/* roulang page: index */
:root{
  --bg:#F7F5F0;
  --bg-alt:#FFFFFF;
  --ink:#121416;
  --ink-soft:#5C6259;
  --line:#E3DFD4;
  --accent:#C8F135;
  --accent-ink:#0F1A00;
  --dark:#0D0F0E;
  --dark-soft:#1A1D1B;
  --state-error:#C8402F;
  --state-ok:#2F7D4F;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(18,20,22,.04);
  --shadow-2:0 8px 24px rgba(18,20,22,.08);
  --container:1200px;
  --nav-h:76px;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --font-num:"Inter","SFMono-Regular",ui-monospace,"Menlo",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;background:none;border:none;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
::selection{background:var(--accent);color:var(--accent-ink);}

/* ============ 容器与区块 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
@media (min-width:1440px){:root{--container:1280px;}}
.section{padding:110px 0;}
.section--tight{padding-top:72px;}
.section--dark{background:var(--dark);color:#EDEFEA;}
.section--alt{background:var(--bg-alt);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:56px;}
.sec-num{font-family:var(--font-num);font-size:13px;letter-spacing:.12em;color:var(--ink-soft);display:block;margin-bottom:12px;}
.sec-title{font-size:clamp(28px,3.4vw,46px);font-weight:700;line-height:1.15;letter-spacing:-.01em;}
.sec-line{width:64px;height:3px;background:var(--accent);margin-top:18px;border-radius:2px;}
.sec-desc{max-width:560px;color:var(--ink-soft);font-size:16px;margin-top:16px;}
.section--dark .sec-title,.section--dark h2,.section--dark h3{color:#fff;}
.section--dark .sec-num,.section--dark .sec-desc{color:#9AA096;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.btn--primary{background:var(--accent);color:var(--accent-ink);box-shadow:var(--shadow-1);}
.btn--primary:hover{background:#BCE424;box-shadow:var(--shadow-2);transform:translateY(-2px);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{border:1px solid rgba(18,20,22,.28);color:var(--ink);background:transparent;}
.btn--ghost:hover{border-color:var(--ink);background:rgba(18,20,22,.04);transform:translateY(-2px);}
.btn--dark{background:var(--dark);color:#fff;}
.btn--dark:hover{background:#232725;box-shadow:var(--shadow-2);transform:translateY(-2px);}
.btn--sm{height:38px;padding:0 18px;font-size:14px;}
.btn--xs{height:32px;padding:0 14px;font-size:13px;}
.btn--block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}
.link-text{
  display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;
  color:var(--ink);position:relative;padding-bottom:2px;
}
.link-text::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:100%;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.link-text:hover::after{transform:scaleX(1);}

/* ============ 标签 ============ */
.tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--radius-pill);
  font-size:13px;font-weight:600;line-height:1;letter-spacing:.01em;
  background:rgba(200,241,53,.24);color:#33430A;border:1px solid rgba(200,241,53,.6);
}
.tag--outline{background:transparent;border:1px solid var(--line);color:var(--ink-soft);}
.tag--dark{background:rgba(200,241,53,.14);border-color:rgba(200,241,53,.35);color:var(--accent);}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(247,245,240,.62);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(18,20,22,.08);
  box-shadow:0 2px 12px rgba(18,20,22,.05);
  transition:background-color .24s ease,box-shadow .24s ease,height .24s ease;
}
.site-header.is-scrolled{background:rgba(247,245,240,.94);box-shadow:0 6px 22px rgba(18,20,22,.09);}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:var(--nav-h);transition:height .24s ease;
}
.site-header.is-scrolled .nav-inner{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.01em;}
.brand-dot{width:9px;height:9px;border-radius:2px;background:var(--accent);flex:none;}
.brand span{white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 12px;
  font-size:14.5px;color:var(--ink-soft);font-weight:500;border-radius:8px;
  transition:color .18s ease,background-color .18s ease;
}
.nav-links a:hover{color:var(--ink);background:rgba(18,20,22,.04);}
.nav-links a.is-active{color:var(--ink);font-weight:700;}
.nav-links a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;background:var(--accent);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:10px;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(18,20,22,.14);color:var(--ink);transition:background-color .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:rgba(18,20,22,.05);border-color:rgba(18,20,22,.3);}
.burger{display:none;width:40px;height:40px;border-radius:10px;border:1px solid rgba(18,20,22,.14);align-items:center;justify-content:center;}
.burger i{display:block;width:18px;height:2px;background:var(--ink);position:relative;}
.burger i::before,.burger i::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);transition:transform .2s ease,top .2s ease;}
.burger i::before{top:-6px;}
.burger i::after{top:6px;}
.nav-drawer{display:none;}

/* ============ Hero ============ */
.hero{
  position:relative;min-height:88vh;display:flex;align-items:flex-end;
  padding:calc(var(--nav-h) + 60px) 0 56px;overflow:hidden;
}
.hero-bg{position:absolute;inset:0;z-index:0;}
.hero-bg img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(13,15,14,.88) 0%,rgba(13,15,14,.72) 32%,rgba(13,15,14,.30) 62%,rgba(13,15,14,.10) 100%);
}
.hero-inner{position:relative;z-index:1;width:100%;color:#fff;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;
  color:#DDE3D6;border:1px solid rgba(255,255,255,.28);border-radius:var(--radius-pill);
  padding:6px 14px;margin-bottom:24px;background:rgba(255,255,255,.06);
}
.hero h1{
  font-size:clamp(40px,6.4vw,92px);font-weight:800;line-height:1.04;letter-spacing:-.02em;
  max-width:16em;color:#fff;
}
.hero h1 em{font-style:normal;color:var(--accent);}
.hero-sub{max-width:620px;margin-top:24px;font-size:17px;line-height:1.85;color:#D8DCD3;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px;}
.hero-cta .btn--ghost{border-color:rgba(255,255,255,.42);color:#fff;}
.hero-cta .btn--ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;
  margin-top:56px;border-top:1px solid rgba(255,255,255,.24);
}
.hero-stats .stat{padding:22px 20px 0;border-left:1px solid rgba(255,255,255,.16);}
.hero-stats .stat:first-child{border-left:none;padding-left:0;}
.stat-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:32px;font-weight:700;color:var(--accent);line-height:1.1;}
.stat-label{font-size:12.5px;color:#B9BFB4;margin-top:6px;letter-spacing:.04em;}
.scroll-down{
  position:absolute;right:24px;bottom:30px;z-index:2;
  width:46px;height:46px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(255,255,255,.36);color:#fff;background:rgba(13,15,14,.28);
  animation:floaty 2.6s ease-in-out infinite;
}
.scroll-down:hover{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);}
@keyframes floaty{0%,100%{transform:translateY(0);}50%{transform:translateY(7px);}}

/* ============ 卖点 ============ */
.feature-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
.feature-aside p{color:var(--ink-soft);margin-top:18px;font-size:16px;}
.feature-list{border-top:1px solid var(--line);}
.feature-item{
  display:grid;grid-template-columns:96px 1fr;gap:24px;align-items:baseline;
  padding:26px 0;border-bottom:1px solid var(--line);
}
.feature-item .num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:24px;font-weight:700;color:var(--ink-soft);}
.feature-item h3{font-size:22px;font-weight:600;line-height:1.4;}
.feature-item p{color:var(--ink-soft);font-size:15.5px;margin-top:6px;}

/* ============ 演示 ============ */
.demo-layout{display:grid;grid-template-columns:1fr 380px;gap:48px;align-items:start;}
.demo-media{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);background:var(--bg-alt);box-shadow:var(--shadow-1);}
.demo-media img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:opacity .28s ease;}
.demo-media.is-switching img{opacity:.25;}
.demo-caption{padding:16px 20px;font-size:14px;color:var(--ink-soft);border-top:1px solid var(--line);background:var(--bg-alt);}
.demo-tabs{display:flex;flex-direction:column;gap:8px;}
.demo-tab{
  text-align:left;padding:18px 20px;border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--bg-alt);transition:border-color .2s ease,background-color .2s ease,transform .2s ease;
}
.demo-tab:hover{transform:translateY(-2px);box-shadow:var(--shadow-1);}
.demo-tab strong{display:block;font-size:16px;font-weight:600;}
.demo-tab span{display:block;font-size:13.5px;color:var(--ink-soft);margin-top:4px;line-height:1.6;}
.demo-tab.is-active{border-color:var(--ink);background:#fff;box-shadow:var(--shadow-2);}
.demo-tab.is-active strong{color:var(--ink);}
.demo-steps{display:flex;align-items:stretch;gap:16px;margin-top:48px;}
.step{flex:1;padding:24px;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--bg-alt);}
.step .num{font-family:var(--font-num);font-size:13px;letter-spacing:.12em;color:var(--ink-soft);}
.step h4{font-size:18px;font-weight:600;margin-top:10px;}
.step p{font-size:14.5px;color:var(--ink-soft);margin-top:6px;}
.step-arrow{display:flex;align-items:center;color:var(--line);font-size:20px;}

/* ============ 证据 ============ */
.case-grid{display:grid;gap:24px;}
.case-card{
  display:grid;grid-template-columns:320px 1fr;gap:28px;align-items:center;
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:20px;transition:transform .2s ease,box-shadow .2s ease;
}
.case-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.case-card img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.case-card h3{font-size:22px;font-weight:600;margin-bottom:10px;}
.case-card p{color:var(--ink-soft);font-size:15.5px;}
.case-meta{display:flex;gap:10px;margin-bottom:14px;flex-wrap:wrap;}
.quote-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:56px;}
.quote{padding:26px;border-top:2px solid var(--ink);background:transparent;}
.quote p{font-size:16px;line-height:1.85;}
.quote footer{margin-top:16px;font-size:13px;color:var(--ink-soft);}
.data-band{
  margin-top:56px;background:var(--dark);border-radius:var(--radius-card);
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
}
.data-band .cell{padding:32px 26px;border-left:1px solid rgba(255,255,255,.12);}
.data-band .cell:first-child{border-left:none;}
.data-band .num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:34px;font-weight:700;color:var(--accent);line-height:1.1;}
.data-band .label{font-size:13px;color:#A7ADA3;margin-top:8px;}

/* ============ 价格 ============ */
.price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:stretch;}
.price-card{
  display:flex;flex-direction:column;background:var(--bg-alt);
  border:1px solid var(--line);border-radius:var(--radius-card);padding:32px 28px;
  transition:transform .2s ease,box-shadow .2s ease;
}
.price-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.price-card.is-featured{background:var(--dark);color:#EDEFEA;border:1px solid var(--accent);box-shadow:var(--shadow-2);}
.price-card.is-featured .price-name,.price-card.is-featured .price-unit{color:#fff;}
.price-card.is-featured .price-desc,.price-card.is-featured li{color:#B9BFB4;}
.price-head{min-height:52px;}
.price-name{font-size:19px;font-weight:700;}
.price-desc{font-size:14px;color:var(--ink-soft);margin-top:6px;}
.price-value{display:flex;align-items:flex-end;gap:6px;margin:26px 0 8px;}
.price-value .num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:44px;font-weight:700;line-height:1;}
.price-unit{font-size:14px;color:var(--ink-soft);padding-bottom:6px;}
.price-card ul{margin:22px 0 30px;display:grid;gap:12px;}
.price-card li{display:flex;gap:10px;font-size:15px;color:var(--ink-soft);line-height:1.7;}
.price-card li::before{content:"✓";color:var(--accent);font-weight:700;flex:none;}
.price-foot{margin-top:auto;}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.card{
  display:flex;flex-direction:column;background:var(--bg-alt);border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(18,20,22,.16);}
.card-cover{aspect-ratio:16/9;overflow:hidden;background:#EFEDE6;}
.card-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.card-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-title{
  font-size:18px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-excerpt{
  font-size:15px;color:var(--ink-soft);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;font-size:13px;color:var(--ink-soft);}
.card-foot time{font-family:var(--font-num);font-variant-numeric:tabular-nums;}
.empty-state{
  min-height:200px;border:1px dashed var(--line);border-radius:var(--radius-card);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  color:var(--ink-soft);text-align:center;padding:32px;background:rgba(255,255,255,.5);
}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:900px;}
.faq-item{position:relative;background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;transition:border-color .2s ease;}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--accent);transform:scaleY(0);transform-origin:top;transition:transform .25s ease;}
.faq-item.is-open::before{transform:scaleY(1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;text-align:left;font-size:17px;font-weight:600;line-height:1.6;
}
.faq-q .sign{flex:none;width:20px;height:20px;position:relative;}
.faq-q .sign::before,.faq-q .sign::after{content:"";position:absolute;background:var(--ink);border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
.faq-q .sign::before{left:0;top:9px;width:20px;height:2px;}
.faq-q .sign::after{left:9px;top:0;width:2px;height:20px;}
.faq-item.is-open .faq-q .sign::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a p{padding:0 24px 22px;font-size:15.5px;line-height:1.85;color:var(--ink-soft);}

/* ============ 收尾 CTA ============ */
.cta-section{background:var(--dark);color:#EDEFEA;padding:104px 0;}
.cta-layout{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start;}
.cta-layout h2{font-size:clamp(28px,3.4vw,44px);font-weight:700;line-height:1.14;color:#fff;}
.cta-layout .lead{margin-top:18px;color:#B9BFB4;font-size:16px;}
.form{background:var(--bg-alt);border-radius:var(--radius-card);padding:28px;color:var(--ink);}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13.5px;font-weight:600;margin-bottom:8px;}
.field input,.field textarea{
  width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-img);
  background:#FFF;transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:120px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(200,241,53,.28);}
.field.has-error input,.field.has-error textarea{border-color:var(--state-error);}
.field-msg{font-size:13px;color:var(--state-error);margin-top:6px;display:none;}
.field.has-error .field-msg{display:block;}
.form-note{font-size:13px;color:var(--ink-soft);margin-top:14px;}
.form-status{display:none;margin-top:14px;font-size:14px;padding:12px 14px;border-radius:var(--radius-img);}
.form-status.is-ok{display:block;background:rgba(47,125,79,.1);color:var(--state-ok);border:1px solid rgba(47,125,79,.3);}
.form-status.is-error{display:block;background:rgba(200,64,47,.08);color:var(--state-error);border:1px solid rgba(200,64,47,.28);}
.form-status.is-loading{display:block;background:rgba(18,20,22,.05);color:var(--ink-soft);border:1px solid var(--line);}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:#A7ADA3;padding:72px 0 28px;font-size:14.5px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .brand{color:#fff;font-size:18px;margin-bottom:14px;}
.footer-brand p{max-width:320px;line-height:1.8;}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:#A7ADA3;transition:color .18s ease;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#777D74;
}
.footer-acc-toggle{display:none;}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:55;
  display:flex;flex-direction:column;align-items:flex-end;gap:6px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta small{font-size:12px;color:var(--ink-soft);background:rgba(247,245,240,.9);padding:3px 10px;border-radius:var(--radius-pill);}

/* ============ 动效入场 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s cubic-bezier(.22,.7,.3,1),transform .42s cubic-bezier(.22,.7,.3,1);}
.reveal.is-in{opacity:1;transform:translateY(0);}
.anchor-flash{animation:flash .6s ease;}
@keyframes flash{0%{background:rgba(200,241,53,.42);}100%{background:transparent;}}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .demo-layout{grid-template-columns:1fr 320px;gap:36px;}
  .case-card{grid-template-columns:280px 1fr;}
}
@media (max-width:1024px){
  .section{padding:84px 0;}
  .feature-layout{grid-template-columns:1fr;gap:36px;}
  .demo-layout{grid-template-columns:1fr;}
  .demo-tabs{display:grid;grid-template-columns:1fr 1fr;}
  .quote-grid{grid-template-columns:1fr;}
  .price-grid{grid-template-columns:1fr;max-width:520px;}
  .news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-layout{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  :root{--nav-h:64px;}
  .container{padding:0 18px;}
  .section{padding:64px 0;}
  .nav-links,.nav-actions .btn{display:none;}
  .burger{display:inline-flex;}
  .nav-drawer{
    display:block;position:fixed;inset:var(--nav-h) 0 0 0;background:#fff;z-index:59;
    transform:translateX(100%);transition:transform .28s ease;overflow-y:auto;padding:12px 18px 120px;
  }
  body.nav-open .nav-drawer{transform:translateX(0);}
  .nav-drawer a.drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    padding:18px 4px;font-size:17px;line-height:1.4;border-bottom:1px solid var(--line);color:var(--ink);
  }
  .nav-drawer a.drawer-link.is-active{font-weight:700;}
  .nav-drawer a.drawer-link.is-active::after{content:"";width:6px;height:6px;border-radius:2px;background:var(--accent);}
  .drawer-cta{position:fixed;left:0;right:0;bottom:0;padding:12px 18px calc(12px + env(safe-area-inset-bottom));background:#fff;border-top:1px solid var(--line);}
  .hero{min-height:auto;padding:calc(var(--nav-h) + 48px) 0 48px;}
  .hero-stats{grid-template-columns:1fr 1fr;margin-top:40px;}
  .hero-stats .stat{padding:18px 0 0;}
  .hero-stats .stat:nth-child(odd){border-left:none;padding-left:0;}
  .hero-stats .stat:nth-child(n+3){border-top:1px solid rgba(255,255,255,.16);}
  .scroll-down{display:none;}
  .feature-item{grid-template-columns:1fr;gap:6px;padding:20px 0;}
  .demo-tabs{grid-template-columns:1fr;}
  .demo-steps{flex-direction:column;}
  .step-arrow{justify-content:center;transform:rotate(90deg);}
  .case-card{grid-template-columns:1fr;gap:18px;}
  .data-band{grid-template-columns:1fr 1fr;}
  .data-band .cell{border-left:none;border-top:1px solid rgba(255,255,255,.12);}
  .data-band .cell:nth-child(-n+2){border-top:none;}
  .news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:0;}
  .footer-col{border-top:1px solid rgba(255,255,255,.12);}
  .footer-col h4{
    display:flex;align-items:center;justify-content:space-between;
    padding:18px 0;margin:0;cursor:pointer;
  }
  .footer-col ul{max-height:0;overflow:hidden;transition:max-height .3s ease;}
  .footer-col.is-open ul{max-height:340px;padding-bottom:14px;}
  .float-cta{
    right:0;left:0;bottom:0;transform:none;opacity:1;visibility:visible;
    padding:8px 18px calc(8px + env(safe-area-inset-bottom));
    background:rgba(247,245,240,.96);border-top:1px solid var(--line);
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  }
  .float-cta small{display:none;}
  .float-cta .btn{width:100%;height:48px;}
  .site-footer{padding-bottom:96px;}
}
@media (max-width:480px){
  .hero h1{font-size:clamp(32px,9vw,44px);}
  .hero-cta .btn{width:100%;}
  .stat-num{font-size:26px;}
  .data-band{grid-template-columns:1fr;}
  .data-band .cell{border-top:1px solid rgba(255,255,255,.12);}
  .data-band .cell:first-child{border-top:none;}
  .form{padding:20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --bg:#F7F5F0;
  --bg-alt:#FFFFFF;
  --ink:#121416;
  --ink-soft:#5C6259;
  --line:#E3DFD4;
  --accent:#C8F135;
  --accent-ink:#0F1A00;
  --dark:#0D0F0E;
  --dark-soft:#1A1D1B;
  --state-error:#C8402F;
  --state-ok:#2F7D4F;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(18,20,22,.04);
  --shadow-2:0 8px 24px rgba(18,20,22,.08);
  --container:1200px;
  --ease:cubic-bezier(.22,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.no-scroll{overflow:hidden}
h1,h2,h3,h4{margin:0;line-height:1.18;font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1.2em}
img{display:block;max-width:100%;object-fit:cover}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (min-width:1440px){:root{--container:1280px}}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:100;
  background:rgba(247,245,240,.62);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(18,20,22,.08);
  box-shadow:0 2px 12px rgba(18,20,22,.05);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(247,245,240,.94);box-shadow:0 6px 22px rgba(18,20,22,.10)}
.nav-inner{display:flex;align-items:center;gap:28px;height:76px;transition:height .24s var(--ease)}
.site-header.is-scrolled .nav-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:9px;font-size:19px;font-weight:800;letter-spacing:-.02em;white-space:nowrap}
.brand-dot{width:9px;height:9px;border-radius:2px;background:var(--accent);box-shadow:0 0 0 3px rgba(200,241,53,.28);flex:0 0 auto}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px;flex:1 1 auto}
.nav-links a{
  position:relative;
  padding:6px 0 8px;
  font-size:15px;
  color:var(--ink-soft);
  font-weight:500;
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;right:100%;bottom:2px;
  height:2px;background:var(--accent);
  transition:right .2s var(--ease);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{right:0}
.nav-links a.is-active{color:var(--ink);font-weight:700}
.nav-links a.is-active::after{right:0}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.icon-btn{
  width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.6);
  color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;
  transition:background .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.icon-btn:hover{background:var(--bg-alt);box-shadow:var(--shadow-1);border-color:#D6D1C3}
.burger{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:rgba(255,255,255,.7);position:relative}
.burger i{position:absolute;left:50%;top:50%;width:18px;height:2px;margin:-1px 0 0 -9px;background:var(--ink);border-radius:2px;transition:background .2s var(--ease)}
.burger i::before,.burger i::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:transform .24s var(--ease),top .24s var(--ease)}
.burger i::before{top:-6px}
.burger i::after{top:6px}
.burger.is-open i{background:transparent}
.burger.is-open i::before{top:0;transform:rotate(45deg)}
.burger.is-open i::after{top:0;transform:rotate(-45deg)}

/* ---------- 按钮 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;
  transition:background .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn--primary{background:var(--accent);color:var(--accent-ink);box-shadow:var(--shadow-1)}
.btn--primary:hover{background:#BDE82A;box-shadow:var(--shadow-2);transform:translateY(-1px)}
.btn--primary:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn--ghost{border:1px solid var(--ink);color:var(--ink);background:transparent}
.btn--ghost:hover{background:var(--ink);color:#F7F5F0;transform:translateY(-1px)}
.btn--sm{height:38px;padding:0 16px;font-size:14px}
.btn--lg{height:50px;padding:0 28px;font-size:16px}
.btn[disabled],.btn[aria-disabled="true"]{opacity:.45;pointer-events:none}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--radius-pill);
  font-size:13px;font-weight:600;line-height:1.6;
  border:1px solid var(--line);color:var(--ink-soft);background:var(--bg-alt);
}
.tag--accent{background:rgba(200,241,53,.28);border-color:rgba(200,241,53,.7);color:var(--accent-ink)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px;position:relative}
.link-arrow::after{content:"";position:absolute;left:0;right:100%;bottom:-3px;height:2px;background:var(--accent);transition:right .2s var(--ease)}
.link-arrow:hover::after{right:0}
.link-arrow svg{transition:transform .2s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- 文章页骨架 ---------- */
.article-shell{padding:118px 0 0}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-soft);margin-bottom:26px}
.crumbs a{color:var(--ink-soft);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.crumbs a:hover{color:var(--ink);border-color:var(--accent)}
.crumbs .crumb-current{color:var(--ink-soft);max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{max-width:820px;margin:0 auto;text-align:left}
.article-kicker{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px}
.article-head h1{
  font-size:clamp(28px,4vw,40px);
  line-height:1.2;
  letter-spacing:-.02em;
  margin-bottom:18px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--ink-soft);margin-bottom:28px}
.article-meta .sep{width:4px;height:4px;border-radius:50%;background:#C9C4B6}
.cover-wrap{border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);background:#EFECE4;box-shadow:var(--shadow-1)}
.cover-wrap img{width:100%;aspect-ratio:16/9;height:auto}
.article-main{padding:64px 0 96px}
.article-body{max-width:760px;margin:0 auto;font-size:17px;line-height:1.85;color:#1B1E1C}
.article-body > *:first-child{margin-top:0}
.article-body h2{font-size:clamp(23px,2.4vw,30px);margin:2em 0 .8em;padding-bottom:.3em;border-bottom:1px solid var(--line)}
.article-body h3{font-size:21px;font-weight:600;margin:1.7em 0 .7em}
.article-body h4{font-size:18px;font-weight:600;margin:1.5em 0 .6em}
.article-body strong{font-weight:700}
.article-body a{color:var(--ink);border-bottom:1px solid var(--accent);transition:background .2s var(--ease)}
.article-body a:hover{background:rgba(200,241,53,.24)}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:0}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:.55em}
.article-body ul li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:2px;background:var(--accent)}
.article-body ol{counter-reset:li}
.article-body ol li{position:relative;padding-left:30px;margin-bottom:.55em;counter-increment:li}
.article-body ol li::before{content:counter(li,decimal-leading-zero);position:absolute;left:0;top:0;font-size:13px;font-weight:700;color:var(--ink-soft);font-variant-numeric:tabular-nums;line-height:1.9}
.article-body blockquote{
  margin:1.7em 0;padding:18px 22px;
  border-left:3px solid var(--accent);
  background:#F1EEE6;
  border-radius:0 12px 12px 0;
  color:#2B2F2C;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-img);margin:1.8em auto;width:100%}
.article-body figure{margin:1.8em 0}
.article-body figcaption{font-size:13px;color:var(--ink-soft);text-align:center;margin-top:8px}
.article-body table{width:100%;margin:1.7em 0;border:1px solid var(--line);font-size:15px}
.article-body th,.article-body td{padding:12px 14px;border:1px solid var(--line);text-align:left}
.article-body th{background:#F1EEE6;font-weight:600}
.article-body tbody tr:nth-child(even){background:#FBFAF6}
.article-body pre{background:var(--dark);color:#E9EDE5;padding:18px 20px;border-radius:10px;overflow-x:auto;font-size:14px;line-height:1.7;margin:1.7em 0;font-variant-numeric:tabular-nums}
.article-body code{font-family:"SFMono-Regular",Consolas,"Liberation Mono",monospace}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.empty-state{
  border:1px dashed #D3CDBF;border-radius:var(--radius-card);
  background:var(--bg-alt);padding:52px 28px;text-align:center;
}
.empty-state .empty-title{font-size:20px;font-weight:700;margin-bottom:10px}
.empty-state .empty-desc{color:var(--ink-soft);font-size:15px;max-width:44ch;margin:0 auto 22px}

/* ---------- 文末 ---------- */
.article-tail{max-width:760px;margin:56px auto 0;padding-top:32px;border-top:1px solid var(--line)}
.tail-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.pager a{
  display:block;padding:18px 20px;background:var(--bg-alt);
  border:1px solid var(--line);border-radius:var(--radius-card);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
}
.pager a:hover{border-color:#D6D1C3;box-shadow:var(--shadow-2);transform:translateY(-2px)}
.pager .pager-label{display:block;font-size:12px;color:var(--ink-soft);letter-spacing:.12em;margin-bottom:6px}
.pager .pager-title{display:block;font-size:16px;font-weight:600;line-height:1.5}
.pager .pager-next{text-align:right}

/* ---------- 相关推荐 ---------- */
.related{padding:8px 0 96px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px}
.section-index{display:block;font-size:13px;letter-spacing:.14em;color:var(--ink-soft);font-variant-numeric:tabular-nums;margin-bottom:10px}
.section-head h2{font-size:clamp(26px,3.2vw,40px)}
.section-head .rule{display:block;width:56px;height:3px;background:var(--accent);border-radius:2px;margin-top:16px}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#D8D3C6}
.card-media{position:relative;background:#EFECE4}
.card-media img{width:100%;aspect-ratio:16/9;height:auto}
.card-media .tag{position:absolute;left:14px;top:14px;background:var(--accent);border-color:rgba(200,241,53,.9);color:var(--accent-ink)}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.card-title{
  font-size:17px;font-weight:700;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-desc{
  font-size:15px;line-height:1.7;color:var(--ink-soft);margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;font-size:13px;color:var(--ink-soft)}

/* ---------- CTA / 表单 ---------- */
.cta{background:var(--dark);color:#EDEFEA;padding:88px 0}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.cta h2{font-size:clamp(28px,3.2vw,42px);color:#FAFBF7;margin-bottom:18px}
.cta p{color:rgba(237,239,234,.74);font-size:16px;max-width:46ch}
.cta-points{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.cta-points span{font-size:13px;color:rgba(237,239,234,.8);border:1px solid rgba(237,239,234,.24);border-radius:var(--radius-pill);padding:5px 13px}
.form-card{background:var(--dark-soft);border:1px solid rgba(237,239,234,.14);border-radius:var(--radius-card);padding:28px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;color:rgba(237,239,234,.72);margin-bottom:8px}
.field input,.field textarea{
  width:100%;height:48px;padding:0 14px;
  border-radius:12px;border:1px solid rgba(237,239,234,.18);
  background:#FFFFFF;color:var(--ink);font-size:15px;font-family:inherit;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:110px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(200,241,53,.24)}
.field.has-error input,.field.has-error textarea{border-color:var(--state-error)}
.field .err{display:none;font-size:13px;color:#E9705F;margin-top:6px}
.field.has-error .err{display:block}
.form-note{font-size:13px;color:rgba(237,239,234,.6);margin:14px 0 0}
.form-status{display:none;font-size:13px;margin-top:12px}
.form-status.is-ok{display:block;color:#9BD8B0}
.form-status.is-err{display:block;color:#E9705F}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#EDEFEA;padding:72px 0 28px;border-top:1px solid rgba(237,239,234,.1)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;border-bottom:1px solid rgba(237,239,234,.12)}
.footer-brand .brand{color:#FAFBF7;font-size:19px;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(237,239,234,.66);max-width:36ch}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:#FAFBF7;margin-bottom:18px}
.footer-col li{margin-bottom:12px}
.footer-col a,.footer-col span{font-size:14px;color:rgba(237,239,234,.68);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;padding-top:24px;font-size:13px;color:rgba(237,239,234,.55);font-variant-numeric:tabular-nums}

/* ---------- 浮动 CTA / 回到顶部 ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:90;
  display:inline-flex;align-items:center;gap:12px;
  padding:12px 20px;border-radius:var(--radius-pill);
  background:var(--accent);color:var(--accent-ink);
  font-weight:700;font-size:15px;
  box-shadow:0 12px 30px rgba(18,20,22,.18);
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),background .2s var(--ease);
}
.float-cta small{display:block;font-size:12px;font-weight:500;opacity:.78;line-height:1.3}
.float-cta.is-visible{opacity:1;pointer-events:auto;transform:none}
.float-cta:hover{background:#BDE82A}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .nav-links{gap:20px}
}
@media (max-width:1024px){
  .nav-links{gap:16px;font-size:14px}
  .nav-links a{font-size:14px}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .nav-inner{height:68px;gap:14px}
  .site-header.is-scrolled .nav-inner{height:62px}
  .brand{font-size:17px}
  .nav-links{
    position:fixed;left:0;right:0;top:0;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;margin:0;
    padding:96px 24px 140px;
    background:#FFFFFF;
    transform:translateX(100%);
    visibility:hidden;
    transition:transform .3s var(--ease),visibility .3s var(--ease);
    z-index:110;overflow-y:auto;
  }
  .nav-links.is-open{transform:none;visibility:visible}
  .nav-links a{font-size:17px;padding:18px 0;border-bottom:1px solid var(--line);color:var(--ink)}
  .nav-links a::after{display:none}
  .nav-links a.is-active{font-weight:700;box-shadow:inset 2px 0 0 var(--accent);padding-left:12px}
  .burger{display:block;position:relative;z-index:120}
  .nav-actions .icon-btn{display:none}
  .nav-actions .btn--sm{display:none}
  .article-shell{padding-top:100px}
  .article-main{padding:44px 0 72px}
  .article-body{font-size:16.5px}
  .pager{grid-template-columns:1fr}
  .pager .pager-next{text-align:left}
  .related{padding-bottom:72px}
  .news-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:8px}
  .cta{padding:64px 0}
  .form-card{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .float-cta{
    left:0;right:0;bottom:0;width:100%;
    border-radius:0;justify-content:center;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
    opacity:1;pointer-events:auto;transform:none;
    box-shadow:0 -6px 20px rgba(18,20,22,.14);
  }
  body{padding-bottom:0}
}
@media (max-width:480px){
  .article-head h1{font-size:26px}
  .article-meta{gap:10px}
  .crumbs .crumb-current{max-width:100%;white-space:normal}
  .btn{width:100%}
  .nav-actions .btn{width:auto}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important;animation-iteration-count:1 !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --bg:#F7F5F0;
  --bg-alt:#FFFFFF;
  --ink:#121416;
  --ink-soft:#5C6259;
  --line:#E3DFD4;
  --accent:#C8F135;
  --accent-ink:#0F1A00;
  --dark:#0D0F0E;
  --dark-soft:#1A1D1B;
  --state-error:#C8402F;
  --state-ok:#2F7D4F;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(18,20,22,.04);
  --shadow-2:0 8px 24px rgba(18,20,22,.08);
  --shadow-nav:0 2px 12px rgba(18,20,22,.05);
  --container:1200px;
  --gap:24px;
  --ease:cubic-bezier(.22,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans SC","Source Han Sans SC",Inter,system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;object-fit:cover;}
a{color:inherit;text-decoration:none;}
button,input,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
::selection{background:var(--accent);color:var(--accent-ink);}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:96px 0;}
.section--tight{padding:64px 0;}
.section--dark{background:var(--dark);color:#EDEEE9;}
.section-num{
  display:block;font-size:13px;letter-spacing:.12em;color:var(--ink-soft);
  font-weight:600;margin-bottom:14px;
}
.section--dark .section-num{color:#9AA098;}
.section-title{font-size:clamp(28px,3.4vw,46px);font-weight:700;line-height:1.15;letter-spacing:-.01em;}
.section-sub{margin-top:14px;color:var(--ink-soft);max-width:640px;font-size:16px;}
.section--dark .section-sub{color:#A9AFA6;}
.rule{width:64px;height:3px;background:var(--accent);border-radius:999px;margin-top:22px;}

/* ---------- 按钮与标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  border:1px solid transparent;font-weight:600;font-size:15px;letter-spacing:.01em;
  cursor:pointer;transition:background-color .2s var(--ease),color .2s var(--ease),
    box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--accent);color:var(--accent-ink);box-shadow:var(--shadow-1);}
.btn--primary:hover{background:#BCE228;box-shadow:var(--shadow-2);transform:translateY(-2px);}
.btn--ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn--ghost:hover{background:var(--ink);color:var(--bg);transform:translateY(-2px);}
.btn--dark{background:var(--ink);color:var(--bg);}
.btn--dark:hover{background:#26292B;transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn--light{background:rgba(255,255,255,.12);color:#EDEEE9;border-color:rgba(255,255,255,.24);}
.btn--light:hover{background:rgba(255,255,255,.2);}
.btn--sm{height:38px;padding:0 18px;font-size:14px;}
.btn--xs{height:32px;padding:0 14px;font-size:13px;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}
.link-u{position:relative;display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--ink);}
.link-u::after{
  content:"";position:absolute;left:0;bottom:-3px;height:2px;width:0;background:var(--accent);
  transition:width .2s var(--ease);
}
.link-u:hover::after{width:100%;}
.tag{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:999px;font-size:13px;font-weight:600;letter-spacing:.02em;
  border:1px solid var(--line);color:var(--ink-soft);background:var(--bg-alt);
}
.tag--accent{background:rgba(200,241,53,.35);border-color:rgba(200,241,53,.7);color:var(--accent-ink);}
.tag--dark{border-color:rgba(255,255,255,.2);color:#C9CEC5;background:transparent;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(247,245,240,.62);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(18,20,22,.08);
  box-shadow:var(--shadow-nav);
  transition:background-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(247,245,240,.94);box-shadow:0 6px 22px rgba(18,20,22,.1);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px;transition:height .24s var(--ease);}
.site-header.is-scrolled .nav-inner{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.01em;}
.brand-dot{width:8px;height:8px;border-radius:2px;background:var(--accent);box-shadow:0 0 0 3px rgba(200,241,53,.28);}
.nav-links{display:flex;align-items:center;gap:26px;font-size:15px;}
.nav-links a{position:relative;color:var(--ink-soft);font-weight:500;padding:6px 0;transition:color .2s var(--ease);}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.icon-btn{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  background:var(--bg-alt);display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.icon-btn:hover{background:var(--ink);color:var(--bg);border-color:var(--ink);}
.burger{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:var(--bg-alt);cursor:pointer;position:relative;
}
.burger i,.burger i::before,.burger i::after{
  position:absolute;left:50%;translate:-50% 0;width:18px;height:2px;background:var(--ink);border-radius:2px;content:"";
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.burger i{top:20px;}
.burger i::before{top:-6px;}
.burger i::after{top:6px;}
.burger.is-open i{background:transparent;}
.burger.is-open i::before{transform:translateY(6px) rotate(45deg);}
.burger.is-open i::after{transform:translateY(-6px) rotate(-45deg);}

/* ---------- 页头 ---------- */
.page-head{padding:150px 0 58px;border-bottom:1px solid var(--line);background:var(--bg);}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-soft);margin-bottom:22px;}
.crumb a:hover{color:var(--ink);}
.crumb span.sep{color:var(--line);}
.crumb .now{color:var(--ink-soft);}
.page-title{
  font-size:clamp(36px,5.2vw,68px);font-weight:800;line-height:1.06;letter-spacing:-.02em;
  max-width:900px;
}
.page-title em{font-style:normal;background:linear-gradient(transparent 62%,rgba(200,241,53,.75) 62%);}
.page-lead{margin-top:22px;max-width:720px;color:var(--ink-soft);font-size:17px;}
.head-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;}
.anchor-bar{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px;}
.anchor-bar a{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;
  border-radius:999px;border:1px solid var(--line);background:var(--bg-alt);
  font-size:14px;font-weight:600;color:var(--ink-soft);transition:all .2s var(--ease);
}
.anchor-bar a:hover{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);transform:translateY(-2px);}

/* ---------- 图文左重右列表 ---------- */
.split{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:start;}
.media-card{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1);transition:box-shadow .25s var(--ease),transform .25s var(--ease);}
.media-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.media-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.media-body{padding:28px 30px 32px;}
.media-body h3{font-size:24px;font-weight:700;line-height:1.3;}
.media-body p{margin-top:14px;color:var(--ink-soft);}
.mini-stats{display:flex;flex-wrap:wrap;gap:28px;margin-top:26px;padding-top:22px;border-top:1px solid var(--line);}
.mini-stat strong{display:block;font-size:26px;font-weight:800;letter-spacing:-.01em;}
.mini-stat span{font-size:13px;color:var(--ink-soft);}
.entry-list{border-top:1px solid var(--line);}
.entry-item{display:block;border-bottom:1px solid var(--line);padding:20px 4px;transition:background-color .2s var(--ease);}
.entry-item:hover{background:rgba(255,255,255,.7);}
.entry-top{display:flex;align-items:baseline;gap:14px;}
.entry-num{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--ink-soft);}
.entry-title{font-size:17px;font-weight:600;}
.entry-desc{margin-top:6px;font-size:14px;color:var(--ink-soft);line-height:1.7;}
.entry-arrow{display:inline-flex;margin-top:10px;color:var(--ink-soft);transition:transform .22s var(--ease),color .22s var(--ease);}
.entry-item:hover .entry-arrow{transform:translateX(4px);color:var(--ink);}

/* ---------- 数据带 ---------- */
.stat-band{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.stat-cell{background:var(--dark-soft);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-card);padding:30px;}
.stat-cell strong{display:block;font-size:clamp(30px,4vw,42px);font-weight:800;color:var(--accent);letter-spacing:-.02em;line-height:1.1;}
.stat-cell span{display:block;margin-top:10px;font-size:14px;color:#A9AFA6;}

/* ---------- 场景卡 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.scene-card{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);padding:30px;box-shadow:var(--shadow-1);transition:box-shadow .25s var(--ease),transform .25s var(--ease),border-color .25s var(--ease);}
.scene-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#D6D0C2;}
.scene-card h3{font-size:20px;font-weight:700;margin-bottom:10px;}
.scene-card p{color:var(--ink-soft);font-size:15px;}
.scene-icon{width:40px;height:40px;border-radius:11px;background:rgba(200,241,53,.35);display:flex;align-items:center;justify-content:center;margin-bottom:18px;color:var(--accent-ink);font-weight:800;font-size:14px;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;}
.faq-item{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);position:relative;overflow:hidden;transition:box-shadow .22s var(--ease);}
.faq-item:hover{box-shadow:var(--shadow-1);}
.faq-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--accent);transform:scaleY(0);transform-origin:top;transition:transform .26s var(--ease);}
.faq-item.is-open::before{transform:scaleY(1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:0;text-align:left;padding:22px 24px;font-size:17px;font-weight:600;
  cursor:pointer;
}
.faq-icon{position:relative;flex:0 0 18px;height:18px;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--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.is-open .faq-icon::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease);}
.faq-a-inner{padding:0 24px 24px;color:var(--ink-soft);line-height:1.85;font-size:15.5px;}

/* ---------- 收尾 CTA ---------- */
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
.form{background:var(--dark-soft);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-card);padding:28px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:#A9AFA6;margin-bottom:8px;letter-spacing:.02em;}
.field input,.field textarea{
  width:100%;background:var(--bg-alt);border:1px solid var(--line);border-radius:12px;
  padding:12px 14px;min-height:48px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:110px;resize:vertical;line-height:1.8;}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(200,241,53,.28);}
.field.is-error input,.field.is-error textarea{border-color:var(--state-error);}
.field-tip{font-size:13px;margin-top:8px;color:var(--state-error);display:none;}
.field.is-error .field-tip{display:block;}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:6px;}
.form-state{font-size:13px;display:none;}
.form-state.is-ok{display:block;color:var(--state-ok);}
.form-state.is-error{display:block;color:var(--state-error);}
.form-state.is-loading{display:block;color:#A9AFA6;}
.cta-list{margin-top:26px;display:flex;flex-direction:column;gap:14px;}
.cta-list li{display:flex;gap:12px;color:#C9CEC5;font-size:15px;}
.cta-list li::before{content:"";flex:0 0 8px;height:8px;margin-top:9px;border-radius:2px;background:var(--accent);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#C9CEC5;padding:80px 0 30px;}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
.foot-brand .brand{color:#FFF;font-size:20px;}
.foot-brand p{margin-top:18px;font-size:14.5px;color:#9AA098;max-width:320px;}
.foot-col h4{font-size:14px;font-weight:700;color:#FFF;margin-bottom:18px;letter-spacing:.06em;}
.foot-col ul{display:flex;flex-direction:column;gap:11px;font-size:14.5px;}
.foot-col a{color:#A9AFA6;transition:color .2s var(--ease);}
.foot-col a:hover{color:var(--accent);}
.foot-bottom{
  margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:#7F867D;
}
.foot-edit{color:#9AA098;}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:55;display:flex;flex-direction:column;gap:6px;align-items:flex-end;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none;}
.float-cta small{font-size:12px;color:var(--ink-soft);background:rgba(247,245,240,.9);padding:2px 8px;border-radius:999px;}

/* ---------- 入场动画 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
.anchor-flash{animation:flashBg .6s var(--ease);}
@keyframes flashBg{from{background:rgba(200,241,53,.4);}to{background:transparent;}}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  :root{--container:1120px;}
  .nav-links{gap:20px;font-size:14.5px;}
}
@media (max-width:1024px){
  .section{padding:76px 0;}
  .split{grid-template-columns:1fr;gap:32px;}
  .cta-grid{grid-template-columns:1fr;gap:36px;}
  .stat-band{grid-template-columns:1fr 1fr;}
  .nav-links{display:none;}
  .burger{display:block;}
  .nav-links.is-open{
    display:flex;flex-direction:column;align-items:flex-start;gap:0;
    position:fixed;top:0;left:0;right:0;bottom:0;z-index:70;
    background:#FFFFFF;padding:104px 24px 120px;overflow-y:auto;
    font-size:17px;
  }
  .nav-links.is-open a{width:100%;padding:18px 0;border-bottom:1px solid var(--line);color:var(--ink);}
  .nav-links.is-open a::after{display:none;}
  .nav-links.is-open a.is-active{color:var(--ink);}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .section{padding:56px 0;}
  .page-head{padding:120px 0 44px;}
  .nav-actions .btn{display:none;}
  .scene-grid{grid-template-columns:1fr;}
  .stat-band{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .foot-brand{grid-column:1 / -1;}
  .float-cta{
    left:0;right:0;bottom:0;align-items:stretch;padding:8px 16px calc(8px + env(safe-area-inset-bottom));
    background:rgba(247,245,240,.96);border-top:1px solid var(--line);
  }
  .float-cta small{display:none;}
  .float-cta .btn{width:100%;height:48px;}
  .media-body{padding:22px 20px 26px;}
}
@media (max-width:520px){
  .page-title{font-size:clamp(30px,9vw,40px);}
  .mini-stats{gap:20px;}
  .anchor-bar a{height:36px;font-size:13px;padding:0 14px;}
  .foot-grid{grid-template-columns:1fr;}
  .faq-q{font-size:16px;padding:18px 18px;}
  .faq-a-inner{padding:0 18px 20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
  --bg:#F7F5F0;
  --bg-alt:#FFFFFF;
  --ink:#121416;
  --ink-soft:#5C6259;
  --line:#E3DFD4;
  --accent:#C8F135;
  --accent-ink:#0F1A00;
  --dark:#0D0F0E;
  --dark-soft:#1A1D1B;
  --state-error:#C8402F;
  --state-ok:#2F7D4F;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(18,20,22,.04);
  --shadow-2:0 8px 24px rgba(18,20,22,.08);
  --ease:cubic-bezier(.22,.7,.3,1);
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{line-height:1.2;font-weight:700;}
input,textarea,select{font-family:inherit;font-size:16px;color:var(--ink);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
::selection{background:var(--accent);color:var(--accent-ink);}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.container{max-width:1280px;}}

/* ---------- 头部导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(247,245,240,.62);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(18,20,22,.08);
  box-shadow:0 2px 12px rgba(18,20,22,.05);
  transition:background .24s var(--ease),box-shadow .24s var(--ease),height .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(247,245,240,.94);box-shadow:0 6px 20px rgba(18,20,22,.10);}
.nav-inner{display:flex;align-items:center;gap:24px;height:76px;transition:height .24s var(--ease);}
.site-header.is-scrolled .nav-inner{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.01em;white-space:nowrap;}
.brand-dot{width:8px;height:8px;border-radius:2px;background:var(--accent);display:inline-block;flex:none;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap;}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  color:var(--ink-soft);
  white-space:nowrap;
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px;}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--radius-btn);background:var(--bg-alt);color:var(--ink);
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{background:var(--accent);border-color:var(--accent);transform:translateY(-2px);}
.burger{
  display:none;width:40px;height:40px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:var(--bg-alt);position:relative;
}
.burger i,.burger i::before,.burger i::after{
  position:absolute;left:50%;width:16px;height:2px;background:var(--ink);border-radius:2px;
  transform:translateX(-50%);transition:transform .24s var(--ease),opacity .2s var(--ease);
}
.burger i{top:50%;margin-top:-1px;}
.burger i::before{content:"";top:-6px;transform:translateX(-50%);}
.burger i::after{content:"";top:6px;transform:translateX(-50%);}
body.nav-open .burger i{background:transparent;}
body.nav-open .burger i::before{transform:translateX(-50%) translateY(6px) rotate(45deg);}
body.nav-open .burger i::after{transform:translateX(-50%) translateY(-6px) rotate(-45deg);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease),transform .2s var(--ease);
  white-space:nowrap;
}
.btn--sm{height:38px;padding:0 18px;font-size:14px;}
.btn--xs{height:32px;padding:0 14px;font-size:13px;}
.btn--primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);box-shadow:var(--shadow-1);}
.btn--primary:hover{background:#BCE325;border-color:#BCE325;box-shadow:var(--shadow-2);transform:translateY(-2px);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn--ghost:hover{background:var(--ink);color:var(--bg);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.btn--light{background:var(--bg-alt);color:var(--ink);border-color:var(--line);}
.btn--light:hover{border-color:var(--ink);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--ink);
  position:relative;padding-bottom:2px;
}
.link-more::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--ink);
  transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.link-more:hover::after{transform:scaleX(1);}

/* ---------- 胶囊标签 ---------- */
.pill{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  font-size:13px;font-weight:500;line-height:1;border:1px solid var(--line);color:var(--ink-soft);
  background:var(--bg-alt);white-space:nowrap;
}
.pill--accent{background:rgba(200,241,53,.28);border-color:rgba(200,241,53,.9);color:#33400A;}
.pill--dark{background:var(--dark);border-color:var(--dark);color:#EDEFE8;}

/* ---------- 通用板块 ---------- */
.section{padding:110px 0;}
.section--tight{padding:84px 0;}
.section--alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:52px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.12em;color:var(--ink-soft);font-variant-numeric:tabular-nums;
  text-transform:uppercase;margin-bottom:16px;
}
.section-head h2{font-size:clamp(28px,3.4vw,46px);font-weight:700;line-height:1.15;letter-spacing:-.01em;}
.section-head p{margin-top:16px;color:var(--ink-soft);font-size:17px;}
.rule-accent{width:64px;height:3px;background:var(--accent);border-radius:3px;margin-top:22px;}
.section-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}

/* ---------- 内页 Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  padding:172px 0 78px;
  background:linear-gradient(180deg,rgba(13,15,14,.72) 0%,rgba(13,15,14,.42) 45%,rgba(13,15,14,.86) 100%),
             url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  color:#F3F2EC;
}
.page-hero .eyebrow{color:rgba(243,242,236,.78);}
.page-hero h1{
  font-size:clamp(34px,5vw,64px);font-weight:800;line-height:1.06;letter-spacing:-.02em;max-width:14em;
}
.page-hero p{margin-top:20px;max-width:640px;color:rgba(243,242,236,.84);font-size:17px;}
.page-hero .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.crumb{margin-top:28px;font-size:13px;color:rgba(243,242,236,.7);}
.crumb a:hover{color:#F3F2EC;text-decoration:underline;}
.crumb span{color:var(--accent);}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:0;margin-top:44px;
  border-top:1px solid rgba(243,242,236,.22);padding-top:22px;
}
.hero-facts div{
  padding-right:34px;margin-right:34px;border-right:1px solid rgba(243,242,236,.18);
  font-size:13px;color:rgba(243,242,236,.72);
}
.hero-facts div:last-child{border-right:0;margin-right:0;padding-right:0;}
.hero-facts strong{
  display:block;font-size:26px;font-weight:800;color:var(--accent);
  font-variant-numeric:tabular-nums;letter-spacing:-.01em;line-height:1.3;
}

/* ---------- 卡片瀑布 ---------- */
.masonry{column-count:3;column-gap:24px;}
.pin-card{
  display:inline-block;width:100%;
  break-inside:avoid;-webkit-column-break-inside:avoid;page-break-inside:avoid;
  margin:0 0 24px;
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);
  overflow:hidden;
  transition:box-shadow .24s var(--ease),transform .24s var(--ease),border-color .24s var(--ease);
}
.pin-card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px);border-color:#D6D1C2;}
.pin-card figure{margin:0;overflow:hidden;background:var(--bg);}
.pin-card figure img{width:100%;object-fit:cover;transition:transform .5s var(--ease);}
.pin-card:hover figure img{transform:scale(1.02);}
.pin-card .ph-43 img{aspect-ratio:4/3;}
.pin-card .ph-169 img{aspect-ratio:16/9;}
.pin-card .ph-11 img{aspect-ratio:1/1;}
.pin-body{padding:22px 22px 24px;}
.pin-body h3{font-size:20px;font-weight:600;line-height:1.35;margin-bottom:10px;}
.pin-body p{font-size:15px;line-height:1.75;color:var(--ink-soft);margin-bottom:16px;}
.pin-tags{display:flex;flex-wrap:wrap;gap:8px;}
.pin-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-soft);font-variant-numeric:tabular-nums;
}

/* ---------- 数据维度区 ---------- */
.dim-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.dim-card{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 26px;box-shadow:var(--shadow-1);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.dim-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.dim-card .num{
  font-size:34px;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:var(--ink);
  line-height:1.2;
}
.dim-card .num small{font-size:15px;font-weight:600;color:var(--ink-soft);margin-left:4px;}
.dim-card h3{font-size:19px;font-weight:600;margin:14px 0 8px;}
.dim-card p{font-size:15px;color:var(--ink-soft);line-height:1.75;}
.dim-band{
  margin-top:32px;background:var(--dark);color:#EDEFE8;border-radius:var(--radius-card);
  padding:36px 32px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
.dim-band div{border-left:1px solid rgba(237,239,232,.18);padding-left:20px;}
.dim-band div:first-child{border-left:0;padding-left:0;}
.dim-band strong{display:block;font-size:30px;font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.25;}
.dim-band span{font-size:13px;color:rgba(237,239,232,.72);}

/* ---------- 查阅路径 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;}
.step{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:30px 26px;box-shadow:var(--shadow-1);position:relative;
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.step:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.step .idx{
  font-size:13px;letter-spacing:.12em;color:var(--ink-soft);font-variant-numeric:tabular-nums;
}
.step h3{font-size:20px;font-weight:600;margin:12px 0 10px;}
.step p{font-size:15px;color:var(--ink-soft);line-height:1.75;}
.step::after{
  content:"→";position:absolute;right:-19px;top:50%;transform:translateY(-50%);
  color:var(--ink-soft);font-size:16px;
}
.step:last-child::after{display:none;}

/* ---------- 表格化清单 ---------- */
.check-list{margin-top:28px;border-top:1px solid var(--line);}
.check-list li{
  display:flex;align-items:flex-start;gap:14px;
  padding:18px 4px;border-bottom:1px solid var(--line);
}
.check-list li i{
  flex:none;width:20px;height:20px;border-radius:6px;background:var(--accent);
  display:inline-flex;align-items:center;justify-content:center;margin-top:5px;
  color:var(--accent-ink);font-style:normal;font-size:12px;font-weight:800;
}
.check-list li b{font-weight:600;display:block;font-size:16px;}
.check-list li span{font-size:15px;color:var(--ink-soft);}

/* ---------- FAQ ---------- */
.faq{max-width:900px;margin:0 auto;}
.faq-item{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:14px;overflow:hidden;position:relative;
  transition:box-shadow .24s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--accent);
  transform:scaleY(0);transform-origin:top;transition:transform .3s var(--ease);
}
.faq-item.is-open::before{transform:scaleY(1);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;background:transparent;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);
}
.faq-sign{position:relative;width:16px;height:16px;flex:none;}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:var(--ink);border-radius:2px;transition:transform .28s var(--ease),opacity .24s var(--ease);
}
.faq-sign::before{left:0;right:0;top:7px;height:2px;}
.faq-sign::after{top:0;bottom:0;left:7px;width:2px;}
.faq-item.is-open .faq-sign::after{transform:scaleY(0);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s var(--ease);}
.faq-a-inner{padding:0 24px 24px;color:var(--ink-soft);font-size:16px;line-height:1.85;}
.faq-item.is-open{box-shadow:var(--shadow-2);}

/* ---------- 收尾 CTA ---------- */
.cta-block{background:var(--dark);color:#EDEFE8;padding:104px 0;}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start;}
.cta-block h2{font-size:clamp(28px,3.4vw,44px);font-weight:700;line-height:1.15;color:#F5F4EE;}
.cta-block p{margin-top:18px;color:rgba(237,239,232,.74);font-size:16px;max-width:34em;}
.cta-points{margin-top:26px;}
.cta-points li{
  display:flex;gap:10px;align-items:flex-start;font-size:15px;color:rgba(237,239,232,.8);
  padding:8px 0;
}
.cta-points li i{color:var(--accent);font-style:normal;font-weight:800;}
.form-card{
  background:var(--dark-soft);border:1px solid rgba(237,239,232,.14);border-radius:var(--radius-card);
  padding:30px 28px;
}
.form-row{margin-bottom:16px;}
.form-row label{display:block;font-size:13px;color:rgba(237,239,232,.7);margin-bottom:8px;}
.form-row input,.form-row textarea{
  width:100%;height:48px;padding:0 14px;border-radius:12px;border:1px solid rgba(237,239,232,.18);
  background:#FFFFFF;color:var(--ink);transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-row textarea{height:112px;padding:12px 14px;resize:vertical;line-height:1.7;}
.form-row input:focus,.form-row textarea:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(200,241,53,.22);
}
.form-row.has-error input,.form-row.has-error textarea{border-color:var(--state-error);}
.form-hint{font-size:13px;color:var(--state-error);margin-top:6px;display:none;}
.form-row.has-error .form-hint{display:block;}
.form-status{font-size:14px;margin-top:14px;}
.form-status.is-ok{color:var(--state-ok);}
.form-status.is-error{color:var(--state-error);}
.form-actions{margin-top:20px;display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.form-note{font-size:13px;color:rgba(237,239,232,.6);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#C9CCC4;padding:78px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .brand{color:#F2F1EA;font-size:19px;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(201,204,196,.78);max-width:30em;}
.footer-col h4{font-size:14px;letter-spacing:.08em;color:#F2F1EA;margin-bottom:16px;font-weight:600;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:rgba(201,204,196,.82);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(237,239,232,.12);padding:22px 0 30px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(201,204,196,.66);
}
.footer-bottom .editor{color:rgba(201,204,196,.82);}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:flex;align-items:center;gap:12px;
  opacity:0;pointer-events:none;transform:translateY(10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease);
}
.float-cta.is-show{opacity:1;pointer-events:auto;transform:translateY(0);}
.float-cta .hint{
  font-size:12px;color:var(--ink-soft);background:rgba(247,245,240,.9);
  border:1px solid var(--line);border-radius:999px;padding:4px 12px;
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);}
.reveal.is-in{
  opacity:1;transform:translateY(0);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}
@keyframes floaty{0%,100%{transform:translateY(0);}50%{transform:translateY(6px);}}
.scroll-cue{
  position:absolute;right:28px;bottom:28px;width:42px;height:42px;border-radius:50%;
  border:1px solid rgba(243,242,236,.4);display:flex;align-items:center;justify-content:center;
  color:#F3F2EC;animation:floaty 2.6s ease-in-out infinite;
}
.scroll-cue:hover{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);}
.anchor-flash{animation:flashBg .6s ease-out;}
@keyframes flashBg{from{background:rgba(200,241,53,.45);}to{background:transparent;}}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .section{padding:96px 0;}
}
@media (max-width:1024px){
  .nav-links a{padding:8px 9px;font-size:14px;}
  .masonry{column-count:2;}
  .dim-grid{grid-template-columns:repeat(2,1fr);}
  .dim-band{grid-template-columns:repeat(2,1fr);gap:28px;}
  .steps{grid-template-columns:1fr;}
  .step::after{display:none;}
  .cta-grid{grid-template-columns:1fr;gap:40px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:900px){
  .nav-links{
    position:fixed;top:64px;left:0;right:0;bottom:0;
    background:var(--bg-alt);border-top:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 120px;
    overflow-y:auto;transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity .24s var(--ease),transform .24s var(--ease);margin-left:0;
  }
  body.nav-open .nav-links{opacity:1;transform:translateY(0);pointer-events:auto;}
  .nav-links a{padding:18px 0;font-size:17px;border-bottom:1px solid var(--line);}
  .nav-links a::after{display:none;}
  .burger{display:inline-flex;align-items:center;justify-content:center;}
  .nav-actions .btn--primary{display:none;}
  .section{padding:72px 0;}
  .section--tight{padding:64px 0;}
  .page-hero{padding:140px 0 64px;}
  .hero-facts div{padding-right:22px;margin-right:22px;}
  .scroll-cue{display:none;}
}
@media (max-width:768px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .masonry{column-count:1;}
  .dim-grid{grid-template-columns:1fr;}
  .dim-band{grid-template-columns:1fr;padding:28px 24px;}
  .dim-band div{border-left:0;padding-left:0;border-top:1px solid rgba(237,239,232,.18);padding-top:16px;}
  .dim-band div:first-child{border-top:0;padding-top:0;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .float-cta{
    left:0;right:0;bottom:0;transform:none;
    padding:10px 18px calc(10px + env(safe-area-inset-bottom));
    background:rgba(247,245,240,.95);border-top:1px solid var(--line);
    justify-content:space-between;
  }
  .float-cta .btn{flex:1;}
  .float-cta .hint{display:none;}
  .page-hero h1{font-size:clamp(30px,8vw,42px);}
}
@media (max-width:520px){
  .hero-facts{flex-direction:column;gap:16px;}
  .hero-facts div{border-right:0;margin-right:0;padding-right:0;border-bottom:1px solid rgba(243,242,236,.18);padding-bottom:12px;}
  .hero-facts div:last-child{border-bottom:0;padding-bottom:0;}
  .section-head--row{flex-direction:column;align-items:flex-start;}
  .btn{width:100%;}
  .btn--xs,.btn--sm{width:auto;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important;}
  .reveal{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category2 */
:root{
  --bg:#F7F5F0;
  --bg-alt:#FFFFFF;
  --ink:#121416;
  --ink-soft:#5C6259;
  --line:#E3DFD4;
  --accent:#C8F135;
  --accent-ink:#0F1A00;
  --dark:#0D0F0E;
  --dark-soft:#1A1D1B;
  --state-error:#C8402F;
  --state-ok:#2F7D4F;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(18,20,22,.04);
  --shadow-2:0 8px 24px rgba(18,20,22,.08);
  --ease:cubic-bezier(.22,.7,.3,1);
  --nav-h:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans SC","Source Han Sans SC",Inter,system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body.is-locked{overflow:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.015em;line-height:1.2}
p{margin:0 0 1.2em}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:rgba(200,241,53,.5);color:var(--accent-ink)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1440px){.container{max-width:1280px}}
section[id]{scroll-margin-top:96px}
.mono,[data-mono],.num-tab{font-variant-numeric:tabular-nums}

/* ============ 导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  background:rgba(247,245,240,.62);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(18,20,22,.08);
  box-shadow:0 2px 12px rgba(18,20,22,.05);
  transition:background .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(247,245,240,.94);box-shadow:0 6px 20px rgba(18,20,22,.10)}
.nav-inner{display:flex;align-items:center;gap:20px;height:var(--nav-h);transition:height .24s var(--ease)}
.site-header.is-scrolled .nav-inner{height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
.brand-dot{width:8px;height:8px;border-radius:2px;background:var(--accent);flex:none}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-links a{
  position:relative;padding:9px 12px;font-size:15px;color:var(--ink-soft);border-radius:8px;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--ink);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:50%;background:rgba(255,255,255,.65);color:var(--ink-soft);
  transition:color .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{color:var(--ink);border-color:var(--ink);background:#fff}
.icon-btn:active{transform:translateY(1px)}
.burger{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:10px;background:rgba(255,255,255,.7);
}
.burger i{position:relative;display:block;width:18px;height:2px;background:var(--ink);transition:background .2s var(--ease)}
.burger i::before,.burger i::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);
  transition:transform .24s var(--ease);
}
.burger i::before{top:-6px}
.burger i::after{top:6px}
.burger[aria-expanded="true"] i{background:transparent}
.burger[aria-expanded="true"] i::before{transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"] i::after{transform:translateY(-6px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .24s var(--ease),transform .2s var(--ease);
}
.btn--primary{background:var(--accent);color:var(--accent-ink)}
.btn--primary:hover{background:#bde32b;box-shadow:0 8px 24px rgba(18,20,22,.16);transform:translateY(-2px)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{border-color:rgba(18,20,22,.5);color:var(--ink);background:transparent}
.btn--ghost:hover{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.btn--ghost-light{border-color:rgba(247,245,240,.6);color:#F7F5F0;background:transparent}
.btn--ghost-light:hover{background:#F7F5F0;color:var(--ink);border-color:#F7F5F0}
.btn--sm{height:38px;padding:0 16px;font-size:14px}
.btn--lg{height:52px;padding:0 30px;font-size:16px}
.btn--block{width:100%}
.btn:disabled{opacity:.5;pointer-events:none}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;color:var(--ink);
  background-image:linear-gradient(var(--accent),var(--accent));
  background-repeat:no-repeat;background-size:0% 2px;background-position:0 100%;
  transition:background-size .22s var(--ease);
  padding-bottom:2px;
}
.link-arrow:hover{background-size:100% 2px}
.link-arrow span{transition:transform .22s var(--ease)}
.link-arrow:hover span{transform:translateX(4px)}

/* ============ Hero ============ */
.hero{
  position:relative;isolation:isolate;
  min-height:88vh;display:flex;align-items:flex-end;
  padding:170px 0 64px;
  color:#F7F5F0;overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background-image:linear-gradient(180deg,rgba(13,15,14,.82) 0%,rgba(13,15,14,.46) 42%,rgba(13,15,14,.94) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:rgba(247,245,240,.66);margin-bottom:28px}
.crumb a:hover{color:var(--accent)}
.crumb span.sep{color:rgba(247,245,240,.35)}
.crumb-current{color:#F7F5F0}
.hero-title{font-size:clamp(40px,6.4vw,92px);font-weight:800;line-height:1.04;letter-spacing:-.02em;max-width:15em}
.hero-title__kicker{
  display:block;font-size:14px;font-weight:700;letter-spacing:.22em;
  color:var(--accent);margin-bottom:18px;text-transform:none;
}
.hero-title__main{display:block}
.hero-lead{
  max-width:640px;margin:26px 0 0;font-size:clamp(17px,1.6vw,19px);line-height:1.8;
  color:rgba(247,245,240,.82);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;margin-top:64px;padding-top:24px;border-top:1px solid rgba(247,245,240,.22);
}
.hero-stats strong{
  display:block;font-size:clamp(22px,2.6vw,32px);font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-stats span{display:block;font-size:12px;letter-spacing:.08em;color:rgba(247,245,240,.68);margin-top:6px}

/* ============ 引导条 ============ */
.guide-strip{background:var(--bg);border-bottom:1px solid var(--line)}
.guide-strip .container{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:18px;padding-top:24px;padding-bottom:24px;
}
.guide-strip p{margin:0;font-size:16px;color:var(--ink-soft);max-width:760px}

/* ============ 区块通用 ============ */
.section{padding:104px 0}
.section--alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--dark{background:var(--dark);color:#EDECE6}
.section--dark .sec-num{color:rgba(237,236,230,.5)}
.section--dark .section-head p{color:rgba(237,236,230,.72)}
.sec-num{display:block;font-size:13px;letter-spacing:.12em;color:var(--ink-soft);font-variant-numeric:tabular-nums}
.section-head{max-width:760px;margin-bottom:56px}
.section-head h2{margin-top:14px;font-size:clamp(28px,3.4vw,46px);line-height:1.15}
.section-head .rule{display:block;width:64px;height:3px;background:var(--accent);margin:20px 0}
.section-head p{color:var(--ink-soft);margin:0}
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============ 价值区 · 左重右列表 ============ */
.value-layout{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:64px;align-items:start}
.value-aside h2{font-size:clamp(26px,2.8vw,38px);margin:14px 0 20px}
.value-aside p{color:var(--ink-soft);font-size:16px}
.value-aside .rule{display:block;width:56px;height:3px;background:var(--accent);margin:22px 0}
.value-list{border-top:1px solid var(--line)}
.value-item{
  display:grid;grid-template-columns:64px minmax(0,1fr);gap:20px;
  padding:28px 0;border-bottom:1px solid var(--line);
  transition:transform .24s var(--ease);
}
.value-item:hover{transform:translateX(4px)}
.value-item .num{font-size:14px;letter-spacing:.1em;color:var(--ink-soft);font-variant-numeric:tabular-nums;padding-top:4px}
.value-item h3{font-size:21px;font-weight:600;margin-bottom:6px}
.value-item p{margin:0;font-size:15.5px;color:var(--ink-soft)}

/* ============ 时间线 ============ */
.timeline{position:relative;margin-top:8px}
.timeline::before{content:"";position:absolute;left:4px;top:10px;bottom:24px;width:1px;background:var(--line)}
.tl-item{position:relative;padding-left:44px;padding-bottom:56px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:0;top:11px;width:9px;height:9px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 4px rgba(200,241,53,.22);
}
.tl-step{font-size:13px;letter-spacing:.12em;color:var(--ink-soft);font-variant-numeric:tabular-nums}
.tl-item h3{font-size:clamp(20px,2vw,25px);font-weight:600;margin:8px 0 10px}
.tl-item p{margin:0;color:var(--ink-soft);max-width:720px}
.tl-media{
  margin-top:22px;border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);max-width:640px;background:var(--bg-alt);
}
.tl-media img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ============ 维度卡 ============ */
.metric-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.metric-card{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 24px;box-shadow:var(--shadow-1);
  transition:box-shadow .24s var(--ease),transform .24s var(--ease);
}
.metric-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
.metric-card .figure{
  font-size:34px;font-weight:700;line-height:1;font-variant-numeric:tabular-nums;
  color:var(--ink);display:flex;align-items:baseline;gap:8px;
}
.metric-card .figure em{font-style:normal;font-size:14px;font-weight:500;color:var(--ink-soft);letter-spacing:.06em}
.metric-card h3{font-size:18px;font-weight:600;margin:18px 0 8px}
.metric-card p{margin:0;font-size:15px;color:var(--ink-soft)}

/* ============ 图文交错 ============ */
.duo{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:64px;align-items:center}
.duo + .duo{margin-top:88px}
.duo__media{border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);background:var(--bg-alt)}
.duo__media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.duo__body h3{font-size:clamp(22px,2.4vw,30px);margin:14px 0 16px}
.duo__body p{color:var(--ink-soft);font-size:16px}
.duo--reverse .duo__media{order:2}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;
  font-size:14px;color:var(--ink);border:1px solid var(--line);background:var(--bg-alt);
}
.tag--accent{background:rgba(200,241,53,.28);border-color:rgba(200,241,53,.7);color:var(--accent-ink)}

/* ============ 数据带 ============ */
.databand{background:var(--dark-soft);border-radius:var(--radius-card);padding:40px 32px;margin-top:72px}
.databand-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px}
.databand-grid strong{
  display:block;font-size:clamp(26px,3vw,38px);font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1.15;
}
.databand-grid span{display:block;font-size:13px;color:rgba(237,236,230,.7);margin-top:8px;letter-spacing:.04em}

/* ============ FAQ ============ */
.faq-list{max-width:900px}
.faq-item{
  position:relative;background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);
  margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-1);
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--accent);
  transform:scaleY(0);transform-origin:top;transition:transform .28s var(--ease);
}
.faq-item.is-open::before{transform:scaleY(1)}
.faq-item.is-open{box-shadow:var(--shadow-2);border-color:#D9D4C6}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 24px;text-align:left;font-size:17px;font-weight:600;line-height:1.6;
}
.faq-q:hover{color:#000}
.faq-icon{position:relative;width:16px;height:16px;flex:none}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ink);transition:transform .24s var(--ease),opacity .24s var(--ease)}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-a-inner{padding:0 24px 22px;color:var(--ink-soft);font-size:16px;line-height:1.85}
.faq-a-inner p{margin:0}

/* ============ CTA / 表单 ============ */
.cta-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:64px;align-items:center}
.cta-left h2{font-size:clamp(28px,3.4vw,44px);margin:14px 0 18px}
.cta-left p{color:rgba(237,236,230,.74);max-width:520px}
.cta-points{margin-top:26px;display:grid;gap:12px}
.cta-points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:rgba(237,236,230,.8)}
.cta-points li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent);margin-top:9px;flex:none}
.form-card{background:rgba(255,255,255,.04);border:1px solid rgba(247,245,240,.16);border-radius:var(--radius-card);padding:28px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;letter-spacing:.04em;color:rgba(237,236,230,.72);margin-bottom:8px}
.field input,.field textarea{
  width:100%;background:#fff;color:var(--ink);border:1px solid transparent;border-radius:12px;
  padding:13px 16px;font-size:15px;line-height:1.6;font-family:inherit;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{min-height:112px;resize:vertical}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(200,241,53,.24)}
.field.has-error input,.field.has-error textarea{border-color:var(--state-error);box-shadow:0 0 0 4px rgba(200,64,47,.14)}
.field .msg{display:none;font-size:13px;color:#F0A99C;margin-top:6px}
.field.has-error .msg{display:block}
.form-status{margin-top:14px;font-size:14px;min-height:22px}
.form-status.is-ok{color:var(--accent)}
.form-status.is-error{color:#F0A99C}
.form-tip{margin:14px 0 0;font-size:13px;color:rgba(237,236,230,.55)}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(237,236,230,.78);padding:80px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px}
.footer-brand .brand{color:#F7F5F0;font-size:20px}
.footer-brand p{margin:18px 0 0;font-size:15px;max-width:320px;color:rgba(237,236,230,.66)}
.footer-note{margin-top:14px;font-size:13px;color:rgba(237,236,230,.5);letter-spacing:.04em}
.footer-col h4{font-size:14px;font-weight:600;color:#F7F5F0;letter-spacing:.06em;margin-bottom:18px}
.footer-col li{margin-bottom:10px;font-size:14.5px}
.footer-col a{color:rgba(237,236,230,.72);transition:color .2s var(--ease)}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(247,245,240,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(237,236,230,.5);
}
.footer-bottom p{margin:0}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:80;
  display:flex;flex-direction:column;align-items:flex-end;gap:8px;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .28s var(--ease),transform .28s var(--ease);
}
.float-cta.is-visible{opacity:1;transform:none;pointer-events:auto}
.float-cta small{font-size:12px;color:var(--ink-soft);background:rgba(247,245,240,.9);padding:3px 10px;border-radius:999px;border:1px solid var(--line)}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .section{padding:92px 0}
  .value-layout{gap:48px}
}
@media (max-width:1024px){
  .nav-links{
    position:fixed;left:0;right:0;top:72px;bottom:0;z-index:88;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--bg-alt);padding:16px 24px 140px;margin:0;
    transform:translateY(-115%);transition:transform .32s var(--ease);
    overflow-y:auto;border-top:1px solid var(--line);
  }
  .nav-links.is-open{transform:none}
  .nav-links a{padding:18px 0;font-size:17px;border-bottom:1px solid var(--line);border-radius:0;color:var(--ink)}
  .nav-links a::after{display:none}
  .nav-links a.is-active{color:var(--ink);font-weight:700}
  .burger{display:inline-flex}
  .nav-actions .btn--sm{display:none}
  .hero{padding:150px 0 56px;min-height:auto}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin-top:48px}
  .value-layout{grid-template-columns:1fr;gap:40px}
  .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .duo{grid-template-columns:1fr;gap:32px}
  .duo--reverse .duo__media{order:0}
  .duo + .duo{margin-top:64px}
  .databand-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .cta-grid{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
}
@media (max-width:768px){
  body{font-size:16px}
  .container{padding:0 18px}
  .section{padding:72px 0}
  .section-head{margin-bottom:40px}
  .hero-title{font-size:clamp(32px,9vw,46px)}
  .hero-lead{font-size:16.5px}
  .hero-actions .btn{flex:1 1 auto}
  .timeline{padding-left:0}
  .timeline::before{left:4px}
  .tl-item{padding-left:32px;padding-bottom:44px}
  .tl-item::before{left:0;top:9px}
  .metric-grid{grid-template-columns:1fr}
  .databand{padding:30px 22px;margin-top:52px}
  .faq-q{padding:18px 18px;font-size:16px}
  .faq-a-inner{padding:0 18px 18px;font-size:15.5px}
  .form-card{padding:22px}
  .float-cta{
    left:0;right:0;bottom:0;align-items:stretch;gap:0;
    padding:0;
  }
  .float-cta small{display:none}
  .float-cta .btn{
    width:100%;height:56px;border-radius:0;
    padding-bottom:env(safe-area-inset-bottom);
    box-shadow:0 -6px 20px rgba(18,20,22,.16);
  }
  .site-footer{padding-bottom:96px}
}
@media (max-width:520px){
  .hero-stats{grid-template-columns:1fr 1fr;gap:18px}
  .hero-stats strong{font-size:22px}
  .value-item{grid-template-columns:44px minmax(0,1fr);gap:14px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .tag-row{gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
:root{
  --bg:#F7F5F0;
  --bg-alt:#FFFFFF;
  --ink:#121416;
  --ink-soft:#5C6259;
  --line:#E3DFD4;
  --accent:#C8F135;
  --accent-ink:#0F1A00;
  --dark:#0D0F0E;
  --dark-soft:#1A1D1B;
  --state-error:#C8402F;
  --state-ok:#2F7D4F;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(18,20,22,.04);
  --sh-2:0 8px 24px rgba(18,20,22,.08);
  --container:1200px;
  --gap:24px;
  --sec-pad:clamp(56px,7vw,110px);
  --font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
input,textarea,select{font-family:inherit;font-size:16px}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
::selection{background:var(--accent);color:var(--accent-ink)}

.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%}
@media (min-width:1440px){:root{--container:1280px}}

.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}

/* ============ 导航 ============ */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:120;
  background:rgba(247,245,240,.62);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(18,20,22,.08);
  box-shadow:0 2px 12px rgba(18,20,22,.05);
  transition:background .24s ease,box-shadow .24s ease;
}
.site-header.is-scrolled{
  background:rgba(247,245,240,.94);
  box-shadow:0 6px 24px rgba(18,20,22,.10);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:76px;
  transition:height .24s ease;
}
.site-header.is-scrolled .nav-inner{height:64px}
.brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:19px;
  font-weight:800;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.brand-dot{
  width:9px;height:9px;border-radius:2px;
  background:var(--accent);
  box-shadow:0 0 0 3px rgba(200,241,53,.28);
  flex:0 0 auto;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:15px;
  color:var(--ink-soft);
  border-radius:8px;
  transition:color .2s ease,background .2s ease;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease;
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--ink);font-weight:600}
.nav-links a.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  background:transparent;
  border:1px solid var(--line);
  border-radius:var(--r-pill);
  color:var(--ink);
  cursor:pointer;
  transition:background .2s ease,border-color .2s ease;
}
.icon-btn:hover{background:#fff;border-color:#CFC9BA}
.burger{
  display:none;
  width:44px;height:44px;
  border:1px solid var(--line);
  border-radius:12px;
  background:transparent;
  cursor:pointer;
  position:relative;
}
.burger i,.burger i::before,.burger i::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:18px;height:2px;
  background:var(--ink);
  border-radius:2px;
  transform:translate(-50%,-50%);
  transition:transform .22s ease,opacity .22s ease;
}
.burger i::before{transform:translate(-50%,-6px)}
.burger i::after{transform:translate(-50%,6px)}
body.nav-open .burger i{background:transparent}
body.nav-open .burger i::before{transform:translate(-50%,0) rotate(45deg)}
body.nav-open .burger i::after{transform:translate(-50%,0) rotate(-45deg)}

/* ============ 按钮 / 标签 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  font-size:15px;
  font-weight:600;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  cursor:pointer;
  transition:background .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease,color .2s ease;
}
.btn--primary{background:var(--accent);color:var(--accent-ink);box-shadow:var(--sh-1)}
.btn--primary:hover{background:#BCE42B;box-shadow:var(--sh-2);transform:translateY(-2px)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.btn--ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px)}
.btn--light{background:transparent;border-color:rgba(247,245,240,.4);color:#F7F5F0}
.btn--light:hover{background:rgba(247,245,240,.12);border-color:rgba(247,245,240,.7)}
.btn--sm{height:38px;padding:0 16px;font-size:14px}
.btn--xs{height:32px;padding:0 14px;font-size:13px}
.btn[disabled],.btn.is-disabled{opacity:.5;pointer-events:none}
.text-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
  font-size:15px;
  color:var(--ink);
}
.text-link::after{
  content:"";
  position:absolute;
  left:0;bottom:-3px;
  width:100%;height:1px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease;
}
.text-link:hover::after{transform:scaleX(1)}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  font-size:14px;
  line-height:1.5;
  border-radius:var(--r-pill);
  border:1px solid var(--line);
  color:var(--ink-soft);
  background:var(--bg-alt);
}
.tag--accent{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:600}
.tag--soft{background:rgba(200,241,53,.22);border-color:rgba(200,241,53,.6);color:var(--ink)}

/* ============ 页头 ============ */
.page-hero{
  padding:140px 0 0;
  background:var(--bg);
  border-bottom:1px solid var(--line);
}
.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-soft);
  margin-bottom:22px;
}
.crumb a:hover{color:var(--ink)}
.crumb .sep{opacity:.5}
.crumb .cur{color:var(--ink-soft)}
.page-hero h1{
  font-size:clamp(34px,5vw,66px);
  font-weight:800;
  line-height:1.08;
  letter-spacing:-.02em;
  max-width:16em;
}
.page-hero h1 .hl{
  display:block;
  font-size:clamp(20px,2.4vw,30px);
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink-soft);
  margin-top:14px;
}
.page-hero .lead{
  margin-top:22px;
  max-width:46em;
  font-size:17px;
  color:var(--ink-soft);
}
.page-hero .hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:32px;
}
.page-hero .quickbar{
  display:flex;
  flex-wrap:wrap;
  gap:28px;
  margin:48px 0 0;
  padding:22px 0 30px;
  border-top:1px solid var(--line);
}
.quick-item .num{
  font-size:26px;
  font-weight:800;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.quick-item .cap{
  font-size:12px;
  color:var(--ink-soft);
  letter-spacing:.04em;
}

/* ============ 板块通用 ============ */
.section{padding:var(--sec-pad) 0}
.section--tight{padding:calc(var(--sec-pad) * .62) 0}
.section--dark{background:var(--dark);color:#F1F0EC}
.section--dark .sec-desc,.section--dark .eyebrow{color:rgba(241,240,236,.66)}
.section--alt{background:#FFFFFF;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:56em;margin-bottom:44px}
.eyebrow{
  display:inline-block;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--ink-soft);
  font-variant-numeric:tabular-nums;
  margin-bottom:14px;
}
.sec-title{
  font-size:clamp(28px,3.4vw,46px);
  font-weight:700;
  line-height:1.15;
  letter-spacing:-.015em;
}
.sec-title::after{
  content:"";
  display:block;
  width:64px;height:3px;
  margin-top:18px;
  background:var(--accent);
  border-radius:2px;
}
.sec-desc{
  margin-top:20px;
  font-size:17px;
  color:var(--ink-soft);
  max-width:44em;
}
.sec-head--row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  max-width:none;
}

/* ============ 对照表 ============ */
.table-shell{
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
}
.table-scroll{overflow-x:auto}
.cmp-table{min-width:760px;font-size:15px}
.cmp-table thead th{
  background:var(--dark);
  color:#F1F0EC;
  text-align:left;
  font-weight:600;
  font-size:14px;
  letter-spacing:.04em;
  padding:0 20px;
  height:56px;
  white-space:nowrap;
}
.cmp-table tbody tr{border-bottom:1px solid var(--line)}
.cmp-table tbody tr:last-child{border-bottom:0}
.cmp-table tbody tr:nth-child(even){background:#FCFBF8}
.cmp-table tbody th[scope="row"]{
  text-align:left;
  font-weight:700;
  font-size:16px;
  padding:0 20px;
  height:56px;
  white-space:nowrap;
  color:var(--ink);
}
.cmp-table tbody td{
  padding:0 20px;
  height:56px;
  color:var(--ink-soft);
  vertical-align:middle;
}
.cmp-table tbody td:last-child{
  font-variant-numeric:tabular-nums;
  white-space:nowrap;
  color:var(--ink);
}
.cmp-table tbody tr:hover{background:#F4F7E8}
.table-foot{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  margin-top:20px;
  font-size:13px;
  color:var(--ink-soft);
}

/* ============ 流程 ============ */
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--gap);
}
.step{
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:28px 26px 30px;
  box-shadow:var(--sh-1);
  transition:box-shadow .2s ease,transform .2s ease;
}
.step:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.step .step-no{
  font-size:13px;
  letter-spacing:.14em;
  color:var(--ink-soft);
  font-variant-numeric:tabular-nums;
}
.step h3{
  margin-top:12px;
  font-size:22px;
  font-weight:600;
  line-height:1.35;
}
.step p{margin-top:12px;font-size:15px;color:var(--ink-soft)}

/* ============ 图文 ============ */
.split{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:56px;
  align-items:center;
}
.split img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:var(--r-img);
  border:1px solid var(--line);
}
.split-list{margin-top:30px;display:grid;gap:18px}
.split-list li{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:14px;
  align-items:start;
  padding-bottom:18px;
  border-bottom:1px solid var(--line);
}
.split-list li:last-child{border-bottom:0;padding-bottom:0}
.split-list .k{
  font-size:13px;
  font-weight:700;
  color:var(--accent-ink);
  background:var(--accent);
  border-radius:8px;
  padding:3px 9px;
  font-variant-numeric:tabular-nums;
  line-height:1.6;
}
.split-list .t{font-size:15px;color:var(--ink-soft)}
.split-list .t strong{display:block;color:var(--ink);font-size:16px;font-weight:600;margin-bottom:2px}

/* ============ 卡片网格 ============ */
.card-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:var(--gap);
}
.card{
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  box-shadow:var(--sh-1);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:box-shadow .2s ease,transform .2s ease;
}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.card-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.card h3{font-size:20px;font-weight:600;line-height:1.4}
.card p{font-size:15px;color:var(--ink-soft);line-height:1.8}
.card .card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:6px}

/* ============ 场景列表 ============ */
.scene-list{display:grid;gap:0;border-top:1px solid var(--line)}
.scene{
  display:grid;
  grid-template-columns:64px 1fr 1.2fr;
  gap:24px;
  align-items:start;
  padding:28px 0;
  border-bottom:1px solid var(--line);
}
.scene .no{
  font-size:14px;
  color:var(--ink-soft);
  font-variant-numeric:tabular-nums;
  letter-spacing:.1em;
  padding-top:6px;
}
.scene h3{font-size:22px;font-weight:600;line-height:1.35}
.scene p{font-size:15px;color:var(--ink-soft)}

/* ============ FAQ ============ */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:box-shadow .2s ease;
}
.faq-item:hover{box-shadow:var(--sh-1)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  text-align:left;
  background:transparent;
  border:0;
  padding:20px 22px;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  cursor:pointer;
  position:relative;
}
.faq-q::before{
  content:"";
  position:absolute;
  left:0;top:12px;bottom:12px;
  width:2px;
  background:var(--accent);
  opacity:0;
  transition:opacity .2s ease;
}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-icon{
  position:relative;
  flex:0 0 auto;
  width:16px;height:16px;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink);
  border-radius:2px;
  transition:transform .22s ease,opacity .22s ease;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item.is-open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .28s ease;
}
.faq-a-inner{
  padding:0 22px 22px;
  font-size:16px;
  color:var(--ink-soft);
  line-height:1.85;
}

/* ============ CTA 与表单 ============ */
.cta-panel{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:start;
}
.cta-panel h2{
  font-size:clamp(28px,3.4vw,44px);
  font-weight:700;
  line-height:1.18;
  letter-spacing:-.015em;
}
.cta-panel .cta-desc{
  margin-top:18px;
  font-size:16px;
  color:rgba(241,240,236,.72);
  max-width:32em;
}
.cta-meta{
  margin-top:34px;
  display:grid;
  gap:14px;
  font-size:15px;
  color:rgba(241,240,236,.72);
}
.cta-meta span{display:flex;gap:10px;align-items:baseline}
.cta-meta b{
  color:var(--accent);
  font-variant-numeric:tabular-nums;
  font-weight:700;
}
.form-card{
  background:var(--dark-soft);
  border:1px solid rgba(241,240,236,.14);
  border-radius:var(--r-card);
  padding:30px;
}
.field{display:grid;gap:8px;margin-bottom:18px}
.field label{font-size:14px;color:rgba(241,240,236,.78)}
.field input,.field textarea{
  width:100%;
  height:48px;
  padding:0 14px;
  background:#FFFFFF;
  border:1px solid transparent;
  border-radius:12px;
  color:var(--ink);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:120px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:#9A9F94}
.field input:focus,.field textarea:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(200,241,53,.28);
}
.field.has-error input,.field.has-error textarea{border-color:var(--state-error)}
.field .err{
  font-size:13px;
  color:#F0A79C;
  min-height:0;
}
.form-note{font-size:13px;color:rgba(241,240,236,.6);margin-top:14px}
.form-status{
  margin-top:16px;
  font-size:14px;
  border-radius:10px;
  padding:0 14px;
  max-height:0;
  overflow:hidden;
  transition:max-height .24s ease,padding .24s ease;
}
.form-status.is-ok{max-height:80px;padding:12px 14px;background:rgba(47,125,79,.18);color:#9FE3BE;border:1px solid rgba(47,125,79,.5)}
.form-status.is-err{max-height:80px;padding:12px 14px;background:rgba(200,64,47,.16);color:#F3ACA1;border:1px solid rgba(200,64,47,.5)}
.form-status.is-loading{max-height:80px;padding:12px 14px;background:rgba(241,240,236,.1);color:rgba(241,240,236,.8);border:1px solid rgba(241,240,236,.22)}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--dark);
  color:rgba(241,240,236,.76);
  padding:72px 0 32px;
  font-size:15px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(241,240,236,.12);
}
.footer-brand .brand{color:#F7F5F0;font-size:20px;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;max-width:26em;color:rgba(241,240,236,.66)}
.footer-col h4{
  font-size:14px;
  letter-spacing:.1em;
  color:#F7F5F0;
  font-weight:700;
  margin-bottom:16px;
}
.footer-col ul{display:grid;gap:11px}
.footer-col a{
  font-size:14px;
  color:rgba(241,240,236,.66);
  transition:color .2s ease;
}
.footer-col a:hover{color:var(--accent)}
.footer-col p{font-size:14px;color:rgba(241,240,236,.66);line-height:1.8}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding-top:26px;
  font-size:13px;
  color:rgba(241,240,236,.52);
  font-variant-numeric:tabular-nums;
}
.footer-bottom .editor{color:rgba(241,240,236,.72)}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:110;
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:8px;
  opacity:0;
  pointer-events:none;
  transform:translateY(10px);
  transition:opacity .28s ease,transform .28s ease;
}
.float-cta.is-show{opacity:1;pointer-events:auto;transform:none}
.float-cta .hint{font-size:12px;color:var(--ink-soft);background:rgba(247,245,240,.88);padding:3px 10px;border-radius:var(--r-pill);border:1px solid var(--line)}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s cubic-bezier(.22,.7,.3,1),transform .42s cubic-bezier(.22,.7,.3,1)}
.reveal.is-in{opacity:1;transform:none}
.anchor-flash{animation:flash 600ms ease}
@keyframes flash{
  0%{background:rgba(200,241,53,.35)}
  100%{background:transparent}
}
@keyframes floaty{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(6px)}
}

/* ============ 响应式 ============ */
@media (max-width:1280px){
  .split{gap:40px}
}
@media (max-width:1024px){
  .nav-links a{padding:8px 9px;font-size:14px}
  .steps{grid-template-columns:1fr 1fr}
  .card-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .split{grid-template-columns:1fr;gap:32px}
  .cta-panel{grid-template-columns:1fr;gap:36px}
  .scene{grid-template-columns:48px 1fr;gap:18px}
  .scene p{grid-column:2}
}
@media (max-width:768px){
  body{font-size:16px}
  .icon-btn{display:none}
  .burger{display:inline-block}
  .nav-links{
    position:absolute;
    top:100%;left:0;right:0;
    height:calc(100vh - 64px);
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:12px 24px calc(96px + env(safe-area-inset-bottom));
    background:#FFFFFF;
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-6px);
    transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
  }
  body.nav-open .nav-links{opacity:1;visibility:visible;transform:none}
  .nav-links a{
    padding:18px 0;
    font-size:17px;
    border-bottom:1px solid var(--line);
    border-radius:0;
    color:var(--ink);
  }
  .nav-links a::after{display:none}
  .page-hero{padding-top:112px}
  .page-hero .quickbar{gap:20px 26px;margin-top:34px}
  .steps{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr}
  .scene{grid-template-columns:1fr;gap:8px}
  .scene .no{padding-top:0}
  .scene p{grid-column:1}
  .sec-head--row{flex-direction:column;align-items:flex-start;gap:16px}

  /* 表格卡片化 */
  .table-shell{background:transparent;border:0;box-shadow:none;border-radius:0;overflow:visible}
  .table-scroll{overflow:visible}
  .cmp-table{min-width:0;display:block}
  .cmp-table thead{display:none}
  .cmp-table tbody,
  .cmp-table tr,
  .cmp-table th,
  .cmp-table td{display:block;width:100%}
  .cmp-table tbody tr{
    background:var(--bg-alt)!important;
    border:1px solid var(--line);
    border-radius:var(--r-card);
    padding:6px 18px 10px;
    margin-bottom:14px;
    box-shadow:var(--sh-1);
  }
  .cmp-table tbody th[scope="row"]{
    height:auto;
    padding:16px 0 12px;
    font-size:18px;
    border-bottom:1px solid var(--line);
    white-space:normal;
  }
  .cmp-table tbody td{
    display:flex;
    align-items:flex-start;
    justify-content:space-between;
    gap:16px;
    height:auto;
    padding:11px 0;
    border-bottom:1px dashed var(--line);
    white-space:normal;
    text-align:right;
  }
  .cmp-table tbody td:last-child{border-bottom:0}
  .cmp-table tbody td::before{
    content:attr(data-th);
    flex:0 0 80px;
    text-align:left;
    font-size:13px;
    color:var(--ink-soft);
    letter-spacing:.02em;
  }
  .split img{aspect-ratio:16/10}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .site-footer{padding:56px 0 26px}
  .float-cta{
    right:0;left:0;bottom:0;
    align-items:stretch;
    transform:none;
  }
  .float-cta .hint{display:none}
  .float-cta .btn{
    width:100%;
    height:56px;
    border-radius:0;
    padding-bottom:env(safe-area-inset-bottom);
  }
}
@media (max-width:520px){
  .container{padding:0 18px}
  .page-hero h1{font-size:clamp(30px,8.4vw,42px)}
  .page-hero .hero-actions .btn{width:100%}
  .form-card{padding:22px}
  .quick-item .num{font-size:22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category5 */
/* ===== 设计变量 ===== */
:root{
  --bg:#F7F5F0;
  --bg-alt:#FFFFFF;
  --ink:#121416;
  --ink-soft:#5C6259;
  --line:#E3DFD4;
  --accent:#C8F135;
  --accent-ink:#0F1A00;
  --accent-soft:rgba(200,241,53,.22);
  --dark:#0D0F0E;
  --dark-soft:#1A1D1B;
  --state-error:#C8402F;
  --state-ok:#2F7D4F;
  --radius-card:14px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(18,20,22,.04);
  --shadow-2:0 8px 24px rgba(18,20,22,.08);
  --shadow-nav:0 2px 12px rgba(18,20,22,.05);
  --container:1200px;
  --gutter:24px;
  --ease:cubic-bezier(.22,.7,.3,1);
}

/* ===== reset / base ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.85;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden;}
img{max-width:100%;display:block;border-radius:var(--radius-img);}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,textarea,select{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
figure{margin:0;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
::selection{background:var(--accent);color:var(--accent-ink);}

/* ===== 容器与栅格 ===== */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 var(--gutter);
}
@media (min-width:1440px){
  .container{max-width:1280px;}
}
.grid{display:grid;gap:24px;}
.section{padding:96px 0;}
.section--tight{padding:72px 0;}
@media (max-width:1024px){ .section{padding:72px 0;} .section--tight{padding:56px 0;} }
@media (max-width:768px){ .section{padding:56px 0;} .section--tight{padding:44px 0;} }

/* ===== 排版层级 ===== */
h1,.h1{
  font-size:clamp(40px,6.4vw,92px);
  font-weight:800;
  line-height:1.04;
  letter-spacing:-.02em;
}
h2,.h2{
  font-size:clamp(28px,3.4vw,46px);
  font-weight:700;
  line-height:1.15;
  letter-spacing:-.01em;
}
h3,.h3{font-size:23px;font-weight:600;line-height:1.4;}
.lede{font-size:18px;line-height:1.8;color:var(--ink-soft);max-width:62ch;}
.small{font-size:13px;line-height:1.6;color:var(--ink-soft);}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:13px;
  letter-spacing:.12em;
  color:var(--ink-soft);
  font-variant-numeric:tabular-nums;
  margin-bottom:18px;
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;background:var(--ink-soft);opacity:.5;
}
.rule-accent{
  width:56px;height:3px;background:var(--accent);border-radius:2px;margin:18px 0 26px;
}
.section-head{max-width:820px;margin-bottom:56px;}
.section-head p{margin-top:16px;color:var(--ink-soft);font-size:17px;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
  white-space:nowrap;
  cursor:pointer;
}
.btn--sm{height:38px;padding:0 18px;font-size:14px;}
.btn--xs{height:32px;padding:0 14px;font-size:13px;}
.btn--primary{background:var(--accent);color:var(--accent-ink);}
.btn--primary:hover{background:#bde829;box-shadow:var(--shadow-2);transform:translateY(-2px);}
.btn--primary:active{transform:translateY(0);}
.btn--ghost{border-color:rgba(18,20,22,.28);color:var(--ink);background:transparent;}
.btn--ghost:hover{border-color:var(--ink);background:rgba(18,20,22,.04);transform:translateY(-2px);}
.btn--dark{background:var(--ink);color:#F7F5F0;}
.btn--dark:hover{background:#22262a;box-shadow:var(--shadow-2);transform:translateY(-2px);}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}
.link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;position:relative;
}
.link-arrow::after{
  content:"";
  position:absolute;left:0;bottom:-3px;height:2px;width:0;background:var(--accent);
  transition:width .2s var(--ease);
}
.link-arrow:hover::after{width:100%;}
.link-arrow svg{transition:transform .2s var(--ease);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ===== 胶囊标签 ===== */
.pill{
  display:inline-flex;align-items:center;
  height:26px;padding:0 12px;border-radius:var(--radius-pill);
  font-size:13px;font-weight:500;
  border:1px solid rgba(18,20,22,.16);
  color:var(--ink-soft);background:transparent;
  white-space:nowrap;
}
.pill--accent{background:var(--accent-soft);border-color:rgba(200,241,53,.6);color:var(--accent-ink);}
.pill--solid{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);}

/* ===== 导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:rgba(247,245,240,.62);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid rgba(18,20,22,.08);
  box-shadow:var(--shadow-nav);
  transition:background-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,240,.94);
  box-shadow:0 6px 24px rgba(18,20,22,.09);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  height:76px;
  transition:height .24s var(--ease);
}
.site-header.is-scrolled .nav-inner{height:64px;}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--ink);
  flex-shrink:0;
}
.brand-dot{
  width:8px;height:8px;border-radius:2px;background:var(--accent);display:inline-block;
  box-shadow:0 0 0 3px rgba(200,241,53,.25);
}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  position:relative;
  padding:8px 12px;
  font-size:15px;
  color:var(--ink-soft);
  border-radius:8px;
  transition:color .2s var(--ease),background-color .2s var(--ease);
  white-space:nowrap;
}
.nav-links a:hover{color:var(--ink);background:rgba(18,20,22,.05);}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-links a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;background:var(--accent);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.icon-btn{
  width:38px;height:38px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-soft);
  border:1px solid transparent;
  transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);
}
.icon-btn:hover{color:var(--ink);background:rgba(18,20,22,.05);border-color:rgba(18,20,22,.1);}
.burger{
  display:none;width:40px;height:40px;border-radius:10px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.burger i,.burger::before,.burger::after{
  content:"";display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.burger.is-open i{opacity:0;}
.burger.is-open::before{transform:translateY(7px) rotate(45deg);}
.burger.is-open::after{transform:translateY(-7px) rotate(-45deg);}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:70;
  background:var(--bg-alt);
  padding:96px 24px 120px;
  transform:translateY(-12px);
  opacity:0;pointer-events:none;
  transition:opacity .24s var(--ease),transform .24s var(--ease);
  overflow-y:auto;
}
.drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.drawer nav{display:flex;flex-direction:column;}
.drawer nav a{
  padding:18px 0;font-size:17px;border-bottom:1px solid var(--line);color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer nav a.is-active{font-weight:700;}
.drawer nav a.is-active::after{content:"";width:8px;height:8px;border-radius:2px;background:var(--accent);}
.drawer-foot{
  position:fixed;left:0;right:0;bottom:0;padding:14px 24px calc(14px + env(safe-area-inset-bottom));
  background:var(--bg-alt);border-top:1px solid var(--line);
}
.drawer-foot .btn{width:100%;}
@media (min-width:769px){ .drawer{display:none;} }

/* ===== 页头 ===== */
.page-hero{
  padding:168px 0 72px;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(1100px 420px at 88% -12%, rgba(200,241,53,.20), transparent 70%),
    var(--bg);
}
.page-hero h1{
  font-size:clamp(34px,5vw,64px);
  max-width:20ch;
}
.page-hero .lede{margin-top:22px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:16px 40px;margin-top:44px;padding-top:26px;border-top:1px solid var(--line);
}
.hero-meta div{display:flex;flex-direction:column;gap:4px;}
.hero-meta .num{font-size:26px;font-weight:700;letter-spacing:-.01em;font-variant-numeric:tabular-nums;}
.hero-meta .lbl{font-size:13px;color:var(--ink-soft);}
@media (max-width:768px){ .page-hero{padding:132px 0 52px;} }

/* ===== 锚点索引 ===== */
.anchor-bar{
  position:sticky;top:64px;z-index:40;
  background:rgba(247,245,240,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.anchor-bar .container{display:flex;gap:6px;overflow-x:auto;padding-top:12px;padding-bottom:12px;}
.anchor-bar a{
  font-size:14px;color:var(--ink-soft);padding:6px 14px;border-radius:var(--radius-pill);
  border:1px solid transparent;white-space:nowrap;transition:.2s var(--ease);
}
.anchor-bar a:hover{color:var(--ink);background:var(--bg-alt);border-color:var(--line);}

/* ===== 大图展示 ===== */
.showcase{background:var(--bg);}
.wide-figure{margin-bottom:64px;}
.wide-figure:last-child{margin-bottom:0;}
.wide-figure img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-card);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.wide-figure figcaption{
  margin-top:14px;font-size:13px;line-height:1.7;color:var(--ink-soft);
  display:flex;gap:10px;
}
.wide-figure figcaption::before{
  content:"";flex:0 0 22px;height:2px;background:var(--accent);margin-top:10px;border-radius:2px;
}
@media (max-width:768px){
  .wide-figure{margin-bottom:44px;}
  .wide-figure img{aspect-ratio:4/3;}
}

/* ===== 折叠说明 ===== */
.accordion{display:flex;flex-direction:column;gap:12px;}
.acc-item{
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.acc-item:hover{box-shadow:var(--shadow-1);}
.acc-item.is-open{
  border-color:rgba(18,20,22,.18);
  box-shadow:var(--shadow-2);
  border-left:2px solid var(--accent);
}
.acc-head{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 22px;text-align:left;font-size:17px;font-weight:600;line-height:1.5;
}
.acc-head .idx{
  font-size:13px;color:var(--ink-soft);font-variant-numeric:tabular-nums;margin-right:14px;font-weight:500;
}
.acc-ico{
  position:relative;flex:0 0 18px;height:18px;
}
.acc-ico::before,.acc-ico::after{
  content:"";position:absolute;background:var(--ink-soft);border-radius:2px;
  transition:transform .24s var(--ease),background-color .24s var(--ease);
}
.acc-ico::before{left:0;top:8px;width:18px;height:2px;}
.acc-ico::after{left:8px;top:0;width:2px;height:18px;}
.acc-item.is-open .acc-ico::after{transform:scaleY(0);}
.acc-item.is-open .acc-ico::before{background:var(--ink);}
.acc-panel{
  max-height:0;overflow:hidden;
  transition:max-height .32s var(--ease);
}
.acc-body{padding:0 22px 24px;color:var(--ink-soft);}
.acc-body p{font-size:16px;line-height:1.85;}
.acc-body p + p{margin-top:12px;}
.acc-body ul{display:flex;flex-direction:column;gap:10px;margin-top:14px;}
.acc-body li{
  position:relative;padding-left:18px;font-size:16px;line-height:1.8;color:var(--ink-soft);
}
.acc-body li::before{
  content:"";position:absolute;left:0;top:12px;width:6px;height:6px;background:var(--accent);border-radius:1px;
}

/* ===== 步骤 ===== */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step{
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px 26px;
  display:flex;flex-direction:column;gap:14px;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.step .no{
  font-size:13px;letter-spacing:.12em;color:var(--ink-soft);font-variant-numeric:tabular-nums;
}
.step h3{font-size:21px;}
.step p{font-size:16px;color:var(--ink-soft);}
.step .tagline{
  margin-top:auto;font-size:13px;color:var(--ink-soft);padding-top:16px;border-top:1px solid var(--line);
}
@media (max-width:900px){ .steps{grid-template-columns:1fr;} }

/* ===== 清单 + 图文块 ===== */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:start;}
@media (max-width:1024px){ .split{grid-template-columns:1fr;gap:40px;} }
.check-list{display:flex;flex-direction:column;}
.check-list li{
  display:flex;gap:16px;padding:22px 0;border-bottom:1px solid var(--line);
}
.check-list li:first-child{border-top:1px solid var(--line);}
.check-mark{
  flex:0 0 22px;height:22px;border-radius:6px;background:var(--accent);color:var(--accent-ink);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;margin-top:4px;
}
.check-list strong{display:block;font-size:17px;font-weight:600;margin-bottom:6px;}
.check-list span{font-size:16px;color:var(--ink-soft);line-height:1.8;}
.figure-card{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:16px;position:sticky;top:132px;
}
.figure-card img{aspect-ratio:4/3;object-fit:cover;width:100%;}
.figure-card .cap{padding:18px 6px 6px;font-size:14px;color:var(--ink-soft);line-height:1.75;}
@media (max-width:1024px){ .figure-card{position:static;} }

/* ===== 数据带 ===== */
.band{
  background:var(--dark);color:#F7F5F0;border-radius:var(--radius-card);
  padding:44px 40px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
}
.band .num{font-size:clamp(28px,3.6vw,44px);font-weight:800;color:var(--accent);line-height:1.1;font-variant-numeric:tabular-nums;}
.band .lbl{font-size:13px;color:rgba(247,245,240,.66);margin-top:8px;line-height:1.6;}
@media (max-width:900px){ .band{grid-template-columns:repeat(2,1fr);padding:32px 24px;gap:24px;} }
@media (max-width:480px){ .band{grid-template-columns:1fr;} }

/* ===== FAQ ===== */
.faq{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  transition:box-shadow .2s var(--ease);
}
.faq-item.is-open{border-left:2px solid var(--accent);box-shadow:var(--shadow-2);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;text-align:left;font-size:17px;font-weight:600;line-height:1.5;
}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease);}
.faq-a p{padding:0 22px 22px;color:var(--ink-soft);font-size:16px;line-height:1.85;}

/* ===== CTA + 表单 ===== */
.cta-block{
  background:var(--dark);color:#F7F5F0;
  border-radius:18px;
  padding:64px 56px;
  display:grid;grid-template-columns:1fr 1fr;gap:56px;
  position:relative;overflow:hidden;
}
.cta-block::after{
  content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle, rgba(200,241,53,.22), transparent 65%);
  pointer-events:none;
}
.cta-block h2{color:#F7F5F0;}
.cta-block .lede{color:rgba(247,245,240,.72);font-size:17px;margin-top:18px;}
.cta-block .small{color:rgba(247,245,240,.55);margin-top:26px;}
.form-grid{display:grid;gap:16px;position:relative;z-index:2;}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:13px;color:rgba(247,245,240,.7);}
.field input,.field textarea{
  width:100%;background:var(--bg-alt);color:var(--ink);
  border:1px solid transparent;border-radius:12px;
  padding:13px 16px;font-size:15px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input{height:48px;}
.field textarea{min-height:110px;resize:vertical;line-height:1.7;}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(200,241,53,.28);}
.field.has-error input,.field.has-error textarea{border-color:var(--state-error);}
.field .err{font-size:13px;color:#F0A79C;display:none;}
.field.has-error .err{display:block;}
.form-status{font-size:14px;min-height:22px;display:none;}
.form-status.is-ok{display:block;color:#B7E38F;}
.form-status.is-err{display:block;color:#F0A79C;}
.form-status.is-loading{display:block;color:rgba(247,245,240,.7);}
.form-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;}
@media (max-width:1024px){
  .cta-block{grid-template-columns:1fr;gap:36px;padding:48px 28px;}
}

/* ===== 页脚 ===== */
.site-footer{background:var(--dark);color:rgba(247,245,240,.72);padding:72px 0 0;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .brand{color:#F7F5F0;}
.footer-brand p{font-size:14px;line-height:1.8;margin-top:16px;max-width:34ch;color:rgba(247,245,240,.6);}
.footer-col h4{
  font-size:13px;letter-spacing:.12em;color:rgba(247,245,240,.5);font-weight:600;margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:15px;color:rgba(247,245,240,.78);transition:color .2s var(--ease);}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(247,245,240,.12);
  padding:22px 0 30px;
  display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(247,245,240,.5);
}
.footer-bottom .domain{font-variant-numeric:tabular-nums;}
@media (max-width:1024px){ .footer-grid{grid-template-columns:1fr 1fr;} }
@media (max-width:640px){
  .site-footer{padding-top:48px;}
  .footer-grid{grid-template-columns:1fr;gap:8px;}
  .footer-col{border-bottom:1px solid rgba(247,245,240,.12);}
  .footer-col h4{margin:18px 0 12px;}
  .footer-col ul{padding-bottom:18px;}
}

/* ===== 浮动 CTA ===== */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:60;
  display:flex;flex-direction:column;align-items:flex-end;gap:8px;
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:opacity .28s var(--ease),transform .28s var(--ease);
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta .hint{font-size:12px;color:var(--ink-soft);background:rgba(247,245,240,.9);padding:4px 10px;border-radius:var(--radius-pill);}
@media (max-width:768px){
  .float-cta{
    left:0;right:0;bottom:0;align-items:stretch;
    padding:0 16px calc(8px + env(safe-area-inset-bottom));
    background:rgba(247,245,240,.94);
    border-top:1px solid var(--line);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  }
  .float-cta .hint{display:none;}
  .float-cta .btn{width:100%;height:48px;margin:6px 0;}
}

/* ===== 入场动效 ===== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@keyframes floaty{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(7px);}
}
.float-arrow{animation:floaty 2.6s ease-in-out infinite;}

/* ===== 锚点高亮 ===== */
@keyframes anchorFlash{
  0%{background:var(--accent-soft);}
  100%{background:transparent;}
}
.anchor-flash{animation:anchorFlash .6s var(--ease);border-radius:6px;}

@media (max-width:1024px){
  .nav-links{display:none;}
  .burger{display:inline-flex;}
  .nav-actions .btn--primary{display:none;}
}
@media (max-width:520px){
  body{font-size:16px;}
  .container{padding:0 18px;}
  .hero-actions .btn{flex:1 1 auto;}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}