/* roulang page: index */
:root{
  --ink-900:#0A0F0E;
  --ink-800:#111917;
  --ink-700:#1B2623;
  --paper:#F4F2EA;
  --paper-2:#EAE7DC;
  --text-1:#14201D;
  --text-2:#5A6662;
  --text-inv:#F2F5EF;
  --text-inv-2:#A9B5AF;
  --brand:#0E5B57;
  --brand-2:#147A73;
  --accent:#E2683C;
  --line-dark:rgba(242,245,239,0.12);
  --line-light:#D9D5C8;
  --ok:#2F7D5B;
  --radius:10px;
  --radius-btn:8px;
  --shadow-card:0 8px 24px rgba(10,15,14,0.06);
  --shadow-lift:0 12px 32px rgba(10,15,14,0.12);
  --sidebar-w:232px;
  --font-sans:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"JetBrains Mono",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  background:var(--paper);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{display:block;max-width:100%;height:auto;border-style:none;}
a{color:var(--brand);text-decoration:none;background-color:transparent;transition:color .2s ease;}
a:hover{color:var(--brand-2);}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,h5,h6{margin:0;color:inherit;font-weight:800;line-height:1.2;letter-spacing:0;font-family:inherit;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
hr{border:0;border-top:1px solid var(--line-light);margin:0;}
::selection{background:rgba(14,91,87,.18);color:var(--text-1);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}

/* ---------- 布局骨架 ---------- */
.page-body{
  margin-left:var(--sidebar-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 48px;
}
.section{padding:96px 0;}
.section--paper2{background:var(--paper-2);}
.section--tight{padding-top:72px;padding-bottom:72px;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:28px;
  margin-bottom:32px;
}
.section-head h2{
  font-size:clamp(1.5rem,2.6vw,2.125rem);
  font-weight:700;
  line-height:1.25;
  letter-spacing:0;
}
.section-head p{
  margin-top:10px;
  color:var(--text-2);
  font-size:.95rem;
  line-height:1.8;
  max-width:46em;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.18em;
  color:var(--brand);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.9rem;
  font-weight:600;
  color:var(--brand);
  position:relative;
  white-space:nowrap;
}
.text-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-4px;
  height:1px;
  background:currentColor;
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .25s ease;
}
.text-link:hover::after{transform:scaleX(1);}
.text-link:hover{color:var(--brand-2);}

/* ---------- 左侧导航 ---------- */
.side-rail{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--sidebar-w);
  background:var(--ink-900);
  border-right:1px solid var(--line-dark);
  padding:28px 20px 22px;
  display:flex;
  flex-direction:column;
  overflow-y:auto;
  z-index:60;
}
.brand{display:block;margin-bottom:30px;color:var(--text-inv);}
.brand:hover{color:var(--text-inv);}
.brand-1{
  display:block;
  font-size:1.26rem;
  font-weight:800;
  line-height:1.25;
  letter-spacing:.03em;
  color:var(--text-inv);
}
.brand-2{
  display:block;
  margin-top:6px;
  font-size:.74rem;
  font-weight:600;
  letter-spacing:.36em;
  color:var(--accent);
}
.rail-nav{display:flex;flex-direction:column;gap:2px;}
.rail-nav a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px;
  border-left:3px solid transparent;
  border-radius:0 var(--radius-btn) var(--radius-btn) 0;
  color:var(--text-inv-2);
  font-size:.9rem;
  line-height:1.5;
  transition:color .2s ease,background .2s ease,transform .2s ease,border-color .2s ease;
}
.rail-nav a:hover{
  color:var(--text-inv);
  background:rgba(242,245,239,.05);
  transform:translateX(2px);
}
.rail-nav a.is-active{
  color:var(--text-inv);
  font-weight:600;
  border-left-color:var(--accent);
  background:rgba(242,245,239,.06);
}
.rail-nav .idx{
  font-family:var(--font-mono);
  font-size:.7rem;
  color:var(--accent);
  opacity:.9;
  flex:0 0 auto;
}
.rail-divider{height:1px;background:var(--line-dark);margin:24px 0 20px;}
.rail-search{position:relative;margin-bottom:18px;}
.rail-search input{
  width:100%;
  height:40px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line-dark);
  background:rgba(242,245,239,.04);
  color:var(--text-inv);
  padding:0 12px 0 34px;
  font-size:.84rem;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.rail-search input::placeholder{color:rgba(169,181,175,.85);}
.rail-search input:focus{
  outline:none;
  border-color:var(--brand-2);
  box-shadow:0 0 0 2px rgba(20,122,115,.3);
}
.rail-search .search-icon{
  position:absolute;
  left:11px;top:12px;
  width:16px;height:16px;
  stroke:var(--text-inv-2);
  fill:none;
  stroke-width:1.8;
  pointer-events:none;
}
.rail-cta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  border-radius:var(--radius-btn);
  background:var(--brand);
  color:#fff;
  font-size:.9rem;
  font-weight:600;
  transition:background .2s ease;
}
.rail-cta:hover{background:var(--brand-2);color:#fff;}
.rail-cta .arrow{transition:transform .2s ease;}
.rail-cta:hover .arrow{transform:translateX(3px);}
.rail-copy{
  margin-top:16px;
  font-size:.72rem;
  line-height:1.7;
  color:rgba(169,181,175,.72);
}

/* ---------- 移动端顶栏与抽屉 ---------- */
.mobile-bar{display:none;}
.drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:var(--ink-900);
  display:flex;
  flex-direction:column;
  padding:22px 22px 28px;
  overflow-y:auto;
  transform:translateX(-100%);
  transition:transform .3s ease;
  visibility:hidden;
}
.drawer.is-open{transform:none;visibility:visible;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:28px;}
.drawer-close{
  width:40px;height:40px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line-dark);
  color:var(--text-inv);
  display:grid;place-items:center;
  font-size:1.1rem;
  line-height:1;
  transition:border-color .2s ease,background .2s ease;
}
.drawer-close:hover{border-color:var(--accent);background:rgba(226,104,60,.12);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:26px;}
.drawer-nav a{
  display:flex;
  align-items:baseline;
  gap:12px;
  padding:14px 0;
  border-bottom:1px solid var(--line-dark);
  color:var(--text-inv);
  font-size:1.12rem;
  font-weight:600;
}
.drawer-nav a .idx{font-family:var(--font-mono);font-size:.72rem;color:var(--accent);font-weight:500;}
.drawer-nav a.is-active{color:var(--accent);}
.drawer-cta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:center;
  height:52px;
  border-radius:var(--radius-btn);
  background:var(--brand);
  color:#fff;
  font-weight:600;
}
.drawer-cta:hover{background:var(--brand-2);color:#fff;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  height:48px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:.95rem;
  font-weight:600;
  border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn .arrow{transition:transform .2s ease;}
.btn:hover .arrow{transform:translateX(3px);}
.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-2);color:#fff;}
.btn-ghost{background:transparent;color:var(--text-1);border-color:var(--line-light);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(14,91,87,.05);}
.btn-invert{background:var(--paper);color:var(--ink-900);}
.btn-invert:hover{background:#fff;color:var(--ink-900);}
.btn-sm{height:40px;padding:0 18px;font-size:.86rem;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:72px 0 0;
  background:
    radial-gradient(circle at 84% 8%, rgba(226,104,60,.08), transparent 46%),
    linear-gradient(180deg,#F7F5EE 0%,var(--paper) 100%);
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:radial-gradient(rgba(20,32,29,.075) 1px, transparent 1px);
  background-size:24px 24px;
  opacity:.55;
  pointer-events:none;
}
.hero .container{position:relative;z-index:1;}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:56px;
  align-items:center;
}
.hero h1{
  font-size:clamp(2rem,4.2vw,3.5rem);
  font-weight:800;
  line-height:1.15;
  color:var(--text-1);
  max-width:16em;
}
.hero h1 .mark{color:var(--brand);}
.hero .lead{
  margin-top:22px;
  font-size:1.03rem;
  color:var(--text-2);
  line-height:1.9;
  max-width:33em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 11px;
  border:1px solid var(--line-light);
  border-radius:var(--radius-btn);
  font-size:.75rem;
  font-weight:500;
  color:var(--text-2);
  background:transparent;
  white-space:nowrap;
}
.badge--dark{border-color:var(--line-dark);color:var(--text-inv-2);}
.hero-frame{
  position:relative;
  width:100%;
  max-width:352px;
  margin-left:auto;
  aspect-ratio:9/16;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--ink-900);
  border:1px solid var(--line-light);
  box-shadow:0 18px 48px rgba(10,15,14,.2);
}
.hero-frame img{width:100%;height:100%;object-fit:cover;object-position:center;}
.hero-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(10,15,14,.5),rgba(10,15,14,.86));
}
.frame-time{
  position:absolute;
  top:14px;left:14px;
  z-index:3;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.06em;
  color:var(--text-inv);
  border:1px solid var(--line-dark);
  border-radius:var(--radius-btn);
  padding:3px 9px;
  background:rgba(10,15,14,.45);
}
.frame-play{
  position:absolute;
  top:50%;left:50%;
  transform:translate(-50%,-50%);
  z-index:3;
  width:64px;height:64px;
  border-radius:50%;
  background:rgba(242,245,239,.14);
  border:1px solid rgba(242,245,239,.5);
  display:grid;place-items:center;
  transition:background .25s ease;
}
.frame-play::after{
  content:"";
  margin-left:4px;
  border-left:14px solid var(--text-inv);
  border-top:9px solid transparent;
  border-bottom:9px solid transparent;
}
.hero-frame:hover .frame-play{background:rgba(226,104,60,.4);}
.frame-caption{
  position:absolute;
  left:16px;right:16px;bottom:16px;
  z-index:3;
  color:var(--text-inv);
}
.frame-caption strong{display:block;font-size:.98rem;font-weight:600;line-height:1.5;}
.frame-caption span{display:block;margin-top:4px;font-size:.76rem;color:var(--text-inv-2);}

/* ---------- 数据条 ---------- */
.stat-bar{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  margin-top:60px;
  border-top:1px solid var(--line-light);
  border-bottom:1px solid var(--line-light);
}
.stat-item{padding:24px 24px 24px 0;border-right:1px solid var(--line-light);}
.stat-item:last-child{border-right:0;}
.stat-num{
  font-family:var(--font-mono);
  font-size:1.72rem;
  font-weight:600;
  color:var(--brand);
  line-height:1.2;
}
.stat-num small{font-size:.82rem;font-weight:500;color:var(--text-2);margin-left:6px;font-family:var(--font-sans);}
.stat-lab{margin-top:6px;font-size:.85rem;color:var(--text-2);}

/* ---------- 片段卡 ---------- */
.clip-row{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
}
.clip-card{
  position:relative;
  display:block;
  aspect-ratio:9/16;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--ink-800);
  border:1px solid var(--line-light);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.clip-card:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:var(--shadow-lift);}
.clip-card img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.clip-card:hover img{transform:scale(1.05);}
.clip-card .overlay{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,15,14,.05) 34%,rgba(10,15,14,.9) 100%);
}
.clip-time{
  position:absolute;
  top:12px;left:12px;
  font-family:var(--font-mono);
  font-size:.7rem;
  color:var(--text-inv);
  padding:2px 8px;
  border-radius:6px;
  background:rgba(10,15,14,.55);
  border:1px solid var(--line-dark);
}
.clip-title{
  position:absolute;
  left:14px;right:14px;bottom:14px;
  color:var(--text-inv);
  font-size:.92rem;
  font-weight:600;
  line-height:1.5;
}

/* ---------- 三步流程 ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  border-top:1px solid var(--line-light);
}
.step{
  padding:32px 32px 8px 0;
  border-right:1px solid var(--line-light);
}
.step:last-child{border-right:0;padding-right:0;}
.step-bar{height:3px;border-radius:2px;background:var(--paper-2);overflow:hidden;margin-bottom:20px;}
.step-bar span{display:block;height:100%;border-radius:2px;background:var(--brand);}
.step-num{
  font-family:var(--font-mono);
  font-size:.76rem;
  color:var(--accent);
  display:flex;
  align-items:center;
  gap:8px;
}
.step-num::after{content:"";width:16px;height:1px;background:var(--accent);opacity:.7;}
.step h3{margin-top:14px;font-size:1.18rem;font-weight:600;line-height:1.5;}
.step p{margin-top:10px;font-size:.92rem;color:var(--text-2);line-height:1.85;}

/* ---------- 文章卡片 ---------- */
.cards-row.grid-x{margin-left:-12px;margin-right:-12px;}
.cards-row.grid-x > .cell{padding-left:12px;padding-right:12px;margin-bottom:24px;}
.post-card{
  display:flex;
  flex-direction:column;
  height:100%;
  background:#fff;
  border:1px solid var(--line-light);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow-card);
  color:inherit;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.post-card:hover{
  transform:translateY(-4px);
  border-color:rgba(14,91,87,.45);
  box-shadow:var(--shadow-lift);
  color:inherit;
}
.post-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--paper-2);}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease;}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-body h3{
  font-size:1.02rem;
  font-weight:600;
  line-height:1.55;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-desc{
  font-size:.86rem;
  color:var(--text-2);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.post-foot{
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--paper-2);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-size:.77rem;
  color:var(--text-2);
}
.post-foot .read{color:var(--brand);font-weight:600;}
.empty-state{
  padding:52px 24px;
  text-align:center;
  border:1px dashed var(--line-light);
  border-radius:var(--radius);
  background:var(--paper-2);
  color:var(--text-2);
  font-size:.92rem;
}

/* ---------- 清单 ---------- */
.list-2col{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:56px;}
.pick-item{
  display:flex;
  align-items:center;
  gap:18px;
  padding:20px 6px;
  border-bottom:1px solid var(--line-light);
  color:inherit;
  transition:background .2s ease,padding .2s ease;
}
.pick-item:hover{background:rgba(14,91,87,.05);color:inherit;padding-left:12px;}
.pick-num{
  font-family:var(--font-mono);
  font-size:.78rem;
  color:var(--accent);
  display:flex;
  align-items:center;
  gap:8px;
  flex:0 0 auto;
}
.pick-num::after{content:"";width:16px;height:1px;background:var(--accent);opacity:.6;}
.pick-text{flex:1;min-width:0;}
.pick-text strong{display:block;font-size:1rem;font-weight:600;line-height:1.6;}
.pick-text span{display:block;font-size:.84rem;color:var(--text-2);line-height:1.7;}
.pick-arrow{color:var(--text-2);transition:transform .2s ease,color .2s ease;flex:0 0 auto;}
.pick-item:hover .pick-arrow{transform:translateX(4px);color:var(--brand);}

/* ---------- 口碑带 ---------- */
.voices{background:var(--ink-900);color:var(--text-inv);padding:80px 0;}
.voices .eyebrow{color:var(--accent);}
.voices .section-head h2{color:var(--text-inv);}
.voices .section-head p{color:var(--text-inv-2);}
.voice-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.voice-card{
  position:relative;
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  border-radius:var(--radius);
  padding:28px 24px 24px;
  transition:border-color .25s ease,transform .25s ease;
}
.voice-card:hover{border-color:rgba(226,104,60,.45);transform:translateY(-4px);}
.voice-card::before{
  content:"“";
  position:absolute;
  top:6px;right:18px;
  font-size:3.4rem;
  line-height:1;
  color:var(--accent);
  opacity:.55;
  font-family:Georgia,serif;
}
.voice-quote{font-size:.92rem;color:var(--text-inv-2);line-height:1.9;position:relative;z-index:1;}
.voice-meta{display:flex;align-items:center;gap:12px;margin-top:20px;}
.avatar{
  width:40px;height:40px;
  flex:0 0 40px;
  border-radius:50%;
  background:var(--brand);
  color:#fff;
  display:grid;place-items:center;
  font-size:.82rem;
  font-weight:600;
}
.voice-meta .who strong{display:block;font-size:.88rem;color:var(--text-inv);font-weight:600;line-height:1.5;}
.voice-meta .who span{display:block;font-size:.75rem;color:var(--text-inv-2);}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;
  background:var(--ink-900) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  color:var(--text-inv);
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(10,15,14,.95) 0%,rgba(10,15,14,.76) 62%,rgba(10,15,14,.55) 100%);
}
.cta-inner{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
  padding:64px 0;
}
.cta-inner h2{font-size:clamp(1.5rem,2.6vw,2rem);font-weight:700;color:var(--text-inv);line-height:1.35;}
.cta-inner p{margin-top:12px;font-size:.94rem;color:var(--text-inv-2);max-width:40em;line-height:1.85;}

/* ---------- FAQ ---------- */
.faq{max-width:900px;}
.faq-item{border-bottom:1px solid var(--line-light);}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:64px;
  padding:16px 0;
  cursor:pointer;
  font-size:1rem;
  font-weight:600;
  line-height:1.6;
  list-style:none;
  color:var(--text-1);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px;}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--brand);
  border-radius:1px;
  transition:transform .25s ease,background .2s ease;
}
.faq-icon::before{top:8px;left:0;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);}
.faq-item[open] summary{color:var(--brand);}
.faq-answer{padding:0 0 26px;max-width:820px;color:var(--text-2);font-size:.94rem;line-height:1.9;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);
  color:var(--text-inv-2);
  border-top:1px solid var(--line-dark);
  padding:64px 0 0;
  margin-top:auto;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:48px;}
.footer-col h4{
  color:var(--text-inv);
  font-size:.9rem;
  font-weight:600;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand .brand-1{font-size:1.12rem;}
.footer-note{font-size:.85rem;line-height:1.85;color:var(--text-inv-2);}
.footer-col a{
  display:block;
  padding:6px 0;
  font-size:.87rem;
  color:var(--text-inv-2);
  transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:var(--text-inv);transform:translateX(2px);}
.footer-col .plain{font-size:.87rem;line-height:1.9;color:var(--text-inv-2);}
.sub-form{display:flex;gap:8px;margin-top:10px;}
.sub-form input{
  flex:1;
  min-width:0;
  height:44px;
  border-radius:var(--radius-btn);
  border:1px solid var(--line-dark);
  background:rgba(242,245,239,.05);
  color:var(--text-inv);
  padding:0 12px;
  font-size:.85rem;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.sub-form input::placeholder{color:rgba(169,181,175,.8);}
.sub-form input:focus{
  outline:none;
  border-color:var(--brand-2);
  box-shadow:0 0 0 2px rgba(20,122,115,.28);
}
.sub-form button{
  height:44px;
  padding:0 16px;
  border-radius:var(--radius-btn);
  background:var(--brand);
  color:#fff;
  font-size:.85rem;
  font-weight:600;
  transition:background .2s ease;
}
.sub-form button:hover{background:var(--brand-2);}
.sub-hint{margin-top:10px;font-size:.76rem;color:rgba(169,181,175,.78);line-height:1.7;}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  margin-top:48px;
  padding:20px 0 22px;
  border-top:1px solid var(--line-dark);
  font-size:.78rem;
  color:rgba(169,181,175,.82);
}
.to-top{color:var(--text-inv-2);font-size:.78rem;transition:color .2s ease;}
.to-top:hover{color:var(--accent);}

/* ---------- 固定转化条 ---------- */
.float-bar{
  position:fixed;
  right:24px;bottom:24px;
  z-index:55;
  display:flex;
  align-items:center;
  gap:18px;
  padding:12px 16px 12px 20px;
  border-radius:var(--radius);
  background:var(--ink-900);
  border:1px solid var(--line-dark);
  box-shadow:0 14px 34px rgba(10,15,14,.3);
  opacity:0;
  visibility:hidden;
  transform:translateY(12px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease;
}
.float-bar.is-show{opacity:1;visibility:visible;transform:none;}
.float-bar .txt{font-size:.84rem;color:var(--text-inv);line-height:1.5;}

/* ---------- 滚动淡入 ---------- */
[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease;}
[data-reveal].in-view{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (min-width:1024px) and (max-width:1279px){
  :root{--sidebar-w:200px;}
  .container{padding:0 32px;}
  .hero-grid{gap:40px;}
  .list-2col{column-gap:36px;}
}
@media (max-width:1023px){
  .side-rail{display:none;}
  .page-body{margin-left:0;padding-top:60px;}
  .mobile-bar{
    display:flex;
    position:fixed;
    top:0;left:0;right:0;
    height:60px;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding:0 20px;
    background:var(--ink-900);
    border-bottom:1px solid var(--line-dark);
    z-index:70;
  }
  .mobile-bar .brand{margin:0;}
  .mobile-bar .brand-1{font-size:1rem;}
  .mobile-bar .brand-2{font-size:.62rem;letter-spacing:.28em;margin-top:3px;}
  .nav-toggle{
    width:42px;height:42px;
    display:grid;place-items:center;
    border-radius:var(--radius-btn);
    border:1px solid var(--line-dark);
    color:var(--text-inv);
  }
  .nav-toggle:hover{border-color:var(--accent);}
  .nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:1px;position:relative;}
  .nav-toggle span::before,.nav-toggle span::after{
    content:"";
    position:absolute;left:0;
    width:18px;height:2px;
    background:currentColor;border-radius:1px;
  }
  .nav-toggle span::before{top:-6px;}
  .nav-toggle span::after{top:6px;}
  .container{padding:0 32px;}
  .section{padding:72px 0;}
  .hero{padding:56px 0 0;}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:40px;}
  .hero-frame{max-width:320px;margin:0 auto;}
  .stat-bar{grid-template-columns:1fr;}
  .stat-item{border-right:0;border-bottom:1px solid var(--line-light);padding:20px 0;}
  .stat-item:last-child{border-bottom:0;}
  .clip-row{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:1fr;}
  .step{border-right:0;border-bottom:1px solid var(--line-light);padding:28px 0;}
  .step:last-child{border-bottom:0;}
  .list-2col{grid-template-columns:1fr;}
  .voice-row{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;padding:52px 0;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .float-bar{
    left:0;right:0;bottom:0;
    border-radius:0;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    border-left:0;border-right:0;border-bottom:0;
    justify-content:space-between;
    gap:12px;
  }
  .float-bar .txt{font-size:.78rem;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section{padding:48px 0;}
  .hero{padding:40px 0 0;}
  .hero h1{font-size:clamp(1.75rem,7vw,2.4rem);}
  .hero .lead{font-size:.97rem;}
  .hero-actions{gap:10px;}
  .btn{height:46px;padding:0 18px;font-size:.9rem;}
  .clip-row{
    display:flex;
    gap:14px;
    overflow-x:auto;
    scroll-snap-type:x mandatory;
    padding-bottom:8px;
    margin-right:-20px;
    padding-right:20px;
  }
  .clip-row::-webkit-scrollbar{height:4px;}
  .clip-row::-webkit-scrollbar-thumb{background:var(--line-light);border-radius:2px;}
  .clip-card{flex:0 0 62%;scroll-snap-align:start;}
  .cards-row.grid-x{margin-left:0;margin-right:0;}
  .cards-row.grid-x > .cell{padding-left:0;padding-right:0;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .voice-card::before{font-size:2.8rem;}
  .cta-inner h2{font-size:1.4rem;}
  .sub-form{flex-wrap:wrap;}
  .sub-form button{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1;transform:none;}
  .clip-card:hover,.post-card:hover,.voice-card:hover,.pick-item:hover{transform:none;}
}

/* roulang page: article */
:root{
  --ink-900:#0A0F0E;
  --ink-800:#111917;
  --ink-700:#1B2623;
  --paper:#F4F2EA;
  --paper-2:#EAE7DC;
  --surface:#FBFAF5;
  --text-1:#14201D;
  --text-2:#5A6662;
  --text-inv:#F2F5EF;
  --text-inv-2:#A9B5AF;
  --brand:#0E5B57;
  --brand-2:#147A73;
  --accent:#E2683C;
  --line-dark:rgba(242,245,239,.12);
  --line-light:#D9D5C8;
  --ok:#2F7D5B;
  --radius:10px;
  --radius-sm:8px;
  --shadow-light:0 8px 24px rgba(10,15,14,.06);
  --shadow-hover:0 14px 32px rgba(10,15,14,.10);
  --rail-w:232px;
  --font-sans:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-2)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-family:var(--font-sans);color:inherit;letter-spacing:0;font-style:normal}
p{margin:0}
ul,ol{margin:0;padding:0}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 48px}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;
}
.show-for-sr{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}

/* ============ 左侧竖向导航 ============ */
.site-rail{
  position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);
  display:flex;flex-direction:column;
  background:var(--ink-900);
  border-right:1px solid var(--line-dark);
  padding:30px 22px 22px;
  overflow-y:auto;z-index:70;
}
.brand{display:inline-flex;flex-direction:column;line-height:1.05}
.brand-1{font-size:21px;font-weight:800;letter-spacing:.06em;color:var(--text-inv)}
.brand-2{font-size:11.5px;font-weight:600;letter-spacing:.42em;color:var(--accent);margin-top:7px}
.rail-nav{display:flex;flex-direction:column;gap:2px;margin-top:28px}
.rail-nav a{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:9px 8px 9px 13px;border-radius:var(--radius-sm);
  font-size:14.5px;color:var(--text-inv-2);
  transition:color .2s,background .2s,transform .2s;
}
.rail-nav a .idx{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  color:rgba(169,181,175,.7);transition:color .2s;
}
.rail-nav a::before{
  content:"";position:absolute;left:0;top:50%;width:3px;height:18px;
  background:var(--accent);border-radius:2px;
  transform:translateY(-50%) scaleY(0);transform-origin:center;
  transition:transform .2s ease;
}
.rail-nav a:hover{color:var(--text-inv);background:rgba(242,245,239,.05);transform:translateX(2px)}
.rail-nav a:hover .idx{color:var(--accent)}
.rail-nav a.is-active{color:var(--text-inv);background:rgba(242,245,239,.07)}
.rail-nav a.is-active::before{transform:translateY(-50%) scaleY(1)}
.rail-nav a.is-active .idx{color:var(--accent)}
.rail-sep{height:1px;background:var(--line-dark);margin:22px 0 18px;border:0}
.rail-search{position:relative}
.rail-search input{
  width:100%;height:40px;padding:0 12px 0 34px;
  background:rgba(242,245,239,.06);
  border:1px solid var(--line-dark);border-radius:var(--radius-sm);
  color:var(--text-inv);font-size:13px;margin:0;
  transition:border-color .2s,box-shadow .2s;
}
.rail-search input::placeholder{color:rgba(169,181,175,.85)}
.rail-search input:focus{
  outline:none;border-color:var(--brand-2);
  box-shadow:0 0 0 2px rgba(20,122,115,.35);
}
.rail-search svg{
  position:absolute;left:11px;top:50%;transform:translateY(-50%);
  width:14px;height:14px;stroke:var(--text-inv-2);fill:none;stroke-width:2;
}
.rail-cta{margin-top:18px;width:100%}
.rail-foot{margin-top:auto;padding-top:24px;font-size:11.5px;line-height:1.7;color:rgba(169,181,175,.7)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:background .2s,color .2s,border-color .2s,box-shadow .2s,transform .2s;
}
.btn .arw{transition:transform .2s ease;display:inline-block}
.btn:hover .arw{transform:translateX(3px)}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-2);color:#fff}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--line-light);color:var(--text-1)}
.btn-ghost:hover{background:rgba(20,32,29,.06);color:var(--text-1)}
.btn-inv{background:var(--paper);color:var(--ink-900)}
.btn-inv:hover{background:#fff;color:var(--ink-900)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--brand);padding-bottom:2px;border-bottom:1px solid transparent;
  transition:border-color .2s,color .2s;
}
.link-more:hover{border-color:var(--brand-2);color:var(--brand-2)}

/* ============ 主体布局 ============ */
.main-wrap{
  margin-left:var(--rail-w);min-height:100vh;
  display:flex;flex-direction:column;
}
.mobile-bar{display:none}
.drawer{display:none}

/* ============ 文章头部 ============ */
.article-hero{
  position:relative;overflow:hidden;
  background:var(--ink-900);color:var(--text-inv);
  padding:60px 0 68px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.20;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,15,14,.62),rgba(10,15,14,.92));
}
.article-hero .container{position:relative;z-index:2}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-inv-2);margin-bottom:24px;
}
.crumb a{color:var(--text-inv-2);transition:color .2s,border-color .2s;border-bottom:1px solid transparent}
.crumb a:hover{color:var(--text-inv);border-bottom-color:var(--accent)}
.crumb .sep{opacity:.45}
.hero-tags{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:20px}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:500;padding:4px 11px;
  border-radius:var(--radius-sm);border:1px solid var(--line-dark);
  color:var(--text-inv-2);
}
.badge-brand{border-color:rgba(20,122,115,.55);color:#7FD3C8;background:rgba(14,91,87,.22)}
.meta{font-size:13px;color:var(--text-inv-2);display:inline-flex;align-items:center;gap:8px}
.meta .dot{width:4px;height:4px;border-radius:50%;background:var(--accent);display:inline-block}
.article-hero h1{
  font-size:clamp(1.75rem,3.2vw,2.75rem);
  font-weight:800;line-height:1.28;max-width:900px;color:var(--text-inv);
}
.hero-note{margin-top:18px;font-size:14px;color:var(--text-inv-2);max-width:760px}

/* ============ 正文区 ============ */
.article-section{padding:64px 0 80px}
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 220px;
  gap:48px;align-items:start;
}
.article-main{min-width:0}
.article-body{
  max-width:820px;font-size:16.5px;line-height:1.9;color:var(--text-1);
  word-wrap:break-word;overflow-wrap:break-word;
}
.article-body>*:first-child{margin-top:0}
.article-body h2{
  position:relative;font-size:clamp(1.35rem,2.2vw,1.75rem);font-weight:700;
  line-height:1.35;margin:2.2em 0 .75em;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;
  border-radius:2px;background:var(--brand);
}
.article-body h3{font-size:1.2rem;font-weight:600;margin:1.8em 0 .6em;color:var(--text-1)}
.article-body p{margin:0 0 1.2em}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.45em}
.article-body li{margin-bottom:.5em}
.article-body strong{font-weight:700}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(14,91,87,.35);transition:color .2s,border-color .2s}
.article-body a:hover{color:var(--brand-2);border-bottom-color:var(--brand-2)}
.article-body blockquote{
  margin:1.6em 0;padding:18px 22px;border-left:3px solid var(--accent);
  background:var(--paper-2);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-1);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{max-width:100%;height:auto;border-radius:var(--radius);margin:1.6em 0 .8em}
.article-body figure{margin:1.6em 0}
.article-body figcaption{font-size:13px;line-height:1.6;color:var(--text-2);text-align:center;margin-top:.2em}
.article-body table{width:100%;border-collapse:collapse;margin:1.6em 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line-light);padding:10px 12px;text-align:left}
.article-body th{background:var(--paper-2);font-weight:600}
.article-body hr{border:0;height:1px;background:var(--line-light);margin:2em 0}

/* ============ 目录 ============ */
.article-aside{position:relative}
.toc-card{
  position:sticky;top:96px;
  background:var(--surface);border:1px solid var(--line-light);
  border-radius:var(--radius);padding:18px 16px 14px;box-shadow:var(--shadow-light);
}
.toc-card h3{font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--text-2);margin-bottom:12px}
.toc-list{list-style:none;display:flex;flex-direction:column;gap:2px;max-height:52vh;overflow:auto}
.toc-list a{
  display:block;font-size:13.5px;line-height:1.6;color:var(--text-2);
  padding:6px 0 6px 12px;border-left:2px solid transparent;
  transition:color .2s,border-color .2s;
}
.toc-list a:hover{color:var(--brand);border-left-color:var(--brand)}
.toc-list .toc-sub a{padding-left:24px;font-size:13px}

/* ============ 文章脚部 ============ */
.article-foot{
  max-width:820px;margin-top:44px;padding-top:24px;
  border-top:1px solid var(--line-light);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.share-row{display:flex;align-items:center;gap:10px}
.share-label{font-size:13px;color:var(--text-2);margin-right:2px}
.share-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:var(--radius-sm);border:1px solid var(--line-light);
  background:var(--surface);color:var(--text-2);cursor:pointer;
  transition:border-color .2s,color .2s,background .2s,transform .2s;
}
.share-btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8}
.share-btn:hover{border-color:var(--brand);color:var(--brand);background:#fff;transform:translateY(-2px)}
.share-tip{font-size:13px;color:var(--ok);min-height:18px}

/* ============ 空态 ============ */
.empty-state{
  max-width:820px;background:var(--surface);
  border:1px dashed var(--line-light);border-radius:var(--radius);
  padding:48px 32px;text-align:center;
}
.empty-state .empty-title{font-size:1.25rem;font-weight:700;margin-bottom:10px}
.empty-state p.desc{font-size:14.5px;color:var(--text-2);margin-bottom:22px}

/* ============ 相关内容 ============ */
.related-section{padding:0 0 88px}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px;margin-bottom:28px;
}
.section-head h2{font-size:clamp(1.4rem,2.4vw,2rem);font-weight:700;line-height:1.3}
.section-head p{font-size:14.5px;color:var(--text-2);margin-top:8px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.post-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line-light);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-light);
  color:var(--text-1);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.post-card:hover{
  transform:translateY(-4px);color:var(--text-1);
  border-color:rgba(226,104,60,.45);box-shadow:var(--shadow-hover);
}
.post-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--ink-700)}
.post-thumb img{width:100%;height:100%;object-fit:cover;object-position:center;transition:transform .4s ease}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-body .badge{
  align-self:flex-start;border-color:var(--line-light);color:var(--text-2);
}
.post-title{font-size:1.0625rem;font-weight:600;line-height:1.5;margin:0}
.post-excerpt{font-size:14px;line-height:1.75;color:var(--text-2);margin:0}
.post-foot{
  margin-top:auto;padding-top:10px;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:var(--text-2);border-top:1px solid var(--line-light);
}
.post-foot .read{color:var(--brand);font-weight:600}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-900);
  color:var(--text-inv);padding:48px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;opacity:.16;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,15,14,.95),rgba(10,15,14,.72));
}
.cta-inner{
  position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;
  justify-content:space-between;gap:24px;
}
.cta-inner h2{font-size:clamp(1.35rem,2.2vw,1.85rem);font-weight:700;line-height:1.35;color:var(--text-inv)}
.cta-inner p{margin-top:8px;font-size:14.5px;color:var(--text-inv-2)}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-900);color:var(--text-inv-2);
  border-top:1px solid var(--line-dark);
  padding:64px 0 96px;font-size:14px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;
  gap:40px;padding-bottom:40px;
}
.footer-col h4{font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--text-inv);margin-bottom:16px}
.footer-col a{display:block;color:var(--text-inv-2);font-size:13.5px;padding:5px 0;transition:color .2s,transform .2s}
.footer-col a:hover{color:var(--text-inv);transform:translateX(2px)}
.footer-brand .brand{margin-bottom:14px}
.footer-note{font-size:13px;line-height:1.7;color:var(--text-inv-2);max-width:240px}
.footer-col .plain{font-size:13px;line-height:1.9;color:var(--text-inv-2);margin:0}
.sub-form{display:flex;gap:8px;margin:0}
.sub-form input{
  flex:1;min-width:0;height:42px;padding:0 12px;margin:0;
  background:rgba(242,245,239,.06);border:1px solid var(--line-dark);
  border-radius:var(--radius-sm);color:var(--text-inv);font-size:13.5px;
  transition:border-color .2s,box-shadow .2s;
}
.sub-form input::placeholder{color:rgba(169,181,175,.8)}
.sub-form input:focus{outline:none;border-color:var(--brand-2);box-shadow:0 0 0 2px rgba(20,122,115,.35)}
.sub-form button{
  height:42px;padding:0 16px;border:0;border-radius:var(--radius-sm);
  background:var(--brand);color:#fff;font-size:13.5px;font-weight:600;cursor:pointer;
  transition:background .2s;
}
.sub-form button:hover{background:var(--brand-2)}
.sub-hint{font-size:12px;line-height:1.7;color:rgba(169,181,175,.8);margin-top:10px}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-top:22px;border-top:1px solid var(--line-dark);
  font-size:12.5px;color:rgba(169,181,175,.85);
}
.to-top{color:var(--text-inv-2);transition:color .2s}
.to-top:hover{color:var(--accent)}

/* ============ 固定转化条 ============ */
.dock-bar{
  position:fixed;left:var(--rail-w);right:0;bottom:0;z-index:65;
  height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 32px;background:rgba(10,15,14,.97);
  border-top:1px solid var(--line-dark);color:var(--text-inv);
  transform:translateY(100%);opacity:0;pointer-events:none;
  transition:transform .3s ease,opacity .3s ease;
}
.dock-bar.is-show{transform:translateY(0);opacity:1;pointer-events:auto}
.dock-bar span{font-size:14px;color:var(--text-inv)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-in{opacity:1;transform:none}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  :root{--rail-w:200px}
  .container{padding:0 32px}
  .article-layout{grid-template-columns:minmax(0,1fr) 200px;gap:32px}
}
@media (max-width:1023px){
  .site-rail{display:none}
  .main-wrap{margin-left:0}
  .mobile-bar{
    display:flex;position:fixed;top:0;left:0;right:0;height:60px;z-index:80;
    align-items:center;justify-content:space-between;padding:0 20px;
    background:rgba(10,15,14,.97);border-bottom:1px solid var(--line-dark);
  }
  .mobile-bar .brand-1{font-size:16px}
  .mobile-bar .brand-2{font-size:9.5px;letter-spacing:.3em;margin-top:4px}
  .burger{
    width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;
    background:transparent;border:1px solid var(--line-dark);border-radius:var(--radius-sm);
    cursor:pointer;color:var(--text-inv);
  }
  .burger svg{width:18px;height:18px;stroke:currentColor;stroke-width:2;fill:none}
  .drawer{
    position:fixed;inset:0;z-index:90;display:flex;flex-direction:column;
    background:var(--ink-900);padding:22px 22px 24px;
    transform:translateX(100%);transition:transform .3s ease;
    overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
  .drawer-close{
    width:40px;height:40px;border:1px solid var(--line-dark);border-radius:var(--radius-sm);
    background:transparent;color:var(--text-inv);font-size:18px;cursor:pointer;line-height:1;
  }
  .drawer-nav{display:flex;flex-direction:column;gap:4px}
  .drawer-nav a{
    display:flex;align-items:center;gap:14px;padding:14px 6px;
    color:var(--text-inv-2);font-size:18px;font-weight:600;
    border-bottom:1px solid var(--line-dark);transition:color .2s,padding-left .2s;
  }
  .drawer-nav a .idx{font-family:var(--font-mono);font-size:12px;color:var(--accent)}
  .drawer-nav a:hover,.drawer-nav a.is-active{color:var(--text-inv);padding-left:12px}
  .drawer-cta{width:100%;margin-top:auto}
  .drawer-foot{font-size:12px;color:rgba(169,181,175,.75);margin-top:18px;line-height:1.7}
  .main-wrap{padding-top:60px}
  .article-hero{padding:44px 0 52px}
  .article-section{padding:44px 0 56px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:28px}
  .article-aside{order:-1}
  .toc-card{position:static}
  .toc-list{max-height:196px}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .dock-bar{left:0;height:56px;padding:0 16px}
  .dock-bar span{font-size:13px}
  .dock-bar .btn{height:40px;padding:0 16px;font-size:14px}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .article-hero h1{font-size:1.6rem;line-height:1.35}
  .related-grid{grid-template-columns:minmax(0,1fr)}
  .article-foot{flex-direction:column;align-items:flex-start}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr}
  .dock-bar span{max-width:56%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .article-body{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  .post-card:hover,.share-btn:hover{transform:none}
}

/* roulang page: category1 */
/* ===================== 设计变量 ===================== */
:root{
  --ink-900:#0A0F0E;
  --ink-800:#111917;
  --ink-700:#1B2623;
  --paper:#F4F2EA;
  --paper-2:#EAE7DC;
  --text-1:#14201D;
  --text-2:#5A6662;
  --text-inv:#F2F5EF;
  --text-inv-2:#A9B5AF;
  --brand:#0E5B57;
  --brand-2:#147A73;
  --accent:#E2683C;
  --line-dark:rgba(242,245,239,0.12);
  --line-light:#D9D5C8;
  --ok:#2F7D5B;
  --r-card:10px;
  --r-btn:8px;
  --shadow-card:0 8px 24px rgba(10,15,14,.06);
  --rail-w:232px;
  --pad-x:48px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --mono:ui-monospace,"SFMono-Regular","JetBrains Mono",Menlo,Consolas,monospace;
}
@media (min-width:1024px) and (max-width:1279px){ :root{ --rail-w:200px; } }
@media (max-width:1023px){ :root{ --pad-x:32px; } }
@media (max-width:767px){ :root{ --pad-x:20px; } }

/* ===================== 基础 reset ===================== */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--paper);
  color:var(--text-1);
  font-family:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
body.nav-lock{ overflow:hidden; }
h1,h2,h3,h4{ margin:0; color:var(--text-1); letter-spacing:0; }
p{ margin:0 0 1.1em; }
img{ max-width:100%; height:auto; display:block; border:0; }
a{ color:var(--brand); text-decoration:none; transition:color .2s var(--ease); }
a:hover{ color:var(--brand-2); }
ul,ol{ margin:0; padding:0; list-style:none; }
button{ font:inherit; }
input,select,textarea{ font:inherit; color:inherit; }
:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; border-radius:4px; }
::selection{ background:rgba(14,91,87,.18); }

.skip{
  position:absolute; left:-9999px; top:0; z-index:200;
  background:var(--ink-900); color:var(--text-inv);
  padding:12px 18px; border-radius:0 0 8px 0; font-size:14px;
}
.skip:focus{ left:0; color:var(--text-inv); }

/* ===================== 左侧固定导航 ===================== */
.rail{
  position:fixed; top:0; left:0; bottom:0;
  width:var(--rail-w);
  background:var(--ink-900);
  border-right:1px solid var(--line-dark);
  padding:30px 22px 24px;
  display:flex; flex-direction:column; gap:18px;
  overflow-y:auto;
  z-index:60;
  transition:transform .26s var(--ease);
  -webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{ width:5px; }
.rail::-webkit-scrollbar-thumb{ background:rgba(242,245,239,.16); border-radius:4px; }

.brand{
  display:block; text-decoration:none; line-height:1.05; letter-spacing:.02em;
  transition:opacity .2s var(--ease);
}
.brand:hover{ opacity:.86; }
.brand-1{ display:block; font-size:21px; font-weight:800; color:var(--text-inv); }
.brand-2{ display:block; font-size:12.5px; font-weight:500; color:var(--accent); letter-spacing:.3em; margin-top:7px; }

.rail-nav{ display:flex; flex-direction:column; gap:2px; }
.rail-nav a{
  position:relative;
  display:flex; align-items:center; gap:10px;
  padding:9px 8px 9px 14px;
  border-radius:6px;
  color:var(--text-inv-2);
  font-size:14.5px; line-height:1.5;
  transition:color .2s var(--ease), background .2s var(--ease), transform .2s var(--ease);
}
.rail-nav a .idx{
  font-family:var(--mono); font-size:11.5px; letter-spacing:.04em;
  color:var(--accent); opacity:.78; flex:0 0 auto;
}
.rail-nav a::before{
  content:""; position:absolute; left:0; top:50%;
  width:3px; height:0; background:var(--accent);
  border-radius:2px; transform:translateY(-50%);
  transition:height .2s var(--ease);
}
.rail-nav a:hover{ color:var(--text-inv); background:rgba(242,245,239,.05); transform:translateX(2px); }
.rail-nav a.is-active{ color:var(--text-inv); background:rgba(242,245,239,.08); }
.rail-nav a.is-active::before{ height:18px; }
.rail-nav a.is-active .idx{ opacity:1; }

.rail-divider{ height:1px; background:var(--line-dark); margin:2px 0; }

.rail-search{ position:relative; }
.rail-search input{
  width:100%; height:40px;
  border-radius:var(--r-btn);
  border:1px solid var(--line-dark);
  background:rgba(242,245,239,.04);
  color:var(--text-inv);
  padding:0 12px 0 36px;
  font-size:13.5px;
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
}
.rail-search input::placeholder{ color:rgba(169,181,175,.85); }
.rail-search input:hover{ background:rgba(242,245,239,.07); }
.rail-search input:focus{
  outline:none; border-color:var(--brand-2); background:rgba(242,245,239,.07);
  box-shadow:0 0 0 3px rgba(20,122,115,.3);
}
.rail-search .s-ico{
  position:absolute; left:12px; top:50%; transform:translateY(-50%);
  width:15px; height:15px; color:var(--text-inv-2); pointer-events:none;
}

.rail-cta{
  display:flex; align-items:center; justify-content:center; gap:8px;
  height:44px; border-radius:var(--r-btn);
  background:var(--brand); color:#fff;
  font-size:14px; font-weight:600;
  transition:background .2s var(--ease), transform .2s var(--ease);
}
.rail-cta:hover{ background:var(--brand-2); color:#fff; }
.rail-cta:active{ transform:translateY(1px); }

.rail-foot{
  margin:auto 0 0; font-size:11.5px; line-height:1.7;
  color:rgba(169,181,175,.68); letter-spacing:.02em;
}

/* ===================== 移动端顶栏 / 抽屉 ===================== */
.mbar{
  display:none;
  position:fixed; top:0; left:0; right:0; height:60px;
  align-items:center; justify-content:space-between;
  padding:0 18px;
  background:var(--ink-900);
  border-bottom:1px solid var(--line-dark);
  z-index:70;
}
.brand--sm{ display:flex; align-items:baseline; gap:8px; }
.brand--sm .brand-1{ font-size:17px; }
.brand--sm .brand-2{ margin-top:0; font-size:10.5px; letter-spacing:.18em; }

.burger{
  width:42px; height:40px; padding:0 9px;
  display:flex; flex-direction:column; justify-content:center; gap:5px;
  background:transparent; border:1px solid var(--line-dark);
  border-radius:8px; cursor:pointer;
  transition:border-color .2s var(--ease), background .2s var(--ease);
}
.burger:hover{ background:rgba(242,245,239,.06); border-color:rgba(242,245,239,.28); }
.burger span{ display:block; height:2px; background:var(--text-inv); border-radius:2px; }
.burger[aria-expanded="true"] span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.burger[aria-expanded="true"] span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }
.burger span{ transition:transform .22s var(--ease), opacity .22s var(--ease); }

.scrim{
  position:fixed; inset:0; z-index:55;
  background:rgba(10,15,14,.6);
  opacity:0; transition:opacity .24s var(--ease);
}
.scrim.is-on{ opacity:1; }
.scrim[hidden]{ display:none; }

/* ===================== 内容壳与容器 ===================== */
.shell{
  margin-left:var(--rail-w);
  min-height:100vh;
  display:flex; flex-direction:column;
}
.container{
  width:100%; max-width:1240px;
  margin:0 auto;
  padding:0 var(--pad-x);
}
main{ flex:1 0 auto; }

@media (max-width:1023px){
  .rail{
    width:min(86vw,330px);
    transform:translateX(-100%);
    padding-top:26px;
    box-shadow:0 0 60px rgba(0,0,0,.55);
  }
  .rail.is-open{ transform:none; }
  .mbar{ display:flex; }
  .shell{ margin-left:0; padding-top:60px; }
}

/* ===================== 通用板块与排版 ===================== */
.section{ padding:72px 0; }
.section--intro{ padding-top:44px; }
@media (max-width:1023px){
  .section{ padding:56px 0; }
  .section--intro{ padding-top:36px; }
}
@media (max-width:767px){
  .section{ padding:42px 0; }
  .section--intro{ padding-top:28px; }
}

.page-head h1{
  font-size:clamp(2rem,4.2vw,3.5rem);
  font-weight:800; line-height:1.15;
  max-width:19em;
}
.eyebrow{
  font-family:var(--mono);
  font-size:12.5px; letter-spacing:.16em;
  color:var(--brand);
  margin:0 0 16px;
  display:flex; align-items:center; gap:10px;
}
.eyebrow::before{
  content:""; width:16px; height:1px; background:var(--accent);
}
.lede{
  margin:22px 0 0;
  font-size:17px; line-height:1.85;
  color:var(--text-2);
  max-width:44em;
}
.lede strong{ color:var(--text-1); font-weight:600; }

.actions{ display:flex; flex-wrap:wrap; gap:14px; margin-top:32px; }

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:48px; padding:0 24px;
  border-radius:var(--r-btn); border:1px solid transparent;
  font-size:15px; font-weight:600;
  cursor:pointer;
  transition:background .2s var(--ease), color .2s var(--ease),
             border-color .2s var(--ease), transform .2s var(--ease),
             box-shadow .2s var(--ease);
}
.btn .arw{ transition:transform .2s var(--ease); }
.btn:hover .arw{ transform:translateX(3px); }
.btn-primary{ background:var(--brand); color:#fff; }
.btn-primary:hover{ background:var(--brand-2); color:#fff; box-shadow:0 8px 20px rgba(14,91,87,.22); }
.btn-primary:active{ transform:translateY(1px); box-shadow:none; }
.btn-ghost{ background:transparent; color:var(--text-1); border-color:var(--line-light); }
.btn-ghost:hover{ background:rgba(20,32,29,.055); border-color:var(--text-1); color:var(--text-1); }
.btn-ghost:active{ transform:translateY(1px); }
.btn-inv{ background:var(--paper); color:var(--ink-900); }
.btn-inv:hover{ background:#fff; color:var(--ink-900); }
.btn-inv:active{ transform:translateY(1px); }

.link-arrow{
  position:relative;
  display:inline-flex; align-items:center; gap:6px;
  font-size:14.5px; font-weight:600; color:var(--brand);
  padding-bottom:2px;
}
.link-arrow::after{
  content:""; position:absolute; left:0; bottom:0;
  width:0; height:1px; background:currentColor;
  transition:width .22s var(--ease);
}
.link-arrow:hover::after{ width:100%; }

.section-head{
  display:flex; align-items:flex-end; justify-content:space-between;
  gap:24px; flex-wrap:wrap;
  margin-bottom:30px;
}
.section-head h2{
  font-size:clamp(1.5rem,2.6vw,2.125rem);
  font-weight:700; line-height:1.25;
}
.section-sub{
  margin:10px 0 0; font-size:15px; color:var(--text-2); max-width:44em;
}

/* ===================== 横幅 ===================== */
.banner{
  position:relative; overflow:hidden;
  border-radius:var(--r-card);
  background:var(--ink-900);
  aspect-ratio:21/9;
  margin-top:30px;
  box-shadow:0 12px 34px rgba(10,15,14,.14);
}
.banner img{
  position:absolute; inset:0;
  width:100%; height:100%;
  object-fit:cover; object-position:center;
}
.banner::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(180deg,rgba(10,15,14,.3) 0%,rgba(10,15,14,.82) 100%);
}
.banner-tag{
  position:absolute; top:20px; left:24px; z-index:2;
  font-size:12px; letter-spacing:.14em;
  color:var(--text-inv);
  border:1px solid var(--line-dark);
  background:rgba(10,15,14,.4);
  padding:6px 12px; border-radius:6px;
}
.banner-cap{
  position:absolute; left:24px; bottom:22px; right:24px; z-index:2;
  display:flex; align-items:center; gap:10px;
  font-size:13.5px; color:var(--text-inv-2);
}
.banner-cap .dot{
  width:7px; height:7px; border-radius:50%;
  background:var(--accent); flex:0 0 auto;
  box-shadow:0 0 0 4px rgba(226,104,60,.18);
  animation:glowPulse 4.8s ease-in-out infinite;
}
@keyframes glowPulse{
  0%,100%{ box-shadow:0 0 0 4px rgba(226,104,60,.16); opacity:.9; }
  50%{ box-shadow:0 0 0 8px rgba(226,104,60,.05); opacity:1; }
}
@media (max-width:767px){
  .banner{ aspect-ratio:16/10; margin-top:20px; }
  .banner-tag{ top:14px; left:14px; font-size:11px; }
  .banner-cap{ left:14px; right:14px; bottom:14px; font-size:12.5px; }
}

/* ===================== 编号索引列表 ===================== */
.index-list{
  display:grid; grid-template-columns:1fr 1fr;
  column-gap:52px;
  border-top:1px solid var(--line-light);
}
.idx-item{
  display:flex; align-items:center; gap:16px;
  padding:18px 6px;
  border-bottom:1px solid var(--line-light);
  color:var(--text-1);
  transition:background .22s var(--ease), padding-left .22s var(--ease);
}
.idx-item:hover{ background:rgba(14,91,87,.05); padding-left:14px; color:var(--text-1); }
.idx-num{
  font-family:var(--mono); font-size:12.5px; letter-spacing:.04em;
  color:var(--accent); flex:0 0 auto;
}
.idx-body{ flex:1 1 auto; min-width:0; display:flex; flex-direction:column; gap:2px; }
.idx-title{ font-size:16.5px; font-weight:600; line-height:1.5; }
.idx-desc{ font-size:13px; color:var(--text-2); line-height:1.6; }
.tag{
  flex:0 0 auto;
  font-size:12px; font-weight:500;
  color:var(--text-2);
  border:1px solid var(--line-light);
  border-radius:6px;
  padding:3px 9px;
  transition:border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}
.idx-item:hover .tag{ border-color:var(--brand); color:var(--brand); background:rgba(14,91,87,.06); }
.idx-arw{
  flex:0 0 auto; color:var(--text-2); font-size:15px;
  transition:transform .22s var(--ease), color .22s var(--ease);
}
.idx-item:hover .idx-arw{ transform:translateX(3px); color:var(--accent); }

@media (max-width:900px){
  .index-list{ grid-template-columns:1fr; column-gap:0; }
}
@media (max-width:520px){
  .idx-item{ gap:12px; padding:15px 2px; flex-wrap:wrap; }
  .idx-title{ font-size:15.5px; }
  .idx-desc{ font-size:12.5px; }
}

/* ===================== 三步流程（纯排版） ===================== */
.steps{
  display:grid; grid-template-columns:repeat(3,1fr);
  margin-top:38px;
}
.step{ position:relative; padding:0 34px; }
.step:first-child{ padding-left:0; }
.step:last-child{ padding-right:0; }
.step + .step::before{
  content:""; position:absolute; left:0; top:6px; bottom:6px;
  width:1px; background:var(--line-light);
}
.s-num{
  display:block; font-family:var(--mono);
  font-size:12.5px; letter-spacing:.12em;
  color:var(--accent); margin-bottom:12px;
}
.step h3{ font-size:1.18rem; font-weight:600; margin-bottom:8px; line-height:1.4; }
.step p{ font-size:14.5px; color:var(--text-2); line-height:1.85; margin:0; }

@media (max-width:900px){
  .steps{ grid-template-columns:1fr; margin-top:28px; }
  .step{ padding:0 0 26px 0; }
  .step + .step{ border-top:1px solid var(--line-light); padding-top:26px; }
  .step + .step::before{ display:none; }
  .step:last-child{ padding-bottom:0; }
}

/* ===================== 场景列表 ===================== */
.scene-grid{
  display:grid; grid-template-columns:1fr 1fr;
  column-gap:52px;
}
.scene{ padding:22px 0; border-top:1px solid var(--line-light); }
.scene h3{
  font-size:1.05rem; font-weight:600; margin-bottom:6px;
  display:flex; align-items:center; gap:8px;
}
.scene h3::before{
  content:""; width:5px; height:5px; border-radius:1px;
  background:var(--accent); flex:0 0 auto;
}
.scene p{ font-size:14.5px; color:var(--text-2); margin:0; line-height:1.85; }
@media (max-width:900px){
  .scene-grid{ grid-template-columns:1fr; column-gap:0; }
}

/* ===================== FAQ ===================== */
.faq{ max-width:900px; margin-top:26px; }
.faq details{ border-bottom:1px solid var(--line-light); }
.faq details:first-of-type{ border-top:1px solid var(--line-light); }
.faq summary{
  display:flex; align-items:center; justify-content:space-between; gap:18px;
  min-height:64px; padding:18px 0;
  font-size:16.5px; font-weight:600; color:var(--text-1);
  cursor:pointer; list-style:none;
  transition:color .2s var(--ease);
}
.faq summary::-webkit-details-marker{ display:none; }
.faq summary::marker{ content:""; }
.faq summary:hover{ color:var(--brand); }
.faq summary .plus{
  position:relative; flex:0 0 auto; width:18px; height:18px;
}
.faq summary .plus::before,
.faq summary .plus::after{
  content:""; position:absolute; background:var(--brand); border-radius:2px;
  transition:transform .22s var(--ease), opacity .22s var(--ease);
}
.faq summary .plus::before{ left:0; top:8px; width:18px; height:2px; }
.faq summary .plus::after{ left:8px; top:0; width:2px; height:18px; }
.faq details[open] summary .plus::after{ transform:rotate(90deg); opacity:0; }
.faq .ans{
  padding:0 0 24px;
  max-width:820px;
  font-size:15.5px; line-height:1.9; color:var(--text-2);
}
.faq .ans p:last-child{ margin-bottom:0; }

/* ===================== CTA 带 ===================== */
.cta-band{
  position:relative; overflow:hidden;
  background:var(--ink-900);
  border-radius:var(--r-card);
  padding:56px 48px;
  display:flex; align-items:center; justify-content:space-between;
  gap:36px;
  color:var(--text-inv);
  box-shadow:0 16px 40px rgba(10,15,14,.18);
}
.cta-band::before{
  content:""; position:absolute; inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.16; pointer-events:none;
}
.cta-band::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(90deg,rgba(10,15,14,.92) 0%,rgba(10,15,14,.55) 100%);
  pointer-events:none;
}
.cta-band .inner{ position:relative; z-index:2; max-width:34em; }
.cta-band h2{
  color:var(--text-inv);
  font-size:clamp(1.45rem,2.4vw,1.95rem);
  line-height:1.3; margin-bottom:10px;
}
.cta-band p{ color:var(--text-inv-2); margin:0; font-size:15px; line-height:1.8; }
.cta-band .btn{ position:relative; z-index:2; flex:0 0 auto; }
@media (max-width:900px){
  .cta-band{ flex-direction:column; align-items:flex-start; padding:40px 28px; gap:24px; }
}

/* ===================== 页脚 ===================== */
.site-footer{
  background:var(--ink-900);
  color:var(--text-inv-2);
  border-top:1px solid var(--line-dark);
  margin-top:80px;
  flex:0 0 auto;
}
.site-footer .container{ padding-top:64px; padding-bottom:26px; }
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:44px;
}
.footer-col h4{
  color:var(--text-inv); font-size:14px; font-weight:600;
  letter-spacing:.06em; margin-bottom:16px;
}
.footer-brand .brand{ margin-bottom:16px; }
.footer-note{ font-size:13.5px; color:var(--text-inv-2); margin:0; line-height:1.75; }
.footer-col > a{
  display:block;
  color:var(--text-inv-2);
  font-size:14px;
  padding:5px 0;
  transition:color .2s var(--ease), transform .2s var(--ease);
}
.footer-col > a:hover{ color:var(--text-inv); transform:translateX(2px); }
.plain{ font-size:13.5px; color:var(--text-inv-2); margin:0 0 8px; line-height:1.75; }
.sub-form{ display:flex; gap:8px; margin-bottom:10px; }
.sub-form input{
  flex:1 1 auto; min-width:0; height:44px;
  border-radius:var(--r-btn);
  border:1px solid var(--line-dark);
  background:rgba(242,245,239,.05);
  color:var(--text-inv);
  padding:0 12px; font-size:14px;
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease);
}
.sub-form input::placeholder{ color:rgba(169,181,175,.8); }
.sub-form input:focus{
  outline:none; border-color:var(--brand-2); background:rgba(242,245,239,.08);
  box-shadow:0 0 0 3px rgba(20,122,115,.3);
}
.sub-form button{
  flex:0 0 auto; height:44px; padding:0 18px;
  border:0; border-radius:var(--r-btn);
  background:var(--brand); color:#fff;
  font-size:14px; font-weight:600; cursor:pointer;
  transition:background .2s var(--ease), transform .2s var(--ease);
}
.sub-form button:hover{ background:var(--brand-2); }
.sub-form button:active{ transform:translateY(1px); }
.sub-hint{ font-size:12.5px; color:rgba(169,181,175,.8); margin:0; line-height:1.75; }
.footer-bottom{
  display:flex; align-items:center; justify-content:space-between;
  gap:16px; flex-wrap:wrap;
  margin-top:46px; padding-top:22px;
  border-top:1px solid var(--line-dark);
  font-size:13px; color:rgba(169,181,175,.75);
}
.to-top{ color:var(--text-inv-2); font-size:13px; }
.to-top:hover{ color:var(--accent); }

@media (max-width:1023px){
  .footer-grid{ grid-template-columns:1fr 1fr; gap:34px; }
  .site-footer{ margin-top:56px; }
  .site-footer .container{ padding-top:48px; }
}
@media (max-width:600px){
  .footer-grid{ grid-template-columns:1fr; gap:28px; }
  .footer-bottom{ font-size:12px; }
}

/* ===================== 滚动进入 ===================== */
.reveal{
  opacity:0; transform:translateY(12px);
  transition:opacity .6s var(--ease), transform .6s var(--ease);
}
.reveal.in{ opacity:1; transform:none; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{ opacity:1; transform:none; }
}

/* roulang page: category3 */
:root{
  --ink-900:#0A0F0E;
  --ink-800:#111917;
  --ink-700:#1B2623;
  --paper:#F4F2EA;
  --paper-2:#EAE7DC;
  --text-1:#14201D;
  --text-2:#5A6662;
  --text-inv:#F2F5EF;
  --text-inv-2:#A9B5AF;
  --brand:#0E5B57;
  --brand-2:#147A73;
  --accent:#E2683C;
  --line-dark:rgba(242,245,239,0.12);
  --line-light:#D9D5C8;
  --ok:#2F7D5B;
  --rail-w:232px;
  --radius-card:10px;
  --radius-btn:8px;
  --shadow-card:0 8px 24px rgba(10,15,14,0.06);
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text-1);
  font-family:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-card);}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-2);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p,figure{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}
.sr-only,.show-for-sr{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 48px;}

/* ---------- 左侧竖向导航 ---------- */
.rail{
  position:fixed;left:0;top:0;bottom:0;width:var(--rail-w);
  background:var(--ink-900);
  border-right:1px solid var(--line-dark);
  z-index:80;
  overflow-y:auto;
  scrollbar-width:thin;
}
.rail-inner{display:flex;flex-direction:column;min-height:100%;padding:30px 20px 24px;}
.brand{display:block;text-decoration:none;line-height:1.15;}
.brand-1{display:block;color:var(--text-inv);font-size:25px;font-weight:800;letter-spacing:.02em;}
.brand-2{display:block;color:var(--text-inv-2);font-size:13px;font-weight:500;letter-spacing:.42em;margin-top:6px;}
.brand:hover .brand-2{color:var(--accent);}
.rail-nav{margin-top:34px;display:flex;flex-direction:column;gap:2px;}
.rail-nav a{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px 9px 12px;
  color:var(--text-inv-2);font-size:14.5px;line-height:1.5;
  border-left:3px solid transparent;
  border-radius:0 6px 6px 0;
  transition:color .2s ease,transform .2s ease,border-color .2s ease,background-color .2s ease;
}
.rail-nav a .idx{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:rgba(169,181,175,.62);
}
.rail-nav a:hover{color:var(--text-inv);transform:translateX(2px);background:rgba(242,245,239,.04);}
.rail-nav a.is-active{
  color:var(--text-inv);border-left-color:var(--accent);background:rgba(242,245,239,.06);font-weight:600;
}
.rail-nav a.is-active .idx{color:var(--accent);}
.rail-divider{height:1px;background:var(--line-dark);margin:26px 0 20px;}
.rail-search{position:relative;}
.rail-search i{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--text-inv-2);pointer-events:none;
}
.rail-search input{
  width:100%;height:40px;padding:0 12px 0 34px;
  background:var(--ink-800);border:1px solid var(--line-dark);border-radius:var(--radius-btn);
  color:var(--text-inv);font-size:13.5px;
}
.rail-search input::placeholder{color:rgba(169,181,175,.66);}
.rail-search input:focus{
  border-color:var(--brand-2);outline:none;box-shadow:0 0 0 2px rgba(20,122,115,.32);
}
.rail-cta{margin-top:18px;width:100%;justify-content:center;}
.rail-copy{
  margin-top:auto;padding-top:26px;font-size:11.5px;line-height:1.6;
  color:rgba(169,181,175,.66);letter-spacing:.02em;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border:1px solid transparent;border-radius:var(--radius-btn);
  background:var(--brand);color:#fff;font-size:15px;font-weight:600;letter-spacing:.01em;
  cursor:pointer;transition:background-color .22s ease,transform .22s ease,color .22s ease,border-color .22s ease;
}
.btn:hover{background:var(--brand-2);color:#fff;}
.btn .arw{transition:transform .22s ease;font-size:15px;}
.btn:hover .arw{transform:translateX(3px);}
.btn:active{transform:translateY(1px);}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.btn-ghost{background:transparent;border-color:var(--line-dark);color:var(--text-inv);}
.btn-ghost:hover{background:rgba(242,245,239,.09);color:var(--text-inv);border-color:rgba(242,245,239,.28);}
.btn-light{background:var(--paper);color:var(--ink-900);}
.btn-light:hover{background:#fff;color:var(--ink-900);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

/* ---------- 移动顶栏 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:90;
  background:var(--ink-900);border-bottom:1px solid var(--line-dark);
  align-items:center;justify-content:space-between;padding:0 20px;
}
.topbar .brand-1{font-size:19px;}
.topbar .brand-2{font-size:10px;letter-spacing:.3em;margin-top:3px;}
.nav-toggle{
  display:flex;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 10px;background:transparent;
  border:1px solid var(--line-dark);border-radius:8px;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;background:var(--text-inv);border-radius:2px;transition:transform .2s ease,opacity .2s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:100;background:var(--ink-900);
  display:flex;flex-direction:column;padding:20px 22px 28px;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity .26s ease,transform .26s ease,visibility .26s;
}
.drawer.is-open{opacity:1;visibility:visible;transform:none;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:42px;height:42px;border:1px solid var(--line-dark);border-radius:8px;
  background:transparent;color:var(--text-inv);font-size:17px;cursor:pointer;
}
.drawer-close:hover{background:rgba(242,245,239,.08);}
.drawer-nav{margin-top:34px;display:flex;flex-direction:column;}
.drawer-nav a{
  display:flex;align-items:center;gap:14px;padding:16px 4px;
  color:var(--text-inv);font-size:19px;font-weight:600;
  border-bottom:1px solid var(--line-dark);
}
.drawer-nav a .idx{font-family:var(--font-mono);font-size:12px;color:var(--accent);letter-spacing:.1em;}
.drawer-nav a:hover{color:var(--accent);}
.drawer-cta{margin-top:auto;width:100%;}

/* ---------- 页面主体 ---------- */
.page{margin-left:var(--rail-w);}
.sec{padding:96px 0;}
.sec-alt{background:var(--paper-2);}
.sec-dark{background:var(--ink-900);color:var(--text-inv);}
.sec-head{max-width:820px;margin-bottom:32px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12.5px;font-weight:500;letter-spacing:.18em;
  color:var(--accent);text-transform:uppercase;
}
.eyebrow::after{content:"";display:block;width:26px;height:1px;background:var(--accent);}
h2{font-size:clamp(1.5rem,2.6vw,2.125rem);font-weight:700;line-height:1.25;margin-top:14px;letter-spacing:0;}
.sec-head p{margin-top:14px;color:var(--text-2);max-width:760px;}
h3{font-size:1.28rem;font-weight:600;line-height:1.4;}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:var(--text-inv);
  background:
    linear-gradient(180deg,rgba(10,15,14,0.62),rgba(10,15,14,0.92)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(242,245,239,.22) 1px,transparent 1px);
  background-size:46px 46px;opacity:.35;
  animation:twinkle 8s ease-in-out infinite alternate;
}
@keyframes twinkle{from{opacity:.18;}to{opacity:.42;}}
.hero-inner{position:relative;z-index:2;padding-top:96px;padding-bottom:72px;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-inv-2);}
.crumbs a{color:var(--text-inv-2);}
.crumbs a:hover{color:var(--text-inv);}
.crumbs .sep{color:rgba(169,181,175,.5);}
.hero h1{
  margin-top:22px;max-width:19em;
  font-size:clamp(2rem,4.2vw,3.5rem);font-weight:800;line-height:1.15;
  color:var(--text-inv);
}
.hero-sub{margin-top:18px;max-width:660px;color:var(--text-inv-2);font-size:17px;line-height:1.8;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
.stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;
  margin-top:56px;padding-top:26px;border-top:1px solid var(--line-dark);
}
.stat-num{font-family:var(--font-mono);font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:500;color:var(--text-inv);line-height:1.2;}
.stat-num .unit{font-size:.55em;margin-left:4px;color:var(--text-inv-2);font-family:inherit;}
.stat-label{margin-top:6px;font-size:13px;color:var(--text-inv-2);letter-spacing:.04em;}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:12px;}
.timeline::before{
  content:"";position:absolute;left:23px;top:10px;bottom:10px;width:1px;background:var(--line-light);
}
.tl-item{position:relative;padding-left:72px;padding-bottom:38px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute;left:15px;top:5px;width:17px;height:17px;border-radius:50%;
  background:var(--paper);border:1px solid var(--brand);
}
.tl-dot::after{content:"";position:absolute;inset:4px;border-radius:50%;background:var(--accent);}
.tl-step{
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.16em;color:var(--accent);font-weight:500;
}
.tl-item h3{margin-top:6px;color:var(--text-1);}
.tl-item p{margin-top:8px;color:var(--text-2);max-width:760px;}
.tl-tag{
  display:inline-block;margin-top:12px;padding:3px 10px;font-size:12.5px;
  color:var(--text-2);border:1px solid var(--line-light);border-radius:8px;background:transparent;
}

/* ---------- 准备清单 ---------- */
.prep-grid{display:flex;flex-wrap:wrap;margin-left:-14px;margin-right:-14px;align-items:center;}
.prep-grid>*{padding:0 14px;}
.check-list{margin-top:28px;border-top:1px solid var(--line-light);}
.check-list li{
  display:flex;gap:18px;padding:22px 0;border-bottom:1px solid var(--line-light);
}
.check-list .num{
  font-family:var(--font-mono);font-size:13px;color:var(--accent);letter-spacing:.1em;flex:0 0 28px;padding-top:4px;
}
.check-list h3{font-size:1.08rem;font-weight:600;}
.check-list p{margin-top:6px;color:var(--text-2);font-size:15.5px;}
.prep-fig{margin-top:8px;}
.prep-fig img{width:100%;aspect-ratio:4/5;object-fit:cover;object-position:center;border-radius:var(--radius-card);border:1px solid var(--line-light);}
.prep-fig figcaption{margin-top:10px;font-size:13px;color:var(--text-2);text-align:center;}

/* ---------- 交替图文 ---------- */
.split{display:flex;flex-wrap:wrap;align-items:center;margin:0 -14px;padding:44px 0;border-top:1px solid var(--line-light);}
.split:first-of-type{border-top:0;padding-top:0;}
.split>*{padding:0 14px;}
.split-media{flex:0 0 41.6667%;max-width:41.6667%;}
.split-body{flex:0 0 58.3333%;max-width:58.3333%;}
.split.rev .split-media{order:2;}
.split.rev .split-body{order:1;}
.split-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;object-position:center;
  border-radius:var(--radius-card);border:1px solid var(--line-light);
}
.split-body h3{margin-top:10px;}
.split-body p{margin-top:10px;color:var(--text-2);}
.split-list{margin-top:14px;}
.split-list li{
  position:relative;padding-left:20px;margin-top:8px;color:var(--text-2);font-size:15.5px;
}
.split-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:1px;background:var(--accent);
}
.text-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14.5px;font-weight:600;color:var(--brand);
  border-bottom:1px solid transparent;transition:border-color .2s ease,color .2s ease;
}
.text-link:hover{border-bottom-color:var(--brand);color:var(--brand-2);}

/* ---------- FAQ ---------- */
.faq{max-width:860px;margin-top:8px;}
.faq details{border-bottom:1px solid var(--line-light);}
.faq details:first-of-type{border-top:1px solid var(--line-light);}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:64px;padding:18px 0;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;color:var(--text-1);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{
  content:"+";flex:0 0 auto;font-size:22px;font-weight:400;color:var(--brand);line-height:1;transition:color .2s ease;
}
.faq details[open] summary::after{content:"−";color:var(--accent);}
.faq summary:hover{color:var(--brand);}
.faq .faq-a{padding:0 0 26px;max-width:820px;color:var(--text-2);line-height:1.9;}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;color:var(--text-inv);overflow:hidden;
  background:
    linear-gradient(120deg,rgba(10,15,14,0.9),rgba(10,15,14,0.76)),
    url('/assets/images/backpic/back-3.png') center/cover no-repeat;
}
.cta-inner{
  position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:26px;padding:56px 0;min-height:200px;
}
.cta-inner h2{color:var(--text-inv);margin-top:0;max-width:16em;}
.cta-inner p{margin-top:12px;color:var(--text-inv-2);max-width:560px;}

/* ---------- 固定转化条 ---------- */
.sticky-bar{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:flex;align-items:center;gap:18px;
  max-width:560px;padding:10px 12px 10px 20px;
  background:var(--ink-800);border:1px solid var(--line-dark);border-radius:10px;
  box-shadow:0 14px 34px rgba(10,15,14,.28);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s;
}
.sticky-bar.show{opacity:1;visibility:visible;transform:none;}
.sticky-bar p{font-size:14px;color:var(--text-inv-2);line-height:1.5;}
.sticky-bar p strong{display:block;color:var(--text-inv);font-size:14.5px;font-weight:600;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:var(--text-inv);border-top:1px solid var(--line-dark);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;}
.footer-col h4{font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--text-inv-2);margin-bottom:16px;}
.footer-col a{display:block;font-size:14.5px;color:var(--text-inv-2);padding:5px 0;transition:color .2s ease,transform .2s ease;}
.footer-col a:hover{color:var(--text-inv);transform:translateX(2px);}
.footer-brand .brand-1{font-size:23px;}
.footer-brand .brand-2{font-size:12px;letter-spacing:.34em;}
.footer-note{margin-top:14px;font-size:13.5px;color:var(--text-inv-2);max-width:20em;line-height:1.7;}
.footer-col .plain{font-size:13.5px;color:var(--text-inv-2);line-height:1.8;margin-bottom:8px;}
.sub-form{display:flex;gap:8px;}
.sub-form input{
  flex:1 1 auto;min-width:0;height:44px;padding:0 12px;
  background:var(--ink-800);border:1px solid var(--line-dark);border-radius:var(--radius-btn);
  color:var(--text-inv);font-size:14px;
}
.sub-form input::placeholder{color:rgba(169,181,175,.7);}
.sub-form input:focus{border-color:var(--brand-2);outline:none;box-shadow:0 0 0 2px rgba(20,122,115,.3);}
.sub-form button{
  height:44px;padding:0 18px;border:0;border-radius:var(--radius-btn);
  background:var(--brand);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  transition:background-color .2s ease;
}
.sub-form button:hover{background:var(--brand-2);}
.sub-form button:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.sub-hint{margin-top:10px;font-size:12.5px;color:rgba(169,181,175,.8);line-height:1.7;}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  margin-top:56px;padding:22px 0 26px;border-top:1px solid var(--line-dark);
  font-size:12.5px;color:rgba(169,181,175,.78);
}
.to-top{color:var(--text-inv-2);font-size:12.5px;}
.to-top:hover{color:var(--accent);}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease;}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--rail-w:200px;}
  .container{padding:0 32px;}
  .rail-inner{padding:24px 16px 20px;}
  .sec{padding:72px 0;}
}
@media (max-width:1023px){
  .rail{display:none;}
  .topbar{display:flex;}
  .page{margin-left:0;padding-top:60px;}
  .container{padding:0 32px;}
  .hero-inner{padding-top:64px;padding-bottom:56px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .sticky-bar{right:16px;bottom:16px;max-width:calc(100% - 32px);}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8;}
  .container{padding:0 20px;}
  .sec{padding:52px 0;}
  .hero-inner{padding-top:48px;padding-bottom:44px;}
  .hero h1{font-size:clamp(1.75rem,7vw,2.3rem);}
  .hero-sub{font-size:15.5px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .stats{grid-template-columns:1fr;gap:16px;margin-top:38px;padding-top:20px;}
  .stat-num{font-size:1.5rem;}
  .timeline::before{left:8px;}
  .tl-item{padding-left:40px;padding-bottom:30px;}
  .tl-dot{left:0;top:6px;width:15px;height:15px;}
  .split{padding:32px 0;margin:0;}
  .split>*{padding:0;}
  .split-media,.split-body{flex:0 0 100%;max-width:100%;order:0!important;}
  .split-media{margin-bottom:20px;}
  .prep-grid{margin:0;}
  .prep-grid>*{padding:0;}
  .prep-fig{margin-top:28px;}
  .faq summary{font-size:15.5px;padding:16px 0;}
  .cta-inner{padding:44px 0;flex-direction:column;align-items:flex-start;}
  .cta-inner .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-top:52px;}
  .footer-bottom{margin-top:36px;}
  .sticky-bar{
    left:0;right:0;bottom:0;max-width:none;border-radius:0;
    padding:8px 20px calc(8px + env(safe-area-inset-bottom,0px));
    gap:12px;justify-content:space-between;
  }
  .sticky-bar p{font-size:12.5px;}
  .sticky-bar p strong{display:none;}
  .sticky-bar .btn{height:40px;padding:0 16px;font-size:13.5px;flex:0 0 auto;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;}
  .reveal{opacity:1;transform:none;}
  .hero::after{animation:none;}
}

/* roulang page: category2 */
:root{
  --ink-900:#0A0F0E;
  --ink-800:#111917;
  --ink-700:#1B2623;
  --paper:#F4F2EA;
  --paper-2:#EAE7DC;
  --text-1:#14201D;
  --text-2:#5A6662;
  --text-inv:#F2F5EF;
  --text-inv-2:#A9B5AF;
  --brand:#0E5B57;
  --brand-2:#147A73;
  --accent:#E2683C;
  --line-dark:rgba(242,245,239,.12);
  --line-light:#D9D5C8;
  --ok:#2F7D5B;
  --r-card:10px;
  --r-btn:8px;
  --r-input:8px;
  --sh-card:0 8px 24px rgba(10,15,14,.06);
  --sh-soft:0 4px 16px rgba(10,15,14,.05);
  --rail-w:232px;
  --font-sans:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"SFMono-Regular",ui-monospace,"JetBrains Mono",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  color:var(--text-1);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover,a:focus{color:var(--brand-2)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;color:var(--text-1);font-style:normal}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
input,button,select,textarea{font-family:inherit}
::selection{background:rgba(226,104,60,.22);color:var(--text-1)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 48px}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--paper2{background:var(--paper-2)}
.section--ink{background:var(--ink-900)}

/* ---------- 左侧竖向导航 ---------- */
.rail{
  position:fixed;top:0;left:0;bottom:0;
  width:var(--rail-w);
  background:var(--ink-900);
  border-right:1px solid var(--line-dark);
  padding:30px 20px 24px;
  display:flex;flex-direction:column;
  overflow-y:auto;
  z-index:60;
}
.brand{display:block;text-decoration:none;line-height:1.15;margin-bottom:26px}
.brand-1{display:block;font-size:22px;font-weight:800;color:var(--text-inv);letter-spacing:.01em}
.brand-2{display:block;font-size:12.5px;font-weight:500;color:var(--accent);letter-spacing:.32em;margin-top:5px}
.footer-brand .brand{margin-bottom:0}
.rail-nav{display:flex;flex-direction:column;gap:2px}
.rail-nav a{
  display:flex;align-items:baseline;gap:10px;
  padding:11px 12px 11px 15px;
  border-left:3px solid transparent;
  border-radius:0 8px 8px 0;
  color:var(--text-inv-2);
  font-size:14.5px;font-weight:500;
  transition:color .2s ease,transform .2s ease,background .2s ease,border-color .2s ease;
}
.rail-nav a:hover{color:var(--text-inv);transform:translateX(2px);background:rgba(242,245,239,.05)}
.rail-nav a.is-active{
  color:var(--text-inv);
  border-left-color:var(--accent);
  background:rgba(242,245,239,.06);
  font-weight:600;
}
.rail-nav .idx{
  font-family:var(--font-mono);
  font-size:11.5px;font-weight:500;
  color:var(--accent);
  letter-spacing:.06em;
  flex:0 0 auto;
}
.rail-divider{height:1px;background:var(--line-dark);margin:20px 0}
.rail-search{position:relative;display:flex;align-items:center;margin:0 0 16px}
.rail-search .s-ico{
  position:absolute;left:11px;top:50%;transform:translateY(-50%);
  font-size:14px;line-height:1;color:var(--text-inv-2);pointer-events:none;
}
.rail-search input{
  width:100%;height:40px;
  padding:0 12px 0 33px;
  border-radius:var(--r-input);
  border:1px solid var(--line-dark);
  background:rgba(242,245,239,.05);
  color:var(--text-inv);
  font-size:13.5px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.rail-search input::placeholder{color:rgba(169,181,175,.75)}
.rail-search input:focus{
  outline:none;
  border-color:var(--brand-2);
  box-shadow:0 0 0 2px rgba(20,122,115,.35);
}
.rail-cta{width:100%;justify-content:center;height:46px;margin-bottom:18px}
.rail-copy{
  margin:auto 0 0;
  font-family:var(--font-mono);
  font-size:11.5px;
  color:rgba(169,181,175,.72);
  letter-spacing:.02em;
}
.rail-mask{position:fixed;inset:0;background:rgba(10,15,14,.62);opacity:0;pointer-events:none;transition:opacity .3s ease;z-index:80;backdrop-filter:blur(2px)}
.rail-mask.is-on{opacity:1;pointer-events:auto}

/* ---------- 顶部移动栏 ---------- */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:60px;
  align-items:center;justify-content:space-between;
  padding:0 20px;
  background:rgba(10,15,14,.96);
  border-bottom:1px solid var(--line-dark);
  backdrop-filter:blur(10px);
  z-index:70;
}
.brand-sm{margin:0;display:flex;align-items:baseline;gap:7px}
.brand-sm .brand-1{font-size:16px;letter-spacing:0}
.brand-sm .brand-2{font-size:10.5px;margin-top:0;letter-spacing:.2em}
.burger{
  width:42px;height:40px;
  display:inline-flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;
  background:transparent;border:1px solid var(--line-dark);border-radius:var(--r-btn);
  cursor:pointer;padding:0;
}
.burger span{display:block;width:18px;height:1.5px;background:var(--text-inv);transition:transform .25s ease,opacity .25s ease}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}
.burger:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ---------- 主体壳 ---------- */
.shell{margin-left:var(--rail-w);min-height:100vh;display:flex;flex-direction:column}
main{flex:1 0 auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 24px;
  border:1px solid transparent;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  cursor:pointer;
  transition:background .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.btn .arw{display:inline-block;transition:transform .22s ease;font-weight:500}
.btn:hover .arw{transform:translateX(3px)}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-2);color:#fff}
.btn-ghost{background:transparent;color:var(--text-inv);border-color:rgba(242,245,239,.32)}
.btn-ghost:hover{background:rgba(242,245,239,.1);color:var(--text-inv)}
.btn-outline{background:transparent;color:var(--text-1);border-color:var(--line-light)}
.btn-outline:hover{background:rgba(20,32,29,.06);color:var(--text-1)}
.btn-light{background:var(--paper);color:var(--ink-900)}
.btn-light:hover{background:#fff;color:var(--ink-900)}
.btn:active{transform:translateY(1px)}

.link-more{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:600;color:var(--brand);
  padding-bottom:2px;
  background-image:linear-gradient(var(--brand),var(--brand));
  background-size:0 1px;background-position:0 100%;background-repeat:no-repeat;
  transition:background-size .25s ease,color .2s ease;
}
.link-more:hover{background-size:100% 1px;color:var(--brand-2)}
.link-more:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* ---------- 徽章 / 小标签 ---------- */
.badge{
  display:inline-flex;align-items:center;height:26px;padding:0 10px;
  border:1px solid var(--line-light);border-radius:8px;
  font-size:12.5px;font-weight:500;color:var(--text-2);
  background:transparent;letter-spacing:.02em;
}
.badge--dark{border-color:var(--line-dark);color:var(--text-inv-2)}
.eyebrow{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);
  font-size:12.5px;font-weight:500;letter-spacing:.18em;
  color:var(--accent);margin:0 0 12px;
}
.eyebrow::after{content:"";display:block;width:28px;height:1px;background:var(--accent)}

/* ---------- 板块标题 ---------- */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:34px}
.sec-title{font-size:clamp(1.5rem,2.6vw,2.125rem);font-weight:700;line-height:1.25}
.sec-sub{margin:12px 0 0;max-width:640px;font-size:15px;color:var(--text-2);line-height:1.8}

/* ---------- Hero ---------- */
.page-hero{position:relative;background:var(--ink-900);color:var(--text-inv);overflow:hidden;padding:80px 0 68px}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(10,15,14,.62),rgba(10,15,14,.92)),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;z-index:1;
  background-image:
    radial-gradient(1.6px 1.6px at 12% 24%,rgba(242,245,239,.6) 50%,transparent 51%),
    radial-gradient(1.6px 1.6px at 66% 16%,rgba(242,245,239,.42) 50%,transparent 51%),
    radial-gradient(1.8px 1.8px at 84% 64%,rgba(226,104,60,.62) 50%,transparent 51%),
    radial-gradient(1.6px 1.6px at 34% 76%,rgba(242,245,239,.36) 50%,transparent 51%),
    radial-gradient(1.4px 1.4px at 48% 38%,rgba(242,245,239,.28) 50%,transparent 51%);
  animation:twinkle 8s ease-in-out infinite;
}
@keyframes twinkle{0%,100%{opacity:.5}50%{opacity:1}}
.page-hero .container{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;color:var(--text-inv-2);margin-bottom:24px}
.crumbs a{color:var(--text-inv-2)}
.crumbs a:hover{color:var(--text-inv)}
.crumbs .sep{font-family:var(--font-mono);opacity:.5}
.page-hero .badge{margin-bottom:16px}
.page-hero h1{
  font-size:clamp(1.95rem,3.7vw,3.15rem);
  font-weight:800;line-height:1.18;letter-spacing:0;
  color:var(--text-inv);
  max-width:840px;
}
.hero-lede{margin:18px 0 0;max-width:660px;font-size:17px;line-height:1.8;color:var(--text-inv-2)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{display:flex;flex-wrap:wrap;margin-top:44px;padding-top:26px;border-top:1px solid var(--line-dark)}
.hero-stats div{padding-right:38px;margin-right:38px;border-right:1px solid var(--line-dark)}
.hero-stats div:last-child{border-right:0;margin-right:0;padding-right:0}
.hero-stats b{display:block;font-family:var(--font-mono);font-size:26px;font-weight:600;color:var(--text-inv);letter-spacing:.02em;line-height:1.2}
.hero-stats span{font-size:13px;color:var(--text-inv-2)}

/* ---------- 交替图文 ---------- */
.split{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;padding:52px 0}
.split--flip{grid-template-columns:5fr 7fr}
.split--flip .split-media{order:1}
.split--flip .split-body{order:2}
.split-media figure{
  position:relative;overflow:hidden;
  border-radius:var(--r-card);
  background:var(--ink-800);
  box-shadow:var(--sh-card);
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;object-position:center}
.split-media figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:26px 18px 14px;
  font-size:12.5px;letter-spacing:.04em;color:var(--text-inv);
  background:linear-gradient(180deg,rgba(10,15,14,0),rgba(10,15,14,.86));
}
.split-no{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;font-weight:500;
  letter-spacing:.14em;color:var(--accent);
  margin:0 0 14px;
}
.split-no::after{content:"";display:block;width:28px;height:1px;background:var(--accent)}
.split-body h3{font-size:1.375rem;font-weight:700;margin:0 0 12px}
.split-body p{font-size:15.5px;line-height:1.9;color:var(--text-2);margin:0 0 14px}
.split-body .link-more{margin-top:6px}
hr.rule{border:0;border-top:1px solid var(--line-light);margin:0}

/* ---------- 三步流程 ---------- */
.steps{margin-bottom:-24px}
.steps .cell{margin-bottom:24px}
.step{
  position:relative;
  background:#fff;
  border:1px solid var(--line-light);
  border-radius:var(--r-card);
  padding:28px 24px 24px;
  height:100%;
  box-shadow:var(--sh-soft);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.step:hover{transform:translateY(-4px);border-color:rgba(226,104,60,.45);box-shadow:var(--sh-card)}
.step-no{display:block;font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.16em;color:var(--accent)}
.step h3{font-size:1.125rem;font-weight:700;margin:12px 0 8px}
.step p{font-size:14.5px;line-height:1.8;color:var(--text-2);margin:0}
.bar{height:2px;background:var(--line-light);border-radius:2px;overflow:hidden;margin-top:20px}
.bar i{display:block;height:100%;background:var(--brand);border-radius:2px}
.step--1 .bar i{width:34%}
.step--2 .bar i{width:67%}
.step--3 .bar i{width:100%}

/* ---------- 双栏面板 ---------- */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.panel{
  background:#fff;
  border:1px solid var(--line-light);
  border-radius:var(--r-card);
  padding:32px 28px 28px;
  box-shadow:var(--sh-soft);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.panel:hover{transform:translateY(-4px);border-color:rgba(226,104,60,.45);box-shadow:var(--sh-card)}
.panel h3{font-size:1.2rem;font-weight:700;margin:0 0 6px}
.panel-sub{font-size:14px;color:var(--text-2);margin:0 0 10px}
.panel ul{margin:16px 0 20px}
.panel li{position:relative;padding-left:22px;margin-bottom:11px;font-size:15px;line-height:1.75;color:var(--text-2)}
.panel li:last-child{margin-bottom:0}
.panel li::before{content:"";position:absolute;left:0;top:.66em;width:8px;height:8px;border-radius:2px;background:var(--accent)}

/* ---------- 数据条 + 纯文字带 ---------- */
.stats-row{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line-light);
  border-bottom:1px solid var(--line-light);
}
.stat{padding:28px 24px;border-right:1px solid var(--line-light)}
.stat:last-child{border-right:0}
.stat b{display:block;font-family:var(--font-mono);font-size:32px;font-weight:600;line-height:1.15;color:var(--brand);letter-spacing:-.01em}
.stat small{display:block;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;color:var(--accent);margin-bottom:6px}
.stat span{display:block;font-size:13.5px;color:var(--text-2);margin-top:6px}
.prose-band{max-width:820px;margin-top:44px}
.prose-band p{font-size:16.5px;line-height:1.9;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq{max-width:900px}
.faq details{border-bottom:1px solid var(--line-light)}
.faq details:first-of-type{border-top:1px solid var(--line-light)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:64px;padding:16px 0;
  cursor:pointer;list-style:none;
  font-size:16.5px;font-weight:600;color:var(--text-1);
  transition:color .2s ease;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;border-radius:4px}
.faq summary:hover{color:var(--brand)}
.faq .ic{
  position:relative;flex:0 0 22px;width:22px;height:22px;
  border:1px solid var(--line-light);border-radius:50%;
  transition:border-color .2s ease,background .2s ease;
}
.faq .ic::before,.faq .ic::after{content:"";position:absolute;background:var(--text-2);transition:transform .22s ease,background .2s ease}
.faq .ic::before{left:5px;right:5px;top:10px;height:1.5px}
.faq .ic::after{top:5px;bottom:5px;left:10px;width:1.5px}
.faq details[open] summary{color:var(--brand)}
.faq details[open] .ic{border-color:rgba(14,91,87,.5)}
.faq details[open] .ic::after{transform:scaleY(0)}
.faq details[open] .ic::before{background:var(--brand)}
.faq .a{max-width:820px;padding:0 0 24px;font-size:15.5px;line-height:1.9;color:var(--text-2)}
.faq details[open] .a{animation:softIn .26s ease both}
@keyframes softIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* ---------- CTA 带 ---------- */
.cta{position:relative;background:var(--ink-900);overflow:hidden;padding:76px 0}
.cta::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(10,15,14,.72),rgba(10,15,14,.94)),url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
}
.cta .container{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta h2{font-size:clamp(1.4rem,2.4vw,1.95rem);color:var(--text-inv);font-weight:700;line-height:1.28}
.cta p{margin:12px 0 0;font-size:15px;color:var(--text-inv-2);line-height:1.8}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-900);color:var(--text-inv-2);border-top:1px solid var(--line-dark);padding:72px 0 84px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:44px}
.footer-col h4{font-size:13.5px;font-weight:600;letter-spacing:.06em;color:var(--text-inv);margin:0 0 16px}
.footer-col a{display:block;font-size:14px;color:var(--text-inv-2);padding:5px 0;transition:color .2s ease,transform .2s ease}
.footer-col a:hover{color:var(--text-inv);transform:translateX(2px)}
.footer-note{font-size:13.5px;line-height:1.8;color:var(--text-inv-2);margin:16px 0 0}
.footer-col .plain{font-size:13.5px;line-height:1.8;color:var(--text-inv-2);margin:0 0 8px}
.sub-form{display:flex;gap:8px}
.sub-form input{
  flex:1 1 auto;min-width:0;height:44px;padding:0 14px;
  border:1px solid var(--line-dark);border-radius:var(--r-input);
  background:rgba(242,245,239,.05);color:var(--text-inv);font-size:14px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.sub-form input::placeholder{color:rgba(169,181,175,.78)}
.sub-form input:focus{outline:none;border-color:var(--brand-2);box-shadow:0 0 0 2px rgba(20,122,115,.35)}
.sub-form button{
  flex:0 0 auto;height:44px;padding:0 18px;
  border:0;border-radius:var(--r-btn);
  background:var(--brand);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  transition:background .2s ease;
}
.sub-form button:hover{background:var(--brand-2)}
.sub-form button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.sub-hint{font-size:12.5px;line-height:1.7;color:rgba(169,181,175,.85);margin:10px 0 0}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line-dark);padding-top:20px;
  font-size:13px;color:var(--text-inv-2);
}
.to-top{color:var(--text-inv-2);font-size:13px}
.to-top:hover{color:var(--text-inv)}

/* ---------- 固定转化条 ---------- */
.dock{
  position:fixed;left:var(--rail-w);right:0;bottom:0;z-index:50;
  padding:10px 0;
  background:rgba(10,15,14,.96);
  border-top:1px solid var(--line-dark);
  backdrop-filter:blur(10px);
  transform:translateY(120%);
  transition:transform .32s ease;
}
.dock.is-on{transform:none}
.dock-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px}
.dock p{margin:0;font-size:14px;color:var(--text-inv-2);line-height:1.5}
.dock .btn{height:44px;padding:0 20px;font-size:14.5px}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (min-width:1024px) and (max-width:1279px){
  :root{--rail-w:200px}
  .container{padding:0 40px}
}
@media (max-width:1023px){
  :root{--rail-w:0px}
  .container{padding:0 32px}
  .rail{
    width:300px;
    transform:translateX(-104%);
    transition:transform .3s ease;
    padding:24px 20px 28px;
    z-index:90;
    box-shadow:0 0 40px rgba(10,15,14,.5);
  }
  .rail.is-open{transform:none}
  .rail-nav a{font-size:16px;padding:14px 12px 14px 15px}
  .rail-copy{margin-top:24px}
  .shell{margin-left:0;padding-top:60px}
  .topbar{display:flex}
  .dock{left:0;padding:8px 0}
  .dock p{font-size:13px}
  .dock .btn{height:40px;padding:0 16px;font-size:14px}
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .page-hero{padding:64px 0 56px}
  .split{padding:44px 0;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-col:first-child{grid-column:1 / -1}
  .cta{padding:60px 0}
}
@media (max-width:900px){
  .split,.split--flip{grid-template-columns:1fr;gap:24px;padding:36px 0}
  .split--flip .split-media,.split--flip .split-body{order:0}
  .duo{grid-template-columns:1fr}
  .stats-row{grid-template-columns:1fr 1fr}
  .stat:nth-child(2n){border-right:0}
  .stat:nth-child(-n+2){border-bottom:1px solid var(--line-light)}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:52px 0}
  .section--tight{padding:44px 0}
  .page-hero{padding:48px 0 44px}
  .hero-lede{font-size:15.5px}
  .hero-actions{gap:12px}
  .hero-actions .btn{width:100%}
  .hero-stats div{padding-right:22px;margin-right:22px}
  .hero-stats b{font-size:22px}
  .hero-stats span{font-size:12px}
  .cta .container{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .dock-inner{gap:10px}
  .dock p{font-size:12.5px;max-width:56%}
  .stat{padding:22px 18px}
  .stat b{font-size:26px}
  .panel{padding:26px 22px}
  .prose-band p{font-size:15.5px}
}
@media (max-width:520px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .dock p{display:none}
  .dock-inner{justify-content:center}
  .dock .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
  .dock{transform:none}
}

/* roulang page: category4 */
:root{
  --ink-900:#0A0F0E;
  --ink-800:#111917;
  --ink-700:#1B2623;
  --paper:#F4F2EA;
  --paper-2:#EAE7DC;
  --text-1:#14201D;
  --text-2:#5A6662;
  --text-inv:#F2F5EF;
  --text-inv-2:#A9B5AF;
  --brand:#0E5B57;
  --brand-2:#147A73;
  --accent:#E2683C;
  --line-dark:rgba(242,245,239,0.12);
  --line-light:#D9D5C8;
  --ok:#2F7D5B;
  --radius:10px;
  --radius-sm:8px;
  --shadow:0 8px 24px rgba(10,15,14,0.06);
  --shadow-lift:0 14px 34px rgba(10,15,14,0.10);
  --ease:.25s ease;
  --rail:232px;
}

*,*::before,*::after{box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  margin:0;
  font-family:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text-1);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding-left:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand-2);}
button{font-family:inherit;cursor:pointer;border:0;}
input,textarea,select{font-family:inherit;font-size:inherit;}

:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:4px;
}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:999;
  background:var(--brand);color:#fff;padding:12px 20px;border-radius:0 0 8px 0;
}
.skip-link:focus{left:0;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 48px;
}

/* ============ 左侧竖栏 ============ */
.rail{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--rail);
  background:var(--ink-900);
  border-right:1px solid var(--line-dark);
  padding:34px 22px 26px;
  display:flex;
  flex-direction:column;
  gap:26px;
  overflow-y:auto;
  z-index:60;
  scrollbar-width:thin;
}
.rail::-webkit-scrollbar{width:5px;}
.rail::-webkit-scrollbar-thumb{background:rgba(242,245,239,.16);border-radius:4px;}

.rail .brand{
  display:block;
  color:var(--text-inv);
  line-height:1.18;
  font-weight:800;
  letter-spacing:0;
}
.rail .brand .brand-1{display:block;font-size:23px;}
.rail .brand .brand-2{
  display:block;font-size:13px;color:var(--accent);
  font-weight:600;letter-spacing:.16em;margin-top:4px;
}

.rail-sep{height:1px;background:var(--line-dark);border:0;margin:0;}

.rail-nav{display:flex;flex-direction:column;gap:3px;}
.rail-nav a{
  position:relative;
  display:flex;align-items:center;gap:10px;
  padding:11px 10px 11px 14px;
  border-radius:8px;
  color:var(--text-inv-2);
  font-size:14.5px;
  line-height:1.35;
  transition:color var(--ease),background var(--ease);
}
.rail-nav a .idx{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:11px;
  color:rgba(169,181,175,.65);
  letter-spacing:.06em;
}
.rail-nav a::before{
  content:"";
  position:absolute;left:0;top:50%;
  transform:translateY(-50%);
  width:3px;height:0;
  background:var(--accent);
  border-radius:2px;
  transition:height var(--ease);
}
.rail-nav a:hover{color:var(--text-inv);background:rgba(242,245,239,.055);}
.rail-nav a:hover::before{height:58%;}
.rail-nav a.is-active{
  color:var(--text-inv);
  background:rgba(242,245,239,.075);
  font-weight:600;
}
.rail-nav a.is-active::before{height:70%;}

.rail-search{position:relative;}
.rail-search .fa-magnifying-glass{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  font-size:12px;color:rgba(169,181,175,.8);pointer-events:none;
}
.rail-search input{
  width:100%;height:40px;
  padding:0 12px 0 34px;
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  border-radius:8px;
  color:var(--text-inv);
  font-size:13px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.rail-search input::placeholder{color:rgba(169,181,175,.6);}
.rail-search input:focus{
  outline:none;
  border-color:var(--brand-2);
  box-shadow:0 0 0 3px rgba(20,122,115,.28);
}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease);
}
.btn .fa-arrow-right{transition:transform var(--ease);font-size:13px;}
.btn:hover .fa-arrow-right{transform:translateX(3px);}

.btn-primary{background:var(--brand);color:#fff;}
.btn-primary:hover{background:var(--brand-2);color:#fff;}
.btn-primary:active{transform:translateY(1px);}

.btn-ghost{
  background:transparent;color:var(--text-inv);
  border:1px solid var(--line-dark);
}
.btn-ghost:hover{background:rgba(242,245,239,.09);color:var(--text-inv);}

.btn-light{background:var(--paper);color:var(--ink-900);}
.btn-light:hover{background:#fff;color:var(--ink-900);}

.btn-outline{
  background:transparent;color:var(--text-1);
  border:1px solid var(--line-light);
}
.btn-outline:hover{background:rgba(14,91,87,.07);border-color:var(--brand);color:var(--brand);}

.rail .btn-rail{width:100%;margin-top:auto;}

.rail-foot{
  font-size:11px;
  color:rgba(169,181,175,.55);
  line-height:1.7;
  letter-spacing:.02em;
}

/* ============ 移动端顶栏 ============ */
.mob-bar{display:none;}

@media (max-width:1023px){
  .rail{display:none;}
  .mob-bar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:60px;
    padding:0 20px;
    background:var(--ink-900);
    border-bottom:1px solid var(--line-dark);
    z-index:80;
  }
  .mob-bar .brand{
    display:flex;align-items:baseline;gap:6px;
    color:var(--text-inv);font-weight:800;
  }
  .mob-bar .brand .brand-1{font-size:17px;}
  .mob-bar .brand .brand-2{font-size:11px;color:var(--accent);letter-spacing:.14em;font-weight:600;}
  .burger{
    width:42px;height:42px;background:transparent;
    display:flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;
    border-radius:8px;
    transition:background var(--ease);
  }
  .burger:hover{background:rgba(242,245,239,.08);}
  .burger span{display:block;width:20px;height:2px;background:var(--text-inv);border-radius:2px;transition:transform var(--ease),opacity var(--ease);}
  .burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .burger[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
}

.drawer{
  position:fixed;inset:0;
  background:var(--ink-900);
  z-index:90;
  padding:80px 24px 28px;
  display:flex;flex-direction:column;
  transform:translateY(-100%);
  opacity:0;
  visibility:hidden;
  transition:transform .32s ease,opacity .32s ease,visibility .32s ease;
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.drawer-close{
  position:absolute;top:16px;right:16px;
  width:44px;height:44px;border-radius:10px;
  background:rgba(242,245,239,.08);color:var(--text-inv);
  font-size:18px;display:flex;align-items:center;justify-content:center;
}
.drawer-close:hover{background:rgba(242,245,239,.16);}
.drawer-title{
  font-size:12px;letter-spacing:.2em;color:var(--accent);
  font-weight:600;margin-bottom:16px;
}
.drawer-nav{display:flex;flex-direction:column;gap:2px;}
.drawer-nav a{
  display:flex;align-items:center;gap:14px;
  padding:15px 8px;
  border-bottom:1px solid var(--line-dark);
  color:var(--text-inv-2);
  font-size:17px;
  transition:color var(--ease),padding-left var(--ease);
}
.drawer-nav a .idx{
  font-family:ui-monospace,monospace;font-size:12px;
  color:var(--accent);letter-spacing:.06em;
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--text-inv);padding-left:14px;}
.drawer-nav a.is-active{font-weight:600;}
.drawer .btn{margin-top:28px;width:100%;}

/* ============ 内容区 ============ */
.content-area{margin-left:var(--rail);}

@media (max-width:1279px){
  :root{--rail:200px;}
}
@media (max-width:1023px){
  .content-area{margin-left:0;padding-top:60px;}
}

/* ============ Hero ============ */
.page-hero{
  position:relative;
  background:var(--ink-900);
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
  color:var(--text-inv);
  padding:84px 0 68px;
  overflow:hidden;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,15,14,.60),rgba(10,15,14,.92));
}
.page-hero .container{position:relative;z-index:2;}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12.5px;
  letter-spacing:.16em;
  color:var(--accent);
  font-weight:600;
  margin-bottom:22px;
}
.eyebrow::after{
  content:"";display:block;width:36px;height:1px;background:rgba(226,104,60,.6);
}

.page-hero h1{
  font-size:clamp(2rem,4.1vw,3.35rem);
  font-weight:800;
  line-height:1.16;
  letter-spacing:0;
  max-width:16em;
  color:var(--text-inv);
}
.page-hero h1 mark{
  background:none;color:inherit;
  box-shadow:inset 0 -0.32em 0 rgba(226,104,60,.32);
}
.hero-sub{
  margin-top:20px;
  font-size:17px;
  line-height:1.8;
  color:var(--text-inv-2);
  max-width:34em;
}
.hero-actions{
  margin-top:32px;
  display:flex;flex-wrap:wrap;gap:14px;
}

.hero-stats{
  margin-top:52px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line-dark);
  padding-top:28px;
  gap:24px;
}
.hero-stat .num{
  font-size:clamp(1.6rem,2.6vw,2.1rem);
  font-weight:800;
  color:var(--text-inv);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
}
.hero-stat .num i{font-style:normal;font-size:.55em;color:var(--accent);margin-left:4px;}
.hero-stat .lab{
  margin-top:6px;
  font-size:13px;
  color:var(--text-inv-2);
  letter-spacing:.02em;
}

/* ============ 通用板块 ============ */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:var(--paper-2);}

.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:34px;
  flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(1.5rem,2.5vw,2.05rem);
  font-weight:700;
  line-height:1.28;
  color:var(--text-1);
}
.section-head .head-desc{
  margin-top:10px;
  font-size:14.5px;
  color:var(--text-2);
  max-width:38em;
}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;
  color:var(--brand);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
  transition:border-color var(--ease),color var(--ease);
  white-space:nowrap;
}
.link-more:hover{border-color:var(--brand);color:var(--brand-2);}
.link-more .fa-arrow-right{font-size:12px;transition:transform var(--ease);}
.link-more:hover .fa-arrow-right{transform:translateX(3px);}

/* ============ 筛选标签 ============ */
.filter-bar{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-bottom:34px;
}
.filter-btn{
  height:42px;padding:0 20px;
  border-radius:8px;
  border:1px solid var(--line-light);
  background:#fff;
  color:var(--text-2);
  font-size:14px;
  font-weight:500;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease);
}
.filter-btn:hover{border-color:var(--brand);color:var(--brand);}
.filter-btn:active{transform:translateY(1px);}
.filter-btn.is-on{
  background:var(--brand);
  border-color:var(--brand);
  color:#fff;
  font-weight:600;
}
.filter-btn.is-on:hover{background:var(--brand-2);border-color:var(--brand-2);color:#fff;}

/* ============ 卡片网格 ============ */
.topic-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.topic-card{
  background:#fff;
  border:1px solid var(--line-light);
  border-radius:var(--radius);
  padding:26px 24px 24px;
  box-shadow:var(--shadow);
  display:flex;flex-direction:column;
  transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease),opacity .3s ease;
}
.topic-card:hover{
  transform:translateY(-4px);
  border-color:rgba(226,104,60,.45);
  box-shadow:var(--shadow-lift);
}
.topic-card.is-hidden{display:none;}

.card-top{
  display:flex;align-items:center;justify-content:space-between;
  gap:12px;margin-bottom:18px;
}
.card-idx{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:12.5px;
  color:var(--accent);
  letter-spacing:.08em;
  display:flex;align-items:center;gap:8px;
}
.card-idx::after{content:"";display:block;width:20px;height:1px;background:rgba(226,104,60,.5);}
.badge-tag{
  font-size:12px;
  padding:3px 10px;
  border:1px solid var(--line-light);
  border-radius:8px;
  color:var(--text-2);
  font-weight:500;
  white-space:nowrap;
}
.topic-card h3{
  font-size:1.22rem;
  font-weight:600;
  line-height:1.45;
  color:var(--text-1);
  margin-bottom:12px;
}
.topic-card p{
  font-size:14.5px;
  line-height:1.85;
  color:var(--text-2);
  flex:1;
}
.card-icon{
  margin-top:22px;
  width:40px;height:40px;
  display:flex;align-items:center;justify-content:center;
  border-radius:10px;
  background:rgba(14,91,87,.08);
  color:var(--brand);
  font-size:15px;
}

/* ============ 图文流程区 ============ */
.split{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:56px;
  align-items:center;
}
.split-media{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line-light);
  box-shadow:var(--shadow);
  aspect-ratio:4/3;
  background:var(--ink-800);
}
.split-media img{
  width:100%;height:100%;object-fit:cover;object-position:center;
  transition:transform .5s ease;
}
.split-media:hover img{transform:scale(1.03);}
.split-media .media-tag{
  position:absolute;left:16px;top:16px;
  background:rgba(10,15,14,.72);
  color:var(--text-inv);
  font-size:12px;
  padding:5px 12px;
  border-radius:8px;
  border:1px solid var(--line-dark);
  letter-spacing:.04em;
}

.step-list{display:flex;flex-direction:column;gap:0;}
.step-item{
  display:flex;gap:20px;
  padding:26px 0;
  border-bottom:1px solid var(--line-light);
}
.step-item:first-child{padding-top:0;}
.step-item:last-child{border-bottom:0;padding-bottom:0;}
.step-num{
  flex:0 0 auto;
  width:42px;height:42px;
  border-radius:10px;
  background:var(--ink-900);
  color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  font-family:ui-monospace,monospace;
  font-size:14px;
  font-weight:600;
  letter-spacing:.04em;
}
.step-item h3{
  font-size:1.12rem;
  font-weight:600;
  color:var(--text-1);
  margin-bottom:8px;
}
.step-item p{
  font-size:14.5px;
  line-height:1.85;
  color:var(--text-2);
}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;}
.faq-item{border-bottom:1px solid var(--line-light);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:64px;
  padding:20px 0;
  font-size:17px;
  font-weight:600;
  color:var(--text-1);
  transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  flex:0 0 auto;
  font-size:22px;
  font-weight:400;
  color:var(--brand);
  line-height:1;
  transition:transform var(--ease),color var(--ease);
}
.faq-item summary:hover{color:var(--brand);}
.faq-item[open] summary::after{content:"−";color:var(--accent);}
.faq-answer{
  max-width:820px;
  padding:0 0 26px;
  font-size:15px;
  line-height:1.9;
  color:var(--text-2);
}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;
  background:var(--ink-900);
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;
  background-position:center;
  color:var(--text-inv);
  padding:64px 0;
  overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,15,14,.92),rgba(10,15,14,.72));
}
.cta-band .container{position:relative;z-index:2;}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-inner h2{
  font-size:clamp(1.4rem,2.4vw,1.95rem);
  font-weight:700;
  color:var(--text-inv);
  line-height:1.3;
}
.cta-inner p{
  margin-top:10px;
  font-size:15px;
  color:var(--text-inv-2);
  max-width:32em;
}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-900);
  border-top:1px solid var(--line-dark);
  color:var(--text-inv-2);
  padding:68px 0 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:48px;
}
.footer-brand .brand{
  display:block;
  color:var(--text-inv);
  font-weight:800;
  line-height:1.18;
  margin-bottom:16px;
}
.footer-brand .brand-1{display:block;font-size:22px;}
.footer-brand .brand-2{display:block;font-size:12.5px;color:var(--accent);letter-spacing:.16em;margin-top:4px;font-weight:600;}
.footer-note{font-size:14px;line-height:1.8;color:var(--text-inv-2);}

.footer-col h4{
  font-size:14px;
  font-weight:600;
  color:var(--text-inv);
  margin-bottom:18px;
  letter-spacing:.04em;
}
.footer-col a{
  display:block;
  font-size:14px;
  color:var(--text-inv-2);
  padding:6px 0;
  transition:color var(--ease),transform var(--ease);
}
.footer-col a:hover{color:var(--text-inv);transform:translateX(2px);}
.footer-col .plain{
  font-size:13.5px;
  line-height:1.9;
  color:var(--text-inv-2);
  margin-bottom:8px;
}

.sub-form{display:flex;gap:8px;margin-bottom:12px;}
.sub-form input{
  flex:1;min-width:0;
  height:48px;
  padding:0 14px;
  background:var(--ink-800);
  border:1px solid var(--line-dark);
  border-radius:var(--radius-sm);
  color:var(--text-inv);
  font-size:14px;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.sub-form input::placeholder{color:rgba(169,181,175,.6);}
.sub-form input:focus{
  outline:none;
  border-color:var(--brand-2);
  box-shadow:0 0 0 3px rgba(20,122,115,.28);
}
.sub-form button{
  height:48px;padding:0 22px;
  border-radius:var(--radius-sm);
  background:var(--brand);
  color:#fff;
  font-size:14px;font-weight:600;
  transition:background var(--ease);
}
.sub-form button:hover{background:var(--brand-2);}
.sub-hint{font-size:12.5px;line-height:1.75;color:rgba(169,181,175,.72);}

.footer-bottom{
  margin-top:52px;
  padding-top:22px;
  border-top:1px solid var(--line-dark);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:12.5px;
  color:rgba(169,181,175,.7);
}
.to-top{
  color:var(--text-inv-2);
  font-size:13px;
  transition:color var(--ease);
}
.to-top:hover{color:var(--accent);}

/* ============ 固定转化条 ============ */
.sticky-cta{
  position:fixed;
  right:24px;bottom:24px;
  z-index:70;
  display:flex;align-items:center;gap:18px;
  background:var(--ink-900);
  border:1px solid var(--line-dark);
  border-radius:var(--radius);
  padding:10px 12px 10px 22px;
  box-shadow:0 16px 40px rgba(10,15,14,.28);
  opacity:0;visibility:hidden;
  transform:translateY(14px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease;
  max-width:calc(100% - 48px);
}
.sticky-cta.is-in{opacity:1;visibility:visible;transform:translateY(0);}
.sticky-cta .txt{
  font-size:13.5px;
  color:var(--text-inv-2);
  line-height:1.4;
  white-space:nowrap;
}
.sticky-cta .btn{height:40px;padding:0 18px;font-size:13.5px;}

/* ============ 动效 ============ */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .6s ease,transform .6s ease;
}
.reveal.is-visible{opacity:1;transform:none;}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1;transform:none;}
  .topic-card:hover{transform:none;}
  .sticky-cta{transform:none;}
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .container{padding:0 32px;}
  .section{padding:64px 0;}
  .section-tight{padding:52px 0;}
  .topic-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
  .split{grid-template-columns:1fr;gap:36px;}
  .split-media{aspect-ratio:16/10;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .page-hero{padding:64px 0 52px;}
  .hero-stats{margin-top:40px;gap:16px;}
}

@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:52px 0;}
  .section-tight{padding:44px 0;}
  body{font-size:15.5px;}
  .page-hero{padding:52px 0 44px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions{gap:10px;}
  .hero-actions .btn{flex:1 1 auto;min-width:140px;}
  .hero-stats{
    grid-template-columns:1fr;
    gap:18px;
    padding-top:22px;
  }
  .hero-stat{display:flex;align-items:baseline;gap:14px;}
  .hero-stat .num{font-size:1.5rem;}
  .hero-stat .lab{margin-top:0;}
  .topic-grid{grid-template-columns:1fr;}
  .filter-bar{
    flex-wrap:nowrap;
    overflow-x:auto;
    padding-bottom:8px;
    scroll-snap-type:x mandatory;
    -webkit-overflow-scrolling:touch;
    scrollbar-width:none;
  }
  .filter-bar::-webkit-scrollbar{display:none;}
  .filter-btn{flex:0 0 auto;scroll-snap-align:start;}
  .section-head{margin-bottom:26px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .sub-form{flex-direction:column;}
  .sub-form button{width:100%;}
  .sticky-cta{
    left:12px;right:12px;bottom:12px;
    padding:10px 12px;
    gap:10px;
  }
  .sticky-cta .txt{font-size:12.5px;white-space:normal;}
  .sticky-cta .btn{height:38px;padding:0 14px;font-size:13px;flex:0 0 auto;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .cta-inner .btn{width:100%;}
  .site-footer{padding:52px 0 24px;}
  .step-item{gap:16px;}
  .step-num{width:38px;height:38px;font-size:13px;}
}

/* roulang page: category5 */
:root{
  --ink-900:#0A0F0E;
  --ink-800:#111917;
  --ink-700:#1B2623;
  --paper:#F4F2EA;
  --paper-2:#EAE7DC;
  --text-1:#14201D;
  --text-2:#5A6662;
  --text-inv:#F2F5EF;
  --text-inv-2:#A9B5AF;
  --brand:#0E5B57;
  --brand-2:#147A73;
  --accent:#E2683C;
  --line-dark:rgba(242,245,239,0.12);
  --line-light:#D9D5C8;
  --ok:#2F7D5B;
  --r-card:10px;
  --r-btn:8px;
  --sh-light:0 8px 24px rgba(10,15,14,0.06);
  --rail-w:232px;
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding:0;
  background:var(--paper);
  color:var(--text-1);
  font-family:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-2);}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
input{border-radius:0;box-shadow:none;}
::selection{background:rgba(226,104,60,0.22);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 48px;
}
.section{padding:96px 0;}
.section--paper2{background:var(--paper-2);}
.section--dark{background:var(--ink-900);color:var(--text-inv);}
.section-head{margin-bottom:32px;max-width:760px;}
.section-head h2{font-size:clamp(1.5rem,2.6vw,2.125rem);line-height:1.25;font-weight:700;}
.section-head p{margin-top:12px;color:var(--text-2);font-size:1rem;}
.section--dark .section-head p{color:var(--text-inv-2);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.8125rem;
  font-weight:500;
  letter-spacing:.12em;
  color:var(--text-2);
  margin-bottom:16px;
}
.eyebrow em{
  font-style:normal;
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  color:var(--accent);
  font-size:.8125rem;
  letter-spacing:.06em;
}
.eyebrow::after{content:"";width:28px;height:1px;background:var(--accent);display:inline-block;}
.tag{
  display:inline-block;
  font-size:.75rem;
  font-weight:500;
  padding:3px 10px;
  border-radius:8px;
  border:1px solid var(--line-light);
  color:var(--text-2);
  background:transparent;
}
.tag--dark{border-color:var(--line-dark);color:var(--text-inv-2);}
.tag--brand{border-color:rgba(14,91,87,.38);color:var(--brand);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  font-size:.95rem;
  font-weight:600;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
  text-align:center;
  line-height:1;
}
.btn .arw{transition:transform .2s ease;font-size:.85rem;}
.btn:hover .arw{transform:translateX(3px);}
.btn--primary{background:var(--brand);color:#fff;}
.btn--primary:hover{background:var(--brand-2);color:#fff;}
.btn--invert{background:var(--paper);color:var(--ink-900);}
.btn--invert:hover{background:#E4E1D5;color:var(--ink-900);}
.btn--ghost{background:transparent;border-color:var(--line-light);color:var(--text-1);}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand);background:rgba(14,91,87,.06);}
.btn--ghost-dark{background:transparent;border-color:var(--line-dark);color:var(--text-inv);}
.btn--ghost-dark:hover{border-color:rgba(226,104,60,.55);color:var(--text-inv);background:rgba(242,245,239,.06);}
.btn:active{transform:translateY(1px);}
.link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:.9375rem;
  font-weight:600;
  color:var(--brand);
  position:relative;
}
.link-more::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-2px;
  height:1px;
  width:0;
  background:var(--brand);
  transition:width .2s ease;
}
.link-more:hover::after{width:100%;}
/* ===== Rail navigation ===== */
.rail{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--rail-w);
  background:var(--ink-900);
  border-right:1px solid var(--line-dark);
  padding:30px 22px 24px;
  display:flex;
  flex-direction:column;
  gap:22px;
  z-index:70;
  overflow-y:auto;
}
.brand{display:block;line-height:1.15;}
.brand-1{display:block;font-size:1.4rem;font-weight:800;letter-spacing:.02em;color:var(--text-inv);}
.brand-2{display:block;font-size:.78rem;font-weight:500;letter-spacing:.26em;color:var(--accent);margin-top:4px;}
.rail-nav{display:flex;flex-direction:column;gap:2px;}
.rail-nav a{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  padding:9px 0 9px 12px;
  font-size:.9rem;
  color:var(--text-inv-2);
  border-radius:0 6px 6px 0;
  transition:color .2s ease,transform .2s ease,background .2s ease;
}
.rail-nav a::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:3px;
  background:transparent;
  border-radius:2px;
  transition:background .2s ease;
}
.rail-nav a .idx{
  font-family:"SFMono-Regular",Consolas,Menlo,monospace;
  font-size:.7rem;
  color:rgba(169,181,175,.65);
  letter-spacing:.04em;
}
.rail-nav a:hover{color:var(--text-inv);transform:translateX(2px);background:rgba(242,245,239,.04);}
.rail-nav a.is-active{color:var(--text-inv);font-weight:600;}
.rail-nav a.is-active::before{background:var(--accent);}
.rail-nav a.is-active .idx{color:var(--accent);}
.rail-divider{height:1px;background:var(--line-dark);}
.rail-search{position:relative;}
.rail-search .fa-magnifying-glass{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  font-size:.8rem;color:var(--text-inv-2);
}
.rail-search input{
  width:100%;
  height:40px;
  padding:0 12px 0 34px;
  border-radius:8px;
  border:1px solid var(--line-dark);
  background:rgba(242,245,239,.05);
  color:var(--text-inv);
  font-size:.85rem;
  transition:border-color .2s ease,background .2s ease;
}
.rail-search input::placeholder{color:rgba(169,181,175,.75);}
.rail-search input:focus{
  outline:none;
  border-color:var(--brand-2);
  background:rgba(242,245,239,.09);
  box-shadow:0 0 0 3px rgba(20,122,115,.22);
}
.rail-cta{width:100%;margin-top:auto;}
.rail-note{font-size:.7rem;color:rgba(169,181,175,.7);line-height:1.6;}
/* ===== Mobile bar & drawer ===== */
.mobile-bar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:60px;
  background:var(--ink-900);
  border-bottom:1px solid var(--line-dark);
  z-index:90;
  align-items:center;
  justify-content:space-between;
  padding:0 20px;
}
.mobile-bar .brand-1{font-size:1.05rem;}
.mobile-bar .brand-2{display:inline;font-size:.7rem;letter-spacing:.18em;margin-left:8px;}
.burger{
  width:42px;height:42px;
  border-radius:8px;
  border:1px solid var(--line-dark);
  background:transparent;
  color:var(--text-inv);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  font-size:1rem;
}
.burger:hover{border-color:rgba(226,104,60,.5);}
.drawer{
  position:fixed;
  inset:0;
  background:var(--ink-900);
  z-index:100;
  padding:26px 24px 32px;
  display:flex;
  flex-direction:column;
  gap:20px;
  transform:translateY(-100%);
  opacity:0;
  visibility:hidden;
  transition:transform .3s ease,opacity .3s ease,visibility .3s;
  overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);opacity:1;visibility:visible;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:42px;height:42px;border-radius:8px;
  border:1px solid var(--line-dark);
  background:transparent;color:var(--text-inv);
  cursor:pointer;font-size:1rem;
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  display:flex;
  align-items:center;
  gap:14px;
  padding:16px 0;
  font-size:1.1rem;
  color:var(--text-inv-2);
  border-bottom:1px solid var(--line-dark);
}
.drawer-nav a .idx{
  font-family:"SFMono-Regular",Consolas,Menlo,monospace;
  font-size:.75rem;color:var(--accent);letter-spacing:.06em;
}
.drawer-nav a.is-active{color:var(--text-inv);font-weight:600;}
.drawer-cta{margin-top:auto;width:100%;}
/* ===== Main ===== */
.main{margin-left:var(--rail-w);}
/* ===== Hero / magazine ===== */
.hero-band{padding:64px 0 80px;}
.hero-head{max-width:860px;margin-bottom:40px;}
.hero-head h1{
  font-size:clamp(2rem,4.2vw,3.5rem);
  line-height:1.15;
  font-weight:800;
  letter-spacing:0;
}
.hero-sub{
  margin-top:18px;
  max-width:660px;
  color:var(--text-2);
  font-size:1.0625rem;
  line-height:1.85;
}
.mag-grid{margin-top:8px;}
.feature-frame{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  min-height:470px;
  background:var(--ink-800);
  display:flex;
  align-items:flex-end;
}
.feature-frame img{
  position:absolute;
  inset:0;
  width:100%;height:100%;
  object-fit:cover;
  object-position:center;
}
.feature-mask{
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(10,15,14,.35) 0%,rgba(10,15,14,.62) 46%,rgba(10,15,14,.9) 100%);
}
.feature-body{
  position:relative;
  padding:34px 34px 30px;
  color:var(--text-inv);
}
.feature-body h2{
  font-size:clamp(1.4rem,2.4vw,1.9rem);
  line-height:1.3;
  font-weight:700;
  margin-top:14px;
}
.feature-body p{
  margin-top:12px;
  max-width:520px;
  color:var(--text-inv-2);
  font-size:.95rem;
  line-height:1.8;
}
.feature-actions{margin-top:22px;display:flex;flex-wrap:wrap;gap:12px;}
.feature-play{
  position:absolute;
  top:24px;right:24px;
  width:52px;height:52px;
  border-radius:50%;
  border:1px solid rgba(242,245,239,.35);
  background:rgba(10,15,14,.35);
  color:var(--text-inv);
  display:flex;align-items:center;justify-content:center;
  font-size:.95rem;
  transition:border-color .25s ease,background .25s ease;
}
.quick-panel{
  height:100%;
  border:1px solid var(--line-light);
  border-radius:var(--r-card);
  background:#fff;
  box-shadow:var(--sh-light);
  padding:26px 24px;
  display:flex;
  flex-direction:column;
}
.quick-title{
  font-size:.8125rem;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--text-2);
  padding-bottom:14px;
  border-bottom:1px solid var(--line-light);
}
.quick-list{margin-top:6px;flex:1;}
.quick-list li{
  border-bottom:1px solid var(--line-light);
}
.quick-list li:last-child{border-bottom:0;}
.quick-list a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:13px 0;
  font-size:.9375rem;
  color:var(--text-1);
  transition:color .2s ease,transform .2s ease;
}
.quick-list a:hover{color:var(--brand);transform:translateX(2px);}
.quick-list .num{
  font-family:"SFMono-Regular",Consolas,Menlo,monospace;
  font-size:.75rem;
  color:var(--accent);
  letter-spacing:.04em;
  flex:none;
}
.quick-list .mini{
  margin-left:auto;
  font-size:.7rem;
  color:var(--text-2);
  border:1px solid var(--line-light);
  border-radius:8px;
  padding:1px 7px;
  flex:none;
}
.quick-panel .link-more{margin-top:16px;}
/* ===== Stats ===== */
.stats-band{padding:0 0 8px;}
.stats-row{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line-light);
  border-bottom:1px solid var(--line-light);
}
.stat{
  padding:28px 26px 26px;
  border-left:1px solid var(--line-light);
}
.stat:first-child{border-left:0;padding-left:0;}
.stat b{
  display:block;
  font-family:"SFMono-Regular",Consolas,Menlo,monospace;
  font-size:1.75rem;
  font-weight:500;
  color:var(--brand);
  line-height:1.2;
}
.stat span{display:block;margin-top:6px;font-size:.875rem;color:var(--text-2);}
/* ===== Feature cards ===== */
.duo-grid{margin-top:8px;}
.duo-card{
  height:100%;
  background:#fff;
  border:1px solid var(--line-light);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-light);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  display:flex;
  flex-direction:column;
}
.duo-card:hover{transform:translateY(-4px);border-color:rgba(226,104,60,.45);box-shadow:0 14px 30px rgba(10,15,14,.1);}
.duo-media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink-800);}
.duo-media img{width:100%;height:100%;object-fit:cover;object-position:center;transition:transform .4s ease;}
.duo-card:hover .duo-media img{transform:scale(1.03);}
.duo-body{padding:24px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.duo-body h3{font-size:1.25rem;font-weight:600;line-height:1.4;}
.duo-body p{color:var(--text-2);font-size:.9375rem;line-height:1.8;}
.duo-body .link-more{margin-top:auto;padding-top:6px;}
/* ===== Steps ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:8px;}
.step{
  position:relative;
  padding:28px 24px 26px;
  border-radius:var(--r-card);
  border:1px solid var(--line-dark);
  background:var(--ink-800);
  transition:border-color .25s ease,transform .25s ease;
}
.step:hover{border-color:rgba(226,104,60,.45);transform:translateY(-4px);}
.step .step-no{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:"SFMono-Regular",Consolas,Menlo,monospace;
  font-size:.75rem;
  color:var(--accent);
  letter-spacing:.08em;
}
.step .step-no::after{content:"";width:22px;height:1px;background:rgba(226,104,60,.6);}
.step h3{margin-top:14px;font-size:1.1875rem;font-weight:600;color:var(--text-inv);line-height:1.45;}
.step p{margin-top:10px;font-size:.9375rem;color:var(--text-inv-2);line-height:1.8;}
.step-bar{
  display:flex;
  gap:6px;
  margin-bottom:32px;
}
.step-bar span{height:3px;flex:1;border-radius:2px;background:rgba(242,245,239,.14);}
.step-bar span.on{background:var(--brand-2);}
/* ===== FAQ ===== */
.faq-wrap{max-width:900px;}
.faq-item{border-bottom:1px solid var(--line-light);}
.faq-item:first-of-type{border-top:1px solid var(--line-light);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:64px;
  padding:16px 0;
  font-size:1.0625rem;
  font-weight:600;
  color:var(--text-1);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-ico{position:relative;width:16px;height:16px;flex:none;}
.faq-ico::before,.faq-ico::after{
  content:"";
  position:absolute;
  background:var(--brand);
  transition:transform .22s ease,opacity .22s ease;
}
.faq-ico::before{left:0;top:7px;width:16px;height:2px;border-radius:1px;}
.faq-ico::after{left:7px;top:0;width:2px;height:16px;border-radius:1px;}
.faq-item[open] .faq-ico::after{transform:rotate(90deg);opacity:0;}
.faq-answer{
  max-width:820px;
  padding:0 0 22px;
  color:var(--text-2);
  font-size:.9688rem;
  line-height:1.9;
}
/* ===== Text index ===== */
.text-index{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:0 40px;
  margin-top:8px;
}
.text-index a{
  display:flex;
  align-items:center;
  gap:12px;
  padding:15px 0;
  border-bottom:1px solid var(--line-light);
  color:var(--text-1);
  font-size:.9688rem;
  transition:color .2s ease,padding-left .2s ease;
}
.text-index a:hover{color:var(--brand);padding-left:4px;}
.text-index .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--accent);
  flex:none;
}
.text-index .meta{margin-left:auto;font-size:.75rem;color:var(--text-2);flex:none;}
/* ===== CTA band ===== */
.cta-band{
  position:relative;
  background:var(--ink-900);
  color:var(--text-inv);
  overflow:hidden;
  padding:0;
}
.cta-band .cta-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  opacity:.28;
}
.cta-band .cta-shade{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(10,15,14,.94) 0%,rgba(10,15,14,.78) 55%,rgba(10,15,14,.6) 100%);
}
.cta-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:72px 0;
}
.cta-inner h2{font-size:clamp(1.5rem,2.6vw,2.125rem);line-height:1.3;font-weight:700;}
.cta-inner p{margin-top:12px;color:var(--text-inv-2);max-width:560px;font-size:.9688rem;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex:none;}
/* ===== Footer ===== */
.site-footer{
  background:var(--ink-900);
  color:var(--text-inv-2);
  border-top:1px solid var(--line-dark);
  padding-top:64px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:48px;
}
.site-footer .brand-1{font-size:1.25rem;}
.site-footer .brand-2{font-size:.72rem;letter-spacing:.24em;}
.footer-note{margin-top:14px;font-size:.875rem;line-height:1.8;color:var(--text-inv-2);max-width:240px;}
.footer-col h4{
  font-size:.8125rem;
  font-weight:600;
  letter-spacing:.12em;
  color:var(--text-inv);
  margin-bottom:16px;
}
.footer-col a{
  display:block;
  padding:7px 0;
  font-size:.9rem;
  color:var(--text-inv-2);
  transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:var(--text-inv);transform:translateX(2px);}
.footer-col .plain{font-size:.875rem;line-height:1.8;padding:4px 0;color:var(--text-inv-2);}
.sub-form{display:flex;gap:8px;margin-bottom:10px;}
.sub-form input{
  flex:1;
  min-width:0;
  height:44px;
  padding:0 12px;
  border-radius:8px;
  border:1px solid var(--line-dark);
  background:rgba(242,245,239,.06);
  color:var(--text-inv);
  font-size:.875rem;
}
.sub-form input::placeholder{color:rgba(169,181,175,.8);}
.sub-form input:focus{outline:none;border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(20,122,115,.22);}
.sub-form button{
  height:44px;
  padding:0 18px;
  border:0;
  border-radius:8px;
  background:var(--brand);
  color:#fff;
  font-size:.875rem;
  font-weight:600;
  cursor:pointer;
  transition:background .2s ease;
  flex:none;
}
.sub-form button:hover{background:var(--brand-2);}
.sub-hint{font-size:.78rem;line-height:1.7;color:rgba(169,181,175,.8);}
.footer-bottom{
  border-top:1px solid var(--line-dark);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:22px 0 26px;
  font-size:.8125rem;
  color:rgba(169,181,175,.85);
}
.to-top{color:var(--text-inv-2);}
.to-top:hover{color:var(--text-inv);}
/* ===== Floating CTA ===== */
.floating-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:85;
  display:flex;
  align-items:center;
  gap:18px;
  height:64px;
  padding:0 14px 0 22px;
  background:var(--ink-900);
  border:1px solid var(--line-dark);
  border-radius:10px;
  box-shadow:0 14px 34px rgba(10,15,14,.3);
  opacity:0;
  transform:translateY(14px);
  pointer-events:none;
  transition:opacity .3s ease,transform .3s ease;
}
.floating-cta.is-on{opacity:1;transform:translateY(0);pointer-events:auto;}
.floating-cta .fc-text{font-size:.875rem;color:var(--text-inv-2);}
.floating-cta .fc-text b{color:var(--text-inv);font-weight:600;}
.floating-cta .btn{height:40px;padding:0 16px;font-size:.85rem;}
/* ===== Reveal ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease;}
.reveal.is-in{opacity:1;transform:none;}
/* ===== Responsive ===== */
@media (max-width:1279px){
  :root{--rail-w:200px;}
  .container{padding:0 32px;}
  .section{padding:80px 0;}
}
@media (max-width:1023px){
  .rail{display:none;}
  .mobile-bar{display:flex;}
  .main{margin-left:0;padding-top:60px;}
  .hero-band{padding:40px 0 56px;}
  .feature-frame{min-height:400px;margin-bottom:24px;}
  .quick-panel{margin-top:4px;}
  .stats-row{grid-template-columns:1fr;border-bottom:0;}
  .stat{border-left:0;border-bottom:1px solid var(--line-light);padding:20px 0;}
  .step{background:var(--ink-800);}
  .steps{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:56px 0;}
  .floating-cta{
    left:0;right:0;bottom:0;
    border-radius:0;
    height:56px;
    padding:0 16px env(safe-area-inset-bottom);
    justify-content:space-between;
    border-left:0;border-right:0;border-bottom:0;
  }
  .floating-cta .btn{height:38px;}
  .main{padding-bottom:56px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .hero-head h1{font-size:1.85rem;}
  .feature-frame{min-height:360px;}
  .feature-body{padding:26px 22px 24px;}
  .text-index{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1;}
  .faq-item summary{font-size:1rem;}
  .duo-body h3{font-size:1.125rem;}
  .step{padding:24px 20px;}
  .sub-form{flex-direction:column;}
  .sub-form button{width:100%;}
}
@media (max-width:519px){
  .hero-head h1{font-size:1.6rem;}
  .feature-frame{min-height:320px;}
  .stat b{font-size:1.5rem;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  .floating-cta{transform:none;}
}

/* roulang page: category6 */
:root{
  --ink-900:#0A0F0E;
  --ink-800:#111917;
  --ink-700:#1B2623;
  --paper:#F4F2EA;
  --paper-2:#EAE7DC;
  --text-1:#14201D;
  --text-2:#5A6662;
  --text-inv:#F2F5EF;
  --text-inv-2:#A9B5AF;
  --brand:#0E5B57;
  --brand-2:#147A73;
  --accent:#E2683C;
  --line-dark:rgba(242,245,239,0.12);
  --line-light:#D9D5C8;
  --ok:#2F7D5B;
  --r-card:10px;
  --r-btn:8px;
  --shadow-soft:0 8px 24px rgba(10,15,14,0.06);
  --rail-w:232px;
  --gap-sec:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text-1);
  font-family:"HarmonyOS Sans SC","PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand);text-decoration:none;background:none;}
a:hover{color:var(--brand-2);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ---------- 左侧竖向导航 ---------- */
.rail{
  position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);
  background:var(--ink-900);
  border-right:1px solid var(--line-dark);
  overflow-y:auto;
  z-index:100;
  padding:32px 22px 24px;
}
.rail::-webkit-scrollbar{width:4px;}
.rail::-webkit-scrollbar-thumb{background:rgba(242,245,239,.16);border-radius:2px;}
.brand{display:inline-block;line-height:1.1;margin-bottom:30px;}
.brand-1{
  display:block;color:var(--text-inv);font-size:1.32rem;font-weight:800;letter-spacing:.04em;
}
.brand-2{
  display:block;color:var(--text-inv-2);font-size:.78rem;font-weight:500;letter-spacing:.42em;margin-top:6px;
}
.rail-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:26px;}
.rail-nav a{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:10px 10px 10px 12px;border-radius:6px;
  color:var(--text-inv-2);font-size:.94rem;font-weight:500;
  transition:color .2s ease,background .2s ease,transform .2s ease;
}
.rail-nav a .idx{
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  font-size:.7rem;color:rgba(169,181,175,.6);letter-spacing:.06em;min-width:18px;
}
.rail-nav a::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:0;background:var(--accent);border-radius:2px;transition:height .2s ease;
}
.rail-nav a:hover{color:var(--text-inv);background:rgba(242,245,239,.05);transform:translateX(2px);}
.rail-nav a.is-active{color:var(--text-inv);background:rgba(242,245,239,.06);font-weight:600;}
.rail-nav a.is-active::before{height:22px;}
.rail-nav a.is-active .idx{color:var(--accent);}
.rail-divider{height:1px;background:var(--line-dark);margin:0 0 22px;}
.rail-search{position:relative;margin-bottom:18px;}
.rail-search i{
  position:absolute;left:12px;top:50%;transform:translateY(-50%);
  font-size:.78rem;color:var(--text-inv-2);
}
.rail-search input{
  width:100%;height:40px;padding:0 12px 0 34px;
  background:rgba(242,245,239,.05);
  border:1px solid var(--line-dark);border-radius:var(--r-btn);
  color:var(--text-inv);font-size:.85rem;margin:0;
  transition:border-color .2s ease,background .2s ease;
}
.rail-search input::placeholder{color:rgba(169,181,175,.72);}
.rail-search input:focus{
  outline:none;border-color:var(--brand-2);background:rgba(242,245,239,.09);
  box-shadow:0 0 0 3px rgba(20,122,115,.28);
}
.rail-cta{width:100%;justify-content:space-between;font-size:.9rem;}
.rail-copy{
  margin-top:20px;font-size:.7rem;line-height:1.7;color:rgba(169,181,175,.6);letter-spacing:.02em;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:.95rem;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;text-align:center;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  margin:0;
}
.btn .arr{display:inline-block;transition:transform .2s ease;font-weight:700;}
.btn:hover .arr{transform:translateX(3px);}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand);}
.btn-primary:hover{background:var(--brand-2);border-color:var(--brand-2);color:#fff;}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--text-inv);border-color:var(--line-dark);}
.btn-ghost:hover{background:rgba(242,245,239,.1);color:var(--text-inv);border-color:rgba(242,245,239,.28);}
.btn-outline{background:transparent;color:var(--text-1);border-color:var(--line-light);}
.btn-outline:hover{background:rgba(20,32,29,.06);color:var(--text-1);border-color:var(--text-2);}
.btn-white{background:var(--paper);color:var(--ink-900);border-color:var(--paper);}
.btn-white:hover{background:#fff;color:var(--ink-900);transform:translateY(-1px);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:.9rem;font-weight:600;
  color:var(--brand);border-bottom:1px solid transparent;transition:border-color .2s ease,color .2s ease;
}
.link-arrow:hover{border-bottom-color:var(--brand);}
.link-arrow i{transition:transform .2s ease;font-size:.78rem;}
.link-arrow:hover i{transform:translateX(3px);}

/* ---------- 主区域 ---------- */
.main-area{margin-left:var(--rail-w);min-height:100vh;display:flex;flex-direction:column;}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 48px;}
.section{padding:var(--gap-sec) 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:820px;margin-bottom:32px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:.75rem;font-weight:600;letter-spacing:.16em;text-transform:uppercase;
  color:var(--text-2);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);}
.section-title{font-size:clamp(1.5rem,2.6vw,2.125rem);font-weight:700;line-height:1.25;letter-spacing:-.01em;}
.section-sub{margin-top:12px;color:var(--text-2);font-size:.98rem;line-height:1.85;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:8px;border:1px solid var(--line-light);
  font-size:.76rem;font-weight:500;color:var(--text-2);background:transparent;
}
.badge-dark{border-color:var(--line-dark);color:var(--text-inv-2);}
.badge-accent{border-color:rgba(226,104,60,.5);color:var(--accent);}

/* ---------- Hero ---------- */
.cat-hero{
  position:relative;background-color:var(--ink-900);
  background-image:linear-gradient(180deg,rgba(10,15,14,.55),rgba(10,15,14,.88)),url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  color:var(--text-inv);padding:88px 0 0;
}
.cat-hero .container{position:relative;z-index:2;}
.cat-hero .eyebrow{color:var(--text-inv-2);}
.cat-hero h1{
  font-size:clamp(2rem,4.2vw,3.5rem);font-weight:800;line-height:1.15;letter-spacing:0;
  max-width:900px;margin:0 0 18px;
}
.cat-hero .lede{
  max-width:720px;color:var(--text-inv-2);font-size:1.03rem;line-height:1.9;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.stat-strip{
  display:grid;grid-template-columns:repeat(3,1fr);
  margin-top:56px;border-top:1px solid var(--line-dark);
}
.stat-strip .stat{
  padding:26px 24px 30px 0;border-right:1px solid var(--line-dark);
}
.stat-strip .stat:last-child{border-right:0;}
.stat-num{
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  font-size:1.85rem;font-weight:500;color:var(--text-inv);line-height:1.2;letter-spacing:-.02em;
}
.stat-num em{font-style:normal;font-size:.86rem;color:var(--text-inv-2);margin-left:6px;letter-spacing:.04em;}
.stat-label{margin-top:6px;font-size:.82rem;color:var(--text-inv-2);}

/* ---------- 更新要点 ---------- */
.plain-block{background:var(--paper);}
.point-list{border-top:1px solid var(--line-light);}
.point-list li{
  display:grid;grid-template-columns:64px 1fr auto;gap:22px;align-items:start;
  padding:24px 0;border-bottom:1px solid var(--line-light);
}
.point-list .num{
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  font-size:.82rem;font-weight:500;color:var(--accent);letter-spacing:.08em;padding-top:4px;
}
.point-list h3{font-size:1.09rem;font-weight:600;margin-bottom:6px;}
.point-list p{color:var(--text-2);font-size:.94rem;line-height:1.85;}
.point-list .tag{
  align-self:center;font-size:.75rem;color:var(--text-2);
  border:1px solid var(--line-light);border-radius:8px;padding:3px 10px;white-space:nowrap;
}

/* ---------- FAQ ---------- */
.faq-section{background:var(--paper-2);}
.faq-wrap{max-width:860px;}
.faq-item{border-bottom:1px solid var(--line-light);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:14px 0;cursor:pointer;list-style:none;
  font-size:1.02rem;font-weight:600;color:var(--text-1);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary .mark{
  flex:0 0 auto;width:24px;height:24px;display:grid;place-items:center;
  border:1px solid var(--line-light);border-radius:6px;color:var(--text-2);
  font-size:.85rem;font-weight:500;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.faq-item summary .mark::before{content:"+";}
.faq-item[open] summary .mark::before{content:"–";}
.faq-item[open] summary .mark{background:var(--brand);border-color:var(--brand);color:#fff;}
.faq-answer{
  max-width:820px;padding:0 0 24px;
  color:var(--text-2);font-size:.96rem;line-height:1.9;
}
.faq-answer strong{color:var(--text-1);font-weight:600;}

/* ---------- 相关条目 ---------- */
.gloss-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  column-gap:56px;border-top:1px solid var(--line-light);
}
.gloss-item{
  display:flex;align-items:center;gap:14px;
  padding:18px 0;border-bottom:1px solid var(--line-light);
  transition:background .2s ease,padding .2s ease;
}
.gloss-item:hover{background:rgba(20,32,29,.035);padding-left:8px;}
.gloss-item .g-num{
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  font-size:.76rem;color:var(--accent);min-width:26px;letter-spacing:.06em;
}
.gloss-item .g-title{font-size:.98rem;font-weight:500;color:var(--text-1);flex:1;}
.gloss-item .g-meta{font-size:.78rem;color:var(--text-2);white-space:nowrap;}
.gloss-item:hover .g-title{color:var(--brand);}

/* ---------- 三步核对 ---------- */
.check-grid{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;align-items:center;
}
.check-figure{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  border:1px solid var(--line-light);box-shadow:var(--shadow-soft);
  background:var(--ink-800);aspect-ratio:4/3;
}
.check-figure img{width:100%;height:100%;object-fit:cover;object-position:center;}
.check-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;
  background:linear-gradient(180deg,rgba(10,15,14,0),rgba(10,15,14,.86));
  color:var(--text-inv);font-size:.82rem;
}
.step-list{counter-reset:step;margin-top:8px;}
.step-list li{
  position:relative;padding:0 0 22px 44px;border-left:1px solid var(--line-light);margin-left:14px;
}
.step-list li:last-child{border-left-color:transparent;padding-bottom:0;}
.step-list li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:-15px;top:0;width:30px;height:30px;
  display:grid;place-items:center;border-radius:50%;
  background:var(--paper);border:1px solid var(--line-light);
  font-family:"SFMono-Regular",Consolas,monospace;font-size:.72rem;color:var(--brand);font-weight:600;
}
.step-list h3{font-size:1.02rem;font-weight:600;margin-bottom:4px;}
.step-list p{color:var(--text-2);font-size:.93rem;line-height:1.85;}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;background-color:var(--ink-900);
  background-image:linear-gradient(180deg,rgba(10,15,14,.82),rgba(10,15,14,.94)),url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
  color:var(--text-inv);padding:64px 0;
}
.cta-band .inner{
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(1.35rem,2.3vw,1.85rem);font-weight:700;line-height:1.3;}
.cta-band p{margin-top:10px;color:var(--text-inv-2);font-size:.94rem;max-width:600px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-900);color:var(--text-inv-2);
  border-top:1px solid var(--line-dark);padding:64px 0 0;margin-top:auto;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:48px;
}
.footer-col h4{
  font-size:.82rem;font-weight:600;letter-spacing:.14em;color:var(--text-inv);
  margin-bottom:16px;
}
.footer-col a{
  display:block;font-size:.9rem;color:var(--text-inv-2);padding:5px 0;
  transition:color .2s ease,transform .2s ease;
}
.footer-col a:hover{color:var(--text-inv);transform:translateX(2px);}
.footer-brand .brand{margin-bottom:14px;}
.footer-note{font-size:.86rem;color:var(--text-inv-2);line-height:1.8;max-width:240px;}
.footer-col .plain{font-size:.86rem;color:var(--text-inv-2);line-height:1.9;}
.sub-form{display:flex;gap:8px;margin:0;}
.sub-form input{
  flex:1;min-width:0;height:44px;padding:0 14px;margin:0;
  background:rgba(242,245,239,.05);border:1px solid var(--line-dark);
  border-radius:var(--r-btn);color:var(--text-inv);font-size:.88rem;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.sub-form input::placeholder{color:rgba(169,181,175,.7);}
.sub-form input:focus{
  outline:none;border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(20,122,115,.3);
}
.sub-form button{
  height:44px;padding:0 20px;border-radius:var(--r-btn);border:1px solid var(--brand);
  background:var(--brand);color:#fff;font-size:.88rem;font-weight:600;cursor:pointer;
  transition:background .2s ease,border-color .2s ease;
}
.sub-form button:hover{background:var(--brand-2);border-color:var(--brand-2);}
.sub-hint{margin-top:12px;font-size:.76rem;color:rgba(169,181,175,.7);line-height:1.75;}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  border-top:1px solid var(--line-dark);padding:22px 0 26px;
  font-size:.78rem;color:rgba(169,181,175,.72);
}
.to-top{color:var(--text-inv-2);font-size:.8rem;transition:color .2s ease;}
.to-top:hover{color:var(--text-inv);}

/* ---------- 移动顶栏与抽屉 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:120;
  background:var(--ink-900);border-bottom:1px solid var(--line-dark);
  align-items:center;justify-content:space-between;padding:0 20px;
}
.topbar .brand{margin:0;}
.topbar .brand-1{font-size:1rem;}
.topbar .brand-2{font-size:.6rem;letter-spacing:.3em;margin-top:3px;}
.burger{
  width:40px;height:40px;display:grid;place-items:center;
  background:transparent;border:1px solid var(--line-dark);border-radius:8px;
  color:var(--text-inv);font-size:1rem;cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.burger:hover{background:rgba(242,245,239,.08);border-color:rgba(242,245,239,.28);}
.drawer{
  position:fixed;inset:0;z-index:200;background:var(--ink-900);
  padding:24px 22px 28px;display:flex;flex-direction:column;
  transform:translateX(-100%);transition:transform .3s ease;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-top{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:28px;}
.drawer-top .brand{margin:0;}
.drawer-close{
  width:40px;height:40px;display:grid;place-items:center;
  background:transparent;border:1px solid var(--line-dark);border-radius:8px;
  color:var(--text-inv);font-size:1rem;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:24px;}
.drawer-nav a{
  display:flex;align-items:baseline;gap:14px;padding:14px 4px;
  border-bottom:1px solid var(--line-dark);
  color:var(--text-inv-2);font-size:1.15rem;font-weight:600;
  transition:color .2s ease;
}
.drawer-nav a .idx{
  font-family:"SFMono-Regular",Consolas,monospace;font-size:.72rem;color:var(--accent);letter-spacing:.08em;
}
.drawer-nav a.is-active{color:var(--text-inv);}
.drawer-cta{margin-top:auto;padding-top:20px;}
.drawer-cta .btn{width:100%;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(10,15,14,.6);z-index:190;
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ---------- 固定转化条 ---------- */
.floating-cta{
  position:fixed;right:28px;bottom:28px;z-index:150;
  display:flex;align-items:center;gap:20px;
  height:64px;padding:0 12px 0 22px;border-radius:var(--r-card);
  background:var(--ink-900);border:1px solid var(--line-dark);
  box-shadow:0 10px 30px rgba(10,15,14,.28);
  color:var(--text-inv);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease;
}
.floating-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.floating-cta p{font-size:.88rem;color:var(--text-inv-2);margin:0;white-space:nowrap;}
.floating-cta .btn{height:44px;padding:0 18px;font-size:.86rem;}

/* ---------- 滚动进入 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s ease,transform .6s ease;}
.reveal.is-in{opacity:1;transform:translateY(0);}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  :root{--rail-w:200px;--gap-sec:80px;}
  .container{padding:0 32px;}
}
@media (max-width:1023px){
  :root{--gap-sec:72px;}
  .rail{display:none;}
  .main-area{margin-left:0;padding-top:60px;}
  .topbar{display:flex;}
  .container{padding:0 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .check-grid{grid-template-columns:1fr;gap:32px;}
  .gloss-grid{column-gap:32px;}
  .cat-hero{padding-top:64px;}
  .floating-cta{display:none;}
}
@media (max-width:767px){
  :root{--gap-sec:48px;}
  .container{padding:0 20px;}
  body{font-size:15.5px;}
  .cat-hero h1{font-size:clamp(1.75rem,7vw,2.3rem);}
  .stat-strip{grid-template-columns:1fr;margin-top:36px;}
  .stat-strip .stat{border-right:0;border-bottom:1px solid var(--line-dark);padding:18px 0;}
  .stat-strip .stat:last-child{border-bottom:0;}
  .point-list li{grid-template-columns:1fr;gap:8px;padding:20px 0;}
  .point-list .num{padding-top:0;}
  .point-list .tag{justify-self:start;}
  .gloss-grid{grid-template-columns:1fr;column-gap:0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-band .inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .faq-item summary{font-size:.98rem;gap:12px;}
  .hero-actions{width:100%;}
  .hero-actions .btn{width:100%;}
  .floating-cta{display:flex;right:0;left:0;bottom:0;border-radius:0;height:56px;padding:0 14px;justify-content:space-between;gap:12px;box-shadow:0 -6px 20px rgba(10,15,14,.24);}
  .floating-cta p{white-space:normal;font-size:.8rem;}
  .floating-cta .btn{height:40px;padding:0 14px;font-size:.8rem;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}