/* roulang page: index */
:root {
      --primary: #1A1A2E;
      --accent: #E94560;
      --deep-blue: #0F3460;
      --gold: #F5C518;
      --bg-light: #F8F9FA;
      --bg-dark: #16213E;
      --text-primary: #1A1A2E;
      --text-body: #4A4A5A;
      --text-muted: #6C6C80;
      --white: #ffffff;
      --shadow-sm: 0 2px 12px rgba(0,0,0,0.04);
      --shadow-md: 0 4px 20px rgba(0,0,0,0.06);
      --shadow-lg: 0 8px 30px rgba(0,0,0,0.08);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 16px;
      --radius-xl: 24px;
      --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
      --font-number: "Inter", "SF Pro Display", system-ui;
      --transition: 0.3s ease;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-light);
      color: var(--text-body);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* 导航 */
    .header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(10px);
      box-shadow: 0 1px 0 rgba(0,0,0,0.05);
      z-index: 100;
      transition: var(--transition);
    }
    .nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-weight: 700;
      font-size: 22px;
      color: var(--primary);
      text-decoration: none;
      letter-spacing: -0.3px;
    }
    .logo-dot {
      width: 10px;
      height: 10px;
      background: var(--accent);
      border-radius: 50%;
      display: inline-block;
      margin-right: 2px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      list-style: none;
    }
    .nav-links a {
      text-decoration: none;
      color: var(--text-body);
      font-weight: 500;
      font-size: 15px;
      transition: color 0.2s;
    }
    .nav-links a:hover {
      color: var(--accent);
    }
    .btn-primary {
      background: linear-gradient(135deg, #E94560 0%, #F5C518 100%);
      border: none;
      color: white;
      padding: 10px 24px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 15px;
      cursor: pointer;
      transition: all 0.25s;
      text-decoration: none;
      display: inline-block;
      box-shadow: 0 4px 12px rgba(233,69,96,0.25);
    }
    .btn-primary:hover {
      box-shadow: 0 8px 22px rgba(233,69,96,0.4);
      transform: translateY(-1px);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--primary);
      color: var(--primary);
      padding: 10px 24px;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 15px;
      cursor: pointer;
      transition: 0.25s;
      text-decoration: none;
      display: inline-block;
    }
    .btn-outline:hover {
      background: var(--primary);
      color: white;
    }
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 4px;
    }
    .hamburger span {
      width: 24px;
      height: 2px;
      background: var(--primary);
      transition: var(--transition);
    }
    @media (max-width: 768px) {
      .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(22,33,62,0.96);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 100px 30px 30px;
        gap: 28px;
        transition: 0.4s ease;
        box-shadow: -5px 0 25px rgba(0,0,0,0.2);
      }
      .nav-links.active {
        right: 0;
      }
      .nav-links a {
        color: white;
        font-size: 18px;
      }
      .hamburger {
        display: flex;
        z-index: 110;
      }
      .nav .btn-primary {
        display: none;
      }
      .mobile-cta {
        display: block !important;
        margin-top: 20px;
      }
    }
    .mobile-cta {
      display: none;
    }

    /* Hero */
    .hero {
      background: linear-gradient(135deg, #1A1A2E 0%, #0F3460 60%, #E94560 100%);
      padding: 140px 0 100px;
      position: relative;
      overflow: hidden;
    }
    .hero .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 40px;
    }
    .hero-content {
      flex: 1;
      color: white;
    }
    .hero h1 {
      font-size: 42px;
      font-weight: 700;
      line-height: 1.2;
      color: white;
      letter-spacing: -0.5px;
      margin-bottom: 20px;
    }
    .hero-sub {
      font-size: 18px;
      opacity: 0.9;
      margin-bottom: 32px;
    }
    .hero-buttons {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .hero-visual {
      flex: 0 0 320px;
      display: flex;
      justify-content: center;
      align-items: center;
      position: relative;
    }
    .rhythm-ring {
      position: relative;
      width: 260px;
      height: 260px;
    }
    .ring {
      position: absolute;
      border-radius: 50%;
      border: 2px solid rgba(255,255,255,0.25);
      animation: spin 12s linear infinite;
    }
    .ring:nth-child(1) { width: 100%; height: 100%; top:0; left:0; border-color: #E94560; animation-duration: 18s; }
    .ring:nth-child(2) { width: 80%; height: 80%; top:10%; left:10%; border-color: #0F3460; animation-duration: 14s; animation-direction: reverse; }
    .ring:nth-child(3) { width: 60%; height: 60%; top:20%; left:20%; border-color: #F5C518; animation-duration: 10s; }
    .badge-365 {
      position: absolute;
      top: 50%; left: 50%;
      transform: translate(-50%, -50%);
      background: white;
      color: var(--accent);
      font-family: var(--font-number);
      font-weight: 800;
      font-size: 38px;
      padding: 12px 24px;
      border-radius: 60px;
      box-shadow: 0 10px 30px rgba(0,0,0,0.3);
      z-index: 5;
    }
    @keyframes spin {
      from { transform: rotate(0deg); }
      to { transform: rotate(360deg); }
    }
    @media (max-width: 768px) {
      .hero .container {
        flex-direction: column;
        text-align: center;
      }
      .hero-visual {
        flex: 0 0 auto;
        margin-top: 30px;
      }
      .rhythm-ring {
        width: 200px;
        height: 200px;
      }
      .hero h1 {
        font-size: 32px;
      }
    }

    /* 通用区块 */
    section {
      padding: 80px 0;
    }
    .section-title {
      text-align: center;
      margin-bottom: 50px;
    }
    .section-title h2 {
      font-size: 32px;
      font-weight: 700;
      color: var(--primary);
    }
    .section-title p {
      color: var(--text-muted);
      margin-top: 10px;
    }

    /* 服务卡片 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .service-card {
      background: white;
      border-radius: var(--radius-lg);
      padding: 32px 24px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      border: 1px solid transparent;
    }
    .service-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: #E94560;
    }
    .service-icon {
      width: 48px;
      height: 48px;
      margin-bottom: 20px;
    }
    .service-card h3 {
      font-size: 22px;
      font-weight: 600;
      color: var(--deep-blue);
      margin-bottom: 12px;
    }
    .badge-number {
      font-family: var(--font-number);
      font-weight: 800;
      color: #E94560;
      font-size: 28px;
      margin-top: 16px;
    }
    @media (max-width: 768px) {
      .services-grid {
        grid-template-columns: 1fr;
      }
    }

    /* 优势数据 */
    .stats-section {
      background: var(--bg-dark);
      color: white;
    }
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      text-align: center;
      gap: 30px;
    }
    .stat-item .stat-number {
      font-family: var(--font-number);
      font-size: 48px;
      font-weight: 800;
      color: var(--gold);
    }
    .stat-label {
      font-size: 15px;
      opacity: 0.8;
    }
    @media (max-width: 768px) {
      .stats-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    /* 案例 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
    }
    .case-card {
      background: white;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: 0.3s;
    }
    .case-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-lg);
    }
    .case-img {
      height: 200px;
      background-size: cover;
      background-position: center;
    }
    .case-content {
      padding: 24px;
    }
    .case-tag {
      background: #ffe6ea;
      color: #E94560;
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 13px;
      font-weight: 600;
    }
    @media (max-width: 768px) {
      .cases-grid {
        grid-template-columns: 1fr;
      }
    }

    /* FAQ */
    .faq-list {
      max-width: 800px;
      margin: 0 auto;
    }
    .faq-item {
      border-bottom: 1px solid #e0e0e0;
      padding: 20px 0;
    }
    .faq-question {
      font-weight: 600;
      font-size: 18px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: var(--primary);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: 0.3s;
      color: var(--text-body);
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      margin-top: 12px;
    }
    .faq-icon {
      font-size: 24px;
      color: #E94560;
    }

    /* CTA */
    .cta-block {
      background: linear-gradient(135deg, #1A1A2E, #0F3460);
      color: white;
      text-align: center;
      padding: 80px 0;
    }

    /* 联系表单 */
    .contact-row {
      display: flex;
      gap: 50px;
      align-items: flex-start;
    }
    .contact-info {
      flex: 1;
    }
    .contact-form {
      flex: 1;
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .contact-form input, .contact-form textarea {
      padding: 14px;
      border-radius: var(--radius-sm);
      border: 1px solid #ddd;
      font-family: inherit;
      transition: 0.2s;
    }
    .contact-form input:focus, .contact-form textarea:focus {
      border-color: #E94560;
      outline: none;
    }
    @media (max-width: 768px) {
      .contact-row {
        flex-direction: column;
      }
    }

    /* Footer */
    .footer {
      background: #16213E;
      color: #ccc;
      padding: 60px 0 20px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 40px;
    }
    .footer a {
      color: #aaa;
      text-decoration: none;
    }
    .copyright {
      text-align: center;
      border-top: 1px solid #2a3a5a;
      padding-top: 20px;
      font-size: 14px;
    }
    @media (max-width: 768px) {
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }