/* roulang page: index */
:root{
  --ink-900:#070C14;
  --ink-800:#0B1420;
  --surface-glass:rgba(19,31,48,.55);
  --line-soft:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#2FD3C8;
  --primary-deep:#14A79E;
  --accent:#FFB65C;
  --text-hi:#E8EFF7;
  --text-body:#C3CFDD;
  --text-mute:#8DA0B5;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-card:0 18px 44px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --font-num:"Barlow","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text-body);
  font-family:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(720px 460px at 8% 4%, rgba(47,211,200,.10), transparent 62%),
    radial-gradient(520px 380px at 96% 20%, rgba(255,182,92,.06), transparent 68%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--text-hi)}
button{font-family:inherit}
h1,h2,h3,h4{color:var(--text-hi);margin:0;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1320px;margin:0 auto;padding-left:20px;padding-right:20px}
section{position:relative;z-index:1}
.sec{padding:96px 0}
.sec-alt{background:var(--ink-800);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.sec-head h2{font-size:32px;line-height:1.3}
.sec-head .sec-sub{margin-top:10px;color:var(--text-mute);font-size:15px;max-width:640px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:var(--primary);text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--primary),transparent)}

/* ============ 导航 ============ */
.site-header{position:sticky;top:16px;z-index:60;padding:0 16px;transition:top .2s ease}
.nav-cap{
  width:min(1200px,100%);margin:0 auto;display:flex;align-items:center;gap:20px;
  padding:10px 14px 10px 20px;border-radius:var(--r-pill);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line-soft);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  box-shadow:0 18px 44px rgba(0,0,0,.45);
  transition:background .2s ease,box-shadow .2s ease,padding .2s ease;
}
.site-header.is-scrolled .nav-cap{
  background:rgba(7,12,20,.84);
  box-shadow:0 22px 52px rgba(0,0,0,.6);
  padding-top:7px;padding-bottom:7px;
}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand svg{width:34px;height:34px;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:19px;font-weight:700;color:var(--text-hi);letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.12em;color:var(--text-mute);margin-top:3px}
.nav-menu{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-menu .nav-link{
  position:relative;font-size:15px;color:var(--text-body);padding:8px 0;white-space:nowrap;
}
.nav-menu .nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;width:16px;height:2px;border-radius:2px;
  background:var(--primary);transform:translateX(-50%) scaleX(0);transform-origin:center;
  transition:transform .24s cubic-bezier(.2,.7,.3,1);
}
.nav-menu .nav-link:hover{color:var(--text-hi)}
.nav-menu .nav-link:hover::after{transform:translateX(-50%) scaleX(1)}
.nav-menu .nav-link.active{color:var(--primary)}
.nav-menu .nav-link.active::after{transform:translateX(-50%) scaleX(1)}
.nav-cta{flex:0 0 auto}
.nav-toggle{
  display:none;margin-left:auto;width:46px;height:46px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.06);border:1px solid var(--line-soft);color:var(--text-hi);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;transition:transform .2s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--r-pill);font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all .24s cubic-bezier(.2,.7,.3,1);text-align:center}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:var(--ink-900);
  box-shadow:0 8px 24px rgba(47,211,200,.28);
}
.btn-primary:hover{color:var(--ink-900);filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 32px rgba(47,211,200,.45)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 8px rgba(0,0,0,.3)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-body)}
.btn-ghost:hover{background:rgba(255,255,255,.08);color:var(--text-hi);border-color:var(--line-strong)}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:13px;letter-spacing:.04em;color:var(--primary)}
.link-arrow svg{transition:transform .24s cubic-bezier(.2,.7,.3,1)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ============ 徽章 ============ */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.04em;
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(47,211,200,.12);color:var(--primary);border:1px solid rgba(47,211,200,.24);
}
.badge-amber{background:rgba(255,182,92,.12);color:var(--accent);border-color:rgba(255,182,92,.24)}

/* ============ 卡片 ============ */
.glass{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--line-soft);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-card);
  transition:transform .24s cubic-bezier(.2,.7,.3,1),border-color .24s ease,box-shadow .24s ease;
}
.glass:hover{transform:translateY(-4px);border-color:rgba(47,211,200,.34);box-shadow:0 26px 56px rgba(0,0,0,.55)}
.card-pad{padding:26px}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;padding:150px 0 92px}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;filter:blur(2px);transform:scale(1.05)}
.hero-mask{position:absolute;inset:0;
  background:
    radial-gradient(620px 420px at 10% 6%, rgba(47,211,200,.20), transparent 62%),
    radial-gradient(380px 300px at 92% 86%, rgba(255,182,92,.13), transparent 66%),
    linear-gradient(180deg, rgba(7,12,20,.78), rgba(7,12,20,.92));}
.hero-grid{position:absolute;inset:0;opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:24px 24px}
.hero .container{position:relative;z-index:2}
.hero h1{font-size:48px;line-height:1.18;letter-spacing:-.01em;margin:18px 0 18px}
.hero .lead{font-size:19px;color:var(--text-body);max-width:560px;line-height:1.8}
.hero-actions{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap}
.hero-stats{display:flex;flex-wrap:wrap;gap:0;margin-top:38px}
.hero-stats div{padding:0 22px;border-left:1px solid var(--line-soft)}
.hero-stats div:first-child{padding-left:0;border-left:0}
.hero-stats b{display:block;font-family:var(--font-num);font-size:20px;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.4}
.hero-stats span{font-size:13px;color:var(--text-mute)}
.hero-card{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-soft);box-shadow:var(--shadow-card)}
.hero-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-float{
  position:absolute;left:18px;top:18px;display:flex;align-items:center;gap:12px;
  padding:12px 16px;border-radius:var(--r-md);
  background:rgba(7,12,20,.72);border:1px solid var(--line-soft);
  backdrop-filter:blur(12px);
}
.hero-float b{font-family:var(--font-num);font-size:24px;color:var(--accent);font-variant-numeric:tabular-nums}
.hero-float span{font-size:12px;color:var(--text-mute);letter-spacing:.04em}

/* ============ 指标看板 ============ */
.kpi{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.kpi-card{padding:26px 22px;text-align:left}
.kpi-card .num{font-family:var(--font-num);font-size:52px;font-weight:700;line-height:1.05;font-variant-numeric:tabular-nums}
.kpi-card .num.cyan{color:var(--primary)}
.kpi-card .num.amber{color:var(--accent)}
.kpi-card .num small{font-size:20px;margin-left:2px}
.kpi-card h3{font-size:17px;margin:12px 0 6px}
.kpi-card p{font-size:13px;color:var(--text-mute);line-height:1.7}

/* ============ 横向滚动专题 ============ */
.scroller{display:flex;gap:20px;overflow-x:auto;padding-bottom:14px;scroll-snap-type:x mandatory}
.scroller::-webkit-scrollbar{height:6px}
.scroller::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:99px}
.topic-card{flex:0 0 320px;scroll-snap-align:start;border-radius:var(--r-md);overflow:hidden}
.topic-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.topic-card .tc-body{padding:20px}
.topic-card h3{font-size:19px;margin:10px 0 8px}
.topic-card p{font-size:14px;color:var(--text-mute);line-height:1.75}
.update-bar{display:flex;align-items:center;gap:14px;padding:14px 20px;border-radius:var(--r-md);
  background:var(--ink-800);border:1px solid var(--line-soft);margin-bottom:32px;flex-wrap:wrap}
.update-bar .dot{width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px rgba(47,211,200,.16)}
.update-bar p{font-size:14px;color:var(--text-mute)}
.update-bar strong{color:var(--text-hi);font-weight:600}

/* ============ 服务矩阵 ============ */
.matrix-big{position:relative;border-radius:var(--r-lg);overflow:hidden;height:100%;min-height:340px;display:flex;flex-direction:column;justify-content:flex-end}
.matrix-big img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5}
.matrix-big::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,20,.35),rgba(7,12,20,.92))}
.matrix-big .mb-body{position:relative;z-index:2;padding:32px}
.matrix-big .idx{font-family:var(--font-num);font-size:13px;letter-spacing:.14em;color:var(--accent)}
.matrix-big h3{font-size:26px;margin:14px 0 12px}
.matrix-big p{font-size:15px;color:var(--text-body);max-width:460px;margin-bottom:18px}
.mini-card{padding:22px;height:100%;display:flex;flex-direction:column}
.mini-card .idx{font-family:var(--font-num);font-size:13px;letter-spacing:.14em;color:var(--text-mute);font-variant-numeric:tabular-nums;transition:color .24s ease}
.mini-card:hover .idx{color:var(--primary)}
.mini-card .ic{width:42px;height:42px;border-radius:var(--r-sm);display:flex;align-items:center;justify-content:center;
  background:rgba(47,211,200,.1);border:1px solid rgba(47,211,200,.22);color:var(--primary);margin:16px 0 14px}
.mini-card h3{font-size:18px;margin-bottom:8px}
.mini-card p{font-size:14px;color:var(--text-mute);line-height:1.75;flex:1}
.mini-card .link-arrow{margin-top:16px}

/* ============ 对比 ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.cmp-col{padding:28px}
.cmp-col h3{font-size:18px;margin-bottom:22px;display:flex;align-items:center;gap:10px}
.cmp-col h3 i{width:10px;height:10px;border-radius:50%;background:var(--text-mute);font-style:normal}
.cmp-col.best h3 i{background:var(--primary)}
.cmp-row{margin-bottom:18px}
.cmp-row .cr-top{display:flex;justify-content:space-between;font-size:14px;margin-bottom:8px}
.cmp-row .cr-top span{color:var(--text-mute)}
.cmp-row .cr-top b{font-family:var(--font-num);color:var(--text-hi);font-variant-numeric:tabular-nums}
.cmp-bar{height:8px;border-radius:var(--r-pill);background:rgba(255,255,255,.07);overflow:hidden}
.cmp-bar i{display:block;height:100%;border-radius:var(--r-pill);background:rgba(141,160,181,.55)}
.cmp-col.best .cmp-bar i{background:linear-gradient(90deg,var(--primary),var(--accent))}
.cmp-note{font-size:13px;color:var(--text-mute);margin-top:22px}

/* ============ 内容列表 ============ */
.news-card{display:flex;flex-direction:column;height:100%;border-radius:var(--r-md);overflow:hidden}
.news-thumb{position:relative;aspect-ratio:16/9;background:var(--ink-800);overflow:hidden}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s cubic-bezier(.2,.7,.3,1)}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-body{padding:20px;display:flex;flex-direction:column;flex:1}
.news-title{font-size:19px;line-height:1.5;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-desc{font-size:14px;color:var(--text-mute);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.news-meta{display:flex;align-items:center;justify-content:space-between;margin-top:18px;padding-top:14px;border-top:1px solid var(--line-soft);font-size:13px;color:var(--text-mute)}
.news-meta time{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.empty-state{text-align:center;padding:64px 24px;border-radius:var(--r-md);border:1px dashed var(--line-strong);background:rgba(255,255,255,.02)}
.empty-state svg{color:var(--text-mute);margin-bottom:16px}
.empty-state p{color:var(--text-mute);font-size:15px;margin-bottom:14px}

/* ============ 评价 ============ */
.quote{padding:26px;height:100%}
.quote .marks{font-family:var(--font-num);font-size:34px;color:var(--primary);line-height:1}
.quote p{font-size:15px;color:var(--text-body);margin:14px 0 20px;line-height:1.8}
.quote .who{display:flex;align-items:center;gap:12px;padding-top:16px;border-top:1px solid var(--line-soft)}
.quote .who b{font-size:14px;color:var(--text-hi);display:block}
.quote .who span{font-size:12px;color:var(--text-mute)}
.avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  display:flex;align-items:center;justify-content:center;color:var(--ink-900);font-weight:700;font-size:15px;flex:0 0 auto}

/* ============ FAQ ============ */
.faq-aside{position:sticky;top:110px}
.faq-aside h2{font-size:32px;margin-bottom:14px}
.faq-aside p{color:var(--text-mute);font-size:15px;margin-bottom:22px}
.acc .accordion-item{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  border:1px solid var(--line-soft);border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;
}
.acc .accordion-button{
  background:transparent;color:var(--text-body);font-size:16px;font-weight:600;
  padding:18px 22px;box-shadow:none;border-radius:var(--r-md);line-height:1.6;
}
.acc .accordion-button:not(.collapsed){color:var(--text-hi);background:transparent;box-shadow:inset 3px 0 0 var(--primary)}
.acc .accordion-button:focus{box-shadow:none;border-color:transparent;outline:2px solid var(--accent);outline-offset:-2px}
.acc .accordion-button::after{
  content:"+";background-image:none;font-family:var(--font-num);font-size:22px;line-height:1;
  width:auto;height:auto;color:var(--primary);transition:transform .24s ease;transform:rotate(0deg);
}
.acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.acc .accordion-body{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text-body)}

/* ============ 表单 ============ */
.form-card{padding:32px}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;color:var(--text-body);margin-bottom:8px}
.field input,.field textarea{
  width:100%;background:rgba(255,255,255,.04);border:1px solid var(--line-soft);
  border-radius:12px;color:var(--text-hi);font-size:15px;padding:12px 14px;line-height:1.6;
  transition:border-color .2s ease,box-shadow .2s ease;font-family:inherit;
}
.field textarea{min-height:112px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:rgba(141,160,181,.7)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,211,200,.18)}
.field.error input,.field.error textarea{border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,182,92,.14)}
.field .err-msg{display:none;font-size:12px;color:var(--accent);margin-top:6px}
.field.error .err-msg{display:block}
.form-tip{font-size:12px;color:var(--text-mute);margin-top:14px}
.check-list li{position:relative;padding-left:26px;margin-bottom:14px;font-size:15px;color:var(--text-body)}
.check-list li::before{content:"";position:absolute;left:0;top:10px;width:9px;height:9px;border-radius:2px;background:var(--primary)}

/* ============ 页脚 ============ */
.site-footer{background:#050A10;border-top:1px solid var(--line-soft);padding:72px 0 0;position:relative;z-index:1}
.foot-brand p{font-size:14px;color:var(--text-mute);margin:16px 0 18px;max-width:300px;line-height:1.8}
.foot-brand .contact-line{font-size:14px;color:var(--text-body);margin-bottom:8px}
.foot-title{font-size:14px;letter-spacing:.06em;color:var(--text-hi);margin-bottom:18px}
.foot-list li{margin-bottom:12px}
.foot-list a{font-size:14px;color:var(--text-mute)}
.foot-list a:hover{color:var(--primary)}
.foot-bottom{margin-top:56px;padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid var(--line-soft);font-size:12px;color:var(--text-mute)}
.grad-line{height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.14) 50%,transparent)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero h1{font-size:42px}
  .kpi{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  .sec{padding:72px 0}
  .hero{padding:132px 0 72px}
  .hero h1{font-size:36px}
  .hero-card{margin-top:38px}
  .nav-toggle{display:flex}
  .nav-cap{border-radius:20px;flex-wrap:wrap}
  .nav-menu{
    display:none;flex-direction:column;align-items:stretch;gap:0;width:100%;margin:12px 0 4px;
    border-top:1px solid var(--line-soft);padding-top:8px;
  }
  .nav-menu.is-open{display:flex}
  .nav-menu .nav-link{padding:15px 6px;border-bottom:1px solid var(--line-soft);font-size:15px}
  .nav-menu .nav-link::after{display:none}
  .nav-menu .nav-link.active{color:var(--primary)}
  .nav-menu .nav-cta{margin:16px 0 8px;width:100%}
  .sec-head h2{font-size:26px}
  .faq-aside{position:static;margin-bottom:32px}
  .compare{grid-template-columns:1fr}
}
@media (max-width:767px){
  .sec{padding:48px 0}
  .hero{padding:118px 0 56px}
  .hero h1{font-size:29px}
  .hero .lead{font-size:16px}
  .hero-actions .btn{width:100%}
  .hero-stats div{padding:0 14px}
  .hero-stats b{font-size:17px}
  .kpi{grid-template-columns:repeat(2,1fr);gap:14px}
  .kpi-card{padding:20px 16px}
  .kpi-card .num{font-size:36px}
  .topic-card{flex:0 0 260px}
  .sec-head{margin-bottom:26px}
  .form-card{padding:22px}
  .glass:hover,.news-card:hover{transform:none}
  .foot-bottom{flex-direction:column;gap:8px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
/* ================= 设计变量 ================= */
:root{
  --ink-900:#070C14;
  --ink-800:#0B1420;
  --surface-glass:rgba(19,31,48,.55);
  --line-soft:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#2FD3C8;
  --primary-deep:#14A79E;
  --accent:#FFB65C;
  --text-hi:#E8EFF7;
  --text-body:#C3CFDD;
  --text-mute:#8DA0B5;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --font-sans:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Barlow","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
  --shadow-card:0 18px 44px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.06);
  --ease:cubic-bezier(.2,.7,.3,1);
}
/* ================= Bootstrap 变量覆盖 ================= */
:root{
  --bs-body-bg:var(--ink-900);
  --bs-body-color:var(--text-body);
  --bs-body-font-family:var(--font-sans);
  --bs-primary:#2FD3C8;
  --bs-link-color:var(--primary);
  --bs-link-hover-color:var(--text-hi);
  --bs-border-color:var(--line-soft);
  --bs-border-radius:var(--r-md);
}
/* ================= 基础 reset ================= */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--ink-900);color:var(--text-body);
  font-family:var(--font-sans);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--text-hi)}
ul,ol{list-style:none;margin:0;padding:0}
h1,h2,h3,h4,p,figure{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:rgba(47,211,200,.3);color:#fff}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(900px 520px at 8% -6%,rgba(47,211,200,.14),transparent 62%),
    radial-gradient(620px 360px at 96% 10%,rgba(255,182,92,.07),transparent 60%);
}
body::after{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.55) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:24px 24px;
}
/* ================= 容器 ================= */
.container{width:100%;max-width:1320px;margin:0 auto;padding-inline:20px}
@media (min-width:768px){.container{padding-inline:32px}}
/* ================= 阅读进度 ================= */
.read-progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:90;
  background:linear-gradient(90deg,var(--primary),var(--accent));transition:width .1s linear}
/* ================= 导航 ================= */
.site-header{position:sticky;top:0;z-index:70;padding:16px 0 0}
.nav-cap{
  position:relative;width:min(1200px,calc(100% - 32px));margin:0 auto;
  display:flex;align-items:center;gap:24px;padding:10px 14px 10px 20px;
  border-radius:var(--r-pill);background:rgba(11,20,32,.62);
  border:1px solid var(--line-soft);backdrop-filter:blur(16px) saturate(140%);
  transition:background .2s,box-shadow .2s,padding .2s,border-color .2s;
}
.site-header.is-scrolled .nav-cap{
  background:rgba(7,12,20,.86);border-color:var(--line-strong);
  box-shadow:0 16px 40px rgba(0,0,0,.5);padding-block:8px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand svg{width:34px;height:34px;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:19px;font-weight:700;color:var(--text-hi);letter-spacing:-.01em}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.12em;color:var(--text-mute);margin-top:2px}
.nav-menu{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{position:relative;font-size:15px;color:var(--text-body);padding:6px 0;white-space:nowrap}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:-2px;width:0;height:2px;border-radius:2px;
  background:var(--primary);transform:translateX(-50%);transition:width .22s var(--ease);
}
.nav-link:hover{color:var(--text-hi)}
.nav-link:hover::after{width:16px}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{width:16px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:14px;margin-left:auto;position:relative;
  border:1px solid var(--line-soft);background:rgba(255,255,255,.04);cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--text-hi);
  transition:transform .22s var(--ease),background .22s;
}
.nav-toggle span{top:50%;margin-top:-1px;margin-left:-9px}
.nav-toggle span::before{content:"";top:-6px;left:0;margin-left:0}
.nav-toggle span::after{content:"";top:6px;left:0;margin-left:0}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}
@media (max-width:991.98px){
  .nav-toggle{display:block}
  .nav-menu{
    position:absolute;left:12px;right:12px;top:calc(100% + 10px);display:none;
    flex-direction:column;align-items:stretch;gap:0;padding:8px;
    background:rgba(7,12,20,.95);border:1px solid var(--line-soft);border-radius:20px;
    backdrop-filter:blur(18px);box-shadow:0 24px 48px rgba(0,0,0,.55);
  }
  .nav-menu.open{display:flex}
  .nav-link{height:52px;display:flex;align-items:center;padding:0 16px;
    border-bottom:1px solid var(--line-soft);border-radius:12px}
  .nav-link::after{display:none}
  .nav-link.active{background:rgba(47,211,200,.08)}
  .nav-menu .nav-cta{margin:10px 8px 4px;width:auto;justify-content:center}
}
/* ================= 按钮 ================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-pill);cursor:pointer;
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),filter .24s;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{
  --bs-btn-bg:transparent;--bs-btn-border-color:transparent;--bs-btn-hover-bg:transparent;
  --bs-btn-hover-border-color:transparent;--bs-btn-active-bg:transparent;--bs-btn-active-border-color:transparent;
  --bs-btn-color:#04171A;--bs-btn-hover-color:#04171A;--bs-btn-active-color:#04171A;
  --bs-btn-disabled-bg:transparent;--bs-btn-disabled-border-color:transparent;
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:#04171A;box-shadow:0 8px 24px rgba(47,211,200,.28);
}
.btn-primary:hover{color:#04171A;filter:brightness(1.06);transform:translateY(-2px);
  box-shadow:0 12px 32px rgba(47,211,200,.45)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 10px rgba(0,0,0,.35)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-hi)}
.btn-ghost:hover{background:rgba(255,255,255,.08);color:var(--text-hi);transform:translateY(-2px)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.04em;color:var(--primary)}
.link-arrow svg{transition:transform .22s var(--ease)}
.link-arrow:hover{color:var(--primary)}
.link-arrow:hover svg{transform:translateX(4px)}
/* ================= 徽章 ================= */
.chip{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12px;letter-spacing:.04em;
  background:rgba(47,211,200,.12);color:var(--primary);border:1px solid rgba(47,211,200,.24);
}
.chip-amber{background:rgba(255,182,92,.12);color:var(--accent);border-color:rgba(255,182,92,.24)}
/* ================= 文章头部 ================= */
.article-hero{position:relative;padding:36px 0 52px;overflow:hidden;border-bottom:1px solid var(--line-soft)}
.article-hero::before{
  content:"";position:absolute;inset:0;opacity:.34;filter:blur(2px);transform:scale(1.05);
  background:url(/assets/images/backpic/back-2.png) center/cover no-repeat;
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,20,.74),rgba(7,12,20,.93) 62%,var(--ink-900));
}
.article-hero .container{position:relative;z-index:1}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-mute)}
.crumb a{color:var(--text-mute)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{opacity:.5}
.crumb .cur{color:var(--text-body);max-width:46ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero h1{
  font-size:clamp(26px,3.6vw,40px);line-height:1.24;font-weight:700;
  color:var(--text-hi);letter-spacing:-.01em;margin:18px 0 20px;max-width:900px;
}
.meta-line{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;font-size:14px;color:var(--text-mute)}
.meta-line .dot{width:4px;height:4px;border-radius:50%;background:var(--line-strong)}
.time-num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
/* ================= 正文布局 ================= */
.article-main{padding:56px 0 88px;position:relative;z-index:1}
.article-body{max-width:820px}
.prose{font-size:17px;line-height:1.9;color:var(--text-body)}
.prose p{margin:0 0 20px}
.prose h2{
  font-size:26px;line-height:1.35;font-weight:700;color:var(--text-hi);
  margin:40px 0 16px;padding-left:14px;border-left:3px solid var(--primary);
  scroll-margin-top:120px;
}
.prose h3{font-size:20px;line-height:1.45;font-weight:600;color:var(--text-hi);margin:28px 0 12px}
.prose h4{font-size:17px;font-weight:600;color:var(--text-hi);margin:22px 0 10px}
.prose a{color:var(--primary);border-bottom:1px dashed rgba(47,211,200,.5)}
.prose a:hover{color:var(--accent);border-bottom-color:rgba(255,182,92,.6)}
.prose strong{color:var(--text-hi);font-weight:600}
.prose blockquote{
  margin:24px 0;padding:20px 22px;border-radius:var(--r-md);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  border-left:3px solid var(--accent);color:var(--text-hi);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose ul,.prose ol{margin:0 0 20px;padding-left:0}
.prose ul li{position:relative;padding-left:22px;margin:8px 0}
.prose ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:2px;background:var(--primary);
}
.prose ol{list-style:decimal;padding-left:22px}
.prose ol li{margin:8px 0}
.prose ol li::marker{color:var(--primary);font-family:var(--font-num)}
.prose img{border-radius:var(--r-md);margin:24px 0;width:100%}
.prose figure{margin:24px 0}
.prose figcaption{font-size:13px;color:var(--text-mute);text-align:center;margin-top:10px}
.prose table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;margin:24px 0;font-size:15px}
.prose th{background:var(--ink-800);color:var(--text-hi);text-align:left;padding:12px 14px;
  border-bottom:1px solid var(--line-soft);white-space:nowrap}
.prose td{padding:12px 14px;border-bottom:1px solid var(--line-soft)}
.prose hr{border:0;height:1px;margin:36px 0;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.16) 20%,rgba(255,255,255,.16) 80%,transparent)}
.prose h2:first-child,.prose h3:first-child{margin-top:0}
/* 空态 */
.empty-state{
  text-align:center;padding:64px 24px;border-radius:var(--r-lg);
  border:1px dashed var(--line-strong);background:rgba(255,255,255,.02);
}
.empty-state svg{width:40px;height:40px;margin:0 auto 18px;color:var(--primary)}
.empty-state p{font-size:16px;color:var(--text-hi);margin-bottom:16px}
/* ================= 文末区 ================= */
.article-foot{margin-top:48px;padding-top:32px;border-top:1px solid var(--line-soft);max-width:820px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
  font-size:13px;color:var(--text-body);background:rgba(255,255,255,.04);
  border:1px solid var(--line-soft);transition:.22s var(--ease);
}
.tag:hover{color:var(--primary);border-color:rgba(47,211,200,.34);transform:translateY(-2px)}
.grad-line{height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.16) 20%,rgba(255,255,255,.16) 80%,transparent)}
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.post-nav a{
  display:flex;flex-direction:column;gap:8px;padding:18px;border-radius:var(--r-md);
  border:1px solid var(--line-soft);background:rgba(255,255,255,.03);
  transition:transform .24s var(--ease),border-color .24s,box-shadow .24s;
}
.post-nav a:hover{transform:translateY(-4px);border-color:rgba(47,211,200,.34);box-shadow:0 18px 44px rgba(0,0,0,.45)}
.pn-label{font-size:12px;letter-spacing:.04em;color:var(--text-mute)}
.pn-title{font-size:16px;font-weight:600;color:var(--text-hi);line-height:1.6}
@media (max-width:575.98px){.post-nav{grid-template-columns:1fr}}
/* ================= 侧栏 ================= */
.side-card{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  border:1px solid var(--line-soft);border-radius:var(--r-lg);padding:20px;
  backdrop-filter:blur(16px) saturate(140%);box-shadow:var(--shadow-card);
}
.side-card + .side-card{margin-top:24px}
.side-title{font-size:14px;letter-spacing:.06em;font-weight:600;color:var(--text-hi);margin-bottom:14px}
.toc-list a{
  display:block;padding:8px 12px;font-size:14px;line-height:1.6;color:var(--text-mute);
  border-left:2px solid var(--line-soft);border-radius:0 8px 8px 0;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  transition:.22s var(--ease);
}
.toc-list a:hover{color:var(--text-hi);background:rgba(255,255,255,.05)}
.toc-list a.active{color:var(--primary);border-left-color:var(--primary);background:rgba(47,211,200,.07)}
.toc-empty{font-size:13px;color:var(--text-mute);display:none}
.consult-card p{font-size:14px;line-height:1.8;color:var(--text-mute);margin-bottom:16px}
.side-posts li + li{margin-top:10px;padding-top:10px;border-top:1px solid var(--line-soft)}
.side-posts a{display:block;padding:8px 10px;border-radius:var(--r-sm);transition:.22s var(--ease)}
.side-posts a:hover{background:rgba(255,255,255,.05)}
.sp-title{display:block;font-size:15px;color:var(--text-hi);line-height:1.6}
.sp-meta{display:block;font-size:12px;color:var(--text-mute);margin-top:4px;font-family:var(--font-num)}
@media (min-width:992px){.article-side{position:sticky;top:100px}}
@media (max-width:991.98px){
  .article-side{display:flex;flex-direction:column;margin-top:8px}
  .side-card + .side-card{margin-top:16px}
  .side-card .toc-wrap{display:none}
  .side-card.side-toc{display:none}
  .side-card.side-consult{order:2}
  .side-card.side-rec{order:1}
}
/* ================= 相关推荐 ================= */
.rec-section{padding:72px 0;background:var(--ink-800);border-top:1px solid var(--line-soft);position:relative;z-index:1}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:32px}
.sec-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;color:var(--text-hi);letter-spacing:-.01em}
.sec-head p{font-size:14px;color:var(--text-mute);margin-top:10px;max-width:60ch}
.rec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rec-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--line-soft);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  transition:transform .24s var(--ease),border-color .24s,box-shadow .24s;
}
.rec-card:hover{transform:translateY(-4px);border-color:rgba(47,211,200,.34);box-shadow:0 22px 48px rgba(0,0,0,.5)}
.rec-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--ink-800)}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease)}
.rec-card:hover .rec-thumb img{transform:scale(1.05)}
.rec-body{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.rec-body h3{font-size:17px;font-weight:600;line-height:1.55;color:var(--text-hi)}
.rec-body p{font-size:14px;color:var(--text-mute);line-height:1.75}
.rec-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:12px;color:var(--text-mute);font-family:var(--font-num)}
@media (max-width:991.98px){.rec-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:575.98px){.rec-grid{grid-template-columns:1fr}}
/* ================= 转化区 ================= */
.cta-section{padding:80px 0;background:var(--ink-900);border-top:1px solid var(--line-soft);position:relative;z-index:1}
.cta-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.cta-copy h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;color:var(--text-hi);font-weight:700;margin-bottom:16px}
.cta-copy > p{font-size:15px;color:var(--text-mute);margin-bottom:24px;max-width:44ch}
.point-list li{
  position:relative;padding-left:22px;font-size:15px;color:var(--text-body);line-height:1.8;margin-bottom:12px;
}
.point-list li::before{
  content:"";position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:2px;background:var(--primary);
}
.form-card{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line-soft);border-radius:var(--r-lg);padding:28px;
  backdrop-filter:blur(16px) saturate(140%);box-shadow:var(--shadow-card);
}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;letter-spacing:.04em;color:var(--text-mute);margin-bottom:8px}
.field input,.field textarea{
  width:100%;height:46px;padding:0 14px;border-radius:12px;font-size:15px;
  background:rgba(255,255,255,.04);border:1px solid var(--line-soft);color:var(--text-hi);
  outline:none;transition:border-color .2s,box-shadow .2s;
}
.field textarea{height:auto;min-height:110px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:rgba(141,160,181,.7)}
.field input:focus,.field textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,211,200,.18)}
.form-note{font-size:12px;color:var(--text-mute);margin-top:14px;line-height:1.7}
.form-tip{font-size:13px;margin-top:12px;color:var(--primary);display:none}
.form-tip.show{display:block}
@media (max-width:991.98px){.cta-grid{grid-template-columns:1fr;gap:32px}}
/* ================= 页脚 ================= */
.site-footer{background:#050910;border-top:1px solid var(--line-soft);padding:64px 0 24px;position:relative;z-index:1}
.foot-brand .brand{margin-bottom:16px}
.foot-brand p{font-size:14px;color:var(--text-mute);line-height:1.8;max-width:36ch}
.contact-line{font-size:14px;color:var(--text-body);margin-top:8px}
.foot-title{font-size:14px;letter-spacing:.06em;font-weight:600;color:var(--text-hi);margin-bottom:16px}
.foot-list li + li{margin-top:12px}
.foot-list a{font-size:14px;color:var(--text-mute)}
.foot-list a:hover{color:var(--primary)}
.foot-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:20px;font-size:12px;color:var(--text-mute)}
@media (max-width:767.98px){
  body::after{display:none}
  .article-hero{padding:28px 0 40px}
  .article-main{padding:40px 0 64px}
  .rec-section,.cta-section{padding:56px 0}
  .site-footer{padding:48px 0 20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --ink-900:#070C14;
  --ink-800:#0B1420;
  --surface-glass:rgba(19,31,48,.55);
  --line-soft:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#2FD3C8;
  --primary-deep:#14A79E;
  --accent:#FFB65C;
  --text-hi:#E8EFF7;
  --text-body:#C3CFDD;
  --text-mute:#8DA0B5;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --font-sans:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
  --shadow-card:0 18px 44px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.06);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text-body);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--text-hi)}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--text-hi);letter-spacing:-.01em;font-weight:700}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(47,211,200,.28);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

.container{max-width:1320px;padding-left:32px;padding-right:32px}
@media (max-width:1400px){.container{max-width:1240px}}
@media (max-width:768px){.container{padding-left:20px;padding-right:20px}}

/* ============ 导航 ============ */
.site-header{position:sticky;top:16px;z-index:1030;padding:0 16px}
.nav-cap{
  width:min(1200px,calc(100% - 0px));
  margin:0 auto;
  display:flex;align-items:center;gap:24px;
  padding:10px 12px 10px 22px;
  border-radius:var(--r-pill);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--line-soft);
  box-shadow:0 18px 44px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.06);
  transition:background .2s var(--ease),box-shadow .2s var(--ease),padding .2s var(--ease);
}
.site-header.is-scrolled .nav-cap{
  background:rgba(7,12,20,.88);
  box-shadow:0 22px 50px rgba(0,0,0,.6),inset 0 1px 0 rgba(255,255,255,.07);
  padding-top:6px;padding-bottom:6px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand svg{width:34px;height:34px;flex-shrink:0}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:18px;font-weight:700;color:var(--text-hi);letter-spacing:.01em}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.12em;color:var(--text-mute)}
.nav-menu{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{position:relative;font-size:15px;color:var(--text-body);padding:6px 0}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;border-radius:2px;
  background:var(--primary);transform:translateX(-50%);
  transition:width .24s var(--ease);
}
.nav-link:hover{color:var(--text-hi)}
.nav-link:hover::after{width:16px}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{width:16px}
.nav-cta{flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;border:1px solid var(--line-soft);
  border-radius:12px;background:rgba(255,255,255,.04);position:relative;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--text-hi);border-radius:2px;
  transform:translateX(-50%);transition:.24s var(--ease);
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{content:"";left:0;transform:none;top:-6px}
.nav-toggle span::after{cont:"";content:"";left:0;transform:none;top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

@media (max-width:992px){
  .site-header{top:12px;padding:0 12px}
  .nav-cap{width:100%;border-radius:20px;padding:8px 12px 8px 16px}
  .nav-toggle{display:block}
  .nav-menu{
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    flex-direction:column;align-items:stretch;gap:0;margin:0;padding:8px;
    border-radius:20px;border:1px solid var(--line-soft);
    background:rgba(7,12,20,.95);
    backdrop-filter:blur(16px) saturate(140%);
    box-shadow:0 24px 60px rgba(0,0,0,.6);
    display:none;
  }
  .nav-menu.open{display:flex}
  .nav-link{padding:0 14px;height:52px;display:flex;align-items:center;border-bottom:1px solid var(--line-soft)}
  .nav-link::after{display:none}
  .nav-link.active{background:rgba(47,211,200,.08)}
  .nav-cta{margin:12px 8px 4px;justify-content:center}
}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-pill);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-deep));
  color:var(--ink-900);box-shadow:0 8px 24px rgba(47,211,200,.28);
}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 12px 32px rgba(47,211,200,.45);color:var(--ink-900)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 3px 10px rgba(0,0,0,.35)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-body)}
.btn-ghost:hover{background:rgba(255,255,255,.08);color:var(--text-hi);border-color:var(--line-strong);transform:translateY(-2px)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-block{width:100%}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.04em;color:var(--primary);font-weight:600}
.link-arrow svg{width:14px;height:14px;transition:transform .24s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ============ 标签 / 徽章 ============ */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;height:28px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12px;letter-spacing:.04em;color:var(--primary);background:rgba(47,211,200,.12);
  border:1px solid rgba(47,211,200,.24);
}
.badge-soft.is-accent{color:var(--accent);background:rgba(255,182,92,.12);border-color:rgba(255,182,92,.24)}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-alt{background:var(--ink-800)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head h2{font-size:32px;line-height:1.28}
.section-head .section-sub{font-size:14px;color:var(--text-mute);max-width:520px}
.eyebrow{font-size:12px;letter-spacing:.12em;color:var(--primary);text-transform:uppercase;margin-bottom:12px;display:block}
.grad-line{height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.16) 50%,transparent)}
.muted{color:var(--text-mute);font-size:14px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

@media (max-width:992px){.section{padding:72px 0}.section-head h2{font-size:27px}}
@media (max-width:768px){.section{padding:48px 0}.section-head h2{font-size:24px}}

/* ============ 玻璃卡 ============ */
.glass{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--line-soft);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-card);
}

/* ============ 面包屑 ============ */
.crumb-bar{padding:104px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-mute)}
.crumb a{color:var(--text-mute)}
.crumb a:hover{color:var(--text-hi)}
.crumb .sep{opacity:.5}
.crumb .now{color:var(--text-body)}

/* ============ 页头 ============ */
.cat-hero{padding:32px 0 0;position:relative}
.cat-hero .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero-bg{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  padding:56px 48px 52px;
  border:1px solid var(--line-soft);
  background-image:linear-gradient(180deg,rgba(7,12,20,.82),rgba(7,12,20,.92)),url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
}
.hero-bg::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(circle at 12% 8%,rgba(47,211,200,.20),transparent 46%),
                   radial-gradient(circle at 88% 92%,rgba(255,182,92,.14),transparent 40%);
}
.hero-bg::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.05;
  background-image:linear-gradient(0deg,rgba(255,255,255,.5) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:24px 24px;
}
.hero-inner{position:relative;z-index:2}
.cat-hero h1{font-size:46px;line-height:1.18;margin:18px 0 20px;letter-spacing:-.01em}
.cat-hero .hero-lead{font-size:18px;line-height:1.8;color:var(--text-body);max-width:600px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-notes{display:flex;gap:22px;flex-wrap:wrap;margin-top:32px;padding-top:22px;border-top:1px solid var(--line-soft)}
.hero-note{font-size:14px;color:var(--text-mute)}
.hero-note b{display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:22px;color:var(--accent);font-weight:700;letter-spacing:0}
.hero-media{padding:14px;border-radius:var(--r-lg)}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-md)}
.hero-float{
  margin:-34px 0 0 24px;position:relative;z-index:3;display:inline-flex;align-items:center;gap:10px;
  padding:12px 18px;border-radius:var(--r-pill);
  background:rgba(11,20,32,.9);border:1px solid var(--line-strong);
  box-shadow:0 12px 30px rgba(0,0,0,.5);
}
.hero-float .num{font-size:20px;color:var(--accent);font-weight:700}
.hero-float span{font-size:12px;color:var(--text-mute);letter-spacing:.04em}
@media (max-width:992px){
  .cat-hero .hero-grid{grid-template-columns:1fr;gap:32px}
  .cat-hero h1{font-size:32px}
  .hero-bg{padding:36px 24px}
}
@media (max-width:768px){
  .crumb-bar{padding-top:88px}
  .cat-hero h1{font-size:28px}
  .hero-lead{font-size:16px}
  .hero-media img{aspect-ratio:16/9}
}

/* ============ 参数带 ============ */
.strip{background:var(--ink-800);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.strip-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.strip-item{padding:32px 28px;border-right:1px solid var(--line-soft)}
.strip-item:last-child{border-right:none}
.strip-item .num{display:block;font-size:40px;font-weight:700;color:var(--primary);line-height:1.1}
.strip-item:nth-child(even) .num{color:var(--accent)}
.strip-item p{margin:8px 0 0;font-size:13px;color:var(--text-mute);line-height:1.6}
@media (max-width:992px){.strip-grid{grid-template-columns:repeat(2,1fr)}
  .strip-item:nth-child(2){border-right:none}
  .strip-item:nth-child(1),.strip-item:nth-child(2){border-bottom:1px solid var(--line-soft)}
  .strip-item .num{font-size:32px}}
@media (max-width:520px){.strip-item{padding:24px 18px}}

/* ============ 能力卡组 ============ */
.cap-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.cap-card{padding:32px;border-radius:var(--r-lg);transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)}
.cap-card:hover{transform:translateY(-4px);border-color:rgba(47,211,200,.34);box-shadow:0 26px 60px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.07)}
.cap-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(47,211,200,.10);border:1px solid rgba(47,211,200,.22);margin-bottom:18px;
}
.cap-icon svg{width:22px;height:22px;stroke:var(--primary);stroke-width:1.8;fill:none;stroke-linecap:round;stroke-linejoin:round}
.cap-card h3{font-size:21px;margin-bottom:10px}
.cap-card .cap-desc{font-size:15px;color:var(--text-mute);line-height:1.8;margin-bottom:20px}
.spec-list{border-top:1px solid var(--line-soft)}
.spec-row{display:flex;align-items:center;justify-content:space-between;gap:16px;height:36px;border-bottom:1px solid var(--line-soft);font-size:14px}
.spec-row span{color:var(--text-mute)}
.spec-row b{font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--text-hi);font-weight:600}
@media (max-width:768px){.cap-grid{grid-template-columns:1fr}.cap-card{padding:24px}}

/* ============ 流程时间线 ============ */
.flow{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:12px}
.flow::before{
  content:"";position:absolute;left:6%;right:6%;top:11px;height:1px;
  background:linear-gradient(90deg,rgba(47,211,200,.05),rgba(47,211,200,.55),rgba(255,182,92,.5),rgba(255,182,92,.05));
}
.flow-node{position:relative;padding-top:40px}
.flow-dot{
  position:absolute;top:0;left:0;width:22px;height:22px;border-radius:50%;
  background:var(--ink-900);border:2px solid var(--primary);
  box-shadow:0 0 0 6px rgba(47,211,200,.10);
}
.flow-node .step{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;letter-spacing:.08em;color:var(--accent);display:block;margin-bottom:8px}
.flow-node h3{font-size:18px;margin-bottom:8px}
.flow-node p{font-size:14px;color:var(--text-mute);line-height:1.75}
@media (max-width:768px){
  .flow{grid-template-columns:1fr;gap:8px}
  .flow::before{left:11px;right:auto;top:0;bottom:0;width:1px;height:auto;
    background:linear-gradient(180deg,rgba(47,211,200,.05),rgba(47,211,200,.5),rgba(255,182,92,.05))}
  .flow-node{padding:0 0 24px 44px}
  .flow-dot{left:0;top:4px}
}

/* ============ 对照条 ============ */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-col{padding:32px;border-radius:var(--r-lg)}
.compare-col h3{font-size:18px;margin-bottom:6px}
.compare-col .col-note{font-size:13px;color:var(--text-mute);margin-bottom:24px}
.bar-row{margin-bottom:20px}
.bar-row:last-child{margin-bottom:0}
.bar-label{display:flex;justify-content:space-between;font-size:13px;color:var(--text-mute);margin-bottom:8px}
.bar-label b{font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--text-hi);font-weight:600}
.bar-track{height:8px;border-radius:var(--r-pill);background:rgba(255,255,255,.06);overflow:hidden}
.bar-fill{height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,#39485C,#5A6C82)}
.compare-col.is-after .bar-fill{background:linear-gradient(90deg,var(--primary),var(--accent))}
@media (max-width:768px){.compare{grid-template-columns:1fr}.compare-col{padding:24px}}

/* ============ FAQ ============ */
.faq-accordion .accordion-item{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  border:1px solid var(--line-soft);border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;
}
.faq-accordion .accordion-button{
  background:transparent;color:var(--text-hi);font-size:16px;font-weight:600;
  padding:20px 22px;box-shadow:none;border-radius:var(--r-md);line-height:1.5;
}
.faq-accordion .accordion-button:not(.collapsed){color:var(--text-hi);background:rgba(47,211,200,.06);box-shadow:none}
.faq-accordion .accordion-button::after{
  content:"";width:16px;height:16px;flex-shrink:0;margin-left:16px;
  background-image:none;border-right:2px solid var(--primary);border-bottom:2px solid var(--primary);
  transform:rotate(45deg);transition:transform .24s var(--ease);position:relative;top:-3px;
}
.faq-accordion .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);top:3px}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:2px solid var(--accent);outline-offset:-2px}
.faq-accordion .accordion-body{padding:0 22px 22px 22px;font-size:15px;line-height:1.8;color:var(--text-mute)}
.faq-accordion .accordion-item:has(.accordion-button:not(.collapsed)){border-left:3px solid var(--primary)}

/* ============ 表单 ============ */
.form-card{padding:32px;border-radius:var(--r-lg)}
.form-label{font-size:13px;letter-spacing:.04em;color:var(--text-mute);margin-bottom:8px;display:block}
.form-control-soft{
  width:100%;min-height:46px;padding:11px 14px;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--line-soft);color:var(--text-hi);
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
textarea.form-control-soft{min-height:120px;resize:vertical}
.form-control-soft::placeholder{color:rgba(141,160,181,.7)}
.form-control-soft:focus{
  outline:none;border-color:var(--primary);background:rgba(47,211,200,.05);
  box-shadow:0 0 0 3px rgba(47,211,200,.16);
}
.form-hint{font-size:12px;color:var(--text-mute);margin-top:12px}
.form-msg{font-size:13px;color:var(--accent);margin-top:12px;display:none}
.form-msg.show{display:block}
.check-list li{position:relative;padding-left:26px;font-size:15px;color:var(--text-body);margin-bottom:14px}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;width:12px;height:12px;border-radius:3px;
  background:rgba(47,211,200,.18);border:1px solid rgba(47,211,200,.5);
}

/* ============ CTA 条 ============ */
.cta-band{padding:56px 48px;border-radius:var(--r-lg);position:relative;overflow:hidden;
  background-image:linear-gradient(120deg,rgba(7,12,20,.9),rgba(11,20,32,.86)),url(/assets/images/backpic/back-3.png);
  background-size:cover;background-position:center;
}
.cta-band h2{font-size:30px;margin-bottom:12px}
.cta-band p{color:var(--text-mute);max-width:560px}
@media (max-width:768px){.cta-band{padding:32px 22px}.cta-band h2{font-size:24px}}

/* ============ 页脚 ============ */
.site-footer{background:#050A11;border-top:1px solid var(--line-soft);padding:72px 0 28px;margin-top:0}
.foot-brand .brand{margin-bottom:16px}
.foot-brand p{font-size:14px;color:var(--text-mute);line-height:1.8;max-width:320px}
.contact-line{font-size:13px;color:var(--text-mute);margin-top:6px}
.foot-title{font-size:14px;letter-spacing:.06em;color:var(--text-hi);margin-bottom:16px;font-weight:600}
.foot-list li{margin-bottom:10px}
.foot-list a{font-size:14px;color:var(--text-mute)}
.foot-list a:hover{color:var(--primary)}
.foot-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px;color:var(--text-mute);padding-top:22px}
@media (max-width:768px){.site-footer{padding:48px 0 22px}}

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

/* roulang page: category3 */
:root{
  --ink-900:#070C14;
  --ink-800:#0B1420;
  --surface-glass:rgba(19,31,48,.55);
  --line-soft:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#2FD3C8;
  --primary-deep:#14A79E;
  --accent:#FFB65C;
  --text-hi:#E8EFF7;
  --text-body:#C3CFDD;
  --text-mute:#8DA0B5;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --font-cn:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:"Barlow","DIN Alternate",ui-monospace,SFMono-Regular,Menlo,monospace;
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:32px;--sp-5:48px;--sp-6:64px;--sp-7:96px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text-body);
  background:var(--ink-900);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(700px 420px at 8% -6%, rgba(47,211,200,.12), transparent 62%),
    radial-gradient(520px 360px at 96% 12%, rgba(255,182,92,.07), transparent 60%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.05;
  background-image:linear-gradient(rgba(255,255,255,.6) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.6) 1px,transparent 1px);
  background-size:24px 24px;
}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--text-hi)}
img{max-width:100%;display:block}
h1,h2,h3,h4{color:var(--text-hi);font-weight:700;margin:0;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.container{max-width:1320px;padding-left:20px;padding-right:20px;position:relative;z-index:1}
@media (min-width:992px){.container{padding-left:32px;padding-right:32px}}
@media (min-width:1400px){.container{max-width:1400px}}
.section{padding:48px 0;position:relative;z-index:1}
@media (min-width:768px){.section{padding:72px 0}}
@media (min-width:992px){.section{padding:96px 0}}
.section-alt{background:var(--ink-800);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px}
.sec-head h2{font-size:24px;line-height:1.28}
@media (min-width:992px){.sec-head h2{font-size:32px}}
.sec-head .sec-desc{font-size:14px;color:var(--text-mute);max-width:520px}
.grad-line{height:1px;width:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.14) 50%,transparent)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.04em;color:var(--primary);
  background:rgba(47,211,200,.12);
  border:1px solid rgba(47,211,200,.24);
  border-radius:var(--r-pill);
  padding:6px 14px;
}
.eyebrow.warm{color:var(--accent);background:rgba(255,182,92,.12);border-color:rgba(255,182,92,.24)}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.04em;color:var(--primary);
  text-decoration:none;transition:color .2s var(--ease)
}
.text-link i{transition:transform .24s var(--ease)}
.text-link:hover{color:var(--accent)}
.text-link:hover i{transform:translateX(4px)}
.btn{font-weight:600;font-size:15px;border-radius:var(--r-pill);padding:0 26px;height:46px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;transition:all .24s var(--ease)}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:var(--ink-900);box-shadow:0 8px 24px rgba(47,211,200,.28)}
.btn-primary:hover,.btn-primary:focus{background:linear-gradient(135deg,#4ADFD4,#17B7AD);color:var(--ink-900);transform:translateY(-2px);box-shadow:0 12px 32px rgba(47,211,200,.45)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 3px 10px rgba(0,0,0,.3)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-body)}
.btn-ghost:hover{background:rgba(255,255,255,.08);color:var(--text-hi);border-color:var(--line-strong)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;padding:16px 0 0}
.nav-cap{
  width:min(1200px,calc(100% - 32px));
  margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:10px 12px 10px 20px;
  border-radius:var(--r-pill);
  background:rgba(11,20,32,.62);
  border:1px solid var(--line-soft);
  box-shadow:0 12px 34px rgba(0,0,0,.38);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  transition:background .2s var(--ease),box-shadow .2s var(--ease)
}
.site-header.is-scrolled .nav-cap{background:rgba(7,12,20,.86);box-shadow:0 16px 40px rgba(0,0,0,.55)}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none}
.brand svg{width:34px;height:34px;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-text strong{font-size:19px;font-weight:700;color:var(--text-hi);letter-spacing:-.01em}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.12em;color:var(--text-mute);margin-top:2px}
.nav-menu{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;font-size:15px;color:var(--text-body);padding:6px 0;text-decoration:none;
  transition:color .2s var(--ease)
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;border-radius:2px;
  background:var(--primary);transform:translateX(-50%);transition:width .24s var(--ease)
}
.nav-link:hover{color:var(--text-hi)}
.nav-link:hover::after{width:16px}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{width:16px}
.nav-cta{margin-left:8px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--line-soft);
  position:relative;cursor:pointer
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:50%;width:18px;height:2px;background:var(--text-hi);border-radius:2px;
  transform:translateX(-50%);transition:all .24s var(--ease)
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle[aria-expanded="true"] span{background:transparent}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:translateX(-50%) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:translateX(-50%) rotate(-45deg)}
@media (max-width:991px){
  .nav-cap{width:calc(100% - 24px);border-radius:20px;padding:10px 12px}
  .nav-toggle{display:block}
  .nav-menu{
    position:absolute;left:12px;right:12px;top:calc(100% + 10px);
    flex-direction:column;align-items:stretch;gap:0;
    background:rgba(9,16,26,.96);
    border:1px solid var(--line-soft);
    border-radius:20px;
    padding:8px;
    box-shadow:0 24px 50px rgba(0,0,0,.6);
    backdrop-filter:blur(16px);
    display:none
  }
  .nav-menu.open{display:flex}
  .nav-link{padding:14px 16px;border-bottom:1px solid var(--line-soft);min-height:52px;display:flex;align-items:center}
  .nav-link::after{display:none}
  .nav-link.active{background:rgba(47,211,200,.08);border-radius:12px}
  .nav-cta{margin:12px 8px 6px;width:calc(100% - 16px)}
}
/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-mute);padding:20px 0 0}
.crumb a{color:var(--text-mute)}
.crumb a:hover{color:var(--primary)}
.crumb span.current{color:var(--text-body)}
/* ---------- 页头 ---------- */
.page-hero{position:relative;overflow:hidden;padding:32px 0 48px}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  filter:blur(2px);transform:scale(1.04);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(7,12,20,.82),rgba(7,12,20,.9));
}
.page-hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:center;margin-top:32px}
@media (min-width:992px){.hero-grid{grid-template-columns:1.15fr .85fr;gap:56px}}
.hero-grid h1{font-size:28px;line-height:1.2;margin:20px 0 18px}
@media (min-width:768px){.hero-grid h1{font-size:38px}}
@media (min-width:992px){.hero-grid h1{font-size:46px}}
.hero-grid h1 .hl{
  background:linear-gradient(120deg,var(--primary),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent
}
.hero-lead{font-size:16px;color:var(--text-body);max-width:600px;line-height:1.9}
@media (min-width:992px){.hero-lead{font-size:18px}}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
@media (max-width:575px){.hero-actions .btn{width:100%}}
.hero-facts{display:flex;flex-wrap:wrap;gap:22px;margin-top:34px;font-size:14px;color:var(--text-mute)}
.hero-facts b{color:var(--text-hi);font-family:var(--font-num);font-weight:700}
.hero-facts .dot{width:1px;height:14px;background:var(--line-soft);display:inline-block}
.glass-card{
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--line-soft);
  border-radius:var(--r-lg);
  box-shadow:0 18px 44px rgba(0,0,0,.45),inset 0 1px 0 rgba(255,255,255,.06);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease)
}
.glass-card:hover{transform:translateY(-4px);border-color:rgba(47,211,200,.34);box-shadow:0 26px 56px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.08)}
.hero-visual{position:relative}
.hero-visual .pic{border-radius:var(--r-lg);overflow:hidden;aspect-ratio:4/3}
.hero-visual .pic img{width:100%;height:100%;object-fit:cover}
.hero-badge-float{
  position:absolute;left:-14px;bottom:18px;
  display:flex;align-items:center;gap:12px;
  padding:14px 18px;border-radius:var(--r-md);
  background:rgba(11,20,32,.86);
  border:1px solid var(--line-soft);
  box-shadow:0 18px 40px rgba(0,0,0,.55);
  backdrop-filter:blur(14px)
}
.hero-badge-float .big{font-family:var(--font-num);font-size:26px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1}
.hero-badge-float .small{font-size:12px;color:var(--text-mute);letter-spacing:.04em}
@media (max-width:575px){
  .hero-visual .pic{aspect-ratio:16/9}
  .hero-badge-float{left:8px;bottom:8px;padding:10px 14px}
  .hero-badge-float .big{font-size:22px}
}
/* ---------- 指标卡 ---------- */
.metric-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:768px){.metric-grid{grid-template-columns:repeat(3,1fr);gap:24px}}
.metric-card{padding:30px 26px}
.metric-card .label{font-size:13px;letter-spacing:.04em;color:var(--text-mute);margin-bottom:14px;display:block}
.metric-card .value{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:44px;font-weight:700;line-height:1;color:var(--accent);display:flex;align-items:baseline;gap:6px}
.metric-card .value.teal{color:var(--primary)}
.metric-card .value small{font-size:16px;font-weight:600;color:var(--text-body)}
.metric-card .desc{font-size:14px;color:var(--text-mute);margin-top:16px;line-height:1.7}
@media (min-width:992px){.metric-card .value{font-size:56px}}
/* ---------- 行式列表 ---------- */
.res-list{border-top:1px solid var(--line-soft)}
.res-row{
  display:grid;grid-template-columns:44px 1fr auto;gap:18px;align-items:center;
  padding:20px 16px;min-height:64px;
  border-bottom:1px solid var(--line-soft);
  transition:background .2s var(--ease)
}
.res-row:hover{background:rgba(255,255,255,.04)}
.res-row .ico{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(47,211,200,.1);border:1px solid rgba(47,211,200,.22);color:var(--primary);font-size:20px
}
.res-row h3{font-size:18px;font-weight:600;margin-bottom:4px}
.res-row p{font-size:14px;color:var(--text-mute);line-height:1.6;margin:0}
.res-row .go{font-size:14px}
@media (max-width:767px){
  .res-row{grid-template-columns:40px 1fr;gap:14px;padding:16px 6px}
  .res-row .go{grid-column:2;justify-self:start;margin-top:6px}
}
/* ---------- 参数带 ---------- */
.param-band{background:var(--ink-800);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);padding:34px 0}
.param-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
@media (min-width:768px){.param-grid{grid-template-columns:repeat(4,1fr)}}
.param-item{border-left:2px solid rgba(47,211,200,.4);padding-left:16px}
.param-item .k{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:26px;font-weight:700;color:var(--text-hi);line-height:1.2}
.param-item .t{font-size:13px;color:var(--text-mute);margin-top:6px}
/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;margin:0 auto}
.accordion-item{background:transparent;border:0;margin-bottom:12px;border-radius:var(--r-md);overflow:hidden}
.accordion-item:last-child{margin-bottom:0}
.accordion-button{
  width:100%;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015))!important;
  border:1px solid var(--line-soft)!important;border-radius:var(--r-md)!important;
  color:var(--text-body)!important;
  font-size:17px;font-weight:600;
  padding:20px 56px 20px 22px;
  box-shadow:none!important;
  transition:color .2s var(--ease),border-color .2s var(--ease)
}
.accordion-button::after{
  content:"+";background-image:none!important;
  font-size:22px;font-weight:400;color:var(--primary);
  width:auto;height:auto;transform:none;
  position:absolute;right:22px;top:50%;margin-top:-16px;
  line-height:32px;transition:transform .24s var(--ease)
}
.accordion-button:not(.collapsed){color:var(--text-hi)!important;border-color:rgba(47,211,200,.3)!important}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.accordion-button:focus{box-shadow:0 0 0 2px rgba(47,211,200,.4)!important}
.accordion-button:hover{border-color:var(--line-strong)!important}
.accordion-body{
  background:rgba(19,31,48,.35);
  border:1px solid var(--line-soft);border-top:0;
  border-radius:0 0 var(--r-md) var(--r-md);
  font-size:15px;line-height:1.8;color:var(--text-body);
  padding:18px 22px 22px;
  border-left:3px solid var(--primary);
  margin-top:-12px;padding-top:24px
}
/* ---------- 表单 ---------- */
.form-card{padding:30px 26px}
@media (min-width:992px){.form-card{padding:36px 34px}}
.form-label{font-size:14px;color:var(--text-body);margin-bottom:8px}
.form-control,.form-select{
  background:rgba(255,255,255,.04);border:1px solid var(--line-soft);
  border-radius:12px;color:var(--text-hi);min-height:46px;font-size:15px;
  padding:10px 14px;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)
}
.form-control::placeholder{color:var(--text-mute)}
.form-control:focus,.form-select:focus{
  background:rgba(255,255,255,.06);border-color:var(--primary);color:var(--text-hi);
  box-shadow:0 0 0 3px rgba(47,211,200,.2);outline:none
}
.form-note{font-size:12px;color:var(--text-mute);margin-top:12px}
.form-alert{display:none;margin-top:14px;font-size:14px;color:var(--accent)}
.form-alert.show{display:block}
.cta-side h2{font-size:26px;line-height:1.35;margin-bottom:18px}
@media (min-width:992px){.cta-side h2{font-size:32px}}
.cta-side ul li{display:flex;gap:12px;align-items:flex-start;padding:10px 0;font-size:15px;color:var(--text-body)}
.cta-side ul li i{color:var(--primary);font-size:18px;margin-top:2px}
/* ---------- 页脚 ---------- */
.site-footer{background:#050A11;border-top:1px solid var(--line-soft);padding:64px 0 28px;margin-top:0;position:relative;z-index:1}
.foot-brand .brand{margin-bottom:18px}
.foot-brand p{font-size:14px;color:var(--text-mute);line-height:1.8;max-width:340px}
.contact-line{font-size:14px;color:var(--text-body);margin-top:10px}
.foot-title{font-size:14px;letter-spacing:.06em;color:var(--text-hi);margin-bottom:18px;font-weight:600}
.foot-list li{margin-bottom:10px}
.foot-list a{font-size:14px;color:var(--text-mute)}
.foot-list a:hover{color:var(--primary)}
.foot-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding-top:22px;font-size:12px;color:var(--text-mute)}
@media (max-width:575px){.foot-bottom{flex-direction:column}}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --ink-900:#070C14;
  --ink-800:#0B1420;
  --surface-glass:rgba(19,31,48,.55);
  --line-soft:rgba(255,255,255,.08);
  --line-strong:rgba(255,255,255,.16);
  --primary:#2FD3C8;
  --primary-deep:#14A79E;
  --accent:#FFB65C;
  --text-hi:#E8EFF7;
  --text-body:#C3CFDD;
  --text-mute:#8DA0B5;
  --r-sm:10px;
  --r-md:16px;
  --r-lg:24px;
  --r-pill:999px;
  --font-main:"HarmonyOS Sans SC","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow","DIN Alternate",ui-monospace,"SFMono-Regular",Menlo,monospace;
  --sp-1:8px; --sp-2:16px; --sp-3:24px; --sp-4:32px; --sp-5:48px; --sp-6:64px; --sp-7:96px;
  --shadow-card:0 18px 44px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text-body);
  font-family:var(--font-main);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 420px at 8% 4%, rgba(47,211,200,.10), transparent 60%),
    radial-gradient(520px 360px at 96% 12%, rgba(255,182,92,.06), transparent 62%);
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--text-hi)}
h1,h2,h3,h4{color:var(--text-hi);margin:0;font-weight:700}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul{list-style:none;margin:0;padding:0}
button,input,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
::selection{background:rgba(47,211,200,.28);color:var(--text-hi)}

.container{max-width:1320px;padding-left:20px;padding-right:20px;margin:0 auto;position:relative;z-index:1}
@media(min-width:992px){.container{padding-left:32px;padding-right:32px}}
.section{padding:48px 0;position:relative;z-index:1}
@media(min-width:768px){.section{padding:72px 0}}
@media(min-width:1200px){.section{padding:96px 0}}
.section-alt{background:var(--ink-800);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}

/* ============ 导航 ============ */
.site-header{position:sticky;top:16px;z-index:1050;padding:0 16px}
.nav-cap{
  width:min(1200px,100%);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:24px;
  padding:10px 12px 10px 18px;
  border-radius:var(--r-pill);
  background:rgba(11,20,32,.62);
  border:1px solid var(--line-soft);
  backdrop-filter:blur(18px) saturate(140%);
  box-shadow:0 12px 34px rgba(0,0,0,.42);
  transition:background .2s var(--ease), box-shadow .2s var(--ease), padding .2s var(--ease);
}
.site-header.is-scrolled .nav-cap{background:rgba(7,12,20,.86);box-shadow:0 16px 42px rgba(0,0,0,.55);padding-top:7px;padding-bottom:7px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand svg{width:34px;height:34px;flex-shrink:0}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:19px;font-weight:700;color:var(--text-hi);letter-spacing:-.01em}
.brand-text em{font-style:normal;font-size:11px;letter-spacing:.12em;color:var(--text-mute)}
.nav-menu{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav-link{position:relative;font-size:15px;color:var(--text-body);padding:6px 0}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:-2px;width:0;height:2px;background:var(--primary);
  transform:translateX(-50%);border-radius:2px;transition:width .24s var(--ease);
}
.nav-link:hover{color:var(--text-hi)}
.nav-link:hover::after{width:16px}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{width:16px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:14px;border:1px solid var(--line-soft);
  background:rgba(255,255,255,.04);position:relative;margin-left:auto;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);width:18px;height:2px;background:var(--text-hi);
  border-radius:2px;transition:.24s var(--ease);content:"";
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.is-open span{background:transparent}
.nav-toggle.is-open span::before{top:0;transform:translateX(-50%) rotate(45deg)}
.nav-toggle.is-open span::after{top:0;transform:translateX(-50%) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.02em;border:1px solid transparent;
  cursor:pointer;transition:transform .2s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-deep));color:var(--ink-900);box-shadow:0 8px 24px rgba(47,211,200,.28)}
.btn-primary:hover{color:var(--ink-900);transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 12px 32px rgba(47,211,200,.45)}
.btn-primary:active{transform:translateY(0);box-shadow:inset 0 2px 8px rgba(0,0,0,.28)}
.btn-ghost{background:transparent;border-color:var(--line-strong);color:var(--text-body)}
.btn-ghost:hover{background:rgba(255,255,255,.08);color:var(--text-hi);border-color:var(--line-strong)}
.btn-block{width:100%}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:13px;letter-spacing:.04em;color:var(--primary);font-weight:600}
.link-more svg{transition:transform .24s var(--ease)}
.link-more:hover svg{transform:translateX(4px)}

/* ============ 徽章 / 标签 ============ */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:var(--r-pill);font-size:12px;letter-spacing:.04em;
  background:rgba(47,211,200,.12);color:var(--primary);border:1px solid rgba(47,211,200,.24);
}
.badge-accent{background:rgba(255,182,92,.12);color:var(--accent);border-color:rgba(255,182,92,.24)}

/* ============ 面包屑 ============ */
.crumb{padding:32px 0 0;font-size:14px;color:var(--text-mute);display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumb a{color:var(--text-mute)}
.crumb a:hover{color:var(--primary)}
.crumb .sep{opacity:.5}
.crumb .cur{color:var(--text-body)}

/* ============ 页头 ============ */
.page-hero{position:relative;padding:48px 0 40px;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(7,12,20,.78),rgba(7,12,20,.92)),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  filter:blur(2px);transform:scale(1.02);
}
.page-hero::after{
  content:"";position:absolute;inset:0;opacity:.05;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:24px 24px;
}
.page-hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
@media(min-width:992px){.hero-grid{grid-template-columns:6.5fr 5.5fr;gap:56px}}
.page-hero h1{font-size:30px;line-height:1.2;letter-spacing:-.01em;margin:18px 0 16px}
@media(min-width:768px){.page-hero h1{font-size:40px}}
@media(min-width:1200px){.page-hero h1{font-size:46px}}
.hero-sub{font-size:17px;color:var(--text-body);max-width:600px;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-meta{display:flex;flex-wrap:wrap;gap:24px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line-soft)}
.hero-meta div{font-size:13px;color:var(--text-mute)}
.hero-meta strong{display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:26px;color:var(--accent);font-weight:700;line-height:1.3}
.hero-card{
  border-radius:var(--r-lg);overflow:hidden;position:relative;
  border:1px solid var(--line-soft);
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  backdrop-filter:blur(16px) saturate(140%);
  box-shadow:var(--shadow-card);
}
.hero-card img{width:100%;aspect-ratio:4/3;object-fit:cover;opacity:.88}
.hero-float{
  position:absolute;left:18px;bottom:18px;right:18px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:14px 18px;border-radius:14px;
  background:rgba(7,12,20,.78);border:1px solid var(--line-soft);backdrop-filter:blur(12px);
}
.hero-float b{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:24px;color:var(--accent)}
.hero-float span{font-size:13px;color:var(--text-mute)}

/* ============ 板块标题 ============ */
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px}
.sec-head h2{font-size:26px;line-height:1.28}
@media(min-width:768px){.sec-head h2{font-size:32px}}
.sec-head p{font-size:15px;color:var(--text-mute);margin:10px 0 0;max-width:660px}
.eyebrow{font-size:12px;letter-spacing:.12em;color:var(--primary);text-transform:uppercase;font-weight:600}

/* ============ 通用卡片 ============ */
.card-glass{
  border-radius:var(--r-md);padding:26px;height:100%;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  backdrop-filter:blur(16px) saturate(140%);
  border:1px solid var(--line-soft);
  box-shadow:var(--shadow-card);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.card-glass:hover{transform:translateY(-4px);border-color:rgba(47,211,200,.34);box-shadow:0 26px 54px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.06)}
.card-num{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:15px;color:var(--text-mute);letter-spacing:.06em;font-weight:600}
.card-glass:hover .card-num{color:var(--primary)}
.card-glass h3{font-size:20px;margin:14px 0 10px;line-height:1.4}
.card-glass p{font-size:15px;color:var(--text-mute);line-height:1.8}

/* 场景卡（图上文下） */
.scene-card{
  border-radius:var(--r-md);overflow:hidden;height:100%;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  border:1px solid var(--line-soft);box-shadow:var(--shadow-card);
  transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
  display:flex;flex-direction:column;
}
.scene-card:hover{transform:translateY(-4px);border-color:rgba(47,211,200,.34);box-shadow:0 26px 54px rgba(0,0,0,.55)}
.scene-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink-800)}
.scene-card .thumb img{width:100%;height:100%;object-fit:cover;opacity:.82;transition:transform .5s var(--ease),opacity .3s var(--ease)}
.scene-card:hover .thumb img{transform:scale(1.05);opacity:.95}
.scene-card .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,12,20,.15),rgba(7,12,20,.72))}
.scene-card .thumb .badge-soft{position:absolute;left:14px;top:14px;z-index:2;background:rgba(7,12,20,.7)}
.scene-card .body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1}
.scene-card h3{font-size:19px;line-height:1.45}
.scene-card p{font-size:15px;color:var(--text-mute);flex:1}
.chip-list{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:12px;letter-spacing:.03em;color:var(--text-body);border:1px solid var(--line-soft);background:rgba(255,255,255,.04);border-radius:var(--r-pill);padding:3px 12px}

/* ============ 流程时间线 ============ */
.flow{display:grid;grid-template-columns:1fr;gap:20px;position:relative}
@media(min-width:768px){.flow{grid-template-columns:repeat(2,1fr);gap:24px}}
@media(min-width:1200px){.flow{grid-template-columns:repeat(4,1fr)}}
.flow-step{position:relative;padding:26px 22px;border-radius:var(--r-md);background:rgba(19,31,48,.5);border:1px solid var(--line-soft);transition:border-color .24s var(--ease),transform .24s var(--ease)}
.flow-step:hover{transform:translateY(-4px);border-color:rgba(47,211,200,.34)}
.flow-step .dot{width:12px;height:12px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 6px rgba(47,211,200,.14);margin-bottom:18px}
.flow-step .idx{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;letter-spacing:.1em;color:var(--accent);font-weight:700}
.flow-step h3{font-size:18px;margin:8px 0 10px}
.flow-step p{font-size:14px;color:var(--text-mute);line-height:1.75}
@media(min-width:1200px){
  .flow::before{content:"";position:absolute;left:0;right:0;top:32px;height:1px;background:linear-gradient(90deg,rgba(47,211,200,0),rgba(47,211,200,.6),rgba(255,182,92,.45),rgba(47,211,200,0));z-index:0}
  .flow-step{z-index:1}
}

/* ============ 对比组件 ============ */
.compare{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:992px){.compare{grid-template-columns:1fr 1fr;gap:32px}}
.compare-col{padding:28px;border-radius:var(--r-md);border:1px solid var(--line-soft);background:rgba(19,31,48,.42)}
.compare-col.better{background:linear-gradient(160deg,rgba(47,211,200,.10),rgba(255,182,92,.05));border-color:rgba(47,211,200,.24)}
.compare-col h3{font-size:18px;margin-bottom:22px;display:flex;align-items:center;gap:10px}
.compare-row{margin-bottom:22px}
.compare-row:last-child{margin-bottom:0}
.compare-row .rlabel{display:flex;justify-content:space-between;font-size:14px;color:var(--text-body);margin-bottom:8px;gap:12px}
.compare-row .rlabel b{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:15px;color:var(--text-hi)}
.compare-col.better .rlabel b{color:var(--accent)}
.bar{height:8px;border-radius:var(--r-pill);background:rgba(255,255,255,.07);overflow:hidden}
.bar i{display:block;height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,#4B6076,#6A7E93);width:0;transition:width 1s var(--ease)}
.compare-col.better .bar i{background:linear-gradient(90deg,var(--primary),var(--accent))}
.compare-note{margin-top:24px;font-size:13px;color:var(--text-mute)}

/* ============ 数据参数带 ============ */
.stat-strip{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line-soft);border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line-soft)}
@media(min-width:992px){.stat-strip{grid-template-columns:repeat(4,1fr)}}
.stat-strip .cell{background:var(--ink-800);padding:26px 22px}
.stat-strip .cell b{display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:34px;font-weight:700;color:var(--text-hi);line-height:1.2}
.stat-strip .cell b.amber{color:var(--accent)}
.stat-strip .cell b.cyan{color:var(--primary)}
.stat-strip .cell span{font-size:14px;color:var(--text-mute)}

/* ============ 支持列表（行式） ============ */
.row-list{border:1px solid var(--line-soft);border-radius:var(--r-md);overflow:hidden;background:rgba(19,31,48,.35)}
.row-item{display:flex;align-items:center;gap:18px;min-height:64px;padding:14px 22px;border-bottom:1px solid var(--line-soft);transition:background .2s var(--ease)}
.row-item:last-child{border-bottom:0}
.row-item:hover{background:rgba(255,255,255,.04)}
.row-item .ico{width:40px;height:40px;flex-shrink:0;border-radius:12px;display:grid;place-items:center;background:rgba(47,211,200,.10);color:var(--primary)}
.row-item .txt{flex:1;min-width:0}
.row-item .txt strong{display:block;font-size:16px;color:var(--text-hi);font-weight:600}
.row-item .txt em{font-style:normal;font-size:13px;color:var(--text-mute);display:block}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px}
.faq-item{margin-bottom:12px;border-radius:var(--r-md);border:1px solid var(--line-soft);background:rgba(19,31,48,.5);overflow:hidden;transition:border-color .24s var(--ease)}
.faq-item.is-open{border-color:rgba(47,211,200,.30)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;text-align:left;padding:20px 22px;background:transparent;border:0;cursor:pointer;color:var(--text-hi);font-size:16px;font-weight:600;line-height:1.5;position:relative}
.faq-item.is-open .faq-q{color:var(--text-hi)}
.faq-q .sign{flex-shrink:0;width:22px;height:22px;position:relative}
.faq-q .sign::before,.faq-q .sign::after{content:"";position:absolute;left:50%;top:50%;background:var(--primary);border-radius:2px;transform:translate(-50%,-50%);transition:transform .24s var(--ease)}
.faq-q .sign::before{width:14px;height:2px}
.faq-q .sign::after{width:2px;height:14px}
.faq-item.is-open .faq-q .sign::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq-item.is-open .faq-q{box-shadow:inset 3px 0 0 var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-a p{padding:0 22px 20px;font-size:15px;color:var(--text-body);line-height:1.8;margin:0}

/* ============ 表单 ============ */
.form-card{border-radius:var(--r-lg);padding:30px;background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));border:1px solid var(--line-soft);box-shadow:var(--shadow-card);backdrop-filter:blur(16px)}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--text-mute);margin-bottom:8px;letter-spacing:.03em}
.field input,.field textarea{
  width:100%;background:rgba(255,255,255,.04);border:1px solid var(--line-soft);border-radius:12px;
  color:var(--text-hi);padding:12px 14px;line-height:1.6;transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
}
.field input{height:46px}
.field textarea{min-height:118px;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:#6C7C8F}
.field input:focus,.field textarea:focus{outline:0;border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,211,200,.18);background:rgba(255,255,255,.06)}
.form-hint{font-size:12px;color:var(--text-mute);margin-top:14px;line-height:1.7}
.lead-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-body);padding:10px 0;border-bottom:1px solid var(--line-soft)}
.lead-list li:last-child{border-bottom:0}
.lead-list svg{flex-shrink:0;margin-top:5px;color:var(--primary)}

/* ============ CTA 条 ============ */
.cta-band{
  border-radius:var(--r-lg);padding:40px;position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(47,211,200,.14),rgba(11,20,32,.9) 55%);
  border:1px solid rgba(47,211,200,.22);
}
.cta-band h2{font-size:26px;margin-bottom:12px}
.cta-band p{color:var(--text-body);max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}

/* ============ 页脚 ============ */
.site-footer{background:#050A11;border-top:1px solid var(--line-soft);padding:64px 0 28px;position:relative;z-index:1}
.foot-brand p{font-size:14px;color:var(--text-mute);margin:18px 0;max-width:340px;line-height:1.8}
.contact-line{font-size:13px;color:var(--text-mute);padding:3px 0}
.foot-title{font-size:14px;letter-spacing:.06em;color:var(--text-hi);margin-bottom:18px;font-weight:600}
.foot-list li{margin-bottom:12px}
.foot-list a{font-size:14px;color:var(--text-mute)}
.foot-list a:hover{color:var(--primary)}
.grad-line{height:1px;background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.16) 50%,rgba(255,255,255,0))}
.foot-bottom{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12px;color:var(--text-mute);padding-top:22px}

/* ============ 响应式导航 ============ */
@media(max-width:991px){
  .nav-toggle{display:block}
  .nav-menu{
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    flex-direction:column;align-items:stretch;gap:0;margin:0;
    padding:8px;border-radius:20px;
    background:rgba(7,12,20,.94);border:1px solid var(--line-soft);backdrop-filter:blur(20px);
    box-shadow:0 24px 48px rgba(0,0,0,.55);
    max-height:0;overflow:hidden;opacity:0;pointer-events:none;
    transition:max-height .3s var(--ease),opacity .24s var(--ease);
  }
  .nav-menu.is-open{max-height:420px;opacity:1;pointer-events:auto}
  .nav-link{height:52px;display:flex;align-items:center;padding:0 16px;border-bottom:1px solid var(--line-soft);font-size:15px}
  .nav-link:last-of-type{border-bottom:0}
  .nav-link::after{display:none}
  .nav-link.active{color:var(--primary)}
  .nav-cta{margin:10px 8px 8px;height:46px;width:auto}
  .nav-cap{padding-right:12px;position:relative}
}
@media(max-width:575px){
  .site-header{top:10px;padding:0 12px}
  .brand svg{width:30px;height:30px}
  .brand-text strong{font-size:17px}
  .page-hero h1{font-size:28px}
  .hero-meta{gap:18px}
  .hero-meta strong{font-size:22px}
  .card-glass{padding:22px}
  .form-card{padding:22px}
  .cta-band{padding:26px}
  .btn{width:100%}
  .hero-actions .btn{width:100%}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .bar i{width:var(--w,0)!important}
}