:root{--w: 1200px;--text: #1f2d3d;--muted: #6b7a90;--line: rgba(31,45,61,.12);--blue: #1d76ff;--blue2: #0b5cff;--cyan: #18c8ff;--bg: #f6f9ff;--shadow: 0 18px 50px rgba(16, 66, 158, .14);--shadow2: 0 10px 30px rgba(10, 45, 120, .12);--r: 14px;}
      *{ box-sizing:border-box; }
      html,body{ height:100%; }
      body{
        margin:0;
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC","Microsoft YaHei", Arial, sans-serif;
        color: var(--text);
        background: #fff;
      }
      a{ color:inherit; text-decoration:none; }
      img{ max-width:100%; display:block; }
      .wrap{ width: min(var(--w), calc(100% - 40px)); margin: 0 auto; }
      .topbar{
        position: sticky; top:0; z-index: 50;
        background: rgba(255,255,255,.86);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(31,45,61,.08);
      }
      .topbar__inner{
        height: 72px;
        display:flex;
        align-items:center;
        justify-content:space-between;
        gap: 18px;
      }
      .brand{ display:flex; align-items:center; gap: 10px; min-width: 240px; }
      .brand__mark{
        width: 36px; height: 36px; border-radius: 10px;
        background: radial-gradient(60% 60% at 35% 30%, #9fe7ff 0%, #43b8ff 40%, #1d76ff 100%);
        box-shadow: 0 10px 18px rgba(29,118,255,.18);
        position: relative;
      }
      .brand__mark:after{
        content:"";
        position:absolute; inset: 9px 10px 11px 10px;
        border-radius: 10px;
        background: linear-gradient(135deg, rgba(255,255,255,.95), rgba(255,255,255,.3));
        transform: rotate(12deg);
        opacity:.9;
      }
      .brand__txt{ display:flex; flex-direction:column; line-height:1.1; }
      .brand__name{ font-weight: 700; letter-spacing:.5px; }
      .brand__sub{ font-size: 12px; color: var(--muted); margin-top: 3px; }
      .nav{ display:flex; align-items:center; gap: 22px; white-space:nowrap; }
      .nav a{
        font-size: 14px;
        color: #334a63;
        padding: 8px 2px;
        position: relative;
      }
      .nav a.is-active{ color: var(--blue2); font-weight: 600; }
      .nav a.is-active:after{
        content:""; position:absolute; left:0; right:0; bottom:-12px; margin:auto;
        width: 26px; height: 3px; border-radius: 2px;
        background: linear-gradient(90deg, var(--cyan), var(--blue2));
      }
      .topbar__right{ display:flex; align-items:center; gap: 10px; }
      .btn{
        border: 1px solid rgba(29,118,255,.25);
        border-radius: 999px;
        padding: 10px 16px;
        font-size: 14px;
        line-height: 1;
        display:inline-flex; align-items:center; justify-content:center; gap: 8px;
        cursor:pointer;
        user-select:none;
      }
      .btn--ghost{ background: #fff; color: var(--blue2); }
      .btn--primary{
        background: linear-gradient(90deg, #1d76ff, #0b5cff);
        border-color: transparent;
        color: #fff;
        box-shadow: 0 12px 24px rgba(29,118,255,.24);
      }

      /* 页面头图（为当前 HTML 类名配套） */
      .pageHero{
        padding: 40px 0 28px;
        background:
          radial-gradient(900px 360px at 20% 0%, rgba(24,200,255,.16), rgba(24,200,255,0) 60%),
          linear-gradient(180deg, #ffffff, #f5f7ff);
        border-bottom: 1px solid rgba(31,45,61,.08);
      }
      .crumbs{
        display:flex;
        flex-wrap:wrap;
        gap: 10px;
        align-items:center;
        font-size: 13px;
        color: rgba(31,45,61,.65);
      }
      .crumbs a{ color: rgba(31,45,61,.72); }
      .crumbs .sep{ opacity:.5; }
      .pageHero__grid{
        margin-top: 16px;
        display:grid;
        grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
        gap: 22px;
        align-items:flex-start;
      }
      .pageTitle{
        margin: 6px 0 10px;
        font-size: 30px;
        line-height: 1.3;
        letter-spacing:.4px;
        max-width: 680px;
      }
      .pageTitle span{
        display:inline-block;
        padding: 3px 10px;
        margin-bottom: 8px;
        font-size: 12px;
        border-radius: 999px;
        background: rgba(24,200,255,.08);
        border: 1px solid rgba(24,200,255,.4);
        color:#1a55d6;
      }
      .pageLead{
        margin: 0;
        color: var(--muted);
        font-size: 14px;
        line-height: 1.9;
        max-width: 680px;
      }
      .heroBadges{
        margin-top: 16px;
        display:flex;
        gap: 10px;
        flex-wrap:wrap;
      }
      .heroActions{
        margin-top: 18px;
        display:flex;
        gap: 12px;
        flex-wrap:wrap;
      }
      .heroMetaRow{
        margin-top: 22px;
        display:grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 12px;
      }
      .heroStat{
        border-radius: 14px;
        border: 1px solid rgba(29,118,255,.16);
        background: rgba(255,255,255,.9);
        padding: 10px 12px;
        box-shadow: 0 10px 22px rgba(16,66,158,.06);
      }
      .heroStat strong{
        display:block;
        font-size: 16px;
        color:#1a55d6;
      }
      .heroStat span{
        display:block;
        margin-top: 4px;
        font-size: 12px;
        color: var(--muted);
      }
      .heroPanel{
        border-radius: 18px;
        border: 1px solid rgba(31,45,61,.1);
        background:#ffffff;
        box-shadow: var(--shadow2);
        overflow:hidden;
      }
      .heroPanel__head{
        padding: 14px 18px 12px;
        background: linear-gradient(90deg, rgba(29,118,255,.10), rgba(24,200,255,.06));
        border-bottom: 1px solid rgba(31,45,61,.08);
      }
      .heroPanel__head strong{ display:block; font-size: 14px; }
      .heroPanel__head span{ display:block; margin-top: 5px; font-size: 12px; color: rgba(31,45,61,.7); line-height:1.7; }
      .heroPanel__body{ padding: 14px 18px 16px; }
      .miniList{
        margin:0;
        padding:0;
        list-style:none;
        display:flex;
        flex-direction:column;
        gap: 10px;
        font-size: 13px;
        color:#2b3f57;
      }
      .miniList li{
        display:flex;
        flex-direction:column;
        gap: 3px;
        position: relative;
        padding-left: 14px;
        line-height: 1.7;
      }
      .miniList li:before{
        content:"";
        position:absolute;
        left: 0;
        top: 7px;
        width: 8px; height: 8px;
        border-radius:3px;
        background: linear-gradient(90deg, var(--cyan), var(--blue2));
      }
      .miniList small{
        font-size: 11px;
        color: rgba(31,45,61,.65);
      }

      /* 主体区块布局（pageSection / card 等） */
      .pageSection{
        padding: 34px 0 58px;
      }
      .pageSection--soft{
        background: var(--bg);
      }
      .sectionHead{
        margin-bottom: 24px;
        display:flex;
        align-items:flex-start;
        justify-content:space-between;
        gap: 18px;
      }
      .sectionHead h2{
        margin:0;
        font-size: 24px;
        letter-spacing:.4px;
      }
      .sectionHead p{
        margin:0;
        max-width: 640px;
        color: var(--muted);
        font-size: 13px;
        line-height:1.85;
      }
      .layout{
        max-width: 100%;
      }
      .content{
        display:flex;
        flex-direction:column;
        gap: 18px;
      }
      .card{
        border-radius: 18px;
        border: 1px solid rgba(31,45,61,.08);
        background:#fff;
        box-shadow: var(--shadow2);
        padding: 18px 18px 16px;
      }
      .card h3{
        margin: 0;
        font-size: 16px;
      }
      .card h2{
        margin: 0;
        font-size: 18px;
      }
      .card p{
        margin: 10px 0 0;
        color: var(--muted);
        font-size: 13px;
        line-height: 1.9;
      }
      .twoCol{
        margin-top: 14px;
        display:grid;
        grid-template-columns: 1fr 1fr;
        gap: 14px;
      }
      .kv{
        border-radius: 16px;
        border: 1px solid rgba(31,45,61,.08);
        background: linear-gradient(180deg, #fff, #fbfdff);
        padding: 12px 14px 10px;
      }
      .kv strong{
        display:block;
        font-size: 13px;
      }
      .kv span{
        display:block;
        margin-top: 5px;
        font-size: 12px;
        color: rgba(31,45,61,.64);
        line-height: 1.8;
      }
      .sceneGrid{
        margin-top: 14px;
        display:grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
      }
      .scene{
        border-radius: 16px;
        border: 1px solid rgba(31,45,61,.08);
        background:#fff;
        padding: 12px 12px 10px;
        box-shadow: 0 10px 18px rgba(16,66,158,.05);
      }
      .scene strong{
        display:flex;
        align-items:center;
        gap: 8px;
        font-size: 13px;
      }
      .scene strong:before{
        content:"";
        width: 9px; height: 9px;
        border-radius:3px;
        background: linear-gradient(90deg, var(--cyan), var(--blue2));
      }
      .scene p{
        margin: 6px 0 0;
        font-size: 12px;
        color: rgba(31,45,61,.7);
        line-height: 1.7;
      }

      .faq{
        margin-top: 12px;
        display:flex;
        flex-direction:column;
        gap: 10px;
      }
      details.faqItem{
        border-radius: 16px;
        border: 1px solid rgba(31,45,61,.08);
        background: #fff;
        padding: 12px 14px;
      }
      details.faqItem summary{
        cursor:default;
        pointer-events:none;
        list-style:none;
        display:flex;
        align-items:center;
        justify-content:space-between;
        gap: 12px;
        font-size: 13px;
        font-weight: 700;
        color: #1f3e66;
      }
      details.faqItem summary::-webkit-details-marker{ display:none; }
      details.faqItem .faqBody{
        margin-top: 10px;
        color: rgba(31,45,61,.68);
        font-size: 13px;
        line-height: 1.85;
      }

      /* CTA + footer */
      .ctaBand{
        padding: 50px 0;
        background:
          radial-gradient(800px 360px at 30% 10%, rgba(24,200,255,.22), rgba(24,200,255,0) 60%),
          radial-gradient(900px 360px at 80% 40%, rgba(29,118,255,.18), rgba(29,118,255,0) 60%),
          linear-gradient(180deg, #fff, #f7fbff);
      }
      .ctaBox{
        border-radius: 18px;
        border: 1px solid rgba(29,118,255,.14);
        background: linear-gradient(90deg, rgba(29,118,255,.08), rgba(24,200,255,.06));
        box-shadow: var(--shadow2);
        padding: 26px 24px;
        display:flex; align-items:center; justify-content:space-between; gap: 18px;
      }
      .ctaBox strong{ font-size: 18px; }
      .ctaBox span{ display:block; margin-top: 6px; color: var(--muted); font-size: 13px; }
      .footer{
        background: #0b1830;
        color: rgba(255,255,255,.82);
        padding: 44px 0 28px;
      }
      .footerGrid{
        display:grid;
        grid-template-columns: 1.1fr 1fr 1fr 280px;
        gap: 18px;
        align-items:flex-start;
      }
      .footerBrand{
        display:flex; gap: 10px; align-items:flex-start;
      }
      .footerBrand .brand__mark{ box-shadow:none; }
      .footerBrand strong{ color:#fff; display:block; }
      .footerBrand span{ color: rgba(255,255,255,.62); font-size: 12px; display:block; margin-top:6px; line-height:1.7; }
      .fCol h5{ margin: 0 0 10px; color:#fff; font-size: 14px; }
      .fCol a{ display:block; padding: 7px 0; color: rgba(255,255,255,.72); font-size: 13px; }
      .fCol a:hover{ color:#fff; }
      .qrBox{
        border-radius: 16px;
        border: 1px solid rgba(255,255,255,.16);
        background: rgba(255,255,255,.06);
        padding: 14px;
      }
      .qrCode{
        height: 148px; border-radius: 14px;
        background:
          linear-gradient(135deg, rgba(255,255,255,.20), rgba(255,255,255,.08));
        border: 1px dashed rgba(255,255,255,.22);
      }
      .qrBox p{ margin: 10px 0 0; font-size: 12px; color: rgba(255,255,255,.68); }
      .footerBottom{
        margin-top: 20px;
        padding-top: 18px;
        border-top: 1px solid rgba(255,255,255,.12);
        display:flex; align-items:center; justify-content:space-between; gap: 12px;
        font-size: 12px;
        color: rgba(255,255,255,.62);
      }

      /* Floating toolbar */
      .floatBar{
        position: fixed;
        right: 18px;
        top: 50%;
        transform: translateY(-50%);
        z-index: 60;
        display:flex;
        flex-direction:column;
        gap: 10px;
      }
      .floatBtn{
        width: 44px; height: 44px;
        border-radius: 12px;
        border: 1px solid rgba(31,45,61,.12);
        background: rgba(255,255,255,.92);
        box-shadow: 0 14px 30px rgba(10, 45, 120, .12);
        display:grid; place-items:center;
        cursor:pointer;
        position: relative;
      }
      .floatBtn:hover{ transform: translateY(-1px); }
      .floatBtn span{ font-size: 18px; }
      .floatTip{
        position:absolute;
        right: 52px;
        top: 50%;
        transform: translateY(-50%);
        background: #0b1830;
        color: rgba(255,255,255,.9);
        border: 1px solid rgba(255,255,255,.12);
        padding: 10px 12px;
        border-radius: 12px;
        white-space:nowrap;
        box-shadow: 0 18px 40px rgba(0,0,0,.18);
        opacity: 0;
        visibility: hidden;
        transition: all .16s ease;
      }
      .floatBtn:hover .floatTip{ opacity: 1; visibility: visible; right: 56px; }
      .floatTip small{ display:block; color: rgba(255,255,255,.68); margin-top: 2px; font-size: 12px; }

      /* Responsive */
      @media (max-width: 980px){
        .nav{ display:none; }
        .pageHero__grid{ grid-template-columns: 1fr; }
        .heroMetaRow{ grid-template-columns: 1fr 1fr; }
        .twoCol{ grid-template-columns: 1fr; }
        .sceneGrid{ grid-template-columns: 1fr 1fr; }
        .footerGrid{ grid-template-columns: 1fr 1fr; }
      }
      @media (max-width: 520px){
        .topbar__right{ display:none; }
        .heroMetaRow{ grid-template-columns: 1fr; }
        .sceneGrid{ grid-template-columns: 1fr; }
        .ctaBox{ flex-direction:column; align-items:flex-start; margin-top: 12px; }
        .floatBar{ right: 10px; }
      }