/* roulang page: index */
:root {
      --deep-olive: #1E2F2B;
      --warm-gold: #C8A96E;
      --warm-white: #F7F5F0;
      --charcoal: #2C2C2C;
      --burgundy: #8B3A3A;
      --border-light: #E8E4DB;
      --white: #FFFFFF;
      --gold-light: rgba(200, 169, 110, 0.15);
      --shadow-card: 0 4px 20px rgba(0,0,0,0.04);
      --shadow-hover: 0 8px 30px rgba(0,0,0,0.08);
      --radius-card: 12px;
      --radius-btn: 8px;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
      --max-width: 1280px;
      --section-gap: 120px;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--warm-white);
      color: var(--charcoal);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 32px;
    }

    /* 导航栏 */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      background: rgba(247, 245, 240, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
      z-index: 100;
      padding: 0 16px;
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      max-width: var(--max-width);
      margin: 0 auto;
      height: 68px;
    }
    .logo {
      font-size: 22px;
      font-weight: 700;
      color: var(--deep-olive);
      letter-spacing: -0.3px;
      text-decoration: none;
      white-space: nowrap;
    }
    .nav-links {
      display: flex;
      gap: 28px;
      align-items: center;
    }
    .nav-links a {
      font-size: 15px;
      font-weight: 500;
      color: var(--charcoal);
      text-decoration: none;
      position: relative;
      padding: 4px 0;
      transition: color 0.2s;
      white-space: nowrap;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--warm-gold);
      transition: width 0.25s ease;
    }
    .nav-links a:hover {
      color: var(--warm-gold);
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .burger {
      display: none;
      flex-direction: column;
      gap: 6px;
      cursor: pointer;
      background: transparent;
      border: none;
      padding: 8px;
    }
    .burger span {
      display: block;
      width: 26px;
      height: 2px;
      background: var(--deep-olive);
      border-radius: 2px;
      transition: 0.2s ease;
    }
    .mobile-menu {
      display: none;
      position: fixed;
      top: 68px;
      left: 0;
      right: 0;
      bottom: 0;
      background: var(--deep-olive);
      flex-direction: column;
      padding: 32px;
      gap: 24px;
      z-index: 99;
    }
    .mobile-menu a {
      color: var(--warm-white);
      font-size: 20px;
      font-weight: 500;
      text-decoration: none;
      border-bottom: 1px solid rgba(255,255,255,0.15);
      padding-bottom: 12px;
    }
    .mobile-menu.active {
      display: flex;
    }

    /* 通用板块 */
    section {
      padding: var(--section-gap) 0;
    }
    .section-title {
      font-size: 32px;
      font-weight: 600;
      margin-bottom: 48px;
      color: var(--deep-olive);
      letter-spacing: -0.02em;
    }
    .section-sub {
      font-size: 18px;
      color: #5A5A5A;
      margin-bottom: 48px;
      max-width: 700px;
    }

    /* Hero */
    .hero {
      position: relative;
      background: linear-gradient(135deg, #1E2F2B 0%, #2A3F38 100%);
      min-height: 90vh;
      display: flex;
      align-items: center;
      color: white;
      overflow: hidden;
      margin-top: 0;
      padding: 140px 0 100px;
    }
    .hero-bg {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.3;
      mix-blend-mode: overlay;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 700px;
    }
    .hero h1 {
      font-size: 48px;
      font-weight: 700;
      letter-spacing: -0.02em;
      line-height: 1.3;
      margin-bottom: 20px;
      color: white;
    }
    .hero p {
      font-size: 18px;
      color: rgba(255,255,255,0.9);
      margin-bottom: 36px;
      max-width: 600px;
    }
    .btn-primary {
      background: var(--warm-gold);
      color: var(--deep-olive);
      padding: 14px 36px;
      border-radius: var(--radius-btn);
      font-weight: 700;
      font-size: 17px;
      text-decoration: none;
      display: inline-block;
      transition: all 0.25s;
      border: none;
      cursor: pointer;
    }
    .btn-primary:hover {
      background: #dbb878;
      box-shadow: 0 8px 20px rgba(0,0,0,0.15);
      transform: translateY(-1px);
    }
    .btn-outline {
      border: 2px solid var(--deep-olive);
      background: transparent;
      color: var(--deep-olive);
      padding: 12px 32px;
      border-radius: var(--radius-btn);
      font-weight: 600;
      text-decoration: none;
      display: inline-block;
      transition: 0.25s;
    }
    .btn-outline:hover {
      background: var(--deep-olive);
      color: white;
    }

    /* 痛点区 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .pain-item {
      background: var(--white);
      padding: 32px 24px;
      border-radius: var(--radius-card);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      text-align: center;
    }
    .pain-icon {
      font-size: 36px;
      color: var(--warm-gold);
      margin-bottom: 16px;
    }

    /* 解决方案 非对称布局 */
    .solutions-grid {
      display: grid;
      grid-template-columns: 2fr 1fr;
      gap: 32px;
    }
    .solution-main {
      background: var(--white);
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      display: flex;
      flex-direction: column;
    }
    .solution-main img {
      width: 100%;
      height: 260px;
      object-fit: cover;
      background: #EAE7DF;
    }
    .solution-main .card-text {
      padding: 28px;
    }
    .solution-side {
      display: flex;
      flex-direction: column;
      gap: 24px;
    }
    .solution-card {
      background: var(--white);
      border-radius: var(--radius-card);
      padding: 24px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-card);
      transition: 0.25s;
      display: flex;
      gap: 16px;
      align-items: center;
    }
    .solution-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .card-img-placeholder {
      width: 80px;
      height: 80px;
      background: #EAE7DF;
      border-radius: 10px;
      background-image: url('/assets/images/coverpic/cover-2.webp');
      background-size: cover;
    }

    /* 成果数据 */
    .results {
      background: var(--deep-olive);
      color: var(--warm-white);
    }
    .stats {
      display: flex;
      justify-content: space-around;
      flex-wrap: wrap;
      gap: 40px;
    }
    .stat-item {
      text-align: center;
    }
    .stat-number {
      font-size: 48px;
      font-weight: 700;
      color: var(--burgundy);
      line-height: 1.2;
    }

    /* 证言 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .testimonial-card {
      background: var(--white);
      padding: 32px;
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      position: relative;
    }
    .quote-mark {
      font-size: 64px;
      color: rgba(200,169,110,0.25);
      position: absolute;
      top: 10px;
      left: 20px;
    }
    .avatar {
      width: 48px;
      height: 48px;
      background: #E8E4DB;
      border-radius: 50%;
      margin-top: 20px;
    }

    /* FAQ 手风琴 */
    .faq-item {
      background: var(--white);
      border: 1px solid var(--border-light);
      border-radius: 10px;
      margin-bottom: 12px;
    }
    .faq-question {
      padding: 18px 24px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 18px;
    }
    .faq-answer {
      padding: 0 24px 18px;
      display: none;
      color: #444;
    }
    .faq-item.active .faq-answer {
      display: block;
    }

    /* CTA */
    .cta-band {
      background: linear-gradient(135deg, #C8A96E, #B8995A);
      color: var(--deep-olive);
      text-align: center;
      padding: 80px 20px;
    }

    /* Footer */
    .footer {
      background: var(--deep-olive);
      color: #B8B5AD;
      padding: 60px 0 30px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
    }

    @media (max-width: 1024px) {
      .solutions-grid { grid-template-columns: 1fr; }
      .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 768px) {
      .container { padding: 0 20px; }
      .nav-links { display: none; }
      .burger { display: flex; }
      .hero h1 { font-size: 32px; }
      .pain-grid, .testimonial-grid, .stats { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .section-title { font-size: 26px; }
    }