/* roulang page: index */
:root{
    --brand:#2D3BCB; --brand-600:#2331A8; --brand-050:#EEF0FE;
    --teal:#0FB6A8; --accent:#FF7A3D; --accent-600:#E9611F;
    --ink:#0E1524; --ink-2:#4C566B; --ink-3:#8A93A6;
    --line:#E3E7F2; --bg:#F5F7FB; --surface:#FFFFFF; --surface-2:#FAFBFE;
    --shadow-1:0 1px 2px rgba(18,26,58,.05), 0 8px 24px -14px rgba(18,26,58,.16);
    --shadow-2:0 2px 4px rgba(18,26,58,.06), 0 18px 40px -20px rgba(18,26,58,.24);
    --ok:#12B886; --warn:#F0A020; --err:#E5484D;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;background:var(--bg);color:var(--ink);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
    font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
  h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  .num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}
  .wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
  .sec{padding:96px 0}
  .sec-tight{padding:72px 0}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
    color:var(--brand);background:var(--brand-050);border-radius:999px;padding:6px 14px;letter-spacing:.02em;
  }
  .h2{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
  .h3{font-size:20px;line-height:1.4;font-weight:600}
  .lead{color:var(--ink-2);font-size:16px;line-height:1.8}
  .muted{color:var(--ink-3);font-size:14px;line-height:1.7}
  .micro{color:var(--ink-3);font-size:12.5px;line-height:1.6}

  /* ---------- header / nav ---------- */
  .site-header{
    position:fixed;inset:0 0 auto 0;z-index:60;height:72px;
    background:rgba(255,255,255,.62);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    backdrop-filter:blur(14px) saturate(140%);
    border-bottom:1px solid rgba(45,59,203,.12);
    box-shadow:0 6px 22px -18px rgba(18,26,58,.34);
    transition:height .2s ease-out,background .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .site-header.is-stuck{
    height:64px;background:rgba(255,255,255,.94);
    border-bottom-color:var(--line);
    box-shadow:0 10px 30px -20px rgba(18,26,58,.42);
  }
  .nav-inner{height:100%;display:flex;align-items:center;gap:28px}
  .logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
  .logo-mark{
    width:34px;height:34px;border-radius:10px;position:relative;
    background:linear-gradient(135deg,var(--brand) 0%,var(--brand-600) 100%);
    box-shadow:0 6px 16px -10px rgba(45,59,203,.9);
  }
  .logo-mark::after{
    content:"";position:absolute;right:-3px;bottom:-3px;width:13px;height:13px;border-radius:5px;
    background:var(--accent);border:2px solid #fff;
  }
  .logo-text{font-size:17px;font-weight:800;letter-spacing:-.01em;white-space:nowrap}
  .logo-sub{display:block;font-size:11px;font-weight:500;color:var(--ink-3);letter-spacing:.08em;line-height:1.2}
  .nav-links{display:flex;align-items:center;gap:6px;margin-left:8px}
  .nav-link{
    position:relative;padding:10px 14px;border-radius:10px;font-size:15px;color:var(--ink-2);
    transition:color .18s ease-out,background .18s ease-out;
  }
  .nav-link:hover{color:var(--brand);background:var(--brand-050)}
  .nav-link.active{color:var(--brand);font-weight:600}
  .nav-link.active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;background:var(--brand);
  }
  .nav-right{margin-left:auto;display:flex;align-items:center;gap:10px}
  .icon-btn{
    width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
    border:1px solid var(--line);background:#fff;color:var(--ink-2);
    transition:border-color .18s ease-out,color .18s ease-out,background .18s ease-out,transform .18s ease-out;
  }
  .icon-btn:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-050)}
  .icon-btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
  .burger{display:none}
  .search-wrap{position:relative;display:flex;align-items:center}
  .search-input{
    width:0;opacity:0;padding:0;height:42px;border:1px solid var(--line);border-radius:12px;background:#fff;
    transition:width .22s ease-out,opacity .22s ease-out,padding .22s ease-out,margin .22s ease-out;
    margin-left:0;font-size:14px;color:var(--ink);
  }
  .search-wrap.open .search-input{width:200px;opacity:1;padding:0 14px;margin-left:6px}
  .search-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(45,59,203,.18)}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:12px;padding:13px 24px;font-size:15px;font-weight:600;line-height:1;
    transition:transform .18s ease-out,background .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
    white-space:nowrap;
  }
  .btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px -16px rgba(233,97,31,.95)}
  .btn-primary:hover{background:var(--accent-600);transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(1px)}
  .btn-ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}
  .btn-ghost:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-050)}
  .btn-ghost:active{transform:translateY(1px)}
  .btn-link{color:var(--brand);font-weight:600;padding:8px 4px;display:inline-flex;align-items:center;gap:6px}
  .btn-link:hover{gap:10px;color:var(--brand-600)}
  .btn-sm{padding:10px 18px;font-size:14px}
  .btn-lg{padding:16px 30px;font-size:16px}

  /* ---------- hero ---------- */
  .hero{
    position:relative;min-height:78vh;display:flex;align-items:center;
    padding:132px 0 72px;overflow:hidden;
  }
  .hero-bg{
    position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;z-index:0;
  }
  .hero-bg::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(45,59,203,.06) 0%,rgba(45,59,203,.04) 46%,rgba(245,247,251,.94) 92%,#F5F7FB 100%);
  }
  .hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:center;width:100%}
  .hero h1{
    font-size:clamp(30px,4.2vw,52px);line-height:1.18;font-weight:800;letter-spacing:-.01em;margin:18px 0 16px;
  }
  .hero h1 em{font-style:normal;color:var(--brand)}
  .hero-sub{font-size:17px;color:var(--ink-2);line-height:1.8;max-width:560px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
  .hero-note{display:flex;align-items:center;gap:8px;margin-top:18px}
  .hero-visual{position:relative}
  .device-card{
    border-radius:24px;overflow:hidden;background:#fff;
    border:1px solid rgba(255,255,255,.6);
    box-shadow:0 30px 70px -40px rgba(18,26,58,.55);
  }
  .device-card img{width:100%;aspect-ratio:16/11;object-fit:cover;background:#E9EDF7}
  .float-chip{
    position:absolute;left:-18px;bottom:26px;display:flex;align-items:center;gap:10px;
    background:rgba(255,255,255,.82);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
    border:1px solid rgba(255,255,255,.8);border-radius:14px;padding:12px 16px;box-shadow:var(--shadow-1);
  }
  .chip-dot{width:10px;height:10px;border-radius:999px;background:var(--teal);box-shadow:0 0 0 4px rgba(15,182,168,.16)}

  .stat-bar{
    position:relative;z-index:1;margin-top:52px;display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  }
  .stat{
    background:rgba(255,255,255,.86);border:1px solid var(--line);border-radius:16px;
    padding:18px 20px;box-shadow:var(--shadow-1);
  }
  .stat b{display:block;font-size:clamp(22px,2.6vw,30px);font-weight:800;letter-spacing:-.01em;color:var(--brand)}
  .stat span{display:block;margin-top:4px;font-size:13.5px;color:var(--ink-3)}

  /* ---------- trust badges ---------- */
  .trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface)}
  .trust-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;padding:20px 0}
  .badge{
    display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:var(--surface-2);
    border-radius:999px;padding:8px 16px;font-size:13.5px;color:var(--ink-2);
  }
  .badge svg{color:var(--teal)}

  /* ---------- feature blocks ---------- */
  .split{display:grid;gap:48px;align-items:center}
  .split-7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
  .split-5-7{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
  .split-rev .split-media{order:2}
  .media-frame{
    border-radius:16px;overflow:hidden;background:#E9EDF7;box-shadow:var(--shadow-2);
  }
  .media-frame img{width:100%;aspect-ratio:16/10;object-fit:cover}
  .feat-list{margin-top:22px;display:grid;gap:14px}
  .feat-list li{display:flex;gap:12px;align-items:flex-start}
  .tick{
    flex:0 0 auto;width:24px;height:24px;border-radius:999px;background:var(--brand-050);color:var(--brand);
    display:grid;place-items:center;margin-top:4px;
  }
  .grid-21{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:24px;margin-top:56px}
  .card{
    background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-1);
    transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
  }
  .card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#D8DEF0}
  .card-pad{padding:28px}
  .card-img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#E9EDF7;border-radius:16px 16px 0 0}
  .tag{
    display:inline-flex;align-items:center;border-radius:999px;background:var(--brand-050);color:var(--brand);
    font-size:12.5px;font-weight:600;padding:4px 12px;line-height:1.6;
  }
  .tag-teal{background:rgba(15,182,168,.12);color:#0A8F85}

  /* ---------- screenshots carousel ---------- */
  .shot-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
  .shot-ctrl{display:flex;gap:10px}
  .shot-track{
    display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
    padding:8px 4px 22px;margin-top:32px;scrollbar-width:none;
  }
  .shot-track::-webkit-scrollbar{display:none}
  .shot-track:focus-visible{outline:2px solid var(--brand);outline-offset:4px;border-radius:16px}
  .shot-card{
    flex:0 0 380px;scroll-snap-align:start;background:var(--surface);border:1px solid var(--line);
    border-radius:16px;overflow:hidden;box-shadow:var(--shadow-1);
    transition:box-shadow .18s ease-out,transform .18s ease-out;
  }
  .shot-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
  .shot-card img{width:100%;aspect-ratio:3/2;object-fit:cover;background:#E9EDF7}
  .shot-body{padding:20px 22px 24px}
  .dots{display:flex;gap:8px;justify-content:center;margin-top:6px}
  .dot{width:8px;height:8px;border-radius:999px;background:#CFD6EA;transition:width .18s ease-out,background .18s ease-out}
  .dot.on{width:24px;background:var(--brand)}

  /* ---------- system requirements ---------- */
  .spec-list{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--surface);box-shadow:var(--shadow-1)}
  .spec-row{
    display:grid;grid-template-columns:56px minmax(0,1fr) minmax(0,1.2fr);gap:18px;align-items:center;
    padding:20px 24px;border-bottom:1px solid var(--line);
  }
  .spec-row:last-child{border-bottom:0}
  .spec-row:nth-child(even){background:var(--surface-2)}
  .spec-ico{
    width:44px;height:44px;border-radius:12px;background:var(--brand-050);color:var(--brand);display:grid;place-items:center;
  }
  .spec-name{font-weight:600}
  .spec-req{color:var(--ink-2);font-size:14.5px}

  /* ---------- reviews ---------- */
  .review-grid{columns:2;column-gap:24px;margin-top:40px}
  .review{
    break-inside:avoid;margin-bottom:24px;background:var(--surface);border:1px solid var(--line);
    border-radius:16px;padding:24px;box-shadow:var(--shadow-1);
    transition:box-shadow .18s ease-out,transform .18s ease-out;
  }
  .review:hover{box-shadow:var(--shadow-2);transform:translateY(-2px)}
  .review.deep{box-shadow:var(--shadow-2);background:var(--surface-2)}
  .review-top{display:flex;align-items:center;gap:12px}
  .avatar{
    width:44px;height:44px;border-radius:999px;display:grid;place-items:center;color:#fff;font-weight:700;font-size:16px;
    background:linear-gradient(135deg,var(--brand),#5A66E0);flex:0 0 auto;
  }
  .avatar.a2{background:linear-gradient(135deg,#0FB6A8,#3ED0C3)}
  .avatar.a3{background:linear-gradient(135deg,#FF7A3D,#FFA06E)}
  .avatar.a4{background:linear-gradient(135deg,#4C566B,#79839A)}
  .stars{color:var(--warn);font-size:14px;letter-spacing:2px}
  .review p{margin-top:14px;color:var(--ink-2);font-size:14.5px;line-height:1.85}

  /* ---------- CMS list ---------- */
  .post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:36px}
  .post-grid .post-feature{grid-column:span 3}
  .post-feature .post-link{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);align-items:stretch}
  .post-feature .post-cover{height:100%;aspect-ratio:16/9}
  .post-feature .post-cover img{height:100%;aspect-ratio:auto}
  .post-link{display:flex;flex-direction:column;height:100%}
  .post-cover{aspect-ratio:16/10;background:#E9EDF7;overflow:hidden;border-radius:16px 16px 0 0}
  .post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
  .post-link:hover .post-cover img{transform:scale(1.04)}
  .post-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
  .post-title{font-size:17px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .18s ease-out}
  .post-link:hover .post-title{color:var(--brand)}
  .post-sum{color:var(--ink-2);font-size:14px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .post-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:6px}
  .empty-box{
    grid-column:span 3;border:1px dashed var(--line);border-radius:16px;background:var(--surface);
    padding:56px 24px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px;
  }

  /* ---------- FAQ ---------- */
  .faq-list{margin-top:36px;border-top:1px solid var(--line)}
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;gap:18px;
    padding:22px 4px;font-size:17px;font-weight:600;color:var(--ink);
    transition:color .18s ease-out,background .18s ease-out;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--brand)}
  .faq-item summary::after{
    content:"+";margin-left:auto;font-size:22px;font-weight:400;color:var(--ink-3);
    transition:transform .2s ease-out,color .2s ease-out;
  }
  .faq-item[open]{background:var(--surface-2)}
  .faq-item[open] summary{color:var(--ink);font-weight:700}
  .faq-item[open] summary::after{transform:rotate(45deg);color:var(--brand)}
  .faq-answer{padding:0 4px 24px;color:var(--ink-2);font-size:15.5px;line-height:1.9;max-width:860px}

  /* ---------- download band ---------- */
  .dl-band{
    background:var(--brand-050);border-radius:24px;padding:56px 40px;border:1px solid #DCE1FB;
    display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:40px;align-items:center;
  }
  .dl-actions{display:grid;gap:14px}
  .dl-btn{
    display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);border-radius:16px;
    padding:18px 22px;box-shadow:var(--shadow-1);
    transition:box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
  }
  .dl-btn:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#CBD3F2}
  .dl-btn:active{transform:translateY(0)}
  .dl-btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
  .dl-ico{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;background:var(--brand);color:#fff;flex:0 0 auto}
  .dl-ico.orange{background:var(--accent)}
  .dl-txt b{display:block;font-size:16px;font-weight:700}
  .dl-txt span{display:block;font-size:12.5px;color:var(--ink-3);margin-top:2px}
  .dl-arrow{margin-left:auto;color:var(--ink-3);transition:color .18s ease-out,transform .18s ease-out}
  .dl-btn:hover .dl-arrow{color:var(--brand);transform:translateX(3px)}
  .safe-line{display:flex;align-items:center;gap:10px;margin-top:16px;color:var(--ink-2);font-size:13.5px}
  .alt-line{margin-top:12px;font-size:13.5px;color:var(--ink-3)}
  .alt-line a{color:var(--brand);border-bottom:1px solid rgba(45,59,203,.35)}

  /* ---------- footer ---------- */
  .site-footer{background:#0E1524;color:#C7CDDE;margin-top:96px}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding:72px 0 48px}
  .footer-brand .logo-text{color:#fff}
  .footer-brand .logo-sub{color:#8A93A6}
  .footer-desc{margin-top:18px;font-size:14px;line-height:1.85;color:#9AA3B8;max-width:320px}
  .footer-title{font-size:14px;font-weight:700;color:#fff;letter-spacing:.02em;margin-bottom:16px}
  .footer-links li{margin-bottom:10px}
  .footer-links a{font-size:14px;color:#9AA3B8;transition:color .18s ease-out}
  .footer-links a:hover{color:#fff}
  .footer-bar{
    border-top:1px solid rgba(255,255,255,.1);padding:22px 0;display:flex;flex-wrap:wrap;gap:14px;
    align-items:center;justify-content:space-between;font-size:13px;color:#8A93A6;
  }
  .social{display:flex;gap:10px}
  .social a{
    width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
    border:1px solid rgba(255,255,255,.16);color:#C7CDDE;transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
  }
  .social a:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.32)}

  /* ---------- drawer ---------- */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(14,21,36,.42);opacity:0;visibility:hidden;z-index:70;
    transition:opacity .22s ease-out,visibility .22s ease-out;
  }
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);z-index:80;
    background:rgba(255,255,255,.9);-webkit-backdrop-filter:blur(18px) saturate(150%);backdrop-filter:blur(18px) saturate(150%);
    border-left:1px solid var(--line);box-shadow:-20px 0 60px -30px rgba(18,26,58,.6);
    transform:translateX(102%);transition:transform .26s ease-out;padding:24px;display:flex;flex-direction:column;gap:8px;
  }
  body.nav-open .drawer{transform:translateX(0)}
  body.nav-open .drawer-mask{opacity:1;visibility:visible}
  .drawer a.drawer-link{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    padding:15px 14px;border-radius:12px;font-size:16px;color:var(--ink-2);font-weight:500;
    transition:background .18s ease-out,color .18s ease-out;
  }
  .drawer a.drawer-link:hover,.drawer a.drawer-link.active{background:var(--brand-050);color:var(--brand)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
  .drawer .btn{width:100%;margin-top:10px}

  section[id]{scroll-margin-top:96px}
  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  }

  /* ---------- responsive ---------- */
  @media (max-width:1180px){
    .hero-inner{gap:40px}
  }
  @media (max-width:1023px){
    .nav-links{display:none}
    .burger{display:grid}
    .search-wrap{display:none}
    .hero{min-height:auto;padding:120px 0 64px}
    .hero-inner{grid-template-columns:1fr;gap:36px}
    .hero-visual{order:-1}
    .float-chip{left:12px;bottom:14px;padding:10px 14px}
    .split-7-5,.split-5-7{grid-template-columns:1fr;gap:28px}
    .split-rev .split-media{order:0}
    .grid-21{grid-template-columns:1fr}
    .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    .post-grid .post-feature{grid-column:span 2}
    .post-feature .post-link{grid-template-columns:1fr}
    .post-feature .post-cover{aspect-ratio:16/9}
    .dl-band{grid-template-columns:1fr;padding:40px 28px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 36px}
  }
  @media (max-width:767px){
    .sec{padding:64px 0}
    .sec-tight{padding:52px 0}
    .wrap{padding:0 18px}
    .stat-bar{grid-template-columns:repeat(2,1fr);gap:12px}
    .trust-row{justify-content:flex-start}
    .spec-row{grid-template-columns:44px minmax(0,1fr);row-gap:6px;padding:18px}
    .spec-req{grid-column:2}
    .review-grid{columns:1}
    .post-grid{grid-template-columns:1fr}
    .post-grid .post-feature{grid-column:span 1}
    .card-pad{padding:22px}
    .shot-card{flex:0 0 84vw}
    .faq-item summary{font-size:16px;gap:12px;padding:18px 2px}
  }
  @media (max-width:639px){
    .hero h1{font-size:clamp(28px,7.6vw,34px)}
    .hero-actions .btn{flex:1 1 100%}
    .logo-text{font-size:15px}
    .dl-band{padding:32px 20px}
    .footer-grid{grid-template-columns:1fr;gap:28px}
    .footer-bar{flex-direction:column;align-items:flex-start}
  }

/* roulang page: article */
:root{
  --brand:#2D3BCB; --brand-600:#2331A8; --brand-050:#EEF0FE;
  --teal:#0FB6A8; --accent:#FF7A3D; --accent-600:#E9611F;
  --ink:#0E1524; --ink-2:#4C566B; --ink-3:#8A93A6;
  --line:#E3E7F2; --bg:#F5F7FB; --surface:#FFFFFF; --surface-2:#FAFBFE;
  --ok:#12B886; --warn:#F0A020; --err:#E5484D;
  --shadow-1:0 1px 2px rgba(18,26,58,.05), 0 8px 24px -14px rgba(18,26,58,.16);
  --shadow-2:0 2px 4px rgba(18,26,58,.06), 0 18px 40px -20px rgba(18,26,58,.24);
  --r-card:16px; --r-lg:24px; --r-btn:12px;
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font-cn);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;color:inherit}
ul,ol{margin:0}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3}
p{margin:0}
input{font:inherit}
strong{font-weight:700}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:10px}
[id]{scroll-margin-top:96px}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";font-family:Inter,-apple-system,"PingFang SC",sans-serif}

/* ---------- header / nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;height:72px;
  display:flex;align-items:center;
  background:rgba(255,255,255,.62);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(45,59,203,.12);
  box-shadow:0 8px 26px -22px rgba(18,26,58,.55);
  transition:height .18s ease-out,background .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.site-header.is-stuck{
  height:64px;background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:0 12px 32px -24px rgba(18,26,58,.6);
}
.nav-inner{display:flex;align-items:center;gap:20px;width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:34px;height:34px;border-radius:11px;flex:0 0 auto;position:relative;
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-600) 52%,var(--accent) 100%);
  box-shadow:0 8px 18px -10px rgba(45,59,203,.7);
}
.logo-mark::after{
  content:"";position:absolute;left:11px;top:11px;width:12px;height:12px;
  border-radius:4px;background:rgba(255,255,255,.94);
}
.logo-text{display:flex;flex-direction:column;font-size:16px;font-weight:800;line-height:1.15;letter-spacing:-.01em;color:var(--ink)}
.logo-sub{font-size:11.5px;font-weight:500;color:var(--ink-3);letter-spacing:.02em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:4px;margin:0 auto}
.nav-link{position:relative;padding:10px 13px;font-size:15px;color:var(--ink-2);border-radius:10px;transition:color .18s ease-out,background .18s ease-out}
.nav-link:hover{color:var(--brand);background:var(--brand-050)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;background:var(--brand)}
.nav-right{display:flex;align-items:center;gap:10px;margin-left:auto}
.search-wrap{display:flex;align-items:center;gap:4px;padding:2px;border:1px solid transparent;border-radius:999px;background:rgba(255,255,255,.66);transition:background .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out}
.search-wrap.is-open{background:#fff;border-color:var(--line);box-shadow:var(--shadow-1)}
.search-input{
  width:0;opacity:0;height:36px;border:0;outline:none;background:transparent;
  font-size:14px;color:var(--ink);transition:width .2s ease-out,opacity .2s ease-out;
}
.search-input::placeholder{color:var(--ink-3)}
.search-wrap.is-open .search-input{width:210px;opacity:1;padding:0 10px}
.icon-btn{
  width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;
  border:0;border-radius:999px;background:transparent;color:var(--ink-2);
  transition:background .18s ease-out,color .18s ease-out;
}
.icon-btn:hover{background:var(--brand-050);color:var(--brand)}
.burger{display:none}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);padding:14px 26px;font-size:15.5px;font-weight:600;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .18s ease-out,background .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 12px 26px -14px rgba(255,122,61,.85)}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-050)}
.btn-ghost{background:transparent;color:var(--brand);padding:14px 4px}
.btn-ghost:hover{color:var(--brand-600);gap:12px}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:10px}

/* ---------- drawer ---------- */
.overlay{
  position:fixed;inset:0;z-index:90;background:rgba(14,21,36,.42);
  opacity:0;visibility:hidden;transition:opacity .24s ease-out,visibility .24s ease-out;
}
.overlay.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;z-index:100;height:100%;width:min(86vw,330px);
  padding:22px 20px 28px;display:flex;flex-direction:column;gap:6px;
  background:rgba(255,255,255,.96);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  box-shadow:-22px 0 46px -26px rgba(18,26,58,.5);
  transform:translateX(102%);transition:transform .24s ease-out;overflow-y:auto;
}
.drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:14px;margin-bottom:8px;border-bottom:1px solid var(--line)}
.drawer-link{padding:13px 12px;border-radius:12px;font-size:16px;font-weight:600;color:var(--ink-2);transition:background .18s ease-out,color .18s ease-out}
.drawer-link:hover{background:var(--brand-050);color:var(--brand)}
.drawer-link.active{color:var(--brand);background:var(--brand-050)}
.drawer .btn{margin-top:16px}

/* ---------- page head ---------- */
main{padding-top:72px}
.page-head{padding:44px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3)}
.breadcrumb a{color:var(--ink-2);transition:color .18s ease-out}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#C3C9DA}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  background:var(--brand-050);color:var(--brand);font-size:12.5px;font-weight:600;
}
.badge-teal{background:rgba(15,182,168,.12);color:#0A8B80}

/* ---------- article layout ---------- */
.article-wrap{width:100%;max-width:760px;margin:0 auto;padding:0 24px}
.article-title{
  font-size:clamp(26px,3.4vw,38px);line-height:1.3;font-weight:800;
  letter-spacing:-.01em;color:var(--ink);margin:16px 0 18px;
}
.article-summary{font-size:15.5px;color:var(--ink-2);line-height:1.85;margin-bottom:18px}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;
  font-size:13.5px;color:var(--ink-3);padding-bottom:22px;border-bottom:1px solid var(--line);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#CBD2E4}
.article-fig{margin:26px 0 0}
.article-fig .frame{aspect-ratio:16/9;border-radius:14px;overflow:hidden;background:#E9EDF7;box-shadow:var(--shadow-1)}
.article-fig img{width:100%;height:100%;object-fit:cover}
.article-fig figcaption{margin-top:10px;font-size:12.5px;color:var(--ink-3);text-align:center}

.article-body{padding:30px 0 6px;font-size:17.5px;line-height:1.9;color:var(--ink-2)}
.article-body > * + *{margin-top:20px}
.article-body h2{
  position:relative;padding-left:16px;margin-top:44px;
  font-size:clamp(21px,2.4vw,26px);line-height:1.4;font-weight:700;color:var(--ink);
}
.article-body h2::before{content:"";position:absolute;left:0;top:.3em;width:4px;height:1.05em;border-radius:2px;background:var(--brand)}
.article-body h3{font-size:19px;font-weight:600;color:var(--ink);margin-top:32px}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin-top:26px}
.article-body p{color:var(--ink-2)}
.article-body strong{color:var(--ink)}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(45,59,203,.28);transition:color .18s ease-out,border-color .18s ease-out}
.article-body a:hover{color:var(--brand-600);border-bottom-color:var(--brand-600)}
.article-body ul,.article-body ol{padding-left:24px}
.article-body li+li{margin-top:8px}
.article-body blockquote{
  margin:0;padding:16px 20px;border-left:3px solid var(--brand);
  background:var(--brand-050);border-radius:0 12px 12px 0;color:var(--ink);
}
.article-body img{border-radius:12px;margin-left:auto;margin-right:auto}
.article-body figure{margin:26px 0}
.article-body figcaption{margin-top:10px;font-size:12.5px;color:var(--ink-3);text-align:center}
.article-body hr{border:0;border-top:1px solid var(--line);margin:32px 0}
.article-body table{
  width:100%;display:block;overflow-x:auto;border-collapse:collapse;font-size:15px;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;min-width:110px}
.article-body thead th{background:var(--surface-2);color:var(--ink);font-weight:600}
.article-body pre{background:#0E1524;color:#E7EAF6;padding:16px 18px;border-radius:12px;overflow-x:auto;font-size:14px;line-height:1.7}
.article-body code{background:var(--brand-050);color:var(--brand-600);padding:2px 6px;border-radius:6px;font-size:.92em}
.article-body pre code{background:transparent;color:inherit;padding:0}

.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;text-align:center;
  padding:56px 28px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--shadow-1);
}
.empty-state .ico{width:52px;height:52px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;background:var(--brand-050);color:var(--brand)}
.empty-state h2{font-size:20px;color:var(--ink)}
.empty-state p{font-size:14.5px;color:var(--ink-2);max-width:44ch}

/* ---------- inline cta ---------- */
.inline-cta{
  margin:44px 0 0;padding:30px 26px;text-align:center;
  background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-1);
}
.inline-cta .kicker{font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--teal);text-transform:uppercase}
.inline-cta h3{margin:10px 0 8px;font-size:22px;color:var(--ink)}
.inline-cta p{font-size:14.5px;color:var(--ink-2);max-width:46ch;margin:0 auto}
.inline-cta .actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:20px}

/* ---------- tags + meta bar ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:44px;padding-top:28px;border-top:1px solid var(--line)}
.tag-row .label{font-size:13px;color:var(--ink-3);margin-right:4px}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);font-size:13px;color:var(--ink-2);
  transition:border-color .18s ease-out,color .18s ease-out,background .18s ease-out;
}
.tag:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-050)}
.post-meta-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;margin-top:22px;
  padding:16px 20px;border-radius:14px;background:var(--surface-2);
  border:1px solid var(--line);font-size:13.5px;color:var(--ink-3);
}
.post-meta-bar b{color:var(--ink);font-weight:600}
.back-row{margin-top:26px}

/* ---------- related ---------- */
.related{width:100%;max-width:1000px;margin:0 auto;padding:72px 24px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:24px}
.section-head h2{font-size:clamp(22px,2.6vw,28px);color:var(--ink)}
.section-head .link{font-size:14px;color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:6px;transition:gap .18s ease-out}
.section-head .link:hover{gap:10px}
.card-grid{display:grid;gap:24px;grid-template-columns:repeat(3,minmax(0,1fr))}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.post-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D8DEF2}
.post-card-thumb{aspect-ratio:16/10;background:#E9EDF7;overflow:hidden}
.post-card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.post-card:hover .post-card-thumb img{transform:scale(1.03)}
.post-card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-card-title{
  font-size:17px;font-weight:600;line-height:1.45;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .18s ease-out;
}
.post-card:hover .post-card-title{color:var(--brand)}
.post-card-desc{
  font-size:14px;line-height:1.7;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--ink-3)}

/* ---------- faq ---------- */
.faq-block{width:100%;max-width:1000px;margin:0 auto;padding:72px 24px 0}
.faq-list{border-top:1px solid var(--line);background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:16px;font-weight:600;color:var(--ink);
  transition:background .18s ease-out,color .18s ease-out;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--surface-2)}
.faq-item summary .plus{
  flex:0 0 auto;width:24px;height:24px;position:relative;color:var(--brand);
  transition:transform .2s ease-out;
}
.faq-item summary .plus::before,
.faq-item summary .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;transform:translate(-50%,-50%);
}
.faq-item summary .plus::before{width:14px;height:2px}
.faq-item summary .plus::after{width:2px;height:14px}
.faq-item[open] summary{background:var(--surface-2)}
.faq-item[open] summary .plus{transform:rotate(45deg)}
.faq-body{padding:0 22px 20px;font-size:15px;color:var(--ink-2);line-height:1.85}

/* ---------- footer ---------- */
.site-footer{margin-top:96px;background:#fff;border-top:1px solid var(--line);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}
.footer-desc{margin-top:14px;font-size:14px;line-height:1.8;color:var(--ink-2);max-width:34ch}
.footer-title{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:14px}
.footer-links{list-style:none;padding:0;display:grid;gap:10px}
.footer-links a{font-size:14px;color:var(--ink-2);transition:color .18s ease-out}
.footer-links a:hover{color:var(--brand)}
.social{display:flex;gap:10px}
.social a{
  width:36px;height:36px;border-radius:999px;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink-2);
  transition:border-color .18s ease-out,color .18s ease-out,background .18s ease-out;
}
.social a:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-050)}
.footer-bar{
  margin-top:48px;padding:20px 0;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:12.5px;color:var(--ink-3);
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-links{display:none}
  .burger{display:inline-flex}
  .nav-right{margin-left:auto}
  .search-wrap.is-open .search-input{width:170px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  .wrap{padding:0 18px}
  .article-wrap{padding:0 18px}
  .related,.faq-block{padding-left:18px;padding-right:18px;padding-top:56px}
  .nav-inner{padding:0 18px}
  .logo-sub{display:none}
  .article-body{font-size:17px;line-height:1.9}
  .article-body h2{margin-top:36px}
  .site-footer{padding-top:52px}
  .footer-bar{margin-top:36px}
}
@media (max-width:639px){
  .card-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .search-wrap.is-open .search-input{width:120px}
  .article-title{font-size:clamp(24px,6.6vw,30px)}
  .inline-cta{padding:24px 18px}
  .inline-cta .actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
}

/* roulang page: category1 */
:root{
  --brand:#2D3BCB; --brand-600:#2331A8; --brand-050:#EEF0FE;
  --teal:#0FB6A8; --accent:#FF7A3D; --accent-600:#E9611F;
  --ink:#0E1524; --ink-2:#4C566B; --ink-3:#8A93A6;
  --line:#E3E7F2; --bg:#F5F7FB; --surface:#FFFFFF; --surface-2:#FAFBFE;
  --ok:#12B886; --warn:#F0A020; --err:#E5484D;
  --r-card:16px; --r-lg:24px; --r-btn:12px;
  --shadow-1:0 1px 2px rgba(18,26,58,.05), 0 8px 24px -14px rgba(18,26,58,.16);
  --shadow-2:0 2px 4px rgba(18,26,58,.06), 0 18px 40px -20px rgba(18,26,58,.24);
  --ease:180ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit}
.num{font-variant-numeric:tabular-nums}
.wrap{max-width:1200px;margin:0 auto;padding:0 24px}
section[id]{scroll-margin-top:96px}

/* ============ Header ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;height:72px;
  background:rgba(255,255,255,.62);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(45,59,203,.12);
  box-shadow:0 6px 18px -14px rgba(18,26,58,.4);
  transition:height var(--ease),background var(--ease),box-shadow var(--ease);
}
.site-header.is-stuck{
  height:64px;background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:0 10px 26px -18px rgba(18,26,58,.5);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:100%}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:30px;height:30px;border-radius:9px;background:var(--brand);position:relative;
  box-shadow:0 6px 14px -8px rgba(45,59,203,.9);
}
.logo-mark::after{
  content:"";position:absolute;right:-3px;bottom:-3px;width:13px;height:13px;
  border-radius:4px;background:var(--accent);border:2px solid #fff;
}
.logo-text{font-size:16px;font-weight:800;letter-spacing:-.01em;line-height:1.15;display:flex;flex-direction:column}
.logo-sub{font-size:11px;font-weight:500;color:var(--ink-3);letter-spacing:.02em}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:12px}
.nav-link{
  position:relative;padding:10px 12px;border-radius:10px;font-size:14.5px;color:var(--ink-2);
  transition:color var(--ease),background var(--ease);
}
.nav-link:hover{color:var(--brand);background:var(--brand-050)}
.nav-link.active{color:var(--brand);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;position:relative}
.search-wrap{display:flex;align-items:center;gap:6px;position:relative}
.search-input{
  width:0;opacity:0;pointer-events:none;height:40px;border-radius:10px;border:1px solid var(--line);
  padding:0 12px;font-size:14px;color:var(--ink);background:#fff;outline:none;
  transition:width var(--ease),opacity var(--ease);
}
.search-wrap.is-open .search-input{width:200px;opacity:1;pointer-events:auto}
.search-input:focus{border-color:var(--brand);box-shadow:0 0 0 2px rgba(45,59,203,.18)}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;border:1px solid transparent;background:transparent;color:var(--ink-2);
  cursor:pointer;transition:all var(--ease);
}
.icon-btn:hover{color:var(--brand);background:var(--brand-050);border-color:var(--line)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);border:1px solid transparent;cursor:pointer;
  font-size:15px;font-weight:600;padding:14px 26px;
  transition:transform var(--ease),background var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 12px 24px -16px rgba(255,122,61,.95)}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-050)}
.btn-ghost{background:transparent;color:var(--brand);padding:12px 6px}
.btn-ghost:hover{color:var(--brand-600)}
.btn-ghost svg{transition:transform var(--ease)}
.btn-ghost:hover svg{transform:translateX(4px)}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:10px}
.burger{display:none}

/* ============ Hero ============ */
.cat-hero{
  position:relative;padding:132px 0 56px;
  background-image:linear-gradient(180deg,rgba(45,59,203,.06),rgba(245,247,251,.94) 72%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;align-items:center}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3);margin-bottom:16px}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:var(--ink-3)}
.crumb .cur{color:var(--brand);font-weight:600}
.page-title{
  font-size:clamp(30px,4.2vw,52px);line-height:1.18;font-weight:800;letter-spacing:-.01em;
  margin:0 0 14px;max-width:20ch;
}
.page-sub{font-size:16px;line-height:1.8;color:var(--ink-2);max-width:52ch;margin:0}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;
  background:var(--brand-050);color:var(--brand);font-size:13px;font-weight:600;
}
.tag.tint-teal{background:rgba(15,182,168,.1);color:#0a8a80}
.tag.tint-accent{background:rgba(255,122,61,.12);color:var(--accent-600)}
.hero-media{
  border-radius:var(--r-card);overflow:hidden;background:#E9EDF7;aspect-ratio:4/3;
  box-shadow:var(--shadow-2);border:1px solid rgba(255,255,255,.7);
}
.hero-media img{width:100%;height:100%;object-fit:cover}

/* ============ Layout ============ */
.layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:40px;padding:64px 0 0;align-items:start}
.toc{
  position:sticky;top:96px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:20px;box-shadow:var(--shadow-1);
}
.toc-title{font-size:13px;font-weight:700;color:var(--ink-3);letter-spacing:.08em;margin:0 0 12px}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.toc-link{
  display:block;padding:9px 12px;border-radius:8px;font-size:14px;color:var(--ink-2);
  border-left:2px solid transparent;transition:all var(--ease);
}
.toc-link:hover{background:var(--surface-2);color:var(--brand)}
.toc-link.active{background:var(--brand-050);color:var(--brand);font-weight:600;border-left-color:var(--brand)}
.toc-foot{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:12.5px;color:var(--ink-3);line-height:1.7}

.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--shadow-1);margin-bottom:28px;
}
.panel:last-child{margin-bottom:0}
.eyebrow{font-size:12.5px;font-weight:700;letter-spacing:.1em;color:var(--brand);margin:0 0 8px}
.sec-title{font-size:clamp(24px,3vw,34px);line-height:1.25;font-weight:700;margin:0 0 14px;letter-spacing:-.01em}
.sec-lede{font-size:16px;color:var(--ink-2);margin:0 0 22px;max-width:64ch}
.body-text{font-size:16px;line-height:1.85;color:var(--ink-2);margin:0 0 16px}
.body-text strong{color:var(--ink)}

.check-list{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink-2)}
.check-list svg{flex:0 0 auto;margin-top:4px;color:var(--teal)}

/* ============ Steps ============ */
.steps{list-style:none;margin:8px 0 0;padding:0;position:relative}
.step{position:relative;padding:0 0 28px 34px}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:7px;top:22px;bottom:0;width:2px;background:var(--line);
}
.step:last-child::before{display:none}
.step-dot{
  position:absolute;left:0;top:6px;width:16px;height:16px;border-radius:999px;
  background:#fff;border:3px solid var(--brand);box-shadow:0 0 0 4px var(--brand-050);
}
.step:first-child .step-dot{border-color:var(--accent);box-shadow:0 0 0 4px rgba(255,122,61,.14)}
.step-title{font-size:17px;font-weight:700;margin:0 0 6px;display:flex;align-items:center;gap:8px}
.step-index{font-size:12.5px;font-weight:700;color:var(--brand);background:var(--brand-050);border-radius:999px;padding:2px 10px}
.step-text{font-size:15px;color:var(--ink-2);margin:0}

/* ============ Trouble list ============ */
.trouble-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.trouble-card{
  background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.trouble-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:#d8ddf0}
.trouble-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.trouble-head svg{color:var(--brand)}
.card-title{font-size:17px;font-weight:600;line-height:1.4;margin:0}
.trouble-text{font-size:14.5px;color:var(--ink-2);margin:0}

/* ============ Security split ============ */
.split{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:32px;align-items:center}
.split-media{border-radius:var(--r-card);overflow:hidden;background:#E9EDF7;aspect-ratio:16/10;box-shadow:var(--shadow-1)}
.split-media img{width:100%;height:100%;object-fit:cover}
.mini-list{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:10px}
.mini-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2)}
.mini-list span.dot{width:6px;height:6px;border-radius:999px;background:var(--brand);margin-top:9px;flex:0 0 auto}

/* ============ Tips ============ */
.tip-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.tip-card{
  border-radius:var(--r-card);padding:24px;border:1px solid transparent;
  background:rgba(45,59,203,.06);
}
.tip-card.alt{background:rgba(15,182,168,.09);border-color:rgba(15,182,168,.18)}
.tip-icon{
  width:40px;height:40px;border-radius:12px;background:#fff;display:flex;align-items:center;justify-content:center;
  color:var(--brand);box-shadow:var(--shadow-1);margin-bottom:14px;
}
.tip-card.alt .tip-icon{color:#0a8a80}
.tip-text{font-size:14.5px;color:var(--ink-2);margin:0}

/* ============ FAQ ============ */
.faq{border-top:1px solid var(--line);margin-top:6px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 44px 20px 0;position:relative;
  font-size:16.5px;font-weight:600;color:var(--ink);transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-item summary::after{
  content:"";position:absolute;right:14px;top:50%;width:12px;height:12px;
  border-right:2px solid var(--ink-3);border-bottom:2px solid var(--ink-3);
  transform:translateY(-70%) rotate(45deg);transition:transform var(--ease),border-color var(--ease);
}
.faq-item[open] summary{color:var(--brand);font-weight:700}
.faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg);border-color:var(--brand)}
.faq-body{padding:0 44px 22px 0;font-size:15px;color:var(--ink-2);background:var(--surface-2);margin:0 -32px;padding-left:32px;border-radius:0 0 12px 12px}
.faq-item[open]{background:var(--surface-2)}

/* ============ CTA ============ */
.cta-band{
  margin-top:36px;background:var(--brand-050);border-radius:var(--r-lg);
  padding:40px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:center;
}
.cta-title{font-size:clamp(22px,2.4vw,28px);font-weight:700;margin:0 0 8px;line-height:1.3}
.cta-text{font-size:15px;color:var(--ink-2);margin:0}
.cta-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.cta-note{font-size:12.5px;color:var(--ink-3);margin-top:14px}

/* ============ Footer ============ */
.site-footer{background:#fff;border-top:1px solid var(--line);margin-top:88px;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
.footer-brand .logo{margin-bottom:14px}
.footer-desc{font-size:14px;color:var(--ink-2);margin:0;max-width:34ch;line-height:1.8}
.footer-title{font-size:14px;font-weight:700;margin:0 0 14px}
.footer-links{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-links a{font-size:14px;color:var(--ink-2);transition:color var(--ease)}
.footer-links a:hover{color:var(--brand)}
.social{display:flex;gap:10px}
.social a{
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;
  color:var(--ink-2);transition:all var(--ease);
}
.social a:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-050)}
.footer-bar{
  border-top:1px solid var(--line);padding:20px 0 28px;display:flex;justify-content:space-between;gap:12px;
  font-size:12.5px;color:var(--ink-3);flex-wrap:wrap;
}

/* ============ Mobile nav ============ */
.nav-mask{
  position:fixed;inset:0;background:rgba(14,21,36,.42);opacity:0;pointer-events:none;
  transition:opacity var(--ease);z-index:70;
}
.nav-mask.is-open{opacity:1;pointer-events:auto}

@media (max-width:1023px){
  .burger{display:inline-flex}
  .nav-links{
    position:fixed;top:0;right:0;height:100vh;width:min(320px,86vw);z-index:90;
    flex-direction:column;align-items:stretch;gap:6px;margin:0;padding:88px 20px 32px;
    background:rgba(255,255,255,.96);
    -webkit-backdrop-filter:blur(16px) saturate(140%);backdrop-filter:blur(16px) saturate(140%);
    border-left:1px solid var(--line);box-shadow:-18px 0 40px -24px rgba(18,26,58,.5);
    transform:translateX(102%);transition:transform var(--ease);
  }
  .nav-links.is-open{transform:translateX(0)}
  .nav-link{padding:14px 12px;font-size:16px;border-radius:12px}
  .nav-link.active::after{left:12px;right:auto;width:24px;bottom:8px}
  .nav-links .btn{margin-top:12px;width:100%}
  .search-input{
    position:absolute;left:16px;right:16px;top:calc(100% + 10px);width:auto;opacity:0;pointer-events:none;
    background:#fff;box-shadow:var(--shadow-1);transform:translateY(-6px);
  }
  .search-wrap.is-open .search-input{width:auto;opacity:1;pointer-events:auto;transform:none}
  .hero-grid{grid-template-columns:minmax(0,1fr) 220px;gap:28px}
  .layout{grid-template-columns:minmax(0,1fr);gap:28px;padding-top:48px}
  .toc{position:static}
  .toc-list{flex-direction:row;flex-wrap:wrap;gap:8px}
  .toc-link{border-left:none;border:1px solid var(--line);padding:8px 14px;border-radius:999px}
  .toc-link.active{border-color:var(--brand);background:var(--brand-050)}
  .toc-foot{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .wrap{padding:0 16px}
  .cat-hero{padding:112px 0 44px}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:24px}
  .hero-media{aspect-ratio:16/9}
  .panel{padding:22px}
  .trouble-grid,.tip-grid,.split{grid-template-columns:minmax(0,1fr)}
  .cta-band{grid-template-columns:minmax(0,1fr);padding:28px;gap:18px}
  .cta-actions .btn{width:100%}
  .faq-body{margin:0 -22px;padding-left:22px;padding-right:22px}
  .site-footer{padding-top:48px;margin-top:64px}
  .footer-bar{flex-direction:column}
  .page-title{max-width:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important}
}

/* roulang page: category2 */
:root{
    --brand:#2D3BCB; --brand-600:#2331A8; --brand-050:#EEF0FE;
    --teal:#0FB6A8; --accent:#FF7A3D; --accent-600:#E9611F;
    --ink:#0E1524; --ink-2:#4C566B; --ink-3:#8A93A6;
    --line:#E3E7F2; --bg:#F5F7FB; --surface:#FFFFFF; --surface-2:#FAFBFE;
    --ok:#12B886; --warn:#F0A020; --err:#E5484D;
    --r-card:16px; --r-band:24px; --r-btn:12px; --r-img:12px;
    --shadow-1:0 1px 2px rgba(18,26,58,.05), 0 8px 24px -14px rgba(18,26,58,.16);
    --shadow-2:0 2px 4px rgba(18,26,58,.06), 0 18px 40px -20px rgba(18,26,58,.24);
    --wrap:1200px; --t:180ms ease-out;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{
    margin:0;padding:0;background:var(--bg);color:var(--ink-2);
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
    font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.25}
  p{margin:0}
  a{color:inherit;text-decoration:none;transition:color var(--t)}
  img{display:block;max-width:100%}
  button,input{font:inherit;color:inherit}
  button{cursor:pointer;border:0;background:none}
  ul,ol,dl,dd{margin:0;padding:0}
  li{list-style:none}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
  [id]{scroll-margin-top:96px}
  .num{font-variant-numeric:tabular-nums}

  .wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
  .wrap-narrow{max-width:880px}

  /* ---------- header / nav ---------- */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:80;height:72px;display:flex;align-items:center;
    background:rgba(255,255,255,.62);
    -webkit-backdrop-filter:blur(14px) saturate(140%);
    backdrop-filter:blur(14px) saturate(140%);
    border-bottom:1px solid rgba(45,59,203,.12);
    box-shadow:var(--shadow-1);
    transition:height var(--t),background var(--t),box-shadow var(--t),border-color var(--t);
  }
  .site-header.is-stuck{
    height:64px;background:rgba(255,255,255,.94);
    border-bottom-color:var(--line);
    box-shadow:0 8px 26px -16px rgba(18,26,58,.34);
  }
  .nav-inner{display:flex;align-items:center;gap:18px;width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
  .logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
  .logo-mark{
    position:relative;width:34px;height:34px;border-radius:10px;background:var(--brand);
    box-shadow:0 8px 18px -10px rgba(45,59,203,.85);flex:0 0 auto;
  }
  .logo-mark::before{content:"";position:absolute;left:10px;top:10px;width:14px;height:14px;border-radius:4px;background:rgba(255,255,255,.92)}
  .logo-mark::after{content:"";position:absolute;right:-3px;bottom:-3px;width:14px;height:14px;border-radius:5px;background:var(--accent);border:2px solid #fff}
  .logo-text{display:flex;flex-direction:column;font-size:16px;font-weight:800;color:var(--ink);line-height:1.15;letter-spacing:.01em}
  .logo-sub{font-size:11px;font-weight:500;color:var(--ink-3);letter-spacing:.02em}
  .nav-links{display:flex;align-items:center;gap:4px;margin:0 auto}
  .nav-link{position:relative;padding:8px 14px;border-radius:10px;font-size:15px;color:var(--ink-2)}
  .nav-link:hover{color:var(--brand);background:var(--brand-050)}
  .nav-link.active{color:var(--brand);font-weight:600}
  .nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--brand)}
  .nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
  .search-wrap{display:flex;align-items:center}
  .search-input{
    width:0;height:40px;padding:0;border:1px solid transparent;border-radius:var(--r-btn);
    background:#fff;font-size:14px;color:var(--ink);opacity:0;transition:width var(--t),opacity var(--t),padding var(--t),border-color var(--t);
  }
  .search-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-050)}
  .search-wrap.open .search-input{width:210px;padding:0 12px;opacity:1;border-color:var(--line);margin-right:6px}
  .icon-btn{
    width:40px;height:40px;border-radius:var(--r-btn);border:1px solid var(--line);background:#fff;
    color:var(--ink-2);display:inline-flex;align-items:center;justify-content:center;
    transition:color var(--t),background var(--t),border-color var(--t),transform var(--t);
  }
  .icon-btn:hover{color:var(--brand);border-color:var(--brand);background:var(--brand-050)}
  .icon-btn:active{transform:translateY(1px)}
  .search-wrap .icon-btn{border-color:transparent;background:transparent}
  .burger{display:none}

  /* ---------- drawer ---------- */
  .drawer-mask{position:fixed;inset:0;background:rgba(14,21,36,.42);z-index:110;opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t)}
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .nav-drawer{
    position:fixed;top:0;right:0;z-index:120;width:min(330px,86vw);height:100%;
    background:#fff;border-left:1px solid var(--line);padding:20px;
    display:flex;flex-direction:column;gap:18px;box-shadow:-24px 0 60px -32px rgba(18,26,58,.45);
    transform:translateX(106%);transition:transform 240ms ease-out;
  }
  .nav-drawer.is-open{transform:translateX(0)}
  .drawer-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
  .drawer-links{display:flex;flex-direction:column;gap:4px}
  .drawer-links .nav-link{padding:12px 14px;font-size:16px;border-radius:12px}
  .drawer-links .nav-link.active{background:var(--brand-050)}
  .drawer-links .nav-link.active::after{display:none}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:14px 26px;border-radius:var(--r-btn);font-size:15px;font-weight:600;
    border:1px solid transparent;transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
  }
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 12px 24px -14px rgba(255,122,61,.9)}
  .btn-primary:hover{background:var(--accent-600);transform:translateY(-1px);box-shadow:0 16px 30px -14px rgba(255,122,61,.95)}
  .btn-primary:active{transform:translateY(1px);box-shadow:none}
  .btn-secondary{background:#fff;border-color:var(--line);color:var(--ink)}
  .btn-secondary:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-050)}
  .btn-ghost{background:transparent;color:var(--brand);padding:14px 4px}
  .btn-ghost:hover{color:var(--brand-600);transform:translateX(2px)}
  .btn-sm{padding:9px 18px;font-size:14px}
  .btn-block{width:100%}
  .btn svg{flex:0 0 auto}

  /* ---------- hero ---------- */
  .cat-hero{
    padding:132px 0 76px;
    background:
      radial-gradient(880px 420px at 50% -8%, rgba(45,59,203,.10), transparent 72%),
      var(--bg);
  }
  .hero-copy{max-width:850px;margin:0 auto;text-align:center}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
    background:var(--brand-050);color:var(--brand);font-size:13px;font-weight:600;
  }
  .cat-hero h1{margin:18px 0 0;font-size:clamp(30px,4.2vw,52px);font-weight:800;letter-spacing:-.01em;line-height:1.18}
  .cat-hero .lead{margin:16px auto 0;max-width:640px;font-size:16px;color:var(--ink-2)}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:32px}
  .hero-facts{display:flex;flex-wrap:wrap;gap:44px;justify-content:center;margin-top:40px}
  .hero-facts li{display:flex;flex-direction:column;align-items:center;gap:2px}
  .hero-facts strong{font-size:clamp(24px,3vw,32px);font-weight:800;color:var(--brand);line-height:1.1;font-variant-numeric:tabular-nums}
  .hero-facts span{font-size:13px;color:var(--ink-3)}
  .hero-media{
    position:relative;margin-top:48px;border-radius:var(--r-band);overflow:hidden;
    aspect-ratio:21/9;background:#E9EDF7;box-shadow:var(--shadow-2);
  }
  .hero-media img{width:100%;height:100%;object-fit:cover}
  .hero-media::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:linear-gradient(180deg, rgba(45,59,203,.06) 0%, rgba(245,247,251,.30) 100%);
  }

  /* ---------- sections ---------- */
  .section{padding:96px 0}
  .section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .section-head{max-width:740px;margin-bottom:44px}
  .section-head.center{margin-left:auto;margin-right:auto;text-align:center}
  .section-head h2{font-size:clamp(24px,3vw,34px);font-weight:700}
  .section-head .desc{margin-top:12px;font-size:16px;color:var(--ink-2)}
  .band-dark{background:#101733;color:rgba(255,255,255,.76);padding:96px 0}
  .band-dark h2{color:#fff;font-size:clamp(24px,3vw,34px)}
  .band-dark .desc{color:rgba(255,255,255,.7);margin-top:12px;font-size:16px}

  /* ---------- pick cards ---------- */
  .card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .pick-card{
    display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--r-card);padding:30px;box-shadow:var(--shadow-1);
    transition:transform var(--t),box-shadow var(--t),border-color var(--t);
  }
  .pick-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(45,59,203,.24)}
  .pick-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
  .pick-card h3{font-size:20px;font-weight:600}
  .badge{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;font-size:12.5px;font-weight:600;background:var(--brand-050);color:var(--brand)}
  .badge-teal{background:rgba(15,182,168,.12);color:#0A8E83}
  .badge-warn{background:rgba(240,160,32,.14);color:#A76A00}
  .pick-desc{margin-top:12px;font-size:14.5px;color:var(--ink-2)}
  .pick-spec{margin-top:20px;display:grid;gap:10px;border-top:1px dashed var(--line);padding-top:18px}
  .pick-spec div{display:flex;align-items:baseline;justify-content:space-between;gap:14px;font-size:14px}
  .pick-spec dt{color:var(--ink-3);flex:0 0 auto}
  .pick-spec dd{color:var(--ink);font-weight:600;text-align:right}
  .card-link{margin-top:22px;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
  .card-link:hover{color:var(--brand-600);gap:10px}

  /* ---------- compare table ---------- */
  .table-scroll{border:1px solid var(--line);border-radius:var(--r-band);background:var(--surface);box-shadow:var(--shadow-1);overflow:hidden}
  table.cmp-table{width:100%;border-collapse:separate;border-spacing:0;font-size:15px}
  .cmp-table th,.cmp-table td{padding:18px 24px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
  .cmp-table thead th{
    position:sticky;top:64px;z-index:3;background:var(--surface-2);
    font-size:14px;font-weight:700;color:var(--ink);letter-spacing:.01em;
    box-shadow:inset 0 -1px 0 var(--line);
  }
  .cmp-table thead th:first-child{color:var(--ink-3);font-weight:600}
  .cmp-table tbody tr:nth-child(even){background:var(--surface-2)}
  .cmp-table tbody tr:last-child th,.cmp-table tbody tr:last-child td{border-bottom:0}
  .cmp-table tbody th{font-weight:600;color:var(--ink);width:20%;background:transparent}
  .cmp-table tbody td{color:var(--ink-2)}
  .cmp-note{margin-top:16px;font-size:13px;color:var(--ink-3)}
  .mark{
    display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;
    border-radius:999px;margin-right:8px;vertical-align:-3px;font-size:11px;font-weight:700;font-style:normal;
  }
  .mark.m-yes{background:var(--brand-050);color:var(--brand)}
  .mark.m-yes::before{content:"✓"}
  .mark.m-part{background:#F1F3F9;color:var(--ink-3)}
  .mark.m-part::before{content:"–"}
  .mark.m-no{background:#F7F8FC;color:#B4BBCB}
  .mark.m-no::before{content:"✕"}

  /* ---------- asymmetric features ---------- */
  .feature-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:24px}
  .feature-card{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
    padding:30px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;gap:14px;
    transition:transform var(--t),box-shadow var(--t);
  }
  .feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
  .feature-card.is-tall{grid-row:span 2}
  .feature-card h3{font-size:20px;font-weight:600}
  .feature-card p{font-size:15px;color:var(--ink-2)}
  .feature-media{border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/10;background:#E9EDF7}
  .feature-media img{width:100%;height:100%;object-fit:cover}
  .feature-list{display:grid;gap:10px;margin-top:4px}
  .feature-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ink-2)}
  .feature-list svg{flex:0 0 auto;margin-top:5px;color:var(--brand)}
  .mini-stats{display:flex;gap:28px;margin-top:auto;padding-top:18px;border-top:1px dashed var(--line)}
  .mini-stats strong{display:block;font-size:22px;font-weight:800;color:var(--brand);line-height:1.2;font-variant-numeric:tabular-nums}
  .mini-stats span{font-size:12.5px;color:var(--ink-3)}

  /* ---------- steps band ---------- */
  .step-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:44px}
  .step{
    background:#18224A;border:1px solid rgba(255,255,255,.09);border-radius:var(--r-card);
    padding:26px;transition:transform var(--t),border-color var(--t);
  }
  .step:hover{transform:translateY(-2px);border-color:rgba(166,176,255,.55)}
  .step-no{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:#A6B0FF;font-variant-numeric:tabular-nums;letter-spacing:.06em}
  .step h3{margin-top:12px;font-size:17px;font-weight:600;color:#fff}
  .step p{margin-top:8px;font-size:14px;color:rgba(255,255,255,.72)}
  .band-note{margin-top:28px;font-size:13.5px;color:rgba(255,255,255,.6)}

  /* ---------- faq ---------- */
  .faq-wrap{
    margin-top:44px;background:var(--surface);border:1px solid var(--line);
    border-radius:var(--r-band);box-shadow:var(--shadow-1);padding:8px 30px;overflow:hidden;
  }
  .faq-item{border-bottom:1px solid var(--line)}
  .faq-item:last-child{border-bottom:0}
  .faq-item summary{
    position:relative;list-style:none;cursor:pointer;padding:22px 46px 22px 0;
    font-size:16.5px;font-weight:600;color:var(--ink);transition:color var(--t);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary:hover{color:var(--brand)}
  .faq-item summary::before,.faq-item summary::after{
    content:"";position:absolute;right:8px;top:calc(50% - 1px);width:14px;height:2px;border-radius:2px;
    background:var(--ink-3);transition:transform var(--t),background var(--t);
  }
  .faq-item summary::after{transform:rotate(90deg)}
  .faq-item[open] summary{color:var(--ink);font-weight:700}
  .faq-item[open] summary::before{background:var(--brand);transform:rotate(45deg)}
  .faq-item[open] summary::after{background:var(--brand);transform:rotate(135deg)}
  .faq-item[open]{background:var(--surface-2);border-radius:0}
  .faq-item[open] summary{padding-left:2px}
  .faq-answer{padding:0 46px 24px 0;font-size:15.5px;color:var(--ink-2)}

  /* ---------- cta ---------- */
  .cta-band{
    background:var(--brand-050);border:1px solid rgba(45,59,203,.16);border-radius:var(--r-band);
    padding:56px 40px;text-align:center;
  }
  .cta-band h2{font-size:clamp(22px,2.6vw,30px);font-weight:700}
  .cta-band p{margin:14px auto 0;max-width:620px;font-size:15.5px;color:var(--ink-2)}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:30px}
  .cta-hint{margin-top:18px;font-size:12.5px;color:var(--ink-3)}

  /* ---------- footer ---------- */
  .site-footer{background:#0E1524;color:rgba(255,255,255,.68);padding:72px 0 0}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
  .site-footer .logo-text{color:#fff}
  .site-footer .logo-sub{color:rgba(255,255,255,.5)}
  .footer-desc{margin:16px 0 0;max-width:340px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.6)}
  .footer-title{margin:0 0 16px;font-size:15px;font-weight:700;color:#fff}
  .footer-links{display:grid;gap:10px;font-size:14.5px}
  .footer-links a{color:rgba(255,255,255,.66)}
  .footer-links a:hover{color:#fff}
  .social{display:flex;gap:10px}
  .social a{
    width:36px;height:36px;border-radius:10px;border:1px solid rgba(255,255,255,.16);
    display:inline-flex;align-items:center;justify-content:center;color:rgba(255,255,255,.75);
    transition:background var(--t),border-color var(--t),color var(--t);
  }
  .social a:hover{background:var(--brand);border-color:var(--brand);color:#fff}
  .footer-bar{
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
    border-top:1px solid rgba(255,255,255,.1);padding:22px 0;font-size:12.5px;color:rgba(255,255,255,.5);
  }

  /* ---------- responsive ---------- */
  @media (max-width:1024px){
    .nav-links{display:none}
    .burger{display:inline-flex}
    .feature-grid{grid-template-columns:1fr;grid-template-rows:auto}
    .feature-card.is-tall{grid-row:auto}
    .step-grid{grid-template-columns:repeat(2,1fr)}
    .card-grid{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  }
  @media (max-width:768px){
    .section{padding:72px 0}
    .cat-hero{padding:112px 0 56px}
    .band-dark{padding:72px 0}
    .hero-facts{gap:32px}
    .hero-media{aspect-ratio:16/10;margin-top:36px}
    .cmp-table thead th{top:56px}
    .cmp-table th,.cmp-table td{padding:16px 18px}
    .table-scroll{overflow-x:auto}
    table.cmp-table{min-width:760px}
    .faq-wrap{padding:4px 20px}
    .cta-band{padding:44px 22px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  }
  @media (max-width:640px){
    .wrap,.nav-inner{padding:0 18px}
    .search-wrap{display:none}
    .nav-right .btn-primary{display:none}
    .card-grid{grid-template-columns:1fr}
    .step-grid{grid-template-columns:1fr}
    .section{padding:56px 0}
    .band-dark{padding:56px 0}
    .pick-card,.feature-card{padding:22px}
    .faq-item summary{font-size:15.5px;padding:18px 40px 18px 0}
    .faq-answer{padding:0 40px 20px 0;font-size:14.5px}
    .footer-grid{grid-template-columns:1fr}
    .footer-bar{flex-direction:column}
  }
  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto}
    *{transition:none !important;animation:none !important}
  }

/* roulang page: category3 */
:root{
  --brand:#2D3BCB;
  --brand-600:#2331A8;
  --brand-050:#EEF0FE;
  --teal:#0FB6A8;
  --accent:#FF7A3D;
  --accent-600:#E9611F;
  --ink:#0E1524;
  --ink-2:#4C566B;
  --ink-3:#8A93A6;
  --line:#E3E7F2;
  --bg:#F5F7FB;
  --surface:#FFFFFF;
  --surface-2:#FAFBFE;
  --ok:#12B886;
  --warn:#F0A020;
  --err:#E5484D;
  --r-card:16px;
  --r-lg:24px;
  --r-btn:12px;
  --shadow-1:0 1px 2px rgba(18,26,58,.05), 0 8px 24px -14px rgba(18,26,58,.16);
  --shadow-2:0 2px 4px rgba(18,26,58,.06), 0 18px 40px -20px rgba(18,26,58,.24);
  --ease:180ms cubic-bezier(.22,.61,.36,1);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
section{scroll-margin-top:96px;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.wrap-narrow{width:100%;max-width:880px;margin:0 auto;padding:0 24px;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  height:var(--header-h);display:flex;align-items:center;
  background:rgba(255,255,255,.62);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(45,59,203,.12);
  box-shadow:0 10px 30px -24px rgba(18,26,58,.45);
  transition:background var(--ease),height var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-stuck{
  height:64px;
  background:rgba(255,255,255,.94);
  border-bottom-color:var(--line);
  box-shadow:0 12px 32px -22px rgba(18,26,58,.5);
}
.nav-inner{display:flex;align-items:center;gap:28px;width:100%;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo-mark{
  width:30px;height:30px;border-radius:9px;background:var(--brand);position:relative;flex:0 0 auto;
  box-shadow:0 8px 18px -10px rgba(45,59,203,.9);
}
.logo-mark::before{content:"";position:absolute;left:8px;right:8px;top:8px;height:5px;border-radius:3px;background:#fff;opacity:.95;}
.logo-mark::after{content:"";position:absolute;right:6px;bottom:6px;width:9px;height:9px;border-radius:3px;background:var(--accent);}
.logo-text{display:flex;flex-direction:column;line-height:1.15;font-weight:800;font-size:15.5px;color:var(--ink);}
.logo-sub{font-size:11.5px;font-weight:500;color:var(--ink-3);letter-spacing:.02em;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;}
.nav-link{
  position:relative;padding:8px 12px;border-radius:10px;font-size:15px;color:var(--ink-2);
  transition:color var(--ease),background var(--ease);
}
.nav-link:hover{color:var(--brand);background:var(--brand-050);}
.nav-link.active{color:var(--brand);font-weight:600;}
.nav-link.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;border-radius:2px;background:var(--brand);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:10px;}
.search-wrap{position:relative;display:flex;align-items:center;gap:6px;}
.search-input{
  height:40px;width:200px;padding:0 14px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.85);font-size:14px;transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
}
.search-input::placeholder{color:var(--ink-3);}
.search-input:focus{outline:none;background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(45,59,203,.15);}
.icon-btn{
  width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.85);color:var(--ink-2);
  cursor:pointer;transition:color var(--ease),border-color var(--ease),background var(--ease),transform var(--ease);
}
.icon-btn:hover{color:var(--brand);border-color:rgba(45,59,203,.35);background:#fff;}
.icon-btn:active{transform:translateY(1px);}
.burger{display:none;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--r-btn);font-size:15.5px;font-weight:600;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 10px 24px -14px rgba(255,122,61,.9);}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:none;}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line);}
.btn-outline:hover{color:var(--brand);border-color:rgba(45,59,203,.45);background:var(--brand-050);}
.btn-ghost{background:transparent;color:var(--brand);padding:12px 4px;}
.btn-ghost .arw{transition:transform var(--ease);}
.btn-ghost:hover .arw{transform:translateX(4px);}
.btn-sm{padding:10px 18px;font-size:14.5px;}
.btn-lg{padding:16px 34px;font-size:16.5px;}

/* ---------- shared blocks ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  background:var(--brand-050);color:var(--brand);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--teal);}
.page-title{font-size:clamp(30px,4.2vw,46px);line-height:1.18;font-weight:800;letter-spacing:-.01em;}
.sec-title{font-size:clamp(24px,3vw,32px);line-height:1.25;font-weight:700;}
.card-title{font-size:20px;line-height:1.4;font-weight:600;}
.lead{font-size:17px;line-height:1.85;color:var(--ink-2);}
.body-text{font-size:16px;line-height:1.85;color:var(--ink-2);}

.section{padding:96px 0;}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin:0 auto 44px;text-align:center;}
.section-head .sec-title{margin-bottom:14px;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;padding:140px 0 56px;background:var(--surface);border-bottom:1px solid var(--line);overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:var(--brand-050);opacity:.85;z-index:0;
}
.page-hero .wrap-narrow{position:relative;z-index:1;}
.page-hero .page-title{margin:20px 0 18px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-figure{
  margin-top:44px;border-radius:var(--r-card);overflow:hidden;background:#E9EDF7;
  border:1px solid var(--line);box-shadow:var(--shadow-1);aspect-ratio:16/9;
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}

/* ---------- stats strip ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;margin-top:-38px;
  position:relative;z-index:2;box-shadow:var(--shadow-1);
}
.stat{background:var(--surface);padding:22px 20px;}
.stat-num{font-size:24px;font-weight:800;color:var(--brand);line-height:1.2;}
.stat-label{font-size:13px;color:var(--ink-3);margin-top:6px;line-height:1.6;}

/* ---------- info cards ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.info-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-1);transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.info-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:rgba(45,59,203,.22);}
.info-card .ic{
  width:44px;height:44px;border-radius:12px;background:var(--brand-050);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:18px;
}
.info-card .card-title{margin-bottom:10px;}
.info-card ul{margin-top:14px;display:grid;gap:8px;}
.info-card li{position:relative;padding-left:18px;font-size:14.5px;color:var(--ink-2);line-height:1.7;}
.info-card li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--teal);}

.figure-block{margin-top:34px;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:#E9EDF7;box-shadow:var(--shadow-1);}
.figure-block img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.figure-cap{padding:14px 20px;font-size:13px;color:var(--ink-3);background:var(--surface);border-top:1px solid var(--line);}

/* ---------- steps ---------- */
.steps{margin:0 auto;max-width:760px;}
.step{position:relative;display:flex;gap:20px;padding-bottom:32px;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:13px;top:30px;bottom:0;width:2px;background:var(--line);
}
.step:last-child::before{display:none;}
.step-dot{
  position:relative;z-index:1;flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  background:#fff;border:2px solid var(--brand);display:flex;align-items:center;justify-content:center;
}
.step-dot span{width:8px;height:8px;border-radius:50%;background:var(--brand);}
.step-body{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:22px 26px;flex:1;box-shadow:var(--shadow-1);}
.step-body h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.step-body p{font-size:15px;color:var(--ink-2);}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);transition:background var(--ease);}
.faq-item[open]{background:var(--surface-2);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:18px;
  padding:24px 10px;transition:color var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-q{flex:1;font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;transition:color var(--ease);}
.faq-item summary:hover .faq-q{color:var(--brand);}
.faq-item[open] .faq-q{color:var(--ink);font-weight:700;}
.faq-icon{
  position:relative;flex:0 0 24px;width:24px;height:24px;margin-top:2px;border-radius:50%;
  border:1px solid var(--line);background:#fff;
  transition:transform var(--ease),background var(--ease),border-color var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  background:var(--brand);border-radius:2px;
}
.faq-icon::before{width:11px;height:2px;}
.faq-icon::after{width:2px;height:11px;}
.faq-item[open] .faq-icon{transform:rotate(45deg);background:var(--brand-050);border-color:rgba(45,59,203,.28);}
.faq-a{padding:0 52px 26px 10px;font-size:15.5px;line-height:1.85;color:var(--ink-2);}

/* ---------- more links ---------- */
.link-row{
  display:flex;align-items:center;gap:18px;padding:22px 26px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-1);
  transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease);
}
.link-row + .link-row{margin-top:14px;}
.link-row:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:rgba(45,59,203,.22);}
.link-row .tag{
  flex:0 0 auto;padding:5px 12px;border-radius:999px;background:var(--brand-050);color:var(--brand);
  font-size:12.5px;font-weight:600;
}
.link-row .txt{flex:1;font-size:15.5px;color:var(--ink-2);}
.link-row .txt strong{color:var(--ink);font-weight:600;display:block;margin-bottom:2px;}
.link-row .go{color:var(--brand);display:inline-flex;align-items:center;transition:transform var(--ease);}
.link-row:hover .go{transform:translateX(4px);}

/* ---------- cta band ---------- */
.cta-band-wrap{padding:0 0 96px;}
.cta-band{
  background:var(--brand-050);border:1px solid rgba(45,59,203,.14);border-radius:var(--r-lg);
  padding:52px 36px;text-align:center;box-shadow:var(--shadow-1);
}
.cta-band .sec-title{margin-bottom:12px;}
.cta-band p{max-width:560px;margin:0 auto;color:var(--ink-2);font-size:16px;}
.cta-band .btn{margin-top:28px;}
.cta-note{margin-top:16px;font-size:13px;color:var(--ink-3);}

/* ---------- footer ---------- */
.site-footer{background:var(--surface);border-top:1px solid var(--line);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-desc{font-size:14px;line-height:1.8;color:var(--ink-2);max-width:320px;}
.footer-title{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:16px;letter-spacing:.02em;}
.footer-links li + li{margin-top:10px;}
.footer-links a{font-size:14px;color:var(--ink-2);transition:color var(--ease);}
.footer-links a:hover{color:var(--brand);}
.social{display:flex;gap:10px;}
.social a{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);display:inline-flex;
  align-items:center;justify-content:center;color:var(--ink-2);
  transition:color var(--ease),border-color var(--ease),background var(--ease);
}
.social a:hover{color:var(--brand);border-color:rgba(45,59,203,.35);background:var(--brand-050);}
.footer-bar{
  border-top:1px solid var(--line);padding:20px 0 26px;display:flex;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:13px;color:var(--ink-3);
}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,21,36,.45);opacity:0;pointer-events:none;
  transition:opacity var(--ease);z-index:130;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);z-index:140;
  background:rgba(255,255,255,.94);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-left:1px solid var(--line);box-shadow:-20px 0 60px -30px rgba(18,26,58,.5);
  transform:translateX(100%);transition:transform 220ms cubic-bezier(.22,.61,.36,1);
  padding:22px;display:flex;flex-direction:column;gap:10px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-top:12px;}
.drawer-nav a{
  padding:14px 12px;border-radius:12px;font-size:15.5px;color:var(--ink-2);
  transition:background var(--ease),color var(--ease);
}
.drawer-nav a:hover{background:var(--brand-050);color:var(--brand);}
.drawer-nav a.active{background:var(--brand-050);color:var(--brand);font-weight:600;}
.drawer .btn{margin-top:8px;width:100%;}

@media (max-width:1024px){
  .nav-links{display:none;}
  .burger{display:inline-flex;}
  .search-input{width:160px;}
  .section{padding:72px 0;}
  .stats{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .search-wrap{display:none;}
  .page-hero{padding:112px 0 44px;}
  .grid-2{grid-template-columns:1fr;}
  .info-card{padding:22px;}
  .step-body{padding:20px;}
  .faq-a{padding-right:10px;}
  .cta-band{padding:40px 22px;}
  .footer-bar{flex-direction:column;}
}
@media (max-width:520px){
  .wrap,.wrap-narrow{padding:0 18px;}
  .section{padding:56px 0;}
  .stats{grid-template-columns:1fr;}
  .stat{padding:18px;}
  .hero-actions .btn{width:100%;}
  .link-row{flex-wrap:wrap;gap:10px;padding:18px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .logo-sub{display:none;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important;animation:none !important;}
}