/* roulang page: index */
:root{
      --bg:#f7f3ee;
      --bg-soft:#fffaf4;
      --surface:#ffffff;
      --surface-2:#fff6eb;
      --text:#201a17;
      --muted:#746760;
      --weak:#9b8e86;
      --primary:#9a4f2f;
      --primary-dark:#71361f;
      --primary-soft:#f1d8c9;
      --accent:#2f6b63;
      --accent-soft:#dcefeb;
      --warning:#b36b1d;
      --border:#eaded5;
      --shadow:0 18px 45px rgba(72,44,29,.12);
      --shadow-soft:0 10px 28px rgba(72,44,29,.08);
      --radius-lg:28px;
      --radius-md:18px;
      --radius-sm:12px;
      --container:1180px;
      --ease:all .25s ease;
    }

    *{
      box-sizing:border-box;
      margin:0;
      padding:0;
    }

    html{
      scroll-behavior:smooth;
      text-size-adjust:100%;
    }

    body{
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      background:
        radial-gradient(circle at 8% 4%, rgba(154,79,47,.14), transparent 34%),
        radial-gradient(circle at 88% 10%, rgba(47,107,99,.12), transparent 34%),
        var(--bg);
      color:var(--text);
      line-height:1.72;
      font-size:16px;
      overflow-x:hidden;
    }

    a{
      color:inherit;
      text-decoration:none;
    }

    img{
      max-width:100%;
      display:block;
    }

    button,
    input,
    textarea{
      font:inherit;
    }

    button{
      border:0;
      cursor:pointer;
    }

    ::selection{
      background:var(--primary);
      color:#fff;
    }

    .container{
      width:min(var(--container), calc(100% - 40px));
      margin:0 auto;
    }

    .skip-link{
      position:absolute;
      left:-999px;
      top:12px;
      z-index:1000;
      background:#fff;
      color:var(--primary-dark);
      padding:10px 14px;
      border-radius:12px;
      box-shadow:var(--shadow-soft);
    }

    .skip-link:focus{
      left:16px;
      outline:3px solid rgba(154,79,47,.25);
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:100;
      background:rgba(247,243,238,.86);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(234,222,213,.75);
    }

    .nav-wrap{
      height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }

    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:850;
      letter-spacing:-.02em;
    }

    .brand-mark{
      width:42px;
      height:42px;
      border-radius:16px;
      background:linear-gradient(135deg, var(--primary), var(--accent));
      display:grid;
      place-items:center;
      color:#fff;
      box-shadow:0 10px 24px rgba(154,79,47,.22);
      flex:0 0 auto;
    }

    .brand-mark svg{
      width:23px;
      height:23px;
    }

    .brand-text{
      font-size:18px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }

    .nav-links{
      display:flex;
      align-items:center;
      gap:8px;
    }

    .nav-links a{
      padding:10px 15px;
      border-radius:999px;
      color:var(--muted);
      font-weight:700;
      transition:var(--ease);
    }

    .nav-links a:hover,
    .nav-links a:focus{
      color:var(--primary-dark);
      background:rgba(154,79,47,.09);
      outline:none;
    }

    .nav-links a.active{
      color:#fff;
      background:var(--primary);
      box-shadow:0 10px 20px rgba(154,79,47,.18);
    }

    .nav-action{
      display:flex;
      align-items:center;
      gap:12px;
    }

    .menu-toggle{
      display:none;
    }

    .menu-btn{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      background:#fff;
      border:1px solid var(--border);
      align-items:center;
      justify-content:center;
      flex-direction:column;
      gap:5px;
      box-shadow:var(--shadow-soft);
    }

    .menu-btn span{
      width:20px;
      height:2px;
      background:var(--text);
      border-radius:999px;
      transition:var(--ease);
    }

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      padding:12px 18px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:800;
      line-height:1;
      transition:var(--ease);
      white-space:nowrap;
    }

    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg, var(--primary), var(--primary-dark));
      box-shadow:0 14px 28px rgba(154,79,47,.24);
    }

    .btn-primary:hover{
      transform:translateY(-2px);
      box-shadow:0 18px 36px rgba(154,79,47,.3);
    }

    .btn-secondary{
      background:#fff;
      color:var(--primary-dark);
      border-color:var(--border);
      box-shadow:var(--shadow-soft);
    }

    .btn-secondary:hover{
      transform:translateY(-2px);
      border-color:rgba(154,79,47,.35);
      box-shadow:0 16px 32px rgba(72,44,29,.12);
    }

    .btn-ghost{
      color:var(--accent);
      background:var(--accent-soft);
      border-color:rgba(47,107,99,.12);
    }

    .btn-ghost:hover{
      background:#cfe7e2;
      transform:translateY(-2px);
    }

    .btn:focus,
    .input:focus,
    .faq-item summary:focus{
      outline:3px solid rgba(154,79,47,.22);
      outline-offset:3px;
    }

    .hero{
      position:relative;
      min-height:720px;
      display:flex;
      align-items:center;
      isolation:isolate;
      overflow:hidden;
    }

    .hero::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg, rgba(32,26,23,.78), rgba(32,26,23,.46) 52%, rgba(32,26,23,.18)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      z-index:-2;
    }

    .hero::after{
      content:"";
      position:absolute;
      left:0;
      right:0;
      bottom:-1px;
      height:150px;
      background:linear-gradient(0deg, var(--bg), transparent);
      z-index:-1;
    }

    .hero-inner{
      padding:104px 0 128px;
      display:grid;
      grid-template-columns:minmax(0, .92fr) minmax(340px, .58fr);
      gap:42px;
      align-items:end;
    }

    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.14);
      border:1px solid rgba(255,255,255,.24);
      color:#fff2e8;
      font-weight:800;
      font-size:14px;
      backdrop-filter:blur(10px);
    }

    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:#75d7bd;
      box-shadow:0 0 0 6px rgba(117,215,189,.16);
    }

    h1{
      margin-top:22px;
      color:#fff;
      font-size:clamp(42px, 6.6vw, 86px);
      line-height:1.02;
      letter-spacing:-.065em;
      max-width:890px;
    }

    .hero-lead{
      margin-top:24px;
      max-width:760px;
      color:rgba(255,255,255,.88);
      font-size:20px;
      line-height:1.9;
    }

    .hero-actions{
      margin-top:34px;
      display:flex;
      align-items:center;
      gap:14px;
      flex-wrap:wrap;
    }

    .hero-note{
      margin-top:22px;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      color:rgba(255,255,255,.78);
      font-size:14px;
    }

    .hero-note span{
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.16);
      backdrop-filter:blur(10px);
    }

    .hero-panel{
      background:rgba(255,250,244,.92);
      border:1px solid rgba(255,255,255,.52);
      border-radius:var(--radius-lg);
      padding:24px;
      box-shadow:0 24px 70px rgba(20,10,4,.32);
      backdrop-filter:blur(18px);
    }

    .panel-title{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding-bottom:16px;
      border-bottom:1px solid var(--border);
      font-weight:900;
      font-size:18px;
    }

    .panel-title .badge{
      flex:0 0 auto;
    }

    .safety-list{
      display:grid;
      gap:12px;
      margin-top:18px;
    }

    .safety-list li{
      list-style:none;
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:14px;
      border-radius:16px;
      background:#fff;
      border:1px solid var(--border);
    }

    .check{
      width:24px;
      height:24px;
      border-radius:9px;
      display:grid;
      place-items:center;
      flex:0 0 auto;
      background:var(--accent-soft);
      color:var(--accent);
      font-weight:900;
      margin-top:2px;
    }

    .safety-list strong{
      display:block;
      color:var(--text);
      margin-bottom:2px;
    }

    .safety-list p{
      color:var(--muted);
      font-size:14px;
      line-height:1.65;
    }

    main{
      position:relative;
    }

    .section{
      padding:88px 0;
    }

    .section.compact{
      padding:64px 0;
    }

    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:flex-end;
      gap:24px;
      margin-bottom:34px;
    }

    .section-kicker{
      color:var(--primary);
      font-weight:900;
      letter-spacing:.04em;
      margin-bottom:8px;
    }

    .section-title{
      font-size:clamp(30px, 4vw, 50px);
      line-height:1.16;
      letter-spacing:-.045em;
      max-width:760px;
    }

    .section-desc{
      color:var(--muted);
      max-width:520px;
      font-size:17px;
    }

    .grid{
      display:grid;
      gap:22px;
    }

    .grid-3{
      grid-template-columns:repeat(3, minmax(0, 1fr));
    }

    .grid-4{
      grid-template-columns:repeat(4, minmax(0, 1fr));
    }

    .card{
      background:rgba(255,255,255,.82);
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      padding:24px;
      box-shadow:var(--shadow-soft);
      transition:var(--ease);
      position:relative;
      overflow:hidden;
    }

    .card:hover{
      transform:translateY(-5px);
      box-shadow:var(--shadow);
      border-color:rgba(154,79,47,.26);
    }

    .card-icon{
      width:52px;
      height:52px;
      border-radius:18px;
      display:grid;
      place-items:center;
      background:var(--primary-soft);
      color:var(--primary-dark);
      font-weight:900;
      font-size:22px;
      margin-bottom:20px;
    }

    .card h3{
      font-size:21px;
      line-height:1.35;
      margin-bottom:10px;
      letter-spacing:-.02em;
    }

    .card p{
      color:var(--muted);
    }

    .badge,
    .tag{
      display:inline-flex;
      align-items:center;
      gap:6px;
      border-radius:999px;
      font-weight:800;
      font-size:13px;
      line-height:1;
    }

    .badge{
      padding:8px 10px;
      color:var(--primary-dark);
      background:var(--primary-soft);
    }

    .tag{
      padding:7px 10px;
      color:var(--accent);
      background:var(--accent-soft);
      border:1px solid rgba(47,107,99,.12);
    }

    .feature-band{
      background:linear-gradient(135deg, rgba(255,250,244,.9), rgba(241,216,201,.58));
      border-top:1px solid var(--border);
      border-bottom:1px solid var(--border);
    }

    .feature{
      display:grid;
      grid-template-columns:minmax(0, .92fr) minmax(320px, .72fr);
      gap:36px;
      align-items:center;
    }

    .feature-copy{
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      padding:34px;
      box-shadow:var(--shadow-soft);
    }

    .feature-copy h2{
      font-size:clamp(30px, 4vw, 48px);
      line-height:1.16;
      letter-spacing:-.045em;
      margin-bottom:16px;
    }

    .feature-copy p{
      color:var(--muted);
      font-size:17px;
      margin-bottom:18px;
    }

    .feature-list{
      display:grid;
      gap:13px;
      margin-top:24px;
    }

    .feature-list li{
      list-style:none;
      display:flex;
      gap:12px;
      align-items:flex-start;
      color:var(--muted);
      padding:12px 0;
      border-bottom:1px dashed var(--border);
    }

    .feature-list li:last-child{
      border-bottom:0;
    }

    .feature-image{
      border-radius:var(--radius-lg);
      overflow:hidden;
      min-height:460px;
      box-shadow:var(--shadow);
      position:relative;
      border:1px solid rgba(255,255,255,.7);
    }

    .feature-image img{
      width:100%;
      height:100%;
      min-height:460px;
      object-fit:cover;
    }

    .feature-image::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(0deg, rgba(32,26,23,.45), transparent 58%);
      pointer-events:none;
    }

    .image-caption{
      position:absolute;
      left:22px;
      right:22px;
      bottom:22px;
      z-index:2;
      color:#fff;
      background:rgba(32,26,23,.45);
      border:1px solid rgba(255,255,255,.2);
      border-radius:18px;
      padding:16px;
      backdrop-filter:blur(12px);
    }

    .check-section{
      background:#fffaf4;
    }

    .check-layout{
      display:grid;
      grid-template-columns:minmax(280px,.45fr) minmax(0,1fr);
      gap:28px;
      align-items:start;
    }

    .sticky-note{
      position:sticky;
      top:100px;
      border-radius:var(--radius-lg);
      padding:28px;
      background:linear-gradient(135deg, var(--primary-dark), var(--primary));
      color:#fff;
      box-shadow:var(--shadow);
      overflow:hidden;
    }

    .sticky-note::after{
      content:"";
      position:absolute;
      width:180px;
      height:180px;
      right:-70px;
      bottom:-70px;
      border-radius:50%;
      background:rgba(255,255,255,.12);
    }

    .sticky-note h2{
      font-size:30px;
      line-height:1.2;
      margin-bottom:12px;
      letter-spacing:-.03em;
    }

    .sticky-note p{
      color:rgba(255,255,255,.82);
    }

    .check-cards{
      display:grid;
      gap:16px;
    }

    .check-card{
      display:grid;
      grid-template-columns:auto 1fr;
      gap:16px;
      padding:22px;
      background:#fff;
      border:1px solid var(--border);
      border-radius:22px;
      box-shadow:var(--shadow-soft);
      transition:var(--ease);
    }

    .check-card:hover{
      transform:translateX(4px);
      border-color:rgba(47,107,99,.28);
    }

    .step-num{
      width:42px;
      height:42px;
      border-radius:15px;
      display:grid;
      place-items:center;
      background:var(--accent);
      color:#fff;
      font-weight:900;
    }

    .check-card h3{
      font-size:20px;
      margin-bottom:6px;
    }

    .check-card p{
      color:var(--muted);
    }

    .topic-card{
      padding:0;
      overflow:hidden;
    }

    .topic-media{
      height:190px;
      position:relative;
      overflow:hidden;
    }

    .topic-media img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:transform .45s ease;
    }

    .topic-card:hover .topic-media img{
      transform:scale(1.06);
    }

    .topic-body{
      padding:22px;
    }

    .topic-meta{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-bottom:12px;
    }

    .content-list{
      display:grid;
      gap:16px;
    }

    .post-item{
      display:grid;
      grid-template-columns:1fr auto;
      gap:18px;
      align-items:center;
      padding:20px 22px;
      border-radius:22px;
      background:#fff;
      border:1px solid var(--border);
      box-shadow:var(--shadow-soft);
      transition:var(--ease);
    }

    .post-item:hover{
      transform:translateY(-3px);
      border-color:rgba(154,79,47,.28);
      box-shadow:var(--shadow);
    }

    .post-item h3{
      font-size:20px;
      line-height:1.38;
      margin:8px 0 6px;
      letter-spacing:-.02em;
    }

    .post-item p{
      color:var(--muted);
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }

    .post-arrow{
      width:44px;
      height:44px;
      border-radius:16px;
      display:grid;
      place-items:center;
      background:var(--surface-2);
      color:var(--primary);
      font-weight:900;
      transition:var(--ease);
    }

    .post-item:hover .post-arrow{
      background:var(--primary);
      color:#fff;
    }

    .empty-state{
      padding:28px;
      border-radius:22px;
      background:#fff;
      border:1px dashed var(--border);
      color:var(--muted);
      text-align:center;
    }

    .proof{
      background:
        linear-gradient(180deg, rgba(247,243,238,.3), rgba(247,243,238,.96)),
        url('/assets/images/backpic/back-2.webp') center/cover fixed;
      border-top:1px solid var(--border);
      border-bottom:1px solid var(--border);
    }

    .proof-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0, 1fr));
      gap:22px;
    }

    .quote-card{
      min-height:240px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      background:rgba(255,255,255,.88);
      backdrop-filter:blur(14px);
    }

    .quote-card blockquote{
      color:var(--text);
      font-size:18px;
      line-height:1.78;
    }

    .quote-author{
      margin-top:20px;
      color:var(--muted);
      font-weight:800;
    }

    .faq-wrap{
      display:grid;
      grid-template-columns:minmax(260px,.42fr) minmax(0,1fr);
      gap:34px;
      align-items:start;
    }

    .faq-intro{
      padding:30px;
      border-radius:var(--radius-lg);
      background:var(--surface-2);
      border:1px solid var(--border);
    }

    .faq-intro h2{
      font-size:34px;
      line-height:1.2;
      margin-bottom:12px;
      letter-spacing:-.04em;
    }

    .faq-intro p{
      color:var(--muted);
    }

    .faq-list{
      display:grid;
      gap:14px;
    }

    .faq-item{
      border:1px solid var(--border);
      border-radius:20px;
      background:#fff;
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }

    .faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:20px 22px;
      display:flex;
      justify-content:space-between;
      gap:16px;
      font-weight:900;
      color:var(--text);
    }

    .faq-item summary::-webkit-details-marker{
      display:none;
    }

    .faq-item summary::after{
      content:"+";
      width:28px;
      height:28px;
      border-radius:10px;
      display:grid;
      place-items:center;
      background:var(--primary-soft);
      color:var(--primary-dark);
      flex:0 0 auto;
      transition:var(--ease);
    }

    .faq-item[open] summary::after{
      content:"−";
      background:var(--primary);
      color:#fff;
    }

    .faq-answer{
      padding:0 22px 22px;
      color:var(--muted);
    }

    .cta{
      padding:88px 0 104px;
    }

    .cta-box{
      position:relative;
      overflow:hidden;
      border-radius:34px;
      padding:48px;
      background:
        linear-gradient(135deg, rgba(32,26,23,.82), rgba(47,107,99,.78)),
        url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
      color:#fff;
      box-shadow:0 30px 80px rgba(32,26,23,.24);
    }

    .cta-box::after{
      content:"";
      position:absolute;
      width:260px;
      height:260px;
      right:-110px;
      top:-110px;
      border-radius:50%;
      background:rgba(255,255,255,.12);
    }

    .cta-content{
      position:relative;
      z-index:2;
      max-width:760px;
    }

    .cta h2{
      font-size:clamp(32px, 4vw, 54px);
      line-height:1.14;
      letter-spacing:-.05em;
      margin-bottom:16px;
    }

    .cta p{
      color:rgba(255,255,255,.84);
      font-size:18px;
      margin-bottom:28px;
    }

    .subscribe{
      display:flex;
      gap:12px;
      max-width:640px;
      padding:8px;
      background:rgba(255,255,255,.14);
      border:1px solid rgba(255,255,255,.22);
      border-radius:999px;
      backdrop-filter:blur(12px);
    }

    .input{
      flex:1;
      min-width:0;
      border:0;
      background:#fff;
      color:var(--text);
      padding:13px 16px;
      border-radius:999px;
      outline:none;
    }

    .input::placeholder{
      color:var(--weak);
    }

    .site-footer{
      background:#201a17;
      color:#efe6df;
      padding:56px 0 24px;
    }

    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:34px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,255,255,.1);
    }

    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      font-weight:900;
      font-size:20px;
      margin-bottom:14px;
    }

    .footer-brand .brand-mark{
      box-shadow:none;
    }

    .footer-text{
      color:rgba(239,230,223,.72);
      max-width:520px;
    }

    .footer-col h3{
      font-size:16px;
      margin-bottom:14px;
      color:#fff;
    }

    .footer-links{
      display:grid;
      gap:10px;
    }

    .footer-links a{
      color:rgba(239,230,223,.72);
      transition:var(--ease);
    }

    .footer-links a:hover{
      color:#fff;
      transform:translateX(3px);
    }

    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:20px;
      flex-wrap:wrap;
      padding-top:22px;
      color:rgba(239,230,223,.58);
      font-size:14px;
    }

    @media (max-width:1024px){
      .hero{
        min-height:auto;
      }

      .hero-inner{
        grid-template-columns:1fr;
        padding:86px 0 110px;
      }

      .hero-panel{
        max-width:640px;
      }

      .grid-4{
        grid-template-columns:repeat(2, minmax(0,1fr));
      }

      .grid-3,
      .proof-grid{
        grid-template-columns:repeat(2, minmax(0,1fr));
      }

      .feature,
      .check-layout,
      .faq-wrap{
        grid-template-columns:1fr;
      }

      .sticky-note{
        position:relative;
        top:auto;
      }

      .section-head{
        align-items:flex-start;
        flex-direction:column;
      }
    }

    @media (max-width:768px){
      .container{
        width:min(100% - 28px, var(--container));
      }

      .nav-wrap{
        height:68px;
      }

      .brand-text{
        max-width:210px;
        font-size:16px;
      }

      .menu-btn{
        display:flex;
      }

      .nav-links{
        position:absolute;
        left:14px;
        right:14px;
        top:76px;
        padding:14px;
        background:rgba(255,255,255,.96);
        border:1px solid var(--border);
        border-radius:22px;
        box-shadow:var(--shadow);
        flex-direction:column;
        align-items:stretch;
        transform:translateY(-12px);
        opacity:0;
        pointer-events:none;
        transition:var(--ease);
      }

      .nav-links a{
        text-align:center;
        border-radius:16px;
      }

      .menu-toggle:checked ~ .nav-links{
        transform:translateY(0);
        opacity:1;
        pointer-events:auto;
      }

      .menu-toggle:checked + .menu-btn span:nth-child(1){
        transform:translateY(7px) rotate(45deg);
      }

      .menu-toggle:checked + .menu-btn span:nth-child(2){
        opacity:0;
      }

      .menu-toggle:checked + .menu-btn span:nth-child(3){
        transform:translateY(-7px) rotate(-45deg);
      }

      .nav-action .btn{
        display:none;
      }

      .hero::before{
        background:
          linear-gradient(180deg, rgba(32,26,23,.76), rgba(32,26,23,.58)),
          url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      }

      .hero-inner{
        padding:70px 0 92px;
      }

      .hero-lead{
        font-size:17px;
      }

      .hero-actions{
        align-items:stretch;
      }

      .hero-actions .btn{
        width:100%;
      }

      .section{
        padding:66px 0;
      }

      .grid-3,
      .grid-4,
      .proof-grid{
        grid-template-columns:1fr;
      }

      .feature-copy,
      .cta-box{
        padding:28px;
      }

      .post-item{
        grid-template-columns:1fr;
      }

      .post-arrow{
        justify-self:start;
      }

      .footer-grid{
        grid-template-columns:1fr;
      }

      .subscribe{
        border-radius:24px;
        flex-direction:column;
      }

      .subscribe .btn{
        width:100%;
      }
    }

    @media (max-width:520px){
      body{
        font-size:15px;
      }

      .brand-mark{
        width:38px;
        height:38px;
        border-radius:14px;
      }

      .brand-text{
        max-width:160px;
      }

      h1{
        font-size:40px;
      }

      .hero-panel,
      .card,
      .feature-copy,
      .sticky-note,
      .faq-intro{
        border-radius:22px;
        padding:22px;
      }

      .topic-media{
        height:170px;
      }

      .feature-image,
      .feature-image img{
        min-height:320px;
      }

      .section-title{
        font-size:30px;
      }

      .footer-bottom{
        flex-direction:column;
      }
    }

/* roulang page: article */
:root{
      --bg:#f7f3ee;
      --bg-soft:#fffaf4;
      --surface:#ffffff;
      --surface-2:#fff6eb;
      --text:#201a17;
      --muted:#746760;
      --weak:#9b8e86;
      --primary:#9a4f2f;
      --primary-dark:#71361f;
      --primary-soft:#f1d8c9;
      --accent:#2f6b63;
      --accent-soft:#dcefeb;
      --warning:#b36b1d;
      --border:#eaded5;
      --shadow:0 18px 45px rgba(72,44,29,.12);
      --shadow-soft:0 10px 28px rgba(72,44,29,.08);
      --radius-lg:28px;
      --radius-md:18px;
      --radius-sm:12px;
      --container:1180px;
      --ease:all .25s ease;
    }
    html{
      scroll-behavior:smooth;
      text-size-adjust:100%;
    }
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      background:
        radial-gradient(circle at 8% 4%, rgba(154,79,47,.14), transparent 34%),
        radial-gradient(circle at 88% 10%, rgba(47,107,99,.12), transparent 34%),
        var(--bg);
      color:var(--text);
      line-height:1.72;
      font-size:16px;
      overflow-x:hidden;
    }
    *,*::before,*::after{box-sizing:border-box;}
    a{
      color:inherit;
      text-decoration:none;
    }
    a:hover{text-decoration:none;}
    img{
      max-width:100%;
      display:block;
    }
    button,
    input,
    textarea{
      font:inherit;
    }
    button{
      border:0;
      cursor:pointer;
    }
    ::selection{
      background:rgba(154,79,47,.18);
      color:var(--text);
    }
    .container{
      width:min(var(--container), calc(100% - 40px));
      margin:0 auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:100;
      background:rgba(247,243,238,.86);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(234,222,213,.75);
    }
    .nav-wrap{
      height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:850;
      letter-spacing:-.02em;
      color:var(--text);
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:16px;
      background:linear-gradient(135deg, var(--primary), var(--accent));
      display:grid;
      place-items:center;
      color:#fff;
      box-shadow:0 10px 24px rgba(154,79,47,.22);
      flex:0 0 auto;
    }
    .brand-mark svg{
      width:23px;
      height:23px;
    }
    .brand-text{
      font-size:18px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:8px;
    }
    .nav-links a{
      padding:10px 15px;
      border-radius:999px;
      color:var(--muted);
      font-weight:700;
      transition:var(--ease);
    }
    .nav-links a:hover,
    .nav-links a:focus{
      color:var(--primary-dark);
      background:rgba(154,79,47,.09);
      outline:none;
    }
    .nav-links a.active{
      color:#fff;
      background:var(--primary);
      box-shadow:0 10px 20px rgba(154,79,47,.18);
    }
    .nav-action{
      display:flex;
      align-items:center;
      gap:12px;
    }
    .menu-toggle{
      display:none;
    }
    .menu-btn{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      background:#fff;
      border:1px solid var(--border);
      align-items:center;
      justify-content:center;
      flex-direction:column;
      gap:5px;
      box-shadow:var(--shadow-soft);
    }
    .menu-btn span{
      width:20px;
      height:2px;
      background:var(--text);
      border-radius:999px;
      transition:var(--ease);
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      padding:12px 18px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:800;
      line-height:1;
      transition:var(--ease);
      white-space:nowrap;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg, var(--primary), var(--primary-dark));
      box-shadow:0 14px 28px rgba(154,79,47,.24);
    }
    .btn-primary:hover{
      color:#fff;
      transform:translateY(-2px);
      box-shadow:0 18px 36px rgba(154,79,47,.3);
    }
    .btn-secondary{
      background:#fff;
      color:var(--primary-dark);
      border-color:var(--border);
      box-shadow:var(--shadow-soft);
    }
    .btn-secondary:hover{
      transform:translateY(-2px);
      border-color:rgba(154,79,47,.35);
      box-shadow:0 16px 32px rgba(72,44,29,.12);
    }
    .btn-ghost{
      color:var(--accent);
      background:var(--accent-soft);
      border-color:rgba(47,107,99,.12);
    }
    .btn-ghost:hover{
      background:#cfe7e2;
      transform:translateY(-2px);
    }
    .btn:focus,
    .input:focus,
    .faq-item summary:focus,
    a:focus{
      outline:3px solid rgba(154,79,47,.22);
      outline-offset:3px;
    }

    .article-hero{
      position:relative;
      padding:34px 0 24px;
      overflow:hidden;
    }
    .article-hero::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg, rgba(32,26,23,.76), rgba(32,26,23,.34)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      z-index:-2;
    }
    .article-hero::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, rgba(247,243,238,.08), rgba(247,243,238,.84) 88%, var(--bg));
      z-index:-1;
    }
    .article-hero-inner{
      padding:36px 0 78px;
      display:grid;
      grid-template-columns:minmax(0, 1.1fr) minmax(310px, .78fr);
      gap:28px;
      align-items:end;
    }
    .crumbs{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
      font-size:14px;
      color:rgba(255,255,255,.82);
    }
    .crumbs a{
      color:rgba(255,255,255,.94);
    }
    .crumbs span{
      color:rgba(255,255,255,.58);
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.14);
      border:1px solid rgba(255,255,255,.24);
      color:#fff2e8;
      font-weight:800;
      font-size:14px;
      backdrop-filter:blur(10px);
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:#75d7bd;
      box-shadow:0 0 0 6px rgba(117,215,189,.16);
    }
    .article-title{
      margin:16px 0 14px;
      color:#fff;
      font-size:clamp(30px, 4vw, 56px);
      line-height:1.12;
      letter-spacing:-.03em;
      font-weight:900;
      max-width:880px;
    }
    .article-summary{
      margin:0;
      color:rgba(255,255,255,.88);
      font-size:18px;
      line-height:1.9;
      max-width:760px;
    }
    .article-meta{
      margin-top:24px;
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      align-items:center;
    }
    .meta-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:10px 14px;
      border-radius:999px;
      background:rgba(255,255,255,.12);
      color:#fff;
      border:1px solid rgba(255,255,255,.15);
      backdrop-filter:blur(10px);
      font-weight:700;
      font-size:14px;
    }
    .hero-side{
      align-self:stretch;
      background:linear-gradient(180deg, rgba(255,255,255,.12), rgba(255,255,255,.08));
      border:1px solid rgba(255,255,255,.18);
      border-radius:var(--radius-lg);
      padding:18px;
      backdrop-filter:blur(14px);
      box-shadow:0 18px 50px rgba(25,20,18,.16);
    }
    .hero-side img{
      width:100%;
      border-radius:22px;
      aspect-ratio: 16 / 12;
      object-fit:cover;
      box-shadow:0 16px 40px rgba(0,0,0,.18);
      margin-bottom:16px;
    }
    .hero-side h2{
      margin:0 0 8px;
      color:#fff;
      font-size:20px;
      line-height:1.35;
      font-weight:850;
    }
    .hero-side p{
      margin:0;
      color:rgba(255,255,255,.82);
      font-size:15px;
      line-height:1.8;
    }

    main{
      position:relative;
      margin-top:-28px;
    }
    .page-grid{
      display:grid;
      grid-template-columns:minmax(0, 1.45fr) minmax(300px, .65fr);
      gap:26px;
      align-items:start;
    }
    .content-card,
    .side-card,
    .support-card,
    .faq-item,
    .notice-card{
      background:var(--surface);
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-soft);
    }
    .content-card{
      padding:28px;
    }
    .content-card .article-body{
      font-size:16.5px;
      line-height:1.9;
      color:var(--text);
    }
    .content-card .article-body h2,
    .content-card .article-body h3{
      margin:34px 0 14px;
      line-height:1.28;
      letter-spacing:-.02em;
      color:var(--text);
    }
    .content-card .article-body h2{
      font-size:26px;
    }
    .content-card .article-body h3{
      font-size:20px;
    }
    .content-card .article-body p{
      margin:0 0 16px;
      color:var(--text);
    }
    .content-card .article-body img{
      margin:18px 0 22px;
      border-radius:22px;
      box-shadow:0 16px 36px rgba(72,44,29,.12);
      border:1px solid rgba(234,222,213,.8);
    }
    .content-card .article-body ul,
    .content-card .article-body ol{
      margin:0 0 18px;
      padding-left:1.25em;
    }
    .content-card .article-body li{
      margin:10px 0;
      color:var(--text);
    }
    .content-card .article-body blockquote{
      margin:22px 0;
      padding:18px 20px;
      background:var(--surface-2);
      border-left:4px solid var(--primary);
      border-radius:18px;
      color:var(--muted);
    }
    .content-card .article-body a{
      color:var(--primary-dark);
      text-decoration:underline;
      text-underline-offset:3px;
    }
    .content-card .article-body table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      overflow:hidden;
      border-radius:18px;
      border:1px solid var(--border);
      margin:18px 0 22px;
      background:#fff;
    }
    .content-card .article-body th,
    .content-card .article-body td{
      padding:14px 16px;
      border-bottom:1px solid var(--border);
      vertical-align:top;
      text-align:left;
    }
    .content-card .article-body th{
      background:var(--surface-2);
      color:var(--text);
    }
    .content-card .article-body tr:last-child td{
      border-bottom:0;
    }

    .content-head{
      display:flex;
      justify-content:space-between;
      align-items:flex-start;
      gap:16px;
      margin-bottom:18px;
      padding-bottom:18px;
      border-bottom:1px solid var(--border);
    }
    .content-head h2{
      margin:0;
      font-size:22px;
      line-height:1.35;
      font-weight:850;
    }
    .content-head p{
      margin:8px 0 0;
      color:var(--muted);
      font-size:14px;
    }
    .topic-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin:18px 0 22px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:8px 12px;
      border-radius:999px;
      background:var(--surface-2);
      color:var(--primary-dark);
      border:1px solid rgba(154,79,47,.12);
      font-weight:700;
      font-size:13px;
    }
    .tag.accent{
      background:var(--accent-soft);
      color:var(--accent);
      border-color:rgba(47,107,99,.12);
    }
    .tag.warning{
      background:#fff2e4;
      color:var(--warning);
      border-color:rgba(179,107,29,.14);
    }

    .article-grid{
      display:grid;
      gap:18px;
    }
    .side-card{
      padding:22px;
      position:sticky;
      top:100px;
    }
    .side-card h3{
      margin:0 0 12px;
      font-size:20px;
      line-height:1.35;
      font-weight:850;
    }
    .side-card p{
      margin:0;
      color:var(--muted);
      font-size:15px;
      line-height:1.8;
    }
    .side-list{
      margin:16px 0 0;
      padding:0;
      list-style:none;
      display:grid;
      gap:10px;
    }
    .side-list li{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:12px 14px;
      border-radius:16px;
      background:linear-gradient(180deg, #fff, #fff9f2);
      border:1px solid var(--border);
    }
    .side-list .dot{
      width:10px;
      height:10px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 0 6px rgba(154,79,47,.1);
      margin-top:6px;
      flex:0 0 auto;
    }
    .side-list strong{
      display:block;
      font-size:14px;
      margin-bottom:2px;
    }
    .side-list span{
      display:block;
      color:var(--muted);
      font-size:13px;
      line-height:1.7;
    }
    .side-cover{
      margin:18px 0 0;
      overflow:hidden;
      border-radius:22px;
      border:1px solid var(--border);
      box-shadow:var(--shadow-soft);
    }
    .side-cover img{
      width:100%;
      aspect-ratio: 4 / 3;
      object-fit:cover;
    }

    .notice-card{
      padding:18px 20px;
      background:linear-gradient(180deg, #fff, #fff8f1);
      margin-top:18px;
    }
    .notice-card strong{
      display:block;
      margin-bottom:6px;
      font-size:16px;
      color:var(--primary-dark);
    }
    .notice-card p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.8;
    }
    .section-block{
      margin-top:26px;
    }
    .section-title{
      display:flex;
      justify-content:space-between;
      align-items:end;
      gap:16px;
      margin-bottom:16px;
    }
    .section-title h2{
      margin:0;
      font-size:24px;
      font-weight:850;
      letter-spacing:-.02em;
    }
    .section-title p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }

    .card-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0, 1fr));
      gap:18px;
    }
    .mini-card{
      background:var(--surface);
      border:1px solid var(--border);
      border-radius:24px;
      overflow:hidden;
      box-shadow:var(--shadow-soft);
      transition:var(--ease);
      min-height:100%;
    }
    .mini-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow);
    }
    .mini-card img{
      width:100%;
      aspect-ratio: 16 / 10;
      object-fit:cover;
    }
    .mini-card .pad{
      padding:18px;
    }
    .mini-card .kicker{
      display:inline-flex;
      margin-bottom:10px;
      padding:6px 10px;
      border-radius:999px;
      background:var(--surface-2);
      color:var(--primary-dark);
      font-size:12px;
      font-weight:800;
    }
    .mini-card h3{
      margin:0 0 10px;
      font-size:18px;
      line-height:1.4;
      font-weight:850;
    }
    .mini-card p{
      margin:0 0 14px;
      color:var(--muted);
      font-size:14px;
      line-height:1.8;
    }
    .card-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--primary-dark);
      font-weight:800;
      font-size:14px;
      transition:var(--ease);
    }
    .card-link:hover{
      gap:11px;
    }

    .stats-row{
      display:grid;
      grid-template-columns:repeat(4, minmax(0, 1fr));
      gap:14px;
    }
    .stat{
      background:linear-gradient(180deg, #fff, #fff9f4);
      border:1px solid var(--border);
      border-radius:22px;
      padding:18px;
      box-shadow:var(--shadow-soft);
    }
    .stat .num{
      font-size:28px;
      font-weight:900;
      line-height:1;
      color:var(--primary-dark);
      margin-bottom:8px;
      letter-spacing:-.03em;
    }
    .stat .txt{
      color:var(--muted);
      font-size:14px;
      line-height:1.7;
    }

    .faq-list{
      display:grid;
      gap:12px;
    }
    .faq-item{
      overflow:hidden;
      background:#fff;
    }
    .faq-item summary{
      list-style:none;
      padding:18px 20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      cursor:pointer;
      font-weight:800;
      color:var(--text);
    }
    .faq-item summary::-webkit-details-marker{display:none;}
    .faq-item summary::after{
      content:"+";
      width:34px;
      height:34px;
      border-radius:50%;
      display:grid;
      place-items:center;
      flex:0 0 auto;
      background:var(--surface-2);
      color:var(--primary-dark);
      font-size:20px;
      transition:var(--ease);
    }
    .faq-item[open] summary::after{
      content:"–";
      background:var(--primary-soft);
      color:var(--primary-dark);
    }
    .faq-answer{
      padding:0 20px 18px;
      color:var(--muted);
      line-height:1.9;
      border-top:1px solid var(--border);
    }

    .cta-box{
      margin:30px 0 0;
      background:
        linear-gradient(135deg, rgba(154,79,47,.96), rgba(113,54,31,.98)),
        url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
      border-radius:34px;
      overflow:hidden;
      color:#fff;
      box-shadow:0 20px 50px rgba(113,54,31,.2);
      position:relative;
    }
    .cta-box::before{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(90deg, rgba(37,24,19,.1), rgba(37,24,19,.5));
      pointer-events:none;
    }
    .cta-inner{
      position:relative;
      z-index:1;
      padding:34px;
      display:grid;
      grid-template-columns:minmax(0, 1fr) auto;
      gap:20px;
      align-items:center;
    }
    .cta-inner h2{
      margin:0 0 10px;
      font-size:30px;
      line-height:1.2;
      font-weight:900;
      letter-spacing:-.03em;
    }
    .cta-inner p{
      margin:0;
      max-width:740px;
      color:rgba(255,255,255,.88);
      line-height:1.85;
      font-size:16px;
    }
    .cta-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      justify-content:flex-end;
      align-items:center;
    }
    .cta-actions .btn-secondary{
      background:rgba(255,255,255,.1);
      color:#fff;
      border-color:rgba(255,255,255,.22);
      box-shadow:none;
      backdrop-filter:blur(10px);
    }
    .cta-actions .btn-secondary:hover{
      border-color:rgba(255,255,255,.34);
      background:rgba(255,255,255,.14);
    }

    .site-footer{
      margin-top:34px;
      padding:42px 0 22px;
      background:linear-gradient(180deg, rgba(255,250,244,.66), rgba(247,243,238,1));
      border-top:1px solid rgba(234,222,213,.9);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:minmax(0, 1.45fr) repeat(2, minmax(0, .72fr));
      gap:26px;
      align-items:start;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      font-weight:850;
      font-size:18px;
      letter-spacing:-.02em;
      margin-bottom:14px;
    }
    .footer-text{
      color:var(--muted);
      line-height:1.9;
      margin:0;
      max-width:520px;
      font-size:14px;
    }
    .footer-col h3{
      margin:2px 0 14px;
      font-size:16px;
      font-weight:850;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:var(--muted);
      font-size:14px;
      transition:var(--ease);
    }
    .footer-links a:hover{
      color:var(--primary-dark);
      transform:translateX(2px);
    }
    .footer-bottom{
      margin-top:28px;
      padding-top:18px;
      border-top:1px solid var(--border);
      display:flex;
      justify-content:space-between;
      gap:14px;
      flex-wrap:wrap;
      color:var(--weak);
      font-size:13px;
      line-height:1.7;
    }

    .search-box{
      margin-top:18px;
      background:#fff;
      border:1px solid var(--border);
      border-radius:22px;
      padding:14px;
      box-shadow:var(--shadow-soft);
    }
    .search-box form{
      display:flex;
      gap:10px;
      align-items:center;
    }
    .search-box input{
      flex:1;
      min-width:0;
      border:1px solid var(--border);
      background:var(--bg-soft);
      color:var(--text);
      border-radius:16px;
      padding:12px 14px;
      outline:none;
      transition:var(--ease);
    }
    .search-box input::placeholder{
      color:#9c8f86;
    }
    .search-box input:focus{
      border-color:rgba(154,79,47,.34);
      box-shadow:0 0 0 4px rgba(154,79,47,.08);
      background:#fff;
    }

    .empty-state{
      padding:54px 24px;
      text-align:center;
    }
    .empty-state h2{
      margin:0 0 12px;
      font-size:28px;
      font-weight:900;
      letter-spacing:-.02em;
    }
    .empty-state p{
      margin:0 auto 20px;
      max-width:640px;
      color:var(--muted);
      line-height:1.9;
    }

    @media (max-width: 1024px){
      .article-hero-inner,
      .page-grid,
      .footer-grid,
      .cta-inner{
        grid-template-columns:1fr;
      }
      .side-card{
        position:relative;
        top:auto;
      }
      .card-grid,
      .stats-row{
        grid-template-columns:repeat(2, minmax(0, 1fr));
      }
      .hero-side{
        max-width:720px;
      }
    }
    @media (max-width: 768px){
      .nav-wrap{
        height:auto;
        min-height:72px;
        padding:12px 0;
        flex-wrap:wrap;
      }
      .nav-links{
        width:100%;
        order:3;
        padding-top:8px;
        flex-wrap:wrap;
      }
      .brand-text{
        font-size:17px;
      }
      .article-hero{
        padding-top:24px;
      }
      .article-hero-inner{
        padding:18px 0 56px;
      }
      .article-title{
        font-size:clamp(28px, 7vw, 44px);
      }
      .article-summary{
        font-size:16px;
      }
      .content-card,
      .side-card,
      .notice-card{
        padding:20px;
      }
      .content-head{
        flex-direction:column;
      }
      .section-title{
        flex-direction:column;
        align-items:flex-start;
      }
      .card-grid,
      .stats-row{
        grid-template-columns:1fr;
      }
      .cta-inner{
        padding:24px;
      }
      .cta-inner h2{
        font-size:24px;
      }
    }
    @media (max-width: 520px){
      .container{
        width:min(var(--container), calc(100% - 28px));
      }
      .nav-links a{
        padding:9px 12px;
      }
      .brand-mark{
        width:40px;
        height:40px;
        border-radius:14px;
      }
      .hero-side{
        padding:14px;
      }
      .meta-pill{
        font-size:13px;
        padding:9px 12px;
      }
      .content-card .article-body{
        font-size:16px;
      }
      .content-card .article-body h2{
        font-size:22px;
      }
      .content-card .article-body h3{
        font-size:18px;
      }
      .faq-item summary{
        padding:16px 16px;
      }
      .faq-answer{
        padding:0 16px 16px;
      }
      .footer-bottom{
        flex-direction:column;
      }
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}