/* roulang page: index */
:root{
      --brand:#5b5cf6;
      --brand-dark:#3434c6;
      --brand-soft:#eef0ff;
      --accent:#ff7a45;
      --accent-soft:#fff1e9;
      --ink:#15172a;
      --muted:#667085;
      --weak:#98a2b3;
      --line:#e7eaf2;
      --bg:#f7f8fc;
      --panel:#ffffff;
      --panel-2:#fbfcff;
      --success:#16a36a;
      --warning:#f59e0b;
      --danger:#ef4444;
      --radius-sm:12px;
      --radius:20px;
      --radius-lg:30px;
      --shadow-sm:0 8px 24px rgba(21,23,42,.06);
      --shadow:0 18px 55px rgba(35,38,90,.12);
      --shadow-hover:0 24px 70px rgba(35,38,90,.18);
      --container:1180px;
      --nav-h:76px;
      --ease:all .25s ease;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--ink);
      background:
        radial-gradient(circle at 7% 5%, rgba(91,92,246,.12), transparent 30%),
        radial-gradient(circle at 92% 15%, rgba(255,122,69,.12), transparent 28%),
        var(--bg);
      line-height:1.75;
      letter-spacing:.01em;
      padding-bottom:78px;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover{color:var(--brand)}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(91,92,246,.2);color:var(--ink)}
    :focus-visible{
      outline:3px solid rgba(91,92,246,.32);
      outline-offset:3px;
      border-radius:10px;
    }

    .container-xl{max-width:var(--container)}
    .site-header{
      position:sticky;
      top:0;
      z-index:1000;
      background:rgba(255,255,255,.9);
      backdrop-filter:saturate(160%) blur(16px);
      border-bottom:1px solid rgba(231,234,242,.92);
      box-shadow:0 8px 30px rgba(21,23,42,.04);
    }
    .navbar{min-height:var(--nav-h);padding:.75rem 0}
    .brand-logo{
      display:flex;
      align-items:center;
      gap:12px;
      font-weight:900;
      color:var(--ink);
      letter-spacing:-.02em;
      white-space:nowrap;
    }
    .brand-mark{
      width:42px;height:42px;
      border-radius:15px;
      display:grid;place-items:center;
      color:#fff;
      background:linear-gradient(135deg,var(--brand),#8b5cf6 55%,var(--accent));
      box-shadow:0 12px 26px rgba(91,92,246,.25);
      flex:0 0 auto;
    }
    .brand-text{font-size:1.02rem}
    .navbar-toggler{
      border:0;
      padding:.55rem .65rem;
      background:var(--brand-soft);
      border-radius:14px;
      color:var(--brand-dark);
    }
    .nav-channel{
      display:flex;
      align-items:center;
      gap:8px;
      margin-left:28px;
    }
    .nav-channel .nav-link{
      padding:.62rem .95rem;
      border-radius:999px;
      color:#4b5565;
      font-weight:700;
      font-size:.94rem;
    }
    .nav-channel .nav-link:hover{
      background:var(--brand-soft);
      color:var(--brand-dark);
    }
    .nav-channel .nav-link.active{
      background:var(--brand);
      color:#fff;
      box-shadow:0 10px 22px rgba(91,92,246,.24);
    }
    .nav-tools{
      display:flex;
      align-items:center;
      gap:12px;
      margin-left:auto;
    }
    .nav-search{
      position:relative;
      width:260px;
      flex:0 0 auto;
    }
    .nav-search i{
      position:absolute;
      left:14px;top:50%;
      transform:translateY(-50%);
      color:var(--weak);
      font-size:.92rem;
    }
    .nav-search input{
      width:100%;
      height:42px;
      border:1px solid var(--line);
      border-radius:999px;
      padding:0 16px 0 40px;
      background:#fff;
      color:var(--ink);
      transition:var(--ease);
    }
    .nav-search input:focus{
      border-color:rgba(91,92,246,.55);
      box-shadow:0 0 0 4px rgba(91,92,246,.11);
      outline:0;
    }

    .btn-brand,.btn-ghost,.btn-soft,.btn-darkline{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      border-radius:999px;
      font-weight:800;
      border:1px solid transparent;
      padding:.82rem 1.18rem;
      min-height:46px;
      transition:var(--ease);
      cursor:pointer;
      white-space:nowrap;
    }
    .btn-brand{
      background:linear-gradient(135deg,var(--brand),#7669ff);
      color:#fff;
      box-shadow:0 14px 32px rgba(91,92,246,.28);
    }
    .btn-brand:hover{
      color:#fff;
      transform:translateY(-2px);
      box-shadow:0 20px 42px rgba(91,92,246,.34);
    }
    .btn-ghost{
      background:#fff;
      color:var(--ink);
      border-color:var(--line);
      box-shadow:var(--shadow-sm);
    }
    .btn-ghost:hover{
      transform:translateY(-2px);
      border-color:rgba(91,92,246,.35);
      box-shadow:var(--shadow);
    }
    .btn-soft{
      background:var(--accent-soft);
      color:#b84b18;
      border-color:rgba(255,122,69,.2);
    }
    .btn-soft:hover{
      background:#ffe4d4;
      color:#98390d;
      transform:translateY(-2px);
    }
    .btn-darkline{
      background:#16182f;
      color:#fff;
      border-color:rgba(255,255,255,.12);
    }
    .btn-darkline:hover{color:#fff;background:#23264a;transform:translateY(-2px)}

    main{overflow:hidden}
    .section{
      padding:84px 0;
      position:relative;
    }
    .section-tight{padding:66px 0}
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:30px;
      margin-bottom:30px;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--brand-dark);
      background:var(--brand-soft);
      border:1px solid rgba(91,92,246,.14);
      border-radius:999px;
      padding:.4rem .75rem;
      font-weight:800;
      font-size:.86rem;
      margin-bottom:12px;
    }
    .section-title{
      font-weight:950;
      letter-spacing:-.035em;
      line-height:1.18;
      margin:0;
      font-size:clamp(1.8rem,3vw,2.75rem);
    }
    .section-desc{
      color:var(--muted);
      max-width:620px;
      margin:12px 0 0;
      font-size:1.02rem;
    }

    .hero{
      padding:38px 0 72px;
    }
    .hero-bento{
      display:grid;
      grid-template-columns:1.35fr .78fr;
      grid-template-rows:auto auto;
      gap:18px;
      align-items:stretch;
    }
    .hero-main{
      position:relative;
      min-height:470px;
      overflow:hidden;
      border-radius:var(--radius-lg);
      padding:44px;
      background:
        linear-gradient(135deg,rgba(21,23,42,.95),rgba(46,51,108,.94)),
        radial-gradient(circle at 78% 22%, rgba(255,122,69,.35), transparent 34%);
      color:#fff;
      box-shadow:var(--shadow);
    }
    .hero-main:before{
      content:"";
      position:absolute;
      inset:auto -80px -110px auto;
      width:360px;height:360px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(91,92,246,.55),rgba(91,92,246,0) 68%);
    }
    .hero-main:after{
      content:"MP4";
      position:absolute;
      right:34px;
      bottom:10px;
      font-size:7.4rem;
      line-height:1;
      font-weight:950;
      color:rgba(255,255,255,.055);
      letter-spacing:-.08em;
    }
    .hero-content{position:relative;z-index:2;max-width:760px}
    .hero-badge-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:22px;
    }
    .pill{
      display:inline-flex;
      align-items:center;
      gap:7px;
      border-radius:999px;
      padding:.42rem .74rem;
      font-size:.86rem;
      font-weight:800;
      color:#303350;
      background:#fff;
      border:1px solid rgba(231,234,242,.9);
      box-shadow:0 8px 20px rgba(21,23,42,.06);
    }
    .hero-main .pill{
      color:#fff;
      background:rgba(255,255,255,.12);
      border-color:rgba(255,255,255,.18);
      backdrop-filter:blur(8px);
    }
    h1{
      font-size:clamp(2.15rem,5.4vw,5rem);
      line-height:1.05;
      letter-spacing:-.055em;
      font-weight:950;
      margin:0 0 20px;
      max-width:850px;
    }
    .hero-lead{
      font-size:clamp(1rem,1.45vw,1.18rem);
      color:rgba(255,255,255,.78);
      max-width:720px;
      margin:0 0 26px;
      line-height:1.9;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:13px;
      margin-bottom:30px;
    }
    .hero-data{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:12px;
      max-width:720px;
    }
    .hero-data .data-chip{
      border:1px solid rgba(255,255,255,.14);
      background:rgba(255,255,255,.09);
      border-radius:18px;
      padding:14px 16px;
      backdrop-filter:blur(10px);
    }
    .data-chip strong{
      display:block;
      font-size:1.25rem;
      color:#fff;
      letter-spacing:-.02em;
    }
    .data-chip span{font-size:.86rem;color:rgba(255,255,255,.66)}
    .hero-side{
      display:grid;
      grid-template-rows:1fr 1fr;
      gap:18px;
    }
    .mini-card,.cta-strip{
      border-radius:var(--radius-lg);
      background:#fff;
      border:1px solid rgba(231,234,242,.9);
      box-shadow:var(--shadow-sm);
      padding:26px;
      position:relative;
      overflow:hidden;
      transition:var(--ease);
    }
    .mini-card:hover,.case-card:hover,.metric-card:hover,.feature-card:hover,.plan-card:hover,.entry-card:hover{
      transform:translateY(-5px);
      box-shadow:var(--shadow-hover);
    }
    .mini-card:after{
      content:"";
      position:absolute;
      width:150px;height:150px;
      right:-55px;top:-50px;
      border-radius:50%;
      background:var(--brand-soft);
    }
    .mini-icon{
      width:48px;height:48px;
      display:grid;place-items:center;
      border-radius:17px;
      color:#fff;
      background:linear-gradient(135deg,var(--brand),#8b5cf6);
      margin-bottom:18px;
      position:relative;
      z-index:1;
    }
    .mini-card:nth-child(2) .mini-icon{
      background:linear-gradient(135deg,var(--accent),#ffb86b);
    }
    .mini-card h2,.mini-card h3{
      position:relative;
      z-index:1;
      font-size:1.18rem;
      font-weight:900;
      margin:0 0 8px;
      letter-spacing:-.02em;
    }
    .mini-card p{
      position:relative;
      z-index:1;
      color:var(--muted);
      margin:0;
      font-size:.96rem;
    }
    .cta-strip{
      grid-column:1 / -1;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      background:linear-gradient(135deg,#fff,#f5f6ff);
      padding:22px 26px;
    }
    .cta-strip strong{font-size:1.08rem}
    .cta-strip p{margin:3px 0 0;color:var(--muted);font-size:.94rem}

    .case-layout{
      display:grid;
      grid-template-columns:1fr 1.15fr;
      gap:24px;
      align-items:start;
    }
    .case-spotlight{
      border-radius:var(--radius-lg);
      background:linear-gradient(135deg,#fff7f1,#ffffff);
      border:1px solid rgba(255,122,69,.18);
      padding:30px;
      box-shadow:var(--shadow-sm);
      min-height:100%;
    }
    .quote-mark{
      width:54px;height:54px;
      display:grid;place-items:center;
      border-radius:19px;
      background:var(--accent);
      color:#fff;
      margin-bottom:18px;
      font-size:1.3rem;
    }
    .case-spotlight h2{
      font-size:1.6rem;
      font-weight:950;
      line-height:1.25;
      margin:0 0 14px;
      letter-spacing:-.03em;
    }
    .case-spotlight p{color:var(--muted);margin:0 0 18px}
    .case-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}
    .tag{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:.34rem .68rem;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--line);
      color:#4b5565;
      font-weight:750;
      font-size:.84rem;
    }
    .case-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:16px;
    }
    .case-card{
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius);
      padding:22px;
      box-shadow:var(--shadow-sm);
      transition:var(--ease);
    }
    .case-card .avatar{
      width:42px;height:42px;
      display:grid;place-items:center;
      border-radius:15px;
      background:var(--brand-soft);
      color:var(--brand-dark);
      margin-bottom:15px;
    }
    .case-card h3{
      font-size:1.06rem;
      font-weight:900;
      margin:0 0 8px;
    }
    .case-card p{
      color:var(--muted);
      font-size:.94rem;
      margin:0;
    }

    .metrics-wrap{
      border-radius:34px;
      padding:34px;
      background:#15172a;
      color:#fff;
      box-shadow:var(--shadow);
      position:relative;
      overflow:hidden;
    }
    .metrics-wrap:before{
      content:"";
      position:absolute;
      inset:-120px -80px auto auto;
      width:350px;height:350px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(91,92,246,.55),transparent 66%);
    }
    .metrics-head{
      position:relative;
      z-index:1;
      display:flex;
      justify-content:space-between;
      gap:24px;
      margin-bottom:26px;
    }
    .metrics-head p{color:rgba(255,255,255,.68);max-width:620px;margin:0}
    .metric-grid{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:14px;
    }
    .metric-card{
      padding:22px;
      border-radius:22px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.07);
      transition:var(--ease);
    }
    .metric-card strong{
      display:block;
      font-size:2rem;
      line-height:1.1;
      letter-spacing:-.04em;
      margin-bottom:7px;
    }
    .metric-card span{color:rgba(255,255,255,.66);font-size:.92rem}

    .entry-matrix{
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:14px;
      margin-top:24px;
    }
    .entry-card{
      background:#fff;
      border:1px solid var(--line);
      border-radius:22px;
      padding:18px;
      box-shadow:var(--shadow-sm);
      transition:var(--ease);
      min-height:130px;
    }
    .entry-card i{
      color:var(--brand);
      font-size:1.2rem;
      margin-bottom:13px;
    }
    .entry-card strong{display:block;font-weight:900;margin-bottom:6px}
    .entry-card span{display:block;color:var(--muted);font-size:.9rem}

    .compare-board{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:18px;
      align-items:stretch;
    }
    .compare-card{
      border-radius:var(--radius-lg);
      padding:30px;
      border:1px solid var(--line);
      background:#fff;
      box-shadow:var(--shadow-sm);
    }
    .compare-card.before{background:linear-gradient(180deg,#fff,#fff7f7)}
    .compare-card.after{background:linear-gradient(180deg,#fff,#f5fff9);border-color:rgba(22,163,106,.18)}
    .compare-card h2{
      font-size:1.35rem;
      font-weight:950;
      margin:0 0 18px;
      display:flex;
      align-items:center;
      gap:10px;
    }
    .compare-list{
      list-style:none;
      margin:0;
      padding:0;
      display:grid;
      gap:12px;
    }
    .compare-list li{
      display:flex;
      gap:12px;
      padding:13px 14px;
      border-radius:16px;
      background:rgba(255,255,255,.72);
      border:1px solid rgba(231,234,242,.72);
      color:#4b5565;
    }
    .compare-list i{margin-top:5px}
    .before .compare-list i{color:var(--danger)}
    .after .compare-list i{color:var(--success)}

    .feature-row{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:16px;
      margin-top:24px;
    }
    .feature-card{
      border-radius:24px;
      padding:24px;
      border:1px solid var(--line);
      background:#fff;
      box-shadow:var(--shadow-sm);
      transition:var(--ease);
    }
    .feature-card .feature-icon{
      width:50px;height:50px;
      border-radius:18px;
      display:grid;place-items:center;
      background:var(--brand-soft);
      color:var(--brand-dark);
      margin-bottom:16px;
    }
    .feature-card:nth-child(2) .feature-icon{background:var(--accent-soft);color:#b84b18}
    .feature-card:nth-child(3) .feature-icon{background:#eafaf2;color:var(--success)}
    .feature-card h3{font-size:1.12rem;font-weight:950;margin:0 0 8px}
    .feature-card p{color:var(--muted);margin:0;font-size:.95rem}

    .news-shell{
      display:grid;
      grid-template-columns:1.35fr .72fr;
      gap:22px;
      align-items:start;
    }
    .news-list,.recommend-panel,.plan-panel,.faq-panel,.contact-panel{
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-sm);
    }
    .news-list{padding:10px}
    .news-item{
      display:grid;
      grid-template-columns:auto 1fr auto;
      gap:16px;
      align-items:center;
      padding:18px;
      border-radius:22px;
      transition:var(--ease);
      border:1px solid transparent;
    }
    .news-item + .news-item{border-top:1px solid rgba(231,234,242,.72)}
    .news-item:hover{
      background:var(--panel-2);
      border-color:rgba(91,92,246,.14);
      transform:translateX(3px);
    }
    .news-num{
      width:38px;height:38px;
      display:grid;place-items:center;
      border-radius:14px;
      background:var(--brand-soft);
      color:var(--brand-dark);
      font-weight:900;
    }
    .news-item h3{
      font-size:1.02rem;
      font-weight:900;
      margin:0 0 4px;
      line-height:1.4;
    }
    .news-item p{
      margin:0;
      color:var(--muted);
      font-size:.92rem;
    }
    .news-arrow{
      width:34px;height:34px;
      display:grid;place-items:center;
      border-radius:50%;
      background:#fff;
      border:1px solid var(--line);
      color:var(--weak);
    }
    .news-item:hover .news-arrow{background:var(--brand);color:#fff;border-color:var(--brand)}
    .recommend-panel{padding:24px;position:sticky;top:96px}
    .recommend-panel h3,.plan-panel h3{
      font-size:1.18rem;
      font-weight:950;
      margin:0 0 14px;
    }
    .hot-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:12px;
    }
    .hot-list li{
      display:flex;
      align-items:flex-start;
      gap:10px;
      color:#4b5565;
      padding:12px;
      border-radius:16px;
      background:var(--panel-2);
      border:1px solid rgba(231,234,242,.8);
    }
    .hot-list i{color:var(--accent);margin-top:5px}

    .plan-panel{padding:28px;margin-top:22px}
    .plan-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:16px;
      margin-top:18px;
    }
    .plan-card{
      position:relative;
      border:1px solid var(--line);
      border-radius:24px;
      padding:24px;
      background:#fff;
      box-shadow:var(--shadow-sm);
      transition:var(--ease);
    }
    .plan-card.featured{
      border-color:rgba(91,92,246,.34);
      background:linear-gradient(180deg,#fff,#f7f7ff);
      transform:translateY(-4px);
    }
    .plan-badge{
      position:absolute;
      top:18px;right:18px;
      background:var(--brand);
      color:#fff;
      border-radius:999px;
      padding:.25rem .6rem;
      font-size:.78rem;
      font-weight:900;
    }
    .plan-card h4{font-size:1.15rem;font-weight:950;margin:0 0 8px}
    .plan-card p{color:var(--muted);font-size:.93rem;margin:0 0 16px}
    .plan-card ul{list-style:none;padding:0;margin:0 0 18px;display:grid;gap:9px}
    .plan-card li{display:flex;gap:9px;color:#4b5565;font-size:.92rem}
    .plan-card li i{color:var(--success);margin-top:5px}

    .consult-wrap{
      border-radius:36px;
      background:
        linear-gradient(135deg,rgba(91,92,246,.94),rgba(37,40,88,.98)),
        radial-gradient(circle at 85% 20%,rgba(255,122,69,.5),transparent 35%);
      color:#fff;
      padding:34px;
      box-shadow:var(--shadow);
      overflow:hidden;
      position:relative;
    }
    .consult-wrap:after{
      content:"";
      position:absolute;
      right:-70px;bottom:-90px;
      width:330px;height:330px;
      border-radius:50%;
      background:rgba(255,255,255,.08);
    }
    .consult-grid{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1fr .9fr;
      gap:28px;
      align-items:start;
    }
    .consult-copy h2{
      font-size:clamp(1.8rem,3vw,3rem);
      line-height:1.15;
      font-weight:950;
      letter-spacing:-.04em;
      margin:0 0 14px;
    }
    .consult-copy p{color:rgba(255,255,255,.76);margin:0 0 22px;max-width:650px}
    .consult-points{
      display:grid;
      gap:12px;
      margin-top:22px;
    }
    .consult-points div{
      display:flex;
      align-items:center;
      gap:11px;
      color:rgba(255,255,255,.86);
    }
    .consult-points i{
      width:28px;height:28px;
      display:grid;place-items:center;
      border-radius:50%;
      background:rgba(255,255,255,.14);
    }
    .contact-panel{
      padding:24px;
      background:rgba(255,255,255,.96);
      color:var(--ink);
      position:relative;
      z-index:1;
    }
    .form-label{font-weight:850;color:#303350;margin-bottom:7px}
    .form-control,.form-select{
      border:1px solid var(--line);
      border-radius:16px;
      padding:.8rem .95rem;
      min-height:48px;
      color:var(--ink);
      background:#fff;
    }
    .form-control:focus,.form-select:focus{
      border-color:rgba(91,92,246,.5);
      box-shadow:0 0 0 4px rgba(91,92,246,.1);
    }
    .form-tip{
      color:var(--muted);
      font-size:.86rem;
      margin-top:12px;
    }
    .form-message{
      display:none;
      margin-top:12px;
      padding:12px 14px;
      border-radius:16px;
      background:#eafaf2;
      color:#087448;
      font-weight:800;
      border:1px solid rgba(22,163,106,.18);
    }

    .faq-panel{
      margin-top:24px;
      padding:10px;
      background:#fff;
      color:var(--ink);
    }
    .faq-title-row{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      padding:18px 18px 6px;
    }
    .faq-title-row h2{font-size:1.35rem;font-weight:950;margin:0}
    .accordion-item{
      border:0;
      border-radius:20px!important;
      overflow:hidden;
      background:var(--panel-2);
      margin:10px;
    }
    .accordion-button{
      border-radius:20px!important;
      background:var(--panel-2);
      font-weight:900;
      color:var(--ink);
      box-shadow:none!important;
      padding:18px 20px;
    }
    .accordion-button:not(.collapsed){
      color:var(--brand-dark);
      background:var(--brand-soft);
    }
    .accordion-button::after{
      width:1rem;height:1rem;
      background-size:1rem;
    }
    .accordion-body{
      color:var(--muted);
      padding:0 20px 20px;
      line-height:1.85;
    }

    .site-footer{
      background:#101225;
      color:#fff;
      padding:48px 0 30px;
      margin-top:0;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:28px;
      align-items:start;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      font-size:1.08rem;
      font-weight:950;
      margin-bottom:14px;
    }
    .footer-brand .brand-mark{box-shadow:none}
    .footer-desc{
      color:rgba(255,255,255,.65);
      max-width:520px;
      margin:0;
    }
    .footer-col h3{
      font-size:1rem;
      font-weight:950;
      margin:0 0 14px;
    }
    .footer-links{
      list-style:none;
      margin:0;
      padding:0;
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:rgba(255,255,255,.65);
    }
    .footer-links a:hover{color:#fff}
    .footer-bottom{
      border-top:1px solid rgba(255,255,255,.1);
      margin-top:34px;
      padding-top:20px;
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      color:rgba(255,255,255,.55);
      font-size:.9rem;
    }

    .sticky-cta{
      position:fixed;
      left:50%;
      bottom:16px;
      transform:translateX(-50%);
      width:min(930px,calc(100% - 28px));
      z-index:1200;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding:12px 14px 12px 18px;
      border-radius:999px;
      background:rgba(21,23,42,.94);
      color:#fff;
      box-shadow:0 18px 50px rgba(21,23,42,.3);
      backdrop-filter:blur(14px);
      border:1px solid rgba(255,255,255,.12);
    }
    .sticky-cta span{
      color:rgba(255,255,255,.74);
      font-size:.94rem;
    }
    .sticky-cta strong{font-weight:950}
    .sticky-actions{display:flex;gap:10px;align-items:center}
    .sticky-cta .btn-brand,.sticky-cta .btn-ghost{
      min-height:42px;
      padding:.64rem 1rem;
    }
    .sticky-cta .btn-ghost{
      background:rgba(255,255,255,.1);
      color:#fff;
      border-color:rgba(255,255,255,.18);
      box-shadow:none;
    }

    @media (max-width:1024px){
      .nav-search{width:210px}
      .hero-bento{grid-template-columns:1fr}
      .hero-side{grid-template-columns:1fr 1fr;grid-template-rows:auto}
      .metric-grid,.entry-matrix{grid-template-columns:repeat(2,minmax(0,1fr))}
      .news-shell,.consult-grid,.case-layout{grid-template-columns:1fr}
      .recommend-panel{position:relative;top:auto}
    }

    @media (max-width:768px){
      body{padding-bottom:92px}
      .section{padding:62px 0}
      .section-head{display:block}
      .navbar-collapse{
        padding:14px 0 4px;
        border-top:1px solid var(--line);
        margin-top:12px;
      }
      .nav-channel{
        margin-left:0;
        padding:8px 0;
        overflow-x:auto;
      }
      .nav-tools{
        margin-left:0;
        flex-direction:column;
        align-items:stretch;
      }
      .nav-search{width:100%}
      .nav-tools .btn-brand{width:100%}
      .hero-main{padding:30px;min-height:auto}
      .hero-data{grid-template-columns:1fr}
      .hero-side{grid-template-columns:1fr}
      .cta-strip{display:block}
      .cta-strip .btn-soft{margin-top:14px;width:100%}
      .case-grid,.compare-board,.feature-row,.plan-grid{grid-template-columns:1fr}
      .metrics-head{display:block}
      .footer-grid{grid-template-columns:1fr}
      .sticky-cta{
        border-radius:24px;
        align-items:flex-start;
        flex-direction:column;
      }
      .sticky-actions{width:100%}
      .sticky-actions a{flex:1}
    }

    @media (max-width:520px){
      .brand-text{font-size:.94rem;max-width:210px;white-space:normal;line-height:1.25}
      .hero{padding-top:24px}
      .hero-main{border-radius:24px;padding:24px}
      h1{font-size:2.05rem}
      .hero-actions .btn-brand,.hero-actions .btn-ghost{width:100%}
      .mini-card,.compare-card,.consult-wrap{border-radius:24px;padding:22px}
      .metric-grid,.entry-matrix{grid-template-columns:1fr}
      .news-item{
        grid-template-columns:auto 1fr;
      }
      .news-arrow{display:none}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:8px}
      .sticky-cta span{font-size:.86rem}
      .sticky-actions{flex-direction:column}
      .sticky-actions a{width:100%}
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}