/* roulang page: index */
:root{
      --jade-900:#173f38;
      --jade-800:#205249;
      --jade-700:#2e6b60;
      --jade-600:#3d8275;
      --jade-500:#5a9b8d;
      --jade-100:#e7f1ed;
      --jade-50:#f3faf7;
      --ink-900:#1f2421;
      --ink-800:#2f3732;
      --ink-700:#47514b;
      --ink-500:#69756e;
      --ink-300:#9ca9a1;
      --paper:#fbf7ee;
      --paper-deep:#f3eadc;
      --paper-soft:#fffdf8;
      --line:#e4dccd;
      --line-dark:#d3c7b5;
      --cinnabar:#a94735;
      --amber:#c69043;
      --white:#ffffff;
      --radius-sm:10px;
      --radius-md:16px;
      --radius-lg:24px;
      --shadow-soft:0 16px 45px rgba(31,36,33,.08);
      --shadow-hover:0 22px 60px rgba(31,36,33,.13);
      --container:1180px;
      --ease:all .24s ease;
    }

    *{box-sizing:border-box;}
    html{scroll-behavior:smooth;}
    body{
      margin:0;
      font-family:"Noto Serif SC","Songti SC","Microsoft YaHei",Arial,sans-serif;
      color:var(--ink-800);
      background:
        radial-gradient(circle at 16% 8%, rgba(90,155,141,.14), transparent 28%),
        linear-gradient(180deg,var(--paper) 0%,#fffaf1 46%,var(--paper-soft) 100%);
      line-height:1.78;
      letter-spacing:.01em;
      -webkit-font-smoothing:antialiased;
    }
    a{
      color:inherit;
      text-decoration:none;
      transition:var(--ease);
    }
    a:hover,a:focus{color:var(--jade-700);}
    img{max-width:100%;height:auto;display:block;}
    button,input,textarea{
      font:inherit;
    }
    button{cursor:pointer;}
    ::selection{background:rgba(61,130,117,.18);color:var(--jade-900);}

    .site-wrap{overflow:hidden;}
    .reading-container{
      width:min(calc(100% - 40px),var(--container));
      margin:0 auto;
    }
    .section{
      padding:88px 0;
      position:relative;
    }
    .section.compact{padding:64px 0;}
    .section-title{
      max-width:760px;
      margin-bottom:34px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:6px 12px;
      border:1px solid rgba(61,130,117,.24);
      background:rgba(231,241,237,.72);
      color:var(--jade-800);
      border-radius:999px;
      font-size:14px;
      font-weight:700;
      letter-spacing:.04em;
      margin-bottom:16px;
    }
    .eyebrow:before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--cinnabar);
      box-shadow:0 0 0 4px rgba(169,71,53,.10);
    }
    h1,h2,h3,h4{
      color:var(--ink-900);
      line-height:1.24;
      font-weight:800;
      margin:0;
    }
    h1{
      font-size:clamp(38px,6vw,68px);
      letter-spacing:-.03em;
    }
    h2{
      font-size:clamp(28px,3.4vw,44px);
      letter-spacing:-.02em;
    }
    h3{font-size:22px;}
    p{margin:0;color:var(--ink-700);}
    .lead{
      font-size:18px;
      color:var(--ink-700);
      max-width:720px;
    }
    .muted{color:var(--ink-500);}
    .text-small{font-size:14px;}

    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:saturate(120%) blur(12px);
      background:rgba(251,247,238,.86);
      border-bottom:1px solid rgba(211,199,181,.72);
    }
    .nav-shell{
      width:min(calc(100% - 40px),1240px);
      margin:0 auto;
      min-height:78px;
      display:grid;
      grid-template-columns:1fr auto 1fr;
      align-items:center;
      gap:22px;
    }
    .nav-left,.nav-right{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .nav-left{justify-content:flex-start;}
    .nav-right{justify-content:flex-end;}
    .nav-link{
      position:relative;
      display:inline-flex;
      align-items:center;
      min-height:42px;
      padding:8px 14px;
      border-radius:999px;
      color:var(--ink-700);
      font-size:15px;
      font-weight:700;
      white-space:nowrap;
    }
    .nav-link:hover{
      background:rgba(231,241,237,.85);
      color:var(--jade-800);
      transform:translateY(-1px);
    }
    .nav-link.active{
      color:var(--jade-900);
      background:var(--jade-100);
      box-shadow:inset 0 0 0 1px rgba(61,130,117,.16);
    }
    .brand-mark{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:12px;
      padding:8px 20px;
      min-width:290px;
      border-left:1px solid var(--line);
      border-right:1px solid var(--line);
    }
    .brand-seal{
      width:42px;
      height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:var(--jade-800);
      color:var(--paper);
      font-weight:900;
      box-shadow:0 10px 24px rgba(32,82,73,.22);
      position:relative;
    }
    .brand-seal:after{
      content:"";
      position:absolute;
      inset:5px;
      border:1px solid rgba(251,247,238,.46);
      border-radius:10px;
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.18;
    }
    .brand-name{
      color:var(--ink-900);
      font-size:17px;
      font-weight:900;
      letter-spacing:.02em;
    }
    .brand-sub{
      color:var(--ink-500);
      font-size:12px;
      margin-top:4px;
    }
    .nav-cta{
      border:1px solid rgba(169,71,53,.22);
      color:var(--cinnabar);
      background:rgba(169,71,53,.06);
    }
    .menu-toggle{
      display:none;
      width:44px;
      height:44px;
      border:1px solid var(--line);
      border-radius:12px;
      background:var(--paper-soft);
      color:var(--jade-900);
      align-items:center;
      justify-content:center;
    }
    .menu-toggle span,
    .menu-toggle span:before,
    .menu-toggle span:after{
      content:"";
      display:block;
      width:20px;
      height:2px;
      background:currentColor;
      border-radius:2px;
      transition:var(--ease);
      position:relative;
    }
    .menu-toggle span:before{position:absolute;top:-7px;}
    .menu-toggle span:after{position:absolute;top:7px;}
    .mobile-panel{
      display:none;
      border-top:1px solid var(--line);
      background:rgba(251,247,238,.98);
      padding:12px 20px 22px;
    }
    .mobile-panel.open{display:block;}
    .mobile-panel a{
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:14px 6px;
      border-bottom:1px solid rgba(211,199,181,.65);
      color:var(--ink-800);
      font-weight:800;
    }
    .mobile-panel a.active{color:var(--jade-800);}

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      padding:13px 20px;
      min-height:48px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:800;
      line-height:1;
      transition:var(--ease);
      user-select:none;
    }
    .btn-primary{
      background:var(--jade-800);
      color:var(--paper-soft);
      box-shadow:0 14px 28px rgba(32,82,73,.20);
    }
    .btn-primary:hover,.btn-primary:focus{
      color:var(--white);
      background:var(--jade-900);
      transform:translateY(-2px);
      box-shadow:0 18px 38px rgba(32,82,73,.28);
    }
    .btn-secondary{
      background:rgba(255,253,248,.82);
      color:var(--jade-900);
      border-color:var(--line-dark);
    }
    .btn-secondary:hover,.btn-secondary:focus{
      background:var(--jade-100);
      border-color:rgba(61,130,117,.35);
      transform:translateY(-2px);
    }
    .btn:active{transform:translateY(0) scale(.99);}
    .btn-block{width:100%;}

    .hero{
      padding:78px 0 62px;
    }
    .hero-panel{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(211,199,181,.84);
      border-radius:34px;
      background:
        linear-gradient(90deg,rgba(255,253,248,.94),rgba(243,250,247,.88)),
        repeating-linear-gradient(90deg,rgba(32,82,73,.04) 0 1px,transparent 1px 34px);
      box-shadow:var(--shadow-soft);
    }
    .hero-panel:before{
      content:"";
      position:absolute;
      width:420px;
      height:420px;
      right:-160px;
      top:-120px;
      border-radius:50%;
      border:1px solid rgba(61,130,117,.22);
      background:radial-gradient(circle,rgba(90,155,141,.18),transparent 64%);
    }
    .hero-content{
      position:relative;
      padding:64px 58px;
    }
    .hero-title-wrap{
      max-width:760px;
    }
    .hero-kicker{
      display:inline-flex;
      align-items:center;
      gap:10px;
      color:var(--jade-800);
      font-weight:900;
      margin-bottom:18px;
    }
    .hero-kicker .line{
      width:46px;
      height:1px;
      background:var(--jade-600);
    }
    .hero-desc{
      font-size:19px;
      max-width:690px;
      margin-top:22px;
      color:var(--ink-700);
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      margin-top:32px;
    }
    .trust-strip{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:34px;
    }
    .trust-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:9px 13px;
      background:rgba(255,253,248,.74);
      border:1px solid rgba(211,199,181,.8);
      border-radius:999px;
      color:var(--ink-700);
      font-size:14px;
      font-weight:700;
    }
    .trust-pill i{
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--amber);
    }
    .hero-visual{
      position:relative;
      min-height:450px;
      padding:36px 38px 36px 0;
      display:flex;
      align-items:center;
      justify-content:center;
    }
    .book-card{
      width:min(420px,100%);
      min-height:430px;
      border-radius:28px;
      background:var(--ink-900);
      color:var(--paper);
      box-shadow:0 30px 70px rgba(31,36,33,.26);
      padding:34px;
      position:relative;
      overflow:hidden;
    }
    .book-card:before{
      content:"";
      position:absolute;
      inset:18px;
      border:1px solid rgba(251,247,238,.16);
      border-radius:22px;
    }
    .book-card:after{
      content:"";
      position:absolute;
      width:210px;
      height:210px;
      right:-82px;
      bottom:-88px;
      background:radial-gradient(circle,rgba(90,155,141,.42),transparent 68%);
    }
    .book-top{
      position:relative;
      display:flex;
      justify-content:space-between;
      align-items:center;
      z-index:1;
    }
    .book-badge{
      border:1px solid rgba(251,247,238,.24);
      border-radius:999px;
      padding:5px 11px;
      font-size:13px;
      color:var(--paper);
    }
    .book-title{
      position:relative;
      z-index:1;
      margin-top:74px;
      color:var(--paper-soft);
      font-size:38px;
      line-height:1.18;
    }
    .book-title small{
      display:block;
      color:rgba(251,247,238,.68);
      font-size:17px;
      font-weight:600;
      margin-top:12px;
    }
    .book-lines{
      position:relative;
      z-index:1;
      margin-top:52px;
      display:grid;
      gap:12px;
    }
    .book-line{
      height:10px;
      border-radius:999px;
      background:rgba(251,247,238,.16);
      overflow:hidden;
    }
    .book-line span{
      display:block;
      height:100%;
      background:linear-gradient(90deg,var(--jade-500),rgba(251,247,238,.48));
      border-radius:999px;
    }

    .metric-board{
      margin-top:-22px;
      position:relative;
      z-index:3;
    }
    .metric-card{
      height:100%;
      padding:24px;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:rgba(255,253,248,.9);
      box-shadow:var(--shadow-soft);
      transition:var(--ease);
    }
    .metric-card:hover{
      transform:translateY(-5px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(61,130,117,.28);
    }
    .metric-meta{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-bottom:18px;
    }
    .metric-icon{
      width:42px;
      height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:var(--jade-100);
      color:var(--jade-800);
      font-weight:900;
    }
    .metric-number{
      font-size:38px;
      line-height:1;
      font-weight:900;
      color:var(--jade-900);
      letter-spacing:-.03em;
    }
    .metric-label{
      margin-top:8px;
      font-weight:800;
      color:var(--ink-900);
    }
    .progress-line{
      height:6px;
      border-radius:999px;
      background:var(--paper-deep);
      margin-top:18px;
      overflow:hidden;
    }
    .progress-line span{
      display:block;
      height:100%;
      border-radius:999px;
      background:linear-gradient(90deg,var(--jade-700),var(--amber));
    }

    .soft-bg{
      background:linear-gradient(180deg,rgba(231,241,237,.58),rgba(255,253,248,.52));
      border-top:1px solid rgba(211,199,181,.58);
      border-bottom:1px solid rgba(211,199,181,.58);
    }
    .matrix-grid{
      display:grid;
      grid-template-columns:repeat(12,1fr);
      gap:18px;
    }
    .matrix-card{
      grid-column:span 4;
      min-height:230px;
      padding:26px;
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      background:var(--paper-soft);
      box-shadow:0 10px 32px rgba(31,36,33,.06);
      transition:var(--ease);
      position:relative;
      overflow:hidden;
    }
    .matrix-card.wide{grid-column:span 6;}
    .matrix-card:after{
      content:"";
      position:absolute;
      width:120px;
      height:120px;
      right:-58px;
      top:-58px;
      border-radius:50%;
      background:rgba(90,155,141,.14);
      transition:var(--ease);
    }
    .matrix-card:hover{
      transform:translateY(-5px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(61,130,117,.30);
    }
    .matrix-card:hover:after{transform:scale(1.2);}
    .card-icon{
      width:48px;
      height:48px;
      border-radius:16px;
      display:grid;
      place-items:center;
      background:var(--jade-800);
      color:var(--paper);
      font-weight:900;
      margin-bottom:22px;
      box-shadow:0 12px 24px rgba(32,82,73,.20);
    }
    .matrix-card h3{margin-bottom:10px;}
    .action-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      margin-top:18px;
      color:var(--jade-800);
      font-weight:900;
    }
    .action-link:hover{gap:12px;color:var(--cinnabar);}

    .category-entry{
      border:1px solid rgba(211,199,181,.9);
      border-radius:30px;
      background:
        linear-gradient(135deg,rgba(255,253,248,.96),rgba(231,241,237,.74)),
        repeating-linear-gradient(0deg,rgba(31,36,33,.025) 0 1px,transparent 1px 28px);
      padding:34px;
      box-shadow:var(--shadow-soft);
    }
    .category-card{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .category-card h2{font-size:clamp(26px,3vw,38px);}
    .tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:18px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      padding:7px 12px;
      border-radius:999px;
      border:1px solid rgba(61,130,117,.22);
      background:rgba(255,253,248,.70);
      color:var(--jade-800);
      font-size:13px;
      font-weight:800;
    }

    .compare-wrap{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:22px;
      align-items:stretch;
    }
    .compare-card{
      border-radius:var(--radius-lg);
      border:1px solid var(--line);
      padding:30px;
      background:var(--paper-soft);
      box-shadow:var(--shadow-soft);
      position:relative;
    }
    .compare-card.strong{
      background:var(--jade-900);
      border-color:var(--jade-900);
      color:var(--paper);
    }
    .compare-card.strong h3,
    .compare-card.strong .score{color:var(--paper-soft);}
    .compare-card.strong p,
    .compare-card.strong li{color:rgba(251,247,238,.78);}
    .score{
      font-size:48px;
      line-height:1;
      color:var(--cinnabar);
      font-weight:900;
      margin:16px 0;
    }
    .compare-list{
      list-style:none;
      margin:22px 0 0;
      padding:0;
      display:grid;
      gap:14px;
    }
    .compare-list li{
      position:relative;
      padding-left:26px;
      color:var(--ink-700);
    }
    .compare-list li:before{
      content:"";
      position:absolute;
      left:0;
      top:.7em;
      width:10px;
      height:10px;
      border-radius:50%;
      background:var(--amber);
    }
    .compare-card.strong .compare-list li:before{background:var(--jade-500);}

    .process-line{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
    }
    .step{
      padding:22px;
      border-radius:var(--radius-md);
      background:rgba(255,253,248,.86);
      border:1px solid var(--line);
    }
    .step-no{
      width:34px;
      height:34px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:var(--jade-800);
      color:var(--paper);
      font-weight:900;
      margin-bottom:14px;
    }
    .step h3{font-size:18px;margin-bottom:8px;}

    .faq-list{
      border:1px solid var(--line);
      border-radius:var(--radius-lg);
      overflow:hidden;
      background:var(--paper-soft);
      box-shadow:var(--shadow-soft);
    }
    .faq-item + .faq-item{border-top:1px solid var(--line);}
    .faq-question{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      padding:22px 24px;
      border:0;
      background:transparent;
      color:var(--ink-900);
      font-weight:900;
      text-align:left;
      transition:var(--ease);
    }
    .faq-question:hover{
      background:rgba(231,241,237,.54);
      color:var(--jade-900);
    }
    .faq-question:focus-visible,
    .btn:focus-visible,
    input:focus-visible,
    textarea:focus-visible,
    .nav-link:focus-visible{
      outline:3px solid rgba(198,144,67,.34);
      outline-offset:3px;
    }
    .faq-symbol{
      width:28px;
      height:28px;
      border-radius:50%;
      display:grid;
      place-items:center;
      border:1px solid rgba(61,130,117,.28);
      color:var(--jade-800);
      flex:0 0 auto;
      transition:var(--ease);
    }
    .faq-answer{
      display:none;
      padding:0 24px 24px;
      color:var(--ink-700);
      font-size:15px;
    }
    .faq-item.open .faq-answer{display:block;}
    .faq-item.open .faq-symbol{
      transform:rotate(45deg);
      background:var(--jade-800);
      color:var(--paper);
    }

    .cta-panel{
      border-radius:34px;
      overflow:hidden;
      background:var(--ink-900);
      color:var(--paper);
      box-shadow:0 26px 80px rgba(31,36,33,.22);
      position:relative;
    }
    .cta-panel:before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 12% 18%,rgba(90,155,141,.32),transparent 28%),
        radial-gradient(circle at 88% 78%,rgba(198,144,67,.24),transparent 30%);
      pointer-events:none;
    }
    .cta-inner{
      position:relative;
      padding:46px;
    }
    .cta-panel h2{color:var(--paper-soft);}
    .cta-panel p{color:rgba(251,247,238,.76);}
    .contact-form{
      padding:28px;
      border-radius:var(--radius-lg);
      background:rgba(251,247,238,.96);
      border:1px solid rgba(251,247,238,.26);
    }
    .form-label{
      display:block;
      margin-bottom:8px;
      color:var(--ink-900);
      font-weight:900;
      font-size:14px;
    }
    .form-control{
      width:100%;
      min-height:48px;
      border-radius:14px;
      border:1px solid var(--line-dark);
      background:var(--paper-soft);
      color:var(--ink-900);
      padding:12px 14px;
      box-shadow:none;
      transition:var(--ease);
      margin-bottom:16px;
    }
    textarea.form-control{
      min-height:108px;
      resize:vertical;
    }
    .form-control:focus{
      border-color:var(--jade-600);
      box-shadow:0 0 0 4px rgba(61,130,117,.12);
      outline:0;
      background:#fff;
    }
    .form-note{
      color:var(--ink-500);
      font-size:13px;
      margin-top:12px;
    }

    .site-footer{
      padding:54px 0 30px;
      background:#f0eadf;
      border-top:1px solid var(--line-dark);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.4fr .8fr .8fr;
      gap:34px;
      align-items:start;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      margin-bottom:14px;
    }
    .footer-title{
      color:var(--ink-900);
      font-weight:900;
      font-size:18px;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:var(--ink-700);
      font-weight:700;
    }
    .footer-links a:hover{
      color:var(--jade-800);
      transform:translateX(3px);
    }
    .footer-heading{
      color:var(--ink-900);
      font-weight:900;
      margin-bottom:12px;
    }
    .copyright{
      margin-top:34px;
      padding-top:20px;
      border-top:1px solid rgba(211,199,181,.9);
      display:flex;
      flex-wrap:wrap;
      justify-content:space-between;
      gap:12px;
      color:var(--ink-500);
      font-size:13px;
    }

    @media (max-width:1024px){
      .nav-shell{
        grid-template-columns:auto 1fr auto;
        min-height:70px;
      }
      .nav-left,.nav-right{display:none;}
      .brand-mark{
        justify-content:flex-start;
        min-width:auto;
        border:0;
        padding:6px 0;
      }
      .menu-toggle{display:flex;}
      .hero-content{padding:46px 34px;}
      .hero-visual{
        min-height:auto;
        padding:0 34px 42px;
      }
      .book-card{min-height:360px;}
      .matrix-card,.matrix-card.wide{grid-column:span 6;}
      .process-line{grid-template-columns:repeat(2,1fr);}
    }

    @media (max-width:768px){
      .reading-container{width:min(calc(100% - 28px),var(--container));}
      .section{padding:64px 0;}
      .hero{padding:42px 0 40px;}
      .hero-panel{border-radius:24px;}
      .hero-content{padding:34px 22px;}
      .hero-desc{font-size:16px;}
      .hero-actions .btn{width:100%;}
      .trust-strip{gap:8px;}
      .trust-pill{font-size:13px;}
      .book-card{
        min-height:320px;
        padding:26px;
        border-radius:22px;
      }
      .book-title{font-size:30px;margin-top:54px;}
      .metric-card,.matrix-card{border-radius:18px;}
      .matrix-grid{display:block;}
      .matrix-card,.matrix-card.wide{margin-bottom:16px;}
      .category-card{
        display:block;
      }
      .category-card .btn{
        width:100%;
        margin-top:22px;
      }
      .compare-wrap{grid-template-columns:1fr;}
      .process-line{grid-template-columns:1fr;}
      .cta-inner{padding:30px 20px;}
      .contact-form{padding:20px;}
      .footer-grid{grid-template-columns:1fr;}
      .copyright{display:block;}
      .brand-name{font-size:15px;}
      .brand-sub{display:none;}
    }

    @media (max-width:520px){
      .nav-shell{width:min(calc(100% - 24px),1240px);}
      .brand-seal{
        width:38px;
        height:38px;
        border-radius:13px;
      }
      h1{font-size:36px;}
      h2{font-size:28px;}
      .hero-content{padding:30px 18px;}
      .hero-visual{padding:0 18px 26px;}
      .section-title{margin-bottom:24px;}
      .metric-number{font-size:32px;}
      .faq-question{padding:18px;}
      .faq-answer{padding:0 18px 20px;}
    }

/* roulang page: category1 */
:root {
      --color-jade: #2f7d68;
      --color-jade-dark: #1f5d4f;
      --color-jade-soft: #e7f1ed;
      --color-ink: #1f2724;
      --color-charcoal: #39443f;
      --color-muted: #6d7771;
      --color-paper: #f8f4ea;
      --color-paper-deep: #f0eadc;
      --color-white: #fffdf8;
      --color-cinnabar: #b95b45;
      --color-amber: #c9914b;
      --color-line: rgba(45, 69, 61, .15);
      --shadow-soft: 0 16px 38px rgba(36, 52, 47, .09);
      --shadow-hover: 0 22px 48px rgba(36, 52, 47, .14);
      --radius-sm: 10px;
      --radius-md: 18px;
      --radius-lg: 28px;
      --container: 1180px;
      --font-main: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
      --font-serif: "Noto Serif SC", "Songti SC", "STSong", serif;
      --ease: .24s ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: var(--font-main);
      color: var(--color-ink);
      line-height: 1.78;
      background:
        radial-gradient(circle at 12% 8%, rgba(47, 125, 104, .11), transparent 28%),
        radial-gradient(circle at 92% 18%, rgba(185, 91, 69, .08), transparent 25%),
        linear-gradient(180deg, var(--color-paper) 0%, #fbf8f1 42%, #f7f1e5 100%);
      overflow-x: hidden;
    }

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

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

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

    button {
      cursor: pointer;
      border: none;
    }

    ::selection {
      background: rgba(47, 125, 104, .22);
      color: var(--color-ink);
    }

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

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(248, 244, 234, .92);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--color-line);
    }

    .nav-shell {
      width: min(calc(100% - 40px), var(--container));
      min-height: 78px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      align-items: center;
      gap: 24px;
    }

    .nav-left,
    .nav-right {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .nav-right {
      justify-content: flex-end;
    }

    .nav-link {
      position: relative;
      display: inline-flex;
      align-items: center;
      min-height: 40px;
      padding: 8px 14px;
      border-radius: 999px;
      color: var(--color-charcoal);
      font-size: 15px;
      font-weight: 650;
      letter-spacing: .02em;
    }

    .nav-link:hover,
    .nav-link:focus {
      color: var(--color-jade-dark);
      background: rgba(47, 125, 104, .08);
      outline: none;
    }

    .nav-link.active {
      color: var(--color-jade-dark);
      background: var(--color-jade-soft);
      box-shadow: inset 0 0 0 1px rgba(47, 125, 104, .14);
    }

    .nav-link.active::after {
      content: "";
      position: absolute;
      left: 18px;
      right: 18px;
      bottom: 5px;
      height: 2px;
      border-radius: 99px;
      background: var(--color-jade);
    }

    .nav-cta {
      background: var(--color-ink);
      color: var(--color-white);
      box-shadow: 0 10px 22px rgba(31, 39, 36, .16);
    }

    .nav-cta:hover,
    .nav-cta:focus {
      background: var(--color-jade-dark);
      color: var(--color-white);
      transform: translateY(-1px);
    }

    .brand-mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 12px;
      padding: 8px 18px;
      min-width: 340px;
      border-left: 1px solid var(--color-line);
      border-right: 1px solid var(--color-line);
    }

    .brand-seal {
      width: 42px;
      height: 42px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      flex: 0 0 auto;
      border-radius: 14px;
      background: var(--color-jade);
      color: var(--color-white);
      font-family: var(--font-serif);
      font-size: 21px;
      font-weight: 800;
      box-shadow: 0 12px 28px rgba(47, 125, 104, .22);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.18;
      text-align: left;
    }

    .brand-name {
      font-weight: 800;
      font-size: 17px;
      color: var(--color-ink);
      letter-spacing: .01em;
    }

    .brand-sub {
      margin-top: 4px;
      font-size: 12px;
      color: var(--color-muted);
    }

    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 14px;
      background: var(--color-white);
      border: 1px solid var(--color-line);
      justify-self: end;
      position: relative;
    }

    .menu-toggle span,
    .menu-toggle span::before,
    .menu-toggle span::after {
      content: "";
      position: absolute;
      width: 18px;
      height: 2px;
      left: 12px;
      background: var(--color-ink);
      border-radius: 99px;
      transition: transform var(--ease), opacity var(--ease), top var(--ease);
    }

    .menu-toggle span {
      top: 21px;
    }

    .menu-toggle span::before {
      left: 0;
      top: -7px;
    }

    .menu-toggle span::after {
      left: 0;
      top: 7px;
    }

    .menu-toggle.is-open span {
      background: transparent;
    }

    .menu-toggle.is-open span::before {
      top: 0;
      transform: rotate(45deg);
    }

    .menu-toggle.is-open span::after {
      top: 0;
      transform: rotate(-45deg);
    }

    .mobile-panel {
      display: none;
      width: min(calc(100% - 40px), var(--container));
      margin: 0 auto 14px;
      padding: 10px;
      border: 1px solid var(--color-line);
      border-radius: 18px;
      background: rgba(255, 253, 248, .96);
      box-shadow: var(--shadow-soft);
    }

    .mobile-panel a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 13px 14px;
      border-radius: 12px;
      color: var(--color-charcoal);
      font-weight: 700;
    }

    .mobile-panel a span {
      font-size: 12px;
      color: var(--color-muted);
      font-weight: 600;
    }

    .mobile-panel a:hover,
    .mobile-panel a.active {
      background: var(--color-jade-soft);
      color: var(--color-jade-dark);
    }

    .section {
      padding: 84px 0;
    }

    .section-tight {
      padding: 56px 0;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border: 1px solid rgba(47, 125, 104, .18);
      border-radius: 999px;
      background: rgba(231, 241, 237, .75);
      color: var(--color-jade-dark);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .04em;
    }

    .eyebrow::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--color-cinnabar);
      box-shadow: 0 0 0 4px rgba(185, 91, 69, .12);
    }

    .section-title {
      margin: 14px 0 10px;
      color: var(--color-ink);
      font-family: var(--font-serif);
      font-size: clamp(28px, 4vw, 44px);
      line-height: 1.22;
      letter-spacing: -.02em;
    }

    .section-lead {
      max-width: 760px;
      margin: 0;
      color: var(--color-muted);
      font-size: 17px;
    }

    .btn-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 46px;
      padding: 12px 18px;
      border-radius: 999px;
      font-weight: 800;
      line-height: 1;
      border: 1px solid transparent;
      transition: transform var(--ease), box-shadow var(--ease), background-color var(--ease), color var(--ease), border-color var(--ease);
    }

    .btn-primary {
      background: var(--color-jade);
      color: var(--color-white);
      box-shadow: 0 14px 30px rgba(47, 125, 104, .22);
    }

    .btn-primary:hover,
    .btn-primary:focus {
      background: var(--color-jade-dark);
      color: var(--color-white);
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
      outline: none;
    }

    .btn-secondary {
      background: var(--color-white);
      color: var(--color-ink);
      border-color: var(--color-line);
    }

    .btn-secondary:hover,
    .btn-secondary:focus {
      color: var(--color-jade-dark);
      border-color: rgba(47, 125, 104, .34);
      background: var(--color-jade-soft);
      transform: translateY(-2px);
      outline: none;
    }

    .category-hero {
      padding: 56px 0 44px;
      border-bottom: 1px solid var(--color-line);
      background:
        linear-gradient(90deg, rgba(255, 253, 248, .82), rgba(231, 241, 237, .54)),
        repeating-linear-gradient(90deg, rgba(31, 39, 36, .035) 0, rgba(31, 39, 36, .035) 1px, transparent 1px, transparent 72px);
    }

    .breadcrumb-line {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      margin-bottom: 26px;
      font-size: 14px;
      color: var(--color-muted);
    }

    .breadcrumb-line a {
      color: var(--color-jade-dark);
      font-weight: 700;
    }

    .breadcrumb-line a:hover {
      color: var(--color-cinnabar);
    }

    .hero-panel {
      position: relative;
      padding: clamp(26px, 4vw, 46px);
      border: 1px solid var(--color-line);
      border-radius: var(--radius-lg);
      background: rgba(255, 253, 248, .78);
      box-shadow: var(--shadow-soft);
      overflow: hidden;
    }

    .hero-panel::after {
      content: "";
      position: absolute;
      right: -70px;
      top: -80px;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(47, 125, 104, .16), transparent 68%);
      pointer-events: none;
    }

    .page-h1 {
      margin: 12px 0 16px;
      max-width: 780px;
      font-family: var(--font-serif);
      font-size: clamp(34px, 5vw, 60px);
      line-height: 1.13;
      letter-spacing: -.035em;
      color: var(--color-ink);
    }

    .hero-desc {
      max-width: 760px;
      margin: 0 0 24px;
      color: var(--color-charcoal);
      font-size: 18px;
    }

    .summary-row {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
      margin-top: 30px;
    }

    .summary-card {
      padding: 16px;
      border: 1px solid var(--color-line);
      border-radius: var(--radius-md);
      background: rgba(248, 244, 234, .78);
    }

    .summary-card strong {
      display: block;
      margin-bottom: 2px;
      color: var(--color-jade-dark);
      font-size: 24px;
      line-height: 1.1;
      font-family: var(--font-serif);
    }

    .summary-card span {
      color: var(--color-muted);
      font-size: 13px;
      font-weight: 650;
    }

    .filter-strip {
      margin-top: 24px;
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
    }

    .filter-label {
      color: var(--color-muted);
      font-size: 14px;
      font-weight: 700;
    }

    .filter-chip {
      padding: 9px 13px;
      border-radius: 999px;
      border: 1px solid var(--color-line);
      background: var(--color-white);
      color: var(--color-charcoal);
      font-size: 14px;
      font-weight: 750;
      transition: transform var(--ease), background-color var(--ease), color var(--ease), border-color var(--ease);
    }

    .filter-chip:hover,
    .filter-chip:focus,
    .filter-chip.active {
      background: var(--color-jade);
      color: var(--color-white);
      border-color: var(--color-jade);
      transform: translateY(-1px);
      outline: none;
    }

    .content-layout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 322px;
      gap: 28px;
      align-items: start;
    }

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

    .guide-card {
      position: relative;
      display: grid;
      grid-template-columns: 86px minmax(0, 1fr);
      gap: 18px;
      padding: 22px;
      border-radius: var(--radius-md);
      border: 1px solid var(--color-line);
      background: rgba(255, 253, 248, .86);
      box-shadow: 0 10px 28px rgba(36, 52, 47, .055);
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
      overflow: hidden;
    }

    .guide-card::before {
      content: "";
      position: absolute;
      inset: 0 auto 0 0;
      width: 4px;
      background: var(--color-jade);
      opacity: .78;
    }

    .guide-card:hover {
      transform: translateY(-3px);
      border-color: rgba(47, 125, 104, .28);
      box-shadow: var(--shadow-hover);
    }

    .guide-index {
      width: 76px;
      height: 76px;
      border-radius: 22px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      background:
        linear-gradient(180deg, rgba(47, 125, 104, .12), rgba(47, 125, 104, .04)),
        var(--color-paper);
      border: 1px solid rgba(47, 125, 104, .16);
      color: var(--color-jade-dark);
    }

    .guide-index b {
      font-family: var(--font-serif);
      font-size: 26px;
      line-height: 1;
    }

    .guide-index span {
      margin-top: 4px;
      font-size: 12px;
      font-weight: 750;
      color: var(--color-muted);
    }

    .guide-card h2 {
      margin: 0 0 8px;
      font-size: 22px;
      line-height: 1.35;
      color: var(--color-ink);
      font-family: var(--font-serif);
    }

    .guide-card p {
      margin: 0;
      color: var(--color-muted);
      font-size: 15.5px;
    }

    .meta-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 14px;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      padding: 5px 9px;
      border-radius: 999px;
      background: var(--color-jade-soft);
      color: var(--color-jade-dark);
      font-size: 12px;
      font-weight: 800;
    }

    .tag.warm {
      background: rgba(185, 91, 69, .1);
      color: #934631;
    }

    .guide-action {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      margin-top: 16px;
      color: var(--color-jade-dark);
      font-weight: 850;
      font-size: 14px;
    }

    .guide-action:hover {
      color: var(--color-cinnabar);
      transform: translateX(3px);
    }

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

    .side-card {
      padding: 22px;
      border: 1px solid var(--color-line);
      border-radius: var(--radius-md);
      background: rgba(255, 253, 248, .82);
      box-shadow: 0 10px 26px rgba(36, 52, 47, .055);
    }

    .side-card h3 {
      margin: 0 0 12px;
      font-family: var(--font-serif);
      font-size: 21px;
      color: var(--color-ink);
    }

    .side-card p {
      margin: 0 0 14px;
      color: var(--color-muted);
      font-size: 14.5px;
    }

    .side-link-list {
      display: grid;
      gap: 8px;
    }

    .side-link {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 11px 12px;
      border-radius: 12px;
      background: rgba(240, 234, 220, .55);
      color: var(--color-charcoal);
      font-weight: 750;
      font-size: 14px;
    }

    .side-link span {
      color: var(--color-muted);
      font-size: 12px;
      font-weight: 700;
    }

    .side-link:hover {
      background: var(--color-jade-soft);
      color: var(--color-jade-dark);
      transform: translateX(2px);
    }

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

    .cloud-tag {
      padding: 7px 10px;
      border-radius: 999px;
      border: 1px solid var(--color-line);
      color: var(--color-muted);
      font-size: 13px;
      font-weight: 750;
      background: rgba(255, 253, 248, .78);
    }

    .cloud-tag:hover {
      border-color: rgba(47, 125, 104, .32);
      color: var(--color-jade-dark);
      background: var(--color-jade-soft);
    }

    .path-section {
      background:
        linear-gradient(180deg, rgba(47, 125, 104, .08), rgba(255, 253, 248, .35)),
        var(--color-paper-deep);
      border-top: 1px solid var(--color-line);
      border-bottom: 1px solid var(--color-line);
    }

    .path-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
      margin-top: 28px;
    }

    .path-card {
      position: relative;
      padding: 22px 18px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(47, 125, 104, .16);
      background: rgba(255, 253, 248, .72);
      min-height: 178px;
    }

    .path-card::after {
      content: "";
      position: absolute;
      top: 28px;
      right: -12px;
      width: 24px;
      height: 1px;
      background: rgba(47, 125, 104, .3);
    }

    .path-card:last-child::after {
      display: none;
    }

    .path-number {
      width: 34px;
      height: 34px;
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--color-ink);
      color: var(--color-white);
      font-weight: 850;
      margin-bottom: 16px;
    }

    .path-card h3 {
      margin: 0 0 8px;
      font-size: 18px;
      color: var(--color-ink);
    }

    .path-card p {
      margin: 0;
      color: var(--color-muted);
      font-size: 14.5px;
    }

    .quality-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
      margin-top: 28px;
    }

    .quality-card {
      padding: 26px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--color-line);
      background: rgba(255, 253, 248, .82);
      box-shadow: var(--shadow-soft);
    }

    .quality-card.dark {
      background: #202a26;
      color: var(--color-white);
      border-color: rgba(255, 255, 255, .08);
    }

    .quality-card h3 {
      margin: 0 0 14px;
      font-family: var(--font-serif);
      font-size: 25px;
    }

    .quality-card.dark p,
    .quality-card.dark li {
      color: rgba(255, 253, 248, .76);
    }

    .quality-card p {
      margin: 0 0 14px;
      color: var(--color-muted);
    }

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

    .check-list li {
      display: grid;
      grid-template-columns: 22px minmax(0, 1fr);
      gap: 8px;
      color: var(--color-charcoal);
      font-size: 15px;
    }

    .check-list li::before {
      content: "✓";
      width: 22px;
      height: 22px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--color-jade-soft);
      color: var(--color-jade-dark);
      font-size: 13px;
      font-weight: 900;
      line-height: 1;
      margin-top: 2px;
    }

    .quality-card.dark .check-list li::before {
      background: rgba(255, 253, 248, .12);
      color: #b9e2d4;
    }

    .faq-wrap {
      margin-top: 28px;
      display: grid;
      gap: 12px;
    }

    .faq-item {
      border: 1px solid var(--color-line);
      border-radius: var(--radius-md);
      background: rgba(255, 253, 248, .86);
      overflow: hidden;
    }

    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      padding: 18px 20px;
      background: transparent;
      color: var(--color-ink);
      text-align: left;
      font-weight: 850;
    }

    .faq-question:hover,
    .faq-question:focus {
      color: var(--color-jade-dark);
      outline: none;
    }

    .faq-icon {
      width: 26px;
      height: 26px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--color-jade-soft);
      color: var(--color-jade-dark);
      flex: 0 0 auto;
      transition: transform var(--ease);
    }

    .faq-item.is-open .faq-icon {
      transform: rotate(45deg);
      background: var(--color-jade);
      color: var(--color-white);
    }

    .faq-answer {
      display: none;
      padding: 0 20px 20px;
      color: var(--color-muted);
      font-size: 15px;
    }

    .faq-item.is-open .faq-answer {
      display: block;
    }

    .cta-panel {
      position: relative;
      overflow: hidden;
      padding: clamp(28px, 5vw, 46px);
      border-radius: var(--radius-lg);
      background:
        linear-gradient(135deg, rgba(31, 39, 36, .96), rgba(31, 93, 79, .94)),
        #202a26;
      color: var(--color-white);
      box-shadow: var(--shadow-soft);
    }

    .cta-panel::after {
      content: "";
      position: absolute;
      right: -50px;
      bottom: -80px;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      border: 1px solid rgba(255, 253, 248, .14);
      background: radial-gradient(circle, rgba(255, 253, 248, .12), transparent 68%);
    }

    .cta-panel h2 {
      position: relative;
      z-index: 1;
      margin: 0 0 12px;
      max-width: 720px;
      font-family: var(--font-serif);
      font-size: clamp(28px, 4vw, 42px);
      line-height: 1.25;
    }

    .cta-panel p {
      position: relative;
      z-index: 1;
      max-width: 760px;
      margin: 0 0 22px;
      color: rgba(255, 253, 248, .78);
    }

    .contact-form {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
      margin-top: 22px;
    }

    .form-field {
      display: grid;
      gap: 7px;
    }

    .form-field.full {
      grid-column: 1 / -1;
    }

    .form-field label {
      color: rgba(255, 253, 248, .86);
      font-size: 14px;
      font-weight: 800;
    }

    .form-field input,
    .form-field textarea {
      width: 100%;
      border-radius: 14px;
      border: 1px solid rgba(255, 253, 248, .18);
      background: rgba(255, 253, 248, .08);
      color: var(--color-white);
      padding: 13px 14px;
      outline: none;
      transition: border-color var(--ease), box-shadow var(--ease), background-color var(--ease);
    }

    .form-field input::placeholder,
    .form-field textarea::placeholder {
      color: rgba(255, 253, 248, .46);
    }

    .form-field input:focus,
    .form-field textarea:focus {
      border-color: rgba(185, 226, 212, .78);
      box-shadow: 0 0 0 4px rgba(185, 226, 212, .12);
      background: rgba(255, 253, 248, .12);
    }

    .submit-row {
      grid-column: 1 / -1;
      display: flex;
      align-items: center;
      gap: 14px;
      flex-wrap: wrap;
      margin-top: 4px;
    }

    .btn-submit {
      background: var(--color-cinnabar);
      color: var(--color-white);
      box-shadow: 0 16px 28px rgba(185, 91, 69, .28);
    }

    .btn-submit:hover,
    .btn-submit:focus {
      background: #a64d3a;
      transform: translateY(-2px);
      color: var(--color-white);
      outline: none;
    }

    .form-note {
      color: rgba(255, 253, 248, .65);
      font-size: 13px;
    }

    .muted {
      color: var(--color-muted);
    }

    .text-small {
      font-size: 14px;
      line-height: 1.72;
    }

    .site-footer {
      padding: 56px 0 24px;
      border-top: 1px solid var(--color-line);
      background: rgba(240, 234, 220, .74);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.3fr .75fr .75fr;
      gap: 34px;
      align-items: start;
    }

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

    .footer-title {
      color: var(--color-ink);
      font-weight: 850;
      font-size: 18px;
      margin-bottom: 4px;
    }

    .footer-heading {
      color: var(--color-ink);
      font-weight: 850;
      margin-bottom: 12px;
    }

    .footer-links {
      display: grid;
      gap: 9px;
    }

    .footer-links a {
      color: var(--color-muted);
      font-size: 14px;
      font-weight: 650;
    }

    .footer-links a:hover {
      color: var(--color-jade-dark);
      transform: translateX(2px);
    }

    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      margin-top: 36px;
      padding-top: 18px;
      border-top: 1px solid var(--color-line);
      color: var(--color-muted);
      font-size: 13px;
    }

    @media screen and (max-width: 1024px) {
      .nav-shell {
        grid-template-columns: 1fr auto;
        min-height: 72px;
      }

      .nav-left,
      .nav-right {
        display: none;
      }

      .brand-mark {
        justify-self: start;
        min-width: auto;
        padding-left: 0;
        border: none;
      }

      .menu-toggle {
        display: inline-flex;
      }

      .mobile-panel.is-open {
        display: grid;
      }

      .content-layout {
        grid-template-columns: 1fr;
      }

      .side-stack {
        position: static;
        grid-template-columns: 1fr 1fr;
      }

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

    @media screen and (max-width: 768px) {
      .reading-container,
      .nav-shell,
      .mobile-panel {
        width: min(calc(100% - 28px), var(--container));
      }

      .section {
        padding: 62px 0;
      }

      .category-hero {
        padding: 38px 0 34px;
      }

      .hero-panel {
        padding: 24px;
      }

      .page-h1 {
        font-size: clamp(32px, 10vw, 46px);
      }

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

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

      .guide-index {
        width: 68px;
        height: 68px;
      }

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

      .path-card::after {
        display: none;
      }

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

      .copyright {
        flex-direction: column;
      }
    }

    @media screen and (max-width: 520px) {
      .brand-seal {
        width: 38px;
        height: 38px;
        border-radius: 12px;
        font-size: 19px;
      }

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

      .brand-sub {
        display: none;
      }

      .summary-row,
      .path-grid {
        grid-template-columns: 1fr;
      }

      .btn-row,
      .submit-row {
        align-items: stretch;
        flex-direction: column;
      }

      .btn {
        width: 100%;
      }

      .filter-strip {
        align-items: stretch;
      }

      .filter-label {
        width: 100%;
      }

      .filter-chip {
        flex: 1 1 auto;
      }

      .guide-card {
        padding: 19px;
      }

      .side-card,
      .quality-card {
        padding: 21px;
      }
    }