/* roulang page: index */
:root{
      --bg: #120f0e;
      --bg-soft: #171211;
      --panel: rgba(25, 20, 18, .86);
      --panel-strong: rgba(34, 27, 24, .94);
      --line: rgba(255,255,255,.08);
      --line-strong: rgba(197, 162, 104, .28);
      --text: #f6efe7;
      --muted: #b7a79a;
      --muted-2: #89796d;
      --accent: #8f403b;
      --accent-2: #c6a368;
      --accent-3: #e9dcc2;
      --shadow: 0 24px 60px rgba(0,0,0,.34);
      --shadow-soft: 0 16px 36px rgba(0,0,0,.22);
      --radius: 22px;
      --radius-sm: 16px;
      --radius-lg: 30px;
      --container: 1220px;
      --space: clamp(18px, 2vw, 28px);
      --transition: 220ms cubic-bezier(.2,.75,.2,1);
    }

    *, *::before, *::after { box-sizing: border-box; }
    html {
      scroll-behavior: smooth;
      background: var(--bg);
    }
    body {
      margin: 0;
      min-height: 100vh;
      color: var(--text);
      background:
        radial-gradient(1200px 800px at 12% 0%, rgba(143, 64, 59, .16), transparent 60%),
        radial-gradient(900px 600px at 88% 12%, rgba(198, 163, 104, .11), transparent 56%),
        linear-gradient(180deg, #13100f 0%, #100d0c 45%, #0d0b0a 100%);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;
      line-height: 1.75;
      overflow-x: hidden;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
      font-variant-numeric: tabular-nums;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      z-index:0;
      background:
        repeating-linear-gradient(0deg, rgba(255,255,255,.012) 0 1px, transparent 1px 4px),
        radial-gradient(circle at 20% 20%, rgba(255,255,255,.02), transparent 24%),
        radial-gradient(circle at 80% 10%, rgba(255,255,255,.015), transparent 18%);
      mix-blend-mode: screen;
      opacity:.75;
    }
    img {
      max-width: 100%;
      display: block;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--transition), opacity var(--transition), transform var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition);
    }
    button, input, textarea, select {
      font: inherit;
    }
    button {
      cursor: pointer;
    }
    ::selection {
      background: rgba(198, 163, 104, .32);
      color: var(--text);
    }
    :focus-visible {
      outline: 2px solid rgba(198, 163, 104, .92);
      outline-offset: 3px;
    }

    .container {
      width: min(var(--container), calc(100% - (var(--space) * 2)));
      margin: 0 auto;
      position: relative;
      z-index: 1;
    }

    .site-header{
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      background: rgba(13, 11, 10, .66);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid transparent;
      transition: background-color var(--transition), border-color var(--transition), box-shadow var(--transition);
    }
    .site-header.scrolled{
      background: rgba(13, 11, 10, .92);
      border-bottom-color: var(--line);
      box-shadow: 0 10px 30px rgba(0,0,0,.22);
    }
    .header-inner{
      min-height: 80px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }
    .brand{
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
      font-weight: 800;
      letter-spacing: .01em;
      flex: 0 0 auto;
    }
    .brand-mark{
      width: 40px;
      height: 40px;
      border-radius: 14px;
      background:
        radial-gradient(circle at 30% 28%, rgba(255,255,255,.24), transparent 28%),
        linear-gradient(145deg, #77302e 0%, #9b4742 52%, #c6a368 100%);
      box-shadow: 0 16px 26px rgba(0,0,0,.28), inset 0 1px 0 rgba(255,255,255,.18);
      position: relative;
      flex: 0 0 auto;
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      inset: 11px;
      border-radius: 10px;
      border: 1px solid rgba(255,255,255,.24);
    }
    .brand-name{
      font-size: 1rem;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      max-width: 48vw;
    }

    .site-nav{
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .site-nav a{
      padding: 10px 14px;
      border-radius: 999px;
      border: 1px solid transparent;
      color: var(--muted);
      line-height: 1;
      font-size: .95rem;
      background: transparent;
    }
    .site-nav a:hover{
      color: var(--text);
      border-color: rgba(255,255,255,.09);
      background: rgba(255,255,255,.04);
      transform: translateY(-1px);
    }
    .site-nav a.active{
      color: var(--text);
      background: rgba(255,255,255,.06);
      border-color: rgba(198,163,104,.24);
    }
    .site-nav .nav-cta{
      color: #fff;
      background: linear-gradient(145deg, rgba(143,64,59,.96), rgba(179,87,79,.9));
      border-color: rgba(255,255,255,.08);
      box-shadow: 0 12px 26px rgba(143,64,59,.22);
    }
    .site-nav .nav-cta:hover{
      background: linear-gradient(145deg, rgba(155,72,66,.98), rgba(195,98,90,.92));
      box-shadow: 0 18px 34px rgba(143,64,59,.28);
    }

    .nav-toggle{
      display: none;
      width: 46px;
      height: 46px;
      border-radius: 14px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,.04);
      color: var(--text);
      align-items: center;
      justify-content: center;
      gap: 4px;
      padding: 0;
      flex-direction: column;
      box-shadow: var(--shadow-soft);
    }
    .nav-toggle span{
      width: 18px;
      height: 2px;
      border-radius: 999px;
      background: currentColor;
      display: block;
      transition: transform var(--transition), opacity var(--transition);
    }

    main{
      position: relative;
      z-index: 1;
      padding-top: 90px;
    }
    .section{
      padding: clamp(58px, 7vw, 96px) 0;
      position: relative;
      scroll-margin-top: 104px;
    }
    .section-title{
      margin-bottom: 24px;
      max-width: 900px;
    }
    .section-title .kicker{
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--accent-2);
      font-size: .88rem;
      letter-spacing: .06em;
      font-weight: 700;
      margin-bottom: 10px;
    }
    .section-title .kicker::before{
      content:"";
      width: 28px;
      height: 1px;
      background: linear-gradient(90deg, rgba(198,163,104,.15), rgba(198,163,104,.95));
    }
    .section-title h2{
      margin: 0 0 10px;
      font-size: clamp(26px, 3vw, 40px);
      line-height: 1.15;
      letter-spacing: -.03em;
    }
    .section-title p{
      margin: 0;
      color: var(--muted);
      max-width: 72ch;
      font-size: 1rem;
    }

    .hero{
      padding-top: 24px;
      padding-bottom: 36px;
      overflow: clip;
    }
    .hero-shell{
      position: relative;
      border-radius: 34px;
      overflow: hidden;
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      background: #0f0d0c;
    }
    .hero-bg{
      position: absolute;
      inset: 0;
      z-index: 0;
    }
    .hero-bg img{
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center;
      filter: brightness(.28) saturate(.9) contrast(1.05);
      transform: scale(1.03);
    }
    .hero-shell::after{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg, rgba(12,10,10,.86) 0%, rgba(12,10,10,.74) 40%, rgba(12,10,10,.48) 100%),
        linear-gradient(180deg, rgba(12,10,10,.08) 0%, rgba(12,10,10,.82) 100%);
      z-index: 1;
    }
    .hero-grid{
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(300px, .95fr);
      gap: 22px;
      padding: clamp(22px, 4vw, 42px);
      align-items: end;
    }
    .hero-copy{
      padding: clamp(10px, 1vw, 6px) 0 8px;
    }
    .hero-copy .eyebrow{
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--accent-3);
      font-size: .9rem;
      letter-spacing: .04em;
      padding: 8px 14px;
      border-radius: 999px;
      background: rgba(255,255,255,.05);
      border: 1px solid rgba(255,255,255,.08);
      backdrop-filter: blur(8px);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
    }
    .hero-copy h1{
      margin: 18px 0 16px;
      font-size: clamp(42px, 6.8vw, 76px);
      line-height: .98;
      letter-spacing: -.05em;
    }
    .hero-copy p{
      margin: 0;
      color: rgba(246, 239, 231, .82);
      max-width: 46rem;
      font-size: 1.06rem;
    }
    .hero-actions{
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 28px;
    }
    .btn{
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      min-height: 48px;
      padding: 0 18px;
      border-radius: 14px;
      border: 1px solid transparent;
      font-weight: 700;
      letter-spacing: .01em;
      transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition), color var(--transition), opacity var(--transition);
      user-select: none;
    }
    .btn:hover{
      transform: translateY(-2px);
    }
    .btn-primary{
      color: #fff;
      background: linear-gradient(145deg, rgba(143,64,59,1), rgba(177,84,77,.96));
      box-shadow: 0 18px 32px rgba(143,64,59,.24);
    }
    .btn-primary:hover{
      box-shadow: 0 22px 38px rgba(143,64,59,.32);
    }
    .btn-secondary{
      color: var(--text);
      background: rgba(255,255,255,.04);
      border-color: rgba(255,255,255,.12);
    }
    .btn-secondary:hover{
      border-color: rgba(198,163,104,.28);
      background: rgba(255,255,255,.06);
    }
    .hero-chips{
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 22px;
    }
    .hero-chips span{
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(255,255,255,.05);
      border: 1px solid rgba(255,255,255,.08);
      color: var(--muted);
      font-size: .92rem;
      backdrop-filter: blur(6px);
    }
    .hero-chips span::before{
      content:"";
      width: 7px;
      height: 7px;
      border-radius: 999px;
      background: var(--accent-2);
      box-shadow: 0 0 0 3px rgba(198,163,104,.12);
    }

    .hero-visual{
      display: grid;
      gap: 16px;
      align-self: stretch;
    }
    .hero-card{
      position: relative;
      border-radius: 26px;
      overflow: hidden;
      border: 1px solid var(--line);
      background: var(--panel);
      box-shadow: var(--shadow-soft);
    }
    .hero-card.hero-image{
      min-height: 372px;
    }
    .hero-card img{
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center;
      filter: brightness(.8) saturate(.92);
    }
    .hero-card .overlay{
      position: absolute;
      inset: auto 16px 16px 16px;
      padding: 14px 16px;
      border-radius: 18px;
      background: rgba(14, 11, 10, .62);
      border: 1px solid rgba(255,255,255,.08);
      backdrop-filter: blur(10px);
    }
    .hero-card .overlay strong{
      display: block;
      font-size: 1.02rem;
      margin-bottom: 4px;
    }
    .hero-card .overlay span{
      color: var(--muted);
      font-size: .92rem;
    }
    .hero-stack{
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
    }
    .mini-card{
      padding: 18px 18px 16px;
      border-radius: 22px;
      border: 1px solid var(--line);
      background:
        linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03)),
        var(--panel);
      box-shadow: var(--shadow-soft);
      min-height: 140px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 14px;
    }
    .mini-card strong{
      font-size: 1.28rem;
      line-height: 1.05;
      display: block;
      margin-bottom: 8px;
    }
    .mini-card p{
      margin: 0;
      color: var(--muted);
      font-size: .95rem;
      line-height: 1.65;
    }
    .mini-card .mini-tag{
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--accent-2);
      font-size: .88rem;
      font-weight: 700;
    }
    .mini-card .mini-tag::before{
      content:"";
      width: 10px;
      height: 10px;
      border-radius: 999px;
      border: 1px solid rgba(198,163,104,.54);
      box-shadow: inset 0 0 0 3px rgba(198,163,104,.12);
    }

    .feature-grid{
      display: grid;
      grid-template-columns: repeat(12, minmax(0, 1fr));
      gap: 16px;
    }
    .feature-card{
      grid-column: span 3;
      padding: 22px;
      border-radius: 24px;
      border: 1px solid var(--line);
      background:
        linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.025)),
        var(--panel);
      box-shadow: var(--shadow-soft);
      transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition), background-color var(--transition);
      min-height: 186px;
    }
    .feature-card:hover{
      transform: translateY(-4px);
      border-color: rgba(198,163,104,.22);
      box-shadow: 0 24px 48px rgba(0,0,0,.26);
      background:
        linear-gradient(180deg, rgba(255,255,255,.065), rgba(255,255,255,.03)),
        var(--panel-strong);
    }
    .feature-card.feature-card-large{
      grid-column: span 5;
    }
    .feature-card.feature-card-wide{
      grid-column: span 4;
    }
    .feature-icon{
      width: 46px;
      height: 46px;
      border-radius: 16px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: rgba(198,163,104,.08);
      border: 1px solid rgba(198,163,104,.18);
      color: var(--accent-2);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.05);
    }
    .feature-icon svg{
      width: 22px;
      height: 22px;
      fill: none;
      stroke: currentColor;
      stroke-width: 1.8;
      stroke-linecap: round;
      stroke-linejoin: round;
    }
    .feature-card h3{
      margin: 16px 0 10px;
      font-size: 1.12rem;
      line-height: 1.35;
    }
    .feature-card p{
      margin: 0;
      color: var(--muted);
      line-height: 1.7;
      font-size: .98rem;
    }
    .feature-foot{
      margin-top: 16px;
      color: var(--accent-3);
      font-size: .92rem;
      font-weight: 700;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    .showcase{
      display: grid;
      grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
      gap: 16px;
      align-items: stretch;
    }
    .showcase-main,
    .showcase-side-card{
      position: relative;
      overflow: hidden;
      border-radius: 26px;
      border: 1px solid var(--line);
      background: var(--panel);
      box-shadow: var(--shadow-soft);
      min-height: 100%;
    }
    .showcase-main{
      min-height: 500px;
    }
    .showcase-main img,
    .showcase-side-card img{
      width: 100%;
      height: 100%;
      object-fit: cover;
      object-position: center;
      filter: brightness(.8) saturate(.92);
    }
    .showcase-main::after,
    .showcase-side-card::after{
      content:"";
      position:absolute;
      inset:0;
      background: linear-gradient(180deg, rgba(13,10,10,.08) 0%, rgba(13,10,10,.78) 100%);
      pointer-events:none;
    }
    .showcase-body{
      position: absolute;
      inset: auto 18px 18px 18px;
      z-index: 1;
      padding: 18px;
      border-radius: 20px;
      background: rgba(15, 12, 11, .62);
      border: 1px solid rgba(255,255,255,.09);
      backdrop-filter: blur(10px);
    }
    .badge{
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 11px;
      border-radius: 999px;
      background: rgba(198,163,104,.08);
      border: 1px solid rgba(198,163,104,.18);
      color: var(--accent-3);
      font-size: .84rem;
      font-weight: 700;
      line-height: 1;
    }
    .showcase-body h3{
      margin: 14px 0 8px;
      font-size: clamp(1.3rem, 1.8vw, 2rem);
      line-height: 1.15;
      letter-spacing: -.03em;
    }
    .showcase-body p{
      margin: 0;
      color: rgba(246, 239, 231, .8);
      max-width: 42ch;
      font-size: .96rem;
    }
    .showcase-link{
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-top: 16px;
      color: var(--accent-2);
      font-weight: 700;
      font-size: .95rem;
    }
    .showcase-link span{
      transform: translateY(-1px);
    }
    .showcase-side{
      display: grid;
      gap: 16px;
    }
    .showcase-side-card{
      min-height: 242px;
    }
    .showcase-side-card .showcase-body{
      padding: 16px;
    }
    .showcase-side-card h3{
      margin-top: 12px;
      font-size: 1.18rem;
    }

    .news-list{
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
    }
    .news-card{
      display: flex;
      flex-direction: column;
      gap: 14px;
      padding: 22px;
      min-height: 214px;
      border-radius: 24px;
      border: 1px solid var(--line);
      background:
        linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.03)),
        var(--panel);
      box-shadow: var(--shadow-soft);
      transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition), background-color var(--transition);
    }
    .news-card:hover{
      transform: translateY(-4px);
      border-color: rgba(198,163,104,.22);
      background:
        linear-gradient(180deg, rgba(255,255,255,.065), rgba(255,255,255,.03)),
        var(--panel-strong);
      box-shadow: 0 24px 44px rgba(0,0,0,.27);
    }
    .news-head{
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
    }
    .news-badge{
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 11px;
      border-radius: 999px;
      border: 1px solid rgba(198,163,104,.18);
      background: rgba(198,163,104,.06);
      color: var(--accent-3);
      font-size: .84rem;
      font-weight: 700;
      line-height: 1;
    }
    .news-time{
      color: var(--muted-2);
      font-size: .88rem;
      white-space: nowrap;
    }
    .news-card h3{
      margin: 0;
      font-size: 1.14rem;
      line-height: 1.45;
      letter-spacing: -.02em;
    }
    .news-card p{
      margin: 0;
      color: var(--muted);
      line-height: 1.7;
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
      min-height: 5.2em;
    }
    .news-foot{
      margin-top: auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      color: var(--accent-2);
      font-weight: 700;
      font-size: .95rem;
    }
    .news-foot .arrow{
      transition: transform var(--transition);
    }
    .news-card:hover .news-foot .arrow{
      transform: translateX(2px);
    }
    .empty-state{
      grid-column: 1 / -1;
      padding: 26px;
      border-radius: 24px;
      border: 1px dashed rgba(198,163,104,.26);
      background: rgba(255,255,255,.03);
      color: var(--muted);
      text-align: center;
    }
    .empty-state p{
      margin: 0 0 14px;
    }

    .faq-grid{
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
    }
    details.faq-item{
      border-radius: 22px;
      border: 1px solid var(--line);
      background:
        linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.025)),
        var(--panel);
      box-shadow: var(--shadow-soft);
      overflow: hidden;
      transition: border-color var(--transition), background-color var(--transition), transform var(--transition);
    }
    details.faq-item:hover{
      border-color: rgba(198,163,104,.2);
      transform: translateY(-2px);
    }
    details.faq-item[open]{
      background:
        linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03)),
        var(--panel-strong);
      border-color: rgba(198,163,104,.22);
    }
    details.faq-item summary{
      list-style: none;
      cursor: pointer;
      padding: 20px 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      font-weight: 700;
      line-height: 1.45;
    }
    details.faq-item summary::-webkit-details-marker{
      display: none;
    }
    .faq-question{
      font-size: 1rem;
    }
    .faq-toggle{
      width: 34px;
      height: 34px;
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: rgba(255,255,255,.04);
      border: 1px solid rgba(255,255,255,.08);
      color: var(--accent-2);
      flex: 0 0 auto;
      transition: transform var(--transition), background-color var(--transition), border-color var(--transition);
    }
    details[open] .faq-toggle{
      transform: rotate(45deg);
      background: rgba(198,163,104,.08);
      border-color: rgba(198,163,104,.18);
    }
    .faq-content{
      padding: 0 22px 22px;
      color: var(--muted);
    }
    .faq-content p{
      margin: 0;
    }

    .cta{
      padding-top: 12px;
    }
    .cta-box{
      position: relative;
      overflow: hidden;
      border-radius: 30px;
      border: 1px solid rgba(255,255,255,.08);
      background:
        radial-gradient(1200px 420px at 14% 20%, rgba(255,255,255,.08), transparent 45%),
        linear-gradient(135deg, rgba(125, 48, 45, .98), rgba(29, 24, 22, .98));
      box-shadow: var(--shadow);
    }
    .cta-box::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(120deg, rgba(255,255,255,.03), transparent 45%),
        radial-gradient(circle at 84% 20%, rgba(198,163,104,.11), transparent 18%);
      pointer-events:none;
    }
    .cta-inner{
      position: relative;
      z-index: 1;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      padding: clamp(26px, 4vw, 42px);
    }
    .cta-copy{
      max-width: 720px;
    }
    .cta-copy h2{
      margin: 0;
      font-size: clamp(28px, 4vw, 44px);
      line-height: 1.08;
      letter-spacing: -.04em;
    }
    .cta-copy p{
      margin: 12px 0 0;
      color: rgba(255,255,255,.82);
      max-width: 60ch;
    }
    .cta-actions{
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      flex: 0 0 auto;
    }
    .btn-light{
      color: #1f1815;
      background: linear-gradient(145deg, rgba(243, 230, 210, 1), rgba(226, 204, 173, .98));
      box-shadow: 0 18px 34px rgba(0,0,0,.18);
    }
    .btn-light:hover{
      box-shadow: 0 22px 40px rgba(0,0,0,.22);
    }
    .btn-outline-light{
      color: #fff;
      background: rgba(255,255,255,.06);
      border-color: rgba(255,255,255,.16);
    }
    .btn-outline-light:hover{
      background: rgba(255,255,255,.08);
      border-color: rgba(255,255,255,.24);
    }

    .site-footer{
      padding: 34px 0 42px;
      border-top: 1px solid var(--line);
      background: rgba(8, 7, 7, .56);
      margin-top: 10px;
    }
    .footer-grid{
      display: grid;
      grid-template-columns: minmax(0, 1.2fr) minmax(180px, .8fr) minmax(220px, .9fr);
      gap: 20px;
      align-items: start;
    }
    .footer-brand{
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      margin-bottom: 12px;
      font-size: 1.05rem;
    }
    .footer-note{
      margin: 0;
      color: var(--muted);
      max-width: 48ch;
    }
    .footer-title{
      color: var(--accent-2);
      margin: 0 0 12px;
      font-size: .94rem;
      letter-spacing: .03em;
    }
    .footer-links{
      display: grid;
      gap: 10px;
    }
    .footer-links a{
      color: var(--muted);
      width: fit-content;
    }
    .footer-links a:hover{
      color: var(--text);
      transform: translateX(2px);
    }
    .footer-meta{
      margin-top: 20px;
      padding-top: 18px;
      border-top: 1px solid var(--line);
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      color: var(--muted-2);
      font-size: .92rem;
    }

    .skip-anchor{
      position: absolute;
      left: -9999px;
      top: auto;
      width: 1px;
      height: 1px;
      overflow: hidden;
    }

    @media (max-width: 1100px){
      .hero-grid,
      .showcase,
      .footer-grid{
        grid-template-columns: 1fr;
      }
      .feature-card{
        grid-column: span 6;
      }
      .feature-card.feature-card-large,
      .feature-card.feature-card-wide{
        grid-column: span 6;
      }
      .hero-shell{
        border-radius: 28px;
      }
      .hero-card.hero-image{
        min-height: 330px;
      }
    }

    @media (max-width: 860px){
      .feature-grid{
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
      .feature-card,
      .feature-card.feature-card-large,
      .feature-card.feature-card-wide{
        grid-column: span 1;
      }
      .news-list,
      .faq-grid{
        grid-template-columns: 1fr;
      }
      .cta-inner{
        flex-direction: column;
        align-items: flex-start;
      }
      .cta-actions{
        width: 100%;
      }
      .cta-actions .btn{
        flex: 1 1 220px;
      }
    }

    @media (max-width: 768px){
      main{
        padding-top: 78px;
      }
      .header-inner{
        min-height: 72px;
      }
      .nav-toggle{
        display: inline-flex;
      }
      .site-nav{
        position: absolute;
        top: calc(100% + 12px);
        left: 0;
        right: 0;
        display: grid;
        gap: 8px;
        padding: 14px;
        background: rgba(12, 10, 9, .96);
        border: 1px solid rgba(255,255,255,.08);
        border-radius: 20px;
        box-shadow: var(--shadow);
        transform: translateY(-8px);
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--transition), transform var(--transition);
      }
      body.nav-open .site-nav{
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
      }
      .site-nav a{
        width: 100%;
        justify-content: center;
        padding: 13px 14px;
      }
      .hero{
        padding-top: 16px;
      }
      .hero-copy h1{
        font-size: clamp(34px, 11vw, 54px);
      }
      .hero-actions{
        flex-direction: column;
      }
      .hero-actions .btn{
        width: 100%;
      }
      .hero-stack{
        grid-template-columns: 1fr;
      }
      .hero-card.hero-image{
        min-height: 280px;
      }
      .showcase-main{
        min-height: 420px;
      }
    }

    @media (max-width: 560px){
      .container{
        width: min(calc(100% - 24px), var(--container));
      }
      .section{
        padding: 46px 0;
      }
      .hero-grid{
        padding: 18px;
        gap: 16px;
      }
      .hero-copy,
      .hero-card,
      .mini-card,
      .feature-card,
      .showcase-main,
      .showcase-side-card,
      .news-card,
      details.faq-item,
      .cta-box{
        border-radius: 20px;
      }
      .feature-grid{
        grid-template-columns: 1fr;
      }
      .feature-card{
        min-height: auto;
      }
      .news-card{
        min-height: auto;
      }
      .btn{
        width: 100%;
      }
      .footer-meta{
        flex-direction: column;
      }
    }

/* roulang page: article */
:root{
      --bg:#120f0e;
      --bg-soft:#171211;
      --panel:rgba(25,20,18,.86);
      --panel-strong:rgba(34,27,24,.94);
      --line:rgba(255,255,255,.08);
      --line-strong:rgba(197,162,104,.28);
      --text:#f6efe7;
      --muted:#b7a79a;
      --muted-2:#89796d;
      --accent:#8f403b;
      --accent-2:#c6a368;
      --accent-3:#e9dcc2;
      --shadow:0 24px 60px rgba(0,0,0,.34);
      --shadow-soft:0 16px 36px rgba(0,0,0,.22);
      --radius:22px;
      --radius-sm:16px;
      --radius-lg:30px;
      --container:1220px;
      --space:clamp(18px, 2vw, 28px);
      --transition:220ms cubic-bezier(.2,.75,.2,1);
    }
    html{
      scroll-behavior:smooth;
      background:var(--bg);
    }
    *,*::before,*::after{
      box-sizing:border-box;
    }
    body{
      margin:0;
      min-height:100vh;
      color:var(--text);
      background:
        radial-gradient(1200px 800px at 12% 0%, rgba(143, 64, 59, .16), transparent 60%),
        radial-gradient(900px 600px at 88% 12%, rgba(198, 163, 104, .11), transparent 56%),
        linear-gradient(180deg, #13100f 0%, #100d0c 45%, #0d0b0a 100%);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",sans-serif;
      line-height:1.75;
      overflow-x:hidden;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
      font-variant-numeric:tabular-nums;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      z-index:0;
      background:
        repeating-linear-gradient(0deg, rgba(255,255,255,.012) 0 1px, transparent 1px 4px),
        radial-gradient(circle at 20% 20%, rgba(255,255,255,.02), transparent 24%),
        radial-gradient(circle at 80% 10%, rgba(255,255,255,.015), transparent 18%);
      mix-blend-mode:screen;
      opacity:.75;
    }
    img{
      max-width:100%;
      display:block;
    }
    a{
      color:inherit;
      text-decoration:none;
      transition:color var(--transition), opacity var(--transition), transform var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition);
    }
    a:hover{
      color:inherit;
    }
    button,input,textarea,select{
      font:inherit;
    }
    button{
      cursor:pointer;
    }
    :focus-visible{
      outline:2px solid rgba(198,163,104,.8);
      outline-offset:3px;
    }
    .container{
      width:min(var(--container), calc(100% - (var(--space) * 2)));
      margin:0 auto;
      position:relative;
      z-index:1;
    }

    .site-header{
      position:fixed;
      top:0;
      left:0;
      right:0;
      z-index:1000;
      background:rgba(13,11,10,.66);
      backdrop-filter:blur(16px);
      border-bottom:1px solid transparent;
      transition:background-color var(--transition), border-color var(--transition), box-shadow var(--transition);
    }
    .site-header.scrolled{
      background:rgba(13,11,10,.92);
      border-bottom-color:var(--line);
      box-shadow:0 10px 30px rgba(0,0,0,.22);
    }
    .header-inner{
      min-height:80px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:800;
      letter-spacing:.01em;
      flex:0 0 auto;
    }
    .brand-mark{
      width:40px;
      height:40px;
      border-radius:14px;
      background:
        radial-gradient(circle at 30% 28%, rgba(255,255,255,.24), transparent 28%),
        linear-gradient(145deg, #77302e 0%, #9b4742 52%, #c6a368 100%);
      box-shadow:0 16px 26px rgba(0,0,0,.28), inset 0 1px 0 rgba(255,255,255,.18);
      position:relative;
      flex:0 0 auto;
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      inset:11px;
      border-radius:10px;
      border:1px solid rgba(255,255,255,.24);
    }
    .brand-name{
      font-size:1rem;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      max-width:48vw;
    }

    .site-nav{
      display:flex;
      align-items:center;
      gap:8px;
    }
    .site-nav a{
      padding:10px 14px;
      border-radius:999px;
      border:1px solid transparent;
      color:var(--muted);
      line-height:1;
      font-size:.95rem;
      background:transparent;
    }
    .site-nav a:hover{
      color:var(--text);
      border-color:rgba(255,255,255,.09);
      background:rgba(255,255,255,.04);
      transform:translateY(-1px);
    }
    .site-nav a.active{
      color:var(--text);
      background:rgba(255,255,255,.06);
      border-color:rgba(198,163,104,.24);
    }
    .site-nav .nav-cta{
      color:#fff;
      background:linear-gradient(145deg, rgba(143,64,59,.96), rgba(179,87,79,.9));
      border-color:rgba(255,255,255,.08);
      box-shadow:0 12px 26px rgba(143,64,59,.22);
    }
    .site-nav .nav-cta:hover{
      background:linear-gradient(145deg, rgba(155,72,66,.98), rgba(195,98,90,.92));
      box-shadow:0 18px 34px rgba(143,64,59,.28);
    }

    .nav-toggle{
      display:none;
      width:46px;
      height:46px;
      border-radius:14px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.04);
      color:var(--text);
      align-items:center;
      justify-content:center;
      gap:4px;
      padding:0;
      flex-direction:column;
      box-shadow:var(--shadow-soft);
    }
    .nav-toggle span{
      width:18px;
      height:2px;
      border-radius:999px;
      background:currentColor;
      display:block;
      transition:transform var(--transition), opacity var(--transition);
    }

    main{
      position:relative;
      z-index:1;
      padding-top:90px;
    }

    .article-hero{
      padding:clamp(28px, 4vw, 46px) 0 22px;
    }
    .crumbs{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:10px;
      color:var(--muted);
      font-size:.92rem;
      margin-bottom:18px;
    }
    .crumbs a{
      color:var(--muted);
    }
    .crumbs a:hover{
      color:var(--text);
    }
    .crumbs .sep{
      color:rgba(255,255,255,.18);
    }
    .article-hero-card{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius-lg);
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow);
      background:
        linear-gradient(135deg, rgba(16,13,12,.92), rgba(20,15,13,.82)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    }
    .article-hero-card::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg, rgba(10,8,7,.88) 0%, rgba(18,15,14,.64) 52%, rgba(18,15,14,.28) 100%),
        radial-gradient(circle at 72% 22%, rgba(198,163,104,.16), transparent 24%);
      pointer-events:none;
    }
    .article-hero-grid{
      position:relative;
      display:grid;
      grid-template-columns:minmax(0,1.35fr) minmax(280px,.85fr);
      gap:24px;
      align-items:stretch;
      padding:clamp(26px, 4vw, 40px);
    }
    .article-hero-copy{
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      gap:18px;
      min-width:0;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:10px;
      width:fit-content;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(198,163,104,.18);
      color:var(--accent-3);
      font-size:.86rem;
      letter-spacing:.04em;
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:999px;
      background:var(--accent-2);
      box-shadow:0 0 0 4px rgba(198,163,104,.12);
    }
    .article-hero h1{
      margin:0;
      font-size:clamp(2rem, 4vw, 3.55rem);
      line-height:1.15;
      letter-spacing:-.02em;
      max-width:14ch;
    }
    .article-lead{
      margin:0;
      max-width:62ch;
      color:var(--muted);
      font-size:1.02rem;
    }
    .hero-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      align-items:center;
    }
    .meta-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:9px 12px;
      border-radius:999px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.04);
      color:var(--accent-3);
      font-size:.9rem;
      line-height:1;
    }
    .meta-pill strong{
      color:#fff;
      font-weight:700;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:4px;
    }
    .btn-solid,
    .btn-ghost{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:46px;
      padding:0 18px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:700;
      letter-spacing:.01em;
      transition:transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition), color var(--transition);
    }
    .btn-solid{
      color:#fff;
      background:linear-gradient(145deg, rgba(143,64,59,.98), rgba(177,85,78,.92));
      border-color:rgba(255,255,255,.08);
      box-shadow:0 14px 30px rgba(143,64,59,.26);
    }
    .btn-solid:hover{
      color:#fff;
      transform:translateY(-1px);
      box-shadow:0 20px 38px rgba(143,64,59,.34);
    }
    .btn-ghost{
      color:var(--text);
      background:rgba(255,255,255,.04);
      border-color:var(--line);
    }
    .btn-ghost:hover{
      color:var(--text);
      transform:translateY(-1px);
      border-color:rgba(198,163,104,.28);
      background:rgba(255,255,255,.06);
      box-shadow:var(--shadow-soft);
    }

    .article-hero-visual{
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      gap:14px;
      min-width:0;
    }
    .visual-frame{
      position:relative;
      overflow:hidden;
      border-radius:24px;
      border:1px solid rgba(255,255,255,.08);
      background:rgba(255,255,255,.03);
      box-shadow:var(--shadow-soft);
      min-height:100%;
    }
    .visual-frame img{
      width:100%;
      height:100%;
      min-height:300px;
      object-fit:cover;
      aspect-ratio:4/5;
      filter:saturate(.95) contrast(1.02);
    }
    .visual-caption{
      display:flex;
      flex-direction:column;
      gap:8px;
      padding:16px 18px 0;
      color:var(--muted);
      font-size:.94rem;
    }
    .visual-caption strong{
      color:var(--text);
      font-size:1rem;
    }

    .section{
      padding:clamp(46px, 6vw, 84px) 0;
      position:relative;
      scroll-margin-top:104px;
    }
    .section-title{
      margin-bottom:22px;
      max-width:920px;
    }
    .section-title .kicker{
      display:inline-flex;
      align-items:center;
      gap:10px;
      color:var(--accent-2);
      font-size:.88rem;
      letter-spacing:.06em;
      font-weight:700;
      margin-bottom:10px;
    }
    .section-title .kicker::before{
      content:"";
      width:28px;
      height:1px;
      background:linear-gradient(90deg, rgba(198,163,104,.15), rgba(198,163,104,.95));
    }
    .section-title h2{
      margin:0 0 10px;
      font-size:clamp(1.45rem, 2.2vw, 2.1rem);
      line-height:1.25;
    }
    .section-title p{
      margin:0;
      color:var(--muted);
      max-width:68ch;
    }

    .article-grid{
      display:grid;
      grid-template-columns:minmax(0,1.6fr) minmax(280px,.8fr);
      gap:24px;
      align-items:start;
    }
    .content-card,
    .side-card,
    .mini-card,
    .cta-band,
    .related-card,
    .empty-state,
    .faq-item{
      border-radius:var(--radius);
      border:1px solid var(--line);
      background:var(--panel);
      box-shadow:var(--shadow-soft);
    }
    .content-card{
      overflow:hidden;
    }
    .content-card-inner{
      padding:clamp(20px, 3vw, 32px);
    }
    .content-head{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding-bottom:18px;
      margin-bottom:18px;
      border-bottom:1px solid var(--line);
    }
    .content-head .state{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--accent-3);
      font-weight:700;
      font-size:.92rem;
    }
    .content-head .state::before{
      content:"";
      width:9px;
      height:9px;
      border-radius:999px;
      background:var(--accent-2);
      box-shadow:0 0 0 4px rgba(198,163,104,.12);
    }
    .content-head .time{
      color:var(--muted);
      font-size:.92rem;
    }

    .article-prose{
      color:var(--text);
      font-size:1rem;
      line-height:1.9;
    }
    .article-prose > *:first-child{
      margin-top:0;
    }
    .article-prose h2,
    .article-prose h3,
    .article-prose h4{
      line-height:1.35;
      margin:1.6em 0 .8em;
      letter-spacing:-.01em;
    }
    .article-prose h2{
      font-size:1.45rem;
    }
    .article-prose h3{
      font-size:1.18rem;
    }
    .article-prose p{
      margin:0 0 1em;
      color:rgba(246,239,231,.95);
    }
    .article-prose a{
      color:var(--accent-2);
      text-decoration:none;
      border-bottom:1px solid rgba(198,163,104,.32);
    }
    .article-prose a:hover{
      color:#f0d8a5;
      border-bottom-color:rgba(240,216,165,.7);
    }
    .article-prose ul,
    .article-prose ol{
      padding-left:1.2em;
      margin:0 0 1em;
    }
    .article-prose li{
      margin:.45em 0;
      color:rgba(246,239,231,.95);
    }
    .article-prose blockquote{
      margin:1.4em 0;
      padding:18px 18px 18px 20px;
      border-left:3px solid var(--accent-2);
      background:rgba(255,255,255,.04);
      border-radius:0 var(--radius-sm) var(--radius-sm) 0;
      color:#f1e7da;
    }
    .article-prose hr{
      border:0;
      border-top:1px solid var(--line);
      margin:1.6em 0;
    }
    .article-prose img{
      width:100%;
      height:auto;
      margin:1.4em 0;
      border-radius:18px;
      border:1px solid rgba(255,255,255,.08);
      box-shadow:0 16px 34px rgba(0,0,0,.24);
    }
    .article-prose figure{
      margin:1.4em 0;
    }
    .article-prose figcaption{
      color:var(--muted);
      font-size:.92rem;
      text-align:center;
      margin-top:10px;
    }
    .article-prose table{
      width:100%;
      border-collapse:collapse;
      margin:1.4em 0;
      overflow:hidden;
      border-radius:16px;
      display:block;
      max-width:100%;
      border:1px solid var(--line);
      background:rgba(255,255,255,.03);
    }
    .article-prose table thead{
      background:rgba(255,255,255,.05);
    }
    .article-prose table th,
    .article-prose table td{
      padding:12px 14px;
      border-bottom:1px solid var(--line);
      text-align:left;
      vertical-align:top;
      min-width:120px;
    }
    .article-prose strong{
      color:#fff;
      font-weight:700;
    }

    .side-stack{
      display:grid;
      gap:18px;
      position:sticky;
      top:104px;
    }
    .side-card{
      overflow:hidden;
    }
    .side-card-inner{
      padding:18px;
    }
    .side-title{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-bottom:14px;
      padding-bottom:12px;
      border-bottom:1px solid var(--line);
    }
    .side-title h3{
      margin:0;
      font-size:1.02rem;
    }
    .side-title span{
      color:var(--muted);
      font-size:.9rem;
    }
    .info-list{
      display:grid;
      gap:12px;
    }
    .info-row{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:16px;
      padding:12px 14px;
      border-radius:16px;
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.04);
    }
    .info-row .label{
      color:var(--muted);
      font-size:.9rem;
      flex:0 0 auto;
    }
    .info-row .value{
      color:var(--text);
      text-align:right;
      font-weight:600;
      min-width:0;
      word-break:break-all;
    }
    .thumb-card{
      overflow:hidden;
      border-radius:20px;
      border:1px solid rgba(255,255,255,.08);
      background:rgba(255,255,255,.03);
      margin-top:4px;
    }
    .thumb-card img{
      width:100%;
      aspect-ratio:16/10;
      object-fit:cover;
    }
    .thumb-card .thumb-note{
      padding:14px 16px 16px;
      color:var(--muted);
      font-size:.93rem;
    }
    .keyword-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .keyword-tags .tag{
      display:inline-flex;
      align-items:center;
      padding:8px 11px;
      border-radius:999px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(198,163,104,.16);
      color:var(--accent-3);
      font-size:.88rem;
      line-height:1;
    }
    .quick-actions{
      display:grid;
      gap:10px;
    }
    .quick-actions a{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding:13px 14px;
      border-radius:16px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.06);
      color:var(--text);
    }
    .quick-actions a:hover{
      transform:translateY(-1px);
      border-color:rgba(198,163,104,.22);
      box-shadow:0 12px 24px rgba(0,0,0,.18);
    }
    .quick-actions small{
      color:var(--muted);
    }

    .related-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:18px;
    }
    .related-card{
      overflow:hidden;
      display:flex;
      flex-direction:column;
      min-height:100%;
      background:var(--panel-strong);
    }
    .related-card .thumb{
      position:relative;
      overflow:hidden;
    }
    .related-card .thumb img{
      width:100%;
      aspect-ratio:16/9;
      object-fit:cover;
      filter:saturate(.95) contrast(1.02);
      transition:transform var(--transition);
    }
    .related-card:hover .thumb img{
      transform:scale(1.03);
    }
    .related-card .body{
      padding:16px 16px 18px;
      display:flex;
      flex-direction:column;
      gap:10px;
      flex:1 1 auto;
    }
    .tag-row{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .mini-tag{
      display:inline-flex;
      align-items:center;
      padding:6px 9px;
      border-radius:999px;
      border:1px solid rgba(198,163,104,.18);
      color:var(--accent-3);
      background:rgba(255,255,255,.03);
      font-size:.82rem;
      line-height:1;
    }
    .related-card h3{
      margin:0;
      font-size:1.05rem;
      line-height:1.35;
    }
    .related-card p{
      margin:0;
      color:var(--muted);
      font-size:.94rem;
    }
    .card-link{
      margin-top:auto;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--accent-2);
      font-weight:700;
      font-size:.92rem;
    }
    .card-link::after{
      content:"→";
      transition:transform var(--transition);
    }
    .related-card:hover .card-link::after{
      transform:translateX(2px);
    }

    .faq-wrap{
      display:grid;
      gap:14px;
    }
    .faq-item{
      overflow:hidden;
      background:var(--panel);
    }
    .faq-item summary{
      list-style:none;
      cursor:pointer;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      padding:18px 20px;
      font-weight:700;
      line-height:1.45;
      user-select:none;
    }
    .faq-item summary::-webkit-details-marker{
      display:none;
    }
    .faq-item summary::after{
      content:"+";
      width:28px;
      height:28px;
      border-radius:999px;
      display:grid;
      place-items:center;
      flex:0 0 auto;
      color:var(--accent-3);
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.06);
      transition:transform var(--transition), background-color var(--transition), border-color var(--transition);
    }
    .faq-item[open] summary{
      border-bottom:1px solid var(--line);
    }
    .faq-item[open] summary::after{
      content:"−";
      transform:rotate(0deg);
      background:rgba(198,163,104,.08);
      border-color:rgba(198,163,104,.22);
    }
    .faq-item .faq-body{
      padding:0 20px 18px;
      color:var(--muted);
    }

    .cta-band{
      position:relative;
      overflow:hidden;
      background:
        linear-gradient(135deg, rgba(143,64,59,.96), rgba(45,32,28,.96));
      border-color:rgba(255,255,255,.08);
    }
    .cta-band::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 78% 18%, rgba(198,163,104,.22), transparent 20%),
        radial-gradient(circle at 18% 72%, rgba(255,255,255,.08), transparent 22%);
      pointer-events:none;
    }
    .cta-band-inner{
      position:relative;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      padding:28px;
    }
    .cta-band h2{
      margin:0 0 8px;
      font-size:clamp(1.3rem, 2.2vw, 2rem);
      line-height:1.25;
    }
    .cta-band p{
      margin:0;
      color:rgba(246,239,231,.82);
      max-width:60ch;
    }
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      flex:0 0 auto;
    }
    .cta-actions .btn-ghost{
      color:#fff;
      border-color:rgba(255,255,255,.16);
      background:rgba(255,255,255,.06);
    }
    .cta-actions .btn-ghost:hover{
      border-color:rgba(255,255,255,.26);
      background:rgba(255,255,255,.1);
    }

    .empty-state{
      padding:clamp(34px, 5vw, 56px);
      text-align:center;
      background:var(--panel-strong);
    }
    .empty-state h1,
    .empty-state h2{
      margin:0 0 10px;
      font-size:clamp(1.7rem, 3vw, 2.4rem);
      line-height:1.2;
    }
    .empty-state p{
      margin:0 auto 20px;
      max-width:42ch;
      color:var(--muted);
    }

    .site-footer{
      position:relative;
      z-index:1;
      padding:28px 0 34px;
      border-top:1px solid rgba(255,255,255,.06);
      background:linear-gradient(180deg, rgba(11,9,8,.2), rgba(11,9,8,.72));
      margin-top:14px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.3fr .9fr .9fr;
      gap:24px;
      padding:20px 0 24px;
    }
    .footer-brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      font-weight:800;
      font-size:1rem;
      margin-bottom:12px;
    }
    .footer-note{
      margin:0;
      color:var(--muted);
      max-width:42ch;
      font-size:.94rem;
    }
    .footer-title{
      margin:0 0 12px;
      color:var(--accent-3);
      font-weight:700;
      font-size:.95rem;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:var(--muted);
      width:fit-content;
    }
    .footer-links a:hover{
      color:var(--text);
      transform:translateX(2px);
    }
    .footer-meta{
      display:flex;
      flex-wrap:wrap;
      gap:14px 18px;
      padding-top:18px;
      border-top:1px solid var(--line);
      color:var(--muted-2);
      font-size:.92rem;
    }

    .prose-spacer{
      height:2px;
    }

    @media (max-width: 1199.98px){
      .article-grid{
        grid-template-columns:minmax(0,1fr);
      }
      .side-stack{
        position:relative;
        top:auto;
        grid-template-columns:repeat(3, minmax(0,1fr));
      }
      .related-grid{
        grid-template-columns:repeat(2, minmax(0,1fr));
      }
    }
    @media (max-width: 991.98px){
      .article-hero-grid{
        grid-template-columns:minmax(0,1fr);
      }
      .visual-frame img{
        aspect-ratio:16/9;
        min-height:240px;
      }
      .footer-grid{
        grid-template-columns:1fr 1fr;
      }
      .footer-grid > div:first-child{
        grid-column:1 / -1;
      }
      .side-stack{
        grid-template-columns:1fr;
      }
    }
    @media (max-width: 767.98px){
      .header-inner{
        min-height:72px;
      }
      .brand-name{
        max-width:52vw;
      }
      .nav-toggle{
        display:inline-flex;
      }
      .site-nav{
        position:absolute;
        top:calc(100% + 10px);
        right:calc(var(--space));
        left:calc(var(--space));
        display:none;
        flex-direction:column;
        align-items:stretch;
        gap:8px;
        padding:12px;
        border-radius:20px;
        background:rgba(16,13,12,.98);
        border:1px solid rgba(255,255,255,.08);
        box-shadow:var(--shadow);
      }
      .site-nav.open{
        display:flex;
      }
      .site-nav a{
        width:100%;
        justify-content:center;
        text-align:center;
      }
      .article-hero h1{
        max-width:none;
      }
      .related-grid{
        grid-template-columns:1fr;
      }
      .cta-band-inner{
        flex-direction:column;
        align-items:flex-start;
      }
      .cta-actions{
        width:100%;
      }
      .cta-actions .btn-solid,
      .cta-actions .btn-ghost,
      .hero-actions .btn-solid,
      .hero-actions .btn-ghost{
        flex:1 1 220px;
      }
      .footer-grid{
        grid-template-columns:1fr;
      }
      .footer-grid > div:first-child{
        grid-column:auto;
      }
    }
    @media (max-width: 575.98px){
      .container{
        width:min(var(--container), calc(100% - 24px));
      }
      main{
        padding-top:82px;
      }
      .article-hero{
        padding-top:18px;
      }
      .article-hero-card,
      .content-card,
      .side-card,
      .related-card,
      .faq-item,
      .cta-band,
      .empty-state{
        border-radius:18px;
      }
      .article-hero-grid,
      .content-card-inner,
      .side-card-inner,
      .cta-band-inner{
        padding:18px;
      }
      .article-hero h1{
        font-size:1.9rem;
      }
      .article-lead{
        font-size:.98rem;
      }
      .hero-actions,
      .cta-actions{
        flex-direction:column;
      }
      .hero-actions .btn-solid,
      .hero-actions .btn-ghost,
      .cta-actions .btn-solid,
      .cta-actions .btn-ghost{
        width:100%;
      }
      .content-head{
        align-items:flex-start;
      }
      .faq-item summary{
        padding:16px 16px;
      }
      .faq-item .faq-body{
        padding:0 16px 16px;
      }
      .visual-caption{
        padding:14px 14px 0;
      }
      .footer-meta{
        flex-direction:column;
        gap:8px;
      }
    }

/* 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}