/* roulang page: index */
:root{
  --bg:#0A0E13;
  --bg-2:#101823;
  --surface:rgba(255,255,255,.055);
  --surface-2:rgba(255,255,255,.08);
  --line:rgba(255,255,255,.10);
  --primary:#1FA7C9;
  --primary-2:#6FE3F2;
  --accent:#FF7A2F;
  --ink:#F2F6FA;
  --ink-2:#A9B7C6;
  --ink-3:#7B8896;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:12px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding-bottom:96px;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  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(760px 480px at 6% -6%, rgba(31,167,201,.20), transparent 62%),
    radial-gradient(680px 520px at 100% 26%, rgba(255,122,47,.10), transparent 66%);
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.35;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='140' height='140'><path d='M0 96 L34 76 L70 100 L106 72 L140 92' fill='none' stroke='rgba(255,255,255,0.035)' stroke-width='1'/></svg>");
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary-2);outline-offset:2px;border-radius:6px}
::selection{background:rgba(31,167,201,.4);color:#fff}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 32px;
  position:relative;
  z-index:1;
}

/* ===== 导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  height:72px;
  display:flex;
  align-items:center;
  background:rgba(10,14,19,.72);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.is-scrolled{
  background:rgba(10,14,19,.86);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom-color:var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:44px;height:44px;border-radius:13px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,rgba(31,167,201,.30),rgba(31,167,201,.06));
  border:1px solid rgba(111,227,242,.34);
  box-shadow:0 8px 22px rgba(31,167,201,.22);
}
.brand-mark svg{width:26px;height:26px}
.brand-text{display:flex;flex-direction:column;line-height:1.16}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.4px}
.brand-text span{font-size:12.5px;color:var(--primary-2);letter-spacing:1.4px;font-weight:600}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;
  font-size:15px;
  font-weight:600;
  color:var(--ink-2);
  padding:10px 12px;
  border-radius:10px;
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--ink);background:rgba(255,255,255,.05)}
.nav-link.is-active{color:var(--ink)}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.nav-mask{
  position:fixed;inset:0;background:rgba(6,9,13,.72);
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;z-index:70;
}
.nav-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:86vw;
  background:linear-gradient(180deg,#0E1620,#0A0E13);
  border-left:1px solid var(--line);
  z-index:80;transform:translateX(102%);
  transition:transform .3s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;padding:22px 20px;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{
  width:38px;height:38px;border-radius:11px;border:1px solid var(--line);
  background:rgba(255,255,255,.04);cursor:pointer;display:flex;align-items:center;justify-content:center;
}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;padding:0 14px;border-radius:12px;
  color:var(--ink-2);font-weight:600;font-size:15.5px;
  border:1px solid transparent;transition:.2s;
}
.drawer-link:hover{background:rgba(255,255,255,.05);color:var(--ink);border-color:var(--line)}
.drawer-link.is-active{color:var(--primary-2);background:rgba(31,167,201,.12);border-color:rgba(111,227,242,.28)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;border-radius:var(--radius-btn);
  padding:0 22px;height:48px;border:1px solid transparent;cursor:pointer;
  transition:box-shadow .22s ease,background .22s ease,border-color .22s ease,transform .18s ease,filter .22s ease;
  white-space:nowrap;
}
.btn-sm{height:44px;padding:0 18px;font-size:14.5px}
.btn-primary{
  background:linear-gradient(180deg,#37BAD9,#1FA7C9);
  color:#04161C;
  box-shadow:0 0 0 1px rgba(111,227,242,.5),0 10px 30px rgba(31,167,201,.35);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(111,227,242,.62),0 12px 42px rgba(31,167,201,.5)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(111,227,242,.45),0 6px 16px rgba(31,167,201,.3)}
.btn-ghost{
  border-color:rgba(255,255,255,.18);
  background:rgba(255,255,255,.03);
  color:var(--ink);
}
.btn-ghost:hover{border-color:var(--primary);background:rgba(31,167,201,.10);color:#fff}
.btn-ghost:active{transform:translateY(1px)}
.btn-block{width:100%}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--primary-2);font-weight:600;font-size:15px;
  transition:gap .2s ease,color .2s ease;
}
.text-link:hover{gap:13px;color:#fff}

/* ===== 徽章 / 标签 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  font-size:12.5px;font-weight:600;letter-spacing:.3px;
  background:rgba(31,167,201,.16);
  border:1px solid rgba(111,227,242,.30);
  color:var(--primary-2);
}
.badge-accent{
  background:rgba(255,122,47,.14);
  border-color:rgba(255,122,47,.34);
  color:#FFB183;
}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;color:var(--ink-3);
  padding:4px 10px;border-radius:8px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
}

/* ===== 区块 ===== */
.section{padding:96px 0;position:relative}
.section-tight{padding:72px 0}
.section-head{margin-bottom:44px;max-width:760px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:2px;
  color:var(--primary-2);margin-bottom:14px;
}
.section-head .eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent)}
h2{
  font-size:clamp(24px,3.4vw,36px);
  line-height:1.25;font-weight:780;letter-spacing:-.4px;
}
h3{font-size:19px;line-height:1.5;font-weight:700}
.section-sub{margin-top:14px;font-size:16px;line-height:1.85;color:var(--ink-2);max-width:760px}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ===== Hero ===== */
.hero{padding:64px 0 88px;position:relative}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;min-height:640px}
.hero-copy h1{
  font-size:clamp(30px,5vw,54px);
  line-height:1.15;font-weight:800;letter-spacing:-1px;
}
.hero-copy h1 em{
  font-style:normal;
  background:linear-gradient(120deg,var(--primary-2),#9FF0FA 40%,var(--primary));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.9;color:var(--ink-2);max-width:560px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px}
.hero-stats{
  display:flex;gap:0;margin-top:44px;flex-wrap:wrap;
}
.hero-stat{padding-right:28px;margin-right:28px;border-right:1px solid var(--line)}
.hero-stat:last-child{border-right:none;margin-right:0;padding-right:0}
.hero-stat b{
  display:block;font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:30px;line-height:1.1;font-weight:700;color:var(--primary-2);
}
.hero-stat span{font-size:13px;color:var(--ink-3);letter-spacing:.4px}
.hero-media{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);min-height:460px;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat, #131C26;
  box-shadow:var(--shadow-card);
}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(420px 300px at 0% 0%, rgba(31,167,201,.30), transparent 60%),
    linear-gradient(160deg, rgba(10,14,19,.42), rgba(10,14,19,.80) 62%, rgba(10,14,19,.92));
}
.hero-float{
  position:absolute;left:26px;right:26px;bottom:26px;z-index:2;
  border-radius:16px;padding:22px;
  background:rgba(12,18,25,.72);
  border:1px solid rgba(111,227,242,.30);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:0 18px 40px rgba(0,0,0,.45);
}
.hero-float h3{font-size:16.5px;margin-bottom:8px}
.hero-float p{font-size:14px;line-height:1.75;color:var(--ink-2)}
.hero-float .btn{margin-top:16px}
.hero-tagline{
  position:absolute;top:24px;left:26px;z-index:2;
}

/* ===== 卖点非对称 ===== */
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.card{
  border-radius:var(--radius-card);
  background:var(--surface);
  border:1px solid var(--line);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
  padding:28px;
  transition:border-color .25s ease,transform .25s ease,background .25s ease;
}
.card:hover{border-color:rgba(111,227,242,.35);transform:translateY(-2px);background:rgba(255,255,255,.07)}
.f-card-1{grid-column:span 7;display:flex;flex-direction:column;min-height:330px}
.f-card-2{grid-column:span 5;display:flex;flex-direction:column;min-height:330px}
.f-card-3{grid-column:span 12;display:flex;align-items:center;gap:26px;flex-wrap:wrap}
.f-card-3 .f-wide-body{flex:1 1 320px}
.f-icon{
  width:52px;height:52px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(31,167,201,.12);
  border:1px solid rgba(111,227,242,.22);
  margin-bottom:20px;flex-shrink:0;
}
.f-icon svg{width:30px;height:30px;stroke:var(--primary-2);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.f-card-1 h3,.f-card-2 h3{font-size:21px}
.f-card-1 p,.f-card-2 p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--ink-2)}
.f-data{
  margin-top:auto;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:baseline;gap:12px;
}
.f-data b{font-family:var(--font-mono);font-size:26px;color:var(--accent);font-variant-numeric:tabular-nums}
.f-data span{font-size:13px;color:var(--ink-3)}
.f-card-3 h3{font-size:19px}
.f-card-3 p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--ink-2)}
.f-card-2 .btn{margin-top:auto;align-self:flex-start}

/* ===== 场景交替 ===== */
.scene{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  padding:44px 0;
}
.scene + .scene{border-top:1px solid var(--line)}
.scene-media{
  border-radius:var(--radius-img);overflow:hidden;
  border:1px solid var(--line);aspect-ratio:16/10;position:relative;
  background:#131C26;
}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.scene:hover .scene-media img{transform:scale(1.04)}
.scene-reverse .scene-media{order:2}
.scene-body .num{
  display:inline-flex;align-items:center;
  padding:3px 12px;border-radius:999px;margin-bottom:16px;
  font-family:var(--font-mono);font-size:13px;font-weight:700;
  color:#FFC29B;background:rgba(255,122,47,.14);border:1px solid rgba(255,122,47,.32);
}
.scene-body h3{font-size:23px;line-height:1.45}
.scene-body p{margin-top:14px;font-size:15.5px;line-height:1.85;color:var(--ink-2)}
.scene-body .conclusion{
  margin-top:18px;padding-left:16px;border-left:3px solid var(--primary);
  font-size:15px;color:var(--ink);font-weight:600;
}

/* ===== 最新信息 ===== */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;overflow:hidden;
  border-radius:var(--radius-card);
  background:var(--surface);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
  transition:border-color .25s ease,transform .25s ease;
}
.news-card:hover{border-color:rgba(111,227,242,.35);transform:translateY(-3px)}
.news-thumb{aspect-ratio:16/10;overflow:hidden;background:#141E29;position:relative}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-thumb img{transform:scale(1.04)}
.news-body{padding:22px;display:flex;flex-direction:column;flex:1}
.news-body .badge{align-self:flex-start}
.news-title{
  margin-top:14px;font-size:17.5px;line-height:1.55;font-weight:700;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-desc{
  margin-top:10px;font-size:14.5px;line-height:1.75;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{
  margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-3);border-top:1px solid var(--line);
}
.news-meta .meta-time{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.news-meta .meta-go{color:var(--primary-2);font-weight:600}
.news-empty{
  border:1px dashed rgba(255,255,255,.20);
  border-radius:16px;padding:56px 24px;text-align:center;
  background:rgba(255,255,255,.022);
}
.news-empty svg{width:38px;height:38px;margin:0 auto 16px;stroke:var(--ink-3);fill:none;stroke-width:1.6}
.news-empty p{font-size:15px;color:var(--ink-2);margin-bottom:18px}

/* ===== 社会认同 ===== */
.stats-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:rgba(255,255,255,.035);
  overflow:hidden;
}
.stat-item{padding:30px 24px;border-right:1px solid var(--line)}
.stat-item:last-child{border-right:none}
.stat-item b{
  display:block;font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:32px;line-height:1.1;font-weight:700;color:var(--primary-2);
}
.stat-item span{display:block;margin-top:8px;font-size:13.5px;color:var(--ink-3)}
.review-track{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:44px}
.review-card{
  border-radius:var(--radius-card);padding:24px;
  background:rgba(255,255,255,.045);border:1px solid var(--line);
}
.review-head{display:flex;align-items:center;gap:14px}
.avatar{
  width:46px;height:46px;border-radius:12px;flex-shrink:0;
  background:linear-gradient(150deg,rgba(31,167,201,.32),rgba(255,122,47,.18));
  border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:16px;color:#DDF6FC;
}
.review-head strong{display:block;font-size:15px}
.review-head span{font-size:12.5px;color:var(--ink-3)}
.stars{display:flex;gap:3px;margin:16px 0 12px}
.stars svg{width:15px;height:15px;stroke:var(--accent);fill:rgba(255,122,47,.25);stroke-width:1.6}
.review-card p{font-size:14.5px;line-height:1.75;color:var(--ink-2)}
.badge-strip{
  margin-top:44px;display:flex;flex-wrap:wrap;gap:12px;
}
.mark{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  font-size:13.5px;color:var(--ink-3);
  filter:grayscale(60%);opacity:.75;
  transition:filter .25s ease,opacity .25s ease,border-color .25s ease,transform .25s ease;
}
.mark:hover{filter:grayscale(0);opacity:1;border-color:rgba(111,227,242,.32);transform:translateY(-2px);color:var(--ink-2)}
.mark svg{width:18px;height:18px;stroke:var(--primary-2);fill:none;stroke-width:1.6}

/* ===== FAQ ===== */
.faq-list{display:flex;flex-direction:column;gap:10px;max-width:920px}
.faq-item{
  border-radius:14px;background:var(--surface);border:1px solid var(--line);
  overflow:hidden;transition:border-color .25s ease,background .25s ease;
}
.faq-item:hover{border-color:rgba(111,227,242,.26)}
.faq-item[open]{border-color:rgba(111,227,242,.34);background:rgba(255,255,255,.07)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 60px 20px 24px;
  font-size:16.5px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--primary-2);transition:transform .25s ease;
}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg)}
.faq-item[open] summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:0 4px 4px 0;
  background:linear-gradient(180deg,var(--primary-2),var(--primary));
}
.faq-answer{padding:0 24px 22px 24px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ===== CTA / 表单 ===== */
.cta-panel{
  border-radius:20px;padding:48px;
  background:
    radial-gradient(520px 320px at 88% 0%, rgba(255,122,47,.16), transparent 64%),
    radial-gradient(600px 360px at 0% 100%, rgba(31,167,201,.22), transparent 60%),
    rgba(255,255,255,.045);
  border:1px solid var(--line);
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;
  box-shadow:var(--shadow-card);
}
.cta-copy h2{max-width:460px}
.cta-copy p{margin-top:16px;font-size:15.5px;line-height:1.85;color:var(--ink-2);max-width:460px}
.cta-list{margin-top:26px;display:flex;flex-direction:column;gap:12px}
.cta-list li{display:flex;gap:10px;align-items:flex-start;font-size:14.8px;color:var(--ink-2)}
.cta-list svg{width:19px;height:19px;flex-shrink:0;margin-top:4px;stroke:var(--primary-2);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.form-field{margin-bottom:18px}
.form-field label{display:block;font-size:14px;color:var(--ink-2);margin-bottom:8px}
.form-field input,.form-field textarea{
  width:100%;height:48px;padding:0 15px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);border-radius:12px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.form-field textarea{height:118px;padding:13px 15px;line-height:1.7;resize:vertical}
.form-field input::placeholder,.form-field textarea::placeholder{color:var(--ink-3)}
.form-field input:focus,.form-field textarea:focus{
  outline:none;border-color:var(--primary);
  background:rgba(31,167,201,.07);
  box-shadow:0 0 0 4px rgba(31,167,201,.18);
}
.form-note{font-size:13px;color:var(--ink-3);margin-top:12px;line-height:1.7}
.form-msg{margin-top:14px;font-size:14px;color:var(--primary-2);min-height:20px}
.spin{
  width:15px;height:15px;border-radius:50%;
  border:2px solid rgba(4,22,28,.35);border-top-color:#04161C;
  display:inline-block;animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== 页脚 ===== */
.site-footer{
  margin-top:24px;position:relative;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(31,167,201,.06),rgba(10,14,19,0) 42%);
  padding:72px 0 0;
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand .brand-mark{width:40px;height:40px;border-radius:12px}
.footer-brand .brand-mark svg{width:22px;height:22px}
.footer-brand .brand-text strong{font-size:15px}
.footer-brand .brand-text span{font-size:11.5px}
.footer-desc{font-size:14px;line-height:1.8;color:var(--ink-2);max-width:330px}
.footer-col h4{
  font-size:14px;font-weight:700;color:var(--primary-2);
  letter-spacing:.6px;margin-bottom:18px;
}
.footer-col li{margin-bottom:12px}
.footer-col a,.footer-col span{
  font-size:14px;color:var(--ink-3);
  transition:color .2s ease,transform .2s ease;
  display:inline-block;
}
.footer-col a:hover{color:var(--ink);transform:translateX(2px)}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--ink-3);line-height:1.7}
.to-top{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;color:var(--ink-2);
  padding:8px 14px;border-radius:10px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);transition:.2s;
}
.to-top:hover{color:#fff;border-color:var(--primary)}
.to-top svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ===== 底部固定转化条 ===== */
.float-cta{
  position:fixed;left:50%;bottom:20px;transform:translate(-50%,14px);
  width:calc(100% - 40px);max-width:720px;min-height:64px;
  display:flex;align-items:center;gap:16px;
  padding:10px 12px 10px 24px;
  border-radius:999px;
  background:rgba(12,18,25,.82);
  border:1px solid rgba(111,227,242,.26);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:0 18px 40px rgba(0,0,0,.45);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease;
  z-index:65;
}
.float-cta.is-visible{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}
.float-cta p{font-size:14.5px;color:var(--ink-2);flex:1;min-width:0}
.float-cta p b{color:var(--ink);font-weight:600}
.float-close{
  width:38px;height:38px;border-radius:50%;flex-shrink:0;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:.2s;
}
.float-close:hover{border-color:var(--primary);background:rgba(31,167,201,.14)}
.float-close svg{width:16px;height:16px;stroke:var(--ink-2);fill:none;stroke-width:2;stroke-linecap:round}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-links{display:none}
  .nav-actions .btn-ghost{display:none}
  .nav-toggle{display:flex}
  .section{padding:72px 0}
  .hero{padding:44px 0 64px}
  .hero-grid{grid-template-columns:1fr;gap:36px;min-height:auto}
  .hero-media{min-height:380px}
  .f-card-1,.f-card-2{grid-column:span 6;min-height:auto}
  .f-card-3{grid-column:span 12}
  .scene{gap:36px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .stats-bar{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(2){border-right:none}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line)}
  .review-track{grid-template-columns:repeat(3,1fr);gap:18px}
  .cta-panel{grid-template-columns:1fr;gap:32px;padding:38px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .container{padding:0 20px}
  .section{padding:52px 0}
  .section-head{margin-bottom:30px}
  .hero-copy h1{font-size:clamp(28px,8vw,38px)}
  .hero-sub{font-size:16px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-stats{margin-top:32px}
  .hero-stat{padding-right:18px;margin-right:18px}
  .hero-stat b{font-size:24px}
  .f-card-1,.f-card-2{grid-column:span 12}
  .f-card-3{gap:18px}
  .scene{grid-template-columns:1fr;gap:22px;padding:32px 0}
  .scene-reverse .scene-media{order:0}
  .news-grid{grid-template-columns:1fr}
  .stats-bar{grid-template-columns:repeat(2,1fr)}
  .stat-item{padding:22px 18px}
  .stat-item b{font-size:26px}
  .review-track{
    display:flex;gap:14px;overflow-x:auto;padding-bottom:8px;
    scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
  }
  .review-card{flex:0 0 82%;scroll-snap-align:start}
  .cta-panel{padding:28px;border-radius:16px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .float-cta{
    left:0;transform:translateY(14px);width:100%;max-width:none;
    border-radius:16px;border-left:none;border-right:none;border-bottom:none;
    padding:12px 14px calc(12px + env(safe-area-inset-bottom));
    flex-wrap:wrap;bottom:0;
  }
  .float-cta.is-visible{transform:translateY(0)}
  .float-cta p{flex:1 1 100%;text-align:left;font-size:13.5px}
  .float-cta .btn{flex:1 1 auto}
  body{padding-bottom:132px}
}
@media (max-width:519px){
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-float{left:16px;right:16px;bottom:16px;padding:18px}
  .card{padding:22px}
  .f-card-3{align-items:flex-start}
}

/* roulang page: article */
:root{
    --bg:#0A0E13;
    --bg-2:#101823;
    --surface:rgba(255,255,255,.055);
    --surface-2:rgba(255,255,255,.035);
    --line:rgba(255,255,255,.10);
    --line-strong:rgba(111,227,242,.35);
    --primary:#1FA7C9;
    --primary-2:#6FE3F2;
    --accent:#FF7A2F;
    --ink:#F2F6FA;
    --ink-2:#A9B7C6;
    --ink-3:#7B8896;
    --r-card:16px;
    --r-img:14px;
    --r-btn:12px;
    --shadow-card:0 18px 40px rgba(0,0,0,.45);
    --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    padding-bottom:96px;
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.85;
    color:var(--ink);
    background:
      radial-gradient(900px 520px at 6% -8%, rgba(31,167,201,.16), transparent 62%),
      radial-gradient(760px 480px at 102% 10%, rgba(255,122,47,.10), transparent 60%),
      linear-gradient(180deg,#0A0E13 0%,#0B1119 45%,#0A0E13 100%);
    background-attachment:fixed;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    z-index:0;
    pointer-events:none;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140' viewBox='0 0 140 140'%3E%3Cpath d='M0 34 L35 20 L70 38 L105 22 L140 36' fill='none' stroke='%236FE3F2' stroke-opacity='0.045' stroke-width='1'/%3E%3Cpath d='M0 92 L35 78 L70 96 L105 80 L140 94' fill='none' stroke='%23FF7A2F' stroke-opacity='0.035' stroke-width='1'/%3E%3C/svg%3E");
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;cursor:pointer;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  :focus-visible{outline:2px solid var(--primary-2);outline-offset:2px;border-radius:6px;}

  .container{
    width:100%;
    max-width:1240px;
    margin:0 auto;
    padding:0 32px;
    position:relative;
    z-index:2;
  }

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:80;
    height:72px;
    display:flex;
    align-items:center;
    background:rgba(10,14,19,.72);
    border-bottom:1px solid transparent;
    transition:background .25s ease, border-color .25s ease, backdrop-filter .25s ease;
  }
  .site-header.is-scrolled{
    background:rgba(9,13,18,.88);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border-bottom-color:var(--line);
  }
  .nav-wrap{
    display:flex;
    align-items:center;
    gap:24px;
    height:72px;
  }
  .brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
  .brand-mark{
    width:42px;height:42px;flex:0 0 42px;
    display:grid;place-items:center;
    border-radius:13px;
    background:linear-gradient(150deg,rgba(31,167,201,.28),rgba(255,122,47,.14));
    border:1px solid var(--line-strong);
  }
  .brand-mark svg{width:24px;height:24px;}
  .brand-text{display:flex;flex-direction:column;line-height:1.12;}
  .brand-text strong{font-size:16px;font-weight:750;letter-spacing:.4px;color:var(--ink);}
  .brand-text span{font-size:12.5px;color:var(--primary-2);letter-spacing:1.4px;}
  .nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
  .nav-link{
    position:relative;
    display:inline-flex;
    align-items:center;
    height:40px;
    padding:0 12px;
    font-size:15px;
    font-weight:600;
    color:var(--ink-2);
    border-radius:10px;
    transition:color .2s ease,background .2s ease;
  }
  .nav-link:hover{color:var(--ink);background:rgba(255,255,255,.05);}
  .nav-link.is-active{color:var(--ink);}
  .nav-link.is-active::after{
    content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
    background:linear-gradient(90deg,var(--primary-2),var(--primary));
  }
  .nav-actions{display:flex;align-items:center;gap:10px;margin-left:8px;}

  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:46px;
    padding:0 22px;
    border-radius:var(--r-btn);
    font-size:15px;
    font-weight:600;
    letter-spacing:.3px;
    border:1px solid transparent;
    transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
    white-space:nowrap;
  }
  .btn-sm{height:44px;padding:0 18px;font-size:14.5px;}
  .btn-primary{
    color:#04222b;
    background:linear-gradient(180deg,#7FE9F5,#1FA7C9);
    box-shadow:0 0 0 1px rgba(111,227,242,.5),0 10px 30px rgba(31,167,201,.35);
  }
  .btn-primary:hover{
    box-shadow:0 0 0 1px rgba(111,227,242,.65),0 12px 42px rgba(31,167,201,.5);
    filter:brightness(1.08);
    transform:translateY(-1px);
  }
  .btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(111,227,242,.5),0 4px 14px rgba(31,167,201,.3);}
  .btn-ghost{
    color:var(--ink);
    border-color:var(--line);
    background:rgba(255,255,255,.03);
  }
  .btn-ghost:hover{border-color:var(--line-strong);color:#fff;background:rgba(111,227,242,.07);}
  .btn-accent{
    color:#26120a;
    background:linear-gradient(180deg,#FFA166,#FF7A2F);
    box-shadow:0 0 0 1px rgba(255,122,47,.45),0 10px 26px rgba(255,122,47,.28);
  }
  .btn-accent:hover{filter:brightness(1.06);transform:translateY(-1px);}
  .nav-toggle{
    display:none;
    width:44px;height:44px;flex:0 0 44px;
    border-radius:12px;
    border:1px solid var(--line);
    background:rgba(255,255,255,.04);
    position:relative;
  }
  .nav-toggle span,.nav-toggle::before,.nav-toggle::after{
    content:"";position:absolute;left:13px;right:13px;height:2px;border-radius:2px;background:var(--ink);
    transition:transform .25s ease,opacity .25s ease;
  }
  .nav-toggle::before{top:15px;}
  .nav-toggle span{top:21px;}
  .nav-toggle::after{top:27px;}
  .nav-toggle.is-open::before{transform:translateY(6px) rotate(45deg);}
  .nav-toggle.is-open span{opacity:0;}
  .nav-toggle.is-open::after{transform:translateY(-6px) rotate(-45deg);}
  .nav-mask{
    position:fixed;inset:0;z-index:70;
    background:rgba(6,9,13,.72);
    backdrop-filter:blur(4px);
    opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
  }
  .nav-mask.is-open{opacity:1;visibility:visible;}

  /* ---------- 通用卡片 / 徽章 ---------- */
  .panel{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    box-shadow:var(--shadow-card);
  }
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    height:28px;padding:0 12px;border-radius:999px;
    font-size:13px;font-weight:600;letter-spacing:.3px;
    color:var(--primary-2);
    background:rgba(31,167,201,.14);
    border:1px solid rgba(111,227,242,.28);
  }
  .badge-accent{
    color:#FFC6A3;background:rgba(255,122,47,.13);border-color:rgba(255,122,47,.35);
  }

  /* ---------- 面包屑 ---------- */
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13.5px;color:var(--ink-3);
    padding:28px 0 0;
  }
  .breadcrumb li{display:flex;align-items:center;gap:8px;}
  .breadcrumb li+li::before{content:"/";color:var(--ink-3);opacity:.6;}
  .breadcrumb a{color:var(--ink-2);transition:color .2s ease;}
  .breadcrumb a:hover{color:var(--primary-2);}
  .breadcrumb .current{color:var(--ink);}

  /* ---------- 文章布局 ---------- */
  .article-layout{
    display:grid;
    grid-template-columns:240px minmax(0,760px);
    justify-content:center;
    gap:48px;
    padding-top:28px;
    padding-bottom:72px;
    align-items:start;
  }
  .article-toc{
    position:sticky;
    top:100px;
    padding:20px 18px;
    border-radius:var(--r-card);
    background:var(--surface-2);
    border:1px solid var(--line);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
  }
  .article-toc h2{
    font-size:13px;letter-spacing:1.6px;text-transform:uppercase;
    color:var(--primary-2);font-weight:600;margin-bottom:14px;
  }
  .toc-list{display:flex;flex-direction:column;gap:2px;}
  .toc-list a{
    display:block;
    padding:8px 10px 8px 14px;
    font-size:14px;
    line-height:1.5;
    color:var(--ink-2);
    border-left:2px solid transparent;
    border-radius:0 10px 10px 0;
    transition:color .2s ease,background .2s ease,border-color .2s ease;
  }
  .toc-list a:hover{color:var(--ink);background:rgba(255,255,255,.05);}
  .toc-list a.is-current{
    color:var(--ink);
    border-left-color:var(--primary-2);
    background:rgba(31,167,201,.12);
  }
  .toc-mobile{margin-bottom:24px;display:none;}
  .toc-mobile summary{
    list-style:none;cursor:pointer;
    display:flex;align-items:center;justify-content:space-between;
    padding:14px 18px;font-size:15px;font-weight:600;color:var(--ink);
    background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-card);
  }
  .toc-mobile summary::-webkit-details-marker{display:none;}
  .toc-mobile summary::after{content:"＋";color:var(--primary-2);font-size:16px;}
  .toc-mobile[open] summary::after{content:"－";}
  .toc-mobile .toc-list{padding:12px 8px 6px;background:var(--surface-2);border:1px solid var(--line);border-top:none;border-radius:0 0 var(--r-card) var(--r-card);}

  .article-head{
    padding-bottom:26px;
    border-bottom:1px solid var(--line);
    margin-bottom:32px;
  }
  .article-head h1{
    font-size:clamp(28px,4vw,42px);
    line-height:1.2;
    font-weight:800;
    letter-spacing:.2px;
    margin:18px 0 18px;
  }
  .article-meta{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
    font-size:13px;color:var(--ink-3);
  }
  .article-meta .meta-item{display:inline-flex;align-items:center;gap:7px;}
  .article-meta .meta-item .num{
    font-family:var(--font-mono);
    font-variant-numeric:tabular-nums;
    color:var(--primary-2);
    font-weight:600;
  }
  .dot{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block;}

  .article-subhead{
    position:relative;
    margin-bottom:34px;
    border-radius:var(--r-card);
    overflow:hidden;
    border:1px solid var(--line);
    min-height:220px;
    display:flex;align-items:flex-end;
    background-image:linear-gradient(120deg,rgba(10,14,19,.86),rgba(10,14,19,.55)),url("/assets/images/backpic/back-2.webp");
    background-size:cover;
    background-position:center;
  }
  .article-subhead .inner{padding:26px 28px;}
  .article-subhead p{font-size:15px;color:var(--ink-2);max-width:620px;line-height:1.8;}

  /* ---------- 正文排版 ---------- */
  .article-body{
    max-width:760px;
    font-size:16px;
    line-height:1.85;
    color:#D6DEE7;
  }
  .article-body > *:first-child{margin-top:0;}
  .article-body h2{
    position:relative;
    font-size:clamp(21px,2.4vw,26px);
    line-height:1.35;
    font-weight:750;
    color:var(--ink);
    margin:48px 0 18px;
    padding-left:16px;
  }
  .article-body h2::before{
    content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:2px;
    background:linear-gradient(180deg,var(--primary-2),var(--primary));
  }
  .article-body h3{
    font-size:18.5px;
    font-weight:700;
    color:var(--ink);
    margin:32px 0 12px;
  }
  .article-body h4{
    font-size:16px;font-weight:700;color:var(--primary-2);margin:24px 0 10px;
  }
  .article-body p{margin:0 0 16px;}
  .article-body strong{color:var(--ink);font-weight:700;}
  .article-body a{
    color:var(--primary-2);
    border-bottom:1px solid rgba(111,227,242,.35);
    transition:border-color .2s ease,color .2s ease;
  }
  .article-body a:hover{color:#fff;border-bottom-color:#fff;}
  .article-body ul,.article-body ol{margin:0 0 20px;padding-left:8px;}
  .article-body ul li{
    position:relative;
    padding-left:20px;
    margin:9px 0;
  }
  .article-body ul li::before{
    content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;
    background:var(--primary-2);box-shadow:0 0 8px rgba(111,227,242,.55);
  }
  .article-body ol{counter-reset:li;padding-left:0;}
  .article-body ol li{
    position:relative;padding-left:34px;margin:10px 0;
    counter-increment:li;
  }
  .article-body ol li::before{
    content:counter(li);
    position:absolute;left:0;top:.34em;
    width:22px;height:22px;border-radius:8px;
    display:grid;place-items:center;
    font-family:var(--font-mono);font-size:12.5px;font-weight:700;color:#04222b;
    background:linear-gradient(180deg,#7FE9F5,#1FA7C9);
  }
  .article-body blockquote{
    margin:24px 0;
    padding:18px 22px;
    border-left:4px solid var(--primary);
    background:rgba(31,167,201,.06);
    border-radius:0 12px 12px 0;
    color:var(--ink-2);
  }
  .article-body blockquote p:last-child{margin-bottom:0;}
  .article-body img{
    width:100%;border-radius:var(--r-img);
    border:1px solid var(--line);
    margin:22px 0;
  }
  .article-body figure{margin:22px 0;}
  .article-body figcaption{
    font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px;
  }
  .article-body table{
    width:100%;
    border-collapse:separate;
    border-spacing:0;
    margin:24px 0;
    font-size:14.5px;
    border:1px solid var(--line);
    border-radius:12px;
    overflow:hidden;
  }
  .article-body th,.article-body td{
    padding:12px 16px;
    text-align:left;
    border-bottom:1px solid var(--line);
    vertical-align:top;
  }
  .article-body thead th{
    background:rgba(255,255,255,.045);
    color:var(--primary-2);
    font-weight:600;
    font-size:14px;
  }
  .article-body tbody tr:last-child td{border-bottom:none;}
  .article-body tbody tr:hover{background:rgba(255,255,255,.025);}
  .article-body code{
    font-family:var(--font-mono);
    font-size:14px;
    padding:2px 7px;
    border-radius:6px;
    background:rgba(255,255,255,.07);
    color:var(--primary-2);
  }
  .article-body hr{border:none;border-top:1px solid var(--line);margin:34px 0;}

  /* ---------- 标签 ---------- */
  .article-tags{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;
    margin-top:40px;padding-top:26px;border-top:1px solid var(--line);
  }
  .article-tags .label{font-size:13.5px;color:var(--ink-3);}
  .tag{
    display:inline-flex;align-items:center;height:32px;padding:0 14px;
    font-size:13.5px;color:var(--ink-2);
    border:1px solid var(--line);border-radius:999px;
    background:rgba(255,255,255,.03);
    transition:color .2s ease,border-color .2s ease,transform .2s ease;
  }
  .tag:hover{color:var(--primary-2);border-color:var(--line-strong);transform:translateY(-2px);}

  /* ---------- 空状态 ---------- */
  .empty-state{
    text-align:center;
    padding:56px 28px;
    border:1px dashed rgba(255,255,255,.2);
    border-radius:var(--r-card);
    background:var(--surface-2);
  }
  .empty-state h2{font-size:22px;font-weight:750;margin-bottom:12px;color:var(--ink);}
  .empty-state p{color:var(--ink-2);font-size:15px;max-width:460px;margin:0 auto 22px;}

  /* ---------- 相关推荐 ---------- */
  .related-section{padding:40px 0 80px;}
  .section-head{
    display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;
    margin-bottom:28px;
  }
  .section-head h2{
    font-size:clamp(22px,3vw,30px);font-weight:750;line-height:1.3;
  }
  .section-head p{font-size:14.5px;color:var(--ink-2);margin-top:8px;}
  .link-more{
    font-size:14.5px;color:var(--primary-2);font-weight:600;
    display:inline-flex;align-items:center;gap:6px;
    transition:gap .2s ease,color .2s ease;
  }
  .link-more:hover{gap:10px;color:#fff;}

  .card-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:24px;
  }
  .card{
    display:flex;flex-direction:column;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    box-shadow:var(--shadow-card);
    overflow:hidden;
    transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  }
  .card:hover{
    transform:translateY(-3px);
    border-color:var(--line-strong);
    box-shadow:0 22px 48px rgba(0,0,0,.52);
  }
  .card-cover{
    aspect-ratio:16/10;
    overflow:hidden;
    background:linear-gradient(140deg,rgba(31,167,201,.22),rgba(255,122,47,.14));
    border-bottom:1px solid var(--line);
  }
  .card-cover img{
    width:100%;height:100%;object-fit:cover;
    transition:transform .4s ease;
  }
  .card:hover .card-cover img{transform:scale(1.04);}
  .card-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:12px;flex:1;}
  .card-body h3{
    font-size:17px;line-height:1.5;font-weight:700;color:var(--ink);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card-body p{
    font-size:14.5px;line-height:1.7;color:var(--ink-2);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card-meta{
    margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
    display:flex;align-items:center;justify-content:space-between;
    font-size:13px;color:var(--ink-3);
  }
  .card-meta .arrow{color:var(--primary-2);transition:transform .2s ease;}
  .card:hover .card-meta .arrow{transform:translateX(4px);}

  /* ---------- 结尾 CTA ---------- */
  .cta-band{
    position:relative;
    padding:96px 0;
  }
  .cta-band .cta-inner{
    position:relative;
    overflow:hidden;
    border-radius:20px;
    border:1px solid var(--line);
    background-image:linear-gradient(120deg,rgba(10,14,19,.92),rgba(10,14,19,.68)),url("/assets/images/backpic/back-1.webp");
    background-size:cover;
    background-position:center;
    padding:56px 48px;
    display:grid;
    grid-template-columns:minmax(0,1fr) auto;
    gap:32px;
    align-items:center;
  }
  .cta-band h2{font-size:clamp(22px,3vw,32px);font-weight:750;line-height:1.3;}
  .cta-band p{color:var(--ink-2);font-size:15px;margin-top:12px;max-width:560px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

  /* ---------- 页脚 ---------- */
  .site-footer{
    position:relative;
    border-top:1px solid var(--line);
    padding:72px 0 28px;
    background:linear-gradient(180deg,rgba(31,167,201,.06),transparent 30%);
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1fr;
    gap:40px;
  }
  .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
  .footer-desc{font-size:14px;line-height:1.8;color:var(--ink-2);max-width:340px;}
  .footer-col h4{
    font-size:14px;font-weight:700;color:var(--primary-2);
    letter-spacing:.6px;margin-bottom:18px;
  }
  .footer-col ul{display:flex;flex-direction:column;gap:11px;}
  .footer-col a,.footer-col span{
    font-size:14px;color:var(--ink-2);
    display:inline-block;
    transition:color .2s ease,transform .2s ease;
  }
  .footer-col a:hover{color:var(--ink);transform:translateX(3px);}
  .footer-bottom{
    margin-top:48px;padding-top:22px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  }
  .footer-bottom p{font-size:13px;color:var(--ink-3);}
  .to-top{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13.5px;color:var(--ink-2);
    padding:8px 14px;border:1px solid var(--line);border-radius:999px;
    transition:color .2s ease,border-color .2s ease,transform .2s ease;
  }
  .to-top svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
  .to-top:hover{color:var(--primary-2);border-color:var(--line-strong);transform:translateY(-2px);}

  /* ---------- 底部固定转化条 ---------- */
  .sticky-cta{
    position:fixed;
    left:50%;bottom:20px;
    transform:translate(-50%,24px);
    width:100%;
    max-width:720px;
    padding:0 20px;
    z-index:90;
    opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .3s ease,transform .3s ease,visibility .3s ease;
  }
  .sticky-cta.is-visible{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0);}
  .sticky-cta.is-closed{display:none;}
  .sticky-cta-inner{
    display:flex;align-items:center;gap:16px;
    height:66px;
    padding:0 12px 0 24px;
    border-radius:999px;
    background:rgba(12,18,25,.92);
    border:1px solid var(--line);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    box-shadow:0 18px 44px rgba(0,0,0,.5);
  }
  .sticky-cta-inner p{
    font-size:14.5px;color:var(--ink-2);flex:1;min-width:0;
    overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  }
  .sticky-cta-actions{display:flex;align-items:center;gap:8px;flex-shrink:0;}
  .sticky-close{
    width:40px;height:40px;border-radius:999px;
    border:1px solid var(--line);
    background:rgba(255,255,255,.04);
    color:var(--ink-2);
    display:grid;place-items:center;
    font-size:15px;line-height:1;
    transition:color .2s ease,border-color .2s ease;
  }
  .sticky-close:hover{color:var(--ink);border-color:var(--line-strong);}

  /* ---------- 响应式 ---------- */
  @media (max-width:1279px){
    .article-layout{grid-template-columns:220px minmax(0,680px);gap:36px;}
  }
  @media (max-width:1023px){
    .container{padding:0 24px;}
    .nav-links{
      position:fixed;
      top:64px;right:0;bottom:0;
      width:320px;max-width:86vw;
      flex-direction:column;
      align-items:stretch;
      gap:0;
      margin:0;
      padding:20px 20px 32px;
      background:rgba(10,14,19,.97);
      backdrop-filter:blur(18px);
      -webkit-backdrop-filter:blur(18px);
      border-left:1px solid var(--line);
      transform:translateX(105%);
      transition:transform .32s ease;
      z-index:75;
      overflow-y:auto;
    }
    .nav-links.is-open{transform:translateX(0);}
    .nav-link{
      height:52px;padding:0 4px;font-size:16px;border-radius:0;
      border-bottom:1px solid var(--line);
      justify-content:space-between;
    }
    .nav-link::after{content:"›";color:var(--ink-3);font-size:18px;}
    .nav-link.is-active::after{content:"›";left:auto;right:auto;bottom:auto;height:auto;width:auto;background:none;position:static;}
    .nav-link.is-active{color:var(--primary-2);}
    .nav-toggle{display:block;}
    .nav-actions .btn-ghost{display:none;}
    .article-layout{
      grid-template-columns:minmax(0,1fr);
      gap:0;
      padding-top:20px;
      padding-bottom:56px;
    }
    .article-toc{display:none;}
    .toc-mobile{display:block;}
    .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
    .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
    .cta-band{padding:72px 0;}
    .cta-band .cta-inner{grid-template-columns:minmax(0,1fr);padding:40px 32px;}
  }
  @media (max-width:767px){
    body{padding-bottom:118px;}
    .container{padding:0 20px;}
    .site-header{height:64px;}
    .nav-wrap{height:64px;gap:12px;}
    .brand-mark{width:38px;height:38px;flex-basis:38px;}
    .brand-text strong{font-size:15px;}
    .brand-text span{font-size:11.5px;}
    .nav-links{top:64px;}
    .card-grid{grid-template-columns:minmax(0,1fr);}
    .article-head h1{font-size:clamp(24px,6.6vw,30px);}
    .article-body{font-size:15.5px;}
    .cta-band .cta-inner{padding:32px 22px;}
    .cta-actions{flex-direction:column;align-items:stretch;}
    .cta-actions .btn{width:100%;}
    .sticky-cta{
      left:0;transform:translateY(20px);
      max-width:none;padding:0;
      bottom:0;
    }
    .sticky-cta.is-visible{transform:translateY(0);}
    .sticky-cta-inner{
      border-radius:16px 16px 0 0;
      height:auto;
      padding:12px 16px calc(12px + env(safe-area-inset-bottom));
      flex-wrap:wrap;
    }
    .sticky-cta-inner p{width:100%;white-space:normal;font-size:13.5px;line-height:1.6;}
    .sticky-cta-actions{width:100%;}
    .sticky-cta-actions .btn{flex:1;}
    .footer-grid{grid-template-columns:1fr;gap:32px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }
  @media (max-width:520px){
    .article-body table{font-size:13.5px;}
    .article-body th,.article-body td{padding:10px 12px;}
    .article-subhead{min-height:180px;}
  }
  @media (min-width:1440px){
    .container{padding:0 40px;}
  }

/* roulang page: category1 */
:root{
    --bg:#0A0E13;
    --bg-2:#101823;
    --surface:rgba(255,255,255,.055);
    --surface-2:rgba(255,255,255,.035);
    --line:rgba(255,255,255,.10);
    --line-strong:rgba(111,227,242,.35);
    --primary:#1FA7C9;
    --primary-2:#6FE3F2;
    --accent:#FF7A2F;
    --ink:#F2F6FA;
    --ink-2:#A9B7C6;
    --ink-3:#7B8896;
    --r-card:16px;
    --r-img:14px;
    --r-btn:12px;
    --shadow-card:0 18px 40px rgba(0,0,0,.45);
    --shadow-soft:0 10px 30px rgba(0,0,0,.30);
    --container:1240px;
    --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
    --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    padding:0 0 96px;
    font-family:var(--font);
    font-size:16px;
    line-height:1.85;
    color:var(--ink);
    background:var(--bg);
    overflow-x:hidden;
    -webkit-font-smoothing:antialiased;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    z-index:0;
    pointer-events:none;
    background:
      radial-gradient(780px 540px at 4% -8%, rgba(31,167,201,.16), transparent 66%),
      radial-gradient(700px 500px at 104% 108%, rgba(255,122,47,.10), transparent 64%);
  }
  body::after{
    content:"";
    position:fixed;
    inset:0;
    z-index:0;
    pointer-events:none;
    opacity:.35;
    background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'><g fill='none' stroke='%231FA7C9' stroke-opacity='0.10' stroke-width='1'><path d='M0 120 L40 96 L80 118 L120 92 L160 112'/><path d='M0 66 L44 44 L86 64 L128 40 L160 58'/></g></svg>");
  }
  img{max-width:100%;display:block;border:0;}
  a{color:inherit;text-decoration:none;transition:color .22s ease;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  ul,ol{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4,p,figure{margin:0;}
  strong{font-weight:700;}
  :focus-visible{outline:2px solid var(--primary-2);outline-offset:2px;border-radius:6px;}

  .container{
    width:100%;
    max-width:var(--container);
    margin:0 auto;
    padding:0 32px;
    position:relative;
    z-index:2;
  }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:48px;
    padding:0 24px;
    border-radius:var(--r-btn);
    font-size:15px;
    font-weight:600;
    letter-spacing:.02em;
    white-space:nowrap;
    transition:transform .2s ease, box-shadow .25s ease, background-color .22s ease, border-color .22s ease, color .22s ease, filter .22s ease;
  }
  .btn-sm{height:44px;padding:0 20px;font-size:15px;}
  .btn-primary{
    color:#04161C;
    background:linear-gradient(180deg,#3FC0DE 0%,#1FA7C9 100%);
    box-shadow:0 0 0 1px rgba(111,227,242,.5), 0 10px 30px rgba(31,167,201,.35), inset 0 1px 0 rgba(255,255,255,.35);
  }
  .btn-primary:hover{
    filter:brightness(1.08);
    box-shadow:0 0 0 1px rgba(111,227,242,.6), 0 12px 42px rgba(31,167,201,.55), inset 0 1px 0 rgba(255,255,255,.4);
  }
  .btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(111,227,242,.45), 0 6px 16px rgba(31,167,201,.4);}
  .btn-ghost{
    color:var(--ink);
    background:rgba(255,255,255,.04);
    border:1px solid var(--line);
  }
  .btn-ghost:hover{
    border-color:var(--primary);
    color:var(--primary-2);
    background:rgba(31,167,201,.10);
  }
  .btn-ghost:active{transform:translateY(1px);}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(10,14,19,.78);
    border-bottom:1px solid transparent;
    transition:background-color .25s ease, border-color .25s ease, backdrop-filter .25s ease;
  }
  .site-header.is-scrolled{
    background:rgba(10,14,19,.86);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border-bottom-color:var(--line);
  }
  .nav-wrap{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    height:72px;
  }
  .brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
  .brand-mark{
    width:42px;height:42px;
    display:inline-flex;align-items:center;justify-content:center;
    border-radius:13px;
    background:linear-gradient(150deg, rgba(31,167,201,.26), rgba(255,122,47,.12));
    border:1px solid rgba(111,227,242,.28);
    flex-shrink:0;
  }
  .brand-mark svg{width:24px;height:24px;}
  .brand-text{display:flex;flex-direction:column;line-height:1.16;}
  .brand-text strong{font-size:16px;font-weight:800;letter-spacing:.02em;}
  .brand-text span{font-size:12px;color:var(--ink-3);letter-spacing:.10em;}
  .nav-links{display:flex;align-items:center;gap:6px;}
  .nav-link{
    position:relative;
    display:inline-block;
    padding:10px 12px;
    font-size:15px;
    font-weight:600;
    color:var(--ink-2);
    border-radius:9px;
    transition:color .2s ease, background-color .2s ease;
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:12px;right:12px;bottom:2px;
    height:2px;
    border-radius:2px;
    background:var(--primary-2);
    transform:scaleX(0);
    transform-origin:left;
    transition:transform .24s ease;
  }
  .nav-link:hover{color:var(--ink);background:rgba(255,255,255,.05);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.is-active{color:var(--primary-2);}
  .nav-link.is-active::after{transform:scaleX(1);}
  .nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .nav-toggle{
    display:none;
    width:44px;height:44px;
    border-radius:12px;
    border:1px solid var(--line);
    background:rgba(255,255,255,.04);
    position:relative;
  }
  .nav-toggle span,
  .nav-toggle span::before,
  .nav-toggle span::after{
    position:absolute;left:50%;top:50%;
    width:18px;height:2px;border-radius:2px;background:var(--ink);
    transform:translate(-50%,-50%);
    transition:transform .25s ease, opacity .25s ease;
  }
  .nav-toggle span::before{content:"";top:-6px;left:0;transform:translate(0,0);}
  .nav-toggle span::after{content:"";top:6px;left:0;transform:translate(0,0);}
  .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);}

  .drawer-mask{
    position:fixed;inset:0;
    background:rgba(6,9,13,.72);
    backdrop-filter:blur(4px);
    -webkit-backdrop-filter:blur(4px);
    opacity:0;visibility:hidden;
    transition:opacity .28s ease, visibility .28s ease;
    z-index:70;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;
    width:320px;max-width:86vw;
    z-index:80;
    padding:22px 20px calc(22px + env(safe-area-inset-bottom));
    background:linear-gradient(180deg, rgba(16,24,35,.98), rgba(10,14,19,.99));
    border-left:1px solid var(--line);
    display:flex;flex-direction:column;
    transform:translateX(102%);
    transition:transform .3s cubic-bezier(.4,.0,.2,1);
  }
  .drawer.is-open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
  .drawer-head span{font-size:13px;color:var(--ink-3);letter-spacing:.14em;}
  .drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);font-size:20px;line-height:1;color:var(--ink-2);}
  .drawer-close:hover{color:var(--primary-2);border-color:var(--primary);}
  .drawer-list{display:flex;flex-direction:column;flex:1;overflow-y:auto;}
  .drawer-list a{
    display:flex;align-items:center;justify-content:space-between;
    height:52px;padding:0 4px;
    font-size:15px;font-weight:600;color:var(--ink-2);
    border-bottom:1px solid var(--line);
  }
  .drawer-list a:hover,.drawer-list a.is-active{color:var(--primary-2);}
  .drawer-list a::after{content:"›";font-size:20px;color:var(--ink-3);}
  .drawer-cta{margin-top:18px;display:flex;flex-direction:column;gap:10px;}
  .drawer-cta .btn{width:100%;}

  /* ---------- 页头横幅 ---------- */
  .page-hero{
    position:relative;
    overflow:hidden;
    border-bottom:1px solid var(--line);
    padding:64px 0 72px;
  }
  .page-hero-bg{
    position:absolute;inset:0;
    width:100%;height:100%;
    object-fit:cover;
    opacity:.30;
    z-index:0;
  }
  .page-hero-mask{
    position:absolute;inset:0;z-index:1;
    background:
      radial-gradient(620px 420px at 8% 0%, rgba(31,167,201,.22), transparent 68%),
      linear-gradient(180deg, rgba(10,14,19,.72) 0%, rgba(10,14,19,.92) 62%, rgba(10,14,19,.99) 100%);
  }
  .breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:22px;}
  .breadcrumb li{display:flex;align-items:center;gap:8px;}
  .breadcrumb li+li::before{content:"/";color:rgba(255,255,255,.22);}
  .breadcrumb a:hover{color:var(--primary-2);}
  .breadcrumb [aria-current]{color:var(--ink-2);}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    height:30px;padding:0 14px;
    border-radius:999px;
    font-size:13px;font-weight:600;letter-spacing:.06em;
    color:var(--primary-2);
    background:rgba(31,167,201,.12);
    border:1px solid rgba(111,227,242,.28);
    margin-bottom:18px;
  }
  .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
  .page-hero h1{
    font-size:clamp(30px,5vw,54px);
    line-height:1.15;
    font-weight:800;
    letter-spacing:-.01em;
    max-width:15em;
  }
  .page-hero h1 em{font-style:normal;color:var(--primary-2);}
  .page-hero .lead{
    margin-top:20px;
    max-width:760px;
    font-size:17px;
    line-height:1.85;
    color:var(--ink-2);
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  .hero-facts{
    display:flex;flex-wrap:wrap;
    gap:0;
    margin-top:44px;
    border-top:1px solid var(--line);
    padding-top:26px;
  }
  .hero-facts li{
    padding:0 28px;
    border-left:1px solid var(--line);
  }
  .hero-facts li:first-child{padding-left:0;border-left:0;}
  .hero-facts .num{
    font-family:var(--mono);
    font-variant-numeric:tabular-nums;
    font-size:30px;
    font-weight:700;
    color:var(--primary-2);
    line-height:1.2;
  }
  .hero-facts .lbl{font-size:13px;color:var(--ink-3);}

  /* ---------- 通用板块 ---------- */
  .section{padding:96px 0;position:relative;}
  .section-tight{padding:72px 0;}
  .section-head{max-width:760px;margin-bottom:44px;}
  .section-head h2{
    font-size:clamp(24px,3.4vw,36px);
    line-height:1.25;
    font-weight:750;
    letter-spacing:-.01em;
  }
  .section-head p{margin-top:16px;color:var(--ink-2);font-size:16px;}
  .divider{height:1px;background:var(--line);}

  .card{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    box-shadow:var(--shadow-card);
    transition:border-color .25s ease, transform .25s ease;
    overflow:hidden;
  }
  .card:hover{border-color:var(--line-strong);transform:translateY(-2px);}
  .card-flat:hover{transform:none;}

  .media-frame{
    position:relative;
    border-radius:var(--r-img);
    overflow:hidden;
    border:1px solid var(--line);
    background:linear-gradient(140deg, rgba(31,167,201,.18), rgba(255,122,47,.10));
  }
  .media-frame img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
  .media-frame:hover img{transform:scale(1.04);}
  .ratio-16-10{aspect-ratio:16 / 10;}
  .ratio-16-9{aspect-ratio:16 / 9;}

  /* ---------- 概览双栏 ---------- */
  .grid-12{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
  .col-5{grid-column:span 5;}
  .col-7{grid-column:span 7;}
  .col-12{grid-column:span 12;}
  .col-6{grid-column:span 6;}
  .col-8{grid-column:span 8;}
  .col-4{grid-column:span 4;}

  .overview-card{padding:16px;}
  .overview-card .media-frame{margin-bottom:18px;}
  .overview-card h3{font-size:19px;font-weight:700;padding:0 6px;}
  .overview-card p{margin-top:10px;padding:0 6px;font-size:14.5px;line-height:1.7;color:var(--ink-2);}
  .overview-card .card-foot{
    margin-top:18px;padding:14px 6px 4px;
    border-top:1px solid var(--line);
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    font-size:13px;color:var(--ink-3);
  }
  .overview-card .card-foot b{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--primary-2);font-size:15px;}

  .point-list{display:flex;flex-direction:column;height:100%;}
  .point{
    display:flex;gap:18px;
    padding:22px 0;
    border-bottom:1px solid var(--line);
  }
  .point:first-child{padding-top:2px;}
  .point:last-child{border-bottom:0;}
  .icon-badge{
    width:52px;height:52px;flex-shrink:0;
    display:inline-flex;align-items:center;justify-content:center;
    border-radius:14px;
    background:rgba(31,167,201,.12);
    border:1px solid rgba(111,227,242,.20);
  }
  .icon-badge svg{width:28px;height:28px;stroke:var(--primary-2);fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;}
  .point h3{font-size:18px;font-weight:700;line-height:1.5;}
  .point p{margin-top:6px;font-size:14.5px;line-height:1.7;color:var(--ink-2);}
  .point-list .foot{margin-top:auto;padding-top:22px;display:flex;justify-content:flex-end;}

  /* ---------- 场景交替 ---------- */
  .scene{
    display:grid;
    grid-template-columns:repeat(12,1fr);
    gap:24px;
    align-items:center;
  }
  .scene+.scene{margin-top:72px;}
  .scene-text{grid-column:span 6;}
  .scene-media{grid-column:span 6;}
  .scene-media.reverse{order:-1;}
  .scene-no{
    display:inline-flex;align-items:center;gap:8px;
    height:28px;padding:0 12px;border-radius:999px;
    font-family:var(--mono);
    font-size:12.5px;font-weight:700;letter-spacing:.08em;
    color:#1A0E05;
    background:linear-gradient(180deg,#FF9557,#FF7A2F);
    margin-bottom:16px;
  }
  .scene-text h3{font-size:clamp(20px,2.4vw,26px);font-weight:750;line-height:1.4;}
  .scene-text p{margin-top:14px;color:var(--ink-2);font-size:15.5px;}
  .scene-quote{
    margin-top:20px;
    padding-left:16px;
    border-left:3px solid var(--primary);
    font-size:15px;
    color:var(--ink);
    font-weight:600;
  }

  /* ---------- 对比列表 ---------- */
  .compare{
    display:grid;
    grid-template-columns:repeat(12,1fr);
    gap:24px;
  }
  .compare-card{padding:26px 24px;}
  .compare-card h3{font-size:18px;font-weight:700;display:flex;align-items:center;gap:10px;}
  .compare-card h3 span.dot{width:9px;height:9px;border-radius:50%;background:var(--primary-2);}
  .compare-card.is-alt h3 span.dot{background:var(--accent);}
  .compare-list{margin-top:16px;}
  .compare-list li{
    display:flex;gap:12px;
    padding:13px 0;
    border-bottom:1px dashed rgba(255,255,255,.10);
    font-size:14.8px;
    color:var(--ink-2);
  }
  .compare-list li:last-child{border-bottom:0;}
  .compare-list li::before{
    content:"";
    width:7px;height:7px;margin-top:9px;border-radius:50%;
    background:var(--primary);flex-shrink:0;
  }
  .compare-card.is-alt .compare-list li::before{background:var(--accent);}
  .compare-note{margin-top:18px;font-size:13px;color:var(--ink-3);}

  /* ---------- 数据条 ---------- */
  .stats{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:1px;
    background:var(--line);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
  }
  .stat{
    background:rgba(16,24,35,.72);
    padding:30px 24px;
    transition:background-color .25s ease;
  }
  .stat:hover{background:rgba(31,167,201,.10);}
  .stat .num{
    font-family:var(--mono);
    font-variant-numeric:tabular-nums;
    font-size:34px;
    font-weight:700;
    color:var(--primary-2);
    line-height:1.15;
  }
  .stat .num small{font-size:16px;margin-left:2px;color:var(--ink-2);}
  .stat .lbl{margin-top:6px;font-size:13px;color:var(--ink-3);}

  /* ---------- FAQ ---------- */
  .faq-list{display:flex;flex-direction:column;gap:10px;max-width:900px;}
  .faq-item{
    background:var(--surface-2);
    border:1px solid var(--line);
    border-radius:14px;
    overflow:hidden;
    transition:border-color .22s ease, background-color .22s ease;
  }
  .faq-item[open]{border-color:rgba(111,227,242,.30);background:rgba(31,167,201,.06);}
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 20px;
    font-size:16.5px;font-weight:600;
    position:relative;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"+";
    font-size:22px;line-height:1;
    color:var(--primary-2);
    transition:transform .25s ease, color .25s ease;
    flex-shrink:0;
  }
  .faq-item[open] summary::after{content:"–";}
  .faq-item summary:hover{color:var(--primary-2);}
  .faq-item[open] summary::before{
    content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;
    border-radius:0 4px 4px 0;background:var(--primary-2);
  }
  .faq-answer{padding:0 20px 20px 20px;font-size:15px;line-height:1.8;color:var(--ink-2);}
  .faq-answer strong{color:var(--ink);}

  /* ---------- CTA ---------- */
  .cta-panel{
    position:relative;
    overflow:hidden;
    border-radius:22px;
    border:1px solid rgba(111,227,242,.24);
    background:
      radial-gradient(560px 320px at 8% 0%, rgba(31,167,201,.26), transparent 68%),
      linear-gradient(140deg, rgba(16,24,35,.96), rgba(10,14,19,.98));
    padding:56px 48px;
    display:grid;
    grid-template-columns:1fr auto;
    gap:36px;
    align-items:center;
  }
  .cta-panel h2{font-size:clamp(23px,3vw,32px);font-weight:750;line-height:1.3;}
  .cta-panel p{margin-top:14px;color:var(--ink-2);max-width:640px;font-size:15.5px;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
  .cta-note{margin-top:16px;font-size:13px;color:var(--ink-3);}

  /* ---------- 页脚 ---------- */
  .site-footer{
    position:relative;
    margin-top:20px;
    border-top:1px solid var(--line);
    background:linear-gradient(180deg, rgba(31,167,201,.06), rgba(10,14,19,0) 120px);
    padding:72px 0 26px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.5fr 1fr 1fr 1fr;
    gap:40px;
  }
  .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
  .footer-desc{font-size:14px;line-height:1.8;color:var(--ink-2);max-width:360px;}
  .footer-col h4{
    font-size:14px;
    font-weight:700;
    letter-spacing:.10em;
    color:var(--primary-2);
    margin-bottom:16px;
  }
  .footer-col ul{display:flex;flex-direction:column;gap:11px;}
  .footer-col a,.footer-col span{font-size:14px;color:var(--ink-2);}
  .footer-col a:hover{color:var(--primary-2);transform:translateX(2px);display:inline-block;}
  .footer-bottom{
    margin-top:52px;
    padding-top:22px;
    border-top:1px solid var(--line);
    display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
    font-size:13px;color:var(--ink-3);
  }
  .to-top{display:inline-flex;align-items:center;gap:7px;color:var(--ink-2);font-size:13px;}
  .to-top svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;}
  .to-top:hover{color:var(--primary-2);}

  /* ---------- 底部固定转化条 ---------- */
  .convert-bar{
    position:fixed;
    left:50%;
    bottom:20px;
    transform:translate(-50%, 14px);
    width:min(720px, calc(100% - 40px));
    z-index:55;
    opacity:0;
    visibility:hidden;
    transition:opacity .3s ease, transform .3s ease, visibility .3s ease;
  }
  .convert-bar.is-visible{opacity:1;visibility:visible;transform:translate(-50%,0);}
  .convert-inner{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    height:64px;
    padding:0 10px 0 22px;
    border-radius:999px;
    background:rgba(16,24,35,.92);
    border:1px solid var(--line);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    box-shadow:0 18px 40px rgba(0,0,0,.5);
  }
  .convert-inner p{font-size:14px;color:var(--ink-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .convert-actions{display:flex;align-items:center;gap:8px;flex-shrink:0;}
  .convert-close{
    width:36px;height:36px;border-radius:50%;
    border:1px solid var(--line);
    color:var(--ink-3);font-size:18px;line-height:1;
  }
  .convert-close:hover{color:var(--primary-2);border-color:var(--primary);}

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .container{padding:0 24px;}
    .nav-links,.nav-actions .btn{display:none;}
    .nav-toggle{display:inline-flex;}
    .section{padding:72px 0;}
    .section-tight{padding:56px 0;}
    .col-5,.col-7,.col-6,.col-8,.col-4{grid-column:span 12;}
    .scene-text,.scene-media{grid-column:span 12;}
    .scene-media.reverse{order:0;}
    .scene+.scene{margin-top:54px;}
    .stats{grid-template-columns:repeat(2,1fr);}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .cta-panel{grid-template-columns:1fr;padding:44px 34px;}
    .hero-facts li{padding:0 20px;}
    .hero-facts .num{font-size:26px;}
  }
  @media (max-width:639px){
    .container{padding:0 20px;}
    body{font-size:15.5px;padding-bottom:104px;}
    .nav-wrap{height:64px;}
    .brand-text span{letter-spacing:.06em;}
    .page-hero{padding:44px 0 52px;}
    .page-hero .lead{font-size:15.5px;}
    .hero-actions .btn{width:100%;}
    .hero-facts{margin-top:32px;padding-top:20px;}
    .hero-facts li{padding:0 16px 0 0;border-left:0;}
    .hero-facts li+li{padding-left:16px;border-left:1px solid var(--line);}
    .hero-facts .num{font-size:22px;}
    .section{padding:52px 0;}
    .section-tight{padding:44px 0;}
    .section-head{margin-bottom:30px;}
    .stats{grid-template-columns:1fr 1fr;}
    .stat{padding:22px 18px;}
    .stat .num{font-size:27px;}
    .footer-grid{grid-template-columns:1fr;gap:30px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
    .convert-bar{width:100%;left:0;transform:translateY(14px);bottom:0;}
    .convert-bar.is-visible{transform:translateY(0);}
    .convert-inner{
      height:auto;
      border-radius:0;
      padding:12px 16px calc(12px + env(safe-area-inset-bottom));
      flex-direction:column;
      align-items:stretch;
      gap:10px;
    }
    .convert-inner p{white-space:normal;font-size:13.5px;}
    .convert-actions .btn{flex:1;}
    .cta-panel{padding:34px 22px;}
    .fnone{display:none;}
  }

/* roulang page: category3 */
:root{
  --bg:#0A0E13;
  --bg-2:#101823;
  --surface:rgba(255,255,255,.055);
  --surface-2:rgba(255,255,255,.085);
  --line:rgba(255,255,255,.10);
  --line-2:rgba(111,227,242,.35);
  --primary:#1FA7C9;
  --primary-2:#6FE3F2;
  --accent:#FF7A2F;
  --ink:#F2F6FA;
  --ink-2:#A9B7C6;
  --ink-3:#7B8896;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:12px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
.site-body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  padding-bottom:96px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
.site-body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(760px 520px at 6% -8%, rgba(31,167,201,.17), transparent 62%),
    radial-gradient(680px 520px at 104% 106%, rgba(255,122,47,.10), transparent 60%);
}
.site-body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.4;
  background-image:
    linear-gradient(rgba(255,255,255,.026) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.026) 1px, transparent 1px);
  background-size:96px 96px;
}
main, .site-header, .site-footer{position:relative;z-index:1}
img{max-width:100%;display:block;border-style:solid}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none;margin:0;padding:0}
p{margin:0}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 32px}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(10,14,19,.74);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.site-header.is-scrolled{
  background:rgba(10,14,19,.92);
  border-bottom-color:var(--line);
  box-shadow:0 12px 30px rgba(0,0,0,.42);
}
.nav-wrap{display:flex;align-items:center;gap:26px;height:72px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(31,167,201,.22),rgba(255,255,255,.04));
  border:1px solid var(--line);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
}
.brand-mark svg{width:24px;height:24px}
.brand-text{display:flex;flex-direction:column;line-height:1.18}
.brand-text strong{font-size:15px;font-weight:800;letter-spacing:.02em;color:var(--ink)}
.brand-text span{font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--ink-2)}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;
  padding:0 12px;border-radius:10px;font-size:15px;font-weight:600;color:var(--ink-2);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--ink);background:rgba(255,255,255,.05)}
.nav-link:focus-visible{outline:2px solid var(--primary-2);outline-offset:2px}
.nav-link.is-active{color:var(--ink)}
.nav-link.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;position:relative;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.04);
}
.nav-toggle span{position:absolute;left:13px;right:13px;top:50%;height:2px;margin-top:-1px;background:var(--ink);border-radius:2px;transition:.25s ease}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;right:0;height:2px;background:var(--ink);border-radius:2px;transition:.25s ease}
.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{transform:rotate(45deg);top:0}
.nav-toggle[aria-expanded="true"] span::after{transform:rotate(-45deg);top:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  border:1px solid transparent;
  transition:box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease,transform .16s ease,filter .22s ease;
}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:10px}
.btn-primary{
  background:linear-gradient(180deg,#2BB6D8,#1893B4);
  color:#04222B;
  box-shadow:0 0 0 1px rgba(111,227,242,.5), 0 10px 30px rgba(31,167,201,.35), inset 0 1px 0 rgba(255,255,255,.35);
}
.btn-primary:hover{filter:brightness(1.08);box-shadow:0 0 0 1px rgba(111,227,242,.62), 0 10px 42px rgba(31,167,201,.5), inset 0 1px 0 rgba(255,255,255,.4)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(111,227,242,.45), 0 6px 16px rgba(31,167,201,.32), inset 0 1px 0 rgba(255,255,255,.25)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink-2)}
.btn-ghost:hover{border-color:var(--primary);color:var(--ink);background:rgba(31,167,201,.08)}
.btn-ghost:active{transform:translateY(1px)}
.btn:focus-visible{outline:2px solid var(--primary-2);outline-offset:2px}

/* ---------- 移动端抽屉 ---------- */
.mobile-mask{
  position:fixed;inset:0;z-index:80;background:rgba(6,9,13,.72);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.mobile-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;width:320px;max-width:86vw;
  display:flex;flex-direction:column;padding:20px;
  background:linear-gradient(180deg,#101823,#0A0E13);
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .32s cubic-bezier(.4,0,.2,1);
}
.mobile-drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;color:var(--ink-2)}
.drawer-close:hover{color:var(--ink);border-color:var(--primary)}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;height:52px;
  font-size:15px;font-weight:600;color:var(--ink-2);border-bottom:1px solid var(--line);
  transition:color .2s ease,padding-left .2s ease;
}
.drawer-nav a:hover{color:var(--ink);padding-left:6px}
.drawer-nav a.is-active{color:var(--primary-2)}
.drawer-nav a svg{width:16px;height:16px;opacity:.6}
.drawer-cta{margin-top:auto;width:100%}

/* ---------- 页头 ---------- */
.page-head{
  position:relative;overflow:hidden;
  padding:56px 0 60px;
  border-bottom:1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(10,14,19,.84), rgba(10,14,19,.96)),
    url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
}
.page-head::after{
  content:"";position:absolute;left:-10%;top:-40%;width:620px;height:620px;pointer-events:none;
  background:radial-gradient(circle, rgba(31,167,201,.20), transparent 62%);
}
.page-head .container{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:20px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--ink-3);opacity:.7}
.breadcrumb a:hover{color:var(--primary-2)}
.page-title{
  font-size:clamp(30px,5vw,54px);line-height:1.15;font-weight:800;letter-spacing:-.01em;
  margin:0 0 18px;max-width:960px;
}
.page-title em{font-style:normal;color:var(--primary-2)}
.page-lead{max-width:760px;font-size:16px;line-height:1.85;color:var(--ink-2);margin:0}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;
  font-size:13px;font-weight:600;color:var(--ink-2);
  background:var(--surface);border:1px solid var(--line);
}
.tag .pulse{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(255,122,47,.16)}
.tag.is-primary{color:var(--primary-2);border-color:var(--line-2);background:rgba(31,167,201,.10)}

/* ---------- 板块 ---------- */
.section{padding:88px 0}
.section-sm{padding:64px 0}
.section-head{max-width:760px;margin-bottom:40px}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.18em;
  color:var(--primary-2);margin-bottom:14px;
}
.sec-title{font-size:clamp(24px,3.4vw,36px);line-height:1.25;font-weight:750;margin:0 0 14px;letter-spacing:-.01em}
.sec-desc{font-size:16px;line-height:1.85;color:var(--ink-2)}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 面板 ---------- */
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);padding:26px;
}
.panel-hover{transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease}
.panel-hover:hover{border-color:var(--line-2);transform:translateY(-2px)}

/* ---------- 规格卡 ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.spec-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 22px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:0 14px 32px rgba(0,0,0,.35);
  transition:border-color .25s ease,transform .25s ease;
}
.spec-card:hover{border-color:var(--line-2);transform:translateY(-2px)}
.spec-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:clamp(27px,3.1vw,34px);font-weight:700;line-height:1.1;color:var(--primary-2);
  letter-spacing:-.01em;
}
.spec-num small{font-size:15px;font-weight:600;color:var(--ink-2);margin-left:4px;letter-spacing:0}
.spec-label{font-size:13px;color:var(--ink-3);margin-top:10px;letter-spacing:.04em}
.spec-text{font-size:14px;line-height:1.7;color:var(--ink-2);margin-top:10px;padding-top:12px;border-top:1px solid var(--line)}

/* ---------- 对照区 ---------- */
.cmp-row{display:grid;grid-template-columns:2fr 1fr;gap:24px;align-items:start}
.cmp-row + .cmp-row{margin-top:32px}
.cmp-title{font-size:18px;font-weight:700;margin:0 0 6px;letter-spacing:.01em}
.cmp-sub{font-size:14px;color:var(--ink-3);margin:0 0 14px}
.diff-list{margin-top:6px}
.diff-item{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}
.diff-item:last-child{border-bottom:0;padding-bottom:2px}
.dot{flex:0 0 auto;width:8px;height:8px;border-radius:50%;background:var(--accent);margin-top:11px;box-shadow:0 0 0 4px rgba(255,122,47,.14)}
.diff-head{margin:0;font-size:16px;font-weight:600;color:var(--ink)}
.diff-text{margin:6px 0 0;font-size:14px;line-height:1.75;color:var(--ink-2)}
.diff-item b{color:var(--accent);font-family:var(--font-num);font-weight:700}

.thumb{border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10;margin-bottom:18px;background:rgba(255,255,255,.03)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.thumb:hover img{transform:scale(1.04)}

.kv-row{display:flex;justify-content:space-between;gap:14px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px;line-height:1.7}
.kv-row:last-child{border-bottom:0}
.kv-key{color:var(--ink-3);flex:0 0 auto}
.kv-val{color:var(--ink);text-align:right}
.kv-val em{font-style:normal;color:var(--accent);font-family:var(--font-num);font-weight:700}

.shift-list{margin-top:6px}
.shift-row{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line)}
.shift-row:last-child{border-bottom:0;padding-bottom:2px}
.shift-num{
  flex:0 0 auto;width:34px;font-family:var(--font-num);font-size:14px;font-weight:700;
  color:var(--accent);letter-spacing:.04em;padding-top:3px;
}
.shift-body{flex:1;min-width:0}
.shift-name{font-size:15.5px;font-weight:600;color:var(--ink);margin:0}
.shift-flow{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:8px;font-size:13.5px;color:var(--ink-2)}
.shift-old{color:var(--ink-3);text-decoration:line-through;text-decoration-color:rgba(255,122,47,.6)}
.shift-arrow{color:var(--ink-3)}
.shift-new{color:var(--primary-2);font-weight:600}

.check-list{margin-top:6px}
.check-item{display:flex;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}
.check-item:last-child{border-bottom:0}
.check-ico{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;display:grid;place-items:center;margin-top:3px;
  background:rgba(31,167,201,.14);border:1px solid var(--line-2);
}
.check-ico svg{width:14px;height:14px;stroke:var(--primary-2);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.check-item p{font-size:14px;line-height:1.7;color:var(--ink-2)}
.check-item p b{color:var(--ink);font-weight:600}

.note-line{font-size:13px;line-height:1.8;color:var(--ink-3);margin-top:22px;max-width:900px}

/* ---------- FAQ ---------- */
.faq-list{max-width:900px}
.faq-item{
  position:relative;border:1px solid var(--line);background:var(--surface);
  border-radius:14px;margin-bottom:10px;overflow:hidden;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:border-color .25s ease,background .25s ease;
}
.faq-item:hover{border-color:rgba(111,227,242,.28)}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,var(--primary),var(--primary-2));
  opacity:0;transition:opacity .25s ease;
}
.faq-item[open]::before{opacity:1}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:18px 56px 18px 22px;font-size:16.5px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-family:var(--font-num);font-size:20px;color:var(--ink-3);transition:color .25s ease;
}
.faq-item[open] summary::after{content:"−";color:var(--primary-2)}
.faq-item summary:focus-visible{outline:2px solid var(--primary-2);outline-offset:-2px}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:790px}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;border-radius:20px;padding:52px 48px;
  border:1px solid var(--line);background:linear-gradient(140deg,rgba(31,167,201,.16),rgba(255,255,255,.03) 46%,rgba(255,122,47,.10));
  box-shadow:var(--shadow-card);
}
.cta-panel::after{
  content:"";position:absolute;right:-120px;bottom:-160px;width:420px;height:420px;pointer-events:none;
  background:radial-gradient(circle, rgba(255,122,47,.20), transparent 64%);
}
.cta-panel h2{position:relative;font-size:clamp(23px,3vw,32px);font-weight:750;margin:0 0 14px;line-height:1.3}
.cta-panel p{position:relative;max-width:720px;font-size:15.5px;line-height:1.85;color:var(--ink-2)}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.cta-note{position:relative;font-size:13px;color:var(--ink-3);margin-top:16px}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:32px;border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(31,167,201,.07),transparent 240px),var(--bg-2);
  padding-top:64px;
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-desc{font-size:14px;line-height:1.8;color:var(--ink-2);max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.1em;color:var(--primary-2);margin:0 0 16px}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col li a,.footer-col li span{font-size:14px;color:var(--ink-2);display:inline-block;transition:color .2s ease,transform .2s ease}
.footer-col li a:hover{color:var(--ink);transform:translateX(-2px)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:48px;padding:20px 0 28px;border-top:1px solid var(--line);
  font-size:13px;color:var(--ink-3);
}
.to-top{display:inline-flex;align-items:center;gap:6px;color:var(--ink-2);transition:color .2s ease}
.to-top:hover{color:var(--primary-2)}
.to-top svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 底部转化条 ---------- */
.bp-bar{
  position:fixed;left:50%;bottom:20px;z-index:70;transform:translate(-50%,14px);
  width:calc(100% - 40px);max-width:720px;height:64px;
  display:flex;align-items:center;gap:14px;padding:0 12px 0 24px;
  border-radius:999px;border:1px solid var(--line);
  background:rgba(16,24,35,.88);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  box-shadow:0 18px 40px rgba(0,0,0,.5);
  opacity:0;visibility:hidden;
  transition:opacity .35s ease,transform .35s ease,visibility .35s ease;
}
.bp-bar.is-visible{opacity:1;visibility:visible;transform:translate(-50%,0)}
.bp-text{flex:1;min-width:0;font-size:14px;color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bp-close{
  flex:0 0 auto;width:36px;height:36px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--ink-3);transition:color .2s ease,border-color .2s ease;
}
.bp-close:hover{color:var(--ink);border-color:var(--primary)}
.bp-close svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .container{padding:0 24px}
  .nav-links{display:none}
  .nav-toggle{display:block}
  .nav-actions{margin-left:auto}
  .section{padding:72px 0}
  .spec-grid{grid-template-columns:repeat(2,1fr)}
  .cmp-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .nav-wrap{height:64px;gap:14px}
  .brand-mark{width:36px;height:36px}
  .brand-text span{letter-spacing:.1em}
  .nav-actions .btn-ghost{display:none}
  .section{padding:56px 0}
  .section-sm{padding:48px 0}
  .page-head{padding:40px 0 44px}
  .spec-grid{grid-template-columns:1fr}
  .cta-panel{padding:34px 24px;border-radius:16px}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .nav-actions .btn-primary{display:none}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .page-title{font-size:29px}
  .bp-bar{
    left:0;right:0;bottom:0;width:100%;max-width:none;height:auto;min-height:64px;
    transform:translateY(20px);border-radius:0;border-left:0;border-right:0;border-bottom:0;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  }
  .bp-bar.is-visible{transform:translateY(0)}
  .bp-text{white-space:normal;font-size:13px;line-height:1.5}
  .bp-bar .btn{width:100%}
}
@media (min-width:1440px){
  .container{padding:0 40px}
}

/* roulang page: category2 */
:root{
  --bg:#0A0E13;
  --bg-2:#101823;
  --surface:rgba(255,255,255,.055);
  --line:rgba(255,255,255,.10);
  --primary:#1FA7C9;
  --primary-2:#6FE3F2;
  --accent:#FF7A2F;
  --ink:#F2F6FA;
  --ink-2:#A9B7C6;
  --ink-3:#7B8896;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:12px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100%;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  padding-bottom:96px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{list-style:none;padding:0}
::selection{background:rgba(31,167,201,.35)}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(760px 520px at 10% 6%, rgba(31,167,201,.16), transparent 62%),
    radial-gradient(680px 520px at 92% 84%, rgba(255,122,47,.10), transparent 60%),
    linear-gradient(180deg,#0A0E13 0%,#0B1118 46%,#0A0E13 100%);
}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media (min-width:1024px){.container{padding:0 32px}}
@media (min-width:1440px){.container{padding:0 48px}}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(10,14,19,.70);
  border-bottom:1px solid transparent;
  transition:background .3s ease,border-color .3s ease,box-shadow .3s ease,backdrop-filter .3s ease;
}
.site-header.is-scrolled{
  background:rgba(10,14,19,.90);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom-color:var(--line);
  box-shadow:0 12px 32px rgba(0,0,0,.38);
}
.nav-wrap{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:12px;
  background:rgba(31,167,201,.14);
  border:1px solid rgba(111,227,242,.28);
  transition:border-color .25s ease,background .25s ease;
}
.brand:hover .brand-mark{border-color:rgba(111,227,242,.6);background:rgba(31,167,201,.22)}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:.02em}
.brand-text span{font-size:12px;color:var(--ink-2);letter-spacing:.10em}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{
  position:relative;
  padding:10px 11px;
  font-size:15px;
  font-weight:600;
  color:var(--ink-2);
  border-radius:10px;
  transition:color .22s ease,background .22s ease;
  white-space:nowrap;
}
.nav-link:hover{color:var(--ink);background:rgba(255,255,255,.05)}
.nav-link:focus-visible{outline:2px solid var(--primary-2);outline-offset:2px}
.nav-link.is-active{color:#fff}
.nav-link.is-active::after{
  content:"";
  position:absolute;
  left:11px;right:11px;bottom:3px;
  height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--primary-2));
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  cursor:pointer;
  transition:border-color .25s ease,background .25s ease;
}
.nav-toggle:hover{border-color:rgba(111,227,242,.5)}
.nav-toggle span{display:block;width:18px;height:2px;margin:0 auto;border-radius:2px;background:var(--ink);position:relative;transition:background .25s ease}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .25s ease;
}
.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{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;font-weight:600;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease,filter .25s ease;
}
.btn:focus-visible{outline:2px solid var(--primary-2);outline-offset:2px}
.btn-primary{
  background:linear-gradient(180deg,#28B8DA,#1589A6);
  color:#04161C;
  box-shadow:0 0 0 1px rgba(111,227,242,.5),0 10px 30px rgba(31,167,201,.35);
}
.btn-primary:hover{
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(111,227,242,.62),0 14px 42px rgba(31,167,201,.5);
}
.btn-primary:active{transform:translateY(1px);box-shadow:0 0 0 1px rgba(111,227,242,.45),0 6px 16px rgba(31,167,201,.28)}
.btn-ghost{
  background:rgba(255,255,255,.03);
  border-color:rgba(255,255,255,.18);
  color:var(--ink);
}
.btn-ghost:hover{border-color:var(--primary);background:rgba(111,227,242,.08);color:#fff}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 16px;font-size:14px}
.btn-lg{height:52px;padding:0 26px;font-size:16px}
.btn-block{width:100%}

/* ============ 移动抽屉 ============ */
.drawer{position:fixed;inset:0;z-index:90;pointer-events:none}
.drawer-mask{
  position:absolute;inset:0;
  background:rgba(6,9,13,.72);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  opacity:0;transition:opacity .3s ease;
}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;
  width:320px;max-width:86vw;
  background:#0C131C;
  border-left:1px solid var(--line);
  transform:translateX(100%);
  transition:transform .34s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;
  padding:18px 18px calc(18px + env(safe-area-inset-bottom));
  overflow-y:auto;
}
.drawer.is-open{pointer-events:auto}
.drawer.is-open .drawer-mask{opacity:1}
.drawer.is-open .drawer-panel{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line)}
.drawer-title{font-size:14px;letter-spacing:.14em;color:var(--ink-3)}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:rgba(255,255,255,.04);cursor:pointer;font-size:20px;line-height:1;color:var(--ink-2);
  transition:border-color .25s ease,color .25s ease;
}
.drawer-close:hover{border-color:var(--primary);color:#fff}
.drawer-list{margin:8px 0 0;flex:1}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 6px;
  font-size:15px;font-weight:600;color:var(--ink-2);
  border-bottom:1px solid rgba(255,255,255,.06);
  transition:color .22s ease,padding-left .22s ease;
}
.drawer-list a::after{content:"›";font-size:18px;color:var(--ink-3)}
.drawer-list a:hover,.drawer-list a.is-active{color:var(--primary-2)}
.drawer-list a:hover{padding-left:12px}
.drawer-foot{padding-top:16px}

/* ============ 页头 ============ */
.page-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center;
  opacity:.55;
}
.page-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(520px 340px at 12% 18%, rgba(31,167,201,.24), transparent 66%),
    linear-gradient(100deg,rgba(10,14,19,.96) 0%,rgba(10,14,19,.86) 46%,rgba(10,14,19,.58) 100%);
}
.page-hero-inner{position:relative;z-index:2;padding:48px 0 56px}
@media (min-width:1024px){.page-hero-inner{padding:68px 0 84px}}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:var(--ink-3);margin-bottom:18px}
.crumbs a{color:var(--ink-2);transition:color .22s ease}
.crumbs a:hover{color:var(--primary-2)}
.crumbs li+li::before{content:"/";margin-right:6px;color:rgba(255,255,255,.22)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.14em;
  color:var(--primary-2);margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--primary-2)}
.h1{
  font-size:clamp(28px,4.6vw,48px);
  line-height:1.18;
  font-weight:800;
  letter-spacing:-.01em;
  max-width:920px;
  margin-bottom:18px;
}
.lead{
  max-width:760px;
  font-size:17px;
  line-height:1.85;
  color:var(--ink-2);
  margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px}
.stat-row{display:flex;flex-wrap:wrap;gap:0}
.stat-item{padding:0 26px;border-left:1px solid var(--line)}
.stat-item:first-child{padding-left:0;border-left:0}
.stat-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(24px,3vw,32px);
  font-weight:700;
  color:var(--primary-2);
  line-height:1.2;
}
.stat-label{font-size:13px;color:var(--ink-3)}

/* ============ 板块 ============ */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:72px 0}}
@media (min-width:1024px){.section{padding:96px 0}}
.section-alt{
  background:linear-gradient(180deg,rgba(255,255,255,.022),transparent 70%);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section-head{max-width:780px;margin-bottom:38px}
.sec-title{font-size:clamp(23px,3.2vw,34px);line-height:1.28;font-weight:750;margin-bottom:14px}
.sec-desc{font-size:16px;color:var(--ink-2)}
.grid{display:grid;gap:24px}
@media (max-width:639px){.grid{gap:16px}}
.g-2{grid-template-columns:1fr}
@media (min-width:768px){.g-2{grid-template-columns:repeat(2,1fr)}}
.g-12{grid-template-columns:1fr}

.card{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
  transition:border-color .25s ease,transform .25s ease;
}
.card:hover{border-color:rgba(111,227,242,.35);transform:translateY(-2px)}
.card-pad{padding:24px}
.media{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-img);
  border:1px solid var(--line);
  background:linear-gradient(140deg,rgba(31,167,201,.14),rgba(255,122,47,.08));
}
.media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.media:hover img{transform:scale(1.04)}
.ratio-16x10{aspect-ratio:16/10}
.ratio-16x9{aspect-ratio:16/9}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  font-size:13px;font-weight:600;
  background:rgba(31,167,201,.14);
  border:1px solid rgba(111,227,242,.30);
  color:var(--primary-2);
}
.badge-num{
  display:inline-flex;align-items:center;
  padding:5px 13px;border-radius:999px;
  font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:.08em;
  background:rgba(255,122,47,.14);
  border:1px solid rgba(255,122,47,.34);
  color:#FFB486;
}
.icon-badge{
  width:52px;height:52px;flex:none;
  display:grid;place-items:center;
  border-radius:14px;
  background:rgba(31,167,201,.12);
  border:1px solid rgba(111,227,242,.22);
  color:var(--primary-2);
}
.icon-badge svg{width:28px;height:28px;stroke-width:1.75}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--primary-2);
  transition:gap .22s ease,color .22s ease;
}
.text-link:hover{gap:10px;color:#fff}

/* ============ 流程时间轴 ============ */
.timeline{position:relative;padding-left:44px}
.timeline::before{
  content:"";position:absolute;left:19px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,rgba(111,227,242,.9),rgba(31,167,201,.36) 56%,rgba(255,122,47,.5));
}
.tl-item{position:relative;padding-bottom:30px}
.tl-item:last-child{padding-bottom:0}
.tl-node{
  position:absolute;left:-44px;top:0;
  width:40px;height:40px;border-radius:50%;
  display:grid;place-items:center;
  font-family:var(--font-mono);font-size:14px;font-weight:700;
  color:var(--primary-2);
  background:rgba(31,167,201,.18);
  border:1px solid rgba(111,227,242,.45);
  box-shadow:0 0 0 6px rgba(31,167,201,.07);
}
.tl-item:first-child .tl-node{background:rgba(31,167,201,.30);box-shadow:0 0 0 8px rgba(31,167,201,.12),0 0 22px rgba(31,167,201,.35)}
.tl-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px 24px;
  transition:border-color .25s ease,transform .25s ease;
}
.tl-card:hover{border-color:rgba(111,227,242,.32);transform:translateY(-2px)}
.tl-title{font-size:19px;font-weight:700;margin-bottom:8px}
.tl-text{font-size:15px;line-height:1.8;color:var(--ink-2)}
.tl-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tl-tag{
  font-size:13px;padding:3px 11px;border-radius:999px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  color:var(--ink-3);
}
@media (max-width:639px){
  .timeline{padding-left:36px}
  .timeline::before{left:15px;width:1px}
  .tl-node{left:-36px;width:32px;height:32px;font-size:12px;box-shadow:0 0 0 4px rgba(31,167,201,.07)}
  .tl-card{padding:18px}
  .tl-title{font-size:17px}
  .tl-text{font-size:14px}
}

/* ============ 功能矩阵 ============ */
@media (min-width:1024px){
  .g-12{grid-template-columns:repeat(12,1fr);gap:24px}
  .matrix-main{grid-column:span 7}
  .matrix-side{grid-column:span 5}
  .matrix-wide{grid-column:span 12}
}
.matrix-list{margin-top:18px;display:grid;gap:12px}
.matrix-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2);line-height:1.75}
.matrix-list li::before{
  content:"";flex:none;width:6px;height:6px;margin-top:9px;border-radius:50%;
  background:var(--primary-2);
}
.matrix-data{
  margin-top:22px;padding-top:16px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:26px;
}
.matrix-data div strong{
  display:block;font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:26px;font-weight:700;color:var(--primary-2);line-height:1.2;
}
.matrix-data div span{font-size:13px;color:var(--ink-3)}
.matrix-wide-inner{display:flex;flex-wrap:wrap;align-items:center;gap:20px;padding:24px}
.matrix-wide-copy{flex:1 1 320px;min-width:240px}
.matrix-wide-copy h3{font-size:19px;font-weight:700;margin-bottom:6px}
.matrix-wide-copy p{font-size:15px;color:var(--ink-2)}

/* ============ 场景配对 ============ */
.split{display:grid;gap:24px;align-items:center;padding:26px 0}
@media (min-width:1024px){
  .split{grid-template-columns:1fr 1fr;gap:52px}
  .split.reverse .split-media{order:2}
  .split.reverse .split-body{order:1}
}
.split-body h3{font-size:clamp(20px,2.6vw,24px);font-weight:700;margin:16px 0 12px;line-height:1.35}
.split-body p{font-size:16px;color:var(--ink-2);margin-bottom:14px}
.split-note{
  display:flex;gap:10px;padding:14px 16px;border-radius:12px;
  background:rgba(31,167,201,.08);
  border:1px solid rgba(111,227,242,.20);
  font-size:14.5px;color:var(--ink-2);line-height:1.7;
}
.split-note::before{content:"";flex:none;width:3px;border-radius:3px;background:var(--primary-2)}

/* ============ 数字条 ============ */
.num-grid{display:grid;gap:16px;grid-template-columns:repeat(2,1fr)}
@media (min-width:768px){.num-grid{grid-template-columns:repeat(4,1fr);gap:22px}}
.num-card{padding:22px;border-radius:var(--radius-card);background:var(--surface);border:1px solid var(--line);transition:border-color .25s ease,transform .25s ease}
.num-card:hover{border-color:rgba(111,227,242,.32);transform:translateY(-2px)}
.num-value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:clamp(24px,3.4vw,34px);font-weight:700;color:var(--primary-2);line-height:1.2}
.num-value small{font-size:14px;color:var(--ink-3);margin-left:4px}
.num-label{font-size:13.5px;color:var(--ink-3);margin-top:6px}
.num-desc{font-size:14px;color:var(--ink-2);margin-top:10px}

/* ============ FAQ ============ */
.faq-list{max-width:900px}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:10px;
  overflow:hidden;
  transition:border-color .25s ease,background .25s ease;
}
.faq-item:hover{border-color:rgba(255,255,255,.2)}
.faq-item[open]{border-color:rgba(111,227,242,.34);background:rgba(255,255,255,.07)}
.faq-item summary{
  position:relative;
  list-style:none;
  cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px 18px 20px;
  font-size:16px;font-weight:600;
  transition:color .22s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--primary-2)}
.faq-item summary:focus-visible{outline:2px solid var(--primary-2);outline-offset:-2px}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;
  border-radius:0 4px 4px 0;background:var(--primary);
  opacity:0;transition:opacity .25s ease;
}
.faq-item[open] summary::before{opacity:1}
.faq-plus{position:relative;flex:none;width:18px;height:18px}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;background:var(--primary-2);border-radius:2px;
  transition:transform .28s ease,opacity .28s ease;
}
.faq-plus::before{left:0;right:0;top:8px;height:2px}
.faq-plus::after{top:0;bottom:0;left:8px;width:2px}
.faq-item[open] .faq-plus::after{transform:rotate(90deg);opacity:0}
.faq-body{padding:0 22px 20px 20px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ============ CTA ============ */
.cta-panel{
  position:relative;
  overflow:hidden;
  border-radius:20px;
  border:1px solid rgba(111,227,242,.24);
  background:linear-gradient(115deg,rgba(31,167,201,.18),rgba(16,24,35,.92) 52%,rgba(255,122,47,.14));
  padding:34px 24px;
  display:grid;gap:26px;align-items:center;
}
@media (min-width:1024px){
  .cta-panel{grid-template-columns:1.35fr 1fr;padding:48px 44px;gap:40px}
}
.cta-panel h2{font-size:clamp(22px,3vw,30px);font-weight:750;line-height:1.3;margin-bottom:12px}
.cta-panel p{font-size:15.5px;color:var(--ink-2)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
@media (min-width:1024px){.cta-actions{justify-content:flex-end}}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:24px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(31,167,201,.07),transparent 42%);
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px;padding:52px 0 36px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:36px}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:72px 0 48px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-desc{font-size:14px;line-height:1.8;color:var(--ink-2);max-width:380px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--primary-2);letter-spacing:.06em;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a,.footer-col ul span{font-size:14px;color:var(--ink-2);transition:color .22s ease,transform .22s ease;display:inline-block}
.footer-col ul a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  padding:20px 0 26px;border-top:1px solid var(--line);
}
.footer-bottom p{font-size:13px;color:var(--ink-3)}
.to-top{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13.5px;font-weight:600;color:var(--ink-2);
  padding:8px 14px;border-radius:999px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  transition:color .22s ease,border-color .22s ease,transform .22s ease;
}
.to-top svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.to-top:hover{color:#fff;border-color:var(--primary);transform:translateY(-2px)}

/* ============ 底部转化条 ============ */
.sticky-bar{
  position:fixed;
  left:50%;bottom:20px;
  transform:translateX(-50%) translateY(22px);
  z-index:70;
  width:min(720px,calc(100% - 40px));
  min-height:64px;
  display:flex;align-items:center;gap:16px;
  padding:10px 12px 10px 22px;
  border-radius:999px;
  background:rgba(13,20,29,.94);
  border:1px solid var(--line);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  box-shadow:0 18px 40px rgba(0,0,0,.5);
  opacity:0;visibility:hidden;
  transition:opacity .35s ease,transform .35s ease,visibility .35s ease;
}
.sticky-bar.is-visible{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.sticky-text{font-size:14.5px;color:var(--ink-2);flex:1 1 auto;min-width:0}
.sticky-actions{display:flex;align-items:center;gap:8px;flex:none}
.sticky-close{
  width:36px;height:36px;flex:none;
  border-radius:50%;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  color:var(--ink-2);
  font-size:16px;line-height:1;cursor:pointer;
  transition:border-color .22s ease,color .22s ease;
}
.sticky-close:hover{border-color:var(--primary);color:#fff}
@media (max-width:639px){
  .sticky-bar{
    left:0;right:0;bottom:0;width:100%;
    transform:translateY(22px);
    border-radius:0;
    padding:12px 16px calc(12px + env(safe-area-inset-bottom));
    flex-direction:column;align-items:stretch;gap:10px;
  }
  .sticky-bar.is-visible{transform:translateY(0)}
  .sticky-text{display:none}
  .sticky-actions{width:100%}
  .sticky-actions .btn{flex:1}
}

@media (max-width:1023px){
  .nav-links{display:none}
  .nav-actions .btn{display:none}
  .nav-toggle{display:grid;place-items:center}
}
@media (max-width:520px){
  .nav-wrap{height:64px;gap:12px}
  .brand-text strong{font-size:15px}
  .brand-text span{font-size:11px}
  .stat-item{padding:0 14px;border-left:0}
  .stat-item:first-child{padding-left:0}
  .stat-row{gap:18px 0}
  .hero-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category4 */
:root{
  --bg:#0A0E13; --bg-2:#101823;
  --surface:rgba(255,255,255,.055); --surface-2:rgba(255,255,255,.035);
  --line:rgba(255,255,255,.10); --line-strong:rgba(111,227,242,.35);
  --primary:#1FA7C9; --primary-2:#6FE3F2; --accent:#FF7A2F;
  --ink:#F2F6FA; --ink-2:#A9B7C6; --ink-3:#7B8896;
  --radius-card:16px; --radius-img:14px; --radius-btn:12px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0 0 96px;background:var(--bg);color:var(--ink);
  font-family:var(--font-cn);font-size:16px;line-height:1.85;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(720px 520px at 6% -6%,rgba(31,167,201,.20),transparent 62%),
    radial-gradient(640px 480px at 100% 108%,rgba(255,122,47,.13),transparent 60%),
    linear-gradient(180deg,#0A0E13 0%,#0C131B 52%,#0A0E13 100%);
}
body::after{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.16;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240' viewBox='0 0 240 240'><path d='M0 168 L52 132 L104 168 L156 128 L208 164 L240 142' fill='none' stroke='%236FE3F2' stroke-width='1'/><path d='M0 96 L60 62 L112 98 L170 58 L240 92' fill='none' stroke='%23FF7A2F' stroke-width='1'/></svg>");
  background-size:420px 420px;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--primary-2);outline-offset:2px;border-radius:6px}

.page-shell{position:relative;z-index:1}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media(min-width:768px){.container{padding:0 32px}}
@media(min-width:1440px){.container{max-width:1240px}}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;height:72px;display:flex;align-items:center;
  background:rgba(10,14,19,.62);border-bottom:1px solid transparent;
  transition:background .28s ease,border-color .28s ease,backdrop-filter .28s ease;
}
.site-header.is-scrolled{
  background:rgba(10,14,19,.82);backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);border-bottom-color:var(--line);
}
.nav-wrap{display:flex;align-items:center;gap:22px;width:100%}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.brand-mark{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(31,167,201,.28),rgba(255,122,47,.14));
  border:1px solid rgba(111,227,242,.28);
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.16}
.brand-text strong{font-size:15.5px;letter-spacing:.4px;font-weight:750}
.brand-text span{font-size:11.5px;color:var(--ink-3);letter-spacing:1.4px}
.nav-links{display:none;align-items:center;gap:4px;margin-left:auto}
@media(min-width:1024px){.nav-links{display:flex}}
.nav-link{
  position:relative;padding:9px 12px;border-radius:9px;font-size:15px;font-weight:600;
  color:var(--ink-2);transition:color .2s ease,background .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary-2),var(--primary));transform:scaleX(0);
  transition:transform .24s ease;
}
.nav-link:hover{color:var(--ink);background:rgba(255,255,255,.045)}
.nav-link.is-active{color:var(--ink)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
@media(min-width:1024px){.nav-actions{margin-left:0}}
.nav-actions .btn-ghost{display:none}
@media(min-width:1200px){.nav-actions .btn-ghost{display:inline-flex}}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface);display:grid;place-items:center;gap:5px;
}
@media(min-width:1024px){.nav-toggle{display:none}}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);
  box-shadow:0 6px 0 var(--ink-2),0 -6px 0 var(--ink-2);transition:.25s}
.nav-toggle[aria-expanded="true"] span{transform:rotate(45deg);box-shadow:none}
.nav-toggle[aria-expanded="true"] span::after{content:"";display:block;position:absolute;width:18px;height:2px;background:var(--ink);transform:rotate(-90deg)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--radius-btn);font-size:15.5px;font-weight:650;
  border:1px solid transparent;transition:transform .2s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  white-space:nowrap;
}
.btn-sm{height:44px;padding:0 18px;font-size:15px}
.btn-primary{
  background:linear-gradient(180deg,#33B6D6,#1FA7C9);color:#04181F;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.45),0 0 0 1px rgba(111,227,242,.5),0 10px 30px rgba(31,167,201,.35);
  font-weight:700;
}
.btn-primary:hover{transform:translateY(-1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 0 0 1px rgba(111,227,242,.6),0 12px 42px rgba(31,167,201,.5);filter:brightness(1.08)}
.btn-primary:active{transform:translateY(1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 0 0 1px rgba(111,227,242,.45),0 4px 14px rgba(31,167,201,.3)}
.btn-ghost{border-color:rgba(255,255,255,.18);color:var(--ink);background:rgba(255,255,255,.03)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary-2);background:rgba(31,167,201,.10);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}

/* ---------- 抽屉 ---------- */
.drawer-overlay{
  position:fixed;inset:0;z-index:70;background:rgba(6,9,13,.72);
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:.3s ease;
}
.drawer-overlay.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:88vw;z-index:80;
  background:linear-gradient(180deg,#0E1620,#0A0E13);border-left:1px solid var(--line);
  transform:translateX(102%);transition:transform .32s cubic-bezier(.3,.8,.3,1);
  display:flex;flex-direction:column;padding:22px 20px 26px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-title{font-size:14px;letter-spacing:2px;color:var(--ink-3)}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--line);display:grid;place-items:center;color:var(--ink-2)}
.drawer-close:hover{color:var(--primary-2);border-color:var(--line-strong)}
.drawer-list{display:flex;flex-direction:column;gap:2px;flex:1}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;height:52px;padding:0 12px;
  border-radius:12px;color:var(--ink-2);font-size:15.5px;font-weight:600;
  border-bottom:1px solid rgba(255,255,255,.05);transition:.2s ease;
}
.drawer-list a:hover{background:rgba(255,255,255,.05);color:var(--ink);padding-left:16px}
.drawer-list a.is-active{color:var(--primary-2)}
.drawer-foot{margin-top:18px}
.drawer-foot .btn{width:100%}

/* ---------- 页头 ---------- */
.page-hero{position:relative;padding:64px 0 56px;overflow:hidden}
@media(min-width:768px){.page-hero{padding:84px 0 72px}}
.page-hero-bg{
  position:absolute;inset:0;z-index:-1;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
}
.page-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(620px 340px at 4% 0%,rgba(31,167,201,.28),transparent 66%),
    linear-gradient(180deg,rgba(10,14,19,.90),rgba(10,14,19,.95) 62%,var(--bg));
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:20px}
.crumb a{color:var(--ink-2);transition:color .2s}
.crumb a:hover{color:var(--primary-2)}
.crumb .sep{color:rgba(255,255,255,.22)}
.crumb [aria-current]{color:var(--primary-2)}
.tag-pill{
  display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 13px;border-radius:999px;
  font-size:13px;font-weight:600;color:var(--primary-2);
  background:rgba(31,167,201,.13);border:1px solid rgba(111,227,242,.28);
}
.tag-pill i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block}
.page-hero h1{
  margin:18px 0 16px;font-size:clamp(30px,5vw,46px);line-height:1.18;font-weight:780;letter-spacing:.4px;
  max-width:20em;
}
.page-hero .lede{max-width:760px;color:var(--ink-2);font-size:16px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:26px}
.hero-meta div{display:flex;flex-direction:column;gap:2px}
.hero-meta b{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:26px;color:var(--primary-2);line-height:1.15}
.hero-meta span{font-size:13px;color:var(--ink-3)}

/* ---------- 正文布局 ---------- */
.section{padding:72px 0}
@media(min-width:768px){.section{padding:92px 0}}
.section-tight{padding:56px 0}
.section-head{max-width:760px;margin-bottom:34px}
.section-head h2{font-size:clamp(24px,3.4vw,32px);line-height:1.28;font-weight:760}
.section-head p{margin-top:12px;color:var(--ink-2)}

.doc-layout{display:grid;grid-template-columns:1fr;gap:28px}
@media(min-width:1024px){
  .doc-layout{grid-template-columns:240px minmax(0,760px);gap:56px;justify-content:center}
}
.toc-desktop{display:none}
@media(min-width:1024px){
  .toc-desktop{display:block}
  .toc-sticky{position:sticky;top:104px}
}
.toc-panel{
  border:1px solid var(--line);background:var(--surface);border-radius:var(--radius-card);
  padding:18px 16px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.toc-panel h2{font-size:14px;letter-spacing:2px;color:var(--primary-2);font-weight:700;margin-bottom:12px}
.toc-list{display:flex;flex-direction:column;gap:2px}
.toc-list a{
  position:relative;display:block;padding:9px 10px 9px 14px;font-size:14.5px;color:var(--ink-2);
  border-radius:10px;transition:.2s ease;
}
.toc-list a::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary-2),var(--primary));opacity:0;transition:opacity .2s;
}
.toc-list a:hover{color:var(--ink);background:rgba(255,255,255,.045)}
.toc-list a.is-current{color:var(--primary-2);background:rgba(31,167,201,.10)}
.toc-list a.is-current::before{opacity:1}
.toc-note{margin-top:14px;font-size:13px;color:var(--ink-3);line-height:1.7}

.toc-mobile{border:1px solid var(--line);background:var(--surface);border-radius:var(--radius-card);margin-bottom:8px}
.toc-mobile summary{
  list-style:none;cursor:pointer;padding:15px 16px;font-size:15px;font-weight:650;display:flex;
  align-items:center;justify-content:space-between;color:var(--ink);
}
.toc-mobile summary::-webkit-details-marker{display:none}
.toc-mobile summary::after{content:"＋";color:var(--primary-2);font-size:16px}
.toc-mobile[open] summary::after{content:"－"}
.toc-mobile .toc-list{padding:0 10px 14px}
@media(min-width:1024px){.toc-mobile{display:none}}

.doc-body{max-width:760px}
.doc-body section{margin-bottom:56px;scroll-margin-top:104px}
.doc-body section:last-of-type{margin-bottom:36px}
.doc-body h2{
  position:relative;padding-left:18px;font-size:clamp(21px,2.6vw,26px);line-height:1.35;font-weight:750;
  margin-bottom:18px;
}
.doc-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary-2),var(--primary));
}
.doc-body h3{font-size:18px;font-weight:700;margin:26px 0 10px}
.doc-body p{color:var(--ink-2);margin-bottom:16px}
.doc-body strong{color:var(--ink);font-weight:700}
.doc-body ul{display:flex;flex-direction:column;gap:10px;margin:6px 0 20px}
.doc-body ul li{position:relative;padding-left:20px;color:var(--ink-2)}
.doc-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:50%;
  background:var(--primary);box-shadow:0 0 0 3px rgba(31,167,201,.16);
}
.doc-figure{margin:22px 0}
.doc-figure img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img);
  border:1px solid var(--line);
}
.doc-figure figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px}
.quote-block{
  border-left:4px solid var(--primary);background:rgba(31,167,201,.07);
  border-radius:0 12px 12px 0;padding:16px 20px;margin:20px 0;color:var(--ink-2);
}
.note-line{
  display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink-3);
  border-top:1px solid var(--line);padding-top:16px;margin-top:22px;
}
.note-line svg{width:16px;height:16px;flex:0 0 auto;margin-top:4px;stroke:var(--ink-3)}

.record-list{display:flex;flex-direction:column;gap:12px;margin:8px 0 20px}
.record-item{
  display:grid;grid-template-columns:88px minmax(0,1fr);gap:16px;align-items:start;
  border:1px solid var(--line);background:var(--surface-2);border-radius:14px;padding:16px;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transition:border-color .22s,transform .22s;
}
.record-item:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.record-tag{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;font-weight:600;
  color:var(--accent);background:rgba(255,122,47,.12);border:1px solid rgba(255,122,47,.28);
  border-radius:999px;height:28px;display:inline-flex;align-items:center;justify-content:center;
}
.record-item h4{font-size:15.5px;font-weight:700;margin-bottom:6px}
.record-item p{font-size:14px;line-height:1.7;color:var(--ink-2);margin:0}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  border:1px solid var(--line);background:var(--surface);border-radius:14px;
  margin-bottom:10px;overflow:hidden;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:border-color .22s ease;
}
.faq-item:hover{border-color:var(--line-strong)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:17px 18px;font-size:16.5px;font-weight:650;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .fx{
  flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .25s ease;
}
.faq-item summary .fx::before,
.faq-item summary .fx::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--primary-2);border-radius:2px;transform:translate(-50%,-50%);
}
.faq-item summary .fx::before{width:14px;height:2px}
.faq-item summary .fx::after{width:2px;height:14px}
.faq-item[open] summary .fx::after{opacity:0}
.faq-item[open] summary .fx{transform:rotate(180deg)}
.faq-item[open]{border-left:4px solid var(--primary)}
.faq-answer{padding:0 18px 18px 18px;font-size:15px;line-height:1.8;color:var(--ink-2)}

/* ---------- 推荐 ---------- */
.rec-list{border-top:1px solid var(--line);max-width:860px;margin:0 auto}
.rec-item{
  display:flex;align-items:center;justify-content:space-between;gap:16px;height:56px;
  border-bottom:1px solid var(--line);color:var(--ink-2);font-size:15.5px;transition:.22s ease;
}
.rec-item:hover{color:var(--primary-2);padding-left:8px}
.rec-item svg{width:18px;height:18px;stroke:currentColor;flex:0 0 auto}

/* ---------- CTA ---------- */
.cta-band{
  border:1px solid var(--line);background:
    radial-gradient(520px 260px at 12% 0%,rgba(31,167,201,.22),transparent 66%),
    radial-gradient(420px 240px at 96% 100%,rgba(255,122,47,.14),transparent 62%),
    var(--surface);
  border-radius:22px;padding:40px 26px;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:var(--shadow-card);
}
@media(min-width:768px){.cta-band{padding:52px 46px}}
.cta-band h2{font-size:clamp(23px,3.2vw,30px);font-weight:760;line-height:1.3;margin-bottom:12px}
.cta-band p{color:var(--ink-2);max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.cta-actions .btn{min-width:170px}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;margin-top:40px;border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(16,24,35,.85),rgba(10,14,19,.96));
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:12%;right:12%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(111,227,242,.55),transparent);
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding:56px 0 36px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:14px}
.footer-desc{font-size:14px;color:var(--ink-2);line-height:1.8;max-width:340px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--primary-2);letter-spacing:1.4px;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,.footer-col span{font-size:14px;color:var(--ink-2);transition:.2s ease;display:inline-block}
.footer-col a:hover{color:var(--ink);transform:translateX(-2px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  border-top:1px solid var(--line);padding:20px 0 26px;
}
.footer-bottom p{font-size:13px;color:var(--ink-3)}
.to-top{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-2);transition:.2s}
.to-top svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.to-top:hover{color:var(--primary-2)}

/* ---------- 底部固定转化条 ---------- */
.fixed-cta{
  position:fixed;left:16px;right:16px;bottom:calc(16px + env(safe-area-inset-bottom));
  z-index:65;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 12px 10px 18px;border-radius:999px;
  background:rgba(16,24,35,.92);border:1px solid var(--line);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:0 18px 40px rgba(0,0,0,.5);
  opacity:0;visibility:hidden;transform:translateY(14px);transition:.35s ease;
}
.fixed-cta.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.fixed-cta-text{font-size:13.5px;color:var(--ink-2);margin:0;line-height:1.4}
.fixed-cta-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.fixed-cta-close{
  width:34px;height:34px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;
  color:var(--ink-3);transition:.2s;
}
.fixed-cta-close:hover{color:var(--primary-2);border-color:var(--line-strong)}
.fixed-cta-close svg{width:14px;height:14px;stroke:currentColor;stroke-width:2;fill:none;stroke-linecap:round}
@media(min-width:768px){
  .fixed-cta{left:50%;right:auto;transform:translate(-50%,14px);width:100%;max-width:720px;height:64px;padding:0 12px 0 24px}
  .fixed-cta.is-show{transform:translate(-50%,0)}
}
@media(max-width:767px){
  .fixed-cta{border-radius:18px;flex-direction:column;align-items:stretch;padding:12px}
  .fixed-cta-actions .btn{flex:1}
  .fixed-cta-text{text-align:left}
}

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

/* roulang page: category5 */
:root{
    --bg:#0A0E13;
    --bg-2:#101823;
    --surface:rgba(255,255,255,0.055);
    --surface-2:rgba(255,255,255,0.085);
    --line:rgba(255,255,255,0.10);
    --line-strong:rgba(111,227,242,0.35);
    --primary:#1FA7C9;
    --primary-2:#6FE3F2;
    --accent:#FF7A2F;
    --ink:#F2F6FA;
    --ink-2:#A9B7C6;
    --ink-3:#7B8896;
    --r-card:16px;
    --r-img:14px;
    --r-btn:12px;
    --shadow-card:0 18px 40px rgba(0,0,0,.45);
    --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    --font-num:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.85;
    padding-bottom:96px;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    background:
      radial-gradient(720px 520px at 8% 6%, rgba(31,167,201,.16), transparent 62%),
      radial-gradient(680px 520px at 96% 82%, rgba(255,122,47,.10), transparent 64%);
  }
  body::after{
    content:"";
    position:fixed;
    inset:0;
    pointer-events:none;
    z-index:0;
    opacity:.35;
    background-image:linear-gradient(115deg, rgba(255,255,255,.035) 1px, transparent 1px),
                     linear-gradient(65deg, rgba(255,255,255,.025) 1px, transparent 1px);
    background-size:180px 180px, 240px 240px;
  }
  main,header,footer{position:relative;z-index:1}

  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font-family:inherit}
  h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:750;letter-spacing:.2px}
  p{margin:0}
  ul,ol{margin:0;padding:0;list-style:none}

  .container{
    width:100%;
    max-width:1240px;
    margin:0 auto;
    padding:0 20px;
  }
  @media (min-width:768px){
    .container{padding:0 32px}
  }
  @media (min-width:1440px){
    .container{max-width:1240px}
  }

  .num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    height:46px;
    padding:0 22px;
    font-size:15px;
    font-weight:600;
    line-height:1;
    border-radius:var(--r-btn);
    border:1px solid transparent;
    cursor:pointer;
    transition:box-shadow .22s ease, background .22s ease, border-color .22s ease, color .22s ease, transform .12s ease, filter .22s ease;
    white-space:nowrap;
  }
  .btn-sm{height:44px;padding:0 18px;font-size:14.5px}
  .btn-primary{
    background:linear-gradient(180deg,#2BB6D8,#1A8FAB);
    color:#04161C;
    box-shadow:0 0 0 1px rgba(111,227,242,.5), 0 10px 30px rgba(31,167,201,.35);
    text-shadow:0 1px 0 rgba(255,255,255,.18);
  }
  .btn-primary:hover{
    filter:brightness(1.08);
    box-shadow:0 0 0 1px rgba(111,227,242,.72), 0 10px 42px rgba(31,167,201,.5);
  }
  .btn-primary:active{
    transform:translateY(1px);
    box-shadow:0 0 0 1px rgba(111,227,242,.45), 0 6px 16px rgba(31,167,201,.3);
  }
  .btn-ghost{
    background:transparent;
    border-color:var(--line);
    color:var(--ink);
  }
  .btn-ghost:hover{
    border-color:var(--primary);
    color:var(--primary-2);
    background:rgba(31,167,201,.06);
  }
  .btn-ghost:active{transform:translateY(1px)}
  a:focus-visible,button:focus-visible,summary:focus-visible{
    outline:2px solid var(--primary-2);
    outline-offset:2px;
    border-radius:10px;
  }

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(10,14,19,.72);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid transparent;
    transition:background .25s ease, border-color .25s ease;
  }
  .site-header.is-scrolled{
    background:rgba(10,14,19,.9);
    border-bottom-color:var(--line);
  }
  .nav-wrap{
    display:flex;
    align-items:center;
    gap:20px;
    height:72px;
  }
  .brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
  .brand-mark{
    width:38px;height:38px;
    border-radius:12px;
    display:grid;place-items:center;
    background:rgba(31,167,201,.14);
    border:1px solid rgba(111,227,242,.28);
    flex-shrink:0;
  }
  .brand-mark svg{width:22px;height:22px}
  .brand-text{display:flex;flex-direction:column;line-height:1.15}
  .brand-text strong{font-size:15px;font-weight:750;color:var(--ink);letter-spacing:.4px}
  .brand-text span{font-size:12px;color:var(--ink-2);letter-spacing:.4px}

  .nav-links{display:flex;align-items:center;gap:2px;margin-left:auto}
  .nav-link{
    position:relative;
    padding:10px 12px;
    font-size:15px;
    font-weight:600;
    color:var(--ink-2);
    border-radius:10px;
    transition:color .2s ease, background .2s ease;
  }
  .nav-link:hover{color:var(--ink);background:rgba(255,255,255,.05)}
  .nav-link.is-active{color:var(--ink)}
  .nav-link.is-active::after{
    content:"";
    position:absolute;
    left:12px;right:12px;bottom:2px;
    height:2px;
    border-radius:2px;
    background:linear-gradient(90deg,var(--primary),var(--primary-2));
  }
  .nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}

  .nav-toggle{
    display:none;
    width:44px;height:44px;
    border-radius:12px;
    border:1px solid var(--line);
    background:rgba(255,255,255,.04);
    cursor:pointer;
    position:relative;
    align-items:center;
    justify-content:center;
  }
  .nav-toggle span,
  .nav-toggle span::before,
  .nav-toggle span::after{
    display:block;
    width:18px;height:2px;
    border-radius:2px;
    background:var(--ink);
    transition:transform .25s ease, opacity .2s ease;
  }
  .nav-toggle span{position:relative}
  .nav-toggle span::before,
  .nav-toggle span::after{content:"";position:absolute;left:0}
  .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{transform:translateY(6px) rotate(45deg)}
  .nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

  /* 抽屉 */
  .drawer{
    position:fixed;
    top:0;right:0;
    width:320px;
    max-width:88vw;
    height:100%;
    z-index:90;
    background:#0D141C;
    border-left:1px solid var(--line);
    transform:translateX(102%);
    transition:transform .3s cubic-bezier(.22,.7,.3,1);
    display:flex;
    flex-direction:column;
    padding:20px;
    overflow-y:auto;
  }
  .drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
  .drawer-close{
    width:40px;height:40px;border-radius:12px;
    border:1px solid var(--line);
    background:rgba(255,255,255,.04);
    color:var(--ink-2);
    cursor:pointer;
    font-size:18px;
    line-height:1;
  }
  .drawer-close:hover{color:var(--ink);border-color:var(--primary)}
  .drawer-list{display:flex;flex-direction:column;gap:6px;margin-bottom:20px}
  .drawer-list a{
    display:flex;
    align-items:center;
    justify-content:space-between;
    min-height:52px;
    padding:0 14px;
    border-radius:12px;
    font-size:15.5px;
    font-weight:600;
    color:var(--ink-2);
    border:1px solid transparent;
    transition:.2s ease;
  }
  .drawer-list a::after{
    content:"";
    width:8px;height:8px;
    border-right:1.6px solid currentColor;
    border-top:1.6px solid currentColor;
    transform:rotate(45deg);
    opacity:.6;
  }
  .drawer-list a:hover,
  .drawer-list a.is-active{
    color:var(--ink);
    background:rgba(31,167,201,.1);
    border-color:rgba(111,227,242,.24);
  }
  .drawer-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
  .drawer-foot .btn{width:100%}
  .drawer-mask{
    position:fixed;
    inset:0;
    z-index:80;
    background:rgba(6,9,13,.72);
    backdrop-filter:blur(3px);
    opacity:0;
    visibility:hidden;
    transition:opacity .25s ease, visibility .25s ease;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}

  @media (max-width:1099px){
    .nav-links{display:none}
    .nav-toggle{display:flex}
    .nav-actions .btn-ghost{display:none}
  }
  @media (max-width:640px){
    .nav-wrap{height:64px}
    .nav-actions .btn-primary{display:none}
    .brand-text strong{font-size:14px}
    .brand-text span{font-size:11px}
  }

  /* ---------- 通用板块 ---------- */
  .section{padding:clamp(52px,7vw,104px) 0}
  .section-tight{padding:clamp(40px,5vw,72px) 0}
  .section-head{max-width:760px;margin-bottom:clamp(28px,4vw,44px)}
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    font-weight:600;
    letter-spacing:1px;
    color:var(--primary-2);
    background:rgba(31,167,201,.1);
    border:1px solid rgba(111,227,242,.22);
    border-radius:999px;
    padding:5px 14px;
    margin-bottom:16px;
  }
  .section-title{font-size:clamp(24px,3.4vw,36px);line-height:1.25;font-weight:780}
  .section-desc{margin-top:14px;font-size:15.5px;line-height:1.85;color:var(--ink-2)}

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

  /* ---------- 页头 ---------- */
  .page-hero{
    position:relative;
    padding:clamp(48px,6vw,84px) 0 clamp(40px,5vw,64px);
    overflow:hidden;
  }
  .page-hero-bg{
    position:absolute;
    inset:0;
    background-image:linear-gradient(100deg, rgba(10,14,19,.94) 8%, rgba(10,14,19,.78) 48%, rgba(10,14,19,.9) 100%),
                     url("/assets/images/backpic/back-3.webp");
    background-size:cover;
    background-position:center;
    z-index:-1;
  }
  .page-hero-bg::after{
    content:"";
    position:absolute;
    inset:0;
    background:radial-gradient(560px 380px at 12% 12%, rgba(31,167,201,.22), transparent 66%),
               radial-gradient(420px 320px at 88% 90%, rgba(255,122,47,.12), transparent 68%);
  }
  .breadcrumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--ink-3);
    margin-bottom:20px;
  }
  .breadcrumb a{color:var(--ink-2);transition:color .2s ease}
  .breadcrumb a:hover{color:var(--primary-2)}
  .breadcrumb li{display:flex;align-items:center;gap:8px}
  .breadcrumb li+li::before{content:"/";color:var(--ink-3);opacity:.7}
  .breadcrumb .current{color:var(--ink)}

  .page-hero h1{
    font-size:clamp(28px,4.2vw,46px);
    line-height:1.2;
    font-weight:800;
    letter-spacing:.3px;
    max-width:900px;
  }
  .page-hero .lede{
    margin-top:18px;
    font-size:17px;
    line-height:1.85;
    color:var(--ink-2);
    max-width:720px;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}

  .stat-strip{
    margin-top:clamp(32px,4vw,48px);
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:1px;
    background:var(--line);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    overflow:hidden;
  }
  .stat-strip > div{
    background:rgba(13,20,28,.72);
    backdrop-filter:blur(14px);
    padding:22px 20px;
  }
  .stat-value{
    font-family:var(--font-num);
    font-variant-numeric:tabular-nums;
    font-size:clamp(24px,3vw,32px);
    font-weight:700;
    color:var(--primary-2);
    line-height:1.1;
  }
  .stat-label{margin-top:8px;font-size:13px;color:var(--ink-3);line-height:1.6}
  @media (max-width:820px){
    .stat-strip{grid-template-columns:1fr 1fr}
  }

  /* ---------- FAQ ---------- */
  .faq-list{display:flex;flex-direction:column;gap:10px;max-width:920px}
  .faq-item{
    position:relative;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-img);
    overflow:hidden;
    transition:border-color .22s ease, background .22s ease;
  }
  .faq-item:hover{border-color:rgba(111,227,242,.22)}
  .faq-item[open]{
    border-color:rgba(111,227,242,.3);
    background:rgba(255,255,255,.07);
  }
  .faq-item[open]::before{
    content:"";
    position:absolute;
    left:0;top:0;bottom:0;
    width:4px;
    background:linear-gradient(180deg,var(--primary),var(--primary-2));
  }
  .faq-q{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:18px 20px;
    font-size:16.5px;
    font-weight:600;
    color:var(--ink);
    cursor:pointer;
    list-style:none;
    line-height:1.6;
  }
  .faq-q::-webkit-details-marker{display:none}
  .faq-icon{position:relative;width:16px;height:16px;flex:0 0 16px}
  .faq-icon::before,
  .faq-icon::after{
    content:"";
    position:absolute;
    background:var(--primary-2);
    border-radius:2px;
    transition:transform .25s ease, opacity .25s ease;
  }
  .faq-icon::before{left:0;top:7px;width:16px;height:2px}
  .faq-icon::after{left:7px;top:0;width:2px;height:16px}
  .faq-item[open] .faq-icon::after{transform:scaleY(0)}
  .faq-a{
    padding:0 20px 20px;
    font-size:15px;
    line-height:1.85;
    color:var(--ink-2);
    max-width:760px;
  }

  /* ---------- 自查清单 ---------- */
  .check-list{display:grid;gap:12px}
  .check-item{
    display:flex;
    align-items:flex-start;
    gap:16px;
    min-height:64px;
    padding:18px 20px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-img);
    transition:border-color .22s ease, transform .22s ease, box-shadow .22s ease;
  }
  .check-item:hover{
    border-color:var(--line-strong);
    transform:translateY(-2px);
    box-shadow:var(--shadow-card);
  }
  .check-ico{
    flex:0 0 44px;
    width:44px;height:44px;
    border-radius:12px;
    display:grid;place-items:center;
    background:rgba(31,167,201,.12);
    border:1px solid rgba(111,227,242,.2);
    color:var(--primary-2);
  }
  .check-ico svg{width:22px;height:22px}
  .check-body h3{font-size:16.5px;font-weight:650;line-height:1.5}
  .check-body p{margin-top:6px;font-size:14.5px;line-height:1.75;color:var(--ink-2)}

  /* ---------- 反馈顺序 ---------- */
  .flow{
    display:flex;
    align-items:stretch;
    gap:0;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--r-card);
    backdrop-filter:blur(16px);
    box-shadow:var(--shadow-card);
    overflow:hidden;
  }
  .flow-step{
    flex:1;
    padding:26px 24px;
    position:relative;
    transition:background .22s ease;
  }
  .flow-step+.flow-step{border-left:1px solid var(--line)}
  .flow-step:hover{background:rgba(31,167,201,.07)}
  .flow-num{
    font-family:var(--font-num);
    font-variant-numeric:tabular-nums;
    font-size:13px;
    font-weight:700;
    color:var(--accent);
    letter-spacing:1px;
  }
  .flow-step h3{margin-top:12px;font-size:17px;font-weight:650}
  .flow-step p{margin-top:8px;font-size:14.5px;line-height:1.78;color:var(--ink-2)}
  @media (max-width:820px){
    .flow{flex-direction:column}
    .flow-step+.flow-step{border-left:0;border-top:1px solid var(--line)}
  }

  /* ---------- CTA ---------- */
  .cta-panel{
    position:relative;
    padding:clamp(32px,5vw,56px);
    border-radius:var(--r-card);
    border:1px solid rgba(111,227,242,.22);
    background:
      radial-gradient(520px 320px at 8% 0%, rgba(31,167,201,.22), transparent 66%),
      radial-gradient(400px 280px at 96% 100%, rgba(255,122,47,.14), transparent 68%),
      rgba(255,255,255,.05);
    backdrop-filter:blur(16px);
    overflow:hidden;
  }
  .cta-panel h2{font-size:clamp(22px,3vw,32px);line-height:1.3;font-weight:780}
  .cta-panel p{margin-top:14px;max-width:640px;font-size:15.5px;line-height:1.85;color:var(--ink-2)}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  .cta-note{margin-top:18px;font-size:13px;color:var(--ink-3);line-height:1.7}

  /* ---------- 页脚 ---------- */
  .site-footer{
    margin-top:clamp(40px,6vw,80px);
    border-top:1px solid var(--line);
    background:linear-gradient(180deg, rgba(31,167,201,.06), rgba(10,14,19,0) 120px), var(--bg-2);
    position:relative;
  }
  .site-footer::before{
    content:"";
    position:absolute;
    top:0;left:0;right:0;
    height:1px;
    background:linear-gradient(90deg, transparent, rgba(111,227,242,.5), transparent);
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.6fr 1fr 1fr 1fr;
    gap:40px;
    padding:clamp(40px,5vw,64px) 0 36px;
  }
  .footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:16px}
  .footer-desc{font-size:14px;line-height:1.8;color:var(--ink-2);max-width:340px}
  .footer-col h4{
    font-size:14px;
    font-weight:700;
    color:var(--primary-2);
    letter-spacing:1.2px;
    margin-bottom:16px;
  }
  .footer-col ul{display:flex;flex-direction:column;gap:11px}
  .footer-col a,.footer-col span{
    font-size:14px;
    color:var(--ink-2);
    transition:color .2s ease, transform .2s ease;
    display:inline-block;
  }
  .footer-col a:hover{color:var(--ink);transform:translateX(-2px)}
  .footer-bottom{
    border-top:1px solid var(--line);
    padding:20px 0;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
  }
  .footer-bottom p{font-size:13px;color:var(--ink-3);line-height:1.7}
  .to-top{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13.5px;
    font-weight:600;
    color:var(--ink-2);
    transition:color .2s ease;
  }
  .to-top svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
  .to-top:hover{color:var(--primary-2)}
  @media (max-width:900px){
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  }
  @media (max-width:560px){
    .footer-grid{grid-template-columns:1fr}
  }

  /* ---------- 底部固定转化条 ---------- */
  .dock{
    position:fixed;
    left:50%;
    bottom:20px;
    transform:translate(-50%,24px);
    width:calc(100% - 40px);
    max-width:720px;
    z-index:70;
    opacity:0;
    visibility:hidden;
    transition:opacity .3s ease, transform .3s ease, visibility .3s ease;
  }
  .dock.is-visible{opacity:1;visibility:visible;transform:translate(-50%,0)}
  .dock-inner{
    display:flex;
    align-items:center;
    gap:16px;
    height:64px;
    padding:0 14px 0 24px;
    border-radius:999px;
    background:rgba(16,24,35,.86);
    border:1px solid rgba(111,227,242,.24);
    backdrop-filter:blur(16px);
    box-shadow:0 18px 40px rgba(0,0,0,.5);
  }
  .dock-text{
    font-size:14px;
    color:var(--ink-2);
    line-height:1.4;
    flex:1;
    min-width:0;
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
  }
  .dock-text strong{color:var(--ink);font-weight:650}
  .dock-close{
    flex:0 0 36px;
    width:36px;height:36px;
    border-radius:50%;
    border:1px solid var(--line);
    background:rgba(255,255,255,.04);
    color:var(--ink-3);
    cursor:pointer;
    font-size:13px;
    line-height:1;
    transition:color .2s ease, border-color .2s ease;
  }
  .dock-close:hover{color:var(--primary-2);border-color:var(--primary)}
  @media (max-width:640px){
    .dock{
      left:0;
      bottom:0;
      transform:translateY(24px);
      width:100%;
      max-width:none;
    }
    .dock.is-visible{transform:translateY(0)}
    .dock-inner{
      height:auto;
      min-height:64px;
      border-radius:0;
      border-left:0;border-right:0;border-bottom:0;
      padding:10px 16px calc(10px + env(safe-area-inset-bottom));
      flex-wrap:wrap;
      gap:10px;
    }
    .dock-text{flex:1 1 100%;white-space:normal;font-size:13px}
    .dock-inner .btn{flex:1}
    .dock-close{flex:0 0 32px;width:32px;height:32px}
  }