:root{
      --bg:#f7f1e8;
      --bg2:#f3eadc;
      --card:#ffffff;
      --text:#2b221a;
      --muted:#6d5f52;
      --line:rgba(43,34,26,.14);
      --brand:#9b5a2e;
      --brand2:#c7773a;
      --shadow:0 14px 40px rgba(43,34,26,.10);
      --shadow2:0 10px 22px rgba(43,34,26,.10);
      --radius:18px;
      --radius2:14px;
      --focus:0 0 0 3px rgba(155,90,46,.22);
    }
    *{box-sizing:border-box}
    html,body{height:100%}
    body{
      margin:0;
      font-family: ui-sans-serif, system-ui, -apple-system, "PingFang SC","Hiragino Sans GB","Microsoft YaHei", Arial, sans-serif;
      color:var(--text);
      background:
        radial-gradient(1200px 700px at 10% 0%, rgba(155,90,46,.12), transparent 55%),
        radial-gradient(900px 540px at 92% 14%, rgba(199,119,58,.10), transparent 55%),
        linear-gradient(180deg, var(--bg) 0%, var(--bg2) 70%, #f6efe6 100%);
    }
    a{color:inherit}
    .container{
      width:100%;
      max-width:1120px;
      padding:0 18px;
      margin:0 auto;
    }
    header{
      position:sticky;
      top:0;
      z-index:20;
      backdrop-filter: blur(10px);
      background: linear-gradient(180deg, rgba(247,241,232,.82) 0%, rgba(247,241,232,.62) 100%);
      border-bottom:1px solid rgba(43,34,26,.10);
    }
    .nav-wrap{
      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;
      text-decoration:none;
    }
    .logo{
      width:38px; height:38px; border-radius:12px;
      background: linear-gradient(145deg, rgba(155,90,46,.14), rgba(199,119,58,.12));
      border:1px solid rgba(155,90,46,.22);
      box-shadow: 0 10px 26px rgba(155,90,46,.10);
      display:flex; align-items:center; justify-content:center;
      font-weight:900; letter-spacing:.02em;
      color:var(--brand);
    }
    .brand span{
      font-weight:800;
      color:#3a2a1d;
    }
    .nav-right{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .nav-links{
      display:flex; align-items:center; gap:14px; flex-wrap:wrap;
    }
    .nav-links a{
      text-decoration:none;
      font-weight:650;
      color:#3a2a1d;
      padding:8px 10px;
      border-radius:12px;
      border:1px solid transparent;
      transition: background .2s ease, border-color .2s ease, transform .2s ease;
      white-space:nowrap;
    }
    .nav-links a:hover{
      background: rgba(155,90,46,.08);
      border-color: rgba(155,90,46,.18);
      transform: translateY(-1px);
    }
    .cta{
      display:flex; align-items:center; gap:10px; flex-wrap:wrap; justify-content:flex-end;
    }
    .btn{
      appearance:none;
      border:none;
      cursor:pointer;
      padding:10px 14px;
      border-radius:14px;
      font-weight:800;
      text-decoration:none;
      display:inline-flex;
      align-items:center;
      gap:10px;
      transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
      user-select:none;
    }
    .btn:focus{outline:none; box-shadow:var(--focus)}
    .btn-primary{
      background: linear-gradient(180deg, rgba(155,90,46,.98), rgba(140,74,36,.98));
      color:#fff;
      box-shadow: 0 14px 30px rgba(155,90,46,.22);
    }
    .btn-primary:hover{transform: translateY(-1px)}
    .btn-ghost{
      background: rgba(255,255,255,.65);
      border:1px solid rgba(43,34,26,.16);
      color:#2b221a;
    }
    .btn-ghost:hover{transform: translateY(-1px); box-shadow: var(--shadow2)}
    .btn-icon{
      width:18px; height:18px; display:inline-block;
    }

    .hero{
      padding:22px 0 10px;
    }
    .hero-grid{
      display:grid;
      grid-template-columns: 1.1fr .9fr;
      gap:16px;
      align-items:stretch;
    }
    .hero-card{
      background: rgba(255,255,255,.70);
      border:1px solid rgba(43,34,26,.12);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      padding:20px;
      overflow:hidden;
      position:relative;
    }
    .hero-card:before{
      content:"";
      position:absolute; inset:-2px -2px auto -2px; height:120px;
      background:
        radial-gradient(420px 160px at 15% 50%, rgba(155,90,46,.22), transparent 60%),
        radial-gradient(360px 140px at 85% 10%, rgba(199,119,58,.18), transparent 55%),
        linear-gradient(90deg, rgba(155,90,46,.10), rgba(199,119,58,.06));
      pointer-events:none;
    }
    .kicker{
      position:relative;
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:8px 12px;
      border-radius:999px;
      border:1px solid rgba(155,90,46,.18);
      background: rgba(255,255,255,.72);
      font-weight:800;
      color:#4a2d19;
      margin-bottom:12px;
    }
    .kicker-dot{
      width:10px; height:10px; border-radius:50%;
      background: linear-gradient(180deg, var(--brand2), var(--brand));
      box-shadow: 0 8px 16px rgba(155,90,46,.24);
    }
    h1{
      position:relative;
      margin:0 0 10px;
      font-size: clamp(22px, 3.1vw, 36px);
      line-height:1.18;
      letter-spacing:-.02em;
    }
    .lead{
      position:relative;
      margin:0;
      color:var(--muted);
      font-size: 15.5px;
      line-height:1.75;
      max-width:62ch;
    }
    .hero-actions{
      position:relative;
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
      margin-top:14px;
    }
    .mini-grid{
      display:grid;
      grid-template-columns:1fr;
      gap:12px;
      height:100%;
    }
    .info-stack{
      background: rgba(255,255,255,.66);
      border:1px solid rgba(43,34,26,.12);
      border-radius: var(--radius);
      padding:16px;
      box-shadow: var(--shadow2);
    }
    .info-title{
      display:flex; align-items:center; justify-content:space-between; gap:10px;
      margin-bottom:10px;
    }
    .info-title h2{
      margin:0;
      font-size: 16px;
      letter-spacing:-.01em;
    }
    .badge{
      font-size:12px;
      padding:7px 10px;
      border-radius:999px;
      border:1px solid rgba(155,90,46,.22);
      background: rgba(155,90,46,.08);
      color:#4a2d19;
      font-weight:800;
      white-space:nowrap;
    }
    .kv{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:10px;
    }
    .kv .item{
      border-radius:14px;
      border:1px solid rgba(43,34,26,.12);
      background: rgba(255,255,255,.75);
      padding:10px 10px;
      transition: transform .18s ease, border-color .18s ease;
      min-height:62px;
    }
    .kv .item:hover{
      transform: translateY(-1px);
      border-color: rgba(155,90,46,.22);
    }
    .kv .label{
      color:var(--muted);
      font-size:12px;
      font-weight:750;
      margin-bottom:6px;
    }
    .kv .value{
      font-size:14px;
      font-weight:900;
      line-height:1.25;
    }

    nav.toc{
      margin-top:14px;
      background: rgba(255,255,255,.58);
      border:1px solid rgba(43,34,26,.12);
      border-radius: var(--radius2);
      padding:12px;
    }
    .toc-top{
      display:flex; align-items:center; justify-content:space-between; gap:10px; margin-bottom:10px;
    }
    .toc-top strong{
      font-size:14px;
      letter-spacing:-.01em;
    }
    .toc a{
      display:block;
      text-decoration:none;
      color:#3a2a1d;
      padding:9px 10px;
      border-radius:12px;
      border:1px solid transparent;
      background: transparent;
      transition: background .18s ease, border-color .18s ease, transform .18s ease;
      font-weight:750;
    }
    .toc a:hover{
      background: rgba(155,90,46,.08);
      border-color: rgba(155,90,46,.18);
      transform: translateY(-1px);
    }
    .toc-list{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:10px;
    }

    main{padding:14px 0 0}
    section{padding:10px 0}

    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:12px;
      margin:10px 0 12px;
    }
    .section-head h2{
      margin:0;
      font-size: 20px;
      letter-spacing:-.02em;
    }
    .section-head p{
      margin:0;
      color:var(--muted);
      font-size:13.5px;
      line-height:1.6;
      max-width:56ch;
    }

    .grid-3{
      display:grid;
      grid-template-columns: repeat(3, 1fr);
      gap:12px;
    }
    .card{
      background: rgba(255,255,255,.72);
      border:1px solid rgba(43,34,26,.12);
      border-radius: var(--radius);
      padding:14px;
      box-shadow: 0 10px 24px rgba(43,34,26,.08);
      transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
      position:relative;
      overflow:hidden;
    }
    .card:after{
      content:"";
      position:absolute; inset:auto -40px -40px auto;
      width:120px; height:120px;
      background: radial-gradient(circle at 30% 30%, rgba(155,90,46,.20), transparent 55%);
      transform: rotate(-18deg);
      pointer-events:none;
      opacity:.6;
    }
    .card:hover{
      transform: translateY(-2px);
      border-color: rgba(155,90,46,.20);
      box-shadow: 0 16px 34px rgba(43,34,26,.12);
    }
    .card h3{
      margin:0 0 8px;
      font-size: 15.5px;
      letter-spacing:-.01em;
      line-height:1.35;
    }
    .card p{
      margin:0;
      color:var(--muted);
      font-size: 13.5px;
      line-height:1.75;
    }
    .list{
      margin:0; padding-left:18px;
      color:var(--muted);
      line-height:1.85;
      font-size:13.5px;
    }
    .list li{margin:6px 0}

    .steps{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:12px;
      align-items:start;
    }
    .step-card{
      background: rgba(255,255,255,.72);
      border:1px solid rgba(43,34,26,.12);
      border-radius: var(--radius);
      padding:16px;
      box-shadow: 0 10px 24px rgba(43,34,26,.08);
    }
    .step-head{
      display:flex; align-items:center; justify-content:space-between; gap:10px; margin-bottom:10px;
    }
    .step-head h3{margin:0; font-size:16px; letter-spacing:-.01em}
    .pill{
      font-size:12px;
      font-weight:900;
      color:#4a2d19;
      border:1px solid rgba(155,90,46,.22);
      background: rgba(155,90,46,.08);
      padding:7px 10px;
      border-radius:999px;
      white-space:nowrap;
    }
    .step-items{
      display:grid;
      gap:10px;
    }
    .step{
      display:flex; gap:10px; align-items:flex-start;
      border-radius:14px;
      border:1px solid rgba(43,34,26,.12);
      background: rgba(255,255,255,.78);
      padding:10px 10px;
    }
    .num{
      width:30px; height:30px; border-radius:10px;
      background: linear-gradient(180deg, rgba(155,90,46,.16), rgba(199,119,58,.10));
      border:1px solid rgba(155,90,46,.22);
      display:flex; align-items:center; justify-content:center;
      font-weight:1000;
      color:var(--brand);
      flex:0 0 auto;
      margin-top:2px;
    }
    .step b{
      display:block;
      font-size:14px;
      margin-bottom:2px;
    }
    .step span{
      color:var(--muted);
      font-size:13.3px;
      line-height:1.6;
      display:block;
    }

    details.faq{
      background: rgba(255,255,255,.72);
      border:1px solid rgba(43,34,26,.12);
      border-radius: var(--radius);
      padding:12px 14px;
      box-shadow: 0 10px 24px rgba(43,34,26,.08);
      transition: transform .18s ease, border-color .18s ease;
    }
    details.faq[open]{
      border-color: rgba(155,90,46,.24);
      transform: translateY(-1px);
    }
    summary{
      cursor:pointer;
      list-style:none;
      font-weight:900;
      letter-spacing:-.01em;
      font-size:15px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding-right:8px;
    }
    summary::-webkit-details-marker{display:none}
    .sum-right{
      flex:0 0 auto;
      width:28px; height:28px;
      border-radius:12px;
      border:1px solid rgba(43,34,26,.14);
      background: rgba(255,255,255,.7);
      display:flex; align-items:center; justify-content:center;
      color:var(--brand);
      transition: transform .2s ease, border-color .2s ease;
    }
    details[open] .sum-right{
      transform: rotate(45deg);
      border-color: rgba(155,90,46,.26);
    }
    .faq-body{
      margin-top:10px;
      color:var(--muted);
      font-size:13.7px;
      line-height:1.85;
    }
    .faq-body ul{margin:10px 0 0; padding-left:18px}
    .faq-body li{margin:6px 0}

    .faq-grid{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:12px;
    }

    .article-card{
      background: rgba(255,255,255,.72);
      border:1px solid rgba(43,34,26,.12);
      border-radius: var(--radius);
      padding:16px;
      box-shadow: 0 10px 24px rgba(43,34,26,.08);
    }
    .article-card .meta-row{
      display:flex; gap:10px; flex-wrap:wrap; align-items:center; margin-bottom:10px;
    }
    .chip{
      border:1px solid rgba(43,34,26,.14);
      background: rgba(255,255,255,.78);
      border-radius:999px;
      padding:7px 10px;
      font-size:12px;
      color:#3a2a1d;
      font-weight:850;
    }
    .article-title{
      margin:0 0 8px;
      font-size:16px;
      letter-spacing:-.01em;
    }
    .article-card p{
      margin:0;
      color:var(--muted);
      font-size:13.7px;
      line-height:1.9;
    }
    .inline-link{
      color:#6b3e1f;
      font-weight:900;
      text-decoration:none;
      border-bottom:1px dashed rgba(155,90,46,.45);
      padding-bottom:2px;
    }
    .inline-link:hover{
      border-bottom-style:solid;
    }

    .media-strip{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:12px;
      align-items:stretch;
    }
    .media-card{
      background: rgba(255,255,255,.72);
      border:1px solid rgba(43,34,26,.12);
      border-radius: var(--radius);
      padding:14px;
      box-shadow: 0 10px 24px rgba(43,34,26,.08);
      overflow:hidden;
    }
    .thumbs{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:10px;
    }
    .thumb{
      border-radius:14px;
      border:1px solid rgba(43,34,26,.12);
      background: rgba(255,255,255,.80);
      padding:8px;
    }
    .thumb img{
      width:100%;
      display:block;
      height:auto;
      border-radius:10px;
      object-fit:contain;
    }
    .thumb .alt{
      margin-top:8px;
      font-size:12.5px;
      color:var(--muted);
      line-height:1.4;
      font-weight:750;
    }

    footer{
      margin-top:10px;
      background: linear-gradient(180deg, rgba(155,90,46,.10), rgba(155,90,46,.04));
      border-top:1px solid rgba(43,34,26,.12);
      padding:18px 0 22px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns: 1.05fr .95fr;
      gap:14px;
      align-items:start;
    }
    .footer-card{
      background: rgba(255,255,255,.64);
      border:1px solid rgba(43,34,26,.12);
      border-radius: var(--radius);
      padding:14px;
      box-shadow: 0 10px 24px rgba(43,34,26,.08);
    }
    .footer-card h2{
      margin:0 0 10px;
      font-size:16.5px;
      letter-spacing:-.01em;
    }
    .contact-grid{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:10px;
    }
    .contact-item{
      border-radius:14px;
      border:1px solid rgba(43,34,26,.12);
      background: rgba(255,255,255,.78);
      padding:10px;
    }
    .contact-item .t{color:var(--muted); font-size:12px; font-weight:900; margin-bottom:6px}
    .contact-item .v{font-weight:950; font-size:14px; line-height:1.35}
    .qr-row{
      display:flex; gap:12px; align-items:flex-start; flex-wrap:wrap;
      margin-top:12px;
    }
    .qr{
      border-radius:16px;
      border:1px solid rgba(43,34,26,.12);
      background: rgba(255,255,255,.78);
      padding:10px;
      min-width:160px;
      flex:0 0 auto;
    }
    .qr img{
      width:100%;
      height:auto;
      display:block;
      border-radius:12px;
      object-fit:contain;
      background:#fff;
    }
    .qr .cap{
      margin-top:8px;
      color:var(--muted);
      font-size:12.5px;
      font-weight:850;
      line-height:1.4;
    }
    .footer-links{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:10px;
      margin-top:10px;
    }
    .footer-links a{
      text-decoration:none;
      border:1px solid rgba(43,34,26,.12);
      background: rgba(255,255,255,.78);
      padding:10px 10px;
      border-radius:14px;
      font-weight:900;
      color:#3a2a1d;
      transition: transform .18s ease, border-color .18s ease;
    }
    .footer-links a:hover{
      transform: translateY(-1px);
      border-color: rgba(155,90,46,.22);
    }
    .copyright{
      margin-top:12px;
      color:rgba(43,34,26,.70);
      font-size:12.5px;
      font-weight:800;
      text-align:center;
    }

    .sr-only{
      position:absolute!important;
      width:1px;height:1px;
      padding:0;margin:-1px;
      overflow:hidden;clip:rect(0,0,0,0);
      white-space:nowrap;border:0;
    }

    .fade-in{
      opacity:0;
      transform: translateY(8px);
      transition: opacity .55s ease, transform .55s ease;
    }
    .fade-in.is-visible{
      opacity:1;
      transform: translateY(0);
    }

    @media (max-width: 980px){
      .hero-grid{grid-template-columns: 1fr; }
      .grid-3{grid-template-columns: 1fr; }
      .toc-list{grid-template-columns: 1fr; }
      .steps{grid-template-columns: 1fr; }
      .faq-grid{grid-template-columns: 1fr; }
      .media-strip{grid-template-columns: 1fr; }
      .footer-grid{grid-template-columns: 1fr; }
      .contact-grid{grid-template-columns: 1fr; }
    }

    @media (prefers-reduced-motion: reduce){
      .fade-in{transition:none}
      .card,.kv .item,.btn,.nav-links a,details.faq{transition:none}
      .card:hover,.btn-primary:hover,.btn-ghost:hover,.nav-links a:hover,.kv .item:hover{transform:none}
      .sum-right{transition:none}
    }