:root{
      --bg0:#f7f6f3;
      --bg1:#f1efe9;
      --ink:#1f2330;
      --muted:#5b6476;
      --card:#ffffff;
      --line:rgba(31,35,48,.10);
      --soft:rgba(31,35,48,.06);
      --accent:#2f5f7a;
      --accent2:#3a7a62;
      --accent3:#6a4ea8;
      --shadow: 0 18px 50px rgba(17,24,39,.08);
      --shadow2: 0 10px 26px rgba(17,24,39,.10);
      --radius:18px;
      --radius2:14px;
      --focus: 0 0 0 4px rgba(47,95,122,.18);
      --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, "Noto Sans", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color:var(--ink);
      background:
        radial-gradient(1200px 700px at 20% -10%, rgba(47,95,122,.10), transparent 60%),
        radial-gradient(900px 520px at 95% 0%, rgba(106,78,168,.10), transparent 55%),
        radial-gradient(900px 620px at 30% 110%, rgba(58,122,98,.10), transparent 55%),
        linear-gradient(180deg, var(--bg0), var(--bg1));
      overflow-x:hidden;
    }

    a{color:inherit}
    .container{
      width:100%;
      max-width:var(--container);
      margin:0 auto;
      padding:0 18px;
    }

    /* 顶部导航 */
    .topbar{
      position:sticky;
      top:0;
      z-index:20;
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      background: rgba(247,246,243,.62);
      border-bottom: 1px solid rgba(31,35,48,.08);
    }
    .nav{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:12px 0;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:10px;
      min-width: 140px;
    }
    .logo{
      width:38px;height:38px;
      border-radius:12px;
      display:grid;
      place-items:center;
      background: linear-gradient(180deg, rgba(47,95,122,.14), rgba(47,95,122,.06));
      border: 1px solid rgba(47,95,122,.28);
      box-shadow: 0 10px 24px rgba(47,95,122,.10);
      font-weight:800;
      letter-spacing:.02em;
    }
    .brand-title{
      display:flex;
      flex-direction:column;
      line-height:1.05;
    }
    .brand-title strong{
      font-size:14px;
      letter-spacing:.02em;
    }
    .brand-title span{
      font-size:12px;
      color:var(--muted);
      margin-top:2px;
    }

    .nav-right{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:nowrap;
      justify-content:flex-end;
    }

    .menu{
      display:none;
      gap:16px;
      align-items:center;
    }
    .menu a{
      text-decoration:none;
      font-size:13px;
      color:var(--muted);
      padding:8px 10px;
      border-radius:12px;
      transition: background .2s ease, color .2s ease, transform .2s ease;
      white-space:nowrap;
    }
    .menu a:hover{
      background: rgba(31,35,48,.06);
      color: var(--ink);
      transform: translateY(-1px);
    }

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      padding:11px 14px;
      border-radius:14px;
      border: 1px solid rgba(31,35,48,.12);
      background: rgba(255,255,255,.70);
      color: var(--ink);
      font-weight:650;
      font-size:13px;
      text-decoration:none;
      cursor:pointer;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
      user-select:none;
    }
    .btn:active{transform: translateY(0)}
    .btn:focus-visible{outline:none; box-shadow: var(--focus)}
    .btn-primary{
      border-color: rgba(47,95,122,.28);
      background: linear-gradient(180deg, rgba(47,95,122,.16), rgba(47,95,122,.08));
      box-shadow: 0 14px 34px rgba(47,95,122,.14);
    }
    .btn-primary:hover{
      transform: translateY(-1px);
      background: linear-gradient(180deg, rgba(47,95,122,.20), rgba(47,95,122,.10));
      border-color: rgba(47,95,122,.38);
    }
    .btn-ghost{
      background: rgba(255,255,255,.55);
    }
    .hamburger{
      width:42px;height:42px;
      border-radius:14px;
      border:1px solid rgba(31,35,48,.12);
      background: rgba(255,255,255,.72);
      display:grid;
      place-items:center;
      cursor:pointer;
      transition: transform .2s ease, background .2s ease, border-color .2s ease;
    }
    .hamburger:hover{
      transform: translateY(-1px);
      border-color: rgba(31,35,48,.18);
      background: rgba(255,255,255,.82);
    }
    .hamburger:focus-visible{outline:none; box-shadow: var(--focus)}
    .hamburger svg{display:block}

    .mobile-panel{
      display:block;
      overflow:hidden;
      max-height:0;
      transition: max-height .28s ease;
      border-top: 1px solid rgba(31,35,48,.08);
    }
    .mobile-panel.open{max-height: 340px;}
    .mobile-panel-inner{
      padding:12px 0 14px;
      display:flex;
      flex-direction:column;
      gap:8px;
    }
    .mobile-links{
      display:flex;
      flex-direction:column;
      gap:6px;
    }
    .mobile-links a{
      text-decoration:none;
      font-size:13px;
      color:var(--muted);
      padding:10px 12px;
      border-radius:14px;
      border: 1px solid rgba(31,35,48,.08);
      background: rgba(255,255,255,.60);
      transition: transform .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
    }
    .mobile-links a:active{transform: translateY(0)}
    .mobile-links a:hover{
      transform: translateY(-1px);
      color:var(--ink);
      background: rgba(255,255,255,.78);
      border-color: rgba(31,35,48,.14);
    }

    /* 首屏 */
    .hero{
      padding: 26px 0 18px;
    }
    .hero-grid{
      display:grid;
      grid-template-columns: 1fr;
      gap:14px;
      align-items:stretch;
    }
    .hero-card{
      background: rgba(255,255,255,.70);
      border: 1px solid rgba(31,35,48,.10);
      border-radius: var(--radius);
      box-shadow: 0 16px 40px rgba(17,24,39,.06);
      overflow:hidden;
      position:relative;
    }
    .hero-card::before{
      content:"";
      position:absolute; inset:-2px;
      background:
        radial-gradient(800px 340px at 10% 0%, rgba(47,95,122,.18), transparent 52%),
        radial-gradient(740px 320px at 95% 10%, rgba(106,78,168,.16), transparent 50%),
        radial-gradient(520px 340px at 40% 120%, rgba(58,122,98,.14), transparent 50%);
      pointer-events:none;
      filter: saturate(1.1);
    }
    .hero-inner{
      position:relative;
      padding: 18px 16px 16px;
      display:flex;
      flex-direction:column;
      gap:12px;
    }
    .hero-kicker{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      align-items:center;
    }
    .pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 10px;
      border-radius:999px;
      border: 1px solid rgba(31,35,48,.10);
      background: rgba(255,255,255,.58);
      color: var(--muted);
      font-size:12px;
      line-height:1;
      white-space:nowrap;
    }
    .dot{
      width:8px;height:8px;border-radius:50%;
      background: var(--accent);
      box-shadow: 0 0 0 4px rgba(47,95,122,.14);
    }

    h1{
      margin:0;
      font-size: 22px;
      letter-spacing: -0.02em;
      line-height:1.22;
    }
    .hero-lead{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.7;
      max-width: 72ch;
    }

    .hero-actions{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      align-items:center;
      margin-top:2px;
    }

    .meta-row{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      align-items:center;
      color:var(--muted);
      font-size:12.5px;
    }
    .meta-row span{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 10px;
      border-radius: 14px;
      border:1px solid rgba(31,35,48,.10);
      background: rgba(255,255,255,.56);
    }
    .mini-icon{
      width:18px;height:18px;border-radius:6px;
      display:grid; place-items:center;
      background: rgba(47,95,122,.10);
      border:1px solid rgba(47,95,122,.20);
    }

    /* 目录 */
    .section{
      padding: 10px 0;
    }
    .section-title{
      margin: 18px 0 10px;
      font-size:15px;
      color:var(--ink);
      letter-spacing:.01em;
      display:flex;
      align-items:center;
      gap:10px;
    }
    .section-title::before{
      content:"";
      width:10px;height:10px;border-radius:50%;
      background: linear-gradient(180deg, rgba(47,95,122,.95), rgba(47,95,122,.55));
      box-shadow: 0 0 0 5px rgba(47,95,122,.12);
    }

    .toc{
      background: rgba(255,255,255,.65);
      border:1px solid rgba(31,35,48,.10);
      border-radius: var(--radius2);
      box-shadow: 0 12px 30px rgba(17,24,39,.05);
      padding: 14px 12px;
    }
    .toc-grid{
      display:grid;
      grid-template-columns: 1fr;
      gap:8px;
    }
    .toc a{
      text-decoration:none;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      padding: 12px 12px;
      border-radius: 14px;
      border: 1px solid rgba(31,35,48,.10);
      background: rgba(255,255,255,.60);
      transition: transform .18s ease, background .18s ease, border-color .18s ease;
    }
    .toc a:hover{
      transform: translateY(-1px);
      background: rgba(255,255,255,.80);
      border-color: rgba(31,35,48,.15);
    }
    .toc .left{
      display:flex;
      align-items:center;
      gap:10px;
      min-width: 0;
    }
    .toc .idx{
      width:28px;height:28px;
      border-radius:10px;
      display:grid; place-items:center;
      background: rgba(47,95,122,.10);
      border:1px solid rgba(47,95,122,.22);
      color: var(--accent);
      font-weight:750;
      font-size:12px;
      flex:0 0 auto;
    }
    .toc .label{
      font-size:13px;
      color: var(--ink);
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .toc .arrow{
      color: rgba(31,35,48,.50);
      flex:0 0 auto;
    }

    /* 正文模块：3-5核心正文章节（使用不同组件样式，限制同栏目 <=3种样式） */
    .grid-2{
      display:grid;
      grid-template-columns: 1fr;
      gap:12px;
    }

    .card{
      background: rgba(255,255,255,.72);
      border: 1px solid rgba(31,35,48,.10);
      border-radius: var(--radius2);
      box-shadow: 0 12px 28px rgba(17,24,39,.05);
      overflow:hidden;
      position:relative;
    }
    .card-inner{padding:14px 14px;}
    h2{
      margin:0 0 8px;
      font-size:16px;
      letter-spacing:-0.01em;
      line-height:1.35;
    }
    .p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.75;
    }

    .checklist{
      margin-top:10px;
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .item{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding: 12px 12px;
      border-radius: 14px;
      border:1px solid rgba(31,35,48,.10);
      background: rgba(255,255,255,.58);
      transition: transform .18s ease, background .18s ease, border-color .18s ease;
    }
    .item:hover{
      transform: translateY(-1px);
      background: rgba(255,255,255,.78);
      border-color: rgba(31,35,48,.15);
    }
    .badge{
      width:30px;height:30px;
      border-radius:12px;
      display:grid; place-items:center;
      font-weight:800;
      font-size:12px;
      color: var(--accent);
      background: rgba(47,95,122,.10);
      border:1px solid rgba(47,95,122,.22);
      flex: 0 0 auto;
    }
    .item .t{
      font-weight:750;
      font-size:13.5px;
      margin:0;
      color: var(--ink);
    }
    .item .d{
      margin:5px 0 0;
      color:var(--muted);
      font-size:13px;
      line-height:1.6;
    }

    .steps{
      display:grid;
      grid-template-columns: 1fr;
      gap:10px;
      margin-top:12px;
    }
    .step{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding: 12px 12px;
      border-radius: 14px;
      border:1px solid rgba(31,35,48,.10);
      background: rgba(255,255,255,.58);
    }
    .num{
      width:34px;height:34px;
      border-radius:14px;
      display:grid; place-items:center;
      font-weight:900;
      color: #19313c;
      background: linear-gradient(180deg, rgba(47,95,122,.18), rgba(47,95,122,.07));
      border:1px solid rgba(47,95,122,.26);
      flex:0 0 auto;
    }
    .step h3{
      margin:0;
      font-size:14px;
      line-height:1.35;
    }
    .step p{
      margin:6px 0 0;
      color:var(--muted);
      font-size:13px;
      line-height:1.65;
    }

    /* 真实案例+行业数据 */
    .split{
      display:grid;
      grid-template-columns: 1fr;
      gap:12px;
      align-items:stretch;
    }
    .quote{
      border-left: 3px solid rgba(47,95,122,.35);
      padding-left:12px;
      margin-top:10px;
    }
    .quote p{
      margin:0;
      font-size:13.5px;
      color: var(--muted);
      line-height:1.75;
    }
    .stats{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:10px;
      margin-top:10px;
    }
    .stat{
      padding:12px 12px;
      border-radius:14px;
      border:1px solid rgba(31,35,48,.10);
      background: rgba(255,255,255,.58);
    }
    .stat strong{
      display:block;
      font-size:16px;
      letter-spacing:-.02em;
    }
    .stat span{
      display:block;
      margin-top:6px;
      color:var(--muted);
      font-size:12.5px;
      line-height:1.4;
    }

    /* FAQ */
    .faq{
      background: rgba(255,255,255,.66);
      border:1px solid rgba(31,35,48,.10);
      border-radius: var(--radius);
      box-shadow: 0 14px 32px rgba(17,24,39,.06);
      overflow:hidden;
    }
    .faq-inner{padding: 14px 14px;}
    .faq-list{
      display:flex;
      flex-direction:column;
      gap:10px;
      margin-top:10px;
    }
    details{
      border:1px solid rgba(31,35,48,.10);
      background: rgba(255,255,255,.58);
      border-radius: 14px;
      padding: 12px 12px;
      transition: border-color .18s ease, background .18s ease, transform .18s ease;
    }
    details:hover{
      border-color: rgba(31,35,48,.15);
      background: rgba(255,255,255,.78);
      transform: translateY(-1px);
    }
    summary{
      cursor:pointer;
      list-style:none;
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:12px;
      font-weight:780;
      color: var(--ink);
      font-size:14px;
      line-height:1.4;
    }
    summary::-webkit-details-marker{display:none}
    .chev{
      width:28px;height:28px;border-radius:12px;
      display:grid;place-items:center;
      border:1px solid rgba(31,35,48,.10);
      background: rgba(255,255,255,.58);
      color: rgba(31,35,48,.62);
      flex:0 0 auto;
      transition: transform .2s ease;
    }
    details[open] .chev{transform: rotate(180deg)}
    details p{
      margin:10px 0 0;
      color:var(--muted);
      font-size:13.5px;
      line-height:1.75;
    }

    /* 转化落地：图片/门店/二维码 */
    .shop-grid{
      display:grid;
      grid-template-columns: 1fr;
      gap:12px;
      align-items:stretch;
    }
    .media{
      padding: 12px;
      background: rgba(255,255,255,.60);
      border:1px solid rgba(31,35,48,.10);
      border-radius: var(--radius2);
    }
    .media .imgwrap{
      border-radius: 14px;
      overflow:hidden;
      border:1px solid rgba(31,35,48,.10);
      background: rgba(31,35,48,.04);
    }
    .media img{
      width:100%;
      height:auto;
      display:block;
      object-fit:contain;
      opacity: .98;
    }
    .media .altline{
      margin-top:10px;
      color:var(--muted);
      font-size:12.8px;
      line-height:1.6;
    }

    .shop-card .row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
      margin-top:10px;
    }
    .kv{
      padding: 10px 12px;
      border:1px solid rgba(31,35,48,.10);
      background: rgba(255,255,255,.58);
      border-radius: 14px;
      min-width: 220px;
      flex: 1 1 220px;
    }
    .kv strong{display:block; font-size:13.5px;}
    .kv span{display:block; margin-top:6px; color:var(--muted); font-size:13px; line-height:1.5;}
    .kv a{
      color: var(--accent);
      text-decoration: none;
      border-bottom: 1px dashed rgba(47,95,122,.40);
    }
    .kv a:hover{border-bottom-style: solid}

    .qr-wrap{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      margin-top:12px;
      align-items:flex-start;
    }
    .qr{
      flex: 1 1 190px;
      min-width: 190px;
      padding: 12px 12px;
      border-radius: var(--radius2);
      border:1px solid rgba(31,35,48,.10);
      background: rgba(255,255,255,.58);
    }
    .qr h3{
      margin:0;
      font-size:13.5px;
      letter-spacing:-.01em;
    }
    .qr .q{
      margin-top:10px;
      border-radius: 14px;
      overflow:hidden;
      border:1px solid rgba(31,35,48,.10);
      background: rgba(31,35,48,.03);
    }
    .qr img{
      width:100%;
      height:auto;
      display:block;
      object-fit:contain;
    }
    .qr .qcap{
      margin:10px 0 0;
      color:var(--muted);
      font-size:12.8px;
      line-height:1.6;
    }

    /* 总结+内链锚文本 */
    .conclusion{
      background: rgba(255,255,255,.66);
      border:1px solid rgba(31,35,48,.10);
      border-radius: var(--radius);
      padding: 14px 14px;
      box-shadow: 0 14px 32px rgba(17,24,39,.06);
    }
    .conclusion p{
      margin:8px 0 0;
      color:var(--muted);
      font-size:14px;
      line-height:1.8;
    }
    .conclusion a{
      color: var(--accent);
      text-decoration:none;
      border-bottom: 1px dashed rgba(47,95,122,.40);
    }
    .conclusion a:hover{border-bottom-style: solid}

    /* 底部 */
    footer{
      margin-top: 6px;
      background: rgba(31,35,48,.94);
      color: rgba(255,255,255,.92);
      border-top: 1px solid rgba(255,255,255,.10);
    }
    .footer-inner{
      padding: 18px 0 14px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns: 1fr;
      gap:12px;
      align-items:start;
    }
    .foot-brand{
      display:flex;
      align-items:flex-start;
      gap:12px;
    }
    .foot-logo{
      width:40px;height:40px;border-radius:14px;
      display:grid;place-items:center;
      background: rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.14);
      font-weight:900;
    }
    .foot-text strong{display:block; font-size:14.5px;}
    .foot-text span{display:block; margin-top:6px; color: rgba(255,255,255,.72); font-size:13px; line-height:1.6;}
    .foot-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
    }
    .foot-links a{
      color: rgba(255,255,255,.86);
      text-decoration:none;
      border:1px solid rgba(255,255,255,.14);
      background: rgba(255,255,255,.06);
      padding:10px 12px;
      border-radius: 14px;
      font-size:13px;
      transition: transform .2s ease, background .2s ease, border-color .2s ease;
      white-space:nowrap;
    }
    .foot-links a:hover{
      transform: translateY(-1px);
      background: rgba(255,255,255,.10);
      border-color: rgba(255,255,255,.22);
    }
    .copyright{
      margin-top: 12px;
      padding-top:12px;
      border-top: 1px solid rgba(255,255,255,.12);
      color: rgba(255,255,255,.68);
      font-size:12.5px;
      line-height:1.7;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
      justify-content:space-between;
    }

    /* 动效 */
    .reveal{
      opacity:0;
      transform: translateY(10px);
      transition: opacity .6s ease, transform .6s ease;
    }
    .reveal.in{
      opacity:1;
      transform: translateY(0);
    }
    .floaty{
      animation: floaty 7s ease-in-out infinite;
      transform-origin: center;
    }
    @keyframes floaty{
      0%,100%{transform: translateY(0)}
      50%{transform: translateY(-3px)}
    }

    /* 响应式 */
    @media (min-width: 880px){
      .menu{display:flex;}
      .hamburger{display:none;}
      .hero-grid{
        grid-template-columns: 1.15fr .85fr;
        gap:14px;
      }
      .hero-inner{padding: 20px 20px 18px;}
      h1{font-size: 28px;}
      .hero-lead{font-size:14.5px;}
      .toc-grid{grid-template-columns: 1fr 1fr;}
      .grid-2{grid-template-columns: 1fr 1fr;}
      .split{grid-template-columns: 1.1fr .9fr;}
      .steps{grid-template-columns: 1fr 1fr;}
      .shop-grid{grid-template-columns: 1fr 1fr;}
      .footer-grid{grid-template-columns: 1.2fr .8fr;}
    }

    @media (prefers-reduced-motion: reduce){
      .reveal{transition:none}
      .floaty{animation:none}
      .item,.toc a,.btn,.foot-links a,details{transition:none}
    }