/* roulang page: index */
:root {
      --primary: #0AE06C;
      --primary-dark: #0ABF5A;
      --secondary: #0B1A2E;
      --accent: #FF6B35;
      --neutral-bg: #F4F6F9;
      --white: #FFFFFF;
      --text-dark: #1E2A3A;
      --text-muted: #5A6A7E;
      --border-light: #E9EDF4;
      --shadow-sm: 0 4px 12px rgba(0,0,0,0.04);
      --shadow-card: 0 8px 24px rgba(0,0,0,0.06);
      --shadow-hover: 0 16px 36px rgba(0,0,0,0.12);
      --radius-xl: 24px;
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-full: 50px;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
      --transition: 0.25s ease;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--neutral-bg);
      color: var(--text-dark);
      line-height: 1.5;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    img {
      max-width: 100%;
      display: block;
      border-radius: var(--radius-md);
    }
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 导航 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      transition: background var(--transition), box-shadow var(--transition);
      background: transparent;
      padding: 16px 0;
    }
    .navbar.scrolled {
      background: var(--white);
      box-shadow: 0 2px 16px rgba(0,0,0,0.05);
      padding: 10px 0;
    }
    .navbar .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 700;
      font-size: 1.6rem;
      color: var(--white);
      transition: color var(--transition);
      letter-spacing: -0.3px;
    }
    .navbar.scrolled .logo {
      color: var(--secondary);
    }
    .logo i {
      color: var(--primary);
      font-size: 2rem;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-links a {
      color: rgba(255,255,255,0.9);
      font-weight: 500;
      font-size: 1rem;
      position: relative;
      padding: 6px 0;
      transition: color var(--transition);
    }
    .navbar.scrolled .nav-links a {
      color: var(--text-dark);
    }
    .nav-links a:hover {
      color: var(--primary);
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0%;
      height: 2px;
      background: var(--primary);
      transition: width var(--transition);
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .btn-capsule {
      background: var(--primary);
      color: var(--white) !important;
      border: none;
      padding: 10px 28px;
      border-radius: var(--radius-full);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: background var(--transition), transform var(--transition);
      cursor: pointer;
      font-size: 0.95rem;
    }
    .btn-capsule:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: transparent;
      border: 2px solid var(--accent);
      color: var(--accent);
      padding: 12px 32px;
      border-radius: var(--radius-full);
      font-weight: 600;
      transition: all var(--transition);
    }
    .btn-outline:hover {
      background: var(--accent);
      color: white;
      transform: translateY(-2px);
    }
    /* 移动端底部导航 */
    .mobile-bottom-nav {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: var(--white);
      box-shadow: 0 -4px 12px rgba(0,0,0,0.05);
      z-index: 999;
      padding: 8px 16px;
      justify-content: space-around;
      align-items: center;
    }
    .mobile-bottom-nav a {
      display: flex;
      flex-direction: column;
      align-items: center;
      font-size: 0.7rem;
      color: var(--text-muted);
      transition: color var(--transition);
    }
    .mobile-bottom-nav a i {
      font-size: 1.4rem;
      margin-bottom: 4px;
    }
    .mobile-bottom-nav a.active {
      color: var(--primary);
    }
    /* Hero */
    .hero {
      background: linear-gradient(135deg, #0B1A2E 0%, #1A2C45 100%);
      background-image: linear-gradient(135deg, #0B1A2E, #16273D), url('/assets/images/backpic/back-1.webp');
      background-blend-mode: overlay;
      background-size: cover;
      background-position: center;
      min-height: 95vh;
      display: flex;
      align-items: center;
      padding: 100px 0 60px;
      position: relative;
    }
    .hero .container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .hero h1 {
      font-size: 3.2rem;
      font-weight: 700;
      color: white;
      line-height: 1.2;
      margin-bottom: 20px;
    }
    .hero .subtitle {
      font-size: 1.2rem;
      color: rgba(255,255,255,0.8);
      margin-bottom: 32px;
      line-height: 1.7;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .live-card {
      background: var(--secondary);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.3);
      border: 1px solid rgba(255,255,255,0.1);
      backdrop-filter: blur(4px);
    }
    .live-badge {
      background: #e74c3c;
      color: white;
      padding: 6px 16px;
      border-radius: 20px;
      font-size: 0.8rem;
      font-weight: 700;
      display: inline-flex;
      align-items: center;
      gap: 6px;
      animation: breathe 1.8s infinite;
    }
    @keyframes breathe {
      0% { opacity: 1; }
      50% { opacity: 0.5; }
      100% { opacity: 1; }
    }
    .score-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin: 18px 0;
      color: white;
      font-size: 1.1rem;
    }
    .score-num {
      font-size: 2.5rem;
      font-weight: 800;
      font-variant-numeric: tabular-nums;
      color: var(--primary);
      animation: pulse 1.2s infinite;
    }
    @keyframes pulse {
      0% { opacity: 0.9; }
      50% { opacity: 1; text-shadow: 0 0 8px var(--primary); }
      100% { opacity: 0.9; }
    }
    /* 通用板块 */
    section {
      padding: 80px 0;
    }
    .section-title {
      font-size: 2.2rem;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .grid-2x3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 40px;
    }
    .feature-card {
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 28px 20px;
      box-shadow: var(--shadow-card);
      border-top: 5px solid var(--primary);
      transition: all var(--transition);
    }
    .feature-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .feature-icon {
      font-size: 2rem;
      color: var(--accent);
      margin-bottom: 16px;
    }
    .big-number {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--primary);
    }
    .advantages-layout {
      display: grid;
      grid-template-columns: 1fr 2fr;
      gap: 48px;
      align-items: start;
    }
    .advantage-cols {
      display: grid;
      grid-template-columns: repeat(3,1fr);
      gap: 24px;
    }
    .icon-circle {
      width: 56px;
      height: 56px;
      background: var(--accent);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 1.6rem;
      margin-bottom: 16px;
    }
    .cases-masonry {
      columns: 3;
      column-gap: 24px;
      margin-top: 32px;
    }
    .case-card {
      break-inside: avoid;
      background: var(--white);
      border-radius: var(--radius-lg);
      overflow: hidden;
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
      transition: all var(--transition);
    }
    .case-card:hover {
      transform: translateY(-4px);
    }
    .case-img {
      height: 180px;
      background-size: cover;
      background-position: center;
      position: relative;
    }
    .case-overlay {
      background: linear-gradient(0deg, rgba(0,0,0,0.6), transparent);
      position: absolute;
      bottom:0; width:100%; padding:20px;
      color:white;
    }
    .comparison-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      margin-top: 32px;
    }
    .plan-card {
      background: white;
      border-radius: var(--radius-xl);
      padding: 36px;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-light);
    }
    .plan-card.recommended {
      border: 2px solid var(--accent);
      position: relative;
    }
    .badge-recommend {
      background: var(--accent);
      color: white;
      padding: 4px 18px;
      border-radius: 20px;
      font-size: 0.8rem;
      font-weight: 700;
      position: absolute;
      top: -14px;
      right: 20px;
    }
    .faq-grid {
      display: grid;
      grid-template-columns: 1fr 2fr;
      gap: 48px;
    }
    .accordion-item {
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      background: white;
      transition: all var(--transition);
    }
    .accordion-header {
      padding: 18px 24px;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
    }
    .accordion-body {
      padding: 0 24px 18px;
      display: none;
      color: var(--text-muted);
    }
    .accordion-item.active {
      border-color: var(--primary);
    }
    .accordion-item.active .accordion-body {
      display: block;
    }
    .cta-band {
      background: linear-gradient(90deg, #0AE06C, #FF6B35);
      padding: 72px 0;
      text-align: center;
      color: white;
    }
    .footer {
      background: var(--secondary);
      color: #ccc;
      padding: 60px 0 24px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 32px;
    }
    @media (max-width: 768px) {
      .navbar .nav-links {
        display: none;
      }
      .mobile-bottom-nav {
        display: flex;
      }
      .hero .container {
        grid-template-columns: 1fr;
      }
      .grid-2x3 {
        grid-template-columns: 1fr 1fr;
      }
      .advantages-layout {
        grid-template-columns: 1fr;
      }
      .advantage-cols {
        grid-template-columns: 1fr;
      }
      .cases-masonry {
        columns: 1;
      }
      .comparison-grid {
        grid-template-columns: 1fr;
      }
      .faq-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
      .hero h1 {
        font-size: 2.4rem;
      }
    }