/* roulang page: index */
:root {
      --brand-red: #E63946;
      --brand-dark: #1D3557;
      --brand-bg: #F1FAEE;
      --brand-accent: #F4A261;
      --gradient-brand: linear-gradient(135deg, #E63946 0%, #F4A261 100%);
      --text-strong: #1D3557;
      --text-body: #4a5568;
      --text-muted: #6c757d;
      --border-light: #e9ecef;
      --shadow-sm: 0 4px 20px rgba(0,0,0,0.06);
      --shadow-hover: 0 12px 32px rgba(0,0,0,0.12);
      --radius-card: 20px;
      --radius-btn: 50px;
      --radius-input: 12px;
      --font-title: 'Noto Sans SC', -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
      --font-body: -apple-system, "PingFang SC", "Microsoft YaHei", "Inter", sans-serif;
      --transition-smooth: all 0.3s ease;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-body);
      background-color: var(--brand-bg);
      color: var(--text-body);
      line-height: 1.7;
      margin: 0;
      overflow-x: hidden;
    }
    h1, h2, h3, h4, .font-title {
      font-family: var(--font-title);
      font-weight: 700;
      color: var(--text-strong);
      letter-spacing: -0.02em;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition-smooth);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    /* 导航头部 */
    .navbar-brand-custom {
      font-family: var(--font-title);
      font-size: 1.8rem;
      font-weight: 900;
      color: var(--brand-red) !important;
      letter-spacing: -1px;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .navbar-brand-custom i {
      font-size: 2rem;
      color: var(--brand-red);
    }
    .header-row-1 {
      height: 70px;
      background-color: #fff;
      border-bottom: 1px solid rgba(0,0,0,0.04);
      display: flex;
      align-items: center;
      padding: 0 1.5rem;
    }
    .search-icon {
      font-size: 1.2rem;
      color: var(--text-muted);
      margin-right: 1.2rem;
      cursor: pointer;
      transition: var(--transition-smooth);
    }
    .search-icon:hover {
      color: var(--brand-red);
    }
    .btn-cta-sm {
      background: var(--gradient-brand);
      border: none;
      border-radius: 50px;
      padding: 0.5rem 1.4rem;
      font-weight: 600;
      color: white;
      font-size: 0.9rem;
      letter-spacing: 0.3px;
      transition: var(--transition-smooth);
      box-shadow: 0 4px 12px rgba(230,57,70,0.3);
    }
    .btn-cta-sm:hover {
      filter: brightness(1.1);
      box-shadow: 0 6px 18px rgba(230,57,70,0.4);
      color: white;
    }
    .channel-tabs {
      background-color: #ffffff;
      border-bottom: 1px solid var(--border-light);
      padding: 0 1.5rem;
      overflow-x: auto;
      white-space: nowrap;
      display: flex;
      align-items: center;
      height: 52px;
      -webkit-overflow-scrolling: touch;
    }
    .channel-tabs::-webkit-scrollbar {
      display: none;
    }
    .pill-nav {
      display: inline-flex;
      gap: 8px;
      align-items: center;
      height: 100%;
    }
    .pill-link {
      background: transparent;
      border-radius: 50px;
      padding: 0.45rem 1.3rem;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-muted);
      transition: var(--transition-smooth);
      display: inline-block;
      border: 1px solid transparent;
    }
    .pill-link:hover, .pill-link.active {
      background: var(--brand-red);
      color: white;
      border-color: var(--brand-red);
      font-weight: 600;
    }
    /* Hero */
    #hero {
      min-height: 90vh;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      position: relative;
      display: flex;
      align-items: center;
      color: white;
    }
    .hero-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(29,53,87,0.8) 0%, rgba(230,57,70,0.7) 100%);
      z-index: 1;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      width: 100%;
    }
    .hero-title {
      font-size: 4rem;
      font-weight: 900;
      line-height: 1.2;
      color: white;
      text-shadow: 0 8px 24px rgba(0,0,0,0.3);
    }
    .hero-sub {
      font-size: 1.25rem;
      opacity: 0.9;
      max-width: 700px;
      margin: 1.5rem 0 2rem;
    }
    .btn-hero {
      background: white;
      color: var(--brand-red);
      border-radius: 50px;
      padding: 0.9rem 2.8rem;
      font-weight: 700;
      font-size: 1.1rem;
      box-shadow: 0 12px 28px rgba(0,0,0,0.2);
      transition: var(--transition-smooth);
      border: none;
    }
    .btn-hero:hover {
      background: var(--brand-accent);
      color: #1D3557;
      transform: translateY(-2px);
      box-shadow: 0 18px 36px rgba(0,0,0,0.25);
    }
    .hero-image-col {
      position: relative;
      z-index: 2;
    }
    .hero-image-col img {
      border-radius: 28px;
      box-shadow: 0 24px 48px rgba(0,0,0,0.35);
      max-height: 450px;
      object-fit: cover;
    }
    /* 板块通用 */
    .section-padding {
      padding: 100px 0;
    }
    .section-title {
      font-size: 2.5rem;
      font-weight: 800;
      margin-bottom: 1rem;
      color: var(--brand-dark);
    }
    .section-sub {
      color: var(--text-muted);
      font-size: 1.1rem;
      max-width: 600px;
      margin: 0 auto 3rem;
    }
    .card-custom {
      background: white;
      border-radius: var(--radius-card);
      padding: 2rem 1.5rem;
      border: none;
      box-shadow: var(--shadow-sm);
      transition: var(--transition-smooth);
      height: 100%;
      position: relative;
    }
    .card-custom:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .icon-circle {
      width: 56px;
      height: 56px;
      background: rgba(230,57,70,0.1);
      border-radius: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--brand-red);
      font-size: 1.8rem;
      margin-bottom: 1.5rem;
    }
    .badge-accent {
      background: var(--brand-accent);
      color: white;
      font-weight: 700;
      font-size: 0.8rem;
      border-radius: 30px;
      padding: 0.25rem 0.9rem;
      letter-spacing: 0.3px;
    }
    .stat-number {
      font-size: 2.8rem;
      font-weight: 800;
      color: var(--brand-dark);
      line-height: 1.1;
    }
    /* 证言卡片 */
    .testimonial-card {
      background: white;
      border-radius: 24px;
      padding: 2rem;
      border-left: 6px solid var(--brand-red);
      box-shadow: var(--shadow-sm);
    }
    .avatar {
      width: 60px;
      height: 60px;
      border-radius: 50%;
      object-fit: cover;
      background: #eee;
    }
    /* FAQ */
    .accordion-button:not(.collapsed) {
      background-color: rgba(230,57,70,0.05);
      color: var(--brand-dark);
      font-weight: 700;
      box-shadow: none;
    }
    .accordion-button:focus {
      border-color: var(--brand-red);
      box-shadow: 0 0 0 0.2rem rgba(230,57,70,0.15);
    }
    .accordion-item {
      border: none;
      margin-bottom: 1rem;
      border-radius: 18px !important;
      overflow: hidden;
      background: white;
    }
    /* 表单 */
    .form-control {
      border-radius: var(--radius-input);
      border: 1px solid #dee2e6;
      padding: 0.8rem 1.2rem;
    }
    .form-control:focus {
      border-color: var(--brand-red);
      box-shadow: 0 0 0 0.2rem rgba(230,57,70,0.2);
    }
    .btn-submit {
      background: var(--gradient-brand);
      border: none;
      border-radius: 50px;
      padding: 0.8rem 2rem;
      font-weight: 700;
      color: white;
      width: 100%;
      transition: var(--transition-smooth);
    }
    .btn-submit:hover {
      filter: brightness(1.1);
    }
    footer {
      background: var(--brand-dark);
      color: rgba(255,255,255,0.8);
    }
    footer a:hover {
      color: var(--brand-accent);
    }
    @media (max-width: 992px) {
      .hero-title { font-size: 3rem; }
    }
    @media (max-width: 768px) {
      .hero-title { font-size: 2.4rem; }
      .section-title { font-size: 2rem; }
      .section-padding { padding: 70px 0; }
      .hero-image-col { margin-top: 2rem; }
      .channel-tabs { padding: 0 1rem; }
    }