/* roulang page: index */
:root {
      --primary: #0b2b5e;
      --primary-light: #1a3f7a;
      --primary-dark: #071d3f;
      --accent: #c9a227;
      --accent-light: #e0bf4a;
      --accent-dark: #a07f1a;
      --bg: #ffffff;
      --bg-alt: #f7f9fc;
      --bg-dark: #0a1929;
      --text: #1e2a3a;
      --text-dim: #5e6f82;
      --text-light: #8b9aaf;
      --border: #e2e8f0;
      --border-light: #edf2f7;
      --radius: 12px;
      --radius-sm: 8px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 8px rgba(11, 43, 94, 0.06);
      --shadow: 0 8px 28px rgba(11, 43, 94, 0.1);
      --shadow-lg: 0 20px 45px rgba(11, 43, 94, 0.15);
      --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
      --transition: 0.2s ease;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: var(--font);
      background: var(--bg);
      color: var(--text);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: color var(--transition);
    }

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

    button, .button {
      font-family: var(--font);
      cursor: pointer;
      border: none;
      background: none;
      transition: all var(--transition);
    }

    input {
      font-family: var(--font);
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 2rem;
    }

    /* header / navigation */
    .header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }

    .nav-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0.9rem 2rem;
      max-width: 1280px;
      margin: 0 auto;
    }

    .logo {
      font-weight: 700;
      font-size: 1.4rem;
      letter-spacing: -0.3px;
      color: var(--primary);
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .logo i {
      color: var(--accent);
      font-size: 1.7rem;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 2.5rem;
      list-style: none;
      font-weight: 500;
    }

    .nav-links a {
      color: var(--text);
      position: relative;
      padding: 0.3rem 0;
      font-size: 0.98rem;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary);
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -2px;
      width: 0;
      height: 2px;
      background: var(--accent);
      transition: width var(--transition);
    }

    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }

    .nav-cta {
      background: var(--accent);
      color: #fff;
      padding: 0.5rem 1.4rem;
      border-radius: 30px;
      font-weight: 600;
      font-size: 0.9rem;
      white-space: nowrap;
      box-shadow: 0 4px 12px rgba(201, 162, 39, 0.25);
    }

    .nav-cta:hover {
      background: var(--accent-dark);
      color: #fff;
      box-shadow: 0 6px 18px rgba(201, 162, 39, 0.35);
    }

    .mobile-toggle {
      display: none;
      font-size: 1.6rem;
      color: var(--primary);
      background: none;
      border: none;
      padding: 0.4rem;
    }

    /* hero section */
    .hero {
      background: linear-gradient(135deg, #0b1e3a 0%, #0b2b5e 50%, #0f3460 100%);
      color: #fff;
      padding: 5rem 0 6rem;
      position: relative;
      overflow: hidden;
      display: flex;
      align-items: center;
    }

    .hero::before {
      content: '';
      position: absolute;
      top: -20%;
      right: -10%;
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(201,162,39,0.15) 0%, transparent 70%);
      border-radius: 50%;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.9fr;
      gap: 3rem;
      align-items: center;
      position: relative;
      z-index: 2;
    }

    .hero-content h1 {
      font-size: 3rem;
      font-weight: 700;
      line-height: 1.2;
      margin-bottom: 1.5rem;
      letter-spacing: -0.6px;
    }

    .hero-content h1 span {
      color: var(--accent-light);
    }

    .hero-desc {
      font-size: 1.1rem;
      line-height: 1.8;
      color: rgba(255,255,255,0.85);
      margin-bottom: 2rem;
      max-width: 560px;
    }

    .hero-actions {
      display: flex;
      gap: 1.2rem;
      flex-wrap: wrap;
    }

    .btn-primary {
      background: var(--accent);
      color: #fff;
      padding: 0.8rem 2rem;
      border-radius: 30px;
      font-weight: 600;
      font-size: 1rem;
      box-shadow: 0 6px 20px rgba(201,162,39,0.3);
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
    }

    .btn-primary:hover {
      background: var(--accent-light);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 10px 28px rgba(201,162,39,0.4);
    }

    .btn-outline {
      background: transparent;
      color: #fff;
      border: 1.5px solid rgba(255,255,255,0.5);
      padding: 0.8rem 2rem;
      border-radius: 30px;
      font-weight: 600;
      font-size: 1rem;
    }

    .btn-outline:hover {
      border-color: #fff;
      background: rgba(255,255,255,0.08);
      color: #fff;
    }

    .hero-visual {
      background: url('assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-radius: var(--radius-lg);
      min-height: 340px;
      box-shadow: 0 25px 50px rgba(0,0,0,0.4);
      border: 1px solid rgba(255,255,255,0.1);
    }

    /* section common */
    .section {
      padding: 5rem 0;
    }

    .section-alt {
      background: var(--bg-alt);
    }

    .section-header {
      text-align: center;
      margin-bottom: 3.5rem;
    }

    .section-header h2 {
      font-size: 2.3rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 0.8rem;
    }

    .section-sub {
      color: var(--text-dim);
      font-size: 1.1rem;
    }

    /* stats cards */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }

    .stat-card {
      background: #fff;
      padding: 2rem 1.5rem;
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      text-align: center;
      border: 1px solid var(--border-light);
    }

    .stat-number {
      font-size: 2.6rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 0.4rem;
    }

    .stat-label {
      color: var(--text-dim);
      font-size: 0.95rem;
    }

    /* category cards */
    .category-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.8rem;
    }

    .category-card {
      background: #fff;
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow);
      transition: transform var(--transition), box-shadow var(--transition);
      border: 1px solid var(--border-light);
    }

    .category-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
    }

    .category-img {
      height: 180px;
      background-size: cover;
      background-position: center;
    }

    .category-body {
      padding: 1.5rem;
    }

    .category-body h3 {
      font-size: 1.2rem;
      font-weight: 600;
      color: var(--primary);
      margin-bottom: 0.5rem;
    }

    .category-body p {
      color: var(--text-dim);
      font-size: 0.95rem;
      margin-bottom: 1rem;
    }

    .text-link {
      color: var(--accent-dark);
      font-weight: 600;
      font-size: 0.9rem;
    }

    .text-link:hover {
      color: var(--primary);
    }

    /* brand story */
    .brand-story {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3rem;
      align-items: center;
    }

    .story-text h3 {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 1.5rem;
    }

    .story-text p {
      color: var(--text);
      margin-bottom: 1.2rem;
      line-height: 1.9;
    }

    .story-img {
      background: url('assets/images/coverpic/cover-3.webp') center/cover no-repeat;
      border-radius: var(--radius-lg);
      min-height: 380px;
      box-shadow: var(--shadow-lg);
    }

    /* features */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }

    .feature-card {
      background: #fff;
      padding: 2rem;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-light);
    }

    .feature-icon {
      font-size: 2.2rem;
      color: var(--accent);
      margin-bottom: 1.2rem;
    }

    .feature-card h3 {
      font-weight: 600;
      font-size: 1.27rem;
      color: var(--primary);
      margin-bottom: 0.7rem;
    }

    /* news list */
    .news-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 1.8rem;
    }

    .news-item {
      background: #fff;
      border-radius: var(--radius);
      padding: 1.5rem;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-light);
      display: flex;
      flex-direction: column;
    }

    .news-date {
      font-size: 0.8rem;
      color: var(--text-light);
      margin-bottom: 0.5rem;
    }

    .news-title {
      font-weight: 600;
      color: var(--primary);
      font-size: 1.1rem;
      margin-bottom: 0.6rem;
    }

    .news-excerpt {
      color: var(--text-dim);
      font-size: 0.93rem;
      flex: 1;
      margin-bottom: 1rem;
    }

    /* faq */
    .faq-list {
      max-width: 820px;
      margin: 0 auto;
    }

    .faq-item {
      background: #fff;
      border-radius: var(--radius);
      padding: 1.5rem 2rem;
      margin-bottom: 1rem;
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-light);
    }

    .faq-question {
      font-weight: 600;
      font-size: 1.1rem;
      color: var(--primary);
      margin-bottom: 0.5rem;
    }

    .faq-answer {
      color: var(--text-dim);
      line-height: 1.8;
    }

    /* testimonials */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.8rem;
    }

    .testimonial-card {
      background: #fff;
      padding: 1.8rem;
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      border: 1px solid var(--border-light);
    }

    .testimonial-text {
      font-style: italic;
      color: var(--text);
      margin-bottom: 1rem;
    }

    .testimonial-author {
      font-weight: 600;
      color: var(--primary);
    }

    /* cta */
    .cta-section {
      background: linear-gradient(135deg, var(--primary-dark), var(--primary));
      color: #fff;
      text-align: center;
      padding: 4.5rem 1.5rem;
      border-radius: var(--radius-lg);
      margin: 3rem 0;
    }

    .cta-section h2 {
      font-size: 2rem;
      font-weight: 700;
      margin-bottom: 1rem;
    }

    /* footer */
    .footer {
      background: var(--bg-dark);
      color: #cbd5e0;
      padding: 3.5rem 0 2rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 2.5rem;
    }

    .footer-brand {
      font-size: 1.5rem;
      font-weight: 700;
      color: #fff;
      margin-bottom: 0.8rem;
    }

    .footer-links h4 {
      color: #fff;
      font-weight: 600;
      margin-bottom: 1rem;
    }

    .footer-links a {
      display: block;
      color: #a0aec0;
      margin-bottom: 0.5rem;
      font-size: 0.92rem;
    }

    .footer-links a:hover {
      color: var(--accent-light);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      margin-top: 2.5rem;
      padding-top: 1.5rem;
      text-align: center;
      font-size: 0.85rem;
      color: #718096;
    }

    @media (max-width: 1024px) {
      .nav-links { gap: 1.5rem; }
      .hero-grid { grid-template-columns: 1fr; gap: 2rem; }
      .hero-visual { min-height: 260px; }
      .stats-grid, .category-grid { grid-template-columns: repeat(2, 1fr); }
      .brand-story { grid-template-columns: 1fr; }
      .features-grid { grid-template-columns: repeat(2, 1fr); }
      .news-list, .testimonial-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 768px) {
      .nav-links { display: none; }
      .mobile-toggle { display: inline-block; }
      .nav-bar { padding: 0.8rem 1.5rem; }
      .hero { padding: 3rem 0 4rem; }
      .hero-content h1 { font-size: 2.2rem; }
      .stats-grid { grid-template-columns: 1fr 1fr; }
      .category-grid, .features-grid { grid-template-columns: 1fr; }
      .container { padding: 0 1.2rem; }
      .footer-grid { grid-template-columns: 1fr; }
    }

    @media (max-width: 520px) {
      .hero-actions { flex-direction: column; }
      .btn-primary, .btn-outline { width: 100%; justify-content: center; }
    }

/* roulang page: category3 */
:root {
--primary: #0B2B5E;
--primary-light: #1A3F78;
--accent: #C8A44E;
--accent-soft: #E8D5A3;
--bg: #F8F9FC;
--surface: #FFFFFF;
--text: #1A1A1A;
--text-soft: #5A5F6B;
--text-muted: #8A8F98;
--border: #E2E6EE;
--border-light: #F0F3F9;
--radius-sm: 10px;
--radius: 16px;
--radius-lg: 24px;
--shadow-sm: 0 2px 8px rgba(11,43,94,0.04);
--shadow: 0 6px 24px rgba(11,43,94,0.08);
--shadow-lg: 0 16px 48px rgba(11,43,94,0.12);
--transition: 0.25s cubic-bezier(0.4,0,0.2,1);
--font-sans: 'Segoe UI','PingFang SC','Microsoft YaHei','Helvetica Neue',sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-sans);background-color:var(--bg);color:var(--text);line-height:1.6;font-size:16px;min-height:100vh;display:flex;flex-direction:column}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit;transition:var(--transition)}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
h1,h2,h3,h4{line-height:1.3;font-weight:700;color:var(--text)}
.container{max-width:1280px;margin:0 auto;padding:0 28px}
.header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:99;box-shadow:var(--shadow-sm)}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 28px;height:72px;max-width:1280px;margin:0 auto}
.logo{display:flex;align-items:center;gap:10px;font-size:1.35rem;font-weight:700;color:var(--primary);white-space:nowrap;letter-spacing:-0.3px}
.logo i{font-size:1.5rem;color:var(--accent)}
.nav-links{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.nav-links a{padding:8px 16px;border-radius:40px;font-size:0.95rem;font-weight:500;color:var(--text-soft);transition:var(--transition);white-space:nowrap;position:relative}
.nav-links a:hover{color:var(--primary);background:rgba(11,43,94,0.04)}
.nav-links a.active{color:var(--primary);background:rgba(11,43,94,0.08);font-weight:600}
.nav-cta{display:flex;align-items:center;gap:6px;padding:10px 22px;border-radius:40px;background:linear-gradient(135deg,var(--accent),#b8923b);color:#fff;font-weight:600;font-size:0.9rem;white-space:nowrap;box-shadow:0 4px 14px rgba(200,164,78,0.35);transition:var(--transition)}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(200,164,78,0.45);color:#fff}
.mobile-toggle{display:none;font-size:1.6rem;color:var(--text);padding:6px}
.page-hero{background:linear-gradient(170deg,#0B2B5E 0%,#0c346e 50%,#0a254d 100%);padding:56px 0 52px;color:#fff;position:relative;overflow:hidden}
.page-hero::after{content:'';position:absolute;inset:0;background:url('assets/images/backpic/back-3.webp') center/cover no-repeat;opacity:0.14;pointer-events:none}
.page-hero-content{position:relative;z-index:2}
.page-badge{display:inline-block;padding:6px 16px;border-radius:40px;background:rgba(255,255,255,0.13);color:var(--accent-soft);font-size:0.8rem;font-weight:600;letter-spacing:0.8px;margin-bottom:14px;backdrop-filter:blur(8px)}
.page-hero h1{font-size:clamp(2rem,3.5vw,2.8rem);font-weight:800;color:#fff;margin-bottom:10px;letter-spacing:-0.5px}
.page-hero p{color:rgba(255,255,255,0.8);font-size:1.08rem;max-width:600px;line-height:1.7}
.news-filter{padding:10px 0;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:72px;z-index:40;display:flex;gap:8px;flex-wrap:wrap}
.news-filter a{padding:7px 18px;border-radius:30px;font-size:0.88rem;font-weight:500;color:var(--text-soft);border:1px solid var(--border);transition:var(--transition);white-space:nowrap}
.news-filter a:hover{color:var(--primary);border-color:var(--primary-light);background:rgba(11,43,94,0.03)}
.news-filter a.active-filter{background:var(--primary);color:#fff;border-color:var(--primary);font-weight:600}
main{flex:1;padding:40px 0 60px}
.section-header{margin-bottom:32px}
.section-header h2{font-size:1.7rem;font-weight:700;color:var(--text);margin-bottom:8px}
.section-header .sub{color:var(--text-soft);font-size:0.95rem}
.hot-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px;margin-bottom:48px}
.news-card{background:var(--surface);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition);display:flex;flex-direction:column;border:1px solid var(--border-light)}
.news-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.news-card-img{position:relative;height:200px;overflow:hidden;background:var(--border-light)}
.news-card-img img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}
.news-card:hover .news-card-img img{transform:scale(1.04)}
.news-tag{position:absolute;top:14px;left:14px;padding:4px 12px;border-radius:20px;font-size:0.75rem;font-weight:700;background:var(--accent);color:#fff;letter-spacing:0.4px}
.news-card-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.news-card-body .date{font-size:0.78rem;color:var(--text-muted);margin-bottom:6px}
.news-card-body h3{font-size:1.08rem;font-weight:700;margin-bottom:8px;line-height:1.45;color:var(--text)}
.news-card-body p{font-size:0.9rem;color:var(--text-soft);line-height:1.6;margin-bottom:14px;flex:1}
.read-more{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:0.88rem;color:var(--primary);transition:var(--transition);align-self:flex-start}
.read-more i{font-size:0.75rem;transition:var(--transition)}
.read-more:hover{color:var(--accent)}
.read-more:hover i{transform:translateX(4px)}
.insight-row{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:48px}
.insight-card{background:var(--surface);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);border:1px solid var(--border-light);display:flex;gap:20px;align-items:flex-start}
.insight-card .icon-circle{width:52px;height:52px;min-width:52px;border-radius:50%;background:rgba(11,43,94,0.07);display:flex;align-items:center;justify-content:center;font-size:1.5rem;color:var(--primary)}
.insight-card h4{font-size:1.1rem;font-weight:700;margin-bottom:4px}
.insight-card p{font-size:0.9rem;color:var(--text-soft);line-height:1.65}
.video-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px;margin-bottom:48px}
.video-card{background:var(--surface);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--transition);border:1px solid var(--border-light)}
.video-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.video-thumb{position:relative;height:180px;background:var(--border-light);overflow:hidden}
.video-thumb img{width:100%;height:100%;object-fit:cover}
.video-play{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,0.35);color:#fff;font-size:2.4rem;opacity:0.9;transition:var(--transition)}
.video-card:hover .video-play{opacity:1;background:rgba(0,0,0,0.45)}
.video-body{padding:16px 18px}
.video-body h4{font-size:0.98rem;font-weight:700;margin-bottom:4px}
.video-body .meta{font-size:0.78rem;color:var(--text-muted)}
.cta-banner{background:linear-gradient(135deg,var(--primary),#0f3c7a);border-radius:var(--radius-lg);padding:48px 44px;color:#fff;display:flex;align-items:center;justify-content:space-between;gap:28px;margin-bottom:48px;flex-wrap:wrap}
.cta-banner h3{font-size:1.6rem;font-weight:700;color:#fff;margin-bottom:6px}
.cta-banner p{color:rgba(255,255,255,0.78);font-size:0.95rem;max-width:420px}
.cta-btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:40px;background:var(--accent);color:#fff;font-weight:700;font-size:1rem;white-space:nowrap;box-shadow:0 8px 28px rgba(200,164,78,0.4);transition:var(--transition)}
.cta-btn:hover{background:#d6b256;transform:translateY(-2px);color:#fff}
.footer{background:#0A1F3B;color:rgba(255,255,255,0.7);padding:48px 0 20px;margin-top:auto}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;margin-bottom:30px}
.footer-brand{font-size:1.15rem;font-weight:700;color:#fff;margin-bottom:8px}
.footer-links h4{font-size:0.9rem;font-weight:700;color:#fff;margin-bottom:12px;text-transform:uppercase;letter-spacing:0.6px}
.footer-links a{display:block;color:rgba(255,255,255,0.6);font-size:0.88rem;margin-bottom:8px;transition:var(--transition)}
.footer-links a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:18px;font-size:0.8rem;color:rgba(255,255,255,0.4);text-align:center}
@media(max-width:1024px){
.insight-row{grid-template-columns:1fr}
.video-row{grid-template-columns:1fr 1fr}
.footer-grid{grid-template-columns:1fr 1fr;gap:28px}
.nav-links{gap:2px}
.nav-links a{padding:7px 12px;font-size:0.85rem}
}
@media(max-width:768px){
.nav-bar{padding:0 18px}
.mobile-toggle{display:block}
.nav-links{position:fixed;top:72px;left:0;width:100%;background:var(--surface);flex-direction:column;align-items:stretch;gap:0;padding:12px 0;box-shadow:var(--shadow-lg);transform:translateY(-120%);opacity:0;pointer-events:none;transition:0.3s ease;z-index:98}
.nav-links.open{transform:translateY(0);opacity:1;pointer-events:all}
.nav-links a{padding:12px 24px;border-radius:0;font-size:1rem}
.nav-cta{padding:8px 16px;font-size:0.82rem}
.container{padding:0 18px}
.hot-grid{grid-template-columns:1fr;gap:18px}
.video-row{grid-template-columns:1fr 1fr}
.cta-banner{flex-direction:column;text-align:center;padding:32px 24px}
.page-hero{padding:40px 0 36px}
.page-hero h1{font-size:1.7rem}
}
@media(max-width:520px){
.container{padding:0 14px}
.video-row{grid-template-columns:1fr}
.insight-card{flex-direction:column;gap:14px;padding:20px}
.footer-grid{grid-template-columns:1fr;gap:24px}
.page-hero h1{font-size:1.45rem}
.nav-bar{height:64px}
.nav-links{top:64px}
}

/* roulang page: category1 */
:root {
            --primary: #0f2b46;
            --primary-light: #1a3f64;
            --accent: #c9a050;
            --accent-light: #e0c478;
            --bg: #f8f6f2;
            --bg-white: #ffffff;
            --bg-light: #f0ede7;
            --bg-dark: #0a1f35;
            --text: #1c1c1c;
            --text-light: #5a5a5a;
            --text-muted: #8a8a8a;
            --text-on-dark: #e8e4dc;
            --border: #e2ded6;
            --border-light: #ede9e2;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
            --transition: 0.22s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont,
                sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont,
                sans-serif;
            --nav-height: 64px;
            --max-width: 1200px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
            font-size: 16px;
            letter-spacing: 0.01em;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input {
            font-family: inherit;
        }

        /* ========== CONTAINER ========== */
        .custom-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .custom-container {
                padding: 0 16px;
            }
        }

        /* ========== HEADER / NAV ========== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-xs);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .header .custom-container {
            display: flex;
            align-items: center;
            width: 100%;
            justify-content: space-between;
        }
        .nav-bar {
            display: flex;
            align-items: center;
            gap: 32px;
            width: 100%;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
            letter-spacing: 0.02em;
            font-family: var(--font-heading);
            flex-shrink: 0;
        }
        .logo i {
            font-style: normal;
            font-size: 1.5rem;
            color: var(--accent);
        }
        .logo:hover {
            color: var(--primary-light);
        }
        .nav-links {
            display: flex;
            list-style: none;
            gap: 6px;
            align-items: center;
            flex-wrap: wrap;
        }
        .nav-links a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.015em;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--accent);
            background: rgba(201, 160, 80, 0.06);
        }
        .nav-links a.active {
            color: var(--accent);
            background: rgba(201, 160, 80, 0.1);
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: 22px;
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff !important;
            white-space: nowrap;
            transition: all var(--transition);
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }
        .nav-cta:hover {
            background: #b8903a;
            color: #fff !important;
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .mobile-toggle:hover {
            background: var(--bg-light);
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }
            .nav-links a {
                padding: 7px 11px;
                font-size: 0.88rem;
            }
            .nav-cta {
                padding: 7px 15px;
                font-size: 0.85rem;
            }
            .nav-bar {
                gap: 16px;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                gap: 0;
                padding: 12px 0;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow);
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                display: block;
                padding: 12px 24px;
                border-radius: 0;
                font-size: 1rem;
                text-align: left;
                border-bottom: 1px solid var(--border-light);
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a:last-child {
                border-bottom: none;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-cta {
                font-size: 0.82rem;
                padding: 7px 14px;
            }
            .nav-bar {
                gap: 10px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .logo i {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 520px) {
            .nav-cta {
                padding: 6px 10px;
                font-size: 0.75rem;
                gap: 3px;
            }
            .logo {
                font-size: 1rem;
            }
            .logo i {
                font-size: 1.1rem;
            }
            .header {
                --nav-height: 56px;
            }
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            background: var(--primary);
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 40%;
            background-repeat: no-repeat;
            padding: 80px 0;
            min-height: 320px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 27, 46, 0.88) 0%, rgba(15, 27, 46, 0.65) 50%, rgba(10, 20, 35, 0.78) 100%);
            z-index: 1;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            color: #fff;
        }
        .page-banner .banner-badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 16px;
        }
        .page-banner h1 {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            margin-bottom: 12px;
            color: #fff;
            line-height: 1.3;
        }
        .page-banner .banner-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 50px 0;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 1.9rem;
            }
            .page-banner .banner-desc {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .page-banner {
                padding: 36px 0;
                min-height: 200px;
            }
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .page-banner .banner-desc {
                font-size: 0.85rem;
            }
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: 64px 0;
        }
        .section-sm {
            padding: 40px 0;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--primary);
            text-align: center;
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }
        .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 40px;
            letter-spacing: 0.015em;
        }
        @media (max-width: 768px) {
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.45rem;
            }
            .section-subtitle {
                font-size: 0.85rem;
                margin-bottom: 28px;
            }
        }

        /* ========== STATS CARDS ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .stat-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--accent-light);
        }
        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 10px;
        }
        .stat-card .stat-number {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.02em;
            line-height: 1.2;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
            letter-spacing: 0.02em;
        }
        .stat-card .stat-change {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 12px;
            margin-top: 8px;
        }
        .stat-change.up {
            background: #e8f5e9;
            color: #2e7d32;
        }
        .stat-change.down {
            background: #fce4ec;
            color: #c62828;
        }
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 18px 12px;
            }
            .stat-card .stat-number {
                font-size: 1.8rem;
            }
            .stat-card .stat-icon {
                font-size: 1.5rem;
            }
        }

        /* ========== MATCH LIST ========== */
        .match-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .match-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .match-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .match-card .match-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .match-card .match-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .match-card:hover .match-img img {
            transform: scale(1.05);
        }
        .match-card .match-img .match-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: #fff;
            padding: 5px 12px;
            border-radius: 14px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            z-index: 2;
        }
        .match-card .match-body {
            padding: 18px 16px;
        }
        .match-card .match-teams {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--primary);
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }
        .match-card .match-info {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }
        .match-card .match-info span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .match-card .match-score {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--accent);
            margin-top: 8px;
            letter-spacing: 0.03em;
        }
        @media (max-width: 1024px) {
            .match-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 640px) {
            .match-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .match-card .match-img {
                height: 160px;
            }
        }

        /* ========== RANKING TABLE ========== */
        .ranking-panel {
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow);
            overflow: hidden;
            border: 1px solid var(--border-light);
        }
        .ranking-header {
            background: var(--primary);
            color: #fff;
            padding: 18px 24px;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.15rem;
            letter-spacing: 0.03em;
        }
        .ranking-row {
            display: flex;
            align-items: center;
            padding: 14px 24px;
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition);
            gap: 16px;
        }
        .ranking-row:last-child {
            border-bottom: none;
        }
        .ranking-row:hover {
            background: var(--bg-light);
        }
        .ranking-rank {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--primary);
            width: 36px;
            text-align: center;
            flex-shrink: 0;
        }
        .ranking-rank.top {
            color: var(--accent);
            font-size: 1.3rem;
        }
        .ranking-flag {
            font-size: 1.5rem;
            flex-shrink: 0;
            width: 40px;
            text-align: center;
        }
        .ranking-name {
            flex: 1;
            font-weight: 600;
            color: var(--text);
            letter-spacing: 0.02em;
            font-size: 0.95rem;
        }
        .ranking-bar-wrap {
            flex: 2;
            height: 8px;
            background: var(--border-light);
            border-radius: 4px;
            overflow: hidden;
            min-width: 60px;
        }
        .ranking-bar-fill {
            height: 100%;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            transition: width 0.6s ease;
        }
        .ranking-score {
            font-weight: 700;
            color: var(--primary);
            width: 50px;
            text-align: right;
            flex-shrink: 0;
            font-size: 0.95rem;
        }
        @media (max-width: 640px) {
            .ranking-row {
                padding: 10px 14px;
                gap: 8px;
            }
            .ranking-bar-wrap {
                flex: 1;
                min-width: 30px;
            }
            .ranking-name {
                font-size: 0.82rem;
            }
            .ranking-rank {
                width: 24px;
                font-size: 0.9rem;
            }
            .ranking-flag {
                font-size: 1.2rem;
                width: 28px;
            }
            .ranking-score {
                width: 36px;
                font-size: 0.82rem;
            }
        }

        /* ========== INSIGHT BLOCK ========== */
        .insight-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .insight-img {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .insight-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .insight-text h3 {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .insight-text p {
            color: var(--text-light);
            line-height: 1.8;
            margin-bottom: 8px;
        }
        .insight-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 16px;
        }
        .insight-tag {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 16px;
            font-size: 0.82rem;
            font-weight: 500;
            background: var(--bg-light);
            color: var(--primary);
            letter-spacing: 0.02em;
            transition: all var(--transition);
        }
        .insight-tag:hover {
            background: var(--accent);
            color: #fff;
        }
        @media (max-width: 768px) {
            .insight-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .insight-text h3 {
                font-size: 1.25rem;
            }
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: var(--primary);
            background-image: url('assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            padding: 70px 0;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 25, 45, 0.85);
            z-index: 1;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 2;
            color: #fff;
        }
        .cta-section h3 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            margin-bottom: 10px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
        }
        .btn-cta {
            display: inline-block;
            padding: 14px 36px;
            border-radius: 28px;
            font-size: 1.05rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            background: var(--accent);
            color: #fff !important;
            transition: all var(--transition);
            box-shadow: var(--shadow);
        }
        .btn-cta:hover {
            background: #b8903a;
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h3 {
                font-size: 1.5rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
            .btn-cta {
                padding: 12px 28px;
                font-size: 0.95rem;
            }
        }

        /* ========== FAQ ACCORDION ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            margin-bottom: 12px;
            box-shadow: var(--shadow-xs);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
            background: none;
            border: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            letter-spacing: 0.015em;
            transition: background var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            background: var(--bg-light);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition);
            font-size: 1rem;
            color: var(--accent);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 22px;
            font-size: 0.93rem;
            color: var(--text-light);
            line-height: 1.8;
            letter-spacing: 0.015em;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 22px 18px;
        }
        @media (max-width: 640px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-answer {
                padding: 0 16px;
                font-size: 0.85rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 14px;
            }
        }

        /* ========== FOOTER ========== */
        .footer {
            background: var(--bg-dark);
            color: var(--text-on-dark);
            padding: 48px 0 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }
        .footer p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            margin: 0;
        }
        .footer-links h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }
        .footer-links a {
            display: block;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.6);
            padding: 4px 0;
            transition: color var(--transition);
            letter-spacing: 0.015em;
        }
        .footer-links a:hover {
            color: var(--accent-light);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: 0.02em;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer {
                padding: 32px 0 16px;
            }
        }

        /* ========== MISC ========== */
        .text-center {
            text-align: center;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mt-3 {
            margin-top: 24px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .mb-3 {
            margin-bottom: 24px;
        }
        .divider {
            height: 1px;
            background: var(--border);
            margin: 48px 0;
        }
        @media (max-width: 768px) {
            .divider {
                margin: 28px 0;
            }
        }

        /* Foundation overrides */
        .grid-container {
            max-width: var(--max-width);
        }
        .button {
            border-radius: var(--radius) !important;
            font-family: var(--font-body) !important;
            letter-spacing: 0.02em !important;
            transition: all var(--transition) !important;
        }

/* roulang page: category4 */
:root {
            --color-primary: #0f1f3d;
            --color-primary-light: #1a3059;
            --color-accent: #c8963e;
            --color-accent-light: #d4a853;
            --color-accent-glow: #e8c97a;
            --color-bg: #ffffff;
            --color-bg-alt: #f6f7f9;
            --color-bg-card: #ffffff;
            --color-bg-dark: #0a1525;
            --color-text: #1c1c1c;
            --color-text-strong: #0f1115;
            --color-text-muted: #6b7280;
            --color-text-light: #9ca3af;
            --color-border: #e5e7eb;
            --color-border-light: #f0f1f3;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-danger: #ef4444;
            --color-info: #3b82f6;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10), 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.12), 0 8px 20px rgba(0, 0, 0, 0.06);
            --shadow-accent: 0 6px 20px rgba(200, 150, 62, 0.25);
            --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
            --max-width: 1240px;
            --header-height: 64px;
            --section-gap: 72px;
            --section-gap-sm: 48px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.65;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            letter-spacing: 0.01em;
        }

        main {
            flex: 1;
            padding-top: var(--header-height);
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== HEADER / NAV ========== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--header-height);
            transition: box-shadow var(--transition-base);
        }
        .header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
        }
        .logo i {
            font-style: normal;
            font-size: 1.4rem;
        }
        .logo:hover {
            color: var(--color-accent);
        }
        .nav-links {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
            align-items: center;
        }
        .nav-links li a {
            display: block;
            padding: 8px 16px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-muted);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .nav-links li a:hover {
            color: var(--color-primary);
            background: #f3f4f6;
        }
        .nav-links li a.active {
            color: var(--color-accent);
            font-weight: 600;
            background: rgba(200, 150, 62, 0.08);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            font-size: 0.88rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
            border-radius: 24px;
            white-space: nowrap;
            transition: all var(--transition-base);
            box-shadow: 0 2px 10px rgba(200, 150, 62, 0.3);
            letter-spacing: 0.02em;
            border: none;
        }
        .nav-cta:hover {
            color: #fff;
            background: linear-gradient(135deg, #b8862d, #c8963e);
            box-shadow: 0 4px 18px rgba(200, 150, 62, 0.45);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--color-primary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            line-height: 1;
        }
        .mobile-toggle:hover {
            background: #f3f4f6;
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            padding: 80px 0 90px;
            background: var(--color-primary-light);
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 31, 61, 0.88) 0%, rgba(10, 21, 37, 0.78) 50%, rgba(15, 31, 61, 0.85) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 720px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            padding: 7px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            color: rgba(255, 255, 255, 0.95);
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            color: var(--color-accent-glow);
        }
        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            line-height: 1.2;
            margin-bottom: 18px;
            color: #fff;
        }
        .hero h1 span {
            color: var(--color-accent-glow);
        }
        .hero-desc {
            font-size: 1.08rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
            max-width: 580px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: 26px;
            border: none;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            cursor: pointer;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--color-accent), #d4a040);
            color: #fff;
            box-shadow: var(--shadow-accent);
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, #b8862d, #c8963e);
            box-shadow: 0 8px 26px rgba(200, 150, 62, 0.4);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.55);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 0.82rem;
            border-radius: 20px;
            font-weight: 500;
        }
        .btn-accent-sm {
            background: var(--color-accent);
            color: #fff;
            border: none;
            box-shadow: 0 2px 8px rgba(200, 150, 62, 0.3);
        }
        .btn-accent-sm:hover {
            background: #b8862d;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(200, 150, 62, 0.4);
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-sm {
            padding: var(--section-gap-sm) 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .section-header p {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-accent);
            margin-bottom: 8px;
        }

        /* ========== TOPIC CARDS ========== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .topic-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: #e0d5c0;
        }
        .topic-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .topic-card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .topic-card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--color-accent);
            background: rgba(200, 150, 62, 0.1);
            padding: 4px 12px;
            border-radius: 12px;
            margin-bottom: 10px;
            width: fit-content;
        }
        .topic-card h3 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 8px;
            line-height: 1.4;
            letter-spacing: 0.02em;
        }
        .topic-card p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            line-height: 1.55;
            margin-bottom: 16px;
            flex: 1;
        }
        .topic-card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.78rem;
            color: var(--color-text-light);
            padding-top: 14px;
            border-top: 1px solid var(--color-border-light);
        }
        .topic-card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ========== STATS ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-icon {
            font-size: 2rem;
            color: var(--color-accent);
            margin-bottom: 10px;
        }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            line-height: 1;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        /* ========== LEVEL SYSTEM ========== */
        .level-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .level-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .level-card.featured {
            border-color: var(--color-accent);
            box-shadow: var(--shadow-md);
            background: linear-gradient(180deg, #fffef9 0%, #ffffff 100%);
        }
        .level-card.featured::before {
            content: '热门';
            position: absolute;
            top: 14px;
            right: 14px;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 10px;
            letter-spacing: 0.04em;
        }
        .level-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .level-icon {
            font-size: 2.6rem;
            margin-bottom: 14px;
            color: var(--color-accent);
        }
        .level-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 6px;
            letter-spacing: 0.02em;
        }
        .level-card .level-badge {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(200, 150, 62, 0.1);
            padding: 5px 14px;
            border-radius: 14px;
            margin-bottom: 10px;
        }
        .level-card p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            line-height: 1.55;
            margin: 0;
        }

        /* ========== USER SHOWCASE ========== */
        .user-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .user-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 24px 18px;
            text-align: center;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .user-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .user-avatar {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            object-fit: cover;
            margin: 0 auto 12px;
            border: 3px solid var(--color-border-light);
        }
        .user-card h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 4px;
        }
        .user-card .user-role {
            font-size: 0.78rem;
            color: var(--color-accent);
            font-weight: 500;
            margin-bottom: 6px;
        }
        .user-card .user-stats {
            font-size: 0.75rem;
            color: var(--color-text-light);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            border-color: #d0ccc0;
        }
        .faq-question {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-accent);
        }
        .faq-question i {
            transition: transform var(--transition-base);
            color: var(--color-text-muted);
            font-size: 0.85rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-base);
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--color-primary);
            background-image: url('assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 70px 0;
            text-align: center;
            color: #fff;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 21, 37, 0.82);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            margin-bottom: 12px;
            color: #fff;
        }
        .cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }
        .cta-section .btn-primary {
            font-size: 1rem;
            padding: 15px 36px;
            border-radius: 28px;
        }

        /* ========== FOOTER ========== */
        .footer {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 50px 0 0;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }
        .footer p {
            font-size: 0.88rem;
            line-height: 1.6;
            margin: 0;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-links h4 {
            font-size: 0.85rem;
            font-weight: 600;
            color: #fff;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 14px;
        }
        .footer-links a {
            display: block;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.55);
            padding: 5px 0;
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--color-accent-glow);
        }
        .footer-bottom {
            text-align: center;
            padding: 18px 0;
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.35);
            letter-spacing: 0.02em;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .level-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .user-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero h1 {
                font-size: 2.3rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 12px 20px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                gap: 0;
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                padding: 12px 8px;
                font-size: 0.95rem;
                border-radius: 0;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-cta {
                font-size: 0.82rem;
                padding: 8px 16px;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .level-grid {
                grid-template-columns: 1fr;
            }
            .user-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .section {
                padding: 44px 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .hero {
                padding: 60px 0 70px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .nav-bar {
                padding: 0 14px;
            }
            .logo {
                font-size: 1.05rem;
            }
            .hero h1 {
                font-size: 1.55rem;
            }
            .hero-desc {
                font-size: 0.88rem;
            }
            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .btn {
                padding: 11px 22px;
                font-size: 0.88rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .user-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .topic-card-img {
                height: 160px;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .section-header h2 {
                font-size: 1.35rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 16px 18px;
            }
            .faq-answer-inner {
                padding: 0 18px 16px;
                font-size: 0.82rem;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #1a3c5e;
            --color-primary-dark: #0f2840;
            --color-accent: #c8963e;
            --color-accent-hover: #b8862d;
            --color-accent-light: #f5e6cc;
            --color-bg: #f8f7f4;
            --color-white: #ffffff;
            --color-text: #1e1e1e;
            --color-text-weak: #5c5c5c;
            --color-text-light: #7a7a7a;
            --color-border: #e0dcd4;
            --color-border-light: #ece8df;
            --color-card-bg: #ffffff;
            --color-dark-bg: #121e2d;
            --color-dark-bg2: #0d1723;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.14);
            --shadow-accent: 0 4px 18px rgba(200, 150, 62, 0.25);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --max-width: 1200px;
            --header-height: 68px;
            --section-gap: 72px;
            --section-gap-sm: 48px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 3px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }
        input {
            font-family: inherit;
        }
        ul {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: var(--color-text);
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ========== HEADER / NAV ========== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            height: var(--header-height);
        }
        .nav-bar {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 24px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 9px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: 0.02em;
            flex-shrink: 0;
            transition: color var(--transition-fast);
        }
        .logo i {
            font-style: normal;
            font-size: 1.45rem;
        }
        .logo:hover {
            color: var(--color-accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }
        .nav-links a {
            display: inline-block;
            padding: 9px 16px;
            border-radius: 7px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-weak);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            background: #f3f1eb;
        }
        .nav-links a.active {
            color: var(--color-white);
            background: var(--color-primary);
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }
        .nav-links a.active:hover {
            background: var(--color-primary-dark);
            color: var(--color-white);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: 25px;
            font-size: 0.93rem;
            font-weight: 600;
            background: var(--color-accent);
            color: #fff;
            white-space: nowrap;
            flex-shrink: 0;
            transition: all var(--transition-base);
            box-shadow: var(--shadow-sm);
        }
        .nav-cta:hover {
            background: var(--color-accent-hover);
            color: #fff;
            box-shadow: var(--shadow-accent);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--color-primary);
            padding: 6px 10px;
            border-radius: 6px;
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }
        .mobile-toggle:hover {
            background: #f3f1eb;
        }

        @media (max-width: 1024px) {
            .nav-bar {
                padding: 0 20px;
                gap: 14px;
            }
            .nav-links a {
                padding: 8px 10px;
                font-size: 0.88rem;
            }
            .nav-cta {
                padding: 8px 14px;
                font-size: 0.85rem;
            }
            .logo {
                font-size: 1.2rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--color-white);
                flex-direction: column;
                gap: 2px;
                padding: 12px 16px;
                border-bottom: 2px solid var(--color-border);
                box-shadow: var(--shadow-lg);
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                text-align: center;
                padding: 13px 16px;
                font-size: 1rem;
                border-radius: 8px;
            }
            .nav-cta {
                font-size: 0.82rem;
                padding: 7px 12px;
            }
            .mobile-toggle {
                display: block;
            }
        }
        @media (max-width: 520px) {
            .nav-cta {
                font-size: 0.76rem;
                padding: 6px 10px;
                gap: 3px;
            }
            .logo {
                font-size: 1.08rem;
                gap: 5px;
            }
            .logo i {
                font-size: 1.2rem;
            }
            .nav-bar {
                padding: 0 10px;
                gap: 8px;
            }
        }

        /* ========== HERO ========== */
        .hero-banner {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: url('assets/images/backpic/back-2.webp') center / cover no-repeat;
            background-position: center 35%;
            overflow: hidden;
        }
        .hero-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 28, 48, 0.82) 0%, rgba(18, 30, 45, 0.88) 60%, rgba(10, 20, 35, 0.94) 100%);
            z-index: 1;
        }
        .hero-banner .hero-content {
            position: relative;
            z-index: 2;
            max-width: 750px;
            padding: 48px 28px;
            color: #fff;
        }
        .hero-banner .hero-badge {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 18px;
            letter-spacing: 0.04em;
        }
        .hero-banner h1 {
            font-size: 2.6rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
            line-height: 1.25;
        }
        .hero-banner .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.65;
            max-width: 600px;
            margin: 0 auto 10px;
        }
        @media (max-width: 768px) {
            .hero-banner {
                min-height: 320px;
            }
            .hero-banner h1 {
                font-size: 1.8rem;
            }
            .hero-banner .hero-subtitle {
                font-size: 0.95rem;
            }
            .hero-banner .hero-content {
                padding: 36px 16px;
            }
        }
        @media (max-width: 520px) {
            .hero-banner {
                min-height: 260px;
            }
            .hero-banner h1 {
                font-size: 1.45rem;
            }
            .hero-banner .hero-subtitle {
                font-size: 0.85rem;
            }
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-sm {
            padding: var(--section-gap-sm) 0;
        }
        .section-dark {
            background: var(--color-dark-bg);
            color: #e0e0e0;
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark h4 {
            color: #fff;
        }
        .section-accent-light {
            background: var(--color-accent-light);
        }
        .section-header {
            text-align: center;
            margin-bottom: 42px;
        }
        .section-header h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .section-header .section-subtitle {
            font-size: 1.02rem;
            color: var(--color-text-weak);
            max-width: 560px;
            margin: 0 auto;
        }
        .section-dark .section-header h2 {
            color: #fff;
        }
        .section-dark .section-header .section-subtitle {
            color: #c0c0c0;
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--section-gap-sm) 0;
            }
            .section-sm {
                padding: 36px 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .section-header .section-subtitle {
                font-size: 0.9rem;
            }
        }

        /* ========== CARDS ========== */
        .card {
            background: var(--color-card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: all var(--transition-base);
            height: 100%;
            display: flex;
            flex-direction: column;
            border: 1px solid var(--color-border-light);
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-accent);
        }
        .card-image {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border-radius: 0;
        }
        .card-body {
            padding: 22px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-body h3 {
            font-size: 1.18rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .card-body p {
            font-size: 0.93rem;
            color: var(--color-text-weak);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 12px;
        }
        .card-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 14px;
            background: var(--color-accent-light);
            color: #8b6914;
            align-self: flex-start;
            letter-spacing: 0.03em;
        }
        .card-icon {
            font-size: 2.2rem;
            color: var(--color-accent);
            margin-bottom: 10px;
        }

        /* ========== BUTTONS ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 7px;
            padding: 12px 26px;
            border-radius: 25px;
            font-size: 0.95rem;
            font-weight: 600;
            transition: all var(--transition-base);
            letter-spacing: 0.02em;
            cursor: pointer;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: var(--shadow-md);
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-accent {
            background: var(--color-accent);
            color: #fff;
            box-shadow: var(--shadow-sm);
        }
        .btn-accent:hover {
            background: var(--color-accent-hover);
            box-shadow: var(--shadow-accent);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .btn-outline-light:hover {
            background: #fff;
            color: var(--color-primary);
            border-color: #fff;
            transform: translateY(-2px);
        }
        @media (max-width: 520px) {
            .btn {
                padding: 10px 20px;
                font-size: 0.88rem;
                border-radius: 22px;
            }
        }

        /* ========== DEEP-DIVE BLOCK ========== */
        .deep-dive {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .deep-dive.reverse {
            direction: rtl;
        }
        .deep-dive.reverse>* {
            direction: ltr;
        }
        .deep-dive .deep-text h3 {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 14px;
        }
        .deep-dive .deep-text p {
            font-size: 1rem;
            color: var(--color-text-weak);
            line-height: 1.75;
            margin-bottom: 10px;
        }
        .deep-dive .deep-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .deep-dive .deep-image img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
            border-radius: var(--radius-lg);
        }
        @media (max-width: 768px) {
            .deep-dive {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .deep-dive .deep-text h3 {
                font-size: 1.3rem;
            }
            .deep-dive .deep-image {
                order: -1;
            }
        }

        /* ========== TIP CARDS ========== */
        .tip-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-md);
            border-left: 5px solid var(--color-accent);
            transition: all var(--transition-base);
            height: 100%;
        }
        .tip-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-left-color: var(--color-primary);
        }
        .tip-card .tip-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 14px;
        }
        .tip-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .tip-card p {
            font-size: 0.92rem;
            color: var(--color-text-weak);
            line-height: 1.65;
        }

        /* ========== STATS ROW ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            padding: 28px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.12);
            transition: all var(--transition-base);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--color-accent);
        }
        .stat-item .stat-num {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-accent);
            line-height: 1;
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: #c0c0c0;
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-num {
                font-size: 2rem;
            }
        }
        @media (max-width: 520px) {
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 10px;
            }
            .stat-item .stat-num {
                font-size: 1.6rem;
            }
            .stat-item .stat-label {
                font-size: 0.8rem;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: var(--color-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-border);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 1.02rem;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-white);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: all var(--transition-fast);
            border-radius: var(--radius-md);
        }
        .faq-question:hover {
            background: #faf9f6;
        }
        .faq-question .faq-icon {
            font-size: 1.1rem;
            color: var(--color-accent);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
        }
        .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 0.93rem;
            color: var(--color-text-weak);
            line-height: 1.7;
        }
        @media (max-width: 520px) {
            .faq-question {
                font-size: 0.93rem;
                padding: 14px 16px;
            }
            .faq-answer-inner {
                font-size: 0.85rem;
                padding: 0 16px 16px;
            }
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary) 0%, #0f2840 50%, #0a1a2e 100%);
            color: #fff;
            text-align: center;
            border-radius: var(--radius-xl);
            padding: 52px 32px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 200px;
            height: 200px;
            background: var(--color-accent);
            opacity: 0.08;
            border-radius: 50%;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -50px;
            left: -30px;
            width: 160px;
            height: 160px;
            background: var(--color-accent);
            opacity: 0.06;
            border-radius: 50%;
        }
        .cta-section>* {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .cta-section p {
            font-size: 1.02rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        @media (max-width: 520px) {
            .cta-section {
                padding: 36px 18px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .cta-section p {
                font-size: 0.9rem;
            }
        }

        /* ========== FOOTER ========== */
        .footer {
            background: var(--color-dark-bg2);
            color: #c0c0c0;
            padding: 48px 0 24px;
            border-top: 3px solid var(--color-accent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.03em;
        }
        .footer p {
            font-size: 0.9rem;
            line-height: 1.6;
            color: #a0a0a0;
        }
        .footer-links h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }
        .footer-links a {
            display: block;
            font-size: 0.88rem;
            color: #a0a0a0;
            padding: 5px 0;
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.82rem;
            color: #888;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer {
                padding: 36px 0 18px;
            }
        }

        /* ========== MISC ========== */
        .text-accent {
            color: var(--color-accent);
        }
        .text-primary {
            color: var(--color-primary);
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .text-center {
            text-align: center;
        }

        .divider-accent {
            width: 50px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px;
            margin: 0 auto 16px;
        }

        .highlight-box {
            background: var(--color-white);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            border-left: 4px solid var(--color-accent);
            font-size: 0.93rem;
            color: var(--color-text-weak);
            line-height: 1.65;
            margin: 16px 0;
        }