/* roulang page: index */
:root {
      --sunset-gold: #F0851D;
      --deep-charcoal: #2D2D2D;
      --warm-white: #FFFBF5;
      --amber-hover: #F5A623;
      --sunset-dark: #D97016;
      --soft-gray: #CCCCCC;
      --border-light: #EEEEEE;
      --shadow-sm: 0 4px 20px rgba(45, 45, 45, 0.08);
      --shadow-hover: 0 8px 30px rgba(240, 133, 29, 0.15);
      --radius-card: 16px;
      --radius-btn: 50px;
      --font-system: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
      --spacing-desktop: 120px;
      --spacing-mobile: 80px;
      --bottom-nav-height: 64px;
    }

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

    body {
      font-family: var(--font-system);
      background-color: var(--warm-white);
      color: var(--deep-charcoal);
      line-height: 1.5;
      font-weight: 400;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      padding-bottom: var(--bottom-nav-height); /* 移动端底部导航占位 */
    }

    h1, h2, h3, h4, h5 {
      font-weight: 700;
      letter-spacing: -0.02em;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s ease, background-color 0.2s ease;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    .container-custom {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 按钮系统 */
    .btn-primary-sun {
      background-color: var(--sunset-gold);
      color: white;
      border: none;
      border-radius: var(--radius-btn);
      padding: 12px 32px;
      font-weight: 600;
      transition: all 0.25s ease;
      box-shadow: 0 4px 12px rgba(240, 133, 29, 0.3);
      display: inline-block;
      text-align: center;
    }
    .btn-primary-sun:hover, .btn-primary-sun:focus {
      background-color: var(--sunset-dark);
      box-shadow: 0 0 20px rgba(240, 133, 29, 0.5);
      color: white;
      transform: translateY(-1px);
    }

    .btn-outline-sun {
      background: transparent;
      border: 2px solid var(--sunset-gold);
      color: var(--sunset-gold);
      border-radius: var(--radius-btn);
      padding: 12px 32px;
      font-weight: 600;
      transition: all 0.25s ease;
      display: inline-block;
      text-align: center;
    }
    .btn-outline-sun:hover, .btn-outline-sun:focus {
      background-color: var(--sunset-gold);
      color: white;
      border-color: var(--sunset-gold);
    }

    .btn-white-outline {
      background: transparent;
      border: 2px solid white;
      color: white;
      border-radius: var(--radius-btn);
      padding: 14px 36px;
      font-weight: 600;
      transition: all 0.25s ease;
      display: inline-block;
      text-align: center;
    }
    .btn-white-outline:hover {
      background-color: white;
      color: var(--sunset-gold);
    }

    /* 导航栏 (桌面端) */
    .navbar-sun {
      background-color: white;
      padding: 12px 0;
      transition: box-shadow 0.3s ease;
      position: sticky;
      top: 0;
      z-index: 1020;
    }
    .navbar-sun.scrolled {
      box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    }
    .logo-text {
      font-size: 24px;
      font-weight: 700;
      color: var(--sunset-gold);
      display: flex;
      align-items: center;
      gap: 8px;
      text-decoration: none;
    }
    .logo-sun-icon {
      width: 28px;
      height: 28px;
      background: var(--sunset-gold);
      border-radius: 50%;
      position: relative;
      display: inline-block;
      box-shadow: 0 0 8px rgba(240,133,29,0.6);
    }
    .logo-sun-icon::after {
      content: "";
      position: absolute;
      top: -3px; left: -3px; right: -3px; bottom: -3px;
      border-radius: 50%;
      background: conic-gradient(var(--sunset-gold) 0deg, transparent 40deg, var(--sunset-gold) 80deg, transparent 120deg, var(--sunset-gold) 160deg, transparent 200deg, var(--sunset-gold) 240deg, transparent 280deg, var(--sunset-gold) 320deg);
      opacity: 0.5;
      z-index: -1;
    }
    .nav-link-sun {
      color: var(--deep-charcoal) !important;
      font-weight: 500;
      margin: 0 12px;
      position: relative;
      padding: 4px 0;
      transition: color 0.2s;
    }
    .nav-link-sun:hover, .nav-link-sun.active {
      color: var(--sunset-gold) !important;
    }
    .nav-link-sun::after {
      content: "";
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0%;
      height: 2px;
      background: var(--sunset-gold);
      transition: width 0.2s ease;
    }
    .nav-link-sun:hover::after, .nav-link-sun.active::after {
      width: 100%;
    }

    /* 移动端底部导航 */
    .mobile-bottom-nav {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      height: var(--bottom-nav-height);
      background: white;
      border-top: 1px solid var(--border-light);
      display: flex;
      justify-content: space-around;
      align-items: center;
      z-index: 1030;
      padding: 4px 8px;
      backdrop-filter: blur(10px);
    }
    .mobile-nav-item {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      color: #999999;
      font-size: 10px;
      min-width: 48px;
      min-height: 48px;
      transition: color 0.2s;
      text-decoration: none;
    }
    .mobile-nav-item i {
      font-size: 22px;
      margin-bottom: 2px;
    }
    .mobile-nav-item.active {
      color: var(--sunset-gold);
    }

    /* Hero 区块 */
    .hero-section {
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      position: relative;
      min-height: 85vh;
      display: flex;
      align-items: center;
      color: white;
    }
    .hero-overlay {
      position: absolute;
      top: 0; left: 0; width: 100%; height: 100%;
      background: linear-gradient(135deg, rgba(240,133,29,0.85) 0%, rgba(245,166,35,0.4) 100%);
    }
    .hero-content {
      position: relative;
      z-index: 2;
    }

    /* 通用区块间距 */
    .section-padding {
      padding-top: var(--spacing-desktop);
      padding-bottom: var(--spacing-desktop);
    }
    @media (max-width: 768px) {
      .section-padding {
        padding-top: var(--spacing-mobile);
        padding-bottom: var(--spacing-mobile);
      }
    }

    /* 卡片系统 */
    .card-sun {
      background: white;
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-sm);
      padding: 32px;
      transition: all 0.3s ease;
      height: 100%;
      border: 1px solid rgba(0,0,0,0.03);
    }
    .card-sun:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    @media (max-width: 768px) {
      .card-sun {
        padding: 24px;
      }
      .card-sun:hover {
        transform: none;
        box-shadow: var(--shadow-sm);
      }
      .card-sun:active {
        transform: scale(0.98);
      }
    }
    .icon-circle {
      width: 64px;
      height: 64px;
      background: var(--sunset-gold);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 20px;
      font-size: 28px;
      color: white;
    }

    .scenario-img {
      width: 100%;
      aspect-ratio: 16 / 9;
      object-fit: cover;
      border-radius: var(--radius-card) var(--radius-card) 0 0;
    }

    .pricing-card {
      position: relative;
    }
    .badge-recommend {
      position: absolute;
      top: 16px;
      right: 16px;
      background: var(--sunset-gold);
      color: white;
      border-radius: 20px;
      padding: 4px 14px;
      font-size: 12px;
      font-weight: 600;
    }
    .highlight-border {
      border: 2px solid var(--sunset-gold);
    }

    .accordion-sun .accordion-button {
      background: var(--warm-white);
      color: var(--deep-charcoal);
      font-weight: 600;
      border: 1px solid var(--border-light);
      border-radius: 8px !important;
      box-shadow: none;
    }
    .accordion-sun .accordion-button:not(.collapsed) {
      background: white;
      color: var(--sunset-gold);
      border-color: var(--sunset-gold);
    }
    .accordion-sun .accordion-item {
      border: none;
      margin-bottom: 12px;
      background: transparent;
    }

    .cta-fullwidth {
      background: var(--sunset-gold);
      padding: 80px 0;
    }

    .footer-dark {
      background: var(--deep-charcoal);
      color: var(--soft-gray);
      padding: 60px 0 30px;
    }
    .footer-dark a {
      color: var(--soft-gray);
      transition: color 0.2s;
    }
    .footer-dark a:hover {
      color: var(--sunset-gold);
    }
    .footer-brand {
      color: white;
      font-weight: 700;
    }

    @media (min-width: 992px) {
      .mobile-bottom-nav {
        display: none;
      }
      body {
        padding-bottom: 0;
      }
    }
    @media (max-width: 991.98px) {
      .desktop-only {
        display: none !important;
      }
    }
    @media (min-width: 992px) {
      .mobile-only {
        display: none !important;
      }
    }