/* roulang page: index */
:root {
      --primary: #181E29;
      --primary-dark: #111622;
      --accent: #0A66C2;
      --gold: #B89358;
      --gold-light: #DFBA73;
      --bg-light: #F8F9FA;
      --bg-white: #FFFFFF;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --border-dark: #273142;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
      --shadow-md: 0 8px 24px -4px rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 16px 36px -8px rgba(15, 23, 42, 0.12);
      --container-max: 1200px;
      --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

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

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      color: var(--text-body);
      background-color: var(--bg-white);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }

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

    ul, ol {
      list-style: none;
    }

    button, input, select, textarea {
      font-family: inherit;
      outline: none;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

    /* Top Bar */
    .top-bar {
      background: var(--primary-dark);
      color: #94A3B8;
      font-size: 0.8125rem;
      border-bottom: 1px solid var(--border-dark);
      padding: 8px 0;
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }
    .top-info {
      display: flex;
      align-items: center;
      gap: 20px;
    }
    .top-info span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* Main Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 700;
      font-size: 1.25rem;
      color: var(--primary);
    }
    .brand-logo-mark {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--accent) 0%, var(--gold) 100%);
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.1rem;
      font-weight: 800;
      box-shadow: 0 4px 12px rgba(10, 102, 194, 0.3);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-links a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-main);
      padding: 6px 0;
      position: relative;
    }
    .nav-links a::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0%;
      height: 2px;
      background: var(--accent);
      transition: var(--transition);
    }
    .nav-links a:hover::after,
    .nav-links a.active::after {
      width: 100%;
    }
    .nav-links a:hover {
      color: var(--accent);
    }
    .nav-action {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .btn-nav-demo {
      display: inline-block;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      font-weight: 600;
      background: var(--primary);
      color: #ffffff;
      border: 1px solid var(--primary);
      box-shadow: 0 4px 14px rgba(24, 30, 41, 0.15);
    }
    .btn-nav-demo:hover {
      background: var(--accent);
      border-color: var(--accent);
      transform: translateY(-2px);
    }
    .mobile-menu-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
      padding: 6px;
    }

    /* Common Sections */
    .section-wrap {
      padding: 96px 0;
      position: relative;
    }
    .section-wrap.alt-bg {
      background-color: var(--bg-light);
    }
    .section-wrap.dark-bg {
      background-color: var(--primary-dark);
      color: #F8FAFC;
    }
    .section-head {
      margin-bottom: 56px;
    }
    .section-head.text-center {
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }
    .badge-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 12px;
      border-radius: 999px;
      font-size: 0.8125rem;
      font-weight: 600;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      background: rgba(10, 102, 194, 0.08);
      color: var(--accent);
      margin-bottom: 14px;
      border: 1px solid rgba(10, 102, 194, 0.15);
    }
    .section-wrap.dark-bg .badge-tag {
      background: rgba(184, 147, 88, 0.15);
      color: var(--gold-light);
      border-color: rgba(184, 147, 88, 0.3);
    }
    .section-title {
      font-size: 2.25rem;
      line-height: 1.3;
      color: var(--text-main);
      font-weight: 700;
      margin-bottom: 16px;
      letter-spacing: -0.02em;
    }
    .section-wrap.dark-bg .section-title {
      color: #ffffff;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
    }
    .section-wrap.dark-bg .section-desc {
      color: #94A3B8;
    }

    /* 1. Hero (#hero) */
    .hero-section {
      background: linear-gradient(135deg, #111622 0%, #1A2232 50%, #151B27 100%);
      color: #fff;
      padding: 80px 0 100px;
      position: relative;
      overflow: hidden;
      border-bottom: 1px solid var(--border-dark);
    }
    .hero-section::before {
      content: "";
      position: absolute;
      top: -150px;
      right: -100px;
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(10, 102, 194, 0.22) 0%, rgba(184, 147, 88, 0.08) 50%, transparent 70%);
      pointer-events: none;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
      position: relative;
      z-index: 2;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 16px;
      border-radius: 999px;
      font-size: 0.85rem;
      background: rgba(184, 147, 88, 0.16);
      border: 1px solid rgba(184, 147, 88, 0.35);
      color: var(--gold-light);
      margin-bottom: 20px;
    }
    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--gold-light);
      box-shadow: 0 0 10px var(--gold);
    }
    .hero-h1 {
      font-size: 2.85rem;
      line-height: 1.25;
      font-weight: 800;
      color: #ffffff;
      margin-bottom: 22px;
      letter-spacing: -0.025em;
    }
    .hero-h1 span {
      background: linear-gradient(90deg, #FFFFFF 0%, #E2E8F0 60%, var(--gold-light) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 1.05rem;
      line-height: 1.85;
      color: #CBD5E1;
      margin-bottom: 36px;
    }
    .hero-actions {
      display: flex;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-gold {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 32px;
      background: linear-gradient(135deg, var(--gold) 0%, #A57E42 100%);
      color: #ffffff;
      font-weight: 600;
      font-size: 1rem;
      border-radius: var(--radius-sm);
      border: none;
      box-shadow: 0 6px 20px rgba(184, 147, 88, 0.35);
      cursor: pointer;
    }
    .btn-gold:hover {
      background: linear-gradient(135deg, #C7A263 0%, var(--gold) 100%);
      transform: translateY(-2px);
      box-shadow: 0 8px 26px rgba(184, 147, 88, 0.45);
    }
    .btn-outline-light {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 14px 28px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.2);
      color: #F8FAFC;
      font-weight: 500;
      font-size: 1rem;
      border-radius: var(--radius-sm);
    }
    .btn-outline-light:hover {
      background: rgba(255, 255, 255, 0.12);
      border-color: #ffffff;
      transform: translateY(-2px);
    }
    
    /* Faux Ranking Panel (Right Hero) */
    .faux-board {
      background: rgba(24, 30, 41, 0.85);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-lg);
      padding: 28px;
      backdrop-filter: blur(16px);
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
    }
    .faux-board-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 16px;
      margin-bottom: 20px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .board-title {
      font-size: 1.05rem;
      font-weight: 700;
      color: #ffffff;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .board-tag {
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: 4px;
      background: rgba(10, 102, 194, 0.2);
      color: #60A5FA;
      border: 1px solid rgba(10, 102, 194, 0.4);
    }
    .faux-board-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faux-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: rgba(255, 255, 255, 0.03);
      padding: 12px 16px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.05);
      transition: var(--transition);
    }
    .faux-item:hover {
      background: rgba(255, 255, 255, 0.06);
      border-color: rgba(184, 147, 88, 0.3);
      transform: translateX(4px);
    }
    .faux-item-left {
      display: flex;
      align-items: center;
      gap: 14px;
    }
    .faux-rank {
      width: 24px;
      height: 24px;
      border-radius: 6px;
      background: rgba(255, 255, 255, 0.1);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.8rem;
      font-weight: 700;
      color: #94A3B8;
    }
    .faux-item:nth-child(1) .faux-rank {
      background: var(--gold);
      color: #fff;
    }
    .faux-item:nth-child(2) .faux-rank {
      background: #718096;
      color: #fff;
    }
    .faux-item:nth-child(3) .faux-rank {
      background: #805b36;
      color: #fff;
    }
    .faux-info h4 {
      font-size: 0.925rem;
      font-weight: 600;
      color: #F8FAFC;
    }
    .faux-info p {
      font-size: 0.775rem;
      color: #94A3B8;
    }
    .faux-stat {
      text-align: right;
    }
    .faux-val {
      font-size: 1rem;
      font-weight: 700;
      color: var(--gold-light);
    }
    .faux-label {
      font-size: 0.725rem;
      color: #64748B;
    }

    /* 2. 倒计时与权益焕新通栏 (#countdown) */
    .countdown-bar {
      background: #151B26;
      border-bottom: 1px solid var(--border-dark);
      padding: 24px 0;
      color: #F8FAFC;
    }
    .countdown-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 20px;
    }
    .countdown-title-wrap {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .flash-badge {
      background: #E11D48;
      color: #fff;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: 4px;
      letter-spacing: 0.5px;
    }
    .countdown-text {
      font-size: 1.05rem;
      font-weight: 600;
    }
    .countdown-sub {
      font-size: 0.85rem;
      color: #94A3B8;
    }
    .timer-boxes {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .t-box {
      background: #1E293B;
      padding: 8px 14px;
      border-radius: 6px;
      text-align: center;
      min-width: 54px;
      border: 1px solid rgba(255, 255, 255, 0.08);
    }
    .t-val {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--gold-light);
      display: block;
      line-height: 1.1;
    }
    .t-unit {
      font-size: 0.7rem;
      color: #64748B;
    }
    .btn-apply-fast {
      padding: 10px 24px;
      background: var(--accent);
      color: #ffffff;
      font-size: 0.9rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
    }
    .btn-apply-fast:hover {
      background: #095196;
    }

    /* 3. 数字会员运营痛点解析 (#challenges) */
    .cards-3grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .challenge-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 36px 30px;
      transition: var(--transition);
      position: relative;
      box-shadow: var(--shadow-sm);
    }
    .challenge-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #CBD5E1;
    }
    .card-top-alert {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.8125rem;
      font-weight: 700;
      color: #DC2626;
      background: #FEF2F2;
      padding: 4px 10px;
      border-radius: 4px;
      margin-bottom: 20px;
    }
    .challenge-title {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .challenge-desc {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.75;
      margin-bottom: 20px;
    }
    .solution-contrast {
      background: #F1F5F9;
      border-left: 3px solid var(--accent);
      padding: 12px 16px;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      font-size: 0.875rem;
      color: var(--primary);
    }
    .solution-contrast strong {
      display: block;
      color: var(--accent);
      margin-bottom: 4px;
    }

    /* 4. 一体化解决方案与系统全景 (#solution) */
    .solution-layout {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .solution-tabs {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }
    .solution-item {
      padding: 24px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      transition: var(--transition);
    }
    .solution-item:hover,
    .solution-item.active-item {
      border-color: var(--accent);
      box-shadow: var(--shadow-md);
      background: #FAFBFD;
    }
    .solution-item-head {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 10px;
    }
    .solution-num {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: rgba(10, 102, 194, 0.1);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.875rem;
      font-weight: 700;
    }
    .solution-item-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .solution-item-desc {
      font-size: 0.925rem;
      color: var(--text-body);
      line-height: 1.7;
    }
    .solution-media-box {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-lg);
      position: relative;
    }
    .solution-media-box img {
      width: 100%;
      height: 480px;
      object-fit: cover;
    }
    .solution-overlay-card {
      position: absolute;
      bottom: 24px;
      left: 24px;
      right: 24px;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(8px);
      padding: 20px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
    }
    .solution-overlay-card h5 {
      font-size: 0.975rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 6px;
    }
    .solution-overlay-card p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 5. 核心定位与技术背书 (#about) */
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .about-img-wrap {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-lg);
    }
    .about-img-wrap img {
      width: 100%;
      height: 440px;
      object-fit: cover;
    }
    .about-text-content h3 {
      font-size: 1.85rem;
      line-height: 1.35;
      color: var(--text-main);
      font-weight: 700;
      margin-bottom: 20px;
    }
    .about-p {
      font-size: 1rem;
      line-height: 1.8;
      color: var(--text-body);
      margin-bottom: 24px;
    }
    .security-cert-box {
      background: #F1F5F9;
      border: 1px solid #CBD5E1;
      padding: 20px;
      border-radius: var(--radius-md);
      margin-bottom: 28px;
    }
    .security-cert-head {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 8px;
      font-weight: 700;
      color: var(--primary);
      font-size: 1rem;
    }
    .security-cert-desc {
      font-size: 0.875rem;
      color: #475569;
      line-height: 1.65;
    }
    .about-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .about-tag-pill {
      font-size: 0.8125rem;
      padding: 6px 14px;
      border-radius: 999px;
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      color: var(--text-main);
      font-weight: 600;
    }

    /* 6. 核心优势六宫格 (#advantages) */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .advantage-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 26px;
      transition: var(--transition);
      position: relative;
    }
    .advantage-card:hover {
      border-color: var(--gold);
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
    }
    .adv-icon-badge {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: rgba(10, 102, 194, 0.08);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .advantage-card:hover .adv-icon-badge {
      background: rgba(184, 147, 88, 0.15);
      color: var(--gold);
    }
    .adv-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .adv-desc {
      font-size: 0.925rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 7. 旗舰产品矩阵 (#products) */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      align-items: stretch;
    }
    .product-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 40px 32px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
    }
    .product-card.featured-card {
      border: 2px solid var(--gold);
      transform: translateY(-8px);
      box-shadow: var(--shadow-lg);
      background: linear-gradient(180deg, #FFFFFF 0%, #FDFBF7 100%);
    }
    .featured-ribbon {
      position: absolute;
      top: -14px;
      left: 50%;
      transform: translateX(-50%);
      background: linear-gradient(135deg, var(--gold) 0%, #9B773F 100%);
      color: #FFFFFF;
      font-size: 0.775rem;
      font-weight: 700;
      padding: 4px 16px;
      border-radius: 999px;
      letter-spacing: 0.5px;
      box-shadow: 0 4px 10px rgba(184, 147, 88, 0.35);
    }
    .prod-category {
      font-size: 0.8125rem;
      font-weight: 700;
      color: var(--accent);
      text-transform: uppercase;
      letter-spacing: 0.5px;
      margin-bottom: 8px;
    }
    .prod-title {
      font-size: 1.4rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .prod-desc {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .prod-feature-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-bottom: 32px;
    }
    .prod-feature-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.8875rem;
      color: var(--text-body);
    }
    .prod-check {
      width: 18px;
      height: 18px;
      border-radius: 50%;
      background: #ECFDF5;
      color: #059669;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.75rem;
      font-weight: 800;
      flex-shrink: 0;
    }
    .btn-prod-action {
      display: inline-block;
      text-align: center;
      width: 100%;
      padding: 12px 0;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.95rem;
      border: 1px solid var(--border-color);
      color: var(--text-main);
      background: #FFFFFF;
      transition: var(--transition);
    }
    .product-card.featured-card .btn-prod-action {
      background: var(--primary);
      color: #FFFFFF;
      border-color: var(--primary);
    }
    .product-card.featured-card .btn-prod-action:hover {
      background: var(--accent);
      border-color: var(--accent);
    }
    .btn-prod-action:hover {
      border-color: var(--accent);
      color: var(--accent);
    }

    /* 8. 沉浸式理念与设计哲学 (#philosophy) */
    .philosophy-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 56px;
      align-items: center;
    }
    .philosophy-box {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-lg);
      padding: 40px;
      position: relative;
    }
    .philosophy-box::before {
      content: "";
      position: absolute;
      width: 180px;
      height: 180px;
      background: radial-gradient(circle, rgba(184, 147, 88, 0.25) 0%, transparent 70%);
      top: -40px;
      right: -40px;
      pointer-events: none;
    }
    .philo-quote {
      font-size: 1.4rem;
      line-height: 1.6;
      color: #FFFFFF;
      font-weight: 600;
      margin-bottom: 24px;
    }
    .philo-desc {
      font-size: 0.975rem;
      line-height: 1.85;
      color: #94A3B8;
      margin-bottom: 28px;
    }
    .philo-pillars {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }
    .philo-pill-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.06);
      padding: 16px;
      border-radius: var(--radius-sm);
    }
    .philo-pill-card h5 {
      color: var(--gold-light);
      font-size: 0.95rem;
      margin-bottom: 6px;
    }
    .philo-pill-card p {
      font-size: 0.8125rem;
      color: #64748B;
      line-height: 1.5;
    }
    .philosophy-media {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    }
    .philosophy-media img {
      width: 100%;
      height: 420px;
      object-fit: cover;
    }

    /* 9. 典型行业落地与用户故事 (#stories) */
    .stories-container {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 36px;
    }
    .story-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .story-cover-wrap {
      height: 240px;
      position: relative;
      overflow: hidden;
    }
    .story-cover-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .story-card:hover .story-cover-wrap img {
      transform: scale(1.04);
    }
    .story-industry-tag {
      position: absolute;
      top: 16px;
      left: 16px;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(4px);
      color: #FFFFFF;
      font-size: 0.775rem;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: 4px;
    }
    .story-content {
      padding: 32px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .story-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .story-quote {
      font-size: 0.925rem;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 24px;
      position: relative;
    }
    .story-kpi-row {
      display: flex;
      align-items: center;
      gap: 24px;
      padding-top: 18px;
      border-top: 1px solid var(--border-color);
    }
    .story-kpi-item h6 {
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--accent);
      line-height: 1.1;
    }
    .story-kpi-item p {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 10. 效益统计指标条 (#metrics) */
    .metrics-bar {
      background: #111622;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
      padding: 56px 0;
      color: #FFFFFF;
    }
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .metric-col {
      padding: 0 16px;
      position: relative;
    }
    .metric-col:not(:last-child)::after {
      content: "";
      position: absolute;
      right: 0;
      top: 20%;
      height: 60%;
      width: 1px;
      background: rgba(255, 255, 255, 0.1);
    }
    .metric-num {
      font-size: 2.75rem;
      font-weight: 800;
      color: var(--gold-light);
      line-height: 1.1;
      margin-bottom: 8px;
      letter-spacing: -0.02em;
    }
    .metric-label {
      font-size: 0.95rem;
      font-weight: 600;
      color: #F8FAFC;
      margin-bottom: 4px;
    }
    .metric-sub {
      font-size: 0.8125rem;
      color: #64748B;
    }

    /* 11. 客户口碑与证言 (#testimonials) */
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testi-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 32px 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .testi-stars {
      color: #F59E0B;
      font-size: 0.95rem;
      letter-spacing: 2px;
      margin-bottom: 16px;
    }
    .testi-text {
      font-size: 0.95rem;
      line-height: 1.8;
      color: var(--text-body);
      margin-bottom: 24px;
      flex: 1;
    }
    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }
    .author-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
      font-size: 1rem;
    }
    .author-info h5 {
      font-size: 0.925rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .author-info p {
      font-size: 0.775rem;
      color: var(--text-muted);
    }

    /* 12. 数字会员运营资讯内嵌摘要 (#insights) */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .insight-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }
    .insight-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #CBD5E1;
    }
    .insight-img-wrap {
      height: 160px;
      overflow: hidden;
    }
    .insight-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .insight-body {
      padding: 20px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .insight-date {
      font-size: 0.75rem;
      color: #94A3B8;
      margin-bottom: 8px;
    }
    .insight-title {
      font-size: 1rem;
      font-weight: 700;
      line-height: 1.45;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .insight-excerpt {
      font-size: 0.825rem;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 16px;
    }
    .insight-link {
      font-size: 0.825rem;
      font-weight: 600;
      color: var(--accent);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 13. FAQ 交互手风琴 (#faq) */
    .faq-container {
      max-width: 840px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
    }
    .faq-item.active {
      border-color: var(--accent);
      box-shadow: var(--shadow-sm);
    }
    .faq-question {
      width: 100%;
      text-align: left;
      background: none;
      border: none;
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
    }
    .faq-toggle-icon {
      font-size: 1.25rem;
      color: var(--accent);
      transition: transform 0.3s ease;
      line-height: 1;
    }
    .faq-item.active .faq-toggle-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #FAFBFD;
      color: var(--text-body);
      font-size: 0.925rem;
      line-height: 1.8;
      padding: 0 24px;
    }
    .faq-item.active .faq-answer {
      max-height: 200px;
      padding: 16px 24px 24px;
      border-top: 1px solid #EEF2F6;
    }

    /* 14. 转化表单与白皮书领取 (#contact) */
    .contact-wrap {
      background: linear-gradient(135deg, #111622 0%, #192131 100%);
      color: #FFFFFF;
      padding: 96px 0;
      border-top: 1px solid var(--border-dark);
    }
    .contact-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .contact-text-col h3 {
      font-size: 2.2rem;
      line-height: 1.3;
      font-weight: 800;
      margin-bottom: 20px;
      color: #FFFFFF;
    }
    .contact-text-col p {
      font-size: 1.05rem;
      line-height: 1.85;
      color: #94A3B8;
      margin-bottom: 32px;
    }
    .contact-perks-list {
      display: flex;
      flex-direction: column;
      gap: 14px;
    }
    .contact-perk {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.95rem;
      color: #E2E8F0;
    }
    .contact-form-box {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 40px;
      box-shadow: 0 24px 50px rgba(0, 0, 0, 0.45);
      color: var(--text-main);
    }
    .contact-form-box h4 {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .contact-form-box p {
      font-size: 0.875rem;
      color: var(--text-muted);
      margin-bottom: 24px;
    }
    .form-group {
      margin-bottom: 18px;
    }
    .form-label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 12px 14px;
      border-radius: var(--radius-sm);
      border: 1px solid var(--border-color);
      font-size: 0.925rem;
      color: var(--text-main);
      transition: var(--transition);
      background: #FAFBFD;
    }
    .form-control:focus {
      border-color: var(--accent);
      background: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(10, 102, 194, 0.12);
    }
    .btn-submit-form {
      width: 100%;
      padding: 14px;
      background: linear-gradient(135deg, var(--gold) 0%, #A3793B 100%);
      color: #FFFFFF;
      font-weight: 700;
      font-size: 1rem;
      border: none;
      border-radius: var(--radius-sm);
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(184, 147, 88, 0.3);
      transition: var(--transition);
    }
    .btn-submit-form:hover {
      background: linear-gradient(135deg, #C7A263 0%, var(--gold) 100%);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(184, 147, 88, 0.4);
    }

    /* Footer */
    .site-footer {
      background: #0B0E14;
      color: #94A3B8;
      padding: 72px 0 32px;
      font-size: 0.875rem;
      border-top: 1px solid #1E293B;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 48px;
    }
    .footer-brand h4 {
      font-size: 1.2rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 14px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .footer-brand p {
      line-height: 1.8;
      color: #64748B;
      margin-bottom: 20px;
    }
    .footer-col h5 {
      font-size: 0.95rem;
      font-weight: 700;
      color: #FFFFFF;
      margin-bottom: 18px;
      letter-spacing: 0.5px;
    }
    .footer-links-list {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links-list a {
      color: #94A3B8;
    }
    .footer-links-list a:hover {
      color: var(--gold-light);
    }
    .footer-contact-items {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-contact-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      color: #94A3B8;
      line-height: 1.6;
    }
    .footer-contact-item strong {
      color: #CBD5E1;
      font-weight: 600;
      flex-shrink: 0;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 28px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.8125rem;
      color: #64748B;
    }
    .footer-icp {
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .solution-layout,
      .about-grid,
      .philosophy-grid,
      .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .cards-3grid,
      .advantages-grid,
      .products-grid,
      .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .insights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 16px;
      }
      .metric-col:not(:last-child)::after {
        display: none;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 36px;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
        gap: 16px;
      }
      .nav-links.open {
        display: flex;
      }
      .hero-h1 {
        font-size: 2.15rem;
      }
      .cards-3grid,
      .advantages-grid,
      .products-grid,
      .testimonials-grid,
      .stories-container,
      .insights-grid {
        grid-template-columns: 1fr;
      }
      .section-wrap {
        padding: 64px 0;
      }
      .section-title {
        font-size: 1.8rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .countdown-inner {
        flex-direction: column;
        align-items: flex-start;
      }
    }