/* roulang page: index */
:root {
      --primary-orange: #D4783B;
      --primary-deep: #B85E2A;
      --amber-glow: #F0A04B;
      --honey-gold: #E8B86D;
      --dark-rock: #2C2C2C;
      --charcoal: #1A1A1A;
      --cream-bg: #FFF9F2;
      --warm-gray: #FDF5EC;
      --text-dark: #2C2C2C;
      --text-light: #FFFFFF;
      --text-muted: #7A7A7A;
      --glass-bg: rgba(255,249,242,0.7);
      --glass-border: rgba(232,184,109,0.25);
      --glass-blur: blur(16px);
      --radius-card: 16px;
      --radius-btn: 30px;
      --shadow-card: 0 8px 30px rgba(44,44,44,0.06);
      --shadow-hover: 0 16px 36px rgba(44,44,44,0.12);
      --glow-amber: 0 0 18px rgba(240,160,75,0.5);
      --transition-smooth: all 0.25s ease;
      --font-stack: -apple-system, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: var(--font-stack);
      background-color: var(--cream-bg);
      color: var(--text-dark);
      line-height: 1.7;
      font-size: 1rem;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition-smooth);
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    /* 导航 */
    .nav-bar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 50;
      background: rgba(28, 28, 28, 0.8);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(240,160,75,0.35);
      padding: 0 24px;
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      max-width: 1200px;
      margin: 0 auto;
      height: 72px;
    }
    .logo {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--primary-orange);
      letter-spacing: 1px;
    }
    .nav-links {
      display: flex;
      gap: 2rem;
      align-items: center;
    }
    .nav-links a {
      color: #F5F0E8;
      font-weight: 500;
      font-size: 1rem;
      position: relative;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      width: 0;
      height: 2px;
      bottom: -4px;
      left: 0;
      background: var(--amber-glow);
      transition: width 0.2s ease;
    }
    .nav-links a:hover {
      color: var(--amber-glow);
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .mega-trigger {
      cursor: pointer;
      color: #F5F0E8;
      font-weight: 500;
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 8px 12px;
      border-radius: 30px;
      transition: background 0.2s;
    }
    .mega-trigger:hover {
      background: rgba(255,255,255,0.1);
      color: var(--amber-glow);
    }
    .mega-panel {
      position: absolute;
      top: 72px;
      right: 24px;
      width: 300px;
      background: rgba(28, 28, 28, 0.9);
      backdrop-filter: blur(24px);
      -webkit-backdrop-filter: blur(24px);
      border: 1px solid rgba(232,184,109,0.35);
      border-radius: 16px;
      padding: 20px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.5);
      opacity: 0;
      visibility: hidden;
      transform: translateY(10px);
      transition: 0.2s ease;
      display: flex;
      flex-direction: column;
      gap: 16px;
      z-index: 55;
    }
    .mega-wrapper:hover .mega-panel,
    .mega-trigger:focus-within + .mega-panel {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }
    .mega-tag {
      color: #E8D5B5;
      font-size: 0.9rem;
      padding: 6px 0;
      border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    .mega-slogan {
      color: var(--honey-gold);
      font-weight: 600;
      background: rgba(212,120,59,0.15);
      padding: 12px;
      border-radius: 12px;
      text-align: center;
    }
    .mobile-menu-icon {
      display: none;
      font-size: 1.8rem;
      color: #F5F0E8;
      cursor: pointer;
    }
    @media (max-width: 840px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: rgba(20,20,20,0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--amber-glow);
      }
      .nav-links.active {
        display: flex;
      }
      .mobile-menu-icon {
        display: block;
      }
      .mega-wrapper {
        width: 100%;
      }
      .mega-panel {
        position: static;
        width: 100%;
        opacity: 1;
        visibility: visible;
        transform: none;
        margin-top: 8px;
      }
    }
    /* 区块通用 */
    section {
      padding: 100px 0;
    }
    @media (max-width: 768px) {
      section {
        padding: 70px 0;
      }
    }
    h2 {
      font-size: 2rem;
      font-weight: 600;
      margin-bottom: 2rem;
      color: var(--dark-rock);
      text-align: center;
    }
    /* Hero */
    .hero {
      min-height: 100vh;
      background: linear-gradient(135deg, #2C2C2C 0%, #1A1A1A 100%);
      position: relative;
      display: flex;
      align-items: center;
      overflow: hidden;
    }
    .hero::before {
      content: '';
      position: absolute;
      top: -20%;
      right: -10%;
      width: 70%;
      height: 120%;
      background: radial-gradient(circle at 30% 40%, rgba(240,160,75,0.18) 0%, transparent 70%);
      pointer-events: none;
    }
    .hero-content {
      display: flex;
      align-items: center;
      gap: 3rem;
      position: relative;
      z-index: 2;
    }
    .hero-text {
      flex: 1;
    }
    .hero h1 {
      font-size: 3.5rem;
      font-weight: 700;
      color: #FFFFFF;
      line-height: 1.3;
      margin-bottom: 1.5rem;
    }
    .hero h1 span {
      color: var(--honey-gold);
    }
    .hero p {
      font-size: 1.2rem;
      color: rgba(255,255,255,0.8);
      margin-bottom: 2.5rem;
    }
    .btn-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--primary-orange);
      color: white;
      padding: 14px 32px;
      border-radius: 30px;
      font-weight: 600;
      border: none;
      box-shadow: 0 8px 20px rgba(212,120,59,0.3);
      transition: 0.25s;
      display: inline-block;
      text-align: center;
    }
    .btn-primary:hover {
      background: var(--primary-deep);
      box-shadow: var(--glow-amber);
      transform: translateY(-2px);
      color: white;
    }
    .btn-outline {
      border: 2px solid var(--primary-orange);
      color: var(--primary-orange);
      background: transparent;
      padding: 14px 32px;
      border-radius: 30px;
      font-weight: 600;
    }
    .btn-outline:hover {
      background: rgba(212,120,59,0.15);
      box-shadow: 0 0 12px rgba(240,160,75,0.4);
    }
    .hero-image {
      flex: 1;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      border-radius: 24px;
      min-height: 380px;
      box-shadow: 0 20px 40px rgba(0,0,0,0.5);
      filter: brightness(0.9) contrast(1.1);
    }
    @media (max-width: 768px) {
      .hero-content {
        flex-direction: column;
        text-align: center;
      }
      .hero h1 {
        font-size: 2.6rem;
      }
      .hero-image {
        width: 100%;
        min-height: 260px;
      }
    }
    /* 卡片玻璃 */
    .glass-card {
      background: var(--glass-bg);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--glass-border);
      border-radius: var(--radius-card);
      padding: 28px;
      box-shadow: var(--shadow-card);
      transition: 0.3s;
    }
    .glass-card:hover {
      transform: translateY(-4px);
      box-shadow: 0 18px 36px rgba(44,44,44,0.1), 0 0 0 1px rgba(232,184,109,0.5);
    }
    .pain-grid, .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3,1fr);
      gap: 28px;
    }
    @media (max-width: 768px) {
      .pain-grid, .testimonial-grid {
        grid-template-columns: 1fr;
      }
    }
    .solutions-block {
      display: flex;
      gap: 3rem;
      align-items: center;
      margin-bottom: 80px;
    }
    .solutions-block.reverse {
      flex-direction: row-reverse;
    }
    .solutions-text {
      flex: 1;
    }
    .solutions-img {
      flex: 1;
      border-radius: 20px;
      overflow: hidden;
      box-shadow: 0 14px 28px rgba(0,0,0,0.08);
    }
    @media (max-width: 768px) {
      .solutions-block, .solutions-block.reverse {
        flex-direction: column;
      }
    }
    .results-grid {
      display: grid;
      grid-template-columns: repeat(4,1fr);
      gap: 24px;
    }
    @media (max-width: 768px) {
      .results-grid {
        grid-template-columns: repeat(2,1fr);
      }
    }
    .dark-glass {
      background: rgba(28,28,28,0.6);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255,255,255,0.1);
      color: white;
      text-align: center;
      padding: 32px 16px;
    }
    .big-number {
      font-size: 2.8rem;
      font-weight: 700;
      color: var(--amber-glow);
    }
    .faq-section {
      background: var(--warm-gray);
    }
    .accordion-title {
      font-weight: 600;
      color: var(--dark-rock);
      border-radius: 12px;
    }
    .accordion-title::before {
      color: var(--primary-orange);
      margin-right: 8px;
    }
    .cta-final {
      background: linear-gradient(135deg, #D4783B, #F0A04B);
      text-align: center;
    }
    .footer {
      background: var(--charcoal);
      color: #C0BAB0;
      padding: 60px 0 30px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
    }
    @media (max-width: 768px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }