/* roulang page: index */
:root {
      --imperial-green: #1A472A;
      --pristine-orange: #F5A623;
      --orange-hover: #E5941E;
      --charcoal-black: #2C2C2C;
      --warm-white: #F9F9F2;
      --card-white: #FFFFFF;
      --soft-border: rgba(0,0,0,0.05);
      --shadow-card: 0 8px 30px rgba(0,0,0,0.06);
      --shadow-hover: 0 12px 40px rgba(0,0,0,0.12);
      --radius-card: 16px;
      --radius-btn: 40px;
      --radius-input: 8px;
      --font-mont: 'Montserrat', sans-serif;
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
      --transition-default: all 0.25s ease;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--warm-white);
      color: var(--charcoal-black);
      line-height: 1.5;
      font-size: 16px;
    }
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 32px;
    }
    @media (max-width: 768px) {
      .container {
        padding: 0 20px;
      }
    }
    /* 导航 */
    .nav {
      position: sticky;
      top: 0;
      z-index: 50;
      background: var(--card-white);
      box-shadow: 0 2px 20px rgba(0,0,0,0.04);
      height: 72px;
      display: flex;
      align-items: center;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 700;
      font-size: 24px;
      color: var(--imperial-green);
      letter-spacing: 0.5px;
      text-decoration: none;
    }
    .logo i {
      color: var(--pristine-orange);
      font-size: 28px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-links a {
      text-decoration: none;
      color: var(--charcoal-black);
      font-weight: 500;
      font-size: 18px;
      transition: color 0.2s;
    }
    .nav-links a:hover {
      color: var(--pristine-orange);
    }
    .cta-btn {
      background: var(--pristine-orange);
      color: white;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      font-weight: 700;
      letter-spacing: 0.5px;
      text-decoration: none;
      transition: var(--transition-default);
      display: inline-block;
      font-family: var(--font-mont);
      text-transform: uppercase;
      font-size: 16px;
    }
    .cta-btn:hover {
      background: var(--orange-hover);
      transform: scale(1.04);
      box-shadow: 0 10px 25px rgba(245,166,35,0.4);
    }
    .desktop-nav {
      display: flex;
    }
    .mobile-nav {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      background: var(--card-white);
      border-top: 1px solid var(--soft-border);
      box-shadow: 0 -4px 15px rgba(0,0,0,0.05);
      padding: 12px 24px;
      justify-content: space-around;
      align-items: center;
      backdrop-filter: blur(8px);
      background: rgba(255,255,255,0.95);
      z-index: 100;
    }
    .mobile-nav a {
      font-size: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 4px;
      color: var(--charcoal-black);
      text-decoration: none;
      font-weight: 500;
    }
    .mobile-nav a i {
      font-size: 20px;
      color: var(--imperial-green);
    }
    .mobile-nav a.active i {
      color: var(--pristine-orange);
    }
    @media (max-width: 768px) {
      .desktop-nav {
        display: none;
      }
      .mobile-nav {
        display: flex;
      }
      .nav {
        height: 64px;
      }
      .logo {
        font-size: 20px;
      }
    }
    /* Hero */
    .hero {
      background: linear-gradient(135deg, rgba(26,71,42,0.6) 0%, rgba(26,71,42,0.75) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      min-height: 85vh;
      display: flex;
      align-items: center;
      color: white;
      position: relative;
    }
    .hero-content {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      width: 100%;
    }
    .hero-text {
      flex: 1 1 500px;
    }
    .hero h1 {
      font-size: 56px;
      font-weight: 700;
      line-height: 1.2;
      margin-bottom: 20px;
      color: white;
      font-family: var(--font-mont);
    }
    .hero-sub {
      font-size: 22px;
      margin-bottom: 32px;
      opacity: 0.9;
    }
    .hero-actions {
      display: flex;
      gap: 20px;
      align-items: center;
      flex-wrap: wrap;
    }
    .link-under {
      color: white;
      font-weight: 500;
      text-decoration: underline;
      text-underline-offset: 3px;
    }
    .score-float {
      background: var(--card-white);
      color: var(--charcoal-black);
      border-radius: 20px;
      padding: 20px 28px;
      box-shadow: var(--shadow-card);
      display: inline-flex;
      align-items: center;
      gap: 20px;
      font-family: var(--font-mont);
      font-weight: 800;
      font-size: 28px;
      background: rgba(255,255,255,0.9);
      backdrop-filter: blur(10px);
    }
    @media (max-width: 768px) {
      .hero h1 {
        font-size: 36px;
      }
      .hero-content {
        flex-direction: column;
      }
      .score-float {
        margin-top: 30px;
      }
    }
    /* 板块通用 */
    section {
      padding: 90px 0;
    }
    h2 {
      font-size: 40px;
      font-weight: 600;
      color: var(--imperial-green);
      margin-bottom: 24px;
      text-align: center;
    }
    /* 解决方案 */
    .solution-grid {
      display: grid;
      grid-template-columns: repeat(3,1fr);
      gap: 28px;
      margin-top: 48px;
    }
    .pain-card {
      background: var(--card-white);
      border-radius: var(--radius-card);
      padding: 32px 24px;
      box-shadow: var--shadow-card;
      transition: var(--transition-default);
    }
    .pain-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-5px);
    }
    .icon-orange {
      background: var(--pristine-orange);
      width: 48px;
      height: 48px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: 24px;
      margin-bottom: 20px;
    }
    .pain-title {
      font-size: 22px;
      font-weight: 600;
      margin-bottom: 16px;
    }
    @media (max-width: 768px) {
      .solution-grid {
        grid-template-columns: 1fr;
      }
    }
    /* 成果滚动 */
    .stats-scroll {
      display: flex;
      gap: 30px;
      overflow-x: auto;
      padding: 24px 0 12px;
      scrollbar-width: thin;
    }
    .stat-card {
      min-width: 220px;
      background: white;
      border-radius: 20px;
      padding: 28px 20px;
      box-shadow: 0 8px 22px rgba(0,0,0,0.04);
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      border-left: 5px solid var(--pristine-orange);
    }
    .stat-number {
      font-size: 48px;
      font-weight: 800;
      font-family: var(--font-mont);
      color: var(--pristine-orange);
    }
    /* 证言 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(2,1fr);
      gap: 30px;
      margin-top: 40px;
    }
    .testimonial {
      background: var(--card-white);
      border-radius: 28px;
      padding: 28px;
      display: flex;
      gap: 20px;
      align-items: flex-start;
      box-shadow: var(--shadow-card);
    }
    .testimonial img {
      width: 56px;
      height: 56px;
      border-radius: 50%;
      object-fit: cover;
      border: 3px solid var(--pristine-orange);
    }
    .quote {
      font-style: italic;
      line-height: 1.6;
    }
    @media (max-width: 768px) {
      .testimonial-grid {
        grid-template-columns: 1fr;
      }
    }
    /* FAQ */
    .faq-item {
      border-bottom: 1px solid #d4e2d4;
      padding: 22px 0;
    }
    .faq-question {
      display: flex;
      justify-content: space-between;
      font-weight: 600;
      font-size: 18px;
      cursor: pointer;
      color: var(--imperial-green);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
      color: #2c2c2c;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      margin-top: 12px;
    }
    /* CTA */
    .cta-section {
      background: var(--imperial-green);
      color: white;
      text-align: center;
      border-radius: 40px;
      padding: 60px 40px;
      margin: 40px 0;
    }
    .form-row {
      display: flex;
      max-width: 480px;
      margin: 32px auto 0;
      gap: 12px;
    }
    input {
      flex:1;
      padding: 16px 20px;
      border-radius: 40px;
      border: none;
      background: white;
    }
    .footer {
      background: var(--charcoal-black);
      color: #ccc;
      padding: 70px 0 30px;
    }
    .footer a {
      color: #ddd;
    }