:root{
      --bg0:#ffffff;
      --bg1:#fbfaf7;
      --card:#ffffffcc;
      --cardSolid:#ffffff;
      --text:#1f2430;
      --muted:#5b6476;
      --line:rgba(19,25,40,.10);
      --shadow:0 10px 30px rgba(10,18,33,.10);
      --shadow2:0 14px 50px rgba(10,18,33,.12);
      --brand1:#6a5cff;
      --brand2:#00c2ff;
      --brand3:#ff3ea5;
      --brand4:#22c55e;
      --focus: rgba(0,194,255,.22);
      --radius:18px;
      --radius2:24px;
      --container:1120px;
    }
    *{box-sizing:border-box}
    html,body{height:100%}
    body{
      margin:0;
      font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "PingFang SC","Hiragino Sans GB","Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
      background:
        radial-gradient(900px 420px at 10% 0%, rgba(106,92,255,.16), transparent 60%),
        radial-gradient(850px 420px at 92% 10%, rgba(0,194,255,.16), transparent 55%),
        radial-gradient(650px 360px at 30% 35%, rgba(255,62,165,.10), transparent 55%),
        linear-gradient(180deg, var(--bg1), var(--bg0));
      color:var(--text);
    }
    a{color:inherit}
    .container{
      width:100%;
      max-width:var(--container);
      margin:0 auto;
      padding:0 20px;
    }

    /* Header */
    header{
      position:sticky;
      top:0;
      z-index:40;
      backdrop-filter: blur(10px);
      background: rgba(255,255,255,.72);
      border-bottom:1px solid var(--line);
    }
    .header-inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:12px 0;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:10px;
      min-width:120px;
    }
    .logo{
      width:40px;height:40px;
      border-radius:14px;
      background:
        linear-gradient(135deg, rgba(106,92,255,.95), rgba(0,194,255,.92) 45%, rgba(255,62,165,.88));
      box-shadow: 0 10px 24px rgba(106,92,255,.20);
      position:relative;
      overflow:hidden;
      flex:0 0 auto;
    }
    .logo:before{
      content:"";
      position:absolute; inset:-30%;
      background: conic-gradient(from 160deg, rgba(255,255,255,.0), rgba(255,255,255,.55), rgba(255,255,255,.0));
      transform: rotate(0deg);
      animation: sheen 5.6s linear infinite;
      opacity:.75;
    }
    .logo span{
      position:absolute; inset:0;
      display:flex; align-items:center; justify-content:center;
      font-weight:900;
      color:#0b1222;
      letter-spacing:.5px;
      text-shadow: 0 1px 0 rgba(255,255,255,.45);
    }
    @keyframes sheen{
      0%{transform: translateX(-35%) rotate(0deg)}
      100%{transform: translateX(35%) rotate(360deg)}
    }

    .brand-text{
      display:flex; flex-direction:column; line-height:1.1;
    }
    .brand-text strong{
      font-size:14px;
      letter-spacing:.2px;
    }
    .brand-text em{
      font-style:normal;
      color:var(--muted);
      font-size:12px;
      margin-top:2px;
    }

    nav{
      display:flex;
      align-items:center;
      gap:8px;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:6px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .nav-links a{
      text-decoration:none;
      padding:8px 10px;
      border-radius:12px;
      border:1px solid transparent;
      color:rgba(31,36,48,.92);
      font-size:13px;
      transition: transform .15s ease, background .15s ease, border-color .15s ease;
      white-space:nowrap;
    }
    .nav-links a:hover{
      transform: translateY(-1px);
      background: rgba(0,194,255,.08);
      border-color: rgba(0,194,255,.22);
    }

    .header-cta{
      display:flex; align-items:center; gap:10px;
    }
    .btn{
      appearance:none;
      border:1px solid rgba(17,24,39,.14);
      background: rgba(255,255,255,.72);
      color:rgba(31,36,48,.96);
      padding:10px 12px;
      border-radius:14px;
      font-weight:650;
      font-size:13px;
      text-decoration:none;
      display:inline-flex;
      align-items:center;
      gap:8px;
      transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease, background .15s ease;
      box-shadow: 0 8px 18px rgba(10,18,33,.06);
      white-space:nowrap;
    }
    .btn:hover{
      transform: translateY(-1px);
      box-shadow: 0 14px 30px rgba(10,18,33,.10);
      border-color: rgba(0,194,255,.35);
      background: rgba(255,255,255,.86);
    }
    .btn-primary{
      border-color: rgba(106,92,255,.35);
      background: linear-gradient(135deg, rgba(106,92,255,.18), rgba(0,194,255,.14), rgba(255,62,165,.10));
    }
    .btn-primary .dot{
      width:10px;height:10px;border-radius:50%;
      background: linear-gradient(135deg, var(--brand1), var(--brand2), var(--brand3));
      box-shadow: 0 0 0 4px rgba(0,194,255,.14);
    }

    .menu-toggle{
      display:none;
      width:44px;height:44px;
      border-radius:14px;
      border:1px solid rgba(17,24,39,.14);
      background: rgba(255,255,255,.72);
      box-shadow: 0 8px 18px rgba(10,18,33,.06);
      align-items:center; justify-content:center;
      cursor:pointer;
      transition: transform .15s ease, border-color .15s ease;
    }
    .menu-toggle:hover{transform: translateY(-1px); border-color: rgba(0,194,255,.35);}
    .hamburger{
      width:18px;height:14px; position:relative;
    }
    .hamburger i{
      position:absolute; left:0; right:0;
      height:2px; border-radius:2px;
      background: rgba(31,36,48,.92);
      transition: transform .18s ease, top .18s ease, opacity .18s ease;
    }
    .hamburger i:nth-child(1){top:0}
    .hamburger i:nth-child(2){top:6px}
    .hamburger i:nth-child(3){top:12px}
    .menu-open .hamburger i:nth-child(1){top:6px; transform: rotate(45deg)}
    .menu-open .hamburger i:nth-child(2){opacity:0}
    .menu-open .hamburger i:nth-child(3){top:6px; transform: rotate(-45deg)}

    .mobile-panel{
      display:none;
      border-top:1px solid var(--line);
      padding:10px 0 14px;
    }
    .mobile-panel .nav-links{
      justify-content:flex-start;
      gap:10px;
    }

    /* Hero */
    .hero{
      padding:26px 0 14px;
    }
    .hero-grid{
      display:grid;
      grid-template-columns: 1.2fr .8fr;
      gap:18px;
      align-items:stretch;
    }
    .hero-card{
      border:1px solid rgba(19,25,40,.10);
      background: linear-gradient(180deg, rgba(255,255,255,.74), rgba(255,255,255,.56));
      border-radius: var(--radius2);
      box-shadow: var(--shadow);
      overflow:hidden;
      position:relative;
      padding:26px 22px;
      min-height: 260px;
    }
    .hero-card:before{
      content:"";
      position:absolute; inset:-2px;
      background:
        radial-gradient(520px 220px at 16% 18%, rgba(106,92,255,.22), transparent 60%),
        radial-gradient(520px 220px at 85% 20%, rgba(0,194,255,.20), transparent 60%),
        radial-gradient(520px 260px at 50% 90%, rgba(255,62,165,.14), transparent 60%);
      pointer-events:none;
    }
    .hero-inner{
      position:relative;
      display:flex;
      flex-direction:column;
      gap:14px;
    }
    .badge-row{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      align-items:center;
    }
    .badge{
      display:inline-flex; align-items:center; gap:8px;
      padding:8px 10px;
      border-radius:999px;
      background: rgba(255,255,255,.70);
      border:1px solid rgba(17,24,39,.10);
      color: rgba(31,36,48,.92);
      font-size:13px;
      box-shadow: 0 10px 26px rgba(10,18,33,.06);
    }
    .badge .spark{
      width:16px;height:16px;border-radius:6px;
      background: linear-gradient(135deg, rgba(106,92,255,.9), rgba(0,194,255,.9));
      box-shadow: 0 0 0 4px rgba(0,194,255,.14);
      display:inline-block;
    }

    h1{
      margin:0;
      font-size:28px;
      letter-spacing:-.6px;
      line-height:1.2;
    }
    .hero-lead{
      margin:0;
      color: var(--muted);
      font-size:15px;
      line-height:1.7;
      max-width: 62ch;
    }
    .hero-actions{
      display:flex; gap:10px; flex-wrap:wrap; align-items:center;
      margin-top:4px;
    }
    .mini-link{
      text-decoration:none;
      padding:10px 12px;
      border-radius:14px;
      border:1px dashed rgba(31,36,48,.18);
      background: rgba(255,255,255,.45);
      color: rgba(31,36,48,.92);
      font-weight:650;
      font-size:13px;
      transition: transform .15s ease, border-color .15s ease, background .15s ease;
      display:inline-flex;
      align-items:center;
      gap:8px;
    }
    .mini-link:hover{
      transform: translateY(-1px);
      border-color: rgba(0,194,255,.38);
      background: rgba(255,255,255,.75);
    }
    .arrow{
      width:22px;height:22px;
      border-radius:8px;
      background: rgba(0,194,255,.10);
      border:1px solid rgba(0,194,255,.22);
      display:inline-flex; align-items:center; justify-content:center;
      font-size:13px;
    }

    .side-card{
      border:1px solid rgba(19,25,40,.10);
      background: linear-gradient(180deg, rgba(255,255,255,.68), rgba(255,255,255,.52));
      border-radius: var(--radius2);
      box-shadow: var(--shadow);
      padding:18px 16px;
      display:flex;
      flex-direction:column;
      gap:14px;
      min-height: 260px;
      position:relative;
      overflow:hidden;
    }
    .side-card:after{
      content:"";
      position:absolute;
      width:260px;height:260px;
      right:-120px; top:-140px;
      background: conic-gradient(from 210deg, rgba(106,92,255,.22), rgba(0,194,255,.18), rgba(255,62,165,.18), rgba(106,92,255,.22));
      filter: blur(0px);
      opacity:.55;
      border-radius:50%;
      pointer-events:none;
    }
    .side-top{
      position:relative;
      display:flex; align-items:flex-start; justify-content:space-between; gap:12px;
    }
    .side-top h2{
      margin:0;
      font-size:15px;
      letter-spacing:-.2px;
    }
    .side-top p{
      margin:6px 0 0;
      color:var(--muted);
      font-size:13px;
      line-height:1.6;
      position:relative;
    }
    .kv{
      position:relative;
      display:grid;
      grid-template-columns: 1fr;
      gap:10px;
    }
    .kv-item{
      display:flex; gap:10px; align-items:flex-start;
      padding:12px 12px;
      border-radius:16px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.62);
      transition: transform .15s ease, border-color .15s ease;
    }
    .kv-item:hover{
      transform: translateY(-2px);
      border-color: rgba(0,194,255,.32);
    }
    .kv-ic{
      width:36px;height:36px;border-radius:14px;
      background: linear-gradient(135deg, rgba(106,92,255,.18), rgba(0,194,255,.14), rgba(255,62,165,.12));
      border:1px solid rgba(106,92,255,.22);
      display:flex; align-items:center; justify-content:center;
      flex:0 0 auto;
      font-size:16px;
    }
    .kv-item strong{
      display:block;
      font-size:13px;
      margin-top:2px;
    }
    .kv-item span{
      display:block;
      font-size:12px;
      color:var(--muted);
      margin-top:3px;
      line-height:1.45;
    }

    /* Main layout */
    main{padding:12px 0 26px;}
    .content-grid{
      display:grid;
      grid-template-columns: 1fr;
      gap:14px;
    }

    .section{
      border:1px solid rgba(19,25,40,.10);
      background: rgba(255,255,255,.58);
      border-radius: var(--radius2);
      box-shadow: 0 10px 28px rgba(10,18,33,.06);
      overflow:hidden;
    }
    .section-inner{
      padding:18px 18px;
    }

    /* Article */
    .article-wrap{
      display:grid;
      grid-template-columns: 1fr;
      gap:12px;
    }
    .toc{
      padding:14px 16px;
      border-radius:18px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.70);
    }
    .toc h2{
      margin:0 0 10px;
      font-size:14px;
      letter-spacing:-.2px;
    }
    .toc a{
      text-decoration:none;
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:9px 10px;
      border-radius:14px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.55);
      font-size:13px;
      color: rgba(31,36,48,.92);
      margin:0 10px 10px 0;
      transition: transform .15s ease, border-color .15s ease, background .15s ease;
      white-space:nowrap;
    }
    .toc a:hover{
      transform: translateY(-1px);
      border-color: rgba(0,194,255,.35);
      background: rgba(255,255,255,.85);
    }
    .toc .tag{
      width:22px;height:22px;border-radius:9px;
      border:1px solid rgba(0,194,255,.28);
      background: rgba(0,194,255,.10);
      display:inline-flex;align-items:center;justify-content:center;
      font-weight:850;
      font-size:12px;
      color: rgba(0,94,128,.95);
    }

    .prose{
      padding:2px 2px 0;
    }
    h2.sec-title{
      margin:6px 0 10px;
      font-size:18px;
      letter-spacing:-.4px;
    }
    .lead-card{
      border-radius:18px;
      padding:14px 16px;
      border:1px solid rgba(17,24,39,.10);
      background: linear-gradient(180deg, rgba(255,255,255,.72), rgba(255,255,255,.56));
      margin-top:10px;
    }
    .lead-card p{
      margin:0;
      color:var(--muted);
      line-height:1.8;
      font-size:14px;
    }

    .step-grid{
      display:grid;
      grid-template-columns: repeat(12, 1fr);
      gap:12px;
      align-items:start;
    }
    .col-7{grid-column: span 7;}
    .col-5{grid-column: span 5;}
    .card{
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.70);
      border-radius:18px;
      padding:14px 14px;
      transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
      box-shadow: 0 10px 26px rgba(10,18,33,.05);
    }
    .card:hover{
      transform: translateY(-2px);
      border-color: rgba(0,194,255,.32);
      box-shadow: 0 18px 42px rgba(10,18,33,.10);
    }
    .card h3{
      margin:0 0 8px;
      font-size:15px;
      letter-spacing:-.2px;
    }
    .card ul{
      margin:0;
      padding:0;
      list-style:none;
      display:flex; flex-direction:column; gap:10px;
    }
    .li{
      display:flex; gap:10px; align-items:flex-start;
      padding:10px 10px;
      border-radius:16px;
      border:1px solid rgba(17,24,39,.08);
      background: rgba(255,255,255,.55);
    }
    .num{
      width:28px;height:28px;border-radius:12px;
      background: rgba(106,92,255,.12);
      border:1px solid rgba(106,92,255,.22);
      display:flex; align-items:center; justify-content:center;
      font-weight:900;
      font-size:12px;
      color: rgba(62,54,170,.98);
      flex:0 0 auto;
    }
    .li div strong{
      display:block;
      font-size:13px;
      margin-top:2px;
    }
    .li div span{
      display:block;
      font-size:12px;
      color:var(--muted);
      line-height:1.5;
      margin-top:3px;
    }

    .tips{
      display:grid;
      grid-template-columns: 1fr;
      gap:12px;
    }
    .tip-block{
      border-radius:18px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.70);
      padding:14px 14px;
    }
    .tip-block h3{
      margin:0 0 8px; font-size:15px;
    }
    .checklist{
      margin:0;
      padding:0;
      list-style:none;
      display:grid; gap:10px;
    }
    .check{
      display:flex; gap:10px; align-items:flex-start;
      padding:10px 10px;
      border-radius:16px;
      border:1px solid rgba(17,24,39,.08);
      background: rgba(255,255,255,.55);
    }
    .tick{
      width:22px;height:22px;border-radius:9px;
      background: rgba(34,197,94,.12);
      border:1px solid rgba(34,197,94,.26);
      display:flex; align-items:center; justify-content:center;
      color: rgba(15,120,52,.95);
      flex:0 0 auto;
      font-weight:900;
      font-size:12px;
      margin-top:1px;
    }
    .check strong{
      display:block;
      font-size:13px;
    }
    .check span{
      display:block;
      font-size:12px;
      color:var(--muted);
      line-height:1.55;
      margin-top:3px;
    }

    .case{
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .case-top{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:12px;
    }
    .case h3{margin:0; font-size:15px;}
    .pill{
      padding:7px 10px;
      border-radius:999px;
      border:1px solid rgba(0,194,255,.26);
      background: rgba(0,194,255,.10);
      color: rgba(0,94,128,.95);
      font-size:12px;
      font-weight:750;
      white-space:nowrap;
    }
    .case p{
      margin:0;
      color:var(--muted);
      line-height:1.8;
      font-size:14px;
    }
    .case-steps{
      display:grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap:10px;
      margin-top:2px;
    }
    .mini-card{
      border-radius:16px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.62);
      padding:12px 12px;
    }
    .mini-card strong{
      display:block;
      font-size:13px;
      margin-bottom:6px;
    }
    .mini-card span{
      display:block;
      font-size:12px;
      color:var(--muted);
      line-height:1.55;
    }

    /* FAQ */
    .faq-grid{
      display:grid;
      grid-template-columns: 1fr;
      gap:12px;
    }
    .faq-item{
      border-radius:18px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.72);
      padding:0;
      overflow:hidden;
    }
    details.faq{
      padding:0 14px;
      background: transparent;
    }
    details.faq summary{
      list-style:none;
      cursor:pointer;
      padding:14px 0;
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:14px;
      font-weight:800;
      font-size:14px;
    }
    details.faq summary::-webkit-details-marker{display:none}
    .chev{
      width:28px;height:28px;border-radius:12px;
      border:1px solid rgba(17,24,39,.12);
      background: rgba(255,255,255,.55);
      display:flex; align-items:center; justify-content:center;
      flex:0 0 auto;
      margin-top:2px;
      transition: transform .18s ease;
    }
    details[open].faq .chev{transform: rotate(180deg)}
    .faq-body{
      padding:0 0 14px;
      color:var(--muted);
      font-size:14px;
      line-height:1.85;
      border-top:1px solid rgba(17,24,39,.08);
    }
    .faq-body p{margin:12px 0 0}

    /* Image gallery */
    .img-grid{
      display:grid;
      grid-template-columns: repeat(12,1fr);
      gap:12px;
      align-items:stretch;
    }
    .img-main{grid-column: span 7;}
    .img-side{grid-column: span 5;}
    .img-box{
      border-radius:22px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.64);
      box-shadow: 0 12px 34px rgba(10,18,33,.07);
      overflow:hidden;
      position:relative;
      padding:12px;
    }
    .img-frame{
      border-radius:18px;
      border:1px solid rgba(17,24,39,.08);
      overflow:hidden;
      background: rgba(255,255,255,.7);
    }
    .img-frame img{
      width:100%;
      height:auto;
      display:block;
      object-fit:contain;
      transform: translateZ(0);
    }
    .img-caption{
      padding:10px 6px 2px;
      color:var(--muted);
      font-size:13px;
      line-height:1.6;
      display:flex;
      align-items:flex-start;
      gap:10px;
    }
    .img-caption .mark{
      width:28px;height:28px;border-radius:12px;
      background: rgba(255,62,165,.10);
      border:1px solid rgba(255,62,165,.22);
      display:flex; align-items:center; justify-content:center;
      font-weight:900;
      color: rgba(151, 26, 89, .95);
      flex:0 0 auto;
      margin-top:2px;
    }

    /* Footer */
    footer{
      margin-top:14px;
      background: rgba(255,255,255,.72);
      border-top:1px solid var(--line);
      padding:18px 0 22px;
    }
    .footer-inner{
      display:grid;
      grid-template-columns: 1.2fr .8fr;
      gap:14px;
      align-items:start;
    }
    .foot-card{
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.70);
      border-radius:22px;
      padding:16px 16px;
      box-shadow: 0 12px 34px rgba(10,18,33,.06);
    }
    .foot-title{
      margin:0 0 10px;
      font-size:15px;
      letter-spacing:-.2px;
    }
    .foot-list{
      margin:0;
      padding:0;
      list-style:none;
      display:flex; flex-direction:column; gap:10px;
    }
    .foot-list li{
      display:flex; gap:10px; align-items:flex-start;
      color: var(--muted);
      font-size:13px;
      line-height:1.6;
    }
    .loc-ic{
      width:28px;height:28px;border-radius:12px;
      background: rgba(0,194,255,.10);
      border:1px solid rgba(0,194,255,.22);
      display:flex; align-items:center; justify-content:center;
      color: rgba(0,94,128,.95);
      flex:0 0 auto;
      margin-top:1px;
      font-weight:900;
    }
    .foot-links{
      display:flex; flex-wrap:wrap; gap:10px;
      margin-top:8px;
    }
    .foot-links a{
      text-decoration:none;
      padding:10px 12px;
      border-radius:14px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.58);
      color: rgba(31,36,48,.92);
      font-size:13px;
      font-weight:700;
      transition: transform .15s ease, border-color .15s ease, background .15s ease;
      white-space:nowrap;
    }
    .foot-links a:hover{
      transform: translateY(-1px);
      border-color: rgba(106,92,255,.32);
      background: rgba(255,255,255,.88);
    }
    .copyright{
      margin-top:12px;
      color: var(--muted);
      font-size:12px;
      line-height:1.6;
      text-align:center;
    }

    /* Animations */
    .reveal{
      opacity:0;
      transform: translateY(10px);
      transition: opacity .5s ease, transform .5s ease;
      will-change: transform, opacity;
    }
    .reveal.in{
      opacity:1;
      transform: translateY(0);
    }
    .focus-ring:focus{
      outline: none;
      box-shadow: 0 0 0 4px var(--focus);
    }

    /* Responsiveness */
    @media (max-width: 920px){
      .hero-grid{grid-template-columns: 1fr; }
      .img-main, .img-side{grid-column: span 12;}
      .footer-inner{grid-template-columns: 1fr;}
      .step-grid{grid-template-columns: 1fr;}
      .col-7, .col-5{grid-column: auto;}
      .case-steps{grid-template-columns: 1fr;}
      .nav-links{display:none;}
      .menu-toggle{display:flex;}
      .mobile-panel{display:none;}
      .mobile-panel.show{display:block;}
    }
    @media (prefers-reduced-motion: reduce){
      .logo:before{animation:none}
      .reveal{transition:none}
      .kv-item:hover,.card:hover,.btn:hover,.mini-link:hover,.toc a:hover,.foot-links a:hover{transform:none}
      details[open].faq .chev{transform:none}
    }