/* roulang page: index */
:root{
  --bg:#070E18;
  --bg-2:#0B1522;
  --bg-3:#101C2C;
  --brand:#1FE0C0;
  --brand-hover:#4BF0D4;
  --brand-active:#12B79C;
  --brand-soft:rgba(31,224,192,.12);
  --accent:#FF7A3C;
  --accent-soft:rgba(255,122,60,.12);
  --text:#E6EDF7;
  --text-2:#9BA9C0;
  --text-3:#66748C;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --ok:#35D07F;
  --warn:#FFB020;
  --err:#FF5C5C;
  --glass:rgba(255,255,255,.045);
  --r-xs:6px;
  --r-sm:8px;
  --r-md:10px;
  --r:14px;
  --r-lg:20px;
  --shadow-card:0 18px 40px -22px rgba(0,0,0,.85);
  --shadow-glow:0 8px 24px rgba(31,224,192,.22);
  --max:1200px;
  --sp:24px;
}
*,*::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:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .22s ease-out;}
button,input,select,textarea{font:inherit;color:inherit;outline:none;}
button{background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.3;font-weight:700;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(31,224,192,.28);}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;letter-spacing:.02em;}

.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--sp);}
.section{padding:110px 0;position:relative;}
.section-tight{padding:80px 0;}

/* ---------- 滚动进度 ---------- */
.progress-bar{
  position:fixed;top:0;left:0;height:2px;width:0;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  z-index:200;transition:width .12s linear;
}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  height:72px;
  background:rgba(7,14,24,.55);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  transition:height .24s ease-out,background .24s ease-out;
}
.site-header.is-scrolled{
  height:60px;
  background:rgba(7,14,24,.72);
}
.header-inner{
  height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:30px;height:30px;border-radius:9px;
  border:1px solid rgba(31,224,192,.55);
  background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;
  color:var(--brand);flex:0 0 auto;
}
.logo-mark svg{width:16px;height:16px;}
.logo-text{font-size:18px;font-weight:700;color:var(--text);letter-spacing:-.01em;white-space:nowrap;}
.nav-desktop{display:flex;align-items:center;gap:32px;}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 2px;
}
.nav-link:hover{color:var(--text);}
.nav-link.active{color:var(--brand);}
.nav-link.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
  background:var(--brand);border-radius:2px;
}
.header-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-md);
  border:1px solid var(--line-strong);align-items:center;justify-content:center;color:var(--text-2);
}
.nav-toggle:hover{color:var(--brand);border-color:rgba(31,224,192,.45);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-md);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:transform .22s ease-out,box-shadow .22s ease-out,background .22s ease-out,border-color .22s ease-out,color .22s ease-out;
  white-space:nowrap;
}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-primary{
  background:var(--brand);color:#04121A;
  box-shadow:var(--shadow-glow);
}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-2px);box-shadow:0 12px 36px rgba(31,224,192,.32);}
.btn-primary:active{background:var(--brand-active);transform:translateY(0);}
.btn-ghost{
  border:1px solid var(--line-strong);color:var(--text);
  background:transparent;
}
.btn-ghost:hover{border-color:rgba(31,224,192,.6);color:var(--brand);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.link-arrow span.arrow{display:inline-block;transition:transform .22s ease-out;}
.link-arrow:hover span.arrow{transform:translateX(4px);}

/* ---------- 徽章 / 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-xs);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.tag-orange{
  background:var(--accent-soft);color:var(--accent);border:1px solid rgba(255,122,60,.3);
}
.tag-cyan{
  background:var(--brand-soft);color:var(--brand);border:1px solid rgba(31,224,192,.3);
}
.tag-plain{
  background:rgba(255,255,255,.05);color:var(--text-2);border:1px solid var(--line);
}

/* ---------- 区块标题 ---------- */
.section-head{margin-bottom:48px;}
.section-head.row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--text-3);
  text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{
  content:"";width:4px;height:4px;border-radius:50%;background:var(--brand);
}
.section-title{font-size:clamp(24px,3.4vw,36px);color:var(--text);}
.section-desc{margin-top:14px;max-width:720px;color:var(--text-2);font-size:16px;line-height:1.8;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:172px 0 120px;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center 30%;background-repeat:no-repeat;
  isolation:isolate;
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(760px 420px at 12% 18%,rgba(31,224,192,.16),transparent 65%),
    radial-gradient(620px 380px at 88% 68%,rgba(31,224,192,.10),transparent 70%),
    linear-gradient(180deg,rgba(7,14,24,.9) 0%,rgba(7,14,24,.82) 45%,var(--bg) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  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:64px 64px;
  opacity:.6;
}
.hero-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  height:32px;padding:0 14px;border-radius:999px;
  border:1px solid rgba(31,224,192,.3);background:var(--brand-soft);
  color:var(--brand);font-size:13px;font-weight:600;margin-bottom:24px;
}
.hero h1{
  font-size:clamp(30px,5vw,52px);line-height:1.25;color:var(--text);
}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{
  margin-top:22px;max-width:540px;
  font-size:17px;line-height:1.85;color:var(--text-2);letter-spacing:.01em;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:34px;}
.hero-metrics{
  display:flex;gap:40px;margin-top:46px;flex-wrap:wrap;
  padding-top:28px;border-top:1px solid var(--line);
}
.metric{min-width:110px;}
.metric-num{
  font-size:26px;font-weight:700;color:var(--text);
  font-variant-numeric:tabular-nums;
}
.metric-num i{font-style:normal;color:var(--brand);font-size:15px;font-weight:600;margin-left:2px;}
.metric-label{font-size:13px;color:var(--text-3);margin-top:4px;line-height:1.6;}

/* 入口面板 */
.entry-panel{
  position:relative;
  border-radius:var(--r-lg);
  padding:32px 30px 30px;
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.entry-panel::before{
  content:"";position:absolute;top:26px;left:30px;
  width:3px;height:28px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),rgba(31,224,192,.1));
}
.entry-panel h2{
  font-size:20px;padding-left:16px;margin-bottom:6px;
}
.entry-panel .panel-note{
  font-size:13px;color:var(--text-3);padding-left:16px;margin-bottom:26px;line-height:1.7;
}
.field{margin-bottom:18px;}
.field label{
  display:block;font-size:14px;color:var(--text-2);margin-bottom:8px;font-weight:500;
}
.field input,.field select{
  width:100%;height:46px;padding:0 14px;border-radius:var(--r-md);
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.10);
  color:var(--text);font-size:15px;
  transition:border-color .22s ease-out,box-shadow .22s ease-out,background .22s ease-out;
}
.field input::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus{
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(31,224,192,.18);
  background:rgba(255,255,255,.05);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--text-3) 50%),linear-gradient(135deg,var(--text-3) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;}
.panel-foot{
  margin-top:20px;padding-top:18px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);flex-wrap:wrap;
}
.scroll-indicator{
  position:absolute;left:50%;bottom:34px;transform:translateX(-50%);
  width:22px;height:36px;border:1px solid var(--line-strong);border-radius:12px;
  display:flex;justify-content:center;padding-top:7px;
}
.scroll-indicator i{
  display:block;width:3px;height:8px;border-radius:2px;background:var(--brand);
  animation:scrollDot 1.8s ease-in-out infinite;
}
@keyframes scrollDot{
  0%{transform:translateY(0);opacity:1;}
  70%{transform:translateY(12px);opacity:.2;}
  100%{transform:translateY(0);opacity:1;}
}

/* ---------- 卖点编号条带 ---------- */
.features-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:0 24px;
  border-top:1px solid var(--line);
}
.feature-strip{
  display:flex;gap:24px;padding:34px 0 34px;border-bottom:1px solid var(--line);
}
.feature-strip:nth-child(even){padding-left:48px;}
.feature-num{
  font-size:40px;font-weight:700;line-height:1;
  color:transparent;-webkit-text-stroke:1px rgba(31,224,192,.42);
  font-variant-numeric:tabular-nums;flex:0 0 auto;padding-top:2px;
}
.feature-body h3{font-size:20px;margin-bottom:10px;}
.feature-body p{font-size:14px;line-height:1.75;color:var(--text-2);}

/* ---------- 演示区 ---------- */
.demo-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start;}
.window-frame{
  border-radius:var(--r);border:1px solid var(--line);overflow:hidden;
  background:rgba(255,255,255,.03);
  box-shadow:var(--shadow-card);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.window-bar{
  display:flex;align-items:center;gap:8px;height:42px;padding:0 16px;
  border-bottom:1px solid var(--line);background:rgba(255,255,255,.02);
}
.window-bar i{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.14);display:block;}
.window-bar i:first-child{background:rgba(255,122,60,.55);}
.window-bar i:nth-child(2){background:rgba(255,176,32,.5);}
.window-bar i:nth-child(3){background:rgba(31,224,192,.5);}
.window-bar span{margin-left:8px;font-size:12px;color:var(--text-3);letter-spacing:.06em;}
.window-frame img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.path-list{display:flex;flex-direction:column;gap:28px;}
.path-item{
  padding-left:18px;border-left:2px solid rgba(31,224,192,.28);
}
.path-item h3{font-size:18px;margin-bottom:8px;}
.path-item p{font-size:15px;color:var(--text-2);line-height:1.75;margin-bottom:10px;}

/* ---------- 资讯卡片 ---------- */
.news-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.news-card{
  display:flex;flex-direction:column;
  border-radius:var(--r);overflow:hidden;
  background:var(--bg-2);border:1px solid var(--line);
  transition:transform .22s ease-out,border-color .22s ease-out,box-shadow .22s ease-out;
}
.news-card:hover{
  transform:translateY(-2px);
  border-color:rgba(31,224,192,.4);
  box-shadow:var(--shadow-card);
}
.news-thumb{overflow:hidden;border-radius:12px 12px 0 0;}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .26s ease-out;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-title{
  font-size:18px;font-weight:600;line-height:1.5;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-desc{
  font-size:14px;line-height:1.7;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-time{font-size:13px;color:var(--text-3);margin-top:auto;font-variant-numeric:tabular-nums;}
.news-empty{
  text-align:center;padding:64px 24px;border:1px dashed var(--line-strong);border-radius:var(--r);
  background:rgba(255,255,255,.02);
}
.news-empty svg{width:48px;height:48px;margin:0 auto 16px;color:var(--text-3);}
.news-empty p{font-size:14px;color:var(--text-2);margin-bottom:18px;}

/* ---------- 证据 ---------- */
.data-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  margin-bottom:56px;
}
.data-cell{background:var(--bg-2);padding:30px 24px;}
.data-cell .val{
  font-size:clamp(26px,3vw,34px);font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.data-cell .val small{font-size:14px;color:var(--text-3);margin-left:4px;font-weight:500;}
.data-cell .txt{font-size:14px;color:var(--text-2);margin-top:8px;line-height:1.7;}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.quote-card{
  position:relative;
  padding:28px 26px;
  border-radius:var(--r);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.quote-card::before{
  content:"";position:absolute;top:22px;left:26px;width:3px;height:28px;border-radius:2px;
  background:linear-gradient(180deg,var(--brand),rgba(31,224,192,.08));
}
.quote-card:nth-child(2){transform:translateY(24px);}
.quote-card blockquote{
  margin:0 0 18px;padding-left:16px;
  font-size:15px;line-height:1.8;color:var(--text);
}
.quote-meta{padding-left:16px;font-size:13px;color:var(--text-3);line-height:1.7;}
.quote-meta strong{color:var(--text-2);font-weight:600;}

/* ---------- 方案 ---------- */
.price-grid{
  display:grid;grid-template-columns:1fr 1.28fr 1fr;gap:24px;align-items:stretch;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:72px 72px;
  padding:8px;border-radius:var(--r-lg);
}
.plan{
  position:relative;display:flex;flex-direction:column;
  padding:32px 28px;
  border-radius:var(--r);
  background:var(--bg-2);
  border:1px solid var(--line);
  transition:transform .22s ease-out,border-color .22s ease-out;
}
.plan:hover{transform:translateY(-2px);border-color:rgba(31,224,192,.35);}
.plan-featured{
  background:var(--bg-3);
  border-color:rgba(31,224,192,.55);
  box-shadow:0 10px 40px -18px rgba(31,224,192,.4),inset 0 1px 0 rgba(255,255,255,.06);
}
.plan-flag{
  position:absolute;top:-11px;right:24px;
  height:24px;padding:0 12px;display:inline-flex;align-items:center;
  border-radius:var(--r-xs);font-size:12px;font-weight:700;
  background:var(--brand);color:#04121A;letter-spacing:.04em;
}
.plan h3{font-size:20px;margin-bottom:6px;}
.plan .plan-note{font-size:13px;color:var(--text-3);line-height:1.7;min-height:44px;}
.plan-price{
  margin:22px 0 4px;font-size:34px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1.1;
}
.plan-price span{font-size:14px;color:var(--text-3);font-weight:500;margin-left:6px;}
.plan-list{margin:24px 0 28px;display:flex;flex-direction:column;gap:12px;}
.plan-list li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--text-2);}
.plan-list li svg{width:16px;height:16px;flex:0 0 auto;margin-top:5px;color:var(--brand);}
.plan .btn{margin-top:auto;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:800px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  min-height:64px;padding:18px 0;cursor:pointer;list-style:none;
  font-size:18px;font-weight:600;color:var(--text);
  transition:color .22s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand);}
.faq-item summary .faq-icon{
  position:relative;width:20px;height:20px;flex:0 0 auto;
  transition:transform .24s ease-out;
}
.faq-item summary .faq-icon::before,
.faq-item summary .faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
}
.faq-item summary .faq-icon::before{left:0;top:9px;width:20px;height:2px;}
.faq-item summary .faq-icon::after{left:9px;top:0;width:2px;height:20px;transition:opacity .24s ease-out;}
.faq-item[open] summary .faq-icon{transform:rotate(180deg);}
.faq-item[open] summary .faq-icon::after{opacity:0;}
.faq-answer{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:700px;}

/* ---------- CTA 带 ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  padding:36px 36px;
  border-radius:var(--r-lg);
  background:var(--glass);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card),inset 0 1px 0 rgba(255,255,255,.06);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--text-2);max-width:620px;}

/* ---------- Footer ---------- */
.site-footer{
  margin-top:0;padding:72px 0 32px;
  background:var(--bg-2);
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;
  padding-bottom:48px;
}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-2);max-width:320px;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:18px;letter-spacing:.06em;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand);}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.9;}
.footer-social{display:flex;gap:12px;margin-top:18px;}
.footer-social a{
  width:36px;height:36px;border-radius:var(--r-sm);
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  color:var(--text-3);
}
.footer-social a:hover{color:var(--brand);border-color:rgba(31,224,192,.45);}
.footer-social svg{width:16px;height:16px;}
.footer-bottom{
  border-top:1px solid var(--line);padding-top:24px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:130;
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 20px;border-radius:999px;
  background:var(--brand);color:#04121A;font-size:15px;font-weight:700;
  box-shadow:0 10px 30px rgba(31,224,192,.28);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .24s ease-out,transform .24s ease-out,background .22s ease-out;
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{background:var(--brand-hover);}
.float-cta svg{width:18px;height:18px;}
body.at-footer .float-cta{opacity:.6;}

/* ---------- 移动抽屉 ---------- */
.drawer{
  position:fixed;inset:0;z-index:150;
  background:rgba(7,14,24,.96);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  display:flex;flex-direction:column;
  padding:24px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .24s ease-out,transform .24s ease-out,visibility .24s;
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;}
.drawer-close{
  width:40px;height:40px;border-radius:var(--r-md);border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;color:var(--text-2);
}
.drawer-close svg{width:18px;height:18px;}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  font-size:20px;font-weight:600;color:var(--text);
  padding:20px 0;border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--brand);}
.drawer-cta{margin-top:32px;}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){
  .container{max-width:1140px;}
}
@media (max-width:1199px){
  .container{max-width:940px;}
  .section{padding:96px 0;}
  .hero{padding:160px 0 104px;}
  .hero-grid{gap:40px;}
  .feature-strip:nth-child(even){padding-left:32px;}
}
@media (max-width:1023px){
  .container{max-width:100%;}
  .section{padding:80px 0;}
  .hero-grid{grid-template-columns:1fr;gap:48px;}
  .hero{padding:148px 0 96px;}
  .demo-grid{grid-template-columns:1fr;gap:40px;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .data-strip{grid-template-columns:repeat(2,1fr);}
  .quote-grid{grid-template-columns:1fr;gap:20px;}
  .quote-card:nth-child(2){transform:none;}
  .price-grid{grid-template-columns:1fr 1fr;gap:20px;}
  .plan-featured{grid-column:1 / -1;order:-1;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:860px){
  .nav-desktop{display:none;}
  .header-right .btn-ghost{display:none;}
  .nav-toggle{display:flex;}
}
@media (max-width:767px){
  :root{--sp:16px;}
  .section{padding:64px 0;}
  .section-head{margin-bottom:32px;}
  .hero{padding:128px 0 76px;background-position:center 40%;}
  .hero-sub{font-size:16px;}
  .hero-metrics{gap:28px;margin-top:34px;}
  .entry-panel{padding:26px 20px 24px;}
  .entry-panel::before{left:20px;top:22px;}
  .features-grid{grid-template-columns:1fr;}
  .feature-strip:nth-child(even){padding-left:0;}
  .feature-strip{padding:26px 0;gap:18px;}
  .feature-num{font-size:32px;}
  .news-grid{grid-template-columns:1fr;}
  .data-strip{grid-template-columns:1fr;}
  .price-grid{grid-template-columns:1fr;background-size:56px 56px;}
  .plan-featured{order:0;}
  .cta-band{padding:28px 22px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .float-cta{right:16px;bottom:16px;width:52px;height:52px;padding:0;justify-content:center;border-radius:50%;}
  .float-cta span{display:none;}
  .scroll-indicator{display:none;}
  .faq-item summary{font-size:16px;min-height:56px;}
}
@media (max-width:480px){
  .hero h1{font-size:28px;}
  .section-title{font-size:22px;}
  .hero-actions .btn{width:100%;}
  .window-bar span{display:none;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .scroll-indicator{display:none;}
}

/* roulang page: article */
:root{
  --bg:#070E18;
  --bg-2:#0B1522;
  --bg-3:#101C2C;
  --brand:#1FE0C0;
  --brand-hover:#4BF0D4;
  --brand-press:#12B79C;
  --brand-soft:rgba(31,224,192,.12);
  --accent:#FF7A3C;
  --accent-soft:rgba(255,122,60,.12);
  --text:#E6EDF7;
  --text-2:#9BA9C0;
  --text-3:#66748C;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass:rgba(255,255,255,.045);
  --ok:#35D07F;
  --warn:#FFB020;
  --error:#FF5C5C;
  --radius-s:8px;
  --radius:10px;
  --radius-m:14px;
  --radius-l:20px;
  --shadow:0 18px 40px -22px rgba(0,0,0,.85);
  --shadow-brand:0 8px 24px rgba(31,224,192,.28);
  --shadow-brand-hover:0 12px 36px rgba(31,224,192,.4);
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"SF Mono",ui-monospace,"JetBrains Mono",Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::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:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease),opacity .22s var(--ease)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0;padding:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.32}
p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}
::selection{background:rgba(31,224,192,.28)}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- layout ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:104px 0}
.section-tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-title{font-size:clamp(24px,3.4vw,36px);display:flex;align-items:center;gap:12px}
.section-title::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--brand);flex:0 0 auto;box-shadow:0 0 10px var(--brand)}
.section-sub{color:var(--text-2);font-size:15px;margin-top:12px;max-width:640px}
.link-arrow{color:var(--brand);font-size:15px;font-weight:500;display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
.link-arrow svg{transition:transform .22s var(--ease)}
.link-arrow:hover{color:var(--brand-hover)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:72px;
  background:rgba(7,14,24,.86);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:height .24s var(--ease),background-color .24s var(--ease);
}
.site-header.is-scrolled{height:60px;background:rgba(7,14,24,.94)}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:-.01em;color:var(--text)}
.logo-mark{
  width:34px;height:34px;flex:0 0 auto;display:grid;place-items:center;
  border-radius:10px;border:1px solid rgba(31,224,192,.34);
  background:var(--brand-soft);color:var(--brand);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.logo-mark svg{width:19px;height:19px}
.logo-text{white-space:nowrap}
.nav-desktop{display:flex;align-items:center;gap:32px}
.nav-link{
  position:relative;font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 2px;border-radius:var(--radius-s);
}
.nav-link:hover{color:var(--text)}
.nav-link.active{color:var(--brand);background:var(--brand-soft);border:1px solid rgba(31,224,192,.24);padding:5px 12px}
.header-right{display:flex;align-items:center;gap:12px}

/* ---------- buttons ---------- */
.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:600;line-height:1;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
  white-space:nowrap;
}
.btn svg{width:16px;height:16px}
.btn-primary{background:var(--brand);color:#04140F;box-shadow:var(--shadow-brand)}
.btn-primary:hover{background:var(--brand-hover);box-shadow:var(--shadow-brand-hover);transform:translateY(-2px)}
.btn-primary:active{background:var(--brand-press);transform:translateY(0)}
.btn-ghost{border:1px solid var(--line-strong);color:var(--text)}
.btn-ghost:hover{border-color:rgba(31,224,192,.55);color:var(--brand);transform:translateY(-2px)}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:var(--radius-s)}
.btn-lg{height:50px;padding:0 28px;font-size:16px}
.btn-block{width:100%}

/* ---------- progress / drawer / floating ---------- */
.progress-bar{position:fixed;top:0;left:0;height:2px;width:0;z-index:80;background:linear-gradient(90deg,var(--brand),var(--accent));transition:width .12s linear}
.nav-toggle{display:none;width:40px;height:40px;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:var(--radius-s);color:var(--text-2)}
.nav-toggle:hover{color:var(--brand);border-color:rgba(31,224,192,.4)}
.drawer{
  position:fixed;inset:0;z-index:90;display:flex;flex-direction:column;
  background:rgba(7,14,24,.96);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  padding:20px 24px 40px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.drawer.is-open{opacity:1;visibility:visible;transform:none}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.drawer-close{width:40px;height:40px;display:grid;place-items:center;border:1px solid var(--line);border-radius:var(--radius-s);color:var(--text-2)}
.drawer-close:hover{color:var(--brand);border-color:rgba(31,224,192,.4)}
.drawer-nav a{
  display:block;font-size:20px;font-weight:600;color:var(--text-2);
  padding:20px 0;border-bottom:1px solid var(--line);
}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--brand)}
.drawer-cta{margin-top:32px}
.float-cta{
  position:fixed;right:24px;bottom:calc(16px + env(safe-area-inset-bottom));
  z-index:70;display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 20px;border-radius:999px;
  background:var(--brand);color:#04140F;font-size:14px;font-weight:700;
  box-shadow:var(--shadow-brand);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s,background-color .22s var(--ease);
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:none}
.float-cta.is-dim{opacity:.6}
.float-cta:hover{background:var(--brand-hover)}

/* ---------- article head ---------- */
.page-top{padding-top:72px}
.crumbs{padding:24px 0 0;font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs a{color:var(--text-3)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:rgba(255,255,255,.2)}
.crumbs .current{color:var(--text-2);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.article-hero{padding:40px 0 32px;border-bottom:1px solid var(--line);position:relative}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(560px 220px at 12% 0%,rgba(31,224,192,.10),transparent 70%),
    radial-gradient(420px 200px at 92% 10%,rgba(255,122,60,.07),transparent 70%);
  opacity:.9;
}
.article-hero>*{position:relative;z-index:1}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:6px;
  font-size:12px;font-weight:600;letter-spacing:.02em;
  background:var(--accent-soft);color:var(--accent);border:1px solid rgba(255,122,60,.28);
}
.badge-cyan{background:var(--brand-soft);color:var(--brand);border-color:rgba(31,224,192,.28)}
.article-title{font-size:clamp(26px,4vw,40px);line-height:1.32;margin:20px 0 20px;max-width:920px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-3);letter-spacing:.02em}
.article-meta .dot{color:rgba(255,255,255,.2)}
.article-cover{margin-top:32px;border-radius:var(--radius-m);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-cover figcaption{font-size:13px;color:var(--text-3);text-align:center;padding:12px 16px 0}

/* ---------- prose ---------- */
.article-body{padding:56px 0 40px}
.prose{max-width:800px;margin:0 auto;font-size:16.5px;line-height:1.9;color:var(--text)}
.prose p{margin:0 0 1.2em}
.prose h2{
  font-size:clamp(21px,2.6vw,27px);line-height:1.4;margin:1.9em 0 .9em;
  padding-left:16px;position:relative;
}
.prose h2::before{content:"";position:absolute;left:0;top:.16em;width:3px;height:1em;border-radius:2px;background:var(--brand);box-shadow:0 0 12px rgba(31,224,192,.5)}
.prose h3{font-size:19px;margin:1.6em 0 .7em;color:var(--text)}
.prose ul,.prose ol{margin:0 0 1.4em;padding-left:0}
.prose li{position:relative;padding-left:22px;margin-bottom:.6em;color:var(--text-2)}
.prose li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:2px;background:var(--brand)}
.prose ol{counter-reset:prose-counter}
.prose ol li::before{
  counter-increment:prose-counter;content:counter(prose-counter);
  width:auto;height:auto;background:none;color:var(--brand);
  font-family:var(--mono);font-size:13px;font-weight:700;top:0;
}
.prose blockquote{
  margin:1.8em 0;padding:20px 22px;border-left:3px solid var(--brand);
  border-radius:0 var(--radius-m) var(--radius-m) 0;
  background:var(--glass);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  color:var(--text-2);font-size:15.5px;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:var(--radius-m);margin:1.6em auto;border:1px solid var(--line)}
.prose figure{margin:1.8em 0}
.prose figure figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.prose a{color:var(--brand);border-bottom:1px solid rgba(31,224,192,.35)}
.prose a:hover{color:var(--brand-hover)}
.prose strong{color:var(--text);font-weight:600}
.prose hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
.prose table{width:100%;border-collapse:collapse;margin:1.8em 0;font-size:14.5px;border:1px solid var(--line);border-radius:var(--radius-m);overflow:hidden}
.prose thead th{background:rgba(31,224,192,.08);color:var(--text);font-weight:600;text-align:left;padding:12px 14px;border-bottom:1px solid var(--line)}
.prose tbody td{padding:12px 14px;color:var(--text-2);border-bottom:1px solid var(--line)}
.prose tbody tr:nth-child(even){background:rgba(255,255,255,.022)}
.prose tbody tr:last-child td{border-bottom:0}
.prose code{font-family:var(--mono);font-size:.9em;background:rgba(255,255,255,.06);padding:2px 6px;border-radius:5px;color:var(--brand)}

/* ---------- article footer blocks ---------- */
.article-foot{max-width:800px;margin:0 auto;padding-top:40px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.tag{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:13px;color:var(--text-2);border:1px solid var(--line);background:rgba(255,255,255,.03)}
.tag:hover{color:var(--brand);border-color:rgba(31,224,192,.4)}
.share-row{display:flex;align-items:center;gap:14px;margin-bottom:32px}
.share-row span{font-size:13px;color:var(--text-3)}
.share-row a{width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--line);border-radius:var(--radius-s);color:var(--text-3)}
.share-row a:hover{color:var(--brand);border-color:rgba(31,224,192,.4)}
.share-row svg{width:17px;height:17px}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:32px}
.post-nav a{
  display:block;padding:16px 18px;border:1px solid var(--line);border-radius:var(--radius-m);
  background:var(--bg-2);transition:transform .22s var(--ease),border-color .22s var(--ease);
}
.post-nav a:hover{transform:translateY(-2px);border-color:rgba(31,224,192,.4)}
.post-nav .label{font-size:13px;color:var(--text-3);display:block;margin-bottom:6px}
.post-nav .title{font-size:15px;font-weight:600;color:var(--text);display:block}
.back-row{text-align:center}

/* ---------- empty state ---------- */
.empty{
  max-width:800px;margin:0 auto;text-align:center;padding:56px 24px;
  border:1px dashed var(--line-strong);border-radius:var(--radius-m);background:var(--bg-2);
}
.empty svg{width:48px;height:48px;color:var(--text-3);margin:0 auto 18px}
.empty h2{font-size:22px;margin-bottom:10px}
.empty p{color:var(--text-2);font-size:14px;margin-bottom:22px}

/* ---------- recommend ---------- */
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  position:relative;display:flex;flex-direction:column;overflow:hidden;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-m);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card::before{content:"";position:absolute;left:0;top:18px;width:3px;height:28px;border-radius:0 2px 2px 0;background:var(--brand);opacity:.9}
.card:hover{transform:translateY(-2px);border-color:rgba(31,224,192,.38);box-shadow:var(--shadow)}
.card-media{overflow:hidden}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-text{font-size:14px;line-height:1.7;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-date{font-size:13px;color:var(--text-3);margin-top:auto}

/* ---------- cta band & footer ---------- */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:28px 32px;border-radius:var(--radius-m);
  background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
}
.cta-band h2{font-size:clamp(19px,2.4vw,24px)}
.site-footer{border-top:1px solid var(--line);background:var(--bg-2);padding:72px 0 0;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand p{font-size:14px;color:var(--text-2);margin:18px 0 20px;max-width:320px;line-height:1.8}
.footer-social{display:flex;gap:10px}
.footer-social a{width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--line);border-radius:var(--radius-s);color:var(--text-3)}
.footer-social a:hover{color:var(--brand);border-color:rgba(31,224,192,.4)}
.footer-social svg{width:17px;height:17px}
.footer-col h4{font-size:15px;margin-bottom:18px}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a,.footer-col p{font-size:14px;color:var(--text-2);line-height:1.8}
.footer-col ul a:hover{color:var(--brand)}
.footer-bottom{
  margin-top:56px;padding:24px 0;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}
.footer-bottom a{color:var(--text-2)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .container{max-width:1100px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .footer-col:last-child{grid-column:1 / -1}
}
@media (max-width:1023px){
  .container{max-width:940px;padding:0 20px}
  .section{padding:80px 0}
  .rec-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:64px 0}
  .nav-desktop{display:none}
  .nav-toggle{display:inline-flex}
  .header-right .btn-ghost{display:none}
  .section-head{flex-direction:column;align-items:flex-start;gap:16px}
  .page-top{padding-top:72px}
  .article-body{padding:40px 0 32px}
  .prose{font-size:16px}
  .post-nav{grid-template-columns:1fr}
  .rec-grid{grid-template-columns:1fr}
  .cta-band{flex-direction:column;align-items:flex-start;padding:24px}
  .float-cta{padding:0;width:52px;height:52px;justify-content:center;border-radius:50%}
  .float-cta span{display:none}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:480px){
  .article-title{font-size:24px}
  .section{padding:56px 0}
  .prose{font-size:15.5px}
  .crumbs .current{max-width:180px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --bg:#070E18;
  --bg-2:#0B1522;
  --bg-3:#101C2C;
  --brand:#1FE0C0;
  --brand-hover:#4BF0D4;
  --brand-press:#12B79C;
  --brand-soft:rgba(31,224,192,.12);
  --brand-line:rgba(31,224,192,.28);
  --accent:#FF7A3C;
  --accent-soft:rgba(255,122,60,.12);
  --text:#E6EDF7;
  --text-2:#9BA9C0;
  --text-3:#66748C;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.16);
  --glass:rgba(255,255,255,.045);
  --ok:#35D07F;
  --warn:#FFB020;
  --err:#FF5C5C;
  --r-s:8px;
  --r:10px;
  --r-l:14px;
  --shadow:0 18px 40px -22px rgba(0,0,0,.85);
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::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:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;height:auto;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px;}
::selection{background:rgba(31,224,192,.28);color:#fff;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 滚动进度条 ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;height:2px;width:0;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  z-index:120;transition:width .1s linear;
}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:72px;
  background:rgba(7,14,24,.55);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:height .24s var(--ease),background .24s var(--ease);
}
.site-header.is-scrolled{
  height:60px;
  background:rgba(7,14,24,.78);
}
.header-inner{
  height:100%;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:30px;height:30px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--brand);
  background:rgba(31,224,192,.08);
  border:1px solid var(--brand-line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.logo-mark svg{width:18px;height:18px;}
.logo-text{font-size:18px;font-weight:700;letter-spacing:.005em;color:var(--text);white-space:nowrap;}
.nav-desktop{display:flex;align-items:center;gap:32px;}
.nav-link{
  position:relative;
  font-size:15px;font-weight:500;color:var(--text-2);
  padding:6px 2px;
  transition:color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--text);}
.nav-link.active{color:var(--brand);}
.nav-link.active::after{transform:scaleX(1);}
.header-right{display:flex;align-items:center;gap:12px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),
             background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-primary{
  background:var(--brand);color:#04140F;
  box-shadow:0 8px 24px rgba(31,224,192,.22);
}
.btn-primary:hover{
  background:var(--brand-hover);
  transform:translateY(-2px);
  box-shadow:0 12px 36px rgba(31,224,192,.34);
}
.btn-primary:active{background:var(--brand-press);transform:translateY(0);}
.btn-ghost{
  background:transparent;color:var(--text);
  border-color:var(--line-2);
}
.btn-ghost:hover{
  border-color:var(--brand);color:var(--brand);
  transform:translateY(-2px);
}
.btn-icon{
  width:38px;height:38px;padding:0;border-radius:var(--r);
  border:1px solid var(--line-2);color:var(--text-2);
}
.btn-icon:hover{color:var(--brand);border-color:var(--brand);}

/* ---------- 移动端抽屉 ---------- */
.nav-toggle{
  display:none;
  width:38px;height:38px;border-radius:var(--r);
  border:1px solid var(--line-2);color:var(--text);
  align-items:center;justify-content:center;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand);}
.drawer{
  position:fixed;inset:0;z-index:110;
  background:rgba(7,14,24,.96);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  padding:88px 24px 32px;
  display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.drawer.open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-close{
  position:absolute;top:18px;right:20px;
  width:40px;height:40px;border-radius:var(--r);
  border:1px solid var(--line-2);color:var(--text);
  display:flex;align-items:center;justify-content:center;
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  font-size:20px;line-height:1.5;padding:18px 4px;
  border-bottom:1px solid var(--line);color:var(--text-2);
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.drawer-nav a.active{color:var(--brand);}
.drawer-nav a:hover{color:var(--text);padding-left:8px;}
.drawer-cta{margin-top:28px;}

/* ---------- 分类页 Hero ---------- */
.cat-hero{
  position:relative;
  min-height:280px;
  display:flex;align-items:flex-end;
  padding:120px 0 40px;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center 34%;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 340px at 18% 100%,rgba(31,224,192,.16),transparent 62%),
    radial-gradient(620px 280px at 84% 0%,rgba(255,122,60,.10),transparent 66%),
    linear-gradient(180deg,rgba(7,14,24,.86) 0%,rgba(7,14,24,.72) 46%,rgba(7,14,24,.94) 100%);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;opacity:.03;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:64px 64px;
}
.cat-hero .container{position:relative;z-index:2;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  height:24px;padding:0 12px;border-radius:6px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  color:var(--brand);
  background:var(--brand-soft);
  border:1px solid var(--brand-line);
  margin-bottom:16px;
}
.hero-tag::before{
  content:"";width:4px;height:4px;border-radius:50%;background:var(--brand);
}
.cat-hero h1{
  font-size:clamp(26px,3.6vw,38px);
  line-height:1.3;font-weight:700;letter-spacing:-.01em;
  max-width:820px;
}
.cat-hero .hero-sub{
  margin-top:14px;
  font-size:15px;color:var(--text-2);
  max-width:640px;letter-spacing:.01em;
}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--text-3);
  margin-bottom:18px;
}
.breadcrumb a{color:var(--text-3);transition:color .2s var(--ease);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb span.sep{color:var(--text-3);opacity:.7;}
.breadcrumb .cur{color:var(--text-2);}

/* ---------- 主体 3/9 ---------- */
.cat-body{padding:88px 0 24px;}
.cat-grid{
  display:grid;
  grid-template-columns:3fr 9fr;
  gap:24px;
  align-items:start;
}
.cat-toc{
  position:sticky;top:96px;
  padding:20px 18px;
  border-radius:var(--r-l);
  background:var(--bg-2);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.toc-label{
  display:flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--text-3);
  text-transform:uppercase;margin-bottom:14px;
}
.toc-label::before{
  content:"";width:4px;height:4px;border-radius:50%;background:var(--brand);
}
.toc-list{display:flex;flex-direction:column;}
.toc-link{
  position:relative;
  display:block;padding:11px 0 11px 16px;
  font-size:14px;color:var(--text-2);
  border-bottom:1px solid var(--line);
  transition:color .2s var(--ease);
}
.toc-list .toc-link:last-child{border-bottom:0;}
.toc-link::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:5px;height:5px;border-radius:50%;
  background:var(--text-3);opacity:.4;
  transition:background .2s var(--ease),opacity .2s var(--ease),box-shadow .2s var(--ease);
}
.toc-link:hover{color:var(--text);}
.toc-link.active{color:var(--brand);}
.toc-link.active::before{
  background:var(--brand);opacity:1;
  box-shadow:0 0 0 4px rgba(31,224,192,.14);
}

.cat-content{display:flex;flex-direction:column;gap:24px;}
.cat-group{
  position:relative;
  padding:32px;
  border-radius:var(--r-l);
  background:var(--bg-2);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  scroll-margin-top:96px;
  transition:border-color .22s var(--ease);
}
.cat-group:hover{border-color:rgba(255,255,255,.13);}
.cat-group::before{
  content:"";position:absolute;left:0;top:32px;width:3px;height:28px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.cat-group h2{
  font-size:clamp(20px,2.2vw,26px);
  line-height:1.35;font-weight:700;letter-spacing:-.01em;
  padding-left:14px;
}
.cat-group > p{
  margin-top:12px;
  font-size:15px;color:var(--text-2);line-height:1.85;
}
.entry-list{margin-top:22px;display:flex;flex-direction:column;}
.entry-item{
  position:relative;
  padding:20px 0 20px 0;
  border-top:1px solid var(--line);
}
.entry-item:first-child{border-top:1px solid var(--line);}
.entry-item h3{
  font-size:17px;font-weight:600;letter-spacing:0;
  display:flex;align-items:center;gap:10px;
}
.entry-item h3::before{
  content:"";width:6px;height:6px;border-radius:2px;background:var(--brand);
  flex-shrink:0;
}
.entry-item p{
  margin-top:8px;padding-left:16px;
  font-size:14px;line-height:1.75;color:var(--text-2);
}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  margin-top:10px;padding-left:16px;
  font-size:14px;font-weight:600;color:var(--brand);
  transition:color .2s var(--ease);
}
.link-arrow i{
  font-style:normal;display:inline-block;
  transition:transform .22s var(--ease);
}
.link-arrow:hover{color:var(--brand-hover);}
.link-arrow:hover i{transform:translateX(4px);}

/* ---------- 数据条 ---------- */
.stat-strip{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:16px;margin-top:24px;
}
.stat-cell{
  padding:18px 20px;border-radius:var(--r);
  background:var(--bg-3);
  border:1px solid var(--line);
}
.stat-cell .stat-num{
  font-size:26px;font-weight:700;color:var(--accent);
  font-variant-numeric:tabular-nums;
  line-height:1.2;
}
.stat-cell .stat-label{
  margin-top:6px;font-size:13px;color:var(--text-3);letter-spacing:.01em;
}

/* ---------- 交叉链接 ---------- */
.cross-links{padding:72px 0 56px;}
.section-head{margin-bottom:28px;}
.section-head .eyebrow{
  display:flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;color:var(--text-3);
  margin-bottom:10px;
}
.section-head .eyebrow::before{
  content:"";width:4px;height:4px;border-radius:50%;background:var(--brand);
}
.section-head h2{
  font-size:clamp(22px,2.6vw,30px);
  font-weight:700;letter-spacing:-.01em;line-height:1.3;
}
.cross-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.cross-card{
  position:relative;
  display:block;padding:28px;
  border-radius:var(--r-l);
  background:var(--bg-2);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.cross-card::before{
  content:"";position:absolute;left:0;top:28px;width:3px;height:28px;
  border-radius:0 3px 3px 0;background:var(--brand);
}
.cross-card:hover{
  transform:translateY(-2px);
  border-color:var(--brand-line);
  background:var(--bg-3);
}
.cross-card h3{
  font-size:19px;font-weight:600;padding-left:14px;
}
.cross-card p{
  margin-top:10px;padding-left:14px;
  font-size:14px;line-height:1.75;color:var(--text-2);
}
.cross-card .link-arrow{padding-left:14px;}

/* ---------- CTA 带 ---------- */
.cta-band{padding:0 0 88px;}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:28px 32px;border-radius:var(--r-l);
  background:
    radial-gradient(600px 200px at 8% 0%,rgba(31,224,192,.14),transparent 70%),
    var(--bg-2);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.cta-inner p{
  font-size:18px;font-weight:600;letter-spacing:0;
}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:24px;bottom:calc(24px + env(safe-area-inset-bottom,0px));
  z-index:90;
  display:inline-flex;align-items:center;gap:8px;
  height:48px;padding:0 20px;border-radius:999px;
  background:var(--brand);color:#04140F;
  font-size:14px;font-weight:700;
  box-shadow:0 12px 32px rgba(31,224,192,.3);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
}
.float-cta.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta.dim{opacity:.6;}
.float-cta:hover{background:var(--brand-hover);}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-2);
  padding:72px 0 32px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:32px;
}
.footer-brand p{
  margin-top:16px;font-size:14px;line-height:1.8;color:var(--text-2);
  max-width:320px;
}
.footer-social{display:flex;gap:12px;margin-top:20px;}
.footer-social a{
  width:36px;height:36px;border-radius:var(--r);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line-2);color:var(--text-2);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.footer-social a:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-2px);}
.footer-social svg{width:16px;height:16px;}
.footer-col h4{
  font-size:14px;font-weight:600;color:var(--text);
  letter-spacing:.02em;margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{
  font-size:14px;color:var(--text-2);
  transition:color .2s var(--ease);
}
.footer-col a:hover{color:var(--brand);}
.footer-col p{font-size:14px;line-height:1.85;color:var(--text-2);}
.footer-bottom{
  margin-top:56px;padding-top:24px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{max-width:1100px;}
  .cat-grid{grid-template-columns:3fr 9fr;gap:20px;}
  .cat-group{padding:28px;}
}
@media (max-width:1023px){
  .container{max-width:940px;}
  .nav-desktop{gap:22px;}
  .nav-link{font-size:14px;}
  .cat-grid{grid-template-columns:1fr;gap:24px;}
  .cat-toc{position:static;}
  .cat-body{padding:72px 0 16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .nav-desktop{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-right .btn-sm{display:none;}
  .cat-hero{padding:104px 0 32px;min-height:240px;background-position:center 26%;}
  .cat-body{padding:64px 0 16px;}
  .cat-group{padding:24px;}
  .cat-group::before{top:24px;}
  .stat-strip{grid-template-columns:1fr;}
  .cross-grid{grid-template-columns:1fr;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;margin-top:40px;}
  .float-cta{
    right:16px;bottom:calc(16px + env(safe-area-inset-bottom,0px));
    width:52px;height:52px;padding:0;justify-content:center;border-radius:50%;
  }
  .float-cta span{display:none;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .cat-hero{padding:96px 0 26px;}
  .cat-hero h1{font-size:24px;}
  .cat-group{padding:20px;}
  .entry-item p{padding-left:0;}
  .link-arrow{padding-left:0;}
  .cta-inner p{font-size:16px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important;animation:none !important;}
}

/* roulang page: category2 */
:root{
  --bg:#070E18;
  --bg-2:#0B1522;
  --surface:#101C2C;
  --brand:#1FE0C0;
  --brand-hover:#4BF0D4;
  --brand-press:#12B79C;
  --brand-soft:rgba(31,224,192,.12);
  --accent:#FF7A3C;
  --accent-soft:rgba(255,122,60,.12);
  --ok:#35D07F;
  --warn:#FFB020;
  --err:#FF5C5C;
  --text:#E6EDF7;
  --text-2:#9BA9C0;
  --text-3:#66748C;
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --glass-bg:rgba(255,255,255,.045);
  --radius:14px;
  --radius-sm:10px;
  --radius-xs:6px;
  --shadow:0 18px 40px -22px rgba(0,0,0,.85);
  --container:1200px;
  --section-y:112px;
  --font:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

*,*::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:var(--font);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.drawer-open{overflow:hidden;}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .22s ease,border-color .22s ease,opacity .22s ease;}
a:hover{color:var(--brand-hover);}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.01em;font-weight:700;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

/* ============ 滚动进度条 ============ */
.scroll-progress{
  position:fixed;
  top:0;left:0;
  height:2px;
  width:0;
  background:linear-gradient(90deg,var(--brand),var(--accent));
  z-index:120;
  transition:width .12s linear;
}

/* ============ Header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(7,14,24,.86);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .24s ease,box-shadow .24s ease;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
  transition:height .24s ease;
}
.site-header.is-scrolled{background:rgba(7,14,24,.94);box-shadow:0 12px 30px -24px rgba(0,0,0,.9);}
.site-header.is-scrolled .header-inner{height:60px;}

.logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  font-size:18px;
  color:var(--text);
  white-space:nowrap;
}
.logo:hover{color:var(--text);}
.logo-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:32px;height:32px;
  border-radius:9px;
  border:1px solid var(--brand-soft);
  background:var(--brand-soft);
  color:var(--brand);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
}
.logo-mark svg{width:18px;height:18px;}
.logo-text{letter-spacing:-.01em;}

.nav-desktop{
  display:flex;
  align-items:center;
  gap:32px;
  flex:1 1 auto;
  justify-content:center;
}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--text-2);
  padding:6px 2px;
  border-bottom:2px solid transparent;
}
.nav-link:hover{color:var(--text);}
.nav-link.active{
  color:var(--text);
  border-bottom-color:var(--brand);
}

.header-right{display:flex;align-items:center;gap:12px;}

.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  color:var(--text-2);
  transition:border-color .22s ease,color .22s ease;
}
.nav-toggle:hover{color:var(--text);border-color:var(--line-strong);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-sm);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  white-space:nowrap;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease,background-color .22s ease,color .22s ease;
}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-primary{
  background:var(--brand);
  color:#04201B;
  box-shadow:0 8px 24px -12px rgba(31,224,192,.9);
}
.btn-primary:hover{
  background:var(--brand-hover);
  color:#04201B;
  transform:translateY(-2px);
  box-shadow:0 12px 36px -14px rgba(31,224,192,.95);
}
.btn-primary:active{background:var(--brand-press);transform:translateY(0);}
.btn-ghost{
  border:1px solid var(--line-strong);
  color:var(--text);
  background:rgba(255,255,255,.02);
}
.btn-ghost:hover{
  border-color:var(--brand);
  color:var(--brand-hover);
  transform:translateY(-2px);
}
.btn-arrow{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  font-weight:600;
  color:var(--brand);
}
.btn-arrow svg{transition:transform .22s ease;}
.btn-arrow:hover svg{transform:translateX(4px);}

/* ============ 标签 / 徽章 ============ */
.tag{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 9px;
  border-radius:var(--radius-xs);
  font-size:12px;
  line-height:1;
  letter-spacing:.02em;
  background:var(--accent-soft);
  color:var(--accent);
  border:1px solid rgba(255,122,60,.28);
}
.tag-brand{
  background:var(--brand-soft);
  color:var(--brand);
  border-color:rgba(31,224,192,.28);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--text-3);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:4px;height:4px;
  border-radius:50%;
  background:var(--brand);
}

/* ============ 分类页 Hero ============ */
.hero-cat2{
  position:relative;
  min-height:240px;
  display:flex;
  align-items:center;
  padding:56px 0;
  border-bottom:1px solid var(--line);
  background-image:
    linear-gradient(90deg,rgba(7,14,24,.94) 0%,rgba(7,14,24,.72) 46%,rgba(7,14,24,.42) 100%),
    linear-gradient(180deg,rgba(7,14,24,.55) 0%,rgba(7,14,24,.9) 100%),
    url("/assets/images/backpic/back-2.png");
  background-size:cover,cover,cover;
  background-position:center,center,68% 30%;
  background-repeat:no-repeat;
}
.hero-cat2::after{
  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:64px 64px,64px 64px;
  opacity:.5;
  pointer-events:none;
}
.hero-cat2 .container{position:relative;z-index:2;}
.hero-cat2 h1{
  font-size:clamp(30px,4.6vw,48px);
  line-height:1.25;
  max-width:900px;
  margin-bottom:16px;
}
.hero-cat2 .hero-sub{
  font-size:16px;
  color:var(--text-2);
  max-width:640px;
  margin-bottom:24px;
}
.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:12px 24px;
  align-items:center;
}
.hero-meta span{
  font-size:13px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}

/* ============ 通用板块 ============ */
.section{padding:var(--section-y) 0;}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{margin-bottom:48px;max-width:760px;}
.section-head h2{font-size:clamp(24px,3.4vw,36px);margin:12px 0 16px;}
.section-head p{color:var(--text-2);font-size:16px;}

/* ============ 筛选标签条 ============ */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:40px;
  padding-bottom:24px;
  border-bottom:1px solid var(--line);
}
.filter-chip{
  display:inline-flex;
  align-items:center;
  height:34px;
  padding:0 16px;
  border-radius:999px;
  font-size:14px;
  color:var(--text-2);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  transition:border-color .22s ease,color .22s ease,background-color .22s ease;
}
.filter-chip.is-active{
  color:var(--brand);
  border-color:rgba(31,224,192,.34);
  background:var(--brand-soft);
}
.filter-chip:hover{border-color:var(--line-strong);color:var(--text);}

/* ============ 两列错落卡片流 ============ */
.flow-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
  align-items:start;
}
.flow-col{display:flex;flex-direction:column;gap:24px;}
.flow-col.is-offset{margin-top:40px;}

.flow-card{
  position:relative;
  padding:28px 26px 24px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--surface);
  box-shadow:var(--shadow);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.flow-card::before{
  content:"";
  position:absolute;
  top:26px;left:0;
  width:3px;height:28px;
  border-radius:0 3px 3px 0;
  background:var(--brand);
  opacity:.85;
}
.flow-card:hover{
  transform:translateY(-2px);
  border-color:rgba(31,224,192,.28);
}
.flow-card h3{
  font-size:20px;
  font-weight:600;
  margin-bottom:10px;
  padding-left:14px;
}
.flow-card p{
  font-size:14px;
  line-height:1.8;
  color:var(--text-2);
  padding-left:14px;
  margin-bottom:18px;
}
.flow-card .card-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-left:14px;
  border-top:1px solid var(--line);
  padding-top:16px;
}
.flow-card.is-glass{
  background:var(--glass-bg);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
}
.flow-card.is-accent{
  border-color:rgba(255,122,60,.28);
  background:linear-gradient(180deg,rgba(255,122,60,.06),rgba(16,28,44,1));
}
.flow-card.is-accent::before{background:var(--accent);}
.flow-figure{
  border-radius:12px;
  overflow:hidden;
  border:1px solid var(--line);
  margin-bottom:20px;
}
.flow-figure img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  transition:transform .3s ease;
}
.flow-card:hover .flow-figure img{transform:scale(1.03);}

/* ============ 自查时间线 ============ */
.check-steps{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:0;
  border-top:1px solid var(--line);
}
.check-step{
  padding:32px 24px 28px 0;
  border-right:1px solid var(--line);
}
.check-step:last-child{border-right:0;padding-right:0;}
.check-step .step-no{
  display:block;
  font-size:30px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  color:transparent;
  -webkit-text-stroke:1px rgba(31,224,192,.42);
  margin-bottom:14px;
}
.check-step h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.check-step p{font-size:14px;line-height:1.75;color:var(--text-2);margin:0;}

/* ============ 数据条 ============ */
.stat-row{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
  margin-bottom:56px;
}
.stat-item{
  padding:24px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--bg-2);
}
.stat-item .num{
  display:block;
  font-size:34px;
  font-weight:700;
  font-variant-numeric:tabular-nums;
  color:var(--accent);
  line-height:1.2;
  margin-bottom:8px;
}
.stat-item .desc{font-size:14px;color:var(--text-2);}
.stat-note{
  font-size:13px;
  color:var(--text-3);
  margin-top:-32px;
  margin-bottom:48px;
}

/* ============ 引用 / 提示块 ============ */
.notice{
  position:relative;
  padding:20px 24px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  border-left:3px solid var(--brand);
  background:var(--glass-bg);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06);
  font-size:15px;
  color:var(--text-2);
}
.notice strong{color:var(--text);font-weight:600;}

/* ============ FAQ ============ */
.faq-wrap{max-width:800px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:64px;
  padding:18px 0;
  text-align:left;
  font-size:18px;
  font-weight:600;
  color:var(--text);
  transition:color .22s ease;
}
.faq-q:hover{color:var(--brand-hover);}
.faq-icon{
  position:relative;
  flex:0 0 20px;
  width:20px;height:20px;
  transition:transform .24s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  top:50%;left:50%;
  background:var(--brand);
  transform:translate(-50%,-50%);
  border-radius:2px;
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;transition:opacity .24s ease,transform .24s ease;}
.faq-item.is-open .faq-icon{transform:rotate(180deg);}
.faq-item.is-open .faq-icon::after{opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease;
}
.faq-a p{
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
  padding:0 40px 22px 0;
  margin:0;
}

/* ============ 交叉链接 ============ */
.cross-grid{
  display:grid;
  grid-template-columns:3fr 2fr;
  gap:24px;
  align-items:stretch;
}
.cross-card{
  padding:32px 30px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--surface);
  transition:transform .22s ease,border-color .22s ease;
}
.cross-card:hover{transform:translateY(-2px);border-color:rgba(31,224,192,.28);}
.cross-card h3{font-size:20px;font-weight:600;margin:14px 0 10px;}
.cross-card p{font-size:14px;line-height:1.8;color:var(--text-2);margin-bottom:18px;}
.cross-card.is-glass{
  background:var(--glass-bg);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
}
.anchor-list{display:flex;flex-direction:column;gap:12px;margin-top:18px;}
.anchor-list a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--text-2);
}
.anchor-list a::before{
  content:"";
  width:5px;height:5px;
  border-radius:50%;
  background:var(--brand);
  opacity:.7;
}
.anchor-list a:hover{color:var(--brand-hover);}

/* ============ CTA 带 ============ */
.cta-band{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  padding:32px 36px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--glass-bg);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.06),var(--shadow);
}
.cta-band h2{font-size:22px;font-weight:700;margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--text-2);margin:0;}

/* ============ Footer ============ */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-2);
  padding:72px 0 32px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:32px;
  padding-bottom:48px;
  border-bottom:1px solid var(--line);
}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  color:var(--text-2);
  margin:18px 0 20px;
  max-width:320px;
}
.footer-social{display:flex;gap:12px;}
.footer-social a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;height:36px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  color:var(--text-2);
  transition:border-color .22s ease,color .22s ease,transform .22s ease;
}
.footer-social a:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.footer-social svg{width:17px;height:17px;}
.footer-col h4{
  font-size:15px;
  font-weight:600;
  margin-bottom:18px;
  color:var(--text);
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col li a,.footer-col p{
  font-size:14px;
  color:var(--text-2);
  line-height:1.8;
}
.footer-col li a:hover{color:var(--brand-hover);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-top:24px;
  font-size:13px;
  color:var(--text-3);
  flex-wrap:wrap;
}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:110;
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:48px;
  padding:0 20px;
  border-radius:999px;
  background:var(--brand);
  color:#04201B;
  font-size:14px;
  font-weight:700;
  box-shadow:0 12px 32px -14px rgba(31,224,192,.95);
  opacity:0;
  transform:translateY(16px);
  pointer-events:none;
  transition:opacity .24s ease,transform .24s ease,background-color .22s ease;
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto;}
.float-cta:hover{background:var(--brand-hover);color:#04201B;}
.float-cta.is-faded{opacity:.6;}
.float-cta svg{width:16px;height:16px;}

/* ============ 移动端抽屉 ============ */
.drawer{
  position:fixed;
  inset:0;
  z-index:130;
  background:rgba(7,14,24,.96);
  backdrop-filter:blur(16px);
  display:flex;
  flex-direction:column;
  padding:20px 20px 32px;
  opacity:0;
  visibility:hidden;
  transform:translateY(-8px);
  transition:opacity .24s ease,transform .24s ease,visibility .24s ease;
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.drawer-close{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  color:var(--text-2);
}
.drawer-close:hover{color:var(--text);border-color:var(--line-strong);}
.drawer-nav{display:flex;flex-direction:column;margin-top:12px;}
.drawer-nav a{
  font-size:20px;
  line-height:1.5;
  padding:18px 4px;
  border-bottom:1px solid var(--line);
  color:var(--text-2);
}
.drawer-nav a.active{color:var(--brand);}
.drawer-nav a:hover{color:var(--text);}
.drawer-cta{margin-top:auto;padding-top:24px;}
.drawer-cta .btn{width:100%;}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  :root{--container:1100px;}
}
@media (max-width:1199px){
  :root{--container:940px;--section-y:96px;}
  .check-steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .check-step{border-right:0;border-bottom:1px solid var(--line);padding:28px 24px 26px 0;}
  .check-step:nth-child(odd){border-right:1px solid var(--line);padding-right:24px;}
  .stat-row{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:1023px){
  :root{--section-y:80px;}
  .nav-desktop{display:none;}
  .nav-toggle{display:inline-flex;}
  .header-right .btn-ghost{display:none;}
  .cross-grid{grid-template-columns:1fr;}
}
@media (max-width:767px){
  :root{--section-y:64px;}
  .container{padding:0 16px;}
  .hero-cat2{min-height:0;padding:48px 0;background-position:center,center,62% 26%;}
  .hero-cat2 h1{font-size:clamp(26px,7vw,34px);}
  .flow-grid{grid-template-columns:minmax(0,1fr);}
  .flow-col.is-offset{margin-top:0;}
  .stat-row{grid-template-columns:minmax(0,1fr);gap:16px;}
  .stat-note{margin-top:-24px;margin-bottom:32px;}
  .check-steps{grid-template-columns:minmax(0,1fr);}
  .check-step,.check-step:nth-child(odd){border-right:0;padding:24px 0;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:26px 22px;}
  .cta-band .btn{width:100%;}
  .float-cta{
    width:52px;height:52px;
    padding:0;
    justify-content:center;
    right:16px;
    bottom:16px;
  }
  .float-cta span{display:none;}
  .faq-q{font-size:16px;}
  .faq-a p{padding-right:0;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px;padding-bottom:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}
@media (max-width:480px){
  :root{--section-y:56px;}
  .logo-text{font-size:16px;}
  .hero-cat2 h1{font-size:24px;}
  .flow-card{padding:22px 18px 20px;}
  .flow-card h3{font-size:18px;}
  .stat-item .num{font-size:28px;}
  .cross-card{padding:24px 20px;}
  .cta-band h2{font-size:19px;}
}

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