/* roulang page: index */
:root {
      --primary-orange: #FF4F1E;
      --primary-orange-dark: #E64410;
      --deep-green: #0B3B2F;
      --deep-green-dark: #05241C;
      --electric-yellow: #FFD100;
      --warm-bg: #F7F5F0;
      --white: #FFFFFF;
      --success-green: #00C853;
      --alert-red: #D50000;
      --info-blue: #2979FF;
      --text-dark: #1A1A1A;
      --text-mid: #4A4A4A;
      --text-light: #7A7A7A;
      --border-light: #E5E2DC;
      --shadow-sm: 0 4px 12px rgba(0,0,0,0.04);
      --shadow-md: 0 8px 24px rgba(0,0,0,0.06);
      --shadow-lg: 0 16px 40px rgba(0,0,0,0.1);
      --shadow-orange: 0 8px 24px rgba(255,79,30,0.25);
      --radius-xl: 24px;
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-full: 40px;
      --font-title: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --font-data: 'DIN Alternate', 'PingFang SC', sans-serif;
      --transition-base: 0.25s ease;
      --max-width: 1280px;
      --header-height: 72px;
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
      background-color: var(--warm-bg);
    }

    body {
      font-family: var(--font-body);
      line-height: 1.6;
      color: var(--text-dark);
      background-color: var(--warm-bg);
      -webkit-font-smoothing: antialiased;
    }

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

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

    button, .btn {
      cursor: pointer;
      font-family: var(--font-body);
      border: none;
      background: none;
      outline: none;
    }

    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 导航 */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: var(--header-height);
      background: rgba(255,255,255,0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
      z-index: 1000;
      display: flex;
      align-items: center;
    }
    .header-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 24px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 800;
      font-size: 1.4rem;
      color: var(--deep-green);
      letter-spacing: -0.5px;
    }
    .logo-icon {
      width: 28px;
      height: 28px;
      fill: var(--primary-orange);
    }
    .logo span {
      color: var(--primary-orange);
    }
    .nav-links {
      display: flex;
      gap: 28px;
      align-items: center;
      list-style: none;
    }
    .nav-links a {
      font-weight: 500;
      font-size: 0.95rem;
      color: var(--text-mid);
      position: relative;
      padding: 6px 0;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary-orange);
      transition: width var(--transition-base);
    }
    .nav-links a:hover {
      color: var(--primary-orange);
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .nav-cta {
      background: var(--primary-orange);
      color: white;
      padding: 10px 22px;
      border-radius: var(--radius-full);
      font-weight: 600;
      font-size: 0.9rem;
      transition: background var(--transition-base), box-shadow var(--transition-base);
      white-space: nowrap;
    }
    .nav-cta:hover {
      background: var(--primary-orange-dark);
      box-shadow: var(--shadow-orange);
    }
    .live-badge {
      background: var(--electric-yellow);
      color: var(--deep-green);
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 20px;
      margin-left: 12px;
      display: flex;
      align-items: center;
      gap: 4px;
    }
    .live-dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--success-green);
      display: inline-block;
    }

    /* 移动端导航 */
    .menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.8rem;
      color: var(--deep-green);
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        background: white;
        border-top: 1px solid var(--border-light);
        flex-direction: row;
        justify-content: space-around;
        padding: 12px 8px;
        gap: 0;
        box-shadow: 0 -4px 12px rgba(0,0,0,0.05);
      }
      .nav-links.mobile-active {
        display: flex;
      }
      .nav-links a {
        font-size: 0.75rem;
        flex-direction: column;
        align-items: center;
        gap: 4px;
      }
      .menu-toggle {
        display: block;
      }
      .header-inner .nav-cta.desktop-only {
        display: none;
      }
      .live-badge {
        display: none;
      }
    }

    /* Hero */
    .hero {
      background: linear-gradient(135deg, #0B3B2F 0%, #05241C 100%);
      color: white;
      padding: 120px 0 80px;
      margin-top: var(--header-height);
      position: relative;
      overflow: hidden;
    }
    .hero .container {
      display: flex;
      align-items: center;
      gap: 48px;
      flex-wrap: wrap;
    }
    .hero-content {
      flex: 1 1 450px;
      z-index: 2;
    }
    .hero h1 {
      font-family: var(--font-title);
      font-size: 3rem;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 20px;
    }
    .hero-sub {
      font-size: 1.25rem;
      opacity: 0.9;
      margin-bottom: 36px;
      color: rgba(255,255,255,0.85);
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--primary-orange);
      color: white;
      padding: 14px 32px;
      border-radius: var(--radius-full);
      font-weight: 700;
      font-size: 1rem;
      transition: all var(--transition-base);
      display: inline-block;
    }
    .btn-primary:hover {
      background: var(--primary-orange-dark);
      box-shadow: 0 12px 28px rgba(255,79,30,0.35);
      transform: scale(1.02);
    }
    .btn-outline-light {
      background: transparent;
      border: 2px solid white;
      color: white;
      padding: 12px 30px;
      border-radius: var(--radius-full);
      font-weight: 600;
      transition: all var(--transition-base);
    }
    .btn-outline-light:hover {
      background: white;
      color: var(--deep-green);
    }
    .hero-visual {
      flex: 1 1 400px;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-radius: var(--radius-xl);
      min-height: 280px;
      box-shadow: var(--shadow-lg);
    }
    .floating-stat {
      position: absolute;
      bottom: 30px;
      right: 10%;
      background: rgba(255,255,255,0.1);
      backdrop-filter: blur(8px);
      border-radius: 40px;
      padding: 10px 24px;
      font-weight: 700;
      font-size: 1.1rem;
      color: var(--electric-yellow);
    }

    /* 通用板块 */
    .section {
      padding: 90px 0;
    }
    .section-dark {
      background: linear-gradient(135deg, #0B3B2F 0%, #05241C 100%);
      color: white;
    }
    .section-title {
      font-family: var(--font-title);
      font-size: 2.25rem;
      font-weight: 700;
      margin-bottom: 16px;
      text-align: center;
    }
    .section-sub {
      text-align: center;
      color: var(--text-light);
      max-width: 700px;
      margin: 0 auto 48px;
      font-size: 1.1rem;
    }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .grid-4 {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .card {
      background: var(--white);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      transition: all var(--transition-base);
    }
    .card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border: 1px solid var(--primary-orange);
    }

    /* 痛点卡片特殊样式 */
    .pain-card {
      border-left: 4px solid transparent;
    }
    .pain-card:hover {
      border-left: 4px solid var(--primary-orange);
    }

    /* 方案区块 */
    .solution-row {
      display: flex;
      gap: 48px;
      align-items: center;
    }
    .solution-text {
      flex: 1;
    }
    .solution-img {
      flex: 1;
      background: url('/assets/images/coverpic/cover-1.webp') center/cover no-repeat;
      border-radius: var(--radius-xl);
      min-height: 300px;
    }

    /* 实时数据战绩 */
    .stat-badge {
      text-align: center;
    }
    .stat-number {
      font-family: var(--font-data);
      font-size: 2.8rem;
      font-weight: 700;
      color: var(--electric-yellow);
    }
    .live-scroll {
      display: flex;
      gap: 16px;
      overflow-x: auto;
      padding: 20px 0;
      margin-top: 32px;
    }
    .match-chip {
      background: rgba(255,255,255,0.08);
      border-radius: 40px;
      padding: 10px 20px;
      white-space: nowrap;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    /* 证言 */
    .testimonial-card {
      background: #F0EDE6;
      border-radius: var(--radius-lg);
      padding: 28px;
    }
    .quote-mark {
      color: var(--primary-orange);
      font-size: 2.5rem;
      font-weight: 700;
      line-height: 1;
    }

    /* FAQ */
    .faq-item {
      background: white;
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      box-shadow: var(--shadow-sm);
      overflow: hidden;
    }
    .faq-question {
      padding: 20px 28px;
      font-weight: 700;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
      background: white;
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      padding: 0 28px;
      color: var(--text-mid);
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 0 28px 20px;
    }
    .faq-item.active .faq-question {
      color: var(--primary-orange);
    }

    /* CTA */
    .cta-final {
      text-align: center;
      padding: 100px 0;
    }
    .btn-cta-large {
      background: var(--electric-yellow);
      color: var(--deep-green);
      padding: 18px 48px;
      font-size: 1.2rem;
      border-radius: 60px;
      font-weight: 800;
      display: inline-block;
      margin-top: 24px;
    }

    /* Footer */
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 32px;
      padding: 60px 0 40px;
    }
    .copyright {
      background: var(--deep-green);
      color: rgba(255,255,255,0.7);
      text-align: center;
      padding: 20px;
      font-size: 0.9rem;
    }

    @media (max-width: 1024px) {
      .grid-3, .grid-4 { grid-template-columns: repeat(2,1fr); }
      .solution-row { flex-direction: column; }
      .hero h1 { font-size: 2.2rem; }
    }
    @media (max-width: 768px) {
      .grid-3, .grid-4 { grid-template-columns: 1fr; }
      .hero { padding: 100px 0 60px; }
      .footer-grid { grid-template-columns: 1fr; }
      .section-title { font-size: 1.8rem; }
      .hero-visual { min-height: 200px; }
    }