:root {
      --theme-color: rgb(8,145,178);
      --theme-hover: rgb(6,116,143);
      --bg-deep: #070c19;
      --bg-glacier: #0f1c3f;
      --text-light: #f8fafc;
      --text-gray: #94a3b8;
      --text-dark: #0f172a;
      --text-muted: #64748b;
      --border-color: rgba(8,145,178, 0.2);
      --shadow-sm: 0 2px 8px rgba(0,0,0,0.1);
      --shadow-md: 0 10px 25px rgba(0,0,0,0.15);
      --max-width: 1200px;
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; line-height: 1.6; color: var(--text-dark); background: #f8fafc; }
    a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
    ul { list-style: none; }
    .container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; width: 100%; }

    
    header { background: var(--bg-deep); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 100; }
    .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(--text-light); white-space: nowrap; letter-spacing: 0.5px; }
    .nav-desktop { display: flex; align-items: center; gap: 32px; }
    .nav-desktop a { color: var(--text-gray); font-size: 15px; font-weight: 500; }
    .nav-desktop a:hover, .nav-desktop a.active { color: var(--theme-color); }
    .nav-btn { background: var(--theme-color); color: var(--text-light) !important; padding: 8px 20px; border-radius: 6px; font-weight: 600; }
    .nav-btn:hover { background: var(--theme-hover); }
    .nav-toggle { display: none; background: none; border: none; color: var(--text-light); font-size: 24px; cursor: pointer; }

    
    .drawer-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); z-index: 998; backdrop-filter: blur(4px); }
    .drawer { position: fixed; top: 0; left: -280px; width: 280px; height: 100%; background: var(--bg-deep); z-index: 999; box-shadow: var(--shadow-md); transition: left 0.3s ease; display: flex; flex-direction: column; padding: 24px; }
    .drawer.active { left: 0; }
    .drawer-overlay.active { display: block; }
    .drawer-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 40px; }
    .drawer-close { background: none; border: none; color: var(--text-light); font-size: 24px; cursor: pointer; }
    .drawer-menu { display: flex; flex-direction: column; gap: 20px; }
    .drawer-menu a { color: var(--text-gray); font-size: 16px; font-weight: 500; padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
    .drawer-menu a:hover { color: var(--theme-color); }

    
    .hero { background: radial-gradient(circle at center, var(--bg-glacier) 0%, var(--bg-deep) 100%); color: var(--text-light); padding: 80px 0 120px; text-align: center; overflow: hidden; position: relative; }
    .hero-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; opacity: 0.15; background: radial-gradient(circle at 50% 50%, var(--theme-color), transparent 60%); }
    .hero-badge { display: inline-block; background: rgba(8,145,178,0.15); border: 1px solid var(--theme-color); color: var(--theme-color); padding: 6px 16px; border-radius: 50px; font-size: 14px; font-weight: 600; margin-bottom: 24px; text-transform: uppercase; letter-spacing: 1px; }
    .hero-title { font-size: 48px; font-weight: 800; line-height: 1.25; margin-bottom: 20px; color: var(--text-light); letter-spacing: -1px; }
    .hero-title span { color: var(--theme-color); }
    .hero-desc { font-size: 18px; color: var(--text-gray); max-width: 720px; margin: 0 auto 36px; line-height: 1.6; }
    .hero-actions { display: flex; justify-content: center; gap: 16px; margin-bottom: 60px; }
    .btn { display: inline-block; padding: 12px 32px; border-radius: 6px; font-weight: 600; font-size: 15px; cursor: pointer; border: none; text-align: center; }
    .btn-primary { background: var(--theme-color); color: var(--text-light); }
    .btn-primary:hover { background: var(--theme-hover); }
    .btn-secondary { background: rgba(255,255,255,0.08); color: var(--text-light); border: 1px solid rgba(255,255,255,0.15); }
    .btn-secondary:hover { background: rgba(255,255,255,0.15); border-color: var(--theme-color); }

    
    .hero-visual-panel { position: relative; max-width: 900px; margin: 0 auto; padding: 20px; background: rgba(255,255,255,0.03); border: 1px solid var(--border-color); border-radius: 12px; backdrop-filter: blur(10px); }
    .panel-screen { background: #0b1528; border-radius: 8px; border: 1px solid rgba(255,255,255,0.05); overflow: hidden; box-shadow: var(--shadow-md); aspect-ratio: 16/9; display: flex; flex-direction: column; }
    .panel-header { background: #070c19; padding: 10px 16px; display: flex; align-items: center; gap: 8px; border-bottom: 1px solid rgba(255,255,255,0.05); }
    .panel-header .dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
    .panel-header .dot-1 { background: #ef4444; }
    .panel-header .dot-2 { background: #eab308; }
    .panel-header .dot-3 { background: #22c55e; }
    .panel-url { font-size: 11px; color: var(--text-gray); background: rgba(255,255,255,0.05); padding: 4px 12px; border-radius: 4px; margin-left: 12px; flex-grow: 1; text-align: left; max-width: 300px; text-overflow: ellipsis; white-space: nowrap; overflow: hidden; }
    .panel-body { flex-grow: 1; padding: 24px; display: flex; flex-direction: column; justify-content: center; align-items: center; color: var(--text-light); }
    .panel-mock-ui { text-align: center; }
    .panel-mock-icon { font-size: 48px; color: var(--theme-color); margin-bottom: 16px; display: block; animation: float 3s ease-in-out infinite; }
    .panel-mock-text { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 8px; }
    .panel-mock-sub { font-size: 13px; color: var(--text-gray); }

    
    .float-card { position: absolute; background: rgba(15, 28, 63, 0.9); border: 1px solid var(--border-color); border-radius: 8px; padding: 16px 20px; display: flex; align-items: center; gap: 14px; text-align: left; width: 220px; box-shadow: var(--shadow-md); transition: transform 0.3s; z-index: 10; }
    .float-card:hover { transform: translateY(-5px); border-color: var(--theme-color); }
    .float-card i { font-size: 28px; color: var(--theme-color); }
    .float-card h4 { font-size: 14px; font-weight: 700; color: #fff; margin-bottom: 2px; }
    .float-card p { font-size: 11px; color: var(--text-gray); line-height: 1.3; }
    .card-tl { top: -20px; left: -100px; }
    .card-tr { top: -20px; right: -100px; }
    .card-bl { bottom: -20px; left: -100px; }
    .card-br { bottom: -20px; right: -100px; }

    
    .section-padding { padding: 80px 0; }
    .bg-white { background: #fff; }
    .section-header { text-align: center; max-width: 680px; margin: 0 auto 50px; }
    .section-header h2 { font-size: 32px; font-weight: 800; color: var(--text-dark); margin-bottom: 16px; }
    .section-header p { color: var(--text-muted); font-size: 16px; }
    
    .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
    .feature-card { background: #fff; border: 1px solid #e2e8f0; border-radius: 8px; padding: 36px 24px; text-align: center; transition: all 0.3s; }
    .feature-card:hover { border-color: var(--theme-color); transform: translateY(-5px); box-shadow: var(--shadow-sm); }
    .feature-icon { width: 64px; height: 64px; background: rgba(8,145,178,0.08); color: var(--theme-color); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 24px; font-size: 28px; }
    .feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; color: var(--text-dark); }
    .feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

    
    .steps-section { background: #f1f5f9; }
    .step-list { display: flex; justify-content: space-between; position: relative; margin-top: 40px; }
    .step-list::before { content: ''; position: absolute; top: 35px; left: 50px; right: 50px; height: 2px; background: #cbd5e1; z-index: 1; }
    .step-item { flex: 1; text-align: center; position: relative; z-index: 2; padding: 0 15px; }
    .step-num { width: 70px; height: 70px; background: #fff; border: 3px solid #cbd5e1; color: var(--text-muted); font-size: 24px; font-weight: 800; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; transition: all 0.3s; }
    .step-item:hover .step-num { border-color: var(--theme-color); color: var(--theme-color); }
    .step-item h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: var(--text-dark); }
    .step-item p { font-size: 13px; color: var(--text-muted); }

    
    .article-section { background: #fff; }
    .articles-container { display: grid; grid-template-columns: 2fr 1fr; gap: 40px; }
    .article-main-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .article-card { background: #fff; border: 1px solid #e2e8f0; border-radius: 8px; overflow: hidden; transition: all 0.3s; display: flex; flex-direction: column; }
    .article-card:hover { transform: translateY(-3px); border-color: var(--theme-color); box-shadow: var(--shadow-sm); }
    .article-image { width: 100%; height: 180px; object-fit: cover; background-color: #f1f5f9; }
    .article-content { padding: 20px; display: flex; flex-direction: column; flex-grow: 1; }
    .article-meta { display: flex; gap: 14px; font-size: 12px; color: var(--text-muted); margin-bottom: 10px; }
    .article-title { font-size: 16px; font-weight: 700; line-height: 1.4; margin-bottom: 8px; color: var(--text-dark); }
    .article-summary { font-size: 13px; color: var(--text-muted); line-height: 1.5; margin-bottom: 16px; flex-grow: 1; }
    .article-tags { display: flex; gap: 6px; flex-wrap: wrap; }
    .article-tag { font-size: 11px; background: #f1f5f9; color: var(--theme-color); padding: 2px 8px; border-radius: 4px; }
    
    .sidebar-block { background: #f8fafc; border: 1px solid #e2e8f0; border-radius: 8px; padding: 24px; margin-bottom: 24px; }
    .sidebar-title { font-size: 16px; font-weight: 800; border-left: 4px solid var(--theme-color); padding-left: 10px; margin-bottom: 16px; color: var(--text-dark); }
    .hot-list { display: flex; flex-direction: column; gap: 14px; }
    .hot-item { display: flex; align-items: flex-start; gap: 12px; }
    .hot-num { width: 24px; height: 24px; background: #cbd5e1; color: var(--text-muted); border-radius: 4px; font-weight: 800; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 12px; }
    .hot-item:nth-child(-n+3) .hot-num { background: var(--theme-color); color: #fff; }
    .hot-text h4 { font-size: 13px; font-weight: 600; line-height: 1.4; color: var(--text-dark); margin-bottom: 4px; }
    .hot-text span { font-size: 11px; color: var(--text-muted); }

    
    .cta-section { background: radial-gradient(circle at center, var(--bg-glacier) 0%, var(--bg-deep) 100%); color: var(--text-light); text-align: center; padding: 70px 0; border-top: 1px solid var(--border-color); }
    .cta-title { font-size: 28px; font-weight: 800; margin-bottom: 16px; }
    .cta-desc { font-size: 15px; color: var(--text-gray); max-width: 600px; margin: 0 auto 28px; }

    
    footer { background: var(--bg-deep); color: var(--text-gray); padding: 60px 0 30px; border-top: 1px solid var(--border-color); font-size: 14px; }
    .footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 40px; margin-bottom: 40px; }
    .footer-intro p { margin-top: 16px; line-height: 1.6; font-size: 13px; }
    .footer-title { font-size: 15px; font-weight: 700; color: var(--text-light); margin-bottom: 18px; }
    .footer-links { display: flex; flex-direction: column; gap: 10px; }
    .footer-links a { font-size: 13px; }
    .footer-links a:hover { color: var(--theme-color); }
    .footer-contact { display: flex; flex-direction: column; gap: 8px; font-size: 13px; }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,0.05); padding-top: 30px; display: flex; justify-content: space-between; align-items: center; font-size: 12px; }
    .footer-seo-links { display: flex; gap: 16px; }
    .footer-seo-links a { color: var(--text-muted); }
    .footer-seo-links a:hover { color: var(--theme-color); }

    @keyframes float {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-8px); }
    }

    
    @media (max-width: 1100px) {
      .float-card { position: static; width: 100%; margin-top: 15px; box-shadow: none; }
      .hero-visual-panel { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; background: none; border: none; padding: 0; }
      .panel-screen { grid-column: span 2; }
      .card-tl, .card-tr, .card-bl, .card-br { top: auto; bottom: auto; left: auto; right: auto; }
    }
    @media (max-width: 968px) {
      .articles-container { grid-template-columns: 1fr; }
      .grid-3 { grid-template-columns: 1fr; gap: 20px; }
      .step-list { flex-direction: column; gap: 30px; }
      .step-list::before { display: none; }
    }
    @media (max-width: 768px) {
      .nav-toggle { display: block; }
      .nav-desktop { display: none; }
      .hero-title { font-size: 32px; }
      .hero-desc { font-size: 15px; }
      .hero-visual-panel { grid-template-columns: 1fr; }
      .panel-screen { grid-column: span 1; }
      .article-main-list { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; gap: 30px; }
      .footer-bottom { flex-direction: column; gap: 15px; text-align: center; }
    }