/* ============================================================
   Xcloud 子页面共享样式 (page.css)
   与 index.css / common.css 共用同一套设计语言：
   --primary-color(主色)  --gradient-color(辅色)  Song/Harmony 字体
   卡片：白底 + 1px #eee 边框 + 圆角 + 分层阴影 + hover 主色描边
   ============================================================ */

.A9-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.A9-section {
    padding: 64px 0;
}
.A9-section-alt {
    background: #f6f8fc;
}

/* ============ 子页 Hero ============ */
.A9-subhero {
    position: relative;
    background: linear-gradient(120deg, var(--primary-color, #0052D9) 0%, var(--gradient-color, #00A870) 100%);
    color: #fff;
    padding: 70px 0 78px;
    overflow: hidden;
}
.A9-subhero::after {
    content: "";
    position: absolute;
    right: -120px;
    top: -120px;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(255, 255, 255, .18), transparent 70%);
    border-radius: 50%;
}
.A9-subhero-inner {
    position: relative;
    z-index: 2;
}
.A9-crumb {
    font-size: 14px;
    opacity: .85;
    margin-bottom: 18px;
}
.A9-crumb a {
    color: #fff;
    text-decoration: none;
}
.A9-crumb a:hover {
    text-decoration: underline;
}
.A9-subhero-title {
    font-family: 'Song', sans-serif;
    font-size: 46px;
    font-weight: 900;
    margin: 0 0 16px;
    line-height: 1.2;
}
.A9-subhero-sub {
    font-size: 18px;
    opacity: .92;
    margin: 0 0 30px;
    max-width: 720px;
    line-height: 1.7;
}
.A9-subhero-btn {
    display: inline-block;
    padding: 13px 38px;
    background: #fff;
    color: var(--primary-color, #0052D9);
    border-radius: 8px;
    font-size: 17px;
    font-weight: 700;
    text-decoration: none;
    transition: all .3s ease;
    box-shadow: 0 8px 20px rgba(0, 0, 0, .12);
}
.A9-subhero-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 26px rgba(0, 0, 0, .2);
}
.A9-subhero-btns a {
    margin-right: 14px;
}

/* ============ 特性 / 功能网格 ============ */
.A9-feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
}
.A9-feature-grid.A9-3col {
    grid-template-columns: repeat(3, 1fr);
}
.A9-feature-grid.A9-4col {
    grid-template-columns: repeat(4, 1fr);
}
.A9-feature-card {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 12px;
    padding: 28px 24px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, .05), 0 1px 3px rgba(0, 0, 0, .08);
    transition: all .25s ease;
}
.A9-feature-card:hover {
    border-color: var(--primary-color, #0052D9);
    transform: translateY(-3px);
    box-shadow: 0 10px 22px rgba(0, 0, 0, .1);
}
.A9-feature-ico {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary-color, #0052D9), var(--gradient-color, #00A870));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    color: #fff;
}
.A9-feature-ico svg {
    width: 30px;
    height: 30px;
}
.A9-feature-card h3 {
    font-size: 19px;
    margin: 0 0 10px;
    color: #1a1a1a;
}
.A9-feature-card p {
    font-size: 14px;
    line-height: 1.75;
    color: #666;
    margin: 0;
}

/* ============ 架构 / 图文块 ============ */
.A9-arch-block {
    display: flex;
    gap: 48px;
    align-items: center;
}
.A9-arch-img {
    flex: 1;
    min-width: 0;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .12);
    background: linear-gradient(135deg, rgba(0, 82, 217, .12), rgba(0, 168, 112, .12));
    min-height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.A9-arch-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.A9-arch-text {
    flex: 1;
    min-width: 0;
}
.A9-arch-text h3 {
    font-size: 22px;
    color: var(--primary-color, #0052D9);
    margin: 0 0 12px;
    font-family: 'Song', sans-serif;
}
.A9-arch-text > p {
    font-size: 15px;
    line-height: 1.8;
    color: #555;
    margin: 0 0 18px;
}
.A9-check {
    list-style: none;
    padding: 0;
    margin: 0 0 22px;
}
.A9-check li {
    position: relative;
    padding-left: 30px;
    margin-bottom: 12px;
    font-size: 15px;
    color: #333;
    line-height: 1.6;
}
.A9-check li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 4px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary-color, #0052D9)
        url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>") center / 12px no-repeat;
}
.A9-link-btn {
    display: inline-block;
    padding: 11px 30px;
    border: 1px solid var(--primary-color, #0052D9);
    color: var(--primary-color, #0052D9);
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: all .25s ease;
}
.A9-link-btn:hover {
    background: var(--primary-color, #0052D9);
    color: #fff;
}

/* ============ 更多方案 / 相关卡片 ============ */
.A9-relate-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.A9-relate-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 30px 18px;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 12px;
    text-decoration: none;
    color: #1a1a1a;
    transition: all .25s ease;
}
.A9-relate-card:hover {
    border-color: var(--primary-color, #0052D9);
    transform: translateY(-3px);
    box-shadow: 0 10px 22px rgba(0, 0, 0, .1);
}
.A9-relate-card .A9-relate-ico {
    width: 48px;
    height: 48px;
    color: var(--primary-color, #0052D9);
}
.A9-relate-card span {
    font-size: 16px;
    font-weight: 600;
}

/* ============ 步骤 / 流程 ============ */
.A9-step-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    counter-reset: step;
}
.A9-step {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 12px;
    padding: 28px 22px;
    position: relative;
    transition: all .25s ease;
}
.A9-step:hover {
    border-color: var(--primary-color, #0052D9);
    transform: translateY(-3px);
}
.A9-step .A9-step-no {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color, #0052D9), var(--gradient-color, #00A870));
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
}
.A9-step h3 {
    font-size: 17px;
    margin: 0 0 8px;
}
.A9-step p {
    font-size: 14px;
    line-height: 1.7;
    color: #666;
    margin: 0;
}

/* ============ 数据指标 ============ */
.A9-stat-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    text-align: center;
}
.A9-stat {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 12px;
    padding: 30px 16px;
}
.A9-stat .A9-stat-num {
    font-size: 38px;
    font-weight: 800;
    color: var(--primary-color, #0052D9);
    font-family: 'Song', sans-serif;
}
.A9-stat .A9-stat-num .unit {
    font-size: 20px;
    margin-left: 2px;
}
.A9-stat .A9-stat-label {
    font-size: 15px;
    color: #666;
    margin-top: 6px;
}

/* ============ 案例 ============ */
.A9-case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}
.A9-case-card {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 12px;
    padding: 26px 22px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, .05);
    transition: all .25s ease;
}
.A9-case-card:hover {
    border-color: var(--primary-color, #0052D9);
    transform: translateY(-3px);
}
.A9-case-card .A9-case-tag {
    display: inline-block;
    font-size: 12px;
    color: var(--primary-color, #0052D9);
    background: rgba(0, 82, 217, .08);
    border-radius: 4px;
    padding: 3px 10px;
    margin-bottom: 14px;
}
.A9-case-card h3 {
    font-size: 18px;
    margin: 0 0 10px;
}
.A9-case-card p {
    font-size: 14px;
    line-height: 1.75;
    color: #666;
    margin: 0 0 14px;
}
.A9-case-card .A9-case-metric {
    font-size: 14px;
    color: var(--gradient-color, #00A870);
    font-weight: 600;
}

/* ============ 表格 ============ */
.A9-table-wrap {
    overflow-x: auto;
}
.A9-table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, .06);
    min-width: 720px;
}
.A9-table th,
.A9-table td {
    padding: 16px 18px;
    text-align: left;
    border-bottom: 1px solid #f0f0f0;
    font-size: 14px;
    color: #444;
}
.A9-table thead th {
    background: var(--primary-color, #0052D9);
    color: #fff;
    font-weight: 600;
}
.A9-table tbody tr:hover {
    background: #f7faff;
}
.A9-table .A9-price {
    color: var(--primary-color, #0052D9);
    font-weight: 700;
    font-size: 16px;
}

/* ============ FAQ ============ */
.A9-faq {
    max-width: 880px;
    margin: 0 auto;
}
.A9-faq-item {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 10px;
    margin-bottom: 14px;
    overflow: hidden;
}
.A9-faq-q {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 22px;
    font-size: 16px;
    font-weight: 600;
    color: #1a1a1a;
    cursor: pointer;
}
.A9-faq-q .A9-faq-ico {
    color: var(--primary-color, #0052D9);
    flex-shrink: 0;
}
.A9-faq-a {
    padding: 0 22px 18px 52px;
    font-size: 14px;
    line-height: 1.8;
    color: #666;
    display: none;
}
.A9-faq-item.A9-open .A9-faq-a {
    display: block;
}

/* ============ 通用行动号召条 ============ */
.A9-cta-bar {
    background: linear-gradient(120deg, var(--primary-color, #0052D9), var(--gradient-color, #00A870));
    border-radius: 16px;
    padding: 44px 40px;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}
.A9-cta-bar h2 {
    font-size: 26px;
    margin: 0 0 8px;
    font-family: 'Song', sans-serif;
}
.A9-cta-bar p {
    margin: 0;
    opacity: .92;
    font-size: 15px;
}
.A9-cta-bar a {
    background: #fff;
    color: var(--primary-color, #0052D9);
    padding: 13px 34px;
    border-radius: 8px;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    transition: all .25s ease;
}
.A9-cta-bar a:hover {
    transform: translateY(-2px);
}

/* ============ 富文本(详情/关于) ============ */
.A9-rich p {
    font-size: 15px;
    line-height: 1.9;
    color: #555;
    margin: 0 0 16px;
}
.A9-rich h3 {
    font-size: 20px;
    color: #1a1a1a;
    margin: 28px 0 12px;
}
.A9-img-block {
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .12);
    margin: 24px 0;
}
.A9-img-block img {
    width: 100%;
    display: block;
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
    .A9-subhero-title { font-size: 38px; }
    .A9-feature-grid.A9-3col,
    .A9-feature-grid.A9-4col { grid-template-columns: repeat(2, 1fr); }
    .A9-relate-grid { grid-template-columns: repeat(2, 1fr); }
    .A9-step-list { grid-template-columns: repeat(2, 1fr); }
    .A9-stat-row { grid-template-columns: repeat(2, 1fr); }
    .A9-case-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .A9-section { padding: 44px 0; }
    .A9-subhero { padding: 50px 0 56px; }
    .A9-subhero-title { font-size: 30px; }
    .A9-subhero-sub { font-size: 15px; }
    .A9-feature-grid,
    .A9-feature-grid.A9-3col,
    .A9-feature-grid.A9-4col,
    .A9-relate-grid,
    .A9-step-list,
    .A9-stat-row,
    .A9-case-grid { grid-template-columns: 1fr; }
    .A9-arch-block { flex-direction: column; gap: 24px; }
    .A9-cta-bar { flex-direction: column; text-align: center; }
}