/* roulang page: index */
:root {
      --primary: #0B5E3B;
      --primary-dark: #094D30;
      --accent: #F5A623;
      --accent-dark: #E08E0B;
      --dark-bg: #1A1A2E;
      --bg: #F9FAFB;
      --card-bg: #FFFFFF;
      --text: #1F2937;
      --text-light: #6B7280;
      --success: #10B981;
      --border: #E5E7EB;
      --radius-sm: 10px;
      --radius: 16px;
      --radius-pill: 50px;
      --shadow: 0 4px 20px rgba(0,0,0,0.06);
      --shadow-hover: 0 12px 32px rgba(0,0,0,0.1);
      --transition: 0.3s ease;
      --white-alpha: rgba(255,255,255,0.95);
    }

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

    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "WenQuanYi Micro Hei", sans-serif;
      font-size: 1rem;
      line-height: 1.7;
      color: var(--text);
      background-color: var(--bg);
      -webkit-font-smoothing: antialiased;
    }

    a { text-decoration: none; color: inherit; transition: var(--transition); }
    img { max-width: 100%; height: auto; display: block; }
    button, input { font-family: inherit; }
    .container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

    /* 辅助类 */
    .text-accent { color: var(--accent); }
    .bg-primary { background-color: var(--primary); }
    .section-padding { padding: 5rem 0; }

    h1, h2, h3 { color: var(--text); line-height: 1.3; }
    h1 { font-size: 3.5rem; font-weight: 800; letter-spacing: -0.02em; color: #fff; }
    h2 { font-size: 2.4rem; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 1.5rem; }
    h3 { font-size: 1.5rem; font-weight: 600; margin-bottom: 0.75rem; }

    .stat-num {
      font-size: 2.5rem; font-weight: 800; color: var(--accent);
      font-variant-numeric: tabular-nums; letter-spacing: -0.5px;
    }

    /* 按钮样式 */
    .btn-primary {
      background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
      color: white; font-weight: 700; padding: 14px 36px; border-radius: var(--radius-pill);
      border: none; cursor: pointer; transition: var(--transition); display: inline-block;
      text-align: center; box-shadow: 0 4px 12px rgba(245,166,35,0.25);
    }
    .btn-primary:hover {
      filter: brightness(1.1); box-shadow: 0 0 20px rgba(245,166,35,0.4);
      color: white; transform: translateY(-1px);
    }

    .btn-outline {
      background: transparent; border: 2px solid var(--primary); color: var(--primary);
      font-weight: 700; padding: 14px 36px; border-radius: var(--radius-pill);
      display: inline-block; text-align: center; transition: var(--transition);
    }
    .btn-outline:hover { background: rgba(11,94,59,0.08); color: var(--primary); }

    .btn-outline-white {
      background: transparent; border: 2px solid white; color: white;
      font-weight: 700; padding: 14px 36px; border-radius: var(--radius-pill);
      display: inline-block; transition: var(--transition);
    }
    .btn-outline-white:hover { background: rgba(255,255,255,0.15); }

    /* 卡片样式 */
    .card {
      background: var(--card-bg); border-radius: var(--radius);
      box-shadow: var(--shadow); padding: 2rem; transition: var(--transition);
      height: 100%; display: flex; flex-direction: column;
    }
    .card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }

    .icon-circle {
      width: 56px; height: 56px; background: rgba(11,94,59,0.1);
      border-radius: 50%; display: flex; align-items: center; justify-content: center;
      margin-bottom: 1.2rem; color: var(--primary); font-size: 1.8rem;
    }

    /* 导航 */
    .site-header {
      position: fixed; top: 0; width: 100%; z-index: 1000;
      background: var(--white-alpha); backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border); box-shadow: 0 1px 3px rgba(0,0,0,0.05);
      padding: 0.8rem 0;
    }
    .nav-container {
      max-width: 1200px; margin: 0 auto; padding: 0 1.5rem;
      display: flex; align-items: center; justify-content: space-between;
    }
    .logo-area {
      display: flex; align-items: center; gap: 0.5rem;
      font-weight: 700; font-size: 1.25rem; color: var(--primary);
    }
    .logo-icon { font-size: 1.8rem; color: var(--accent); }
    .nav-links { display: flex; gap: 2rem; align-items: center; }
    .nav-links a {
      color: #4B5563; font-weight: 500; position: relative;
    }
    .nav-links a:hover, .nav-links a.active { color: var(--primary); }
    .nav-links a.active::after {
      content: ''; position: absolute; bottom: -8px; left: 0; width: 100%;
      height: 3px; background: var(--primary); border-radius: 3px;
    }
    .search-box input {
      border-radius: 30px; border: 1px solid #ddd; padding: 0.5rem 1.2rem;
      font-size: 0.9rem; background: white; width: 160px;
    }

    /* 汉堡菜单按钮 */
    .menu-icon { display: none; cursor: pointer; font-size: 1.8rem; color: var(--text); }

    @media (max-width: 1024px) {
      .nav-links { display: none; }
      .search-box { display: none; }
      .menu-icon { display: block; }
      .nav-container .btn-primary { display: none; }
    }

    /* 移动端菜单 */
    .mobile-menu {
      display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%;
      background: var(--white-alpha); backdrop-filter: blur(20px); z-index: 2000;
      flex-direction: column; align-items: center; justify-content: center; gap: 2rem;
    }
    .mobile-menu a { font-size: 1.4rem; font-weight: 600; color: var(--text); }
    .mobile-menu .close-icon { position: absolute; top: 1.5rem; right: 2rem; font-size: 2rem; }

    /* Hero */
    .hero {
      background: linear-gradient(135deg, #0B5E3B 0%, #1A1A2E 100%);
      position: relative; overflow: hidden; padding: 8rem 0 6rem; margin-top: 0;
    }
    .hero::before {
      content: ''; position: absolute; inset: 0; opacity: 0.05;
      background-image: repeating-linear-gradient(0deg, transparent, transparent 30px, rgba(255,255,255,0.1) 30px, rgba(255,255,255,0.1) 31px),
                        repeating-linear-gradient(90deg, transparent, transparent 30px, rgba(255,255,255,0.1) 30px, rgba(255,255,255,0.1) 31px);
    }
    .hero-content { position: relative; z-index: 2; display: flex; align-items: center; gap: 3rem; }
    .hero-text { flex: 1; max-width: 650px; }
    .hero-text h1 { margin-bottom: 1.5rem; }
    .hero-text p { font-size: 1.25rem; color: rgba(255,255,255,0.9); margin-bottom: 2rem; }
    .hero-buttons { display: flex; gap: 1rem; flex-wrap: wrap; }
    .hero-visual {
      flex: 1; display: flex; justify-content: center;
    }
    .live-card-mock {
      background: rgba(255,255,255,0.15); backdrop-filter: blur(12px);
      border-radius: var(--radius); padding: 2rem; transform: rotate(3deg);
      box-shadow: 0 20px 40px rgba(0,0,0,0.3); color: white; min-width: 260px;
    }
    .live-indicator { display: flex; align-items: center; gap: 0.4rem; color: var(--success); margin-bottom: 1rem; }
    .blink { width: 10px; height: 10px; background: var(--success); border-radius: 50%; animation: pulse 1.4s infinite; }
    @keyframes pulse { 0% { opacity: 1; } 50% { opacity: 0.4; } 100% { opacity: 1; } }
    .score-big { font-size: 3rem; font-weight: 800; color: var(--accent); }

    .wave-divider { position: absolute; bottom: -2px; left: 0; width: 100%; overflow: hidden; line-height: 0; }
    .wave-divider svg { fill: #F9FAFB; }

    @media (max-width: 768px) {
      h1 { font-size: 2.2rem; }
      h2 { font-size: 1.8rem; }
      .hero-content { flex-direction: column; text-align: center; }
      .hero-visual { margin-top: 2rem; }
      .section-padding { padding: 3rem 0; }
    }

    /* 数据徽章 */
    .badge-data {
      display: inline-block; background: rgba(245,166,35,0.1);
      color: var(--accent); padding: 0.25rem 0.8rem; border-radius: 20px;
      font-weight: 700; font-size: 0.9rem; margin-top: 0.8rem;
    }

    /* 实时数据深色区 */
    .dark-section { background: var(--dark-bg); color: white; }
    .score-card {
      background: rgba(255,255,255,0.08); border-radius: var(--radius);
      padding: 1.5rem; text-align: center;
    }
    .team-name { color: #ccc; font-size: 0.9rem; }

    /* 方案卡片色条 */
    .plan-strip { height: 6px; border-radius: 16px 16px 0 0; margin: -2rem -2rem 1.5rem -2rem; }
    .plan-recommend {
      position: absolute; top: 1rem; right: 1rem; background: var(--accent);
      color: white; padding: 0.2rem 1rem; border-radius: 20px; font-size: 0.8rem;
    }

    /* 案例卡片左边框 */
    .case-card { border-left: 4px solid var(--primary); background: white; border-radius: 0 var(--radius) var(--radius) 0; }

    /* FAQ */
    .accordion-title {
      font-weight: 600; cursor: pointer; padding: 1rem; background: white;
      border-radius: 8px; margin-bottom: 0.5rem; transition: 0.2s;
    }
    .accordion-title:hover { background: rgba(11,94,59,0.03); }
    .accordion-content { padding: 0 1rem 1rem; color: var(--text-light); }

    /* 表单 */
    .contact-form input {
      border-radius: var(--radius-sm); border: 1px solid #ddd; padding: 0.8rem;
      width: 100%; margin-bottom: 1rem;
    }
    .contact-form input:focus { border-color: var(--accent); outline: none; }

    /* 页脚 */
    .site-footer { background: var(--dark-bg); color: #9CA3AF; padding: 3rem 0 1.5rem; }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; }
    .footer-bottom { text-align: center; margin-top: 2rem; font-size: 0.85rem; border-top: 1px solid #2d2d44; padding-top: 1.5rem; }

    @media (max-width: 768px) {
      .footer-grid { grid-template-columns: 1fr; }
    }