/* Help Center 页面样式 */

/* ── Hero ── */
.help-hero {
    background: var(--primary-gradient);
    color: #fff;
    padding: 56px 0 48px;
    text-align: center;
}
.help-hero h1 {
    font-size: 38px;
    font-weight: 800;
    margin: 0 0 12px;
    letter-spacing: -0.5px;
}
.help-hero-sub {
    font-size: 16px;
    opacity: 0.92;
    max-width: 640px;
    margin: 0 auto 28px;
    line-height: 1.6;
}
.help-search {
    display: flex;
    max-width: 560px;
    margin: 0 auto;
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 6px;
    box-shadow: var(--shadow-lg);
}
.help-search input {
    flex: 1;
    border: none;
    outline: none;
    padding: 12px 16px;
    font-size: 15px;
    color: var(--text-primary);
    background: transparent;
}
.help-search button {
    border: none;
    background: var(--primary-blue);
    color: #fff;
    font-weight: 600;
    font-size: 15px;
    padding: 0 24px;
    border-radius: var(--radius-base);
    cursor: pointer;
    transition: background 0.2s;
}
.help-search button:hover {
    background: var(--primary-blue-dark);
    color: #fff;
}

/* ── 卡片网格 ── */
.help-section {
    padding: 48px 0;
}
.help-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.help-card {
    background: var(--bg-surface, #fff);
    border: 1px solid var(--border-base);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s, transform 0.2s;
}
.help-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}
.help-card h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 18px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-blue-light);
}

/* ── FAQ 列表 ── */
.help-faq {
    list-style: none;
    margin: 0;
    padding: 0;
}
.help-faq li {
    padding: 14px 0;
    border-bottom: 1px solid var(--border-light);
}
.help-faq li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}
.help-q {
    display: block;
    font-weight: 600;
    font-size: 15px;
    color: var(--text-primary);
    margin-bottom: 6px;
}
.help-a {
    display: block;
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-tertiary);
}
.help-a a {
    color: var(--primary-blue);
    text-decoration: none;
}
.help-a a:hover {
    text-decoration: underline;
}

/* ── CTA ── */
.help-cta {
    background: var(--gray-100);
    border-top: 1px solid var(--border-base);
    padding: 48px 0;
}
.help-cta-inner {
    text-align: center;
}
.help-cta h2 {
    font-size: 26px;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0 0 10px;
}
.help-cta p {
    font-size: 15px;
    color: var(--text-tertiary);
    margin: 0 0 24px;
}
.help-cta-actions {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}
.help-cta-btn {
    display: inline-block;
    background: var(--primary-blue);
    color: #fff;
    font-weight: 600;
    font-size: 15px;
    padding: 12px 28px;
    border-radius: var(--radius-base);
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
}
.help-cta-btn:hover {
    background: var(--primary-blue-dark);
    color: #fff;
}
.help-cta-btn--ghost {
    background: transparent;
    color: var(--primary-blue);
    border: 1px solid var(--primary-blue);
}
.help-cta-btn--ghost:hover {
    background: var(--primary-blue-light);
    color: var(--primary-blue-dark);
}

/* ── 响应式 ── */
@media (max-width: 768px) {
    .help-grid {
        grid-template-columns: 1fr;
    }
    .help-hero {
        padding: 40px 0 36px;
    }
    .help-hero h1 {
        font-size: 30px;
    }
    .help-search {
        flex-direction: column;
        gap: 6px;
        background: transparent;
        box-shadow: none;
        padding: 0;
    }
    .help-search input {
        background: #fff;
        border-radius: var(--radius-base);
        box-shadow: var(--shadow-base);
    }
    .help-search button {
        padding: 12px;
    }
}