: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);
      }

      /* HERO */
      .hero{
        background:
          radial-gradient(900px 360px at 70% 10%, rgba(29,118,255,.16) 0%, rgba(29,118,255,0) 60%),
          radial-gradient(700px 280px at 20% 30%, rgba(24,200,255,.18) 0%, rgba(24,200,255,0) 60%),
          linear-gradient(#ffffff, #ffffff);
        position: relative;
        overflow: hidden;
      }
      .hero:before{
        content:"";
        position:absolute; left:-240px; top:-320px;
        width: 720px; height: 720px; border-radius: 50%;
        background: radial-gradient(circle at 30% 30%, rgba(24,200,255,.25), rgba(29,118,255,0) 62%);
        filter: blur(0px);
      }
      .hero:after{
        content:"";
        position:absolute; right:-320px; top:-360px;
        width: 900px; height: 900px; border-radius: 50%;
        background: radial-gradient(circle at 30% 30%, rgba(29,118,255,.22), rgba(29,118,255,0) 62%);
      }
      .hero__grid{
        position: relative;
        padding: 34px 0 32px;
        display:grid;
        grid-template-columns: 1.25fr .75fr;
        gap: 18px;
        align-items: stretch;
      }
      .crumbs{
        display:flex; flex-wrap:wrap; gap: 10px; align-items:center;
        font-size: 13px;
        color: rgba(31,45,61,.65);
        margin-bottom: 6px;
      }
      .crumbs a{ color: rgba(31,45,61,.72); }
      .crumbs .sep{ opacity:.5; }
      .hero__kicker{
        display:inline-flex; align-items:center; gap: 10px;
        color: #2b5fff;
        font-weight: 600;
        font-size: 13px;
      }
      .dot{
        width: 8px; height: 8px; border-radius: 50%;
        background: linear-gradient(90deg, var(--cyan), var(--blue2));
        box-shadow: 0 0 0 6px rgba(29,118,255,.12);
      }
      .hero__title{
        font-size: 30px;
        line-height: 1.25;
        margin: 14px 0 10px;
        letter-spacing:.4px;
      }
      .hero__desc{
        margin:0;
        color: var(--muted);
        font-size: 14px;
        line-height: 1.85;
        max-width: 700px;
      }
      .heroBadges{
        margin-top: 16px;
        display:flex; gap: 10px; flex-wrap:wrap;
      }
      .pill{
        display:inline-flex; align-items:center; gap: 8px;
        font-size: 12px;
        padding: 7px 10px;
        border-radius: 999px;
        background: rgba(29,118,255,.08);
        border: 1px solid rgba(29,118,255,.12);
        color: #1a55d6;
      }
      .pill i{
        width: 8px; height: 8px; border-radius: 50%;
        background: linear-gradient(90deg, var(--cyan), var(--blue2));
        display:inline-block;
      }
      .hero__meta{
        display:flex; gap: 18px; align-items:center;
        margin-top: 20px;
        padding-top: 18px;
        border-top: 1px solid rgba(31,45,61,.08);
      }
      .metaItem{ display:flex; gap: 10px; align-items:flex-start; }
      .metaIcon{
        width: 34px; height: 34px; border-radius: 10px;
        background: rgba(29,118,255,.1);
        display:grid; place-items:center;
        color: var(--blue2);
        font-weight: 700;
      }
      .metaTxt strong{ display:block; font-size: 14px; }
      .metaTxt span{ display:block; font-size: 12px; color: var(--muted); margin-top: 2px; }
      .hero__cta{ display:flex; gap: 12px; flex-wrap:wrap; margin-top: 18px; }

      .heroPanel{
        border-radius: 18px;
        background: rgba(255,255,255,.86);
        border: 1px solid rgba(29,118,255,.14);
        box-shadow: var(--shadow2);
        overflow:hidden;
        height: 86%;
      }
      .heroPanel__head{
        padding: 14px 16px 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,.62); line-height:1.6; }
      .heroPanel__body{ padding: 12px 16px 16px; }
      .miniList{ margin:0; padding:0; list-style:none; display:flex; flex-direction:column; gap: 10px; }
      .miniList li{
        display:flex; gap: 10px; align-items:flex-start;
        color: #2b3f57;
        font-size: 13px;
        line-height: 1.7;
      }
      .miniList li:before{
        content:"";
        width: 8px; height: 8px; border-radius: 3px;
        background: linear-gradient(90deg, var(--cyan), var(--blue2));
        margin-top: 6px;
        flex: 0 0 auto;
      }

      /* Feature strip */
      .strip{
        padding: 16px 0 34px;
      }
      .strip__grid{
        display:grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 18px;
      }
      .stripCard{
        border-radius: 14px;
        border: 1px solid rgba(31,45,61,.08);
        background: linear-gradient(180deg, #fff, #fbfdff);
        box-shadow: 0 12px 24px rgba(16, 66, 158, .06);
        padding: 16px 16px 14px;
        display:flex; gap: 12px; align-items:center;
      }
      .stripIcon{
        width: 44px; height: 44px; border-radius: 12px;
        display:grid; place-items:center;
        background: rgba(29,118,255,.10);
        color: var(--blue2);
        font-weight: 800;
      }
      .stripTxt strong{ display:block; font-size: 14px; }
      .stripTxt span{ display:block; margin-top: 3px; font-size: 12px; color: var(--muted); }

      /* Sections */
      .section{ padding: 58px 0; }
      .section--soft{ background: var(--bg); }
      .secHead{
        text-align:center;
        margin-bottom: 26px;
      }
      .secHead h2{
        margin:0;
        font-size: 28px;
        letter-spacing:.4px;
      }
      .secHead p{
        margin: 10px auto 0;
        color: var(--muted);
        font-size: 14px;
        max-width: 820px;
        line-height:1.75;
      }

      /* Cards row */
      .bizCards{
        display:grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 18px;
        margin-top: 18px;
      }
      .bizCard{
        border-radius: 16px;
        background: #fff;
        border: 1px solid rgba(31,45,61,.08);
        box-shadow: var(--shadow2);
        padding: 18px 18px 16px;
        position: relative;
        overflow:hidden;
      }
      .bizCard:before{
        content:"";
        position:absolute; right:-60px; top:-60px;
        width: 160px; height: 160px; border-radius: 50%;
        background: radial-gradient(circle at 30% 30%, rgba(24,200,255,.26), rgba(29,118,255,0) 70%);
      }
      .bizCard__top{ display:flex; gap: 12px; align-items:center; }
      .bizIco{
        width: 46px; height: 46px; border-radius: 14px;
        display:grid; place-items:center;
        background: linear-gradient(135deg, rgba(24,200,255,.18), rgba(29,118,255,.12));
        border: 1px solid rgba(29,118,255,.16);
        color: var(--blue2);
        font-weight: 900;
      }
      .bizCard h3{ margin:0; font-size: 16px; }
      .bizCard p{ margin: 10px 0 0; color: var(--muted); font-size: 13px; line-height: 1.8; }
      .bizBadges{ display:flex; flex-wrap:wrap; gap: 8px; margin-top: 12px; }
      .tag{
        font-size: 12px;
        padding: 6px 10px;
        border-radius: 999px;
        background: rgba(29,118,255,.08);
        border: 1px solid rgba(29,118,255,.12);
        color: #1a55d6;
      }

      /* Scene cards */
      .sceneGrid{
        margin-top: 18px;
        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: 14px 14px 12px;
        box-shadow: 0 10px 18px rgba(16, 66, 158, .05);
      }
      .scene strong{ display:flex; align-items:center; gap: 10px; font-size: 14px; }
      .scene strong:before{
        content:"";
        width: 10px; height: 10px; border-radius: 3px;
        background: linear-gradient(90deg, var(--cyan), var(--blue2));
      }
      .scene p{ margin: 8px 0 0; font-size: 12px; color: rgba(31,45,61,.62); line-height:1.75; }

      /* Advantages */
      .advGrid{
        margin-top: 18px;
        display:grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 14px;
      }
      .adv{
        border-radius: 16px;
        border: 1px solid rgba(31,45,61,.08);
        background:#fff;
        padding: 14px 14px 12px;
      }
      .adv strong{ font-size: 14px; display:block; }
      .adv p{ margin: 6px 0 0; font-size: 12px; color: rgba(31,45,61,.7); line-height:1.7; }

      /* 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; }
        .hero__grid{ grid-template-columns: 1fr; }
        .strip__grid{ grid-template-columns: repeat(2, 1fr); }
        .bizCards{ grid-template-columns: 1fr; }
        .sceneGrid{ grid-template-columns: 1fr; }
        .advGrid{ grid-template-columns: repeat(2, 1fr); }
        .footerGrid{ grid-template-columns: 1fr 1fr; }
      }
      @media (max-width: 520px){
        .topbar__right{ display:none; }
        .strip__grid{ grid-template-columns: 1fr; }
        .ctaBox{ flex-direction:column; align-items:flex-start; }
        .floatBar{ right: 10px; }
        .advGrid{ grid-template-columns: 1fr; }
      }