/* roulang page: index */
:root {
      --deep-blue: #0A0F1E;
      --card-bg: rgba(20, 28, 45, 0.75);
      --blur-bg: rgba(10, 15, 30, 0.9);
      --accent-red: #FF3B30;
      --grass-green: #1F8A4A;
      --text-silver: #8E9AAF;
      --white: #FFFFFF;
      --soft-white: #F0F2F5;
      --border-light: rgba(255,255,255,0.08);
      --radius-lg: 16px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
      --shadow-glow: 0 0 18px rgba(255,59,48,0.6);
      --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
      --transition: 0.25s ease;
    }

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

    body {
      font-family: var(--font-sans);
      background: radial-gradient(circle at 20% 20%, #141C2D, #0A0F1E);
      background-attachment: fixed;
      color: var(--text-silver);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
      width: 100%;
    }

    /* 导航栏 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 72px;
      background: var(--blur-bg);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(255,255,255,0.08);
      z-index: 1000;
      display: flex;
      align-items: center;
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      text-decoration: none;
      color: var(--white);
      font-weight: 800;
      font-size: 1.5rem;
      letter-spacing: -0.3px;
    }
    .logo i {
      color: var(--accent-red);
      font-size: 1.8rem;
      filter: drop-shadow(0 0 8px rgba(255,59,48,0.7));
    }
    .nav-links {
      display: flex;
      gap: 2rem;
      align-items: center;
    }
    .nav-links a {
      color: var(--text-silver);
      text-decoration: none;
      font-weight: 500;
      font-size: 0.95rem;
      transition: color var(--transition);
      position: relative;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--white);
    }
    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--accent-red);
      border-radius: 2px;
    }
    .btn-primary {
      background: var(--accent-red);
      border: none;
      color: white;
      font-weight: 700;
      padding: 12px 28px;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 0 14px rgba(255,59,48,0.5);
      transition: all var(--transition);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      text-decoration: none;
      letter-spacing: 0.5px;
    }
    .btn-primary:hover {
      background: #ff5a4a;
      box-shadow: 0 0 24px rgba(255,59,48,0.8);
      transform: translateY(-2px);
    }
    .btn-secondary {
      background: transparent;
      border: 1px solid rgba(255,255,255,0.3);
      color: white;
      padding: 12px 28px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      cursor: pointer;
      transition: all var(--transition);
      text-decoration: none;
    }
    .btn-secondary:hover {
      border-color: white;
      background: rgba(255,255,255,0.05);
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      color: white;
      font-size: 1.8rem;
      cursor: pointer;
    }

    /* Hero */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      position: relative;
      margin-top: 0;
      padding-top: 80px;
    }
    .hero::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background: linear-gradient(90deg, rgba(10,15,30,0.9) 0%, rgba(20,28,45,0.7) 70%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 700px;
      padding: 2rem 0;
    }
    .hero h1 {
      font-size: clamp(2.5rem, 6vw, 3.8rem);
      font-weight: 800;
      color: var(--white);
      line-height: 1.2;
      margin-bottom: 1.5rem;
      letter-spacing: -0.5px;
    }
    .hero p {
      font-size: 1.2rem;
      color: #B0B8C9;
      margin-bottom: 2.5rem;
      max-width: 550px;
    }
    .live-score-ticker {
      background: rgba(20,28,45,0.8);
      backdrop-filter: blur(14px);
      border: 1px solid var(--border-light);
      border-radius: 30px;
      padding: 8px 24px;
      display: inline-flex;
      align-items: center;
      gap: 12px;
      margin-top: 1.2rem;
      color: white;
      font-weight: 600;
    }
    .live-dot {
      width: 10px;
      height: 10px;
      background: var(--accent-red);
      border-radius: 50%;
      display: inline-block;
      animation: pulse 1.5s infinite;
    }
    @keyframes pulse { 0% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(1.2); } 100% { opacity: 1; transform: scale(1); } }

    /* 板块通用 */
    section {
      padding: 100px 0;
    }
    .section-title {
      font-size: 2.4rem;
      font-weight: 700;
      color: var(--soft-white);
      margin-bottom: 1rem;
    }
    .glass-card {
      background: var(--card-bg);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card), inset 0 1px 0 rgba(255,255,255,0.05);
      transition: all 0.3s;
    }
    .glass-card:hover {
      transform: translateY(-6px);
      box-shadow: 0 16px 40px rgba(0,0,0,0.6);
    }

    /* 痛点错落 */
    .problem-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 30px;
      justify-content: center;
      margin-top: 3rem;
    }
    .problem-item {
      flex: 1 1 250px;
      background: var(--card-bg);
      backdrop-filter: blur(16px);
      border-radius: var(--radius-md);
      padding: 32px 24px;
      border: 1px solid var(--border-light);
    }

    /* 方案图文交替 */
    .feature-row {
      display: flex;
      align-items: center;
      gap: 60px;
      margin-bottom: 80px;
    }
    .feature-row.reverse {
      flex-direction: row-reverse;
    }
    .feature-img {
      flex: 1;
      border-radius: var(--radius-lg);
      overflow: hidden;
    }
    .feature-img img {
      width: 100%;
      height: auto;
      display: block;
      border-radius: var(--radius-lg);
    }
    .feature-text {
      flex: 1;
    }

    /* 步骤流程 */
    .steps {
      display: flex;
      justify-content: space-between;
      margin-top: 3rem;
      gap: 2rem;
    }
    .step {
      text-align: center;
    }
    .step-num {
      font-size: 3rem;
      font-weight: 800;
      color: var(--accent-red);
    }

    /* 证言横向滚动 */
    .testimonials-scroll {
      display: flex;
      gap: 24px;
      overflow-x: auto;
      padding-bottom: 20px;
      margin-top: 40px;
    }
    .testimonial-card {
      min-width: 280px;
      background: var(--card-bg);
      backdrop-filter: blur(16px);
      border-radius: var(--radius-md);
      padding: 28px;
      border: 1px solid var(--border-light);
    }

    /* FAQ */
    .faq-item {
      border-bottom: 1px solid rgba(255,255,255,0.08);
      padding: 18px 0;
    }
    .faq-question {
      font-weight: 700;
      color: white;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
    }

    /* 页脚 */
    footer {
      background: #0A0F1E;
      border-top: 1px solid rgba(255,255,255,0.05);
      padding: 50px 0 30px;
    }

    @media (max-width: 1024px) {
      .nav-links { display: none; }
      .mobile-menu-toggle { display: block; }
      .feature-row { flex-direction: column; gap: 30px; }
      .feature-row.reverse { flex-direction: column; }
    }