/* roulang page: index */
:root{
  --blue:#16457B;
  --blue-deep:#0E2F57;
  --clay:#B4643C;
  --neon:#4FD1C5;
  --bg:#F7F9FC;
  --white:#FFFFFF;
  --band:#EEF3FA;
  --dark:#0B1220;
  --text:#0F1B2D;
  --muted:#5A6A80;
  --weak:#8A97A8;
  --border:#DCE4EF;
  --border-strong:#C3D1E4;
  --line:#E4EBF4;
  --ok:#2E7D5B;
  --radius:14px;
  --radius-lg:20px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(22,69,123,.06);
  --shadow-2:0 6px 18px rgba(22,69,123,.08);
  --shadow-3:0 14px 32px rgba(22,69,123,.14);
  --nav-h:68px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
.mk-body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
.mk-body img{max-width:100%;display:block;border:0;}
.mk-body a{color:inherit;text-decoration:none;}
.mk-body button{font-family:inherit;cursor:pointer;}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:40px;padding-right:40px;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:var(--dark);}
.site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,var(--neon) 0%,rgba(79,209,197,.35) 38%,rgba(79,209,197,0) 78%);}
.nav-inner{height:var(--nav-h);display:flex;align-items:center;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:19px;letter-spacing:-.2px;flex-shrink:0;}
.brand-mark{width:32px;height:32px;border-radius:9px;display:grid;place-items:center;font-size:12px;font-weight:700;letter-spacing:.6px;color:var(--neon);background:linear-gradient(135deg,#16457B 0%,#0E2F57 100%);border:1px solid rgba(79,209,197,.45);}
.brand-suffix{color:#A9B6C8;font-weight:400;font-size:13px;margin-left:8px;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{position:relative;padding:10px 13px;font-size:15px;color:#C6D2E2;border-radius:8px;transition:color .2s ease,background .2s ease;}
.nav-link::after{content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;background:var(--neon);transform:scaleX(0);transform-origin:left center;transition:transform .22s ease;}
.nav-link:hover{color:#fff;}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:#fff;}
.nav-link.active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(79,209,197,.55);}
.nav-link:focus-visible{outline:2px solid var(--neon);outline-offset:2px;}
.nav-cta{margin-left:14px;display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:0 20px;border-radius:999px;background:var(--neon);color:#06231F;font-size:14px;font-weight:600;transition:box-shadow .2s ease,filter .2s ease,transform .2s ease;}
.nav-cta:hover{filter:brightness(1.08);box-shadow:0 0 16px rgba(79,209,197,.6);transform:translateY(-1px);}
.nav-cta:focus-visible{outline:2px solid #fff;outline-offset:2px;}
.nav-toggle{display:none;margin-left:auto;width:44px;height:44px;border:1px solid rgba(255,255,255,.16);border-radius:10px;background:transparent;position:relative;}
.nav-toggle span{position:absolute;left:12px;right:12px;height:2px;background:#E8EEF6;border-radius:2px;transition:transform .22s ease,opacity .22s ease;}
.nav-toggle span:nth-child(1){top:18px;}
.nav-toggle span:nth-child(2){top:25px;}
.nav-toggle.is-open span:nth-child(1){transform:translateY(3.5px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){transform:translateY(-3.5px) rotate(-45deg);}

/* ---------- hero ---------- */
.hero-fade{height:120px;background:linear-gradient(180deg,#0B1220 0%,#243453 34%,#8C9AB3 68%,#F7F9FC 100%);}
.hero{padding:64px 0 96px;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:500;letter-spacing:.5px;color:var(--blue);background:#E8F0FA;border-radius:999px;padding:7px 15px;}
.hero h1{font-size:44px;line-height:1.25;letter-spacing:-.5px;font-weight:700;margin:18px 0 0;color:var(--text);}
.hero-sub{max-width:520px;margin:18px 0 0;font-size:17px;line-height:1.75;color:var(--muted);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-note{margin-top:22px;font-size:12px;color:var(--weak);letter-spacing:.2px;}
.hero-media{position:relative;}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow-2);background:var(--band);}
.hero-badge{position:absolute;right:16px;bottom:16px;display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;font-size:12px;color:#E8EEF6;background:rgba(11,18,32,.86);border:1px solid rgba(79,209,197,.35);}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border-radius:var(--radius-btn);font-size:15px;font-weight:500;border:1px solid transparent;transition:background .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease,color .2s ease;}
.btn-primary{background:var(--blue);color:#fff;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--blue-deep);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--blue);border-color:var(--border-strong);}
.btn-ghost:hover{border-color:var(--blue);background:var(--band);transform:translateY(-1px);}
.btn:focus-visible{outline:2px solid var(--blue);outline-offset:2px;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--blue);}
.link-arrow span{transition:transform .2s ease;}
.link-arrow:hover span{transform:translateX(3px);}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section.alt{background:var(--band);}
.section-head{max-width:780px;}
.tag-num{display:inline-block;font-size:13px;font-weight:600;letter-spacing:.6px;color:var(--clay);}
.section-head h2{position:relative;padding-left:16px;margin:12px 0 0;font-size:30px;line-height:1.35;font-weight:600;color:var(--text);}
.section-head h2::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;background:var(--blue);}
.section-lead{margin:14px 0 0;font-size:16px;line-height:1.8;color:var(--muted);max-width:720px;}

/* ---------- pain ---------- */
.pain-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:start;margin-top:44px;}
.pain-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line);}
.pain-item{display:grid;grid-template-columns:52px 150px 1fr;gap:18px;align-items:start;padding:20px 0;border-bottom:1px solid var(--line);}
.pain-num{font-size:14px;font-weight:600;color:var(--clay);letter-spacing:.6px;padding-top:3px;}
.pain-title{margin:0;font-size:17px;font-weight:600;line-height:1.6;color:var(--text);}
.pain-desc{margin:0;font-size:14.5px;line-height:1.7;color:var(--muted);}
.pain-aside img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);box-shadow:var(--shadow-2);background:var(--band);}
.pain-note{margin-top:16px;padding:18px 20px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-1);font-size:13.5px;line-height:1.75;color:var(--muted);}

/* ---------- split blocks ---------- */
.split{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;margin-top:56px;}
.split.reverse{grid-template-columns:5fr 7fr;}
.split h3{margin:0 0 16px;font-size:22px;font-weight:600;line-height:1.45;color:var(--text);}
.split p{margin:0 0 14px;font-size:15.5px;line-height:1.8;color:var(--muted);}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow-2);background:var(--band);}
.point-list{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:10px;}
.point-list li{position:relative;padding-left:22px;font-size:15px;color:var(--text);line-height:1.7;}
.point-list li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:50%;background:var(--blue);}

/* ---------- stats ---------- */
.stats-band{background:var(--band);padding:64px 0;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:0 28px;border-left:1px solid var(--border);}
.stat:first-child{border-left:0;padding-left:0;}
.stat-num{font-size:36px;font-weight:700;line-height:1.2;color:var(--blue);letter-spacing:-.5px;}
.stat-label{margin-top:8px;font-size:13px;line-height:1.6;color:var(--muted);}
.stats-note{margin:34px 0 0;font-size:13.5px;color:var(--weak);}

/* ---------- quotes ---------- */
.quote-grid{columns:2;column-gap:24px;margin-top:44px;}
.quote-card{break-inside:avoid;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px;margin:0 0 24px;box-shadow:var(--shadow-2);transition:box-shadow .22s ease,transform .22s ease;}
.quote-card:hover{box-shadow:var(--shadow-3);transform:translateY(-2px);}
.quote-text{margin:0;font-size:19px;line-height:1.8;color:var(--text);}
.quote-meta{display:flex;align-items:center;gap:12px;margin-top:22px;font-size:13.5px;color:var(--muted);flex-wrap:wrap;}
.avatar{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:#E8F0FA;color:var(--blue);font-weight:600;font-size:14px;flex-shrink:0;}
.tag-clay{display:inline-flex;align-items:center;padding:3px 11px;border-radius:999px;font-size:12px;font-weight:500;letter-spacing:.5px;color:var(--clay);background:rgba(180,100,60,.1);}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;padding:3px 11px;border-radius:999px;font-size:12px;font-weight:500;letter-spacing:.5px;color:var(--blue);background:#E8F0FA;}

/* ---------- cms list ---------- */
.cms-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}
.cms-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;margin-top:44px;}
.cms-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-2);transition:box-shadow .22s ease,transform .22s ease;display:flex;flex-direction:column;}
.cms-card:hover{box-shadow:var(--shadow-3);transform:translateY(-2px);}
.cms-card:focus-visible{outline:2px solid var(--blue);outline-offset:2px;}
.cms-big{grid-column:span 6;grid-row:span 3;}
.cms-small{grid-column:span 6;display:grid;grid-template-columns:200px 1fr;}
.cms-thumb{overflow:hidden;background:var(--band);}
.cms-thumb img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10;transition:transform .35s ease;}
.cms-card:hover .cms-thumb img{transform:scale(1.04);}
.cms-big .cms-thumb{flex:1;min-height:250px;}
.cms-small .cms-thumb{height:100%;}
.cms-small .cms-thumb img{aspect-ratio:auto;height:100%;}
.cms-body{padding:20px 22px;display:flex;flex-direction:column;}
.cms-big .cms-body{padding:26px 28px;}
.cms-title{margin:12px 0 10px;font-size:18px;font-weight:600;line-height:1.5;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-big .cms-title{font-size:23px;line-height:1.45;}
.cms-summary{margin:0;font-size:14px;line-height:1.7;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.cms-time{margin-top:auto;padding-top:14px;font-size:12.5px;color:var(--clay);letter-spacing:.3px;}
.cms-empty{grid-column:span 12;text-align:center;padding:56px 24px;background:#fff;border:1px dashed var(--border-strong);border-radius:var(--radius);}
.cms-empty-icon{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;margin:0 auto 14px;background:var(--band);color:var(--blue);font-size:20px;font-weight:700;}
.cms-empty p{margin:0;font-size:15px;color:var(--muted);}
.cms-empty .link-arrow{margin-top:12px;}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;margin-top:44px;}
.faq-side p{font-size:15px;line-height:1.8;color:var(--muted);margin:14px 0 20px;}
.faq-panel{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-2);overflow:hidden;}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-q{width:100%;display:flex;align-items:center;gap:14px;padding:20px 24px;background:none;border:0;text-align:left;font-size:17px;font-weight:600;line-height:1.6;color:var(--text);transition:background .2s ease;}
.faq-q:hover{background:#F9FBFE;}
.faq-q:focus-visible{outline:2px solid var(--blue);outline-offset:-2px;}
.q-num{font-size:13px;font-weight:600;color:var(--clay);min-width:26px;letter-spacing:.5px;}
.q-icon{margin-left:auto;font-size:20px;line-height:1;color:var(--blue);transition:transform .25s ease;}
.faq-item.open .q-icon{transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;padding:0 24px;font-size:15px;line-height:1.85;color:var(--muted);transition:max-height .3s ease;}
.faq-item.open .faq-a{padding-bottom:20px;}

/* ---------- cta ---------- */
.cta-wrap{padding:0 0 96px;}
.cta-band{background:var(--dark);border-radius:var(--radius-lg);padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;min-height:168px;position:relative;overflow:hidden;}
.cta-band::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(79,209,197,.16) 0%,rgba(79,209,197,0) 70%);}
.cta-band h2{margin:0;font-size:28px;line-height:1.4;font-weight:600;color:#E8EEF6;letter-spacing:-.3px;}
.cta-band p{margin:10px 0 0;font-size:14.5px;line-height:1.75;color:#A9B6C8;max-width:560px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1;}
.btn-neon{background:var(--neon);color:#06231F;border-radius:999px;font-weight:600;padding:0 24px;}
.btn-neon:hover{filter:brightness(1.08);box-shadow:0 0 18px rgba(79,209,197,.55);transform:translateY(-1px);}
.btn-outline-light{background:transparent;color:#E8EEF6;border-color:rgba(232,238,246,.35);border-radius:999px;}
.btn-outline-light:hover{border-color:var(--neon);color:#fff;background:rgba(79,209,197,.08);}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:#A9B6C8;padding:64px 0 28px;position:relative;}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,rgba(79,209,197,0) 0%,var(--neon) 50%,rgba(79,209,197,0) 100%);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:18px;}
.footer-desc{margin:16px 0 0;font-size:13.5px;line-height:1.75;color:#A9B6C8;max-width:280px;}
.footer-col h3{position:relative;margin:0 0 16px;padding-left:22px;font-size:14px;font-weight:600;color:#E8EEF6;}
.footer-col h3::before{content:"";position:absolute;left:0;top:.62em;width:16px;height:2px;border-radius:2px;background:var(--neon);}
.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.footer-links a{display:inline-block;font-size:14px;color:#A9B6C8;transition:color .2s ease,transform .2s ease;}
.footer-links a:hover{color:#fff;transform:translateX(-2px);}
.footer-links a:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:4px;}
.footer-info{display:grid;gap:10px;font-size:14px;line-height:1.7;color:#A9B6C8;}
.footer-info strong{color:#E8EEF6;font-weight:500;}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:#7D8CA0;}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero h1{font-size:38px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-media{order:-1;}
  .pain-grid{grid-template-columns:1fr;gap:36px;}
  .split,.split.reverse{grid-template-columns:1fr;gap:32px;}
  .split.reverse .split-media{order:-1;}
  .faq-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .container{padding-left:24px;padding-right:24px;}
  .nav-toggle{display:block;}
  .nav-links{position:fixed;left:0;right:0;top:var(--nav-h);bottom:0;margin-left:0;background:var(--dark);flex-direction:column;align-items:stretch;gap:0;padding:12px 20px 32px;overflow-y:auto;opacity:0;transform:translateY(-10px);pointer-events:none;transition:opacity .25s ease,transform .25s ease;}
  .nav-links.open{opacity:1;transform:none;pointer-events:auto;}
  .nav-link{padding:0 16px;line-height:56px;font-size:16px;border-bottom:1px solid rgba(255,255,255,.07);border-radius:0;}
  .nav-link::after{display:none;}
  .nav-link.active{border-right:4px solid var(--neon);background:rgba(79,209,197,.07);color:#fff;}
  .nav-cta{margin:24px 0 0;width:100%;min-height:48px;font-size:15px;}
  .hero{padding:48px 0 72px;}
  .hero-fade{height:88px;}
  .section{padding:72px 0;}
  .stats-grid{grid-template-columns:1fr 1fr;gap:28px 0;}
  .stat:nth-child(odd){border-left:0;padding-left:0;}
  .quote-grid{columns:1;}
  .cms-big,.cms-small{grid-column:span 12;grid-row:auto;}
  .cms-small{grid-template-columns:180px 1fr;}
  .cta-wrap{padding-bottom:72px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px;min-height:0;}
  .cta-actions{width:100%;}
}
@media (max-width:640px){
  .container{padding-left:18px;padding-right:18px;}
  .hero-fade{height:64px;}
  .hero h1{font-size:29px;line-height:1.32;letter-spacing:-.3px;}
  .hero-sub{font-size:15.5px;}
  .section{padding:56px 0;}
  .section-head h2{font-size:23px;}
  .cta-band h2{font-size:22px;}
  .pain-item{grid-template-columns:36px 1fr;gap:10px 12px;}
  .pain-title{grid-column:2;}
  .pain-desc{grid-column:2;}
  .stats-grid{grid-template-columns:1fr;gap:0;}
  .stat{padding:18px 0;border-left:0;border-top:1px solid var(--border);}
  .stat:first-child{border-top:0;padding-top:0;}
  .stat-num{font-size:30px;}
  .cms-small{grid-template-columns:1fr;}
  .cms-small .cms-thumb img{aspect-ratio:16/10;height:auto;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .hero-actions .btn{width:100%;}
  .quote-text{font-size:17px;}
}

/* roulang page: category1 */
:root{
    --blue:#16457B;
    --blue-deep:#0E2F57;
    --clay:#B4643C;
    --neon:#4FD1C5;
    --bg:#F7F9FC;
    --card:#FFFFFF;
    --alt:#EEF3FA;
    --dark:#0B1220;
    --text:#0F1B2D;
    --muted:#5A6A80;
    --weak:#8A97A8;
    --border:#DCE4EF;
    --border-strong:#C3D1E4;
    --radius-card:14px;
    --radius-lg:20px;
    --radius-btn:10px;
    --shadow-1:0 1px 2px rgba(22,69,123,.06);
    --shadow-2:0 6px 18px rgba(22,69,123,.08);
    --shadow-3:0 14px 32px rgba(22,69,123,.14);
    --space-section:112px;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.8;
    font-weight:400;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
  ul,ol{padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:4px;}

  .container{
    width:100%;
    max-width:1200px;
    margin:0 auto;
    padding:0 40px;
  }

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:var(--dark);
    border-bottom:1px solid rgba(255,255,255,.06);
  }
  .site-header::after{
    content:"";
    display:block;
    height:1px;
    background:linear-gradient(90deg,var(--neon),rgba(79,209,197,0));
  }
  .nav-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    height:68px;
  }
  .brand{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:19px;
    font-weight:700;
    color:#FFFFFF;
    letter-spacing:-.2px;
    white-space:nowrap;
  }
  .brand-mark{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:34px;
    height:34px;
    border-radius:9px;
    background:rgba(79,209,197,.14);
    border:1px solid rgba(79,209,197,.42);
    color:var(--neon);
    font-size:13px;
    font-weight:700;
    letter-spacing:.5px;
    flex:none;
  }
  .brand-suffix{
    font-weight:400;
    font-size:13px;
    color:#A9B6C8;
    margin-left:6px;
  }
  .nav-links{
    display:flex;
    align-items:center;
    gap:8px;
  }
  .nav-link{
    position:relative;
    display:inline-flex;
    align-items:center;
    height:38px;
    padding:0 14px;
    font-size:15px;
    color:#C6D2E2;
    border-radius:8px;
    transition:color .2s ease,background .2s ease;
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:14px;
    right:14px;
    bottom:2px;
    height:2px;
    border-radius:2px;
    background:var(--neon);
    transform:scaleX(0);
    transform-origin:left center;
    transition:transform .22s ease;
  }
  .nav-link:hover{color:#FFFFFF;}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{
    color:#FFFFFF;
    font-weight:600;
  }
  .nav-link.active::after{
    transform:scaleX(1);
    box-shadow:0 0 12px rgba(79,209,197,.55);
  }
  .nav-cta{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    min-height:40px;
    padding:10px 20px;
    margin-left:10px;
    border-radius:999px;
    background:var(--neon);
    color:#06231F;
    font-size:14px;
    font-weight:600;
    transition:box-shadow .22s ease,transform .22s ease,filter .22s ease;
  }
  .nav-cta:hover{
    filter:brightness(1.08);
    box-shadow:0 0 16px rgba(79,209,197,.55);
    transform:translateY(-1px);
  }
  .nav-toggle{
    display:none;
    width:44px;
    height:44px;
    border:1px solid rgba(255,255,255,.16);
    border-radius:10px;
    background:transparent;
    cursor:pointer;
    padding:0;
  }
  .nav-toggle span{
    display:block;
    width:18px;
    height:1.5px;
    margin:4px auto;
    background:#E8EEF6;
    transition:transform .22s ease,opacity .22s ease;
  }
  .nav-toggle[aria-expanded="true"] span:first-child{transform:translateY(2.75px) rotate(45deg);}
  .nav-toggle[aria-expanded="true"] span:last-child{transform:translateY(-2.75px) rotate(-45deg);}

  /* ---------- 过渡带 ---------- */
  .top-fade{
    height:120px;
    background:linear-gradient(180deg,var(--dark) 0%,#DDE6F3 62%,var(--bg) 100%);
  }

  /* ---------- 面包屑 ---------- */
  .breadcrumb{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--weak);
    padding:8px 0 0;
  }
  .breadcrumb a{color:var(--weak);transition:color .2s ease;}
  .breadcrumb a:hover{color:var(--blue);}
  .breadcrumb .sep{color:#C3D1E4;}
  .breadcrumb .current{color:var(--text);font-weight:500;}

  /* ---------- 页头区 ---------- */
  .page-head{
    padding:26px 0 56px;
  }
  .eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:5px 14px;
    border-radius:999px;
    background:rgba(180,100,60,.1);
    color:var(--clay);
    font-size:12px;
    font-weight:500;
    letter-spacing:.5px;
  }
  .page-head h1{
    margin-top:20px;
    font-size:44px;
    line-height:1.25;
    letter-spacing:-.5px;
    font-weight:700;
    color:var(--text);
    max-width:860px;
  }
  .page-head .lede{
    margin-top:16px;
    max-width:720px;
    font-size:16px;
    line-height:1.85;
    color:var(--muted);
  }
  .head-meta{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin-top:24px;
  }
  .tag{
    display:inline-flex;
    align-items:center;
    padding:5px 14px;
    border-radius:999px;
    background:#E8F0FA;
    color:var(--blue);
    font-size:12px;
    font-weight:500;
    letter-spacing:.5px;
  }

  /* ---------- 横幅 ---------- */
  .banner{
    position:relative;
    height:300px;
    border-radius:var(--radius-lg);
    overflow:hidden;
    background:var(--alt) center/cover no-repeat;
    background-image:url("/assets/images/backpic/back-1.webp");
    box-shadow:var(--shadow-2);
  }
  .banner::before{
    content:"";
    position:absolute;
    inset:0;
    background:rgba(11,18,32,.35);
  }
  .banner-inner{
    position:relative;
    z-index:2;
    height:100%;
    display:flex;
    flex-direction:column;
    justify-content:flex-end;
    padding:32px 40px;
    color:#FFFFFF;
  }
  .banner-inner h2{
    font-size:26px;
    font-weight:600;
    line-height:1.4;
    letter-spacing:-.2px;
  }
  .banner-inner p{
    margin-top:8px;
    max-width:560px;
    font-size:14px;
    line-height:1.7;
    color:#DCE6F2;
  }

  /* ---------- 板块 ---------- */
  .section{
    padding:var(--space-section) 0 0;
  }
  .section-head{
    max-width:760px;
    margin-bottom:44px;
  }
  .section-index{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-size:13px;
    font-weight:500;
    color:var(--clay);
    letter-spacing:.5px;
  }
  .section-index::after{
    content:"";
    width:34px;
    height:1px;
    background:var(--clay);
    opacity:.45;
  }
  .section-head h2{
    margin-top:12px;
    font-size:31px;
    line-height:1.35;
    font-weight:600;
    letter-spacing:-.3px;
    color:var(--text);
  }
  .section-head p{
    margin-top:12px;
    font-size:15px;
    line-height:1.8;
    color:var(--muted);
  }

  /* ---------- 双列图文交替 ---------- */
  .split{
    display:grid;
    grid-template-columns:minmax(0,1fr) minmax(0,1fr);
    gap:56px;
    align-items:center;
  }
  .split + .split{margin-top:72px;}
  .split--wide-left{grid-template-columns:1.15fr 1fr;}
  .split--wide-right{grid-template-columns:1fr 1.15fr;}
  .split--wide-right .split-media{order:2;}
  .split-body h3{
    font-size:21px;
    font-weight:600;
    line-height:1.45;
    color:var(--text);
    padding-left:14px;
    border-left:4px solid var(--blue);
    border-radius:1px;
  }
  .split-body p{
    margin-top:16px;
    font-size:15.5px;
    line-height:1.85;
    color:var(--muted);
  }
  .point-list{
    margin-top:22px;
    display:grid;
    gap:10px;
  }
  .point-list li{
    position:relative;
    padding-left:20px;
    font-size:14.5px;
    line-height:1.75;
    color:var(--text);
  }
  .point-list li::before{
    content:"";
    position:absolute;
    left:0;
    top:9px;
    width:7px;
    height:7px;
    border-radius:50%;
    background:var(--blue);
  }
  .figure{
    position:relative;
    border-radius:var(--radius-lg);
    overflow:hidden;
    background:var(--alt);
    box-shadow:var(--shadow-2);
    border:1px solid var(--border);
  }
  .figure img{
    width:100%;
    height:100%;
    object-fit:cover;
    aspect-ratio:4/3;
    transition:transform .5s ease;
  }
  .figure:hover img{transform:scale(1.03);}
  .img-missing::after{
    content:attr(data-fb);
    position:absolute;
    inset:0;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:26px;
    font-weight:700;
    color:var(--border-strong);
    background:var(--alt);
  }

  /* ---------- 对照表 ---------- */
  .table-wrap{
    background:var(--card);
    border:1px solid var(--border);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-2);
    overflow:hidden;
  }
  table.compare{
    width:100%;
    border-collapse:collapse;
    font-size:14.5px;
  }
  table.compare th,
  table.compare td{
    padding:16px 20px;
    text-align:left;
    border-bottom:1px solid #E4EBF4;
    vertical-align:top;
    line-height:1.7;
  }
  table.compare thead th{
    background:var(--alt);
    color:var(--blue-deep);
    font-size:13px;
    font-weight:600;
    letter-spacing:.4px;
    white-space:nowrap;
  }
  table.compare tbody tr:last-child td{border-bottom:none;}
  table.compare tbody tr{transition:background .2s ease;}
  table.compare tbody tr:hover{background:#FAFCFF;}
  table.compare td:first-child{
    font-weight:600;
    color:var(--text);
    white-space:nowrap;
  }
  .dot{
    display:inline-block;
    width:7px;
    height:7px;
    border-radius:50%;
    background:var(--blue);
    margin-right:8px;
    vertical-align:middle;
  }

  /* ---------- 卡片 ---------- */
  .card{
    background:var(--card);
    border:1px solid var(--border);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-2);
    padding:28px;
    transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  }
  .card:hover{
    transform:translateY(-2px);
    box-shadow:var(--shadow-3);
    border-color:var(--border-strong);
  }
  .card h3{
    font-size:19px;
    font-weight:600;
    line-height:1.5;
    color:var(--text);
  }
  .card p{
    margin-top:10px;
    font-size:14.5px;
    line-height:1.8;
    color:var(--muted);
    display:-webkit-box;
    -webkit-line-clamp:3;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .card-arrow{
    display:inline-flex;
    align-items:center;
    gap:6px;
    margin-top:18px;
    font-size:14px;
    font-weight:600;
    color:var(--blue);
    transition:gap .2s ease,color .2s ease;
  }
  .card:hover .card-arrow{gap:10px;color:var(--blue-deep);}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:46px;
    padding:12px 26px;
    border-radius:var(--radius-btn);
    font-size:15px;
    font-weight:600;
    border:1px solid transparent;
    cursor:pointer;
    transition:background .22s ease,border-color .22s ease,transform .22s ease,box-shadow .22s ease,color .22s ease;
  }
  .btn-primary{
    background:var(--blue);
    color:#FFFFFF;
    box-shadow:var(--shadow-1);
  }
  .btn-primary:hover{
    background:var(--blue-deep);
    transform:translateY(-1px);
    box-shadow:var(--shadow-2);
  }
  .btn-primary:active{transform:translateY(0);}
  .btn-outline{
    background:#FFFFFF;
    border-color:var(--border-strong);
    color:var(--blue);
  }
  .btn-outline:hover{
    border-color:var(--blue);
    background:var(--alt);
  }
  .btn-neon{
    background:var(--neon);
    color:#06231F;
    border-radius:999px;
  }
  .btn-neon:hover{
    filter:brightness(1.08);
    box-shadow:0 0 16px rgba(79,209,197,.55);
    transform:translateY(-1px);
  }
  .link-arrow{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14.5px;
    font-weight:600;
    color:var(--blue);
    transition:gap .2s ease;
  }
  .link-arrow:hover{gap:10px;}

  /* ---------- 内链区 ---------- */
  .link-grid{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:24px;
  }

  /* ---------- FAQ ---------- */
  .faq-layout{
    display:grid;
    grid-template-columns:minmax(0,4fr) minmax(0,8fr);
    gap:48px;
    align-items:start;
  }
  .faq-list{
    background:var(--card);
    border:1px solid var(--border);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-2);
    overflow:hidden;
  }
  .faq-item + .faq-item{border-top:1px solid #E4EBF4;}
  .faq-question{
    display:flex;
    align-items:flex-start;
    gap:12px;
    width:100%;
    padding:20px 24px;
    background:transparent;
    border:none;
    text-align:left;
    cursor:pointer;
    font-size:16.5px;
    font-weight:600;
    line-height:1.6;
    color:var(--text);
    transition:background .2s ease;
  }
  .faq-question:hover{background:#FAFCFF;}
  .faq-num{
    flex:none;
    font-size:13px;
    font-weight:600;
    color:var(--clay);
    line-height:1.9;
  }
  .faq-bar{
    flex:none;
    width:3px;
    height:18px;
    margin-top:5px;
    border-radius:2px;
    background:var(--blue);
  }
  .faq-qtext{flex:1;}
  .faq-icon{
    flex:none;
    position:relative;
    width:18px;
    height:18px;
    margin-top:4px;
    transition:transform .25s ease;
  }
  .faq-icon::before,
  .faq-icon::after{
    content:"";
    position:absolute;
    background:var(--blue);
    border-radius:2px;
  }
  .faq-icon::before{left:0;top:8px;width:18px;height:2px;}
  .faq-icon::after{left:8px;top:0;width:2px;height:18px;}
  .faq-item.open .faq-icon{transform:rotate(45deg);}
  .faq-answer{
    max-height:0;
    overflow:hidden;
    transition:max-height .3s ease;
  }
  .faq-answer p{
    padding:0 24px 12px 61px;
    font-size:15px;
    line-height:1.85;
    color:var(--muted);
  }
  .faq-item.open .faq-answer{max-height:260px;}

  /* ---------- CTA ---------- */
  .cta-band{
    margin-top:var(--space-section);
    background:var(--dark);
    border-radius:var(--radius-lg);
    padding:44px 48px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:32px;
    box-shadow:var(--shadow-2);
  }
  .cta-band h2{
    font-size:27px;
    font-weight:600;
    line-height:1.4;
    color:#FFFFFF;
    letter-spacing:-.2px;
  }
  .cta-band p{
    margin-top:10px;
    font-size:14.5px;
    line-height:1.75;
    color:#A9B6C8;
    max-width:560px;
  }
  .cta-actions{
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    flex:none;
  }

  /* ---------- 页脚 ---------- */
  .site-footer{
    margin-top:112px;
    background:var(--dark);
    border-top:1px solid rgba(79,209,197,.55);
    color:#A9B6C8;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1.2fr 1.2fr;
    gap:40px;
    padding:64px 0 44px;
  }
  .footer-brand{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:18px;
    font-weight:700;
    color:#FFFFFF;
  }
  .footer-desc{
    margin-top:14px;
    font-size:14px;
    line-height:1.8;
    color:#A9B6C8;
    max-width:280px;
  }
  .footer-col h3{
    position:relative;
    padding-left:22px;
    font-size:14px;
    font-weight:600;
    color:#E8EEF6;
    letter-spacing:.4px;
  }
  .footer-col h3::before{
    content:"";
    position:absolute;
    left:0;
    top:50%;
    transform:translateY(-50%);
    width:16px;
    height:1.5px;
    background:var(--neon);
    border-radius:2px;
  }
  .footer-links{
    margin-top:18px;
    display:grid;
    gap:10px;
  }
  .footer-links a{
    display:inline-block;
    font-size:14px;
    color:#A9B6C8;
    transition:color .2s ease,transform .2s ease;
  }
  .footer-links a:hover{color:#FFFFFF;transform:translateX(2px);}
  .footer-info{
    margin-top:18px;
    display:grid;
    gap:10px;
    font-size:13.5px;
    line-height:1.75;
    color:#A9B6C8;
  }
  .footer-info strong{color:#E8EEF6;font-weight:600;}
  .footer-bottom{
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:12px;
    padding:20px 0 28px;
    border-top:1px solid rgba(255,255,255,.08);
    font-size:13px;
    color:#8A97A8;
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .container{padding:0 24px;}
    :root{--space-section:72px;}
    .nav-toggle{display:block;}
    .nav-links{
      position:fixed;
      top:60px;
      left:0;
      right:0;
      bottom:0;
      height:auto;
      flex-direction:column;
      align-items:stretch;
      gap:0;
      padding:20px 24px 32px;
      background:var(--dark);
      transform:translateY(-8px);
      opacity:0;
      visibility:hidden;
      pointer-events:none;
      transition:opacity .22s ease,transform .22s ease,visibility .22s;
      overflow-y:auto;
    }
    .nav-links.open{
      opacity:1;
      visibility:visible;
      transform:none;
      pointer-events:auto;
    }
    .nav-link{
      height:56px;
      padding:0 16px;
      font-size:16px;
      border-radius:8px;
    }
    .nav-link::after{
      left:auto;
      right:0;
      top:12px;
      bottom:12px;
      width:4px;
      height:auto;
      transform:scaleY(0);
      transform-origin:center top;
    }
    .nav-link.active::after{transform:scaleY(1);}
    .nav-link:hover::after{transform:scaleY(1);}
    .nav-cta{
      margin:20px 0 0;
      min-height:48px;
      width:100%;
      font-size:15px;
    }
    .nav-inner{height:60px;}
    .brand{font-size:17px;}
    .brand-suffix{display:none;}
    .top-fade{height:72px;}
    .page-head h1{font-size:32px;}
    .section-head h2{font-size:24px;}
    .split,
    .split--wide-left,
    .split--wide-right{grid-template-columns:1fr;gap:28px;}
    .split--wide-right .split-media{order:0;}
    .split + .split{margin-top:52px;}
    .banner{height:240px;}
    .banner-inner{padding:24px;}
    .link-grid{grid-template-columns:1fr 1fr;}
    .faq-layout{grid-template-columns:1fr;gap:28px;}
    .cta-band{
      flex-direction:column;
      align-items:flex-start;
      padding:32px 28px;
      gap:20px;
    }
    .footer-grid{
      grid-template-columns:1fr 1fr;
      gap:32px;
      padding:48px 0 32px;
    }
    .site-footer{margin-top:72px;}
  }

  @media (max-width:639px){
    .container{padding:0 18px;}
    :root{--space-section:56px;}
    .page-head{padding:20px 0 40px;}
    .page-head h1{font-size:28px;line-height:1.3;}
    .section-head h2{font-size:22px;}
    .section-head{margin-bottom:32px;}
    .split-body h3{font-size:18px;}
    .banner{height:210px;border-radius:16px;}
    .banner-inner h2{font-size:20px;}
    .link-grid{grid-template-columns:1fr;}
    .card{padding:22px;}
    .cta-band h2{font-size:22px;}
    .cta-actions{width:100%;}
    .cta-actions .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{flex-direction:column;gap:6px;}
    .faq-question{padding:16px 18px;font-size:15.5px;gap:10px;}
    .faq-answer p{padding:0 18px 12px 51px;font-size:14.5px;}
    table.compare{font-size:13.5px;}
    table.compare th,
    table.compare td{padding:12px 14px;}
    table.compare td:first-child{white-space:normal;}
    .table-wrap{overflow-x:auto;}
    .figure img{aspect-ratio:16/10;}
  }

/* roulang page: article */
:root{
  --primary:#16457B;
  --primary-dark:#0E2F57;
  --accent:#B4643C;
  --neon:#4FD1C5;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --surface-alt:#EEF3FA;
  --dark:#0B1220;
  --text:#0F1B2D;
  --text-2:#5A6A80;
  --text-3:#8A97A8;
  --line:#DCE4EF;
  --line-2:#E4EBF4;
  --radius:14px;
  --radius-lg:20px;
  --radius-sm:10px;
  --shadow-1:0 1px 2px rgba(22,69,123,.06);
  --shadow-2:0 6px 18px rgba(22,69,123,.08);
  --shadow-3:0 14px 32px rgba(22,69,123,.14);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
@media (max-width:1023px){.container{padding:0 24px}}
@media (max-width:640px){.container{padding:0 18px}}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--dark);
  border-bottom:1px solid rgba(79,209,197,.14);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,var(--neon) 0%,rgba(79,209,197,.35) 38%,rgba(79,209,197,0) 100%);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:#fff;letter-spacing:-.2px;white-space:nowrap}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;flex:0 0 34px;border-radius:9px;
  background:linear-gradient(140deg,#16457B,#0E2F57);
  border:1px solid rgba(79,209,197,.35);
  color:var(--neon);font-size:13px;font-weight:700;letter-spacing:.5px;
}
.brand-suffix{font-weight:400;font-size:13px;color:#A9B6C8;margin-left:6px}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  position:relative;font-size:15px;color:#C6D2E2;
  padding:8px 12px;border-radius:8px;transition:color .2s ease;white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;border-radius:2px;
  background:var(--neon);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:#fff}
.nav-link.active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(79,209,197,.55)}
.nav-cta{
  margin-left:10px;background:var(--neon);color:#06231F;
  font-size:14px;font-weight:600;padding:10px 20px;border-radius:999px;
  transition:box-shadow .22s ease,transform .22s ease,filter .22s ease;white-space:nowrap;
}
.nav-cta:hover{box-shadow:0 0 16px rgba(79,209,197,.6);filter:brightness(1.06);transform:translateY(-1px)}
.nav-cta:active{transform:translateY(0)}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:6px;
  width:44px;height:44px;padding:0;background:transparent;border:0;cursor:pointer;
}
.nav-toggle span{display:block;width:22px;height:2px;margin:0 auto;border-radius:2px;background:#E8EEF6;transition:transform .22s ease,opacity .22s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(4px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){transform:translateY(-4px) rotate(-45deg)}

@media (max-width:900px){
  .nav-inner{height:60px}
  .nav-toggle{display:flex}
  .nav-links{
    position:fixed;left:0;right:0;top:60px;bottom:0;
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    background:var(--dark);padding:16px 18px 32px;overflow-y:auto;
    transform:translateY(-10px);opacity:0;visibility:hidden;
    transition:transform .24s ease,opacity .24s ease,visibility .24s;
    border-top:1px solid rgba(79,209,197,.14);
  }
  .nav-links.open{transform:translateY(0);opacity:1;visibility:visible}
  .nav-link{font-size:16px;line-height:56px;padding:0 14px;border-radius:10px;border-left:4px solid transparent}
  .nav-link::after{display:none}
  .nav-link.active{border-left-color:var(--neon);background:rgba(79,209,197,.08);box-shadow:none}
  .nav-cta{margin-top:16px;text-align:center;line-height:46px;padding:0}
  .brand{font-size:17px}
  .brand-suffix{display:none}
}

/* ---------- Transition band ---------- */
.page-band{
  height:120px;
  background:linear-gradient(180deg,#0B1220 0%,#22334a 42%,#F7F9FC 100%);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);padding:24px 0 0}
.breadcrumb a{color:var(--text-3);transition:color .2s ease}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--text)}

/* ---------- Article layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);
  gap:48px;padding:32px 0 8px;
}
@media (max-width:1023px){
  .article-layout{grid-template-columns:1fr;gap:36px;padding-top:24px}
}

.article-head{padding-bottom:28px;border-bottom:1px solid var(--line-2)}
.article-cat{
  display:inline-block;font-size:12px;font-weight:500;letter-spacing:.5px;
  color:var(--primary);background:#E8F0FA;border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.article-title{
  font-size:32px;line-height:1.35;font-weight:700;letter-spacing:-.5px;
  color:var(--text);margin-bottom:18px;max-width:820px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-3)}
.article-meta .dot{color:var(--line)}
.article-meta .meta-date{color:var(--accent)}

/* ---------- Article body typography ---------- */
.article-body{font-size:16px;line-height:1.85;color:var(--text);max-width:760px;padding-top:28px}
.article-body p{margin:0 0 20px}
.article-body h2{
  position:relative;font-size:22px;line-height:1.45;font-weight:600;
  margin:36px 0 16px;padding-left:16px;color:var(--text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--primary);
}
.article-body h3{font-size:18px;font-weight:600;margin:28px 0 12px;color:var(--text)}
.article-body ul,.article-body ol{padding-left:22px;margin:0 0 20px;list-style:revert}
.article-body li{margin-bottom:10px}
.article-body li::marker{color:var(--primary)}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:var(--surface-alt);
  border-left:3px solid var(--primary);border-radius:0 10px 10px 0;color:#31445c;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:24px auto;background:var(--surface-alt)}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line-2);padding:12px 14px;text-align:left;vertical-align:top}
.article-body th{background:var(--surface-alt);font-weight:600}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--primary-dark)}
.article-body strong{font-weight:600}

/* ---------- Tags ---------- */
.article-tags{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line-2)}
.tag-label{font-size:13px;color:var(--text-3)}
.tag{
  display:inline-block;font-size:12px;font-weight:500;letter-spacing:.4px;
  color:var(--primary);background:#E8F0FA;border-radius:999px;padding:6px 14px;
  transition:background .2s ease,color .2s ease;
}
.tag:hover{background:#D8E6F7;color:var(--primary-dark)}
.tag--accent{background:rgba(180,100,60,.1);color:var(--accent)}
.tag--accent:hover{background:rgba(180,100,60,.18);color:#9A5230}

/* ---------- Empty state ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:56px 24px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-1);
}
.empty-icon{
  width:64px;height:64px;border-radius:50%;background:var(--surface-alt);
  display:flex;align-items:center;justify-content:center;
  color:var(--primary);font-weight:700;font-size:18px;letter-spacing:.5px;margin-bottom:18px;
}
.empty-state p{color:var(--text-2);font-size:16px;margin-bottom:8px}
.empty-state .empty-hint{font-size:14px;color:var(--text-3);margin-bottom:22px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-1)}
.btn-ghost{background:#fff;color:var(--primary);border-color:#C3D1E4}
.btn-ghost:hover{border-color:var(--primary);background:var(--surface-alt);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(0)}
.btn-arrow span{transition:transform .2s ease}
.btn:hover .btn-arrow-i{transform:translateX(3px)}

/* ---------- Sidebar ---------- */
.aside-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-2);padding:24px;margin-bottom:24px;
}
.aside-title{
  display:flex;align-items:center;gap:10px;
  font-size:15px;font-weight:600;color:var(--text);margin-bottom:16px;
}
.aside-title::before{content:"";width:16px;height:2px;border-radius:2px;background:var(--primary)}
.aside-list li + li{border-top:1px solid var(--line-2)}
.aside-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 0;font-size:15px;color:var(--text-2);transition:color .2s ease,transform .2s ease;
}
.aside-list a:hover{color:var(--primary);transform:translateX(2px)}
.aside-list .aside-arrow{color:var(--line);transition:color .2s ease}
.aside-list a:hover .aside-arrow{color:var(--primary)}

.consult-card{
  background:var(--surface-alt);border:1px solid #D9E5F4;border-radius:var(--radius);
  padding:24px;margin-bottom:24px;
}
.consult-card h3{font-size:16px;font-weight:600;color:var(--text);margin-bottom:10px}
.consult-card p{font-size:14px;line-height:1.75;color:var(--text-2);margin-bottom:16px}
.consult-meta{font-size:13px;color:var(--text-3);line-height:1.9;margin-bottom:18px}
.consult-meta strong{color:var(--primary);font-weight:600}
.consult-card .btn{width:100%}

/* ---------- Related ---------- */
.related-section{padding:64px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:28px}
.section-head h2{font-size:26px;font-weight:600;letter-spacing:-.3px;color:var(--text)}
.section-head p{font-size:14px;color:var(--text-3);margin-top:8px}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
  color:var(--primary);transition:color .2s ease;
}
.link-more:hover{color:var(--primary-dark)}
.link-more .arrow{transition:transform .2s ease}
.link-more:hover .arrow{transform:translateX(3px)}

.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
@media (max-width:900px){.related-grid{grid-template-columns:1fr}}
.rel-card{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-2);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);border-color:#C3D1E4}
.rel-card:active{transform:translateY(-1px)}
.rel-card figure{margin:0;background:var(--surface-alt)}
.rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.rel-card-body{padding:20px 22px 22px}
.rel-card-body h3{font-size:17px;font-weight:600;line-height:1.55;color:var(--text);margin-bottom:8px}
.rel-card-body p{font-size:14px;line-height:1.7;color:var(--text-2)}
.rel-card-date{display:block;font-size:12px;color:var(--accent);margin-top:14px;letter-spacing:.4px}

/* ---------- CTA ---------- */
.cta-band{
  margin:72px 0 88px;background:var(--dark);border-radius:var(--radius-lg);
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,var(--neon),rgba(79,209,197,0));
}
.cta-band h2{font-size:26px;font-weight:600;color:#E8EEF6;letter-spacing:-.3px;line-height:1.4}
.cta-band p{font-size:14px;color:#A9B6C8;margin-top:10px;max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-band .btn-primary{background:#4FD1C5;color:#06231F;border-color:transparent}
.cta-band .btn-primary:hover{background:#3FC0B5;color:#06231F;box-shadow:0 0 18px rgba(79,209,197,.45)}
.cta-band .btn-ghost-dark{background:transparent;color:#E8EEF6;border-color:rgba(232,238,246,.35)}
.cta-band .btn-ghost-dark:hover{background:rgba(232,238,246,.08);border-color:rgba(232,238,246,.6);transform:translateY(-1px)}
@media (max-width:860px){
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px 24px;text-align:left}
  .cta-band h2{font-size:22px}
}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--dark);color:#A9B6C8;position:relative;
  border-top:1px solid rgba(79,209,197,.35);
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1.2fr 1.2fr;gap:40px;
  padding:60px 0 44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-desc{font-size:14px;line-height:1.8;color:#A9B6C8;max-width:280px}
.footer-col h3{
  display:flex;align-items:center;gap:10px;
  font-size:14px;font-weight:600;color:#E8EEF6;margin-bottom:18px;
}
.footer-col h3::before{content:"";width:16px;height:2px;border-radius:2px;background:var(--neon)}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:14px;color:#A9B6C8;transition:color .2s ease,transform .2s ease;display:inline-block}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-info{display:flex;flex-direction:column;gap:10px;font-size:14px;line-height:1.75;color:#A9B6C8}
.footer-info strong{color:#E8EEF6;font-weight:500}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  padding:22px 0 32px;border-top:1px solid rgba(232,238,246,.1);
  font-size:13px;color:#8A97A8;
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px}
}
@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* ---------- Responsive typography ---------- */
@media (max-width:1023px){
  .article-title{font-size:28px}
  .section-head h2{font-size:24px}
}
@media (max-width:640px){
  .page-band{height:96px}
  .article-title{font-size:26px;line-height:1.35}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:20px}
  .article-body h3{font-size:17px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px}
  .section-head h2{font-size:22px}
  .article-layout{gap:28px}
  .aside-card,.consult-card{padding:20px}
  .btn{width:100%}
  .cta-actions{width:100%}
}

/* roulang page: category2 */
:root{
  --blue:#16457B;
  --blue-deep:#0E2F57;
  --clay:#B4643C;
  --neon:#4FD1C5;
  --bg:#F7F9FC;
  --card:#FFFFFF;
  --bg-alt:#EEF3FA;
  --dark:#0B1220;
  --ink:#0F1B2D;
  --ink-2:#5A6A80;
  --ink-3:#8A97A8;
  --line:#DCE4EF;
  --line-strong:#C3D1E4;
  --line-soft:#E4EBF4;
  --dark-text:#E8EEF6;
  --dark-sub:#A9B6C8;
  --radius-card:14px;
  --radius-img:20px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(22,69,123,.06);
  --shadow-2:0 6px 18px rgba(22,69,123,.08);
  --shadow-3:0 14px 32px rgba(22,69,123,.14);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",ui-sans-serif,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--blue);text-decoration:none;transition:color .2s ease,transform .2s ease;}
a:hover{color:var(--blue-deep);}
button{font-family:inherit;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:40px;padding-right:40px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--dark);
  border-bottom:1px solid rgba(79,209,197,.35);
  box-shadow:0 1px 0 rgba(79,209,197,.18),0 8px 24px rgba(11,18,32,.28);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:68px;
}
.brand{
  display:flex;align-items:center;gap:10px;
  color:#FFFFFF;font-size:19px;font-weight:700;letter-spacing:-.2px;
  white-space:nowrap;
}
.brand:hover{color:#FFFFFF;}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:rgba(79,209,197,.14);
  border:1px solid rgba(79,209,197,.5);
  color:var(--neon);font-size:13px;font-weight:700;letter-spacing:.5px;
  flex:0 0 auto;
}
.brand-suffix{color:var(--dark-sub);font-weight:400;font-size:14px;margin-left:6px;}
.nav-links{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:8px;
  font-size:15px;color:#C6D2E2;line-height:1;
  transition:color .2s ease,background-color .2s ease;
}
.nav-link:hover{color:#FFFFFF;background:rgba(255,255,255,.05);}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--neon);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:#FFFFFF;font-weight:600;}
.nav-link.active::after{
  transform:scaleX(1);
  box-shadow:0 0 12px rgba(79,209,197,.55);
}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:38px;padding:10px 20px;margin-left:10px;
  border-radius:999px;background:var(--neon);color:#06231F;
  font-size:14px;font-weight:600;line-height:1;
  transition:box-shadow .2s ease,background-color .2s ease,transform .2s ease;
}
.nav-cta:hover{background:#6EE0D5;color:#06231F;box-shadow:0 0 16px rgba(79,209,197,.6);transform:translateY(-1px);}
.nav-toggle{
  display:none;width:44px;height:44px;border:0;border-radius:10px;
  background:rgba(255,255,255,.06);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:#E8EEF6;border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
.nav-toggle.is-open span:first-child{transform:translateY(3.5px) rotate(45deg);}
.nav-toggle.is-open span:last-child{transform:translateY(-3.5px) rotate(-45deg);}

/* ============ 通用组件 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:12px 24px;
  border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  transition:background-color .2s ease,border-color .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.btn-primary{background:var(--blue);color:#FFFFFF;box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--blue-deep);color:#FFFFFF;transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:#FFFFFF;color:var(--blue);border-color:var(--line-strong);}
.btn-ghost:hover{background:var(--bg-alt);border-color:var(--blue);color:var(--blue-deep);}
.btn-neon{background:var(--neon);color:#06231F;border-radius:999px;}
.btn-neon:hover{background:#6EE0D5;color:#06231F;box-shadow:0 0 16px rgba(79,209,197,.5);transform:translateY(-1px);}
.btn:focus-visible,.nav-cta:focus-visible,.nav-link:focus-visible,.nav-toggle:focus-visible,
a:focus-visible,button:focus-visible{outline:2px solid var(--blue);outline-offset:3px;}
.btn-arrow::after{content:"→";transition:transform .2s ease;display:inline-block;}
.btn-arrow:hover::after{transform:translateX(3px);}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:500;letter-spacing:.5px;line-height:1.6;
}
.badge-blue{background:#E8F0FA;color:var(--blue);}
.badge-clay{background:rgba(180,100,60,.1);color:var(--clay);}
.badge-neon{background:rgba(79,209,197,.14);color:#0B3B37;}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-3);padding:24px 0 0;
}
.breadcrumb a{color:var(--ink-3);}
.breadcrumb a:hover{color:var(--blue);}
.breadcrumb .sep{color:var(--line-strong);}
.breadcrumb .current{color:var(--ink);}

/* ============ 页头 ============ */
.page-hero{padding:36px 0 56px;background:linear-gradient(180deg,var(--bg-alt) 0%,var(--bg) 100%);border-bottom:1px solid var(--line-soft);}
.page-hero h1{
  margin:18px 0 0;font-size:44px;font-weight:700;line-height:1.25;letter-spacing:-.5px;
  color:var(--ink);max-width:820px;
}
.page-hero p.lede{
  margin:16px 0 0;font-size:17px;line-height:1.8;color:var(--ink-2);max-width:720px;
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px;
  font-size:13px;color:var(--ink-3);
}
.hero-meta span{display:inline-flex;align-items:center;gap:6px;}
.hero-meta .dot{width:5px;height:5px;border-radius:50%;background:var(--clay);}

/* ============ 横幅 ============ */
.banner-band{
  position:relative;margin:0 auto;max-width:var(--container);
  border-radius:var(--radius-img);overflow:hidden;
  aspect-ratio:16/6;min-height:200px;
}
.banner-band img{width:100%;height:100%;object-fit:cover;}
.banner-band .mask{
  position:absolute;inset:0;background:rgba(11,18,32,.35);
  display:flex;align-items:center;
  padding:0 48px;
}
.banner-band .mask-inner{max-width:620px;color:#FFFFFF;}
.banner-band h2{
  margin:0;font-size:30px;font-weight:600;line-height:1.35;letter-spacing:-.3px;color:#FFFFFF;
}
.banner-band p{margin:12px 0 0;font-size:15px;line-height:1.8;color:rgba(255,255,255,.86);}

/* ============ 主体：目录 + 长文 ============ */
.guide-wrap{padding:72px 0 16px;}
.guide-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.toc-card{
  position:sticky;top:96px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);padding:24px;
}
.toc-card h3{
  margin:0 0 14px;font-size:14px;font-weight:600;color:var(--ink);
  padding-left:12px;position:relative;letter-spacing:.5px;
}
.toc-card h3::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:14px;border-radius:2px;background:var(--blue);
}
.toc-list{list-style:none;margin:0;padding:0;}
.toc-list li + li{border-top:1px solid var(--line-soft);}
.toc-list a{
  display:flex;align-items:flex-start;gap:10px;
  padding:12px 4px;font-size:14px;line-height:1.6;color:var(--ink-2);
  transition:color .2s ease,padding-left .2s ease;
}
.toc-list a:hover{color:var(--blue);padding-left:8px;}
.toc-list .num{font-size:12px;color:var(--clay);font-weight:600;flex:0 0 auto;padding-top:2px;}
.toc-note{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line-soft);
  font-size:13px;line-height:1.7;color:var(--ink-3);
}
.toc-cta{
  display:inline-flex;align-items:center;gap:6px;margin-top:14px;
  font-size:14px;font-weight:600;color:var(--blue);
}
.toc-cta:hover{gap:10px;}

.guide-article{min-width:0;}
.content-block{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);padding:36px 40px;margin-bottom:32px;
  scroll-margin-top:96px;
}
.content-block h2{
  margin:0 0 8px;font-size:28px;font-weight:600;line-height:1.35;letter-spacing:-.3px;
  color:var(--ink);padding-left:16px;position:relative;
}
.content-block h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:2px;background:var(--blue);
}
.block-kicker{
  font-size:12px;font-weight:600;letter-spacing:1px;color:var(--clay);
  margin:0 0 10px;padding-left:16px;
}
.content-block p{margin:14px 0 0;font-size:16px;line-height:1.85;color:var(--ink-2);max-width:760px;}
.content-block p strong{color:var(--ink);font-weight:600;}

.bullet-list{list-style:none;margin:22px 0 0;padding:0;max-width:760px;}
.bullet-list li{
  position:relative;padding-left:22px;margin-bottom:12px;
  font-size:15px;line-height:1.8;color:var(--ink-2);
}
.bullet-list li::before{
  content:"";position:absolute;left:0;top:11px;
  width:8px;height:8px;border-radius:2px;background:var(--blue);
}
.bullet-list li b{color:var(--ink);font-weight:600;}

.figure-inline{
  margin:26px 0 0;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line-soft);box-shadow:var(--shadow-1);
  background:var(--bg-alt);
}
.figure-inline img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.figure-inline figcaption{padding:12px 16px;font-size:13px;color:var(--ink-3);background:#FFFFFF;}

.compare-table{
  width:100%;margin:26px 0 0;border-collapse:collapse;
  font-size:14px;line-height:1.7;border:1px solid var(--line-soft);
  border-radius:12px;overflow:hidden;
}
.compare-table th,.compare-table td{
  padding:14px 16px;text-align:left;border-bottom:1px solid var(--line-soft);
  vertical-align:top;
}
.compare-table thead th{
  background:var(--bg-alt);color:var(--ink);font-weight:600;font-size:13px;letter-spacing:.3px;
}
.compare-table tbody tr:last-child td{border-bottom:0;}
.compare-table tbody tr:hover{background:#FAFCFF;}
.compare-table td:first-child{color:var(--ink);font-weight:600;white-space:nowrap;}
.compare-table td{color:var(--ink-2);}
.price-tag{color:var(--clay);font-weight:600;}

.checklist{
  list-style:none;margin:24px 0 0;padding:0;
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 20px;
}
.checklist li{
  display:flex;gap:10px;align-items:flex-start;
  background:var(--bg-alt);border:1px solid var(--line-soft);border-radius:10px;
  padding:12px 14px;font-size:14px;line-height:1.7;color:var(--ink-2);
}
.checklist li .tick{
  flex:0 0 auto;width:18px;height:18px;border-radius:50%;
  background:#FFFFFF;border:1px solid var(--line-strong);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:11px;color:var(--blue);font-weight:700;margin-top:3px;
}
.checklist li b{color:var(--ink);font-weight:600;}

.callout{
  margin:26px 0 0;padding:20px 24px;border-radius:12px;
  background:var(--bg-alt);border-left:3px solid var(--blue);
  font-size:15px;line-height:1.85;color:var(--ink-2);
}
.callout b{color:var(--ink);}

/* ============ FAQ ============ */
.faq-section{padding:56px 0 8px;}
.section-head{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;margin-bottom:28px;}
.section-head h2{
  margin:0;font-size:30px;font-weight:600;line-height:1.35;letter-spacing:-.3px;color:var(--ink);
}
.section-head .head-desc{margin:0;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:640px;}
.faq-list{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-2);overflow:hidden;
}
.faq-item + .faq-item{border-top:1px solid var(--line-soft);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:14px;
  padding:20px 24px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;line-height:1.6;color:var(--ink);
  transition:background-color .2s ease;
}
.faq-q:hover{background:#FAFCFF;}
.faq-q .q-idx{flex:0 0 auto;font-size:13px;color:var(--clay);font-weight:600;padding-top:3px;}
.faq-q .q-text{flex:1 1 auto;position:relative;padding-left:14px;}
.faq-q .q-text::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:3px;border-radius:2px;background:var(--blue);
}
.faq-q .q-icon{
  flex:0 0 auto;width:22px;height:22px;margin-top:2px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:400;color:var(--blue);line-height:1;
  transition:transform .25s ease;
}
.faq-item.open .q-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .3s ease;
}
.faq-a-inner{
  padding:0 24px 20px 62px;font-size:15px;line-height:1.85;color:var(--ink-2);
}

/* ============ 内链卡片 ============ */
.link-section{padding:64px 0 0;}
.link-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:28px;}
.link-card{
  display:block;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-2);
  padding:26px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.link-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-3);border-color:var(--line-strong);}
.link-card .badge{margin-bottom:14px;}
.link-card h3{margin:0 0 10px;font-size:20px;font-weight:600;line-height:1.4;color:var(--ink);}
.link-card p{margin:0 0 16px;font-size:14px;line-height:1.75;color:var(--ink-2);}
.link-card .go{font-size:14px;font-weight:600;color:var(--blue);display:inline-flex;align-items:center;gap:6px;}
.link-card:hover .go{gap:10px;}

/* ============ CTA 带 ============ */
.cta-band-wrap{padding:80px 0 0;}
.cta-band{
  background:var(--dark);border-radius:var(--radius-img);
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;
  position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,var(--neon),rgba(79,209,197,0));
}
.cta-band h2{
  margin:0;font-size:28px;font-weight:600;line-height:1.4;color:#FFFFFF;letter-spacing:-.3px;
}
.cta-band p{margin:8px 0 0;font-size:14px;line-height:1.8;color:var(--dark-sub);max-width:560px;}
.cta-band .btn{flex:0 0 auto;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:96px;background:var(--dark);
  border-top:1px solid rgba(79,209,197,.5);
  color:var(--dark-text);
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1.3fr 1.1fr;gap:40px;
  padding:64px 0 40px;
}
.footer-brand{
  display:flex;align-items:center;gap:10px;
  font-size:18px;font-weight:700;color:#FFFFFF;letter-spacing:-.2px;
}
.footer-desc{margin:14px 0 0;font-size:14px;line-height:1.8;color:var(--dark-sub);max-width:280px;}
.footer-col h3{
  margin:0 0 16px;font-size:14px;font-weight:600;color:#FFFFFF;
  padding-left:22px;position:relative;letter-spacing:.5px;
}
.footer-col h3::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:16px;height:2px;border-radius:2px;background:var(--neon);
}
.footer-links{list-style:none;margin:0;padding:0;}
.footer-links li + li{margin-top:10px;}
.footer-links a{
  font-size:14px;color:var(--dark-sub);display:inline-block;
  transition:color .2s ease,transform .2s ease;
}
.footer-links a:hover{color:#FFFFFF;transform:translateX(2px);}
.footer-info{display:flex;flex-direction:column;gap:10px;font-size:14px;line-height:1.75;color:var(--dark-sub);}
.footer-info strong{color:var(--dark-text);font-weight:500;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0 32px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#7F8DA1;
}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .container{padding-left:24px;padding-right:24px;}
  .nav-toggle{display:flex;}
  .nav-links{
    position:fixed;inset:60px 0 0 0;z-index:70;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--dark);padding:16px 24px 32px;
    transform:translateX(100%);transition:transform .28s ease;
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-link{
    padding:0 0 0 14px;min-height:56px;font-size:16px;border-radius:0;
    border-bottom:1px solid rgba(255,255,255,.07);
  }
  .nav-link::after{display:none;}
  .nav-link::before{
    content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);
    width:4px;height:22px;border-radius:2px;background:var(--neon);transition:transform .2s ease;
  }
  .nav-link:hover::before,.nav-link.active::before{transform:translateY(-50%) scaleY(1);}
  .nav-link:hover,.nav-link.active{background:rgba(255,255,255,.04);box-shadow:none;}
  .nav-cta{margin:20px 0 0;min-height:48px;border-radius:999px;justify-content:center;font-size:15px;}
  .page-hero h1{font-size:32px;}
  .guide-wrap{padding:56px 0 8px;}
  .guide-layout{grid-template-columns:1fr;gap:32px;}
  .toc-card{position:static;}
  .content-block{padding:28px;}
  .section-head{grid-template-columns:1fr;gap:16px;}
  .link-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px;padding:48px 0 32px;}
  .banner-band .mask{padding:0 28px;}
  .banner-band h2{font-size:24px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px;}
  .cta-band h2{font-size:24px;}
  .site-footer{margin-top:72px;}
}
@media (max-width:639px){
  .container{padding-left:18px;padding-right:18px;}
  .nav-inner{min-height:60px;}
  .nav-links{inset:60px 0 0 0;}
  .brand{font-size:16px;}
  .brand-suffix{display:none;}
  .page-hero{padding:24px 0 40px;}
  .page-hero h1{font-size:28px;line-height:1.3;}
  .page-hero p.lede{font-size:15px;}
  .banner-band{aspect-ratio:16/9;border-radius:14px;min-height:170px;}
  .banner-band .mask{padding:0 20px;}
  .banner-band h2{font-size:20px;}
  .banner-band p{font-size:13px;}
  .guide-wrap{padding:40px 0 0;}
  .content-block{padding:22px 20px;border-radius:12px;margin-bottom:22px;}
  .content-block h2{font-size:22px;}
  .content-block p,.bullet-list li{font-size:15px;}
  .block-kicker{padding-left:16px;}
  .checklist{grid-template-columns:1fr;}
  .compare-table{font-size:13px;}
  .compare-table th,.compare-table td{padding:11px 12px;}
  .faq-q{padding:16px 18px;font-size:16px;}
  .faq-a-inner{padding:0 18px 18px 46px;font-size:14px;}
  .link-grid{grid-template-columns:1fr;}
  .link-card{padding:22px;}
  .cta-band{padding:26px 22px;border-radius:14px;}
  .cta-band h2{font-size:21px;}
  .cta-band .btn{width:100%;}
  .cta-band-wrap{padding:56px 0 0;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .section-head h2{font-size:22px;}
  .btn{width:auto;}
}

/* roulang page: category3 */
:root{
    --blue:#16457B;
    --blue-deep:#0E2F57;
    --clay:#B4643C;
    --neon:#4FD1C5;
    --bg:#F7F9FC;
    --card:#FFFFFF;
    --soft:#EEF3FA;
    --dark:#0B1220;
    --text:#0F1B2D;
    --sub:#5A6A80;
    --muted:#8A97A8;
    --line:#DCE4EF;
    --line-2:#C3D1E4;
    --line-soft:#E4EBF4;
    --r-card:14px;
    --r-big:20px;
    --r-btn:10px;
    --sh-1:0 1px 2px rgba(22,69,123,.06);
    --sh-2:0 6px 18px rgba(22,69,123,.08);
    --sh-3:0 14px 32px rgba(22,69,123,.14);
    --header-h:68px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    padding:0;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.8;
    font-weight:400;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;}
  a{color:inherit;text-decoration:none;}
  button{font-family:inherit;}
  ul,ol{margin:0;padding:0;list-style:none;}
  p{margin:0;}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;}
  .section{padding:88px 0;}
  .section-soft{background:var(--soft);}
  .section-white{background:#FFFFFF;}

  /* ===== 顶部导航 ===== */
  .site-header{position:sticky;top:0;left:0;right:0;z-index:80;background:var(--dark);}
  .site-header::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,var(--neon) 0%,rgba(79,209,197,.35) 40%,rgba(79,209,197,0) 72%);}
  .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--header-h);}
  .brand{display:flex;align-items:center;gap:10px;color:#FFFFFF;font-size:19px;font-weight:700;letter-spacing:.2px;white-space:nowrap;}
  .brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:rgba(79,209,197,.12);border:1px solid rgba(79,209,197,.35);color:var(--neon);font-size:13px;font-weight:700;letter-spacing:.5px;flex:none;}
  .brand-suffix{font-weight:400;color:#A9B6C8;font-size:14px;margin-left:8px;}
  .nav-links{display:flex;align-items:center;gap:4px;}
  .nav-link{position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;font-size:15px;color:#C6D2E2;border-radius:8px;transition:color .2s ease;}
  .nav-link::after{content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;background:var(--neon);transform:scaleX(0);transform-origin:left center;transition:transform .22s ease;}
  .nav-link:hover{color:#FFFFFF;}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:#FFFFFF;text-shadow:0 0 12px rgba(79,209,197,.55);}
  .nav-link.active::after{transform:scaleX(1);box-shadow:0 0 12px rgba(79,209,197,.55);}
  .nav-cta{display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 20px;margin-left:12px;border-radius:999px;background:var(--neon);color:#06231F;font-size:14px;font-weight:600;white-space:nowrap;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease;}
  .nav-cta:hover{background:#67E0D4;box-shadow:0 0 16px rgba(79,209,197,.6);transform:translateY(-1px);}
  .nav-toggle{display:none;width:44px;height:44px;background:none;border:0;cursor:pointer;flex-direction:column;justify-content:center;gap:6px;padding:0;}
  .nav-toggle span{display:block;width:22px;height:2px;margin:0 auto;border-radius:2px;background:#C6D2E2;transition:background .2s ease;}
  .nav-toggle:hover span{background:#FFFFFF;}

  /* ===== 深浅过渡带 ===== */
  .nav-fade{height:120px;background:linear-gradient(180deg,#0B1220 0%,#1B2A42 34%,#9AAAC2 68%,#F7F9FC 100%);}

  /* ===== 页面通用标题 ===== */
  .tag-clay{display:inline-flex;align-items:center;gap:8px;padding:5px 14px;border-radius:999px;background:rgba(180,100,60,.1);color:var(--clay);font-size:12px;font-weight:500;letter-spacing:.5px;}
  .tag-blue{display:inline-flex;align-items:center;padding:5px 14px;border-radius:999px;background:#E8F0FA;color:var(--blue);font-size:12px;font-weight:500;letter-spacing:.5px;}
  .page-title{margin:18px 0 0;font-size:42px;line-height:1.25;font-weight:700;letter-spacing:-.5px;color:var(--text);}
  .page-title .hl{color:var(--blue);}
  .h2-bar{position:relative;margin:0;padding-left:16px;font-size:30px;line-height:1.35;font-weight:600;color:var(--text);}
  .h2-bar::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;background:var(--blue);}
  .h3-line{margin:0 0 12px;font-size:21px;line-height:1.45;font-weight:600;color:var(--text);}
  .lead{color:var(--sub);font-size:16px;line-height:1.8;}

  /* ===== 面包屑 ===== */
  .crumb{padding:26px 0 0;font-size:13px;color:var(--muted);}
  .crumb a{color:var(--muted);transition:color .2s ease;}
  .crumb a:hover{color:var(--blue);}
  .crumb span.sep{margin:0 8px;color:var(--line-2);}
  .crumb .current{color:var(--text);}

  /* ===== Hero ===== */
  .page-hero{padding:28px 0 72px;}
  .hero-grid{display:grid;grid-template-columns:1.28fr .88fr;gap:56px;align-items:center;}
  .hero-lead{margin-top:20px;max-width:560px;font-size:17px;line-height:1.85;color:var(--sub);}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  .hero-meta{margin-top:18px;font-size:12px;color:var(--muted);letter-spacing:.3px;}
  .hero-figure{position:relative;border-radius:var(--r-big);overflow:hidden;background:var(--soft);box-shadow:var(--sh-2);border:1px solid var(--line-soft);}
  .hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;}
  .figure-badge{position:absolute;right:14px;bottom:14px;display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;background:rgba(255,255,255,.94);color:var(--blue-deep);font-size:12px;font-weight:600;letter-spacing:.3px;box-shadow:var(--sh-1);}

  /* ===== 按钮 ===== */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;min-height:44px;padding:0 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,border-color .18s ease,color .18s ease;}
  .btn-primary{background:var(--blue);color:#FFFFFF;box-shadow:0 6px 18px rgba(22,69,123,.18);}
  .btn-primary:hover{background:var(--blue-deep);transform:translateY(-1px);box-shadow:var(--sh-3);}
  .btn-ghost{background:#FFFFFF;color:var(--blue);border-color:var(--line-2);}
  .btn-ghost:hover{border-color:var(--blue);background:var(--soft);transform:translateY(-1px);}
  .btn-neon{background:var(--neon);color:#06231F;}
  .btn-neon:hover{background:#67E0D4;transform:translateY(-1px);box-shadow:0 0 16px rgba(79,209,197,.55);}
  .btn:active{transform:translateY(0);}
  .btn:focus-visible,a:focus-visible,button:focus-visible{outline:2px solid var(--blue);outline-offset:3px;}
  .link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--blue);font-weight:600;font-size:15px;}
  .link-arrow .arw{transition:transform .2s ease;}
  .link-arrow:hover .arw{transform:translateX(3px);}

  /* ===== 横幅 ===== */
  .banner-wrap{padding:0 0 8px;}
  .banner{position:relative;border-radius:var(--r-big);overflow:hidden;min-height:260px;background:var(--blue-deep);box-shadow:var(--sh-2);}
  .banner img{width:100%;height:100%;min-height:260px;object-fit:cover;aspect-ratio:16/6;}
  .banner-mask{position:absolute;inset:0;background:rgba(11,18,32,.35);display:flex;flex-direction:column;justify-content:center;padding:40px 44px;}
  .banner-mask h2{margin:0;color:#FFFFFF;font-size:26px;line-height:1.4;font-weight:600;}
  .banner-mask p{margin-top:10px;max-width:620px;color:#DCE6F2;font-size:15px;line-height:1.8;}

  /* ===== 步骤条 ===== */
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:40px;}
  .step{position:relative;background:var(--card);border:1px solid var(--line-soft);border-radius:var(--r-card);padding:26px 24px 28px;box-shadow:var(--sh-2);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
  .step:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:var(--line-2);}
  .step-num{display:block;font-size:13px;font-weight:600;letter-spacing:.5px;color:var(--clay);}
  .step-line{display:block;width:34px;height:3px;border-radius:2px;background:var(--blue);margin:10px 0 14px;}
  .step h3{margin:0 0 8px;font-size:19px;line-height:1.45;font-weight:600;color:var(--text);}
  .step p{font-size:14px;line-height:1.7;color:var(--sub);}

  /* ===== 图文内容块 ===== */
  .content-block{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
  .content-block + .content-block{margin-top:64px;}
  .content-block .media{order:2;}
  .content-block.reverse .media{order:-1;}
  .content-block .text{order:1;}
  .media{border-radius:var(--r-big);overflow:hidden;background:var(--soft);border:1px solid var(--line-soft);box-shadow:var(--sh-2);}
  .media img{width:100%;aspect-ratio:16/11;object-fit:cover;}
  .body-text{margin-top:18px;font-size:16px;line-height:1.85;color:var(--sub);}
  .body-text + .body-text{margin-top:12px;}
  .point-list{margin-top:22px;display:grid;gap:12px;}
  .point-list li{position:relative;padding-left:22px;font-size:15px;line-height:1.7;color:var(--text);}
  .point-list li::before{content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:50%;background:var(--blue);}

  /* ===== 清单 + 对照表 ===== */
  .prepare-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:56px;align-items:start;margin-top:40px;}
  .check-list{display:grid;gap:0;background:var(--card);border:1px solid var(--line-soft);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;}
  .check-list li{display:flex;gap:14px;padding:18px 22px;border-bottom:1px solid var(--line-soft);font-size:15px;line-height:1.7;color:var(--text);}
  .check-list li:last-child{border-bottom:0;}
  .check-list li .dot{flex:none;width:22px;height:22px;margin-top:3px;border-radius:50%;background:#E8F0FA;color:var(--blue);font-size:12px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;}
  .table-wrap{overflow-x:auto;border:1px solid var(--line-soft);border-radius:var(--r-card);background:var(--card);box-shadow:var(--sh-1);}
  .table-wrap table{width:100%;border-collapse:collapse;min-width:540px;}
  .table-wrap thead th{background:var(--soft);color:var(--blue-deep);font-size:14px;font-weight:600;text-align:left;padding:15px 20px;border-bottom:1px solid var(--line-soft);white-space:nowrap;}
  .table-wrap tbody td{padding:15px 20px;font-size:14px;line-height:1.7;color:var(--sub);border-bottom:1px solid var(--line-soft);}
  .table-wrap tbody tr:last-child td{border-bottom:0;}
  .table-wrap tbody tr:hover td{background:#FAFCFF;color:var(--text);}

  /* ===== FAQ ===== */
  .faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
  .faq-layout .faq-side .lead{margin-top:16px;}
  .faq-list{display:grid;gap:14px;}
  .faq-item{background:var(--card);border:1px solid var(--line-soft);border-left:3px solid var(--blue);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:box-shadow .2s ease;}
  .faq-item:hover{box-shadow:var(--sh-2);}
  .faq-q{display:flex;align-items:center;gap:14px;width:100%;padding:20px 24px;background:none;border:0;text-align:left;cursor:pointer;font-size:17px;line-height:1.5;font-weight:600;color:var(--text);}
  .faq-q .idx{flex:none;font-size:13px;font-weight:600;color:var(--clay);letter-spacing:.4px;}
  .faq-q .sign{margin-left:auto;flex:none;width:26px;height:26px;border-radius:50%;background:var(--soft);color:var(--blue);display:inline-flex;align-items:center;justify-content:center;font-size:18px;line-height:1;transition:transform .25s ease,background-color .2s ease;}
  .faq-item.open .faq-q .sign{transform:rotate(45deg);background:#E8F0FA;}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
  .faq-a p{padding:0 24px 20px 62px;font-size:15px;line-height:1.85;color:var(--sub);}

  /* ===== 内链卡 ===== */
  .link-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px;}
  .link-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line-soft);border-radius:var(--r-card);padding:26px 24px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
  .link-card:hover{transform:translateY(-2px);box-shadow:var(--sh-3);border-color:var(--line-2);}
  .link-card .tag-blue{align-self:flex-start;}
  .link-card h3{margin:14px 0 8px;font-size:18px;font-weight:600;color:var(--text);}
  .link-card p{font-size:14px;line-height:1.7;color:var(--sub);}
  .link-card .go{margin-top:18px;font-size:14px;font-weight:600;color:var(--blue);display:inline-flex;align-items:center;gap:6px;}
  .link-card:hover .go .arw{transform:translateX(3px);}
  .link-card .go .arw{transition:transform .2s ease;}

  /* ===== CTA ===== */
  .cta-band{margin:0 0 0;padding:0 0 88px;}
  .cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:44px 48px;border-radius:var(--r-big);background:var(--dark);overflow:hidden;}
  .cta-inner::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,var(--neon),rgba(79,209,197,0));}
  .cta-inner h2{margin:0;font-size:28px;line-height:1.4;font-weight:600;color:#FFFFFF;}
  .cta-inner p{margin-top:10px;max-width:520px;font-size:14px;line-height:1.8;color:#A9B6C8;}

  /* ===== 页脚 ===== */
  .site-footer{position:relative;background:var(--dark);color:#A9B6C8;padding:56px 0 26px;}
  .site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,var(--neon) 0%,rgba(79,209,197,.3) 45%,rgba(79,209,197,0) 80%);}
  .footer-grid{display:grid;grid-template-columns:1.35fr .85fr 1.2fr 1.15fr;gap:40px;}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#FFFFFF;font-size:17px;font-weight:700;}
  .footer-desc{margin-top:14px;font-size:14px;line-height:1.8;color:#A9B6C8;max-width:260px;}
  .footer-col h3{position:relative;margin:0 0 16px;padding-left:22px;font-size:14px;font-weight:600;color:#E8EEF6;}
  .footer-col h3::before{content:"";position:absolute;left:0;top:9px;width:14px;height:2px;border-radius:1px;background:var(--neon);}
  .footer-links li a{display:inline-block;font-size:14px;line-height:2.1;color:#A9B6C8;transition:color .2s ease,transform .2s ease;}
  .footer-links li a:hover{color:#FFFFFF;transform:translateX(2px);}
  .footer-info{display:grid;gap:10px;font-size:14px;line-height:1.75;color:#A9B6C8;}
  .footer-info strong{color:#E8EEF6;font-weight:500;}
  .footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);font-size:13px;color:#8A97A8;}

  /* ===== 响应式 ===== */
  @media (max-width:1023px){
    :root{--header-h:64px;}
    .container{padding:0 24px;}
    .section{padding:72px 0;}
    .nav-toggle{display:flex;}
    .nav-links{position:fixed;left:0;right:0;top:var(--header-h);bottom:0;display:flex;flex-direction:column;align-items:stretch;gap:0;padding:14px 24px 40px;background:var(--dark);transform:translateX(-100%);visibility:hidden;transition:transform .28s ease,visibility .28s ease;overflow-y:auto;}
    .nav-links.open{transform:none;visibility:visible;}
    .nav-link{height:56px;font-size:16px;padding:0 16px;border-left:4px solid transparent;border-radius:0;}
    .nav-link::after{display:none;}
    .nav-link.active{border-left-color:var(--neon);text-shadow:none;}
    .nav-cta{margin:18px 0 0;height:48px;font-size:15px;}
    .hero-grid{grid-template-columns:1fr;gap:36px;}
    .page-title{font-size:34px;}
    .h2-bar{font-size:26px;}
    .content-block{grid-template-columns:1fr;gap:32px;}
    .content-block .media,.content-block.reverse .media{order:-1;}
    .content-block + .content-block{margin-top:56px;}
    .steps{grid-template-columns:repeat(2,1fr);}
    .prepare-grid{grid-template-columns:1fr;gap:36px;}
    .faq-layout{grid-template-columns:1fr;gap:32px;}
    .link-cards{grid-template-columns:1fr;gap:18px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .cta-inner{flex-direction:column;align-items:flex-start;padding:36px 32px;}
    .banner-mask{padding:32px;}
    .banner img{aspect-ratio:16/8;}
  }
  @media (max-width:639px){
    :root{--header-h:60px;}
    .container{padding:0 18px;}
    .section{padding:56px 0;}
    .brand{font-size:16px;}
    .brand-suffix{display:none;}
    .brand-mark{width:30px;height:30px;font-size:12px;}
    .nav-fade{height:72px;}
    .page-hero{padding:20px 0 52px;}
    .page-title{font-size:29px;line-height:1.3;}
    .hero-lead{font-size:16px;margin-top:16px;}
    .hero-actions{gap:12px;}
    .btn{width:100%;}
    .h2-bar{font-size:23px;padding-left:14px;}
    .h3-line{font-size:18px;}
    .steps{grid-template-columns:1fr;gap:16px;}
    .step{padding:22px 20px;}
    .banner{min-height:200px;}
    .banner img{min-height:200px;aspect-ratio:auto;height:200px;}
    .banner-mask{padding:24px 22px;}
    .banner-mask h2{font-size:20px;}
    .banner-mask p{font-size:13px;}
    .faq-q{font-size:16px;padding:18px 18px;gap:10px;}
    .faq-a p{padding:0 18px 18px 48px;}
    .cta-inner{padding:30px 22px;}
    .cta-inner h2{font-size:22px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .footer-bottom{flex-direction:column;gap:8px;}
  }