/* roulang page: index */
:root{
      --bg: #f4f4f2;
      --bg-soft: #fbfaf8;
      --surface: rgba(255,255,255,.82);
      --surface-strong: #ffffff;
      --ink: #141414;
      --ink-2: #303030;
      --muted: #6f6a63;
      --line: rgba(20,20,20,.10);
      --line-strong: rgba(20,20,20,.16);
      --brand: #d9831f;
      --brand-2: #ffad47;
      --brand-ink: #1a1208;
      --warm: #fff4e6;
      --deep: #111111;
      --deep-2: #191919;
      --glow: 0 24px 70px rgba(12, 12, 12, .14);
      --shadow: 0 18px 40px rgba(25, 21, 16, .10);
      --shadow-soft: 0 12px 25px rgba(25, 21, 16, .08);
      --radius-sm: 10px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-xl: 30px;
      --container: 1220px;
      --gutter: 24px;
      --space-1: 6px;
      --space-2: 10px;
      --space-3: 14px;
      --space-4: 18px;
      --space-5: 24px;
      --space-6: 32px;
      --space-7: 44px;
      --space-8: 60px;
      --space-9: 84px;
      --ease: cubic-bezier(.2,.8,.2,1);
    }

    *{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(--ink);
      background:
        radial-gradient(1200px 500px at 10% -10%, rgba(217,131,31,.08), transparent 60%),
        radial-gradient(1000px 400px at 90% 0%, rgba(255,173,71,.10), transparent 55%),
        linear-gradient(180deg, #faf9f6 0%, #f5f4f1 42%, #f2f1ee 100%);
      line-height:1.8;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
      min-width:320px;
    }
    img{max-width:100%;display:block}
    a{color:inherit;text-decoration:none}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(217,131,31,.22);color:var(--ink)}
    .container{
      width:min(var(--container), calc(100% - 2*var(--gutter)));
      margin:0 auto;
    }
    .skip-link{
      position:absolute;
      left:-9999px;
      top:10px;
      z-index:1000;
      padding:10px 14px;
      background:var(--deep);
      color:#fff;
      border-radius:999px;
    }
    .skip-link:focus{left:16px}
    .site-header{
      position:sticky;
      top:0;
      z-index:200;
      backdrop-filter:saturate(160%) blur(14px);
      background:rgba(247,246,243,.82);
      border-bottom:1px solid rgba(20,20,20,.08);
      transition:box-shadow .25s var(--ease), transform .25s var(--ease), background .25s var(--ease);
    }
    .site-header.is-scrolled{
      box-shadow:0 10px 30px rgba(20,20,20,.08);
      background:rgba(248,247,244,.92);
    }
    .header-inner{
      min-height:80px;
      display:flex;
      align-items:center;
      gap:18px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      flex:0 0 auto;
    }
    .brand-mark{
      width:42px;height:42px;
      border-radius:14px;
      background:
        radial-gradient(circle at 30% 30%, rgba(255,255,255,.88), rgba(255,255,255,0) 32%),
        linear-gradient(145deg, #232323, #0e0e0e);
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.08), 0 10px 24px rgba(0,0,0,.18);
      position:relative;
      overflow:hidden;
      flex:none;
    }
    .brand-mark:before{
      content:"";
      position:absolute;
      inset:10px 11px 10px 12px;
      background:linear-gradient(145deg, var(--brand), #ffbd63);
      clip-path:polygon(18% 8%, 100% 50%, 18% 92%, 18% 8%);
      filter:drop-shadow(0 2px 4px rgba(0,0,0,.18));
    }
    .brand-mark:after{
      content:"";
      position:absolute;
      inset:0;
      border-radius:14px;
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.05);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.15;
      min-width:0;
    }
    .brand-text strong{
      font-size:1.02rem;
      font-weight:800;
      letter-spacing:.2px;
      white-space:nowrap;
    }
    .brand-text span{
      font-size:.78rem;
      color:var(--muted);
      white-space:nowrap;
    }

    .nav-wrap{
      flex:1 1 auto;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      min-width:0;
    }
    .nav-toggle{
      display:none;
      width:44px;
      height:44px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.7);
      border-radius:14px;
      align-items:center;
      justify-content:center;
      cursor:pointer;
      transition:transform .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
      flex:none;
    }
    .nav-toggle:hover{transform:translateY(-1px);border-color:rgba(217,131,31,.35)}
    .nav-toggle:focus-visible{outline:none;box-shadow:0 0 0 4px rgba(217,131,31,.18)}
    .nav-toggle span{
      position:relative;
      width:18px;height:14px;
      display:block;
    }
    .nav-toggle span:before,
    .nav-toggle span:after,
    .nav-toggle span i{
      content:"";
      position:absolute;
      left:0;
      width:100%;
      height:2px;
      border-radius:999px;
      background:var(--deep);
      transition:transform .25s var(--ease), top .25s var(--ease), opacity .25s var(--ease);
    }
    .nav-toggle span:before{top:0}
    .nav-toggle span i{top:6px}
    .nav-toggle span:after{top:12px}
    body.menu-open .nav-toggle span:before{top:6px;transform:rotate(45deg)}
    body.menu-open .nav-toggle span i{opacity:0}
    body.menu-open .nav-toggle span:after{top:6px;transform:rotate(-45deg)}

    .nav{
      display:flex;
      align-items:center;
      gap:6px;
      flex-wrap:wrap;
    }
    .nav a{
      position:relative;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:12px 14px;
      color:var(--ink-2);
      border-radius:999px;
      transition:background .2s var(--ease), color .2s var(--ease), transform .2s var(--ease);
      font-weight:600;
      letter-spacing:.1px;
      white-space:nowrap;
    }
    .nav a:before{
      content:"";
      position:absolute;
      inset:auto 16px 8px;
      height:2px;
      border-radius:999px;
      background:linear-gradient(90deg, var(--brand), var(--brand-2));
      transform:scaleX(0);
      transform-origin:left;
      transition:transform .22s var(--ease);
    }
    .nav a:hover,
    .nav a:focus-visible{
      background:rgba(217,131,31,.08);
      color:var(--deep);
      transform:translateY(-1px);
      outline:none;
    }
    .nav a:hover:before,
    .nav a:focus-visible:before,
    .nav a.active:before{transform:scaleX(1)}
    .nav a.active{
      color:var(--deep);
      background:rgba(217,131,31,.10);
    }

    .header-cta{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:46px;
      padding:0 18px;
      border-radius:999px;
      background:linear-gradient(135deg, var(--brand), var(--brand-2));
      color:#1f1409;
      font-weight:800;
      border:1px solid rgba(255,255,255,.55);
      box-shadow:0 12px 30px rgba(217,131,31,.18);
      transition:transform .2s var(--ease), box-shadow .2s var(--ease), filter .2s var(--ease);
      flex:none;
    }
    .header-cta:hover,
    .header-cta:focus-visible{
      transform:translateY(-2px);
      box-shadow:0 16px 34px rgba(217,131,31,.24);
      outline:none;
      filter:saturate(1.04);
    }

    .mobile-panel{
      display:flex;
      align-items:center;
      gap:12px;
      flex:1 1 auto;
      min-width:0;
      justify-content:flex-end;
    }

    .hero{
      position:relative;
      padding:28px 0 0;
    }
    .hero-shell{
      position:relative;
      overflow:hidden;
      border-radius:30px;
      background:
        linear-gradient(120deg, rgba(17,17,17,.93) 0%, rgba(17,17,17,.84) 45%, rgba(18,18,18,.76) 100%),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      box-shadow:var(--glow);
      border:1px solid rgba(255,255,255,.08);
    }
    .hero-shell:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(1000px 420px at 20% 20%, rgba(255,173,71,.18), transparent 48%),
        radial-gradient(900px 380px at 75% 15%, rgba(255,255,255,.08), transparent 50%),
        linear-gradient(180deg, rgba(255,255,255,.04), rgba(0,0,0,.10));
      pointer-events:none;
    }
    .hero-inner{
      position:relative;
      display:grid;
      grid-template-columns:1.08fr .92fr;
      gap:34px;
      align-items:center;
      padding:54px;
      min-height:560px;
      z-index:1;
    }
    .hero-copy{
      color:#fff;
      max-width:640px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:8px 14px;
      margin-bottom:20px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.12);
      color:rgba(255,255,255,.88);
      font-size:.92rem;
      letter-spacing:.2px;
    }
    .eyebrow .dot{
      width:8px;height:8px;border-radius:50%;
      background:linear-gradient(180deg,var(--brand-2),var(--brand));
      box-shadow:0 0 0 6px rgba(217,131,31,.16);
    }
    h1{
      margin:0;
      font-size:clamp(2rem, 4vw, 3.6rem);
      line-height:1.12;
      letter-spacing:-.02em;
      font-weight:800;
      text-wrap:balance;
    }
    .hero-copy p{
      margin:18px 0 0;
      max-width:58ch;
      color:rgba(255,255,255,.86);
      font-size:1.05rem;
      line-height:1.9;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:28px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:48px;
      padding:0 18px;
      border-radius:999px;
      font-weight:800;
      border:1px solid transparent;
      transition:transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
      cursor:pointer;
      user-select:none;
    }
    .btn-primary{
      background:linear-gradient(135deg, var(--brand), var(--brand-2));
      color:#1d1208;
      box-shadow:0 14px 32px rgba(217,131,31,.22);
    }
    .btn-primary:hover,
    .btn-primary:focus-visible{
      transform:translateY(-2px);
      outline:none;
      box-shadow:0 18px 38px rgba(217,131,31,.28);
    }
    .btn-secondary{
      background:rgba(255,255,255,.08);
      color:#fff;
      border-color:rgba(255,255,255,.16);
    }
    .btn-secondary:hover,
    .btn-secondary:focus-visible{
      transform:translateY(-2px);
      background:rgba(255,255,255,.14);
      outline:none;
      border-color:rgba(255,255,255,.24);
    }
    .btn:active{transform:translateY(0)}
    .hero-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:26px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.09);
      color:rgba(255,255,255,.90);
      border:1px solid rgba(255,255,255,.10);
      font-size:.88rem;
      font-weight:600;
    }
    .tag i{
      width:7px;height:7px;border-radius:50%;
      background:var(--brand-2);
      box-shadow:0 0 0 4px rgba(255,173,71,.12);
      display:inline-block;
    }

    .hero-stage{
      position:relative;
      min-height:420px;
      display:grid;
      place-items:center;
    }
    .stage-card{
      width:min(100%, 420px);
      border-radius:28px;
      overflow:hidden;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.12);
      box-shadow:0 30px 80px rgba(0,0,0,.26);
      position:relative;
      isolation:isolate;
    }
    .stage-card img{
      width:100%;
      aspect-ratio:3/4;
      object-fit:cover;
      filter:saturate(.96) contrast(1.02);
      transform:scale(1.01);
    }
    .stage-card .overlay{
      position:absolute;
      inset:auto 0 0;
      padding:20px;
      background:linear-gradient(180deg, rgba(0,0,0,0), rgba(0,0,0,.82));
      color:#fff;
    }
    .stage-card .overlay strong{
      display:block;
      font-size:1.18rem;
      line-height:1.35;
      margin-bottom:6px;
    }
    .stage-card .overlay span{
      color:rgba(255,255,255,.80);
      font-size:.92rem;
    }
    .floating-stack{
      position:absolute;
      inset:0;
      pointer-events:none;
    }
    .float-chip{
      position:absolute;
      display:flex;
      align-items:center;
      gap:10px;
      padding:12px 14px;
      border-radius:18px;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.14);
      color:#fff;
      box-shadow:0 16px 34px rgba(0,0,0,.16);
      backdrop-filter:blur(12px);
    }
    .float-chip small{
      display:block;
      color:rgba(255,255,255,.72);
      font-size:.76rem;
      line-height:1.2;
    }
    .float-chip strong{
      display:block;
      font-size:.92rem;
      line-height:1.2;
    }
    .float-chip.one{left:-10px; top:34px}
    .float-chip.two{right:-8px; top:88px}
    .float-chip.three{left:18px; bottom:28px}
    .pulse{
      width:10px;height:10px;border-radius:50%;
      background:linear-gradient(180deg, var(--brand-2), var(--brand));
      box-shadow:0 0 0 8px rgba(255,173,71,.12);
    }

    .section{
      padding:clamp(54px, 7vw, 92px) 0 0;
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:18px;
      margin-bottom:26px;
    }
    .section-head h2{
      margin:0;
      font-size:clamp(1.6rem, 2.6vw, 2.4rem);
      line-height:1.2;
      letter-spacing:-.02em;
      font-weight:800;
      color:var(--ink);
    }
    .section-head p{
      margin:0;
      max-width:52ch;
      color:var(--muted);
      line-height:1.8;
      font-size:1rem;
    }

    .feature-grid{
      display:grid;
      grid-template-columns:repeat(12,1fr);
      gap:18px;
      align-items:stretch;
    }
    .feature-card{
      position:relative;
      overflow:hidden;
      border-radius:24px;
      background:var(--surface-strong);
      border:1px solid rgba(20,20,20,.08);
      box-shadow:var(--shadow-soft);
      min-height:210px;
      transition:transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
    }
    .feature-card:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow);
      border-color:rgba(217,131,31,.18);
    }
    .feature-card:focus-within{box-shadow:0 0 0 4px rgba(217,131,31,.12), var(--shadow)}
    .feature-card .content{
      position:relative;
      z-index:1;
      padding:24px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      height:100%;
      gap:18px;
    }
    .feature-card .kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      width:fit-content;
      padding:7px 12px;
      border-radius:999px;
      background:var(--warm);
      color:#7d4a05;
      font-size:.84rem;
      font-weight:700;
    }
    .feature-card h3{
      margin:0;
      font-size:1.28rem;
      line-height:1.3;
      color:var(--ink);
      letter-spacing:-.01em;
    }
    .feature-card p{
      margin:8px 0 0;
      color:var(--muted);
      line-height:1.8;
    }
    .feature-card .link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--brand);
      font-weight:800;
      width:fit-content;
      transition:gap .2s var(--ease), color .2s var(--ease);
    }
    .feature-card:hover .link{gap:11px;color:#c96f10}
    .feature-card .bg{
      position:absolute;
      inset:0;
      opacity:.16;
      background-position:center;
      background-size:cover;
      transform:scale(1.01);
    }
    .feature-card.one{grid-column:span 5; min-height:290px;}
    .feature-card.two{grid-column:span 4;}
    .feature-card.three{grid-column:span 3;}
    .feature-card.four{grid-column:span 4;}

    .feature-card.dark{
      background:linear-gradient(135deg, #161616, #0f0f0f);
      border-color:rgba(255,255,255,.08);
      color:#fff;
    }
    .feature-card.dark h3,
    .feature-card.dark p{color:#fff}
    .feature-card.dark .link{color:#ffcb85}
    .feature-card.dark .kicker{background:rgba(255,255,255,.09);color:#fff}

    .mini-stats{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
      margin-top:18px;
    }
    .stat{
      background:rgba(255,255,255,.76);
      border:1px solid rgba(20,20,20,.08);
      border-radius:20px;
      padding:18px 18px 16px;
      box-shadow:0 10px 25px rgba(20,20,20,.05);
    }
    .stat strong{
      display:block;
      font-size:1.3rem;
      line-height:1;
      margin-bottom:8px;
      color:var(--deep);
      font-weight:800;
    }
    .stat span{
      color:var(--muted);
      font-size:.95rem;
      line-height:1.6;
    }

    .section-slab{
      padding:24px;
      border-radius:28px;
      background:
        linear-gradient(180deg, rgba(255,255,255,.84), rgba(255,255,255,.74)),
        linear-gradient(135deg, rgba(217,131,31,.08), rgba(255,255,255,0));
      border:1px solid rgba(20,20,20,.08);
      box-shadow:var(--shadow-soft);
    }
    .split-layout{
      display:grid;
      grid-template-columns:minmax(0, 1.05fr) minmax(340px, .95fr);
      gap:18px;
    }
    .editorial{
      border-radius:24px;
      overflow:hidden;
      background:linear-gradient(145deg, #151515, #1c1c1c);
      color:#fff;
      position:relative;
      min-height:390px;
      padding:28px;
      display:flex;
      flex-direction:column;
      justify-content:flex-end;
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.08);
    }
    .editorial:before{
      content:"";
      position:absolute;
      inset:0;
      background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      opacity:.36;
      transform:scale(1.02);
      filter:saturate(.95) contrast(1.03);
    }
    .editorial:after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, rgba(10,10,10,.12), rgba(10,10,10,.88));
    }
    .editorial > *{position:relative;z-index:1}
    .editorial .kicker{
      display:inline-flex;
      width:fit-content;
      margin-bottom:14px;
      padding:7px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.10);
      border:1px solid rgba(255,255,255,.14);
      color:#fff;
      font-size:.86rem;
      font-weight:700;
    }
    .editorial h3{
      margin:0 0 10px;
      font-size:1.6rem;
      line-height:1.25;
      color:#fff;
    }
    .editorial p{
      margin:0;
      max-width:52ch;
      color:rgba(255,255,255,.84);
      line-height:1.85;
    }
    .editorial .chips{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:20px;
    }
    .chip{
      padding:7px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.10);
      border:1px solid rgba(255,255,255,.12);
      color:rgba(255,255,255,.90);
      font-size:.86rem;
      font-weight:600;
    }

    .list-panel{
      border-radius:24px;
      background:var(--surface-strong);
      border:1px solid rgba(20,20,20,.08);
      overflow:hidden;
      box-shadow:var(--shadow-soft);
    }
    .list-panel-head{
      padding:22px 22px 18px;
      border-bottom:1px solid var(--line);
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:12px;
    }
    .list-panel-head strong{
      font-size:1.05rem;
      color:var(--deep);
      font-weight:800;
    }
    .list-panel-head span{
      color:var(--muted);
      font-size:.92rem;
    }
    .updates{
      display:flex;
      flex-direction:column;
    }
    .update-item{
      display:grid;
      grid-template-columns: 1fr;
      gap:12px;
      padding:18px 22px;
      border-bottom:1px solid rgba(20,20,20,.08);
      transition:background .2s var(--ease), transform .2s var(--ease);
    }
    .update-item:hover{
      background:rgba(217,131,31,.04);
    }
    .update-item:last-child{border-bottom:0}
    .update-top{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:10px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:6px 10px;
      border-radius:999px;
      background:rgba(217,131,31,.10);
      color:#9a5403;
      font-size:.82rem;
      font-weight:700;
      border:1px solid rgba(217,131,31,.15);
      white-space:nowrap;
    }
    .badge.time{
      background:#f3f0eb;
      color:var(--muted);
      border-color:rgba(20,20,20,.08);
      font-weight:600;
    }
    .update-item h3{
      margin:0;
      font-size:1.12rem;
      line-height:1.45;
      color:var(--ink);
    }
    .update-item p{
      margin:0;
      color:var(--muted);
      line-height:1.85;
      font-size:.98rem;
    }
    .update-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      width:fit-content;
      color:var(--brand);
      font-weight:800;
      transition:gap .2s var(--ease), color .2s var(--ease);
      margin-top:2px;
    }
    .update-link:hover{gap:11px;color:#c96f10}
    .empty-updates{
      padding:36px 22px;
      color:var(--muted);
      text-align:center;
      line-height:1.8;
    }

    .guide-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:18px;
    }
    .guide-step{
      background:var(--surface-strong);
      border:1px solid rgba(20,20,20,.08);
      border-radius:24px;
      padding:22px;
      box-shadow:var(--shadow-soft);
      position:relative;
      overflow:hidden;
      transition:transform .22s var(--ease), border-color .22s var(--ease), box-shadow .22s var(--ease);
    }
    .guide-step:hover{
      transform:translateY(-3px);
      border-color:rgba(217,131,31,.16);
      box-shadow:var(--shadow);
    }
    .guide-step .num{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:42px;
      height:42px;
      border-radius:14px;
      background:linear-gradient(135deg, #1a1a1a, #343434);
      color:#fff;
      font-weight:800;
      box-shadow:0 12px 20px rgba(0,0,0,.12);
      margin-bottom:14px;
    }
    .guide-step h3{
      margin:0 0 8px;
      font-size:1.1rem;
      line-height:1.4;
      color:var(--ink);
    }
    .guide-step p{
      margin:0;
      color:var(--muted);
      line-height:1.8;
      font-size:.98rem;
    }

    .proof-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr;
      gap:18px;
      align-items:stretch;
    }
    .proof-banner{
      border-radius:28px;
      overflow:hidden;
      min-height:330px;
      position:relative;
      background:
        linear-gradient(145deg, rgba(17,17,17,.88), rgba(17,17,17,.78)),
        url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
      color:#fff;
      box-shadow:var(--shadow);
      border:1px solid rgba(255,255,255,.08);
      padding:28px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .proof-banner h3{
      margin:0;
      font-size:1.55rem;
      line-height:1.3;
      letter-spacing:-.01em;
    }
    .proof-banner p{
      margin:12px 0 0;
      max-width:48ch;
      color:rgba(255,255,255,.86);
      line-height:1.85;
    }
    .proof-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:20px;
    }
    .proof-card-list{
      display:grid;
      gap:18px;
    }
    .proof-card{
      background:var(--surface-strong);
      border:1px solid rgba(20,20,20,.08);
      border-radius:24px;
      padding:22px;
      box-shadow:var(--shadow-soft);
    }
    .proof-card strong{
      display:block;
      font-size:1.28rem;
      color:var(--deep);
      font-weight:800;
      margin-bottom:8px;
    }
    .proof-card span{
      display:block;
      color:var(--muted);
      line-height:1.8;
      margin-bottom:12px;
    }
    .proof-card .bar{
      height:8px;
      border-radius:999px;
      background:#efede8;
      overflow:hidden;
    }
    .proof-card .bar i{
      display:block;
      height:100%;
      border-radius:999px;
      background:linear-gradient(90deg, var(--brand), var(--brand-2));
    }

    .faq-grid{
      display:grid;
      grid-template-columns:repeat(2, minmax(0, 1fr));
      gap:18px;
    }
    details.faq{
      background:var(--surface-strong);
      border:1px solid rgba(20,20,20,.08);
      border-radius:20px;
      box-shadow:var(--shadow-soft);
      overflow:hidden;
      transition:transform .2s var(--ease), border-color .2s var(--ease);
    }
    details.faq[open]{
      border-color:rgba(217,131,31,.18);
      box-shadow:0 18px 34px rgba(20,20,20,.08);
    }
    details.faq summary{
      list-style:none;
      cursor:pointer;
      padding:20px 20px;
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:14px;
      font-weight:800;
      color:var(--ink);
      outline:none;
      line-height:1.4;
    }
    details.faq summary::-webkit-details-marker{display:none}
    details.faq summary .plus{
      width:34px;height:34px;
      border-radius:50%;
      background:#f4efe8;
      position:relative;
      flex:none;
      border:1px solid rgba(20,20,20,.06);
      transition:background .2s var(--ease), transform .2s var(--ease);
    }
    details.faq summary .plus:before,
    details.faq summary .plus:after{
      content:"";
      position:absolute;
      left:50%;
      top:50%;
      width:12px;height:2px;
      margin-left:-6px;
      margin-top:-1px;
      background:var(--deep);
      border-radius:999px;
      transition:transform .2s var(--ease), opacity .2s var(--ease);
    }
    details.faq summary .plus:after{
      transform:rotate(90deg);
    }
    details.faq[open] summary .plus{
      background:rgba(217,131,31,.12);
    }
    details.faq[open] summary .plus:after{opacity:0}
    details.faq .answer{
      padding:0 20px 20px;
      color:var(--muted);
      line-height:1.9;
      border-top:1px solid rgba(20,20,20,.06);
    }
    details.faq .answer p{margin:16px 0 0}

    .cta{
      padding:30px;
      border-radius:28px;
      background:
        linear-gradient(135deg, rgba(18,18,18,.96), rgba(22,22,22,.92)),
        url('/assets/images/coverpic/cover-1.webp') right center/cover no-repeat;
      color:#fff;
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--glow);
      overflow:hidden;
      position:relative;
    }
    .cta:before{
      content:"";
      position:absolute;
      inset:0;
      background:radial-gradient(700px 220px at 90% 50%, rgba(255,173,71,.18), transparent 56%);
      pointer-events:none;
    }
    .cta-inner{
      position:relative;
      z-index:1;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
    }
    .cta h2{
      margin:0 0 10px;
      font-size:clamp(1.5rem, 2.5vw, 2.1rem);
      line-height:1.22;
      color:#fff;
    }
    .cta p{
      margin:0;
      max-width:60ch;
      color:rgba(255,255,255,.82);
      line-height:1.85;
    }
    .cta-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      justify-content:flex-end;
      flex:none;
    }
    .btn-light{
      background:#fff;
      color:#1a1208;
      border-color:#fff;
    }
    .btn-light:hover,
    .btn-light:focus-visible{
      transform:translateY(-2px);
      outline:none;
      box-shadow:0 12px 26px rgba(0,0,0,.22);
    }
    .btn-ghost{
      background:transparent;
      color:#fff;
      border-color:rgba(255,255,255,.18);
    }
    .btn-ghost:hover,
    .btn-ghost:focus-visible{
      background:rgba(255,255,255,.08);
      outline:none;
      transform:translateY(-2px);
    }

    .feedback-grid{
      display:grid;
      grid-template-columns: .95fr 1.05fr;
      gap:18px;
      align-items:start;
    }
    .feedback-note{
      background:var(--surface-strong);
      border:1px solid rgba(20,20,20,.08);
      border-radius:24px;
      padding:24px;
      box-shadow:var(--shadow-soft);
    }
    .feedback-note h3{
      margin:0 0 10px;
      font-size:1.32rem;
      line-height:1.35;
      color:var(--ink);
    }
    .feedback-note p{
      margin:0 0 14px;
      color:var(--muted);
      line-height:1.86;
    }
    .feedback-list{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      gap:10px;
    }
    .feedback-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:var(--ink-2);
      line-height:1.8;
    }
    .feedback-list li:before{
      content:"";
      width:10px;height:10px;
      margin-top:9px;
      border-radius:50%;
      background:linear-gradient(180deg, var(--brand-2), var(--brand));
      box-shadow:0 0 0 5px rgba(217,131,31,.10);
      flex:none;
    }

    .form-card{
      background:var(--surface-strong);
      border:1px solid rgba(20,20,20,.08);
      border-radius:24px;
      padding:24px;
      box-shadow:var(--shadow-soft);
    }
    .form-grid{
      display:grid;
      grid-template-columns:repeat(2, minmax(0, 1fr));
      gap:14px;
    }
    .field{display:flex;flex-direction:column;gap:8px}
    .field.full{grid-column:1/-1}
    label{
      font-size:.92rem;
      font-weight:700;
      color:var(--ink-2);
    }
    input,textarea{
      width:100%;
      border:1px solid rgba(20,20,20,.12);
      background:#fff;
      border-radius:16px;
      padding:14px 16px;
      color:var(--ink);
      transition:border-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
      outline:none;
    }
    textarea{min-height:140px;resize:vertical}
    input::placeholder,textarea::placeholder{color:#9a948c}
    input:focus,textarea:focus{
      border-color:rgba(217,131,31,.56);
      box-shadow:0 0 0 4px rgba(217,131,31,.14);
    }
    .form-actions{
      margin-top:16px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      flex-wrap:wrap;
    }
    .helper{
      color:var(--muted);
      font-size:.92rem;
      line-height:1.7;
    }

    .site-footer{
      margin-top:clamp(56px, 8vw, 96px);
      background:linear-gradient(180deg, #151515 0%, #101010 100%);
      color:rgba(255,255,255,.84);
      padding:50px 0 36px;
      border-top:1px solid rgba(255,255,255,.06);
    }
    .footer-inner{
      display:grid;
      grid-template-columns:1.1fr .9fr .9fr;
      gap:24px;
      align-items:start;
    }
    .footer-brand .brand-text strong{color:#fff}
    .footer-brand .brand-text span{color:rgba(255,255,255,.62)}
    .footer-brand p{
      margin:18px 0 0;
      color:rgba(255,255,255,.72);
      line-height:1.9;
      max-width:55ch;
    }
    .footer-col h3{
      margin:0 0 14px;
      font-size:1rem;
      color:#fff;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:rgba(255,255,255,.75);
      width:fit-content;
      transition:color .2s var(--ease), transform .2s var(--ease);
    }
    .footer-links a:hover,
    .footer-links a:focus-visible{
      color:#ffd29b;
      transform:translateX(2px);
      outline:none;
    }
    .footer-note{
      margin-top:28px;
      padding-top:18px;
      border-top:1px solid rgba(255,255,255,.08);
      display:flex;
      flex-wrap:wrap;
      justify-content:space-between;
      gap:12px;
      color:rgba(255,255,255,.58);
      font-size:.92rem;
    }

    .section-anchor{
      scroll-margin-top:100px;
    }

    .cover-tile{
      position:relative;
      overflow:hidden;
      border-radius:24px;
      min-height:170px;
      background:#1b1b1b;
      border:1px solid rgba(20,20,20,.08);
      box-shadow:var(--shadow-soft);
      transition:transform .22s var(--ease), box-shadow .22s var(--ease);
    }
    .cover-tile:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow);
    }
    .cover-tile img{
      width:100%;
      height:100%;
      object-fit:cover;
      aspect-ratio:16/9;
      filter:saturate(.98) contrast(1.02);
    }
    .cover-tile .mask{
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, rgba(0,0,0,.02) 0%, rgba(0,0,0,.52) 100%);
    }
    .cover-tile .text{
      position:absolute;
      left:18px;
      right:18px;
      bottom:16px;
      color:#fff;
    }
    .cover-tile .text strong{
      display:block;
      font-size:1.05rem;
      line-height:1.35;
      margin-bottom:4px;
    }
    .cover-tile .text span{
      color:rgba(255,255,255,.8);
      font-size:.88rem;
    }

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

    .list-bullets{
      display:grid;
      gap:12px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .list-bullets li{
      position:relative;
      padding-left:18px;
      color:var(--ink-2);
      line-height:1.8;
    }
    .list-bullets li:before{
      content:"";
      position:absolute;
      left:0;
      top:.72em;
      width:8px;height:8px;border-radius:50%;
      background:linear-gradient(180deg, var(--brand-2), var(--brand));
    }

    .soft-divider{
      height:1px;
      width:100%;
      background:linear-gradient(90deg, transparent, rgba(20,20,20,.14), transparent);
      margin:18px 0;
    }

    .icon{
      width:18px;height:18px;
      display:inline-block;
      vertical-align:-3px;
      flex:none;
    }

    @media (max-width: 1120px){
      .hero-inner{grid-template-columns:1fr; padding:42px}
      .hero-stage{min-height:auto; padding-bottom:4px}
      .stage-card{width:min(100%, 460px)}
      .feature-card.one{grid-column:span 12}
      .feature-card.two,.feature-card.three,.feature-card.four{grid-column:span 6}
      .split-layout,
      .proof-grid,
      .feedback-grid,
      .footer-inner{grid-template-columns:1fr}
      .guide-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width: 768px){
      .header-inner{min-height:72px}
      .nav-toggle{display:inline-flex}
      .mobile-panel{
        position:fixed;
        inset:72px 14px auto;
        padding:16px;
        background:rgba(255,255,255,.96);
        border:1px solid rgba(20,20,20,.08);
        border-radius:22px;
        box-shadow:0 18px 40px rgba(0,0,0,.12);
        flex-direction:column;
        align-items:stretch;
        gap:14px;
        opacity:0;
        transform:translateY(-10px);
        pointer-events:none;
        transition:opacity .22s var(--ease), transform .22s var(--ease);
      }
      body.menu-open .mobile-panel{
        opacity:1;
        transform:translateY(0);
        pointer-events:auto;
      }
      .nav{
        flex-direction:column;
        align-items:stretch;
        gap:4px;
      }
      .nav a{
        justify-content:flex-start;
        width:100%;
        border-radius:16px;
        padding:12px 14px;
        background:#f8f7f4;
      }
      .nav a:before{display:none}
      .header-cta{width:100%}
         .hero-shell{border-radius:24px}
      .hero-inner{padding:32px 22px; gap:26px; min-height:auto}
      .hero-copy p{font-size:1rem}
      .hero-actions .btn{width:100%}
      .hero-tags{gap:8px}
      .float-chip{display:none}
      .section-head{display:block}
      .section-head p{margin-top:10px}
      .mini-stats{grid-template-columns:repeat(2,1fr)}
      .feature-grid{display:flex; overflow-x:auto; padding-bottom:8px; scroll-snap-type:x mandatory}
      .feature-card{min-width:82%; scroll-snap-align:start}
      .feature-card.one,.feature-card.two,.feature-card.three,.feature-card.four{grid-column:auto}
      .section-slab{padding:16px; border-radius:24px}
      .guide-grid,.faq-grid,.row-tiles{grid-template-columns:1fr}
      .cta-inner{display:block}
      .cta-actions{justify-content:flex-start; margin-top:20px}
      .form-grid{grid-template-columns:1fr}
      .brand-text span{display:none}
    }
    @media (max-width: 520px){
      .container{width:min(100% - 28px, var(--container))}
      .brand-mark{width:40px;height:40px;border-radius:14px}
      .brand-text strong{font-size:.98rem}
      .hero{padding-top:16px}
      .hero-shell{border-radius:20px}
      .hero-inner{padding:26px 18px}
      .eyebrow{font-size:.84rem}
      .stage-card{border-radius:22px}
      .mini-stats{grid-template-columns:1fr}
      .stat{padding:16px}
      .feature-card{min-width:88%; min-height:230px}
      .editorial{padding:22px; min-height:340px}
      .list-panel-head{display:block}
      .list-panel-head span{display:block;margin-top:6px}
      .update-item{padding:18px}
      .guide-step,.proof-card,.feedback-note,.form-card{padding:20px}
      .cta{padding:22px; border-radius:24px}
      .cta-actions .btn{width:100%}
      .footer-note{display:block}
      .footer-note span{display:block;margin-top:8px}
    }

/* roulang page: article */
:root{
      --bg: #f4f4f2;
      --bg-soft: #fbfaf8;
      --surface: rgba(255,255,255,.82);
      --surface-strong: #ffffff;
      --ink: #141414;
      --ink-2: #303030;
      --muted: #6f6a63;
      --line: rgba(20,20,20,.10);
      --line-strong: rgba(20,20,20,.16);
      --brand: #d9831f;
      --brand-2: #ffad47;
      --brand-ink: #1a1208;
      --warm: #fff4e6;
      --deep: #111111;
      --deep-2: #191919;
      --glow: 0 24px 70px rgba(12, 12, 12, .14);
      --shadow: 0 18px 40px rgba(25, 21, 16, .10);
      --shadow-soft: 0 12px 25px rgba(25, 21, 16, .08);
      --radius-sm: 10px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --radius-xl: 30px;
      --container: 1220px;
      --gutter: 24px;
      --space-1: 6px;
      --space-2: 10px;
      --space-3: 14px;
      --space-4: 18px;
      --space-5: 24px;
      --space-6: 32px;
      --space-7: 44px;
      --space-8: 60px;
      --space-9: 84px;
      --ease: cubic-bezier(.2,.8,.2,1);
    }

    *{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(--ink);
      background:
        radial-gradient(1200px 500px at 10% -10%, rgba(217,131,31,.08), transparent 60%),
        radial-gradient(1000px 400px at 90% 0%, rgba(255,173,71,.10), transparent 55%),
        linear-gradient(180deg, #faf9f6 0%, #f5f4f1 42%, #f2f1ee 100%);
      line-height:1.8;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
      min-width:320px;
    }
    img{max-width:100%;display:block}
    a{color:inherit;text-decoration:none}
    button,input,textarea,select{font:inherit}
    a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
      outline:none;
      box-shadow:0 0 0 4px rgba(217,131,31,.22);
    }
    ::selection{background:rgba(217,131,31,.22);color:var(--deep)}
    .container{
      width:min(var(--container), calc(100% - 2*var(--gutter)));
      margin:0 auto;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:200;
      backdrop-filter:saturate(160%) blur(14px);
      background:rgba(247,246,243,.82);
      border-bottom:1px solid rgba(20,20,20,.08);
      transition:box-shadow .25s var(--ease), transform .25s var(--ease), background .25s var(--ease);
    }
    .site-header.is-scrolled{
      box-shadow:0 10px 30px rgba(20,20,20,.08);
      background:rgba(248,247,244,.92);
    }
    .header-inner{
      min-height:80px;
      display:flex;
      align-items:center;
      gap:18px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      flex:0 0 auto;
    }
    .brand-mark{
      width:42px;height:42px;
      border-radius:14px;
      background:
        radial-gradient(circle at 30% 30%, rgba(255,255,255,.88), rgba(255,255,255,0) 32%),
        linear-gradient(145deg, #232323, #0e0e0e);
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.08), 0 10px 24px rgba(0,0,0,.18);
      position:relative;
      overflow:hidden;
      flex:none;
    }
    .brand-mark:before{
      content:"";
      position:absolute;
      inset:10px 11px 10px 12px;
      background:linear-gradient(145deg, var(--brand), #ffbd63);
      clip-path:polygon(18% 8%, 100% 50%, 18% 92%, 18% 8%);
      filter:drop-shadow(0 2px 4px rgba(0,0,0,.18));
    }
    .site-footer .brand-mark:before{display:none}
    .brand-mark:after{
      content:"";
      position:absolute;
      inset:0;
      border-radius:14px;
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.05);
    }
    .brand-mark svg{
      width:100%;
      height:100%;
      padding:8px;
      position:relative;
      z-index:1;
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.15;
      min-width:0;
    }
    .brand-text strong{
      font-size:1.02rem;
      font-weight:800;
      letter-spacing:.2px;
      white-space:nowrap;
    }
    .brand-text span{
      font-size:.78rem;
      color:var(--muted);
      white-space:nowrap;
    }
    .nav-wrap{
      flex:1 1 auto;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      min-width:0;
    }
    .nav-toggle{
      display:none;
      width:44px;
      height:44px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.7);
      border-radius:14px;
      align-items:center;
      justify-content:center;
      cursor:pointer;
      transition:transform .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
      flex:none;
    }
    .nav-toggle:hover{transform:translateY(-1px);border-color:rgba(217,131,31,.35)}
    .nav-toggle span{position:relative;width:18px;height:14px;display:block}
    .nav-toggle span:before,
    .nav-toggle span:after,
    .nav-toggle span i{
      content:"";
      position:absolute;
      left:0;
      width:100%;
      height:2px;
      border-radius:999px;
      background:var(--deep);
      transition:transform .25s var(--ease), top .25s var(--ease), opacity .25s var(--ease);
    }
    .nav-toggle span:before{top:0}
    .nav-toggle span i{top:6px}
    .nav-toggle span:after{top:12px}
    body.menu-open .nav-toggle span:before{top:6px;transform:rotate(45deg)}
    body.menu-open .nav-toggle span i{opacity:0}
    body.menu-open .nav-toggle span:after{top:6px;transform:rotate(-45deg)}
    .nav{
      display:flex;
      align-items:center;
      gap:6px;
      flex-wrap:wrap;
    }
    .nav a{
      position:relative;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding:12px 14px;
      color:var(--ink-2);
      border-radius:999px;
      transition:background .2s var(--ease), color .2s var(--ease), transform .2s var(--ease);
      font-weight:600;
      letter-spacing:.1px;
      white-space:nowrap;
    }
    .nav a:before{
      content:"";
      position:absolute;
      inset:auto 16px 8px;
      height:2px;
      border-radius:999px;
      background:linear-gradient(90deg, var(--brand), var(--brand-2));
      transform:scaleX(0);
      transform-origin:left;
      transition:transform .22s var(--ease);
    }
    .nav a:hover,
    .nav a:focus-visible{
      background:rgba(217,131,31,.08);
      color:var(--deep);
      transform:translateY(-1px);
      outline:none;
    }
    .nav a:hover:before,
    .nav a.active:before{transform:scaleX(1)}
    .nav a.active{
      background:rgba(217,131,31,.10);
      color:var(--deep);
    }
    .nav a:active,.btn:active{transform:translateY(1px)}
    .header-cta{display:flex;align-items:center;gap:10px;flex:none}

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:46px;
      padding:12px 18px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:800;
      letter-spacing:.1px;
      cursor:pointer;
      transition:transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
      text-decoration:none;
    }
    .btn-primary{
      background:linear-gradient(135deg, var(--brand), var(--brand-2));
      color:var(--brand-ink);
      box-shadow:0 14px 28px rgba(217,131,31,.22);
    }
    .btn-primary:hover{
      color:var(--brand-ink);
      transform:translateY(-2px);
      box-shadow:0 18px 36px rgba(217,131,31,.30);
      filter:saturate(1.05);
    }
    .btn-secondary{
      background:rgba(255,255,255,.76);
      color:var(--deep);
      border-color:var(--line-strong);
      box-shadow:0 8px 18px rgba(20,20,20,.05);
    }
    .btn-secondary:hover{
      background:var(--warm);
      border-color:rgba(217,131,31,.28);
      transform:translateY(-2px);
      color:var(--deep);
    }
    .btn-dark{
      background:var(--deep);
      color:#fff;
      border-color:rgba(255,255,255,.08);
    }
    .btn-dark:hover{
      color:#fff;
      background:#000;
      transform:translateY(-2px);
      box-shadow:0 16px 30px rgba(0,0,0,.18);
    }

    .article-hero{
      position:relative;
      padding:54px 0 44px;
      overflow:hidden;
      background:
        linear-gradient(120deg, rgba(17,17,17,.92), rgba(17,17,17,.72)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      color:#fff;
    }
    .article-hero:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(600px 260px at 18% 0%, rgba(255,173,71,.28), transparent 70%),
        repeating-linear-gradient(90deg, rgba(255,255,255,.04) 0 1px, transparent 1px 76px);
      pointer-events:none;
    }
    .article-hero .container{position:relative;z-index:1}
    .breadcrumbs{
      display:flex;
      align-items:center;
      gap:8px;
      flex-wrap:wrap;
      color:rgba(255,255,255,.72);
      font-size:.93rem;
      margin-bottom:24px;
    }
    .breadcrumbs a{
      color:#fff;
      border-bottom:1px solid rgba(255,173,71,.42);
      transition:color .2s var(--ease), border-color .2s var(--ease);
    }
    .breadcrumbs a:hover{color:var(--brand-2);border-color:var(--brand-2)}
    .crumb-sep{opacity:.55}
    .article-head{
      max-width:920px;
      display:grid;
      gap:18px;
    }
    .article-kicker{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
    }
    .badge,.tag{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 11px;
      border-radius:999px;
      border:1px solid rgba(217,131,31,.28);
      background:rgba(255,244,230,.88);
      color:#7b430b;
      font-size:.84rem;
      font-weight:800;
      line-height:1.2;
    }
    .article-hero .badge{
      background:rgba(255,173,71,.16);
      color:#ffe0b4;
      border-color:rgba(255,173,71,.34);
    }
    .article-head h1{
      margin:0;
      font-size:clamp(2rem, 4.6vw, 3.45rem);
      line-height:1.16;
      letter-spacing:-.8px;
      font-weight:850;
      max-width:880px;
    }
    .article-desc{
      margin:0;
      max-width:820px;
      color:rgba(255,255,255,.78);
      font-size:1.08rem;
      line-height:1.9;
    }
    .article-meta{
      display:flex;
      align-items:center;
      gap:12px;
      flex-wrap:wrap;
      color:rgba(255,255,255,.76);
      font-size:.94rem;
    }
    .meta-dot{
      width:5px;
      height:5px;
      border-radius:50%;
      background:rgba(255,173,71,.8);
      display:inline-flex;
    }

    .main-wrap{
      padding:var(--space-8) 0 var(--space-9);
    }
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0, 820px) 330px;
      gap:34px;
      align-items:start;
    }
    .reading-card{
      background:rgba(255,255,255,.88);
      border:1px solid var(--line);
      border-radius:var(--radius-xl);
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .article-cover{
      margin:0;
      position:relative;
      background:var(--deep);
      border-bottom:1px solid var(--line);
    }
    .article-cover img{
      width:100%;
      aspect-ratio:16/8.2;
      object-fit:cover;
      filter:saturate(.96) contrast(1.03);
    }
    .article-cover:after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, transparent 48%, rgba(0,0,0,.48));
      pointer-events:none;
    }
    .article-cover figcaption{
      position:absolute;
      left:22px;
      right:22px;
      bottom:16px;
      z-index:1;
      color:rgba(255,255,255,.82);
      font-size:.92rem;
    }
    .article-body{
      padding:34px clamp(22px, 4vw, 48px) 46px;
      font-size:17px;
      line-height:1.92;
      color:var(--ink-2);
    }
    .cms-content{
      max-width:100%;
    }
    .cms-content h2,
    .cms-content h3,
    .cms-content h4{
      color:var(--ink);
      line-height:1.35;
      font-weight:850;
      margin:2.1em 0 .72em;
      letter-spacing:-.2px;
    }
    .cms-content h2{
      font-size:1.82rem;
      padding-top:6px;
      position:relative;
    }
    .cms-content h2:before{
      content:"";
      display:block;
      width:38px;
      height:4px;
      border-radius:999px;
      background:linear-gradient(90deg, var(--brand), var(--brand-2));
      margin-bottom:12px;
    }
    .cms-content h3{font-size:1.34rem}
    .cms-content h4{font-size:1.12rem}
    .cms-content p{margin:0 0 1.22em}
    .cms-content a{
      color:#9a5812;
      font-weight:700;
      background:linear-gradient(90deg, rgba(217,131,31,.35), rgba(217,131,31,.35)) left bottom/100% 2px no-repeat;
      transition:color .2s var(--ease), background-size .2s var(--ease);
    }
    .cms-content a:hover{
      color:#6f3b07;
      background-size:100% 8px;
    }
    .cms-content img{
      border-radius:20px;
      box-shadow:var(--shadow-soft);
      margin:26px auto;
      border:1px solid rgba(20,20,20,.08);
    }
    .cms-content blockquote{
      margin:28px 0;
      padding:20px 22px;
      border-left:4px solid var(--brand);
      background:linear-gradient(135deg, rgba(255,244,230,.9), rgba(255,255,255,.82));
      border-radius:0 18px 18px 0;
      color:#4c4034;
    }
    .cms-content ul,.cms-content ol{
      margin:0 0 1.35em;
      padding-left:1.35em;
    }
    .cms-content li{margin:.38em 0}
    .cms-content table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      margin:28px 0;
      overflow:hidden;
      border:1px solid var(--line);
      border-radius:16px;
      background:#fff;
      box-shadow:0 8px 18px rgba(20,20,20,.04);
    }
    .cms-content th,.cms-content td{
      padding:13px 14px;
      border-bottom:1px solid var(--line);
      vertical-align:top;
    }
    .cms-content th{
      background:var(--warm);
      color:var(--brand-ink);
      font-weight:850;
    }
    .cms-content tr:last-child td{border-bottom:0}
    .cms-content hr{
      border:0;
      height:1px;
      margin:34px 0;
      background:linear-gradient(90deg, transparent, rgba(217,131,31,.38), transparent);
    }
    .empty-article{
      text-align:center;
      padding:44px 20px;
      border:1px dashed rgba(217,131,31,.34);
      border-radius:22px;
      background:rgba(255,244,230,.56);
    }
    .empty-article h2{
      margin:0 0 12px;
      font-size:1.8rem;
      color:var(--ink);
    }

    .article-sidebar{
      position:sticky;
      top:104px;
      display:grid;
      gap:18px;
    }
    .side-card{
      background:rgba(255,255,255,.82);
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-soft);
      padding:22px;
      overflow:hidden;
    }
    .side-card.dark{
      background:
        linear-gradient(145deg, rgba(17,17,17,.95), rgba(30,28,26,.94)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      color:#fff;
      border-color:rgba(255,255,255,.12);
      box-shadow:var(--glow);
    }
    .side-title{
      margin:0 0 16px;
      font-size:1.08rem;
      font-weight:850;
      letter-spacing:.1px;
    }
    .toc-list,.recommend-list{
      display:grid;
      gap:12px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .toc-list a{
      display:flex;
      gap:10px;
      align-items:flex-start;
      padding:10px 12px;
      border-radius:14px;
      color:var(--ink-2);
      background:rgba(244,244,242,.68);
      transition:transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
    }
    .toc-list a:before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--brand);
      margin-top:10px;
      flex:none;
    }
    .toc-list a:hover{
      transform:translateX(3px);
      background:var(--warm);
      color:var(--brand-ink);
    }
    .recommend-item{
      display:grid;
      gap:6px;
      padding:14px 0;
      border-bottom:1px solid var(--line);
    }
    .recommend-item:last-child{border-bottom:0;padding-bottom:0}
    .recommend-item a{
      font-weight:850;
      line-height:1.45;
      transition:color .2s var(--ease);
    }
    .recommend-item a:hover{color:var(--brand)}
    .recommend-meta{
      display:flex;
      gap:8px;
      flex-wrap:wrap;
      color:var(--muted);
      font-size:.86rem;
    }
    .mini-cover{
      display:grid;
      grid-template-columns:82px 1fr;
      gap:14px;
      align-items:center;
    }
    .mini-cover img{
      width:82px;
      height:96px;
      object-fit:cover;
      border-radius:16px;
      box-shadow:0 12px 22px rgba(0,0,0,.14);
    }
    .mini-cover p{
      margin:6px 0 0;
      color:rgba(255,255,255,.68);
      font-size:.92rem;
      line-height:1.7;
    }
    .side-card.dark .side-title{color:#fff}
    .side-card.dark .badge{
      background:rgba(255,173,71,.16);
      color:#ffe0b4;
      border-color:rgba(255,173,71,.32);
    }

    .section{
      padding:var(--space-8) 0;
    }
    .section-title{
      max-width:760px;
      margin-bottom:30px;
    }
    .section-title .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#8b500e;
      font-weight:850;
      margin-bottom:10px;
      letter-spacing:.2px;
    }
    .section-title .eyebrow:before{
      content:"";
      width:22px;
      height:3px;
      border-radius:999px;
      background:linear-gradient(90deg,var(--brand),var(--brand-2));
    }
    .section-title h2{
      margin:0 0 10px;
      font-size:clamp(1.75rem,3.2vw,2.45rem);
      font-weight:900;
      letter-spacing:-.5px;
      line-height:1.25;
    }
    .section-title p{
      margin:0;
      color:var(--muted);
      font-size:1.02rem;
      line-height:1.85;
    }

    .guide-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:18px;
    }
    .guide-card{
      position:relative;
      padding:22px;
      border-radius:var(--radius-lg);
      background:rgba(255,255,255,.78);
      border:1px solid var(--line);
      box-shadow:var(--shadow-soft);
      transition:transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
      overflow:hidden;
    }
    .guide-card:before{
      content:attr(data-step);
      position:absolute;
      right:18px;
      top:12px;
      font-size:3.4rem;
      line-height:1;
      font-weight:900;
      color:rgba(217,131,31,.10);
    }
    .guide-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow);
      border-color:rgba(217,131,31,.24);
    }
    .guide-card h3{
      margin:0 0 10px;
      font-size:1.16rem;
      font-weight:850;
      position:relative;
    }
    .guide-card p{
      margin:0;
      color:var(--muted);
      line-height:1.75;
      position:relative;
    }

    .faq-wrap{
      display:grid;
      grid-template-columns:.8fr 1.2fr;
      gap:28px;
      align-items:start;
    }
    .faq-panel{
      background:linear-gradient(145deg, #171717, #0f0f0f);
      border-radius:var(--radius-xl);
      color:#fff;
      padding:30px;
      box-shadow:var(--glow);
      position:relative;
      overflow:hidden;
    }
    .faq-panel:after{
      content:"";
      position:absolute;
      width:220px;
      height:220px;
      right:-90px;
      bottom:-90px;
      background:radial-gradient(circle, rgba(255,173,71,.28), transparent 68%);
    }
    .faq-panel h2{
      margin:0 0 12px;
      font-size:2rem;
      font-weight:900;
    }
    .faq-panel p{
      margin:0 0 22px;
      color:rgba(255,255,255,.72);
    }
    .faq-list{display:grid;gap:12px}
    .faq-item{
      border:1px solid var(--line);
      border-radius:18px;
      background:rgba(255,255,255,.78);
      overflow:hidden;
      box-shadow:0 10px 24px rgba(20,20,20,.05);
    }
    .faq-question{
      width:100%;
      border:0;
      background:transparent;
      padding:18px 20px;
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:16px;
      cursor:pointer;
      color:var(--ink);
      font-weight:850;
      text-align:left;
    }
    .faq-icon{
      width:28px;
      height:28px;
      border-radius:50%;
      background:var(--warm);
      color:#8b500e;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      flex:none;
      transition:transform .2s var(--ease), background .2s var(--ease);
    }
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height .28s var(--ease);
    }
    .faq-answer p{
      margin:0;
      padding:0 20px 18px;
      color:var(--muted);
      line-height:1.85;
    }
    .faq-item.is-open{
      border-color:rgba(217,131,31,.28);
      background:#fff;
    }
    .faq-item.is-open .faq-icon{
      transform:rotate(45deg);
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      color:var(--brand-ink);
    }

    .feedback-cta{
      position:relative;
      margin:var(--space-8) 0 0;
      border-radius:var(--radius-xl);
      overflow:hidden;
      background:
        linear-gradient(115deg, rgba(17,17,17,.94), rgba(17,17,17,.78)),
        url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
      color:#fff;
      box-shadow:var(--glow);
    }
    .feedback-cta:before{
      content:"";
      position:absolute;
      inset:0;
      background:radial-gradient(520px 240px at 14% 16%, rgba(255,173,71,.26), transparent 70%);
      pointer-events:none;
    }
    .feedback-inner{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:28px;
      align-items:center;
      padding:38px;
    }
    .feedback-inner h2{
      margin:0 0 12px;
      font-size:clamp(1.7rem,3vw,2.35rem);
      font-weight:900;
    }
    .feedback-inner p{
      margin:0;
      color:rgba(255,255,255,.74);
      max-width:660px;
    }
    .feedback-actions{
      display:flex;
      justify-content:flex-end;
      gap:12px;
      flex-wrap:wrap;
    }

    .site-footer{
      background:linear-gradient(180deg,#151515 0%,#0f0f0f 100%);
      color:#fff;
      padding:58px 0 24px;
      border-top:1px solid rgba(255,255,255,.08);
    }
    .footer-inner{
      display:grid;
      grid-template-columns:1.25fr .75fr .85fr;
      gap:34px;
      align-items:start;
      padding-bottom:30px;
    }
    .footer-brand p{
      margin:18px 0 0;
      color:rgba(255,255,255,.68);
      line-height:1.85;
      max-width:520px;
    }
    .site-footer .brand-text span{color:rgba(255,255,255,.62)}
    .site-footer .brand-text strong{color:#fff}
    .footer-col h3{
      margin:0 0 14px;
      color:#fff;
      font-size:1.04rem;
      font-weight:850;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:rgba(255,255,255,.68);
      transition:color .2s var(--ease), transform .2s var(--ease);
      width:max-content;
      max-width:100%;
    }
    .footer-links a:hover{
      color:var(--brand-2);
      transform:translateX(3px);
    }
    .footer-note{
      border-top:1px solid rgba(255,255,255,.10);
      padding-top:20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      flex-wrap:wrap;
      color:rgba(255,255,255,.56);
      font-size:.92rem;
    }

    @media (max-width: 1100px){
      .article-layout{grid-template-columns:minmax(0,1fr)}
      .article-sidebar{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}
      .side-card.dark{grid-column:1/-1}
      .guide-grid{grid-template-columns:repeat(2,1fr)}
      .faq-wrap{grid-template-columns:1fr}
    }
    @media (max-width: 900px){
      .header-inner{min-height:72px;justify-content:space-between}
      .nav-toggle{display:inline-flex;order:3}
      .nav-wrap{
        position:fixed;
        left:var(--gutter);
        right:var(--gutter);
        top:82px;
        display:grid;
        gap:12px;
        padding:16px;
        border-radius:22px;
        background:rgba(255,255,255,.96);
        border:1px solid var(--line);
        box-shadow:var(--shadow);
        opacity:0;
        visibility:hidden;
        transform:translateY(-10px);
        transition:opacity .22s var(--ease), transform .22s var(--ease), visibility .22s var(--ease);
      }
      body.menu-open .nav-wrap{
        opacity:1;
        visibility:visible;
        transform:translateY(0);
      }
      .nav{display:grid;grid-template-columns:1fr;gap:4px}
      .nav a{
        justify-content:flex-start;
        padding:13px 14px;
        border-radius:14px;
      }
      .header-cta{justify-content:stretch}
      .header-cta .btn{width:100%}
      .article-hero{padding:38px 0}
      .footer-inner{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:1/-1}
      .feedback-inner{grid-template-columns:1fr;padding:30px}
      .feedback-actions{justify-content:flex-start}
    }
    @media (max-width: 680px){
      :root{--gutter:18px}
      .brand-text span{display:none}
      .article-head h1{letter-spacing:-.4px}
      .article-meta{gap:8px}
      .article-cover img{aspect-ratio:16/10}
      .article-body{padding:26px 18px 32px;font-size:16px;line-height:1.86}
      .cms-content h2{font-size:1.48rem}
      .article-sidebar{grid-template-columns:1fr}
      .guide-grid{grid-template-columns:1fr}
      .faq-panel{padding:24px}
      .feedback-actions .btn{width:100%}
      .footer-inner{grid-template-columns:1fr}
      .footer-note{display:grid}
    }
    @media (max-width: 480px){
      .btn{width:100%;padding-left:14px;padding-right:14px}
      .article-hero{padding:30px 0}
      .breadcrumbs{font-size:.86rem}
      .article-desc{font-size:1rem}
      .mini-cover{grid-template-columns:70px 1fr}
      .mini-cover img{width:70px;height:84px}
      .feedback-inner{padding:24px}
    }

/* 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}