/* roulang page: index */
:root{
      --bg: #f4ede4;
      --bg-2: #efe3d5;
      --surface: #fffaf4;
      --surface-2: #f8f0e7;
      --text: #23171c;
      --muted: #6d5d65;
      --line: #e4d5c6;
      --line-strong: #cfbba5;
      --primary: #7b1020;
      --primary-2: #9d1f34;
      --accent: #c08a2d;
      --accent-2: #e2c27a;
      --shadow: 0 18px 42px rgba(31, 17, 22, .10);
      --shadow-soft: 0 10px 26px rgba(31, 17, 22, .08);
      --radius-xl: 28px;
      --radius-lg: 22px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --container: 1280px;
      --gutter: 24px;
      --transition: 180ms cubic-bezier(.2,.8,.2,1);
    }

    *, *::before, *::after{ box-sizing: border-box; }
    html{ scroll-behavior: smooth; }
    body{
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      color: var(--text);
      line-height: 1.7;
      background:
        radial-gradient(1100px 500px at 10% 0%, rgba(192,138,45,.10), transparent 55%),
        radial-gradient(900px 420px at 95% 4%, rgba(123,16,32,.10), transparent 50%),
        linear-gradient(180deg, #faf5ef 0%, #f5ede4 40%, #f3eadf 100%);
      min-height: 100vh;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }

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

    a{
      color: inherit;
      text-decoration: none;
      transition: color var(--transition), transform var(--transition), border-color var(--transition), background-color var(--transition), box-shadow var(--transition), opacity var(--transition);
    }

    button, input, select, textarea{
      font: inherit;
      color: inherit;
    }

    button{
      cursor: pointer;
    }

    ::selection{
      background: rgba(123,16,32,.18);
      color: var(--text);
    }

    .skip-link{
      position: absolute;
      left: -999px;
      top: 8px;
      z-index: 1000;
      background: var(--primary);
      color: #fff;
      padding: 10px 14px;
      border-radius: 999px;
      box-shadow: var(--shadow-soft);
    }
    .skip-link:focus{ left: 14px; outline: none; }

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

    .site-header{
      position: sticky;
      top: 0;
      z-index: 80;
      background: rgba(248, 240, 231, .96);
      border-bottom: 1px solid rgba(228, 213, 198, .9);
      backdrop-filter: none;
    }

    .header-inner{
      min-height: 78px;
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .brand{
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
      flex: 0 0 auto;
      font-weight: 800;
      letter-spacing: .02em;
    }

    .brand-mark{
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
      color: #fff;
      box-shadow: 0 10px 22px rgba(123,16,32,.22);
      font-size: 14px;
      font-weight: 800;
    }

    .brand-text{
      font-size: 17px;
      white-space: nowrap;
    }

    .nav-toggle{
      position: absolute;
      opacity: 0;
      pointer-events: none;
    }

    .nav-btn{
      display: none;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-width: 88px;
      padding: 11px 14px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: var(--surface);
      box-shadow: 0 8px 20px rgba(31,17,22,.05);
      user-select: none;
    }

    .nav-btn:focus-visible{
      outline: 3px solid rgba(192,138,45,.35);
      outline-offset: 3px;
    }

    .site-nav{
      margin-left: auto;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .site-nav a{
      padding: 11px 14px;
      border-radius: 999px;
      color: var(--muted);
      border: 1px solid transparent;
      font-weight: 600;
    }

    .site-nav a:hover,
    .site-nav a:focus-visible{
      color: var(--primary);
      background: rgba(123,16,32,.06);
      border-color: rgba(123,16,32,.12);
      outline: none;
    }

    .site-nav a.active{
      color: var(--primary);
      background: rgba(123,16,32,.08);
      border-color: rgba(123,16,32,.12);
    }

    .nav-cta{
      margin-left: 6px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 11px 18px;
      border-radius: 999px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
      color: #fff;
      font-weight: 700;
      box-shadow: 0 12px 26px rgba(123,16,32,.20);
      flex: 0 0 auto;
    }

    .nav-cta:hover,
    .nav-cta:focus-visible{
      transform: translateY(-1px);
      box-shadow: 0 16px 30px rgba(123,16,32,.24);
      outline: none;
    }

    .hero{
      position: relative;
      overflow: hidden;
      padding: 34px 0 26px;
    }

    .hero-shell{
      position: relative;
      border: 1px solid rgba(255,255,255,.38);
      border-radius: 34px;
      overflow: hidden;
      box-shadow: var(--shadow);
      background:
        linear-gradient(135deg, rgba(35,23,28,.88) 0%, rgba(45,24,30,.72) 42%, rgba(73,33,41,.66) 100%),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    }

    .hero-shell::before{
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(600px 250px at 18% 15%, rgba(226,194,122,.22), transparent 55%),
        radial-gradient(500px 230px at 85% 25%, rgba(255,255,255,.10), transparent 60%);
      pointer-events: none;
    }

    .hero-grid{
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 28px;
      padding: 32px;
      align-items: center;
      color: #fff8f3;
    }

    .eyebrow{
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 13px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,.18);
      background: rgba(255,255,255,.08);
      color: rgba(255,248,243,.92);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: .06em;
    }

    .eyebrow::before{
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-2);
      box-shadow: 0 0 0 4px rgba(226,194,122,.16);
    }

    .hero h1{
      margin: 18px 0 14px;
      font-size: clamp(36px, 5vw, 64px);
      line-height: 1.06;
      letter-spacing: -.03em;
      font-weight: 900;
      max-width: 11.5em;
    }

    .hero p{
      margin: 0;
      color: rgba(255,248,243,.84);
      font-size: 17px;
      max-width: 46rem;
    }

    .hero-actions{
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 24px;
    }

    .btn{
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      min-height: 48px;
      padding: 0 18px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 700;
      white-space: nowrap;
      box-shadow: none;
    }

    .btn:hover,
    .btn:focus-visible{
      transform: translateY(-1px);
      outline: none;
    }

    .btn-primary{
      background: linear-gradient(135deg, var(--accent) 0%, #dfb85d 100%);
      color: #281a13;
      box-shadow: 0 14px 28px rgba(192,138,45,.28);
    }

    .btn-primary:hover,
    .btn-primary:focus-visible{
      box-shadow: 0 18px 32px rgba(192,138,45,.34);
    }

    .btn-secondary{
      background: rgba(255,255,255,.08);
      color: #fff;
      border-color: rgba(255,255,255,.18);
    }

    .btn-secondary:hover,
    .btn-secondary:focus-visible{
      background: rgba(255,255,255,.13);
      border-color: rgba(255,255,255,.28);
    }

    .searchbox{
      margin-top: 18px;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 10px;
      width: min(100%, 560px);
      padding: 10px;
      border-radius: 22px;
      background: rgba(255,255,255,.08);
      border: 1px solid rgba(255,255,255,.16);
    }

    .searchbox input{
      width: 100%;
      height: 50px;
      padding: 0 16px;
      border-radius: 16px;
      border: 1px solid rgba(255,255,255,.14);
      background: rgba(255,255,255,.08);
      color: #fff;
      outline: none;
    }

    .searchbox input::placeholder{
      color: rgba(255,248,243,.64);
    }

    .searchbox input:focus{
      border-color: rgba(226,194,122,.6);
      box-shadow: 0 0 0 4px rgba(226,194,122,.12);
    }

    .searchbox button{
      border: 0;
      min-height: 50px;
      padding: 0 18px;
      border-radius: 16px;
      background: #fff;
      color: var(--primary);
      font-weight: 800;
    }

    .searchbox button:hover,
    .searchbox button:focus-visible{
      transform: translateY(-1px);
      box-shadow: 0 10px 22px rgba(0,0,0,.12);
      outline: none;
    }

    .hero-meta{
      margin-top: 18px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      color: rgba(255,248,243,.78);
    }

    .hero-meta span{
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 9px 13px;
      border-radius: 999px;
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.12);
      font-size: 13px;
    }

    .hero-meta span::before{
      content: "";
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent-2);
    }

    .hero-visual{
      display: grid;
      grid-template-columns: 1.25fr .75fr;
      gap: 14px;
      align-items: stretch;
    }

    .visual-card,
    .stack-card{
      position: relative;
      overflow: hidden;
      border-radius: 24px;
      background: rgba(255,255,255,.08);
      border: 1px solid rgba(255,255,255,.12);
      box-shadow: 0 14px 28px rgba(0,0,0,.15);
    }

    .visual-card{
      min-height: 430px;
    }

    .visual-card img,
    .stack-card img{
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .visual-card::after,
    .stack-card::after{
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(9,7,8,.06) 0%, rgba(9,7,8,.42) 100%);
      pointer-events: none;
    }

    .visual-badge{
      position: absolute;
      left: 18px;
      top: 18px;
      z-index: 1;
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(35,23,28,.74);
      color: #fff;
      border: 1px solid rgba(255,255,255,.14);
      font-size: 12px;
      letter-spacing: .04em;
    }

    .visual-caption{
      position: absolute;
      left: 18px;
      right: 18px;
      bottom: 18px;
      z-index: 1;
      padding: 14px 15px;
      border-radius: 18px;
      background: rgba(35,23,28,.74);
      border: 1px solid rgba(255,255,255,.12);
      color: #fff;
    }

    .visual-caption strong{
      display: block;
      font-size: 16px;
      margin-bottom: 4px;
    }

    .visual-caption span{
      color: rgba(255,248,243,.80);
      font-size: 13px;
    }

    .stack-wrap{
      display: grid;
      gap: 14px;
    }

    .stack-card{
      min-height: 208px;
    }

    .stack-card .visual-caption{
      right: 12px;
      left: 12px;
      bottom: 12px;
      padding: 12px 13px;
    }

    .strip{
      padding: 18px 0 10px;
    }

    .strip-grid{
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 14px;
    }

    .strip-item{
      display: flex;
      align-items: center;
      gap: 13px;
      padding: 16px 18px;
      border-radius: 22px;
      background: rgba(255,250,244,.74);
      border: 1px solid rgba(228,213,198,.88);
      box-shadow: var(--shadow-soft);
    }

    .strip-icon{
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      background: linear-gradient(135deg, rgba(123,16,32,.12), rgba(192,138,45,.12));
      color: var(--primary);
      font-size: 18px;
      font-weight: 900;
      flex: 0 0 auto;
    }

    .strip-item strong{
      display: block;
      font-size: 15px;
      line-height: 1.25;
      margin-bottom: 2px;
    }

    .strip-item span{
      display: block;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.4;
    }

    .section{
      padding: 40px 0 10px;
    }

    .section-head{
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 18px;
      margin-bottom: 20px;
    }

    .section-head h2{
      margin: 0;
      font-size: clamp(24px, 2.8vw, 36px);
      line-height: 1.12;
      letter-spacing: -.02em;
      font-weight: 900;
    }

    .section-head p{
      margin: 0;
      color: var(--muted);
      max-width: 52ch;
      font-size: 15px;
    }

    .feature-grid{
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 18px;
    }

    .feature-card,
    .feature-stack-card,
    .update-card,
    .trust-card,
    .faq-item,
    .cta-panel{
      background: rgba(255,250,244,.92);
      border: 1px solid rgba(228,213,198,.92);
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-soft);
    }

    .feature-card{
      overflow: hidden;
      display: grid;
      grid-template-rows: 320px auto;
    }

    .feature-card .image,
    .feature-stack-card .image{
      position: relative;
      overflow: hidden;
      background: var(--surface-2);
    }

    .feature-card .image img,
    .feature-stack-card .image img,
    .update-media img{
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 320ms ease;
    }

    .feature-card:hover .image img,
    .feature-stack-card:hover .image img,
    .update-card:hover .update-media img{
      transform: scale(1.03);
    }

    .feature-body{
      padding: 22px 22px 24px;
    }

    .meta-row,
    .card-meta{
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px 10px;
      margin-bottom: 12px;
    }

    .badge{
      display: inline-flex;
      align-items: center;
      gap: 6px;
      height: 30px;
      padding: 0 11px;
      border-radius: 999px;
      background: rgba(123,16,32,.08);
      color: var(--primary);
      border: 1px solid rgba(123,16,32,.12);
      font-size: 12px;
      font-weight: 800;
    }

    .time,
    .small-meta{
      font-size: 12px;
      color: var(--muted);
    }

    .feature-body h3,
    .update-body h3,
    .trust-card h3{
      margin: 0 0 10px;
      line-height: 1.28;
      font-size: 22px;
      letter-spacing: -.02em;
    }

    .feature-body p,
    .update-body p,
    .trust-card p,
    .faq-content,
    .footer-note{
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .feature-list{
      margin: 16px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 10px;
    }

    .feature-list li{
      display: flex;
      gap: 10px;
      align-items: flex-start;
      color: var(--text);
      font-size: 14px;
    }

    .feature-list li::before{
      content: "✓";
      display: grid;
      place-items: center;
      width: 20px;
      height: 20px;
      margin-top: 1px;
      border-radius: 50%;
      background: rgba(192,138,45,.14);
      color: var(--accent);
      font-weight: 900;
      flex: 0 0 auto;
    }

    .feature-side{
      display: grid;
      gap: 18px;
    }

    .feature-stack-card{
      overflow: hidden;
      display: grid;
      grid-template-columns: 162px 1fr;
      min-height: 180px;
    }

    .feature-stack-card .image{
      min-height: 180px;
    }

    .feature-stack-card .body{
      padding: 18px 18px 18px 0;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .feature-stack-card .body h3{
      font-size: 20px;
      margin-bottom: 8px;
    }

    .feature-stack-card .body p{
      margin-bottom: 14px;
    }

    .text-link{
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--primary);
      font-weight: 800;
    }

    .text-link::after{
      content: "→";
      transition: transform var(--transition);
    }

    .feature-card:hover,
    .feature-stack-card:hover,
    .update-card:hover,
    .trust-card:hover,
    .faq-item:hover,
    .cta-panel:hover{
      border-color: rgba(123,16,32,.18);
      box-shadow: 0 20px 42px rgba(31,17,22,.12);
      transform: translateY(-2px);
    }

    .updates-section{
      padding: 34px 0 8px;
    }

    .updates-grid{
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 18px;
    }

    .update-card{
      overflow: hidden;
      display: grid;
      grid-template-columns: 194px 1fr;
      min-height: 190px;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .update-media{
      position: relative;
      min-height: 190px;
      overflow: hidden;
      background: var(--surface-2);
    }

    .update-media::after{
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, rgba(17,10,12,.02) 0%, rgba(17,10,12,.10) 100%);
    }

    .update-body{
      padding: 18px 18px 18px 0;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .update-body h3{
      font-size: 18px;
      margin-bottom: 8px;
    }

    .update-body h3 a:hover,
    .update-body h3 a:focus-visible{
      color: var(--primary);
      outline: none;
    }

    .update-body p{
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
      margin-bottom: 14px;
    }

    .empty-state{
      padding: 30px;
      border-radius: var(--radius-xl);
      border: 1px dashed rgba(207,187,165,.95);
      background: rgba(255,250,244,.74);
      color: var(--muted);
      text-align: center;
      box-shadow: var(--shadow-soft);
    }

    .trust-section{
      padding: 34px 0 8px;
    }

    .trust-grid{
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .trust-card{
      padding: 22px;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .trust-icon{
      width: 48px;
      height: 48px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      background: linear-gradient(135deg, rgba(123,16,32,.10), rgba(192,138,45,.12));
      color: var(--primary);
      font-weight: 900;
      margin-bottom: 14px;
    }

    .check-list{
      list-style: none;
      padding: 0;
      margin: 16px 0 0;
      display: grid;
      gap: 10px;
    }

    .check-list li{
      display: flex;
      gap: 10px;
      align-items: flex-start;
      font-size: 14px;
      color: var(--text);
    }

    .check-list li::before{
      content: "•";
      color: var(--accent);
      font-weight: 900;
      line-height: 1.7;
    }

    .faq-section{
      padding: 34px 0 8px;
    }

    .faq-list{
      display: grid;
      gap: 12px;
    }

    .faq-item{
      overflow: hidden;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .faq-item summary{
      list-style: none;
      cursor: pointer;
      padding: 20px 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 20px;
      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;
      background: rgba(123,16,32,.08);
      color: var(--primary);
      flex: 0 0 auto;
      transition: transform var(--transition), background-color var(--transition);
    }

    .faq-item[open] summary::after{
      content: "–";
      background: rgba(192,138,45,.12);
    }

    .faq-content{
      padding: 0 22px 20px;
      max-width: 76ch;
    }

    .cta-section{
      padding: 38px 0 18px;
    }

    .cta-panel{
      position: relative;
      overflow: hidden;
      padding: 28px;
      background:
        linear-gradient(135deg, rgba(35,23,28,.92) 0%, rgba(66,28,36,.90) 56%, rgba(123,16,32,.86) 100%),
        url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      color: #fff8f3;
      border: 1px solid rgba(255,255,255,.10);
    }

    .cta-panel::before{
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(10,7,8,.16) 0%, rgba(10,7,8,.08) 100%);
      pointer-events: none;
    }

    .cta-inner{
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 18px;
      align-items: center;
    }

    .cta-inner h2{
      margin: 0 0 8px;
      font-size: clamp(26px, 3vw, 40px);
      line-height: 1.14;
      font-weight: 900;
      letter-spacing: -.03em;
    }

    .cta-inner p{
      margin: 0;
      color: rgba(255,248,243,.82);
      max-width: 58ch;
    }

    .cta-actions{
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: flex-end;
    }

    .cta-actions .btn-secondary{
      border-color: rgba(255,255,255,.22);
    }

    .footer{
      padding: 22px 0 36px;
    }

    .footer-shell{
      border-top: 1px solid rgba(228,213,198,.9);
      padding-top: 24px;
      display: grid;
      grid-template-columns: 1.2fr .8fr .7fr;
      gap: 22px;
      align-items: start;
    }

    .footer-brand{
      display: flex;
      flex-direction: column;
      gap: 14px;
    }

    .footer-brand .brand-text{
      font-size: 18px;
    }

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

    .footer-links a{
      color: var(--muted);
      width: fit-content;
    }

    .footer-links a:hover,
    .footer-links a:focus-visible{
      color: var(--primary);
      outline: none;
    }

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

    .legal{
      color: var(--muted);
      font-size: 13px;
      line-height: 1.65;
    }

    .back-top{
      position: fixed;
      right: 18px;
      bottom: 18px;
      z-index: 90;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 48px;
      height: 48px;
      border-radius: 16px;
      border: 1px solid rgba(123,16,32,.15);
      background: rgba(255,250,244,.96);
      box-shadow: var(--shadow-soft);
      color: var(--primary);
      font-weight: 900;
    }

    .back-top:hover,
    .back-top:focus-visible{
      transform: translateY(-2px);
      box-shadow: var(--shadow);
      outline: none;
    }

    .focus-ring:focus-visible,
    .btn:focus-visible,
    .nav-cta:focus-visible,
    .site-nav a:focus-visible,
    .footer-links a:focus-visible,
    .text-link:focus-visible{
      outline: 3px solid rgba(192,138,45,.36);
      outline-offset: 3px;
    }

    .site-nav a,
    .nav-cta,
    .btn,
    .text-link,
    .update-card,
    .feature-card,
    .feature-stack-card,
    .trust-card,
    .faq-item,
    .cta-panel,
    .back-top{
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background-color var(--transition), color var(--transition), opacity var(--transition);
    }

    .update-card:hover .text-link::after,
    .feature-card:hover .text-link::after,
    .feature-stack-card:hover .text-link::after{
      transform: translateX(3px);
    }

    @media (max-width: 1280px){
      .hero-grid{
        grid-template-columns: 1fr 1fr;
        gap: 22px;
        padding: 28px;
      }
      .hero h1{ font-size: clamp(34px, 4.4vw, 56px); }
      .updates-grid{ grid-template-columns: 1fr; }
      .trust-grid{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
    }

    @media (max-width: 1024px){
      .header-inner{
        flex-wrap: wrap;
        padding: 12px 0;
      }
      .site-nav{
        order: 3;
        width: 100%;
        margin: 0;
        justify-content: flex-start;
        flex-wrap: wrap;
      }
      .nav-cta{
        margin-left: auto;
      }
      .hero-grid{
        grid-template-columns: 1fr;
      }
      .hero-visual{
        grid-template-columns: 1fr 1fr;
      }
      .feature-grid{
        grid-template-columns: 1fr;
      }
      .feature-stack-card{
        grid-template-columns: 180px 1fr;
      }
      .trust-grid{
        grid-template-columns: 1fr;
      }
      .footer-shell{
        grid-template-columns: 1fr 1fr;
      }
      .footer-note{
        grid-column: 1 / -1;
      }
    }

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

      .nav-btn{
        display: inline-flex;
        margin-left: auto;
      }

      .nav-cta{
        display: none;
      }

      .site-nav{
        display: grid;
        grid-template-columns: 1fr;
        gap: 8px;
        width: 100%;
        margin: 0;
        padding: 14px;
        border-radius: 22px;
        background: rgba(255,250,244,.98);
        border: 1px solid rgba(228,213,198,.92);
        box-shadow: var(--shadow-soft);
        position: absolute;
        left: 14px;
        right: 14px;
        top: calc(100% - 2px);
        opacity: 0;
        pointer-events: none;
        transform: translateY(-8px);
      }

      .site-nav a{
        background: rgba(123,16,32,.05);
        border-color: rgba(123,16,32,.10);
      }

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

      .nav-toggle:checked + .nav-btn{
        border-color: rgba(123,16,32,.18);
        color: var(--primary);
      }

      .hero{
        padding-top: 22px;
      }

      .hero-shell{
        border-radius: 28px;
      }

      .hero-grid{
        padding: 22px;
      }

      .hero h1{
        max-width: 100%;
        font-size: clamp(30px, 8vw, 48px);
      }

      .hero p{
        font-size: 15px;
      }

      .hero-visual{
        grid-template-columns: 1fr;
      }

      .visual-card{
        min-height: 280px;
      }

      .stack-wrap{
        grid-template-columns: 1fr 1fr;
      }

      .stack-card{
        min-height: 200px;
      }

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

      .section{
        padding-top: 28px;
      }

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

      .feature-card{
        grid-template-rows: 240px auto;
      }

      .feature-stack-card{
        grid-template-columns: 1fr;
      }

      .feature-stack-card .body{
        padding: 18px 18px 20px;
      }

      .feature-stack-card .image{
        min-height: 220px;
      }

      .update-card{
        grid-template-columns: 1fr;
      }

      .update-media{
        min-height: 220px;
      }

      .update-body{
        padding: 18px;
      }

      .cta-inner{
        grid-template-columns: 1fr;
      }

      .cta-actions{
        justify-content: flex-start;
      }

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

    @media (max-width: 520px){
      .header-inner{
        gap: 12px;
      }

      .brand-text{
        font-size: 15px;
      }

      .brand-mark{
        width: 38px;
        height: 38px;
        border-radius: 12px;
        font-size: 13px;
      }

      .hero-grid,
      .cta-panel{
        padding: 18px;
      }

      .hero-shell{
        border-radius: 24px;
      }

      .hero-actions,
      .hero-meta,
      .cta-actions{
        flex-direction: column;
      }

      .btn,
      .nav-btn,
      .searchbox button{
        width: 100%;
      }

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

      .stack-wrap,
      .strip-grid{
        grid-template-columns: 1fr;
      }

      .feature-card{
        grid-template-rows: 210px auto;
      }

      .feature-body,
      .trust-card{
        padding: 18px;
      }

      .faq-item summary,
      .faq-content{
        padding-left: 18px;
        padding-right: 18px;
      }

      .back-top{
        right: 14px;
        bottom: 14px;
      }
    }

    @media (max-width: 480px){
      .container{
        width: min(var(--container), calc(100% - 20px));
      }

      .hero{
        padding-top: 16px;
      }

      .hero-shell{
        border-radius: 22px;
      }

      .hero h1{
        font-size: clamp(28px, 9vw, 40px);
      }

      .visual-card{
        min-height: 240px;
      }

      .update-media,
      .feature-stack-card .image{
        min-height: 190px;
      }

      .strip-item{
        padding: 14px 15px;
      }

      .section-head h2{
        font-size: 22px;
      }

      .cta-inner h2{
        font-size: 24px;
      }
    }

/* roulang page: article */
:root{
      --bg: #f4ede4;
      --bg-2: #efe3d5;
      --surface: #fffaf4;
      --surface-2: #f8f0e7;
      --text: #23171c;
      --muted: #6d5d65;
      --line: #e4d5c6;
      --line-strong: #cfbba5;
      --primary: #7b1020;
      --primary-2: #9d1f34;
      --accent: #c08a2d;
      --accent-2: #e2c27a;
      --shadow: 0 18px 42px rgba(31, 17, 22, .10);
      --shadow-soft: 0 10px 26px rgba(31, 17, 22, .08);
      --radius-xl: 28px;
      --radius-lg: 22px;
      --radius-md: 16px;
      --radius-sm: 12px;
      --container: 1280px;
      --gutter: 24px;
      --transition: 180ms cubic-bezier(.2,.8,.2,1);
    }

    html{ scroll-behavior: smooth; }
    body{
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      color: var(--text);
      line-height: 1.7;
      background:
        radial-gradient(1100px 500px at 10% 0%, rgba(192,138,45,.10), transparent 55%),
        radial-gradient(900px 420px at 95% 4%, rgba(123,16,32,.10), transparent 50%),
        linear-gradient(180deg, #faf5ef 0%, #f5ede4 40%, #f3eadf 100%);
      min-height: 100vh;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }
    *, *::before, *::after{ box-sizing: border-box; }
    img{
      display: block;
      max-width: 100%;
      height: auto;
    }
    a{
      color: inherit;
      text-decoration: none;
      transition: color var(--transition), transform var(--transition), border-color var(--transition), background-color var(--transition), box-shadow var(--transition), opacity var(--transition);
    }
    button, input, select, textarea{
      font: inherit;
      color: inherit;
    }
    button{
      cursor: pointer;
    }
    ::selection{
      background: rgba(123,16,32,.18);
      color: var(--text);
    }
    .container{
      width: min(var(--container), calc(100% - 40px));
      margin: 0 auto;
    }
    .focus-ring:focus-visible,
    a:focus-visible,
    button:focus-visible,
    summary:focus-visible,
    input:focus-visible,
    textarea:focus-visible{
      outline: 3px solid rgba(192,138,45,.36);
      outline-offset: 3px;
    }

    .site-header{
      position: sticky;
      top: 0;
      z-index: 80;
      background: rgba(248, 240, 231, .96);
      border-bottom: 1px solid rgba(228, 213, 198, .9);
    }
    .header-inner{
      min-height: 78px;
      display: flex;
      align-items: center;
      gap: 16px;
      position: relative;
    }
    .brand{
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
      flex: 0 0 auto;
      font-weight: 800;
      letter-spacing: .02em;
    }
    .brand-mark{
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 14px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
      color: #fff;
      box-shadow: 0 10px 22px rgba(123,16,32,.22);
      font-size: 14px;
      font-weight: 800;
    }
    .brand-text{
      font-size: 17px;
      white-space: nowrap;
    }
    .nav-toggle{
      position: absolute;
      opacity: 0;
      pointer-events: none;
    }
    .nav-btn{
      display: none;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-width: 88px;
      padding: 11px 14px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: var(--surface);
      box-shadow: 0 8px 20px rgba(31,17,22,.05);
      user-select: none;
    }
    .nav-btn:hover{
      border-color: var(--line-strong);
      transform: translateY(-1px);
    }
    .site-nav{
      margin-left: auto;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .site-nav a{
      padding: 11px 14px;
      border-radius: 999px;
      color: var(--muted);
      border: 1px solid transparent;
      font-weight: 600;
      line-height: 1;
    }
    .site-nav a:hover,
    .site-nav a:focus-visible{
      color: var(--primary);
      background: rgba(123,16,32,.06);
      border-color: rgba(123,16,32,.12);
      outline: none;
    }
    .site-nav a.active{
      color: var(--primary);
      background: rgba(123,16,32,.08);
      border-color: rgba(123,16,32,.12);
    }
    .nav-cta{
      margin-left: 6px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 11px 18px;
      border-radius: 999px;
      background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
      color: #fff;
      font-weight: 700;
      box-shadow: 0 12px 26px rgba(123,16,32,.20);
      flex: 0 0 auto;
    }
    .nav-cta:hover,
    .nav-cta:focus-visible{
      transform: translateY(-1px);
      box-shadow: 0 16px 30px rgba(123,16,32,.24);
      outline: none;
    }

    main{
      display: block;
    }

    .article-hero{
      padding: 32px 0 18px;
    }
    .article-hero-shell{
      position: relative;
      overflow: hidden;
      border: 1px solid rgba(255,255,255,.38);
      border-radius: 34px;
      box-shadow: var(--shadow);
      background:
        linear-gradient(135deg, rgba(35,23,28,.90) 0%, rgba(45,24,30,.75) 45%, rgba(73,33,41,.68) 100%),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    }
    .article-hero-shell::before{
      content: "";
      position: absolute;
      inset: 0;
      background:
        radial-gradient(640px 260px at 18% 10%, rgba(226,194,122,.22), transparent 55%),
        radial-gradient(500px 230px at 88% 18%, rgba(255,255,255,.10), transparent 60%);
      pointer-events: none;
    }
    .article-hero-grid{
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1.08fr .92fr;
      gap: 28px;
      padding: 32px;
      align-items: center;
      color: #fff8f3;
    }
    .eyebrow{
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 8px 13px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,.18);
      background: rgba(255,255,255,.08);
      color: rgba(255,248,243,.92);
      font-size: 13px;
      font-weight: 700;
      letter-spacing: .06em;
      width: fit-content;
    }
    .eyebrow::before{
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent-2);
      box-shadow: 0 0 0 4px rgba(226,194,122,.16);
    }
    .breadcrumb{
      margin-top: 14px;
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      align-items: center;
      color: rgba(255,248,243,.74);
      font-size: 13px;
    }
    .breadcrumb a{
      color: rgba(255,248,243,.86);
      border-bottom: 1px solid rgba(255,255,255,.18);
    }
    .breadcrumb a:hover{
      color: #fff;
      border-bottom-color: rgba(255,255,255,.45);
    }
    .breadcrumb span{
      opacity: .72;
    }
    .article-title{
      margin: 18px 0 14px;
      font-size: clamp(34px, 4.7vw, 62px);
      line-height: 1.06;
      letter-spacing: -.03em;
      font-weight: 900;
      max-width: 11.5em;
    }
    .article-lead{
      margin: 0;
      color: rgba(255,248,243,.84);
      font-size: 17px;
      max-width: 46rem;
    }
    .article-meta-row{
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 22px;
    }
    .meta-chip{
      display: inline-flex;
      align-items: center;
      gap: 8px;
      min-height: 36px;
      padding: 8px 12px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,.16);
      background: rgba(255,255,255,.08);
      color: rgba(255,248,243,.92);
      font-size: 13px;
      font-weight: 700;
      white-space: nowrap;
    }
    .meta-chip strong{
      color: #fff;
      font-weight: 800;
    }
    .article-actions{
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 26px;
    }
    .ui-btn{
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 48px;
      padding: 0 18px;
      border-radius: 999px;
      font-weight: 700;
      border: 1px solid transparent;
      transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition), color var(--transition), opacity var(--transition);
    }
    .ui-btn:hover{
      transform: translateY(-1px);
    }
    .ui-btn-primary{
      background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
      color: #28160f;
      box-shadow: 0 14px 28px rgba(192,138,45,.22);
    }
    .ui-btn-primary:hover{
      box-shadow: 0 18px 36px rgba(192,138,45,.25);
    }
    .ui-btn-secondary{
      background: rgba(255,255,255,.08);
      color: #fff7f1;
      border-color: rgba(255,255,255,.22);
    }
    .ui-btn-secondary:hover{
      background: rgba(255,255,255,.12);
      border-color: rgba(255,255,255,.32);
    }

    .article-visual{
      display: grid;
      gap: 16px;
      align-content: start;
    }
    .cover-frame{
      position: relative;
      overflow: hidden;
      border-radius: 26px;
      border: 1px solid rgba(255,255,255,.18);
      box-shadow: 0 14px 28px rgba(18, 10, 14, .22);
      background: rgba(255,255,255,.05);
    }
    .cover-frame img{
      width: 100%;
      aspect-ratio: 4 / 3;
      object-fit: cover;
    }
    .cover-caption{
      position: absolute;
      left: 16px;
      bottom: 16px;
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(35,23,28,.74);
      color: #fff;
      font-size: 13px;
      font-weight: 700;
      backdrop-filter: none;
    }
    .tdk-card{
      padding: 18px 18px 20px;
      border-radius: 22px;
      border: 1px solid rgba(255,255,255,.14);
      background: rgba(35,23,28,.66);
      color: #fff7f1;
      box-shadow: 0 14px 28px rgba(18,10,14,.16);
    }
    .tdk-label{
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 12px;
      text-transform: uppercase;
      letter-spacing: .08em;
      color: rgba(255,245,237,.72);
    }
    .tdk-label::before{
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--accent-2);
      box-shadow: 0 0 0 4px rgba(226,194,122,.12);
    }
    .tdk-card strong{
      display: block;
      margin-top: 10px;
      font-size: 18px;
      line-height: 1.35;
    }
    .tdk-keywords{
      margin: 10px 0 0;
      color: rgba(255,245,237,.88);
      font-size: 13px;
      line-height: 1.75;
    }
    .tdk-desc{
      margin: 10px 0 0;
      color: rgba(255,245,237,.72);
      font-size: 13px;
      line-height: 1.8;
    }

    .article-body{
      padding: 12px 0 10px;
    }
    .content-grid{
      display: grid;
      grid-template-columns: minmax(0, 1.24fr) minmax(290px, .76fr);
      gap: 24px;
      align-items: start;
    }
    .article-card,
    .side-card,
    .update-card,
    .faq-panel,
    .cta-shell,
    .empty-card{
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-soft);
    }
    .article-card{
      padding: 30px;
    }
    .article-card-head{
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 18px;
      padding-bottom: 16px;
      border-bottom: 1px solid rgba(228,213,198,.85);
    }
    .article-card-title{
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .section-kicker{
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--primary);
      font-weight: 800;
      font-size: 13px;
      letter-spacing: .06em;
      text-transform: uppercase;
    }
    .section-kicker::before{
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--accent);
      box-shadow: 0 0 0 4px rgba(192,138,45,.12);
    }
    .section-title{
      margin: 0;
      font-size: 24px;
      line-height: 1.2;
      letter-spacing: -.02em;
      font-weight: 900;
    }
    .article-status{
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      color: var(--muted);
      font-size: 13px;
    }
    .article-status span{
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 8px 11px;
      border-radius: 999px;
      background: var(--surface-2);
      border: 1px solid var(--line);
      white-space: nowrap;
    }
    .article-content{
      font-size: 17px;
      line-height: 1.92;
      color: var(--text);
      overflow-wrap: break-word;
    }
    .article-content > :first-child{
      margin-top: 0;
    }
    .article-content h2,
    .article-content h3,
    .article-content h4{
      margin: 1.8em 0 .7em;
      line-height: 1.32;
      letter-spacing: -.02em;
      font-weight: 900;
      color: var(--text);
    }
    .article-content h2{ font-size: 1.45rem; }
    .article-content h3{ font-size: 1.18rem; }
    .article-content h4{ font-size: 1.05rem; }
    .article-content p{
      margin: 0 0 1em;
      color: #2d2026;
    }
    .article-content ul,
    .article-content ol{
      margin: 0 0 1.2em;
      padding-left: 1.35em;
    }
    .article-content li{
      margin: .45em 0;
    }
    .article-content a{
      color: var(--primary-2);
      text-decoration: underline;
      text-underline-offset: 3px;
      text-decoration-thickness: 1px;
    }
    .article-content a:hover{
      color: var(--primary);
    }
    .article-content blockquote{
      margin: 1.3em 0;
      padding: 18px 20px;
      border-left: 4px solid var(--accent);
      border-radius: 0 16px 16px 0;
      background: linear-gradient(90deg, rgba(192,138,45,.10), rgba(192,138,45,.03));
      color: #3b2a31;
      font-size: 16px;
    }
    .article-content hr{
      border: 0;
      height: 1px;
      margin: 1.6em 0;
      background: linear-gradient(90deg, transparent, rgba(207,187,165,.95), transparent);
    }
    .article-content img{
      margin: 1.4em 0;
      width: 100%;
      border-radius: 20px;
      border: 1px solid rgba(228,213,198,.95);
      box-shadow: 0 10px 24px rgba(31,17,22,.08);
    }
    .article-content figure{
      margin: 1.4em 0;
    }
    .article-content figcaption{
      margin-top: 10px;
      color: var(--muted);
      font-size: 14px;
      text-align: center;
    }
    .article-content table{
      width: 100%;
      border-collapse: collapse;
      margin: 1.4em 0;
      display: block;
      overflow-x: auto;
      background: var(--surface);
      border: 1px solid var(--line);
      border-radius: 16px;
    }
    .article-content th,
    .article-content td{
      padding: 12px 14px;
      border-bottom: 1px solid rgba(228,213,198,.75);
      text-align: left;
      vertical-align: top;
    }
    .article-content th{
      background: var(--surface-2);
      font-weight: 800;
      color: var(--text);
    }
    .article-content pre{
      margin: 1.4em 0;
      padding: 16px 18px;
      border-radius: 18px;
      background: #1f151a;
      color: #f4e8de;
      overflow: auto;
    }
    .article-content code{
      padding: .15em .42em;
      border-radius: 8px;
      background: rgba(123,16,32,.08);
      color: var(--primary);
      font-size: .95em;
    }
    .article-content pre code{
      padding: 0;
      background: transparent;
      color: inherit;
    }
    .article-content .note-box,
    .article-content .tip-box{
      margin: 1.4em 0;
      padding: 16px 18px;
      border-radius: 18px;
      border: 1px solid rgba(192,138,45,.20);
      background: rgba(192,138,45,.08);
      color: #3b2a31;
    }

    .sidebar{
      display: grid;
      gap: 16px;
      position: sticky;
      top: 98px;
    }
    .side-card{
      padding: 22px;
    }
    .side-card-head{
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      margin-bottom: 14px;
      padding-bottom: 14px;
      border-bottom: 1px solid rgba(228,213,198,.78);
    }
    .side-card-head h3{
      margin: 0;
      font-size: 18px;
      line-height: 1.25;
      font-weight: 900;
      letter-spacing: -.02em;
    }
    .side-card-head .mini{
      color: var(--muted);
      font-size: 13px;
      white-space: nowrap;
    }
    .side-links{
      display: grid;
      gap: 10px;
    }
    .side-link{
      display: flex;
      gap: 12px;
      align-items: flex-start;
      padding: 12px 13px;
      border-radius: 16px;
      border: 1px solid var(--line);
      background: var(--surface-2);
    }
    .side-link:hover{
      border-color: rgba(123,16,32,.16);
      transform: translateY(-1px);
      box-shadow: 0 12px 22px rgba(31,17,22,.06);
    }
    .side-link strong{
      display: block;
      font-size: 15px;
      line-height: 1.45;
      margin-bottom: 4px;
    }
    .side-link span{
      display: block;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.65;
    }
    .side-link-icon{
      width: 34px;
      height: 34px;
      border-radius: 12px;
      flex: 0 0 auto;
      display: grid;
      place-items: center;
      background: linear-gradient(135deg, rgba(123,16,32,.12), rgba(192,138,45,.12));
      color: var(--primary);
      font-weight: 800;
    }
    .tip-list{
      margin: 0;
      padding-left: 1.1em;
      color: var(--muted);
    }
    .tip-list li{
      margin: 0 0 .72em;
    }
    .side-actions{
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .side-actions .ui-btn{
      width: 100%;
    }
    .ui-btn-outline{
      background: transparent;
      border-color: var(--line-strong);
      color: var(--primary);
    }
    .ui-btn-outline:hover{
      background: rgba(123,16,32,.05);
      border-color: rgba(123,16,32,.18);
    }

    .updates-section{
      padding: 12px 0 6px;
    }
    .section-head{
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 18px;
    }
    .section-head h2{
      margin: 0;
      font-size: 28px;
      line-height: 1.2;
      letter-spacing: -.02em;
      font-weight: 900;
    }
    .section-head p{
      margin: 0;
      color: var(--muted);
      max-width: 44rem;
      font-size: 15px;
    }
    .updates-grid{
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }
    .update-card{
      overflow: hidden;
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }
    .update-card:hover{
      transform: translateY(-3px);
      border-color: rgba(123,16,32,.18);
      box-shadow: 0 18px 34px rgba(31,17,22,.10);
    }
    .update-thumb{
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid rgba(228,213,198,.85);
      background: var(--surface-2);
    }
    .update-thumb img{
      width: 100%;
      aspect-ratio: 16 / 10;
      object-fit: cover;
      transition: transform 320ms ease;
    }
    .update-card:hover .update-thumb img{
      transform: scale(1.03);
    }
    .update-body{
      padding: 18px 18px 20px;
    }
    .update-meta{
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 12px;
    }
    .badge-chip{
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 10px;
      border-radius: 999px;
      background: rgba(123,16,32,.08);
      color: var(--primary);
      font-size: 12px;
      font-weight: 700;
      border: 1px solid rgba(123,16,32,.10);
    }
    .update-body h3{
      margin: 0 0 8px;
      font-size: 18px;
      line-height: 1.35;
      font-weight: 900;
      letter-spacing: -.02em;
    }
    .update-body p{
      margin: 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.8;
    }
    .update-foot{
      margin-top: 14px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      color: var(--muted);
      font-size: 13px;
    }
    .update-link{
      color: var(--primary);
      font-weight: 700;
      border-bottom: 1px solid rgba(123,16,32,.18);
      padding-bottom: 2px;
    }
    .update-link:hover{
      color: var(--primary-2);
      border-bottom-color: rgba(157,31,52,.34);
    }

    .faq-section{
      padding: 18px 0 8px;
    }
    .faq-panel{
      padding: 22px 22px 6px;
    }
    .faq-list{
      display: grid;
      gap: 14px;
    }
    .faq-item{
      border-radius: 18px;
      border: 1px solid var(--line);
      background: var(--surface-2);
      overflow: hidden;
    }
    .faq-item summary{
      list-style: none;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      padding: 18px 18px;
      font-weight: 800;
      cursor: pointer;
      outline: none;
    }
    .faq-item summary::-webkit-details-marker{ display: none; }
    .faq-item summary::after{
      content: "+";
      width: 28px;
      height: 28px;
      display: grid;
      place-items: center;
      border-radius: 999px;
      background: rgba(123,16,32,.08);
      color: var(--primary);
      font-size: 18px;
      line-height: 1;
      flex: 0 0 auto;
      transition: transform var(--transition), background-color var(--transition);
    }
    .faq-item[open] summary{
      border-bottom: 1px solid rgba(228,213,198,.85);
      background: var(--surface);
    }
    .faq-item[open] summary::after{
      content: "–";
      background: rgba(123,16,32,.12);
    }
    .faq-item .faq-body{
      padding: 16px 18px 18px;
      color: var(--muted);
      line-height: 1.85;
      background: var(--surface);
    }
    .faq-item .faq-body p{
      margin: 0;
    }

    .cta-section{
      padding: 18px 0 36px;
    }
    .cta-shell{
      padding: 30px;
      background:
        radial-gradient(900px 300px at 10% 0%, rgba(226,194,122,.16), transparent 50%),
        linear-gradient(135deg, var(--primary) 0%, #54111d 48%, #3f0d16 100%);
      color: #fff7ef;
      border: 1px solid rgba(255,255,255,.14);
      border-radius: 30px;
      box-shadow: var(--shadow);
      display: flex;
      justify-content: space-between;
      gap: 20px;
      align-items: center;
    }
    .cta-copy h2{
      margin: 0 0 10px;
      font-size: 28px;
      line-height: 1.2;
      font-weight: 900;
      letter-spacing: -.02em;
    }
    .cta-copy p{
      margin: 0;
      color: rgba(255,247,239,.82);
      max-width: 44rem;
      line-height: 1.8;
    }
    .cta-actions{
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      flex: 0 0 auto;
    }
    .cta-actions .ui-btn{
      min-width: 140px;
    }
    .cta-actions .ui-btn-secondary{
      background: rgba(255,255,255,.08);
      color: #fff;
      border-color: rgba(255,255,255,.18);
    }
    .cta-actions .ui-btn-secondary:hover{
      background: rgba(255,255,255,.12);
    }
    .cta-actions .ui-btn-primary{
      background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
      color: #26150f;
    }

    .empty-state{
      padding: 38px 0 24px;
    }
    .empty-card{
      padding: 36px 28px;
      text-align: center;
      max-width: 760px;
      margin: 0 auto;
    }
    .empty-card h1{
      margin: 0 0 12px;
      font-size: clamp(30px, 4vw, 44px);
      line-height: 1.15;
      font-weight: 900;
    }
    .empty-card p{
      margin: 0 auto 22px;
      color: var(--muted);
      max-width: 38rem;
      line-height: 1.85;
    }

    .footer{
      margin-top: 8px;
      padding: 26px 0 34px;
      border-top: 1px solid rgba(228,213,198,.86);
      background: rgba(248,240,231,.82);
    }
    .footer-shell{
      display: grid;
      grid-template-columns: 1.2fr .9fr .9fr;
      gap: 20px;
      align-items: start;
    }
    .footer-brand{
      display: grid;
      gap: 14px;
    }
    .footer-note{
      color: var(--muted);
      font-size: 14px;
      line-height: 1.85;
    }
    .footer-links{
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
      align-content: start;
    }
    .footer-links a{
      padding: 9px 13px;
      border-radius: 999px;
      border: 1px solid var(--line);
      background: var(--surface);
      color: var(--muted);
      font-weight: 600;
    }
    .footer-links a:hover,
    .footer-links a:focus-visible{
      color: var(--primary);
      border-color: rgba(123,16,32,.18);
      background: rgba(123,16,32,.04);
    }
    .legal{
      display: block;
      color: var(--muted);
    }
    .back-to-top{
      position: fixed;
      right: 18px;
      bottom: 18px;
      z-index: 90;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 108px;
      min-height: 44px;
      padding: 0 14px;
      border-radius: 999px;
      background: rgba(35,23,28,.92);
      color: #fff;
      box-shadow: 0 14px 28px rgba(18,10,14,.18);
      border: 1px solid rgba(255,255,255,.08);
      font-weight: 700;
    }
    .back-to-top:hover{
      transform: translateY(-2px);
      background: rgba(123,16,32,.96);
      color: #fff;
    }

    @media (max-width: 1280px){
      .container{
        width: min(var(--container), calc(100% - 32px));
      }
    }

    @media (max-width: 1024px){
      .nav-btn{
        display: inline-flex;
      }
      .site-nav{
        position: absolute;
        top: calc(100% + 12px);
        left: 0;
        right: 0;
        display: grid;
        gap: 8px;
        padding: 12px;
        border-radius: 22px;
        background: var(--surface);
        border: 1px solid var(--line);
        box-shadow: var(--shadow);
        opacity: 0;
        transform: translateY(-8px);
        pointer-events: none;
        margin-left: 0;
      }
      .site-nav a{
        padding: 12px 14px;
        background: var(--surface-2);
      }
      .nav-toggle:checked ~ .site-nav{
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
      }
      .header-inner{
        flex-wrap: wrap;
        padding: 12px 0;
      }
      .nav-cta{
        margin-left: auto;
      }
      .article-hero-grid,
      .content-grid,
      .footer-shell{
        grid-template-columns: 1fr;
      }
      .sidebar{
        position: static;
      }
      .updates-grid{
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
      .cta-shell{
        flex-direction: column;
        align-items: flex-start;
      }
    }

    @media (max-width: 768px){
      .article-hero{
        padding-top: 22px;
      }
      .article-hero-shell{
        border-radius: 28px;
      }
      .article-hero-grid{
        padding: 24px;
        gap: 22px;
      }
      .article-title{
        font-size: clamp(28px, 8vw, 42px);
        max-width: 100%;
      }
      .article-lead{
        font-size: 16px;
      }
      .article-card,
      .side-card,
      .faq-panel,
      .cta-shell{
        border-radius: 24px;
      }
      .article-card{
        padding: 22px;
      }
      .section-head{
        flex-direction: column;
        align-items: flex-start;
      }
      .section-head h2{
        font-size: 24px;
      }
      .updates-grid{
        grid-template-columns: 1fr;
      }
      .cta-shell{
        padding: 24px;
      }
      .cta-copy h2{
        font-size: 24px;
      }
      .footer-shell{
        gap: 16px;
      }
      .footer-links{
        justify-content: flex-start;
      }
    }

    @media (max-width: 520px){
      .container{
        width: min(var(--container), calc(100% - 24px));
      }
      .brand-text{
        font-size: 15px;
      }
      .brand-mark{
        width: 38px;
        height: 38px;
        border-radius: 12px;
      }
      .nav-cta{
        padding: 10px 14px;
        font-size: 14px;
      }
      .article-hero-grid{
        padding: 18px;
      }
      .article-meta-row{
        gap: 8px;
      }
      .meta-chip{
        width: 100%;
        justify-content: flex-start;
      }
      .article-actions,
      .cta-actions,
      .side-actions{
        width: 100%;
      }
      .ui-btn,
      .cta-actions .ui-btn{
        width: 100%;
      }
      .article-content{
        font-size: 16px;
      }
      .faq-item summary{
        padding: 16px;
        font-size: 15px;
      }
      .faq-item .faq-body{
        padding: 14px 16px 16px;
      }
      .footer{
        padding-bottom: 28px;
      }
      .footer-links{
        display: grid;
        grid-template-columns: 1fr 1fr;
        width: 100%;
      }
      .back-to-top{
        right: 14px;
        bottom: 14px;
        min-width: 96px;
      }
    }

/* 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}