/* roulang page: index */
:root{
      --bg: #f4f8fc;
      --bg-soft: #f8fbff;
      --panel: #ffffff;
      --panel-2: #f7fbff;
      --brand: #2f6fa9;
      --brand-strong: #1e5688;
      --brand-soft: rgba(47,111,169,.10);
      --accent: #5f8fbe;
      --accent-soft: rgba(95,143,190,.14);
      --text: #17324f;
      --muted: #5f748a;
      --line: #dbe6f1;
      --line-2: #e8eff6;
      --shadow: 0 10px 30px rgba(17, 40, 66, .08);
      --shadow-lg: 0 18px 42px rgba(17, 40, 66, .12);
      --radius: 18px;
      --radius-lg: 24px;
      --radius-sm: 14px;
      --container: 1200px;
      --space: 84px;
      --space-sm: 54px;
      --transition: 220ms ease;
    }

    *{ box-sizing:border-box; }
    html{ scroll-behavior:smooth; }
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",system-ui,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(95,143,190,.10), transparent 28%),
        radial-gradient(circle at top right, rgba(47,111,169,.08), transparent 20%),
        linear-gradient(180deg, #f9fcff 0%, #f4f8fc 46%, #f6f9fc 100%);
      line-height:1.75;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
    }

    a{ color:inherit; text-decoration:none; }
    a:hover{ color:var(--brand); }
    img{ max-width:100%; display:block; }
    button, input, textarea, select{ font:inherit; }
    ::selection{ background:rgba(47,111,169,.18); color:var(--text); }

    .container-wide{
      width:min(var(--container), calc(100% - 32px));
      margin-inline:auto;
    }

    .section{
      padding: var(--space) 0;
      position:relative;
    }
    .section.compact{
      padding: var(--space-sm) 0;
    }
    .section.soft{
      background: linear-gradient(180deg, rgba(255,255,255,.45), rgba(255,255,255,.82));
      border-top:1px solid rgba(219,230,241,.7);
      border-bottom:1px solid rgba(219,230,241,.7);
    }

    .section-head{
      margin-bottom: 28px;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:.5rem;
      padding:.42rem .8rem;
      border-radius:999px;
      background:var(--brand-soft);
      color:var(--brand-strong);
      border:1px solid rgba(47,111,169,.12);
      font-size:.9rem;
      font-weight:600;
      letter-spacing:.02em;
    }
    .section-title{
      margin:14px 0 10px;
      font-size: clamp(1.65rem, 2.2vw, 2.45rem);
      line-height:1.2;
      font-weight:800;
      color:var(--text);
    }
    .section-lead{
      color:var(--muted);
      max-width: 740px;
      margin: 0;
      font-size: 1rem;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:1030;
      backdrop-filter: blur(12px);
      background: rgba(248, 251, 255, .82);
      border-bottom:1px solid rgba(219,230,241,.75);
      box-shadow: 0 8px 24px rgba(17, 40, 66, .04);
    }
    .navbar{
      padding: .85rem 0;
    }
    .navbar-brand{
      display:inline-flex;
      align-items:center;
      gap:.7rem;
      font-weight:800;
      letter-spacing:.02em;
      color:var(--text) !important;
    }
    .brand-mark{
      width:38px;
      height:38px;
      border-radius:14px;
      background:
        radial-gradient(circle at 30% 30%, #d7e8f8 0, #aecded 30%, #5f8fbe 100%);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.65), 0 10px 18px rgba(47,111,169,.18);
      display:grid;
      place-items:center;
      color:#fff;
      font-size:1rem;
      font-weight:800;
    }
    .navbar-nav{
      gap:.35rem;
    }
    .nav-link{
      color:var(--muted) !important;
      padding:.56rem .95rem !important;
      border-radius:999px;
      transition: all var(--transition);
      font-weight:600;
      font-size:.96rem;
    }
    .nav-link:hover,
    .nav-link:focus{
      color:var(--brand-strong) !important;
      background:rgba(95,143,190,.08);
    }
    .nav-link.active{
      color:var(--brand-strong) !important;
      background:var(--brand-soft);
      border:1px solid rgba(47,111,169,.12);
    }
    .navbar-toggler{
      border:1px solid rgba(47,111,169,.18);
      border-radius:14px;
      box-shadow:none !important;
      padding:.45rem .7rem;
    }
    .navbar-toggler:focus{
      box-shadow:0 0 0 .2rem rgba(47,111,169,.12) !important;
    }

    .header-mini{
      display:flex;
      align-items:center;
      gap:.75rem;
    }
    .header-mini .pill{
      display:inline-flex;
      align-items:center;
      gap:.35rem;
      padding:.45rem .8rem;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--line);
      color:var(--muted);
      font-size:.9rem;
      box-shadow: 0 6px 16px rgba(17,40,66,.04);
      white-space:nowrap;
    }

    .hero{
      padding: 34px 0 18px;
      position:relative;
    }
    .hero-shell{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(219,230,241,.9);
      background:
        linear-gradient(135deg, rgba(255,255,255,.92), rgba(248,251,255,.76)),
        radial-gradient(circle at left top, rgba(95,143,190,.12), transparent 24%);
      border-radius: 30px;
      box-shadow: var(--shadow-lg);
    }
    .hero-shell::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 18% 22%, rgba(95,143,190,.10), transparent 16%),
        radial-gradient(circle at 82% 15%, rgba(47,111,169,.12), transparent 18%),
        radial-gradient(circle at 88% 80%, rgba(95,143,190,.08), transparent 14%);
      pointer-events:none;
    }
    .hero-inner{
      position:relative;
      z-index:1;
      padding: clamp(1.5rem, 4vw, 3rem);
    }
    .hero-kicker{
      display:inline-flex;
      align-items:center;
      gap:.5rem;
      padding:.45rem .8rem;
      border-radius:999px;
      background: rgba(95,143,190,.10);
      color:var(--brand-strong);
      border:1px solid rgba(47,111,169,.12);
      font-size:.92rem;
      font-weight:700;
    }
    .hero-title{
      margin: 18px 0 14px;
      font-size: clamp(2.2rem, 4vw, 4.15rem);
      line-height:1.05;
      font-weight:900;
      letter-spacing:-.03em;
    }
    .hero-subtitle{
      color:var(--muted);
      font-size:1.03rem;
      max-width: 40rem;
      margin-bottom: 1.5rem;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:.8rem;
      margin-bottom: 1.2rem;
    }
    .btn{
      border-radius: 14px;
      padding: .8rem 1.15rem;
      font-weight:700;
      transition: all var(--transition);
      box-shadow:none !important;
      border:1px solid transparent;
    }
    .btn:hover{
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(17,40,66,.10) !important;
    }
    .btn-primary{
      background: var(--brand);
      border-color: var(--brand);
    }
    .btn-primary:hover,
    .btn-primary:focus{
      background: var(--brand-strong);
      border-color: var(--brand-strong);
    }
    .btn-outline-primary{
      color: var(--brand-strong);
      border-color: rgba(47,111,169,.28);
      background: rgba(255,255,255,.7);
    }
    .btn-outline-primary:hover,
    .btn-outline-primary:focus{
      background: rgba(95,143,190,.10);
      color: var(--brand-strong);
      border-color: rgba(47,111,169,.36);
    }
    .btn-light-soft{
      background: #fff;
      color: var(--text);
      border: 1px solid var(--line);
    }
    .btn-light-soft:hover{
      background: #fff;
      color: var(--brand-strong);
      border-color: rgba(47,111,169,.28);
    }

    .hero-tags{
      display:flex;
      flex-wrap:wrap;
      gap:.55rem;
      margin-bottom: 1.4rem;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:.35rem;
      padding:.48rem .8rem;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--line);
      color:var(--muted);
      font-size:.88rem;
      font-weight:600;
      box-shadow: 0 8px 18px rgba(17,40,66,.04);
    }
    .tag strong{
      color:var(--brand-strong);
      font-weight:800;
    }

    .search-box{
      display:flex;
      align-items:center;
      gap:.6rem;
      padding:.65rem .7rem;
      border-radius:18px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow: 0 8px 22px rgba(17,40,66,.05);
      max-width: 36rem;
    }
    .search-box i{ color:var(--muted); }
    .search-box input{
      border:0;
      outline:0;
      width:100%;
      background:transparent;
      color:var(--text);
      padding: .15rem 0;
    }
    .search-box input::placeholder{
      color: #8aa0b6;
    }
    .search-box .btn{
      padding:.6rem .95rem;
      border-radius:12px;
      white-space:nowrap;
    }

    .hero-side{
      display:grid;
      gap: 1rem;
    }
    .hero-feature-card,
    .hero-mini-card,
    .info-card,
    .stat-card,
    .path-card,
    .contact-card,
    .content-card{
      border:1px solid var(--line);
      background: rgba(255,255,255,.94);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
      transition: all var(--transition);
    }
    .hero-feature-card:hover,
    .hero-mini-card:hover,
    .info-card:hover,
    .stat-card:hover,
    .path-card:hover,
    .contact-card:hover,
    .content-card:hover{
      transform: translateY(-3px);
      box-shadow: var(--shadow-lg);
      border-color: rgba(47,111,169,.18);
    }
    .hero-feature-card{
      min-height: 100%;
      overflow:hidden;
      position:relative;
      background:
        linear-gradient(145deg, rgba(255,255,255,.96), rgba(242,247,252,.92)),
        radial-gradient(circle at 85% 20%, rgba(95,143,190,.16), transparent 20%);
    }
    .hero-feature-image{
      position:relative;
      min-height: 240px;
      border-radius: 22px;
      background:
        linear-gradient(135deg, rgba(47,111,169,.18), rgba(95,143,190,.08)),
        radial-gradient(circle at 20% 20%, rgba(255,255,255,.95), transparent 36%),
        radial-gradient(circle at 82% 14%, rgba(255,255,255,.55), transparent 22%),
        linear-gradient(180deg, #eff6fd, #dcebfa);
      margin-bottom: 1rem;
      overflow:hidden;
    }
    .hero-feature-image::after{
      content:"";
      position:absolute;
      inset: 16px;
      border-radius: 18px;
      border:1px dashed rgba(47,111,169,.18);
    }
    .hero-feature-image .floating-badge{
      position:absolute;
      top:16px;
      left:16px;
      padding:.45rem .7rem;
      border-radius:999px;
      background:rgba(255,255,255,.88);
      border:1px solid rgba(219,230,241,.95);
      color:var(--brand-strong);
      font-size:.85rem;
      font-weight:700;
      box-shadow: 0 10px 18px rgba(17,40,66,.08);
    }
    .hero-feature-image .floating-note{
      position:absolute;
      right:16px;
      bottom:16px;
      padding:.5rem .75rem;
      border-radius:14px;
      background: rgba(255,255,255,.9);
      color:var(--muted);
      font-size:.86rem;
      border:1px solid rgba(219,230,241,.85);
    }
    .hero-feature-body{
      padding: 0 1rem 1rem;
    }
    .meta-row,
    .card-meta{
      display:flex;
      flex-wrap:wrap;
      gap:.5rem .85rem;
      color:var(--muted);
      font-size:.9rem;
    }
    .hero-mini-card{
      padding: 1rem;
      display:flex;
      flex-direction:column;
      gap:.75rem;
    }
    .mini-row{
      display:flex;
      align-items:flex-start;
      gap:.8rem;
    }
    .mini-icon{
      width:42px;
      height:42px;
      border-radius:14px;
      background: var(--accent-soft);
      color: var(--brand-strong);
      display:grid;
      place-items:center;
      flex:0 0 auto;
      font-size:1.1rem;
    }
    .mini-title{
      font-weight:800;
      margin:0;
      font-size:1rem;
    }
    .mini-text{
      margin:0;
      color:var(--muted);
      font-size:.92rem;
    }

    .chip-row{
      display:flex;
      flex-wrap:wrap;
      gap:.55rem;
    }
    .chip{
      display:inline-flex;
      align-items:center;
      gap:.35rem;
      padding:.5rem .85rem;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--line);
      color:var(--muted);
      font-size:.88rem;
      font-weight:600;
    }
    .chip.active{
      background: var(--brand-soft);
      color: var(--brand-strong);
      border-color: rgba(47,111,169,.16);
    }

    .card{
      border-radius: var(--radius-lg);
      border:1px solid var(--line);
      background:#fff;
      box-shadow: var(--shadow);
      overflow:hidden;
    }
    .card-body{
      padding: 1.15rem;
    }
    .card-title{
      color:var(--text);
      font-weight:800;
      line-height:1.35;
      margin-bottom:.55rem;
    }
    .card-text{
      color:var(--muted);
      margin-bottom: .9rem;
      font-size:.96rem;
    }
    .card-link{
      color: var(--brand-strong);
      font-weight:700;
    }

    .entry-grid{
      display:grid;
      gap: 1rem;
      grid-template-columns: 1.15fr .92fr .92fr;
    }
    .entry-large{
      min-height: 100%;
      padding: 1.35rem;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      background:
        linear-gradient(135deg, rgba(255,255,255,.98), rgba(241,247,253,.94));
    }
    .entry-large .entry-visual{
      min-height: 220px;
      border-radius: 20px;
      background:
        radial-gradient(circle at 15% 20%, rgba(47,111,169,.22), transparent 20%),
        radial-gradient(circle at 84% 22%, rgba(95,143,190,.18), transparent 18%),
        linear-gradient(135deg, #fdfefe 0%, #e9f2fb 52%, #d7e8f8 100%);
      position:relative;
      overflow:hidden;
      margin-bottom: 1rem;
    }
    .entry-large .entry-visual::before{
      content:"";
      position:absolute;
      inset:18px;
      border:1px solid rgba(47,111,169,.14);
      border-radius: 18px;
    }
    .entry-large .entry-visual::after{
      content:"";
      position:absolute;
      width:160px;
      height:160px;
      right: -28px;
      bottom: -36px;
      background: rgba(255,255,255,.72);
      border-radius: 45% 55% 62% 38% / 38% 49% 51% 62%;
      filter: blur(0.3px);
    }

    .entry-stack{
      display:grid;
      grid-template-columns: 1fr;
      gap:1rem;
    }
    .entry-small{
      min-height: 148px;
      padding: 1rem;
      display:flex;
      gap:1rem;
      align-items:flex-start;
      background: linear-gradient(180deg, #ffffff, #f8fbff);
    }
    .entry-small .thumb{
      width:88px;
      height:88px;
      border-radius:18px;
      background:
        linear-gradient(135deg, rgba(95,143,190,.18), rgba(47,111,169,.08)),
        linear-gradient(180deg, #eff6fd, #dce9f7);
      flex:0 0 auto;
      position:relative;
      overflow:hidden;
    }
    .entry-small .thumb::after{
      content:"";
      position:absolute;
      inset:10px;
      border-radius:14px;
      border:1px solid rgba(255,255,255,.55);
    }

    .stats-grid{
      display:grid;
      grid-template-columns: repeat(4, minmax(0,1fr));
      gap: 1rem;
    }
    .stat-card{
      padding:1.15rem;
      display:flex;
      flex-direction:column;
      gap:.9rem;
    }
    .stat-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:1rem;
    }
    .stat-icon{
      width:42px;
      height:42px;
      border-radius:14px;
      background: var(--brand-soft);
      display:grid;
      place-items:center;
      color:var(--brand-strong);
      font-size:1.05rem;
    }
    .stat-value{
      font-size: 2rem;
      line-height:1;
      font-weight:900;
      letter-spacing:-.03em;
    }
    .stat-label{
      margin:.2rem 0 0;
      font-weight:700;
      color:var(--text);
    }
    .stat-desc{
      margin:0;
      color:var(--muted);
      font-size:.94rem;
    }
    .progress{
      height:8px;
      border-radius:999px;
      background:#edf3f8;
      overflow:hidden;
    }
    .progress-bar{
      background: linear-gradient(90deg, var(--brand), #76a6d0);
      border-radius:999px;
    }

    .featured-grid{
      display:grid;
      grid-template-columns: 1.25fr .9fr .9fr;
      gap: 1rem;
      align-items:stretch;
    }
    .featured-card{
      display:flex;
      flex-direction:column;
      min-height: 100%;
    }
    .featured-card .cover{
      min-height: 220px;
      background:
        radial-gradient(circle at 20% 18%, rgba(255,255,255,.95), transparent 30%),
        radial-gradient(circle at 82% 16%, rgba(95,143,190,.20), transparent 16%),
        linear-gradient(135deg, #ebf4fc 0%, #d8e8f7 58%, #f8fbff 100%);
      position:relative;
    }
    .featured-card .cover::before{
      content:"";
      position:absolute;
      inset:20px;
      border:1px solid rgba(47,111,169,.14);
      border-radius:18px;
    }
    .featured-card .cover .flag{
      position:absolute;
      top:16px;
      left:16px;
      padding:.42rem .7rem;
      background:rgba(255,255,255,.92);
      border-radius:999px;
      border:1px solid rgba(219,230,241,.9);
      color:var(--brand-strong);
      font-size:.84rem;
      font-weight:700;
    }
    .featured-card .cover .score{
      position:absolute;
      right:16px;
      bottom:16px;
      padding:.45rem .75rem;
      background:rgba(255,255,255,.92);
      border-radius:14px;
      border:1px solid rgba(219,230,241,.9);
      color:var(--muted);
      font-size:.86rem;
    }
    .featured-card .card-body{
      flex:1;
      display:flex;
      flex-direction:column;
    }
    .featured-card.small .cover{
      min-height: 150px;
    }

    .steps{
      display:grid;
      grid-template-columns: repeat(4, minmax(0,1fr));
      gap: 1rem;
    }
    .step-card{
      padding: 1.2rem;
      border-radius: var(--radius-lg);
      background:#fff;
      border:1px solid var(--line);
      box-shadow: var(--shadow);
      position:relative;
      overflow:hidden;
    }
    .step-number{
      width:42px;
      height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background: var(--brand-soft);
      color: var(--brand-strong);
      font-weight:800;
      margin-bottom: .9rem;
    }
    .step-card h3{
      font-size:1.05rem;
      font-weight:800;
      margin-bottom:.55rem;
    }
    .step-card p{
      color:var(--muted);
      margin:0;
      font-size:.94rem;
    }

    .accordion{
      display:grid;
      gap: .85rem;
    }
    .accordion-item{
      border:1px solid var(--line);
      border-radius: 18px !important;
      overflow:hidden;
      box-shadow: var(--shadow);
      background:#fff;
    }
    .accordion-button{
      font-weight:700;
      color:var(--text);
      background:#fff;
      padding: 1.05rem 1.15rem;
      box-shadow:none !important;
    }
    .accordion-button:not(.collapsed){
      color:var(--brand-strong);
      background: linear-gradient(180deg, rgba(95,143,190,.08), rgba(255,255,255,1));
    }
    .accordion-button:focus{
      box-shadow:0 0 0 .2rem rgba(47,111,169,.12) !important;
    }
    .accordion-body{
      color:var(--muted);
      padding: 0 1.15rem 1.1rem;
    }

    .contact-grid{
      display:grid;
      grid-template-columns: .98fr 1.02fr;
      gap: 1rem;
      align-items:stretch;
    }
    .contact-panel{
      padding:1.35rem;
      border-radius: var(--radius-lg);
      background:
        linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
      border:1px solid var(--line);
      box-shadow: var(--shadow);
    }
    .contact-panel h3{
      font-size:1.25rem;
      font-weight:800;
      margin-bottom:.8rem;
    }
    .check-list{
      list-style:none;
      padding:0;
      margin:1rem 0 0;
      display:grid;
      gap:.7rem;
    }
    .check-list li{
      display:flex;
      align-items:flex-start;
      gap:.65rem;
      color:var(--muted);
    }
    .check-list i{
      color:var(--brand-strong);
      margin-top:.2rem;
    }

    .form-card{
      padding: 1.35rem;
      border-radius: var(--radius-lg);
      background:#fff;
      border:1px solid var(--line);
      box-shadow: var(--shadow);
    }
    .form-label{
      font-weight:700;
      color:var(--text);
      margin-bottom:.45rem;
    }
    .form-control, .form-select{
      border-radius: 14px;
      border-color: var(--line);
      padding:.82rem 1rem;
      color:var(--text);
      background:#fff;
      box-shadow:none !important;
    }
    .form-control:focus, .form-select:focus{
      border-color: rgba(47,111,169,.42);
      box-shadow:0 0 0 .2rem rgba(47,111,169,.10) !important;
    }
    textarea.form-control{
      min-height: 140px;
      resize: vertical;
    }

    .breadcrumb-wrap{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:1rem;
      margin-bottom: 1rem;
      flex-wrap:wrap;
    }
    .breadcrumb{
      margin:0;
      padding:.5rem .9rem;
      background:#fff;
      border:1px solid var(--line);
      border-radius:999px;
      box-shadow: 0 8px 18px rgba(17,40,66,.04);
      align-items:center;
    }
    .breadcrumb-item a{
      color:var(--muted);
      font-weight:600;
    }
    .breadcrumb-item.active{
      color:var(--brand-strong);
      font-weight:700;
    }
    .return-link{
      display:inline-flex;
      align-items:center;
      gap:.45rem;
      color:var(--brand-strong);
      font-weight:700;
      padding:.55rem .85rem;
      border-radius:999px;
      background: var(--brand-soft);
      border:1px solid rgba(47,111,169,.12);
    }

    .site-footer{
      padding: 38px 0 30px;
      border-top:1px solid rgba(219,230,241,.8);
      background: linear-gradient(180deg, rgba(248,251,255,.85), rgba(244,248,252,.98));
    }
    .footer-grid{
      display:grid;
      grid-template-columns: 1.2fr .8fr .8fr;
      gap:1rem;
      align-items:flex-start;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:.8rem;
      font-weight:900;
      font-size:1.05rem;
      margin-bottom:.8rem;
    }
    .footer-title{
      font-size:1rem;
      font-weight:800;
      margin-bottom:.8rem;
    }
    .footer-links{
      display:grid;
      gap:.55rem;
    }
    .footer-links a{
      color:var(--muted);
    }
    .footer-links a:hover{
      color:var(--brand-strong);
    }
    .footer-note{
      color:var(--muted);
      margin:0;
      font-size:.95rem;
    }

    .badge-soft{
      display:inline-flex;
      align-items:center;
      gap:.35rem;
      padding:.42rem .72rem;
      border-radius:999px;
      background: rgba(95,143,190,.10);
      color: var(--brand-strong);
      border:1px solid rgba(47,111,169,.12);
      font-size:.84rem;
      font-weight:700;
    }
    .badge-outline{
      display:inline-flex;
      align-items:center;
      gap:.35rem;
      padding:.42rem .72rem;
      border-radius:999px;
      background:#fff;
      color:var(--muted);
      border:1px solid var(--line);
      font-size:.84rem;
      font-weight:700;
    }
    .divider-soft{
      height:1px;
      background:linear-gradient(90deg, transparent, rgba(219,230,241,.95), transparent);
      margin: 1rem 0;
    }

    .shadow-card{
      box-shadow: var(--shadow);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background:#fff;
    }

    @media (max-width: 1199.98px){
      :root{ --space: 76px; --space-sm: 48px; }
      .entry-grid,
      .featured-grid{
        grid-template-columns: 1fr;
      }
      .stats-grid,
      .steps,
      .footer-grid{
        grid-template-columns: repeat(2, minmax(0,1fr));
      }
      .contact-grid{
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 991.98px){
      .hero-inner{ padding: 1.35rem; }
      .hero-shell{ border-radius: 24px; }
      .hero-side{ margin-top: 1rem; }
      .stats-grid{
        grid-template-columns: repeat(2, minmax(0,1fr));
      }
      .steps{
        grid-template-columns: repeat(2, minmax(0,1fr));
      }
      .footer-grid{
        grid-template-columns: 1fr;
      }
      .navbar-nav{
        padding-top: .8rem;
      }
    }

    @media (max-width: 767.98px){
      :root{ --space: 64px; --space-sm: 40px; }
      .section{ padding: 64px 0; }
      .hero-title{ font-size: clamp(2rem, 9vw, 3rem); }
      .hero-subtitle{ font-size: .98rem; }
      .search-box{
        flex-direction:column;
        align-items:stretch;
      }
      .search-box .btn{
        width:100%;
      }
      .stats-grid,
      .steps{
        grid-template-columns: 1fr;
      }
      .hero-actions .btn{
        flex:1 1 100%;
      }
      .breadcrumb-wrap{
        align-items:flex-start;
      }
      .breadcrumb{
        width:100%;
        overflow:auto;
      }
    }

    @media (max-width: 575.98px){
      .container-wide{ width: min(var(--container), calc(100% - 22px)); }
      .hero-inner{ padding: 1rem; }
      .hero-shell{ border-radius: 20px; }
      .section-head{ margin-bottom: 20px; }
      .section-title{ font-size: 1.65rem; }
      .search-box{
        padding:.55rem .6rem;
      }
      .hero-feature-image,
      .featured-card .cover{
        min-height: 180px;
      }
      .entry-small{
        flex-direction:column;
      }
      .entry-small .thumb{
        width:100%;
        height:160px;
      }
      .contact-panel,
      .form-card,
      .card-body,
      .step-card{
        padding: 1rem;
      }
    }

/* roulang page: category1 */
:root{
      --primary:#2563eb;
      --primary-dark:#1d4ed8;
      --primary-soft:#eaf2ff;
      --secondary:#60a5fa;
      --accent:#0ea5e9;
      --ink:#172033;
      --muted:#65758b;
      --soft-muted:#8ba0b8;
      --bg:#f7fbff;
      --panel:#ffffff;
      --panel-blue:#f0f7ff;
      --border:#dbe7f5;
      --border-strong:#bfd3ee;
      --shadow-sm:0 8px 24px rgba(32, 86, 159, .08);
      --shadow-md:0 16px 44px rgba(32, 86, 159, .12);
      --radius-sm:12px;
      --radius-md:18px;
      --radius-lg:24px;
      --container:1200px;
      --nav-height:68px;
      --transition:all .22s 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(--ink);
      background:
        radial-gradient(circle at 8% 10%, rgba(96,165,250,.16), transparent 28%),
        radial-gradient(circle at 92% 18%, rgba(14,165,233,.10), transparent 30%),
        linear-gradient(180deg,#ffffff 0%, var(--bg) 48%, #ffffff 100%);
      line-height:1.75;
      font-size:16px;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none;transition:var(--transition);}
    a:hover{color:var(--primary);}
    img{max-width:100%;display:block;}
    button,input,textarea,select{font:inherit;}
    input,textarea,select{outline:none;}
    ::selection{background:rgba(37,99,235,.16);color:var(--ink);}

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

    .site-header{
      position:sticky;
      top:0;
      z-index:1000;
      background:rgba(255,255,255,.86);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(219,231,245,.82);
      box-shadow:0 8px 28px rgba(15,50,90,.04);
    }
    .site-header .navbar{
      min-height:var(--nav-height);
      padding:0;
    }
    .navbar-brand{
      display:inline-flex;
      align-items:center;
      gap:10px;
      font-weight:800;
      color:var(--ink);
      letter-spacing:.2px;
      white-space:nowrap;
    }
    .brand-mark{
      width:38px;
      height:38px;
      border-radius:14px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      background:linear-gradient(135deg,#2563eb,#60a5fa);
      color:#fff;
      font-weight:900;
      box-shadow:0 10px 24px rgba(37,99,235,.22);
      flex:0 0 auto;
    }
    .navbar-nav{
      gap:8px;
      padding:10px 0;
    }
    .nav-link{
      color:var(--muted);
      font-weight:700;
      padding:9px 14px!important;
      border-radius:999px;
      position:relative;
    }
    .nav-link:hover{
      color:var(--primary);
      background:var(--primary-soft);
      transform:translateY(-1px);
    }
    .nav-link.active{
      color:var(--primary);
      background:#eef5ff;
      box-shadow:inset 0 0 0 1px rgba(37,99,235,.10);
    }
    .navbar-toggler{
      border:1px solid var(--border);
      border-radius:12px;
      padding:8px 10px;
      background:#fff;
      box-shadow:var(--shadow-sm);
    }
    .navbar-toggler:focus{
      box-shadow:0 0 0 4px rgba(37,99,235,.14);
    }

    .page-wrap{
      padding:34px 0 0;
    }
    .breadcrumb-bar{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:18px;
      margin:26px 0 22px;
      flex-wrap:wrap;
    }
    .breadcrumb-card{
      display:flex;
      align-items:center;
      gap:10px;
      padding:11px 14px;
      background:rgba(255,255,255,.82);
      border:1px solid var(--border);
      border-radius:999px;
      box-shadow:var(--shadow-sm);
      color:var(--muted);
      font-size:14px;
    }
    .breadcrumb-card a{
      color:var(--muted);
      font-weight:700;
    }
    .breadcrumb-card a:hover{color:var(--primary);}
    .breadcrumb-sep{color:var(--soft-muted);}
    .back-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:10px 14px;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--border);
      color:var(--primary);
      font-weight:800;
      box-shadow:var(--shadow-sm);
    }
    .back-link:hover{
      background:var(--primary);
      color:#fff;
      transform:translateY(-2px);
      box-shadow:var(--shadow-md);
    }

    .category-hero{
      padding:38px;
      border-radius:var(--radius-lg);
      background:
        linear-gradient(135deg,rgba(255,255,255,.94),rgba(240,247,255,.92)),
        radial-gradient(circle at 88% 15%,rgba(96,165,250,.24),transparent 28%);
      border:1px solid var(--border);
      box-shadow:var(--shadow-md);
      position:relative;
      overflow:hidden;
    }
    .category-hero:after{
      content:"";
      position:absolute;
      width:260px;
      height:260px;
      border-radius:50%;
      right:-90px;
      bottom:-130px;
      background:rgba(37,99,235,.08);
      pointer-events:none;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      background:#fff;
      color:var(--primary);
      border:1px solid rgba(37,99,235,.13);
      font-weight:800;
      font-size:14px;
      box-shadow:0 8px 22px rgba(37,99,235,.07);
      margin-bottom:16px;
    }
    h1{
      font-size:clamp(34px,4vw,46px);
      line-height:1.18;
      letter-spacing:-.5px;
      font-weight:900;
      margin:0 0 16px;
      color:var(--ink);
    }
    .hero-desc{
      max-width:760px;
      color:var(--muted);
      font-size:17px;
      margin:0;
    }
    .hero-actions{
      display:flex;
      align-items:center;
      gap:12px;
      flex-wrap:wrap;
      margin-top:26px;
    }
    .btn-main,.btn-soft,.btn-line{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:44px;
      padding:11px 18px;
      border-radius:999px;
      font-weight:850;
      border:1px solid transparent;
      transition:var(--transition);
      cursor:pointer;
      user-select:none;
    }
    .btn-main{
      background:var(--primary);
      color:#fff;
      box-shadow:0 14px 30px rgba(37,99,235,.20);
    }
    .btn-main:hover{
      background:var(--primary-dark);
      color:#fff;
      transform:translateY(-2px);
      box-shadow:0 18px 38px rgba(37,99,235,.26);
    }
    .btn-soft{
      background:var(--primary-soft);
      color:var(--primary);
      border-color:rgba(37,99,235,.12);
    }
    .btn-soft:hover{
      background:#dbeafe;
      color:var(--primary-dark);
      transform:translateY(-2px);
    }
    .btn-line{
      background:#fff;
      color:var(--primary);
      border-color:var(--border-strong);
    }
    .btn-line:hover{
      border-color:var(--primary);
      background:#f8fbff;
      transform:translateY(-2px);
      box-shadow:var(--shadow-sm);
    }
    .btn-main:focus,.btn-soft:focus,.btn-line:focus,.form-control:focus,.form-select:focus{
      outline:none;
      box-shadow:0 0 0 4px rgba(37,99,235,.15);
    }

    .filter-panel{
      margin-top:22px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      padding:16px;
      border-radius:var(--radius-md);
      background:rgba(255,255,255,.86);
      border:1px solid var(--border);
      box-shadow:var(--shadow-sm);
      flex-wrap:wrap;
    }
    .tag-list,.sort-list{
      display:flex;
      align-items:center;
      gap:10px;
      flex-wrap:wrap;
    }
    .tag-pill{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:8px 12px;
      border-radius:999px;
      background:#fff;
      color:var(--muted);
      border:1px solid var(--border);
      font-size:14px;
      font-weight:750;
      cursor:pointer;
      transition:var(--transition);
    }
    .tag-pill:hover,.tag-pill.active{
      color:var(--primary);
      border-color:rgba(37,99,235,.24);
      background:var(--primary-soft);
      transform:translateY(-1px);
    }
    .sort-btn{
      border:0;
      border-radius:999px;
      padding:8px 12px;
      color:var(--muted);
      background:#f4f8fd;
      font-size:14px;
      font-weight:800;
      transition:var(--transition);
    }
    .sort-btn:hover,.sort-btn.active{
      background:var(--primary);
      color:#fff;
    }

    main{padding-bottom:80px;}
    .section{
      padding:72px 0 0;
    }
    .section-head{
      display:flex;
      justify-content:space-between;
      gap:24px;
      align-items:end;
      margin-bottom:24px;
    }
    .section-kicker{
      color:var(--primary);
      font-size:14px;
      font-weight:900;
      letter-spacing:.8px;
      margin-bottom:8px;
    }
    h2{
      font-size:clamp(24px,3vw,32px);
      line-height:1.25;
      font-weight:900;
      margin:0;
      color:var(--ink);
    }
    .section-summary{
      color:var(--muted);
      max-width:560px;
      margin:0;
      font-size:15px;
    }

    .content-layout{
      display:grid;
      grid-template-columns:minmax(0,1fr) 320px;
      gap:24px;
      align-items:start;
    }
    .card-stream{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:20px;
    }
    .topic-card{
      background:rgba(255,255,255,.94);
      border:1px solid var(--border);
      border-radius:var(--radius-md);
      overflow:hidden;
      box-shadow:var(--shadow-sm);
      transition:var(--transition);
      min-height:100%;
      display:flex;
      flex-direction:column;
    }
    .topic-card:hover{
      transform:translateY(-5px);
      box-shadow:var(--shadow-md);
      border-color:rgba(37,99,235,.22);
    }
    .topic-card.featured{
      grid-column:span 2;
      display:grid;
      grid-template-columns:42% 1fr;
      min-height:276px;
    }
    .thumb{
      position:relative;
      min-height:188px;
      background:
        linear-gradient(135deg,rgba(37,99,235,.12),rgba(14,165,233,.10)),
        #eef6ff;
      overflow:hidden;
    }
    .topic-card.featured .thumb{min-height:100%;}
    .thumb svg{
      width:100%;
      height:100%;
      min-height:188px;
      object-fit:cover;
      display:block;
    }
    .thumb-badge{
      position:absolute;
      left:14px;
      top:14px;
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:6px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.90);
      color:var(--primary);
      border:1px solid rgba(37,99,235,.13);
      font-size:13px;
      font-weight:850;
      backdrop-filter:blur(10px);
    }
    .card-body-custom{
      padding:20px;
      display:flex;
      flex-direction:column;
      gap:12px;
      flex:1;
    }
    .card-labels{
      display:flex;
      gap:8px;
      flex-wrap:wrap;
      align-items:center;
    }
    .mini-label{
      display:inline-flex;
      align-items:center;
      padding:5px 9px;
      border-radius:999px;
      background:var(--primary-soft);
      color:var(--primary);
      font-size:12px;
      font-weight:850;
    }
    .mini-label.gray{
      background:#f2f6fb;
      color:var(--muted);
    }
    .topic-title{
      margin:0;
      font-size:20px;
      font-weight:900;
      line-height:1.35;
      color:var(--ink);
    }
    .topic-title a:hover{color:var(--primary);}
    .topic-desc{
      margin:0;
      color:var(--muted);
      font-size:15px;
      line-height:1.75;
    }
    .topic-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px 14px;
      align-items:center;
      color:var(--soft-muted);
      font-size:13px;
      margin-top:auto;
    }
    .topic-meta span{
      display:inline-flex;
      align-items:center;
      gap:6px;
    }
    .read-row{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      padding-top:4px;
    }
    .read-btn{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--primary);
      font-weight:900;
      font-size:14px;
    }
    .read-btn:hover{
      gap:11px;
      color:var(--primary-dark);
    }
    .heat{
      display:inline-flex;
      align-items:center;
      gap:5px;
      color:#f59e0b;
      font-weight:850;
      font-size:13px;
    }

    .sidebar{
      display:flex;
      flex-direction:column;
      gap:18px;
      position:sticky;
      top:92px;
    }
    .side-card{
      background:rgba(255,255,255,.94);
      border:1px solid var(--border);
      border-radius:var(--radius-md);
      padding:18px;
      box-shadow:var(--shadow-sm);
    }
    .side-title{
      font-weight:900;
      margin:0 0 14px;
      color:var(--ink);
      display:flex;
      align-items:center;
      gap:9px;
    }
    .side-title i{color:var(--primary);}
    .hot-tags{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .hot-tags a{
      padding:7px 10px;
      border-radius:999px;
      background:#f5f9fe;
      color:var(--muted);
      border:1px solid var(--border);
      font-size:13px;
      font-weight:750;
    }
    .hot-tags a:hover{
      background:var(--primary-soft);
      color:var(--primary);
      border-color:rgba(37,99,235,.2);
      transform:translateY(-1px);
    }
    .side-list{
      display:flex;
      flex-direction:column;
      gap:12px;
    }
    .side-item{
      padding:12px;
      border-radius:14px;
      background:#f8fbff;
      border:1px solid transparent;
      transition:var(--transition);
    }
    .side-item:hover{
      background:#fff;
      border-color:var(--border);
      box-shadow:var(--shadow-sm);
      transform:translateY(-2px);
    }
    .side-item strong{
      display:block;
      color:var(--ink);
      line-height:1.45;
      margin-bottom:4px;
      font-size:14px;
    }
    .side-item span{
      color:var(--soft-muted);
      font-size:12px;
    }
    .notice-card{
      background:linear-gradient(180deg,#eff6ff,#ffffff);
      border-color:rgba(37,99,235,.14);
    }
    .notice-card p{
      margin:0 0 14px;
      color:var(--muted);
      font-size:14px;
    }

    .stats-strip{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
    }
    .stat-card{
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-md);
      padding:20px;
      box-shadow:var(--shadow-sm);
      transition:var(--transition);
    }
    .stat-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow-md);
      border-color:rgba(37,99,235,.20);
    }
    .stat-num{
      font-size:28px;
      line-height:1;
      color:var(--primary);
      font-weight:950;
      margin-bottom:10px;
    }
    .stat-name{
      font-weight:900;
      margin-bottom:8px;
    }
    .stat-card p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }
    .progress-soft{
      height:6px;
      background:#e9f2ff;
      border-radius:999px;
      overflow:hidden;
      margin-top:14px;
    }
    .progress-soft span{
      display:block;
      height:100%;
      border-radius:999px;
      background:linear-gradient(90deg,var(--primary),var(--secondary));
    }

    .path-box{
      display:grid;
      grid-template-columns:1.08fr .92fr;
      gap:22px;
      align-items:stretch;
    }
    .path-card{
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      padding:28px;
      box-shadow:var(--shadow-sm);
    }
    .timeline{
      display:flex;
      flex-direction:column;
      gap:16px;
      margin-top:18px;
    }
    .time-step{
      display:grid;
      grid-template-columns:44px 1fr;
      gap:14px;
      align-items:start;
    }
    .step-dot{
      width:44px;
      height:44px;
      border-radius:16px;
      background:var(--primary-soft);
      color:var(--primary);
      display:flex;
      align-items:center;
      justify-content:center;
      font-weight:950;
      border:1px solid rgba(37,99,235,.12);
    }
    .step-text strong{
      display:block;
      font-weight:900;
      margin-bottom:4px;
    }
    .step-text p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }
    .guide-panel{
      background:
        linear-gradient(135deg,rgba(37,99,235,.95),rgba(96,165,250,.92));
      color:#fff;
      border-radius:var(--radius-lg);
      padding:28px;
      box-shadow:0 18px 42px rgba(37,99,235,.22);
      position:relative;
      overflow:hidden;
    }
    .guide-panel:after{
      content:"";
      position:absolute;
      right:-50px;
      top:-60px;
      width:180px;
      height:180px;
      border-radius:50%;
      background:rgba(255,255,255,.16);
    }
    .guide-panel h3{
      font-weight:950;
      margin:0 0 12px;
      position:relative;
      z-index:1;
    }
    .guide-panel p{
      color:rgba(255,255,255,.86);
      margin:0 0 18px;
      position:relative;
      z-index:1;
    }
    .guide-list{
      list-style:none;
      padding:0;
      margin:0;
      display:flex;
      flex-direction:column;
      gap:12px;
      position:relative;
      z-index:1;
    }
    .guide-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.18);
      border-radius:14px;
      padding:12px;
      color:#fff;
    }
    .guide-list i{margin-top:4px;}

    .accordion{
      --bs-accordion-border-width:0;
      --bs-accordion-border-radius:18px;
      display:grid;
      gap:12px;
    }
    .accordion-item{
      border:1px solid var(--border)!important;
      border-radius:18px!important;
      overflow:hidden;
      box-shadow:var(--shadow-sm);
      background:#fff;
    }
    .accordion-button{
      font-weight:900;
      color:var(--ink);
      background:#fff;
      padding:18px 20px;
      box-shadow:none!important;
    }
    .accordion-button:not(.collapsed){
      color:var(--primary);
      background:#f4f9ff;
    }
    .accordion-button:focus{
      box-shadow:0 0 0 4px rgba(37,99,235,.12)!important;
      border-color:transparent;
    }
    .accordion-body{
      color:var(--muted);
      padding:0 20px 18px;
      font-size:15px;
    }

    .pagination-wrap{
      display:flex;
      justify-content:center;
      margin-top:30px;
    }
    .pagination{
      gap:8px;
      flex-wrap:wrap;
      justify-content:center;
      margin:0;
    }
    .page-link{
      border:1px solid var(--border);
      color:var(--muted);
      min-width:42px;
      height:42px;
      border-radius:14px!important;
      display:flex;
      align-items:center;
      justify-content:center;
      font-weight:850;
      background:#fff;
      box-shadow:0 8px 20px rgba(32,86,159,.05);
    }
    .page-link:hover,.page-item.active .page-link{
      background:var(--primary);
      border-color:var(--primary);
      color:#fff;
      transform:translateY(-2px);
      box-shadow:0 12px 26px rgba(37,99,235,.18);
    }

    .contact-section{
      padding-top:72px;
    }
    .contact-panel{
      display:grid;
      grid-template-columns:.9fr 1.1fr;
      gap:24px;
      align-items:stretch;
      background:linear-gradient(180deg,#f5faff,#ffffff);
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      padding:28px;
      box-shadow:var(--shadow-md);
    }
    .contact-copy h2{margin-bottom:12px;}
    .contact-copy p{
      color:var(--muted);
      margin:0 0 18px;
    }
    .contact-mini{
      display:grid;
      gap:12px;
      margin-top:18px;
    }
    .contact-mini div{
      display:flex;
      align-items:center;
      gap:10px;
      padding:13px;
      border-radius:16px;
      background:#fff;
      border:1px solid var(--border);
      color:var(--muted);
      font-weight:750;
    }
    .contact-mini i{color:var(--primary);}
    .contact-form{
      background:#fff;
      border:1px solid var(--border);
      border-radius:var(--radius-md);
      padding:22px;
      box-shadow:var(--shadow-sm);
    }
    .form-label{
      font-weight:850;
      color:var(--ink);
      margin-bottom:7px;
    }
    .form-control,.form-select{
      border:1px solid var(--border);
      border-radius:14px;
      padding:12px 14px;
      color:var(--ink);
      background:#fbfdff;
    }
    .form-control::placeholder{color:#a3b2c5;}
    textarea.form-control{min-height:118px;resize:vertical;}
    .form-tip{
      color:var(--soft-muted);
      font-size:13px;
      margin:10px 0 0;
    }

    .site-footer{
      background:#0f1f36;
      color:#dbe7f5;
      padding:48px 0 28px;
      margin-top:20px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.45fr .75fr .95fr;
      gap:34px;
      align-items:start;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:10px;
      color:#fff;
      font-weight:900;
      margin-bottom:14px;
    }
    .footer-note{
      color:#9fb2ca;
      margin:0;
      max-width:430px;
      font-size:14px;
      line-height:1.8;
    }
    .footer-title{
      color:#fff;
      font-weight:900;
      margin-bottom:13px;
    }
    .footer-links{
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .footer-links a{
      color:#b8c7da;
      font-size:14px;
    }
    .footer-links a:hover{
      color:#fff;
      transform:translateX(3px);
    }

    @media (max-width: 1024px){
      .container-wide{width:min(100% - 32px, var(--container));}
      .content-layout{
        grid-template-columns:1fr;
      }
      .sidebar{
        position:static;
        display:grid;
        grid-template-columns:repeat(2,1fr);
      }
      .stats-strip{
        grid-template-columns:repeat(2,1fr);
      }
      .path-box,.contact-panel{
        grid-template-columns:1fr;
      }
    }

    @media (max-width: 768px){
      :root{--nav-height:62px;}
      .site-header .navbar{padding:8px 0;}
      .navbar-collapse{
        margin-top:10px;
        padding:12px;
        background:#fff;
        border:1px solid var(--border);
        border-radius:18px;
        box-shadow:var(--shadow-md);
      }
      .navbar-nav{align-items:stretch!important;}
      .nav-link{display:block;}
      .page-wrap{padding-top:12px;}
      .breadcrumb-card{
        border-radius:18px;
        align-items:flex-start;
        flex-wrap:wrap;
      }
      .category-hero{
        padding:26px;
      }
      .filter-panel{
        align-items:stretch;
      }
      .tag-list,.sort-list{
        width:100%;
      }
      .section{
        padding-top:52px;
      }
      .section-head{
        display:block;
      }
      .section-summary{
        margin-top:10px;
      }
      .card-stream{
        grid-template-columns:1fr;
      }
      .topic-card.featured{
        grid-column:auto;
        grid-template-columns:1fr;
      }
      .topic-card.featured .thumb{min-height:205px;}
      .sidebar{
        grid-template-columns:1fr;
      }
      .footer-grid{
        grid-template-columns:1fr;
        gap:24px;
      }
    }

    @media (max-width: 520px){
      body{font-size:15px;}
      .container-wide{width:min(100% - 24px, var(--container));}
      .brand-mark{
        width:34px;
        height:34px;
        border-radius:12px;
      }
      .navbar-brand span:last-child{
        max-width:190px;
        overflow:hidden;
        text-overflow:ellipsis;
      }
      .category-hero{
        padding:22px 18px;
        border-radius:20px;
      }
      .hero-actions{
        align-items:stretch;
      }
      .btn-main,.btn-soft,.btn-line{
        width:100%;
      }
      .stats-strip{
        grid-template-columns:1fr;
      }
      .contact-panel{
        padding:18px;
        border-radius:20px;
      }
      .contact-form{
        padding:18px;
      }
      .read-row{
        align-items:flex-start;
        flex-direction:column;
      }
    }