/* roulang page: index */
:root{
  --ink:#14202c;
  --ink-2:#33445a;
  --muted:#6d7d8f;
  --brand:#1c3557;
  --brand-soft:#2b5285;
  --accent:#c8892a;
  --accent-2:#efb352;
  --accent-wash:#fdf5e6;
  --bg:#f5f7fa;
  --surface:#ffffff;
  --surface-2:#f0f3f8;
  --line:#e3e8ef;
  --line-2:#d2dae5;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:26px;
  --shadow-xs:0 1px 2px rgba(20,32,44,.06);
  --shadow-sm:0 2px 10px rgba(20,32,44,.06);
  --shadow:0 14px 34px rgba(20,32,44,.09);
  --shadow-lg:0 26px 64px rgba(20,32,44,.16);
  --ff:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--ff);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease}
button{font-family:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
:focus-visible{outline:3px solid rgba(200,137,42,.6);outline-offset:3px;border-radius:8px}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 22px}
.section{padding:78px 0}
.section--tight{padding:56px 0}
.section--alt{background:var(--surface)}
.section--deep{background:linear-gradient(160deg,#132133 0%,#1c3557 62%,#274a75 100%);color:#eaf0f7}
.sec-head{max-width:770px;margin-bottom:40px}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:1.2px;
  color:var(--accent);
  background:var(--accent-wash);
  border:1px solid rgba(200,137,42,.24);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.section--deep .kicker{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2);color:var(--accent-2)}
.sec-title{
  font-size:clamp(24px,3.1vw,36px);
  line-height:1.32;
  font-weight:800;
  letter-spacing:-.5px;
  color:var(--ink);
}
.section--deep .sec-title{color:#ffffff}
.sec-desc{margin-top:14px;color:var(--muted);font-size:16.5px;max-width:720px}
.section--deep .sec-desc{color:rgba(234,240,247,.76)}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:60;background:var(--surface);box-shadow:0 1px 0 var(--line)}
.topbar{
  background:linear-gradient(100deg,#132133,#1c3557 55%,#2b5285);
  color:#dbe5f0;font-size:13.5px;
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:42px;padding-top:6px;padding-bottom:6px}
.topbar-note{display:flex;align-items:center;gap:9px;color:#cfdbea;font-weight:500;letter-spacing:.2px}
.topbar-note .dot{
  width:7px;height:7px;border-radius:50%;background:var(--accent-2);
  box-shadow:0 0 0 4px rgba(239,179,82,.2);flex:0 0 auto;
}
.topbar-links{display:flex;align-items:center;gap:20px}
.topbar-links a{color:#c3d3e6;font-weight:500;font-size:13.5px}
.topbar-links a:hover{color:#ffffff}
.topbar-cta{
  background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.28);
  padding:5px 14px;border-radius:999px;color:#ffffff !important;font-weight:700;
}
.topbar-cta:hover{background:rgba(255,255,255,.26)}
.nav-bar{background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;gap:26px;min-height:76px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:44px;height:44px;border-radius:13px;flex:0 0 auto;
  display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand),var(--brand-soft));
  color:#fff;font-weight:800;font-size:20px;
  box-shadow:0 8px 18px rgba(28,53,87,.26);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:16.5px;font-weight:800;letter-spacing:-.3px;color:var(--ink)}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:1.4px;margin-top:3px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.main-nav a{
  position:relative;
  padding:9px 14px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--ink-2);
  white-space:nowrap;
}
.main-nav a:hover{color:var(--brand);background:var(--surface-2)}
.main-nav a.is-active{color:var(--brand);background:rgba(28,53,87,.08)}
.main-nav a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--accent);
}
.nav-cta{flex:0 0 auto;margin-left:10px}
.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-2);background:#fff;color:var(--brand);
  font-size:18px;align-items:center;justify-content:center;
}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:999px;
  font-size:15.5px;font-weight:700;line-height:1.2;
  border:1px solid transparent;text-align:center;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease,border-color .18s ease;
}
.btn i{font-size:14px}
.btn:active{transform:translateY(1px) scale(.995)}
.btn-primary{
  background:linear-gradient(135deg,var(--brand),var(--brand-soft));
  color:#fff;box-shadow:0 10px 24px rgba(28,53,87,.26);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(28,53,87,.32);color:#fff}
.btn-accent{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#2b1d02;box-shadow:0 10px 24px rgba(200,137,42,.3);
}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(200,137,42,.38);color:#2b1d02}
.btn-ghost{background:#fff;color:var(--brand);border-color:var(--line-2);box-shadow:var(--shadow-xs)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.btn-light{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.42);color:#fff}
.btn-light:hover{background:rgba(255,255,255,.22);color:#fff;transform:translateY(-2px)}
.btn-lg{padding:16px 32px;font-size:16.5px}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-block{display:flex;width:100%}

/* ===== Hero ===== */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 420px at 88% -12%,rgba(200,137,42,.16),transparent 68%),
    radial-gradient(760px 520px at 4% 0%,rgba(43,82,133,.16),transparent 62%),
    linear-gradient(180deg,#f8fafc,#eef2f8);
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center;padding:70px 0 74px}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;font-weight:700;letter-spacing:1.1px;
  color:var(--brand);
  background:#fff;border:1px solid var(--line-2);
  padding:7px 15px;border-radius:999px;
  box-shadow:var(--shadow-xs);
}
.eyebrow span{color:var(--accent);font-weight:800}
.hero h1{
  margin-top:20px;
  font-size:clamp(28px,4vw,47px);
  line-height:1.24;
  letter-spacing:-1.1px;
  font-weight:800;
  color:var(--ink);
}
.hero-sub{
  margin-top:18px;
  font-size:clamp(17px,2vw,21px);
  font-weight:700;
  color:var(--brand-soft);
  letter-spacing:-.2px;
}
.hero-lead{margin-top:14px;color:var(--ink-2);font-size:16.5px;max-width:590px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:28px}
.hero-points li{
  display:flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:600;color:var(--ink-2);
}
.hero-points li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:11px;color:var(--accent);
  width:20px;height:20px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--accent-wash);border:1px solid rgba(200,137,42,.3);
}
.hero-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:28px;
  box-shadow:var(--shadow-lg);
  position:relative;
}
.hero-panel::before{
  content:"";position:absolute;inset:-1px -1px auto -1px;height:5px;
  border-radius:26px 26px 0 0;
  background:linear-gradient(90deg,var(--brand),var(--brand-soft) 46%,var(--accent-2));
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:14px;padding-bottom:16px;border-bottom:1px dashed var(--line-2)}
.panel-head h2{font-size:18px;font-weight:800;letter-spacing:-.3px}
.panel-badge{
  font-size:12px;font-weight:700;color:#a8611a;
  background:var(--accent-wash);border:1px solid rgba(200,137,42,.3);
  padding:4px 11px;border-radius:999px;white-space:nowrap;
}
.panel-list{margin-top:16px;display:grid;gap:2px}
.panel-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--line)}
.panel-list li:last-child{border-bottom:0}
.panel-list span{font-size:14.5px;color:var(--muted)}
.panel-list strong{font-size:15px;font-weight:700;color:var(--ink)}
.panel-score{
  display:flex;align-items:center;gap:14px;
  margin-top:16px;padding:14px 16px;border-radius:var(--radius-sm);
  background:linear-gradient(120deg,#f7fafd,#eef3fa);
  border:1px solid var(--line);
}
.panel-score strong{font-size:30px;font-weight:800;color:var(--brand);letter-spacing:-1px;line-height:1}
.panel-score .score-meta{display:flex;flex-direction:column;gap:2px}
.score-stars{color:var(--accent);font-size:12.5px;letter-spacing:2px}
.score-meta em{font-style:normal;font-size:13px;color:var(--muted)}
.panel-tip{margin-top:12px;font-size:13px;color:var(--muted);text-align:center}
.hero-panel .btn{margin-top:16px}

/* ===== Stats ===== */
.stats-strip{background:var(--surface);border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat-item{padding:30px 24px;border-right:1px solid var(--line);text-align:center}
.stat-item:last-child{border-right:0}
.stat-num{font-size:30px;font-weight:800;letter-spacing:-1px;color:var(--brand);line-height:1.1}
.stat-num small{font-size:15px;font-weight:700;margin-left:3px;color:var(--brand-soft)}
.stat-label{margin-top:6px;font-size:14px;color:var(--muted)}

/* ===== Cards ===== */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px;
  box-shadow:var(--shadow-xs);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-2)}
.card-icon{
  width:46px;height:46px;border-radius:13px;
  display:grid;place-items:center;font-size:19px;
  background:linear-gradient(140deg,rgba(28,53,87,.09),rgba(43,82,133,.16));
  color:var(--brand);margin-bottom:16px;
}
.card h3{font-size:17.5px;font-weight:800;letter-spacing:-.3px;margin-bottom:9px}
.card p{font-size:15px;color:var(--muted);line-height:1.8}

/* route cards */
.route-card{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:26px;
  box-shadow:var(--shadow-xs);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  position:relative;overflow:hidden;
}
.route-card::after{
  content:"";position:absolute;left:0;top:0;bottom:0;width:4px;
  background:linear-gradient(180deg,var(--brand-soft),var(--accent-2));
  opacity:0;transition:opacity .2s ease;
}
.route-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-2)}
.route-card:hover::after{opacity:1}
.route-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}
.route-rank{
  font-size:12px;font-weight:800;letter-spacing:1px;
  color:var(--brand);background:var(--surface-2);
  border:1px solid var(--line-2);padding:3px 10px;border-radius:999px;
}
.route-chip{font-size:12px;font-weight:700;color:#a8611a;background:var(--accent-wash);padding:3px 10px;border-radius:999px;border:1px solid rgba(200,137,42,.28)}
.route-card h3{font-size:18px;font-weight:800;letter-spacing:-.3px;margin-bottom:10px}
.route-card p{font-size:14.8px;color:var(--muted);flex:1 1 auto}
.route-link{
  margin-top:18px;display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;font-weight:700;color:var(--brand);
}
.route-link i{transition:transform .2s ease;font-size:12px}
.route-card:hover .route-link i{transform:translateX(4px)}

/* highlights */
.split{display:grid;grid-template-columns:.85fr 1.15fr;gap:52px;align-items:start}
.hl-list{display:grid;gap:14px}
.hl-item{
  display:grid;grid-template-columns:52px 1fr;gap:18px;align-items:start;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:20px 22px;
  box-shadow:var(--shadow-xs);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.hl-item:hover{transform:translateX(4px);box-shadow:var(--shadow-sm);border-color:var(--line-2)}
.hl-num{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;
  font-weight:800;font-size:15px;letter-spacing:.5px;
  background:linear-gradient(140deg,var(--brand),var(--brand-soft));
  color:#fff;box-shadow:0 8px 18px rgba(28,53,87,.22);
}
.hl-body h3{font-size:16.5px;font-weight:800;margin-bottom:6px;letter-spacing:-.2px}
.hl-body p{font-size:14.8px;color:var(--muted)}
.hl-tag{
  display:inline-block;margin-top:9px;font-size:12.5px;font-weight:700;
  color:var(--brand);background:var(--surface-2);border:1px solid var(--line-2);
  padding:2px 10px;border-radius:999px;
}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step}
.step{
  position:relative;padding:28px 24px 24px;
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius);
  transition:background .2s ease,transform .2s ease,border-color .2s ease;
}
.step:hover{background:rgba(255,255,255,.12);transform:translateY(-4px);border-color:rgba(255,255,255,.32)}
.step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;top:16px;right:20px;
  font-size:34px;font-weight:800;letter-spacing:-2px;
  color:rgba(255,255,255,.14);line-height:1;
}
.step h3{font-size:17px;font-weight:800;color:#fff;margin:16px 0 8px;letter-spacing:-.2px}
.step p{font-size:14.6px;color:rgba(234,240,247,.76)}
.step-icon{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(239,179,82,.16);border:1px solid rgba(239,179,82,.36);
  color:var(--accent-2);font-size:17px;
}

/* quotes */
.quote{
  display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:26px;
  box-shadow:var(--shadow-xs);
  transition:transform .2s ease,box-shadow .2s ease;
}
.quote:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.quote-stars{color:var(--accent);font-size:13px;letter-spacing:2.5px;margin-bottom:12px}
.quote p{font-size:15.2px;color:var(--ink-2);flex:1 1 auto}
.quote-who{display:flex;align-items:center;gap:11px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.avatar{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  font-weight:800;font-size:14px;color:#fff;
  background:linear-gradient(140deg,var(--brand-soft),var(--brand));
}
.quote-who strong{display:block;font-size:14.5px;font-weight:700}
.quote-who em{font-style:normal;font-size:12.5px;color:var(--muted)}

/* FAQ */
.faq{display:grid;gap:14px;max-width:900px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow-xs);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(43,82,133,.4);box-shadow:var(--shadow-sm)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;gap:14px;
  padding:19px 24px;font-size:16px;font-weight:700;color:var(--ink);
  transition:background .2s ease,color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--surface-2);color:var(--brand)}
.faq-item summary::after{
  content:"\2b";margin-left:auto;flex:0 0 auto;
  width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
  background:var(--surface-2);color:var(--brand-soft);
  font-size:15px;font-weight:700;transition:transform .2s ease,background .2s ease,color .2s ease;
}
.faq-item[open] summary::after{content:"\2212";background:var(--brand);color:#fff;transform:rotate(180deg)}
.faq-body{padding:0 24px 22px 24px;color:var(--muted);font-size:15.2px;line-height:1.85}

/* CTA */
.cta-panel{
  position:relative;overflow:hidden;
  border-radius:var(--radius-lg);
  padding:54px 48px;
  background:linear-gradient(125deg,#132133,#1c3557 52%,#2b5285);
  color:#eaf0f7;box-shadow:var(--shadow-lg);
  display:grid;grid-template-columns:1.2fr .8fr;gap:40px;align-items:center;
}
.cta-panel::before{
  content:"";position:absolute;width:420px;height:420px;right:-120px;top:-160px;
  background:radial-gradient(circle,rgba(239,179,82,.3),transparent 66%);pointer-events:none;
}
.cta-panel h2{font-size:clamp(23px,3vw,32px);font-weight:800;line-height:1.32;letter-spacing:-.6px;color:#fff;position:relative}
.cta-panel p{margin-top:14px;color:rgba(234,240,247,.8);font-size:16px;max-width:560px;position:relative}
.cta-actions{display:flex;flex-direction:column;gap:14px;position:relative}
.cta-note{font-size:13px;color:rgba(234,240,247,.66);text-align:center}

/* footer */
.site-footer{background:#0f1b28;color:#a9bacd;padding:58px 0 30px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:44px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{box-shadow:none;background:linear-gradient(140deg,#2b5285,#3d6ea8)}
.footer-brand strong{font-size:16.5px;font-weight:800;color:#fff;letter-spacing:-.3px}
.footer-brand em{display:block;font-style:normal;font-size:12px;color:#7f93a9;letter-spacing:1.4px;margin-top:2px}
.site-footer p.footer-desc{font-size:14.5px;line-height:1.85;color:#8ea3b9;max-width:420px}
.footer-col h4{font-size:14px;font-weight:800;color:#e6eef7;letter-spacing:.6px;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:14.5px;color:#8ea3b9}
.footer-col a:hover{color:var(--accent-2)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:24px;font-size:13.5px;color:#7288a0;flex-wrap:wrap}
.footer-bottom a{color:#8ea3b9}
.footer-bottom a:hover{color:var(--accent-2)}

/* responsive */
@media screen and (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:40px;padding:52px 0 58px}
  .hero-panel{max-width:560px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:34px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat-item:nth-child(2){border-right:0}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line)}
  .cta-panel{grid-template-columns:1fr;padding:42px 34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .nav-inner{gap:14px}
  .main-nav{gap:0}
  .main-nav a{padding:8px 10px;font-size:14px}
}
@media screen and (max-width:860px){
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .main-nav{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow);
    padding:12px 18px 18px;
    display:none;
  }
  .main-nav.is-open{display:flex}
  .main-nav a{padding:12px 14px;font-size:15px;border-radius:10px}
  .main-nav a.is-active::after{display:none}
  .nav-bar{position:relative}
  .grid-3{grid-template-columns:repeat(2,1fr)}
}
@media screen and (max-width:768px){
  .section{padding:58px 0}
  .section--tight{padding:44px 0}
  .topbar-links a:not(.topbar-cta){display:none}
  .brand-text strong{font-size:15px}
  .brand-text em{display:none}
  .hero h1{letter-spacing:-.6px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .cta-panel{padding:36px 24px;border-radius:var(--radius)}
  .hero-panel{padding:22px}
}
@media screen and (max-width:520px){
  .wrap{padding:0 16px}
  .topbar-inner{min-height:38px;font-size:12.5px}
  .topbar-note{font-size:12.5px;gap:7px}
  .brand-mark{width:38px;height:38px;border-radius:11px;font-size:17px}
  .brand-text strong{font-size:14px}
  .nav-inner{min-height:64px}
  .hero-grid{padding:40px 0 46px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .stats-grid{grid-template-columns:1fr}
  .stat-item{border-right:0;border-bottom:1px solid var(--line);padding:22px 16px}
  .stat-item:last-child{border-bottom:0}
  .card,.route-card,.quote,.hl-item{padding:20px}
  .hl-item{grid-template-columns:44px 1fr;gap:14px}
  .hl-num{width:44px;height:44px;font-size:13.5px}
  .faq-item summary{padding:16px 18px;font-size:15px}
  .faq-body{padding:0 18px 18px}
  .cta-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}

/* roulang page: category1 */
:root{
  --ink:#0d1f38;
  --ink-2:#173453;
  --ink-3:#22456b;
  --accent:#e3a63c;
  --accent-deep:#c2861d;
  --accent-soft:#fdf3e0;
  --bg:#f4f6f9;
  --surface:#ffffff;
  --surface-2:#eef1f6;
  --line:#e0e5ed;
  --text:#18212e;
  --muted:#5c6b7e;
  --muted-2:#8494a8;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:9px;
  --shadow-xs:0 1px 2px rgba(13,31,56,.06);
  --shadow-sm:0 6px 16px rgba(13,31,56,.07);
  --shadow-md:0 14px 34px rgba(13,31,56,.10);
  --shadow-lg:0 26px 60px rgba(13,31,56,.16);
  --wrap:1180px;
  --ease:cubic-bezier(.3,.7,.3,1);
}

/* ---------- base reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{
  margin:0 0 .6em;
  font-weight:800;
  line-height:1.28;
  color:var(--ink);
  letter-spacing:-.01em;
}
h1{font-size:clamp(26px,3.4vw,44px);}
h2{font-size:clamp(22px,2.5vw,32px);}
h3{font-size:clamp(17px,1.6vw,21px);}
h4{font-size:16px;}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
a{color:var(--ink-2);text-decoration:none;transition:color .22s var(--ease);}
a:hover,a:focus{color:var(--accent-deep);}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;height:auto;display:block;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
button:focus-visible,a:focus-visible,summary:focus-visible{
  outline:3px solid rgba(227,166,60,.7);
  outline-offset:3px;
  border-radius:6px;
}
::selection{background:rgba(227,166,60,.35);}

/* ---------- layout ---------- */
.wrap,.container{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 22px;
}
.section{padding:72px 0;}
.section--tight{padding:52px 0;}
.section--alt{background:var(--surface);}
.section--dark{
  background:linear-gradient(160deg,var(--ink) 0%,var(--ink-2) 62%,var(--ink-3) 100%);
  color:#dbe4f0;
}
.section--dark h2,.section--dark h3{color:#fff;}
.section--dark p{color:#c2cfe0;}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent-deep);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;
}
.section--dark .eyebrow{color:var(--accent);}
.section-head p{color:var(--muted);font-size:16.5px;margin-bottom:0;}
.section--dark .section-head p{color:#b9c8dc;}

.grid{display:grid;gap:22px;}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr));}

/* ---------- badges & buttons ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12.5px;font-weight:700;line-height:1.6;
  background:var(--surface-2);color:var(--ink-2);
  border:1px solid var(--line);
}
.badge--accent{background:var(--accent-soft);color:var(--accent-deep);border-color:#f0dcb6;}
.badge--dark{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.2);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 26px;border-radius:999px;
  font-size:15.5px;font-weight:700;line-height:1.4;
  border:1px solid transparent;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  will-change:transform;
}
.btn:hover{transform:translateY(-2px);}
.btn:active{transform:translateY(0);}
.btn-primary{
  background:linear-gradient(180deg,#f0b452,var(--accent));
  color:#3a2604;box-shadow:0 10px 24px rgba(227,166,60,.34);
}
.btn-primary:hover,.btn-primary:focus{color:#2f1e02;box-shadow:0 14px 30px rgba(227,166,60,.44);}
.btn-ghost{
  background:transparent;color:#fff;border-color:rgba(255,255,255,.38);
}
.btn-ghost:hover,.btn-ghost:focus{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.6);}
.btn-outline{
  background:var(--surface);color:var(--ink-2);border-color:var(--line);box-shadow:var(--shadow-xs);
}
.btn-outline:hover,.btn-outline:focus{border-color:var(--accent);color:var(--accent-deep);box-shadow:var(--shadow-sm);}
.btn-sm{padding:10px 18px;font-size:14px;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;}
.topbar{
  background:var(--ink);
  color:#c4d2e4;
  font-size:13px;
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:38px;padding-top:6px;padding-bottom:6px;flex-wrap:wrap;
}
.topbar-note{display:flex;align-items:center;gap:9px;margin:0;font-size:13px;color:#c4d2e4;}
.dot{
  width:7px;height:7px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px rgba(227,166,60,.2);flex:0 0 auto;
}
.topbar-links{display:flex;align-items:center;gap:20px;}
.topbar-links a{color:#c4d2e4;font-size:13px;}
.topbar-links a:hover{color:#fff;}
.topbar-cta{
  padding:5px 14px;border-radius:999px;
  background:rgba(227,166,60,.16);color:var(--accent)!important;
  border:1px solid rgba(227,166,60,.4);font-weight:700;
}
.topbar-cta:hover{background:rgba(227,166,60,.28);}

.nav-bar{
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
  box-shadow:0 4px 18px rgba(13,31,56,.05);
}
.nav-inner{
  display:flex;align-items:center;gap:24px;
  min-height:72px;padding-top:10px;padding-bottom:10px;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:42px;height:42px;border-radius:13px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,var(--ink) 0%,var(--ink-3) 100%);
  color:var(--accent);font-weight:800;font-size:20px;
  box-shadow:0 8px 18px rgba(13,31,56,.24);
  flex:0 0 auto;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:16.5px;color:var(--ink);font-weight:800;}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted-2);letter-spacing:.06em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:wrap;}
.main-nav a{
  position:relative;
  padding:9px 13px;border-radius:10px;
  font-size:14.5px;font-weight:600;color:var(--muted);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.main-nav a:hover{color:var(--ink);background:var(--surface-2);}
.main-nav a.is-active{color:var(--ink);background:var(--accent-soft);}
.main-nav a.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:4px;height:2px;
  background:var(--accent);border-radius:2px;
}
.nav-cta{flex:0 0 auto;}
.nav-toggle{
  display:none;margin-left:auto;
  width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);
  color:var(--ink);font-size:18px;
  align-items:center;justify-content:center;
  transition:background .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{background:var(--surface-2);border-color:#cfd8e4;}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 460px at 82% -12%,rgba(227,166,60,.20),transparent 62%),
    radial-gradient(700px 420px at 6% 108%,rgba(52,110,175,.30),transparent 60%),
    linear-gradient(155deg,var(--ink) 0%,var(--ink-2) 58%,#1d3f66 100%);
  color:#d8e3f1;
  padding:66px 0 74px;
}
.hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent);
}
.hero-grid{
  display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;
}
.hero h1{color:#fff;margin-bottom:18px;}
.hero h1 .hl{
  color:var(--accent);
  background:linear-gradient(180deg,transparent 68%,rgba(227,166,60,.24) 68%);
  padding:0 3px;
}
.hero-lead{font-size:17px;color:#bccbde;max-width:620px;margin-bottom:26px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}
.hero-note{font-size:13.5px;color:#93a7bf;margin-top:18px;display:flex;align-items:center;gap:8px;}

.hero-card{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-lg);
  padding:26px;
  box-shadow:var(--shadow-lg);
  backdrop-filter:blur(6px);
}
.hero-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;}
.hero-card-top span{font-size:13px;color:#9fb3ca;letter-spacing:.08em;}
.hero-card-top strong{font-size:15px;color:#fff;}
.hero-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;}
.hero-stat{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);
  padding:14px 16px;
}
.hero-stat b{display:block;font-size:22px;color:var(--accent);line-height:1.3;}
.hero-stat small{font-size:12.5px;color:#a7b8cc;letter-spacing:.03em;}
.hero-bar{
  margin-top:18px;height:8px;border-radius:99px;
  background:rgba(255,255,255,.14);overflow:hidden;
}
.hero-bar i{
  display:block;height:100%;width:100%;
  background:linear-gradient(90deg,var(--accent),#f5cd7e);
  border-radius:99px;
}
.hero-bar-cap{display:flex;justify-content:space-between;font-size:12.5px;color:#9fb3ca;margin-top:8px;}

/* ---------- generic cards ---------- */
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:26px;
  box-shadow:var(--shadow-xs);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#d3dce8;}
.card h3{margin-bottom:10px;}
.card p{color:var(--muted);font-size:15px;margin-bottom:0;}
.card-icon{
  width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;font-size:19px;
  background:var(--accent-soft);color:var(--accent-deep);
  margin-bottom:16px;
}
.card-icon--dark{background:rgba(255,255,255,.1);color:var(--accent);}
.card-top{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.card-num{
  font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--accent-deep);
}

/* ---------- routes / 分段路线 ---------- */
.route{
  position:relative;
  display:grid;grid-template-columns:118px 1fr;gap:26px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:24px 26px;
  box-shadow:var(--shadow-xs);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),transform .25s var(--ease);
}
.route:hover{border-color:#cfdae8;box-shadow:var(--shadow-sm);transform:translateX(3px);}
.route-ep{
  align-self:start;
  text-align:center;
  border-right:1px dashed var(--line);
  padding-right:18px;
}
.route-ep b{display:block;font-size:24px;color:var(--ink);line-height:1.2;}
.route-ep span{font-size:12.5px;color:var(--muted-2);letter-spacing:.06em;}
.route-body h3{margin-bottom:8px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.route-body p{color:var(--muted);font-size:15px;margin-bottom:12px;}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  font-size:12.5px;font-weight:600;
  background:var(--surface-2);color:var(--ink-2);
  border:1px solid var(--line);
}
.tag--accent{background:var(--accent-soft);color:var(--accent-deep);border-color:#f2ddba;}

/* ---------- turning points ---------- */
.turn-list{display:grid;gap:14px;}
.turn{
  display:grid;grid-template-columns:96px 1fr;gap:20px;align-items:start;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius);
  padding:18px 22px;
  transition:background .25s var(--ease),border-color .25s var(--ease);
}
.turn:hover{background:rgba(255,255,255,.09);border-color:rgba(227,166,60,.5);}
.turn-ep{
  font-weight:800;font-size:15px;color:var(--accent);
  letter-spacing:.04em;padding-top:2px;
}
.turn h4{color:#fff;margin-bottom:6px;font-size:16.5px;}
.turn p{color:#b3c3d7;font-size:14.5px;margin:0;}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:step;}
.step{
  position:relative;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:26px 22px 22px;
  box-shadow:var(--shadow-xs);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.step::before{
  counter-increment:step;content:"0" counter(step);
  display:inline-block;margin-bottom:14px;
  font-size:13px;font-weight:800;letter-spacing:.12em;
  color:var(--accent-deep);
  background:var(--accent-soft);
  padding:4px 12px;border-radius:999px;
}
.step h4{margin-bottom:8px;font-size:16.5px;}
.step p{color:var(--muted);font-size:14.5px;margin:0;}

/* ---------- checklist ---------- */
.check-list{display:grid;gap:12px;}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:15px;color:var(--muted);
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:14px 18px;
}
.check-list li i{color:var(--accent-deep);margin-top:5px;font-size:14px;flex:0 0 auto;}
.check-list li strong{color:var(--ink);}

/* ---------- audience / 适用场景 ---------- */
.scene{
  display:flex;gap:16px;align-items:flex-start;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:22px;
  box-shadow:var(--shadow-xs);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.scene:hover{border-color:#d3dce8;box-shadow:var(--shadow-sm);}
.scene-icon{
  width:44px;height:44px;border-radius:13px;flex:0 0 auto;
  display:grid;place-items:center;
  background:linear-gradient(150deg,var(--ink) 0%,var(--ink-3) 100%);
  color:var(--accent);font-size:17px;
}
.scene h3{font-size:16.5px;margin-bottom:6px;}
.scene p{color:var(--muted);font-size:14.5px;margin:0;}

/* ---------- faq ---------- */
.faq{display:grid;gap:12px;max-width:900px;margin:0 auto;}
.faq details{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:0 22px;
  box-shadow:var(--shadow-xs);
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.faq details[open]{border-color:#f0dcb6;box-shadow:var(--shadow-sm);}
.faq summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 0;
  font-size:16px;font-weight:700;color:var(--ink);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:12px;color:var(--muted-2);
  transition:transform .25s var(--ease),color .25s var(--ease);
}
.faq details[open] summary::after{transform:rotate(180deg);color:var(--accent-deep);}
.faq .faq-body{
  padding:0 0 20px;
  font-size:15px;color:var(--muted);
  border-top:1px solid var(--line);
  padding-top:16px;
}

/* ---------- cta ---------- */
.cta{
  position:relative;overflow:hidden;
  border-radius:26px;
  padding:52px 44px;
  background:
    radial-gradient(600px 300px at 88% 0%,rgba(227,166,60,.28),transparent 62%),
    linear-gradient(140deg,var(--ink) 0%,var(--ink-2) 60%,#20456e 100%);
  color:#cfdcec;
  box-shadow:var(--shadow-lg);
}
.cta-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:center;}
.cta h2{color:#fff;margin-bottom:12px;}
.cta p{color:#b9c8dc;margin-bottom:0;font-size:15.5px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.cta-actions .btn-outline{background:rgba(255,255,255,.94);border-color:transparent;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink);
  color:#a9bacd;
  padding:58px 0 26px;
  margin-top:0;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:42px;
  padding-bottom:34px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.16);
  box-shadow:none;
}
.footer-brand strong{display:block;color:#fff;font-size:16px;font-weight:800;}
.footer-brand em{font-style:normal;font-size:12px;color:#8ea3bb;letter-spacing:.06em;}
.footer-desc{font-size:14.5px;color:#93a7bf;line-height:1.85;max-width:440px;}
.footer-col h4{color:#fff;font-size:14.5px;letter-spacing:.05em;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{color:#9fb2c8;font-size:14px;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;
  font-size:13px;color:#7e93ab;
}
.footer-bottom p{margin:0;}

/* ---------- responsive ---------- */
@media screen and (max-width:1024px){
  .nav-inner{flex-wrap:wrap;gap:14px;}
  .main-nav{margin-left:0;width:100%;order:3;gap:2px;}
  .nav-cta{margin-left:auto;}
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .cta-grid{grid-template-columns:1fr;gap:26px;}
  .cta-actions{justify-content:flex-start;}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1.2fr 1fr 1fr;gap:30px;}
}
@media screen and (max-width:768px){
  .section{padding:54px 0;}
  .section--tight{padding:40px 0;}
  .hero{padding:48px 0 54px;}
  body{font-size:15.5px;}
  .topbar-links{gap:14px;}
  .topbar-note{font-size:12.5px;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{gap:12px;}
  .main-nav{
    display:none;
    width:100%;order:4;
    flex-direction:column;align-items:stretch;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:8px;margin-top:4px;
    box-shadow:var(--shadow-sm);
  }
  .main-nav.is-open{display:flex;}
  .main-nav a{padding:12px 14px;font-size:15px;}
  .main-nav a.is-active::after{display:none;}
  .nav-cta{display:none;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .route{grid-template-columns:1fr;gap:14px;}
  .route-ep{
    border-right:0;border-bottom:1px dashed var(--line);
    padding:0 0 12px;display:flex;align-items:baseline;gap:10px;text-align:left;
  }
  .turn{grid-template-columns:1fr;gap:6px;}
  .cta{padding:36px 24px;border-radius:20px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .hero-card{padding:20px;}
}
@media screen and (max-width:520px){
  .wrap,.container{padding:0 16px;}
  .brand-text strong{font-size:14.5px;line-height:1.35;}
  .brand-text em{display:none;}
  .brand-mark{width:38px;height:38px;border-radius:11px;font-size:18px;}
  .hero-stats{grid-template-columns:1fr 1fr;}
  .hero-actions .btn{width:100%;}
  .topbar-links a:not(.topbar-cta){display:none;}
  .card,.scene{padding:20px;}
  .section-head{margin-bottom:26px;}
}

/* roulang page: category2 */
:root{
  --ink:#121826;
  --ink-soft:#2b3448;
  --muted:#69718a;
  --line:#e7dfd2;
  --paper:#fbf7f1;
  --white:#ffffff;
  --amber:#e2a13c;
  --amber-deep:#bc7a1a;
  --amber-soft:#fdf1dc;
  --radius-lg:24px;
  --radius:16px;
  --radius-sm:10px;
  --shadow-sm:0 2px 10px rgba(18,24,38,.06);
  --shadow:0 16px 36px rgba(18,24,38,.10);
  --shadow-lg:0 28px 64px rgba(18,24,38,.16);
  --space:clamp(52px,7vw,92px);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink-soft);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),opacity .2s var(--ease);}
button{font:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.25;font-weight:800;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid var(--amber);outline-offset:3px;border-radius:8px;}
section[id]{scroll-margin-top:100px;}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 22px;}

/* ===== 顶部信息条 ===== */
.site-header{position:sticky;top:0;z-index:80;background:rgba(251,247,241,.95);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);}
.topbar{background:var(--ink);color:#d6dbe8;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;padding:8px 0;min-height:44px;}
.topbar-note{display:flex;align-items:center;gap:9px;font-size:13px;color:#e8ebf4;}
.dot{width:7px;height:7px;border-radius:50%;background:var(--amber);box-shadow:0 0 0 4px rgba(226,161,60,.2);animation:pulse 2.4s infinite;flex:0 0 auto;}
@keyframes pulse{50%{box-shadow:0 0 0 9px rgba(226,161,60,0);}}
.topbar-links{display:flex;align-items:center;gap:18px;font-size:13px;}
.topbar-links a{color:#bcc4d8;}
.topbar-links a:hover{color:#fff;}
.topbar-cta{background:var(--amber);color:var(--ink) !important;font-weight:800;padding:5px 15px;border-radius:999px;transition:transform .2s var(--ease),background .2s;}
.topbar-cta:hover{background:#f0b859;transform:translateY(-1px);}

/* ===== 主导航 ===== */
.nav-bar{background:transparent;}
.nav-inner{display:flex;align-items:center;gap:24px;min-height:76px;padding:10px 0;position:relative;}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(140deg,#f2b955,#c8811f);color:#fff;font-weight:800;font-size:20px;box-shadow:0 8px 18px rgba(200,129,31,.3);flex:0 0 auto;}
.brand-text strong{display:block;font-size:17px;font-weight:800;color:var(--ink);line-height:1.3;letter-spacing:-.01em;}
.brand-text em{display:block;font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.06em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:wrap;}
.main-nav a{padding:9px 14px;border-radius:999px;font-size:14.5px;font-weight:700;color:var(--ink-soft);transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);}
.main-nav a:hover{background:#f2ebdd;color:var(--ink);transform:translateY(-1px);}
.main-nav a.is-active{background:var(--ink);color:#fff;box-shadow:var(--shadow-sm);}
.nav-cta{margin-left:8px;}
.nav-toggle{display:none;}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 26px;border-radius:999px;font-size:15px;font-weight:800;border:1px solid transparent;line-height:1.2;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s,color .2s,border-color .2s;white-space:nowrap;}
.btn-primary{background:linear-gradient(140deg,#f2b955,#c8811f);color:#fff;box-shadow:0 12px 26px rgba(200,129,31,.3);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(200,129,31,.36);color:#fff;}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 16px rgba(200,129,31,.28);}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-sm);}
.btn-ghost:hover{border-color:var(--amber);color:var(--amber-deep);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(0);}
.btn-light{background:#fff;color:var(--ink);box-shadow:0 10px 24px rgba(90,52,10,.18);}
.btn-light:hover{background:#fff8ea;transform:translateY(-2px);color:var(--ink);}
.btn-sm{padding:9px 18px;font-size:13.5px;}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;padding:clamp(44px,6vw,80px) 0 clamp(52px,7vw,92px);background:radial-gradient(1100px 520px at 84% -12%,#fff1d6 0%,rgba(255,241,214,0) 62%),linear-gradient(180deg,#fdfaf5 0%,#fbf7f1 100%);}
.hero::after{content:"";position:absolute;left:-140px;bottom:-160px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(226,161,60,.16),rgba(226,161,60,0) 70%);pointer-events:none;}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(30px,5vw,60px);align-items:center;position:relative;z-index:2;}
.eyebrow{display:inline-flex;align-items:center;gap:9px;padding:7px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--amber-deep);font-size:13px;font-weight:800;box-shadow:var(--shadow-sm);}
.hero-title{font-size:clamp(29px,4.3vw,48px);margin:20px 0 0;line-height:1.16;letter-spacing:-.02em;}
.hero-title span{color:var(--amber-deep);}
.hero-lead{margin-top:18px;font-size:clamp(15px,1.5vw,17px);color:#4d566b;max-width:38em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:38px;padding-top:26px;border-top:1px dashed var(--line);}
.stat b{display:block;font-size:clamp(19px,2.3vw,25px);color:var(--ink);font-weight:800;letter-spacing:-.02em;line-height:1.2;}
.stat span{font-size:12.5px;color:var(--muted);}
.hero-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:24px 22px 20px;position:relative;overflow:hidden;}
.hero-panel::before{content:"";position:absolute;inset:0 0 auto 0;height:6px;background:linear-gradient(90deg,var(--amber),#e0703d);}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:6px 0 12px;}
.panel-head h2{font-size:16.5px;}
.panel-tag{font-size:11.5px;font-weight:800;color:var(--amber-deep);background:var(--amber-soft);padding:4px 11px;border-radius:999px;white-space:nowrap;}
.rank-item{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);}
.rank-item:last-child{border-bottom:0;padding-bottom:2px;}
.rank-no{width:28px;height:28px;border-radius:9px;display:grid;place-items:center;font-size:12.5px;font-weight:800;background:#f4ecdd;color:#8a6a2a;flex:0 0 auto;}
.rank-item:nth-child(2) .rank-no{background:linear-gradient(140deg,#f2b955,#c8811f);color:#fff;}
.rank-main{flex:1 1 auto;min-width:0;}
.rank-main strong{display:block;font-size:14.5px;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.rank-main em{font-style:normal;font-size:12px;color:var(--muted);}
.rank-score{font-size:12.5px;font-weight:800;color:var(--amber-deep);white-space:nowrap;}

/* ===== 板块通用 ===== */
.section{padding:var(--space) 0;}
.section-alt{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:740px;margin:0 auto clamp(32px,4vw,52px);text-align:center;}
.section-kicker{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.16em;color:var(--amber-deep);margin-bottom:12px;}
.section-head h2{font-size:clamp(23px,3.1vw,34px);}
.section-head p{margin-top:14px;color:var(--muted);font-size:15.5px;}

/* ===== 精选片单 ===== */
.pick-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.pick-card{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px 20px;box-shadow:var(--shadow-sm);overflow:hidden;transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);}
.pick-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#e8ce9c;}
.rank-badge{position:absolute;top:0;right:0;background:var(--ink);color:#fff;font-size:12px;font-weight:800;padding:7px 15px;border-radius:0 16px 0 16px;letter-spacing:.04em;}
.pick-card h3{font-size:18px;margin-bottom:10px;padding-right:58px;}
.pick-card p{font-size:14.5px;color:var(--muted);flex:1 1 auto;}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0;}
.tag{font-size:12px;font-weight:700;color:#7a5a1c;background:var(--amber-soft);border:1px solid #f3ddb4;padding:4px 10px;border-radius:999px;}
.pick-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:14px;border-top:1px dashed var(--line);font-size:13px;color:var(--muted);}
.pick-foot a{color:var(--amber-deep);font-weight:800;}
.pick-foot a:hover{text-decoration:underline;}

/* ===== 选片维度 ===== */
.feature-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 22px;box-shadow:var(--shadow-sm);transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s;}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#e8ce9c;}
.feature .icon{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:var(--amber-soft);color:var(--amber-deep);font-size:19px;margin-bottom:16px;}
.feature h3{font-size:16.5px;margin-bottom:8px;}
.feature p{font-size:14px;color:var(--muted);}

/* ===== 观看场景 ===== */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.scene{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm);transition:border-color .22s,transform .22s var(--ease);}
.scene:hover{border-color:#e8ce9c;transform:translateY(-3px);}
.scene i{color:var(--amber-deep);font-size:18px;margin-top:5px;flex:0 0 auto;}
.scene strong{display:block;color:var(--ink);font-size:16px;margin-bottom:6px;}
.scene p{font-size:14px;color:var(--muted);}

/* ===== 追更流程 ===== */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:step;}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow-sm);transition:transform .22s var(--ease),box-shadow .22s var(--ease);}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.step::before{counter-increment:step;content:"0" counter(step);display:block;font-size:13px;font-weight:800;letter-spacing:.12em;color:var(--amber-deep);}
.step h3{font-size:16.5px;margin:10px 0 8px;}
.step p{font-size:14px;color:var(--muted);}

/* ===== 深色口碑板块 ===== */
.section-dark{background:radial-gradient(900px 460px at 10% -10%,rgba(226,161,60,.22),rgba(226,161,60,0) 62%),linear-gradient(160deg,#141b2b 0%,#1b2439 55%,#202b45 100%);color:#cdd4e4;padding:var(--space) 0;}
.section-dark .section-kicker{color:#f0b859;}
.section-dark .section-head h2{color:#fff;}
.section-dark .section-head p{color:#a8b2c8;}
.proof-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;text-align:center;}
.proof-stat{padding:24px 14px;border-radius:var(--radius);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);}
.proof-stat b{display:block;font-size:clamp(22px,2.8vw,30px);font-weight:800;color:#fff;letter-spacing:-.02em;}
.proof-stat span{font-size:13px;color:#9aa5bd;}
.proof-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:22px;}
.quote{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:24px;transition:background .22s,border-color .22s;}
.quote:hover{background:rgba(255,255,255,.08);border-color:rgba(240,184,89,.5);}
.quote p{font-size:14.5px;color:#dbe1ee;}
.quote footer{margin-top:16px;font-size:13px;font-weight:800;color:#f0b859;}

/* ===== FAQ ===== */
.faq-list{max-width:860px;margin:0 auto;display:grid;gap:14px;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:0 24px;box-shadow:var(--shadow-sm);transition:border-color .2s,box-shadow .2s;}
.faq-item[open]{border-color:#e8ce9c;box-shadow:var(--shadow);}
.faq-item summary{list-style:none;cursor:pointer;padding:20px 0;font-weight:800;color:var(--ink);font-size:16px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;color:var(--amber-deep);transition:transform .24s var(--ease);flex:0 0 auto;}
.faq-item[open] summary::after{transform:rotate(180deg);}
.faq-item p{padding:0 0 22px;font-size:14.5px;color:var(--muted);}

/* ===== CTA ===== */
.cta-wrap{padding:0 0 var(--space);}
.cta{position:relative;overflow:hidden;border-radius:var(--radius-lg);background:linear-gradient(135deg,#f6c56e 0%,#e0a13a 48%,#c17a1b 100%);color:#fff;padding:clamp(32px,5vw,56px);display:grid;grid-template-columns:1.5fr .5fr;gap:32px;align-items:center;box-shadow:var(--shadow-lg);}
.cta::after{content:"";position:absolute;right:-90px;top:-90px;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.18);pointer-events:none;}
.cta h2{color:#fff;font-size:clamp(23px,3vw,33px);}
.cta p{margin-top:14px;color:rgba(255,255,255,.94);font-size:15.5px;max-width:44em;}
.cta-actions{display:flex;flex-direction:column;gap:12px;position:relative;z-index:2;}
.cta-actions .btn{width:100%;}

/* ===== 页脚 ===== */
.site-footer{background:#101725;color:#a9b2c6;padding:clamp(46px,6vw,72px) 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1);}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand strong{display:block;color:#fff;font-size:16px;line-height:1.35;}
.footer-brand em{display:block;font-style:normal;font-size:12px;color:#8d97ad;letter-spacing:.05em;}
.footer-desc{font-size:14px;line-height:1.85;color:#98a2b8;max-width:38em;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;}
.footer-col li + li{margin-top:10px;}
.footer-col a{font-size:14px;color:#a9b2c6;}
.footer-col a:hover{color:var(--amber);}
.footer-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;padding-top:22px;font-size:12.5px;color:#7e889e;}

/* ===== 响应式：1024px ===== */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;}
  .hero-panel{max-width:560px;}
  .pick-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .proof-grid{grid-template-columns:1fr;}
  .cta{grid-template-columns:1fr;}
  .cta-actions{flex-direction:row;flex-wrap:wrap;}
  .cta-actions .btn{width:auto;flex:1 1 200px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}

/* ===== 响应式：900px 移动导航 ===== */
@media (max-width:900px){
  .nav-toggle{display:grid;place-items:center;width:44px;height:44px;border-radius:13px;border:1px solid var(--line);background:#fff;color:var(--ink);margin-left:auto;box-shadow:var(--shadow-sm);transition:background .2s,color .2s;}
  .nav-toggle:hover{background:var(--amber-soft);color:var(--amber-deep);}
  .main-nav{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:6px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-lg);padding:14px;margin-top:6px;z-index:90;}
  .main-nav.is-open{display:flex;}
  .main-nav a{padding:12px 14px;border-radius:12px;}
  .main-nav a.is-active{background:var(--ink);color:#fff;}
  .nav-cta{display:none;}
  .topbar-links a:not(.topbar-cta){display:none;}
}

/* ===== 响应式：768px ===== */
@media (max-width:768px){
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));}
  .scene-grid{grid-template-columns:1fr;}
  .proof-stats{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .brand-text strong{font-size:15.5px;}
}

/* ===== 响应式：520px ===== */
@media (max-width:520px){
  .wrap{padding:0 16px;}
  .pick-grid{grid-template-columns:1fr;}
  .feature-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .hero-title{font-size:27px;}
  .hero-panel{padding:20px 16px 16px;}
  .brand-mark{width:40px;height:40px;font-size:18px;border-radius:12px;}
  .brand-text em{display:none;}
  .pick-card{padding:22px 18px 18px;}
  .cta{padding:28px 20px;}
  .faq-item{padding:0 18px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}

/* roulang page: category3 */
:root{
  --ink:#12162b;
  --ink-2:#2c3350;
  --muted:#5d6683;
  --brand:#1b2450;
  --brand-2:#25326b;
  --accent:#ff9b2f;
  --accent-deep:#e8791a;
  --accent-soft:#fff2e0;
  --bg:#f5f6fb;
  --surface:#ffffff;
  --line:#e3e7f2;
  --line-strong:#cfd6e8;
  --ok:#1f9d76;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow-sm:0 2px 10px rgba(18,22,43,.05);
  --shadow:0 14px 34px rgba(18,22,43,.09);
  --shadow-lg:0 26px 60px rgba(18,22,43,.16);
  --space:clamp(56px,7vw,92px);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-2);text-decoration:none;transition:color .2s ease,opacity .2s ease;}
a:hover{color:var(--accent-deep);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0 0 .5em;color:var(--ink);font-weight:800;letter-spacing:-.01em;line-height:1.28;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
a:focus-visible,button:focus-visible,summary:focus-visible,.btn:focus-visible{
  outline:3px solid rgba(255,155,47,.75);
  outline-offset:3px;
  border-radius:8px;
}
::selection{background:var(--accent);color:#1a1206;}

.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 22px;}

/* ---------- 顶部信息条 ---------- */
.topbar{
  background:linear-gradient(90deg,#151b3d 0%,#1f2a5e 52%,#2a3572 100%);
  color:#dfe4f6;
  font-size:13.5px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:18px;min-height:42px;flex-wrap:wrap;
}
.topbar-note{display:flex;align-items:center;gap:9px;margin:0;font-size:13.5px;color:#c9d1f0;letter-spacing:.01em;}
.topbar-note .dot{
  width:8px;height:8px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 0 4px rgba(255,155,47,.18);
  animation:pulse 2.6s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 4px rgba(255,155,47,.18);}
  50%{box-shadow:0 0 0 7px rgba(255,155,47,.05);}
}
.topbar-links{display:flex;align-items:center;gap:20px;}
.topbar-links a{color:#c9d1f0;font-size:13.5px;}
.topbar-links a:hover{color:#fff;}
.topbar-cta{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 14px;border-radius:999px;
  background:rgba(255,155,47,.16);
  border:1px solid rgba(255,155,47,.42);
  color:#ffcb8a !important;font-weight:600;
}
.topbar-cta:hover{background:rgba(255,155,47,.3);color:#fff !important;}

/* ---------- 主导航 ---------- */
.site-header{position:relative;z-index:60;}
.nav-bar{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  box-shadow:0 6px 22px rgba(18,22,43,.05);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:22px;min-height:76px;
}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:44px;height:44px;border-radius:13px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--accent) 0%,var(--accent-deep) 100%);
  color:#1a1206;font-weight:900;font-size:20px;
  box-shadow:0 8px 18px rgba(232,121,26,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{font-size:16.5px;color:var(--ink);font-weight:800;letter-spacing:-.01em;}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.08em;}
.brand:hover .brand-text strong{color:var(--brand-2);}
.main-nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap;}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:9px 14px;
  border-radius:10px;
  font-size:14.5px;font-weight:600;color:var(--ink-2);
  transition:background .2s ease,color .2s ease,transform .2s ease;
}
.main-nav a:hover{background:#f0f2fa;color:var(--brand-2);transform:translateY(-1px);}
.main-nav a.is-active{color:var(--brand);background:var(--accent-soft);}
.main-nav a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;
  border-radius:2px;background:var(--accent);
}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;
  background:#f2f4fb;border:1px solid var(--line-strong);
  color:var(--brand);font-size:17px;cursor:pointer;
  transition:background .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:#e9edf9;border-color:#b9c2dd;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:999px;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent) 0%,var(--accent-deep) 100%);
  color:#1a1206;
  box-shadow:0 12px 26px rgba(232,121,26,.30);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(232,121,26,.40);color:#1a1206;}
.btn-primary:active{transform:translateY(0);box-shadow:0 8px 18px rgba(232,121,26,.30);}
.btn-ghost{
  background:rgba(255,255,255,.07);
  color:#eef1fb;border-color:rgba(255,255,255,.28);
}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.5);transform:translateY(-2px);}
.btn-outline{
  background:#fff;color:var(--brand);border-color:var(--line-strong);
  box-shadow:var(--shadow-sm);
}
.btn-outline:hover{border-color:var(--accent);color:var(--accent-deep);transform:translateY(-2px);box-shadow:var(--shadow);}
.btn-sm{padding:9px 18px;font-size:13.5px;}
.nav-cta{flex-shrink:0;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(1100px 520px at 82% -12%,rgba(255,155,47,.34),transparent 62%),
    radial-gradient(760px 460px at 4% 110%,rgba(96,124,255,.30),transparent 66%),
    linear-gradient(150deg,#131937 0%,#1b2450 48%,#232f68 100%);
  color:#e8ecfb;
  padding:clamp(52px,7vw,92px) 0 clamp(48px,6vw,78px);
}
.hero::after{
  content:"";position:absolute;inset:auto -12% -58% -12%;height:60%;
  background:radial-gradient(closest-side,rgba(255,155,47,.16),transparent 72%);
  pointer-events:none;
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.12fr .88fr;gap:clamp(28px,4vw,56px);
  align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  padding:6px 15px;border-radius:999px;
  background:rgba(255,155,47,.14);
  border:1px solid rgba(255,155,47,.40);
  color:#ffc584;font-size:13px;font-weight:700;letter-spacing:.06em;
  margin-bottom:20px;
}
.hero h1{
  color:#fff;font-size:clamp(30px,4.4vw,50px);
  line-height:1.22;letter-spacing:-.02em;margin-bottom:18px;
}
.hero h1 .hl{
  background:linear-gradient(100deg,#ffcb8a 0%,var(--accent) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{
  font-size:clamp(15px,1.35vw,17px);
  color:#c3cbe8;max-width:56ch;margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:#a9b3d8;}
.hero-meta span{display:inline-flex;align-items:center;gap:8px;}
.hero-meta i{color:var(--accent);}

.hero-panel{
  position:relative;
  background:rgba(255,255,255,.055);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-lg);
  padding:26px 24px;
  box-shadow:var(--shadow-lg);
  backdrop-filter:blur(4px);
}
.hero-panel h2{
  color:#fff;font-size:16px;letter-spacing:.02em;margin-bottom:6px;font-weight:800;
}
.hero-panel .panel-sub{font-size:13px;color:#9faaD3;color:#9faad3;margin-bottom:20px;}
.panel-row{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:13px 0;border-bottom:1px dashed rgba(255,255,255,.16);
  font-size:14px;
}
.panel-row:last-child{border-bottom:0;padding-bottom:4px;}
.panel-row span{color:#aab4d8;}
.panel-row strong{color:#fff;font-weight:700;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:700;padding:3px 11px;border-radius:999px;
  background:rgba(31,157,118,.18);color:#7de0bb;border:1px solid rgba(31,157,118,.42);
}
.tag-warm{background:var(--accent-soft);color:var(--accent-deep);border-color:rgba(232,121,26,.32);}

/* ---------- 通用板块 ---------- */
.section{padding:var(--space) 0;}
.section-alt{background:#fff;}
.sec-head{max-width:760px;margin-bottom:clamp(30px,4vw,48px);}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.sec-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent-deep);margin-bottom:14px;
}
.sec-label::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent);}
.sec-head h2{font-size:clamp(24px,2.9vw,36px);margin-bottom:14px;letter-spacing:-.02em;}
.sec-head p{color:var(--muted);font-size:15.5px;margin:0;}

.grid{display:grid;gap:22px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}

.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 24px;
  box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  height:100%;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d7def0;}
.card .ico{
  width:48px;height:48px;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:19px;color:var(--accent-deep);
  background:var(--accent-soft);
  margin-bottom:16px;
}
.card h3{font-size:18px;margin-bottom:10px;}
.card p{color:var(--muted);font-size:14.7px;margin:0;}
.card ul{margin-top:14px;}
.card ul li{
  position:relative;padding-left:20px;margin-bottom:8px;
  font-size:14.4px;color:var(--ink-2);
}
.card ul li::before{
  content:"";position:absolute;left:2px;top:.62em;
  width:7px;height:7px;border-radius:50%;
  background:var(--accent);opacity:.85;
}

/* ---------- 清晰度对照 ---------- */
.quality-wrap{
  display:grid;grid-template-columns:.95fr 1.05fr;
  gap:clamp(26px,4vw,52px);align-items:start;
}
.quality-note{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:clamp(24px,3vw,34px);box-shadow:var(--shadow-sm);
}
.quality-note h3{font-size:20px;margin-bottom:12px;}
.quality-note p{color:var(--muted);font-size:15px;}
.quality-note .divider{height:1px;background:var(--line);margin:22px 0;}
.mini-facts{display:flex;flex-wrap:wrap;gap:12px;}
.mini-fact{
  flex:1 1 130px;
  background:#f7f9ff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:14px 16px;
}
.mini-fact strong{display:block;font-size:19px;color:var(--brand);line-height:1.3;}
.mini-fact span{font-size:12.5px;color:var(--muted);}

.q-list{display:flex;flex-direction:column;gap:14px;}
.q-item{
  display:grid;grid-template-columns:56px 1fr auto;
  align-items:center;gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;box-shadow:var(--shadow-sm);
  transition:border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.q-item:hover{border-color:#d7def0;box-shadow:var(--shadow);transform:translateX(3px);}
.q-badge{
  width:56px;height:56px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,#eef2ff,#dfe6fb);
  color:var(--brand);font-weight:800;font-size:14px;letter-spacing:.02em;
}
.q-item h4{margin:0 0 4px;font-size:16px;}
.q-item p{margin:0;color:var(--muted);font-size:14px;}
.q-item .q-tip{
  font-size:12.5px;font-weight:700;color:var(--ok);
  background:rgba(31,157,118,.10);border:1px solid rgba(31,157,118,.26);
  padding:5px 12px;border-radius:999px;white-space:nowrap;
}

/* ---------- 流程 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step;}
.step{
  position:relative;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 22px 24px;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,box-shadow .25s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.step-num{
  width:36px;height:36px;border-radius:11px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand);color:#fff;font-weight:800;font-size:15px;
  margin-bottom:16px;
}
.step h3{font-size:16.5px;margin-bottom:8px;}
.step p{font-size:14.2px;color:var(--muted);margin:0;}
.step::after{
  content:"\f061";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:-16px;top:50%;transform:translateY(-50%);
  color:#c7cfe6;font-size:13px;
}
.step:last-child::after{display:none;}

/* ---------- 观众反馈 ---------- */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.quote{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;justify-content:space-between;
  transition:transform .25s ease,box-shadow .25s ease;
}
.quote:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.quote .stars{color:var(--accent);font-size:13px;letter-spacing:2px;margin-bottom:12px;}
.quote p{font-size:14.8px;color:var(--ink-2);margin-bottom:20px;}
.quote-author{display:flex;align-items:center;gap:11px;}
.avatar{
  width:38px;height:38px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--accent-soft);color:var(--accent-deep);font-weight:800;font-size:14px;
}
.quote-author strong{display:block;font-size:14px;line-height:1.4;}
.quote-author span{font-size:12.5px;color:var(--muted);}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:#cfd9f2;box-shadow:var(--shadow);}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:19px 22px;font-weight:700;font-size:16px;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-2);}
.faq-item summary .plus{
  flex-shrink:0;width:28px;height:28px;border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  background:#f1f4fc;color:var(--brand);font-size:12px;
  transition:transform .25s ease,background .25s ease,color .25s ease;
}
.faq-item[open] summary .plus{transform:rotate(45deg);background:var(--accent);color:#1a1206;}
.faq-body{padding:0 22px 20px;color:var(--muted);font-size:14.8px;}
.faq-body p:last-child{margin-bottom:0;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:
    radial-gradient(760px 380px at 88% 8%,rgba(255,155,47,.30),transparent 62%),
    linear-gradient(150deg,#161d40 0%,#222e66 100%);
  border-radius:var(--radius-lg);
  padding:clamp(34px,5vw,60px);
  color:#e8ecfb;
  box-shadow:var(--shadow-lg);
  display:grid;grid-template-columns:1.25fr .75fr;gap:32px;align-items:center;
}
.cta-band h2{color:#fff;font-size:clamp(23px,2.7vw,33px);margin-bottom:14px;letter-spacing:-.02em;}
.cta-band p{color:#c1cae8;font-size:15.4px;margin-bottom:24px;max-width:56ch;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-side{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius);
  padding:24px;
}
.cta-side h3{color:#fff;font-size:15.5px;margin-bottom:14px;}
.cta-side ul li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;color:#c3cbe8;margin-bottom:11px;
}
.cta-side ul li:last-child{margin-bottom:0;}
.cta-side i{color:var(--accent);margin-top:.34em;font-size:13px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:#11162e;color:#a9b2cf;
  padding:clamp(44px,6vw,70px) 0 0;
  margin-top:var(--space);
  border-top:3px solid var(--accent);
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:clamp(26px,4vw,52px);
  padding-bottom:38px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{width:42px;height:42px;font-size:19px;}
.footer-brand strong{display:block;color:#fff;font-size:16px;line-height:1.35;}
.footer-brand em{font-style:normal;font-size:11.5px;color:#8590b5;letter-spacing:.08em;}
.footer-desc{font-size:14.2px;color:#929cc0;line-height:1.85;margin:0;max-width:46ch;}
.footer-col h4{color:#fff;font-size:14.5px;margin-bottom:16px;letter-spacing:.03em;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul li a{color:#9aa4c7;font-size:14px;transition:color .2s ease,padding-left .2s ease;}
.footer-col ul li a:hover{color:var(--accent);padding-left:4px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:20px 0 26px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:12.8px;color:#7d87ab;
}
.footer-bottom p{margin:0;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .quote-grid{grid-template-columns:1fr 1fr;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .step::after{display:none;}
  .quality-wrap{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-grid > div:first-child{grid-column:1 / -1;}
}
@media screen and (max-width:900px){
  .nav-toggle{display:inline-flex;}
  .nav-inner{flex-wrap:wrap;row-gap:14px;padding-top:7px;padding-bottom:7px;}
  .main-nav{
    display:none;width:100%;flex-direction:column;align-items:stretch;
    gap:4px;padding:10px 0 14px;border-top:1px solid var(--line);
  }
  .main-nav.is-open{display:flex;}
  .main-nav a{padding:12px 14px;font-size:15px;}
  .main-nav a.is-active::after{left:14px;right:auto;width:26px;}
  .nav-cta{display:none;}
  .topbar-links a:not(.topbar-cta){display:none;}
}
@media screen and (max-width:768px){
  body{font-size:15.5px;}
  .hero{padding-top:44px;}
  .hero h1{font-size:clamp(26px,7vw,34px);}
  .grid-3,.grid-2,.grid-4,.quote-grid,.steps{grid-template-columns:1fr;}
  .q-item{grid-template-columns:48px 1fr;row-gap:10px;}
  .q-badge{width:48px;height:48px;}
  .q-item .q-tip{grid-column:2;justify-self:start;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .topbar-inner{min-height:auto;padding:9px 0;font-size:12.5px;}
  .topbar-note{font-size:12.5px;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-body{padding:0 18px 18px;}
}
@media screen and (max-width:520px){
  .wrap{padding:0 16px;}
  .brand-text strong{font-size:14.5px;}
  .brand-text em{font-size:10.5px;}
  .brand-mark{width:38px;height:38px;border-radius:11px;font-size:17px;}
  .hero-actions .btn,.cta-actions .btn{width:100%;}
  .card{padding:22px 18px;}
  .section{padding:48px 0;}
  .cta-band{padding:26px 20px;}
}

/* roulang page: category4 */
:root{
  --ink:#0f1424;
  --ink-soft:#1a2140;
  --gold:#f5b301;
  --gold-deep:#dd9a00;
  --gold-soft:#fff4d6;
  --paper:#f5f7fc;
  --card:#ffffff;
  --text:#1b2233;
  --muted:#5e6780;
  --line:#e4e8f2;
  --night:#0b0f1c;
  --radius-lg:22px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 2px 8px rgba(16,20,38,.06);
  --shadow:0 12px 30px rgba(16,20,38,.10);
  --shadow-lg:0 24px 60px rgba(16,20,38,.18);
  --gap:24px;
  --wrap:1180px;
  --t:.24s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--ink);text-decoration:none;transition:color var(--t),background var(--t),border-color var(--t);}
a:hover,a:focus{color:var(--gold-deep);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;cursor:pointer;}
:focus-visible{outline:3px solid rgba(245,179,1,.55);outline-offset:2px;border-radius:6px;}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 22px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 26px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:transform var(--t),box-shadow var(--t),background var(--t),color var(--t),border-color var(--t);
  white-space:nowrap;
}
.btn i{font-size:13px;}
.btn-primary{
  background:linear-gradient(135deg,var(--gold) 0%,var(--gold-deep) 100%);
  color:#20180a;box-shadow:0 10px 24px rgba(245,179,1,.34);
}
.btn-primary:hover,.btn-primary:focus{
  color:#20180a;transform:translateY(-2px);
  box-shadow:0 16px 34px rgba(245,179,1,.44);
}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:rgba(255,255,255,.08);color:#fff;
  border-color:rgba(255,255,255,.34);
}
.btn-ghost:hover,.btn-ghost:focus{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.6);}
.btn-outline{
  background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-sm);
}
.btn-outline:hover,.btn-outline:focus{border-color:var(--gold);color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow);}
.btn-sm{padding:10px 18px;font-size:13.5px;}
.btn-block{width:100%;justify-content:center;}

/* ---------- topbar ---------- */
.site-header{position:relative;z-index:60;}
.topbar{background:var(--night);color:#c8cfe3;font-size:13px;border-bottom:1px solid rgba(255,255,255,.07);}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:42px;flex-wrap:wrap;}
.topbar-note{display:flex;align-items:center;gap:9px;color:#cfd6e9;font-size:12.5px;letter-spacing:.2px;}
.dot{width:7px;height:7px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 4px rgba(245,179,1,.18);animation:pulse 2.4s infinite;}
@keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(245,179,1,.18);}50%{box-shadow:0 0 0 8px rgba(245,179,1,.05);}}
.topbar-links{display:flex;align-items:center;gap:20px;}
.topbar-links a{color:#c8cfe3;font-size:12.5px;}
.topbar-links a:hover,.topbar-links a:focus{color:var(--gold);}
.topbar-cta{
  padding:5px 14px;border-radius:999px;background:rgba(245,179,1,.16);
  color:var(--gold)!important;border:1px solid rgba(245,179,1,.4);
}
.topbar-cta:hover{background:rgba(245,179,1,.28);}

/* ---------- nav ---------- */
.nav-bar{background:rgba(15,20,36,.96);backdrop-filter:blur(14px);border-bottom:1px solid rgba(255,255,255,.08);position:sticky;top:0;z-index:80;}
.nav-inner{display:flex;align-items:center;gap:22px;min-height:74px;}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--gold) 0%,var(--gold-deep) 100%);
  color:#20180a;font-weight:800;font-size:20px;letter-spacing:0;
  box-shadow:0 8px 20px rgba(245,179,1,.3);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text strong{color:#fff;font-size:16.5px;font-weight:700;letter-spacing:.3px;}
.brand-text em{color:#9aa4c0;font-style:normal;font-size:11.5px;letter-spacing:1px;}
.main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;flex-wrap:wrap;}
.main-nav a{
  position:relative;color:#c3cbe1;font-size:14px;padding:9px 13px;border-radius:9px;
  transition:color var(--t),background var(--t);
}
.main-nav a:hover,.main-nav a:focus{color:#fff;background:rgba(255,255,255,.08);}
.main-nav a.is-active{color:var(--gold);background:rgba(245,179,1,.13);}
.main-nav a.is-active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;
  background:var(--gold);
}
.nav-cta{flex-shrink:0;}
.nav-toggle{
  display:none;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);
  color:#fff;width:42px;height:42px;border-radius:11px;font-size:16px;margin-left:auto;
}
.nav-toggle:hover{background:rgba(255,255,255,.16);}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:radial-gradient(1100px 520px at 82% -10%,rgba(245,179,1,.22),transparent 62%),
             radial-gradient(760px 440px at 6% 110%,rgba(88,110,255,.28),transparent 60%),
             linear-gradient(160deg,#0b0f1c 0%,#141b33 58%,#0e1striped 100%),
             linear-gradient(160deg,#0b0f1c 0%,#151c34 100%);
  padding:74px 0 84px;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:56px 56px;mask-image:radial-gradient(70% 70% at 50% 40%,#000 20%,transparent 100%);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:999px;
  background:rgba(245,179,1,.14);border:1px solid rgba(245,179,1,.36);
  color:var(--gold);font-size:12.5px;letter-spacing:1.4px;margin-bottom:22px;
}
.hero-title{font-size:clamp(30px,4.1vw,48px);line-height:1.22;font-weight:800;letter-spacing:.4px;margin-bottom:20px;}
.hero-title span{color:var(--gold);}
.hero-sub{color:#b9c2da;font-size:16px;line-height:1.9;max-width:620px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:8px 15px;border-radius:999px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
  color:#cdd5e8;font-size:12.8px;
}
.chip i{color:var(--gold);font-size:12px;}

/* phone mock */
.phone-wrap{display:flex;justify-content:center;}
.phone{
  width:296px;border-radius:36px;padding:12px;
  background:linear-gradient(165deg,#2a3352,#141a2e 62%);
  border:1px solid rgba(255,255,255,.14);
  box-shadow:var(--shadow-lg),0 0 0 10px rgba(255,255,255,.03);
}
.phone-screen{
  border-radius:26px;overflow:hidden;background:#0d1220;
  border:1px solid rgba(255,255,255,.08);
}
.phone-top{display:flex;align-items:center;justify-content:space-between;padding:12px 15px 8px;color:#8e98b6;font-size:11px;letter-spacing:.5px;}
.phone-top .net{display:flex;gap:6px;align-items:center;}
.phone-thumb{
  position:relative;height:158px;
  background:radial-gradient(220px 130px at 70% 20%,rgba(245,179,1,.4),transparent 66%),
             linear-gradient(150deg,#1d2647,#0b1120);
  display:flex;align-items:flex-end;padding:14px;
}
.phone-thumb::before{
  content:"夜";position:absolute;right:14px;top:8px;font-size:74px;font-weight:800;
  color:rgba(255,255,255,.07);line-height:1;
}
.phone-badge{
  position:absolute;left:14px;top:14px;background:rgba(245,179,1,.92);color:#20180a;
  font-size:11px;font-weight:700;padding:4px 10px;border-radius:6px;letter-spacing:.5px;
}
.phone-play{
  width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.92);color:#1b2233;
  display:grid;place-items:center;font-size:15px;margin:0 auto 14px;
  box-shadow:0 8px 22px rgba(0,0,0,.4);
}
.phone-ep{position:relative;z-index:2;color:#fff;}
.phone-ep strong{display:block;font-size:14.5px;letter-spacing:.3px;}
.phone-ep span{font-size:11.5px;color:#9aa4c0;}
.progress{height:4px;border-radius:4px;background:rgba(255,255,255,.16);margin:12px 15px 0;overflow:hidden;}
.progress i{display:block;height:100%;width:62%;background:linear-gradient(90deg,var(--gold),var(--gold-deep));border-radius:4px;}
.phone-list{padding:12px 15px 16px;}
.phone-list li{
  display:flex;align-items:center;gap:11px;padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.09);
  font-size:12.4px;color:#bcc5dc;
}
.phone-list li:last-child{border-bottom:0;}
.phone-list b{
  width:26px;height:26px;border-radius:8px;display:grid;place-items:center;flex-shrink:0;
  background:rgba(245,179,1,.15);color:var(--gold);font-size:11px;font-weight:700;
}
.phone-list li em{margin-left:auto;font-style:normal;color:#78829c;font-size:11px;}

/* ---------- stats ---------- */
.stats-band{background:#fff;border-bottom:1px solid var(--line);}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:0;}
.stat{padding:30px 26px;border-right:1px solid var(--line);}
.stat:last-child{border-right:0;}
.stat-num{font-size:30px;font-weight:800;color:var(--ink);line-height:1.1;letter-spacing:.5px;}
.stat-num small{font-size:14px;font-weight:600;color:var(--gold-deep);margin-left:3px;}
.stat-label{color:var(--muted);font-size:13.5px;margin-top:7px;}

/* ---------- sections ---------- */
.section{padding:82px 0;}
.section-alt{background:#fff;}
.section-head{max-width:720px;margin:0 auto 48px;text-align:center;}
.section-tag{
  display:inline-block;padding:6px 14px;border-radius:999px;background:var(--gold-soft);
  color:#8a6100;font-size:12.5px;letter-spacing:1.4px;margin-bottom:16px;font-weight:600;
}
.section-title{font-size:clamp(23px,2.7vw,32px);font-weight:800;line-height:1.35;color:var(--ink);letter-spacing:.3px;}
.section-sub{color:var(--muted);font-size:15px;line-height:1.9;margin-top:14px;}

.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:30px 28px;transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  box-shadow:var(--shadow-sm);position:relative;overflow:hidden;
}
.card::before{
  content:"";position:absolute;left:0;top:0;height:3px;width:0;background:var(--gold);transition:width var(--t);
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#f3d99a;}
.card:hover::before{width:100%;}
.card-icon{
  width:50px;height:50px;border-radius:14px;display:grid;place-items:center;
  background:var(--gold-soft);color:var(--gold-deep);font-size:19px;margin-bottom:20px;
}
.card-title{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:11px;}
.card-text{color:var(--muted);font-size:14.5px;line-height:1.85;}
.card-tag{
  display:inline-block;margin-top:18px;font-size:12px;color:#8a6100;
  background:var(--gold-soft);padding:4px 11px;border-radius:999px;
}

/* scenario grid */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.scene{
  display:flex;gap:15px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;transition:border-color var(--t),box-shadow var(--t),transform var(--t);
}
.scene:hover{border-color:#f0d493;box-shadow:var(--shadow-sm);transform:translateY(-3px);}
.scene-ico{
  width:42px;height:42px;border-radius:12px;flex-shrink:0;display:grid;place-items:center;
  background:#eef2ff;color:#3f52b5;font-size:16px;
}
.scene h3{font-size:15.5px;font-weight:700;color:var(--ink);margin-bottom:5px;}
.scene p{font-size:13.5px;color:var(--muted);line-height:1.75;}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step;}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:34px 28px 30px;box-shadow:var(--shadow-sm);
}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:46px;height:46px;border-radius:13px;
  background:linear-gradient(140deg,var(--ink-soft),var(--ink));color:var(--gold);
  font-size:15px;font-weight:800;letter-spacing:.5px;margin-bottom:18px;
}
.step h3{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:10px;}
.step p{color:var(--muted);font-size:14.3px;line-height:1.85;}
.step-line{
  height:2px;background:linear-gradient(90deg,var(--gold),rgba(245,179,1,0));border-radius:2px;margin-top:20px;
}

/* quality cards */
.quality{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.q-card{
  background:linear-gradient(170deg,#ffffff,#f9fafd);
  border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;
  transition:transform var(--t),box-shadow var(--t);
}
.q-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.q-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;}
.q-name{font-size:16px;font-weight:700;color:var(--ink);}
.q-badge{font-size:11.5px;padding:3px 10px;border-radius:999px;background:#eef2ff;color:#3f52b5;font-weight:600;}
.q-badge.hot{background:var(--gold-soft);color:#8a6100;}
.q-value{font-size:27px;font-weight:800;color:var(--ink);letter-spacing:.4px;}
.q-value small{font-size:13px;color:var(--muted);font-weight:600;margin-left:4px;}
.q-desc{color:var(--muted);font-size:13.6px;line-height:1.8;margin-top:12px;}
.q-bar{height:7px;border-radius:6px;background:#eaeef7;margin-top:18px;overflow:hidden;}
.q-bar i{display:block;height:100%;border-radius:6px;background:linear-gradient(90deg,var(--gold),var(--gold-deep));}
.q-bar.deep i{background:linear-gradient(90deg,#4d61c9,#2f3f9e);}
.q-bar.soft i{background:linear-gradient(90deg,#6fb3a4,#3f8f7f);}

/* quotes */
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap);}
.quote{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;
  box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:16px;
  transition:transform var(--t),box-shadow var(--t);
}
.quote:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
.quote .fa-quote-left{color:var(--gold);font-size:19px;}
.quote p{color:var(--text);font-size:14.5px;line-height:1.9;}
.quote-author{display:flex;align-items:center;gap:11px;margin-top:auto;padding-top:16px;border-top:1px dashed var(--line);}
.avatar{
  width:38px;height:38px;border-radius:50%;display:grid;place-items:center;
  background:var(--ink-soft);color:var(--gold);font-size:13px;font-weight:700;
}
.quote-author strong{display:block;font-size:13.6px;color:var(--ink);}
.quote-author span{font-size:12px;color:var(--muted);}

/* faq */
.faq{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:0 24px;transition:border-color var(--t),box-shadow var(--t);
}
.faq-item[open]{border-color:#f0d493;box-shadow:var(--shadow-sm);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 0;font-size:15.8px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"\002B";margin-left:auto;color:var(--gold-deep);font-size:19px;font-weight:400;transition:transform var(--t);
}
.faq-item[open] summary::after{content:"\2212";}
.faq-item summary:hover{color:var(--gold-deep);}
.faq-body{padding:0 0 22px;color:var(--muted);font-size:14.5px;line-height:1.9;border-top:1px dashed var(--line);padding-top:16px;}

/* cta */
.cta-band{
  position:relative;overflow:hidden;color:#fff;
  background:radial-gradient(760px 340px at 82% 0%,rgba(245,179,1,.28),transparent 62%),
             linear-gradient(140deg,#121830,#0b0f1c 78%);
  padding:74px 0;
}
.cta-inner{display:grid;grid-template-columns:1.4fr .6fr;gap:40px;align-items:center;position:relative;z-index:2;}
.cta-band h2{font-size:clamp(23px,2.8vw,32px);font-weight:800;line-height:1.35;margin-bottom:14px;}
.cta-band p{color:#b6bfd7;font-size:15px;line-height:1.9;max-width:640px;}
.cta-actions{display:flex;flex-direction:column;gap:14px;align-items:stretch;}
.cta-actions small{color:#8d97b3;font-size:12.5px;text-align:center;}

/* footer */
.site-footer{background:#080b15;color:#98a2bd;padding:66px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:46px;padding-bottom:44px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand strong{display:block;color:#fff;font-size:15.5px;letter-spacing:.3px;}
.footer-brand em{font-style:normal;font-size:11.5px;color:#7d88a6;letter-spacing:1.2px;}
.footer-desc{color:#8c97b4;font-size:13.6px;line-height:1.95;max-width:420px;}
.footer-col h4{color:#fff;font-size:14.5px;margin-bottom:16px;letter-spacing:.6px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{color:#98a2bd;font-size:13.6px;}
.footer-col a:hover,.footer-col a:focus{color:var(--gold);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  color:#6f7a97;font-size:12.6px;
}

/* responsive */
@media (max-width:1024px){
  .hero{padding:58px 0 66px;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-sub{max-width:none;}
  .phone-wrap{order:-1;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(2){border-right:0;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--line);}
  .cards,.scene-grid,.steps,.quality,.quotes{grid-template-columns:repeat(2,1fr);}
  .cta-inner{grid-template-columns:1fr;}
  .cta-actions{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}
  .cta-actions small{width:100%;text-align:left;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .footer-desc{max-width:none;}
  .main-nav{gap:2px;}
  .main-nav a{font-size:13.2px;padding:8px 10px;}
}
@media (max-width:860px){
  .nav-toggle{display:block;}
  .nav-cta{display:none;}
  .nav-inner{flex-wrap:wrap;padding-top:12px;padding-bottom:12px;gap:12px;}
  .main-nav{
    display:none;width:100%;flex-direction:column;align-items:stretch;gap:4px;
    padding:12px 0 4px;margin-left:0;border-top:1px solid rgba(255,255,255,.1);
  }
  .main-nav.is-open{display:flex;}
  .main-nav a{padding:12px 14px;font-size:14.5px;border-radius:10px;}
  .main-nav a.is-active::after{display:none;}
  .topbar-links{gap:14px;}
  .topbar-note{font-size:12px;}
}
@media (max-width:768px){
  .section{padding:58px 0;}
  .section-head{margin-bottom:34px;}
  .cards,.scene-grid,.steps,.quality,.quotes{grid-template-columns:1fr;}
  .hero-title{font-size:29px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .cta-band{padding:56px 0;}
  .stat{padding:24px 20px;}
  .stat-num{font-size:25px;}
}
@media (max-width:520px){
  .wrap{padding:0 16px;}
  .topbar-inner{min-height:auto;padding:9px 0;flex-direction:column;align-items:flex-start;gap:8px;}
  .topbar-links{gap:12px;flex-wrap:wrap;}
  .hero{padding:44px 0 52px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{justify-content:center;}
  .phone{width:100%;max-width:300px;}
  .stats{grid-template-columns:1fr;}
  .stat{border-right:0;border-bottom:1px solid var(--line);}
  .stat:last-child{border-bottom:0;}
  .card,.step,.q-card,.quote{padding:24px 20px;}
  .faq-item{padding:0 18px;}
  .footer-bottom{flex-direction:column;}
  .btn{padding:12px 22px;font-size:14.5px;}
}