/* roulang page: index */
:root{
      --bg:#f5f1e8;
      --bg-soft:#efe9de;
      --surface:#fffdf8;
      --surface-strong:#173328;
      --surface-dark:#10251e;
      --text:#203027;
      --muted:#6a756f;
      --line:rgba(28,48,39,.12);
      --line-strong:rgba(255,255,255,.12);
      --brand:#17362a;
      --brand-2:#234f3d;
      --accent:#b99359;
      --accent-2:#d7c08f;
      --white:#ffffff;
      --shadow:0 20px 50px rgba(17,34,27,.08);
      --shadow-strong:0 22px 42px rgba(16,34,27,.18);
      --radius:18px;
      --radius-lg:26px;
      --radius-sm:12px;
      --container:1240px;
      --gap:clamp(16px,2vw,26px);
      --section:clamp(64px,8vw,110px);
      --ease:cubic-bezier(.2,.8,.2,1);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(185,147,89,.10), transparent 30%),
        radial-gradient(circle at top right, rgba(23,54,42,.08), transparent 28%),
        linear-gradient(180deg,#fbf8f2 0%, #f5f1e8 42%, #f8f5ef 100%);
      line-height:1.7;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    img{display:block;max-width:100%;height:auto}
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    ::selection{background:rgba(185,147,89,.24);color:#10221b}
    .container{
      width:min(var(--container), calc(100% - 40px));
      margin:0 auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:1000;
      backdrop-filter:saturate(140%) blur(14px);
      background:rgba(247,243,236,.82);
      border-bottom:1px solid rgba(28,48,39,.08);
    }
    .nav-wrap{
      min-height:78px;
      display:flex;
      align-items:center;
      gap:20px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:14px;
      min-width:0;
      flex:0 0 auto;
    }
    .brand-mark{
      width:42px;height:42px;border-radius:14px;
      background:
        linear-gradient(145deg, rgba(23,54,42,1), rgba(35,79,61,1));
      position:relative;
      box-shadow:0 10px 24px rgba(17,34,27,.16);
      flex:0 0 auto;
    }
    .brand-mark::before,
    .brand-mark::after{
      content:"";
      position:absolute;
      inset:11px;
      border-radius:10px;
      border:1.5px solid rgba(255,255,255,.55);
    }
    .brand-mark::after{
      inset:16px 9px 9px 16px;
      border-color:rgba(185,147,89,.7);
      transform:rotate(16deg);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      min-width:0;
      line-height:1.15;
    }
    .brand-text strong{
      font-size:1.04rem;
      font-weight:800;
      letter-spacing:.02em;
      color:var(--brand);
      white-space:nowrap;
    }
    .brand-text span{
      font-size:.82rem;
      color:var(--muted);
      margin-top:4px;
      white-space:nowrap;
    }
    .site-nav{
      margin-left:auto;
      display:flex;
      align-items:center;
      gap:10px;
    }
    .nav-link{
      padding:11px 16px;
      border-radius:999px;
      color:var(--muted);
      border:1px solid transparent;
      transition:all .24s var(--ease);
      font-weight:600;
      letter-spacing:.01em;
    }
    .nav-link:hover,
    .nav-link:focus-visible{
      color:var(--brand);
      background:rgba(23,54,42,.06);
      border-color:rgba(23,54,42,.10);
      outline:none;
    }
    .nav-link.active{
      color:var(--white);
      background:var(--brand);
      box-shadow:0 10px 20px rgba(23,54,42,.16);
    }
    .nav-cta{
      margin-left:6px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:12px 18px;
      border-radius:999px;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      color:var(--white);
      font-weight:700;
      border:1px solid rgba(255,255,255,.08);
      box-shadow:0 14px 26px rgba(23,54,42,.18);
      transition:transform .24s var(--ease), box-shadow .24s var(--ease), filter .24s var(--ease);
      flex:0 0 auto;
    }
    .nav-cta:hover,
    .nav-cta:focus-visible{
      transform:translateY(-1px);
      box-shadow:0 18px 30px rgba(23,54,42,.22);
      outline:none;
    }
    .menu-toggle{
      display:none;
      margin-left:auto;
      align-items:center;
      justify-content:center;
      width:44px;height:44px;
      border-radius:14px;
      border:1px solid rgba(28,48,39,.12);
      background:rgba(255,255,255,.74);
      color:var(--brand);
      cursor:pointer;
      transition:all .22s var(--ease);
    }
    .menu-toggle:hover,
    .menu-toggle:focus-visible{
      background:#fff;
      border-color:rgba(23,54,42,.22);
      box-shadow:0 10px 24px rgba(17,34,27,.08);
      outline:none;
    }
    .menu-lines{
      width:18px;height:12px;position:relative;display:block;
    }
    .menu-lines::before,
    .menu-lines::after,
    .menu-lines span{
      content:"";
      position:absolute;
      left:0;
      width:100%;
      height:2px;
      border-radius:999px;
      background:currentColor;
      transition:transform .24s var(--ease), top .24s var(--ease), opacity .24s var(--ease);
    }
    .menu-lines::before{top:0}
    .menu-lines span{top:5px}
    .menu-lines::after{top:10px}
    .menu-toggle.is-open .menu-lines::before{top:5px;transform:rotate(45deg)}
    .menu-toggle.is-open .menu-lines span{opacity:0}
    .menu-toggle.is-open .menu-lines::after{top:5px;transform:rotate(-45deg)}

    .hero{
      position:relative;
      overflow:hidden;
      padding:24px 0 8px;
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg, rgba(245,241,232,.4), rgba(245,241,232,0)),
        radial-gradient(circle at 20% 20%, rgba(185,147,89,.12), transparent 22%),
        radial-gradient(circle at 82% 16%, rgba(23,54,42,.10), transparent 25%);
      pointer-events:none;
    }
    .hero-grid{
      position:relative;
      display:grid;
      grid-template-columns:1.08fr .92fr;
      gap:clamp(22px,4vw,54px);
      align-items:center;
      padding:28px 0 18px;
      min-height:calc(100vh - 120px);
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 14px;
      border-radius:999px;
      background:rgba(23,54,42,.08);
      color:var(--brand);
      font-size:.86rem;
      font-weight:700;
      letter-spacing:.02em;
      border:1px solid rgba(23,54,42,.08);
    }
    .eyebrow::before{
      content:"";
      width:8px;height:8px;border-radius:999px;
      background:var(--accent);
      box-shadow:0 0 0 5px rgba(185,147,89,.12);
    }
    .hero-copy h1{
      margin:18px 0 16px;
      font-size:clamp(2.4rem,5.1vw,4.8rem);
      line-height:1.04;
      letter-spacing:-.03em;
      color:var(--brand);
      text-wrap:balance;
    }
    .hero-copy p{
      margin:0;
      max-width:44rem;
      color:var(--muted);
      font-size:clamp(1rem,1.3vw,1.12rem);
    }
    .hero-actions{
      margin-top:28px;
      display:flex;
      flex-wrap:wrap;
      gap:14px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:48px;
      padding:0 20px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:700;
      letter-spacing:.01em;
      transition:transform .24s var(--ease), box-shadow .24s var(--ease), background .24s var(--ease), color .24s var(--ease), border-color .24s var(--ease);
      cursor:pointer;
      user-select:none;
    }
    .btn:hover,
    .btn:focus-visible{
      transform:translateY(-1px);
      outline:none;
    }
    .btn-primary{
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      color:#fff;
      box-shadow:0 16px 28px rgba(23,54,42,.18);
    }
    .btn-primary:hover,
    .btn-primary:focus-visible{
      box-shadow:0 18px 32px rgba(23,54,42,.24);
    }
    .btn-secondary{
      background:rgba(255,255,255,.58);
      color:var(--brand);
      border-color:rgba(23,54,42,.12);
    }
    .btn-secondary:hover,
    .btn-secondary:focus-visible{
      background:#fff;
      border-color:rgba(23,54,42,.22);
      box-shadow:0 14px 26px rgba(17,34,27,.08);
    }
    .hero-tags{
      margin-top:20px;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:36px;
      padding:0 14px;
      border-radius:999px;
      background:rgba(255,255,255,.74);
      border:1px solid rgba(28,48,39,.09);
      color:var(--brand);
      font-size:.9rem;
      font-weight:700;
      box-shadow:0 8px 20px rgba(17,34,27,.05);
    }
    .hero-visual{
      position:relative;
      min-height:560px;
      display:flex;
      align-items:flex-end;
      justify-content:center;
    }
    .hero-frame{
      position:relative;
      width:min(100%, 560px);
      aspect-ratio:4/5;
      border-radius:28px;
      overflow:hidden;
      box-shadow:var(--shadow-strong);
      border:1px solid rgba(255,255,255,.26);
      background:var(--brand);
    }
    .hero-frame img{
      width:100%;
      height:100%;
      object-fit:cover;
      transform:scale(1.02);
    }
    .hero-frame::after{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg, rgba(15,28,22,.12) 0%, rgba(15,28,22,.24) 48%, rgba(15,28,22,.60) 100%);
      pointer-events:none;
    }
    .floating-note{
      position:absolute;
      left:-8px;
      bottom:28px;
      z-index:2;
      width:min(82%, 330px);
      padding:18px 18px 16px;
      border-radius:20px;
      background:rgba(255,253,248,.92);
      border:1px solid rgba(28,48,39,.10);
      box-shadow:0 18px 38px rgba(17,34,27,.12);
      backdrop-filter:blur(10px);
    }
    .floating-note strong{
      display:block;
      font-size:1.02rem;
      color:var(--brand);
      margin-bottom:8px;
    }
    .floating-note p{
      margin:0;
      color:var(--muted);
      font-size:.94rem;
    }
    .hero-metrics{
      position:absolute;
      right:-10px;
      top:32px;
      z-index:3;
      display:grid;
      gap:12px;
      width:220px;
    }
    .metric{
      padding:16px 16px 15px;
      border-radius:18px;
      background:rgba(23,54,42,.92);
      color:#fff;
      box-shadow:0 18px 32px rgba(17,34,27,.18);
      border:1px solid rgba(255,255,255,.08);
    }
    .metric:nth-child(2){
      background:rgba(255,255,255,.92);
      color:var(--brand);
    }
    .metric span{
      display:block;
      font-size:.82rem;
      opacity:.88;
    }
    .metric strong{
      display:block;
      margin-top:8px;
      font-size:1.08rem;
      line-height:1.35;
    }

    .stats-strip{
      margin-top:6px;
      padding:0 0 18px;
    }
    .stats-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:16px;
    }
    .stat{
      padding:20px 22px;
      background:rgba(255,255,255,.78);
      border:1px solid rgba(28,48,39,.08);
      border-radius:22px;
      box-shadow:0 12px 28px rgba(17,34,27,.05);
      display:flex;
      align-items:flex-start;
      gap:14px;
    }
    .stat-mark{
      width:44px;height:44px;border-radius:14px;
      background:rgba(23,54,42,.08);
      display:grid;
      place-items:center;
      color:var(--brand);
      font-weight:800;
      flex:0 0 auto;
    }
    .stat strong{
      display:block;
      color:var(--brand);
      font-size:1rem;
      margin-bottom:4px;
    }
    .stat span{
      color:var(--muted);
      font-size:.95rem;
    }

    .section{
      padding:var(--section) 0;
      position:relative;
    }
    .section-soft{
      background:linear-gradient(180deg, rgba(255,255,255,.22), rgba(255,255,255,.08));
    }
    .section-dark{
      background:
        linear-gradient(180deg, rgba(16,37,30,.96), rgba(23,54,42,.98)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      color:#fff;
    }
    .section-head{
      display:grid;
      gap:14px;
      max-width:780px;
      margin-bottom:28px;
    }
    .section-head h2{
      margin:0;
      font-size:clamp(1.7rem,3vw,2.6rem);
      line-height:1.12;
      letter-spacing:-.02em;
      color:var(--brand);
      text-wrap:balance;
    }
    .section-head p{
      margin:0;
      color:var(--muted);
      font-size:1rem;
      max-width:56rem;
    }
    .section-dark .section-head h2,
    .section-dark .section-head p{
      color:rgba(255,255,255,.94);
    }
    .section-dark .eyebrow{
      background:rgba(255,255,255,.08);
      color:#fff;
      border-color:rgba(255,255,255,.08);
    }

    .overview-grid{
      display:grid;
      grid-template-columns:1.3fr .7fr .7fr;
      gap:18px;
      align-items:stretch;
    }
    .card{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius-lg);
      background:var(--surface);
      border:1px solid rgba(28,48,39,.09);
      box-shadow:var(--shadow);
      transition:transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
    }
    .card:hover,
    .card:focus-within{
      transform:translateY(-3px);
      box-shadow:0 24px 50px rgba(17,34,27,.11);
      border-color:rgba(23,54,42,.16);
    }
    .card-pad{padding:24px}
    .card-dark{
      background:linear-gradient(160deg, #1a3c2f, #0f221b);
      color:#fff;
      border-color:rgba(255,255,255,.08);
    }
    .card-dark .muted,
    .card-dark p,
    .card-dark li{color:rgba(255,255,255,.82)}
    .card h3{
      margin:0 0 12px;
      font-size:1.18rem;
      line-height:1.25;
      color:inherit;
    }
    .card p{
      margin:0;
      color:var(--muted);
    }
    .bullet-list{
      list-style:none;
      padding:0;
      margin:18px 0 0;
      display:grid;
      gap:10px;
    }
    .bullet-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:var(--muted);
    }
    .bullet-list li::before{
      content:"";
      width:9px;height:9px;
      margin-top:.55em;
      border-radius:999px;
      background:var(--accent);
      flex:0 0 auto;
      box-shadow:0 0 0 4px rgba(185,147,89,.12);
    }
    .card-figure{
      position:relative;
      min-height:180px;
      overflow:hidden;
      border-radius:24px 24px 0 0;
    }
    .card-figure img{
      width:100%;
      height:100%;
      min-height:240px;
      object-fit:cover;
    }
    .card-overlay{
      position:absolute;
      inset:auto 0 0 0;
      padding:18px 18px 16px;
      background:linear-gradient(180deg, transparent, rgba(12,24,19,.76));
      color:#fff;
    }
    .card-overlay strong{
      display:block;
      font-size:1.05rem;
      margin-bottom:6px;
    }
    .card-overlay span{
      display:block;
      font-size:.92rem;
      opacity:.84;
    }

    .entry-grid{
      display:grid;
      grid-template-columns:1.15fr .92fr .92fr;
      gap:18px;
    }
    .entry-card{
      display:flex;
      flex-direction:column;
      min-height:100%;
      text-decoration:none;
    }
    .entry-card .thumb{
      position:relative;
      aspect-ratio:16/10;
      overflow:hidden;
      background:#d9d0c2;
    }
    .entry-card .thumb img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:transform .42s var(--ease);
    }
    .entry-card:hover .thumb img,
    .entry-card:focus-visible .thumb img{
      transform:scale(1.04);
    }
    .entry-body{
      padding:22px;
      display:grid;
      gap:12px;
      flex:1 1 auto;
    }
    .mini-meta{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      align-items:center;
    }
    .chip{
      display:inline-flex;
      align-items:center;
      min-height:30px;
      padding:0 10px;
      border-radius:999px;
      background:rgba(23,54,42,.08);
      color:var(--brand);
      font-size:.82rem;
      font-weight:700;
      border:1px solid rgba(23,54,42,.08);
    }
    .entry-card h3{
      margin:0;
      font-size:1.16rem;
      line-height:1.3;
      color:var(--brand);
    }
    .entry-card p{
      margin:0;
      color:var(--muted);
    }
    .entry-card .action{
      margin-top:auto;
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--brand);
      font-weight:700;
    }
    .entry-card .action::after{
      content:"→";
      transition:transform .24s var(--ease);
    }
    .entry-card:hover .action::after,
    .entry-card:focus-visible .action::after{
      transform:translateX(3px);
    }
    .entry-feature{
      grid-row:span 2;
      background:linear-gradient(180deg, #fff, #f8f5ee);
    }
    .entry-feature .thumb{
      aspect-ratio:16/12;
    }
    .entry-feature .entry-body{
      padding:24px;
    }
    .entry-light{
      background:#fff;
    }

    .story-grid{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:18px;
    }
    .story-card{
      display:grid;
      grid-template-columns:1fr;
      overflow:hidden;
      border-radius:28px;
      background:var(--surface);
      border:1px solid rgba(28,48,39,.09);
      box-shadow:var(--shadow);
    }
    .story-card figure{
      margin:0;
      position:relative;
      overflow:hidden;
      aspect-ratio:16/9;
    }
    .story-card figure img{
      width:100%;
      height:100%;
      object-fit:cover;
    }
    .story-content{
      padding:24px;
      display:grid;
      gap:12px;
    }
    .story-content h3{
      margin:0;
      color:var(--brand);
      font-size:1.22rem;
    }
    .story-content p{
      margin:0;
      color:var(--muted);
    }
    .story-stack{
      display:grid;
      gap:18px;
    }
    .story-mini{
      display:grid;
      grid-template-columns:140px 1fr;
      gap:0;
      border-radius:24px;
      overflow:hidden;
      background:var(--surface);
      border:1px solid rgba(28,48,39,.09);
      box-shadow:var(--shadow);
    }
    .story-mini figure{
      margin:0;
      min-height:100%;
    }
    .story-mini figure img{
      width:100%;
      height:100%;
      object-fit:cover;
    }
    .story-mini .story-content{
      padding:20px 20px 18px;
    }

    .timeline{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .step{
      padding:24px;
      border-radius:24px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.10);
      box-shadow:0 16px 34px rgba(0,0,0,.08);
      min-height:210px;
    }
    .step-no{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:42px;height:42px;
      border-radius:14px;
      background:rgba(255,255,255,.10);
      color:#fff;
      font-weight:800;
      margin-bottom:16px;
    }
    .step h3{
      margin:0 0 10px;
      color:#fff;
      font-size:1.16rem;
    }
    .step p{
      margin:0;
      color:rgba(255,255,255,.84);
    }
    .step small{
      display:block;
      margin-top:14px;
      color:rgba(255,255,255,.68);
    }

    .quality-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:18px;
    }
    .quality-card{
      padding:22px;
      border-radius:22px;
      background:rgba(255,255,255,.76);
      border:1px solid rgba(28,48,39,.09);
      box-shadow:var(--shadow);
      min-height:180px;
    }
    .quality-card strong{
      display:block;
      font-size:1.08rem;
      color:var(--brand);
      margin-bottom:10px;
    }
    .quality-card p{
      margin:0;
      color:var(--muted);
    }

    .faq-wrap{
      display:grid;
      grid-template-columns:minmax(0,1fr);
      gap:14px;
      max-width:920px;
    }
    .faq-item{
      border-radius:20px;
      overflow:hidden;
      background:var(--surface);
      border:1px solid rgba(28,48,39,.09);
      box-shadow:0 12px 28px rgba(17,34,27,.05);
    }
    .faq-q{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      padding:18px 20px;
      border:0;
      background:transparent;
      color:var(--brand);
      cursor:pointer;
      text-align:left;
      font-weight:800;
      font-size:1rem;
    }
    .faq-q span{
      display:inline-flex;
      align-items:center;
      gap:10px;
    }
    .faq-q span::before{
      content:"";
      width:10px;height:10px;border-radius:999px;
      background:var(--accent);
      box-shadow:0 0 0 4px rgba(185,147,89,.12);
      flex:0 0 auto;
    }
    .faq-icon{
      width:34px;height:34px;
      border-radius:12px;
      display:grid;
      place-items:center;
      background:rgba(23,54,42,.06);
      color:var(--brand);
      flex:0 0 auto;
      font-size:1.1rem;
      transition:transform .24s var(--ease), background .24s var(--ease);
    }
    .faq-item.open .faq-icon{
      transform:rotate(45deg);
      background:rgba(23,54,42,.12);
    }
    .faq-a{
      display:none;
      padding:0 20px 18px;
      color:var(--muted);
    }
    .faq-item.open .faq-a{
      display:block;
    }

    .cta-band{
      position:relative;
      overflow:hidden;
      border-radius:32px;
      background:
        linear-gradient(135deg, rgba(16,37,30,.96), rgba(23,54,42,.96)),
        url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      color:#fff;
      box-shadow:0 24px 50px rgba(17,34,27,.16);
    }
    .cta-band::before{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(140deg, rgba(255,255,255,.05), rgba(255,255,255,0));
      pointer-events:none;
    }
    .cta-inner{
      position:relative;
      padding:clamp(28px,4vw,44px);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
      flex-wrap:wrap;
    }
    .cta-inner h2{
      margin:0 0 10px;
      font-size:clamp(1.6rem,2.8vw,2.3rem);
      line-height:1.16;
      text-wrap:balance;
    }
    .cta-inner p{
      margin:0;
      color:rgba(255,255,255,.82);
      max-width:52rem;
    }
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
    }
    .btn-light{
      background:#fff;
      color:var(--brand);
      box-shadow:0 14px 26px rgba(0,0,0,.14);
    }
    .btn-light:hover,
    .btn-light:focus-visible{
      background:#f5f1e8;
    }
    .btn-ghost{
      color:#fff;
      background:transparent;
      border-color:rgba(255,255,255,.20);
    }
    .btn-ghost:hover,
    .btn-ghost:focus-visible{
      background:rgba(255,255,255,.08);
      border-color:rgba(255,255,255,.30);
    }

    .site-footer{
      padding:30px 0 38px;
      border-top:1px solid rgba(28,48,39,.10);
      background:rgba(255,255,255,.32);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr;
      gap:24px;
      align-items:end;
    }
    .footer-brand{
      display:grid;
      gap:10px;
    }
    .footer-brand strong{
      font-size:1.08rem;
      color:var(--brand);
    }
    .footer-brand p{
      margin:0;
      color:var(--muted);
      max-width:48rem;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      justify-content:flex-end;
    }
    .footer-links a{
      padding:10px 14px;
      border-radius:999px;
      color:var(--brand);
      background:rgba(23,54,42,.06);
      border:1px solid rgba(23,54,42,.08);
      transition:all .22s var(--ease);
    }
    .footer-links a:hover,
    .footer-links a:focus-visible{
      background:#fff;
      border-color:rgba(23,54,42,.16);
      outline:none;
    }
    .footer-note{
      margin-top:18px;
      padding-top:18px;
      border-top:1px solid rgba(28,48,39,.08);
      color:var(--muted);
      font-size:.92rem;
      display:flex;
      flex-wrap:wrap;
      gap:8px 16px;
      justify-content:space-between;
    }

    .skip-link{
      position:absolute;
      left:-9999px;
      top:12px;
      z-index:2000;
      padding:10px 14px;
      border-radius:12px;
      background:#fff;
      color:var(--brand);
      box-shadow:var(--shadow);
    }
    .skip-link:focus{left:16px}
    .subtle-divider{
      height:1px;
      background:linear-gradient(90deg, transparent, rgba(28,48,39,.12), transparent);
      margin:0;
      border:0;
    }

    @media (max-width: 1120px){
      .hero-grid{grid-template-columns:1fr;min-height:auto;padding-top:18px}
      .hero-visual{min-height:520px;order:-1}
      .overview-grid,
      .entry-grid,
      .story-grid,
      .quality-grid,
      .timeline,
      .stats-grid,
      .footer-grid{grid-template-columns:1fr}
      .entry-feature{grid-row:auto}
      .story-mini{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
      .hero-metrics{right:0;top:18px;width:min(240px, calc(100% - 22px))}
    }
    @media (max-width: 920px){
      .menu-toggle{display:inline-flex}
      .site-nav{
        position:absolute;
        top:78px;
        left:20px;
        right:20px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        gap:8px;
        padding:14px;
        border-radius:20px;
        background:rgba(255,253,248,.96);
        box-shadow:0 20px 48px rgba(17,34,27,.12);
        border:1px solid rgba(28,48,39,.08);
      }
      .site-nav.is-open{display:flex}
      .nav-link{width:100%;text-align:center}
      .nav-cta{display:none}
      .nav-wrap{position:relative}
      .hero-frame{width:100%;max-width:520px}
    }
    @media (max-width: 640px){
      .container{width:min(var(--container), calc(100% - 28px))}
      .nav-wrap{min-height:72px}
      .brand-text strong{font-size:.98rem}
      .brand-text span{font-size:.76rem}
      .hero{padding-top:10px}
      .hero-copy h1{font-size:clamp(2rem, 11vw, 3.2rem)}
      .hero-copy p{font-size:.98rem}
      .hero-actions{gap:10px}
      .btn{width:100%}
      .tag{width:auto}
      .hero-visual{min-height:470px}
      .hero-frame{aspect-ratio:5/6;border-radius:22px}
      .floating-note{left:10px;right:10px;bottom:16px;width:auto}
      .hero-metrics{
        position:static;
        width:100%;
        margin-bottom:14px;
      }
      .metric{box-shadow:none}
      .card-pad,.entry-body,.story-content,.quality-card,.step,.faq-q,.faq-a,.cta-inner{padding-left:18px;padding-right:18px}
      .cta-inner{padding-top:26px;padding-bottom:26px}
      .faq-q{font-size:.98rem}
      .footer-note{flex-direction:column}
    }
    @media (prefers-reduced-motion: reduce){
      html{scroll-behavior:auto}
      *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
    }

/* roulang page: category1 */
:root{
      --green:#153f36;
      --green-deep:#0d2e29;
      --green-soft:#e8f0eb;
      --gold:#b4874b;
      --gold-light:#f2e8d7;
      --ink:#1f2926;
      --muted:#697570;
      --paper:#fbfaf7;
      --mist:#f1f3ef;
      --white:#fff;
      --line:#dfe5df;
      --radius:18px;
      --radius-sm:12px;
      --shadow:0 15px 38px rgba(24,52,43,.08);
      --shadow-hover:0 20px 45px rgba(24,52,43,.14);
      --container:1240px;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;
      color:var(--ink);
      background:var(--paper);
      line-height:1.75;
      font-size:16px;
    }
    img{display:block;max-width:100%;width:100%;object-fit:cover}
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    :focus-visible{outline:3px solid rgba(180,135,75,.45);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:20;
      background:rgba(251,250,247,.94);
      border-bottom:1px solid rgba(223,229,223,.9);
      backdrop-filter:blur(16px)
    }
    .header-inner{height:82px;display:flex;align-items:center;justify-content:space-between;gap:30px}
    .brand{display:inline-flex;align-items:center;gap:12px;min-width:245px}
    .brand-mark{
      width:38px;height:38px;border-radius:11px 11px 11px 4px;
      background:var(--green);position:relative;display:inline-block
    }
    .brand-mark:before,.brand-mark:after{content:"";position:absolute;background:var(--gold);border-radius:50%}
    .brand-mark:before{width:8px;height:8px;top:9px;left:9px}
    .brand-mark:after{width:14px;height:4px;right:7px;bottom:9px;border-radius:5px}
    .brand-text{display:flex;flex-direction:column;line-height:1.25}
    .brand-text strong{font-size:18px;letter-spacing:.04em;color:var(--green-deep)}
    .brand-text span{font-size:11px;color:var(--muted);letter-spacing:.05em;margin-top:3px}
    .site-nav{display:flex;align-items:center;gap:7px}
    .nav-link{padding:10px 17px;border-radius:999px;color:#53615b;font-size:14px;transition:.25s ease}
    .nav-link:hover{color:var(--green);background:var(--green-soft)}
    .nav-link.active{color:var(--white);background:var(--green);box-shadow:0 6px 14px rgba(21,63,54,.16)}
    .header-action{display:inline-flex;align-items:center;gap:8px;padding:12px 18px;background:var(--gold);color:var(--white);border-radius:999px;font-size:14px;font-weight:600;transition:.25s ease;white-space:nowrap}
    .header-action:hover{background:#9e733c;transform:translateY(-2px)}
    .menu-toggle{display:none;background:var(--green);color:#fff;border-radius:10px;width:42px;height:42px;font-size:21px}
    .page-banner{
      min-height:390px;display:flex;align-items:center;position:relative;overflow:hidden;
      background:linear-gradient(90deg,rgba(13,46,41,.92),rgba(13,46,41,.66)),url('/assets/images/backpic/back-2.webp') center/cover
    }
    .page-banner:after{content:"";position:absolute;right:-90px;bottom:-150px;width:420px;height:420px;border:1px solid rgba(242,232,215,.28);border-radius:50%}
    .banner-content{position:relative;z-index:1;color:#fff;padding:72px 0}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--gold-light);font-size:13px;letter-spacing:.12em;font-weight:600;margin-bottom:20px}
    .eyebrow:before{content:"";width:28px;height:1px;background:var(--gold)}
    .banner-content h1{font-size:clamp(36px,5vw,62px);line-height:1.18;letter-spacing:-.04em;max-width:760px;margin-bottom:20px}
    .banner-content p{max-width:650px;color:rgba(255,255,255,.78);font-size:17px}
    .breadcrumb{padding:22px 0 0;color:var(--muted);font-size:13px}
    .breadcrumb a{color:var(--green)}
    .main-section{padding:76px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:30px}
    .section-head h2{font-size:32px;line-height:1.3;letter-spacing:-.03em;color:var(--green-deep)}
    .section-head p{max-width:510px;color:var(--muted);font-size:14px}
    .filter-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;border:1px solid var(--line);background:#fff;border-radius:var(--radius);padding:15px 18px;margin-bottom:32px}
    .filter-list{display:flex;gap:9px;flex-wrap:wrap}
    .filter-chip{border:1px solid var(--line);background:var(--paper);color:var(--muted);padding:7px 15px;border-radius:999px;font-size:13px;transition:.25s ease}
    .filter-chip:hover,.filter-chip.active{background:var(--green);border-color:var(--green);color:#fff}
    .filter-note{font-size:13px;color:var(--muted);white-space:nowrap}
    .content-layout{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:34px;align-items:start}
    .content-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
    .content-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.28s ease;box-shadow:0 5px 17px rgba(24,52,43,.035)}
    .content-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#c5d2c8}
    .content-card.featured{grid-column:span 2;display:grid;grid-template-columns:1.1fr 1fr}
    .card-image{height:196px;overflow:hidden;background:var(--green-soft)}
    .featured .card-image{height:100%;min-height:275px}
    .card-image img{height:100%;transition:transform .5s ease}
    .content-card:hover .card-image img{transform:scale(1.035)}
    .card-body{padding:23px 24px 24px}
    .card-tag{display:inline-flex;padding:4px 10px;border-radius:999px;background:var(--gold-light);color:#896433;font-size:12px;margin-bottom:13px}
    .card-body h3{font-size:21px;line-height:1.45;color:var(--green-deep);margin-bottom:9px}
    .card-body p{font-size:14px;color:var(--muted);line-height:1.8;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
    .card-meta{display:flex;align-items:center;justify-content:space-between;margin-top:20px;padding-top:14px;border-top:1px solid #edf0ed;color:#8a948f;font-size:12px}
    .card-meta a{color:var(--green);font-weight:600}
    .side-panel{display:flex;flex-direction:column;gap:20px}
    .side-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
    .side-box.dark{background:var(--green);color:#fff;border-color:var(--green)}
    .side-box h3{font-size:18px;margin-bottom:15px;color:var(--green-deep)}
    .dark h3{color:#fff}
    .side-box p{font-size:13px;color:var(--muted);line-height:1.8}
    .dark p{color:rgba(255,255,255,.7)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
    .tag-cloud span{font-size:12px;padding:6px 10px;background:var(--mist);border-radius:8px;color:#5c6962}
    .dark .tag-cloud span{background:rgba(255,255,255,.1);color:#e9eee9}
    .side-list{list-style:none;display:grid;gap:13px}
    .side-list li{display:flex;gap:10px;font-size:13px;line-height:1.55}
    .side-list b{color:var(--gold);font-size:12px}
    .side-list a:hover{color:var(--gold)}
    .trust-section{background:var(--mist);padding:65px 0}
    .trust-grid{display:grid;grid-template-columns:1.25fr repeat(3,1fr);gap:18px;align-items:stretch}
    .trust-intro{background:var(--green);color:#fff;border-radius:var(--radius);padding:30px}
    .trust-intro h2{font-size:27px;line-height:1.35;margin-bottom:14px}
    .trust-intro p{font-size:14px;color:rgba(255,255,255,.72)}
    .stat-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:27px 22px;display:flex;flex-direction:column;justify-content:center}
    .stat-box strong{font-size:34px;color:var(--green);line-height:1.2}
    .stat-box span{font-size:13px;color:var(--muted);margin-top:8px}
    .process-section{padding:78px 0}
    .process-list{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
    .process-item{position:relative;padding:27px 25px 8px 0;border-right:1px solid var(--line);margin-right:25px}
    .process-item:last-child{border:0;margin-right:0}
    .process-number{display:inline-flex;width:34px;height:34px;border-radius:50%;background:var(--gold-light);color:#8d6636;align-items:center;justify-content:center;font-weight:700;font-size:13px;margin-bottom:17px}
    .process-item h3{font-size:18px;color:var(--green-deep);margin-bottom:8px}
    .process-item p{font-size:13px;color:var(--muted);line-height:1.8}
    .faq-section{background:#fff;padding:76px 0}
    .faq-wrap{max-width:850px;margin:0 auto}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;background:none;text-align:left;padding:21px 4px;display:flex;justify-content:space-between;align-items:center;color:var(--green-deep);font-weight:600;font-size:16px}
    .faq-question span:last-child{font-size:22px;color:var(--gold);font-weight:400;transition:.25s}
    .faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease;color:var(--muted);font-size:14px;line-height:1.9}
    .faq-item.open .faq-answer{max-height:150px;padding:0 35px 20px 4px}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta-section{padding:68px 0}
    .cta-box{border-radius:24px;background:var(--green-deep);color:#fff;padding:48px 55px;display:flex;align-items:center;justify-content:space-between;gap:30px;position:relative;overflow:hidden}
    .cta-box:after{content:"";position:absolute;width:250px;height:250px;border:1px solid rgba(242,232,215,.2);border-radius:50%;right:7%;top:-135px}
    .cta-box h2{font-size:31px;line-height:1.35;position:relative;z-index:1;margin-bottom:8px}
    .cta-box p{color:rgba(255,255,255,.7);font-size:14px;position:relative;z-index:1}
    .cta-button{position:relative;z-index:1;display:inline-flex;padding:14px 23px;border-radius:999px;background:var(--gold);color:#fff;font-weight:600;white-space:nowrap;transition:.25s}
    .cta-button:hover{background:#d09d59;transform:translateY(-2px)}
    .site-footer{background:#102f2a;color:#fff;padding:55px 0 24px}
    .footer-grid{display:flex;justify-content:space-between;gap:40px;padding-bottom:42px;border-bottom:1px solid rgba(255,255,255,.13)}
    .footer-brand .brand-text strong{color:#fff}
    .footer-brand .brand-text span{color:rgba(255,255,255,.55)}
    .footer-brand p{max-width:390px;color:rgba(255,255,255,.62);font-size:13px;margin-top:18px;line-height:1.9}
    .footer-links{display:flex;gap:25px;align-items:flex-start;padding-top:7px}
    .footer-links a{font-size:13px;color:rgba(255,255,255,.72);transition:.2s}
    .footer-links a:hover{color:#e7c58e}
    .footer-note{display:flex;justify-content:space-between;padding-top:20px;color:rgba(255,255,255,.42);font-size:12px}
    @media(max-width:1024px){
      .header-action{display:none}
      .content-layout{grid-template-columns:1fr}
      .side-panel{display:grid;grid-template-columns:repeat(2,1fr)}
      .trust-grid{grid-template-columns:repeat(3,1fr)}
      .trust-intro{grid-column:span 3}
    }
    @media(max-width:768px){
      .container{width:min(100% - 34px,var(--container))}
      .header-inner{height:70px}
      .brand{min-width:auto}
      .site-nav{display:none;position:absolute;left:17px;right:17px;top:78px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .site-nav.show{display:flex}
      .nav-link{text-align:center}
      .menu-toggle{display:block}
      .page-banner{min-height:340px}
      .banner-content{padding:58px 0}
      .banner-content h1{font-size:40px}
      .section-head{display:block}
      .section-head h2{font-size:28px;margin-bottom:10px}
      .filter-bar{display:block}
      .filter-note{margin-top:13px}
      .content-card.featured{display:block}
      .featured .card-image{height:230px;min-height:0}
      .process-list{grid-template-columns:repeat(2,1fr);border-top:0;gap:20px}
      .process-item{border-top:1px solid var(--line);border-right:0;margin:0;padding:22px 12px 8px 0}
      .trust-grid{grid-template-columns:1fr 1fr}
      .trust-intro{grid-column:span 2}
      .cta-box{display:block;padding:38px 28px}
      .cta-button{margin-top:23px}
      .footer-grid{display:block}
      .footer-links{margin-top:28px;flex-wrap:wrap}
    }
    @media(max-width:520px){
      body{font-size:15px}
      .brand-text strong{font-size:16px}
      .brand-text span{font-size:10px}
      .brand-mark{width:34px;height:34px}
      .banner-content h1{font-size:34px}
      .banner-content p{font-size:15px}
      .main-section,.process-section,.faq-section{padding:58px 0}
      .content-grid{grid-template-columns:1fr}
      .content-card.featured{grid-column:auto}
      .side-panel{display:flex}
      .trust-grid{grid-template-columns:1fr 1fr}
      .trust-intro{grid-column:span 2;padding:24px}
      .trust-intro h2{font-size:24px}
      .stat-box{padding:21px 15px}
      .stat-box strong{font-size:28px}
      .process-list{grid-template-columns:1fr}
      .cta-box h2{font-size:26px}
      .footer-note{display:block}
      .footer-note span{display:block;margin-top:7px}
    }