/* roulang page: index */
:root {
    --primary: #00E5A0;
    --primary-hover: #00E5A0;
    --secondary: #FF2D95;
    --purple: #B026FF;
    --bg: #0A0E14;
    --bg-secondary: #111720;
    --bg-card: #161E28;
    --bg-deep: #080C12;
    --text-main: #E8EDF2;
    --text-muted: #93A0AF;
    --text-dim: #586675;
    --border: rgba(255, 255, 255, 0.08);
    --radius-lg: 16px;
    --radius-md: 8px;
    --radius-sm: 6px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.45);
    --glow: 0 0 12px rgba(0, 229, 160, 0.35);
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    background: var(--bg);
    color: var(--text-main);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
  }

  a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
  }

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

  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
  }

  /* ========== BUTTONS ========== */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-md);
    padding: 12px 28px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.3s ease;
    outline: none;
    line-height: 1.4;
    white-space: nowrap;
  }
  .btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
  }
  .btn-primary {
    background: var(--primary);
    color: #0A0E14;
  }
  .btn-primary:hover {
    box-shadow: 0 0 18px rgba(0, 229, 160, 0.6);
    transform: translateY(-1px);
    color: #0A0E14;
  }
  .btn-primary:active {
    transform: translateY(1px);
    box-shadow: 0 0 8px rgba(0, 229, 160, 0.35);
  }
  .btn-outline {
    border: 1px solid var(--primary);
    color: var(--primary);
    background: transparent;
  }
  .btn-outline:hover {
    background: rgba(0, 229, 160, 0.1);
    box-shadow: 0 0 14px rgba(0, 229, 160, 0.2);
  }
  .btn-magenta {
    background: var(--secondary);
    color: #fff;
  }
  .btn-magenta:hover {
    box-shadow: 0 0 18px rgba(255, 45, 149, 0.6);
    transform: translateY(-1px);
  }
  .btn-lg {
    padding: 16px 48px;
    font-size: 17px;
    border-radius: 10px;
  }
  .btn-sm {
    padding: 8px 18px;
    font-size: 14px;
  }
  .btn-block {
    width: 100%;
  }
  .btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
  }

  /* ========== HEADER / NAV ========== */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 64px;
    background: rgba(10, 14, 20, 0.92);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid transparent;
    background-image: linear-gradient(90deg, transparent, #00E5A0, transparent);
    background-repeat: no-repeat;
    background-size: 100% 1px;
    background-position: bottom;
  }
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
  }
  .logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 22px;
    font-weight: 800;
    color: var(--text-main);
    text-shadow: 0 0 8px rgba(0, 229, 160, 0.6);
    transition: text-shadow 0.3s ease;
  }
  .logo:hover {
    text-shadow: 0 0 14px rgba(0, 229, 160, 0.9);
  }
  .logo .logo-icon {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: linear-gradient(135deg, var(--primary), var(--purple));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 900;
    color: #0A0E14;
  }
  .main-nav {
    display: flex;
    align-items: center;
    gap: 24px;
  }
  .main-nav a {
    position: relative;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-muted);
    padding: 6px 2px;
    transition: color 0.3s ease;
  }
  .main-nav a:hover {
    color: var(--primary);
  }
  .main-nav a.active {
    color: var(--primary);
    text-shadow: 0 0 8px rgba(0, 229, 160, 0.6);
  }
  .main-nav a.active::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -3px;
    height: 2px;
    background: var(--primary);
    box-shadow: 0 0 10px rgba(0, 229, 160, 0.5);
    border-radius: 2px;
  }
  .header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
  }
  .menu-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px 10px;
    color: var(--text-main);
    font-size: 20px;
    cursor: pointer;
    line-height: 1;
    transition: all 0.3s ease;
  }
  .menu-toggle:hover {
    border-color: var(--primary);
    color: var(--primary);
  }
  .mobile-menu {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    width: 100%;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px 24px;
    z-index: 999;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  }
  .mobile-menu.open {
    display: block;
  }
  .mobile-menu a {
    display: block;
    padding: 12px 8px;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-muted);
    border-bottom: 1px solid rgba(255,255,255,0.04);
    transition: color 0.3s ease, padding-left 0.3s ease;
  }
  .mobile-menu a:hover,
  .mobile-menu a.active {
    color: var(--primary);
    padding-left: 14px;
  }
  .mobile-menu .menu-close {
    text-align: right;
    color: var(--secondary);
    font-size: 14px;
    padding: 8px;
    cursor: pointer;
    border: none;
    background: transparent;
  }

  /* ========== HERO ========== */
  .hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
  }
  .hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.5;
    z-index: 0;
  }
  .hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(10,14,20,0.85) 0%, rgba(10,14,20,0.6) 50%, rgba(10,14,20,0.9) 100%);
    z-index: 1;
  }
  .hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
  }
  .hero h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-main);
    margin-bottom: 20px;
    letter-spacing: 1px;
    text-shadow: 0 0 20px rgba(0, 229, 160, 0.3);
  }
  .hero-sub {
    font-size: 18px;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 32px;
    max-width: 560px;
  }
  .hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 40px;
  }
  .hero-meta {
    display: flex;
    gap: 32px;
    border-top: 1px solid var(--border);
    padding-top: 24px;
    margin-top: 20px;
  }
  .hero-meta-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  .hero-meta-item .num {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
  }
  .hero-meta-item .label {
    font-size: 13px;
    color: var(--text-dim);
  }
  .scroll-down {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--primary);
    font-size: 24px;
    animation: bounce 2s infinite;
    z-index: 3;
    opacity: 0.8;
  }
  .scroll-down:hover {
    opacity: 1;
  }
  @keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
  }

  /* ========== SECTIONS ========== */
  .section {
    padding: 80px 0;
  }
  .section-alt {
    background: var(--bg-secondary);
  }
  .section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 48px;
    flex-wrap: wrap;
  }
  .section-head h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.3;
  }
  .section-head .section-sub {
    color: var(--text-muted);
    font-size: 15px;
    max-width: 480px;
  }
  .section-kicker {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
  }

  /* ========== LOGIN PANEL ========== */
  .login-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
    box-shadow: var(--shadow);
  }
  .login-panel-label {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-main);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .login-panel-label::before {
    content: '';
    width: 4px;
    height: 24px;
    background: var(--primary);
    border-radius: 2px;
    box-shadow: 0 0 8px rgba(0,229,160,0.6);
  }
  .login-form {
    display: flex;
    flex: 1;
    gap: 12px;
    flex-wrap: wrap;
  }
  .login-form input {
    flex: 1;
    min-width: 160px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 16px;
    color: var(--text-main);
    font-size: 14px;
    outline: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
  }
  .login-form input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.1);
  }
  .login-form input::placeholder {
    color: var(--text-dim);
  }
  .login-links {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 14px;
  }
  .login-links a {
    color: var(--text-muted);
  }
  .login-links a:hover {
    color: var(--primary);
  }
  .login-links .register-link {
    color: var(--secondary);
    font-weight: 500;
  }
  .login-links .register-link:hover {
    text-shadow: 0 0 8px rgba(255,45,149,0.5);
  }

  /* ========== TIMELINE ========== */
  .timeline {
    position: relative;
    padding-left: 32px;
  }
  .timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), var(--secondary));
    opacity: 0.3;
  }
  .timeline-item {
    position: relative;
    padding-bottom: 32px;
    padding-left: 24px;
  }
  .timeline-item:last-child {
    padding-bottom: 0;
  }
  .timeline-item::before {
    content: '';
    position: absolute;
    left: -27px;
    top: 6px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 8px rgba(0, 229, 160, 0.5);
    border: 3px solid var(--secondary);
    background-clip: padding-box;
  }
  .timeline-time {
    font-family: 'SF Mono', 'Menlo', 'Consolas', monospace;
    font-size: 13px;
    color: var(--primary);
    margin-bottom: 4px;
    letter-spacing: 0.5px;
  }
  .timeline-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 4px;
  }
  .timeline-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
    max-width: 560px;
  }

  /* ========== FEATURES ========== */
  .features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
  }
  .feature-card:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 24px rgba(0, 229, 160, 0.08);
    transform: translateY(-2px);
  }
  .feature-card.large {
    grid-row: span 2;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 360px;
    background: linear-gradient(135deg, rgba(22,30,40,0.9), rgba(22,30,40,0.4));
  }
  .feature-card .feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(0, 229, 160, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: 20px;
    color: var(--primary);
  }
  .feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 8px;
  }
  .feature-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
  }
  .feature-card .feature-tag {
    display: inline-block;
    background: rgba(176, 38, 255, 0.15);
    color: var(--purple);
    font-size: 12px;
    font-weight: 500;
    border-radius: 999px;
    padding: 3px 10px;
    margin-top: 14px;
  }
  .feature-card .cover-img {
    width: 100%;
    height: 140px;
    border-radius: 10px;
    object-fit: cover;
    margin-top: 16px;
    opacity: 0.9;
  }

  /* ========== PRICING ========== */
  .pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
  }
  .pricing-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    position: relative;
    transition: all 0.4s ease;
  }
  .pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
  }
  .pricing-card.featured {
    border: 1px solid var(--primary);
    box-shadow: 0 0 24px rgba(0, 229, 160, 0.1);
    background: linear-gradient(180deg, rgba(22,30,40,0.9), rgba(22,30,40,0.7));
  }
  .pricing-card .recommend-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--secondary);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 16px;
    border-radius: 999px;
    box-shadow: 0 0 12px rgba(255, 45, 149, 0.4);
  }
  .pricing-card .pricing-top {
    text-align: center;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 24px;
  }
  .pricing-card .plan-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 4px;
  }
  .pricing-card .plan-price {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
  }
  .pricing-card .plan-price small {
    font-size: 14px;
    font-weight: 400;
    color: var(--text-dim);
  }
  .pricing-list {
    list-style: none;
    margin-bottom: 28px;
  }
  .pricing-list li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 14px;
    color: var(--text-muted);
    padding: 6px 0;
    line-height: 1.5;
  }
  .pricing-list li::before {
    content: '✓';
    color: var(--primary);
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 1px;
  }
  .pricing-card.featured .pricing-list li::before {
    color: var(--secondary);
  }
  .pricing-card .price-line-top {
    height: 4px;
    border-radius: 4px;
    margin-bottom: 20px;
    background: linear-gradient(90deg, var(--secondary), var(--purple));
  }
  .pricing-card.featured .price-line-top {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
  }

  /* ========== NEWS ========== */
  .news-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 24px;
    margin-top: 40px;
  }
  .news-feature {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: border-color 0.3s ease, transform 0.3s ease;
  }
  .news-feature:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
  }
  .news-feature .news-cover {
    width: 100%;
    height: 240px;
    object-fit: cover;
  }
  .news-feature .news-body {
    padding: 24px;
    flex: 1;
  }
  .news-feature .news-category {
    display: inline-block;
    background: rgba(0, 229, 160, 0.1);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    border-radius: 999px;
    padding: 2px 12px;
    margin-bottom: 12px;
  }
  .news-feature h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 8px;
    line-height: 1.5;
  }
  .news-feature p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
  }
  .news-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    font-size: 13px;
    color: var(--text-dim);
  }
  .news-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }
  .news-list-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    gap: 16px;
    align-items: center;
    transition: all 0.3s ease;
  }
  .news-list-item:hover {
    border-color: var(--primary);
    background: var(--bg-card);
  }
  .news-list-item .thumb {
    width: 72px;
    height: 72px;
    border-radius: 8px;
    object-fit: cover;
    flex-shrink: 0;
  }
  .news-list-item .content {
    flex: 1;
    min-width: 0;
  }
  .news-list-item h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
    line-height: 1.4;
    margin-bottom: 6px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .news-list-item .content-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-dim);
  }
  .news-list-item .content-meta .badge {
    background: rgba(176, 38, 255, 0.15);
    color: var(--purple);
    padding: 1px 8px;
    border-radius: 999px;
    font-size: 12px;
  }
  .news-empty {
    grid-column: 1 / -1;
    background: var(--bg-secondary);
    border: 2px dashed rgba(255,255,255,0.12);
    border-radius: 12px;
    padding: 64px 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 16px;
  }
  .news-empty::before {
    content: '📋';
    display: block;
    font-size: 36px;
    margin-bottom: 12px;
    color: var(--primary);
  }

  /* ========== CTA ========== */
  .cta-section {
    position: relative;
    padding: 100px 0;
    background: var(--bg-secondary);
    overflow: hidden;
    border-radius: 24px;
    margin: 0 24px;
    background-image: url('/assets/images/backpic/back-2.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
  }
  .cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(10,14,20,0.92), rgba(10,14,20,0.7));
  }
  .cta-inner {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
  }
  .cta-inner h2 {
    font-size: 34px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 16px;
  }
  .cta-inner p {
    font-size: 16px;
    color: var(--text-muted);
    margin-bottom: 32px;
  }

  /* ========== FAQ ========== */
  .faq-list {
    max-width: 800px;
    margin: 0 auto;
  }
  .faq-item {
    background: var(--bg-secondary);
    border-left: 2px solid var(--primary);
    border-radius: 8px;
    margin-bottom: 16px;
    overflow: hidden;
    transition: all 0.3s ease;
  }
  .faq-item.open {
    background: var(--bg-card);
  }
  .faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    user-select: none;
    transition: color 0.3s ease;
    background: transparent;
    border: none;
    text-align: left;
    width: 100%;
  }
  .faq-question:hover {
    color: var(--primary);
  }
  .faq-question .faq-icon {
    font-size: 22px;
    font-weight: 400;
    color: var(--text-dim);
    transition: transform 0.3s ease, color 0.3s ease;
    min-width: 24px;
    text-align: center;
  }
  .faq-item.open .faq-question .faq-icon {
    transform: rotate(45deg);
    color: var(--secondary);
  }
  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    padding: 0 24px;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.7;
  }
  .faq-item.open .faq-answer {
    max-height: 200px;
    padding-bottom: 20px;
  }

  /* ========== FOOTER ========== */
  .site-footer {
    background: var(--bg-deep);
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 60px 0 24px;
    margin-top: 80px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
  }
  .footer-brand .logo {
    margin-bottom: 16px;
  }
  .footer-brand p {
    font-size: 14px;
    color: var(--text-muted);
    max-width: 320px;
    line-height: 1.7;
  }
  .footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 16px;
  }
  .footer-col a {
    display: block;
    font-size: 14px;
    color: var(--text-muted);
    padding: 4px 0;
    transition: color 0.3s ease;
  }
  .footer-col a:hover {
    color: var(--primary);
  }
  .footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 24px;
    text-align: center;
    font-size: 13px;
    color: var(--text-dim);
  }

  /* ========== RESPONSIVE ========== */
  @media (max-width: 1024px) {
    .pricing-grid {
      grid-template-columns: 1fr 1fr;
    }
    .pricing-card.featured {
      order: -1;
      grid-column: 1 / -1;
    }
    .news-grid {
      grid-template-columns: 1fr;
    }
    .features-grid {
      grid-template-columns: 1fr 1fr;
    }
  }

  @media (max-width: 768px) {
    body {
      font-size: 15px;
    }
    .container {
      padding: 0 16px;
    }
    .section {
      padding: 48px 0;
    }
    .section-head h2 {
      font-size: 26px;
    }
    .hero {
      padding: 100px 0 60px;
      min-height: auto;
    }
    .hero h1 {
      font-size: 30px;
    }
    .hero-sub {
      font-size: 16px;
    }
    .hero-meta {
      flex-wrap: wrap;
      gap: 16px;
    }
    .main-nav {
      display: none;
    }
    .header-actions .btn-header {
      display: none;
    }
    .menu-toggle {
      display: block;
    }
    .login-panel {
      flex-direction: column;
      padding: 24px;
    }
    .login-form {
      width: 100%;
    }
    .login-form input {
      min-width: 100%;
    }
    .login-links {
      width: 100%;
      justify-content: space-between;
    }
    .features-grid {
      grid-template-columns: 1fr;
    }
    .feature-card.large {
      grid-row: auto;
      min-height: auto;
    }
    .pricing-grid {
      grid-template-columns: 1fr;
    }
    .pricing-card.featured {
      grid-column: auto;
      order: 0;
    }
    .timeline {
      padding-left: 24px;
    }
    .footer-grid {
      grid-template-columns: 1fr;
      gap: 32px;
    }
    .cta-section {
      margin: 0 16px;
      padding: 60px 24px;
    }
    .cta-inner h2 {
      font-size: 26px;
    }
  }

  @media (max-width: 520px) {
    .hero h1 {
      font-size: 28px;
      line-height: 1.25;
    }
    .hero-sub {
      font-size: 15px;
    }
    .hero-actions .btn {
      width: 100%;
    }
    .section-head {
      flex-direction: column;
      align-items: flex-start;
    }
    .btn-lg {
      width: 100%;
    }
  }

/* roulang page: category1 */
:root {
            --primary: #00E5A0;
            --secondary: #FF2D95;
            --accent: #B026FF;
            --bg-dark: #0A0E14;
            --bg-secondary: #111720;
            --bg-card: #161E28;
            --text-primary: #E8EDF2;
            --text-secondary: #93A0AF;
            --text-muted: #586675;
            --border-color: rgba(255, 255, 255, 0.08);
            --radius-lg: 16px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --radius-pill: 999px;
            --shadow-standard: 0 4px 20px rgba(0, 0, 0, 0.45);
            --glow-primary: 0 0 12px rgba(0, 229, 160, 0.35);
            --glow-secondary: 0 0 12px rgba(255, 45, 149, 0.35);
            --font-main: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Liberation Mono', monospace;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }
        body {
            font-family: var(--font-main);
            background: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .25s ease, background .25s ease, box-shadow .25s ease, transform .25s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #0A0E14;
            font-weight: 600;
            font-size: 15px;
            border: 1px solid transparent;
            border-radius: var(--radius-md);
            padding: 12px 32px;
            cursor: pointer;
            transition: box-shadow .3s ease, transform .3s ease, background .3s ease;
        }
        .btn-primary:hover {
            box-shadow: 0 0 18px rgba(0, 229, 160, 0.6);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 8px rgba(0, 229, 160, 0.4);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            font-weight: 500;
            font-size: 15px;
            border-radius: var(--radius-md);
            padding: 12px 32px;
            cursor: pointer;
            transition: background .3s ease, box-shadow .3s ease, transform .3s ease;
        }
        .btn-outline:hover {
            background: rgba(0, 229, 160, 0.1);
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.25);
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-outline:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: var(--bg-dark);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            z-index: 1000;
        }
        .site-header::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
            pointer-events: none;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 24px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            text-shadow: 0 0 8px rgba(0, 229, 160, 0.6);
            line-height: 1;
            flex-shrink: 0;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #0A0E14;
            font-weight: 800;
            font-size: 18px;
            border-radius: 6px;
            text-shadow: none;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 24px;
            margin-left: auto;
        }
        .main-nav a {
            position: relative;
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 20px 0;
            transition: color .25s ease, text-shadow .25s ease;
        }
        .main-nav a:hover {
            color: var(--primary);
        }
        .main-nav a.active {
            color: var(--primary);
            text-shadow: 0 0 8px rgba(0, 229, 160, 0.4);
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--primary);
            box-shadow: 0 0 8px rgba(0, 229, 160, 0.6);
            border-radius: 2px 2px 0 0;
        }
        .btn-login {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: var(--radius-md);
            padding: 8px 22px;
            font-size: 14px;
            font-weight: 500;
            box-shadow: 0 0 8px rgba(0, 229, 160, 0.15);
            transition: box-shadow .3s ease, background .25s ease, transform .25s ease;
            flex-shrink: 0;
        }
        .btn-login:hover {
            box-shadow: 0 0 16px rgba(0, 229, 160, 0.4);
            background: rgba(0, 229, 160, 0.1);
            transform: translateY(-1px);
        }
        .btn-login:active {
            transform: translateY(0);
        }
        .btn-login:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle span {
            display: block;
            height: 2px;
            background: var(--text-secondary);
            border-radius: 2px;
            transition: background .25s, transform .3s, opacity .25s;
        }
        .nav-toggle:hover span {
            background: var(--primary);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
            background: var(--secondary);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
            background: var(--secondary);
        }
        .category-hero {
            position: relative;
            padding: 140px 0 80px;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .category-hero .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: .35;
            z-index: 0;
        }
        .category-hero .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg,
                    rgba(10, 14, 20, 0.7) 0%,
                    rgba(10, 14, 20, 0.55) 40%,
                    rgba(10, 14, 20, 0.85) 100%);
            z-index: 1;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--text-muted);
        }
        .breadcrumb .current {
            color: var(--primary);
        }
        .category-hero h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.5px;
            margin-bottom: 18px;
            color: var(--text-primary);
            text-shadow: 0 2px 24px rgba(0, 0, 0, 0.5);
        }
        .category-hero .hero-desc {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 680px;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .guide-section {
            padding: 80px 0;
            background: var(--bg-dark);
        }
        .section-header {
            margin-bottom: 48px;
            text-align: center;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .section-header p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-standard), 0 0 16px rgba(0, 229, 160, 0.12);
            border-color: rgba(0, 229, 160, 0.35);
        }
        .card-cover {
            position: relative;
            display: block;
            padding-top: 56.25%;
            overflow: hidden;
            background: var(--bg-secondary);
        }
        .card-cover img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .guide-card:hover .card-cover img {
            transform: scale(1.04);
        }
        .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            background: rgba(10, 14, 20, 0.75);
            border: 1px solid rgba(0, 229, 160, 0.4);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            border-radius: var(--radius-pill);
            backdrop-filter: blur(6px);
            z-index: 2;
        }
        .card-body {
            padding: 22px 22px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-body h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .card-body h3 a {
            color: inherit;
        }
        .card-body h3 a:hover {
            color: var(--primary);
        }
        .card-body p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 18px;
            flex: 1;
        }
        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 14px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .card-meta .read-more {
            color: var(--primary);
            font-weight: 500;
            transition: letter-spacing .2s;
        }
        .card-meta .read-more:hover {
            letter-spacing: 0.5px;
        }
        .pagination-wrap {
            padding: 20px 0 80px;
            background: var(--bg-dark);
        }
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .page-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 14px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: border-color .25s, color .25s, box-shadow .25s, background .25s;
        }
        .page-link:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 8px rgba(0, 229, 160, 0.2);
        }
        .page-link.active {
            background: var(--primary);
            color: #0A0E14;
            border-color: var(--primary);
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.3);
            font-weight: 600;
            cursor: default;
        }
        .page-link.arrow {
            min-width: auto;
            padding: 0 20px;
        }
        .related-section {
            padding: 80px 0;
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
        }
        .related-section .container {
            text-align: center;
        }
        .related-section h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 36px;
            color: var(--text-primary);
        }
        .related-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            max-width: 760px;
            margin: 0 auto;
        }
        .related-card {
            display: block;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            text-align: left;
            transition: transform .3s, box-shadow .3s, border-color .3s;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-standard), 0 0 16px rgba(0, 229, 160, 0.12);
            border-color: rgba(0, 229, 160, 0.3);
        }
        .related-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(0, 229, 160, 0.1);
            border: 1px solid rgba(0, 229, 160, 0.25);
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 18px;
        }
        .related-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .related-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .related-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 500;
            transition: letter-spacing .2s;
        }
        .related-card:hover .related-link {
            letter-spacing: 0.5px;
        }
        .site-footer {
            background: #080C12;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 16px;
            text-shadow: 0 0 8px rgba(0, 229, 160, 0.6);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 340px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-secondary);
            padding: 5px 0;
            transition: color .2s;
        }
        .footer-col a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: var(--text-muted);
        }
        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(10, 14, 20, 0.97);
                flex-direction: column;
                align-items: center;
                gap: 0;
                padding: 20px 0 28px;
                border-bottom: 1px solid rgba(0, 229, 160, 0.3);
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.6);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: transform .35s ease, opacity .35s ease;
                z-index: 999;
                margin-left: 0;
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                font-size: 16px;
                padding: 14px 24px;
                width: 100%;
                text-align: center;
            }
            .main-nav a.active::after {
                bottom: 6px;
                left: 50%;
                right: auto;
                transform: translateX(-50%);
                width: 24px;
                height: 2px;
            }
            .btn-login {
                margin-left: auto;
            }
            .category-hero {
                padding: 110px 0 60px;
            }
            .category-hero h1 {
                font-size: 36px;
            }
            .category-hero .hero-desc {
                font-size: 15px;
            }
            .guide-section {
                padding: 60px 0;
            }
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-section {
                padding: 60px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-hero h1 {
                font-size: 28px;
                letter-spacing: -0.3px;
            }
            .category-hero .hero-desc {
                font-size: 14px;
                line-height: 1.7;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .section-header p {
                font-size: 14px;
            }
            .card-body h3 {
                font-size: 17px;
            }
            .card-meta {
                flex-direction: column;
                gap: 8px;
                align-items: flex-start;
            }
            .pagination {
                flex-wrap: wrap;
                gap: 6px;
            }
            .page-link {
                min-width: 36px;
                height: 36px;
                font-size: 13px;
            }
            .related-card {
                padding: 28px 22px;
            }
        }

/* roulang page: article */
:root {
  --primary: #00E5A0;
  --primary-rgb: 0, 229, 160;
  --secondary: #FF2D95;
  --secondary-rgb: 255, 45, 149;
  --accent: #B026FF;
  --bg-dark: #0A0E14;
  --bg-secondary: #111720;
  --bg-card: #161E28;
  --text-main: #E8EDF2;
  --text-secondary: #93A0AF;
  --text-muted: #586675;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --radius-lg: 16px;
  --radius-md: 8px;
  --radius-sm: 6px;
  --radius-pill: 999px;
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.45);
  --shadow-neon: 0 0 12px rgba(0, 229, 160, 0.35);
  --font-main: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 720px; margin: 0 auto; padding: 0 24px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid transparent;
  transition: all 0.3s ease;
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #0A0E14;
}
.btn-primary:hover {
  box-shadow: 0 0 18px rgba(var(--primary-rgb), 0.6);
  transform: translateY(-1px);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-outline {
  border: 1px solid var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  background: rgba(var(--primary-rgb), 0.1);
  box-shadow: 0 0 14px rgba(var(--primary-rgb), 0.3);
}
.btn-outline:active {
  transform: scale(0.98);
}
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-lg { padding: 16px 40px; font-size: 16px; border-radius: 10px; }
.btn-secondary-solid {
  background: var(--secondary);
  color: #fff;
}
.btn-secondary-solid:hover {
  box-shadow: 0 0 20px rgba(var(--secondary-rgb), 0.55);
  transform: translateY(-1px);
}

/* ===== 顶部导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 64px;
  background: rgba(10, 14, 20, 0.95);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.site-header::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0.55;
  pointer-events: none;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0.5px;
  text-shadow: 0 0 8px rgba(var(--primary-rgb), 0.6);
  transition: text-shadow 0.3s;
}
.logo:hover { text-shadow: 0 0 14px rgba(var(--primary-rgb), 0.8); }
.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: var(--bg-dark);
  border-radius: 8px;
  font-weight: 800;
  font-size: 18px;
  box-shadow: 0 0 12px rgba(var(--primary-rgb), 0.35);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}
.main-nav a {
  position: relative;
  padding: 8px 2px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.3s, text-shadow 0.3s;
}
.main-nav a:hover {
  color: var(--primary);
}
.main-nav a.active {
  color: var(--primary);
  text-shadow: 0 0 8px rgba(var(--primary-rgb), 0.6);
}
.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--primary);
  box-shadow: 0 0 8px rgba(var(--primary-rgb), 0.5);
  border-radius: 2px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 6px;
  border-radius: 6px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: all 0.3s;
}
.nav-toggle:hover span { background: var(--primary); }
.nav-toggle:focus { outline: 2px solid var(--primary); outline-offset: 2px; }
.mobile-nav {
  display: none;
  position: fixed;
  top: 64px;
  left: 0; right: 0;
  background: var(--bg-secondary);
  padding: 20px 24px 28px;
  flex-direction: column;
  gap: 8px;
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 99;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  padding: 13px 12px;
  border-radius: 8px;
  color: var(--text-main);
  font-size: 15px;
  font-weight: 500;
  border-left: 2px solid transparent;
  transition: all 0.3s;
}
.mobile-nav a:hover {
  background: rgba(var(--primary-rgb), 0.08);
  border-left-color: var(--primary);
  color: var(--primary);
}
.mobile-nav .btn { margin-top: 12px; }

/* ===== 文章头 ===== */
.article-hero {
  position: relative;
  padding: 140px 0 56px;
  background:
    linear-gradient(180deg, rgba(10, 14, 20, 0.92) 0%, rgba(10, 14, 20, 0.78) 100%),
    url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden;
}
.article-hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -60px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(176, 38, 255, 0.14), transparent 70%);
  pointer-events: none;
}
.article-hero::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -40px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(var(--primary-rgb), 0.1), transparent 70%);
  pointer-events: none;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 22px;
  position: relative;
  z-index: 1;
}
.breadcrumb a {
  color: var(--text-secondary);
  transition: color 0.3s;
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--text-muted); }
.breadcrumb .current { color: var(--primary); }
.article-cat {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(var(--secondary-rgb), 0.12);
  border: 1px solid rgba(var(--secondary-rgb), 0.3);
  color: var(--secondary);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}
.article-hero h1 {
  font-size: 44px;
  line-height: 1.25;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 26px;
  letter-spacing: 0.5px;
  position: relative;
  z-index: 1;
  max-width: 900px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
  font-size: 14px;
  color: var(--text-secondary);
  position: relative;
  z-index: 1;
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--text-muted);
}
.meta-item .meta-icon {
  font-size: 15px;
  opacity: 0.7;
}

/* ===== 正文阅读区 ===== */
.article-main {
  padding: 64px 0 72px;
  background: var(--bg-dark);
  position: relative;
}
.article-main::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 60px;
  background: linear-gradient(180deg, var(--primary), transparent);
  opacity: 0.4;
}
.article-body {
  font-size: 17px;
  line-height: 1.8;
  color: var(--text-main);
  word-wrap: break-word;
}
.article-body h2 {
  font-size: 26px;
  font-weight: 700;
  margin: 2em 0 0.8em;
  color: var(--text-main);
  padding-left: 16px;
  border-left: 3px solid var(--primary);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  margin: 1.8em 0 0.6em;
  color: #D5E8EF;
}
.article-body h4 {
  font-size: 17px;
  font-weight: 600;
  margin: 1.5em 0 0.5em;
  color: #C8D6E0;
}
.article-body p {
  margin: 0 0 1.5em;
  color: #B8C4D0;
}
.article-body a {
  color: var(--primary);
  border-bottom: 1px solid rgba(var(--primary-rgb), 0.3);
  transition: all 0.3s;
}
.article-body a:hover {
  border-bottom-color: var(--primary);
  text-shadow: 0 0 8px rgba(var(--primary-rgb), 0.4);
}
.article-body ul,
.article-body ol {
  margin: 0 0 1.5em;
  padding-left: 1.5em;
  color: #B8C4D0;
}
.article-body li { margin-bottom: 0.5em; }
.article-body li::marker { color: var(--primary); }
.article-body blockquote {
  margin: 1.8em 0;
  padding: 18px 24px;
  background: var(--bg-secondary);
  border-left: 3px solid var(--secondary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--text-secondary);
  font-style: normal;
}
.article-body blockquote p { margin: 0 0 0.8em; }
.article-body blockquote p:last-child { margin: 0; }
.article-body code {
  background: var(--bg-secondary);
  padding: 2px 8px;
  border-radius: 4px;
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 0.9em;
  color: var(--primary);
}
.article-body pre {
  background: var(--bg-secondary);
  padding: 22px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: 1.5em;
  border: 1px solid var(--border-subtle);
  line-height: 1.6;
}
.article-body pre code {
  background: none;
  padding: 0;
  color: var(--text-main);
}
.article-body img {
  border-radius: var(--radius-lg);
  margin: 1.8em auto;
  box-shadow: var(--shadow-card);
}
.article-body table {
  width: 100%;
  margin: 1.5em 0;
  border-collapse: collapse;
  font-size: 15px;
}
.article-body th,
.article-body td {
  border: 1px solid var(--border-subtle);
  padding: 12px 16px;
  text-align: left;
}
.article-body th {
  background: var(--bg-secondary);
  color: var(--text-main);
  font-weight: 600;
}
.article-body td { color: var(--text-secondary); }
.article-body hr {
  border: none;
  height: 1px;
  background: var(--border-subtle);
  margin: 2.5em 0;
}

/* ===== 内容未找到 ===== */
.not-found {
  text-align: center;
  padding: 80px 20px;
  background: var(--bg-card);
  border: 1px dashed rgba(var(--primary-rgb), 0.25);
  border-radius: var(--radius-lg);
}
.not-found-code {
  font-size: 64px;
  font-weight: 800;
  color: rgba(var(--primary-rgb), 0.25);
  line-height: 1;
  margin-bottom: 16px;
  font-family: 'SFMono-Regular', Consolas, monospace;
}
.not-found p {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

/* ===== 标签与分享 ===== */
.article-tag-share-wrap {
  padding: 0 0 56px;
  background: var(--bg-dark);
}
.article-tag-share {
  max-width: 720px;
  margin: 0 auto;
  padding: 28px 24px 0;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.tags-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag {
  display: inline-block;
  padding: 5px 14px;
  background: rgba(var(--primary-rgb), 0.08);
  border: 1px solid rgba(var(--primary-rgb), 0.2);
  color: var(--primary);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.3s;
}
.tag:hover {
  background: rgba(var(--primary-rgb), 0.15);
  border-color: rgba(var(--primary-rgb), 0.45);
}
.share-group {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13px;
  transition: all 0.3s;
}
.share-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 10px rgba(var(--primary-rgb), 0.2);
}
.share-btn:focus {
  outline: 2px solid rgba(var(--primary-rgb), 0.5);
  outline-offset: 2px;
}

/* ===== 相关推荐 ===== */
.related-section {
  padding: 64px 0 72px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
}
.section-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 40px;
  position: relative;
  display: inline-block;
}
.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), transparent);
  border-radius: 3px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  transition: all 0.35s ease;
}
.related-card:hover {
  transform: translateY(-6px);
  border-color: rgba(var(--primary-rgb), 0.4);
  box-shadow: 0 10px 36px rgba(0, 0, 0, 0.4), 0 0 14px rgba(var(--primary-rgb), 0.12);
}
.related-cover {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--bg-secondary);
  position: relative;
}
.related-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(10, 14, 20, 0.35) 100%);
  pointer-events: none;
}
.related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.related-card:hover .related-cover img {
  transform: scale(1.05);
}
.related-body {
  padding: 20px 24px 24px;
}
.related-body h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.3s;
}
.related-card:hover .related-body h3 { color: var(--primary); }
.related-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-date {
  font-size: 13px;
  color: var(--text-muted);
  font-family: 'SFMono-Regular', Consolas, monospace;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.related-date::before {
  content: '▧';
  font-size: 10px;
  color: var(--primary);
}

/* ===== 返回入口 ===== */
.back-section {
  padding: 52px 0;
  background: var(--bg-dark);
  border-top: 1px solid var(--border-subtle);
}
.back-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #080C12;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .logo {
  font-size: 22px;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 20px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  padding: 6px 0;
  transition: all 0.3s;
}
.footer-col a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .article-hero h1 { font-size: 36px; }
  .footer-grid { grid-template-columns: 1.2fr 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .header-actions .btn-outline { display: none; }
  .article-hero { padding: 120px 0 40px; }
  .article-hero h1 { font-size: 28px; }
  .article-body { font-size: 16px; }
  .article-body h2 { font-size: 22px; }
  .article-meta { gap: 16px; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .article-tag-share { flex-direction: column; align-items: flex-start; }
  .section-title { font-size: 24px; }
  .back-actions .btn { width: 100%; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .container-narrow { padding: 0 16px; }
  .article-tag-share { padding-left: 16px; padding-right: 16px; }
  .related-body { padding: 16px 18px 20px; }
  .article-hero h1 { font-size: 24px; letter-spacing: 0.3px; }
}

/* roulang page: category2 */
:root {
            --primary: #00E5A0;
            --secondary: #FF2D95;
            --purple: #B026FF;
            --bg: #0A0E14;
            --bg-2: #111720;
            --bg-3: #161E28;
            --text: #E8EDF2;
            --text-2: #93A0AF;
            --text-3: #586675;
            --border: rgba(255, 255, 255, 0.08);
            --radius-lg: 16px;
            --radius-md: 8px;
            --radius-sm: 6px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.45);
            --glow: 0 0 12px rgba(0, 229, 160, 0.35);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            padding-top: 64px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: #fff;
        }

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

        ul,
        ol {
            list-style: none;
        }

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: rgba(10, 14, 20, 0.96);
            backdrop-filter: blur(8px);
            z-index: 100;
            border-bottom: 1px solid transparent;
        }

        .site-header::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -1px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 32px;
        }

        .logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
            text-shadow: 0 0 8px rgba(0, 229, 160, 0.6);
            white-space: nowrap;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--primary);
            color: var(--bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 18px;
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.5);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 24px;
        }

        .main-nav a {
            color: var(--text-2);
            font-weight: 500;
            padding: 6px 2px;
            position: relative;
            transition: color .2s;
        }

        .main-nav a:hover {
            color: var(--primary);
        }

        .main-nav a.active {
            color: var(--primary);
            text-shadow: 0 0 8px rgba(0, 229, 160, 0.5);
        }

        .main-nav a.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -14px;
            height: 2px;
            background: var(--primary);
            box-shadow: 0 0 8px rgba(0, 229, 160, 0.6);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text);
            font-size: 24px;
            cursor: pointer;
            line-height: 1;
            padding: 4px;
        }

        .nav-toggle:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-md);
            padding: 10px 24px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all .25s ease;
            border: 1px solid transparent;
            text-align: center;
            line-height: 1.4;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn-primary {
            background: var(--primary);
            color: var(--bg);
        }

        .btn-primary:hover {
            color: var(--bg);
            box-shadow: 0 0 18px rgba(0, 229, 160, 0.6);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 8px rgba(0, 229, 160, 0.4);
        }

        .btn-outline {
            border-color: var(--primary);
            color: var(--primary);
            background: transparent;
        }

        .btn-outline:hover {
            background: rgba(0, 229, 160, 0.1);
            color: var(--primary);
        }

        .btn-lg {
            padding: 16px 42px;
            font-size: 17px;
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }

        /* ===== Category Hero ===== */
        .category-hero {
            padding: 96px 0 72px;
            position: relative;
            background:
                linear-gradient(135deg, rgba(10, 14, 20, 0.92), rgba(17, 23, 32, 0.78)),
                url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            border-bottom: 1px solid var(--border);
        }

        .breadcrumb {
            font-size: 14px;
            color: var(--text-3);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: var(--text-2);
        }

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

        .breadcrumb span {
            color: var(--text-3);
        }

        .category-hero h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .category-hero .lead {
            max-width: 640px;
            font-size: 17px;
            color: var(--text-2);
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Stats Bar ===== */
        .stats-bar {
            border-bottom: 1px solid var(--border);
            background: var(--bg-2);
        }

        .stats-inner {
            display: flex;
            gap: 56px;
            padding: 28px 0;
            flex-wrap: wrap;
        }

        .stat-num {
            font-size: 26px;
            font-weight: 800;
            color: var(--primary);
            font-family: 'Courier New', monospace;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-3);
            margin-top: 4px;
        }

        /* ===== Activity Section ===== */
        .activity-section {
            padding: 80px 0;
        }

        .content-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 320px;
            gap: 40px;
            align-items: start;
        }

        .section-head {
            margin-bottom: 36px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }

        .section-head p {
            color: var(--text-3);
            font-size: 15px;
        }

        /* ===== Offset Grid ===== */
        .offset-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .offset-grid>.activity-card:nth-child(even) {
            margin-top: 40px;
        }

        .activity-card {
            background: var(--bg-3);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all .3s ease;
        }

        .activity-card:hover {
            border-color: var(--primary);
            box-shadow: 0 0 16px rgba(0, 229, 160, 0.12);
            transform: translateY(-3px);
        }

        .card-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-2);
        }

        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 45, 149, 0.9);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            backdrop-filter: blur(4px);
        }

        .card-body {
            padding: 24px;
        }

        .card-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .card-body>p {
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.75;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-3);
        }

        .link-more {
            color: var(--primary);
            font-weight: 500;
            font-size: 14px;
        }

        .link-more:hover {
            text-shadow: 0 0 8px rgba(0, 229, 160, 0.5);
        }

        /* ===== Sidebar ===== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .side-card {
            background: var(--bg-3);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
        }

        .side-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 12px;
        }

        .side-card h3::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 32px;
            height: 2px;
            background: var(--primary);
            box-shadow: var(--glow);
        }

        .rank-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }

        .rank-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .rank-num {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: var(--bg-2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: var(--text-2);
            flex-shrink: 0;
            margin-top: 2px;
        }

        .rank-list li:nth-child(-n+3) .rank-num {
            background: var(--secondary);
            color: #fff;
            box-shadow: 0 0 8px rgba(255, 45, 149, 0.35);
        }

        .rank-list h4 {
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 2px;
            line-height: 1.4;
        }

        .rank-list p {
            font-size: 12px;
            color: var(--text-3);
        }

        .rec-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 10px;
        }

        .rec-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .rec-list a {
            color: var(--text);
            font-size: 14px;
            transition: color .2s;
        }

        .rec-list a:hover {
            color: var(--primary);
        }

        .rec-list span {
            font-size: 12px;
            color: var(--text-3);
            flex-shrink: 0;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 80px 0;
            position: relative;
            background:
                radial-gradient(circle at 30% 40%, rgba(0, 229, 160, 0.12), transparent 40%),
                radial-gradient(circle at 70% 60%, rgba(176, 38, 255, 0.10), transparent 35%),
                var(--bg-2);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .cta-inner {
            text-align: center;
            padding: 24px 0;
        }

        .cta-inner h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-inner p {
            color: var(--text-2);
            font-size: 16px;
            margin-bottom: 32px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--bg-2);
            border-left: 2px solid var(--primary);
            border-radius: 10px;
            overflow: hidden;
            transition: background .2s;
        }

        .faq-item:hover {
            background: var(--bg-3);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            padding: 18px 22px;
            color: var(--text);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: color .2s;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
            border-radius: 8px;
        }

        .faq-toggle {
            color: var(--primary);
            font-size: 22px;
            font-weight: 400;
            line-height: 1;
            transition: transform .25s ease;
        }

        .faq-item.open .faq-toggle {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 220px;
        }

        .faq-answer p {
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.8;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #080C12;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 60px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-3);
            line-height: 1.8;
            max-width: 380px;
        }

        .footer-col h4 {
            font-size: 15px;
            color: var(--text);
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-col a {
            display: block;
            color: var(--text-3);
            font-size: 14px;
            padding: 5px 0;
            transition: color .2s;
        }

        .footer-col a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: var(--text-3);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .content-layout {
                grid-template-columns: 1fr;
            }

            .sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }

            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--bg-2);
                flex-direction: column;
                padding: 28px 24px;
                gap: 20px;
                border-bottom: 1px solid var(--border);
                display: none;
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
            }

            .main-nav.open {
                display: flex;
            }

            .main-nav a.active::after {
                display: none;
            }

            .category-hero {
                padding: 72px 0 56px;
            }

            .category-hero h1 {
                font-size: 34px;
            }

            .category-hero .lead {
                font-size: 15px;
            }

            .stats-inner {
                gap: 32px;
            }

            .offset-grid {
                grid-template-columns: 1fr;
            }

            .offset-grid>.activity-card:nth-child(even) {
                margin-top: 0;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .cta-inner h2 {
                font-size: 28px;
            }

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

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

            .section-head h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }

            .container {
                padding: 0 18px;
            }

            .nav-actions .btn {
                display: none;
            }

            .logo {
                font-size: 19px;
            }

            .category-hero h1 {
                font-size: 28px;
            }

            .stats-inner {
                gap: 20px;
            }

            .stat-num {
                font-size: 22px;
            }

            .sidebar {
                grid-template-columns: 1fr;
            }

            .btn-lg {
                padding: 14px 30px;
                font-size: 16px;
                width: 100%;
            }

            .cta-inner .btn-lg {
                max-width: 280px;
            }
        }