/* roulang page: index */
:root {
      --primary: #1d6ff2;
      --primary-hover: #1a5fd0;
      --primary-active: #154dab;
      --light-blue: #f0f6fe;
      --accent: #f0a500;
      --text-heading: #111827;
      --text-body: #4b5563;
      --text-muted: #9ca3af;
      --border: #e5e7eb;
      --border-blue: #e2edf9;
      --radius-card: 1rem;
      --radius-pill: 9999px;
      --shadow-card: 0 4px 16px rgba(15, 40, 90, 0.06);
      --shadow-hover: 0 12px 32px rgba(15, 40, 90, 0.12);
    }
    *,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background: #ffffff;
      color: var(--text-body);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    .container-site {
      max-width: 80rem;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1rem;
      padding-right: 1rem;
    }
    @media (min-width: 640px) {
      .container-site {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
      }
    }
    @media (min-width: 1024px) {
      .container-site {
        padding-left: 2rem;
        padding-right: 2rem;
      }
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    img {
      max-width: 100%;
      display: block;
    }
    button,
    input {
      font-family: inherit;
    }
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary);
      color: #fff;
      padding: 0.75rem 1.75rem;
      border-radius: var(--radius-pill);
      font-weight: 600;
      transition: background .2s, transform .2s, box-shadow .2s;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(29, 111, 242, 0.18);
    }
    .btn-primary:hover {
      background: var(--primary-hover);
      box-shadow: 0 8px 24px rgba(29, 111, 242, 0.24);
      transform: translateY(-1px);
    }
    .btn-primary:active {
      background: var(--primary-active);
      transform: translateY(0);
    }
    .btn-primary:focus,
    .btn-secondary:focus,
    .btn-amber:focus {
      outline: none;
      box-shadow: 0 0 0 3px rgba(29, 111, 242, 0.35);
    }
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: #fff;
      color: var(--primary);
      padding: 0.75rem 1.75rem;
      border-radius: var(--radius-pill);
      font-weight: 600;
      border: 1px solid var(--border-blue);
      transition: background .2s, border-color .2s, transform .2s;
      cursor: pointer;
    }
    .btn-secondary:hover {
      background: var(--light-blue);
      border-color: var(--primary);
      transform: translateY(-1px);
    }
    .btn-amber {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: #fbbf24;
      color: #1f2937;
      padding: 0.9rem 2rem;
      border-radius: var(--radius-pill);
      font-weight: 700;
      font-size: 1.05rem;
      transition: background .2s, transform .2s, box-shadow .2s;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 14px rgba(240, 165, 0, 0.25);
    }
    .btn-amber:hover {
      background: #f59e0b;
      box-shadow: 0 8px 24px rgba(240, 165, 0, 0.32);
      transform: translateY(-1px);
    }
    .card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      transition: box-shadow .25s, transform .25s;
    }
    .card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }
    .pill-tag {
      display: inline-block;
      padding: 0.25rem 0.9rem;
      border-radius: var(--radius-pill);
      font-size: 0.8rem;
      font-weight: 500;
      background: var(--light-blue);
      color: var(--primary);
      line-height: 1.5;
    }
    .logo-badge {
      width: 2.1rem;
      height: 2.1rem;
      border-radius: 0.65rem;
      background: linear-gradient(135deg, var(--primary) 0%, #4f8ff7 100%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 800;
      font-size: 1.1rem;
      flex-shrink: 0;
    }
    .faq-item {
      border: 1px solid var(--border);
      background: #fff;
      border-radius: 0.9rem;
      box-shadow: 0 1px 4px rgba(15, 40, 90, 0.04);
      transition: box-shadow .2s;
    }
    .faq-item.open {
      box-shadow: var(--shadow-card);
      border-color: var(--border-blue);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height .3s ease, opacity .3s ease, padding .3s ease;
      opacity: 0;
      padding: 0 1.25rem;
      color: var(--text-body);
      line-height: 1.8;
    }
    .faq-item.open .faq-answer {
      max-height: 300px;
      opacity: 1;
      padding: 0 1.25rem 1.25rem;
    }
    .faq-icon {
      transition: transform .3s;
      color: var(--text-muted);
      flex-shrink: 0;
    }
    .faq-item.open .faq-icon {
      transform: rotate(45deg);
      color: var(--primary);
    }
    .hero-section {
      background:
        linear-gradient(to right, rgba(255, 255, 255, 0.97), rgba(240, 246, 254, 0.88) 55%, rgba(240, 246, 254, 0.45)),
        url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
    }
    .stat-card {
      text-align: center;
      padding: 1.5rem 1rem;
    }
    .stat-number {
      font-size: 2rem;
      font-weight: 800;
      color: var(--text-heading);
      letter-spacing: -0.02em;
    }
    @media (min-width: 768px) {
      .stat-number {
        font-size: 2.4rem;
      }
    }
    .scene-image {
      border-radius: 1.2rem;
      box-shadow: 0 20px 40px rgba(15, 40, 90, 0.10);
      object-fit: cover;
      width: 100%;
      height: auto;
    }
    .testimonial-scroll {
      display: flex;
      gap: 1.5rem;
      overflow-x: auto;
      padding: 1rem 0.25rem 1.5rem;
      scrollbar-width: none;
      -ms-overflow-style: none;
    }
    .testimonial-scroll::-webkit-scrollbar {
      display: none;
    }
    .testimonial-card {
      flex: 0 0 340px;
    }
    @media (min-width: 768px) {
      .testimonial-card {
        flex-basis: 380px;
      }
    }
    .logo-wall {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 1.25rem 2.5rem;
      padding-top: 1rem;
    }
    .logo-wall span {
      color: #9ca3af;
      font-size: 0.95rem;
      font-weight: 500;
      letter-spacing: 0.05em;
      opacity: 0.7;
      transition: opacity .2s;
      white-space: nowrap;
    }
    .logo-wall span:hover {
      opacity: 1;
      color: var(--text-body);
    }
    .feature-row {
      display: flex;
      align-items: flex-start;
      gap: 1.25rem;
      padding: 1.6rem 1.2rem;
      border-bottom: 1px solid #f3f4f6;
      border-radius: 1rem;
      transition: background .25s, transform .25s;
    }
    .feature-row:hover {
      background: var(--light-blue);
      transform: translateX(4px);
    }
    .feature-row:hover .feature-number {
      color: var(--primary);
    }
    .feature-row:last-child {
      border-bottom: none;
    }
    .feature-number {
      font-size: 2.4rem;
      font-weight: 900;
      color: rgba(29, 111, 242, 0.20);
      line-height: 1.1;
      flex-shrink: 0;
      width: 3rem;
      transition: color .25s;
    }
    .feature-arrow {
      transition: transform .25s;
      color: var(--text-muted);
      flex-shrink: 0;
      margin-top: 0.35rem;
    }
    .feature-row:hover .feature-arrow {
      transform: translateX(4px);
      color: var(--primary);
    }
    .mobile-menu-panel {
      background: #fff;
      border-radius: 1.2rem;
      box-shadow: var(--shadow-hover);
      border: 1px solid var(--border-blue);
      padding: 1rem 0.5rem;
    }
    .nav-link-dock {
      display: inline-flex;
      align-items: center;
      padding: 0.45rem 1.1rem;
      border-radius: var(--radius-pill);
      font-size: 0.92rem;
      font-weight: 500;
      color: #374151;
      transition: background .2s, color .2s;
    }
    .nav-link-dock:hover {
      background: var(--light-blue);
      color: var(--primary);
    }
    .nav-link-dock.active {
      background: var(--primary);
      color: #fff;
    }
    .bottom-fixed-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      z-index: 50;
      background: rgba(255, 255, 255, 0.95);
      -webkit-backdrop-filter: blur(12px);
      backdrop-filter: blur(12px);
      border-top: 1px solid var(--border-blue);
      box-shadow: 0 -4px 20px rgba(15, 40, 90, 0.06);
    }
    body {
      padding-bottom: 4rem;
    }
    @media (min-width: 768px) {
      body {
        padding-bottom: 3.5rem;
      }
    }
    .section-space {
      padding-top: 4rem;
      padding-bottom: 4rem;
    }
    @media (min-width: 768px) {
      .section-space {
        padding-top: 6rem;
        padding-bottom: 6rem;
      }
    }
    .cta-box {
      background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
      border-radius: 1.5rem;
      padding: 3rem 1.5rem;
    }
    @media (min-width: 768px) {
      .cta-box {
        padding: 4.5rem 3rem;
      }
    }
    .input-base {
      width: 100%;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 0.75rem;
      padding: 0.8rem 1rem;
      font-size: 0.92rem;
      color: var(--text-heading);
      transition: border-color .2s, box-shadow .2s;
      outline: none;
    }
    .input-base:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(29, 111, 242, 0.12);
    }
    .footer-link {
      color: #9ca3af;
      transition: color .2s;
      font-size: 0.9rem;
    }
    .footer-link:hover {
      color: #fff;
    }
    @media (max-width: 640px) {
      .stat-card {
        padding: 1rem 0.5rem;
      }
      .feature-number {
        font-size: 2rem;
        width: 2.5rem;
      }
    }

/* roulang page: category1 */
:root {
            --primary: #1d6ff2;
            --primary-light: #f0f6fe;
            --accent: #f0a500;
            --text-heading: #111827;
            --text-body: #4b5563;
            --text-muted: #9ca3af;
            --border: #e5e7eb;
            --border-blue: #e2edf9;
            --radius-card: 1rem;
            --radius-sm: 0.75rem;
            --shadow-card: 0 4px 16px rgba(15, 40, 90, 0.06);
            --shadow-hover: 0 12px 32px rgba(15, 40, 90, 0.12);
            --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-cn);
            background: #ffffff;
            color: var(--text-body);
            line-height: 1.75;
            padding-bottom: 3.5rem;
        }

        @media (min-width: 768px) {
            body {
                padding-bottom: 4rem;
            }
        }

        .container-site {
            max-width: 80rem;
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        @media (min-width: 640px) {
            .container-site {
                padding: 0 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container-site {
                padding: 0 2rem;
            }
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-heading);
            line-height: 1.35;
        }

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

        a {
            transition: color 0.2s ease;
        }

        /* ---------- 浮动 Dock 导航 ---------- */
        .dock-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem;
            width: 100%;
            padding: 0.6rem 0.9rem;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(226, 237, 249, 0.85);
            border-radius: 9999px;
            box-shadow: 0 6px 24px rgba(15, 40, 90, 0.08);
        }

        .logo-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 2rem;
            height: 2rem;
            border-radius: 0.75rem;
            color: #1f2937;
            font-weight: 900;
            font-size: 1.1rem;
            background: linear-gradient(135deg, #f0a500, #f59e0b);
            box-shadow: 0 4px 10px rgba(240, 165, 0, 0.25);
        }

        .nav-link-dock {
            display: inline-flex;
            align-items: center;
            padding: 0.45rem 1.15rem;
            border-radius: 9999px;
            font-size: 0.92rem;
            font-weight: 500;
            color: #4b5563;
            transition: all 0.2s ease;
        }

        .nav-link-dock:hover {
            background: #f0f6fe;
            color: #1d6ff2;
        }

        .nav-link-dock.active {
            background: #1d6ff2;
            color: #ffffff;
            box-shadow: 0 4px 12px rgba(29, 111, 242, 0.25);
        }

        .btn-dock-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.45rem 1.1rem;
            border-radius: 9999px;
            background: #1d6ff2;
            color: #ffffff;
            font-size: 0.85rem;
            font-weight: 600;
            transition: all 0.2s ease;
        }

        .btn-dock-cta:hover {
            background: #155ed8;
            box-shadow: 0 6px 14px rgba(29, 111, 242, 0.25);
        }

        .mobile-menu {
            position: fixed;
            top: 1rem;
            left: 1rem;
            right: 1rem;
            background: #ffffff;
            border: 1px solid #e5e7eb;
            border-radius: 1.25rem;
            padding: 1.25rem;
            box-shadow: 0 18px 40px rgba(15, 40, 90, 0.16);
            z-index: 100;
        }

        .mobile-link {
            display: block;
            padding: 0.8rem 0;
            border-bottom: 1px solid #f3f4f6;
            color: #374151;
            font-weight: 500;
            font-size: 0.95rem;
        }

        .mobile-link:hover {
            color: #1d6ff2;
        }

        .mobile-link.active {
            color: #1d6ff2;
            font-weight: 700;
        }

        /* ---------- 按钮 ---------- */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: #1d6ff2;
            color: #ffffff;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.8rem 1.85rem;
            border-radius: 9999px;
            border: none;
            transition: all 0.2s ease;
            box-shadow: 0 4px 14px rgba(29, 111, 242, 0.18);
        }

        .btn-primary:hover {
            background: #155ed8;
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(29, 111, 242, 0.28);
        }

        .btn-primary:focus,
        .btn-outline:focus,
        .btn-gold:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(29, 111, 242, 0.35), 0 8px 22px rgba(29, 111, 242, 0.16);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: #ffffff;
            color: #1d6ff2;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.8rem 1.85rem;
            border-radius: 9999px;
            border: 1.5px solid #bfdbfe;
            transition: all 0.2s ease;
        }

        .btn-outline:hover {
            background: #f0f6fe;
            border-color: #1d6ff2;
            transform: translateY(-2px);
        }

        .btn-gold {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, #f0a500, #f59e0b);
            color: #1f2937;
            font-weight: 700;
            font-size: 0.98rem;
            padding: 0.85rem 2rem;
            border-radius: 9999px;
            border: none;
            transition: all 0.2s ease;
            box-shadow: 0 6px 18px rgba(240, 165, 0, 0.28);
        }

        .btn-gold:hover {
            background: linear-gradient(135deg, #d99100, #ea9500);
            transform: translateY(-2px);
            box-shadow: 0 10px 26px rgba(240, 165, 0, 0.35);
        }

        /* ---------- Hero ---------- */
        .hero-inner {
            position: relative;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
        }

        .hero-inner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(255, 255, 255, 0.96) 0%, rgba(240, 246, 254, 0.9) 55%, rgba(240, 246, 254, 0.6) 100%);
        }

        .badge-light {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: #ffffff;
            border: 1px solid #dbeafe;
            color: #1d6ff2;
            font-size: 0.82rem;
            font-weight: 600;
            padding: 0.35rem 1rem;
            border-radius: 9999px;
            box-shadow: 0 2px 8px rgba(15, 40, 90, 0.05);
        }

        /* ---------- 数据杠 ---------- */
        .data-item {
            text-align: center;
            padding: 1rem 0.5rem;
            border-radius: 0.85rem;
            transition: all 0.2s ease;
        }

        .data-item:hover {
            background: #f8fbff;
        }

        .data-number {
            font-size: 2rem;
            font-weight: 800;
            color: #111827;
            line-height: 1.2;
        }

        .data-label {
            color: #6b7280;
            font-size: 0.85rem;
            margin-top: 0.3rem;
        }

        /* ---------- 板块标题 ---------- */
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 3rem;
        }

        .section-head h2 {
            font-size: 1.75rem;
            font-weight: 800;
            color: #111827;
            letter-spacing: -0.02em;
        }

        .section-head p {
            margin-top: 0.8rem;
            color: #6b7280;
            font-size: 0.98rem;
            line-height: 1.8;
        }

        @media (min-width: 768px) {
            .section-head h2 {
                font-size: 2rem;
            }
        }

        /* ---------- 编号条列 ---------- */
        .feature-strip {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            padding: 1.6rem 1.2rem;
            border-bottom: 1px solid #eef2f7;
            border-radius: 1rem;
            transition: all 0.25s ease;
        }

        .feature-strip:hover {
            background: #f0f6fe;
            box-shadow: 0 8px 24px rgba(15, 40, 90, 0.08);
        }

        .feature-strip .num {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1;
            color: rgba(29, 111, 242, 0.18);
            min-width: 4rem;
            transition: all 0.25s ease;
            letter-spacing: -0.04em;
        }

        .feature-strip:hover .num {
            color: #1d6ff2;
        }

        .feature-strip .arrow {
            margin-left: auto;
            color: #9ca3af;
            font-size: 1.1rem;
            transition: all 0.25s ease;
        }

        .feature-strip:hover .arrow {
            transform: translateX(5px);
            color: #1d6ff2;
        }

        .feature-strip .strip-icon {
            width: 3rem;
            height: 3rem;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 0.85rem;
            background: #eaf2fd;
            color: #1d6ff2;
            font-size: 1.2rem;
        }

        .feature-strip:nth-child(1) {
            border-top: 1px solid #eef2f7;
        }

        @media (max-width: 640px) {
            .feature-strip {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.6rem;
            }
            .feature-strip .arrow {
                display: none;
            }
        }

        /* ---------- 卡片 ---------- */
        .module-card {
            background: #ffffff;
            border: 1px solid #eef2f7;
            border-radius: 1rem;
            padding: 1.6rem 1.4rem;
            box-shadow: 0 4px 16px rgba(15, 40, 90, 0.05);
            transition: all 0.25s ease;
            height: 100%;
        }

        .module-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 32px rgba(15, 40, 90, 0.12);
            border-color: #dbeafe;
        }

        .module-card .icon {
            width: 2.8rem;
            height: 2.8rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 0.8rem;
            background: #f0f6fe;
            color: #1d6ff2;
            font-size: 1.15rem;
            margin-bottom: 1rem;
        }

        .module-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
        }

        .module-card p {
            font-size: 0.9rem;
            color: #6b7280;
            line-height: 1.7;
        }

        .module-card .card-tag {
            display: inline-block;
            margin-bottom: 0.85rem;
            background: #f0f6fe;
            color: #1d6ff2;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 9999px;
            padding: 0.15rem 0.8rem;
        }

        /* ---------- 流程步骤 ---------- */
        .step-card {
            text-align: center;
            padding: 1.6rem 1.2rem;
            background: #ffffff;
            border: 1px solid #e5e7eb;
            border-radius: 1rem;
            transition: all 0.25s ease;
            position: relative;
        }

        .step-card:hover {
            border-color: #bfdbfe;
            box-shadow: 0 10px 28px rgba(15, 40, 90, 0.1);
            transform: translateY(-4px);
        }

        .step-num {
            width: 2.6rem;
            height: 2.6rem;
            margin: 0 auto 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #1d6ff2;
            border-radius: 9999px;
            color: #ffffff;
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: 0 6px 14px rgba(29, 111, 242, 0.25);
        }

        .step-card h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 0.3rem;
        }

        .step-card p {
            font-size: 0.88rem;
            color: #6b7280;
            line-height: 1.65;
        }

        /* ---------- 场景列表 ---------- */
        .scene-list {
            margin-top: 1.2rem;
            display: grid;
            gap: 0.7rem;
        }

        .scene-list li {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-size: 0.94rem;
            color: #4b5563;
        }

        .scene-list li i {
            color: #1d6ff2;
            font-size: 0.95rem;
        }

        .learn-more {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: #1d6ff2;
            font-weight: 600;
            font-size: 0.92rem;
            margin-top: 1.4rem;
            transition: all 0.2s ease;
        }

        .learn-more:hover {
            color: #155ed8;
        }

        .learn-more:hover i {
            transform: translateX(4px);
        }

        .learn-more i {
            transition: transform 0.2s ease;
        }

        /* ---------- FAQ ---------- */
        .faq-item {
            background: #ffffff;
            border: 1px solid #eef2f7;
            border-radius: 0.85rem;
            box-shadow: 0 2px 10px rgba(15, 40, 90, 0.04);
            overflow: hidden;
            transition: all 0.2s ease;
        }

        .faq-item:hover {
            border-color: #dbeafe;
        }

        .faq-q {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            padding: 1rem 1.2rem;
            font-weight: 500;
            font-size: 0.95rem;
            color: #1f2937;
            text-align: left;
            background: none;
            border: none;
            cursor: pointer;
            transition: background 0.2s ease;
        }

        .faq-q:hover {
            background: #f8fbff;
        }

        .faq-q i {
            color: #9ca3af;
            transform: rotate(45deg);
            font-size: 1rem;
            transition: transform 0.25s ease;
            flex-shrink: 0;
        }

        .faq-item.open .faq-q i {
            transform: rotate(0deg);
            color: #1d6ff2;
        }

        .faq-a {
            display: none;
            padding: 0 1.2rem 1.1rem;
            font-size: 0.9rem;
            color: #6b7280;
            line-height: 1.8;
            border-top: 1px dashed #eef2f7;
            margin-top: 0.2rem;
        }

        .faq-item.open .faq-a {
            display: block;
        }

        /* ---------- CTA ---------- */
        .cta-box {
            background: linear-gradient(135deg, #f0f6fe 0%, #dfebfa 100%);
            border: 1px solid #dbeafe;
            border-radius: 1.5rem;
            padding: 3rem 1.5rem;
        }

        @media (min-width: 768px) {
            .cta-box {
                padding: 4.5rem 4rem;
            }
        }

        .cta-form {
            max-width: 540px;
            margin: 2rem auto 0;
            text-align: left;
        }

        .cta-form input,
        .cta-form textarea {
            width: 100%;
            background: #ffffff;
            border: 1px solid #e5e7eb;
            border-radius: 0.85rem;
            padding: 0.75rem 1rem;
            font-size: 0.92rem;
            color: #1f2937;
            transition: all 0.2s ease;
            outline: none;
            font-family: inherit;
        }

        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: #1d6ff2;
            box-shadow: 0 0 0 3px rgba(29, 111, 242, 0.12);
        }

        .cta-form label {
            display: block;
            font-size: 0.88rem;
            font-weight: 500;
            color: #374151;
            margin-bottom: 0.35rem;
        }

        /* ---------- 页脚 ---------- */
        .footer-link {
            color: #94a3b8;
            font-size: 0.9rem;
            transition: all 0.2s ease;
        }

        .footer-link:hover {
            color: #ffffff;
        }

        /* ---------- 固定转化条 ---------- */
        .bottom-bar {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid #e2edf9;
            box-shadow: 0 -4px 20px rgba(15, 40, 90, 0.06);
        }

/* roulang page: article */
:root {
            --primary: #1d6ff2;
            --primary-dark: #1a5fd0;
            --primary-light: #f0f6fe;
            --accent: #f0a500;
            --text-dark: #111827;
            --text-body: #4b5563;
            --text-muted: #9ca3af;
            --border: #e5e7eb;
            --border-blue: #e2edf9;
            --radius-lg: 1rem;
            --radius-xl: 1.5rem;
            --shadow-card: 0 4px 16px rgba(15, 40, 90, 0.06);
            --shadow-hover: 0 12px 32px rgba(15, 40, 90, 0.12);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Inter", sans-serif;
            color: var(--text-body);
            background: #fff;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        .container-site {
            max-width: 80rem;
            margin: 0 auto;
            padding: 0 1rem;
        }
        @media (min-width: 640px) {
            .container-site {
                padding: 0 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .container-site {
                padding: 0 2rem;
            }
        }

        /* ===== 浮动 Dock 导航 ===== */
        .dock-nav {
            position: fixed;
            top: 1rem;
            left: 50%;
            transform: translateX(-50%);
            z-index: 50;
            width: calc(100% - 2rem);
            max-width: 56rem;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(226, 237, 249, 0.7);
            border-radius: 9999px;
            box-shadow: 0 10px 30px rgba(15, 40, 90, 0.08);
        }
        .logo-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 2rem;
            height: 2rem;
            border-radius: 9999px;
            background: linear-gradient(135deg, #f0a500, #f59e0b);
            color: #fff;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .nav-link-dock {
            display: inline-block;
            padding: 0.5rem 1rem;
            border-radius: 9999px;
            color: var(--text-body);
            font-size: 0.875rem;
            font-weight: 500;
            transition: all 0.2s ease;
            text-decoration: none;
        }
        .nav-link-dock:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-link-dock.active {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary-dock {
            display: inline-flex;
            align-items: center;
            background: var(--primary);
            color: #fff;
            font-size: 0.875rem;
            font-weight: 500;
            padding: 0.5rem 1.25rem;
            border-radius: 9999px;
            transition: all 0.2s ease;
            text-decoration: none;
        }
        .btn-primary-dock:hover {
            background: var(--primary-dark);
        }
        .mobile-menu-panel {
            position: fixed;
            inset: 0;
            z-index: 60;
            background: #fff;
            padding: 2rem 1.5rem;
            transform: translateY(-100%);
            transition: transform 0.3s ease;
            overflow-y: auto;
        }
        .mobile-menu-panel.open {
            transform: translateY(0);
        }
        @media (min-width: 768px) {
            .mobile-menu-panel {
                display: none;
            }
        }

        /* ===== 文章正文排版 ===== */
        .article-content {
            font-size: 1rem;
            line-height: 1.9;
            color: var(--text-body);
        }
        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-dark);
            margin: 2.5rem 0 1rem;
            padding-left: 0.75rem;
            border-left: 4px solid var(--primary);
            line-height: 1.4;
        }
        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-dark);
            margin: 2rem 0 0.75rem;
        }
        .article-content p {
            margin-bottom: 1.5rem;
        }
        .article-content ul,
        .article-content ol {
            margin: 0 0 1.5rem;
            padding-left: 1.5rem;
        }
        .article-content ul {
            list-style: disc;
        }
        .article-content ol {
            list-style: decimal;
        }
        .article-content li {
            margin-bottom: 0.5rem;
        }
        .article-content blockquote {
            margin: 1.5rem 0;
            padding: 1rem 1.5rem;
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
            border-radius: 0 1rem 1rem 0;
            color: var(--text-dark);
        }
        .article-content img {
            border-radius: 1rem;
            margin: 1.5rem 0;
            max-width: 100%;
            height: auto;
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
        }
        .article-content a:hover {
            color: var(--primary-dark);
        }
        .article-content strong {
            color: var(--text-dark);
        }

        /* ===== 标签胶囊 ===== */
        .tag-pill {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 9999px;
            padding: 0.25rem 1rem;
            font-size: 0.875rem;
            font-weight: 500;
        }

        /* ===== 卡片 ===== */
        .card-link-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            text-decoration: none;
            display: block;
        }
        .card-link-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--border-blue);
        }
        .card-link-item img {
            width: 100%;
            height: 12rem;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .card-link-item:hover img {
            transform: scale(1.03);
        }

        /* ===== 页脚 ===== */
        .footer-link {
            color: #94a3b8;
            font-size: 0.875rem;
            transition: color 0.2s;
            text-decoration: none;
        }
        .footer-link:hover {
            color: #fff;
        }

        /* ===== 底部固定转化条 ===== */
        .bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-top: 1px solid var(--border-blue);
            box-shadow: 0 -4px 20px rgba(15, 40, 90, 0.06);
        }

        /* ===== 按钮 ===== */
        .btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            border-radius: 9999px;
            padding: 0.75rem 1.5rem;
            transition: all 0.2s ease;
            text-decoration: none;
            border: none;
            cursor: pointer;
        }
        .btn-main:hover {
            background: var(--primary-dark);
        }
        .btn-main:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(29, 111, 242, 0.3);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #fff;
            border: 1px solid var(--border-blue);
            color: var(--primary);
            font-weight: 600;
            border-radius: 9999px;
            padding: 0.75rem 1.5rem;
            transition: all 0.2s ease;
            text-decoration: none;
        }
        .btn-outline:hover {
            background: var(--primary-light);
        }
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        @media (max-width: 640px) {
            .article-content {
                font-size: 0.95rem;
            }
            .article-content h2 {
                font-size: 1.3rem;
            }
        }