/* roulang page: index */
:root{
      --color-primary:#3b6f9f;
      --color-primary-strong:#275a86;
      --color-primary-soft:#eaf3fb;
      --color-accent:#b58a4a;
      --color-accent-soft:#fff6e8;
      --color-green:#4d8a82;
      --color-bg:#f7f9fc;
      --color-surface:#ffffff;
      --color-surface-soft:#fbfcff;
      --color-text:#1f2d3d;
      --color-muted:#637587;
      --color-light:#8ea0b3;
      --color-border:#dce6ef;
      --shadow-sm:0 8px 22px rgba(31,45,61,.06);
      --shadow-md:0 18px 45px rgba(31,45,61,.10);
      --radius-sm:12px;
      --radius-md:16px;
      --radius-lg:22px;
      --container:1180px;
      --section:88px;
      --transition:all .24s ease;
    }
    *{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(--color-text);
      background:linear-gradient(180deg,#fff 0%,#f7f9fc 52%,#fff 100%);
      font-size:16px;
      line-height:1.8;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none;transition:var(--transition)}
    a:hover,a:focus{color:var(--color-primary)}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    input,select,textarea{
      width:100%;
      border:1px solid var(--color-border);
      border-radius:14px;
      padding:13px 15px;
      background:#fff;
      color:var(--color-text);
      outline:none;
      transition:var(--transition);
      box-shadow:0 1px 0 rgba(31,45,61,.02);
    }
    input:focus,select:focus,textarea:focus{
      border-color:rgba(59,111,159,.72);
      box-shadow:0 0 0 4px rgba(59,111,159,.12);
    }
    .site-wrap{overflow:hidden}
    .container{
      width:min(var(--container),calc(100% - 40px));
      margin:0 auto;
    }
    .top-note{
      background:#fbfdff;
      border-bottom:1px solid var(--color-border);
      color:var(--color-muted);
      font-size:13px;
    }
    .top-note .container{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      min-height:38px;
    }
    .note-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      white-space:nowrap;
    }
    .note-dot{
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--color-accent);
      box-shadow:0 0 0 4px rgba(181,138,74,.12);
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(255,255,255,.88);
      backdrop-filter:blur(16px);
      border-bottom:1px solid rgba(220,230,239,.82);
    }
    .nav-bar{
      display:flex;
      align-items:center;
      justify-content:space-between;
      min-height:76px;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:220px;
    }
    .brand-mark{
      width:38px;
      height:38px;
      border-radius:14px;
      background:linear-gradient(145deg,var(--color-primary-soft),#fff);
      border:1px solid var(--color-border);
      display:grid;
      place-items:center;
      color:var(--color-primary);
      font-weight:700;
      box-shadow:var(--shadow-sm);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.25;
    }
    .brand-title{
      font-weight:700;
      font-size:17px;
      letter-spacing:.01em;
      color:var(--color-text);
    }
    .brand-sub{
      font-size:12px;
      color:var(--color-light);
      margin-top:2px;
    }
    .nav-links{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      margin:0;
      list-style:none;
      flex:1;
    }
    .nav-links a{
      position:relative;
      display:inline-flex;
      align-items:center;
      padding:9px 14px;
      border-radius:999px;
      color:#405264;
      font-weight:500;
      font-size:15px;
    }
    .nav-links a:hover{
      background:var(--color-primary-soft);
      color:var(--color-primary-strong);
    }
    .nav-links a.active{
      color:var(--color-primary-strong);
      background:#f4f8fc;
    }
    .nav-links a.active:after{
      content:"";
      position:absolute;
      left:50%;
      bottom:4px;
      width:18px;
      height:2px;
      border-radius:2px;
      background:var(--color-primary);
      transform:translateX(-50%);
    }
    .nav-actions{
      display:flex;
      align-items:center;
      gap:12px;
    }
    .search-mini{
      width:184px;
      height:40px;
      padding:0 13px 0 36px;
      border-radius:999px;
      background:#fff url("data:image/svg+xml,%3Csvg width='16' height='16' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M7.2 12.4a5.2 5.2 0 1 0 0-10.4 5.2 5.2 0 0 0 0 10.4ZM11 11l3 3' stroke='%238EA0B3' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat 13px center;
      font-size:14px;
    }
    .mobile-toggle{
      display:none;
      width:42px;
      height:42px;
      border:1px solid var(--color-border);
      border-radius:14px;
      background:#fff;
      color:var(--color-primary);
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:12px 20px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:650;
      line-height:1;
      transition:var(--transition);
      white-space:nowrap;
    }
    .btn-primary{
      background:var(--color-primary);
      color:#fff;
      box-shadow:0 12px 28px rgba(59,111,159,.22);
    }
    .btn-primary:hover,.btn-primary:focus{
      background:var(--color-primary-strong);
      color:#fff;
      transform:translateY(-3px);
      box-shadow:0 18px 36px rgba(59,111,159,.28);
    }
    .btn-outline{
      background:#fff;
      color:var(--color-primary-strong);
      border-color:rgba(59,111,159,.28);
    }
    .btn-outline:hover,.btn-outline:focus{
      background:var(--color-primary-soft);
      border-color:rgba(59,111,159,.48);
      transform:translateY(-3px);
    }
    .btn-soft{
      background:var(--color-primary-soft);
      color:var(--color-primary-strong);
      border-color:#d6e8f7;
    }
    .btn-soft:hover{
      background:#dfedf8;
      color:var(--color-primary-strong);
      transform:translateY(-2px);
    }
    .hero{
      padding:72px 0 52px;
      position:relative;
    }
    .hero:before{
      content:"";
      position:absolute;
      inset:0 auto auto 50%;
      width:620px;
      height:620px;
      background:radial-gradient(circle,rgba(59,111,159,.13),rgba(255,255,255,0) 65%);
      transform:translate(-10%,-25%);
      pointer-events:none;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--color-border);
      color:var(--color-primary-strong);
      font-size:13px;
      font-weight:650;
      box-shadow:var(--shadow-sm);
    }
    .eyebrow:before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--color-green);
    }
    h1,h2,h3,h4,p{margin-top:0}
    h1{
      margin:22px 0 18px;
      font-size:clamp(34px,5vw,58px);
      line-height:1.14;
      letter-spacing:-.04em;
      font-weight:750;
      color:#172536;
    }
    .hero-lead{
      max-width:650px;
      font-size:18px;
      color:var(--color-muted);
      line-height:1.9;
      margin-bottom:28px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      margin-bottom:28px;
    }
    .hero-trust{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      color:var(--color-muted);
      font-size:14px;
    }
    .trust-item{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:7px 11px;
      border:1px solid var(--color-border);
      border-radius:999px;
      background:rgba(255,255,255,.78);
    }
    .trust-item span{
      width:6px;
      height:6px;
      border-radius:50%;
      background:var(--color-accent);
    }
    .dashboard{
      position:relative;
      background:rgba(255,255,255,.86);
      border:1px solid var(--color-border);
      border-radius:var(--radius-lg);
      padding:22px;
      box-shadow:var(--shadow-md);
      overflow:hidden;
    }
    .dashboard:after{
      content:"";
      position:absolute;
      right:-60px;
      top:-60px;
      width:190px;
      height:190px;
      background:radial-gradient(circle,rgba(181,138,74,.12),transparent 68%);
    }
    .dash-head{
      display:flex;
      justify-content:space-between;
      align-items:flex-start;
      gap:16px;
      margin-bottom:18px;
      position:relative;
      z-index:1;
    }
    .dash-head h2{
      font-size:20px;
      line-height:1.35;
      margin-bottom:4px;
      font-weight:700;
    }
    .dash-head p{
      color:var(--color-muted);
      margin:0;
      font-size:14px;
    }
    .status-badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      border-radius:999px;
      padding:7px 10px;
      background:var(--color-accent-soft);
      color:#8a672f;
      font-size:12px;
      font-weight:700;
      white-space:nowrap;
    }
    .status-badge:before{
      content:"";
      width:6px;
      height:6px;
      border-radius:50%;
      background:var(--color-accent);
    }
    .metric-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:12px;
      position:relative;
      z-index:1;
    }
    .metric-card{
      background:var(--color-surface-soft);
      border:1px solid var(--color-border);
      border-radius:18px;
      padding:16px;
      transition:var(--transition);
    }
    .metric-card:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-sm);
    }
    .metric-label{
      color:var(--color-muted);
      font-size:13px;
      margin-bottom:6px;
    }
    .metric-value{
      font-size:28px;
      line-height:1.15;
      font-weight:750;
      color:var(--color-primary-strong);
    }
    .metric-tip{
      color:var(--color-light);
      font-size:12px;
      margin-top:5px;
    }
    .trend-panel{
      margin-top:14px;
      padding:16px;
      border-radius:18px;
      background:#fff;
      border:1px solid var(--color-border);
      position:relative;
      z-index:1;
    }
    .trend-row{
      display:grid;
      grid-template-columns:74px 1fr 42px;
      align-items:center;
      gap:10px;
      margin:11px 0;
      color:var(--color-muted);
      font-size:13px;
    }
    .bar{
      height:8px;
      border-radius:999px;
      background:#edf3f8;
      overflow:hidden;
    }
    .bar i{
      display:block;
      height:100%;
      border-radius:inherit;
      background:linear-gradient(90deg,var(--color-primary),#75a8c4);
    }
    .section{
      padding:var(--section) 0;
    }
    .section-soft{
      background:#f5f8fb;
      border-top:1px solid rgba(220,230,239,.7);
      border-bottom:1px solid rgba(220,230,239,.7);
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:34px;
    }
    .section-kicker{
      color:var(--color-primary);
      font-size:14px;
      font-weight:750;
      margin-bottom:8px;
      letter-spacing:.04em;
    }
    .section-title{
      font-size:clamp(26px,3.5vw,40px);
      line-height:1.25;
      letter-spacing:-.03em;
      font-weight:750;
      margin-bottom:0;
      color:#172536;
    }
    .section-desc{
      max-width:440px;
      color:var(--color-muted);
      margin:0;
    }
    .matrix-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr 1fr;
      grid-auto-rows:minmax(180px,auto);
      gap:18px;
    }
    .content-card{
      background:#fff;
      border:1px solid var(--color-border);
      border-radius:var(--radius-lg);
      padding:24px;
      box-shadow:var(--shadow-sm);
      transition:var(--transition);
      position:relative;
      overflow:hidden;
    }
    .content-card:hover{
      transform:translateY(-5px);
      box-shadow:var(--shadow-md);
      border-color:#cdddea;
    }
    .content-card.large{
      grid-row:span 2;
      background:linear-gradient(180deg,#fff,#f7fbff);
    }
    .content-card.wide{
      grid-column:span 2;
    }
    .card-icon{
      width:46px;
      height:46px;
      border-radius:16px;
      display:grid;
      place-items:center;
      background:var(--color-primary-soft);
      color:var(--color-primary-strong);
      margin-bottom:16px;
      font-size:22px;
    }
    .content-card h3{
      font-size:21px;
      font-weight:720;
      line-height:1.35;
      margin-bottom:10px;
    }
    .content-card p{
      color:var(--color-muted);
      margin-bottom:18px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      border-radius:999px;
      padding:5px 10px;
      background:var(--color-accent-soft);
      color:#8a672f;
      font-size:12px;
      font-weight:700;
    }
    .card-link{
      display:inline-flex;
      align-items:center;
      gap:6px;
      color:var(--color-primary-strong);
      font-weight:700;
      font-size:14px;
      margin-top:12px;
    }
    .card-link:hover{gap:10px}
    .category-entry{
      display:grid;
      grid-template-columns:1fr 1.15fr;
      gap:22px;
      align-items:stretch;
    }
    .category-panel{
      background:#fff;
      border:1px solid var(--color-border);
      border-radius:var(--radius-lg);
      padding:30px;
      box-shadow:var(--shadow-sm);
    }
    .category-panel.highlight{
      background:linear-gradient(145deg,#ffffff 0%,#eef6fd 100%);
      position:relative;
      overflow:hidden;
    }
    .category-panel.highlight:before{
      content:"";
      position:absolute;
      right:-80px;
      bottom:-80px;
      width:240px;
      height:240px;
      border-radius:50%;
      background:rgba(59,111,159,.10);
    }
    .category-panel h3{
      font-size:26px;
      font-weight:750;
      margin-bottom:12px;
      position:relative;
    }
    .category-panel p{
      color:var(--color-muted);
      position:relative;
    }
    .feature-list{
      list-style:none;
      margin:20px 0 0;
      padding:0;
      display:grid;
      gap:12px;
      position:relative;
    }
    .feature-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:#405264;
    }
    .check{
      width:21px;
      height:21px;
      border-radius:50%;
      flex:0 0 21px;
      background:var(--color-primary-soft);
      color:var(--color-primary);
      display:grid;
      place-items:center;
      font-size:13px;
      font-weight:800;
      margin-top:4px;
    }
    .list-stack{
      display:grid;
      gap:12px;
    }
    .chapter-row{
      display:grid;
      grid-template-columns:1fr auto;
      gap:18px;
      align-items:center;
      padding:16px;
      border:1px solid var(--color-border);
      border-radius:16px;
      background:#fff;
      transition:var(--transition);
    }
    .chapter-row:hover{
      transform:translateX(4px);
      border-color:#cbdceb;
      box-shadow:var(--shadow-sm);
    }
    .chapter-row strong{
      display:block;
      font-size:16px;
      color:#1e3144;
      margin-bottom:4px;
    }
    .chapter-row span{
      color:var(--color-light);
      font-size:13px;
    }
    .rank-grid{
      display:grid;
      grid-template-columns:1fr 1.08fr .92fr;
      gap:18px;
      align-items:start;
    }
    .rank-card{
      background:#fff;
      border:1px solid var(--color-border);
      border-radius:var(--radius-lg);
      padding:22px;
      box-shadow:var(--shadow-sm);
    }
    .rank-card.featured{
      transform:translateY(-14px);
      border-color:#c7dceb;
      box-shadow:var(--shadow-md);
    }
    .rank-title{
      display:flex;
      justify-content:space-between;
      align-items:center;
      margin-bottom:18px;
    }
    .rank-title h3{
      font-size:21px;
      margin:0;
      font-weight:730;
    }
    .score{
      color:#9a722e;
      background:var(--color-accent-soft);
      border-radius:999px;
      padding:5px 9px;
      font-size:12px;
      font-weight:750;
    }
    .rank-list{
      list-style:none;
      margin:0;
      padding:0;
      display:grid;
      gap:14px;
    }
    .rank-list li{
      display:grid;
      grid-template-columns:28px 1fr;
      gap:10px;
      align-items:start;
    }
    .rank-no{
      width:28px;
      height:28px;
      display:grid;
      place-items:center;
      border-radius:10px;
      background:var(--color-primary-soft);
      color:var(--color-primary-strong);
      font-weight:750;
      font-size:13px;
    }
    .rank-list strong{
      display:block;
      font-size:15px;
      color:#23384c;
      margin-bottom:2px;
    }
    .rank-list small{
      color:var(--color-light);
      font-size:12px;
    }
    .process{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:28px;
      align-items:center;
    }
    .process-card{
      background:#fff;
      border:1px solid var(--color-border);
      border-radius:var(--radius-lg);
      padding:28px;
      box-shadow:var(--shadow-sm);
    }
    .timeline{
      list-style:none;
      margin:0;
      padding:0;
      display:grid;
      gap:16px;
    }
    .timeline li{
      display:grid;
      grid-template-columns:42px 1fr;
      gap:14px;
      align-items:start;
    }
    .time-no{
      width:42px;
      height:42px;
      border-radius:16px;
      display:grid;
      place-items:center;
      background:#eff6fb;
      border:1px solid #d8e7f2;
      color:var(--color-primary-strong);
      font-weight:780;
    }
    .timeline h3{
      font-size:18px;
      margin-bottom:4px;
      font-weight:720;
    }
    .timeline p{
      color:var(--color-muted);
      margin:0;
    }
    .reading-box{
      background:linear-gradient(145deg,#f9fcff,#fff);
      border:1px solid var(--color-border);
      border-radius:var(--radius-lg);
      padding:28px;
      min-height:330px;
      box-shadow:var(--shadow-md);
    }
    .reading-line{
      height:12px;
      border-radius:999px;
      background:#eaf1f7;
      margin:14px 0;
      overflow:hidden;
    }
    .reading-line:nth-child(2){width:92%}
    .reading-line:nth-child(3){width:78%}
    .reading-line:nth-child(4){width:86%}
    .reading-line:nth-child(5){width:62%}
    .reading-line i{
      display:block;
      height:100%;
      width:68%;
      background:linear-gradient(90deg,#cddfec,#eef6fb);
      border-radius:inherit;
    }
    .mini-note{
      margin-top:22px;
      padding:18px;
      border-radius:18px;
      background:#fff;
      border:1px solid var(--color-border);
    }
    .mini-note strong{
      display:block;
      margin-bottom:6px;
      color:#1f3348;
    }
    .mini-note span{
      color:var(--color-muted);
      font-size:14px;
    }
    .faq-wrap{
      display:grid;
      grid-template-columns:.86fr 1.14fr;
      gap:32px;
      align-items:start;
    }
    .faq-intro{
      position:sticky;
      top:116px;
    }
    .accordion{
      margin:0;
      background:transparent;
    }
    .accordion-item{
      margin-bottom:12px;
      border:1px solid var(--color-border);
      border-radius:18px;
      overflow:hidden;
      background:#fff;
      box-shadow:var(--shadow-sm);
    }
    .accordion-title{
      border:0 !important;
      color:#203449;
      font-weight:720;
      font-size:16px;
      padding:18px 52px 18px 20px;
      background:#fff;
    }
    .accordion-title:hover,.accordion-title:focus{
      background:#f7fbff;
      color:var(--color-primary-strong);
    }
    .accordion-title:before{
      right:20px;
      color:var(--color-primary);
    }
    .accordion-content{
      border:0 !important;
      padding:0 20px 20px;
      color:var(--color-muted);
      background:#fff;
      line-height:1.85;
    }
    .cta{
      padding:76px 0;
    }
    .cta-panel{
      background:linear-gradient(135deg,#eef6fd 0%,#ffffff 58%,#fff8ec 100%);
      border:1px solid #d8e6f0;
      border-radius:28px;
      padding:34px;
      box-shadow:var(--shadow-md);
      display:grid;
      grid-template-columns:.86fr 1.14fr;
      gap:28px;
      align-items:center;
    }
    .cta-panel h2{
      font-size:clamp(25px,3vw,36px);
      font-weight:760;
      line-height:1.25;
      margin-bottom:12px;
    }
    .cta-panel p{
      color:var(--color-muted);
      margin-bottom:0;
    }
    .subscribe-form{
      display:grid;
      grid-template-columns:1fr 1.1fr .95fr auto;
      gap:10px;
      align-items:center;
      background:rgba(255,255,255,.76);
      border:1px solid rgba(220,230,239,.82);
      padding:12px;
      border-radius:22px;
    }
    .subscribe-form .btn{
      min-height:48px;
    }
    .site-footer{
      background:#ffffff;
      border-top:1px solid var(--color-border);
      padding:46px 0 24px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.15fr .85fr .85fr;
      gap:34px;
      align-items:start;
      margin-bottom:28px;
    }
    .footer-brand{
      display:flex;
      gap:12px;
      align-items:center;
      margin-bottom:14px;
    }
    .footer-brand .brand-mark{
      box-shadow:none;
    }
    .footer-title{
      font-weight:760;
      font-size:18px;
    }
    .footer-text{
      color:var(--color-muted);
      max-width:430px;
      margin:0;
    }
    .footer-col h3{
      font-size:15px;
      font-weight:760;
      margin-bottom:12px;
      color:#26394d;
    }
    .footer-links{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:9px;
    }
    .footer-links a{
      color:var(--color-muted);
      font-size:14px;
    }
    .footer-links a:hover{
      color:var(--color-primary);
      padding-left:3px;
    }
    .copyright{
      border-top:1px solid var(--color-border);
      padding-top:18px;
      display:flex;
      justify-content:space-between;
      gap:18px;
      color:var(--color-light);
      font-size:13px;
      flex-wrap:wrap;
    }
    .mobile-panel{
      display:none;
      border-top:1px solid var(--color-border);
      padding:12px 0 18px;
      background:#fff;
    }
    .mobile-panel.open{display:block}
    .mobile-panel a{
      display:block;
      padding:12px 4px;
      border-bottom:1px solid #eef3f7;
      color:#405264;
      font-weight:650;
    }
    .mobile-panel a.active{color:var(--color-primary-strong)}
    @media (max-width:1024px){
      :root{--section:72px}
      .nav-links{gap:2px}
      .nav-links a{padding:8px 11px}
      .search-mini{display:none}
      .matrix-grid{grid-template-columns:1fr 1fr}
      .content-card.large,.content-card.wide{grid-column:auto;grid-row:auto}
      .category-entry,.process,.faq-wrap,.cta-panel{grid-template-columns:1fr}
      .rank-grid{grid-template-columns:1fr 1fr}
      .rank-card.featured{transform:none}
      .subscribe-form{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      .top-note .container{justify-content:center;text-align:center}
      .top-note .note-pill:last-child{display:none}
      .nav-bar{min-height:68px}
      .brand{min-width:auto}
      .brand-sub{display:none}
      .nav-links,.nav-actions .btn{display:none}
      .mobile-toggle{display:inline-grid;place-items:center}
      .hero{padding:50px 0 40px}
      .dashboard{margin-top:16px}
      .metric-grid,.matrix-grid,.rank-grid,.footer-grid{grid-template-columns:1fr}
      .section-head{display:block}
      .section-desc{margin-top:12px}
      .faq-intro{position:static}
      .subscribe-form{grid-template-columns:1fr}
      .cta-panel{padding:24px}
      .copyright{display:block}
      .copyright span{display:block;margin-top:8px}
    }
    @media (max-width:520px){
      .container{width:min(100% - 28px,var(--container))}
      h1{font-size:32px}
      .hero-actions .btn{width:100%}
      .dashboard,.content-card,.category-panel,.rank-card,.process-card,.reading-box{border-radius:18px;padding:20px}
      .chapter-row{grid-template-columns:1fr}
      .chapter-row .btn{width:100%}
      .trend-row{grid-template-columns:62px 1fr 34px}
      .section{padding:58px 0}
      .cta{padding:56px 0}
    }

/* roulang page: category1 */
:root {
      --color-primary: #2f6fba;
      --color-primary-dark: #245892;
      --color-primary-soft: #eaf3ff;
      --color-accent: #c79a42;
      --color-accent-soft: #fff6df;
      --color-bg: #f7f9fc;
      --color-bg-soft: #eef4f9;
      --color-surface: #ffffff;
      --color-text: #1f2d3d;
      --color-muted: #64748b;
      --color-light: #8a9aae;
      --color-border: #dbe5ef;
      --color-border-soft: #edf2f7;
      --shadow-sm: 0 8px 24px rgba(31, 45, 61, 0.06);
      --shadow-md: 0 16px 42px rgba(31, 45, 61, 0.10);
      --shadow-card: 0 12px 32px rgba(47, 111, 186, 0.08);
      --radius-sm: 10px;
      --radius-md: 14px;
      --radius-lg: 18px;
      --radius-xl: 24px;
      --container: 1180px;
      --section: 86px;
      --transition: 220ms ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      background: linear-gradient(180deg, #ffffff 0%, var(--color-bg) 42%, #ffffff 100%);
      color: var(--color-text);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.78;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }

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

    a:hover,
    a:focus {
      color: var(--color-primary);
    }

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

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

    button {
      cursor: pointer;
    }

    input,
    select,
    textarea {
      outline: none;
    }

    input:focus,
    select:focus,
    textarea:focus,
    button:focus-visible,
    a:focus-visible {
      outline: 3px solid rgba(47, 111, 186, 0.18);
      outline-offset: 3px;
    }

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(219, 229, 239, 0.86);
    }

    .nav-bar {
      min-height: 78px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 26px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 254px;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 15px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      flex: 0 0 42px;
      background: linear-gradient(145deg, var(--color-primary), #6aa4d8);
      color: #ffffff;
      font-weight: 700;
      box-shadow: 0 10px 26px rgba(47, 111, 186, 0.25);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.25;
    }

    .brand-title {
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--color-text);
      font-size: 16px;
    }

    .brand-sub {
      font-size: 12px;
      color: var(--color-muted);
      margin-top: 2px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
      list-style: none;
      padding: 0;
      margin: 0;
      flex: 1;
      justify-content: center;
    }

    .nav-links a,
    .mobile-panel a {
      position: relative;
      display: inline-flex;
      align-items: center;
      color: var(--color-muted);
      font-weight: 600;
      font-size: 14px;
      padding: 9px 14px;
      border-radius: 999px;
    }

    .nav-links a:hover {
      background: var(--color-primary-soft);
      color: var(--color-primary);
    }

    .nav-links a.active {
      color: var(--color-primary);
      background: #f2f7fd;
    }

    .nav-links a.active::after {
      content: "";
      position: absolute;
      left: 50%;
      bottom: 3px;
      width: 18px;
      height: 2px;
      border-radius: 999px;
      background: var(--color-primary);
      transform: translateX(-50%);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .search-mini {
      width: 170px;
      height: 40px;
      border: 1px solid var(--color-border);
      border-radius: 999px;
      padding: 0 15px;
      background: #fbfdff;
      color: var(--color-text);
      font-size: 13px;
      transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
    }

    .search-mini::placeholder {
      color: var(--color-light);
    }

    .search-mini:focus {
      border-color: rgba(47, 111, 186, 0.55);
      box-shadow: 0 0 0 4px rgba(47, 111, 186, 0.08);
      background: #ffffff;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 42px;
      padding: 10px 18px;
      border-radius: 999px;
      border: 1px solid transparent;
      font-weight: 700;
      font-size: 14px;
      line-height: 1.2;
      white-space: nowrap;
      transition: transform var(--transition), box-shadow var(--transition), color var(--transition), background var(--transition), border-color var(--transition);
    }

    .btn:hover {
      transform: translateY(-2px);
    }

    .btn-primary {
      background: var(--color-primary);
      color: #ffffff;
      box-shadow: 0 12px 24px rgba(47, 111, 186, 0.20);
    }

    .btn-primary:hover,
    .btn-primary:focus {
      color: #ffffff;
      background: var(--color-primary-dark);
      box-shadow: 0 16px 32px rgba(47, 111, 186, 0.26);
    }

    .btn-soft {
      color: var(--color-primary);
      background: var(--color-primary-soft);
      border-color: rgba(47, 111, 186, 0.10);
    }

    .btn-soft:hover {
      color: var(--color-primary-dark);
      background: #dfeeff;
      box-shadow: var(--shadow-sm);
    }

    .btn-outline {
      color: var(--color-primary);
      border-color: rgba(47, 111, 186, 0.28);
      background: #ffffff;
    }

    .btn-outline:hover {
      background: var(--color-primary-soft);
      color: var(--color-primary-dark);
      box-shadow: var(--shadow-sm);
    }

    .mobile-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border-radius: 999px;
      border: 1px solid var(--color-border);
      background: #ffffff;
      color: var(--color-text);
      font-weight: 700;
    }

    .mobile-panel {
      display: none;
      padding: 0 0 18px;
      border-top: 1px solid var(--color-border-soft);
    }

    .mobile-panel.open {
      display: grid;
      gap: 8px;
    }

    .mobile-panel a {
      justify-content: space-between;
      border: 1px solid var(--color-border-soft);
      background: #ffffff;
    }

    .mobile-panel a.active {
      color: var(--color-primary);
      background: var(--color-primary-soft);
      border-color: rgba(47, 111, 186, 0.18);
    }

    .page-hero {
      padding: 54px 0 36px;
      background:
        radial-gradient(circle at 12% 14%, rgba(47, 111, 186, 0.10), transparent 32%),
        radial-gradient(circle at 88% 8%, rgba(199, 154, 66, 0.11), transparent 28%),
        linear-gradient(180deg, #ffffff 0%, #f6f9fd 100%);
      border-bottom: 1px solid var(--color-border-soft);
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      margin: 0 0 22px;
      color: var(--color-muted);
      font-size: 14px;
    }

    .breadcrumb a {
      color: var(--color-primary);
      font-weight: 600;
    }

    .breadcrumb .split {
      color: var(--color-light);
    }

    .hero-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
      gap: 34px;
      align-items: stretch;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 16px;
      padding: 7px 12px;
      border: 1px solid rgba(47, 111, 186, 0.16);
      border-radius: 999px;
      background: rgba(234, 243, 255, 0.72);
      color: var(--color-primary);
      font-size: 13px;
      font-weight: 700;
    }

    .eyebrow::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--color-accent);
      box-shadow: 0 0 0 4px rgba(199, 154, 66, 0.15);
    }

    h1,
    h2,
    h3,
    p {
      margin-top: 0;
    }

    h1 {
      margin-bottom: 18px;
      font-size: clamp(32px, 4vw, 52px);
      line-height: 1.16;
      letter-spacing: -0.04em;
      font-weight: 700;
      color: #182536;
    }

    .hero-lead {
      max-width: 740px;
      margin-bottom: 26px;
      font-size: 18px;
      line-height: 1.9;
      color: var(--color-muted);
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 28px;
    }

    .stat-strip {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
    }

    .stat-item {
      padding: 14px 16px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      background: rgba(255, 255, 255, 0.82);
      box-shadow: var(--shadow-sm);
    }

    .stat-item strong {
      display: block;
      font-size: 21px;
      line-height: 1.2;
      color: var(--color-primary);
      letter-spacing: -0.02em;
    }

    .stat-item span {
      display: block;
      margin-top: 5px;
      font-size: 13px;
      color: var(--color-muted);
    }

    .hero-panel {
      position: relative;
      padding: 24px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-xl);
      background: rgba(255, 255, 255, 0.88);
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }

    .hero-panel::before {
      content: "";
      position: absolute;
      inset: 0 0 auto 0;
      height: 5px;
      background: linear-gradient(90deg, var(--color-primary), #84b8df, var(--color-accent));
    }

    .panel-head {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 20px;
    }

    .panel-head h2 {
      margin: 0;
      font-size: 20px;
      font-weight: 700;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 26px;
      padding: 4px 10px;
      border-radius: 999px;
      background: var(--color-accent-soft);
      color: #8a641d;
      font-size: 12px;
      font-weight: 700;
      white-space: nowrap;
    }

    .mini-board {
      display: grid;
      gap: 14px;
    }

    .board-row {
      display: grid;
      grid-template-columns: 84px 1fr auto;
      gap: 12px;
      align-items: center;
      color: var(--color-muted);
      font-size: 13px;
    }

    .bar {
      height: 8px;
      overflow: hidden;
      border-radius: 999px;
      background: #eaf0f6;
    }

    .bar span {
      display: block;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--color-primary), #8bbce0);
    }

    .board-row strong {
      color: var(--color-text);
      font-size: 14px;
    }

    main {
      overflow: hidden;
    }

    .section {
      padding: var(--section) 0;
    }

    .section-muted {
      background: linear-gradient(180deg, #f7faff 0%, #ffffff 100%);
      border-top: 1px solid var(--color-border-soft);
      border-bottom: 1px solid var(--color-border-soft);
    }

    .section-head {
      max-width: 760px;
      margin-bottom: 34px;
    }

    .section-kicker {
      margin-bottom: 10px;
      color: var(--color-primary);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: 0.08em;
    }

    .section-title {
      margin-bottom: 12px;
      font-size: clamp(25px, 3vw, 36px);
      line-height: 1.28;
      font-weight: 700;
      letter-spacing: -0.03em;
      color: #182536;
    }

    .section-desc {
      margin-bottom: 0;
      color: var(--color-muted);
      font-size: 16px;
      line-height: 1.85;
    }

    .filter-card {
      margin-top: -18px;
      padding: 18px;
      border-radius: var(--radius-xl);
      background: #ffffff;
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-card);
    }

    .filter-grid {
      display: grid;
      grid-template-columns: repeat(5, minmax(0, 1fr));
      gap: 12px;
      align-items: end;
    }

    .field label {
      display: block;
      margin-bottom: 7px;
      color: var(--color-muted);
      font-size: 13px;
      font-weight: 700;
    }

    .field select,
    .field input {
      width: 100%;
      height: 44px;
      margin: 0;
      border: 1px solid var(--color-border);
      border-radius: 12px;
      background: #fbfdff;
      color: var(--color-text);
      padding: 0 12px;
      box-shadow: none;
      font-size: 14px;
      transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
    }

    .field select:focus,
    .field input:focus {
      border-color: rgba(47, 111, 186, 0.55);
      background: #ffffff;
      box-shadow: 0 0 0 4px rgba(47, 111, 186, 0.08);
    }

    .directory-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 320px;
      gap: 26px;
      align-items: start;
    }

    .chapter-list {
      display: grid;
      gap: 16px;
    }

    .chapter-card {
      display: grid;
      grid-template-columns: 112px minmax(0, 1fr);
      gap: 18px;
      padding: 18px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      background: #ffffff;
      box-shadow: var(--shadow-sm);
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .chapter-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
      border-color: rgba(47, 111, 186, 0.24);
    }

    .chapter-index {
      min-height: 112px;
      border-radius: 16px;
      background:
        linear-gradient(145deg, rgba(47, 111, 186, 0.95), rgba(102, 157, 204, 0.95)),
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.30), transparent 40%);
      color: #ffffff;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      padding: 15px;
      overflow: hidden;
    }

    .chapter-index span {
      font-size: 12px;
      opacity: 0.82;
    }

    .chapter-index strong {
      font-size: 28px;
      line-height: 1;
      letter-spacing: -0.04em;
    }

    .chapter-body {
      min-width: 0;
    }

    .chapter-meta {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 8px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      padding: 4px 9px;
      border-radius: 999px;
      background: #f2f7fd;
      color: var(--color-primary);
      font-size: 12px;
      font-weight: 700;
    }

    .tag.muted {
      background: #f7f8fa;
      color: var(--color-muted);
    }

    .tag.gold {
      background: var(--color-accent-soft);
      color: #8a641d;
    }

    .chapter-card h2 {
      margin-bottom: 8px;
      font-size: 21px;
      line-height: 1.35;
      font-weight: 700;
      color: #182536;
    }

    .chapter-card p {
      margin-bottom: 14px;
      color: var(--color-muted);
      line-height: 1.8;
    }

    .chapter-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      padding-top: 12px;
      border-top: 1px solid var(--color-border-soft);
    }

    .chapter-data {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      color: var(--color-muted);
      font-size: 13px;
    }

    .chapter-data strong {
      color: var(--color-text);
      font-weight: 700;
    }

    .side-stack {
      display: grid;
      gap: 16px;
      position: sticky;
      top: 100px;
    }

    .side-card {
      padding: 20px;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      background: #ffffff;
      box-shadow: var(--shadow-sm);
    }

    .side-card h3 {
      margin-bottom: 12px;
      font-size: 18px;
      font-weight: 700;
      color: #182536;
    }

    .side-card p {
      margin-bottom: 0;
      color: var(--color-muted);
      font-size: 14px;
      line-height: 1.8;
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

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

    .quick-links a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 11px 12px;
      border: 1px solid var(--color-border-soft);
      border-radius: 12px;
      color: var(--color-muted);
      background: #fbfdff;
      font-size: 14px;
      font-weight: 600;
    }

    .quick-links a:hover {
      color: var(--color-primary);
      background: var(--color-primary-soft);
      border-color: rgba(47, 111, 186, 0.18);
      transform: translateX(2px);
    }

    .compare-grid {
      display: grid;
      grid-template-columns: 0.85fr 1.15fr;
      gap: 24px;
      align-items: stretch;
    }

    .compare-card,
    .process-card {
      padding: 24px;
      border-radius: var(--radius-xl);
      border: 1px solid var(--color-border);
      background: #ffffff;
      box-shadow: var(--shadow-card);
    }

    .compare-card h3,
    .process-card h3 {
      margin-bottom: 14px;
      font-size: 22px;
      font-weight: 700;
    }

    .score-list {
      display: grid;
      gap: 14px;
      margin-top: 18px;
    }

    .score-item {
      display: grid;
      gap: 8px;
    }

    .score-title {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      color: var(--color-muted);
      font-size: 14px;
    }

    .score-title strong {
      color: var(--color-text);
    }

    .process-list {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
      margin-top: 18px;
    }

    .process-step {
      padding: 18px;
      border-radius: 16px;
      border: 1px solid var(--color-border-soft);
      background: #fbfdff;
    }

    .step-num {
      width: 34px;
      height: 34px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 12px;
      border-radius: 12px;
      background: var(--color-primary-soft);
      color: var(--color-primary);
      font-weight: 800;
    }

    .process-step h4 {
      margin: 0 0 8px;
      font-size: 16px;
      font-weight: 700;
    }

    .process-step p {
      margin: 0;
      color: var(--color-muted);
      font-size: 14px;
      line-height: 1.75;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: 0.8fr 1.2fr;
      gap: 28px;
      align-items: start;
    }

    .faq-intro {
      padding: 24px;
      border-radius: var(--radius-xl);
      background: linear-gradient(145deg, #ffffff, #f4f8fd);
      border: 1px solid var(--color-border);
      box-shadow: var(--shadow-sm);
    }

    .faq-intro h2 {
      margin-bottom: 12px;
      font-size: 30px;
      line-height: 1.28;
      font-weight: 700;
    }

    .faq-intro p {
      color: var(--color-muted);
    }

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

    details.faq-item {
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      background: #ffffff;
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }

    details.faq-item summary {
      list-style: none;
      cursor: pointer;
      padding: 18px 20px;
      color: var(--color-text);
      font-weight: 700;
      display: flex;
      justify-content: space-between;
      gap: 14px;
    }

    details.faq-item summary::-webkit-details-marker {
      display: none;
    }

    details.faq-item summary::after {
      content: "+";
      color: var(--color-primary);
      font-weight: 800;
      font-size: 20px;
      line-height: 1;
    }

    details.faq-item[open] summary::after {
      content: "−";
    }

    .faq-item p {
      margin: 0;
      padding: 0 20px 18px;
      color: var(--color-muted);
      line-height: 1.8;
    }

    .subscribe-panel {
      position: relative;
      padding: 34px;
      border-radius: 28px;
      border: 1px solid rgba(47, 111, 186, 0.20);
      background:
        radial-gradient(circle at 10% 15%, rgba(47, 111, 186, 0.13), transparent 36%),
        radial-gradient(circle at 90% 70%, rgba(199, 154, 66, 0.12), transparent 34%),
        #ffffff;
      box-shadow: var(--shadow-md);
      overflow: hidden;
    }

    .subscribe-layout {
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
      gap: 28px;
      align-items: center;
    }

    .subscribe-panel h2 {
      margin-bottom: 12px;
      font-size: clamp(25px, 3vw, 36px);
      line-height: 1.3;
      font-weight: 700;
    }

    .subscribe-panel p {
      margin-bottom: 0;
      color: var(--color-muted);
    }

    .subscribe-form {
      display: grid;
      grid-template-columns: 1fr 1fr auto;
      gap: 12px;
      align-items: end;
    }

    .subscribe-form .field label {
      color: var(--color-text);
    }

    .pager {
      display: flex;
      justify-content: center;
      gap: 10px;
      margin-top: 28px;
      flex-wrap: wrap;
    }

    .pager a,
    .pager span {
      min-width: 42px;
      height: 42px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0 14px;
      border: 1px solid var(--color-border);
      border-radius: 999px;
      background: #ffffff;
      color: var(--color-muted);
      font-weight: 700;
      box-shadow: var(--shadow-sm);
    }

    .pager span {
      color: #ffffff;
      background: var(--color-primary);
      border-color: var(--color-primary);
    }

    .pager a:hover {
      color: var(--color-primary);
      border-color: rgba(47, 111, 186, 0.32);
      background: var(--color-primary-soft);
      transform: translateY(-2px);
    }

    .site-footer {
      padding: 58px 0 26px;
      background: #152131;
      color: #d9e5f2;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.7fr 0.7fr;
      gap: 44px;
      padding-bottom: 34px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.10);
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 14px;
    }

    .footer-title {
      font-size: 17px;
      font-weight: 700;
      color: #ffffff;
    }

    .footer-text {
      max-width: 520px;
      margin: 0;
      color: #aab8c8;
      line-height: 1.85;
    }

    .footer-col h3 {
      margin-bottom: 13px;
      color: #ffffff;
      font-size: 15px;
      font-weight: 700;
    }

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

    .footer-links a {
      color: #aab8c8;
      font-size: 14px;
    }

    .footer-links a:hover {
      color: #ffffff;
    }

    .copyright {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding-top: 22px;
      color: #8fa0b4;
      font-size: 13px;
      line-height: 1.7;
    }

    @media (max-width: 1024px) {
      :root {
        --section: 72px;
      }

      .container {
        width: min(100% - 32px, var(--container));
      }

      .nav-bar {
        gap: 16px;
      }

      .brand {
        min-width: 220px;
      }

      .nav-links {
        justify-content: flex-start;
      }

      .search-mini {
        display: none;
      }

      .hero-layout,
      .directory-layout,
      .compare-grid,
      .faq-grid,
      .subscribe-layout {
        grid-template-columns: 1fr;
      }

      .side-stack {
        position: static;
        grid-template-columns: repeat(3, minmax(0, 1fr));
      }

      .filter-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
      }

      .subscribe-form {
        grid-template-columns: 1fr 1fr;
      }

      .subscribe-form .btn {
        grid-column: span 2;
      }
    }

    @media (max-width: 768px) {
      .nav-links,
      .nav-actions .btn-soft {
        display: none;
      }

      .mobile-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
      }

      .brand {
        min-width: 0;
      }

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

      .brand-sub {
        display: none;
      }

      .page-hero {
        padding-top: 38px;
      }

      .stat-strip {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .filter-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

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

      .chapter-index {
        min-height: 92px;
      }

      .side-stack,
      .process-list,
      .footer-grid {
        grid-template-columns: 1fr;
      }

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

    @media (max-width: 520px) {
      .container {
        width: min(100% - 24px, var(--container));
      }

      .nav-bar {
        min-height: 68px;
      }

      .brand-mark {
        width: 38px;
        height: 38px;
        flex-basis: 38px;
        border-radius: 13px;
      }

      h1 {
        font-size: 30px;
      }

      .hero-lead {
        font-size: 16px;
      }

      .hero-actions,
      .chapter-bottom {
        align-items: stretch;
        flex-direction: column;
      }

      .hero-actions .btn,
      .chapter-bottom .btn,
      .subscribe-form .btn {
        width: 100%;
      }

      .stat-strip,
      .filter-grid,
      .subscribe-form {
        grid-template-columns: 1fr;
      }

      .subscribe-form .btn {
        grid-column: auto;
      }

      .filter-card,
      .hero-panel,
      .compare-card,
      .process-card,
      .faq-intro,
      .subscribe-panel {
        padding: 20px;
      }

      .board-row {
        grid-template-columns: 72px 1fr;
      }

      .board-row strong {
        grid-column: 2;
      }

      .section {
        padding: 58px 0;
      }
    }