:root {
      --primary: #1D7BFF;
      --primary-hover: #0056C6;
      --primary-light: #E6F0FA;
      --accent: #00B4D8;
      --dark-bg: #0A1128;
      --dark-card: #001A3D;
      --silver: #F4F7FC;
      --text-dark: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --border-color: #E2E8F0;
      --white: rgb(255,255,255);
      --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
      --shadow-md: 0 10px 15px -3px rgba(0,0,0,0.1);
      --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.15);
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
      color: var(--text-dark);
      background-color: var(--white);
      line-height: 1.6;
      overflow-x: hidden;
    }

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

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

    
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    
    .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-dark);
      white-space: nowrap;
      letter-spacing: -0.5px;
    }

    
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background-color: rgba(255, 255, 255, 0.9);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      transition: var(--transition);
    }
    .header-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-menu a {
      font-size: 15px;
      font-weight: 600;
      color: var(--text-muted);
    }
    .nav-menu a:hover {
      color: var(--primary);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      border-radius: 8px;
      font-size: 14px;
      font-weight: 600;
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
    }
    .btn-primary {
      background-color: var(--primary);
      color: var(--white);
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      box-shadow: 0 4px 12px rgba(29, 123, 255, 0.25);
    }
    .btn-secondary {
      background-color: var(--primary-light);
      color: var(--primary);
    }
    .btn-secondary:hover {
      background-color: #d1e5fc;
    }
    .btn-outline {
      border-color: var(--border-color);
      color: var(--text-muted);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    
    .nav-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 4px;
    }
    .nav-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background-color: var(--text-dark);
      margin: 5px 0;
      transition: var(--transition);
    }

    
    .mobile-drawer {
      position: fixed;
      top: 0;
      left: -320px;
      width: 300px;
      height: 100%;
      background-color: var(--white);
      z-index: 200;
      box-shadow: var(--shadow-lg);
      transition: var(--transition);
      padding: 24px;
      display: flex;
      flex-direction: column;
      gap: 32px;
    }
    .mobile-drawer.active {
      left: 0;
    }
    .drawer-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .drawer-close {
      background: none;
      border: none;
      font-size: 24px;
      cursor: pointer;
      color: var(--text-muted);
    }
    .mobile-nav {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .mobile-nav a {
      font-size: 16px;
      font-weight: 600;
      color: var(--text-muted);
      padding-bottom: 8px;
      border-bottom: 1px solid var(--silver);
    }
    .mobile-nav a:hover {
      color: var(--primary);
    }
    .drawer-backdrop {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-color: rgba(10, 17, 40, 0.4);
      z-index: 150;
      opacity: 0;
      visibility: hidden;
      transition: var(--transition);
    }
    .drawer-backdrop.active {
      opacity: 1;
      visibility: visible;
    }

    
    .hero-layout-01 {
      background: linear-gradient(135deg, var(--dark-bg) 0%, #030816 100%);
      color: var(--white);
      padding: 80px 0 120px 0;
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    .hero-layout-01::before {
      content: '';
      position: absolute;
      top: -10%;
      left: 50%;
      transform: translateX(-50%);
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(29, 123, 255, 0.2) 0%, transparent 70%);
      pointer-events: none;
    }
    .hero-tagline {
      display: inline-flex;
      align-items: center;
      background: rgba(29, 123, 255, 0.15);
      border: 1px solid rgba(29, 123, 255, 0.3);
      padding: 6px 16px;
      border-radius: 50px;
      font-size: 14px;
      font-weight: 600;
      color: var(--accent);
      margin-bottom: 24px;
      text-transform: uppercase;
    }
    .hero-layout-01 h1 {
      font-size: 48px;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-layout-01 h1 span {
      background: linear-gradient(90deg, #90E0EF 0%, var(--primary) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-layout-01 p {
      font-size: 18px;
      color: var(--text-light);
      max-width: 720px;
      margin: 0 auto 36px auto;
    }
    .hero-buttons {
      display: flex;
      justify-content: center;
      gap: 16px;
      margin-bottom: 64px;
    }
    .hero-visual-wrapper {
      position: relative;
      max-width: 900px;
      margin: 0 auto;
    }
    
    .main-visual-panel {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 20px;
      padding: 40px;
      backdrop-filter: blur(10px);
      box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
    }
    .calculator-preview {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      text-align: left;
    }
    .calc-item {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 12px;
      padding: 24px;
    }
    .calc-item label {
      display: block;
      font-size: 12px;
      text-transform: uppercase;
      color: var(--text-light);
      margin-bottom: 8px;
    }
    .calc-item .value {
      font-size: 24px;
      font-weight: 700;
      color: var(--white);
    }
    .calc-item .highlight {
      color: #00F5D4;
    }
    
    
    .floating-cards-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: -40px;
      position: relative;
      z-index: 10;
    }
    .floating-card {
      background: var(--white);
      color: var(--text-dark);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 24px;
      text-align: left;
      box-shadow: var(--shadow-lg);
      transition: var(--transition);
    }
    .floating-card:hover {
      transform: translateY(-5px);
      box-shadow: 0 25px 50px -12px rgba(29,123,255,0.25);
      border-color: var(--primary);
    }
    .floating-card .icon-box {
      width: 48px;
      height: 48px;
      background: var(--primary-light);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 16px;
      color: var(--primary);
      font-weight: bold;
    }
    .floating-card h3 {
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .floating-card p {
      font-size: 13px;
      color: var(--text-muted);
      margin-bottom: 0;
      line-height: 1.5;
    }

    
    .trust-strip {
      background-color: var(--silver);
      padding: 24px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .trust-container {
      display: flex;
      align-items: center;
      justify-content: space-around;
      flex-wrap: wrap;
      gap: 24px;
    }
    .trust-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 14px;
      font-weight: 600;
      color: var(--text-muted);
    }
    .trust-item svg {
      color: var(--primary);
    }

    
    .section-padding {
      padding: 80px 0;
    }
    .section-title {
      text-align: center;
      margin-bottom: 48px;
    }
    .section-title h2 {
      font-size: 32px;
      font-weight: 800;
      margin-bottom: 16px;
      color: var(--text-dark);
    }
    .section-title p {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 600px;
      margin: 0 auto;
    }

    
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .feature-item-card {
      background-color: var(--white);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 32px;
      transition: var(--transition);
    }
    .feature-item-card:hover {
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .feature-num {
      font-size: 36px;
      font-weight: 800;
      color: var(--primary-light);
      margin-bottom: 16px;
    }
    .feature-item-card h3 {
      font-size: 20px;
      margin-bottom: 12px;
    }

    
    .content-split {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 40px;
    }
    .article-card {
      background-color: var(--white);
      border: 1px solid var(--border-color);
      border-radius: 16px;
      overflow: hidden;
      display: flex;
      gap: 24px;
      padding: 20px;
      transition: var(--transition);
      margin-bottom: 24px;
    }
    .article-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: var(--primary);
    }
    .article-img {
      width: 200px;
      height: 140px;
      object-fit: cover;
      border-radius: 8px;
      flex-shrink: 0;
    }
    .article-info {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .article-meta {
      display: flex;
      align-items: center;
      gap: 16px;
      font-size: 12px;
      color: var(--text-light);
    }
    .article-meta span {
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }
    .article-title {
      font-size: 18px;
      font-weight: 700;
      margin: 8px 0;
      line-height: 1.4;
    }
    .article-title a:hover {
      color: var(--primary);
    }
    .article-desc {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.5;
      margin-bottom: 12px;
    }
    .article-tags {
      display: flex;
      gap: 8px;
    }
    .tag-badge {
      font-size: 11px;
      background-color: var(--silver);
      color: var(--text-muted);
      padding: 2px 8px;
      border-radius: 4px;
    }

    
    .sidebar-widget {
      border: 1px solid var(--border-color);
      border-radius: 16px;
      padding: 24px;
      margin-bottom: 32px;
      background-color: var(--white);
    }
    .widget-title {
      font-size: 18px;
      font-weight: 700;
      border-left: 4px solid var(--primary);
      padding-left: 12px;
      margin-bottom: 20px;
    }
    .hot-list {
      list-style: none;
    }
    .hot-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding-bottom: 16px;
      margin-bottom: 16px;
      border-bottom: 1px solid var(--silver);
    }
    .hot-item:last-child {
      border-bottom: none;
      padding-bottom: 0;
      margin-bottom: 0;
    }
    .hot-num {
      width: 24px;
      height: 24px;
      background-color: var(--silver);
      color: var(--text-muted);
      font-size: 12px;
      font-weight: bold;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 4px;
      flex-shrink: 0;
    }
    .hot-item:nth-child(-n+3) .hot-num {
      background-color: var(--primary-light);
      color: var(--primary);
    }
    .hot-content h4 {
      font-size: 14px;
      font-weight: 600;
      line-height: 1.4;
      margin-bottom: 4px;
    }
    .tag-cloud-wrap {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .tag-cloud-item {
      font-size: 12px;
      background-color: var(--silver);
      color: var(--text-muted);
      padding: 6px 12px;
      border-radius: 20px;
    }
    .tag-cloud-item:hover {
      background-color: var(--primary);
      color: var(--white);
    }

    
    .cta-section {
      background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
      color: var(--white);
      text-align: center;
      padding: 80px 0;
    }
    .cta-section h2 {
      font-size: 36px;
      font-weight: 800;
      margin-bottom: 16px;
    }
    .cta-section p {
      font-size: 18px;
      margin-bottom: 32px;
      opacity: 0.9;
    }

    
    .site-footer {
      background-color: var(--dark-bg);
      color: var(--text-light);
      padding: 80px 0 40px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.05);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 60px;
    }
    .footer-brand p {
      margin-top: 16px;
      font-size: 14px;
      line-height: 1.6;
    }
    .footer-title {
      color: var(--white);
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 24px;
    }
    .footer-links {
      list-style: none;
    }
    .footer-links li {
      margin-bottom: 12px;
    }
    .footer-links a {
      font-size: 14px;
    }
    .footer-links a:hover {
      color: var(--white);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.05);
      padding-top: 40px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 20px;
      font-size: 13px;
    }

    
    @media (max-width: 992px) {
      .hero-layout-01 h1 { font-size: 38px; }
      .feature-grid { grid-template-columns: 1fr; }
      .content-split { grid-template-columns: 1fr; }
      .floating-cards-grid { grid-template-columns: repeat(2, 1fr); margin-top: 24px; }
      .calculator-preview { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 768px) {
      .nav-menu, .nav-actions .btn:not(.nav-toggle-btn) { display: none; }
      .nav-toggle { display: block; }
      .hero-buttons { flex-direction: column; align-items: stretch; }
      .article-card { flex-direction: column; }
      .article-img { width: 100%; height: 200px; }
      .floating-cards-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
    }