:root {
    color-scheme: light;
    --seo-bg: #fffaf6;
    --seo-surface: #ffffff;
    --seo-text: #241c18;
    --seo-muted: #766d68;
    --seo-accent: #d7443e;
    --seo-border: #eee2da;
}

* { box-sizing: border-box; }
body.seo-page { margin: 0; background: var(--seo-bg); color: var(--seo-text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.65; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--seo-accent); }
.seo-header, .seo-footer { max-width: 1120px; margin: 0 auto; padding: 18px 24px; display: flex; align-items: center; justify-content: space-between; }
.seo-header { border-bottom: 1px solid var(--seo-border); }
.seo-header nav { display: flex; gap: 18px; color: var(--seo-muted); font-size: 14px; }
.seo-brand { color: var(--seo-accent); font-size: 22px; font-weight: 800; letter-spacing: .2px; }
.seo-container { max-width: 1120px; margin: 0 auto; padding: 32px 24px 56px; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 24px; color: var(--seo-muted); font-size: 14px; }
.breadcrumb a { color: var(--seo-accent); }
.content-detail, .page-heading, .not-found-hero { background: var(--seo-surface); border: 1px solid var(--seo-border); border-radius: 18px; box-shadow: 0 8px 32px rgba(79, 35, 20, .05); }
.content-detail { padding: clamp(24px, 5vw, 56px); }
.content-detail h1, .page-heading h1, .not-found-hero h1 { margin: 0; font-size: clamp(30px, 4vw, 46px); line-height: 1.22; }
.eyebrow { margin: 0 0 8px; color: var(--seo-accent); font-size: 14px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.content-meta, .stock-status { color: var(--seo-muted); display: flex; gap: 16px; font-size: 14px; }
.hero-image { display: block; width: 100%; max-height: 560px; margin: 28px 0; border-radius: 14px; object-fit: cover; }
.rich-content { max-width: 760px; font-size: 17px; }
.rich-content h2, .related-section h2, .image-gallery h2, .product-detail-images h2 { font-size: 24px; margin-top: 38px; }
.rich-content p { margin: 0 0 1.25em; white-space: pre-wrap; }
.image-gallery { margin-top: 34px; }
.gallery-grid, .related-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; }
.gallery-grid img { width: 100%; aspect-ratio: 1; border-radius: 12px; object-fit: cover; }
.product-detail { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(300px, .9fr); gap: clamp(28px, 5vw, 56px); }
.product-gallery .hero-image { margin-top: 0; }
.product-thumbnails { grid-template-columns: repeat(4, 1fr); }
.product-price { margin: 18px 0 8px; color: var(--seo-accent); font-size: 30px; font-weight: 800; }
.related-section { margin-top: 40px; }
.related-grid { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.related-card { overflow: hidden; background: var(--seo-surface); border: 1px solid var(--seo-border); border-radius: 14px; transition: transform .2s ease, box-shadow .2s ease; }
.related-card:hover { transform: translateY(-3px); box-shadow: 0 8px 18px rgba(79, 35, 20, .12); }
.related-card img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.related-card h2, .related-card h3, .related-card p { margin: 12px 14px; }
.related-card h2, .related-card h3 { font-size: 17px; line-height: 1.4; }
.related-card p { color: var(--seo-muted); font-size: 14px; }
.page-heading { margin-bottom: 28px; padding: clamp(24px, 5vw, 48px); }
.page-heading > p:last-child { margin-bottom: 0; color: var(--seo-muted); }
.app-cta { max-width: 720px; margin: 0 auto 56px; padding: 28px; background: #2e201d; border-radius: 18px; color: #fff; text-align: center; }
.app-cta h2 { margin: 0; font-size: 24px; }
.app-cta p { color: #e6d6cd; }
.button-primary { display: inline-block; padding: 11px 20px; border-radius: 8px; background: var(--seo-accent); color: #fff; font-weight: 700; }
.button-primary:hover { color: #fff; background: #b82f2a; }
.not-found-page { padding-top: clamp(24px, 4vw, 48px); padding-bottom: 72px; }
.not-found-hero {
    position: relative;
    overflow: hidden;
    padding: clamp(32px, 7vw, 72px) clamp(20px, 6vw, 72px) clamp(26px, 5vw, 52px);
    text-align: center;
    isolation: isolate;
}
.not-found-hero::before,
.not-found-hero::after {
    position: absolute;
    z-index: -1;
    width: clamp(180px, 25vw, 320px);
    aspect-ratio: 1;
    border-radius: 50%;
    content: '';
    filter: blur(2px);
    opacity: .55;
}
.not-found-hero::before { top: -42%; left: -8%; background: radial-gradient(circle, rgba(215, 68, 62, .17), transparent 67%); }
.not-found-hero::after { right: -9%; bottom: -56%; background: radial-gradient(circle, rgba(244, 180, 137, .34), transparent 67%); }
.not-found-orbit {
    display: grid;
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    place-items: center;
    border: 1px solid rgba(215, 68, 62, .25);
    border-radius: 18px;
    background: rgba(215, 68, 62, .08);
    color: var(--seo-accent);
}
.not-found-orbit svg { width: 34px; height: 34px; }
.not-found-hero .eyebrow { margin-bottom: 3px; }
.not-found-code {
    margin: 0;
    color: rgba(215, 68, 62, .12);
    font-size: clamp(86px, 17vw, 166px);
    font-weight: 900;
    letter-spacing: -.09em;
    line-height: .86;
    user-select: none;
}
.not-found-hero h1 { margin-top: -2px; font-size: clamp(28px, 4vw, 44px); }
.not-found-lead { max-width: 560px; margin: 12px auto 0; color: var(--seo-muted); font-size: 16px; }
.not-found-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 24px; }
.button-secondary {
    display: inline-block;
    padding: 10px 19px;
    border: 1px solid var(--seo-border);
    border-radius: 8px;
    background: var(--seo-surface);
    color: var(--seo-text);
    font-weight: 700;
}
.button-secondary:hover { border-color: rgba(215, 68, 62, .45); color: var(--seo-accent); }
.not-found-shortcuts {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
    max-width: 800px;
    margin: clamp(30px, 5vw, 44px) auto 0;
    padding-top: clamp(22px, 4vw, 32px);
    border-top: 1px solid var(--seo-border);
    text-align: left;
}
.not-found-shortcut {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    padding: 11px 12px;
    border: 1px solid transparent;
    border-radius: 12px;
    transition: background .2s ease, border-color .2s ease, transform .2s ease;
}
.not-found-shortcut:hover { border-color: var(--seo-border); background: #fffaf8; color: var(--seo-text); transform: translateY(-2px); }
.not-found-shortcut-icon {
    display: grid;
    width: 30px;
    height: 30px;
    flex: 0 0 auto;
    place-items: center;
    border-radius: 9px;
    background: rgba(215, 68, 62, .1);
    color: var(--seo-accent);
    font-size: 18px;
    font-weight: 800;
}
.not-found-shortcut span:last-child { display: grid; min-width: 0; }
.not-found-shortcut strong { overflow: hidden; font-size: 14px; line-height: 1.3; text-overflow: ellipsis; white-space: nowrap; }
.not-found-shortcut small { overflow: hidden; color: var(--seo-muted); font-size: 11px; line-height: 1.3; text-overflow: ellipsis; white-space: nowrap; }
.not-found-discovery { margin-top: clamp(42px, 7vw, 76px); }
.not-found-section-heading { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.not-found-section-heading .eyebrow { margin-bottom: 2px; }
.not-found-section-heading h2 { margin: 0; font-size: clamp(24px, 3vw, 32px); line-height: 1.2; }
.not-found-section-link { flex: 0 0 auto; color: var(--seo-accent); font-size: 14px; font-weight: 700; }
.not-found-section-link span, .not-found-read-link span { display: inline-block; transition: transform .2s ease; }
.not-found-section-link:hover span, .not-found-knowledge-card:hover .not-found-read-link span { transform: translateX(3px); }
.not-found-product-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 14px; }
.not-found-product-card,
.not-found-knowledge-card {
    overflow: hidden;
    border: 1px solid var(--seo-border);
    border-radius: 16px;
    background: var(--seo-surface);
    box-shadow: 0 6px 20px rgba(79, 35, 20, .035);
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.not-found-product-card:hover,
.not-found-knowledge-card:hover { border-color: rgba(215, 68, 62, .35); box-shadow: 0 12px 28px rgba(79, 35, 20, .1); transform: translateY(-3px); }
.not-found-product-card a { display: block; height: 100%; }
.not-found-product-image {
    display: grid;
    aspect-ratio: 1 / .82;
    place-items: center;
    overflow: hidden;
    background: #f9f2ed;
    color: var(--seo-muted);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .04em;
}
.not-found-product-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
.not-found-product-card:hover .not-found-product-image img { transform: scale(1.04); }
.not-found-card-copy { min-width: 0; padding: 12px 13px 13px; text-align: left; }
.not-found-card-copy h3 { display: -webkit-box; overflow: hidden; margin: 0; -webkit-box-orient: vertical; -webkit-line-clamp: 2; font-size: 14px; line-height: 1.42; }
.not-found-product-price { margin: 7px 0 0; color: var(--seo-accent); font-size: 14px; font-weight: 800; }
.not-found-knowledge-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.not-found-knowledge-card a { display: grid; grid-template-columns: 104px minmax(0, 1fr); min-height: 124px; color: inherit; }
.not-found-knowledge-card img { width: 104px; height: 124px; object-fit: cover; }
.not-found-knowledge-card .not-found-card-copy { display: flex; flex-direction: column; justify-content: center; padding: 14px 15px; }
.not-found-knowledge-card .not-found-card-copy p { display: -webkit-box; overflow: hidden; margin: 5px 0 0; color: var(--seo-muted); -webkit-box-orient: vertical; -webkit-line-clamp: 2; font-size: 12px; line-height: 1.5; }
.not-found-read-link { margin-top: 9px; color: var(--seo-accent); font-size: 12px; font-weight: 700; }
.seo-footer { color: var(--seo-muted); font-size: 13px; justify-content: center; }

@media (max-width: 720px) {
    .seo-header, .seo-footer, .seo-container { padding-left: 16px; padding-right: 16px; }
    .product-detail { grid-template-columns: 1fr; }
    .content-detail { padding: 24px; }
    .gallery-grid, .related-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .not-found-page { padding-top: 20px; padding-bottom: 48px; }
    .not-found-hero { padding: 32px 18px 20px; }
    .not-found-shortcuts { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
    .not-found-shortcut { padding: 9px; }
    .not-found-product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
    .not-found-knowledge-grid { grid-template-columns: 1fr; gap: 12px; }
    .not-found-knowledge-card a { grid-template-columns: 94px minmax(0, 1fr); min-height: 112px; }
    .not-found-knowledge-card img { width: 94px; height: 112px; }
}

@media (min-width: 721px) and (max-width: 1050px) {
    .not-found-product-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .not-found-knowledge-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* 商品详情页：复刻 Telegram Mini App 的深色购买弹窗视觉。 */
body.seo-page.seo-product-page {
    color-scheme: dark;
    --product-bg: #0d1b2a;
    --product-surface: hsl(213, 35%, 16%);
    --product-surface-raised: hsl(213, 35%, 18%);
    --product-border: #2d3e50;
    --product-text: #ffffff;
    --product-muted: #8e99a4;
    --product-green: #00ff88;
    --product-red: #ff4757;
    min-height: 100vh;
    background: var(--product-bg);
    color: var(--product-text);
}
html:has(body.seo-product-page) { background: #0d1b2a; }
html.tg-mini-app,
html.tg-mini-app body.seo-page,
html.tg-mini-app body.seo-product-page,
html.tg-mini-app body.seo-category-page,
html.tg-mini-app body.seo-knowledge-page { background: #0d1b2a !important; }
.seo-product-page .seo-header,
.seo-product-page .seo-footer {
    max-width: 1180px;
    color: var(--product-text);
}
.seo-product-page .seo-header { border-bottom-color: var(--product-border); }
.seo-product-page .seo-header nav,
.seo-product-page .seo-footer { color: var(--product-muted); }
.seo-product-page .seo-brand { color: var(--product-green); }
.seo-product-page a:hover { color: var(--product-green); }
.seo-product-page .breadcrumb { color: var(--product-muted); }
.seo-product-page .breadcrumb a { color: var(--product-green); }
.seo-product-container {
    max-width: 1180px;
    padding-top: 24px;
}
.product-browser-detail {
    overflow: hidden;
    background: var(--product-bg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    box-shadow: 0 28px 90px rgba(0, 0, 0, 0.42);
}
.product-detail-page { padding: 0; }
.product-detail-visual {
    min-width: 0;
    padding: 48px 0 40px 48px;
    background: linear-gradient(145deg, rgba(30, 58, 95, 0.35), rgba(13, 27, 42, 0.08));
}
.product-visual-gallery { width: 100%; }
.product-detail-carousel {
    position: relative;
    overflow: hidden;
    background: var(--product-surface);
    border: 1px solid var(--product-border);
    border-radius: 18px;
    box-shadow: 0 18px 46px rgba(0, 0, 0, 0.22);
}
.product-page-main-image {
    display: block;
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: contain;
    background: var(--product-surface);
}
.product-detail-gallery-arrow {
    position: absolute;
    z-index: 2;
    top: 50%;
    display: grid;
    width: 38px;
    height: 42px;
    place-items: center;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, .26);
    border-radius: 12px;
    background: rgba(6, 20, 32, .70);
    color: var(--product-text);
    font: inherit;
    font-size: 32px;
    line-height: 1;
    cursor: pointer;
    opacity: 0;
    transform: translateY(-50%);
    transition: opacity .2s ease, background .2s ease, color .2s ease;
}
.product-detail-carousel:hover .product-detail-gallery-arrow,
.product-detail-gallery-arrow:focus-visible { opacity: 1; }
.product-detail-gallery-arrow.previous { left: 12px; }
.product-detail-gallery-arrow.next { right: 12px; }
.product-detail-gallery-arrow:hover { color: var(--product-green); background: rgba(6, 35, 28, .88); }
.product-detail-gallery-arrow:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
.product-detail-counter {
    position: absolute;
    right: 16px;
    bottom: 16px;
    padding: 4px 10px;
    color: var(--product-text);
    font-size: 12px;
    background: rgba(10, 22, 40, 0.74);
    border-radius: 999px;
}
.product-detail-thumbnails {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 10px;
    margin-top: 14px;
}
.product-detail-thumbnail {
    width: 100%;
    aspect-ratio: 1 / 1;
    padding: 0;
    overflow: hidden;
    cursor: pointer;
    background: var(--product-surface);
    border: 2px solid transparent;
    border-radius: 12px;
    opacity: .62;
    transition: opacity .2s ease, border-color .2s ease, transform .2s ease;
}
.product-detail-thumbnail.active { border-color: var(--product-green); opacity: 1; }
.product-detail-thumbnail:hover { border-color: rgba(94, 234, 212, .8); opacity: 1; transform: translateY(-2px); }
.product-detail-thumbnail:focus-visible { border-color: var(--product-green); opacity: 1; outline: 2px solid #fff; outline-offset: 2px; }
.product-detail-thumbnail img { display: block; width: 100%; height: 100%; object-fit: cover; }
.product-detail-info {
    min-width: 0;
    padding: 52px 48px 48px;
    overflow-y: auto;
    overscroll-behavior: contain;
    background: var(--product-bg);
}
.seo-product-page .eyebrow { color: var(--product-green); }
.product-detail-title {
    margin: 0 0 12px;
    color: var(--product-text);
    font-size: clamp(24px, 2.1vw, 30px);
    line-height: 1.28;
    letter-spacing: -.02em;
}
.product-detail-price {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin: 0 0 12px;
    color: var(--product-green);
    font-size: clamp(26px, 7vw, 32px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -.02em;
}
.product-price-status {
    display: inline-flex;
    align-items: center;
    min-height: 27px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .01em;
}
.product-price-status.available { color: #06291a; background: var(--product-green); }
.product-price-status.unavailable { color: #fff; background: var(--product-red); }
.product-detail-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 10px;
    padding-bottom: 18px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--product-border);
}
.product-detail-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 9px;
    font-size: 12px;
    line-height: 1.2;
    border-radius: 999px;
}
.product-detail-badge.badge-success { color: #06291a; background: var(--product-green); }
.product-detail-badge.badge-error { color: #fff; background: var(--product-red); }
.product-detail-badge.badge-info { color: #d9f7ff; background: #1e5c75; }
.product-detail-stock { color: var(--product-muted); font-size: 12px; }
.seo-product-page .product-detail-desc { max-width: none; margin: 22px 0; color: var(--product-text); font-size: 15px; line-height: 1.75; }
.seo-product-page .product-detail-desc h2 { margin: 0 0 10px; color: var(--product-text); font-size: 17px; }
.seo-product-page .product-detail-desc p { margin: 0 0 1em; white-space: pre-wrap; }
.seo-product-page .product-detail-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 12px 16px;
    padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px));
    background: rgba(20, 38, 57, .97);
    border-top: 1px solid var(--product-border);
    box-shadow: 0 -10px 30px rgba(0, 0, 0, .22);
    backdrop-filter: blur(20px) saturate(150%);
    -webkit-backdrop-filter: blur(20px) saturate(150%);
}
@media (max-width: 959px) {
    .seo-product-page .product-page-shell {
        padding-bottom: calc(56px + 140px);
    }
}
.product-telegram-copy { display: grid; gap: 4px; margin-bottom: 14px; }
.seo-product-page .product-page-specs { display: grid; gap: 16px; margin: 18px 0; }
.seo-product-page .product-page-desktop-specs { display: none; }
.seo-product-page .product-page-spec-group { display: grid; gap: 9px; }
.seo-product-page .product-page-spec-group > strong { color: var(--product-text); font-size: 14px; }
.seo-product-page .product-page-spec-options { display: flex; flex-wrap: wrap; gap: 9px; }
.seo-product-page .spec-option-tag { min-height: 38px; padding: 8px 13px; border: 1px solid var(--product-border); border-radius: 10px; background: var(--product-surface-raised); color: var(--product-text); font: inherit; font-size: 13px; cursor: pointer; transition: border-color .2s ease, background .2s ease, color .2s ease; }
.seo-product-page .spec-option-tag.selected { border-color: var(--product-green); background: rgba(0, 255, 136, .1); color: var(--product-green); }
.seo-product-page .spec-option-tag.disabled { opacity: .4; cursor: not-allowed; text-decoration: line-through; }
.seo-product-page .product-page-purchase-bar { display: grid; gap: 10px; }
.seo-product-page .product-page-selection-row { display: flex; min-width: 0; align-items: center; gap: 10px; }
.seo-product-page .product-page-purchase-bar.single-sku .product-page-selection-row { justify-content: flex-end; }
.seo-product-page .product-page-spec-trigger, .seo-product-page .product-page-stock-summary { display: flex; min-width: 0; flex: 1; align-items: center; gap: 7px; min-height: 48px; padding: 8px 11px; overflow: hidden; border: 1px solid var(--product-border); border-radius: 12px; background: var(--product-bg); color: var(--product-text); text-align: left; }
.seo-product-page .product-page-spec-trigger { cursor: pointer; }
.seo-product-page .product-page-spec-trigger span, .seo-product-page .product-page-stock-summary span { flex: 0 0 auto; color: var(--product-muted); font-size: 12px; }
.seo-product-page .product-page-stock-summary strong { color: var(--product-green); font-size: 16px; }
.seo-product-page .product-page-spec-trigger strong { min-width: 0; overflow: hidden; color: var(--product-text); font-size: 13px; text-overflow: ellipsis; white-space: nowrap; }
.seo-product-page .product-page-spec-trigger i { margin-left: auto; color: var(--product-muted); font-size: 22px; font-style: normal; line-height: 1; }
.seo-product-page .product-page-action-row { display: grid; grid-template-columns: 48px minmax(0, 1fr) 48px; gap: 9px; }
.seo-product-page .product-page-inline-quantity { min-width: 0; }
.seo-product-page .product-page-quantity-control { display: grid; grid-template-columns: repeat(3, 34px); width: 102px; height: 48px; overflow: hidden; border: 1px solid var(--product-border); border-radius: 12px; background: var(--product-bg); }
.seo-product-page .product-page-quantity-control button, .seo-product-page .product-page-quantity-control span { display: grid; width: 34px; place-items: center; margin: 0; padding: 0; border: 0; color: var(--product-text); font: inherit; }
.seo-product-page .product-page-quantity-control button { background: transparent; font-size: 21px; cursor: pointer; }
.seo-product-page .product-page-quantity-control button:disabled { color: var(--product-muted); cursor: not-allowed; }
.seo-product-page .product-page-quantity-control span { border-inline: 1px solid var(--product-border); font-weight: 700; }
.seo-product-page .product-detail-cart-btn, .seo-product-page .product-detail-share-btn { display: grid; width: 48px; height: 48px; place-items: center; padding: 0; border: 1px solid var(--product-border); border-radius: 13px; background: var(--product-bg); color: var(--product-text); cursor: pointer; }
.seo-product-page .product-detail-cart-btn { position: relative; overflow: visible; }
.seo-product-page .product-detail-cart-btn svg, .seo-product-page .product-detail-share-btn svg { width: 21px; height: 21px; }
.seo-product-page .product-detail-btn { min-height: 48px; border: 0; cursor: pointer; }
.seo-product-page .product-detail-btn:disabled { cursor: not-allowed; filter: grayscale(1); opacity: .55; transform: none; }
.telegram-browser-auth-choice { position: fixed; z-index: 10500; inset: 0; display: grid; place-items: center; padding: 20px; }
.telegram-browser-auth-backdrop { position: absolute; inset: 0; width: 100%; border: 0; background: rgba(1, 8, 18, .72); cursor: default; }
.telegram-browser-auth-card { position: relative; z-index: 1; display: grid; width: min(420px, 100%); gap: 14px; padding: 26px; border: 1px solid var(--product-border, var(--knowledge-border)); border-radius: 18px; background: var(--product-surface, var(--knowledge-surface)); box-shadow: 0 22px 58px rgba(0, 0, 0, .42); }
.telegram-browser-auth-card strong { padding-right: 32px; color: var(--product-text, var(--knowledge-text)); font-size: 19px; }
.telegram-browser-auth-card p { margin: 0; color: var(--product-muted, var(--knowledge-muted)); font-size: 14px; line-height: 1.65; }
.telegram-browser-auth-close { position: absolute; top: 14px; right: 14px; display: grid; width: 30px; height: 30px; place-items: center; padding: 0; border: 1px solid var(--product-border, var(--knowledge-border)); border-radius: 50%; background: var(--product-bg, var(--knowledge-bg)); color: var(--product-text, var(--knowledge-text)); font-size: 20px; cursor: pointer; }
.telegram-browser-auth-login, .telegram-browser-auth-mini { min-height: 46px; border-radius: 12px; font: inherit; font-weight: 800; cursor: pointer; }
.telegram-browser-auth-login { border: 0; background: var(--product-green, var(--knowledge-green)); color: #06291a; }
.telegram-browser-auth-mini { border: 1px solid var(--product-border, var(--knowledge-border)); background: var(--product-bg, var(--knowledge-bg)); color: var(--product-text, var(--knowledge-text)); }
.seo-product-page .product-page-spec-sheet { position: fixed; inset: 0; z-index: 10400; }
.seo-product-page .product-page-spec-backdrop { position: absolute; inset: 0; width: 100%; border: 0; background: rgba(1, 8, 18, .68); cursor: default; }
.seo-product-page .product-page-spec-sheet-content { position: absolute; right: 0; bottom: 0; left: 0; max-height: min(74vh, 640px); padding: 18px 20px max(18px, env(safe-area-inset-bottom, 0px)); overflow-y: auto; border: 1px solid var(--product-border); border-bottom: 0; border-radius: 24px 24px 0 0; background: var(--product-surface); box-shadow: 0 -18px 48px rgba(0, 0, 0, .35); }
.seo-product-page .product-page-spec-sheet-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.seo-product-page .product-page-spec-sheet-header h2 { margin: 0; color: var(--product-text); font-size: 18px; }
.seo-product-page .product-page-spec-sheet-header button { display: grid; width: 34px; height: 34px; place-items: center; border: 1px solid var(--product-border); border-radius: 50%; background: var(--product-bg); color: var(--product-text); font-size: 22px; cursor: pointer; }
.seo-product-page .product-page-spec-sheet-summary { display: flex; align-items: baseline; gap: 10px; padding: 16px 0; border-bottom: 1px solid var(--product-border); }
.seo-product-page .product-page-spec-sheet-summary strong { color: var(--product-green); font-size: 21px; }
.seo-product-page .product-page-spec-sheet-summary span { color: var(--product-muted); font-size: 13px; }
.seo-product-page .product-page-sheet-quantity { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; border-top: 1px solid var(--product-border); color: var(--product-text); font-weight: 600; }
.seo-product-page .product-page-spec-confirm { width: 100%; min-height: 50px; border: 0; border-radius: 14px; background: var(--product-green); color: #06291a; font: inherit; font-weight: 800; cursor: pointer; }
.seo-product-page .product-page-spec-confirm:disabled { opacity: .55; cursor: not-allowed; }
.product-telegram-copy strong { color: var(--product-text); font-size: 15px; }
.product-telegram-copy span { color: var(--product-muted); font-size: 13px; line-height: 1.6; }
.product-detail-action-row { display: flex; gap: 12px; }
.product-detail-btn {
    display: flex;
    flex: 1;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    padding: 12px 18px;
    color: #06291a;
    font-weight: 800;
    background: var(--product-green);
    border-radius: 14px;
    transition: transform .2s ease, filter .2s ease;
}
.product-detail-btn.cash { color: #fff; background: var(--product-red); }
.product-detail-btn:hover { color: inherit; filter: brightness(1.06); transform: translateY(-1px); }
.seo-product-page .product-detail-images {
    margin-top: 28px;
    padding: 0;
    overflow: hidden;
    line-height: 0;
}
.seo-product-page .product-detail-images h2 { margin: 0 0 16px; color: var(--product-text); font-size: 18px; line-height: 1.4; }
.seo-product-page .product-detail-images img { display: block; width: 100%; height: auto; margin: 0; border-radius: 0; vertical-align: top; }
.product-related-section { margin-top: 40px; }
.seo-product-page .related-section h2 { color: var(--product-text); }
.seo-product-page .related-card { background: var(--product-surface); border-color: var(--product-border); }
.seo-product-page .related-card h3 { color: var(--product-text); }
.seo-product-page .related-card p { color: var(--product-green); }
.seo-product-page .app-cta { background: var(--product-surface); border: 1px solid var(--product-border); }
.seo-product-page .app-cta p { color: var(--product-muted); }
.seo-product-page .button-primary { color: #06291a; background: var(--product-green); }

@media (max-width: 959px) {
    .seo-product-container { padding-top: 18px; }
    .product-browser-detail { border-radius: 18px; }
    .product-detail-visual { padding: 18px 18px 0; }
    .product-detail-info { padding: 28px 24px 32px; overflow: visible; }
    .product-detail-thumbnails { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; scrollbar-width: thin; }
    .product-detail-thumbnail { flex: 0 0 58px; width: 58px; height: 58px; }
}
@media (max-width: 480px) {
    .seo-product-container { padding-left: 12px; padding-right: 12px; }
    body.seo-product-page[data-telegram-runtime="mini_app"] #product-purchase { padding-right: 12px; padding-left: 12px; }
    .product-detail-visual { padding: 12px 12px 0; }
    .product-detail-info { padding: 24px 18px 28px; }
    .product-detail-title { font-size: 24px; }
}

/* 独立页保留旧弹窗的外壳、返回控件与内容容器，不再使用文章型页面头尾。 */
.product-page-shell {
    display: flow-root;
    width: min(1180px, 100%);
    min-height: 100vh;
    margin: 0 auto;
    padding: 32px 24px 56px;
    background: var(--product-bg);
}
.product-browser-detail { position: relative; }
/* 保留单指浏览与横向商品轨道滑动，同时禁止浏览器把双指手势识别为页面缩放。 */
body.seo-product-page[data-telegram-runtime="mini_app"] { touch-action: pan-x pan-y; }
body.seo-product-page[data-telegram-runtime="mini_app"] .product-page-header { display: none; }
body.seo-product-page[data-telegram-runtime="mini_app"] .product-detail-meta { display: none; }
body.seo-product-page[data-telegram-runtime="mini_app"] .product-detail-footer { margin: 0; padding: 0; border: 0; background: transparent; }
body.seo-product-page[data-telegram-runtime="mini_app"] .product-page-shell { padding-bottom: 104px; }
body.seo-product-page[data-telegram-runtime="mini_app"] #product-purchase { position: fixed; right: 0; bottom: 0; left: 0; z-index: 10300; padding: 10px 14px max(10px, env(safe-area-inset-bottom, 0px)); border-top: 1px solid var(--product-border); background: rgba(20, 38, 57, .97); box-shadow: 0 -10px 30px rgba(0, 0, 0, .22); }
.product-page-header {
    position: absolute;
    top: 20px;
    right: 20px;
    left: 20px;
    z-index: 5;
    display: flex;
    justify-content: space-between;
    pointer-events: none;
}
.fullscreen-modal-back,
.fullscreen-modal-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--product-text);
    font-size: 22px;
    line-height: 1;
    pointer-events: auto;
    background: rgba(10, 19, 35, .72);
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: 50%;
    transition: background .2s ease, border-color .2s ease, transform .2s ease;
}
.fullscreen-modal-back:hover,
.fullscreen-modal-close:hover,
.fullscreen-modal-back:focus-visible,
.fullscreen-modal-close:focus-visible {
    color: var(--product-text);
    background: rgba(0, 255, 136, .14);
    border-color: var(--product-green);
    outline: none;
    transform: scale(.96);
}
.product-runtime-notice {
    margin: 12px 0 0;
    padding-top: 12px;
    color: var(--product-muted);
    font-size: 12px;
    line-height: 1.55;
    border-top: 1px solid var(--product-border);
}
.product-related-section { padding: 0 2px; }

/* 商品详情页的相关推荐使用紧凑横向轨道，避免单张卡片撑开整屏。 */
.seo-product-page .product-related-section {
    margin-top: 28px;
    padding: 24px 0 32px;
    background: var(--product-bg);
}
.seo-product-page .product-related-section h2 {
    margin: 0 0 14px;
    padding: 0 2px;
    color: var(--product-text);
    font-size: 18px;
    line-height: 1.35;
}
.seo-product-page .product-related-section .related-grid {
    display: flex;
    gap: 12px;
    padding: 0 2px 4px;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
    scroll-snap-type: x proximity;
}
.seo-product-page .product-related-section .related-grid::-webkit-scrollbar { display: none; }
.seo-product-page .product-related-section .related-card {
    flex: 0 0 164px;
    min-width: 0;
    border-radius: 12px;
    scroll-snap-align: start;
}
.seo-product-page .product-related-section .related-card a {
    display: block;
    height: 100%;
    color: inherit;
    text-decoration: none;
}
.seo-product-page .product-related-section .related-card img {
    aspect-ratio: 1 / 1;
    object-fit: cover;
}
.seo-product-page .product-related-section .related-card h3 {
    display: -webkit-box;
    margin: 10px 12px 5px;
    overflow: hidden;
    color: var(--product-text);
    font-size: 14px;
    line-height: 1.35;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}
.seo-product-page .product-related-section .related-card p {
    margin: 0 12px 12px;
    color: var(--product-green);
    font-size: 14px;
    font-weight: 700;
}

/* 商品详情的桌面端通用导航与页脚，视觉与商城首页保持一致。 */
.product-page-desktop-nav { display: none; }

/* 移动端页脚样式（复用 .mall-desktop-footer 的移动端样式体系） */
.product-page-desktop-footer,
.knowledge-page-desktop-footer {
    display: block;
    margin-top: 48px;
    padding: 28px 20px 20px;
    background: var(--product-bg-tertiary, #0f172a);
    border-top: 1px solid var(--product-border-primary);
    color: var(--product-muted, #94A3B8);
    font-size: 13px;
    line-height: 1.6;
}
.knowledge-page-desktop-footer {
    background: var(--knowledge-bg-tertiary, #0f172a);
    border-top-color: var(--knowledge-border-primary);
    color: var(--knowledge-muted, #94A3B8);
}
.product-page-desktop-footer .footer-chrome-inner,
.knowledge-page-desktop-footer .footer-chrome-inner {
    max-width: 100%;
    margin: 0 auto;
}
.product-page-desktop-footer .footer-columns,
.knowledge-page-desktop-footer .footer-columns {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.product-page-desktop-footer .footer-col h3,
.knowledge-page-desktop-footer .footer-col h3 {
    margin: 0 0 12px;
    color: var(--product-text, #F8FAFC);
    font-size: 13px;
    font-weight: 600;
}
.knowledge-page-desktop-footer .footer-col h3 {
    color: var(--knowledge-text, #F8FAFC);
}
/* 品牌列：左对齐 */
.product-page-desktop-footer .footer-col-brand,
.knowledge-page-desktop-footer .footer-col-brand {
    text-align: left;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.product-page-desktop-footer .footer-col-brand > div,
.knowledge-page-desktop-footer .footer-col-brand > div {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
}
.product-page-desktop-footer .footer-col-brand strong,
.knowledge-page-desktop-footer .footer-col-brand strong {
    font-size: 18px;
    color: var(--product-text, #F8FAFC);
    letter-spacing: -.02em;
    font-weight: 700;
}
.knowledge-page-desktop-footer .footer-col-brand strong {
    color: var(--knowledge-text, #F8FAFC);
}
.product-page-desktop-footer .footer-col-brand span,
.knowledge-page-desktop-footer .footer-col-brand span {
    font-size: 12px;
    color: var(--product-muted, #64748B);
}
.knowledge-page-desktop-footer .footer-col-brand span {
    color: var(--knowledge-muted, #64748B);
}
/* 支付方式：4 列网格，左对齐 */
.product-page-desktop-footer .footer-payment-methods,
.knowledge-page-desktop-footer .footer-payment-methods {
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}
.product-page-desktop-footer .footer-payment-label,
.knowledge-page-desktop-footer .footer-payment-label {
    display: block;
    margin-bottom: 10px;
    font-size: 11px;
    color: var(--product-muted, #64748B);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: .08em;
}
.knowledge-page-desktop-footer .footer-payment-label {
    color: var(--knowledge-muted, #64748B);
}
.product-page-desktop-footer .footer-payment-icons,
.knowledge-page-desktop-footer .footer-payment-icons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    width: 100%;
}
.product-page-desktop-footer .footer-payment-icons img,
.knowledge-page-desktop-footer .footer-payment-icons img {
    width: 100%;
    height: 28px;
    object-fit: contain;
    padding: 3px 4px;
    background: rgba(248, 250, 252, .95);
    border-radius: 6px;
    box-sizing: border-box;
}
/* 链接列：2 列网格，44px 触控高度 */
.product-page-desktop-footer .footer-col-links,
.knowledge-page-desktop-footer .footer-col-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 16px;
}
.product-page-desktop-footer .footer-col-links h3,
.knowledge-page-desktop-footer .footer-col-links h3 {
    grid-column: 1 / -1;
}
.product-page-desktop-footer .footer-col-links a,
.product-page-desktop-footer .footer-col-links button,
.knowledge-page-desktop-footer .footer-col-links a,
.knowledge-page-desktop-footer .footer-col-links button {
    text-align: left;
    text-decoration: none;
    color: var(--product-muted, #94A3B8);
    font-size: 14px;
    background: none;
    border: 0;
    padding: 12px 0;
    min-height: 44px;
    box-sizing: border-box;
    cursor: pointer;
    display: flex;
    align-items: center;
}
.knowledge-page-desktop-footer .footer-col-links a,
.knowledge-page-desktop-footer .footer-col-links button {
    color: var(--knowledge-muted, #94A3B8);
}
.product-page-desktop-footer .footer-col-links a:hover,
.product-page-desktop-footer .footer-col-links button:hover {
    color: var(--product-green, #00D77A);
}
.knowledge-page-desktop-footer .footer-col-links a:hover,
.knowledge-page-desktop-footer .footer-col-links button:hover {
    color: var(--knowledge-green, #00D77A);
}
/* 联系信息 */
.product-page-desktop-footer .footer-contact-info,
.knowledge-page-desktop-footer .footer-contact-info {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.product-page-desktop-footer .footer-contact-item,
.knowledge-page-desktop-footer .footer-contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--product-muted, #94A3B8);
    text-decoration: none;
    font-size: 13px;
    line-height: 1.4;
}
.knowledge-page-desktop-footer .footer-contact-item {
    color: var(--knowledge-muted, #94A3B8);
}
.product-page-desktop-footer .footer-contact-item svg,
.knowledge-page-desktop-footer .footer-contact-item svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    color: var(--product-green, #00D77A);
}
.knowledge-page-desktop-footer .footer-contact-item svg {
    color: var(--knowledge-green, #00D77A);
}
/* 社交媒体图标区 */
.product-page-desktop-footer .footer-social,
.knowledge-page-desktop-footer .footer-social {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 16px;
}
.product-page-desktop-footer .footer-social a,
.knowledge-page-desktop-footer .footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .95);
    transition: transform .2s, box-shadow .2s;
}
.product-page-desktop-footer .footer-social a:hover,
.knowledge-page-desktop-footer .footer-social a:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, .2);
}
.product-page-desktop-footer .footer-social img,
.knowledge-page-desktop-footer .footer-social img {
    width: 18px;
    height: 18px;
    object-fit: contain;
}
/* 法律链接：底部弱化，左对齐，竖线分隔 */
.product-page-desktop-footer .footer-col-legal,
.knowledge-page-desktop-footer .footer-col-legal {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, .08);
}
.knowledge-page-desktop-footer .footer-col-legal {
    border-top-color: rgba(255, 255, 255, .08);
}
.product-page-desktop-footer .footer-col-legal h3,
.knowledge-page-desktop-footer .footer-col-legal h3 {
    display: none;
}
.product-page-desktop-footer .footer-col-legal a,
.knowledge-page-desktop-footer .footer-col-legal a {
    color: var(--product-muted, #64748B);
    text-decoration: none;
    font-size: 12px;
    padding: 4px 0;
    position: relative;
}
.knowledge-page-desktop-footer .footer-col-legal a {
    color: var(--knowledge-muted, #64748B);
}
.product-page-desktop-footer .footer-col-legal a + a,
.knowledge-page-desktop-footer .footer-col-legal a + a {
    margin-left: 12px;
    padding-left: 12px;
}
.product-page-desktop-footer .footer-col-legal a + a::before,
.knowledge-page-desktop-footer .footer-col-legal a + a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 12px;
    background: rgba(255, 255, 255, .15);
}
.product-page-desktop-footer .footer-col-legal a:hover {
    color: var(--product-green, #00D77A);
}
.knowledge-page-desktop-footer .footer-col-legal a:hover {
    color: var(--knowledge-green, #00D77A);
}
/* 版权信息：左对齐，小字号 */
.product-page-desktop-footer .footer-copyright,
.knowledge-page-desktop-footer .footer-copyright {
    margin-top: 16px;
    text-align: left;
    color: var(--product-muted, #64748B);
    font-size: 11px;
}
.knowledge-page-desktop-footer .footer-copyright {
    color: var(--knowledge-muted, #64748B);
}

@media (min-width: 960px) {
    .product-page-desktop-nav { display: none; }
    .product-page-desktop-footer,
    .knowledge-page-desktop-footer {
        margin-top: 0;
        padding: 0;
        background: transparent;
        border-top: 0;
    }
    .product-page-shell { width: min(100%, 1360px); max-width: 1360px; margin: 0 auto; padding: 0 clamp(32px, 4vw, 56px) 48px; }
    .product-browser-detail { scroll-margin-top: 60px; }
    .product-page-language-switcher { flex: 0 0 auto; margin-left: 0; }
    .product-page-desktop-footer a:focus-visible {
        outline: 2px solid var(--product-green);
        outline-offset: 3px;
    }
    .product-page-desktop-footer {
        display: block;
        margin-top: 72px;
        padding: calc(22px + var(--product-footer-purchase-clearance, 0px)) 0 22px;
    }
    .product-page-desktop-footer::before {
        display: block;
        margin-bottom: 22px;
        border-top: 1px solid rgba(184, 196, 209, .12);
        content: '';
    }
    .product-page-desktop-footer-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 24px;
        color: var(--product-muted);
        font-size: 13px;
    }
    .product-page-desktop-footer-brand strong {
        color: var(--product-text);
        font-size: 17px;
        letter-spacing: -.02em;
    }
    .product-page-desktop-footer-links {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }
    .product-page-desktop-footer-links a { color: var(--product-muted); }
    .product-page-desktop-footer-links a:hover,
    .product-page-desktop-footer-links a.is-active { color: var(--product-text); font-weight: 700; }
    .product-page-desktop-footer small { flex: 0 0 auto; color: var(--product-muted); white-space: nowrap; }
    .seo-product-page .product-page-header { display: none !important; }
}

/* 页脚四列结构：品牌+支付方式 | 快速链接 | 联系方式 | 法律声明，底部居中版权（知识/分类页独立副本） */
@media (min-width: 960px) {
    footer .footer-chrome-inner {
        display: block;
    }
    .footer-columns {
        display: flex;
        flex-wrap: wrap;
        align-items: flex-start;
        justify-content: space-between;
        gap: clamp(28px, 3vw, 48px);
    }
    .footer-col { min-width: 0; }
    .footer-col h3 {
        margin: 0 0 12px;
        color: var(--product-text, #F8FAFC);
        font-size: 14px;
        font-weight: 600;
    }
    /* 列取自然内容宽 + space-between 均布：与 index.css 同步，短内容列
       不再用 flex-grow 撑出右侧空白，法律声明列文字抵达容器右缘。 */
    .footer-col-brand { flex: 0 1 340px; }
    .footer-col-links { flex: 0 1 auto; }
    .footer-col-contact { flex: 0 1 auto; }
    .footer-col-legal { flex: 0 1 auto; }

    .footer-columns .footer-col-brand > div {
        display: block;
    }
    .footer-col-brand strong {
        display: block;
        font-size: 17px;
        letter-spacing: -.02em;
    }
    .footer-col-brand > div > span {
        display: block;
        margin-top: 5px;
    }

    .footer-columns .footer-col-links {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    .footer-columns .footer-col-links a,
    .footer-columns .footer-col-links button {
        text-align: left;
        text-decoration: none;
    }

    .footer-col-legal {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    .footer-col-legal a {
        color: inherit;
        text-decoration: none;
    }
    .footer-col-legal a:hover {
        color: var(--accent-green, #00FF88);
    }

    .footer-contact-info {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    .footer-contact-item {
        display: inline-flex;
        align-items: flex-start;
        gap: 8px;
        font-size: 13px;
        color: inherit;
        text-decoration: none;
        line-height: 1.5;
    }
    a.footer-contact-item:hover {
        color: var(--accent-green, #00FF88);
    }
    .footer-contact-item svg {
        width: 15px;
        height: 15px;
        fill: currentColor;
        flex-shrink: 0;
        margin-top: 2px;
        opacity: .85;
    }

    .footer-payment-methods {
        margin-top: 18px;
        display: block;
    }
    .footer-payment-label {
        display: block;
        margin-bottom: 10px;
        font-size: 13px;
        color: var(--product-muted, #AAB8C7);
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: .05em;
    }
    .footer-payment-icons {
        display: flex;
        align-items: center;
        justify-content: flex-start;
        gap: 10px;
        flex-wrap: wrap;
    }
    .footer-payment-icons img {
        width: 48px;
        height: 30px;
        object-fit: contain;
        padding: 3px 5px;
        background: #F8FAFC;
        border-radius: 6px;
        opacity: 1;
        transition: transform .2s, box-shadow .2s;
    }
    .footer-payment-icons img:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, .15);
    }

    .footer-copyright {
        margin-top: 26px;
        padding-top: 18px;
        border-top: 1px solid rgba(184, 196, 209, .12);
        text-align: center;
    }

    /* === 覆盖 product/knowledge-page-desktop-footer 移动端样式，确保桌面端正确显示 === */
    .product-page-desktop-footer .footer-columns,
    .knowledge-page-desktop-footer .footer-columns {
        display: flex;
        flex-direction: row;
        flex-wrap: wrap;
        gap: clamp(28px, 3vw, 48px);
    }
    .product-page-desktop-footer .footer-col h3,
    .knowledge-page-desktop-footer .footer-col h3 {
        margin: 0 0 12px;
        font-size: 14px;
    }
    .product-page-desktop-footer .footer-col-brand,
    .knowledge-page-desktop-footer .footer-col-brand {
        text-align: left;
        padding-bottom: 0;
        border-bottom: 0;
        flex: 0 1 340px;
    }
    .product-page-desktop-footer .footer-col-brand > div,
    .knowledge-page-desktop-footer .footer-col-brand > div {
        align-items: flex-start;
        display: block;
    }
    .product-page-desktop-footer .footer-col-brand strong,
    .knowledge-page-desktop-footer .footer-col-brand strong {
        font-size: 17px;
        font-weight: 600;
    }
    .product-page-desktop-footer .footer-col-brand span,
    .knowledge-page-desktop-footer .footer-col-brand span {
        display: block;
        margin-top: 5px;
        font-size: inherit;
        color: inherit;
    }
    .product-page-desktop-footer .footer-payment-methods,
    .knowledge-page-desktop-footer .footer-payment-methods {
        margin-top: 18px;
        display: block;
        align-items: flex-start;
    }
    .product-page-desktop-footer .footer-payment-label,
    .knowledge-page-desktop-footer .footer-payment-label {
        margin-bottom: 10px;
        font-size: 13px;
        color: var(--product-muted, #AAB8C7);
        font-weight: 600;
        letter-spacing: .05em;
    }
    .knowledge-page-desktop-footer .footer-payment-label {
        color: var(--knowledge-muted, #AAB8C7);
    }
    .product-page-desktop-footer .footer-payment-icons,
    .knowledge-page-desktop-footer .footer-payment-icons {
        display: flex;
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        gap: 10px;
        flex-wrap: wrap;
        width: auto;
    }
    .product-page-desktop-footer .footer-payment-icons img,
    .knowledge-page-desktop-footer .footer-payment-icons img {
        width: 48px;
        height: 30px;
        padding: 3px 5px;
        background: #F8FAFC;
        border-radius: 6px;
        opacity: 1;
        transition: transform .2s, box-shadow .2s;
    }
    .product-page-desktop-footer .footer-payment-icons img:hover,
    .knowledge-page-desktop-footer .footer-payment-icons img:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, .15);
    }
    .product-page-desktop-footer .footer-col-links,
    .knowledge-page-desktop-footer .footer-col-links {
        display: flex;
        flex-direction: column;
        gap: 10px;
        flex: 0 1 auto;
    }
    .product-page-desktop-footer .footer-col-links h3,
    .knowledge-page-desktop-footer .footer-col-links h3 {
        grid-column: auto;
    }
    .product-page-desktop-footer .footer-col-links a,
    .product-page-desktop-footer .footer-col-links button,
    .knowledge-page-desktop-footer .footer-col-links a,
    .knowledge-page-desktop-footer .footer-col-links button {
        padding: 0;
        min-height: auto;
        font-size: inherit;
        display: inline;
    }
    .product-page-desktop-footer .footer-contact-info,
    .knowledge-page-desktop-footer .footer-contact-info {
        gap: 10px;
    }
    .product-page-desktop-footer .footer-contact-item,
    .knowledge-page-desktop-footer .footer-contact-item {
        display: inline-flex;
        align-items: flex-start;
        gap: 8px;
        font-size: 13px;
        line-height: 1.5;
    }
    .product-page-desktop-footer .footer-contact-item svg,
    .knowledge-page-desktop-footer .footer-contact-item svg {
        width: 15px;
        height: 15px;
        margin-top: 2px;
    }
    .product-page-desktop-footer .footer-social,
    .knowledge-page-desktop-footer .footer-social {
        margin-top: 12px;
        gap: 8px;
    }
    .product-page-desktop-footer .footer-social a,
    .knowledge-page-desktop-footer .footer-social a {
        width: 32px;
        height: 32px;
        background: rgba(255, 255, 255, .1);
    }
    .product-page-desktop-footer .footer-social img,
    .knowledge-page-desktop-footer .footer-social img {
        width: 16px;
        height: 16px;
    }
    .product-page-desktop-footer .footer-col-legal,
    .knowledge-page-desktop-footer .footer-col-legal {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        padding-top: 0;
        border-top: 0;
        flex: 0 1 auto;
    }
    .product-page-desktop-footer .footer-col-legal h3,
    .knowledge-page-desktop-footer .footer-col-legal h3 {
        display: block;
    }
    .product-page-desktop-footer .footer-col-legal a,
    .knowledge-page-desktop-footer .footer-col-legal a {
        font-size: inherit;
        color: inherit;
        padding: 0;
        position: static;
    }
    .product-page-desktop-footer .footer-col-legal a + a,
    .knowledge-page-desktop-footer .footer-col-legal a + a {
        margin-left: 0;
        padding-left: 0;
    }
    .product-page-desktop-footer .footer-col-legal a + a::before,
    .knowledge-page-desktop-footer .footer-col-legal a + a::before {
        display: none;
    }
    .product-page-desktop-footer .footer-copyright,
    .knowledge-page-desktop-footer .footer-copyright {
        margin-top: 26px;
        padding-top: 18px;
        border-top: 1px solid rgba(184, 196, 209, .12);
        text-align: center;
        font-size: inherit;
    }
}

/* Telegram mini app 中桌面端导航/页脚隐藏（移动端统一页头正常显示） */
@media (min-width: 960px) {
    body.seo-product-page[data-telegram-runtime="mini_app"] .product-page-desktop-nav,
    body.seo-product-page[data-telegram-runtime="mini_app"] .product-page-desktop-footer { display: none !important; }
}

/* 桌面端采用独立的商品工作台：左侧浏览图片，右侧集中阅读信息与完成购买决策。 */
@media (min-width: 960px) {
    .product-browser-detail { overflow: visible; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
    .product-page-header { position: static; margin-bottom: 24px; pointer-events: auto; }
    .product-detail-page { display: grid; grid-template-columns: minmax(440px, .9fr) minmax(420px, 1.1fr); column-gap: clamp(40px, 5vw, 72px); row-gap: 56px; align-items: start; }
    .fullscreen-modal-back { width: auto; height: 42px; padding: 0 16px; gap: 8px; border-radius: 10px; font-size: 14px; font-weight: 700; }
    .fullscreen-modal-back::after { content: '返回商城'; }
    .fullscreen-modal-close { display: none; }
    .product-detail-visual { position: relative; grid-column: 1; grid-row: 1 / span 2; align-self: start; min-width: 0; padding: 0; background: transparent; }
    .product-visual-gallery { padding: 28px; border: 1px solid var(--product-border); border-radius: 24px; background: linear-gradient(145deg, rgba(30, 58, 95, .5), rgba(13, 27, 42, .65)); }
    .product-visual-gallery.desktop-gallery-fixed { position: fixed; top: 60px; left: var(--desktop-gallery-left); z-index: 20; width: var(--desktop-gallery-width); }
    .product-visual-gallery.desktop-gallery-compact { padding: 16px; }
    .product-visual-gallery.desktop-gallery-compact .product-detail-carousel { height: var(--desktop-compact-carousel-height, min(25vh, 260px)); aspect-ratio: auto; }
    .product-visual-gallery.desktop-gallery-compact .product-page-main-image { height: 100%; aspect-ratio: auto; }
    .product-visual-gallery.desktop-gallery-compact .product-detail-thumbnails { display: flex; grid-template-columns: none; gap: 8px; margin-top: 10px; overflow-x: auto; justify-content: flex-start; padding-bottom: 2px; scrollbar-width: none; }
    .product-visual-gallery.desktop-gallery-compact .product-detail-thumbnails::-webkit-scrollbar { display: none; }
    .product-visual-gallery.desktop-gallery-compact .product-detail-thumbnail { flex: 0 0 56px; width: 56px; height: 56px; aspect-ratio: auto; }
    .product-detail-decision-slot { overflow-anchor: none; }
    /* 桌面端决策区：统一卡片载体，非固定态与固定态共用底色/边框/圆角 */
    .seo-product-page .product-detail-decision {
        padding: 28px;
        border: 1px solid var(--product-border);
        border-radius: 18px;
        background: var(--product-surface-raised);
    }
    .product-detail-decision.desktop-decision-fixed {
        position: fixed;
        top: var(--desktop-decision-top);
        left: var(--desktop-decision-left);
        z-index: 19;
        box-sizing: border-box;
        width: var(--desktop-decision-width);
        max-height: min(calc(100vh - var(--desktop-decision-top) - 32px), var(--desktop-decision-max-height, 100vh));
        padding: 16px 18px 18px;
        overflow-y: auto;
        overscroll-behavior: contain;
        scrollbar-gutter: stable;
        box-shadow: 0 18px 42px rgba(0, 0, 0, .28);
    }
    .product-detail-decision.desktop-decision-fixed .eyebrow,
    .product-detail-decision.desktop-decision-fixed .product-detail-title { display: none; }
    .product-detail-decision.desktop-decision-fixed .product-detail-price { margin-bottom: 8px; }
    .product-detail-decision.desktop-decision-fixed .product-detail-price #product-current-price { font-size: clamp(28px, 2vw, 34px); }
    .product-detail-decision.desktop-decision-fixed .product-detail-meta { margin-bottom: 12px; padding-bottom: 10px; }
    .product-detail-decision.desktop-decision-fixed .product-page-purchase-bar.has-selectable-specs { gap: 10px; }
    .product-detail-decision.desktop-decision-fixed .product-page-desktop-specs { gap: 10px; padding-top: 12px; }
    .product-detail-decision.desktop-decision-fixed .product-page-desktop-specs > header { padding-bottom: 8px; }
    .product-detail-decision.desktop-decision-fixed .product-page-desktop-specs .product-page-specs { gap: 8px; }
    .product-detail-decision.desktop-decision-fixed .product-page-desktop-specs .product-page-spec-group { grid-template-columns: 74px minmax(0, 1fr); gap: 8px; }
    .product-detail-decision.desktop-decision-fixed .product-page-desktop-specs .product-page-spec-group > strong { padding-top: 7px; font-size: 13px; }
    .product-detail-decision.desktop-decision-fixed .product-page-desktop-specs .spec-option-tag { min-height: 34px; padding: 6px 10px; font-size: 13px; }
    .product-detail-decision.desktop-decision-fixed .product-page-selection-row { margin-top: -2px; }
    /* 决策区压缩态：缩小内边距/字号/控件尺寸，保内容完整可操作 */
    .product-detail-decision.desktop-decision-shrunk { padding: 10px 14px 12px; }
    .product-detail-decision.desktop-decision-shrunk .product-detail-price { margin-bottom: 4px; }
    .product-detail-decision.desktop-decision-shrunk .product-detail-price #product-current-price { font-size: 22px; }
    .product-detail-decision.desktop-decision-shrunk .product-detail-price .product-price-status { min-height: 20px; padding: 2px 7px; font-size: 11px; }
    .product-detail-decision.desktop-decision-shrunk .product-detail-meta { margin-bottom: 6px; padding-bottom: 6px; }
    .product-detail-decision.desktop-decision-shrunk .product-page-purchase-bar.has-selectable-specs { gap: 6px; }
    .product-detail-decision.desktop-decision-shrunk .product-page-desktop-specs { gap: 6px; padding-top: 8px; }
    .product-detail-decision.desktop-decision-shrunk .product-page-desktop-specs > header { padding-bottom: 4px; }
    .product-detail-decision.desktop-decision-shrunk .product-page-desktop-specs > header span { font-size: 12px; }
    .product-detail-decision.desktop-decision-shrunk .product-page-desktop-specs > header strong { font-size: 13px; }
    .product-detail-decision.desktop-decision-shrunk .product-page-desktop-specs .product-page-specs { gap: 6px; }
    .product-detail-decision.desktop-decision-shrunk .product-page-desktop-specs .product-page-spec-group { grid-template-columns: 64px minmax(0, 1fr); gap: 6px; }
    .product-detail-decision.desktop-decision-shrunk .product-page-desktop-specs .product-page-spec-group > strong { padding-top: 5px; font-size: 12px; }
    .product-detail-decision.desktop-decision-shrunk .product-page-desktop-specs .spec-option-tag { min-height: 28px; padding: 3px 8px; font-size: 12px; }
    .product-detail-decision.desktop-decision-shrunk .product-page-selection-row { margin-top: -4px; }
    .product-detail-decision.desktop-decision-shrunk .product-page-quantity-control { grid-template-columns: repeat(3, 30px); width: 92px; height: 38px; }
    .product-detail-decision.desktop-decision-shrunk .product-page-action-row { grid-template-columns: 44px minmax(0, 1fr) 44px; gap: 8px; }
    .product-detail-decision.desktop-decision-shrunk .product-detail-cart-btn,
    .product-detail-decision.desktop-decision-shrunk .product-detail-share-btn { width: 44px; height: 44px; }
    .product-detail-decision.desktop-decision-shrunk .product-detail-btn { min-height: 44px; }
    .product-detail-carousel { border-radius: 20px; box-shadow: 0 20px 48px rgba(0, 0, 0, .18); }
    .product-detail-thumbnails { grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 12px; margin-top: 16px; }
    .product-detail-info { grid-column: 2; grid-row: 1; min-width: 0; padding: 4px 0 0; overflow: visible; background: transparent; }
    .product-detail-title { margin-bottom: 16px; font-size: clamp(34px, 3.1vw, 44px); line-height: 1.18; }
    .product-detail-price { margin-bottom: 16px; }
    .seo-product-page .product-detail-price #product-current-price { font-size: clamp(32px, 2.5vw, 38px); font-weight: 800; line-height: 1.1; letter-spacing: -.025em; }
    .seo-product-page .product-detail-price .product-price-status { min-height: 28px; padding: 4px 10px; font-size: 12px; font-weight: 700; letter-spacing: .01em; }
    .product-detail-meta { margin-bottom: 28px; padding-bottom: 22px; }
    .seo-product-page .product-detail-desc { margin: 28px 0; font-size: 16px; line-height: 1.85; }
    .seo-product-page .product-page-purchase-bar.has-selectable-specs { gap: 18px; }
    .seo-product-page .product-page-desktop-specs { display: grid; gap: 18px; padding: 0; border: 0; border-radius: 0; background: transparent; }
    .seo-product-page .product-page-desktop-specs > header { display: flex; align-items: baseline; justify-content: space-between; gap: 18px; padding-bottom: 14px; border-bottom: 1px solid var(--product-border); }
    .seo-product-page .product-page-desktop-specs > header span { color: var(--product-muted); font-size: 14px; font-weight: 700; }
    .seo-product-page .product-page-desktop-specs > header strong { color: var(--product-green); font-size: 15px; text-align: right; }
    .seo-product-page .product-page-desktop-specs .product-page-specs { gap: 15px; margin: 0; }
    .seo-product-page .product-page-desktop-specs .product-page-spec-group { grid-template-columns: minmax(96px, 120px) minmax(0, 1fr); align-items: start; gap: 16px; }
    .seo-product-page .product-page-desktop-specs .product-page-spec-group > strong { padding-top: 11px; font-size: 14px; }
    .seo-product-page .product-page-desktop-specs .product-page-spec-options { gap: 10px; }
    .seo-product-page .product-page-desktop-specs .spec-option-tag { min-height: 42px; padding: 9px 16px; border-radius: 9px; font-size: 14px; }
    .seo-product-page .product-page-desktop-specs .spec-option-tag:hover:not(:disabled) { border-color: var(--product-green); background: rgba(0, 255, 136, .07); }
    .seo-product-page .product-page-desktop-specs .spec-option-tag:focus-visible { outline: 2px solid var(--product-green); outline-offset: 2px; }
    .seo-product-page .product-page-purchase-bar.has-selectable-specs .product-page-selection-row { justify-content: flex-end; }
    .seo-product-page .product-page-purchase-bar.has-selectable-specs .product-page-spec-trigger { display: none; }
    .seo-product-page .product-detail-footer { position: static; margin: 0; padding: 0; border: 0; border-radius: 0; background: transparent; box-shadow: none; backdrop-filter: none; -webkit-backdrop-filter: none; }
    /* 桌面端 product 主题页脚：购买决策区固定时的顶部避让 */
    .seo-product-page .site-footer--product {
        margin-top: 72px;
        padding-top: calc(32px + var(--product-footer-purchase-clearance, 0px));
    }
    .product-detail-action-row { max-width: 360px; }
    .product-detail-btn { min-height: 54px; }
    .seo-product-page .product-detail-images { margin-top: 44px; }
    .seo-product-page .product-related-section { grid-column: 2; grid-row: 2; min-width: 0; margin-top: 0; padding: 0; }
    .seo-product-page .product-related-section h2 { margin-bottom: 20px; padding: 0; font-size: 24px; }
    .seo-product-page .product-related-section .related-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 18px; padding: 0; overflow: visible; scroll-snap-type: none; }
    .seo-product-page .product-related-section .related-card { flex: initial; border-radius: 16px; }
    .seo-product-page .product-related-section .related-card h3 { margin: 13px 14px 6px; font-size: 16px; }
    .seo-product-page .product-related-section .related-card p { margin: 0 14px 14px; font-size: 15px; }
}
.product-page-mobile-top-controls { display: none; }

@media (max-width: 959px) {
    .product-page-mobile-top-controls {
        display: flex;
        box-sizing: border-box;
        width: 100%;
        min-width: 0;
        padding: 64px 12px 12px 60px;
        align-items: center;
        gap: 10px;
    }
    .product-page-mobile-category {
        display: inline-flex;
        min-width: 0;
        max-width: calc(100% - 128px);
        align-items: center;
        gap: 4px;
        padding: 7px 10px;
        overflow: hidden;
        border: 1px solid rgba(184, 196, 209, .16);
        border-radius: 999px;
        background: rgba(10, 19, 35, .78);
        color: var(--product-text);
        font-size: 12px;
        font-weight: 700;
        line-height: 1.3;
        text-overflow: ellipsis;
        white-space: nowrap;
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
    }
    .product-page-mobile-category:hover,
    .product-page-mobile-category:focus-visible {
        color: var(--product-green);
        border-color: rgba(0, 255, 136, .55);
        outline: none;
    }
    .product-page-mobile-category span { flex: 0 0 auto; font-size: 18px; line-height: .7; }
    .seo-product-page .product-detail-decision .product-category-link { display: none; }
    .product-page-mobile-language-switcher {
        flex: 0 0 auto;
        margin-left: auto;
    }
    body.seo-product-page:not([data-telegram-runtime="mini_app"]) .product-page-mobile-top-controls { display: none; }
    /* Mini App 中使用统一页头，隐藏旧的顶部控制栏 */
    body.seo-product-page[data-telegram-runtime="mini_app"] .product-page-mobile-top-controls { display: none; }
    body.seo-product-page:not([data-telegram-runtime="mini_app"]) .product-page-header {
        position: sticky;
        top: 0;
        z-index: 20;
        display: grid;
        grid-template-columns: 46px minmax(0, 1fr) 46px;
        align-items: center;
        min-height: 72px;
        padding: 12px 20px;
        border-bottom: 1px solid var(--product-border);
        background: rgba(13, 27, 42, .94);
        backdrop-filter: blur(16px);
    }
    body.seo-product-page:not([data-telegram-runtime="mini_app"]) .fullscreen-modal-back,
    body.seo-product-page:not([data-telegram-runtime="mini_app"]) .fullscreen-modal-close {
        display: grid;
        width: 42px;
        height: 42px;
        place-items: center;
        border: 1px solid var(--product-border);
        border-radius: 12px;
        background: var(--product-surface);
        color: var(--product-text);
        font-size: 28px;
        line-height: 1;
    }
    body.seo-product-page:not([data-telegram-runtime="mini_app"]) .product-page-close { justify-self: end; font-size: 24px; }
    .product-page-header-title { display: grid; min-width: 0; gap: 1px; padding: 0 14px; text-align: center; }
    .product-page-header-title span { overflow: hidden; color: var(--product-muted); font-size: 11px; letter-spacing: .06em; text-overflow: ellipsis; text-transform: uppercase; white-space: nowrap; }
    .product-page-header-title strong { overflow: hidden; color: var(--product-text); font-size: 16px; text-overflow: ellipsis; white-space: nowrap; }
    .product-page-header .fullscreen-modal-close { display: none; }
    body.seo-product-page:not([data-telegram-runtime="mini_app"]) .product-page-header .fullscreen-modal-close { display: grid; }
    .product-page-shell { padding: 0; }
    .product-browser-detail { border: 0; border-radius: 0; box-shadow: none; }
    .product-page-header { top: 12px; right: 12px; left: 12px; }
    body.seo-product-page[data-telegram-runtime="mini_app"] .product-page-header {
        top: max(92px, calc(env(safe-area-inset-top, 0px) + 72px));
        z-index: 12;
    }
    .fullscreen-modal-back,
    .fullscreen-modal-close { width: 36px; height: 36px; font-size: 20px; }
    .seo-product-page .product-browser-detail,
    .seo-product-page .product-page-mobile-top-controls,
    .seo-product-page .product-detail-page,
    .seo-product-page .product-detail-visual { background: var(--product-bg); }
    .product-detail-visual { padding-top: 0; }
    /* Telegram Mini App 中，sticky header 因 top: var(--app-top-inset) 向下偏移，
       给内容区添加上部内边距以避免 header 遮挡主图 */
    body.seo-product-page[data-telegram-runtime="mini_app"] .product-browser-detail {
        padding-top: var(--app-top-inset);
    }
    body.seo-product-page[data-telegram-runtime="mini_app"] .product-page-mobile-top-controls {
        padding-top: max(96px, calc(env(safe-area-inset-top, 0px) + 76px));
        padding-left: 12px;
    }
    .seo-product-page .product-related-section { padding: 24px 16px max(132px, calc(104px + env(safe-area-inset-bottom, 0px))); }
    .seo-product-page .product-related-section .related-grid { margin-right: -16px; padding-right: 16px; }
    .seo-product-page .product-related-section .related-card { flex-basis: 154px; }
}

/* 独立分类页：延续商品详情页的深色商城视觉，并为触屏和桌面浏览分别优化。 */
.seo-product-page .product-category-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    width: fit-content;
    padding: 5px 9px;
    margin: -5px -9px 8px;
    border: 1px solid transparent;
    border-radius: 999px;
    line-height: 1.2;
    transition: background .2s ease, border-color .2s ease, transform .2s ease;
}
.seo-product-page .product-category-link:hover {
    color: var(--product-green);
    background: rgba(0, 255, 136, .1);
    border-color: rgba(0, 255, 136, .3);
    transform: translateX(2px);
}
.seo-product-page .product-category-link:focus-visible,
.category-page-back:focus-visible,
.category-page-close:focus-visible,
.category-product-card a:focus-visible,
.category-products-back-to-mall:focus-visible {
    outline: 2px solid var(--product-green);
    outline-offset: 3px;
}

body.seo-page.seo-category-page {
    color-scheme: dark;
    --product-bg: #0d1b2a;
    --product-surface: hsl(213, 35%, 16%);
    --product-surface-raised: hsl(213, 35%, 18%);
    --product-border: #2d3e50;
    --product-text: #ffffff;
    --product-muted: #8e99a4;
    --product-green: #00ff88;
    min-height: 100vh;
    background: var(--product-bg);
    color: var(--product-text);
}
html:has(body.seo-category-page) { background: #0d1b2a; }
.seo-category-page a:hover { color: inherit; }
.category-page-shell {
    max-width: 1280px;
    padding-top: 24px;
}
.category-browser-page {
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: 24px;
    background: var(--product-bg);
    box-shadow: 0 28px 90px rgba(0, 0, 0, .42);
}
.category-page-header {
    position: sticky;
    z-index: 10;
    top: 0;
    display: grid;
    grid-template-columns: 46px minmax(0, 1fr) 46px;
    align-items: center;
    min-height: 72px;
    padding: 12px 20px;
    border-bottom: 1px solid var(--product-border);
    background: rgba(13, 27, 42, .94);
    backdrop-filter: blur(16px);
}
.category-page-back,
.category-page-close {
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    border: 1px solid var(--product-border);
    border-radius: 12px;
    background: var(--product-surface);
    color: var(--product-text);
    font-size: 28px;
    line-height: 1;
    transition: color .2s ease, border-color .2s ease, background .2s ease, transform .2s ease;
}
.category-page-close { justify-self: end; font-size: 24px; }
.category-page-back:hover,
.category-page-close:hover {
    color: var(--product-green);
    border-color: rgba(0, 255, 136, .55);
    background: var(--product-surface-raised);
    transform: translateY(-1px);
}
.category-page-header-title {
    display: grid;
    min-width: 0;
    gap: 1px;
    padding: 0 14px;
    text-align: center;
}
.category-page-header-title span {
    overflow: hidden;
    color: var(--product-muted);
    font-size: 11px;
    letter-spacing: .06em;
    text-overflow: ellipsis;
    text-transform: uppercase;
    white-space: nowrap;
}
.category-page-header-title strong {
    overflow: hidden;
    color: var(--product-text);
    font-size: 16px;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.category-page-hero {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 24px;
    min-height: 210px;
    padding: clamp(28px, 5vw, 58px);
    border-bottom: 1px solid var(--product-border);
    background:
        radial-gradient(circle at 88% 8%, rgba(0, 255, 136, .18), transparent 30%),
        linear-gradient(135deg, rgba(30, 58, 95, .45), rgba(13, 27, 42, .18));
}
.seo-category-page .eyebrow { color: var(--product-green); }
.category-page-hero h1 {
    max-width: 820px;
    margin: 0;
    color: var(--product-text);
    font-size: clamp(30px, 5vw, 48px);
    line-height: 1.12;
    letter-spacing: -.035em;
}
.category-page-description {
    max-width: 680px;
    margin: 14px 0 0;
    color: var(--product-muted);
    font-size: 15px;
    line-height: 1.7;
}
.category-page-count {
    flex: 0 0 auto;
    padding: 8px 12px;
    border: 1px solid rgba(0, 255, 136, .35);
    border-radius: 999px;
    color: var(--product-green);
    background: rgba(0, 255, 136, .08);
    font-size: 13px;
    font-weight: 800;
    white-space: nowrap;
}
.category-products-section { padding: clamp(22px, 4vw, 48px); }
.category-products-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 18px;
}
.category-products-heading h2 {
    margin: 0;
    color: var(--product-text);
    font-size: clamp(20px, 2vw, 26px);
}
.category-products-back-to-mall {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--product-muted);
    font-size: 13px;
    font-weight: 700;
    transition: color .2s ease;
}
.category-products-back-to-mall:hover { color: var(--product-green); }
.category-products-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}
.category-product-card {
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--product-border);
    border-radius: 16px;
    background: var(--product-surface);
    transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.category-product-card:hover {
    border-color: rgba(0, 255, 136, .55);
    box-shadow: 0 16px 32px rgba(0, 0, 0, .26);
    transform: translateY(-4px);
}
.category-product-card a { display: block; height: 100%; }
.category-product-image-wrap {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1 / 1;
    background: var(--product-bg);
}
.category-product-image-wrap img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .35s ease;
}
.category-product-card:hover .category-product-image-wrap img { transform: scale(1.045); }
.category-product-image-placeholder {
    display: grid;
    width: 100%;
    height: 100%;
    place-items: center;
    color: var(--product-muted);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .08em;
}
.category-product-body { display: grid; gap: 8px; padding: 13px; }
.category-product-body h3 {
    display: -webkit-box;
    min-height: 2.8em;
    margin: 0;
    overflow: hidden;
    color: var(--product-text);
    font-size: 14px;
    line-height: 1.4;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}
.category-product-price {
    margin: 0;
    color: var(--product-green);
    font-size: 16px;
    font-weight: 800;
    line-height: 1.2;
}
.category-product-action {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--product-muted);
    font-size: 12px;
    font-weight: 700;
    transition: color .2s ease;
}
.category-product-card:hover .category-product-action { color: var(--product-green); }
.category-products-empty {
    grid-column: 1 / -1;
    display: grid;
    justify-items: center;
    gap: 14px;
    padding: 56px 24px;
    border: 1px dashed var(--product-border);
    border-radius: 18px;
    color: var(--product-muted);
    text-align: center;
}
.category-products-empty strong { color: var(--product-text); }
.category-products-empty a {
    padding: 9px 14px;
    border-radius: 10px;
    color: #06291a;
    background: var(--product-green);
    font-size: 13px;
    font-weight: 800;
}

@media (min-width: 640px) {
    .category-products-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
    .category-product-body { padding: 15px; }
    .category-product-body h3 { font-size: 15px; }
}
/* 分类页桌面端复用商品详情的商城工作台导航、内容间距与深色层级。 */
.category-page-language-switcher { display: none; }
.category-page-mobile-top-controls { display: none; }

@media (min-width: 960px) {
    .category-page-shell { width: min(1360px, 100%); max-width: none; padding: 22px clamp(32px, 4vw, 56px) 48px; }
    .category-browser-page { overflow: visible; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
    .category-page-header { display: none; }
    .category-page-hero {
        min-height: 250px;
        padding: clamp(36px, 5vw, 64px);
        border: 1px solid var(--product-border);
        border-radius: 24px;
        background:
            radial-gradient(circle at 88% 10%, rgba(0, 255, 136, .2), transparent 29%),
            linear-gradient(135deg, rgba(30, 58, 95, .62), rgba(13, 27, 42, .72));
        box-shadow: 0 20px 48px rgba(0, 0, 0, .18);
    }
    .category-page-hero h1 { font-size: clamp(38px, 4vw, 52px); }
    .category-page-description { max-width: 760px; font-size: 16px; }
    .category-page-count { padding: 10px 14px; font-size: 14px; }
    .category-products-section { padding: 48px 0 0; }
    .category-products-heading { margin-bottom: 22px; }
    .category-products-heading h2 { font-size: 26px; }
    .category-products-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
    .category-product-card { border-radius: 18px; }
    .category-product-body { gap: 10px; padding: 16px; }
    .category-product-body h3 { font-size: 16px; }
    .category-product-price { font-size: 18px; }
    .category-page-language-switcher {
        display: flex;
        flex: 0 0 auto;
        gap: 2px;
        margin-left: -12px;
        padding: 3px;
        border: 1px solid rgba(45, 62, 80, .8);
        border-radius: 16px;
        background: rgba(45, 62, 80, .6);
        box-shadow: 0 2px 8px rgba(0, 0, 0, .2);
    }
    .category-page-lang-btn {
        padding: 5px 12px;
        border: 0;
        border-radius: 13px;
        background: transparent;
        color: var(--product-muted);
        font: inherit;
        font-size: 11px;
        font-weight: 500;
        letter-spacing: .3px;
        cursor: pointer;
        transition: color .2s ease, background .2s ease, transform .2s ease;
    }
    .category-page-lang-btn:hover { color: var(--product-text); background: rgba(255, 255, 255, .05); }
    .category-page-lang-btn.active { color: #06291a; background: linear-gradient(135deg, var(--product-green), #00cc6a); font-weight: 700; box-shadow: 0 2px 8px rgba(0, 255, 136, .3); }
    .category-page-lang-btn:focus-visible { outline: 2px solid var(--product-green); outline-offset: 3px; }
    .seo-category-page .product-page-desktop-nav-links a:hover { color: var(--product-green); }
}

/* Telegram mini app 中桌面端导航/页脚隐藏（移动端统一页头正常显示） */
@media (min-width: 960px) {
    body.seo-category-page[data-telegram-runtime="mini_app"] .category-page-desktop-nav,
    body.seo-category-page[data-telegram-runtime="mini_app"] .category-page-desktop-footer { display: none !important; }
}

@media (min-width: 1280px) {
    .category-products-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); }
}
@media (max-width: 719px) {
    .category-page-shell {
        padding: 0;
        background:
            radial-gradient(circle at 88% 4%, rgba(0, 255, 136, .18), transparent 30%),
            linear-gradient(135deg, #1e3a5f 0%, #0d1b2a 72%);
    }
    .category-browser-page { min-height: 100vh; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
    .category-page-header { min-height: 60px; padding: 10px 14px; border-bottom: 0; background: transparent; }
    .category-page-header-title { visibility: hidden; }
    .category-page-back, .category-page-close { width: 38px; height: 38px; border-color: rgba(45, 62, 80, .72); border-radius: 11px; background: rgba(13, 27, 42, .46); }
    .category-page-mobile-top-controls { align-items: center; justify-content: space-between; gap: 12px; padding: 10px 14px 8px; background: transparent; }
    .category-page-mobile-mall { display: inline-flex; align-items: center; gap: 4px; min-height: 36px; padding: 0 12px; border: 1px solid rgba(45, 62, 80, .72); border-radius: 11px; background: rgba(13, 27, 42, .46); color: var(--product-text); font-size: 13px; font-weight: 800; }
    .category-page-mobile-language-switcher { display: flex; gap: 2px; padding: 3px; border: 1px solid rgba(45, 62, 80, .72); border-radius: 14px; background: rgba(13, 27, 42, .46); }
    .category-page-mobile-language-button { min-height: 30px; padding: 0 10px; border: 0; border-radius: 10px; background: transparent; color: var(--product-muted); font: inherit; font-size: 12px; cursor: pointer; }
    .category-page-mobile-language-button.active { background: linear-gradient(135deg, var(--product-green), #00cc6a); color: var(--product-bg); font-weight: 800; box-shadow: 0 2px 8px rgba(0, 255, 136, .3); }
    .category-page-mobile-language-button:focus-visible { outline: 2px solid var(--product-green); outline-offset: 2px; }
    .category-page-hero { display: grid; align-items: start; min-height: 0; padding: 22px 18px 30px; border-bottom: 0; background: transparent; }
    .category-page-hero h1 { font-size: 32px; }
    .category-page-description { margin-top: 10px; font-size: 14px; }
    .category-page-count { justify-self: start; margin-top: 4px; }
    .category-products-section { padding: 25px 14px 30px; border-top: 1px solid rgba(45, 62, 80, .72); background: var(--product-bg); }
}
@media (max-width: 374px) {
    .category-product-body { padding: 11px; }
    .category-product-price { font-size: 14px; }
    .category-product-action { font-size: 11px; }
}

/* 知识页面：复用商品详情页的深色工作区视觉，分别服务于分类浏览和沉浸式阅读。 */
body.seo-page.seo-knowledge-page {
    color-scheme: dark;
    --knowledge-bg: #0d1b2a;
    --knowledge-surface: hsl(213, 35%, 16%);
    --knowledge-surface-raised: hsl(213, 35%, 18%);
    --knowledge-border: #2d3e50;
    --knowledge-text: #ffffff;
    --knowledge-muted: #8e99a4;
    --knowledge-green: #00ff88;
    min-height: 100vh;
    background: var(--knowledge-bg);
    color: var(--knowledge-text);
}
html:has(body.seo-knowledge-page) { background: #0d1b2a; }
.knowledge-page-desktop-nav { display: none; }
.seo-knowledge-page a:hover { color: inherit; }
.seo-knowledge-page { overflow-x: hidden; }
.knowledge-page-shell { max-width: 1280px; padding-top: 24px; }
.knowledge-browser-page {
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: 24px;
    background: var(--knowledge-bg);
    box-shadow: 0 28px 90px rgba(0, 0, 0, .42);
}
.knowledge-page-header {
    position: sticky;
    z-index: 20;
    top: 0;
    display: grid;
    grid-template-columns: 46px minmax(0, 1fr) 46px;
    align-items: center;
    min-height: 72px;
    padding: 12px 20px;
    border-bottom: 1px solid var(--knowledge-border);
    background: rgba(13, 27, 42, .94);
    backdrop-filter: blur(16px);
}
.knowledge-page-back,
.knowledge-page-close {
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    border: 1px solid var(--knowledge-border);
    border-radius: 12px;
    background: var(--knowledge-surface);
    color: var(--knowledge-text);
    font-size: 28px;
    line-height: 1;
    transition: color .2s ease, border-color .2s ease, background .2s ease, transform .2s ease;
}
.knowledge-page-close { justify-self: end; font-size: 24px; }
.knowledge-page-back:hover,
.knowledge-page-close:hover {
    color: var(--knowledge-green);
    border-color: rgba(0, 255, 136, .55);
    background: var(--knowledge-surface-raised);
    transform: translateY(-1px);
}
.knowledge-page-header-title {
    display: grid;
    min-width: 0;
    gap: 1px;
    padding: 0 14px;
    text-align: center;
}
.knowledge-page-header-title span {
    overflow: hidden;
    color: var(--knowledge-muted);
    font-size: 11px;
    letter-spacing: .06em;
    text-overflow: ellipsis;
    text-transform: uppercase;
    white-space: nowrap;
}
.knowledge-page-header-title strong {
    overflow: hidden;
    color: var(--knowledge-text);
    font-size: 16px;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.seo-knowledge-page .eyebrow { color: var(--knowledge-green); }
.knowledge-list-hero {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 24px;
    min-height: 220px;
    padding: clamp(28px, 5vw, 58px);
    border-bottom: 1px solid var(--knowledge-border);
    background:
        radial-gradient(circle at 88% 8%, rgba(0, 255, 136, .17), transparent 30%),
        linear-gradient(135deg, rgba(30, 58, 95, .46), rgba(13, 27, 42, .18));
}
.knowledge-list-hero h1 {
    max-width: 820px;
    margin: 0;
    color: var(--knowledge-text);
    font-size: clamp(30px, 5vw, 48px);
    line-height: 1.12;
    letter-spacing: -.035em;
}
.knowledge-list-hero > div > p:last-child {
    max-width: 680px;
    margin: 14px 0 0;
    color: var(--knowledge-muted);
    font-size: 15px;
    line-height: 1.7;
}
.knowledge-list-count {
    flex: 0 0 auto;
    padding: 8px 12px;
    border: 1px solid rgba(0, 255, 136, .35);
    border-radius: 999px;
    color: var(--knowledge-green);
    background: rgba(0, 255, 136, .08);
    font-size: 13px;
    font-weight: 800;
    white-space: nowrap;
}
.knowledge-category-nav {
    position: sticky;
    z-index: 10;
    top: 72px;
    display: flex;
    gap: 9px;
    padding: 14px clamp(20px, 4vw, 48px);
    overflow-x: auto;
    border-bottom: 1px solid var(--knowledge-border);
    background: rgba(13, 27, 42, .94);
    scrollbar-width: thin;
}
.knowledge-category-nav a {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 6px;
    min-height: 34px;
    padding: 7px 10px;
    border: 1px solid var(--knowledge-border);
    border-radius: 999px;
    color: var(--knowledge-text);
    background: var(--knowledge-surface);
    font-size: 13px;
    font-weight: 700;
    transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.knowledge-category-nav a small {
    display: grid;
    min-width: 18px;
    height: 18px;
    place-items: center;
    border-radius: 50%;
    color: var(--knowledge-muted);
    background: rgba(255, 255, 255, .08);
    font-size: 10px;
}
.knowledge-category-nav a:hover {
    border-color: rgba(0, 255, 136, .55);
    color: var(--knowledge-green);
    background: rgba(0, 255, 136, .08);
}
.knowledge-category-groups { padding: clamp(22px, 4vw, 48px); }
.knowledge-category-section { scroll-margin-top: 136px; }
.knowledge-category-section + .knowledge-category-section { margin-top: clamp(38px, 6vw, 68px); }
.knowledge-category-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 18px;
}
.knowledge-category-heading .eyebrow { margin: 0 0 5px; }
.knowledge-category-heading h2 {
    margin: 0;
    color: var(--knowledge-text);
    font-size: clamp(22px, 2.4vw, 30px);
    line-height: 1.25;
}
.knowledge-category-heading > span { color: var(--knowledge-muted); font-size: 13px; font-weight: 700; }
.knowledge-card-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}
.knowledge-card-preview {
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--knowledge-border);
    border-radius: 16px;
    background: var(--knowledge-surface);
    transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.knowledge-card-preview:hover {
    border-color: rgba(0, 255, 136, .55);
    box-shadow: 0 16px 32px rgba(0, 0, 0, .26);
    transform: translateY(-4px);
}
.knowledge-card-preview a { display: block; height: 100%; }
.knowledge-card-image-wrap {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: var(--knowledge-bg);
}
.knowledge-card-image-wrap img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .35s ease;
}
.knowledge-card-preview:hover .knowledge-card-image-wrap img { transform: scale(1.045); }
.knowledge-card-image-placeholder,
.knowledge-detail-cover-placeholder {
    display: grid;
    width: 100%;
    height: 100%;
    place-items: center;
    color: var(--knowledge-muted);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .08em;
}
.knowledge-card-body { display: grid; gap: 8px; padding: 13px; }
.knowledge-card-category {
    overflow: hidden;
    color: var(--knowledge-green);
    font-size: 11px;
    font-weight: 800;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.knowledge-card-body h3 {
    display: -webkit-box;
    min-height: 2.8em;
    margin: 0;
    overflow: hidden;
    color: var(--knowledge-text);
    font-size: 14px;
    line-height: 1.4;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}
.knowledge-card-body p {
    display: -webkit-box;
    min-height: 3.9em;
    margin: 0;
    overflow: hidden;
    color: var(--knowledge-muted);
    font-size: 12px;
    line-height: 1.55;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
}
.knowledge-card-action {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--knowledge-muted);
    font-size: 12px;
    font-weight: 700;
    transition: color .2s ease;
}
.knowledge-card-preview:hover .knowledge-card-action { color: var(--knowledge-green); }
.knowledge-empty-state {
    display: grid;
    justify-items: center;
    gap: 14px;
    padding: 56px 24px;
    border: 1px dashed var(--knowledge-border);
    border-radius: 18px;
    color: var(--knowledge-muted);
    text-align: center;
}
.knowledge-empty-state strong { color: var(--knowledge-text); }
.knowledge-empty-state a {
    padding: 9px 14px;
    border-radius: 10px;
    color: #06291a;
    background: var(--knowledge-green);
    font-size: 13px;
    font-weight: 800;
}

.knowledge-detail-layout {
    display: grid;
    gap: 56px;
    min-height: 720px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}
.knowledge-detail-primary-workspace {
    display: grid;
    grid-template-columns: minmax(320px, .82fr) minmax(0, 1.18fr);
    min-height: 720px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    min-width: 0;
}
.knowledge-detail-visual {
    position: sticky;
    top: 72px;
    align-self: start;
    min-width: 0;
    padding: 42px 0 40px 42px;
    background: linear-gradient(145deg, rgba(30, 58, 95, .35), rgba(13, 27, 42, .08));
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow-x: clip;
}
.knowledge-image-gallery { width: 100%; min-width: 0; box-sizing: border-box; }
.knowledge-gallery-stage {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--knowledge-border);
    border-radius: 18px;
    background: #08131f;
    box-shadow: 0 18px 46px rgba(0, 0, 0, .22);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}
.knowledge-gallery-main {
    display: block;
    width: 100%;
    height: auto;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: zoom-in;
}
.knowledge-gallery-main img {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
    max-height: none;
    object-fit: initial;
    transition: opacity .18s ease;
}
.knowledge-gallery-arrow {
    position: absolute;
    z-index: 2;
    top: 50%;
    display: grid;
    width: 38px;
    height: 42px;
    place-items: center;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, .26);
    border-radius: 12px;
    background: rgba(6, 20, 32, .7);
    color: var(--knowledge-text);
    font-size: 32px;
    line-height: 1;
    cursor: pointer;
    opacity: 0;
    transform: translateY(-50%);
    transition: opacity .2s ease, background .2s ease, color .2s ease;
}
.knowledge-gallery-stage:hover .knowledge-gallery-arrow,
.knowledge-gallery-arrow:focus-visible { opacity: 1; }
.knowledge-gallery-arrow.previous { left: 12px; }
.knowledge-gallery-arrow.next { right: 12px; }
.knowledge-gallery-arrow:hover { color: var(--knowledge-green); background: rgba(6, 35, 28, .88); }
.knowledge-gallery-count {
    position: absolute;
    z-index: 1;
    right: 12px;
    bottom: 12px;
    padding: 5px 9px;
    border: 1px solid rgba(255, 255, 255, .16);
    border-radius: 999px;
    background: rgba(6, 20, 32, .76);
    color: var(--knowledge-text);
    font-size: 12px;
    font-weight: 800;
}
.knowledge-gallery-thumbnail-row {
    display: grid;
    grid-template-columns: 32px minmax(0, 1fr) 32px;
    align-items: center;
    gap: 8px;
    margin-top: 13px;
    min-width: 0;
    box-sizing: border-box;
}
.knowledge-gallery-thumbnails {
    display: flex;
    gap: 8px;
    min-width: 0;
    max-width: 100%;
    overflow-x: auto;
    padding: 2px;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scroll-snap-type: x proximity;
    box-sizing: border-box;
}
.knowledge-gallery-thumbnail {
    flex: 0 0 60px;
    overflow: hidden;
    aspect-ratio: 1 / 1;
    padding: 0;
    border: 1px solid var(--knowledge-border);
    border-radius: 9px;
    background: var(--knowledge-surface);
    cursor: pointer;
    opacity: .64;
    scroll-snap-align: center;
    transition: opacity .2s ease, border-color .2s ease, transform .2s ease;
}
.knowledge-gallery-thumbnail img { display: block; width: 100%; height: 100%; object-fit: cover; }
.knowledge-gallery-thumbnail:hover,
.knowledge-gallery-thumbnail.active { border-color: var(--knowledge-green); opacity: 1; transform: translateY(-1px); }
.knowledge-thumbnail-scroll-arrow {
    display: grid;
    width: 32px;
    height: 32px;
    place-items: center;
    padding: 0;
    border: 1px solid var(--knowledge-border);
    border-radius: 50%;
    background: var(--knowledge-surface);
    color: var(--knowledge-text);
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
}
.knowledge-thumbnail-scroll-arrow:hover { border-color: rgba(0, 255, 136, .6); color: var(--knowledge-green); }
.knowledge-detail-cover {
    display: grid;
    width: 100%;
    min-height: min(64vh, 630px);
    aspect-ratio: 4 / 5;
    place-items: center;
    border: 1px solid var(--knowledge-border);
    border-radius: 18px;
    background: var(--knowledge-surface);
    box-shadow: 0 18px 46px rgba(0, 0, 0, .22);
}
.knowledge-image-lightbox {
    position: fixed;
    z-index: 11000;
    inset: 0;
    display: grid;
    place-items: center;
    padding: clamp(20px, 4vw, 48px);
    isolation: isolate;
}
.knowledge-lightbox-backdrop { position: absolute; inset: 0; width: 100%; border: 0; background: rgba(0, 5, 12, .91); }
.knowledge-lightbox-content {
    position: relative;
    z-index: 1;
    display: grid;
    width: auto;
    height: auto;
    max-width: calc(100vw - 40px);
    max-height: calc(100vh - 40px);
    place-items: center;
}
.knowledge-lightbox-content img {
    display: block;
    width: auto;
    height: auto;
    max-width: calc(100vw - 40px);
    max-height: calc(100vh - 40px);
    object-fit: contain;
    object-position: center;
}
.knowledge-lightbox-close,
.knowledge-lightbox-arrow {
    position: absolute;
    z-index: 2;
    display: grid;
    place-items: center;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, .28);
    background: rgba(7, 22, 35, .76);
    color: #fff;
    cursor: pointer;
}
.knowledge-lightbox-close { top: 0; right: 0; width: 38px; height: 38px; border-radius: 50%; font-size: 25px; }
.knowledge-lightbox-arrow { top: 50%; width: 46px; height: 52px; border-radius: 13px; font-size: 38px; transform: translateY(-50%); }
.knowledge-lightbox-arrow.previous { left: 0; }
.knowledge-lightbox-arrow.next { right: 0; }
.knowledge-lightbox-count { position: absolute; right: 12px; bottom: 12px; padding: 6px 10px; border-radius: 999px; background: rgba(0, 0, 0, .58); color: #fff; font-size: 12px; font-weight: 800; }
@media (min-width: 960px) {
    .knowledge-image-lightbox { padding: 40px 72px; }
    .knowledge-lightbox-content,
    .knowledge-lightbox-content img {
        max-width: calc(100vw - 144px);
        max-height: calc(100vh - 80px);
    }
}
.knowledge-lightbox-close:hover,
.knowledge-lightbox-arrow:hover { border-color: var(--knowledge-green); color: var(--knowledge-green); }
.knowledge-lightbox-open { overflow: hidden; }
.knowledge-detail-reading {
    min-width: 0;
    padding: clamp(30px, 5vw, 62px);
    background: var(--knowledge-bg);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}
.knowledge-category-link {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    width: fit-content;
    padding: 5px 9px;
    margin: -5px -9px 10px;
    border: 1px solid transparent;
    border-radius: 999px;
    color: var(--knowledge-green);
    font-size: 13px;
    font-weight: 800;
    transition: background .2s ease, border-color .2s ease, transform .2s ease;
}
.knowledge-category-link:hover {
    border-color: rgba(0, 255, 136, .3);
    background: rgba(0, 255, 136, .1);
    transform: translateX(2px);
}
.knowledge-detail-heading h1 {
    margin: 0;
    color: var(--knowledge-text);
    font-size: clamp(28px, 3vw, 42px);
    line-height: 1.2;
    letter-spacing: -.025em;
    word-break: break-word;
    overflow-wrap: break-word;
}
.knowledge-detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 14px;
    margin: 16px 0 0;
    color: var(--knowledge-muted);
    font-size: 13px;
}
.knowledge-detail-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 9px;
    margin-top: 18px;
    padding-bottom: 22px;
    border-bottom: 1px solid var(--knowledge-border);
}
.knowledge-action-button {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    min-height: 40px;
    padding: 8px 12px;
    border: 1px solid var(--knowledge-border);
    border-radius: 11px;
    background: var(--knowledge-surface);
    color: var(--knowledge-text);
    font: inherit;
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
    transition: border-color .2s ease, background .2s ease, color .2s ease, transform .2s ease;
}
.knowledge-action-button svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.8; }
.knowledge-action-button:hover { border-color: rgba(0, 255, 136, .55); color: var(--knowledge-green); transform: translateY(-1px); }
.knowledge-action-button:disabled { cursor: wait; opacity: .62; transform: none; }
.knowledge-like-button.is-liked { border-color: rgba(0, 255, 136, .58); color: var(--knowledge-green); background: rgba(0, 255, 136, .1); }
.knowledge-like-button.is-liked svg { fill: currentColor; }
.knowledge-action-status { min-height: 1.35em; color: var(--knowledge-muted); font-size: 12px; }
.knowledge-reading-content {
    max-width: 780px;
    margin-top: 28px;
    color: var(--knowledge-text);
    font-size: 16px;
    line-height: 1.9;
}
.knowledge-reading-content p { margin: 0 0 1.3em; white-space: pre-wrap; word-break: break-word; overflow-wrap: break-word; }
.knowledge-related-heading h2 {
    margin: 0 0 16px;
    color: var(--knowledge-text);
    font-size: 21px;
}
.knowledge-related-products {
    margin-top: 42px;
    padding-top: 28px;
    border-top: 1px solid var(--knowledge-border);
}
.knowledge-related-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.knowledge-related-heading a { color: var(--knowledge-muted); font-size: 13px; font-weight: 700; }
.knowledge-related-heading a:hover { color: var(--knowledge-green); }
.knowledge-related-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}
.knowledge-related-card {
    overflow: hidden;
    border: 1px solid var(--knowledge-border);
    border-radius: 14px;
    background: var(--knowledge-surface);
    transition: border-color .2s ease, transform .2s ease;
}
.knowledge-related-card:hover { border-color: rgba(0, 255, 136, .5); transform: translateY(-2px); }
.knowledge-related-card a { display: grid; grid-template-columns: 72px minmax(0, 1fr); min-height: 72px; }
.knowledge-related-card img { width: 72px; height: 72px; object-fit: cover; }
.knowledge-related-card div { display: grid; align-content: center; gap: 5px; min-width: 0; padding: 9px 10px; }
.knowledge-related-card h3 {
    display: -webkit-box;
    margin: 0;
    overflow: hidden;
    color: var(--knowledge-text);
    font-size: 13px;
    line-height: 1.35;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}
.knowledge-related-card p { margin: 0; color: var(--knowledge-green); font-size: 13px; font-weight: 800; }

@media (min-width: 640px) {
    .knowledge-card-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
    .knowledge-card-body { padding: 15px; }
    .knowledge-card-body h3 { font-size: 15px; }
}
@media (min-width: 1100px) {
    .knowledge-card-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
    .knowledge-related-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 960px) {
    .knowledge-page-shell { width: min(1360px, 100%); max-width: none; padding: 0 clamp(32px, 4vw, 56px) 48px; }
    .knowledge-browser-page { scroll-margin-top: 60px; }
    .knowledge-page-language-switcher {
        display: flex;
        flex: 0 0 auto;
        gap: 2px;
        margin-left: -12px;
        padding: 3px;
        border: 1px solid rgba(45, 62, 80, .8);
        border-radius: 16px;
        background: rgba(45, 62, 80, .6);
        box-shadow: 0 2px 8px rgba(0, 0, 0, .2);
    }
    .knowledge-page-language-switcher .lang-btn {
        padding: 5px 12px;
        border: 0;
        border-radius: 13px;
        background: transparent;
        color: var(--knowledge-muted);
        font: inherit;
        font-size: 11px;
        font-weight: 500;
        line-height: 1.2;
        letter-spacing: .3px;
        cursor: pointer;
        transition: color .2s ease, background .2s ease, transform .2s ease;
    }
    .knowledge-page-language-switcher .lang-btn:hover { color: var(--knowledge-text); background: rgba(255, 255, 255, .05); }
    .knowledge-page-language-switcher .lang-btn:active { transform: scale(.95); }
    .knowledge-page-language-switcher .lang-btn.active { background: linear-gradient(135deg, var(--knowledge-green), #00cc6a); color: var(--knowledge-bg); font-weight: 700; box-shadow: 0 2px 8px rgba(0, 255, 136, .3); }
    .knowledge-page-desktop-footer a:focus-visible { outline: 2px solid var(--knowledge-green); outline-offset: 3px; }
    .knowledge-detail-browser-page,
    .knowledge-category-browser-page { overflow: visible; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
    .knowledge-detail-browser-page > .knowledge-page-header,
    .knowledge-category-browser-page > .knowledge-page-header { display: none; }
    .knowledge-category-page-hero { padding: clamp(34px, 5vw, 64px) 0 36px; border-bottom: 0; background: transparent; }
    .knowledge-category-page-cards { padding: 8px 0 0; }
    .knowledge-category-page-cards-heading { padding-bottom: 18px; border-bottom: 1px solid var(--knowledge-border); }
    .knowledge-category-page-cards .knowledge-card-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
    .knowledge-detail-layout { display: grid; gap: 56px; min-height: 0; }
    .knowledge-detail-primary-workspace { display: grid; grid-template-columns: minmax(440px, .9fr) minmax(420px, 1.1fr); column-gap: clamp(40px, 5vw, 72px); min-height: 0; align-items: start; }
    .knowledge-detail-visual { position: sticky; top: 60px; grid-column: 1; grid-row: 1; align-self: start; padding: 0; background: transparent; }
    .knowledge-image-gallery { padding: 28px; border: 1px solid var(--knowledge-border); border-radius: 24px; background: linear-gradient(145deg, rgba(30, 58, 95, .5), rgba(13, 27, 42, .65)); }
    .knowledge-detail-cover { min-height: 0; padding: 28px; border-radius: 24px; background: linear-gradient(145deg, rgba(30, 58, 95, .5), rgba(13, 27, 42, .65)); }
    .knowledge-detail-reading { grid-column: 2; padding: 0; background: transparent; }
    .knowledge-detail-heading { padding: clamp(26px, 3vw, 36px); border: 1px solid var(--knowledge-border); border-radius: 20px; background: var(--knowledge-surface-raised); box-shadow: 0 18px 42px rgba(0, 0, 0, .18); }
    .knowledge-detail-heading h1 { font-size: clamp(30px, 3vw, 42px); }
    .knowledge-detail-meta-likes { display: none; }
    .knowledge-detail-actions { margin-top: 20px; padding-bottom: 0; border-bottom: 0; }
    .knowledge-reading-content { max-width: none; margin-top: 30px; font-size: 16px; }
    .knowledge-related-products { margin-top: 0; padding-top: 0; border-top: 0; }
    .knowledge-related-products::before { display: block; margin-bottom: 28px; border-top: 1px solid var(--knowledge-border); content: ''; }
    .knowledge-related-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
    .knowledge-related-card { border-radius: 16px; }
    .knowledge-related-card a { display: block; min-height: 0; }
    .knowledge-related-card img { display: block; width: 100%; height: auto; aspect-ratio: 1 / 1; object-fit: contain; background: rgba(13, 27, 42, .5); }
    .knowledge-related-card div { display: grid; min-height: 100px; padding: 14px; }
    .knowledge-related-card h3 { font-size: 15px; }
    .knowledge-page-desktop-footer { display: block; margin-top: 72px; padding: 22px 0; }
    .knowledge-page-desktop-footer::before { display: block; margin-bottom: 22px; border-top: 1px solid rgba(184, 196, 209, .12); content: ''; }
    .knowledge-page-desktop-footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; color: var(--knowledge-muted); font-size: 13px; }
    .knowledge-page-desktop-footer-brand { display: flex; align-items: baseline; gap: 10px; white-space: nowrap; }
    .knowledge-page-desktop-footer-brand strong { color: var(--knowledge-text); font-size: 17px; letter-spacing: -.02em; }
    .knowledge-page-desktop-footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
    .knowledge-page-desktop-footer-links a { color: var(--knowledge-muted); }
    .knowledge-page-desktop-footer-links a:hover,
    .knowledge-page-desktop-footer-links a.is-active { color: var(--knowledge-text); font-weight: 700; }
    .knowledge-page-desktop-footer small { flex: 0 0 auto; color: var(--knowledge-muted); white-space: nowrap; }
}

.knowledge-page-mobile-top-controls { display: none; }
body.seo-knowledge-page:not([data-telegram-runtime="mini_app"]) .knowledge-category-mobile-top-controls { display: none; }
.knowledge-category-page-hero {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 24px;
    min-height: 220px;
    padding: clamp(28px, 5vw, 58px);
    border-bottom: 1px solid var(--knowledge-border);
    background:
        radial-gradient(circle at 88% 8%, rgba(0, 255, 136, .17), transparent 30%),
        linear-gradient(135deg, rgba(30, 58, 95, .46), rgba(13, 27, 42, .18));
}
.knowledge-category-page-hero h1 {
    max-width: 820px;
    margin: 0;
    color: var(--knowledge-text);
    font-size: clamp(30px, 5vw, 48px);
    line-height: 1.12;
    letter-spacing: -.035em;
}
.knowledge-category-page-hero h1 span { margin-right: 8px; }
.knowledge-category-page-hero > div > p:last-child {
    max-width: 680px;
    margin: 14px 0 0;
    color: var(--knowledge-muted);
    font-size: 15px;
    line-height: 1.7;
}
.knowledge-category-page-cards { padding: clamp(22px, 4vw, 48px); }
.knowledge-category-page-cards-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 18px;
}
.knowledge-category-page-cards-heading h2 { margin: 0; color: var(--knowledge-text); font-size: clamp(22px, 2.4vw, 30px); line-height: 1.25; }
.knowledge-category-page-cards-heading a { color: var(--knowledge-green); font-size: 13px; font-weight: 800; }

@media (max-width: 959px) {
    .knowledge-page-mobile-top-controls {
        display: flex;
        box-sizing: border-box;
        width: 100%;
        min-width: 0;
        padding: 12px 14px;
        align-items: center;
        gap: 10px;
        background: var(--knowledge-bg);
    }
    .knowledge-page-mobile-category {
        display: inline-flex;
        min-width: 0;
        max-width: calc(100% - 138px);
        align-items: center;
        gap: 4px;
        padding: 7px 10px;
        overflow: hidden;
        border: 1px solid var(--knowledge-border);
        border-radius: 999px;
        background: var(--knowledge-surface);
        color: var(--knowledge-text);
        font-size: 12px;
        font-weight: 700;
        line-height: 1.3;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    .knowledge-page-mobile-category:hover,
    .knowledge-page-mobile-category:focus-visible { color: var(--knowledge-green); border-color: rgba(0, 255, 136, .55); outline: none; }
    .knowledge-page-mobile-category span { flex: 0 0 auto; font-size: 18px; line-height: .7; }
    .knowledge-page-mobile-language-switcher {
        display: flex;
        flex: 0 0 auto;
        gap: 2px;
        margin-left: auto;
        padding: 3px;
        border: 1px solid rgba(45, 62, 80, .8);
        border-radius: 16px;
        background: rgba(45, 62, 80, .6);
        box-shadow: 0 2px 8px rgba(0, 0, 0, .2);
    }
    .knowledge-page-mobile-language-button {
        padding: 5px 10px;
        border: 0;
        border-radius: 13px;
        background: transparent;
        color: var(--knowledge-muted);
        font: inherit;
        font-size: 11px;
        font-weight: 500;
        line-height: 1.2;
        letter-spacing: .3px;
        cursor: pointer;
    }
    .knowledge-page-mobile-language-button.active { background: linear-gradient(135deg, var(--knowledge-green), #00cc6a); color: var(--knowledge-bg); font-weight: 700; box-shadow: 0 2px 8px rgba(0, 255, 136, .3); }
    .seo-knowledge-page .knowledge-detail-heading .knowledge-category-link { display: none; }
    .knowledge-category-page-hero { min-height: 0; padding: 30px 24px; }
    .knowledge-category-page-cards { padding: 30px 24px 34px; }
    .knowledge-detail-layout { min-height: 0; background: var(--knowledge-bg); grid-template-columns: minmax(0, 1fr); }
    .knowledge-detail-primary-workspace { grid-template-columns: minmax(0, 1fr); min-height: 0; background: var(--knowledge-bg); min-width: 0; }
    .knowledge-detail-visual { position: static; padding: 22px 22px 0; background: var(--knowledge-bg); }
    .knowledge-detail-cover { min-height: 0; aspect-ratio: 16 / 10; }
    .knowledge-detail-reading { padding: 30px 24px 34px; background: var(--knowledge-bg); }
}
@media (max-width: 719px) {
    .knowledge-page-shell { padding: 0; }
    .knowledge-page-shell:has(.knowledge-category-browser-page) {
        background:
            radial-gradient(circle at 88% 4%, rgba(0, 255, 136, .18), transparent 30%),
            linear-gradient(135deg, #1e3a5f 0%, #0d1b2a 72%);
    }
    .knowledge-browser-page { min-height: 100vh; border: 0; border-radius: 0; box-shadow: none; }
    .knowledge-category-browser-page { background: transparent; }
    .knowledge-page-header { min-height: 64px; padding: 10px 14px; }
    .knowledge-category-browser-page .knowledge-page-header { border-bottom: 0; background: transparent; }
    .knowledge-category-browser-page .knowledge-page-header-title { visibility: hidden; }
    .knowledge-page-back, .knowledge-page-close { width: 38px; height: 38px; border: 1px solid rgba(45, 62, 80, .72); border-radius: 11px; background: rgba(13, 27, 42, .46); }
    .knowledge-list-hero { display: grid; align-items: start; min-height: 0; padding: 28px 18px 22px; }
    .knowledge-category-mobile-top-controls { padding: 10px 14px 8px; background: transparent; }
    .knowledge-category-page-hero { display: grid; align-items: start; min-height: 0; padding: 12px 18px 28px; border-bottom: 0; background: transparent; }
    .knowledge-list-hero h1, .knowledge-category-page-hero h1 { font-size: 32px; }
    .knowledge-list-hero > div > p:last-child { margin-top: 10px; font-size: 14px; }
    .knowledge-list-count { justify-self: start; margin-top: 4px; }
    .knowledge-category-nav { top: 64px; padding: 11px 14px; }
    .knowledge-category-groups { padding: 20px 14px 30px; }
    .knowledge-category-page-cards { padding: 25px 14px 30px; border-top: 1px solid rgba(45, 62, 80, .72); background: var(--knowledge-bg); }
    .knowledge-category-section { scroll-margin-top: 122px; }
    .knowledge-detail-visual { padding: 18px 14px 0; background: var(--knowledge-bg); }
    .knowledge-detail-reading { padding: 28px 18px 32px; background: var(--knowledge-bg); }
    .knowledge-detail-heading h1 { font-size: 24px; word-break: break-word; overflow-wrap: break-word; }
    .knowledge-detail-actions { gap: 8px; }
    .knowledge-action-button { font-size: 12px; padding: 8px 10px; min-height: 36px; }
    .knowledge-gallery-stage { border-radius: 16px; }
    .knowledge-detail-cover { border-radius: 16px; }
    .knowledge-gallery-arrow { width: 36px; height: 40px; opacity: 1; }
    .knowledge-gallery-arrow.previous { left: 8px; }
    .knowledge-gallery-arrow.next { right: 8px; }
    .product-detail-gallery-arrow { width: 36px; height: 40px; opacity: 1; }
    .product-detail-gallery-arrow.previous { left: 8px; }
    .product-detail-gallery-arrow.next { right: 8px; }
    .knowledge-gallery-thumbnail-row { grid-template-columns: 30px minmax(0, 1fr) 30px; gap: 6px; margin-top: 10px; }
    .knowledge-gallery-thumbnail { flex-basis: 54px; }
    .knowledge-thumbnail-scroll-arrow { width: 30px; height: 30px; }
    .knowledge-lightbox { padding: 12px; }
    .knowledge-lightbox-content { width: 100%; height: 78vh; }
    .knowledge-lightbox-arrow { width: 40px; height: 46px; font-size: 32px; }
    .knowledge-reading-content { font-size: 15px; line-height: 1.82; }
    .knowledge-related-grid { display: flex; overflow-x: auto; padding-bottom: 4px; scroll-snap-type: x proximity; }
    .knowledge-related-card { flex: 0 0 min(270px, 78vw); scroll-snap-align: start; }
}
@media (max-width: 374px) {
    .knowledge-card-body { padding: 11px; }
    .knowledge-card-body h3 { font-size: 13px; }
    .knowledge-card-body p { font-size: 11px; }
}

/* Telegram Mini App：知识与分类独立页使用原生返回控件，页面内容避开顶部关闭/更多区域和底部安全区。 */
@media (max-width: 719px) {
    html.tg-mini-app body.seo-knowledge-page[data-telegram-runtime="mini_app"],
    html.tg-mini-app body.seo-category-page[data-telegram-runtime="mini_app"] {
        min-height: var(--tg-viewport-stable-height, 100vh);
        touch-action: pan-x pan-y;
    }
    html.tg-mini-app body.seo-knowledge-page[data-telegram-runtime="mini_app"] .knowledge-page-shell,
    html.tg-mini-app body.seo-category-page[data-telegram-runtime="mini_app"] .category-page-shell {
        min-height: var(--tg-viewport-stable-height, 100vh);
        padding-top: var(--tg-top-controls-inset, 84px);
        padding-bottom: max(20px, calc(var(--tg-content-safe-area-bottom, 0px) + 12px));
    }
    html.tg-mini-app body.seo-knowledge-page[data-telegram-runtime="mini_app"] .knowledge-browser-page,
    html.tg-mini-app body.seo-category-page[data-telegram-runtime="mini_app"] .category-browser-page {
        min-height: calc(var(--tg-viewport-stable-height, 100vh) - var(--tg-top-controls-inset, 84px));
    }
    html.tg-mini-app body.seo-knowledge-page[data-telegram-runtime="mini_app"] .knowledge-page-header,
    html.tg-mini-app body.seo-category-page[data-telegram-runtime="mini_app"] .category-page-header {
        display: none;
    }
    html.tg-mini-app body.seo-knowledge-page[data-telegram-runtime="mini_app"] .knowledge-category-mobile-top-controls,
    html.tg-mini-app body.seo-category-page[data-telegram-runtime="mini_app"] .category-page-mobile-top-controls {
        display: none; /* 统一页头已提供导航和语言切换，隐藏旧的顶部控制栏 */
    }
    html.tg-mini-app body.seo-knowledge-page[data-telegram-runtime="mini_app"] .knowledge-category-nav {
        top: var(--tg-top-controls-inset, 84px);
    }
    html.tg-mini-app body.seo-knowledge-page[data-telegram-runtime="mini_app"] .knowledge-category-section {
        scroll-margin-top: calc(var(--tg-top-controls-inset, 84px) + 58px);
    }
    html.tg-mini-app body.seo-knowledge-page[data-telegram-runtime="mini_app"] .knowledge-related-products,
    html.tg-mini-app body.seo-category-page[data-telegram-runtime="mini_app"] .category-products-section {
        padding-bottom: max(28px, calc(var(--tg-content-safe-area-bottom, 0px) + 20px));
    }
}

/* SEO 独立详情页也会使用 SharePanel；首页样式未加载时必须提供同一套可见的分享覆盖层。 */
.seo-page .share-overlay {
    position: fixed;
    z-index: 12000;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(0, 5, 12, .72);
    opacity: 0;
    transition: opacity .2s ease;
}
.seo-page .share-overlay[hidden] { display: none; }
.seo-page .share-overlay.is-visible { opacity: 1; }
.seo-page .share-panel {
    width: min(100%, 390px);
    padding: 22px;
    border: 1px solid var(--knowledge-border, var(--product-border, #2d3e50));
    border-radius: 18px;
    background: var(--knowledge-surface, var(--product-surface, #162738));
    color: var(--knowledge-text, var(--product-text, #fff));
    box-shadow: 0 22px 60px rgba(0, 0, 0, .42);
}
.seo-page .share-panel-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.seo-page .share-panel-header h3 { margin: 0; font-size: 18px; font-weight: 800; }
.seo-page .share-close {
    display: grid;
    width: 34px;
    height: 34px;
    place-items: center;
    padding: 0;
    border: 1px solid var(--knowledge-border, var(--product-border, #2d3e50));
    border-radius: 50%;
    background: transparent;
    color: var(--knowledge-muted, var(--product-muted, #8e99a4));
    font: inherit;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
}
.seo-page .share-close:hover,
.seo-page .share-close:focus-visible { border-color: var(--knowledge-green, var(--product-green, #00ff88)); color: var(--knowledge-green, var(--product-green, #00ff88)); outline: none; }
.seo-page .share-platforms { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.seo-page .share-platform-btn {
    display: flex;
    min-height: 88px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 5px;
    border: 1px solid var(--knowledge-border, var(--product-border, #2d3e50));
    border-radius: 12px;
    background: var(--knowledge-bg, var(--product-bg, #0d1b2a));
    color: var(--knowledge-text, var(--product-text, #fff));
    font: inherit;
    cursor: pointer;
    transition: border-color .2s ease, background .2s ease, transform .2s ease;
}
.seo-page .share-platform-btn:hover,
.seo-page .share-platform-btn:focus-visible { border-color: var(--platform-color); background: rgba(255, 255, 255, .08); outline: none; transform: translateY(-2px); }
.seo-page .share-icon { display: inline-flex; width: 38px; height: 38px; align-items: center; justify-content: center; border-radius: 50%; background: var(--platform-color); color: #fff; font-size: 19px; font-weight: 800; }
.seo-page .share-icon.share-icon-image { padding: 6px; background: #fff; }
.seo-page .share-platform-btn[data-platform="x"] .share-icon.share-icon-image { background: var(--platform-color); }
.seo-page .share-icon img { display: block; width: 22px; height: 22px; object-fit: contain; }
.seo-page .share-name { font-size: 12px; line-height: 1.2; }
.seo-page .share-qr-code { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--knowledge-border, var(--product-border, #2d3e50)); text-align: center; }
.seo-page .share-qr-code p { margin: 0 0 12px; color: var(--knowledge-muted, var(--product-muted, #8e99a4)); font-size: 13px; }
.seo-page .share-qr-code img { display: block; max-width: 100%; margin: 0 auto; border-radius: 10px; background: #fff; }
@media (max-width: 360px) {
    .seo-page .share-panel { padding: 18px; }
    .seo-page .share-platforms { gap: 8px; }
    .seo-page .share-platform-btn { min-height: 80px; }
}

/* 多 SKU 商品：首次进入详情页时以环形动效提示可选择规格。 */
.seo-product-page .spec-option-tag.spec-option-tag--guided,
.seo-product-page .product-page-spec-trigger.product-page-spec-trigger--guided {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    border-color: rgba(0, 255, 136, .74);
}
.seo-product-page .spec-option-tag.spec-option-tag--guided::after,
.seo-product-page .product-page-spec-trigger.product-page-spec-trigger--guided::after {
    position: absolute;
    inset: 2px;
    z-index: 0;
    border: 1px solid rgba(0, 255, 136, .72);
    border-radius: inherit;
    content: '';
    pointer-events: none;
    animation: product-spec-selection-pulse 3s ease-out 1;
}
@keyframes product-spec-selection-pulse {
    0% { box-shadow: inset 0 0 0 0 rgba(0, 255, 136, .42); opacity: .95; }
    72% { box-shadow: inset 0 0 0 8px rgba(0, 255, 136, 0); opacity: 0; }
    100% { box-shadow: inset 0 0 0 8px rgba(0, 255, 136, 0); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
    .seo-product-page .spec-option-tag.spec-option-tag--guided::after,
    .seo-product-page .product-page-spec-trigger.product-page-spec-trigger--guided::after { animation: none; }
}

/* 404 页面：沿用商城首页的深色主题、荧光绿品牌色与卡片层级。 */
html:has(body.seo-not-found-page) { background: #0d1b2a; }
body.seo-page.seo-not-found-page {
    color-scheme: dark;
    --seo-bg: #0d1b2a;
    --seo-surface: hsl(213, 35%, 16%);
    --seo-text: #ffffff;
    --seo-muted: #8e99a4;
    --seo-accent: #00ff88;
    --seo-border: #2d3e50;
    background:
        radial-gradient(circle at 8% -14%, rgba(0, 255, 136, .10), transparent 28rem),
        radial-gradient(circle at 92% 10%, rgba(30, 58, 95, .34), transparent 30rem),
        #0d1b2a;
}
body.seo-page.seo-not-found-page .seo-header,
body.seo-page.seo-not-found-page .seo-footer {
    border-color: rgba(45, 62, 80, .82);
}
body.seo-page.seo-not-found-page .seo-brand {
    color: var(--seo-accent);
    text-shadow: 0 0 20px rgba(0, 255, 136, .18);
}
body.seo-page.seo-not-found-page .seo-header nav { color: var(--seo-muted); }
body.seo-page.seo-not-found-page .seo-header nav a:hover { color: var(--seo-accent); }
body.seo-page.seo-not-found-page .not-found-hero {
    border-color: rgba(45, 62, 80, .92);
    background: linear-gradient(145deg, hsl(213, 35%, 19%), hsl(213, 35%, 14%));
    box-shadow: 0 22px 58px rgba(0, 0, 0, .28);
}
body.seo-page.seo-not-found-page .not-found-hero::before {
    background: radial-gradient(circle, rgba(0, 255, 136, .25), transparent 67%);
}
body.seo-page.seo-not-found-page .not-found-hero::after {
    background: radial-gradient(circle, rgba(30, 58, 95, .72), transparent 67%);
}
body.seo-page.seo-not-found-page .not-found-orbit {
    border-color: rgba(0, 255, 136, .35);
    background: rgba(0, 255, 136, .09);
    color: var(--seo-accent);
    box-shadow: inset 0 0 0 1px rgba(0, 255, 136, .04), 0 0 26px rgba(0, 255, 136, .08);
}
body.seo-page.seo-not-found-page .not-found-code { color: rgba(0, 255, 136, .12); }
body.seo-page.seo-not-found-page .not-found-lead { color: var(--seo-muted); }
body.seo-page.seo-not-found-page .button-primary {
    color: #06291a;
    background: linear-gradient(135deg, #00ff88, #00cc6a);
    box-shadow: 0 8px 20px rgba(0, 255, 136, .18);
}
body.seo-page.seo-not-found-page .button-primary:hover {
    color: #06291a;
    background: linear-gradient(135deg, #35ff9f, #00db73);
}
body.seo-page.seo-not-found-page .button-secondary {
    border-color: var(--seo-border);
    background: rgba(10, 22, 40, .76);
    color: var(--seo-text);
}
body.seo-page.seo-not-found-page .button-secondary:hover {
    border-color: rgba(0, 255, 136, .58);
    background: rgba(0, 255, 136, .08);
    color: var(--seo-accent);
}
body.seo-page.seo-not-found-page .not-found-shortcuts { border-color: rgba(45, 62, 80, .82); }
body.seo-page.seo-not-found-page .not-found-shortcut:hover {
    border-color: rgba(0, 255, 136, .34);
    background: rgba(0, 255, 136, .07);
    color: var(--seo-text);
}
body.seo-page.seo-not-found-page .not-found-shortcut-icon {
    background: rgba(0, 255, 136, .1);
    color: var(--seo-accent);
}
body.seo-page.seo-not-found-page .not-found-section-link,
body.seo-page.seo-not-found-page .not-found-product-price,
body.seo-page.seo-not-found-page .not-found-read-link { color: var(--seo-accent); }
body.seo-page.seo-not-found-page .not-found-product-card,
body.seo-page.seo-not-found-page .not-found-knowledge-card {
    border-color: var(--seo-border);
    background: var(--seo-surface);
    box-shadow: 0 10px 26px rgba(0, 0, 0, .18);
}
body.seo-page.seo-not-found-page .not-found-product-card:hover,
body.seo-page.seo-not-found-page .not-found-knowledge-card:hover {
    border-color: rgba(0, 255, 136, .48);
    box-shadow: 0 16px 34px rgba(0, 0, 0, .30);
}
body.seo-page.seo-not-found-page .not-found-product-image {
    background: #0a1628;
    color: var(--seo-muted);
}
body.seo-page.seo-not-found-page .not-found-knowledge-card .not-found-card-copy p,
body.seo-page.seo-not-found-page .not-found-shortcut small { color: var(--seo-muted); }

/* ============================================================
   联系我们页面
   ============================================================ */

.contact-page { padding-top: 0; }

/* 桌面端导航 */
.contact-desktop-nav {
    display: none;
    align-items: center;
    justify-content: space-between;
    padding: 18px 0 24px;
    border-bottom: 1px solid var(--seo-border);
    margin-bottom: 32px;
}
.contact-desktop-brand {
    color: var(--seo-accent);
    font-size: 22px;
    font-weight: 800;
    letter-spacing: .2px;
}
.contact-desktop-nav-links {
    display: flex;
    gap: 24px;
}
.contact-desktop-nav-links a {
    color: var(--seo-muted);
    font-size: 15px;
    font-weight: 500;
    transition: color .2s ease;
}
.contact-desktop-nav-links a:hover,
.contact-desktop-nav-links a.is-active {
    color: var(--seo-accent);
}
.contact-language-switcher {
    display: flex;
    gap: 4px;
    padding: 4px;
    background: #fff;
    border: 1px solid var(--seo-border);
    border-radius: 8px;
}
.contact-language-switcher .lang-btn {
    padding: 6px 12px;
    border: none;
    background: transparent;
    color: var(--seo-muted);
    font-size: 13px;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: all .2s ease;
}
.contact-language-switcher .lang-btn:hover { color: var(--seo-text); }
.contact-language-switcher .lang-btn.active {
    background: var(--seo-accent);
    color: #fff;
}

/* 移动端头部 */
.contact-mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0 20px;
    border-bottom: 1px solid var(--seo-border);
    margin-bottom: 24px;
}
.contact-mobile-back {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--seo-text);
    border-radius: 8px;
    transition: background .2s ease;
}
.contact-mobile-back:active { background: rgba(0,0,0,.05); }
.contact-mobile-title {
    font-size: 17px;
    font-weight: 700;
}
.contact-mobile-lang-switch {
    display: flex;
    gap: 2px;
    padding: 3px;
    background: #fff;
    border: 1px solid var(--seo-border);
    border-radius: 6px;
}
.contact-mobile-lang-btn {
    padding: 5px 10px;
    border: none;
    background: transparent;
    color: var(--seo-muted);
    font-size: 12px;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
}
.contact-mobile-lang-btn.active {
    background: var(--seo-accent);
    color: #fff;
}

/* 页面头部 */
.contact-page-header {
    text-align: center;
    margin-bottom: 40px;
}
.contact-page-header .eyebrow { margin-bottom: 10px; }
.contact-page-header h1 {
    margin: 0 0 12px;
    font-size: clamp(30px, 5vw, 48px);
    line-height: 1.2;
    font-weight: 800;
}
.contact-lead {
    max-width: 520px;
    margin: 0 auto;
    color: var(--seo-muted);
    font-size: 16px;
    line-height: 1.6;
}

/* 内容布局 */
.contact-content-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 48px;
}

/* 联系信息卡片 */
.contact-info-card {
    background: var(--seo-surface);
    border: 1px solid var(--seo-border);
    border-radius: 18px;
    padding: clamp(20px, 4vw, 32px);
    box-shadow: 0 8px 32px rgba(79, 35, 20, .05);
}
.contact-info-item {
    display: flex;
    gap: 16px;
    padding: 18px 0;
    border-bottom: 1px solid var(--seo-border);
}
.contact-info-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}
.contact-info-item:first-child {
    padding-top: 0;
}
.contact-info-icon {
    flex: 0 0 auto;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(215, 68, 62, .1);
    color: var(--seo-accent);
    border-radius: 12px;
}
.contact-info-icon svg {
    width: 24px;
    height: 24px;
}
.contact-info-text {
    flex: 1;
    min-width: 0;
}
.contact-info-text h3 {
    margin: 0 0 6px;
    font-size: 16px;
    font-weight: 700;
    color: var(--seo-text);
}
.contact-info-text p {
    margin: 0;
    color: var(--seo-muted);
    font-size: 15px;
    line-height: 1.5;
    word-break: break-word;
}
.contact-info-text a {
    color: var(--seo-accent);
    transition: opacity .2s ease;
}
.contact-info-text a:hover { opacity: .8; }

/* 地图卡片 */
.contact-map-card {
    background: var(--seo-surface);
    border: 1px solid var(--seo-border);
    border-radius: 18px;
    padding: clamp(20px, 4vw, 32px);
    box-shadow: 0 8px 32px rgba(79, 35, 20, .05);
}
.contact-map-title {
    margin: 0 0 16px;
    font-size: 18px;
    font-weight: 700;
}
.contact-map-container {
    position: relative;
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    background: #f5f0ec;
}
.contact-map-container iframe {
    display: block;
    width: 100%;
    height: 350px;
    border: none;
}
.contact-map-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 350px;
    color: var(--seo-muted);
    background: #f5f0ec;
    border-radius: 12px;
}
.contact-map-placeholder svg {
    width: 48px;
    height: 48px;
    margin-bottom: 12px;
    opacity: .5;
}
.contact-map-placeholder p {
    margin: 0;
    font-size: 14px;
}

/* 社媒关注区域 */
.contact-social-section {
    text-align: center;
    padding: 40px 0;
    border-top: 1px solid var(--seo-border);
}
.contact-social-title {
    margin: 0 0 8px;
    font-size: clamp(24px, 3.5vw, 32px);
    font-weight: 800;
}
.contact-social-subtitle {
    max-width: 480px;
    margin: 0 auto 32px;
    color: var(--seo-muted);
    font-size: 15px;
}
.contact-social-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 16px;
    max-width: 720px;
    margin: 0 auto;
}
.contact-social-loading {
    grid-column: 1 / -1;
    color: var(--seo-muted);
    padding: 20px;
}
.contact-social-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 24px 16px;
    background: var(--seo-surface);
    border: 1px solid var(--seo-border);
    border-radius: 14px;
    transition: all .2s ease;
}
.contact-social-card:hover {
    border-color: rgba(215, 68, 62, .35);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(79, 35, 20, .1);
}
.contact-social-icon {
    width: 40px;
    height: 40px;
}
.contact-social-icon-fallback {
    font-size: 32px;
}
.contact-social-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--seo-text);
}
.contact-social-desc {
    font-size: 12px;
    color: var(--seo-muted);
    line-height: 1.4;
}

/* 管理面板表单样式 */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}
.form-group {
    margin-bottom: 16px;
}
.form-grid .form-group {
    margin-bottom: 0;
}
.form-label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--seo-text);
}
.form-input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--seo-border);
    border-radius: 8px;
    font-size: 14px;
    color: var(--seo-text);
    background: #fff;
    transition: border-color .2s ease, box-shadow .2s ease;
}
.form-input:focus {
    outline: none;
    border-color: var(--seo-accent);
    box-shadow: 0 0 0 3px rgba(215, 68, 62, .1);
}
.form-help {
    margin-top: 6px;
    font-size: 12px;
    color: var(--seo-muted);
    line-height: 1.5;
}
.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--seo-border);
}
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all .2s ease;
}
.btn-primary {
    background: var(--seo-accent);
    color: #fff;
}
.btn-primary:hover { background: #b82f2a; }
.btn-primary:disabled {
    opacity: .6;
    cursor: not-allowed;
}
.btn-secondary {
    background: #fff;
    color: var(--seo-text);
    border: 1px solid var(--seo-border);
}
.btn-secondary:hover {
    border-color: var(--seo-muted);
    background: #faf5f2;
}
.form-message {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    line-height: 1.5;
}
.form-message-success {
    background: rgba(0, 180, 100, .1);
    color: #0a7d4a;
    border: 1px solid rgba(0, 180, 100, .2);
}
.form-message-error {
    background: rgba(255, 77, 79, .1);
    color: #c62828;
    border: 1px solid rgba(255, 77, 79, .2);
}
.form-message-info {
    background: rgba(33, 150, 243, .1);
    color: #1565c0;
    border: 1px solid rgba(33, 150, 243, .2);
}
.page-subtitle {
    margin: 6px 0 0;
    color: var(--seo-muted);
    font-size: 14px;
    font-weight: 400;
}

/* 响应式：平板及以上 */
@media (min-width: 768px) {
    .contact-desktop-nav { display: flex; }
    .contact-mobile-header { display: none; }
    .contact-content-layout {
        grid-template-columns: 1fr 1.2fr;
        gap: 28px;
        align-items: start;
    }
    .contact-map-container iframe { height: 450px; }
    .contact-map-placeholder { height: 450px; }
}

/* 响应式：桌面端 */
@media (min-width: 1024px) {
    .contact-content-layout {
        grid-template-columns: 1fr 1.3fr;
        gap: 36px;
    }
    .contact-social-grid {
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
        gap: 20px;
    }
}

/* 响应式：小屏手机 */
@media (max-width: 480px) {
    .contact-info-item {
        gap: 12px;
        padding: 14px 0;
    }
    .contact-info-icon {
        width: 40px;
        height: 40px;
        border-radius: 10px;
    }
    .contact-info-icon svg {
        width: 20px;
        height: 20px;
    }
    .contact-info-text h3 { font-size: 15px; }
    .contact-info-text p { font-size: 14px; }
    .contact-map-container iframe { height: 280px; }
    .contact-map-placeholder { height: 280px; }
    .contact-social-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .contact-social-card { padding: 18px 12px; }
    .form-grid {
        grid-template-columns: 1fr;
        gap: 0;
    }
    .form-grid .form-group { margin-bottom: 16px; }
    .form-actions { flex-direction: column; }
    .form-actions .btn { width: 100%; }
}

/* ========== 官方社媒页面 ========== */

.social-page-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
    margin-bottom: 48px;
}

.social-page-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px;
    background: var(--seo-surface);
    border: 1.5px solid var(--seo-border);
    border-radius: 16px;
    text-decoration: none;
    color: inherit;
    transition: all 0.25s cubic-bezier(.4,0,.2,1);
    position: relative;
}

.social-page-card:hover {
    text-decoration: none;
    color: inherit;
}

.social-page-card-icon {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    overflow: hidden;
}

.social-page-card-icon img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.social-page-card-info {
    flex: 1;
    min-width: 0;
}

.social-page-card-platform {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .04em;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.social-page-card-name {
    font-size: 17px;
    font-weight: 600;
    color: var(--seo-text);
    margin-bottom: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.social-page-card-desc {
    font-size: 13px;
    color: var(--seo-text-secondary);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.social-page-card-arrow {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: var(--seo-text-secondary);
    opacity: .5;
    transition: opacity .2s;
}

.social-page-card:hover .social-page-card-arrow {
    opacity: 1;
}

.social-page-card-arrow svg {
    width: 100%;
    height: 100%;
}

.contact-social-loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px 0;
    color: var(--seo-text-secondary);
    font-size: 14px;
}

/* ========== 服务条款页面 ========== */

.terms-page-content {
    background: var(--seo-surface);
    border: 1px solid var(--seo-border);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 48px;
    line-height: 1.75;
    color: var(--seo-text-secondary);
    font-size: 15px;
}

.terms-warning {
    background: linear-gradient(135deg, rgba(215, 68, 62, .1), rgba(215, 68, 62, .05));
    border: 1px solid rgba(215, 68, 62, .2);
    border-radius: 14px;
    padding: 20px 24px;
    margin-bottom: 32px;
}

.terms-warning-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--seo-accent);
    margin-bottom: 6px;
}

.terms-warning-desc {
    font-size: 14px;
    color: var(--seo-text-secondary);
    line-height: 1.6;
}

.terms-section-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--seo-text);
    margin: 28px 0 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--seo-border);
}

.terms-section-title:first-of-type {
    margin-top: 0;
}

.terms-page-content p {
    margin: 0 0 12px;
    line-height: 1.75;
}

.terms-footer {
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px solid var(--seo-border);
    font-size: 13px;
    color: var(--seo-text-tertiary);
    text-align: right;
}

/* 社媒/服务条款响应式 */
@media (max-width: 768px) {
    .social-page-grid {
        grid-template-columns: 1fr;
        gap: 14px;
        margin-bottom: 32px;
    }
    .social-page-card {
        padding: 18px;
        gap: 14px;
    }
    .social-page-card-icon {
        width: 48px;
        height: 48px;
    }
    .social-page-card-icon img {
        width: 26px;
        height: 26px;
    }
    .social-page-card-name {
        font-size: 15px;
    }
    .social-page-card-desc {
        font-size: 12px;
    }
    .terms-page-content {
        padding: 24px 20px;
        font-size: 14px;
        border-radius: 14px;
    }
    .terms-warning {
        padding: 16px 18px;
    }
    .terms-section-title {
        font-size: 16px;
        margin-top: 24px;
    }
}

@media (max-width: 480px) {
    .social-page-grid {
        gap: 12px;
    }
    .social-page-card {
        padding: 16px;
    }
    .terms-page-content {
        padding: 20px 16px;
    }
}

/* ============================================================
   site-footer 主题变体（product / knowledge）
   基础结构样式见 index.css 中的 .site-footer
   ============================================================ */

/* ---- product 主题 ---- */
.site-footer--product {
    --footer-bg: var(--product-bg-tertiary, #0f172a);
    --footer-border: var(--product-border-primary);
    --footer-text-primary: var(--product-text, #F8FAFC);
    --footer-text-secondary: var(--product-muted, #94A3B8);
    --footer-text-muted: var(--product-muted, #64748B);
    --footer-accent: var(--product-green, #00D77A);
}

/* ---- knowledge 主题 ---- */
.site-footer--knowledge {
    --footer-bg: var(--knowledge-bg-tertiary, #0f172a);
    --footer-border: var(--knowledge-border-primary);
    --footer-text-primary: var(--knowledge-text, #F8FAFC);
    --footer-text-secondary: var(--knowledge-muted, #94A3B8);
    --footer-text-muted: var(--knowledge-muted, #64748B);
    --footer-accent: var(--knowledge-green, #00D77A);
}