/* ══ 产品优势卡片 ══ */
.adv-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    max-width: 1100px;
    margin: 0 auto;
}
.adv-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 32px 24px;
    text-align: left;
}
.adv-icon {
    width: 42px;
    height: 42px;
    background: var(--brand-bg);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 20px;
}
.adv-card h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 10px;
}
.adv-card p { font-size: 14px; color: var(--gray); line-height: 1.7; }

@media (max-width: 900px) { .adv-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .adv-grid { grid-template-columns: 1fr; } }

/* ══ 优势卡片悬浮效果 ══ */
.adv-card-has-tip {
    transition: transform 0.2s cubic-bezier(0.34,1.2,0.64,1),
                box-shadow 0.2s ease,
                border-color 0.2s ease;
}
.adv-card-has-tip:hover {
    transform: translateY(4px);
    box-shadow: 0 8px 20px rgba(24,84,255,0.08);
    border-color: rgba(24,84,255,0.3);
}
@media (hover: none) {
    .adv-card-has-tip:active {
        transform: translateY(4px);
        box-shadow: 0 8px 20px rgba(24,84,255,0.08);
        border-color: rgba(24,84,255,0.3);
    }
}

/* ══ 3 列网格（用于 6 卡片特色功能）══ */
.adv-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 1100px;
    margin: 0 auto;
}
@media (max-width: 900px) { .adv-grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .adv-grid-3 { grid-template-columns: 1fr; } }

/* ══ 客户案例卡片 ══ */
.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 1100px;
    margin: 0 auto;
}
.case-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 28px 24px;
}
.case-tag {
    display: inline-block;
    font-size: 12px;
    color: var(--teal);
    background: var(--teal-bg);
    padding: 3px 10px;
    border-radius: 4px;
    margin-bottom: 14px;
    font-weight: 500;
}
.case-card h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 10px;
    line-height: 1.5;
}
.case-card p { font-size: 13px; color: var(--gray); line-height: 1.75; }
.case-result {
    margin-top: 16px;
    font-size: 13px;
    color: var(--brand);
    font-weight: 500;
}

@media (max-width: 900px) { .case-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .case-grid { grid-template-columns: 1fr; } }

/* ══ 合作流程 ══ */
.process-wrap {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    max-width: 1000px;
    margin: 0 auto;
}
.process-item {
    flex: 1;
    text-align: center;
    padding: 0 10px;
    position: relative;
}
.process-item::after {
    content: '';
    position: absolute;
    top: 19px;
    left: calc(50% + 22px);
    right: calc(0% - 50% + 22px);
    width: calc(100% - 44px);
    height: 1px;
    background: var(--border);
}
.process-item:last-child::after { display: none; }
.process-num {
    width: 40px;
    height: 40px;
    background: var(--brand);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 700;
    margin: 0 auto 16px;
    position: relative;
    z-index: 1;
}
.process-item h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}
.process-item p { font-size: 13px; color: var(--gray); line-height: 1.65; }

@media (max-width: 768px) {
    .process-wrap { flex-direction: column; gap: 24px; align-items: center; }
    .process-item::after { display: none; }
    .process-item { width: 100%; max-width: 300px; }
}

/* ══ 对比表 ══ */
.cmp-wrap {
    max-width: 960px;
    margin: 0 auto;
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
}
.cmp-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.cmp-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 560px;
}
.cmp-table thead th {
    padding: 16px 20px;
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    color: var(--dark);
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
.cmp-table thead th:first-child {
    text-align: left;
    border-right: 1px solid var(--border);
}
.cmp-table thead th.cmp-hl {
    color: var(--brand);
    background: var(--brand-bg);
}
.cmp-table tbody td {
    padding: 16px 20px;
    text-align: center;
    border-bottom: 1px solid var(--border);
    color: var(--gray);
    line-height: 1.7;
    vertical-align: top;
    font-size: 13px;
}
.cmp-table tbody tr:last-child td { border-bottom: none; }
.cmp-table tbody td:first-child {
    text-align: left;
    font-weight: 500;
    color: var(--dark);
    background: var(--bg);
    border-right: 1px solid var(--border);
    white-space: nowrap;
}
.cmp-table tbody td.cmp-hl {
    background: #FAFBFF;
    color: var(--dark);
}

/* ══ 对比表移动端：table → 卡片堆叠 ══ */
@media (max-width: 640px) {
    .cmp-wrap { border-radius: 0; border-left: none; border-right: none; }
    .cmp-scroll { overflow-x: visible; }
    .cmp-table, .cmp-table tbody { display: block; min-width: unset; width: 100%; }
    .cmp-table thead { display: none; }
    .cmp-table tbody tr {
        display: grid;
        grid-template-columns: 1fr 1fr;
        border-bottom: 1px solid var(--border);
    }
    .cmp-table tbody tr:last-child { border-bottom: none; }
    .cmp-table tbody td {
        display: block;
        text-align: left;
        border: none;
        padding: 12px 16px;
        font-size: 13px;
        line-height: 1.65;
        white-space: normal;
    }
    .cmp-table tbody td:first-child {
        grid-column: 1 / -1;
        background: var(--bg);
        border-bottom: 1px solid var(--border);
        border-right: none;
        font-weight: 600;
        font-size: 13px;
        padding: 10px 16px;
    }
    .cmp-table tbody td:nth-child(2)::before {
        content: "通用大模型";
        display: block;
        font-size: 11px;
        font-weight: 500;
        color: var(--gray);
        margin-bottom: 5px;
        letter-spacing: 0.3px;
    }
    .cmp-table tbody td:nth-child(2) {
        border-right: 1px solid var(--border);
    }
    .cmp-table tbody td.cmp-hl::before {
        content: "✦ 新纪元数智";
        display: block;
        font-size: 11px;
        font-weight: 600;
        color: var(--brand);
        margin-bottom: 5px;
        letter-spacing: 0.3px;
    }
}

/* ══ FAQ ══ */
.faq-wrap { max-width: 760px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); padding: 28px 0; }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-q { font-size: 15px; font-weight: 600; color: var(--dark); margin-bottom: 12px; line-height: 1.5; }
.faq-a { font-size: 14px; color: var(--gray); line-height: 1.85; }