/* roulang page: index */
:root{
      --primary:#2563eb;
      --primary-dark:#1d4ed8;
      --primary-soft:#eaf2ff;
      --secondary:#0f766e;
      --accent:#f59e0b;
      --ink:#102033;
      --muted:#64748b;
      --light:#f7faff;
      --surface:#ffffff;
      --surface-2:#eef5ff;
      --border:#dbe7f6;
      --border-strong:#bfdbfe;
      --shadow-sm:0 8px 20px rgba(15, 36, 66, .07);
      --shadow-md:0 18px 45px rgba(15, 36, 66, .12);
      --shadow-lg:0 28px 70px rgba(15, 36, 66, .16);
      --radius-sm:12px;
      --radius:20px;
      --radius-lg:30px;
      --nav-height:76px;
      --focus:0 0 0 .25rem rgba(37,99,235,.18);
    }

    *{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 12% 8%, rgba(37,99,235,.10), transparent 28%),
        linear-gradient(180deg,#f8fbff 0%,#ffffff 38%,#f6f9ff 100%);
      line-height:1.72;
      overflow-x:hidden;
    }
    a{
      color:inherit;
      text-decoration:none;
      transition:color .2s ease,background .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
    }
    img{max-width:100%;height:auto;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(37,99,235,.18);color:var(--ink)}

    .container{
      width:min(1180px, calc(100% - 32px));
      max-width:1180px;
    }
    .section{
      padding:86px 0;
      position:relative;
    }
    .section-tight{padding:64px 0}
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:34px;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      background:var(--primary-soft);
      color:var(--primary-dark);
      font-weight:700;
      font-size:.88rem;
      margin-bottom:12px;
    }
    .section-title{
      font-size:clamp(1.8rem, 3vw, 2.65rem);
      line-height:1.18;
      letter-spacing:-.03em;
      margin:0;
      font-weight:850;
    }
    .section-desc{
      color:var(--muted);
      max-width:680px;
      margin:12px 0 0;
      font-size:1.02rem;
    }
    .soft-bg{
      background:linear-gradient(180deg,rgba(238,245,255,.88),rgba(255,255,255,.9));
      border-top:1px solid rgba(219,231,246,.85);
      border-bottom:1px solid rgba(219,231,246,.85);
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:1000;
      background:rgba(255,255,255,.86);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(219,231,246,.88);
    }
    .navbar{
      min-height:var(--nav-height);
      padding:0;
    }
    .brand-mark{
      display:flex;
      align-items:center;
      gap:12px;
      font-weight:900;
      letter-spacing:-.02em;
      color:var(--ink);
    }
    .brand-icon{
      width:42px;
      height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      color:#fff;
      background:
        linear-gradient(135deg,var(--primary),#60a5fa 55%,#93c5fd);
      box-shadow:0 12px 24px rgba(37,99,235,.25);
      position:relative;
      overflow:hidden;
    }
    .brand-icon:after{
      content:"";
      position:absolute;
      width:20px;
      height:58px;
      background:rgba(255,255,255,.35);
      transform:rotate(32deg);
      left:-18px;
      top:-8px;
      animation:shine 4s ease-in-out infinite;
    }
    @keyframes shine{
      0%,45%{left:-26px}
      65%,100%{left:48px}
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.12;
      font-size:1.03rem;
    }
    .brand-sub{
      color:var(--muted);
      font-size:.72rem;
      font-weight:700;
      letter-spacing:.08em;
      margin-top:2px;
    }
    .navbar-toggler{
      border:1px solid var(--border);
      border-radius:12px;
      padding:.55rem .7rem;
      box-shadow:none!important;
      background:#fff;
    }
    .navbar-toggler:focus{box-shadow:var(--focus)!important}
    .nav-wrap{
      gap:22px;
    }
    .main-nav{
      align-items:center;
      gap:8px;
    }
    .main-nav .nav-link{
      color:#334155;
      font-weight:750;
      padding:.72rem 1rem!important;
      border-radius:999px;
      position:relative;
    }
    .main-nav .nav-link:hover,
    .main-nav .nav-link:focus{
      background:var(--primary-soft);
      color:var(--primary-dark);
    }
    .main-nav .nav-link.active{
      color:#fff!important;
      background:linear-gradient(135deg,var(--primary),#3b82f6);
      box-shadow:0 10px 22px rgba(37,99,235,.22);
    }
    .nav-actions{
      display:flex;
      align-items:center;
      gap:12px;
      margin-left:auto;
    }
    .nav-search{
      width:230px;
      height:44px;
      border:1px solid var(--border);
      background:#fff;
      border-radius:999px;
      display:flex;
      align-items:center;
      gap:8px;
      padding:0 14px;
      color:var(--muted);
      box-shadow:var(--shadow-sm);
    }
    .nav-search input{
      width:100%;
      border:0;
      outline:0;
      color:var(--ink);
      background:transparent;
      font-size:.94rem;
    }
    .nav-search:focus-within{
      border-color:var(--primary);
      box-shadow:var(--focus);
    }
    .mega-holder{
      position:relative;
    }
    .mega-trigger{
      border:0;
      height:44px;
      border-radius:999px;
      color:var(--primary-dark);
      background:var(--primary-soft);
      font-weight:800;
      padding:0 16px;
      display:inline-flex;
      align-items:center;
      gap:8px;
    }
    .mega-trigger:hover,.mega-trigger:focus{
      background:#dbeafe;
      transform:translateY(-1px);
      box-shadow:var(--shadow-sm);
    }
    .mega-panel{
      position:absolute;
      right:0;
      top:calc(100% + 14px);
      width:410px;
      opacity:0;
      visibility:hidden;
      transform:translateY(10px);
      transition:all .22s ease;
      background:rgba(255,255,255,.96);
      border:1px solid var(--border);
      border-radius:24px;
      box-shadow:var(--shadow-lg);
      padding:18px;
    }
    .mega-holder:hover .mega-panel,
    .mega-holder:focus-within .mega-panel{
      opacity:1;
      visibility:visible;
      transform:translateY(0);
    }
    .mega-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:12px;
    }
    .mega-card{
      border:1px solid var(--border);
      border-radius:18px;
      padding:14px;
      background:linear-gradient(180deg,#fff,#f8fbff);
    }
    .mega-card:hover{
      border-color:var(--border-strong);
      transform:translateY(-2px);
      box-shadow:var(--shadow-sm);
    }
    .mega-card strong{display:block;font-size:.95rem;margin-bottom:4px}
    .mega-card span{display:block;color:var(--muted);font-size:.82rem;line-height:1.55}

    .btn-brand{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      border:0;
      border-radius:999px;
      padding:13px 20px;
      background:linear-gradient(135deg,var(--primary),#60a5fa);
      color:#fff;
      font-weight:850;
      box-shadow:0 14px 28px rgba(37,99,235,.26);
      white-space:nowrap;
    }
    .btn-brand:hover,.btn-brand:focus{
      color:#fff;
      transform:translateY(-2px);
      box-shadow:0 18px 36px rgba(37,99,235,.32);
    }
    .btn-ghost{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      border:1px solid var(--border-strong);
      border-radius:999px;
      padding:12px 19px;
      color:var(--primary-dark);
      background:rgba(255,255,255,.82);
      font-weight:850;
      white-space:nowrap;
    }
    .btn-ghost:hover,.btn-ghost:focus{
      background:var(--primary-soft);
      border-color:var(--primary);
      transform:translateY(-2px);
      box-shadow:var(--shadow-sm);
    }
    .btn-line{
      display:inline-flex;
      align-items:center;
      gap:8px;
      font-weight:850;
      color:var(--primary-dark);
    }
    .btn-line:hover{gap:12px;color:var(--primary)}
    .badge-soft{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:6px 10px;
      border-radius:999px;
      background:#eff6ff;
      color:#1d4ed8;
      font-weight:800;
      font-size:.82rem;
    }

    .hero{
      padding:26px 0 70px;
    }
    .hero-stage{
      min-height:620px;
      border-radius:var(--radius-lg);
      position:relative;
      overflow:hidden;
      border:1px solid rgba(191,219,254,.9);
      box-shadow:var(--shadow-lg);
      background:
        linear-gradient(115deg,rgba(9,30,66,.74),rgba(30,64,175,.56) 48%,rgba(14,116,144,.42)),
        radial-gradient(circle at 78% 18%,rgba(147,197,253,.55),transparent 24%),
        radial-gradient(circle at 28% 78%,rgba(245,158,11,.24),transparent 28%),
        repeating-linear-gradient(90deg,rgba(255,255,255,.08) 0 1px,transparent 1px 96px),
        repeating-linear-gradient(0deg,rgba(255,255,255,.07) 0 1px,transparent 1px 96px),
        linear-gradient(135deg,#0f172a,#1e3a8a 54%,#e0f2fe);
    }
    .hero-stage:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 70% 45%, rgba(255,255,255,.22), transparent 16%),
        linear-gradient(180deg,transparent 0%,rgba(7,18,45,.28) 100%);
      pointer-events:none;
    }
    .series-bar{
      position:absolute;
      left:26px;
      right:26px;
      top:24px;
      z-index:2;
      display:flex;
      align-items:center;
      gap:12px;
      overflow-x:auto;
      padding:10px;
      border:1px solid rgba(255,255,255,.22);
      border-radius:999px;
      background:rgba(255,255,255,.14);
      backdrop-filter:blur(16px);
      scrollbar-width:none;
    }
    .series-bar::-webkit-scrollbar{display:none}
    .series-pill{
      display:inline-flex;
      align-items:center;
      gap:7px;
      color:#eef6ff;
      background:rgba(255,255,255,.14);
      border:1px solid rgba(255,255,255,.22);
      border-radius:999px;
      padding:9px 14px;
      white-space:nowrap;
      font-weight:800;
      font-size:.9rem;
    }
    .series-pill.active{
      background:#fff;
      color:var(--primary-dark);
      box-shadow:0 10px 24px rgba(15,23,42,.16);
    }
    .hero-content{
      position:relative;
      z-index:2;
      display:grid;
      grid-template-columns:minmax(0,1.06fr) minmax(360px,.72fr);
      gap:34px;
      align-items:end;
      min-height:620px;
      padding:126px 44px 44px;
    }
    .hero-copy{
      color:#fff;
      max-width:760px;
    }
    .hero-brand{
      display:inline-flex;
      align-items:center;
      gap:9px;
      padding:8px 13px;
      border-radius:999px;
      background:rgba(255,255,255,.16);
      border:1px solid rgba(255,255,255,.26);
      backdrop-filter:blur(14px);
      font-weight:850;
      margin-bottom:18px;
    }
    .hero h1{
      font-size:clamp(2.35rem, 5.2vw, 5.25rem);
      line-height:.98;
      letter-spacing:-.06em;
      margin:0 0 22px;
      font-weight:950;
      text-wrap:balance;
    }
    .hero-lead{
      max-width:690px;
      color:rgba(255,255,255,.88);
      font-size:1.08rem;
      margin:0 0 28px;
    }
    .hero-actions{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:14px;
      margin-bottom:28px;
    }
    .hero-actions .btn-ghost{
      color:#fff;
      border-color:rgba(255,255,255,.34);
      background:rgba(255,255,255,.13);
    }
    .hero-actions .btn-ghost:hover{
      background:rgba(255,255,255,.2);
      border-color:#fff;
    }
    .kpi-strip{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      max-width:720px;
    }
    .kpi-item{
      padding:16px;
      border-radius:18px;
      background:rgba(255,255,255,.14);
      border:1px solid rgba(255,255,255,.22);
      backdrop-filter:blur(16px);
    }
    .kpi-item strong{
      display:block;
      font-size:1.55rem;
      line-height:1;
      font-weight:950;
      margin-bottom:7px;
    }
    .kpi-item span{
      color:rgba(255,255,255,.82);
      font-size:.86rem;
    }
    .hero-panel{
      align-self:stretch;
      display:flex;
      flex-direction:column;
      justify-content:flex-end;
      gap:14px;
    }
    .store-card{
      background:rgba(255,255,255,.92);
      border:1px solid rgba(255,255,255,.68);
      box-shadow:0 22px 48px rgba(2,6,23,.2);
      border-radius:28px;
      padding:22px;
    }
    .store-top{
      display:flex;
      justify-content:space-between;
      gap:16px;
      align-items:flex-start;
      margin-bottom:16px;
    }
    .store-top h2{
      font-size:1.18rem;
      margin:0 0 4px;
      font-weight:900;
      letter-spacing:-.02em;
    }
    .store-top p{
      margin:0;
      color:var(--muted);
      font-size:.92rem;
    }
    .store-score{
      width:58px;
      height:58px;
      border-radius:18px;
      background:linear-gradient(135deg,#eff6ff,#dbeafe);
      display:grid;
      place-items:center;
      color:var(--primary-dark);
      font-weight:950;
      flex:0 0 auto;
    }
    .mini-metrics{
      display:grid;
      gap:10px;
    }
    .metric-row{
      display:grid;
      grid-template-columns:82px 1fr 42px;
      gap:10px;
      align-items:center;
      font-size:.9rem;
      color:#334155;
    }
    .metric-bar{
      height:9px;
      border-radius:999px;
      background:#e2e8f0;
      overflow:hidden;
    }
    .metric-bar span{
      display:block;
      height:100%;
      border-radius:999px;
      background:linear-gradient(90deg,var(--primary),#67e8f9);
    }
    .store-tags{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-top:17px;
    }
    .store-tag{
      padding:6px 9px;
      border-radius:999px;
      background:#f1f5f9;
      color:#475569;
      font-weight:750;
      font-size:.78rem;
    }

    .case-layout{
      display:grid;
      grid-template-columns:.86fr 1.14fr;
      gap:26px;
      align-items:stretch;
    }
    .case-feature{
      border-radius:var(--radius-lg);
      padding:30px;
      background:
        linear-gradient(160deg,rgba(37,99,235,.95),rgba(14,116,144,.86)),
        radial-gradient(circle at 20% 20%,rgba(255,255,255,.28),transparent 28%);
      color:#fff;
      min-height:430px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      box-shadow:var(--shadow-md);
      overflow:hidden;
      position:relative;
    }
    .case-feature:after{
      content:"";
      position:absolute;
      width:260px;height:260px;
      border:38px solid rgba(255,255,255,.13);
      border-radius:50%;
      right:-88px;bottom:-96px;
    }
    .case-feature h3{
      font-size:2rem;
      line-height:1.15;
      font-weight:900;
      margin:16px 0 12px;
      position:relative;
      z-index:1;
    }
    .case-feature p{color:rgba(255,255,255,.84);margin:0;position:relative;z-index:1}
    .case-list{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:18px;
    }
    .case-card,.content-card,.guide-card,.progress-card,.faq-shell{
      background:var(--surface);
      border:1px solid var(--border);
      border-radius:var(--radius);
      box-shadow:var(--shadow-sm);
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .case-card{
      padding:22px;
      min-height:206px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .case-card:hover,.content-card:hover,.guide-card:hover,.progress-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow-md);
      border-color:var(--border-strong);
    }
    .case-icon{
      width:46px;height:46px;border-radius:16px;
      display:grid;place-items:center;
      color:var(--primary-dark);
      background:var(--primary-soft);
      margin-bottom:14px;
    }
    .case-card h3{
      font-size:1.1rem;
      font-weight:900;
      margin:0 0 8px;
    }
    .case-card p{
      color:var(--muted);
      margin:0;
      font-size:.95rem;
    }
    .case-bottom{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-top:20px;
      color:var(--primary-dark);
      font-weight:850;
      font-size:.88rem;
    }

    .data-wrap{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:26px;
      align-items:center;
    }
    .data-board{
      background:#0f172a;
      color:#fff;
      border-radius:var(--radius-lg);
      padding:28px;
      box-shadow:var(--shadow-lg);
      position:relative;
      overflow:hidden;
    }
    .data-board:before{
      content:"";
      position:absolute;inset:0;
      background:
        radial-gradient(circle at 86% 10%,rgba(59,130,246,.32),transparent 26%),
        repeating-linear-gradient(90deg,rgba(255,255,255,.05) 0 1px,transparent 1px 72px);
    }
    .data-board > *{position:relative;z-index:1}
    .dashboard-title{
      display:flex;
      justify-content:space-between;
      gap:18px;
      align-items:center;
      padding-bottom:20px;
      border-bottom:1px solid rgba(255,255,255,.12);
      margin-bottom:20px;
    }
    .dashboard-title h3{font-size:1.28rem;font-weight:900;margin:0}
    .data-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:14px;
    }
    .data-cell{
      padding:18px;
      border-radius:18px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.12);
    }
    .data-cell strong{
      display:block;
      font-size:2.05rem;
      line-height:1;
      font-weight:950;
      margin-bottom:8px;
    }
    .data-cell span{color:rgba(255,255,255,.74);font-size:.9rem}
    .data-copy{
      padding:10px 0 10px 10px;
    }
    .check-list{
      display:grid;
      gap:14px;
      margin-top:24px;
      padding:0;
      list-style:none;
    }
    .check-list li{
      display:flex;
      gap:12px;
      align-items:flex-start;
      color:#334155;
      background:#fff;
      border:1px solid var(--border);
      border-radius:16px;
      padding:14px 16px;
      box-shadow:0 8px 20px rgba(15,36,66,.05);
    }
    .check-list i{color:var(--secondary);margin-top:5px}

    .compare-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:24px;
      align-items:stretch;
    }
    .compare-card{
      border-radius:var(--radius-lg);
      border:1px solid var(--border);
      background:#fff;
      box-shadow:var(--shadow-sm);
      overflow:hidden;
    }
    .compare-head{
      padding:24px 26px;
      border-bottom:1px solid var(--border);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .compare-head h3{margin:0;font-weight:900;font-size:1.28rem}
    .compare-body{padding:24px 26px}
    .compare-list{
      display:grid;
      gap:14px;
      padding:0;
      margin:0;
      list-style:none;
    }
    .compare-list li{
      display:grid;
      grid-template-columns:34px 1fr;
      gap:12px;
      align-items:start;
    }
    .compare-list .bad{
      color:#ef4444;
      background:#fff1f2;
    }
    .compare-list .good{
      color:#0f766e;
      background:#ecfdf5;
    }
    .compare-list i{
      width:34px;height:34px;border-radius:12px;
      display:grid;place-items:center;
      margin-top:2px;
    }
    .compare-list strong{display:block;margin-bottom:3px}
    .compare-list span{color:var(--muted);font-size:.94rem}
    .before .compare-head{background:#fff7ed}
    .after .compare-head{background:#eff6ff}

    .preview-shell{
      display:grid;
      grid-template-columns:.86fr 1.14fr;
      gap:24px;
      align-items:start;
    }
    .timeline{
      position:relative;
      display:grid;
      gap:16px;
      padding-left:24px;
    }
    .timeline:before{
      content:"";
      position:absolute;
      left:8px;
      top:8px;
      bottom:8px;
      width:2px;
      background:linear-gradient(var(--primary),#bae6fd);
      border-radius:999px;
    }
    .timeline-item{
      position:relative;
      padding:18px 20px;
      border-radius:18px;
      background:#fff;
      border:1px solid var(--border);
      box-shadow:var(--shadow-sm);
    }
    .timeline-item:before{
      content:"";
      position:absolute;
      left:-22px;
      top:24px;
      width:14px;height:14px;
      border-radius:50%;
      background:var(--primary);
      border:3px solid #fff;
      box-shadow:0 0 0 4px var(--primary-soft);
    }
    .timeline-item strong{display:block;font-weight:900;margin-bottom:5px}
    .timeline-item span{color:var(--muted);font-size:.94rem}
    .preview-panel{
      border-radius:var(--radius-lg);
      background:linear-gradient(135deg,#eff6ff,#ffffff 62%,#ecfeff);
      border:1px solid var(--border);
      padding:28px;
      box-shadow:var(--shadow-sm);
    }
    .preview-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:14px;
      margin-top:20px;
    }
    .content-card{
      padding:20px;
    }
    .content-card h3{font-size:1.02rem;font-weight:900;margin:0 0 8px}
    .content-card p{color:var(--muted);font-size:.92rem;margin:0}

    .guide-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:18px;
    }
    .guide-card{
      padding:24px;
    }
    .guide-num{
      width:40px;height:40px;border-radius:14px;
      display:grid;place-items:center;
      background:var(--primary-soft);
      color:var(--primary-dark);
      font-weight:950;
      margin-bottom:18px;
    }
    .guide-card h3{font-size:1.06rem;font-weight:900;margin:0 0 8px}
    .guide-card p{color:var(--muted);font-size:.94rem;margin:0}

    .progress-layout{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:24px;
    }
    .progress-card{
      padding:26px;
    }
    .task-row{
      display:flex;
      justify-content:space-between;
      gap:18px;
      align-items:center;
      margin-bottom:10px;
      font-weight:850;
    }
    .progress{
      height:12px;
      background:#e2e8f0;
      border-radius:999px;
      overflow:hidden;
      box-shadow:inset 0 1px 2px rgba(15,23,42,.05);
    }
    .progress-bar{
      background:linear-gradient(90deg,var(--primary),#67e8f9);
      border-radius:999px;
    }
    .reward-list{
      display:grid;
      gap:12px;
      margin:20px 0 0;
      padding:0;
      list-style:none;
    }
    .reward-list li{
      display:flex;
      gap:10px;
      align-items:center;
      color:#334155;
    }
    .reward-list i{color:var(--accent)}

    .news-layout{
      display:grid;
      grid-template-columns:minmax(0,1fr) 360px;
      gap:26px;
      align-items:start;
    }
    .news-list{
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-sm);
      overflow:hidden;
    }
    .news-item{
      display:grid;
      grid-template-columns:120px 1fr auto;
      gap:18px;
      align-items:center;
      padding:20px 22px;
      border-bottom:1px solid var(--border);
    }
    .news-item:last-child{border-bottom:0}
    .news-date{
      color:var(--primary-dark);
      background:var(--primary-soft);
      border-radius:14px;
      padding:10px 12px;
      text-align:center;
      font-weight:900;
      font-size:.9rem;
    }
    .news-item h3{
      font-size:1.04rem;
      margin:0 0 5px;
      font-weight:900;
    }
    .news-item p{
      color:var(--muted);
      margin:0;
      font-size:.92rem;
    }
    .news-item:hover{
      background:#f8fbff;
    }
    .news-item:hover h3{color:var(--primary-dark)}
    .recommend-card{
      border-radius:var(--radius-lg);
      background:#fff;
      border:1px solid var(--border);
      box-shadow:var(--shadow-sm);
      padding:24px;
      position:sticky;
      top:96px;
    }
    .recommend-card h3{font-weight:900;margin:0 0 14px}
    .recommend-list{
      display:grid;
      gap:12px;
      padding:0;
      margin:0;
      list-style:none;
    }
    .recommend-list a{
      display:flex;
      justify-content:space-between;
      gap:14px;
      border:1px solid var(--border);
      border-radius:15px;
      padding:13px 14px;
      color:#334155;
      font-weight:800;
    }
    .recommend-list a:hover{
      border-color:var(--border-strong);
      background:var(--primary-soft);
      color:var(--primary-dark);
      transform:translateX(2px);
    }

    .faq-shell{
      padding:12px;
    }
    .accordion-item{
      border:0;
      border-bottom:1px solid var(--border);
      background:transparent;
    }
    .accordion-item:last-child{border-bottom:0}
    .accordion-button{
      border-radius:16px!important;
      background:#fff;
      color:var(--ink);
      font-weight:900;
      padding:18px 20px;
      box-shadow:none!important;
    }
    .accordion-button:not(.collapsed){
      color:var(--primary-dark);
      background:var(--primary-soft);
    }
    .accordion-button:focus{box-shadow:var(--focus)!important}
    .accordion-body{
      color:var(--muted);
      padding:4px 20px 20px;
    }

    .contact-shell{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:28px;
      border-radius:var(--radius-lg);
      background:
        linear-gradient(135deg,#0f172a,#1e3a8a 58%,#2563eb);
      color:#fff;
      padding:34px;
      box-shadow:var(--shadow-lg);
      overflow:hidden;
      position:relative;
    }
    .contact-shell:before{
      content:"";
      position:absolute;
      inset:auto -90px -120px auto;
      width:320px;height:320px;
      border-radius:50%;
      background:rgba(255,255,255,.12);
    }
    .contact-info,.lead-form{position:relative;z-index:1}
    .contact-info h2{
      font-size:clamp(1.8rem,3vw,2.8rem);
      line-height:1.15;
      font-weight:950;
      letter-spacing:-.04em;
      margin:0 0 16px;
    }
    .contact-info p{
      color:rgba(255,255,255,.78);
      margin:0 0 24px;
    }
    .contact-points{
      display:grid;
      gap:12px;
      padding:0;
      margin:0;
      list-style:none;
    }
    .contact-points li{
      display:flex;
      gap:10px;
      align-items:center;
      color:rgba(255,255,255,.86);
    }
    .contact-points i{color:#93c5fd}
    .lead-form{
      background:rgba(255,255,255,.95);
      color:var(--ink);
      border-radius:24px;
      padding:24px;
      border:1px solid rgba(255,255,255,.6);
      box-shadow:0 22px 42px rgba(2,6,23,.18);
    }
    .lead-form h3{font-size:1.25rem;font-weight:900;margin:0 0 6px}
    .lead-form .hint{color:var(--muted);font-size:.92rem;margin:0 0 18px}
    .form-label{font-weight:850;color:#334155;margin-bottom:7px}
    .form-control,.form-select{
      min-height:48px;
      border-radius:14px;
      border:1px solid var(--border);
      background:#f8fbff;
      color:var(--ink);
      box-shadow:none!important;
    }
    textarea.form-control{min-height:116px;resize:vertical}
    .form-control:focus,.form-select:focus{
      border-color:var(--primary);
      background:#fff;
      box-shadow:var(--focus)!important;
    }
    .form-note{
      margin-top:12px;
      color:var(--muted);
      font-size:.84rem;
    }

    .site-footer{
      background:#071225;
      color:rgba(255,255,255,.78);
      padding:56px 0 26px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.15fr .85fr .85fr;
      gap:30px;
      padding-bottom:30px;
      border-bottom:1px solid rgba(255,255,255,.1);
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff;
      font-weight:950;
      margin-bottom:14px;
    }
    .footer-brand .brand-icon{width:40px;height:40px}
    .footer-grid p{margin:0;color:rgba(255,255,255,.68)}
    .footer-title{
      color:#fff;
      font-weight:900;
      margin-bottom:14px;
    }
    .footer-links{
      display:grid;
      gap:9px;
      padding:0;
      margin:0;
      list-style:none;
    }
    .footer-links a{
      color:rgba(255,255,255,.68);
    }
    .footer-links a:hover{color:#fff;transform:translateX(2px)}
    .copyright{
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      padding-top:22px;
      color:rgba(255,255,255,.55);
      font-size:.92rem;
    }

    @media (max-width: 1024px){
      .container{width:min(100% - 28px, 960px)}
      .hero-content{
        grid-template-columns:1fr;
        align-items:end;
      }
      .hero-panel{align-self:auto}
      .store-card{max-width:620px}
      .case-layout,.data-wrap,.preview-shell,.progress-layout,.contact-shell{
        grid-template-columns:1fr;
      }
      .guide-grid{grid-template-columns:repeat(2,1fr)}
      .news-layout{grid-template-columns:1fr}
      .recommend-card{position:static}
      .nav-search{display:none}
    }

    @media (max-width: 768px){
      :root{--nav-height:68px}
      .navbar-collapse{
        padding:16px 0 20px;
      }
      .main-nav{
        align-items:stretch;
      }
      .main-nav .nav-link{
        border-radius:16px;
      }
      .nav-actions{
        margin-left:0;
        align-items:stretch;
        flex-direction:column;
        width:100%;
      }
      .nav-search{
        display:flex;
        width:100%;
      }
      .mega-holder{width:100%}
      .mega-trigger{width:100%;justify-content:center}
      .mega-panel{
        position:static;
        width:100%;
        opacity:1;
        visibility:visible;
        transform:none;
        margin-top:12px;
        display:none;
      }
      .mega-holder:focus-within .mega-panel,
      .mega-holder:hover .mega-panel{display:block}
      .mega-grid{grid-template-columns:1fr}
      .section{padding:64px 0}
      .section-head{
        display:block;
      }
      .hero{padding:18px 0 52px}
      .hero-stage{min-height:auto;border-radius:24px}
      .series-bar{left:14px;right:14px;top:14px;border-radius:20px}
      .hero-content{
        min-height:auto;
        padding:112px 20px 22px;
      }
      .hero h1{font-size:clamp(2.2rem, 13vw, 3.7rem)}
      .kpi-strip{grid-template-columns:1fr}
      .case-list,.data-grid,.compare-grid,.preview-grid{
        grid-template-columns:1fr;
      }
      .news-item{
        grid-template-columns:1fr;
        gap:10px;
      }
      .news-date{text-align:left;width:max-content}
      .footer-grid{
        grid-template-columns:1fr;
      }
    }

    @media (max-width: 520px){
      .container{width:calc(100% - 22px)}
      .brand-sub{display:none}
      .brand-text{font-size:.94rem}
      .brand-icon{width:38px;height:38px}
      .hero-lead{font-size:1rem}
      .hero-actions{align-items:stretch}
      .hero-actions a{width:100%}
      .store-top{flex-direction:column}
      .metric-row{grid-template-columns:72px 1fr 36px}
      .guide-grid{grid-template-columns:1fr}
      .contact-shell{padding:22px;border-radius:24px}
      .lead-form{padding:18px;border-radius:20px}
      .copyright{display:block}
      .copyright span{display:block;margin-bottom:8px}
    }

/* 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}