:root {
      --primary-color: rgb(107,114,128);
      --primary-hover: #4b5563;
      --dark-color: #1f2937;
      --light-bg: #f9fafb;
      --card-bg: #ffffff;
      --text-main: #374151;
      --text-muted: #9ca3af;
      --border-color: #e5e7eb;
      --accent-color: #d97706;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    }
    * { margin: 0; padding: 0; box-sizing: border-box; }
    body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; background-color: var(--light-bg); color: var(--text-main); line-height: 1.6; }
    a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
    ul { list-style: none; }
    img { max-width: 100%; height: auto; }
    
    .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
    
    
    .header { background: var(--card-bg); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow-sm); }
    .header-container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
    .logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
    .logo img { display: block; height: 40px; width: auto; max-width: 160px; object-fit: contain; flex-shrink: 0; }
    .logo span { display: inline-block; font-size: 20px; font-weight: 800; line-height: 1; color: var(--dark-color); white-space: nowrap; }
    
    .nav-desktop { display: flex; gap: 24px; align-items: center; }
    .nav-desktop a { font-size: 15px; font-weight: 500; color: var(--text-main); padding: 8px 12px; border-radius: 6px; }
    .nav-desktop a:hover { color: var(--primary-color); background: #f3f4f6; }
    
    .header-actions { display: flex; align-items: center; gap: 16px; }
    .btn-primary-sm { background-color: var(--primary-color); color: #fff; padding: 8px 16px; border-radius: 6px; font-size: 14px; font-weight: 600; text-align: center; border: none; cursor: pointer; transition: background 0.3s; }
    .btn-primary-sm:hover { background-color: var(--primary-hover); color: #fff; }
    .menu-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 6px; padding: 4px; }
    .menu-toggle span { display: block; width: 24px; height: 2px; background: var(--dark-color); border-radius: 2px; transition: 0.3s; }
    
    
    .drawer-backdrop { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: rgba(0,0,0,0.5); z-index: 1010; opacity: 0; pointer-events: none; transition: opacity 0.3s ease; }
    .drawer-backdrop.active { opacity: 1; pointer-events: auto; }
    .drawer { position: fixed; top: 0; left: -280px; width: 280px; height: 100vh; background: var(--card-bg); z-index: 1020; transition: transform 0.3s ease; display: flex; flex-direction: column; box-shadow: var(--shadow-lg); }
    .drawer.active { transform: translateX(280px); }
    .drawer-header { display: flex; align-items: center; justify-content: space-between; padding: 20px; border-bottom: 1px solid var(--border-color); }
    .drawer-close { background: none; border: none; font-size: 28px; cursor: pointer; color: var(--text-muted); }
    .drawer-content { padding: 20px; flex-grow: 1; overflow-y: auto; }
    .nav-mobile { display: flex; flex-direction: column; gap: 16px; }
    .nav-mobile a { font-size: 16px; font-weight: 500; color: var(--text-main); padding: 10px; border-radius: 6px; }
    .nav-mobile a:hover { background: #f3f4f6; color: var(--primary-color); }
    .drawer-footer { padding: 20px; border-top: 1px solid var(--border-color); }
    .btn-primary { display: block; width: 100%; background: var(--primary-color); color: #fff; padding: 12px; text-align: center; border-radius: 8px; font-weight: 600; }
    .btn-primary:hover { background: var(--primary-hover); }
    
    
    .hero { background: linear-gradient(135deg, #1f2937 0%, #111827 100%); color: #ffffff; padding: 80px 0; overflow: hidden; position: relative; }
    .hero::before { content: ''; position: absolute; top: 0; right: 0; width: 50%; height: 100%; background: radial-gradient(circle, rgba(107,114,128,0.15) 0%, transparent 70%); pointer-events: none; }
    .hero-container { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
    .hero-content h1 { font-size: 40px; font-weight: 800; line-height: 1.2; margin-bottom: 20px; color: #ffffff; }
    .hero-content p { font-size: 18px; color: #9ca3af; margin-bottom: 32px; line-height: 1.7; }
    .hero-actions-group { display: flex; gap: 16px; }
    .btn-accent { background: var(--accent-color); color: #fff; padding: 14px 28px; border-radius: 8px; font-weight: 600; box-shadow: 0 4px 12px rgba(217,119,6,0.3); }
    .btn-accent:hover { background: #b45309; }
    .btn-outline { border: 2px solid #e5e7eb; color: #e5e7eb; padding: 12px 26px; border-radius: 8px; font-weight: 600; }
    .btn-outline:hover { background: rgba(255,255,255,0.1); color: #fff; }
    .hero-visual { display: flex; justify-content: center; position: relative; }
    .hero-chart-card { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); padding: 24px; border-radius: 16px; backdrop-filter: blur(8px); width: 100%; max-width: 460px; box-shadow: var(--shadow-lg); }
    .chart-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
    .chart-title { font-size: 16px; font-weight: 600; color: #f3f4f6; }
    .chart-badge { background: rgba(16,185,129,0.2); color: #10b981; padding: 4px 8px; border-radius: 4px; font-size: 12px; font-weight: bold; }
    .chart-bars { display: flex; align-items: flex-end; gap: 12px; height: 160px; padding-top: 20px; }
    .chart-bar { flex-grow: 1; background: var(--primary-color); border-radius: 4px; transition: height 1s; animation: growUp 1.5s ease-out forwards; }
    @keyframes growUp { from { height: 0; } to { height: var(--h); } }
    
    
    .stats { padding: 40px 0; background: var(--card-bg); border-bottom: 1px solid var(--border-color); margin-top: -30px; border-radius: 16px; box-shadow: var(--shadow-md); position: relative; z-index: 10; }
    .stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; text-align: center; }
    .stat-item h3 { font-size: 32px; font-weight: 800; color: var(--primary-color); margin-bottom: 8px; }
    .stat-item p { font-size: 14px; color: var(--text-muted); font-weight: 500; }
    
    
    .features { padding: 80px 0; }
    .section-title { text-align: center; margin-bottom: 48px; }
    .section-title h2 { font-size: 30px; font-weight: 800; color: var(--dark-color); margin-bottom: 12px; }
    .section-title p { color: var(--text-muted); font-size: 16px; max-width: 600px; margin: 0 auto; }
    .features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
    .feature-card { background: var(--card-bg); padding: 32px; border-radius: 12px; border: 1px solid var(--border-color); box-shadow: var(--shadow-sm); transition: transform 0.3s, box-shadow 0.3s; }
    .feature-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
    .feature-icon { width: 48px; height: 48px; background: rgba(107,114,128,0.1); border-radius: 10px; display: flex; align-items: center; justify-content: center; margin-bottom: 20px; color: var(--primary-color); }
    .feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; color: var(--dark-color); }
    .feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }
    
    
    .platforms { padding: 80px 0; background: #f3f4f6; }
    .platform-list { display: grid; grid-template-columns: 1fr; gap: 20px; }
    .platform-row { background: var(--card-bg); border-radius: 12px; padding: 24px; display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; align-items: center; gap: 20px; border: 1px solid var(--border-color); box-shadow: var(--shadow-sm); }
    .platform-info { display: flex; align-items: center; gap: 16px; }
    .platform-logo-box { width: 50px; height: 50px; background: #f9fafb; border-radius: 8px; border: 1px solid var(--border-color); display: flex; align-items: center; justify-content: center; font-weight: bold; color: var(--primary-color); }
    .platform-name h4 { font-size: 16px; font-weight: 700; color: var(--dark-color); }
    .platform-name p { font-size: 12px; color: var(--text-muted); }
    .platform-meta { font-size: 14px; }
    .platform-meta .label { display: block; font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
    .platform-meta .value { font-weight: 600; color: var(--dark-color); }
    .platform-rating { color: var(--accent-color); font-weight: bold; font-size: 16px; }
    .platform-action { text-align: right; }
    .btn-detail { background: #f3f4f6; color: var(--text-main); padding: 10px 20px; border-radius: 6px; font-size: 14px; font-weight: 600; display: inline-block; }
    .btn-detail:hover { background: var(--primary-color); color: #fff; }
    
    
    .articles { padding: 80px 0; }
    .articles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
    .article-card { background: var(--card-bg); border-radius: 12px; border: 1px solid var(--border-color); overflow: hidden; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; }
    .article-img { height: 180px; overflow: hidden; background: #e5e7eb; position: relative; }
    .article-img img { width: 100%; height: 100%; object-fit: cover; }
    .article-tag { position: absolute; top: 12px; left: 12px; background: rgba(31,41,55,0.8); color: #fff; padding: 4px 8px; border-radius: 4px; font-size: 12px; font-weight: 500; }
    .article-body { padding: 24px; flex-grow: 1; display: flex; flex-direction: column; justify-content: space-between; }
    .article-title { font-size: 18px; font-weight: 700; color: var(--dark-color); line-height: 1.4; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .article-summary { font-size: 14px; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .article-meta { display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: var(--text-muted); border-top: 1px solid var(--border-color); padding-top: 12px; }
    
    
    .cta-banner { background: linear-gradient(135deg, var(--primary-color) 0%, #374151 100%); color: #fff; padding: 60px 0; text-align: center; }
    .cta-content h2 { font-size: 28px; font-weight: 800; margin-bottom: 16px; }
    .cta-content p { font-size: 16px; color: #e5e7eb; margin-bottom: 24px; max-width: 600px; margin-left: auto; margin-right: auto; }
    
    
    .footer { background: #111827; color: #9ca3af; padding: 60px 0 20px; font-size: 14px; border-top: 4px solid var(--primary-color); }
    .footer-container { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; margin-bottom: 40px; }
    .footer-brand { display: flex; flex-direction: column; gap: 16px; }
    .footer-brand .logo span { color: #ffffff; }
    .footer-desc { line-height: 1.7; color: #9ca3af; }
    .footer-links h4, .footer-resources h4, .footer-contact h4 { color: #ffffff; font-size: 16px; font-weight: 700; margin-bottom: 20px; }
    .footer-links ul, .footer-resources ul { display: flex; flex-direction: column; gap: 10px; }
    .footer-links a:hover, .footer-resources a:hover { color: #ffffff; }
    .footer-bottom { border-top: 1px solid #1f2937; padding-top: 20px; text-align: center; display: flex; flex-direction: column; gap: 12px; }
    .risk-warning { font-size: 11px; color: #6b7280; max-width: 900px; margin: 0 auto; line-height: 1.5; }
    
    
    @media (max-width: 1024px) {
      .hero-container { grid-template-columns: 1fr; text-align: center; }
      .hero-actions-group { justify-content: center; }
      .hero-visual { display: none; }
      .features-grid { grid-template-columns: repeat(2, 1fr); }
      .footer-container { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .nav-desktop { display: none; }
      .menu-toggle { display: flex; }
      .features-grid { grid-template-columns: 1fr; }
      .platform-row { grid-template-columns: 1fr; text-align: center; }
      .platform-info { flex-direction: column; }
      .platform-action { text-align: center; }
      .articles-grid { grid-template-columns: 1fr; }
      .stats-grid { grid-template-columns: 1fr; gap: 16px; }
      .footer-container { grid-template-columns: 1fr; }
    }