/* ===== page-faq 专属样式 ===== */
.page-faq {
    --faq-hero-min-height: 320px;
    --faq-card-bg: var(--surface);
    --faq-border: var(--divider);
    --faq-summary-hover: var(--surface-light);
}

/* HERO 区域 */
.page-faq .faq-hero {
    position: relative;
    min-height: var(--faq-hero-min-height);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: var(--background);
}

.page-faq .hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    opacity: 0.35;
}

.page-faq .hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(13,27,42,0.85) 0%, rgba(27,94,32,0.7) 100%);
    pointer-events: none;
}

.page-faq .hero-content {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 3rem 1rem;
    text-align: center;
}

.page-faq .breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.page-faq .breadcrumb a {
    color: var(--secondary);
    text-decoration: none;
}

.page-faq .breadcrumb a:hover {
    text-decoration: underline;
}

.page-faq .breadcrumb .separator {
    color: var(--text-muted);
}

.page-faq .hero-title {
    font-family: var(--font-headings);
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: var(--text);
    margin: 0.5rem 0;
    letter-spacing: 0.02em;
    text-shadow: 0 2px 8px rgba(0,0,0,0.6);
}

.page-faq .hero-desc {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0.5rem auto 1.5rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* 搜索框 */
.page-faq .faq-search-wrapper {
    position: relative;
    max-width: 500px;
    margin: 0 auto;
}

.page-faq .faq-search-input {
    width: 100%;
    padding: 0.85rem 1rem 0.85rem 3rem;
    border: 2px solid var(--divider);
    border-radius: var(--radius);
    background: rgba(27,40,56,0.8);
    backdrop-filter: blur(4px);
    color: var(--text);
    font-size: 1rem;
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.page-faq .faq-search-input::placeholder {
    color: var(--text-muted);
}

.page-faq .faq-search-input:focus {
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(212,175,55,0.3);
}

.page-faq .search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

/* 内容区域 */
.page-faq .faq-content {
    padding: 3rem 1rem;
    max-width: var(--content-max-width);
    margin: 0 auto;
}

.page-faq .faq-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--gap);
}

@media (min-width: 768px) {
    .page-faq .faq-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .page-faq .faq-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* 分类卡片 */
.page-faq .faq-category {
    background: var(--faq-card-bg);
    border: 1px solid var(--faq-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: transform var(--transition), box-shadow var(--transition);
}

.page-faq .faq-category:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.page-faq .category-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--secondary);
}

.page-faq .category-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
}

.page-faq .category-title {
    font-family: var(--font-headings);
    font-size: 1.25rem;
    color: var(--text);
    margin: 0;
    letter-spacing: 0.02em;
}

/* FAQ 列表 */
.page-faq .faq-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.page-faq .faq-question {
    background: rgba(255,255,255,0.03);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid transparent;
    transition: border-color var(--transition);
}

.page-faq .faq-question[open] {
    border-color: var(--secondary);
}

.page-faq .faq-question summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1rem;
    cursor: pointer;
    font-weight: 500;
    color: var(--text);
    list-style: none;
    transition: background var(--transition);
    position: relative;
}

.page-faq .faq-question summary::-webkit-details-marker {
    display: none;
}

.page-faq .faq-question summary::after {
    content: '+';
    font-size: 1.5rem;
    line-height: 1;
    color: var(--secondary);
    transition: transform var(--transition);
    margin-left: 0.5rem;
    flex-shrink: 0;
}

.page-faq .faq-question[open] summary::after {
    content: '-';
    transform: rotate(180deg);
}

.page-faq .faq-question summary:hover {
    background: var(--faq-summary-hover);
}

.page-faq .faq-question .answer {
    padding: 0 1rem 1rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    animation: fadeExpand 0.3s ease-out;
}

.page-faq .faq-question .answer a {
    color: var(--secondary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.page-faq .faq-question .answer a:hover {
    color: var(--secondary-light);
}

.page-faq .answer-img {
    display: block;
    max-width: 100%;
    height: auto;
    border-radius: calc(var(--radius) / 2);
    margin-top: 0.75rem;
    object-fit: cover;
    object-position: center;
}

@keyframes fadeExpand {
    from {
        max-height: 0;
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        max-height: 500px;
        opacity: 1;
        transform: translateY(0);
    }
}

/* 移动端微调 */
@media (max-width: 767px) {
    .page-faq .faq-hero {
        min-height: 280px;
    }
    .page-faq .hero-content {
        padding: 2rem 1rem;
    }
    .page-faq .faq-content {
        padding: 2rem 1rem;
    }
    .page-faq .faq-category {
        padding: 1rem;
    }
}