/* roulang page: index */
:root {
      --primary-deep: #4A1A3D;
      --primary-dark: #6B2D5B;
      --accent-gold: #D4AF37;
      --accent-gold-dark: #B4942E;
      --charcoal: #1E1E1E;
      --warm-white: #F9F6F0;
      --clay-orange: #C45A3C;
      --text-body: #333333;
      --text-light: #666666;
      --border-light: #E0DCD5;
      --card-bg: #FFFFFF;
      --shadow-card: 0 10px 30px -10px rgba(0,0,0,0.08), 0 4px 6px rgba(0,0,0,0.04);
      --shadow-button: 0 4px 12px rgba(212, 175, 55, 0.3);
      --radius-sm: 4px;
      --radius-md: 8px;
      --spacing-xs: 8px;
      --spacing-sm: 16px;
      --spacing-md: 24px;
      --spacing-lg: 40px;
      --spacing-xl: 64px;
      --spacing-2xl: 100px;
      --font-title: 'Oswald', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --max-width: 1280px;
      --nav-height: 80px;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: var(--font-body);
      background-color: var(--warm-white);
      color: var(--text-body);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 var(--spacing-md);
    }
    h1, h2, h3, h4 {
      font-family: var(--font-title);
      letter-spacing: 0.5px;
    }
    h1 {
      font-size: 48px;
      line-height: 1.2;
      font-weight: 700;
      color: var(--charcoal);
    }
    h2 {
      font-size: 36px;
      line-height: 1.3;
      font-weight: 600;
      color: var(--charcoal);
      margin-bottom: var(--spacing-md);
      display: inline-block;
      position: relative;
    }
    h2::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -10px;
      width: 60px;
      height: 3px;
      background-color: var(--accent-gold);
      border-radius: 2px;
    }
    .section-title-wrapper {
      margin-bottom: var(--spacing-xl);
      text-align: left;
    }
    .btn {
      display: inline-block;
      font-family: var(--font-title);
      font-weight: 700;
      font-size: 18px;
      letter-spacing: 0.8px;
      text-transform: uppercase;
      padding: 14px 32px;
      border-radius: var(--radius-sm);
      text-decoration: none;
      transition: all 0.25s ease;
      cursor: pointer;
      border: 2px solid transparent;
      text-align: center;
    }
    .btn-primary {
      background: var(--accent-gold);
      color: var(--primary-deep);
      border-color: var(--accent-gold);
      box-shadow: 0 4px 10px rgba(212, 175, 55, 0.2);
    }
    .btn-primary:hover {
      background: var(--accent-gold-dark);
      border-color: var(--accent-gold-dark);
      box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.3), 0 8px 18px rgba(0,0,0,0.15);
      transform: translateY(-2px);
    }
    .btn-outline {
      background: transparent;
      color: var(--accent-gold);
      border-color: var(--accent-gold);
    }
    .btn-outline:hover {
      background: var(--accent-gold);
      color: var(--primary-deep);
      box-shadow: 0 8px 18px rgba(0,0,0,0.1);
    }
    /* 导航 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: var(--nav-height);
      background: rgba(30, 18, 28, 0.88);
      backdrop-filter: blur(10px);
      display: flex;
      align-items: center;
      z-index: 1000;
      border-bottom: 1px solid rgba(212, 175, 55, 0.2);
      transition: background 0.3s;
    }
    .navbar.scrolled {
      background: rgba(20, 12, 18, 0.96);
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 var(--spacing-md);
    }
    .logo {
      font-family: var(--font-title);
      font-size: 28px;
      font-weight: 700;
      color: var(--warm-white);
      letter-spacing: 2px;
      display: flex;
      align-items: center;
      gap: 8px;
      text-decoration: none;
    }
    .logo i {
      color: var(--accent-gold);
      font-size: 32px;
    }
    .nav-menu {
      display: flex;
      list-style: none;
      gap: var(--spacing-lg);
      align-items: center;
    }
    .nav-link {
      color: var(--warm-white);
      text-decoration: none;
      font-weight: 500;
      font-size: 1rem;
      position: relative;
      padding: 8px 0;
      transition: color 0.2s;
    }
    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent-gold);
      transition: width 0.25s;
    }
    .nav-link:hover {
      color: var(--accent-gold);
    }
    .nav-link:hover::after {
      width: 100%;
    }
    .nav-cta {
      margin-left: var(--spacing-sm);
    }
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      background: none;
      border: none;
    }
    .hamburger span {
      width: 28px;
      height: 3px;
      background: var(--warm-white);
      border-radius: 2px;
      transition: 0.3s;
    }
    /* 移动端导航面板 */
    @media (max-width: 768px) {
      .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        background: rgba(20, 12, 18, 0.98);
        flex-direction: column;
        padding: var(--spacing-xl) var(--spacing-md);
        gap: var(--spacing-lg);
        transform: translateY(-150%);
        transition: transform 0.4s ease;
        backdrop-filter: blur(12px);
      }
      .nav-menu.active {
        transform: translateY(0);
      }
      .hamburger {
        display: flex;
      }
      .nav-cta {
        margin-left: 0;
        width: 100%;
      }
    }
    /* Hero */
    .hero {
      padding: calc(var(--nav-height) + 60px) 0 80px;
      background: linear-gradient(135deg, #3a142e 0%, #6B2D5B 100%);
      position: relative;
      overflow: hidden;
      color: white;
    }
    .hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      opacity: 0.2;
      mix-blend-mode: overlay;
    }
    .hero-grid {
      display: flex;
      align-items: center;
      gap: var(--spacing-xl);
      position: relative;
      z-index: 2;
    }
    .hero-text {
      flex: 1;
    }
    .hero-text h1 {
      color: white;
      font-size: 52px;
      margin-bottom: var(--spacing-md);
      text-shadow: 0 4px 12px rgba(0,0,0,0.6);
    }
    .highlight {
      background: var(--accent-gold);
      color: var(--primary-deep);
      padding: 0 10px;
      display: inline-block;
      font-weight: 700;
    }
    .hero-sub {
      font-size: 20px;
      color: rgba(255,255,255,0.9);
      margin-bottom: var(--spacing-lg);
      max-width: 550px;
    }
    .hero-buttons {
      display: flex;
      gap: var(--spacing-md);
      flex-wrap: wrap;
    }
    .hero-image {
      flex: 1;
      text-align: right;
    }
    .hero-image img {
      max-width: 100%;
      height: auto;
      border-radius: var(--radius-md);
      box-shadow: 0 20px 40px rgba(0,0,0,0.5);
      filter: brightness(0.95);
    }
    @media (max-width: 768px) {
      .hero-grid {
        flex-direction: column;
      }
      .hero-text h1 {
        font-size: 36px;
      }
      .hero-image {
        text-align: center;
        margin-top: var(--spacing-lg);
      }
    }
    /* 板块通用 */
    section {
      padding: var(--spacing-2xl) 0;
    }
    /* 核心优势 非对称 */
    .advantages-grid {
      display: flex;
      gap: var(--spacing-xl);
      align-items: center;
    }
    .adv-visual {
      flex: 1.2;
    }
    .adv-visual img {
      width: 100%;
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-card);
    }
    .adv-cards {
      flex: 1;
      display: flex;
      flex-direction: column;
      gap: var(--spacing-md);
    }
    .adv-card {
      background: var(--card-bg);
      padding: var(--spacing-md);
      border-left: 5px solid var(--accent-gold);
      box-shadow: var(--shadow-card);
      transform: skewX(-2deg);
      transition: 0.2s;
    }
    .adv-card:hover {
      transform: skewX(0);
      box-shadow: 0 15px 25px rgba(0,0,0,0.12);
    }
    .adv-card h3 {
      font-size: 22px;
      color: var(--primary-deep);
    }
    @media (max-width: 768px) {
      .advantages-grid {
        flex-direction: column;
      }
    }
    /* 冠军方案 横向卡片 */
    .solutions-scroll {
      display: flex;
      gap: var(--spacing-md);
      overflow-x: auto;
      padding-bottom: var(--spacing-sm);
      scroll-snap-type: x mandatory;
    }
    .solution-card {
      flex: 0 0 340px;
      background: white;
      border-radius: var(--radius-sm);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      scroll-snap-align: start;
      transition: transform 0.3s, box-shadow 0.3s;
    }
    .solution-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 0 0 3px var(--accent-gold), 0 20px 35px rgba(0,0,0,0.15);
    }
    .solution-img {
      height: 200px;
      background-size: cover;
    }
    .solution-body {
      padding: var(--spacing-md);
    }
    .tag {
      background: var(--clay-orange);
      color: white;
      padding: 4px 12px;
      font-size: 13px;
      border-radius: 20px;
    }
    /* 证言错落网格 */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: var(--spacing-md);
    }
    .testimonial-large {
      grid-column: span 2;
      background: white;
      padding: var(--spacing-lg);
      border-radius: var(--radius-sm);
      box-shadow: var(--shadow-card);
    }
    .testimonial-small {
      background: white;
      padding: var(--spacing-md);
      border-radius: var(--radius-sm);
    }
    @media (max-width: 768px) {
      .testimonials-grid {
        grid-template-columns: 1fr;
      }
      .testimonial-large {
        grid-column: span 1;
      }
    }
    /* FAQ */
    .faq-item {
      background: white;
      margin-bottom: var(--spacing-sm);
      border-radius: var(--radius-sm);
      box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    }
    .faq-question {
      padding: 20px;
      font-weight: 700;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
      color: var(--primary-deep);
    }
    .faq-answer {
      padding: 0 20px 20px;
      display: none;
      color: var(--text-body);
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    /* CTA */
    .cta-block {
      background: linear-gradient(135deg, #2d1122, #4A1A3D);
      color: white;
      text-align: center;
    }
    .pulse-btn {
      animation: pulse 2s infinite;
    }
    @keyframes pulse {
      0% { box-shadow: 0 0 0 0 rgba(212,175,55,0.6); }
      70% { box-shadow: 0 0 0 16px rgba(212,175,55,0); }
      100% { box-shadow: 0 0 0 0 rgba(212,175,55,0); }
    }
    footer {
      background: var(--primary-deep);
      color: #ccc;
      padding: 60px 0 30px;
    }
    .footer-grid {
      display: flex;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 30px;
    }