/* roulang page: index */
:root{
  --bg:#F5F6F3;
  --surface:#FFFFFF;
  --surface-alt:#EDEFE9;
  --ink:#12161A;
  --ink-2:#5C646C;
  --line:#E3E6E0;
  --dark:#0C0F12;
  --dark-2:#14181D;
  --dark-line:#262C33;
  --dark-ink:#E8EBE6;
  --dark-ink-2:#9AA3A0;
  --neon:#14E39A;
  --neon-dim:#0E9E6E;
  --orange:#FF5C2B;
  --r:4px;
  --sh:0 1px 2px rgba(12,15,18,.05);
  --sh-hover:0 12px 28px rgba(12,15,18,.10);
  --container:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:system-ui,-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,figure,blockquote,ol,ul{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--neon-dim);text-decoration:none;transition:color .18s var(--ease);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--neon-dim);outline-offset:2px;}
[id]{scroll-margin-top:84px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.container-wide{max-width:1280px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:var(--dark);
}
.site-header::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:40%;
  background:linear-gradient(90deg,var(--neon),rgba(20,227,154,0));
  pointer-events:none;
}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;height:64px;}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;letter-spacing:-.01em;flex:0 0 auto;}
.brand:hover{color:#fff;}
.brand-mark{
  width:22px;height:22px;flex:0 0 auto;position:relative;
  border:1.5px solid var(--neon);border-radius:3px;
  background:linear-gradient(135deg,var(--neon) 0 42%,transparent 42%);
}
.brand-mark::after{
  content:"";position:absolute;right:-3px;bottom:-3px;width:6px;height:6px;border-radius:50%;
  background:var(--neon);box-shadow:0 0 8px rgba(20,227,154,.8);
}
.nav-menu{display:flex;align-items:center;gap:26px;}
.nav-menu a{
  position:relative;color:#B9C1BD;font-size:15px;font-weight:500;padding:8px 0;white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:100%;bottom:2px;height:2px;
  background:var(--neon);transition:right .18s var(--ease);
}
.nav-menu a:hover{color:#fff;}
.nav-menu a:hover::after{right:0;}
.nav-menu a.is-active{color:#fff;text-shadow:0 0 10px rgba(20,227,154,.35);}
.nav-menu a.is-active::after{right:0;}
.nav-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:40px;border:1px solid var(--dark-line);border-radius:var(--r);
}
.nav-toggle span{display:block;width:18px;height:2px;margin:0 auto;background:#E8EBE6;transition:transform .2s var(--ease),opacity .2s var(--ease);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

.drawer{
  position:fixed;inset:0;z-index:200;background:var(--dark);
  padding:80px 24px calc(32px + env(safe-area-inset-bottom,0px));
  display:flex;flex-direction:column;overflow-y:auto;
  transform:translateX(100%);transition:transform .3s var(--ease);
}
.drawer.is-open{transform:translateX(0);}
.drawer-nav a{
  display:flex;align-items:center;gap:16px;color:#E8EBE6;font-size:18px;font-weight:600;
  padding:18px 0;border-bottom:1px solid var(--dark-line);
}
.drawer-nav a .d-num{font-size:13px;font-weight:700;color:var(--neon);min-width:22px;}
.drawer-nav a.is-active{color:var(--neon);}
.drawer-cta{margin-top:28px;width:100%;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--r);
  font-size:15px;font-weight:700;border:1px solid transparent;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),filter .18s var(--ease);
}
.btn-neon{background:var(--neon);color:#06120C;}
.btn-neon:hover{filter:brightness(1.08);transform:translateY(1px);box-shadow:0 8px 20px rgba(20,227,154,.22);}
.btn-primary{background:var(--neon-dim);color:#fff;}
.btn-primary:hover{background:#0B8A60;transform:translateY(-1px);box-shadow:0 10px 22px rgba(14,158,110,.22);}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn-outline:hover{background:var(--ink);color:#E8EBE6;}
.btn-ghost-dark{border-color:var(--dark-line);color:#E8EBE6;background:transparent;}
.btn-ghost-dark:hover{border-color:var(--neon);color:var(--neon);}
.btn-outline-neon{border-color:var(--neon);color:var(--neon);background:transparent;}
.btn-outline-neon:hover{background:var(--neon);color:#06120C;}
.btn:active{transform:translateY(1px);}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--neon-dim);font-weight:700;font-size:15px;}
.btn-text .arrow{transition:transform .18s var(--ease);}
.btn-text:hover .arrow{transform:translateX(3px);}

/* ---------- 通用 ---------- */
.section{padding:100px 0;}
.section-tight{padding:72px 0;}
.section-alt{background:var(--surface);}
.section-dark{background:var(--dark);color:var(--dark-ink);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:40px;flex-wrap:wrap;
}
.section-tag{
  display:inline-block;font-size:13px;font-weight:700;color:var(--neon-dim);
  letter-spacing:.06em;margin-bottom:12px;
}
.section-head h2{font-size:clamp(26px,3vw,36px);font-weight:800;line-height:1.2;letter-spacing:-.02em;}
.section-head p{color:var(--ink-2);font-size:16px;max-width:620px;margin-top:12px;}
.section-dark .section-tag{color:var(--neon);}
.section-dark .section-head p{color:var(--dark-ink-2);}

.badge{
  display:inline-block;border-radius:2px;padding:2px 9px;
  font-size:13px;font-weight:600;line-height:1.7;
  background:rgba(14,158,110,.08);border:1px solid rgba(14,158,110,.35);color:var(--neon-dim);
}
.badge-orange{background:rgba(255,92,43,.08);border-color:rgba(255,92,43,.4);color:var(--orange);}

/* ---------- Hero ---------- */
.hero{
  position:relative;background:var(--surface);
  padding:84px 0 92px;border-bottom:1px solid var(--line);overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(12,15,18,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(12,15,18,.04) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.65),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.65),transparent 72%);
}
.hero .container{position:relative;z-index:1;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--neon-dim);letter-spacing:.06em;
  padding:5px 12px;border:1px solid rgba(14,158,110,.35);border-radius:2px;
  background:rgba(14,158,110,.06);margin-bottom:22px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--neon-dim);}
.hero-title{
  font-size:clamp(34px,5vw,58px);font-weight:800;line-height:1.12;
  letter-spacing:-.02em;max-width:15em;
}
.hero-sub{
  margin-top:22px;font-size:18px;line-height:1.8;color:var(--ink-2);max-width:34em;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-metrics{display:flex;flex-wrap:wrap;margin-top:48px;border-top:1px solid var(--line);}
.hero-metrics li{
  flex:1 1 150px;position:relative;padding:18px 24px 0 0;min-width:140px;
}
.hero-metrics li::before{
  content:"";position:absolute;top:-1px;left:0;width:34px;height:2px;background:var(--neon-dim);
}
.m-label{display:block;font-size:13px;font-weight:500;color:var(--ink-2);}
.m-desc{display:block;font-size:15px;font-weight:700;margin-top:2px;}

.hero-visual{position:relative;padding:0 16px 20px 0;}
.hero-frame{
  position:relative;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:var(--surface-alt);
  aspect-ratio:4/3;
}
.hero-frame img{width:100%;height:100%;object-fit:cover;}
.hero-frame::before{
  content:"";position:absolute;left:0;top:0;width:14px;height:14px;z-index:2;
  border-left:2px solid var(--neon);border-top:2px solid var(--neon);
}
.hero-thumb{
  position:absolute;right:-4px;bottom:-4px;width:44%;
  border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  background:var(--surface);box-shadow:0 12px 28px rgba(12,15,18,.12);
  aspect-ratio:1/1;
}
.hero-thumb img{width:100%;height:100%;object-fit:cover;}

/* ---------- 卖点 ---------- */
.sticky-title{position:sticky;top:110px;}
@media (max-width:1024px){.sticky-title{position:static;}}
.sticky-title h2{font-size:clamp(26px,3vw,36px);font-weight:800;line-height:1.2;letter-spacing:-.02em;}
.sticky-title p{margin-top:16px;color:var(--ink-2);font-size:16px;max-width:26em;}
.feature-list{margin-top:8px;}
.feature-item{
  position:relative;display:flex;gap:22px;padding:28px 0 28px 0;
  border-top:1px solid var(--line);
  transition:padding-left .22s var(--ease);
}
.feature-item:last-child{border-bottom:1px solid var(--line);}
.feature-item::before{
  content:"";position:absolute;left:-1px;top:0;bottom:0;width:3px;background:var(--neon-dim);
  transform:scaleY(0);transform-origin:top;transition:transform .22s var(--ease);
}
.feature-item:hover{padding-left:20px;}
.feature-item:hover::before{transform:scaleY(1);}
.f-num{
  flex:0 0 auto;min-width:52px;font-size:28px;font-weight:800;line-height:1.1;
  color:var(--neon-dim);letter-spacing:-.02em;transition:color .22s var(--ease);
}
.f-body h3{font-size:20px;font-weight:700;line-height:1.4;}
.f-body p{margin-top:8px;color:var(--ink-2);font-size:15px;max-width:56em;}

/* ---------- 演示 ---------- */
.demo-tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px;}
.demo-tabs .tab{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;
  border:1px solid var(--line);border-radius:var(--r);background:var(--surface);
  color:var(--ink-2);font-size:14px;font-weight:600;
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease);
}
.demo-tabs .tab:hover{border-color:var(--neon-dim);color:var(--neon-dim);background:rgba(14,158,110,.05);}
.demo-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;height:100%;transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.demo-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:var(--neon-dim);}
.demo-shot{aspect-ratio:16/10;background:var(--surface-alt);overflow:hidden;}
.demo-shot img{width:100%;height:100%;object-fit:cover;}
.demo-card figcaption{
  padding:16px 18px;font-size:14px;color:var(--ink-2);border-top:1px solid var(--line);
}

/* ---------- 证据 ---------- */
.proof-quote{
  border-left:4px solid var(--neon-dim);padding:4px 0 4px 28px;
}
.proof-quote p{font-size:20px;line-height:1.7;font-weight:500;max-width:30em;}
.proof-quote cite{display:block;margin-top:18px;font-size:13px;color:var(--ink-2);font-style:normal;}
.proof-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;}
.proof-cell{background:var(--surface);padding:26px 22px;}
.p-value{display:block;font-size:28px;font-weight:800;line-height:1.2;letter-spacing:-.02em;color:var(--ink);}
.p-label{display:block;margin-top:8px;font-size:13px;color:var(--ink-2);}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.price-card{
  position:relative;display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  padding:32px 26px;transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.price-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:var(--neon-dim);}
.price-card h3{font-size:20px;font-weight:800;letter-spacing:-.01em;}
.price-desc{margin-top:10px;font-size:14px;color:var(--ink-2);min-height:44px;}
.price-features{margin-top:22px;border-top:1px solid var(--line);}
.price-features li{
  position:relative;padding:13px 0 13px 22px;font-size:14px;color:var(--ink-2);
  border-bottom:1px solid var(--line);
}
.price-features li::before{
  content:"";position:absolute;left:0;top:22px;width:8px;height:8px;
  border-left:2px solid var(--neon-dim);border-bottom:2px solid var(--neon-dim);
  transform:rotate(-45deg);
}
.price-card .btn{margin-top:26px;width:100%;}
.price-card.featured{background:var(--dark);border-color:var(--neon);color:var(--dark-ink);box-shadow:none;}
.price-card.featured:hover{border-color:var(--neon);box-shadow:0 12px 28px rgba(12,15,18,.28);}
.price-card.featured .price-desc{color:var(--dark-ink-2);}
.price-card.featured .price-features{border-color:var(--dark-line);}
.price-card.featured .price-features li{border-color:var(--dark-line);color:var(--dark-ink-2);}
.price-card.featured .price-features li::before{border-color:var(--neon);}
.price-badge{
  position:absolute;top:16px;right:16px;border-radius:2px;
  background:var(--orange);color:#fff;font-size:12px;font-weight:700;
  padding:2px 9px;line-height:1.7;
}

/* ---------- 资讯 ---------- */
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;position:relative;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.news-card::before{
  content:"";position:absolute;left:0;top:0;width:16px;height:3px;background:var(--neon-dim);
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);z-index:2;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:var(--neon-dim);}
.news-card:hover::before{transform:scaleX(1);}
.news-thumb{display:block;aspect-ratio:16/9;background:var(--surface-alt);overflow:hidden;}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.news-card:hover .news-thumb img{transform:scale(1.02);}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.news-body h3{margin-top:12px;font-size:17px;font-weight:700;line-height:1.5;}
.news-body h3 a{color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-body h3 a:hover{color:var(--neon-dim);}
.news-body p{
  margin-top:10px;font-size:14px;color:var(--ink-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  gap:12px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-2);margin-top:18px;
}
.news-meta a{font-weight:700;}
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:64px 24px;border:1px dashed var(--line);border-radius:var(--r);background:var(--surface);
  text-align:center;
}
.empty-mark{
  width:22px;height:22px;border:2px solid var(--neon-dim);border-radius:3px;
  background:linear-gradient(135deg,var(--neon-dim) 0 42%,transparent 42%);
}
.empty-state p{font-size:14px;color:var(--ink-2);}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line);max-width:900px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;text-align:left;font-size:17px;font-weight:700;color:var(--ink);
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--neon-dim);}
.faq-icon{
  flex:0 0 auto;font-size:22px;font-weight:400;line-height:1;color:var(--ink-2);
  transition:transform .22s var(--ease),color .22s var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--neon-dim);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a p{padding:0 0 24px;font-size:15px;line-height:1.8;color:var(--ink-2);max-width:760px;}

/* ---------- 转化 ---------- */
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start;}
.contact-copy h2{font-size:clamp(26px,3vw,36px);font-weight:800;line-height:1.2;letter-spacing:-.02em;color:#fff;}
.contact-copy p{margin-top:18px;font-size:16px;color:var(--dark-ink-2);max-width:28em;}
.contact-list{margin-top:32px;border-top:1px solid var(--dark-line);}
.contact-list li{
  display:flex;justify-content:space-between;gap:16px;padding:14px 0;
  border-bottom:1px solid var(--dark-line);font-size:14px;color:var(--dark-ink-2);
}
.contact-list li span:last-child{color:var(--dark-ink);font-weight:600;}
.form-card{
  background:var(--dark-2);border:1px solid var(--dark-line);border-radius:var(--r);padding:28px;
}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:14px;font-weight:600;color:var(--dark-ink);margin-bottom:8px;}
.form-row .req{color:var(--orange);margin-left:4px;}
.form-row input,.form-row select,.form-row textarea{
  width:100%;height:44px;padding:0 14px;border-radius:var(--r);
  background:var(--dark);border:1px solid var(--dark-line);color:var(--dark-ink);
  font-size:15px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.form-row textarea{height:auto;min-height:112px;padding:12px 14px;resize:vertical;line-height:1.7;}
.form-row select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--dark-ink-2) 50%),linear-gradient(135deg,var(--dark-ink-2) 50%,transparent 50%);background-position:calc(100% - 20px) 19px,calc(100% - 14px) 19px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.form-row input::placeholder,.form-row textarea::placeholder{color:#5A6462;}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  outline:none;border-color:var(--neon);box-shadow:0 0 0 2px rgba(20,227,154,.35);
}
.form-note{margin-top:14px;font-size:13px;color:var(--dark-ink-2);line-height:1.7;}
.form-note a{color:var(--neon);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--dark-ink-2);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:17px;}
.footer-brand .brand-mark{border-color:var(--neon);}
.footer-about{margin-top:16px;font-size:14px;line-height:1.8;color:var(--dark-ink-2);max-width:30em;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{color:var(--dark-ink-2);font-size:14px;}
.footer-col ul li a:hover{color:var(--neon);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--dark-line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--dark-ink-2);
}
.footer-bottom a{color:var(--dark-ink-2);}
.footer-bottom a:hover{color:var(--neon);}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:150;
  display:inline-flex;align-items:center;gap:8px;height:48px;padding:0 22px;
  border-radius:999px;background:rgba(12,15,18,.94);
  border:1px solid var(--neon);color:var(--neon);font-size:15px;font-weight:700;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);animation:pulse 2.4s ease-in-out infinite;}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(20,227,154,.35);}50%{box-shadow:0 0 0 10px rgba(20,227,154,.06);}}
.float-cta:hover{background:var(--neon);color:#06120C;}

/* ---------- 入场 ---------- */
.js-reveal{opacity:0;transform:translateY(10px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.js-reveal.is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-menu{display:none;}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:72px 0;}
  .hero{padding:64px 0 72px;}
  .hero-visual{margin-top:48px;padding-right:0;}
  .contact-grid{grid-template-columns:1fr;gap:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .price-grid{grid-template-columns:1fr;}
  .price-card.featured{order:-1;}
}
@media (min-width:1025px){
  .drawer{display:none;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .hero-title{font-size:clamp(30px,7vw,40px);}
  .hero-sub{font-size:16px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:28px;}
  .feature-item{gap:16px;}
  .f-num{min-width:40px;font-size:24px;}
  .proof-quote p{font-size:18px;}
  .proof-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .float-cta{
    right:0;left:0;bottom:0;width:100%;height:56px;border-radius:0;
    justify-content:center;
    padding-bottom:env(safe-area-inset-bottom,0px);
  }
  .form-card{padding:22px;}
}
@media (max-width:520px){
  .hero-metrics li{flex:1 1 100%;padding-right:0;}
  .news-meta{flex-direction:column;align-items:flex-start;gap:6px;}
  .price-badge{top:14px;right:14px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .js-reveal{opacity:1;transform:none;transition:none;}
  .float-cta.is-visible{animation:none;}
  *{transition-duration:.01ms !important;}
}

/* roulang page: article */
:root{
  --bg:#F5F6F3;
  --card:#FFFFFF;
  --sep:#EDEFE9;
  --dark:#0C0F12;
  --dark-2:#14181D;
  --dark-text:#E8EBE6;
  --dark-muted:#9AA3A0;
  --accent:#14E39A;
  --accent-ink:#0E9E6E;
  --orange:#FF5C2B;
  --text:#12161A;
  --muted:#5C646C;
  --border:#E3E6E0;
  --border-dark:#262C33;
  --radius:4px;
  --shadow:0 1px 2px rgba(12,15,18,.05);
  --shadow-hover:0 12px 28px rgba(12,15,18,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--accent-ink);text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);}
a:hover{color:var(--orange);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;}
p{margin:0 0 1.1em;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}

/* ---------- 顶栏导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--dark);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  height:1px;
  width:40%;
  background:linear-gradient(90deg,var(--accent),rgba(20,227,154,0));
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:64px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
  flex:0 0 auto;
  white-space:nowrap;
}
.brand:hover{color:#fff;}
.brand-mark{
  position:relative;
  display:block;
  width:18px;
  height:18px;
  background:var(--accent);
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
  flex:0 0 auto;
}
.brand-mark::after{
  content:"";
  position:absolute;
  left:4px;
  top:4px;
  width:6px;
  height:6px;
  background:#06120C;
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:22px;
  margin-left:auto;
  counter-reset:navc;
}
.nav-menu a{
  position:relative;
  padding:6px 0;
  color:#B9C1BD;
  font-size:15px;
  font-weight:500;
  white-space:nowrap;
  transition:color .18s var(--ease);
}
.nav-menu a:hover{color:#fff;}
.nav-menu a:hover::after,
.nav-menu a.is-active::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:var(--accent);
}
.nav-menu a.is-active{
  color:#fff;
  text-shadow:0 0 12px rgba(20,227,154,.35);
}
.header-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;
  margin-left:auto;
  width:40px;
  height:40px;
  padding:0;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
  background:transparent;
  border:1px solid var(--border-dark);
  border-radius:var(--radius);
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:16px;
  height:2px;
  background:var(--dark-text);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-size:15px;
  font-weight:700;
  line-height:1;
  cursor:pointer;
  transition:transform .18s var(--ease),background-color .18s var(--ease),
             color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--accent);color:#06120C;}
.btn-primary:hover{background:#2ff0ab;color:#06120C;transform:translateY(1px);}
.btn-ghost{border-color:var(--border-dark);background:transparent;color:var(--dark-text);}
.btn-ghost:hover{background:var(--dark-2);color:#fff;border-color:var(--accent);}
.btn-outline{border-color:var(--border);background:#fff;color:var(--text);}
.btn-outline:hover{border-color:var(--accent-ink);color:var(--accent-ink);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;
  padding:30px 0 40px;
  background:
    linear-gradient(rgba(255,255,255,.94),rgba(255,255,255,.97)),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  border-bottom:1px solid var(--border);
}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb a{color:var(--muted);}
.breadcrumb a:hover{color:var(--accent-ink);}
.breadcrumb .sep{color:#C3C8C2;}
.breadcrumb .current{
  color:var(--accent-ink);
  max-width:52ch;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.article-title{
  max-width:860px;
  margin:18px 0 0;
  font-size:clamp(28px,4vw,40px);
  font-weight:800;
  line-height:1.22;
  letter-spacing:-.02em;
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  margin-top:22px;
  padding-top:16px;
  border-top:1px solid var(--border);
  font-size:13px;
  font-weight:500;
  color:var(--muted);
}
.tag-badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border:1px solid rgba(20,227,154,.55);
  border-radius:2px;
  background:rgba(20,227,154,.10);
  color:var(--accent-ink);
  font-size:13px;
  font-weight:600;
}
.tag-badge--accent{
  border-color:rgba(255,92,43,.55);
  background:rgba(255,92,43,.10);
  color:var(--orange);
}

/* ---------- 文章主区 ---------- */
.article-main{padding:56px 0 80px;}
.article-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:40px;
  align-items:start;
}
.article-panel{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:38px 40px 32px;
}
.article-body{
  max-width:780px;
  font-size:17px;
  line-height:1.9;
  color:#1A1F24;
  word-wrap:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body h2{
  position:relative;
  margin:44px 0 16px;
  padding-left:16px;
  font-size:clamp(22px,2.4vw,28px);
  font-weight:800;
  line-height:1.3;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.32em;
  width:4px;
  height:20px;
  border-radius:1px;
  background:var(--accent-ink);
}
.article-body h3{
  position:relative;
  margin:32px 0 12px;
  padding-left:18px;
  font-size:19px;
  font-weight:700;
  line-height:1.4;
}
.article-body h3::before{
  content:"";
  position:absolute;
  left:0;
  top:.62em;
  width:8px;
  height:8px;
  border-radius:1px;
  background:var(--accent-ink);
}
.article-body h4{
  margin:24px 0 10px;
  font-size:17px;
  font-weight:700;
}
.article-body p{margin:0 0 1.1em;}
.article-body ul,
.article-body ol{
  margin:0 0 1.2em;
  padding-left:1.4em;
}
.article-body li{margin-bottom:.5em;}
.article-body li::marker{color:var(--accent-ink);}
.article-body blockquote{
  margin:24px 0;
  padding:18px 22px;
  border-left:4px solid var(--accent-ink);
  border-radius:0 var(--radius) var(--radius) 0;
  background:var(--sep);
  color:#2A3138;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  width:100%;
  margin:20px 0 10px;
  border-radius:var(--radius);
}
.article-body figure{margin:24px 0;}
.article-body figcaption{
  font-size:12px;
  color:var(--muted);
  text-align:center;
  line-height:1.6;
}
.article-body table{
  width:100%;
  margin:22px 0;
  border-collapse:collapse;
  font-size:15px;
  line-height:1.7;
}
.article-body th,
.article-body td{
  padding:10px 14px;
  border:1px solid var(--border);
  text-align:left;
  vertical-align:top;
}
.article-body th{
  background:var(--sep);
  font-weight:700;
  color:var(--text);
}
.article-body tbody tr:hover{background:#FAFBF8;}
.article-body a{
  color:var(--accent-ink);
  border-bottom:1px solid rgba(14,158,110,.35);
}
.article-body a:hover{
  color:var(--orange);
  border-bottom-color:var(--orange);
}
.article-body code{
  padding:2px 6px;
  border-radius:2px;
  background:var(--sep);
  font-size:.92em;
}
.article-body hr{
  margin:32px 0;
  border:0;
  border-top:1px solid var(--border);
}
.article-body::after{content:"";display:block;clear:both;}

.empty-state{
  padding:48px 0 32px;
  text-align:center;
}
.empty-icon{
  display:inline-block;
  width:14px;
  height:14px;
  margin-bottom:16px;
  background:var(--accent-ink);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);
}
.empty-state h2{
  margin:0 0 10px;
  padding:0;
  font-size:20px;
  font-weight:700;
}
.empty-state h2::before{display:none;}
.empty-state p{
  max-width:460px;
  margin:0 auto 20px;
  font-size:14px;
  color:var(--muted);
}

/* ---------- 侧栏 ---------- */
.sidebar{
  position:sticky;
  top:88px;
  display:grid;
  gap:20px;
}
.side-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:22px 20px;
}
.side-card h3{
  margin:0 0 14px;
  padding-bottom:12px;
  border-bottom:1px solid var(--border);
  font-size:16px;
  font-weight:700;
}
.toc-list{
  display:grid;
  gap:2px;
  margin:0;
  padding:0;
  list-style:none;
}
.toc-list a{
  display:block;
  padding:8px 10px;
  border-left:2px solid transparent;
  color:var(--muted);
  font-size:14px;
  line-height:1.6;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.toc-list a:hover{
  border-left-color:var(--accent);
  background:var(--sep);
  color:var(--accent-ink);
}
.side-links{
  display:grid;
  margin:0;
  padding:0;
  list-style:none;
}
.side-links li{border-bottom:1px solid var(--border);}
.side-links li:last-child{border-bottom:0;}
.side-links a{
  display:block;
  padding:12px 0;
  color:var(--text);
  font-size:14px;
  font-weight:600;
  transition:transform .18s var(--ease),color .18s var(--ease);
}
.side-links a:hover{color:var(--accent-ink);transform:translateX(4px);}
.side-cta{
  padding:24px 20px;
  border:1px solid var(--accent);
  border-radius:var(--radius);
  background:var(--dark);
  color:var(--dark-text);
  box-shadow:inset 0 0 32px rgba(20,227,154,.08);
}
.side-cta h3{
  margin:0 0 10px;
  font-size:17px;
  font-weight:800;
  color:#fff;
}
.side-cta p{
  margin:0 0 18px;
  font-size:13px;
  line-height:1.75;
  color:var(--dark-muted);
}

/* ---------- 底部导航 / 延伸阅读 ---------- */
.post-nav{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
  margin-top:36px;
}
.post-nav-item{
  display:block;
  padding:18px 20px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--card);
  box-shadow:var(--shadow);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.post-nav-item:hover{
  transform:translateY(-3px);
  border-color:var(--accent-ink);
  box-shadow:var(--shadow-hover);
}
.post-nav-item .label{
  display:block;
  margin-bottom:6px;
  font-size:13px;
  color:var(--muted);
}
.post-nav-item .title{
  display:block;
  font-size:16px;
  font-weight:700;
  color:var(--text);
}
.post-nav-item:hover .title{color:var(--accent-ink);}

.section{padding:72px 0;}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:36px;
}
.section-head h2{
  font-size:clamp(24px,3vw,32px);
  font-weight:800;
  line-height:1.2;
}
.section-head p{
  margin:8px 0 0;
  max-width:640px;
  font-size:14px;
  color:var(--muted);
}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:700;
  color:var(--accent-ink);
}
.text-link .arrow{transition:transform .18s var(--ease);}
.text-link:hover .arrow{transform:translateX(3px);}

.card-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.card{
  position:relative;
  display:flex;
  flex-direction:column;
  overflow:hidden;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--card);
  box-shadow:var(--shadow);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.card::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:0;
  height:16px;
  background:var(--accent-ink);
  transition:width .18s var(--ease);
  z-index:2;
}
.card:hover{
  transform:translateY(-3px);
  border-color:var(--accent-ink);
  box-shadow:var(--shadow-hover);
}
.card:hover::before{width:16px;}
.card-media{
  position:relative;
  aspect-ratio:16 / 9;
  overflow:hidden;
  background:var(--sep);
}
.card-media img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.card-body{
  display:flex;
  flex:1;
  flex-direction:column;
  padding:18px 20px 20px;
}
.card-body h3{
  margin:10px 0 8px;
  font-size:17px;
  font-weight:700;
  line-height:1.45;
}
.card-body h3 a{color:var(--text);}
.card-body h3 a:hover{color:var(--accent-ink);}
.card-body p{
  margin:0 0 16px;
  font-size:14px;
  line-height:1.75;
  color:var(--muted);
}
.card-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:auto;
  padding-top:14px;
  border-top:1px solid var(--border);
  font-size:13px;
  color:var(--muted);
}

/* ---------- 深色 CTA ---------- */
.cta-band{
  padding:72px 0;
  background:var(--dark);
  color:var(--dark-text);
}
.cta-band .cta-inner{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:32px;
  align-items:center;
}
.cta-band h2{
  font-size:clamp(24px,3vw,32px);
  font-weight:800;
  color:#fff;
}
.cta-band p{
  margin:12px 0 0;
  max-width:620px;
  font-size:15px;
  line-height:1.8;
  color:var(--dark-muted);
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}

/* ---------- 页脚 ---------- */
.site-footer{
  padding:64px 0 28px;
  background:var(--dark);
  border-top:1px solid var(--border-dark);
  color:var(--dark-muted);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:32px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
  color:#fff;
  font-size:17px;
  font-weight:800;
}
.footer-about{
  max-width:340px;
  margin:0;
  font-size:14px;
  line-height:1.85;
  color:var(--dark-muted);
}
.footer-col h4{
  margin:0 0 16px;
  font-size:15px;
  font-weight:700;
  color:#fff;
}
.footer-col ul{
  display:grid;
  gap:10px;
  margin:0;
  padding:0;
  list-style:none;
}
.footer-col a{
  font-size:14px;
  color:var(--dark-muted);
}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid var(--border-dark);
  font-size:13px;
  color:#7D8683;
}
.footer-bottom a{color:#7D8683;}
.footer-bottom a:hover{color:var(--accent);}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;
  right:28px;
  bottom:28px;
  z-index:90;
  display:inline-flex;
  align-items:center;
  gap:10px;
  height:48px;
  padding:0 22px;
  border:1px solid var(--accent);
  border-radius:999px;
  background:var(--dark);
  color:var(--accent);
  font-size:15px;
  font-weight:700;
  opacity:0;
  visibility:hidden;
  transform:translateY(12px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta::before{
  content:"";
  position:absolute;
  inset:-4px;
  border:1px solid var(--accent);
  border-radius:999px;
  opacity:.35;
  pointer-events:none;
  animation:breathe 2.4s ease-in-out infinite;
}
.float-cta:hover{color:#06120C;background:var(--accent);}
@keyframes breathe{
  0%,100%{opacity:.35;}
  50%{opacity:.6;}
}

/* ---------- 入场动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(10px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .nav-toggle{display:flex;}
  .header-cta{display:none;}
  .nav-menu{
    position:fixed;
    left:0;
    right:0;
    top:56px;
    bottom:0;
    z-index:99;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:16px 24px 40px;
    background:var(--dark);
    overflow-y:auto;
    transform:translateX(100%);
    transition:transform .3s var(--ease);
  }
  .nav-menu.is-open{transform:translateX(0);}
  .nav-menu a{
    display:flex;
    align-items:center;
    gap:14px;
    width:100%;
    padding:18px 0;
    border-bottom:1px solid var(--border-dark);
    font-size:18px;
    color:var(--dark-text);
  }
  .nav-menu a::before{
    content:counter(navc,decimal-leading-zero);
    counter-increment:navc;
    font-size:13px;
    font-weight:600;
    color:var(--accent);
  }
  .nav-menu a::after{display:none;}
  .nav-menu a.is-active{color:var(--accent);}
  .header-inner{height:56px;}
  .article-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .sidebar{position:static;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band .cta-inner{grid-template-columns:minmax(0,1fr);}
}
@media (max-width:640px){
  .container{padding:0 18px;}
  .page-head{padding:22px 0 30px;}
  .article-main{padding:32px 0 56px;}
  .article-panel{padding:24px 18px 20px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{margin:34px 0 14px;padding-left:14px;}
  .article-body h3{padding-left:16px;}
  .article-body table{font-size:14px;}
  .article-body th,
  .article-body td{padding:8px 10px;}
  .post-nav{grid-template-columns:minmax(0,1fr);}
  .section{padding:56px 0;}
  .card-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:0;}
  .footer-col{
    padding:18px 0;
    border-top:1px solid var(--border-dark);
  }
  .footer-col h4{margin-bottom:12px;}
  .section-head{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .float-cta{
    left:0;
    right:0;
    bottom:0;
    height:56px;
    justify-content:center;
    border-radius:0;
    border-left:0;
    border-right:0;
    padding-bottom:env(safe-area-inset-bottom);
  }
  .float-cta::before{display:none;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  .float-cta::before{animation:none;opacity:.45;}
  *{transition-duration:.001ms !important;}
}

/* roulang page: category1 */
:root{
  --bg:#F5F6F3;
  --bg-soft:#EDEFE9;
  --card:#FFFFFF;
  --ink:#12161A;
  --ink-2:#5C646C;
  --line:#E3E6E0;
  --dark:#0C0F12;
  --dark-2:#14181D;
  --dark-line:#262C33;
  --dark-text:#E8EBE6;
  --dark-text-2:#9AA3A0;
  --neon:#0E9E6E;
  --neon-bright:#14E39A;
  --orange:#FF5C2B;
  --r:4px;
  --r-lg:6px;
  --shadow:0 1px 2px rgba(12,15,18,.05);
  --shadow-hover:0 12px 28px rgba(12,15,18,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --gap:24px;
}

*,*::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:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:linear-gradient(to right,rgba(12,15,18,.035) 1px,transparent 1px),
                   linear-gradient(to bottom,rgba(12,15,18,.035) 1px,transparent 1px);
  background-size:48px 48px;
}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:800;color:var(--ink);letter-spacing:-0.01em;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a{color:var(--neon);text-decoration:none;transition:color .18s var(--ease),opacity .18s var(--ease);}
a:hover{color:var(--ink);}
img{max-width:100%;display:block;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;}
.num,.tabular{font-variant-numeric:tabular-nums;}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px;position:relative;z-index:1;}
.container-wide{max-width:1280px;}
.section{padding:104px 0;position:relative;z-index:1;}
.section-soft{background:var(--bg-soft);}
.section-dark{background:var(--dark);color:var(--dark-text);}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.08em;
  color:var(--neon);text-transform:uppercase;
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--neon);display:inline-block;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{font-size:clamp(26px,3vw,36px);line-height:1.2;}
.section-head p{margin-top:16px;color:var(--ink-2);font-size:16px;}
.section-dark .section-head h2{color:#fff;}
.section-dark .section-head p{color:var(--dark-text-2);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--dark);
  border-bottom:1px solid var(--dark-line);
  backdrop-filter:saturate(120%) blur(6px);
}
.site-header::after{
  content:"";position:absolute;left:0;bottom:-1px;height:1px;width:40%;
  background:linear-gradient(90deg,var(--neon-bright) 0%,rgba(20,227,154,0) 100%);
}
.header-inner{
  display:flex;align-items:center;gap:28px;
  height:64px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:#fff;}
.brand:hover{color:#fff;}
.brand-mark{
  width:22px;height:22px;flex:0 0 auto;position:relative;
  background:linear-gradient(135deg,var(--neon-bright) 0%,var(--neon) 100%);
  clip-path:polygon(0 0,100% 0,100% 62%,64% 100%,0 100%);
}
.brand-mark::after{
  content:"";position:absolute;right:1px;bottom:1px;width:5px;height:5px;background:#0C0F12;
}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-0.01em;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:24px;margin-left:8px;flex:1 1 auto;flex-wrap:wrap;}
.nav-menu a{
  position:relative;font-size:15px;color:#B9C1BD;padding:6px 0;font-weight:500;white-space:nowrap;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--neon-bright);transform:scaleX(0);transform-origin:left;
  transition:transform .18s var(--ease);
}
.nav-menu a:hover{color:#fff;}
.nav-menu a:hover::after{transform:scaleX(1);}
.nav-menu a.is-active{color:#fff;font-weight:700;text-shadow:0 0 12px rgba(20,227,154,.45);}
.nav-menu a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r);
  font-size:15px;font-weight:700;line-height:1;
  transition:all .18s var(--ease);white-space:nowrap;
}
.btn-primary{background:var(--neon-bright);color:#06120C;}
.btn-primary:hover{background:#2BF0AB;color:#06120C;transform:translateY(1px);}
.btn-primary:active{transform:translateY(2px);}
.btn-outline{border:1px solid var(--dark-line);color:var(--dark-text);background:transparent;}
.btn-outline:hover{background:var(--dark-2);color:#fff;border-color:var(--neon-bright);}
.btn-ghost{border:1px solid var(--line);color:var(--ink);background:#fff;}
.btn-ghost:hover{border-color:var(--neon);color:var(--neon);}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--neon);font-weight:700;font-size:15px;height:auto;padding:0;}
.btn-link i{transition:transform .18s var(--ease);}
.btn-link:hover{color:var(--ink);}
.btn-link:hover i{transform:translateX(3px);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;}

.nav-toggle{
  display:none;width:44px;height:40px;border-radius:var(--r);
  border:1px solid var(--dark-line);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--dark-text);transition:all .18s var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.drawer{
  position:fixed;inset:64px 0 0 0;z-index:70;
  background:var(--dark);
  padding:28px 24px 32px;
  display:flex;flex-direction:column;
  transform:translateY(-8px);opacity:0;pointer-events:none;
  transition:opacity .22s var(--ease),transform .22s var(--ease);
  overflow-y:auto;
}
.drawer.is-open{opacity:1;transform:none;pointer-events:auto;}
.drawer a{
  display:flex;align-items:center;gap:14px;
  padding:16px 4px;font-size:18px;color:var(--dark-text);font-weight:600;
  border-bottom:1px solid var(--dark-line);
}
.drawer a span.idx{font-size:13px;color:var(--neon);font-variant-numeric:tabular-nums;font-weight:700;}
.drawer a.is-active{color:#fff;}
.drawer a:hover{color:var(--neon-bright);}
.drawer-cta{margin-top:24px;}
.drawer-cta .btn{width:100%;}

/* ---------- Breadcrumb ---------- */
.crumb{
  padding:20px 0 0;
  font-size:13px;color:var(--ink-2);
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
}
.crumb a{color:var(--ink-2);}
.crumb a:hover{color:var(--neon);}
.crumb .sep{color:#C2C7C1;}
.crumb .current{color:var(--neon);font-weight:600;}

/* ---------- Page hero ---------- */
.page-hero{padding:28px 0 0;position:relative;z-index:1;}
.page-hero-inner{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:48px;align-items:center;
  padding:40px 0 0;
  min-height:280px;
}
.page-hero h1{
  font-size:clamp(34px,5vw,58px);
  line-height:1.12;letter-spacing:-0.02em;
  margin-bottom:18px;
}
.page-hero h1 em{font-style:normal;color:var(--neon);}
.hero-sub{font-size:17px;color:var(--ink-2);max-width:560px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;
}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:600;color:var(--neon);
  background:#fff;border:1px solid rgba(14,158,110,.35);
  border-radius:2px;padding:5px 10px;
}
.chip-accent{color:var(--orange);border-color:rgba(255,92,43,.4);}
.hero-visual{position:relative;}
.hero-visual .frame{
  border:1px solid var(--line);background:#fff;padding:8px;border-radius:var(--r);
  position:relative;
}
.hero-visual .frame::before{
  content:"";position:absolute;left:-1px;top:-1px;width:12px;height:12px;
  background:var(--neon);z-index:2;
}
.hero-visual img{
  width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;border-radius:2px;
}
.hero-badge{
  position:absolute;left:-14px;bottom:-14px;
  background:var(--dark);color:#fff;border:1px solid var(--dark-line);
  border-radius:var(--r);padding:12px 16px;font-size:13px;line-height:1.5;
  box-shadow:var(--shadow-hover);
}
.hero-badge strong{display:block;color:var(--neon-bright);font-size:15px;font-variant-numeric:tabular-nums;}

/* ---------- Anchor bar ---------- */
.anchor-bar{
  display:flex;flex-wrap:wrap;gap:12px;
  padding:32px 0 0;
}
.anchor-pill{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--line);background:#fff;border-radius:999px;
  padding:9px 18px;font-size:14px;font-weight:600;color:var(--ink);
  transition:all .18s var(--ease);
}
.anchor-pill i{color:var(--neon);font-size:12px;}
.anchor-pill:hover{border-color:var(--neon);color:var(--neon);transform:translateY(-2px);box-shadow:var(--shadow);}

/* ---------- Stagger cards ---------- */
.stagger-grid{margin-top:8px;}
.stagger-grid > .cell{margin-bottom:32px;}
.stagger-grid .cell:nth-child(even) .feature-card{transform:translateY(40px);}
.feature-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;height:100%;position:relative;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--neon);}
.feature-card::before{
  content:"";position:absolute;left:0;top:0;width:16px;height:2px;background:var(--neon);
  opacity:0;transition:opacity .18s var(--ease);z-index:3;
}
.feature-card:hover::before{opacity:1;}
.feature-card .card-media{position:relative;overflow:hidden;background:var(--bg-soft);}
.feature-card .card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s var(--ease);}
.feature-card:hover .card-media img{transform:scale(1.03);}
.card-no{
  position:absolute;left:0;bottom:0;background:var(--dark);color:var(--neon-bright);
  font-size:13px;font-weight:700;padding:6px 12px;font-variant-numeric:tabular-nums;
  border-top-right-radius:2px;
}
.card-body{padding:24px 24px 26px;}
.card-body h3{font-size:20px;line-height:1.4;margin-bottom:10px;}
.card-body p{font-size:15px;color:var(--ink-2);margin-bottom:16px;}
.card-list{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
.card-list span{font-size:13px;color:var(--ink-2);background:var(--bg-soft);border-radius:2px;padding:4px 10px;}

/* ---------- Steps ---------- */
.split{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:56px;align-items:start;}
.sticky-head{position:sticky;top:96px;}
.steps{border-top:1px solid var(--line);}
.step{
  display:grid;grid-template-columns:64px minmax(0,1fr);
  gap:20px;padding:26px 16px 26px 0;
  border-bottom:1px solid var(--line);
  position:relative;transition:background .18s var(--ease);
}
.step::before{
  content:"";position:absolute;left:-16px;top:0;bottom:0;width:2px;background:var(--neon);
  transform:scaleY(0);transform-origin:top;transition:transform .2s var(--ease);
}
.step:hover{background:#fff;}
.step:hover::before{transform:scaleY(1);}
.step-num{
  font-size:28px;font-weight:800;color:var(--neon);line-height:1.2;
  font-variant-numeric:tabular-nums;letter-spacing:-0.02em;
}
.step h3{font-size:17px;margin-bottom:6px;}
.step p{font-size:15px;color:var(--ink-2);margin:0;}

/* ---------- Info panel ---------- */
.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:32px;
}
.panel h3{font-size:20px;margin-bottom:14px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  padding:14px 0;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink-2);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-list i{color:var(--neon);font-size:13px;margin-top:7px;flex:0 0 auto;}
.check-list strong{color:var(--ink);font-weight:700;}

/* ---------- Data strip ---------- */
.data-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;background:var(--dark-line);
  border:1px solid var(--dark-line);border-radius:var(--r);overflow:hidden;
}
.data-cell{background:var(--dark-2);padding:28px 22px;}
.data-cell .k{font-size:34px;font-weight:800;color:var(--neon-bright);line-height:1.1;font-variant-numeric:tabular-nums;}
.data-cell .t{margin-top:10px;font-size:13px;color:var(--dark-text-2);line-height:1.6;}
.data-cell .cap{font-size:12px;color:var(--neon);font-weight:700;letter-spacing:.1em;margin-bottom:12px;display:block;}

/* ---------- FAQ ---------- */
.faq{max-width:860px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:17px;font-weight:700;color:var(--ink);
  transition:color .18s var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--neon);}
.faq-item summary .ico{
  flex:0 0 auto;width:26px;height:26px;border:1px solid var(--line);border-radius:2px;
  display:flex;align-items:center;justify-content:center;color:var(--neon);
  transition:transform .22s var(--ease),border-color .18s var(--ease);
  font-size:13px;
}
.faq-item[open] summary .ico{transform:rotate(45deg);border-color:var(--neon);}
.faq-answer{padding:0 0 24px;max-width:760px;font-size:15px;color:var(--ink-2);}

/* ---------- Link grid ---------- */
.link-grid{margin-top:8px;}
.link-card{
  display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:26px 24px;height:100%;transition:all .18s var(--ease);position:relative;
}
.link-card:hover{border-color:var(--neon);transform:translateY(-3px);box-shadow:var(--shadow-hover);color:var(--ink);}
.link-card .tag{
  display:inline-block;font-size:12px;font-weight:700;color:var(--neon);
  border:1px solid rgba(14,158,110,.35);border-radius:2px;padding:3px 8px;margin-bottom:14px;
}
.link-card h3{font-size:17px;margin-bottom:8px;}
.link-card p{font-size:14px;color:var(--ink-2);margin:0;}

/* ---------- CTA band ---------- */
.cta-band{background:var(--dark);color:var(--dark-text);padding:96px 0;}
.cta-inner{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:center;}
.cta-inner h2{color:#fff;font-size:clamp(26px,3vw,36px);line-height:1.2;margin-bottom:16px;}
.cta-inner p{color:var(--dark-text-2);font-size:16px;}
.cta-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--dark-line);border:1px solid var(--dark-line);border-radius:var(--r);overflow:hidden;}
.cta-tile{background:var(--dark-2);padding:26px 22px;display:block;color:var(--dark-text);transition:all .18s var(--ease);}
.cta-tile:hover{background:#1A1F26;color:#fff;}
.cta-tile i{color:var(--neon-bright);font-size:18px;margin-bottom:14px;display:block;}
.cta-tile h3{color:#fff;font-size:16px;margin-bottom:8px;}
.cta-tile p{color:var(--dark-text-2);font-size:13px;margin:0;}
.cta-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- Float CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:90;
  display:inline-flex;align-items:center;gap:10px;
  height:48px;padding:0 22px;border-radius:999px;
  background:var(--dark);color:var(--neon-bright);
  border:1px solid rgba(20,227,154,.55);
  font-size:15px;font-weight:700;
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:opacity .3s var(--ease),transform .3s var(--ease);
}
.float-cta.is-show{opacity:1;transform:none;pointer-events:auto;}
.float-cta::after{
  content:"";position:absolute;inset:-4px;border-radius:999px;
  box-shadow:0 0 0 1px rgba(20,227,154,.35);
  animation:breathe 2.4s ease-in-out infinite;
}
@keyframes breathe{0%,100%{opacity:.35;}50%{opacity:.6;}}
.float-cta:hover{color:#06120C;background:var(--neon-bright);}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:var(--dark-text);padding:72px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,4fr) repeat(3,minmax(0,2.6fr));
  gap:40px;padding-bottom:48px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;margin-bottom:16px;}
.footer-about{font-size:14px;color:var(--dark-text-2);max-width:340px;line-height:1.8;margin:0;}
.footer-col h4{font-size:14px;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--dark-text-2);}
.footer-col a:hover{color:var(--neon-bright);}
.footer-bottom{
  border-top:1px solid var(--dark-line);padding:22px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7C8481;
}
.footer-bottom a{color:#7C8481;}
.footer-bottom a:hover{color:var(--neon-bright);}

/* ---------- Reveal ---------- */
[data-reveal]{opacity:0;transform:translateY(10px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
[data-reveal].is-in{opacity:1;transform:none;}

/* ---------- Foundation overrides ---------- */
.grid-x{margin-left:-12px;margin-right:-12px;}
.grid-x > .cell{padding-left:12px;padding-right:12px;}
.grid-x.grid-margin-x{margin-left:-12px;margin-right:-12px;}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .container{padding-left:24px;padding-right:24px;}
  .nav-menu{display:none;}
  .nav-toggle{display:flex;}
  .header-actions .btn-sm{display:none;}
  .section{padding:76px 0;}
  .page-hero-inner{grid-template-columns:1fr;gap:32px;padding-top:28px;}
  .hero-visual .frame img{aspect-ratio:16/9;}
  .split{grid-template-columns:1fr;gap:32px;}
  .sticky-head{position:static;}
  .stagger-grid .cell:nth-child(even) .feature-card{transform:none;}
  .cta-inner{grid-template-columns:1fr;gap:36px;}
  .data-strip{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:768px){
  .cta-cards{grid-template-columns:1fr;}
  .hero-badge{left:0;bottom:-10px;}
}
@media (max-width:640px){
  .container{padding-left:18px;padding-right:18px;}
  .section{padding:56px 0;}
  .header-inner{height:56px;gap:16px;}
  .drawer{inset:56px 0 0 0;}
  .brand-text{font-size:15px;}
  .page-hero h1{font-size:clamp(30px,8vw,38px);}
  .hero-sub{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .data-strip{grid-template-columns:1fr;}
  .step{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:20px 0;}
  .step-num{font-size:22px;}
  .panel{padding:22px;}
  .cta-band{padding:56px 0;}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .float-cta{
    left:0;right:0;bottom:0;border-radius:0;height:56px;justify-content:center;
    padding-bottom:env(safe-area-inset-bottom);
  }
  .float-cta::after{display:none;}
  body{padding-bottom:0;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  [data-reveal]{opacity:1!important;transform:none!important;transition:none!important;}
  .float-cta::after{animation:none;opacity:.45;}
  .feature-card:hover .card-media img{transform:none;}
}

/* roulang page: category2 */
:root{
  --bg:#F5F6F3;
  --panel:#FFFFFF;
  --panel-alt:#EDEFE9;
  --ink:#0C0F12;
  --ink-2:#14181D;
  --ink-3:#262C33;
  --text:#12161A;
  --muted:#5C646C;
  --border:#E3E6E0;
  --neon:#14E39A;
  --green:#0E9E6E;
  --orange:#FF5C2B;
  --d-text:#E8EBE6;
  --d-muted:#9AA3A0;
  --r:4px;
  --maxw:1200px;
  --shadow:0 1px 2px rgba(12,15,18,.05);
  --shadow-hover:0 12px 28px rgba(12,15,18,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r)}
a{color:var(--green);text-decoration:none;transition:color .18s var(--ease)}
a:hover,a:focus-visible{color:var(--neon)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:800;letter-spacing:-.01em}
h1{font-size:clamp(34px,5vw,52px);line-height:1.12;letter-spacing:-.02em}
h2{font-size:clamp(26px,3vw,36px);line-height:1.2}
h3{font-size:20px;line-height:1.3;font-weight:700}
h4{font-size:17px;font-weight:700;line-height:1.35}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px}

.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 32px;
}
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section-head{margin-bottom:40px;max-width:820px}
.section-head .eyebrow{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--green);
  margin-bottom:12px;
}
.section-head p{color:var(--muted);font-size:16px;margin:14px 0 0}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:var(--ink);
}
.site-header::after{
  content:"";
  display:block;
  height:1px;
  background:linear-gradient(90deg,var(--neon) 0%,rgba(20,227,154,.35) 40%,rgba(20,227,154,0) 100%);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:64px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  font-weight:800;
  letter-spacing:-.01em;
  white-space:nowrap;
}
.brand:hover,.brand:focus-visible{color:#fff}
.brand-mark{
  width:16px;
  height:16px;
  flex:none;
  background:linear-gradient(135deg,var(--neon) 0 52%,transparent 52%);
  border:1px solid var(--neon);
  box-shadow:0 0 10px rgba(20,227,154,.35);
}
.nav-menu{
  display:flex;
  align-items:center;
  gap:22px;
  margin-left:auto;
}
.nav-menu a{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:#B9C1BD;
  white-space:nowrap;
}
.nav-menu a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--neon);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .18s var(--ease);
}
.nav-menu a:hover,.nav-menu a:focus-visible{color:#fff}
.nav-menu a:hover::after,.nav-menu a:focus-visible::after{transform:scaleX(1)}
.nav-menu a.is-active{
  color:#fff;
  text-shadow:0 0 8px rgba(20,227,154,.45);
}
.nav-menu a.is-active::after{transform:scaleX(1)}
.nav-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  height:40px;
  padding:0 18px;
  border:0;
  border-radius:var(--r);
  background:var(--neon);
  color:#06120C;
  font-size:15px;
  font-weight:700;
  white-space:nowrap;
  transition:filter .18s var(--ease),transform .18s var(--ease);
}
.nav-cta:hover,.nav-cta:focus-visible{filter:brightness(1.08);color:#06120C;transform:translateY(1px)}
.nav-cta:active{transform:translateY(2px)}
.nav-toggle{
  display:none;
  margin-left:auto;
  width:42px;height:38px;
  border:1px solid var(--ink-3);
  border-radius:var(--r);
  background:var(--ink-2);
  color:#fff;
  font-size:16px;
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--neon);color:var(--neon)}

.drawer{
  position:fixed;
  inset:0;
  z-index:200;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:6px;
  padding:32px 24px;
  background:var(--ink);
  transform:translateY(-102%);
  transition:transform .28s var(--ease);
  visibility:hidden;
}
.drawer.is-open{transform:translateY(0);visibility:visible}
.drawer a.drawer-link{
  display:flex;
  align-items:baseline;
  gap:14px;
  padding:14px 0;
  border-bottom:1px solid var(--ink-3);
  color:var(--d-text);
  font-size:18px;
  font-weight:700;
}
.drawer a.drawer-link span{font-size:13px;color:var(--neon);font-weight:700}
.drawer a.drawer-link.is-active{color:var(--neon)}
.drawer .drawer-cta{margin-top:24px}
.drawer-close{
  position:absolute;
  top:16px;right:20px;
  width:44px;height:44px;
  border:1px solid var(--ink-3);
  border-radius:var(--r);
  background:transparent;
  color:#fff;
  font-size:20px;
  cursor:pointer;
}
.drawer-close:hover{border-color:var(--neon);color:var(--neon)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  padding:22px 0 0;
  font-size:13px;
  color:var(--muted);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:0;padding:0;list-style:none}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:#C3C9C3}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover,.breadcrumb a:focus-visible{color:var(--green)}
.breadcrumb .current{color:var(--green);font-weight:700}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;
  padding:40px 0 64px;
  background:
    linear-gradient(rgba(12,15,18,.035) 1px,transparent 1px) 0 0/48px 48px,
    linear-gradient(90deg,rgba(12,15,18,.035) 1px,transparent 1px) 0 0/48px 48px,
    var(--panel);
  border-bottom:1px solid var(--border);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:48px;
  align-items:center;
}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 12px;
  border:1px solid var(--green);
  border-radius:2px;
  background:rgba(14,158,110,.06);
  color:var(--green);
  font-size:13px;
  font-weight:700;
  margin-bottom:20px;
}
.hero-tag::before{content:"";width:6px;height:6px;background:var(--neon);box-shadow:0 0 8px rgba(20,227,154,.6)}
.page-hero h1{margin-bottom:18px;max-width:16ch}
.hero-sub{
  font-size:17px;
  line-height:1.85;
  color:var(--muted);
  max-width:56ch;
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero-metrics{
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  padding-top:22px;
  border-top:1px solid var(--border);
}
.hero-metrics div{
  display:flex;
  align-items:baseline;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  font-weight:500;
}
.hero-metrics strong{font-size:17px;font-weight:800;color:var(--green);font-variant-numeric:tabular-nums}
.hero-media{position:relative}
.hero-media::before{
  content:"";
  position:absolute;
  left:-10px;top:-10px;
  width:12px;height:12px;
  background:var(--neon);
  z-index:2;
}
.hero-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border:1px solid var(--border);
  box-shadow:var(--shadow);
}
.hero-media figcaption{
  margin-top:12px;
  font-size:12px;
  color:var(--muted);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 22px;
  border-radius:var(--r);
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  cursor:pointer;
  text-align:center;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-primary{background:var(--neon);color:#06120C}
.btn-primary:hover,.btn-primary:focus-visible{background:var(--neon);filter:brightness(1.08);color:#06120C;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--ink)}
.btn-ghost:hover,.btn-ghost:focus-visible{background:var(--ink);color:var(--d-text);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:0;
  border:0;
  background:none;
  color:var(--green);
  font-size:15px;
  font-weight:700;
}
.btn-link::after{content:"→";transition:transform .18s var(--ease)}
.btn-link:hover::after,.btn-link:focus-visible::after{transform:translateX(3px)}

/* ---------- 双栏列表区 ---------- */
.list-layout{
  display:grid;
  grid-template-columns:4fr 8fr;
  gap:40px;
  align-items:start;
}
.anchor-panel{
  position:sticky;
  top:96px;
  padding:26px;
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--r);
  box-shadow:var(--shadow);
}
.anchor-panel h2{font-size:20px;margin-bottom:10px}
.anchor-panel .anchor-note{font-size:14px;line-height:1.75;color:var(--muted);margin-bottom:18px}
.anchor-list li+li{border-top:1px solid var(--border)}
.anchor-list a{
  position:relative;
  display:block;
  padding:12px 0 12px 14px;
  font-size:14px;
  font-weight:600;
  color:var(--muted);
}
.anchor-list a::before{
  content:"";
  position:absolute;
  left:0;top:50%;
  width:3px;height:0;
  background:var(--neon);
  transform:translateY(-50%);
  transition:height .18s var(--ease);
}
.anchor-list a:hover,.anchor-list a:focus-visible{color:var(--green);padding-left:18px}
.anchor-list a:hover::before,.anchor-list a:focus-visible::before{height:18px}
.anchor-panel .panel-cta{margin-top:22px;width:100%}

/* ---------- 时间轴列表 ---------- */
.timeline{position:relative;padding-left:26px}
.timeline::before{
  content:"";
  position:absolute;
  left:6px;top:14px;bottom:14px;
  width:1px;
  background:var(--border);
}
.tl-item{
  position:relative;
  display:grid;
  grid-template-columns:52px 1fr auto;
  gap:18px;
  align-items:start;
  padding:20px 14px 20px 4px;
  border-bottom:1px solid var(--border);
  transition:transform .18s var(--ease),background .18s var(--ease);
}
.tl-item::before{
  content:"";
  position:absolute;
  left:-25px;top:30px;
  width:11px;height:11px;
  border-radius:50%;
  background:var(--panel);
  border:2px solid var(--border);
  transition:border-color .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease);
}
.tl-item:hover{transform:translateX(4px);background:rgba(255,255,255,.7)}
.tl-item:hover::before{border-color:var(--neon);background:var(--neon);box-shadow:0 0 10px rgba(20,227,154,.55)}
.tl-no{
  font-size:13px;
  font-weight:800;
  color:var(--green);
  padding-top:2px;
  letter-spacing:.04em;
}
.tl-title{font-size:17px;font-weight:700;margin:0 0 6px;line-height:1.45}
.tl-desc{font-size:14px;line-height:1.75;color:var(--muted);margin:0;max-width:62ch}
.tl-meta{
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:8px;
  font-size:13px;
  color:var(--muted);
  white-space:nowrap;
}
.tl-badge{
  display:inline-block;
  padding:3px 9px;
  border:1px solid var(--green);
  border-radius:2px;
  background:rgba(14,158,110,.06);
  color:var(--green);
  font-size:12px;
  font-weight:700;
}
.tl-badge--hot{border-color:var(--orange);color:var(--orange);background:rgba(255,92,43,.07)}

/* ---------- 深色要点区 ---------- */
.band-dark{
  background:var(--ink);
  color:var(--d-text);
  padding:88px 0;
}
.band-dark h2{color:#fff}
.band-dark .section-head p{color:var(--d-muted)}
.band-dark .eyebrow{color:var(--neon)}
.band-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.band-cell{
  padding:8px 26px;
  border-left:1px solid var(--ink-3);
}
.band-cell:first-child{border-left:0;padding-left:0}
.band-cell .num{
  display:block;
  font-size:28px;
  font-weight:800;
  color:var(--neon);
  line-height:1;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.band-cell h3{color:#fff;font-size:17px;margin-bottom:10px}
.band-cell p{color:var(--d-muted);font-size:14px;line-height:1.75;margin:0}

/* ---------- FAQ ---------- */
.faq{border-top:1px solid var(--border);max-width:900px}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:22px 0;
  border:0;
  background:none;
  text-align:left;
  color:var(--text);
  font-size:17px;
  font-weight:700;
  line-height:1.5;
  cursor:pointer;
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--green)}
.faq-q .sign{
  flex:none;
  font-size:20px;
  font-weight:400;
  color:var(--green);
  transition:transform .2s var(--ease),color .18s var(--ease);
}
.faq-item.is-open .sign{transform:rotate(45deg);color:var(--orange)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s var(--ease);
}
.faq-a p{
  max-width:760px;
  padding-bottom:22px;
  font-size:15px;
  line-height:1.85;
  color:var(--muted);
  margin:0;
}

/* ---------- 内链网格 ---------- */
.link-grid{margin:0 -15px}
.link-card{
  display:block;
  position:relative;
  height:100%;
  padding:18px;
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--r);
  box-shadow:var(--shadow);
  color:var(--text);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.link-card::before{
  content:"";
  position:absolute;
  left:-1px;top:-1px;
  width:0;height:16px;
  background:var(--neon);
  transition:width .18s var(--ease);
}
.link-card:hover,.link-card:focus-visible{
  transform:translateY(-3px);
  border-color:var(--green);
  box-shadow:var(--shadow-hover);
  color:var(--text);
}
.link-card:hover::before,.link-card:focus-visible::before{width:16px}
.link-card img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  margin-bottom:14px;
  border:1px solid var(--border);
}
.link-card h3{font-size:17px;margin-bottom:8px}
.link-card p{font-size:14px;line-height:1.7;color:var(--muted);margin:0}
.link-card .more{display:inline-block;margin-top:12px;font-size:13px;font-weight:700;color:var(--green)}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  padding:92px 0;
  background:
    linear-gradient(rgba(12,15,18,.9),rgba(12,15,18,.94)),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  color:var(--d-text);
}
.cta-grid{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:44px;
  align-items:center;
}
.cta-band h2{color:#fff;margin-bottom:14px}
.cta-band p{color:var(--d-muted);font-size:16px;line-height:1.85;margin:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}
.cta-actions .btn-ghost{border-color:#4A544F;color:var(--d-text)}
.cta-actions .btn-ghost:hover,.cta-actions .btn-ghost:focus-visible{background:var(--neon);border-color:var(--neon);color:#06120C}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:90;
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:48px;
  padding:0 20px;
  border-radius:999px;
  background:var(--ink-2);
  border:1px solid var(--neon);
  color:var(--neon);
  font-size:15px;
  font-weight:700;
  box-shadow:0 8px 20px rgba(12,15,18,.18);
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none;animation:breath 2.4s ease-in-out infinite}
.float-cta:hover,.float-cta:focus-visible{color:#06120C;background:var(--neon)}
@keyframes breath{0%,100%{box-shadow:0 8px 20px rgba(20,227,154,.35)}50%{box-shadow:0 8px 20px rgba(20,227,154,.62)}}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink);
  color:var(--d-muted);
  padding:72px 0 28px;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid var(--ink-3);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  color:#fff;
  font-size:17px;
  font-weight:800;
  margin-bottom:16px;
}
.footer-brand .brand-mark{width:14px;height:14px}
.footer-about{font-size:14px;line-height:1.8;color:var(--d-muted);margin:0;max-width:34ch}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col li+li{margin-top:10px}
.footer-col a{color:var(--d-muted);font-size:14px}
.footer-col a:hover,.footer-col a:focus-visible{color:var(--neon)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  padding-top:24px;
  font-size:13px;
  color:#7E8783;
}
.footer-bottom a{color:#7E8783}
.footer-bottom a:hover,.footer-bottom a:focus-visible{color:var(--neon)}

/* ---------- 入场动效 ---------- */
.no-js .reveal{opacity:1;transform:none}
.reveal{opacity:0;transform:translateY(10px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.reveal.d1{transition-delay:.07s}
.reveal.d2{transition-delay:.14s}
.reveal.d3{transition-delay:.21s}
.reveal.d4{transition-delay:.28s}

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

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .nav-menu{display:none}
  .nav-cta{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{order:-1}
  .page-hero h1{max-width:none}
  .list-layout{grid-template-columns:1fr;gap:32px}
  .anchor-panel{position:static}
  .band-grid{grid-template-columns:repeat(2,1fr);gap:32px 0}
  .band-cell:nth-child(3){border-left:0;padding-left:0}
  .cta-grid{grid-template-columns:1fr;gap:28px}
  .cta-actions{justify-content:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:64px 0}
  .section--tight{padding:56px 0}
  .page-hero{padding:24px 0 48px}
  .band-dark{padding:64px 0}
  .cta-band{padding:64px 0}
  .tl-item{grid-template-columns:40px 1fr;gap:14px}
  .tl-meta{grid-column:2;flex-direction:row;align-items:center;justify-content:flex-start;margin-top:10px}
  .band-grid{grid-template-columns:1fr;gap:26px}
  .band-cell{padding:0;border-left:0;border-top:1px solid var(--ink-3);padding-top:22px}
  .band-cell:first-child{border-top:0;padding-top:0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:640px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .btn{width:100%}
  .btn-link{width:auto}
  .cta-actions{flex-direction:column;align-items:stretch}
  .float-cta{
    left:0;right:0;bottom:0;
    height:56px;
    border-radius:0;
    border-left:0;border-right:0;border-bottom:0;
    justify-content:center;
    padding-bottom:env(safe-area-inset-bottom);
    transform:translateY(100%);
  }
  .float-cta.is-visible{transform:translateY(0)}
  .timeline{padding-left:20px}
  .tl-item::before{left:-19px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: category3 */
:root{
  --bg:#F5F6F3;
  --bg-alt:#EDEFE9;
  --card:#FFFFFF;
  --dark:#0C0F12;
  --dark-2:#14181D;
  --dark-3:#1B2127;
  --dark-text:#E8EBE6;
  --dark-muted:#9AA3A0;
  --border-dark:#262C33;
  --neon:#14E39A;
  --neon-deep:#0E9E6E;
  --orange:#FF5C2B;
  --text:#12161A;
  --muted:#5C646C;
  --border:#E3E6E0;
  --radius:4px;
  --shadow:0 1px 2px rgba(12,15,18,.05);
  --shadow-lg:0 12px 28px rgba(12,15,18,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:64px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:800;color:var(--text);letter-spacing:-.01em}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border-radius:var(--radius)}
a{color:var(--neon-deep);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:#0A7A55}
button{font-family:inherit}
input,textarea,select{font-family:inherit}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 32px}
.section{padding:104px 0}
.section--tight{padding:72px 0}
.section--alt{background:var(--bg-alt)}
.section-head{max-width:780px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--neon-deep);margin-bottom:14px;
}
.eyebrow::before{content:"";width:18px;height:2px;background:var(--neon-deep)}
.lead{font-size:17px;color:var(--muted);line-height:1.85}
.muted{color:var(--muted)}
.meta{font-size:13px;font-weight:500;color:var(--muted)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--dark);
}
.site-header::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:40%;
  background:linear-gradient(90deg,var(--neon),rgba(20,227,154,0));
}
.header-inner{display:flex;align-items:center;gap:28px;height:var(--header-h)}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  position:relative;width:22px;height:22px;display:inline-block;
  border:2px solid var(--neon);border-radius:2px;
  transform:skewX(-8deg);
}
.brand-mark::after{
  content:"";position:absolute;right:-4px;bottom:-4px;
  width:7px;height:7px;background:var(--neon);border-radius:1px;
}
.brand-name{
  font-size:17px;font-weight:800;color:#fff;letter-spacing:.01em;
  white-space:nowrap;
}
.brand:hover .brand-name{color:var(--neon)}
.nav-menu{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-menu a{
  position:relative;display:inline-block;
  font-size:15px;color:#B9C1BD;padding:6px 0;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--neon);transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-menu a:hover{color:#fff}
.nav-menu a:hover::after{transform:scaleX(1)}
.nav-menu a.is-active{
  color:#fff;
  text-shadow:0 0 12px rgba(20,227,154,.45);
}
.nav-menu a.is-active::after{transform:scaleX(1)}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;flex:none;
  background:var(--neon);color:#06120C;
  font-size:15px;font-weight:700;border-radius:var(--radius);
  transition:filter .18s var(--ease),transform .18s var(--ease),color .18s var(--ease);
}
.nav-cta:hover{filter:brightness(1.08);transform:translateY(1px);color:#06120C}
.nav-toggle{
  display:none;margin-left:auto;
  width:42px;height:38px;border:1px solid var(--border-dark);border-radius:var(--radius);
  background:transparent;cursor:pointer;padding:0;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--dark-text)}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  background:var(--bg);
  border-bottom:1px solid var(--border);
  padding:56px 0 64px;
  background-image:
    linear-gradient(rgba(12,15,18,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(12,15,18,.035) 1px,transparent 1px);
  background-size:48px 48px;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--muted);margin-bottom:26px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--neon-deep)}
.breadcrumb .sep{color:#B4BBB5}
.breadcrumb .current{color:var(--neon-deep);font-weight:700}
.page-hero h1{
  font-size:clamp(30px,4.4vw,50px);
  line-height:1.14;font-weight:800;letter-spacing:-.02em;
  max-width:900px;margin-bottom:18px;
}
.page-hero .lead{max-width:720px;font-size:17px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.score-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  margin-top:44px;border:1px solid var(--border);border-radius:var(--radius);
  background:var(--card);overflow:hidden;
}
.score-cell{
  padding:22px 24px;border-left:1px solid var(--border);
}
.score-cell:first-child{border-left:0}
.score-cell .n{
  display:block;font-size:32px;font-weight:800;line-height:1.1;
  color:var(--neon-deep);letter-spacing:-.02em;
}
.score-cell .t{display:block;font-size:13px;color:var(--muted);margin-top:6px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--radius);
  font-size:15px;font-weight:700;cursor:pointer;
  border:1px solid transparent;background:transparent;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn-primary{background:var(--neon);color:#06120C}
.btn-primary:hover{background:#25F0AA;color:#06120C;transform:translateY(1px)}
.btn-primary:active{transform:translateY(2px)}
.btn-ghost{border-color:var(--dark);color:var(--dark)}
.btn-ghost:hover{background:var(--dark);color:var(--dark-text)}
.btn-ghost:active{background:var(--dark-2)}
.btn-text{height:auto;padding:0;color:var(--neon-deep)}
.btn-text::after{content:"→";transition:transform .18s var(--ease);display:inline-block}
.btn-text:hover::after{transform:translateX(3px)}
.btn-block{width:100%}

/* ---------- compare table ---------- */
.table-wrap{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
}
table.compare{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  font-size:15px;
}
table.compare thead th{
  position:sticky;top:var(--header-h);z-index:5;
  background:var(--dark);color:var(--neon);
  font-size:14px;font-weight:700;text-align:left;
  padding:18px 22px;
  border-bottom:1px solid var(--border-dark);
  white-space:nowrap;
}
table.compare thead th:first-child{color:var(--dark-text);width:24%}
table.compare thead th .th-note{
  display:block;font-size:12px;font-weight:500;color:var(--dark-muted);margin-top:2px;
}
table.compare thead th.is-highlight{color:var(--orange)}
table.compare tbody td{
  padding:18px 22px;
  border-bottom:1px solid var(--border);
  vertical-align:top;
}
table.compare tbody tr:last-child td{border-bottom:0}
table.compare tbody tr{transition:background .18s var(--ease)}
table.compare tbody tr:hover{background:#FAFBF8}
table.compare tbody tr:hover td:first-child{box-shadow:inset 3px 0 0 var(--neon)}
.compare .feat{display:block;font-weight:700;color:var(--text);font-size:15px}
.compare .feat-note{display:block;font-size:13px;color:var(--muted);margin-top:2px}
.compare .val{display:block;font-weight:700;font-size:15px;color:var(--text)}
.compare .val.is-diff{color:var(--orange)}
.compare .val.is-off{color:#A8AFAA;font-weight:600}
.compare .sub{display:block;font-size:13px;color:var(--muted);margin-top:2px}
.table-foot{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px;
  margin-top:18px;font-size:13px;color:var(--muted);
}
.diff-mark{display:inline-block;width:8px;height:8px;background:var(--orange);border-radius:1px;margin-right:6px;vertical-align:1px}

/* ---------- diff cards ---------- */
.diff-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.diff-card{
  position:relative;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:30px 26px 28px;
  box-shadow:var(--shadow);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.diff-card::before{
  content:"";position:absolute;left:0;top:30px;width:16px;height:2px;background:var(--neon);
  transition:width .18s var(--ease);
}
.diff-card:hover{transform:translateY(-3px);border-color:var(--neon);box-shadow:var(--shadow-lg)}
.diff-card:hover::before{width:28px}
.diff-card .idx{
  font-size:28px;font-weight:800;color:var(--neon-deep);line-height:1;
  margin:18px 0 14px;letter-spacing:-.02em;
}
.diff-card h3{font-size:17px;font-weight:700;margin-bottom:10px}
.diff-card p{font-size:15px;color:var(--muted);margin:0}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:2px;font-size:13px;font-weight:700;
  background:rgba(20,227,154,.10);border:1px solid var(--neon-deep);color:var(--neon-deep);
}
.tag--orange{background:rgba(255,92,43,.10);border-color:var(--orange);color:var(--orange)}

/* ---------- steps ---------- */
.steps{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--border);
}
.step{
  padding:34px 26px 30px;
  border-bottom:1px solid var(--border);
  border-left:1px solid var(--border);
  background:var(--card);
  transition:background .18s var(--ease);
}
.step:first-child{border-left:0}
.step:hover{background:#FAFBF8}
.step .num{
  display:block;font-size:24px;font-weight:800;color:var(--neon-deep);
  letter-spacing:-.02em;margin-bottom:14px;
}
.step h3{font-size:17px;font-weight:700;margin-bottom:8px}
.step p{font-size:15px;color:var(--muted);margin:0}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--border);max-width:920px}
.faq details{border-bottom:1px solid var(--border)}
.faq summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;font-size:17px;font-weight:700;color:var(--text);
  cursor:pointer;list-style:none;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";font-size:22px;font-weight:700;line-height:1;
  color:var(--muted);flex:none;
  transition:transform .2s var(--ease),color .2s var(--ease);
}
.faq details[open] summary::after{transform:rotate(45deg);color:var(--neon-deep)}
.faq summary:hover{color:var(--neon-deep)}
.faq .faq-body{max-width:760px;padding:0 0 24px;font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- link grid ---------- */
.link-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.link-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);
  transition:transform .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.link-card:hover{transform:translateY(-3px);border-color:var(--neon);box-shadow:var(--shadow-lg)}
.link-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#E9ECE6;border-radius:0}
.link-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s var(--ease)}
.link-card:hover .thumb img{transform:scale(1.03)}
.link-card .body{padding:22px 24px 24px}
.link-card h3{font-size:17px;font-weight:700;margin-bottom:8px;color:var(--text)}
.link-card:hover h3{color:var(--neon-deep)}
.link-card p{font-size:14px;color:var(--muted);margin:0}
.link-card .more{
  display:inline-block;margin-top:14px;font-size:14px;font-weight:700;color:var(--neon-deep);
}
.link-card .more::after{content:"→";display:inline-block;margin-left:6px;transition:transform .18s var(--ease)}
.link-card:hover .more::after{transform:translateX(3px)}

/* ---------- cta band ---------- */
.cta-band{background:var(--dark);color:var(--dark-text)}
.cta-inner{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:84px 0;
}
.cta-band h2{color:#fff;font-size:clamp(24px,2.8vw,34px);line-height:1.2;margin-bottom:14px}
.cta-band p{color:var(--dark-muted);font-size:16px;max-width:520px}
.cta-form{display:flex;flex-wrap:wrap;gap:12px}
.cta-form .field{flex:1 1 240px;min-width:0}
.field-label{display:block;font-size:14px;font-weight:600;color:var(--dark-text);margin-bottom:8px}
.cta-form input[type="text"],
.cta-form input[type="email"],
.cta-form select{
  width:100%;height:48px;padding:0 14px;
  background:var(--dark-2);border:1px solid var(--border-dark);border-radius:var(--radius);
  color:var(--dark-text);font-size:15px;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.cta-form input::placeholder{color:#6E7773}
.cta-form input:focus,.cta-form select:focus{
  outline:none;border-color:var(--neon);box-shadow:0 0 0 2px rgba(20,227,154,.18);
}
.cta-form .btn-primary{height:48px;flex:0 0 auto;margin-top:30px}
.cta-note{font-size:13px;color:var(--dark-muted);margin-top:16px;width:100%}

/* ---------- float cta ---------- */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:999px;
  background:var(--dark-2);border:1px solid var(--neon);color:var(--neon);
  font-size:15px;font-weight:700;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
  animation:breathe 2.4s ease-in-out infinite;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none}
.float-cta:hover{color:#06120C;background:var(--neon);border-color:var(--neon)}
@keyframes breathe{0%,100%{box-shadow:0 0 0 0 rgba(20,227,154,.35)}50%{box-shadow:0 0 0 6px rgba(20,227,154,.18)}}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:var(--dark-muted);padding:72px 0 0;border-top:1px solid var(--border-dark)}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;
  padding-bottom:56px;
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:800;margin-bottom:16px}
.footer-about{font-size:14px;line-height:1.85;color:var(--dark-muted);max-width:360px;margin:0}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:var(--dark-muted)}
.footer-col a:hover{color:var(--neon)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:22px 0 28px;border-top:1px solid var(--border-dark);font-size:13px;color:#7C8581;
}
.footer-bottom a{color:#7C8581}
.footer-bottom a:hover{color:var(--neon)}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .nav-toggle{display:flex}
  .nav-cta{display:none}
  .nav-menu{
    position:fixed;left:0;right:0;top:56px;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--dark-2);padding:24px;
    counter-reset:navitem;
    transform:translateY(-8px);opacity:0;visibility:hidden;
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
    overflow-y:auto;
  }
  .nav-menu.is-open{opacity:1;visibility:visible;transform:none}
  .nav-menu a{
    display:flex;align-items:center;
    font-size:18px;padding:16px 0;border-bottom:1px solid var(--border-dark);
  }
  .nav-menu a::before{
    counter-increment:navitem;content:"0" counter(navitem);
    color:var(--neon);font-size:13px;font-weight:700;margin-right:14px;
  }
  .nav-menu a::after{display:none}
  .score-strip{grid-template-columns:repeat(2,1fr)}
  .score-cell:nth-child(3){border-left:0;border-top:1px solid var(--border)}
  .score-cell:nth-child(4){border-top:1px solid var(--border)}
  .diff-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step:nth-child(3){border-left:0}
  .link-grid{grid-template-columns:repeat(2,1fr)}
  .cta-inner{grid-template-columns:1fr;gap:32px;padding:64px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  table.compare thead th{top:56px}
}
@media (max-width:768px){
  .header-inner{height:56px}
  :root{--header-h:56px}
  .brand-name{font-size:16px}
  .page-hero{padding:40px 0 48px}
  .hero-actions .btn{width:100%}
  .section{padding:60px 0}
  .table-wrap{border:0;background:transparent}
  table.compare,
  table.compare tbody,
  table.compare tr,
  table.compare td{display:block;width:100%}
  table.compare thead{display:none}
  table.compare tbody tr{
    background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
    padding:8px 18px 14px;margin-bottom:16px;
  }
  table.compare tbody tr:hover{background:var(--card)}
  table.compare tbody tr:hover td:first-child{box-shadow:none}
  table.compare tbody td{
    display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
    border-bottom:1px solid var(--border);padding:14px 0;
  }
  table.compare tbody tr td:last-child{border-bottom:0}
  table.compare tbody td::before{
    content:attr(data-label);
    flex:none;font-size:13px;font-weight:700;color:var(--muted);
    padding-top:2px;
  }
  table.compare tbody td.cell-feat{
    display:block;background:#FAFBF8;margin:0 -18px;padding:14px 18px;
    border-bottom:1px solid var(--border);
  }
  table.compare tbody td.cell-feat::before{content:none}
  .compare .val,.compare .sub{text-align:right}
  .compare .val{display:inline-block}
  .compare .sub{display:block;width:100%}
  .diff-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .step{border-left:0}
  .link-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .cta-form .field{flex:1 1 100%}
  .cta-form .btn-primary{width:100%;margin-top:8px}
  .float-cta{
    left:0;right:0;bottom:0;height:56px;border-radius:0;
    border-left:0;border-right:0;border-bottom:0;
    padding-bottom:env(safe-area-inset-bottom);
    animation:none;
  }
}
@media (max-width:520px){
  .container{padding:0 18px}
  .score-strip{grid-template-columns:1fr}
  .score-cell{border-left:0;border-top:1px solid var(--border)}
  .score-cell:first-child{border-top:0}
  .page-hero h1{font-size:28px}
  .faq summary{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
/* ============ 设计变量 ============ */
:root{
  --bg:#F5F6F3;
  --surface:#FFFFFF;
  --surface-alt:#EDEFE9;
  --ink:#12161A;
  --ink-2:#5C646C;
  --line:#E3E6E0;
  --dark:#0C0F12;
  --dark-2:#14181D;
  --dark-line:#262C33;
  --dark-text:#E8EBE6;
  --dark-muted:#9AA3A0;
  --neon:#14E39A;
  --neon-dim:#0E9E6E;
  --orange:#FF5C2B;
  --radius:4px;
  --shadow-1:0 1px 2px rgba(12,15,18,.05);
  --shadow-2:0 12px 28px rgba(12,15,18,.10);
  --ease:cubic-bezier(.22,.61,.36,1);
  --maxw:1200px;
}

/* ============ 基础 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius);}
a{color:var(--neon-dim);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--neon-dim);}
h1,h2,h3,h4{margin:0;line-height:1.2;font-weight:800;letter-spacing:-0.01em;}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font:inherit;cursor:pointer;border:0;background:none;}
input,select,textarea{font:inherit;}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:2px;}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 32px;}
.section{padding:96px 0;}
.section-sm{padding:64px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--neon-dim);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:16px;height:1px;background:var(--neon-dim);display:inline-block;}
.section-head{margin-bottom:40px;max-width:760px;}
.section-head h2{font-size:clamp(26px,3vw,36px);margin-bottom:14px;}
.section-head p{color:var(--ink-2);font-size:16px;}
.muted{color:var(--ink-2);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius);
  font-size:15px;font-weight:700;border:1px solid transparent;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),filter .18s var(--ease);
}
.btn i{font-size:13px;transition:transform .18s var(--ease);}
.btn-primary{background:var(--neon);color:#06120C;}
.btn-primary:hover{filter:brightness(1.07);color:#06120C;transform:translateY(1px);}
.btn-primary:active{transform:translateY(2px);}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:var(--ink);color:#FFFFFF;}
.btn-onDark{border-color:#3A4249;color:var(--dark-text);background:transparent;}
.btn-onDark:hover{border-color:var(--neon);color:var(--neon);}
.btn-text{color:var(--neon-dim);font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:6px;}
.btn-text i{transition:transform .18s var(--ease);}
.btn-text:hover i{transform:translateX(3px);}
.btn-block{width:100%;}

/* ============ 徽章 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;font-weight:700;border-radius:2px;
  padding:2px 9px;border:1px solid var(--neon-dim);
  color:var(--neon-dim);background:rgba(14,158,110,.06);
}
.badge-accent{border-color:var(--orange);color:var(--orange);background:rgba(255,92,43,.07);}
.badge-onDark{border-color:rgba(20,227,154,.5);color:var(--neon);background:rgba(20,227,154,.08);}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;background:var(--dark);
  border-bottom:1px solid #1B2126;
}
.site-header::after{
  content:"";position:absolute;left:0;bottom:-1px;height:1px;width:40%;
  background:linear-gradient(90deg,var(--neon),rgba(20,227,154,0));
}
.nav-bar{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:64px;max-width:var(--maxw);margin:0 auto;padding:0 32px;
}
.brand{display:flex;align-items:center;gap:10px;color:#FFFFFF;font-size:17px;font-weight:800;letter-spacing:-0.01em;}
.brand:hover{color:#FFFFFF;}
.brand-mark{
  position:relative;width:22px;height:22px;flex:0 0 22px;border-radius:2px;
  background:linear-gradient(135deg,var(--neon),#0B8F61);
  clip-path:polygon(0 0,100% 0,100% 66%,66% 100%,0 100%);
}
.brand-mark::after{
  content:"";position:absolute;right:3px;top:3px;width:5px;height:5px;
  background:#06120C;border-radius:50%;
}
.nav-menu{display:flex;align-items:center;gap:26px;}
.nav-menu a{
  position:relative;color:#B9C1BD;font-size:15px;font-weight:500;padding:6px 0;
}
.nav-menu a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--neon);transition:width .18s var(--ease);
}
.nav-menu a:hover{color:#FFFFFF;}
.nav-menu a:hover::after{width:100%;}
.nav-menu a.is-active{
  color:#FFFFFF;font-weight:700;
  text-shadow:0 0 12px rgba(20,227,154,.35);
}
.nav-menu a.is-active::after{width:100%;}
.nav-cta{height:40px;padding:0 18px;font-size:14px;}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--dark-line);border-radius:var(--radius);
  color:var(--dark-text);align-items:center;justify-content:center;
}
.nav-toggle i{font-size:16px;}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-2);padding:22px 0 0;
}
.breadcrumb a{color:var(--ink-2);}
.breadcrumb a:hover{color:var(--neon-dim);}
.breadcrumb .sep{color:#C3C8C1;}
.breadcrumb .current{color:var(--neon-dim);font-weight:700;}

/* ============ 窄 Hero ============ */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--dark);color:var(--dark-text);
  border-bottom:1px solid var(--dark-line);
}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center right;
  opacity:.30;
}
.page-hero .hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(12,15,18,.96) 0%,rgba(12,15,18,.86) 52%,rgba(12,15,18,.62) 100%);
}
.page-hero .hero-inner{position:relative;padding:64px 0 72px;}
.page-hero h1{
  font-size:clamp(30px,4vw,48px);line-height:1.16;color:#FFFFFF;
  max-width:780px;margin-bottom:18px;
}
.page-hero .lead{max-width:640px;color:#C6CDC8;font-size:17px;line-height:1.8;margin-bottom:24px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;}

/* ============ 数据维度条 ============ */
.dim-strip{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:32px;box-shadow:var(--shadow-1);
  margin-top:-40px;position:relative;z-index:2;
}
.dim-item{
  padding:0 24px;border-left:1px solid var(--line);
}
.dim-item:first-child{border-left:0;padding-left:0;}
.dim-item:last-child{padding-right:0;}
.dim-num{
  display:block;font-size:24px;font-weight:800;color:var(--neon-dim);
  letter-spacing:.02em;margin-bottom:8px;
}
.dim-item h3{font-size:17px;margin-bottom:8px;}
.dim-item p{font-size:14px;color:var(--ink-2);line-height:1.75;margin:0;}

/* ============ 问答 + 表单 ============ */
.qa-layout{padding-top:88px;}
.qa-col h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:12px;}
.qa-col .qa-note{color:var(--ink-2);font-size:15px;margin-bottom:28px;}

.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 0;text-align:left;color:var(--ink);
  font-size:17px;font-weight:700;line-height:1.5;
  transition:color .18s var(--ease);
}
.faq-q:hover{color:var(--neon-dim);}
.faq-icon{
  position:relative;flex:0 0 18px;width:18px;height:18px;
  transition:transform .3s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:1px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);color:var(--neon-dim);}
.faq-item.is-open .faq-q{color:var(--neon-dim);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s var(--ease);}
.faq-a-inner{padding:0 0 22px;max-width:760px;}
.faq-a-inner p{font-size:15px;line-height:1.85;color:var(--ink-2);margin:0;}

/* ============ 表单卡（深色） ============ */
.form-card{
  background:var(--dark);border:1px solid var(--dark-line);border-radius:var(--radius);
  padding:34px;color:var(--dark-text);
}
.form-card h2{font-size:23px;color:#FFFFFF;margin-bottom:10px;}
.form-card .form-lead{font-size:14px;color:var(--dark-muted);line-height:1.75;margin-bottom:26px;}
.f-field{margin-bottom:18px;}
.f-field label{display:block;font-size:14px;font-weight:600;color:var(--dark-text);margin-bottom:7px;}
.f-field label .req{color:var(--orange);margin-left:2px;}
.f-field input,
.f-field select,
.f-field textarea{
  width:100%;height:44px;padding:0 12px;border-radius:var(--radius);
  background:var(--dark-2);border:1px solid var(--dark-line);color:var(--dark-text);
  font-size:15px;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.f-field textarea{height:auto;min-height:112px;padding:11px 12px;line-height:1.7;resize:vertical;}
.f-field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#9AA3A0 50%),linear-gradient(135deg,#9AA3A0 50%,transparent 50%);
  background-position:calc(100% - 18px) 19px,calc(100% - 13px) 19px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:38px;}
.f-field input::placeholder,
.f-field textarea::placeholder{color:#6C7570;}
.f-field input:focus,
.f-field select:focus,
.f-field textarea:focus{
  border-color:var(--neon);outline:2px solid rgba(20,227,154,.28);outline-offset:2px;
}
.form-note{font-size:13px;color:var(--dark-muted);line-height:1.7;margin-top:14px;}
.form-msg{
  display:none;margin-top:14px;padding:10px 12px;border-radius:var(--radius);
  border:1px solid rgba(20,227,154,.5);background:rgba(20,227,154,.08);
  color:var(--neon);font-size:14px;
}
.form-msg.is-show{display:block;}

/* ============ 相关链接网格 ============ */
.link-grid{padding-top:0;}
.link-card{
  display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;height:100%;box-shadow:var(--shadow-1);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.link-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--neon-dim);}
.link-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--surface-alt);}
.link-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.link-card .thumb::before{
  content:"";position:absolute;left:0;top:0;width:16px;height:16px;
  border-left:2px solid var(--neon);border-top:2px solid var(--neon);opacity:0;
  transition:opacity .18s var(--ease);z-index:2;
}
.link-card:hover .thumb::before{opacity:1;}
.link-card .body{padding:22px;}
.link-card h3{font-size:17px;margin-bottom:8px;}
.link-card p{font-size:14px;color:var(--ink-2);line-height:1.75;margin:0;}
.link-card .more{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;
  font-size:14px;font-weight:700;color:var(--neon-dim);
}
.link-card .more i{transition:transform .18s var(--ease);}
.link-card:hover .more i{transform:translateX(3px);}
.inline-links{
  margin-top:32px;display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:14px;color:var(--ink-2);
}
.inline-links a{
  padding:7px 14px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--surface);color:var(--ink);font-weight:600;
}
.inline-links a:hover{border-color:var(--neon-dim);color:var(--neon-dim);}

/* ============ 页尾 CTA ============ */
.cta-band{background:var(--dark);color:var(--dark-text);position:relative;overflow:hidden;}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:48px 48px;pointer-events:none;
}
.cta-band .inner{position:relative;padding:80px 0;display:flex;flex-wrap:wrap;align-items:center;gap:32px;justify-content:space-between;}
.cta-band h2{font-size:clamp(24px,2.8vw,34px);color:#FFFFFF;margin-bottom:12px;}
.cta-band p{color:#AEB6B2;font-size:16px;max-width:560px;margin:0;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark-2);color:var(--dark-muted);padding:64px 0 26px;border-top:1px solid var(--dark-line);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#FFFFFF;font-weight:800;font-size:17px;margin-bottom:14px;}
.footer-about{font-size:14px;line-height:1.8;max-width:340px;margin:0;}
.footer-col h4{color:#FFFFFF;font-size:15px;margin-bottom:16px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{color:var(--dark-muted);font-size:14px;}
.footer-col a:hover{color:var(--neon);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid var(--dark-line);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#7C8580;
}
.footer-bottom a{color:#7C8580;}
.footer-bottom a:hover{color:var(--neon);}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;height:48px;padding:0 22px;
  background:rgba(12,15,18,.94);border:1px solid rgba(20,227,154,.6);border-radius:999px;
  color:var(--neon);font-weight:700;font-size:15px;box-shadow:0 10px 26px rgba(12,15,18,.24);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s;
}
.float-cta.is-show{opacity:1;visibility:visible;transform:none;}
.float-cta:hover{color:#06120C;background:var(--neon);border-color:var(--neon);}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(10px);transition:opacity .42s var(--ease),transform .42s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .nav-bar{padding:0 24px;height:56px;}
  .nav-toggle{display:inline-flex;}
  .nav-cta{display:none;}
  .nav-menu{
    position:fixed;left:0;right:0;top:56px;bottom:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--dark);padding:18px 24px 32px;
    overflow-y:auto;border-top:1px solid var(--dark-line);
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
  }
  .nav-menu.is-open{opacity:1;visibility:visible;transform:none;}
  .nav-menu a{
    font-size:18px;font-weight:600;color:#DDE3DF;
    padding:16px 0;border-bottom:1px solid #1B2126;display:flex;align-items:center;gap:12px;
  }
  .nav-menu a::before{
    content:attr(data-num);font-size:13px;color:var(--neon);font-weight:700;
    letter-spacing:.06em;min-width:22px;
  }
  .nav-menu a::after{display:none;}
  .nav-menu a.is-active{color:#FFFFFF;}
  .section{padding:72px 0;}
  .qa-layout{padding-top:64px;}
  .dim-strip{margin-top:0;}
  .dim-item{border-left:0;padding:18px 0;border-top:1px solid var(--line);}
  .dim-item:first-child{border-top:0;padding-top:0;}
  .dim-item:last-child{padding-bottom:0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band .inner{padding:64px 0;}
}
@media (max-width:640px){
  .container{padding:0 18px;}
  .nav-bar{padding:0 18px;}
  .section{padding:56px 0;}
  .page-hero .hero-inner{padding:44px 0 52px;}
  .dim-strip{padding:24px;}
  .form-card{padding:24px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .cta-band .inner{padding:56px 0;flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .float-cta{
    left:0;right:0;bottom:0;height:56px;border-radius:0;
    justify-content:center;border-left:0;border-right:0;border-bottom:0;
    padding-bottom:env(safe-area-inset-bottom);
  }
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}