:root{
      --bg1:#f7fbfb;
      --bg2:#eef7f7;
      --ink:#20303a;
      --muted:#5b6b74;
      --card:#ffffffcc;
      --cardSolid:#ffffff;
      --line:#d6e6e6;
      --brand:#1b7c7a;
      --brand2:#0d5f60;
      --accent:#2ea0a3;
      --shadow: 0 18px 40px rgba(10,40,40,.10);
      --shadow2: 0 10px 22px rgba(10,40,40,.10);
      --radius:18px;
      --radius2:12px;
      --focus: 0 0 0 4px rgba(46,160,163,.18);
      --max: 1120px;
    }
    *{box-sizing:border-box}
    body{
      margin:0;
      font-family: ui-sans-serif, system-ui, -apple-system, "PingFang SC","Hiragino Sans GB","Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      color:var(--ink);
      background: radial-gradient(1200px 700px at 10% -10%, #dff3f2 0%, rgba(223,243,242,0) 55%),
                  radial-gradient(900px 500px at 90% 0%, #d7f0ea 0%, rgba(215,240,234,0) 52%),
                  linear-gradient(180deg, var(--bg1), var(--bg2));
      overflow-x:hidden;
    }
    a{color:var(--brand2); text-decoration:none}
    a:hover{ text-decoration: underline; }
    .container{
      width:100%;
      max-width:var(--max);
      padding: 0 18px;
      margin: 0 auto;
    }
    .skip{
      position:absolute; left:-999px; top:auto; width:1px; height:1px; overflow:hidden;
    }
    .skip:focus{
      left:16px; top:16px; width:auto; height:auto; padding:10px 12px;
      background:#0f6a6a; color:#fff; border-radius:10px; z-index:9999;
      outline:none;
    }

    header.site-header{
      position:sticky; top:0; z-index:50;
      background: linear-gradient(180deg, rgba(247,251,251,.92), rgba(247,251,251,.72));
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(214,230,230,.65);
    }
    .navbar{
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding: 14px 0;
      gap:12px;
    }
    .brand{
      display:flex; align-items:center; gap:10px;
      min-width: 110px;
    }
    .logo{
      width:36px; height:36px; border-radius:12px;
      background: linear-gradient(135deg, rgba(27,124,122,.14), rgba(13,95,96,.18));
      border: 1px solid rgba(27,124,122,.26);
      display:grid; place-items:center;
      box-shadow: 0 10px 18px rgba(10,40,40,.08);
      color: var(--brand2);
      font-weight:800;
      letter-spacing:.5px;
    }
    .brand-title{
      display:flex; flex-direction:column; line-height:1.05;
    }
    .brand-title strong{font-size:14px}
    .brand-title span{font-size:12px; color:var(--muted)}
    nav.desktop-nav{
      display:flex; align-items:center; gap:18px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .nav-link{
      font-size:13px;
      color: var(--muted);
      padding: 8px 10px;
      border-radius: 12px;
      transition: background .2s ease, color .2s ease, transform .2s ease;
    }
    .nav-link:hover{
      background: rgba(46,160,163,.10);
      color: var(--brand2);
      text-decoration:none;
      transform: translateY(-1px);
    }

    .nav-cta{
      display:flex; align-items:center; gap:10px;
      margin-left: 6px;
    }
    .btn{
      display:inline-flex; align-items:center; justify-content:center;
      gap:10px;
      padding: 10px 14px;
      border-radius: 14px;
      border: 1px solid rgba(27,124,122,.24);
      background: rgba(255,255,255,.72);
      color: var(--brand2);
      font-weight:700;
      font-size:13px;
      box-shadow: 0 8px 18px rgba(10,40,40,.08);
      transition: transform .15s ease, background .2s ease, box-shadow .2s ease;
      white-space:nowrap;
    }
    .btn:hover{ transform: translateY(-1px); background:#fff; box-shadow: 0 14px 26px rgba(10,40,40,.12);}
    .btn:focus{outline:none; box-shadow: var(--focus), 0 14px 26px rgba(10,40,40,.12);}
    .btn.primary{
      background: linear-gradient(135deg, rgba(27,124,122,.95), rgba(13,95,96,.92));
      border-color: rgba(27,124,122,.35);
      color:#fff;
      box-shadow: 0 16px 34px rgba(13,95,96,.22);
    }
    .btn.primary:hover{
      background: linear-gradient(135deg, rgba(27,124,122,1), rgba(13,95,96,1));
      box-shadow: 0 18px 42px rgba(13,95,96,.26);
    }
    .btn .dot{
      width:9px; height:9px; border-radius:50%;
      background: rgba(255,255,255,.95);
      box-shadow: 0 0 0 4px rgba(255,255,255,.22);
    }

    .mobile-nav{
      display:none;
      align-items:center;
      gap:10px;
    }
    .hamburger{
      width:44px; height:44px; border-radius:14px;
      border:1px solid rgba(27,124,122,.24);
      background: rgba(255,255,255,.78);
      display:grid; place-items:center;
      transition: transform .15s ease, background .2s ease;
      box-shadow: 0 10px 20px rgba(10,40,40,.08);
      cursor:pointer;
    }
    .hamburger:hover{transform: translateY(-1px); background:#fff;}
    .hamburger:focus{outline:none; box-shadow: var(--focus), 0 10px 20px rgba(10,40,40,.08);}
    .hamburger svg{width:20px; height:20px; color: var(--brand2);}
    .menu-panel{
      display:none;
      padding: 12px 0 18px;
    }
    .menu-panel.open{display:block; animation: popin .18s ease-out both;}
    @keyframes popin{
      from{opacity:0; transform: translateY(-6px)}
      to{opacity:1; transform: translateY(0)}
    }
    .menu-grid{
      display:grid; gap:10px;
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .menu-item{
      padding: 12px 12px;
      border-radius: 14px;
      border: 1px solid rgba(214,230,230,.8);
      background: rgba(255,255,255,.62);
      color: var(--muted);
      font-weight:700;
      font-size:13px;
      transition: background .2s ease, transform .15s ease;
      text-align:left;
    }
    .menu-item:hover{background: rgba(255,255,255,.92); transform: translateY(-1px); text-decoration:none;}
    .menu-item:focus{outline:none; box-shadow: var(--focus);}

    main{
      padding: 26px 0 22px;
    }

    .hero{
      padding: 22px 0 10px;
    }
    .hero-wrap{
      position:relative;
      background: linear-gradient(180deg, rgba(255,255,255,.70), rgba(255,255,255,.52));
      border: 1px solid rgba(214,230,230,.9);
      border-radius: calc(var(--radius) + 6px);
      box-shadow: var(--shadow);
      overflow:hidden;
    }
    .hero-wrap::before{
      content:"";
      position:absolute; inset:-2px;
      background:
        radial-gradient(500px 220px at 15% 10%, rgba(46,160,163,.20), rgba(46,160,163,0) 60%),
        radial-gradient(420px 240px at 85% 15%, rgba(27,124,122,.18), rgba(27,124,122,0) 62%),
        radial-gradient(520px 300px at 50% 110%, rgba(13,95,96,.10), rgba(13,95,96,0) 60%);
      pointer-events:none;
    }
    .hero-inner{
      position:relative;
      padding: 26px 20px 18px;
    }
    .hero-top{
      display:grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 16px;
      align-items:start;
    }
    .kicker{
      display:inline-flex; align-items:center; gap:10px;
      padding: 8px 12px;
      border-radius: 999px;
      border: 1px solid rgba(214,230,230,.9);
      background: rgba(255,255,255,.65);
      color: var(--brand2);
      font-weight:800;
      font-size:13px;
      letter-spacing:.2px;
      margin-bottom: 12px;
    }
    .kicker .spark{
      width:10px; height:10px; border-radius: 50%;
      background: linear-gradient(180deg, rgba(46,160,163,1), rgba(13,95,96,1));
      box-shadow: 0 0 0 4px rgba(46,160,163,.18);
    }
    h1{
      margin:0 0 10px;
      font-size: clamp(22px, 2.6vw, 34px);
      line-height:1.15;
      letter-spacing:.2px;
    }
    .lead{
      margin:0;
      color: var(--muted);
      font-size: 14.5px;
      line-height:1.8;
      max-width: 62ch;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top: 14px;
      align-items:center;
    }

    .quick-card{
      background: rgba(255,255,255,.70);
      border: 1px solid rgba(214,230,230,.9);
      border-radius: var(--radius);
      box-shadow: var(--shadow2);
      padding: 14px 14px;
      animation: floaty 7s ease-in-out infinite;
      transform-origin:center;
    }
    @keyframes floaty{
      0%,100%{transform: translateY(0)}
      50%{transform: translateY(-6px)}
    }
    .quick-title{
      display:flex; align-items:center; justify-content:space-between;
      gap:10px;
      margin-bottom: 10px;
    }
    .quick-title strong{
      font-size:14px;
    }
    .badge{
      font-size:12px;
      font-weight:800;
      color: var(--brand2);
      background: rgba(46,160,163,.14);
      border: 1px solid rgba(46,160,163,.22);
      padding: 7px 10px;
      border-radius: 999px;
      white-space:nowrap;
    }
    .checklist{
      display:grid;
      gap:10px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .check{
      display:flex; gap:10px; align-items:flex-start;
      padding: 10px 10px;
      border-radius: 14px;
      border: 1px solid rgba(214,230,230,.75);
      background: rgba(255,255,255,.6);
      transition: transform .15s ease, background .2s ease;
    }
    .check:hover{transform: translateY(-1px); background: rgba(255,255,255,.86);}
    .check .ic{
      width:24px; height:24px; border-radius:10px;
      background: rgba(46,160,163,.16);
      border: 1px solid rgba(46,160,163,.25);
      display:grid; place-items:center;
      flex:0 0 auto;
      margin-top:1px;
    }
    .check .ic svg{width:14px; height:14px; color: var(--brand2);}
    .check span{
      font-size:13px;
      color: var(--muted);
      line-height:1.5;
    }

    .content{
      padding-top: 12px;
      padding-bottom: 6px;
    }
    .grid-2{
      display:grid;
      grid-template-columns: 1fr 0.86fr;
      gap: 14px;
      align-items:start;
      margin-top: 16px;
    }

    .panel{
      border-radius: var(--radius);
      background: rgba(255,255,255,.62);
      border: 1px solid rgba(214,230,230,.95);
      box-shadow: 0 14px 30px rgba(10,40,40,.08);
      overflow:hidden;
    }
    .panel .panel-inner{
      padding: 16px 16px;
    }
    .panel h2{
      margin:0 0 10px;
      font-size: 16px;
      letter-spacing:.2px;
    }
    .panel p{
      margin:0;
      color: var(--muted);
      line-height:1.85;
      font-size: 14px;
    }

    .toc{
      display:grid; gap:10px;
    }
    .toc a{
      display:flex; align-items:center; justify-content:space-between;
      gap:12px;
      padding: 12px 12px;
      border-radius: 14px;
      border: 1px solid rgba(214,230,230,.86);
      background: rgba(255,255,255,.62);
      transition: transform .15s ease, background .2s ease;
      text-decoration:none;
    }
    .toc a:hover{transform: translateY(-1px); background:#fff;}
    .toc .label{
      font-weight:800;
      font-size:13px;
      color: var(--brand2);
      line-height:1.2;
    }
    .toc .arrow{
      width:28px; height:28px; border-radius: 12px;
      border: 1px solid rgba(27,124,122,.22);
      background: rgba(46,160,163,.12);
      display:grid; place-items:center;
      flex: 0 0 auto;
    }
    .toc .arrow svg{width:14px; height:14px; color: var(--brand2);}

    article{
      padding: 18px 0 0;
    }
    .section{
      margin-bottom: 14px;
      border-radius: var(--radius);
      border: 1px solid rgba(214,230,230,.95);
      background: rgba(255,255,255,.60);
      box-shadow: 0 14px 30px rgba(10,40,40,.07);
      overflow:hidden;
    }
    .section .section-inner{padding: 16px 16px;}
    .section h2{
      margin:0 0 10px;
      font-size: 16.5px;
      letter-spacing:.2px;
    }
    .section h3{
      margin: 12px 0 8px;
      font-size: 14.5px;
      letter-spacing:.2px;
    }
    .section p{
      margin:0;
      color: var(--muted);
      line-height:1.85;
      font-size:14px;
    }

    .compare{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:12px;
      margin-top: 12px;
    }
    .compare .cardish{
      border-radius: 16px;
      background: rgba(255,255,255,.66);
      border: 1px solid rgba(214,230,230,.9);
      padding: 12px 12px;
      transition: transform .15s ease, background .2s ease;
    }
    .compare .cardish:hover{transform: translateY(-2px); background: #fff;}
    .cardish .tag{
      display:inline-flex; align-items:center; gap:8px;
      font-size:12px; font-weight:900;
      color: var(--brand2);
      background: rgba(46,160,163,.14);
      border: 1px solid rgba(46,160,163,.22);
      padding: 6px 10px;
      border-radius:999px;
      margin-bottom:10px;
    }
    .cardish ul{
      margin:0; padding-left: 18px;
      color: var(--muted);
      font-size: 13.5px;
      line-height:1.8;
    }

    .steps{
      display:grid;
      gap:10px;
      margin-top: 10px;
    }
    .step{
      display:flex; gap:12px; align-items:flex-start;
      padding: 12px 12px;
      border-radius: 16px;
      border: 1px solid rgba(214,230,230,.88);
      background: rgba(255,255,255,.64);
      transition: transform .15s ease, background .2s ease;
    }
    .step:hover{transform: translateY(-1px); background:#fff;}
    .step .num{
      width:32px; height:32px; border-radius: 14px;
      background: rgba(46,160,163,.14);
      border: 1px solid rgba(46,160,163,.22);
      color: var(--brand2);
      display:grid; place-items:center;
      font-weight:900;
      flex:0 0 auto;
    }
    .step .body{flex:1}
    .step .body strong{
      display:block;
      font-size: 14px;
      margin-bottom: 4px;
    }
    .step .body span{
      color: var(--muted);
      font-size: 13.5px;
      line-height:1.8;
      display:block;
    }

    .tableish{
      display:grid;
      grid-template-columns: 1fr;
      gap: 10px;
      margin-top: 10px;
    }
    .policy-row{
      display:grid;
      grid-template-columns: 1fr;
      gap:10px;
      padding: 12px 12px;
      border-radius: 16px;
      border: 1px solid rgba(214,230,230,.88);
      background: rgba(255,255,255,.64);
    }
    .policy-row .top{
      display:flex; gap:12px; align-items:flex-start; justify-content:space-between;
      flex-wrap:wrap;
    }
    .policy-row strong{
      font-size: 14px;
      letter-spacing:.2px;
    }
    .policy-row .time{
      font-size: 12px;
      font-weight:900;
      color: #0f5f60;
      background: rgba(46,160,163,.14);
      border: 1px solid rgba(46,160,163,.22);
      padding: 6px 10px;
      border-radius: 999px;
      white-space:nowrap;
    }
    .policy-row p{
      color: var(--muted);
      margin:0;
      font-size: 13.5px;
      line-height:1.8;
    }

    .faq{
      margin-top: 10px;
      display:grid;
      gap:10px;
    }
    details.faq-item{
      border-radius: 16px;
      border: 1px solid rgba(214,230,230,.88);
      background: rgba(255,255,255,.64);
      padding: 0 12px;
      transition: background .2s ease;
    }
    details.faq-item[open]{ background:#fff; }
    details.faq-item summary{
      cursor:pointer;
      list-style:none;
      padding: 12px 0;
      display:flex; align-items:flex-start; justify-content:space-between; gap:12px;
      font-weight:900;
      color: var(--brand2);
      font-size: 14px;
      outline:none;
    }
    details.faq-item summary::-webkit-details-marker{display:none}
    .summary-icon{
      width:28px; height:28px;
      border-radius: 12px;
      border: 1px solid rgba(27,124,122,.22);
      background: rgba(46,160,163,.12);
      display:grid; place-items:center; flex:0 0 auto;
      transition: transform .2s ease;
      margin-top:2px;
    }
    details[open] .summary-icon{ transform: rotate(45deg); }
    .faq-answer{
      padding: 0 0 12px;
      color: var(--muted);
      font-size: 13.8px;
      line-height:1.85;
    }

    .inline-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top: 10px;
      padding-top: 8px;
      border-top: 1px dashed rgba(214,230,230,.95);
    }
    .chiplink{
      display:inline-flex; align-items:center; gap:8px;
      padding: 10px 12px;
      border-radius: 999px;
      background: rgba(255,255,255,.66);
      border: 1px solid rgba(214,230,230,.88);
      color: var(--brand2);
      font-weight:800;
      font-size: 13px;
      transition: transform .15s ease, background .2s ease;
    }
    .chiplink:hover{ transform: translateY(-1px); background:#fff; text-decoration:none; }
    .chiplink .mini{
      width:9px; height:9px; border-radius:50%;
      background: rgba(46,160,163,.95);
      box-shadow: 0 0 0 4px rgba(46,160,163,.18);
    }

    .media{
      margin-top: 14px;
      border-radius: var(--radius);
      border: 1px solid rgba(214,230,230,.95);
      background: rgba(255,255,255,.62);
      box-shadow: 0 14px 30px rgba(10,40,40,.07);
      overflow:hidden;
    }
    .media-inner{
      padding: 14px 14px 16px;
    }
    .media-top{
      display:flex; align-items:flex-start; justify-content:space-between; gap:12px; flex-wrap:wrap;
      margin-bottom: 12px;
    }
    .media-top strong{
      font-size: 15px;
      letter-spacing:.2px;
    }
    .media-top span{
      color: var(--muted);
      font-size: 13.5px;
      line-height:1.6;
      max-width: 62ch;
    }
    .img-wrap{
      border-radius: 16px;
      border: 1px solid rgba(214,230,230,.88);
      background: rgba(255,255,255,.66);
      overflow:hidden;
    }
    .img-wrap img{
      width:100%;
      max-width: 100%;
      display:block;
      height:auto;
      object-fit:contain;
    }
    .img-caption{
      margin-top: 10px;
      color: var(--muted);
      font-size: 13.5px;
      line-height:1.8;
    }

    .contact-brief{
      display:grid;
      gap:10px;
      margin-top: 10px;
    }
    .contact-row{
      display:flex; align-items:flex-start; gap:12px;
      padding: 12px 12px;
      border-radius: 16px;
      border: 1px solid rgba(214,230,230,.88);
      background: rgba(255,255,255,.64);
    }
    .contact-row .ico{
      width:34px; height:34px;
      border-radius: 14px;
      background: rgba(46,160,163,.14);
      border: 1px solid rgba(46,160,163,.22);
      display:grid; place-items:center;
      flex:0 0 auto;
    }
    .contact-row .ico svg{width:16px; height:16px; color: var(--brand2);}
    .contact-row strong{
      display:block;
      font-size: 14px;
      margin-bottom: 4px;
    }
    .contact-row span{
      color: var(--muted);
      font-size: 13.5px;
      line-height:1.8;
    }

    .qrcode-row{
      display:grid;
      grid-template-columns: 1fr;
      gap: 10px;
      margin-top: 12px;
    }
    .qr-block{
      border-radius: 16px;
      border: 1px solid rgba(214,230,230,.88);
      background: rgba(255,255,255,.64);
      padding: 12px 12px;
    }
    .qr-block .row{
      display:flex; gap:12px; align-items:center; justify-content:space-between; flex-wrap:wrap;
      margin-bottom: 10px;
    }
    .qr-block .row strong{
      font-size: 14px;
      letter-spacing:.2px;
    }
    .qr-block .row a{
      font-weight:900;
      font-size: 13px;
      color: var(--brand2);
      background: rgba(46,160,163,.12);
      border: 1px solid rgba(46,160,163,.22);
      padding: 8px 10px;
      border-radius: 12px;
      text-decoration:none;
      transition: transform .15s ease, background .2s ease;
    }
    .qr-block .row a:hover{transform: translateY(-1px); background:#fff;}
    .qr-img{
      width: 100%;
      max-width: 220px;
      border-radius: 14px;
      border: 1px solid rgba(214,230,230,.9);
      background: rgba(255,255,255,.72);
      display:block;
    }

    footer.site-footer{
      margin-top: 10px;
      border-top: 1px solid rgba(214,230,230,.85);
      background: linear-gradient(180deg, rgba(255,255,255,.45), rgba(255,255,255,.65));
    }
    .footer-inner{
      padding: 18px 0 24px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      align-items:start;
    }
    .foot-card{
      border-radius: var(--radius);
      border: 1px solid rgba(214,230,230,.9);
      background: rgba(255,255,255,.62);
      padding: 14px 14px;
    }
    .foot-card strong{font-size: 14.5px;}
    .foot-card p{
      margin:8px 0 0;
      color: var(--muted);
      font-size: 13.5px;
      line-height:1.85;
    }
    .copyright{
      margin-top: 14px;
      color: var(--muted);
      font-size: 12.5px;
      line-height:1.7;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      flex-wrap:wrap;
    }
    .to-top{
      display:inline-flex; align-items:center; gap:10px;
      padding: 10px 12px;
      border-radius: 14px;
      border: 1px solid rgba(27,124,122,.22);
      background: rgba(255,255,255,.64);
      color: var(--brand2);
      font-weight:900;
      font-size: 13px;
      cursor:pointer;
      transition: transform .15s ease, background .2s ease;
    }
    .to-top:hover{transform: translateY(-1px); background:#fff; text-decoration:none;}
    .to-top:focus{outline:none; box-shadow: var(--focus);}
    .to-top svg{width:14px; height:14px;}

    @media (max-width: 900px){
      .hero-top{grid-template-columns: 1fr; }
      .grid-2{grid-template-columns: 1fr; }
      .compare{grid-template-columns: 1fr;}
      .footer-grid{grid-template-columns: 1fr;}
      .hero-inner{padding: 22px 14px 16px;}
      .quick-card{animation: none;}
      nav.desktop-nav{display:none;}
      .mobile-nav{display:flex;}
      .menu-panel{display:none;}
      .menu-panel.open{display:block;}
    }
    @media (max-width: 380px){
      .brand-title span{display:none;}
      .btn{padding: 10px 12px;}
    }

    @media (prefers-reduced-motion: reduce){
      *{scroll-behavior:auto !important}
      .quick-card{animation:none !important}
    }