/* roulang page: index */
:root{
      --ink:#171A1D;
      --ink-soft:#24282b;
      --text:#3C3F40;
      --muted:#77766F;
      --line:#E2DED3;
      --line-strong:#d3cbbd;
      --lime:#A7F15A;
      --lime-soft:#edfbd8;
      --copper:#D98F45;
      --copper-soft:#fbeddc;
      --cream:#F7F3EA;
      --cream-2:#EFEAE0;
      --card:#FFFFFF;
      --card-warm:#FFFDF8;
      --danger:#c45b4f;
      --success:#5f9e31;
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --radius-sm:12px;
      --shadow:0 18px 55px rgba(60,50,35,.08);
      --shadow-hover:0 24px 70px rgba(60,50,35,.14);
      --container:1200px;
      --ease:cubic-bezier(.2,.8,.2,1);
      --header-h:78px;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(167,241,90,.22), transparent 30%),
        radial-gradient(circle at 88% 18%, rgba(217,143,69,.12), transparent 28%),
        linear-gradient(180deg,var(--cream) 0%,#fbf8f0 42%,var(--cream-2) 100%);
      line-height:1.78;
      overflow-x:hidden;
      text-rendering:optimizeLegibility;
    }

    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{border:0;cursor:pointer}
    ::selection{background:var(--lime);color:var(--ink)}

    .container{
      width:min(var(--container),calc(100% - 64px));
      margin:0 auto;
    }

    .skip-link{
      position:absolute;
      left:16px;
      top:-60px;
      z-index:1000;
      padding:10px 14px;
      border-radius:999px;
      background:var(--ink);
      color:var(--lime);
      transition:top .2s var(--ease);
    }
    .skip-link:focus{top:12px;outline:3px solid var(--lime)}

    .site-header{
      position:sticky;
      top:0;
      z-index:100;
      height:var(--header-h);
      background:rgba(247,243,234,.88);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(226,222,211,.74);
      transition:box-shadow .25s var(--ease),background .25s var(--ease);
    }
    .site-header.is-scrolled{box-shadow:0 10px 28px rgba(60,50,35,.08);background:rgba(247,243,234,.96)}
    .nav-wrap{
      height:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
      font-weight:800;
      color:var(--ink);
      letter-spacing:-.02em;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:15px;
      background:var(--ink);
      position:relative;
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.08),0 10px 24px rgba(23,26,29,.16);
      overflow:hidden;
    }
    .brand-mark::before{
      content:"";
      position:absolute;
      width:20px;
      height:20px;
      left:7px;
      top:7px;
      border-radius:7px;
      border:2px solid var(--lime);
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      width:9px;
      height:9px;
      right:9px;
      bottom:9px;
      border-radius:50%;
      background:var(--copper);
      box-shadow:0 -16px 0 rgba(167,241,90,.55);
    }
    .brand-text{font-size:18px;line-height:1.15}
    .nav-links{
      display:flex;
      align-items:center;
      gap:6px;
      padding:7px;
      background:rgba(255,253,248,.64);
      border:1px solid rgba(226,222,211,.78);
      border-radius:999px;
    }
    .nav-links a{
      position:relative;
      padding:9px 15px;
      border-radius:999px;
      color:var(--ink-soft);
      font-size:14px;
      font-weight:650;
      transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
    }
    .nav-links a:hover,.nav-links a.active{
      background:var(--ink);
      color:var(--lime);
      transform:translateY(-1px);
    }
    .header-actions{display:flex;align-items:center;gap:10px}
    .menu-toggle{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      background:var(--card-warm);
      border:1px solid var(--line);
      color:var(--ink);
      align-items:center;
      justify-content:center;
    }
    .menu-toggle span,.menu-toggle span::before,.menu-toggle span::after{
      content:"";
      display:block;
      width:18px;
      height:2px;
      background:currentColor;
      border-radius:999px;
      transition:transform .2s var(--ease),opacity .2s var(--ease);
    }
    .menu-toggle span::before{transform:translateY(-6px)}
    .menu-toggle span::after{transform:translateY(4px)}
    .menu-toggle.is-open span{transform:rotate(45deg)}
    .menu-toggle.is-open span::before{opacity:0}
    .menu-toggle.is-open span::after{transform:translateY(-2px) rotate(-90deg)}
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:11px 18px;
      border-radius:999px;
      font-weight:750;
      font-size:14px;
      line-height:1;
      border:1px solid transparent;
      transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
      white-space:nowrap;
    }
    .btn-primary{
      background:var(--ink);
      color:var(--lime);
      box-shadow:0 12px 28px rgba(23,26,29,.16);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(23,26,29,.22);background:#0f1113}
    .btn-lime{
      background:var(--lime);
      color:var(--ink);
      box-shadow:0 14px 30px rgba(111,166,45,.18);
    }
    .btn-lime:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(111,166,45,.26);background:#b5ff6d}
    .btn-secondary{
      background:rgba(255,253,248,.72);
      color:var(--ink);
      border-color:var(--line-strong);
    }
    .btn-secondary:hover{transform:translateY(-2px);background:#fff;border-color:var(--copper)}
    .btn:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{
      outline:3px solid rgba(167,241,90,.75);
      outline-offset:3px;
    }

    main{display:block}
    .section{padding:86px 0}
    .section-tight{padding:64px 0}
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:flex-end;
      gap:28px;
      margin-bottom:34px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--ink);
      font-size:13px;
      font-weight:800;
      letter-spacing:.04em;
      padding:7px 12px;
      border:1px solid var(--line);
      border-radius:999px;
      background:rgba(255,253,248,.72);
      margin-bottom:16px;
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--lime);
      box-shadow:0 0 0 4px rgba(167,241,90,.18);
    }
    h1,h2,h3,p{margin-top:0}
    h1,h2,h3{color:var(--ink);letter-spacing:-.04em}
    h1{
      font-size:clamp(34px,5vw,58px);
      line-height:1.14;
      margin-bottom:20px;
      font-weight:850;
    }
    h2{
      font-size:clamp(28px,3.4vw,40px);
      line-height:1.2;
      margin-bottom:14px;
      font-weight:820;
    }
    h3{
      font-size:22px;
      line-height:1.35;
      margin-bottom:10px;
      font-weight:780;
    }
    .lead{
      font-size:18px;
      line-height:1.88;
      color:#4b4d4d;
      max-width:740px;
    }
    .section-desc{
      max-width:680px;
      color:var(--muted);
      font-size:16px;
      line-height:1.85;
      margin-bottom:0;
    }

    .hero{
      position:relative;
      padding:74px 0 38px;
      min-height:calc(100vh - var(--header-h));
      display:flex;
      align-items:center;
      overflow:hidden;
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:36px 0 auto auto;
      width:46vw;
      height:46vw;
      max-width:620px;
      max-height:620px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(167,241,90,.28),rgba(217,143,69,.08) 42%,transparent 70%);
      pointer-events:none;
      filter:blur(2px);
    }
    .hero-grid{
      position:relative;
      display:grid;
      grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);
      gap:54px;
      align-items:center;
    }
    .hero-copy{padding:24px 0}
    .hero-copy .lead{margin-bottom:28px}
    .hero-actions{
      display:flex;
      align-items:center;
      gap:14px;
      flex-wrap:wrap;
      margin-bottom:28px;
    }
    .trust-strip{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .trust-strip li{
      display:flex;
      align-items:center;
      gap:8px;
      padding:9px 12px;
      border-radius:999px;
      background:rgba(255,253,248,.78);
      border:1px solid var(--line);
      color:var(--ink-soft);
      font-size:13px;
      font-weight:650;
    }
    .trust-strip li::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--copper);
    }

    .hero-visual{
      position:relative;
      min-height:520px;
      border-radius:36px;
      padding:22px;
      background:
        linear-gradient(135deg,rgba(255,253,248,.88),rgba(239,234,224,.74)),
        url("/assets/images/backpic/back-1.webp") center/cover;
      border:1px solid rgba(226,222,211,.88);
      box-shadow:var(--shadow);
      overflow:hidden;
      isolation:isolate;
    }
    .hero-visual::before{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,rgba(247,243,234,.1),rgba(247,243,234,.58));
      z-index:-1;
    }
    .floating-card{
      position:absolute;
      background:rgba(255,253,248,.92);
      border:1px solid rgba(226,222,211,.9);
      border-radius:24px;
      box-shadow:0 20px 50px rgba(60,50,35,.12);
      backdrop-filter:blur(10px);
    }
    .resource-panel{
      left:28px;
      right:68px;
      top:46px;
      padding:22px;
    }
    .panel-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-bottom:18px;
    }
    .window-dots{display:flex;gap:6px}
    .window-dots i{
      width:9px;height:9px;border-radius:50%;
      background:var(--line-strong);
    }
    .window-dots i:nth-child(2){background:var(--copper)}
    .window-dots i:nth-child(3){background:var(--lime)}
    .mini-badge{
      display:inline-flex;
      align-items:center;
      border-radius:999px;
      padding:6px 10px;
      background:var(--lime-soft);
      color:#345118;
      font-size:12px;
      font-weight:800;
    }
    .panel-title{
      font-size:24px;
      color:var(--ink);
      font-weight:850;
      line-height:1.28;
      letter-spacing:-.03em;
      margin:0 0 12px;
    }
    .panel-lines{display:grid;gap:9px}
    .panel-lines span{
      height:10px;
      border-radius:999px;
      background:linear-gradient(90deg,rgba(23,26,29,.18),rgba(23,26,29,.04));
    }
    .panel-lines span:nth-child(2){width:76%}
    .panel-lines span:nth-child(3){width:54%}
    .update-card{
      width:245px;
      right:24px;
      bottom:40px;
      padding:18px;
      transform:rotate(2deg);
    }
    .update-card strong{display:block;color:var(--ink);font-size:18px;margin:8px 0 8px}
    .update-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.6}
    .side-note{
      left:46px;
      bottom:78px;
      width:230px;
      padding:16px;
      transform:rotate(-4deg);
      background:rgba(23,26,29,.94);
      color:#f9f6ee;
    }
    .side-note .mini-badge{background:rgba(167,241,90,.16);color:var(--lime)}
    .side-note p{margin:10px 0 0;color:rgba(249,246,238,.76);font-size:13px;line-height:1.65}
    .accent-token{
      position:absolute;
      right:74px;
      top:210px;
      width:86px;
      height:86px;
      border-radius:28px;
      background:var(--lime);
      display:grid;
      place-items:center;
      font-size:34px;
      color:var(--ink);
      font-weight:900;
      box-shadow:0 22px 48px rgba(111,166,45,.25);
      transform:rotate(-9deg);
    }

    .metric-band{
      margin-top:34px;
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
    }
    .metric{
      padding:18px;
      border:1px solid var(--line);
      background:rgba(255,253,248,.7);
      border-radius:20px;
      box-shadow:0 10px 28px rgba(60,50,35,.05);
    }
    .metric b{display:block;color:var(--ink);font-size:18px;margin-bottom:5px}
    .metric span{display:block;color:var(--muted);font-size:13px;line-height:1.55}

    .guide-layout{
      display:grid;
      grid-template-columns:1.25fr .75fr;
      gap:18px;
      align-items:stretch;
    }
    .guide-main,.guide-small{
      background:var(--card-warm);
      border:1px solid var(--line);
      border-radius:var(--radius-xl);
      box-shadow:var(--shadow);
      transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
      overflow:hidden;
    }
    .guide-main:hover,.guide-small:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(167,241,90,.8)}
    .guide-main{
      min-height:360px;
      display:grid;
      grid-template-columns:1fr .88fr;
    }
    .guide-content{padding:34px}
    .guide-image{
      position:relative;
      min-height:310px;
      background:url("/assets/images/coverpic/cover-1.webp") center/cover;
    }
    .guide-image::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(90deg,rgba(255,253,248,.88),rgba(255,253,248,.12));
    }
    .card-number{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:40px;
      height:40px;
      border-radius:14px;
      background:var(--ink);
      color:var(--lime);
      font-weight:900;
      margin-bottom:22px;
    }
    .guide-content p,.guide-small p{color:var(--muted);margin-bottom:22px}
    .feature-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:10px;
    }
    .feature-list li{
      display:flex;
      align-items:flex-start;
      gap:10px;
      color:var(--text);
      font-size:15px;
    }
    .feature-list li::before{
      content:"";
      width:9px;
      height:9px;
      border-radius:50%;
      background:var(--lime);
      margin-top:10px;
      flex:0 0 auto;
    }
    .guide-side{
      display:grid;
      gap:18px;
    }
    .guide-small{padding:28px}
    .line-icon{
      width:48px;
      height:48px;
      border-radius:16px;
      border:1px solid var(--line-strong);
      background:
        linear-gradient(135deg,transparent 45%,rgba(167,241,90,.7) 45% 58%,transparent 58%),
        #fff;
      margin-bottom:20px;
      position:relative;
    }
    .line-icon::after{
      content:"";
      position:absolute;
      width:16px;
      height:16px;
      right:7px;
      bottom:7px;
      border-radius:50%;
      border:2px solid var(--ink);
    }

    .updates-shell{
      display:grid;
      grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);
      gap:20px;
      align-items:start;
    }
    .post-card{
      background:var(--card);
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      overflow:hidden;
      transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
    }
    .post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(217,143,69,.7)}
    .post-cover{
      position:relative;
      aspect-ratio:16/9;
      overflow:hidden;
      background:var(--cream-2);
    }
    .post-cover img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:transform .45s var(--ease);
    }
    .post-card:hover .post-cover img{transform:scale(1.045)}
    .post-cover::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,rgba(23,26,29,.02),rgba(23,26,29,.22));
    }
    .post-body{padding:24px}
    .post-meta{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
      margin-bottom:13px;
      color:var(--muted);
      font-size:13px;
      font-variant-numeric:tabular-nums;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      max-width:100%;
      padding:5px 10px;
      border-radius:999px;
      font-size:12px;
      font-weight:800;
      line-height:1.2;
      color:#315019;
      background:var(--lime-soft);
      border:1px solid rgba(167,241,90,.55);
    }
    .badge-copper{
      color:#7b4313;
      background:var(--copper-soft);
      border-color:rgba(217,143,69,.38);
    }
    .post-title{
      font-size:24px;
      line-height:1.38;
      margin:0 0 10px;
      letter-spacing:-.03em;
    }
    .post-title a{
      display:inline;
      background:linear-gradient(var(--lime),var(--lime)) left calc(100% - 1px)/0 8px no-repeat;
      transition:background-size .24s var(--ease),color .24s var(--ease);
    }
    .post-title a:hover{background-size:100% 8px;color:var(--ink)}
    .post-excerpt{
      color:var(--muted);
      margin:0 0 18px;
      display:-webkit-box;
      -webkit-line-clamp:3;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .text-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--ink);
      font-weight:800;
      font-size:14px;
    }
    .text-link::after{
      content:"→";
      transition:transform .2s var(--ease);
    }
    .text-link:hover::after{transform:translateX(4px)}
    .updates-list{
      display:grid;
      gap:14px;
    }
    .post-row{
      display:grid;
      grid-template-columns:118px minmax(0,1fr);
      gap:16px;
      align-items:center;
      padding:14px;
      background:rgba(255,253,248,.82);
      border:1px solid var(--line);
      border-radius:20px;
      transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease);
    }
    .post-row:hover{
      transform:translateY(-3px);
      border-color:rgba(167,241,90,.82);
      background:#fff;
      box-shadow:0 14px 35px rgba(60,50,35,.08);
    }
    .row-thumb{
      aspect-ratio:4/3;
      border-radius:16px;
      overflow:hidden;
      background:var(--cream-2);
    }
    .row-thumb img{width:100%;height:100%;object-fit:cover}
    .row-title{
      font-size:18px;
      line-height:1.42;
      margin:7px 0 6px;
    }
    .row-title a:hover{color:#2f4f12}
    .row-excerpt{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.65;
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
    }
    .empty-state{
      grid-column:1/-1;
      padding:42px;
      text-align:center;
      background:var(--card-warm);
      border:1px dashed var(--line-strong);
      border-radius:var(--radius-xl);
      box-shadow:var(--shadow);
    }
    .empty-graphic{
      width:76px;
      height:76px;
      margin:0 auto 18px;
      border-radius:24px;
      background:
        radial-gradient(circle at 68% 30%,var(--lime) 0 8px,transparent 9px),
        linear-gradient(135deg,var(--ink),#2d3134);
      position:relative;
    }
    .empty-graphic::after{
      content:"";
      position:absolute;
      left:18px;
      right:18px;
      bottom:20px;
      height:4px;
      border-radius:999px;
      background:rgba(255,255,255,.55);
      box-shadow:0 -12px 0 rgba(255,255,255,.35);
    }
    .empty-state p{margin:0 0 18px;color:var(--muted)}

    .principle{
      background:var(--ink);
      color:#f8f4ec;
      border-radius:36px;
      padding:46px;
      display:grid;
      grid-template-columns:.92fr 1.08fr;
      gap:44px;
      align-items:start;
      box-shadow:0 24px 70px rgba(23,26,29,.2);
      position:relative;
      overflow:hidden;
    }
    .principle::after{
      content:"";
      position:absolute;
      width:320px;
      height:320px;
      right:-120px;
      top:-120px;
      border-radius:50%;
      background:rgba(167,241,90,.14);
      filter:blur(2px);
    }
    .principle h2{color:#fff}
    .principle .section-desc{color:rgba(248,244,236,.72)}
    .timeline{
      position:relative;
      display:grid;
      gap:16px;
      z-index:1;
    }
    .timeline::before{
      content:"";
      position:absolute;
      left:18px;
      top:18px;
      bottom:18px;
      width:1px;
      background:rgba(226,222,211,.22);
    }
    .time-item{
      position:relative;
      display:grid;
      grid-template-columns:38px minmax(0,1fr);
      gap:14px;
      padding:18px;
      border-radius:20px;
      background:rgba(255,255,255,.055);
      border:1px solid rgba(226,222,211,.14);
    }
    .time-dot{
      width:38px;
      height:38px;
      border-radius:14px;
      background:var(--lime);
      color:var(--ink);
      display:grid;
      place-items:center;
      font-weight:900;
      z-index:1;
    }
    .time-item h3{font-size:18px;color:#fff;margin-bottom:4px}
    .time-item p{margin:0;color:rgba(248,244,236,.68);font-size:14px;line-height:1.7}

    .browse-path{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:30px;
      align-items:center;
    }
    .path-steps{
      display:grid;
      gap:14px;
      counter-reset:path;
    }
    .path-card{
      counter-increment:path;
      display:grid;
      grid-template-columns:54px minmax(0,1fr);
      gap:16px;
      align-items:start;
      padding:20px;
      border-radius:22px;
      background:rgba(255,253,248,.82);
      border:1px solid var(--line);
      transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
    }
    .path-card:hover{transform:translateX(4px);border-color:var(--copper);background:#fff}
    .path-card::before{
      content:counter(path);
      width:54px;
      height:54px;
      border-radius:18px;
      display:grid;
      place-items:center;
      background:var(--copper-soft);
      color:#7b4313;
      font-weight:900;
      font-size:20px;
    }
    .path-card h3{font-size:19px;margin-bottom:4px}
    .path-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .device-card{
      background:var(--card-warm);
      border:1px solid var(--line);
      border-radius:34px;
      padding:20px;
      box-shadow:var(--shadow);
      transform:rotate(1.5deg);
    }
    .browser-frame{
      border-radius:26px;
      overflow:hidden;
      border:1px solid var(--line-strong);
      background:#fff;
    }
    .browser-bar{
      display:flex;
      align-items:center;
      gap:7px;
      padding:14px 16px;
      background:#f1ecdf;
      border-bottom:1px solid var(--line);
    }
    .browser-bar i{width:9px;height:9px;border-radius:50%;background:var(--line-strong)}
    .browser-bar i:nth-child(2){background:var(--copper)}
    .browser-bar i:nth-child(3){background:var(--lime)}
    .browser-body{
      padding:18px;
      background:
        linear-gradient(rgba(255,253,248,.78),rgba(255,253,248,.86)),
        url("/assets/images/coverpic/cover-2.webp") center/cover;
      min-height:330px;
      display:grid;
      align-content:end;
    }
    .mock-list{
      display:grid;
      gap:10px;
    }
    .mock-item{
      padding:13px;
      border-radius:16px;
      background:rgba(255,253,248,.9);
      border:1px solid rgba(226,222,211,.8);
    }
    .mock-item strong{display:block;color:var(--ink);font-size:15px}
    .mock-item span{display:block;color:var(--muted);font-size:12px;margin-top:3px}

    .evidence-grid{
      display:grid;
      grid-template-columns:1fr 1.1fr 1fr;
      gap:18px;
    }
    .evidence-card{
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      background:rgba(255,253,248,.82);
      padding:26px;
      box-shadow:0 12px 34px rgba(60,50,35,.06);
    }
    .evidence-card.highlight{
      background:
        linear-gradient(135deg,rgba(167,241,90,.24),rgba(255,253,248,.92)),
        #fff;
      transform:translateY(-12px);
    }
    .evidence-card b{
      display:block;
      color:var(--ink);
      font-size:30px;
      line-height:1.1;
      letter-spacing:-.04em;
      margin-bottom:10px;
    }
    .evidence-card p{margin:0;color:var(--muted);font-size:15px;line-height:1.75}

    .faq-wrap{
      display:grid;
      grid-template-columns:.85fr 1.15fr;
      gap:34px;
      align-items:start;
    }
    .faq-note{
      position:sticky;
      top:110px;
      padding:30px;
      border-radius:var(--radius-xl);
      background:var(--card-warm);
      border:1px solid var(--line);
      box-shadow:var(--shadow);
    }
    .faq-note p{color:var(--muted);margin-bottom:22px}
    .faq-list{display:grid;gap:12px}
    .faq-item{
      border:1px solid var(--line);
      border-radius:20px;
      background:rgba(255,253,248,.82);
      overflow:hidden;
      transition:border-color .22s var(--ease),background .22s var(--ease),box-shadow .22s var(--ease);
    }
    .faq-item[open]{
      border-color:rgba(167,241,90,.88);
      background:#fff;
      box-shadow:0 12px 32px rgba(60,50,35,.07);
    }
    .faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:20px 56px 20px 22px;
      color:var(--ink);
      font-weight:800;
      position:relative;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{
      content:"+";
      position:absolute;
      right:20px;
      top:50%;
      transform:translateY(-50%);
      width:28px;
      height:28px;
      border-radius:50%;
      background:var(--lime-soft);
      color:var(--ink);
      display:grid;
      place-items:center;
      font-size:19px;
      transition:transform .22s var(--ease),background .22s var(--ease);
    }
    .faq-item[open] summary::after{content:"−";background:var(--lime);transform:translateY(-50%) rotate(180deg)}
    .faq-item p{
      margin:0;
      padding:0 22px 20px;
      color:var(--muted);
      font-size:15px;
      line-height:1.75;
    }

    .cta-panel{
      border-radius:38px;
      background:
        radial-gradient(circle at 82% 20%,rgba(167,241,90,.22),transparent 28%),
        linear-gradient(135deg,var(--ink),#222629);
      color:#f8f4ec;
      padding:46px;
      display:grid;
      grid-template-columns:.88fr 1.12fr;
      gap:36px;
      box-shadow:0 26px 76px rgba(23,26,29,.22);
      overflow:hidden;
    }
    .cta-panel h2{color:#fff}
    .cta-panel p{color:rgba(248,244,236,.72)}
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
    .feedback-form{
      display:grid;
      gap:14px;
      padding:22px;
      border-radius:28px;
      background:rgba(255,253,248,.08);
      border:1px solid rgba(226,222,211,.16);
      backdrop-filter:blur(10px);
    }
    .form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .field label{
      display:block;
      color:rgba(248,244,236,.86);
      font-weight:750;
      font-size:13px;
      margin-bottom:7px;
    }
    .field input,.field textarea{
      width:100%;
      border:1px solid rgba(226,222,211,.28);
      background:rgba(255,253,248,.92);
      color:var(--ink);
      border-radius:16px;
      padding:12px 14px;
      outline:none;
      transition:border-color .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);
    }
    .field textarea{min-height:112px;resize:vertical}
    .field input::placeholder,.field textarea::placeholder{color:#99958c}
    .field input:focus,.field textarea:focus{
      border-color:var(--lime);
      box-shadow:0 0 0 4px rgba(167,241,90,.18);
      background:#fff;
    }
    .form-hint{
      margin:0;
      color:rgba(248,244,236,.58)!important;
      font-size:13px;
      line-height:1.6;
    }
    .status-tip{
      display:none;
      padding:10px 12px;
      border-radius:14px;
      font-size:13px;
    }
    .status-tip.success{display:block;background:rgba(167,241,90,.14);color:#d7ffb2;border:1px solid rgba(167,241,90,.35)}
    .status-tip.error{background:rgba(196,91,79,.16);color:#ffd2cc;border:1px solid rgba(196,91,79,.35)}

    .site-footer{
      background:var(--ink);
      color:#f8f4ec;
      padding:58px 0 26px;
      margin-top:86px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:34px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(226,222,211,.14);
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff;
      font-weight:850;
      font-size:18px;
      margin-bottom:14px;
    }
    .footer-brand .brand-mark{box-shadow:none;border:1px solid rgba(255,255,255,.1)}
    .footer-text{
      max-width:460px;
      color:rgba(248,244,236,.66);
      margin:0;
      font-size:15px;
      line-height:1.8;
    }
    .footer-title{
      color:#fff;
      font-size:15px;
      font-weight:850;
      margin:0 0 14px;
    }
    .footer-links{
      display:grid;
      gap:9px;
    }
    .footer-links a{
      color:rgba(248,244,236,.66);
      font-size:14px;
      transition:color .2s var(--ease),transform .2s var(--ease);
    }
    .footer-links a:hover{color:var(--lime);transform:translateX(3px)}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:18px;
      padding-top:22px;
      color:rgba(248,244,236,.52);
      font-size:13px;
    }
    .footer-line{
      width:72px;
      height:4px;
      border-radius:999px;
      background:var(--lime);
      margin-bottom:18px;
    }

    @media (max-width:1100px){
      .nav-links{gap:2px}
      .nav-links a{padding:9px 11px}
      .hero-grid{grid-template-columns:1fr;gap:26px}
      .hero-visual{min-height:460px}
      .metric-band{grid-template-columns:repeat(2,1fr)}
      .guide-main{grid-template-columns:1fr}
      .guide-image{min-height:240px;order:-1}
      .updates-shell,.principle,.browse-path,.faq-wrap,.cta-panel{grid-template-columns:1fr}
      .faq-note{position:relative;top:auto}
      .evidence-grid{grid-template-columns:1fr 1fr}
      .evidence-card.highlight{transform:none}
    }

    @media (max-width:860px){
      .container{width:min(100% - 48px,var(--container))}
      .site-header{height:72px}
      .menu-toggle{display:flex}
      .nav-links{
        position:absolute;
        left:24px;
        right:24px;
        top:82px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        padding:12px;
        border-radius:24px;
        background:rgba(255,253,248,.98);
        box-shadow:0 22px 60px rgba(60,50,35,.14);
      }
      .nav-links.is-open{display:flex}
      .nav-links a{padding:13px 14px;text-align:center}
      .header-actions .btn{display:none}
      .section{padding:64px 0}
      .section-head{display:block}
      .section-desc{margin-top:8px}
      .hero{padding:44px 0 28px;min-height:auto}
      .hero-copy{padding:6px 0}
      .hero-actions .btn{flex:1 1 180px}
      .guide-layout{grid-template-columns:1fr}
      .post-row{grid-template-columns:96px minmax(0,1fr)}
      .principle,.cta-panel{padding:32px;border-radius:30px}
      .footer-grid{grid-template-columns:1fr 1fr}
    }

    @media (max-width:620px){
      .container{width:calc(100% - 32px)}
      .brand-text{font-size:16px}
      .brand-mark{width:38px;height:38px;border-radius:13px}
      .hero-visual{min-height:390px;border-radius:28px;padding:16px}
      .resource-panel{left:16px;right:16px;top:26px}
      .update-card{width:auto;left:120px;right:16px;bottom:24px}
      .side-note{left:16px;bottom:110px;width:190px}
      .accent-token{display:none}
      .metric-band{grid-template-columns:1fr}
      .post-row{grid-template-columns:1fr}
      .row-thumb{aspect-ratio:16/9}
      .form-row{grid-template-columns:1fr}
      .evidence-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{flex-direction:column;align-items:flex-start}
      .cta-actions .btn,.feedback-form .btn{width:100%}
      .principle,.cta-panel{padding:24px;border-radius:24px}
    }

    @media (max-width:420px){
      .trust-strip li{width:100%;justify-content:flex-start}
      .hero-actions{display:grid}
      .hero-actions .btn{width:100%}
      .panel-title{font-size:20px}
      .side-note{display:none}
      .update-card{left:16px}
      .post-body{padding:20px}
      .section{padding:52px 0}
    }

/* roulang page: article */
:root{
      --ink:#171A1D;
      --ink-soft:#24282b;
      --text:#3C3F40;
      --muted:#77766F;
      --line:#E2DED3;
      --line-strong:#d3cbbd;
      --lime:#A7F15A;
      --lime-soft:#edfbd8;
      --copper:#D98F45;
      --copper-soft:#fbeddc;
      --cream:#F7F3EA;
      --cream-2:#EFEAE0;
      --card:#FFFFFF;
      --card-warm:#FFFDF8;
      --danger:#c45b4f;
      --success:#5f9e31;
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --radius-sm:12px;
      --shadow:0 18px 55px rgba(60,50,35,.08);
      --shadow-hover:0 24px 70px rgba(60,50,35,.14);
      --container:1200px;
      --ease:cubic-bezier(.2,.8,.2,1);
      --header-h:78px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 8%, rgba(167,241,90,.22), transparent 30%),
        radial-gradient(circle at 88% 18%, rgba(217,143,69,.12), transparent 28%),
        linear-gradient(180deg,var(--cream) 0%,#fbf8f0 42%,var(--cream-2) 100%);
      line-height:1.78;
      overflow-x:hidden;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    button{border:0;cursor:pointer}
    ::selection{background:rgba(167,241,90,.55);color:var(--ink)}
    .container{
      width:min(var(--container),calc(100% - 64px));
      margin:0 auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:100;
      height:var(--header-h);
      background:rgba(247,243,234,.88);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(226,222,211,.74);
      transition:box-shadow .25s var(--ease),background .25s var(--ease);
    }
    .site-header.is-scrolled{box-shadow:0 10px 28px rgba(60,50,35,.08);background:rgba(247,243,234,.96)}
    .nav-wrap{
      height:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
      font-weight:800;
      color:var(--ink);
      letter-spacing:-.02em;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:15px;
      background:var(--ink);
      position:relative;
      box-shadow:inset 0 0 0 1px rgba(255,255,255,.08),0 10px 24px rgba(23,26,29,.16);
      overflow:hidden;
      flex:0 0 auto;
    }
    .brand-mark::before{
      content:"";
      position:absolute;
      width:20px;
      height:20px;
      left:7px;
      top:7px;
      border-radius:7px;
      border:2px solid var(--lime);
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      width:9px;
      height:9px;
      right:9px;
      bottom:9px;
      border-radius:50%;
      background:var(--copper);
      box-shadow:0 -16px 0 rgba(167,241,90,.55);
    }
    .brand-text{font-size:18px;line-height:1.15}
    .nav-links{
      display:flex;
      align-items:center;
      gap:6px;
      padding:7px;
      background:rgba(255,253,248,.64);
      border:1px solid rgba(226,222,211,.78);
      border-radius:999px;
    }
    .nav-links a{
      position:relative;
      padding:9px 15px;
      border-radius:999px;
      color:var(--ink-soft);
      font-size:14px;
      font-weight:650;
      transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
    }
    .nav-links a:hover,.nav-links a.active{
      background:var(--ink);
      color:var(--lime);
      transform:translateY(-1px);
    }
    .header-actions{display:flex;align-items:center;gap:10px}
    .menu-toggle{
      display:none;
      width:44px;
      height:44px;
      border-radius:14px;
      background:var(--card-warm);
      border:1px solid var(--line);
      color:var(--ink);
      align-items:center;
      justify-content:center;
    }
    .menu-toggle span,.menu-toggle span::before,.menu-toggle span::after{
      content:"";
      display:block;
      width:18px;
      height:2px;
      background:currentColor;
      border-radius:999px;
      transition:transform .2s var(--ease),opacity .2s var(--ease);
    }
    .menu-toggle span::before{transform:translateY(-6px)}
    .menu-toggle span::after{transform:translateY(4px)}
    .menu-toggle.is-open span{transform:rotate(45deg)}
    .menu-toggle.is-open span::before{opacity:0}
    .menu-toggle.is-open span::after{transform:translateY(-2px) rotate(-90deg)}
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:11px 18px;
      border-radius:999px;
      font-weight:750;
      font-size:14px;
      line-height:1;
      border:1px solid transparent;
      transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),color .22s var(--ease);
      white-space:nowrap;
    }
    .btn-primary{
      background:var(--ink);
      color:var(--lime);
      box-shadow:0 12px 28px rgba(23,26,29,.16);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(23,26,29,.22);background:#0f1113;color:var(--lime)}
    .btn-lime{
      background:var(--lime);
      color:var(--ink);
      box-shadow:0 14px 30px rgba(111,166,45,.18);
    }
    .btn-lime:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(111,166,45,.26);background:#b5ff6d;color:var(--ink)}
    .btn-secondary{
      background:rgba(255,253,248,.72);
      color:var(--ink);
      border-color:var(--line-strong);
    }
    .btn-secondary:hover{transform:translateY(-2px);background:#fff;border-color:var(--copper);color:var(--ink)}
    .btn:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{
      outline:3px solid rgba(167,241,90,.75);
      outline-offset:3px;
    }
    main{display:block}
    .section{padding:86px 0}
    .section-tight{padding:64px 0}
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:flex-end;
      gap:28px;
      margin-bottom:34px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--ink);
      font-size:13px;
      font-weight:800;
      letter-spacing:.04em;
      padding:7px 12px;
      border:1px solid var(--line);
      border-radius:999px;
      background:rgba(255,253,248,.72);
      margin-bottom:14px;
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--lime);
      box-shadow:0 0 0 4px rgba(167,241,90,.18);
    }
    .section-title{
      margin:0;
      color:var(--ink);
      font-size:clamp(28px,3vw,38px);
      line-height:1.22;
      font-weight:820;
      letter-spacing:-.035em;
    }
    .section-desc{
      margin:12px 0 0;
      color:var(--muted);
      font-size:16px;
      max-width:680px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:6px;
      border-radius:999px;
      padding:7px 11px;
      font-size:12px;
      font-weight:800;
      letter-spacing:.02em;
      width:max-content;
      white-space:nowrap;
    }
    .badge-lime{background:var(--lime-soft);color:#3b6518;border:1px solid rgba(167,241,90,.45)}
    .badge-copper{background:var(--copper-soft);color:#7e4a18;border:1px solid rgba(217,143,69,.28)}
    .badge-dark{background:var(--ink);color:var(--lime);border:1px solid rgba(255,255,255,.08)}
    .card-surface{
      background:rgba(255,253,248,.82);
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow);
      transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease),background .24s var(--ease);
    }
    .card-surface:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(167,241,90,.82);
      background:#fff;
    }

    .article-hero{
      position:relative;
      padding:54px 0 38px;
      overflow:hidden;
    }
    .article-hero::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg,rgba(247,243,234,.96),rgba(247,243,234,.72)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      z-index:-2;
    }
    .article-hero::after{
      content:"";
      position:absolute;
      right:-120px;
      top:30px;
      width:360px;
      height:360px;
      border-radius:50%;
      background:rgba(167,241,90,.2);
      filter:blur(8px);
      z-index:-1;
    }
    .breadcrumb{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:9px;
      margin:0 0 22px;
      font-size:13px;
      color:var(--muted);
    }
    .breadcrumb a{
      color:var(--ink-soft);
      font-weight:700;
      position:relative;
    }
    .breadcrumb a:hover{color:#5f9e31}
    .breadcrumb .split{color:#aaa39a}
    .breadcrumb .current{
      color:var(--ink);
      max-width:560px;
      overflow:hidden;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .article-kicker{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
      margin-bottom:18px;
    }
    .article-title{
      max-width:930px;
      margin:0;
      color:var(--ink);
      font-size:clamp(32px,5vw,54px);
      line-height:1.16;
      font-weight:860;
      letter-spacing:-.045em;
    }
    .article-summary{
      max-width:820px;
      margin:20px 0 0;
      color:#4b4d4b;
      font-size:17px;
      line-height:1.85;
    }
    .meta-row{
      margin-top:24px;
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:10px;
      color:var(--muted);
      font-size:14px;
    }
    .meta-item{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border:1px solid rgba(226,222,211,.86);
      background:rgba(255,253,248,.72);
      border-radius:999px;
    }
    .meta-dot{
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--copper);
    }

    .article-shell{
      padding:54px 0 86px;
    }
    .article-layout{
      display:grid;
      grid-template-columns:minmax(0,820px) 320px;
      gap:34px;
      align-items:start;
    }
    .article-main{
      min-width:0;
    }
    .cover-card{
      margin-bottom:26px;
      border-radius:var(--radius-xl);
      overflow:hidden;
      border:1px solid var(--line);
      box-shadow:var(--shadow);
      background:var(--card-warm);
      position:relative;
    }
    .cover-card img{
      width:100%;
      aspect-ratio:16/9;
      object-fit:cover;
      transform:scale(1.01);
    }
    .cover-card::after{
      content:"99在线精品资源站 · 内容动态";
      position:absolute;
      left:18px;
      bottom:18px;
      display:inline-flex;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(23,26,29,.82);
      color:var(--lime);
      font-size:12px;
      font-weight:800;
      backdrop-filter:blur(8px);
    }
    .reader-card{
      padding:38px;
      border-radius:var(--radius-xl);
      background:rgba(255,253,248,.92);
      border:1px solid var(--line);
      box-shadow:var(--shadow);
    }
    .article-content{
      color:var(--text);
      font-size:17px;
      line-height:1.88;
      overflow-wrap:anywhere;
    }
    .article-content > *:first-child{margin-top:0}
    .article-content > *:last-child{margin-bottom:0}
    .article-content p{margin:0 0 1.25em}
    .article-content h2{
      position:relative;
      margin:2.05em 0 .75em;
      padding-left:18px;
      color:var(--ink);
      font-size:clamp(24px,2.5vw,31px);
      line-height:1.32;
      font-weight:820;
      letter-spacing:-.025em;
    }
    .article-content h2::before{
      content:"";
      position:absolute;
      left:0;
      top:.32em;
      width:6px;
      height:1.05em;
      border-radius:999px;
      background:var(--lime);
      box-shadow:0 0 0 5px rgba(167,241,90,.15);
    }
    .article-content h3{
      margin:1.75em 0 .65em;
      color:var(--ink-soft);
      font-size:22px;
      line-height:1.4;
      font-weight:780;
    }
    .article-content h4{
      margin:1.5em 0 .55em;
      color:var(--ink);
      font-size:18px;
      font-weight:780;
    }
    .article-content a{
      color:#456f1f;
      font-weight:760;
      background:linear-gradient(currentColor,currentColor) left bottom/0 1px no-repeat;
      transition:background-size .22s var(--ease),color .22s var(--ease);
    }
    .article-content a:hover{
      color:var(--ink);
      background-size:100% 1px;
    }
    .article-content ul,.article-content ol{
      margin:0 0 1.35em;
      padding-left:1.35em;
    }
    .article-content li{margin:.35em 0;padding-left:.15em}
    .article-content blockquote{
      margin:1.6em 0;
      padding:20px 22px;
      border-left:5px solid var(--lime);
      border-radius:18px;
      background:linear-gradient(90deg,rgba(167,241,90,.16),rgba(255,253,248,.86));
      color:#333735;
      font-weight:650;
    }
    .article-content img{
      border-radius:20px;
      border:1px solid var(--line);
      box-shadow:0 14px 34px rgba(60,50,35,.08);
      margin:1.6em auto;
    }
    .article-content figure{margin:1.7em 0}
    .article-content figcaption{
      margin-top:10px;
      text-align:center;
      color:var(--muted);
      font-size:13px;
    }
    .article-content table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      min-width:640px;
      overflow:hidden;
    }
    .article-content table,
    .article-content .table-wrap{
      display:block;
      overflow-x:auto;
      border-radius:18px;
    }
    .article-content th,.article-content td{
      border-bottom:1px solid var(--line);
      padding:13px 14px;
      text-align:left;
      vertical-align:top;
    }
    .article-content th{
      background:var(--ink);
      color:var(--lime);
      font-weight:800;
    }
    .article-content tr:nth-child(even) td{background:rgba(247,243,234,.48)}
    .article-content code{
      padding:.16em .42em;
      border-radius:8px;
      background:var(--cream-2);
      color:#2d312f;
      font-size:.92em;
    }
    .article-content pre{
      overflow:auto;
      padding:18px;
      border-radius:18px;
      background:#1e2224;
      color:#edfbd8;
      line-height:1.75;
    }
    .empty-state{
      display:grid;
      place-items:center;
      text-align:center;
      min-height:340px;
      padding:28px;
      border:1px dashed var(--line-strong);
      border-radius:var(--radius-lg);
      background:linear-gradient(135deg,rgba(167,241,90,.12),rgba(217,143,69,.08));
    }
    .empty-icon{
      width:72px;
      height:72px;
      border-radius:24px;
      margin:0 auto 18px;
      background:var(--ink);
      position:relative;
      box-shadow:0 16px 35px rgba(23,26,29,.18);
    }
    .empty-icon::before{
      content:"";
      position:absolute;
      inset:17px;
      border:2px solid var(--lime);
      border-radius:13px;
    }
    .empty-icon::after{
      content:"";
      position:absolute;
      right:18px;
      bottom:18px;
      width:10px;
      height:10px;
      border-radius:50%;
      background:var(--copper);
    }
    .empty-state h2{
      margin:0 0 10px;
      color:var(--ink);
      font-size:28px;
      font-weight:820;
    }
    .empty-state p{
      margin:0 0 22px;
      color:var(--muted);
      max-width:480px;
    }

    .article-aside{
      position:sticky;
      top:calc(var(--header-h) + 22px);
      display:grid;
      gap:18px;
    }
    .aside-card{
      padding:22px;
      border-radius:var(--radius-lg);
      background:rgba(255,253,248,.82);
      border:1px solid var(--line);
      box-shadow:var(--shadow);
    }
    .aside-title{
      margin:0 0 14px;
      color:var(--ink);
      font-size:16px;
      font-weight:820;
      display:flex;
      align-items:center;
      gap:9px;
    }
    .aside-title::before{
      content:"";
      width:10px;
      height:10px;
      border-radius:50%;
      background:var(--lime);
      box-shadow:0 0 0 5px rgba(167,241,90,.16);
    }
    .aside-text{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.72;
    }
    .aside-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:10px;
    }
    .aside-list a{
      display:flex;
      justify-content:space-between;
      gap:12px;
      padding:12px 13px;
      border-radius:14px;
      background:rgba(247,243,234,.58);
      border:1px solid transparent;
      color:var(--ink-soft);
      font-size:14px;
      font-weight:700;
      transition:transform .2s var(--ease),border-color .2s var(--ease),background .2s var(--ease);
    }
    .aside-list a:hover{
      transform:translateX(3px);
      border-color:rgba(167,241,90,.7);
      background:#fff;
    }
    .aside-list span:last-child{color:var(--copper)}
    .mini-actions{
      display:grid;
      gap:10px;
      margin-top:18px;
    }

    .updates-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .update-card{
      overflow:hidden;
      min-height:100%;
    }
    .update-thumb{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius-lg) var(--radius-lg) 0 0;
      background:var(--cream-2);
    }
    .update-thumb img{
      width:100%;
      aspect-ratio:16/10;
      object-fit:cover;
      transition:transform .4s var(--ease);
    }
    .update-card:hover .update-thumb img{transform:scale(1.05)}
    .update-body{
      padding:20px;
    }
    .update-date{
      display:block;
      margin:12px 0 8px;
      color:var(--muted);
      font-size:13px;
      font-variant-numeric:tabular-nums;
    }
    .update-title{
      margin:0;
      color:var(--ink);
      font-size:19px;
      line-height:1.42;
      font-weight:820;
    }
    .update-title a{
      background:linear-gradient(var(--lime),var(--lime)) left 100%/0 8px no-repeat;
      transition:background-size .25s var(--ease);
    }
    .update-title a:hover{background-size:100% 8px;color:var(--ink)}
    .update-desc{
      margin:10px 0 0;
      color:var(--muted);
      font-size:14px;
      line-height:1.7;
    }
    .text-link{
      display:inline-flex;
      align-items:center;
      gap:6px;
      color:var(--ink);
      font-weight:800;
      margin-top:14px;
      transition:gap .2s var(--ease),color .2s var(--ease);
    }
    .text-link:hover{gap:10px;color:#5f9e31}

    .selected-panel{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:22px;
      align-items:stretch;
    }
    .selected-note{
      padding:30px;
      border-radius:var(--radius-xl);
      background:var(--ink);
      color:#fff8eb;
      min-height:260px;
      position:relative;
      overflow:hidden;
    }
    .selected-note::after{
      content:"";
      position:absolute;
      right:-48px;
      bottom:-62px;
      width:220px;
      height:220px;
      border-radius:50%;
      background:rgba(167,241,90,.18);
    }
    .selected-note h2{
      position:relative;
      z-index:1;
      margin:0 0 12px;
      color:#fff;
      font-size:30px;
      line-height:1.25;
      font-weight:840;
    }
    .selected-note p{
      position:relative;
      z-index:1;
      margin:0;
      color:rgba(255,248,235,.76);
      font-size:16px;
    }
    .selected-list{
      display:grid;
      gap:14px;
    }
    .selected-item{
      padding:20px;
      border-radius:var(--radius-lg);
      background:rgba(255,253,248,.86);
      border:1px solid var(--line);
      transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
    }
    .selected-item:hover{
      transform:translateY(-3px);
      border-color:rgba(217,143,69,.48);
      background:#fff;
    }
    .selected-item h3{
      margin:0 0 8px;
      color:var(--ink);
      font-size:18px;
      font-weight:820;
    }
    .selected-item p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.72;
    }

    .faq-wrap{
      max-width:880px;
      margin:0 auto;
      display:grid;
      gap:14px;
    }
    .faq-item{
      border:1px solid var(--line);
      border-radius:20px;
      background:rgba(255,253,248,.86);
      box-shadow:0 10px 28px rgba(60,50,35,.05);
      overflow:hidden;
    }
    .faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:20px 22px;
      color:var(--ink);
      font-weight:820;
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:18px;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{
      content:"+";
      flex:0 0 auto;
      width:28px;
      height:28px;
      display:grid;
      place-items:center;
      border-radius:50%;
      background:var(--lime-soft);
      color:var(--ink);
      font-weight:900;
      transition:transform .22s var(--ease),background .22s var(--ease);
    }
    .faq-item[open] summary::after{
      content:"−";
      transform:rotate(180deg);
      background:var(--lime);
    }
    .faq-item p{
      margin:0;
      padding:0 22px 22px;
      color:var(--muted);
      font-size:15px;
      line-height:1.78;
    }

    .contact-card{
      position:relative;
      overflow:hidden;
      border-radius:var(--radius-xl);
      background:var(--ink);
      color:#fff;
      padding:38px;
      display:grid;
      grid-template-columns:1fr 390px;
      gap:32px;
      align-items:center;
      box-shadow:0 24px 70px rgba(23,26,29,.22);
    }
    .contact-card::before{
      content:"";
      position:absolute;
      inset:auto -80px -110px auto;
      width:330px;
      height:330px;
      border-radius:50%;
      background:rgba(167,241,90,.16);
    }
    .contact-card h2{
      position:relative;
      z-index:1;
      margin:0 0 12px;
      font-size:34px;
      line-height:1.25;
      font-weight:850;
      color:#fff;
    }
    .contact-card p{
      position:relative;
      z-index:1;
      margin:0 0 24px;
      color:rgba(255,248,235,.74);
      max-width:650px;
    }
    .feedback-form{
      position:relative;
      z-index:1;
      display:grid;
      gap:12px;
      padding:18px;
      border-radius:22px;
      background:rgba(255,253,248,.08);
      border:1px solid rgba(255,255,255,.14);
    }
    .field{
      display:grid;
      gap:7px;
    }
    .field label{
      color:rgba(255,248,235,.86);
      font-size:13px;
      font-weight:760;
    }
    .field input,.field textarea{
      width:100%;
      border:1px solid rgba(255,255,255,.18);
      border-radius:14px;
      background:rgba(255,253,248,.92);
      color:var(--ink);
      padding:12px 13px;
      outline:0;
      transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
    }
    .field textarea{min-height:98px;resize:vertical}
    .field input:focus,.field textarea:focus{
      border-color:var(--lime);
      box-shadow:0 0 0 4px rgba(167,241,90,.18);
    }
    .form-hint{
      margin:0;
      color:rgba(255,248,235,.62);
      font-size:12px;
      line-height:1.55;
    }

    .site-footer{
      background:var(--ink);
      color:#f8f0df;
      padding:54px 0 24px;
    }
    .footer-line{
      width:86px;
      height:5px;
      border-radius:999px;
      background:var(--lime);
      margin-bottom:28px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.3fr .7fr .7fr;
      gap:34px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,255,255,.12);
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff;
      font-size:19px;
      font-weight:850;
      margin-bottom:14px;
    }
    .footer-text{
      margin:0;
      color:rgba(248,240,223,.68);
      max-width:520px;
      font-size:14px;
      line-height:1.8;
    }
    .footer-title{
      margin:0 0 12px;
      color:#fff;
      font-size:15px;
      font-weight:820;
    }
    .footer-links{
      display:grid;
      gap:9px;
    }
    .footer-links a{
      color:rgba(248,240,223,.68);
      font-size:14px;
      transition:color .2s var(--ease),transform .2s var(--ease);
    }
    .footer-links a:hover{
      color:var(--lime);
      transform:translateX(3px);
    }
    .footer-bottom{
      padding-top:20px;
      display:flex;
      justify-content:space-between;
      gap:16px;
      color:rgba(248,240,223,.52);
      font-size:13px;
    }

    @media (max-width:1100px){
      .container{width:min(var(--container),calc(100% - 48px))}
      .nav-links a{padding:9px 11px}
      .header-actions .btn{display:none}
      .article-layout{grid-template-columns:1fr}
      .article-aside{
        position:static;
        grid-template-columns:repeat(3,1fr);
      }
      .contact-card{grid-template-columns:1fr}
      .updates-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:860px){
      :root{--header-h:70px}
      .container{width:min(var(--container),calc(100% - 40px))}
      .brand-text{font-size:16px}
      .menu-toggle{display:flex}
      .nav-links{
        position:absolute;
        top:calc(100% + 10px);
        left:20px;
        right:20px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        padding:12px;
        border-radius:22px;
        background:rgba(255,253,248,.96);
        box-shadow:var(--shadow-hover);
      }
      .nav-links.is-open{display:flex}
      .nav-links a{
        text-align:center;
        padding:12px 14px;
      }
      .article-hero{padding:40px 0 30px}
      .article-summary{font-size:16px}
      .reader-card{padding:28px}
      .article-aside{grid-template-columns:1fr}
      .selected-panel{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-grid>div:first-child{grid-column:1/-1}
    }
    @media (max-width:640px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .section{padding:62px 0}
      .section-tight{padding:46px 0}
      .section-head{
        display:block;
        margin-bottom:24px;
      }
      .breadcrumb .current{max-width:230px}
      .meta-row{align-items:flex-start}
      .meta-item{width:max-content;max-width:100%}
      .cover-card{border-radius:22px}
      .reader-card{
        padding:22px;
        border-radius:22px;
      }
      .article-content{font-size:16px;line-height:1.86}
      .article-content h2{font-size:24px}
      .article-content h3{font-size:20px}
      .updates-grid{grid-template-columns:1fr}
      .contact-card{
        padding:26px;
        border-radius:24px;
      }
      .contact-card h2{font-size:28px}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{
        flex-direction:column;
        gap:8px;
      }
      .btn{width:100%}
      .mini-actions .btn{width:100%}
    }
    @media (max-width:420px){
      .container{width:min(var(--container),calc(100% - 28px))}
      .brand-mark{width:38px;height:38px;border-radius:14px}
      .brand-text{font-size:15px}
      .article-title{font-size:30px}
      .reader-card{padding:18px}
      .cover-card::after{left:12px;bottom:12px}
      .contact-card{padding:22px}
    }

/* 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}