/* ============================================================
   Boao Intelligence - English Site Main Stylesheet
   Independent B2B E-commerce Design
   ============================================================ */

/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --navy: #1a237e;
    --navy-light: #283593;
    --navy-dark: #0d1452;
    --accent: #ffc107;
    --accent-dark: #ffa000;
    --text: #1a1a2e;
    --text-light: #555;
    --text-muted: #888;
    --bg: #ffffff;
    --bg-light: #f5f7fa;
    --bg-card: #ffffff;
    --border: #e0e4e8;
    --success: #2e7d32;
    --danger: #c62828;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --shadow-hover: 0 12px 40px rgba(26,35,126,0.15);
    --container: 1200px;
    --transition: all 0.3s ease;
}
html { scroll-behavior: smooth; }
body {
    font-family: 'Segoe UI', 'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
}
a { color: var(--navy); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--navy-light); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* ===== Container ===== */
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(0,0,0,0.06);
    border-bottom: 1px solid var(--border);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 800;
    color: var(--navy);
    letter-spacing: -0.5px;
}
.logo-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--navy), var(--navy-light));
    color: #fff;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 800;
}
.logo-text { line-height: 1.1; }
.logo-text small { display: block; font-size: 10px; font-weight: 500; color: var(--text-muted); letter-spacing: 1px; }

.main-nav { display: flex; align-items: center; gap: 32px; }
.main-nav a {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    position: relative;
    padding: 8px 0;
}
.main-nav a:hover { color: var(--navy); }
.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--navy);
    border-radius: 2px;
}

/* 二级下拉导航 */
.nav-has-dropdown { position: relative; }
.nav-has-dropdown > a .dropdown-arrow {
    font-size: 10px;
    margin-left: 4px;
    transition: transform 0.2s ease;
    display: inline-block;
}
.nav-has-dropdown:hover > a .dropdown-arrow { transform: rotate(180deg); }

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    background: #fff;
    min-width: 220px;
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0,0,0,0.12), 0 2px 8px rgba(0,0,0,0.06);
    border: 1px solid var(--border);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
    z-index: 1000;
}
.nav-has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}
.dropdown-menu a {
    display: block;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    white-space: nowrap;
    transition: all 0.15s ease;
    border-radius: 0;
}
.dropdown-menu a:hover {
    background: var(--bg-light);
    color: var(--navy);
    padding-left: 26px;
}
.dropdown-menu a::after { display: none; }

@media (max-width: 768px) {
    .dropdown-menu {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        border: none;
        padding-left: 16px;
    }
}

.header-actions { display: flex; align-items: center; gap: 16px; }
.btn-lang {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-light);
    padding: 6px 14px;
    border: 1px solid var(--border);
    border-radius: 20px;
    cursor: pointer;
    background: transparent;
    transition: var(--transition);
}
.btn-lang:hover { border-color: var(--navy); color: var(--navy); }

.cart-link {
    position: relative;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    padding: 8px 16px;
    border-radius: 6px;
    transition: var(--transition);
}
.cart-link:hover { background: var(--bg-light); color: var(--navy); }
.cart-count {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    background: var(--accent);
    color: var(--navy-dark);
    font-size: 12px;
    font-weight: 700;
    border-radius: 10px;
    padding: 0 6px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}
.btn-primary {
    background: var(--navy);
    color: #fff;
}
.btn-primary:hover { background: var(--navy-light); color: #fff; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(26,35,126,0.3); }
.btn-accent {
    background: var(--accent);
    color: var(--navy-dark);
}
.btn-accent:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(255,193,7,0.4); }
.btn-outline {
    background: transparent;
    color: var(--navy);
    border: 2px solid var(--navy);
}
.btn-outline:hover { background: var(--navy); color: #fff; }
.btn-lg { padding: 16px 36px; font-size: 16px; }
.btn-block { width: 100%; }

/* ===== Hero ===== */
.hero {
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 50%, var(--navy-light) 100%);
    color: #fff;
    padding: 80px 0 100px;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,193,7,0.08) 0%, transparent 70%);
    border-radius: 50%;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(40,53,147,0.3) 0%, transparent 70%);
    border-radius: 50%;
}
.hero-content { position: relative; z-index: 2; max-width: 720px; }
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.12);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.2);
    padding: 8px 16px;
    border-radius: 24px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
}
.hero-badge .dot { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.5; } }
.hero h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 20px;
}
.hero h1 .highlight { color: var(--accent); }
.hero p {
    font-size: 18px;
    line-height: 1.7;
    color: rgba(255,255,255,0.85);
    margin-bottom: 36px;
    max-width: 600px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 56px;
    padding-top: 36px;
    border-top: 1px solid rgba(255,255,255,0.15);
}
.hero-stat .num { font-size: 32px; font-weight: 800; color: var(--accent); }
.hero-stat .label { font-size: 13px; color: rgba(255,255,255,0.7); margin-top: 4px; }

/* ===== Section ===== */
.section { padding: 64px 0; }
.section-bg { background: var(--bg-light); }
.section-header { text-align: center; max-width: 720px; margin: 0 auto 32px; }
.section-header h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.5px;
    margin-bottom: 8px;
}
.section-header h2 .accent { color: var(--navy); }
.section-header p { font-size: 15px; color: var(--text-light); line-height: 1.6; }

/* ===== Category Cards (image-based, larger, centered) ===== */
.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    max-width: 1080px;
    margin: 0 auto;
}
.category-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}
.category-card:hover {
    border-color: var(--navy);
    box-shadow: var(--shadow-hover);
    transform: translateY(-6px);
}
.category-image {
    width: 100%;
    aspect-ratio: 4 / 3;
    background: var(--bg-light);
    overflow: hidden;
    position: relative;
}
.category-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.category-card:hover .category-image img { transform: scale(1.08); }
.category-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--border);
    background: linear-gradient(135deg, var(--bg-light), #eef1f6);
}
.category-body {
    padding: 24px 28px 28px;
    text-align: center;
}
.category-body h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}
.category-body p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 16px;
    min-height: 44px;
}
.category-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    font-size: 13px;
}
.category-meta .count {
    color: var(--navy);
    font-weight: 700;
}
.category-meta .arrow {
    color: var(--text-muted);
    transition: var(--transition);
}
.category-card:hover .category-meta .arrow {
    color: var(--navy);
    transform: translateX(4px);
}

/* ===== Product Cards ===== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.product-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
    border-color: transparent;
}
.product-image {
    width: 100%;
    aspect-ratio: 1;
    background: var(--bg-light);
    overflow: hidden;
    position: relative;
}
.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.product-card:hover .product-image img { transform: scale(1.08); }
.product-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--accent);
    color: var(--navy-dark);
    font-size: 11px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.product-info { padding: 16px 18px 20px; flex: 1; display: flex; flex-direction: column; }
.product-info h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    line-height: 1.4;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 42px;
}
.product-sku { font-size: 12px; color: var(--text-muted); margin-bottom: 10px; }
.product-footer { margin-top: auto; display: flex; align-items: center; justify-content: space-between; }
.product-price { font-size: 20px; font-weight: 800; color: var(--navy); }
.product-price small { font-size: 12px; font-weight: 500; color: var(--text-muted); }
.product-price .from { font-size: 11px; color: var(--text-muted); font-weight: 500; display: block; line-height: 1; margin-bottom: 2px; }
.btn-cart {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--navy);
    color: #fff;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: var(--transition);
}
.btn-cart:hover { background: var(--navy-light); transform: scale(1.1); }
.btn-cart:disabled { background: var(--border); cursor: not-allowed; transform: none; }

/* ===== Products Tab Navigation ===== */
.products-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 28px;
    border-bottom: 2px solid var(--border);
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    justify-content: center;
}
.products-tabs::-webkit-scrollbar { display: none; }

/* TAB buttons (homepage Products section) */
.tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 22px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-light);
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition);
    font-family: inherit;
}
.tab-btn svg { flex-shrink: 0; opacity: 0.7; transition: var(--transition); }
.tab-btn:hover {
    color: var(--navy);
    background: rgba(26,35,126,0.04);
}
.tab-btn:hover svg { opacity: 1; }
.tab-btn.active {
    color: var(--navy);
    border-bottom-color: var(--navy);
}
.tab-btn.active svg { opacity: 1; color: var(--accent); }
.tab-btn:focus-visible {
    outline: 2px solid var(--navy);
    outline-offset: -2px;
    border-radius: 4px;
}
/* TAB product count badge */
.tab-btn .tab-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 18px;
    padding: 0 6px;
    margin-left: 4px;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    background: rgba(0,0,0,0.06);
    border-radius: 9px;
}
.tab-btn.active .tab-count {
    color: var(--navy-dark);
    background: var(--accent);
}

/* ===== Products Page TAB 按钮 (药丸式) ===== */
.products-tab {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 24px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-light);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.25s ease;
    font-family: inherit;
    margin-bottom: 0;
}
.products-tab:hover {
    border-color: var(--navy-light);
    color: var(--navy);
    background: rgba(26, 35, 126, 0.04);
    transform: translateY(-1px);
}
.products-tab.active {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
    border-color: var(--navy);
    color: #fff;
    box-shadow: 0 4px 12px rgba(26, 35, 126, 0.25);
}
.products-tab.active:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(26, 35, 126, 0.35);
}
.products-tab .tab-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 20px;
    padding: 0 7px;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    background: rgba(0, 0, 0, 0.06);
    border-radius: 10px;
    transition: all 0.25s ease;
}
.products-tab:hover .tab-count {
    background: rgba(26, 35, 126, 0.1);
    color: var(--navy);
}
.products-tab.active .tab-count {
    color: var(--navy-dark);
    background: var(--accent);
}
.products-tab:focus-visible {
    outline: 2px solid var(--navy);
    outline-offset: 2px;
}

/* 容器调整:去掉底部边框线,改为间距 */
.products-tabs {
    gap: 10px;
    border-bottom: none;
    margin-bottom: 32px;
    padding: 4px 0;
}

/* 响应式:移动端TAB紧凑 */
@media (max-width: 768px) {
    .products-tab {
        padding: 8px 14px;
        font-size: 13px;
    }
    .products-tab .tab-count {
        min-width: 20px;
        height: 18px;
        font-size: 10px;
    }
    .products-tabs {
        gap: 8px;
        justify-content: flex-start;
    }
}

/* Featured product badge (gold "★ Top Pick") */
.product-featured-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 700;
    color: var(--navy-dark);
    background: linear-gradient(135deg, #ffd54f 0%, var(--accent) 100%);
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 6px rgba(255,193,7,0.4);
}
.product-featured {
    border-color: rgba(255,193,7,0.4);
}
.product-featured:hover {
    border-color: var(--accent);
    box-shadow: 0 8px 28px rgba(255,193,7,0.18), 0 2px 8px rgba(0,0,0,0.06);
}

/* New Arrival badge (green "NEW" ribbon) */
.product-new-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 800;
    color: #fff;
    background: linear-gradient(135deg, #2e7d32 0%, #1b5e20 100%);
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    box-shadow: 0 2px 8px rgba(46,125,50,0.45);
    animation: newBadgePulse 2.4s ease-in-out infinite;
}
@keyframes newBadgePulse {
    0%, 100% { transform: scale(1); box-shadow: 0 2px 8px rgba(46,125,50,0.45); }
    50% { transform: scale(1.06); box-shadow: 0 4px 14px rgba(46,125,50,0.6); }
}
.product-new {
    border-color: rgba(46,125,50,0.35);
    position: relative;
}
.product-new:hover {
    border-color: #2e7d32;
    box-shadow: 0 8px 28px rgba(46,125,50,0.18), 0 2px 8px rgba(0,0,0,0.06);
}
@media print {
    .product-new-badge { animation: none; }
}

/* TAB panels */
.tab-panel {
    display: block;
    animation: tabFadeIn 0.3s ease;
}
.tab-panel[hidden] {
    display: none;
}
@keyframes tabFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* TAB description (SEO-rich copy above product grid) */
.tab-desc {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-light);
    background: rgba(26,35,126,0.04);
    border-left: 3px solid var(--navy);
    padding: 14px 20px;
    border-radius: 0 var(--radius) var(--radius) 0;
    margin-bottom: 24px;
    max-width: 880px;
}

/* Browse-all link below product grid */
.tab-browse {
    text-align: center;
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px dashed var(--border);
}
.tab-browse .btn {
    padding: 12px 32px;
    font-size: 14px;
}

@media (max-width: 768px) {
    .products-tabs { justify-content: flex-start; }
    .tab-btn { padding: 12px 16px; font-size: 13px; gap: 6px; }
    .tab-btn span { font-size: 13px; }
    .tab-desc { font-size: 13px; padding: 12px 16px; }
    .tab-browse { margin-top: 24px; padding-top: 16px; }
}

/* ===== Compact Product List (Products page) ===== */
.products-section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 32px;
    gap: 24px;
    flex-wrap: wrap;
}
.products-title-block h2 {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text);
    margin-bottom: 6px;
}
.products-title-block h2 .accent { color: var(--navy); }
.products-title-block p {
    font-size: 14px;
    color: var(--text-muted);
}
.products-title-block p a { color: var(--navy); font-weight: 600; }
.products-nav {
    display: flex;
    align-items: center;
    gap: 12px;
}
.products-nav .nav-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: var(--transition);
}
.products-nav .nav-btn:hover {
    background: var(--navy);
    color: #fff;
    border-color: var(--navy);
}
.products-nav .page-indicator {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 600;
    min-width: 60px;
    text-align: center;
}
.product-grid-compact {
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}
.product-card-compact .product-image {
    aspect-ratio: 1;
}
.product-card-compact .product-info {
    padding: 12px 14px 14px;
}
.product-card-compact .product-info h3 {
    font-size: 14px;
    line-height: 1.4;
    margin-bottom: 6px;
    min-height: 0;
    -webkit-line-clamp: 2;
}
.product-card-compact .product-price {
    font-size: 16px;
    margin-bottom: 8px;
}
.product-card-compact .product-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
}
.product-card-compact .view-details {
    font-size: 12px;
    color: var(--navy);
    font-weight: 600;
    transition: var(--transition);
}
.product-card-compact:hover .view-details {
    transform: translateX(4px);
}
.btn-cart-sm {
    width: 28px;
    height: 28px;
    border: none;
    background: var(--navy);
    color: #fff;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: var(--transition);
    flex-shrink: 0;
}
.btn-cart-sm:hover { background: var(--navy-light); transform: scale(1.1); }
.product-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--border);
    background: var(--bg-light);
}
.products-loadmore {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-top: 36px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
}
.products-loadmore .page-info {
    font-size: 13px;
    color: var(--text-muted);
}
.btn-loadmore {
    padding: 12px 32px;
    font-size: 14px;
}
.empty-products {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}
.empty-products p { margin-bottom: 16px; }

/* ===== About Preview ===== */
.about-preview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}
.about-text h2 { font-size: 36px; font-weight: 800; margin-bottom: 20px; letter-spacing: -0.5px; }
.about-text p { font-size: 16px; color: var(--text-light); line-height: 1.8; margin-bottom: 16px; }
.about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 32px 0; }
.about-feature { display: flex; align-items: flex-start; gap: 12px; }
.about-feature .icon {
    width: 40px;
    height: 40px;
    background: rgba(26,35,126,0.08);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--navy);
    flex-shrink: 0;
}
.about-feature .icon svg { width: 22px; height: 22px; }
.about-feature .text h4 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.about-feature .text p { font-size: 13px; color: var(--text-muted); margin: 0; }
.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--navy), var(--navy-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.3);
    font-size: 120px;
}
.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}
.about-image:hover img { transform: scale(1.05); }

/* ===== Why Choose Us ===== */
.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.why-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.why-card:hover {
    border-color: var(--navy);
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}

/* === 大图片区域(16:9 横向) === */
.why-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, #1a237e 0%, #0d1452 100%);
    overflow: hidden;
    position: relative;
}
.why-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}
.why-card:hover .why-image img {
    transform: scale(1.08);
}
/* 蒙版:半透明深蓝渐变 */
.why-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(26, 35, 126, 0.1) 0%, rgba(13, 20, 82, 0.45) 100%);
    pointer-events: none;
    z-index: 1;
}
/* 图标徽章(右下角,深蓝渐变圆) */
.why-icon-badge {
    position: absolute;
    bottom: 12px;
    right: 12px;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #1a237e 0%, #5e35b1 100%);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(26, 35, 126, 0.4);
    z-index: 2;
    border: 2px solid rgba(255, 255, 255, 0.3);
}
.why-card:hover .why-icon-badge {
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(26, 35, 126, 0.5);
}
/* 无图时 fallback:深蓝渐变 + 黄色大字母 */
.why-image-fallback {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a237e 0%, #0d1452 100%);
    color: #ffc107;
    font-family: 'Inter', -apple-system, sans-serif;
    font-size: 28px;
    font-weight: 800;
    letter-spacing: 2px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    z-index: 2;
}
.why-image-fallback span {
    display: block;
}
.why-image-placeholder img {
    display: none;
}
.why-image-placeholder .why-image-overlay {
    display: none;
}

/* === 文字区域 === */
.why-body {
    padding: 22px 24px 24px;
    text-align: left;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.why-body h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
    line-height: 1.4;
}
.why-body p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
    margin: 0 0 12px;
    flex: 1;
}
.why-highlight {
    display: inline-block;
    padding: 6px 12px;
    background: linear-gradient(135deg, #e8eaf6 0%, #ede7f6 100%);
    color: #1a237e;
    font-size: 13px;
    font-weight: 700;
    border-radius: 6px;
    border: 1px solid rgba(26, 35, 126, 0.12);
    align-self: flex-start;
    margin-top: auto;
    letter-spacing: 0.3px;
}

@media (max-width: 992px) { .why-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) {
    .why-grid { grid-template-columns: 1fr; gap: 16px; }
    .why-body { padding: 18px 20px 20px; }
    .why-image-fallback { font-size: 22px; }
}

/* ===== CTA Banner ===== */
.cta-banner {
    background: linear-gradient(135deg, var(--navy-dark), var(--navy));
    border-radius: var(--radius-lg);
    padding: 56px 64px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,193,7,0.1) 0%, transparent 70%);
    border-radius: 50%;
}
.cta-banner h2 { font-size: 32px; font-weight: 800; margin-bottom: 12px; position: relative; z-index: 2; }
.cta-banner p { font-size: 16px; color: rgba(255,255,255,0.8); margin-bottom: 28px; position: relative; z-index: 2; }
.cta-banner .hero-actions { justify-content: center; position: relative; z-index: 2; }

/* ===== Footer ===== */
.site-footer {
    background: #0d1126;
    color: rgba(255,255,255,0.7);
    padding: 64px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand h3 { color: #fff; font-size: 20px; font-weight: 800; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.7; margin-bottom: 20px; }
.footer-contact { font-size: 14px; line-height: 2; }
.footer-contact a { color: rgba(255,255,255,0.7); }
.footer-contact a:hover { color: var(--accent); }
.footer-col h4 { color: #fff; font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; color: rgba(255,255,255,0.6); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 0;
    font-size: 13px;
    color: rgba(255,255,255,0.4);
}
.footer-payments { display: flex; align-items: center; gap: 12px; }
.footer-payments .pay-badge {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    color: rgba(255,255,255,0.6);
}
.footer-lang-switch {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: rgba(255,255,255,0.6);
    font-size: 13px;
    cursor: pointer;
    padding: 6px 14px;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 20px;
    transition: var(--transition);
}
.footer-lang-switch:hover { color: var(--accent); border-color: var(--accent); }

/* ===== Page Hero (inner pages) ===== */
.page-hero {
    background: linear-gradient(135deg, var(--navy-dark), var(--navy));
    color: #fff;
    padding: 64px 0;
    text-align: center;
}
.page-hero h1 { font-size: 40px; font-weight: 800; margin-bottom: 12px; letter-spacing: -0.5px; }
.page-hero p { font-size: 16px; color: rgba(255,255,255,0.8); max-width: 600px; margin: 0 auto; }
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    justify-content: center;
    margin-top: 16px;
}
.breadcrumb a { color: rgba(255,255,255,0.6); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: rgba(255,255,255,0.3); }

/* ===== Content Page ===== */
.content-page { padding: 64px 0; }
.content-body { max-width: 800px; margin: 0 auto; }
.content-body h2 { font-size: 28px; font-weight: 700; margin: 32px 0 16px; color: var(--navy); }
.content-body h3 { font-size: 20px; font-weight: 700; margin: 24px 0 12px; }
.content-body p { font-size: 16px; line-height: 1.8; color: var(--text-light); margin-bottom: 16px; }
.content-body ul { list-style: disc; padding-left: 24px; margin-bottom: 16px; }
.content-body ul li { font-size: 15px; line-height: 1.8; color: var(--text-light); margin-bottom: 8px; }
.content-body strong { color: var(--text); }

/* ===== Contact Form ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 48px; }
.contact-info h3 { font-size: 20px; font-weight: 700; margin-bottom: 20px; }
.contact-info-item { display: flex; gap: 16px; margin-bottom: 24px; }
.contact-info-item .icon {
    width: 44px; height: 44px;
    background: rgba(26,35,126,0.08);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}
.contact-info-item .text h4 { font-size: 14px; font-weight: 600; color: var(--text-muted); margin-bottom: 4px; }
.contact-info-item .text p { font-size: 15px; font-weight: 600; color: var(--text); }
.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow);
}
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; color: var(--text); }
.form-group label .req { color: var(--danger); }
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: inherit;
    transition: var(--transition);
    background: #fff;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--navy);
    box-shadow: 0 0 0 3px rgba(26,35,126,0.08);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-note { font-size: 13px; color: var(--text-muted); margin-top: 16px; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .category-grid { grid-template-columns: repeat(2, 1fr); }
    .product-grid, .why-grid { grid-template-columns: repeat(2, 1fr); }
    .about-preview { grid-template-columns: 1fr; gap: 40px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .contact-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 38px; }
}
@media (max-width: 768px) {
    .container { padding: 0 16px; }
    .header-inner { height: 60px; }
    .main-nav { display: none; }
    .hero { padding: 48px 0 64px; }
    .hero h1 { font-size: 30px; }
    .hero p { font-size: 16px; }
    .hero-stats { flex-wrap: wrap; gap: 24px; }
    .hero-stat .num { font-size: 24px; }
    .section { padding: 48px 0; }
    .section-header h2 { font-size: 26px; }
    .category-grid { grid-template-columns: repeat(2, 1fr); }
    .product-grid, .why-grid { grid-template-columns: 1fr; }
    .about-features { grid-template-columns: 1fr; }
    .cta-banner { padding: 36px 24px; }
    .cta-banner h2 { font-size: 24px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
    .page-hero h1 { font-size: 28px; }
    .content-body h2 { font-size: 22px; }
    .form-row { grid-template-columns: 1fr; }
    .contact-form { padding: 24px; }
}

/* ===== P1-3: Page Overview Card (replaces ai-summary) ===== */
.overview-section {
    padding: 64px 0;
    background: linear-gradient(180deg, rgba(26,35,126,0.03) 0%, transparent 100%);
}
.overview-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04), 0 8px 24px rgba(26,35,126,0.06);
    border: 1px solid var(--border);
    position: relative;
}
.overview-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--navy) 0%, var(--navy-light) 50%, var(--accent) 100%);
}

/* Top bar */
.overview-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 28px;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(180deg, #fafbfd 0%, #fff 100%);
}
.overview-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 700;
    color: var(--navy);
    text-transform: uppercase;
    letter-spacing: 1px;
}
.overview-ai-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 11px;
    font-weight: 600;
    color: var(--success);
    background: rgba(46,125,50,0.08);
    padding: 4px 10px;
    border-radius: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Body grid */
.overview-body {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 0;
}

/* Left main column */
.overview-main {
    padding: 32px 36px 32px 36px;
    border-right: 1px solid var(--border);
}
.overview-title {
    font-size: 24px;
    font-weight: 800;
    color: var(--text);
    line-height: 1.25;
    letter-spacing: -0.5px;
    margin-bottom: 14px;
}
.overview-title .accent { color: var(--navy); }
.overview-lead {
    font-size: 14.5px;
    line-height: 1.75;
    color: var(--text-light);
    margin-bottom: 24px;
}
.overview-lead strong {
    color: var(--navy);
    font-weight: 700;
}

/* Capability chips */
.overview-capabilities {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}
.cap-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(26,35,126,0.06);
    color: var(--navy);
    font-size: 12.5px;
    font-weight: 600;
    border-radius: 16px;
    border: 1px solid rgba(26,35,126,0.1);
    transition: var(--transition);
}
.cap-chip:hover {
    background: var(--navy);
    color: #fff;
    border-color: var(--navy);
}
.cap-chip svg { flex-shrink: 0; }

/* Stats highlights */
.overview-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    padding-top: 20px;
    border-top: 1px dashed var(--border);
}
.ov-stat {
    text-align: center;
    padding: 4px 0;
}
.ov-stat .num {
    display: block;
    font-size: 22px;
    font-weight: 800;
    color: var(--navy);
    line-height: 1.1;
    letter-spacing: -0.5px;
}
.ov-stat .num .sub {
    font-size: 13px;
    font-weight: 600;
    color: var(--navy-light);
    margin-left: 1px;
}
.ov-stat .lab {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

/* Right aside */
.overview-aside {
    padding: 28px 28px 28px 28px;
    background: linear-gradient(180deg, #fafbfd 0%, #f5f7fa 100%);
}
.aside-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--navy);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--accent);
}
.aside-nav {
    list-style: none;
    margin-bottom: 24px;
}
.aside-nav li { margin-bottom: 2px; }
.aside-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 6px;
    color: var(--text);
    font-size: 13.5px;
    font-weight: 500;
    transition: var(--transition);
    border-left: 3px solid transparent;
}
.aside-nav a:hover {
    background: #fff;
    color: var(--navy);
    border-left-color: var(--navy);
    transform: translateX(2px);
}
.aside-nav .nav-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    background: rgba(26,35,126,0.08);
    color: var(--navy);
    font-size: 11px;
    font-weight: 700;
    border-radius: 50%;
    flex-shrink: 0;
}
.aside-nav a:hover .nav-num {
    background: var(--navy);
    color: #fff;
}

/* Aside CTA */
.aside-cta {
    padding-top: 20px;
    border-top: 1px solid var(--border);
}
.aside-cta .btn {
    margin-bottom: 12px;
    padding: 12px 20px;
    font-size: 14px;
}
.aside-email {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 14px;
    color: var(--navy);
    font-size: 13px;
    font-weight: 600;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: var(--transition);
}
.aside-email:hover {
    border-color: var(--navy);
    background: rgba(26,35,126,0.04);
}

/* Visually hidden (for AI/SEO copy) */
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0,0,0,0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Responsive */
@media (max-width: 992px) {
    .overview-body { grid-template-columns: 1fr; }
    .overview-main {
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
    .overview-stats { grid-template-columns: repeat(2, 1fr); gap: 16px; }
}
@media (max-width: 768px) {
    .overview-top { padding: 12px 20px; }
    .overview-main { padding: 24px 20px; }
    .overview-aside { padding: 24px 20px; }
    .overview-title { font-size: 20px; }
    .overview-lead { font-size: 14px; }
    .overview-stats { grid-template-columns: repeat(2, 1fr); }
    .ov-stat .num { font-size: 18px; }
    .aside-nav a { font-size: 13px; padding: 7px 10px; }
}

/* Print: hide decorative overview card */
@media print {
    .overview-section { display: none; }
}

/* ===== P1-1: FAQ Section ===== */
.faq-list {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px 24px;
    align-items: stretch;
}
/* 单列变体 (Home 页 FAQ 用) */
.faq-list--single {
    grid-template-columns: 1fr;
    max-width: 880px;
    gap: 14px;
}
.faq-list--single .faq-item[hidden] { display: none; }
.faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.faq-item:hover {
    border-color: var(--navy);
    box-shadow: 0 2px 8px rgba(26,35,126,0.06);
}
.faq-question {
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
    padding: 16px 22px;
    margin: 0;
    cursor: default;
    display: flex;
    align-items: center;
    gap: 12px;
    line-height: 1.5;
}
.faq-question::before {
    content: 'Q';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    background: var(--navy);
    color: #fff;
    border-radius: 50%;
    font-size: 13px;
    font-weight: 800;
}
.faq-answer {
    padding: 0 22px 18px 62px;
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-light);
    flex: 1 0 auto;
    margin-top: auto;
}
.faq-answer p { margin: 0; }
.faq-answer a { color: var(--navy); font-weight: 600; text-decoration: underline; text-underline-offset: 2px; }

@media (max-width: 992px) {
    .faq-list {
        grid-template-columns: 1fr;
        max-width: 880px;
        gap: 14px;
    }
}
@media (max-width: 768px) {
    .faq-question { font-size: 14px; padding: 14px 18px; }
    .faq-answer { padding: 0 18px 14px 18px; font-size: 13px; }
}

/* ===== Print-friendly (improves AI crawler text extraction) ===== */
@media print {
    .faq-list { display: block !important; }
    .faq-item { box-shadow: none; border: 1px solid #ccc; }
}

/* ===== P2-1: Trust Badges Section ===== */
.trust-section {
    background: #fff;
    padding: 64px 0;
    border-bottom: 1px solid var(--border);
}
.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto 24px;
}
.trust-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.trust-card:hover {
    border-color: var(--navy);
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}

/* === 大证书图区域(A4 横向,3:2 比例) === */
.trust-image {
    width: 100%;
    aspect-ratio: 3 / 2;
    background: linear-gradient(135deg, #1a237e 0%, #0d1452 100%);
    overflow: hidden;
    position: relative;
}
.trust-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}
.trust-card:hover .trust-image img {
    transform: scale(1.05);
}
/* 蒙版:半透明深蓝渐变 + 水印标识(暗示这是参考样图,非真实证书) */
.trust-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(26, 35, 126, 0.25) 0%, rgba(13, 20, 82, 0.55) 100%);
    pointer-events: none;
    z-index: 1;
}
/* 无图时 fallback:深蓝渐变 + 居中大字母 */
.trust-image-fallback {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a237e 0%, #0d1452 100%);
    color: #ffc107;
    font-family: 'Inter', -apple-system, sans-serif;
    font-size: 32px;
    font-weight: 800;
    letter-spacing: 2px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    z-index: 2;
}
.trust-image-fallback span {
    display: block;
}
.trust-image-placeholder img {
    display: none;
}
.trust-image-placeholder .trust-image-overlay {
    display: none;
}

/* === 文字区域 === */
.trust-body {
    padding: 20px 22px 22px;
    text-align: left;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.trust-body h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 6px;
    line-height: 1.4;
}
.trust-body p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0 0 12px;
    flex: 1;
}
.trust-meta {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding-top: 10px;
    border-top: 1px solid var(--border);
    margin-top: auto;
}
.trust-meta .count {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.trust-note {
    text-align: center;
    max-width: 720px;
    margin: 12px auto 0;
    font-size: 13px;
    color: var(--text-muted);
    font-style: italic;
    line-height: 1.6;
}

@media (max-width: 992px) { .trust-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) {
    .trust-grid { grid-template-columns: 1fr; gap: 16px; }
    .trust-body { padding: 16px 18px 18px; }
    .trust-image-fallback { font-size: 24px; }
}

/* ===== P2-2: Industry Applications Section ===== */
.industry-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.industry-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
}
.industry-card:hover {
    border-color: var(--navy);
    box-shadow: var(--shadow-hover);
    transform: translateY(-6px);
}

/* === 大图片区域(参考 Product Categories 卡片设计) === */
.industry-image {
    width: 100%;
    aspect-ratio: 4 / 3;
    background: linear-gradient(135deg, #1a237e 0%, #0d1452 100%);
    overflow: hidden;
    position: relative;
}
.industry-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}
.industry-card:hover .industry-image img {
    transform: scale(1.08);
}
/* 无图时 fallback:深蓝渐变 + 居中大字母 */
.industry-image-fallback {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a237e 0%, #0d1452 100%);
    color: #ffc107;
    font-family: 'Inter', -apple-system, sans-serif;
    font-size: 36px;
    font-weight: 800;
    letter-spacing: 2px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}
.industry-image-fallback span {
    display: block;
}
.industry-image-placeholder img {
    display: none;
}

/* === 文字区域 === */
.industry-body {
    padding: 22px 24px 24px;
    text-align: left;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.industry-body h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
    line-height: 1.4;
}
.industry-body p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
    margin: 0 0 14px;
    flex: 1;
}
.industry-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 12px;
    border-top: 1px solid var(--border);
    margin-top: auto;
}
.industry-meta .count {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}
.industry-meta .arrow {
    font-size: 13px;
    color: var(--navy);
    font-weight: 600;
    transition: transform 0.3s ease;
}
.industry-card:hover .industry-meta .arrow {
    transform: translateX(4px);
}

@media (max-width: 992px) { .industry-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) {
    .industry-grid { grid-template-columns: 1fr; gap: 16px; }
    .industry-body { padding: 18px 20px 20px; }
    .industry-image-fallback { font-size: 28px; }
}

/* ===== P2-4: Newsletter Section ===== */
.newsletter-section {
    padding: 56px 0;
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.newsletter-section::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -10%;
    width: 480px;
    height: 480px;
    background: radial-gradient(circle, rgba(255, 193, 7, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.newsletter-card {
    position: relative;
    z-index: 2;
    max-width: 880px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}
.newsletter-content h2 {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.5px;
    line-height: 1.25;
    margin-bottom: 12px;
    color: #fff;
}
.newsletter-content p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.78);
    line-height: 1.7;
    margin: 0;
}
.newsletter-form {
    width: 100%;
}
.newsletter-input-group {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}
.newsletter-input-group input[type="email"] {
    flex: 1;
    padding: 14px 18px;
    font-size: 14px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    border-radius: var(--radius);
    transition: var(--transition);
    backdrop-filter: blur(4px);
}
.newsletter-input-group input[type="email"]::placeholder {
    color: rgba(255, 255, 255, 0.5);
}
.newsletter-input-group input[type="email"]:focus {
    outline: none;
    border-color: var(--accent);
    background: rgba(255, 255, 255, 0.12);
}
.newsletter-input-group .btn {
    padding: 14px 24px;
    flex-shrink: 0;
}
.newsletter-msg {
    font-size: 13px;
    margin: 0 0 8px;
    min-height: 18px;
    color: var(--accent);
    font-weight: 600;
}
.newsletter-msg.error { color: #ff8a80; }
.newsletter-msg.success { color: #b9f6ca; }
.newsletter-privacy {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.5;
    margin: 0;
}
.newsletter-privacy a {
    color: rgba(255, 255, 255, 0.78);
    text-decoration: underline;
    text-underline-offset: 2px;
}
.newsletter-privacy a:hover { color: var(--accent); }

@media (max-width: 768px) {
    .newsletter-card {
        grid-template-columns: 1fr;
        gap: 24px;
        text-align: center;
    }
    .newsletter-content h2 { font-size: 24px; }
    .newsletter-input-group { flex-direction: column; }
    .newsletter-input-group .btn { width: 100%; }
}
@media print {
    .trust-section, .industry-grid, .newsletter-section { display: block !important; }
    .trust-badge, .industry-card, .newsletter-card {
        box-shadow: none;
        border: 1px solid #ccc;
        background: #fff !important;
        color: #000 !important;
    }
}

/* ===== P3-2: Social Share Section ===== */
.share-section {
    padding: 64px 0;
    background: var(--bg-light);
}
.share-card {
    max-width: 920px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
    background: #fff;
    padding: 22px 28px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}
.share-content h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 4px;
    letter-spacing: -0.3px;
}
.share-content p {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
}
.share-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}
.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-light);
    background: var(--bg-light);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    font-family: inherit;
}
.share-btn:hover {
    background: var(--navy);
    color: #fff;
    border-color: var(--navy);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(26, 35, 126, 0.2);
}
.share-btn:active {
    transform: translateY(0);
}
.share-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}
.share-btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

@media (max-width: 600px) {
    .share-card {
        flex-direction: column;
        text-align: center;
        padding: 18px 20px;
    }
    .share-content {
        margin-bottom: 12px;
    }
    .share-buttons {
        justify-content: center;
    }
    .share-btn {
        padding: 7px 10px;
        font-size: 12px;
    }
    .share-btn span {
        display: none;
    }
    .share-btn svg {
        width: 18px;
        height: 18px;
    }
}
@media print {
    .share-section { display: none !important; }
}

/* ============================================================
   FAQ v2 Page (Standalone /en/faq.html)
   2-column layout: sticky sidebar + content
   ============================================================ */

/* ===== Breadcrumb ===== */
.breadcrumb {
    background: var(--bg-light);
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
}
.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    gap: 8px;
    align-items: center;
    font-size: 13px;
    color: var(--text-muted);
}
.breadcrumb li a { color: var(--text-light); }
.breadcrumb li a:hover { color: var(--navy); }
.breadcrumb li::after {
    content: '/';
    margin-left: 8px;
    color: var(--border);
}
.breadcrumb li:last-child::after { display: none; }
.breadcrumb li.active { color: var(--text); font-weight: 600; }

/* ===== FAQ Hero ===== */
.faq-hero {
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 60%, var(--navy-light) 100%);
    color: #fff;
    padding: 64px 0 80px;
    position: relative;
    overflow: hidden;
}
.faq-hero::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -10%;
    width: 520px;
    height: 520px;
    background: radial-gradient(circle, rgba(255, 193, 7, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}
.faq-hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 440px;
    height: 440px;
    background: radial-gradient(circle, rgba(40, 53, 147, 0.3) 0%, transparent 70%);
    border-radius: 50%;
}
.faq-hero-content {
    position: relative;
    z-index: 2;
    max-width: 880px;
    margin: 0 auto;
    text-align: center;
}
.faq-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 8px 16px;
    border-radius: 24px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
}
.faq-hero h1 {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 16px;
}
.faq-hero-subtitle {
    font-size: 17px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 32px;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}
.faq-hero-subtitle a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}
.faq-search-box {
    position: relative;
    max-width: 560px;
    margin: 0 auto 32px;
}
.faq-search-box input {
    width: 100%;
    padding: 16px 48px 16px 22px;
    font-size: 15px;
    border: 1px solid rgba(255, 255, 255, 0.25);
    background: rgba(255, 255, 255, 0.96);
    color: var(--text);
    border-radius: 28px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    transition: var(--transition);
    font-family: inherit;
}
.faq-search-box input:focus {
    outline: none;
    background: #fff;
    border-color: var(--accent);
    box-shadow: 0 8px 32px rgba(255, 193, 7, 0.25);
}
.faq-search-box input::placeholder { color: var(--text-muted); }
.faq-search-box #faqSearchClear {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--bg-light);
    border: 1px solid var(--border);
    color: var(--text-light);
    width: 26px;
    height: 26px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}
.faq-search-box #faqSearchClear:hover {
    background: var(--navy);
    color: #fff;
    border-color: var(--navy);
}
.faq-hero-stats {
    display: flex;
    gap: 48px;
    justify-content: center;
    margin-top: 32px;
    padding-top: 28px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
}
.faq-stat .num {
    display: block;
    font-size: 28px;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 6px;
}
.faq-stat .label {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===== AI Summary Block ===== */
.ai-summary-section {
    background: #fff;
    padding: 28px 0 0;
}
.ai-summary {
    max-width: 880px;
    margin: 0 auto;
    padding: 20px 24px;
    background: linear-gradient(135deg, #f0f4ff 0%, #fff8e1 100%);
    border: 1px solid rgba(26, 35, 126, 0.12);
    border-radius: var(--radius);
    border-top: 3px solid var(--navy);
}
.ai-summary-label {
    font-size: 12px;
    font-weight: 700;
    color: var(--navy);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}
.ai-summary .overview-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 6px;
}
.ai-summary .overview-lead {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-light);
    margin: 0;
}

/* ===== FAQ Main Layout (2-column) ===== */
.faq-section {
    padding: 64px 0;
    background: #fff;
}
.faq-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    align-items: start;
    max-width: 1200px;
    margin: 0 auto;
}

/* Sticky Sidebar */
.faq-sidebar {
    position: sticky;
    top: 90px;
}
.faq-sidebar-inner {
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
}
.faq-sidebar-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}
.faq-cat-nav {
    list-style: none;
    padding: 0;
    margin: 0 0 20px;
}
.faq-cat-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius);
    color: var(--text);
    text-decoration: none;
    transition: var(--transition);
    border-left: 3px solid transparent;
    margin-bottom: 4px;
}
.faq-cat-link:hover {
    background: #fff;
    color: var(--navy);
}
.faq-cat-link.active {
    background: var(--navy);
    color: #fff;
    border-left-color: var(--accent);
}
.faq-cat-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(26, 35, 126, 0.08);
    border-radius: var(--radius);
    color: var(--navy);
}
.faq-cat-link.active .faq-cat-icon {
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
}
.faq-cat-icon svg { width: 18px; height: 18px; }
.faq-cat-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    line-height: 1.2;
}
.faq-cat-name { font-size: 14px; font-weight: 600; }
.faq-cat-count { font-size: 11px; color: var(--text-muted); }
.faq-cat-link.active .faq-cat-count { color: rgba(255, 255, 255, 0.75); }

.faq-sidebar-cta {
    padding-top: 16px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.faq-sidebar-email, .faq-sidebar-phone {
    text-align: center;
    font-size: 13px;
    color: var(--text-light);
    padding: 8px;
    text-decoration: none;
    border-radius: var(--radius);
    transition: var(--transition);
}
.faq-sidebar-email:hover, .faq-sidebar-phone:hover {
    color: var(--navy);
    background: #fff;
}

/* ===== FAQ Content ===== */
.faq-content { min-width: 0; }
.faq-group {
    margin-bottom: 48px;
    scroll-margin-top: 100px;
}
.faq-group:last-child { margin-bottom: 0; }
.faq-group-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--bg-light);
}
.faq-group-icon {
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
    color: #fff;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 16px rgba(26, 35, 126, 0.2);
}
.faq-group-icon svg { width: 28px; height: 28px; }
.faq-group-header h2 {
    font-size: 22px;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.5px;
    margin: 0 0 4px;
    line-height: 1.3;
}
.faq-group-header p {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.5;
}

/* FAQ Item (details/summary) */
.faq-group-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}
.faq-item:hover {
    border-color: var(--navy);
    box-shadow: 0 2px 8px rgba(26, 35, 126, 0.06);
}
.faq-item[open] {
    border-color: var(--navy);
    box-shadow: 0 4px 16px rgba(26, 35, 126, 0.08);
}
.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 22px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    list-style: none;
    user-select: none;
}
.faq-question::-webkit-details-marker { display: none; }
.faq-q-text { flex: 1; line-height: 1.5; }
.faq-q-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--navy);
    transition: transform 0.25s ease;
}
.faq-q-icon svg { width: 18px; height: 18px; }
.faq-item[open] .faq-q-icon { transform: rotate(180deg); }
.faq-answer {
    padding: 0 22px 18px 22px;
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-light);
}
.faq-answer a {
    color: var(--navy);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 2px;
}
.faq-answer strong { color: var(--text); font-weight: 700; }

/* Feedback */
.faq-feedback {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 22px 18px;
    border-top: 1px dashed var(--border);
    margin-top: 4px;
    font-size: 12px;
    color: var(--text-muted);
}
.faq-feedback-label { font-weight: 600; }
.faq-feedback-btn {
    background: var(--bg-light);
    border: 1px solid var(--border);
    color: var(--text-light);
    padding: 5px 12px;
    border-radius: 16px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}
.faq-feedback-btn:hover {
    background: var(--navy);
    color: #fff;
    border-color: var(--navy);
}
.faq-feedback.voted .faq-feedback-btn {
    cursor: default;
    opacity: 0.5;
}
.faq-feedback.voted .faq-feedback-btn:hover {
    background: var(--bg-light);
    color: var(--text-light);
    border-color: var(--border);
}
.faq-feedback.voted-yes .faq-feedback-btn[data-vote="yes"],
.faq-feedback.voted-no .faq-feedback-btn[data-vote="no"] {
    background: var(--navy);
    color: #fff;
    border-color: var(--navy);
    opacity: 1;
}
.faq-feedback-msg {
    margin-left: auto;
    color: var(--success);
    font-weight: 600;
}

/* No results */
.faq-no-results {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-muted);
    font-size: 15px;
}
.faq-no-results a { color: var(--navy); font-weight: 600; }

/* ===== Contact CTA Card ===== */
.faq-cta-card {
    max-width: 880px;
    margin: 0 auto;
    text-align: center;
    padding: 48px 32px;
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 100%);
    color: #fff;
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(26, 35, 126, 0.2);
}
.faq-cta-card h2 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}
.faq-cta-card p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 28px;
    line-height: 1.6;
}
.faq-cta-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}
.faq-cta-buttons .btn-outline {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.4);
}
.faq-cta-buttons .btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
    .faq-layout {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .faq-sidebar {
        position: static;
    }
    .faq-sidebar-inner {
        position: relative;
    }
    .faq-cat-nav {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-bottom: 16px;
    }
    .faq-cat-nav li {
        flex: 1 1 calc(50% - 4px);
    }
    .faq-cat-link {
        padding: 8px 10px;
    }
    .faq-cat-count { display: none; }
    .faq-sidebar-cta {
        flex-direction: row;
        flex-wrap: wrap;
    }
    .faq-sidebar-cta .btn { flex: 1 1 100%; }
    .faq-sidebar-email, .faq-sidebar-phone {
        flex: 1;
    }
}
@media (max-width: 768px) {
    .faq-hero { padding: 48px 0 64px; }
    .faq-hero h1 { font-size: 32px; }
    .faq-hero-subtitle { font-size: 15px; }
    .faq-search-box input { padding: 14px 44px 14px 18px; font-size: 14px; }
    .faq-hero-stats { gap: 24px; flex-wrap: wrap; }
    .faq-stat .num { font-size: 22px; }
    .faq-group-header h2 { font-size: 18px; }
    .faq-group-icon { width: 44px; height: 44px; }
    .faq-group-icon svg { width: 22px; height: 22px; }
    .faq-question { padding: 14px 18px; font-size: 14px; }
    .faq-answer { padding: 0 18px 14px; font-size: 13px; }
    .faq-feedback { padding: 10px 18px 14px; flex-wrap: wrap; }
    .faq-cta-card { padding: 32px 20px; }
    .faq-cta-card h2 { font-size: 22px; }
    .faq-cta-buttons .btn { width: 100%; }
}
@media print {
    .faq-hero, .share-section, .faq-search-box, .faq-feedback { display: none !important; }
    .faq-layout { grid-template-columns: 1fr !important; }
    .faq-sidebar { display: none; }
    .faq-item { border: 1px solid #ccc !important; box-shadow: none !important; page-break-inside: avoid; }
    .faq-item[open] .faq-answer { display: block !important; }
    .faq-question { padding: 12px 0 !important; }
    .faq-answer { padding: 0 0 12px 0 !important; }
}

/* ============================================================
   FAQ Pagination (Home page single-column with paging)
   ============================================================ */
.faq-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}
.faq-pagination[hidden] { display: none; }
.faq-page-numbers {
    display: flex;
    gap: 6px;
    align-items: center;
}
.faq-page-num {
    min-width: 38px;
    height: 38px;
    padding: 0 12px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-light);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: inherit;
}
.faq-page-num:hover:not(.active) {
    border-color: var(--navy);
    color: var(--navy);
    background: var(--bg-light);
}
.faq-page-num.active {
    background: var(--navy);
    color: #fff;
    border-color: var(--navy);
    cursor: default;
}
.faq-page-btn {
    min-width: 38px;
    height: 38px;
    padding: 0 10px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.faq-page-btn:hover:not(:disabled) {
    border-color: var(--navy);
    color: var(--navy);
    background: var(--bg-light);
}
.faq-page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}
.faq-page-btn svg {
    width: 16px;
    height: 16px;
}
.faq-page-btn:focus-visible,
.faq-page-num:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

@media (max-width: 768px) {
    .faq-pagination { flex-wrap: wrap; gap: 6px; }
    .faq-page-num, .faq-page-btn { min-width: 34px; height: 34px; font-size: 13px; }
}
@media print {
    .faq-pagination { display: none !important; }
    /* 打印时显示所有 FAQ(对 AI 爬虫和 PDF 友好) */
    .faq-list--single .faq-item[hidden] { display: block !important; }
}

/* ============================================================
   News & Insights Section (替代 Newsletter)
   编辑杂志风格 · 大卡片特色文章 + 列表式分类入口
   ============================================================ */
.news-section {
    padding: 64px 0;
    background:
        radial-gradient(ellipse at top right, rgba(26, 35, 126, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at bottom left, rgba(255, 193, 7, 0.05) 0%, transparent 50%),
        linear-gradient(180deg, #fbfcff 0%, #f4f6fc 100%);
    position: relative;
    overflow: hidden;
}

.news-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(26, 35, 126, 0.15), transparent);
}

.news-section .container {
    position: relative;
    z-index: 2;
}

.news-section .section-head {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 56px;
}

.news-section .section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #1a237e;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    background: #fff;
    padding: 8px 18px;
    border-radius: 24px;
    border: 1px solid rgba(26, 35, 126, 0.15);
    margin-bottom: 16px;
    box-shadow: 0 2px 8px rgba(26, 35, 126, 0.06);
}

.news-section .section-eyebrow::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #ffc107;
    box-shadow: 0 0 8px rgba(255, 193, 7, 0.6);
    animation: newsDotPulse 2s ease-in-out infinite;
}

@keyframes newsDotPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.3); }
}

.news-section .section-title {
    font-size: 38px;
    font-weight: 800;
    color: #0d1452;
    margin: 0 0 14px;
    line-height: 1.15;
    letter-spacing: -0.8px;
}

.news-section .section-title em {
    font-style: normal;
    background: linear-gradient(135deg, #1a237e 0%, #ffc107 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.news-section .section-subtitle {
    font-size: 15px;
    color: #64748b;
    line-height: 1.7;
    margin: 0;
}

/* === 统一新闻卡片网格:3 列 × 2 行,所有卡片尺寸一致,16:9 图片 === */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.news-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease, border-color 0.3s ease;
    text-decoration: none;
    color: inherit;
    border: 1px solid #eef0f5;
    position: relative;
}

.news-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, #1a237e, #ffc107);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
    z-index: 3;
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(26, 35, 126, 0.14);
    border-color: rgba(26, 35, 126, 0.2);
}

.news-card:hover::before {
    transform: scaleX(1);
}

/* 统一图片容器:16:9 宽高比,尺寸 800x450 (@2x Retina) */
.news-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, #1a237e 0%, #0d1452 100%);
    overflow: hidden;
    position: relative;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.news-card:hover .news-image img {
    transform: scale(1.08);
}

/* 图片底部暗色渐变蒙版(提升文字可读性,留作未来叠字用) */
.news-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(13, 20, 82, 0.45) 100%);
    pointer-events: none;
    z-index: 1;
}

/* 图片占位回退:深蓝渐变 + 黄色 "NEWS" 文字 */
.news-image-fallback {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(circle at 30% 20%, rgba(255, 193, 7, 0.15), transparent 60%),
        linear-gradient(135deg, #1a237e 0%, #0d1452 100%);
    color: #ffc107;
    font-family: 'Inter', -apple-system, sans-serif;
    font-size: 28px;
    font-weight: 800;
    letter-spacing: 2px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    z-index: 2;
}

.news-image-fallback::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(45deg, rgba(255, 255, 255, 0.04) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(255, 255, 255, 0.04) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(255, 255, 255, 0.04) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(255, 255, 255, 0.04) 75%);
    background-size: 28px 28px;
    background-position: 0 0, 0 14px, 14px -14px, -14px 0;
    opacity: 0.5;
}

/* 图片加载失败时:隐藏 overlay 和 fallback 文字背景,显示纯渐变 */
.news-image-placeholder img { display: none; }
.news-image-placeholder .news-image-overlay,
.news-image-placeholder .news-image-fallback::before { display: none; }

.news-body {
    padding: 20px 22px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-title {
    font-size: 17px;
    font-weight: 700;
    color: #0d1452;
    line-height: 1.4;
    margin: 0 0 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    letter-spacing: -0.2px;
    transition: color 0.2s ease;
}

.news-card:hover .news-title {
    color: #1a237e;
}

.news-excerpt {
    font-size: 13px;
    color: #64748b;
    line-height: 1.6;
    margin: 0 0 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    color: #94a3b8;
    padding-top: 12px;
    border-top: 1px solid #f1f5f9;
    margin-top: auto;
}

.news-date {
    font-weight: 700;
    color: #1a237e;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.news-date::before {
    content: '';
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: #ffc107;
}

.news-read {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: #94a3b8;
}

.news-read::before {
    content: '◷';
    font-size: 12px;
}

/* === 空状态 === */
.news-empty-state {
    background: #fff;
    border-radius: 16px;
    padding: 56px 32px;
    text-align: center;
    border: 2px dashed rgba(26, 35, 126, 0.15);
    margin: 0 auto 48px;
    max-width: 720px;
    position: relative;
    overflow: hidden;
}

.news-empty-state::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -10%;
    width: 120%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(26, 35, 126, 0.03) 0%, transparent 60%);
    pointer-events: none;
}

.news-empty-icon {
    color: #1a237e;
    opacity: 0.3;
    margin-bottom: 20px;
    display: inline-flex;
    width: 80px;
    height: 80px;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(26, 35, 126, 0.08), rgba(255, 193, 7, 0.08));
    border-radius: 50%;
    position: relative;
}

.news-empty-title {
    font-size: 24px;
    font-weight: 800;
    color: #0d1452;
    margin: 0 0 12px;
    letter-spacing: -0.5px;
}

.news-empty-desc {
    font-size: 14px;
    color: #64748b;
    line-height: 1.7;
    max-width: 540px;
    margin: 0 auto 28px;
}

.news-empty-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* === News 分类卡片(全新设计:水平 banner 风格) === */
.news-cat-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}

.news-cat-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: #fff;
    border-radius: 14px;
    padding: 24px 28px;
    text-decoration: none;
    color: inherit;
    border: 1px solid #eef0f5;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.news-cat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, #1a237e, #ffc107);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.4s ease;
}

.news-cat-card:hover {
    border-color: transparent;
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(26, 35, 126, 0.12);
}

.news-cat-card:hover::before {
    transform: scaleY(1);
}

.news-cat-card-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: linear-gradient(135deg, #1a237e 0%, #283593 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 6px 16px rgba(26, 35, 126, 0.2);
    position: relative;
}

.news-cat-card-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.2), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.news-cat-card:hover .news-cat-card-icon::after {
    opacity: 1;
}

.news-cat-card-body {
    flex: 1;
    min-width: 0;
}

.news-cat-card-title {
    font-size: 17px;
    font-weight: 700;
    color: #0d1452;
    margin: 0 0 4px;
    letter-spacing: -0.2px;
}

.news-cat-card-desc {
    font-size: 13px;
    color: #64748b;
    line-height: 1.55;
    margin: 0 0 6px;
}

.news-cat-card-count {
    font-size: 11px;
    color: #94a3b8;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.news-cat-card-count::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: #2e7d32;
}

.news-cat-card-arrow {
    color: #1a237e;
    font-size: 20px;
    font-weight: 700;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(26, 35, 126, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
}

.news-cat-card:hover .news-cat-card-arrow {
    transform: translateX(4px);
    background: #1a237e;
    color: #fff;
}

/* === View All News 按钮 === */
.news-view-all {
    text-align: center;
    padding-top: 8px;
}

.news-view-all .btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.5px;
    background: linear-gradient(135deg, #1a237e 0%, #283593 100%);
    color: #fff;
    border: none;
    border-radius: 50px;
    box-shadow: 0 8px 24px rgba(26, 35, 126, 0.25);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
}

.news-view-all .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(26, 35, 126, 0.35);
    background: linear-gradient(135deg, #283593 0%, #1a237e 100%);
}

.news-view-all .btn svg {
    transition: transform 0.3s ease;
}

.news-view-all .btn:hover svg {
    transform: translateX(4px);
}

/* === 响应式 === */
@media (max-width: 992px) {
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 18px;
    }
    .news-section .section-title { font-size: 30px; }
    .news-section { padding: 48px 0; }
}

@media (max-width: 768px) {
    .news-grid { grid-template-columns: 1fr; gap: 16px; }
    .news-cat-cards { grid-template-columns: 1fr; }
    .news-section { padding: 48px 0; }
    .news-section .section-title { font-size: 26px; }
    .news-section .section-head { margin-bottom: 36px; }
    .news-body { padding: 16px 18px; }
    .news-empty-state { padding: 36px 20px; }
    .news-empty-actions { flex-direction: column; align-items: stretch; }
    .news-cat-card { padding: 18px 20px; gap: 14px; }
    .news-cat-card-icon { width: 44px; height: 44px; }
    .news-cat-card-title { font-size: 15px; }
    .news-cat-card-desc { font-size: 12px; }
}

@media print {
    .news-section { background: #fff; padding: 32px 0; }
    .news-card { box-shadow: none; border: 1px solid #ddd; }
    .news-cat-cards { break-inside: avoid; }
    .news-section .section-eyebrow::before,
    .news-date::before { display: none; }
}

/* === 减少动画偏好 === */
@media (prefers-reduced-motion: reduce) {
    .news-section .section-eyebrow::before { animation: none; }
    .news-card, .news-cat-card { transition: none; }
    .news-card:hover { transform: none; }
    .news-card:hover .news-image img { transform: none; }
}

/* ============================================================
   Home Page Module Backgrounds (p19)
   每个模块专属背景,纯 CSS 实现,纯渐变+几何图案
   设计原则:
   1. 节奏感:深(Hero)→淡(Overview)→淡金(Cert)→淡灰(Prod)→
            白蓝(About)→淡金(Why)→白(Custom)→淡蓝(Ind)→
            淡灰(FAQ)→淡紫(Share)→渐变(News)→深(CTA)
   2. 主题关联:每个背景隐喻模块内容
   3. 极淡:不抢卡片视觉,只做氛围
   ============================================================ */

/* 模块 2: Page Overview - 点阵网格(信息架构感) */
.overview-section {
    background:
        radial-gradient(circle at 1px 1px, rgba(26, 35, 126, 0.08) 1px, transparent 0),
        linear-gradient(180deg, rgba(26, 35, 126, 0.025) 0%, transparent 100%) !important;
    background-size: 24px 24px, 100% 100% !important;
    position: relative;
}

/* 模块 3: Trust Certifications - 淡金同心圆(品质认证感) */
.trust-section {
    background:
        radial-gradient(circle at 50% 50%, rgba(255, 193, 7, 0.08) 0%, transparent 25%),
        radial-gradient(circle at 50% 50%, rgba(255, 193, 7, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(255, 193, 7, 0.03) 0%, transparent 55%),
        linear-gradient(180deg, #fff 0%, #fffbf0 100%) !important;
    background-attachment: fixed, fixed, fixed, scroll !important;
}

/* 模块 4: Products - 网格线条(产品目录感) */
#products {
    background:
        linear-gradient(rgba(26, 35, 126, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(26, 35, 126, 0.025) 1px, transparent 1px),
        linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%) !important;
    background-size: 48px 48px, 48px 48px, 100% 100% !important;
}

/* 模块 5: About Preview - 径向蓝光晕(品牌信任感) */
#about {
    background:
        radial-gradient(ellipse at top right, rgba(26, 35, 126, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse at bottom left, rgba(255, 193, 7, 0.04) 0%, transparent 60%),
        #fff !important;
}

/* 模块 6: Why Choose Boao - 淡金对角线(对比优势感) */
#why {
    background:
        repeating-linear-gradient(45deg, transparent 0, transparent 60px, rgba(255, 193, 7, 0.025) 60px, rgba(255, 193, 7, 0.025) 61px),
        linear-gradient(180deg, #fffcf5 0%, #fff8e8 100%) !important;
}

/* 模块 8: Industries We Serve - 经纬网格线(全球化) */
#industries {
    background:
        linear-gradient(rgba(26, 35, 126, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(26, 35, 126, 0.03) 1px, transparent 1px),
        radial-gradient(ellipse at center, rgba(26, 35, 126, 0.04) 0%, transparent 70%),
        linear-gradient(180deg, #f8fafc 0%, #eef2fb 100%) !important;
    background-size: 80px 80px, 80px 80px, 100% 100%, 100% 100% !important;
}

/* 模块 9: FAQ - 极淡问号纹理(问答感) */
#faq {
    background:
        radial-gradient(circle at 20% 30%, rgba(26, 35, 126, 0.025) 0%, transparent 30%),
        radial-gradient(circle at 80% 70%, rgba(26, 35, 126, 0.025) 0%, transparent 30%),
        linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%) !important;
}

/* 模块 10: Social Share - 圆弧波纹(分享扩散感) */
.share-section {
    background:
        radial-gradient(circle at 0% 50%, rgba(94, 53, 177, 0.06) 0%, transparent 25%),
        radial-gradient(circle at 100% 50%, rgba(26, 35, 126, 0.05) 0%, transparent 25%),
        linear-gradient(180deg, #fafafe 0%, #f5f7fc 100%) !important;
}

/* 模块 11: News & Insights - 强化报纸线条 */
.news-section {
    background:
        repeating-linear-gradient(0deg, transparent 0, transparent 80px, rgba(26, 35, 126, 0.015) 80px, rgba(26, 35, 126, 0.015) 81px),
        radial-gradient(ellipse at top right, rgba(26, 35, 126, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at bottom left, rgba(255, 193, 7, 0.05) 0%, transparent 50%),
        linear-gradient(180deg, #fbfcff 0%, #f4f6fc 100%) !important;
}

/* 模块 1: Hero - 在现有深蓝渐变上叠加雷达光晕圆环 */
.hero {
    background:
        radial-gradient(circle at 80% 50%, rgba(255, 193, 7, 0.04) 0%, transparent 18%),
        radial-gradient(circle at 80% 50%, rgba(255, 193, 7, 0.04) 0%, transparent 25%),
        radial-gradient(circle at 80% 50%, rgba(255, 193, 7, 0.04) 0%, transparent 32%),
        radial-gradient(circle at 80% 50%, rgba(255, 193, 7, 0.04) 0%, transparent 40%),
        linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 50%, var(--navy-light) 100%) !important;
}

/* 模块 12: CTA Banner - 加强光晕 + 网格 */
.cta-banner::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 80% 50%, rgba(255, 193, 7, 0.15) 0%, transparent 40%),
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 100% 100%, 40px 40px, 40px 40px;
    pointer-events: none;
    z-index: 1;
}

/* === 响应式调整:移动端减弱背景 === */
@media (max-width: 768px) {
    .trust-section,
    #products,
    #why,
    #industries,
    #faq,
    .share-section {
        background-attachment: scroll !important;
    }
    /* 移动端只保留渐变,去掉图案 */
    #products {
        background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%) !important;
    }
    #industries {
        background: linear-gradient(180deg, #f8fafc 0%, #eef2fb 100%) !important;
    }
    #why {
        background: linear-gradient(180deg, #fffcf5 0%, #fff8e8 100%) !important;
    }
}

/* === 打印时关闭所有装饰背景 === */
@media print {
    .overview-section,
    .trust-section,
    #products,
    #about,
    #why,
    #industries,
    #faq,
    .share-section,
    .news-section {
        background: #fff !important;
    }
    .hero::after,
    .cta-banner::after { display: none; }
}

/* === 减少动画偏好 === */
@media (prefers-reduced-motion: reduce) {
    .hero { animation: none; }
}

/* === Hero 多 Banner 轮播（原生 JS, v=20260721p1） === */
.hero-carousel {
    position: relative;
    width: 100%;
    overflow: hidden;
}
.hero-carousel .hero-slides {
    position: relative;
    width: 100%;
    min-height: 540px;
}
.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.6s ease;
    pointer-events: none;
    z-index: 1;
}
.hero-slide.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    z-index: 2;
    position: relative; /* 撑开容器高度 */
}
.hero-carousel .hero-slide .hero-content {
    padding: 80px 0 100px;
}

/* 圆点指示器 */
.hero-dots {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}
.hero-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: all 0.3s ease;
    outline: none;
}
.hero-dot:hover {
    background: rgba(255, 255, 255, 0.7);
    transform: scale(1.2);
}
.hero-dot.active {
    background: #c9a55c;
    width: 28px;
    border-radius: 5px;
}

/* 左右箭头 */
.hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #fff;
    font-size: 24px;
    line-height: 42px;
    text-align: center;
    cursor: pointer;
    z-index: 10;
    opacity: 0;
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}
.hero-carousel:hover .hero-arrow {
    opacity: 1;
}
.hero-arrow:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.6);
}
.hero-arrow-prev { left: 24px; }
.hero-arrow-next { right: 24px; }

/* 移动端适配 */
@media (max-width: 768px) {
    .hero-carousel .hero-slides {
        min-height: 480px;
    }
    .hero-carousel .hero-slide .hero-content {
        padding: 60px 0 80px;
    }
    .hero-arrow {
        width: 36px;
        height: 36px;
        line-height: 34px;
        font-size: 20px;
    }
    .hero-arrow-prev { left: 12px; }
    .hero-arrow-next { right: 12px; }
    .hero-dots {
        bottom: 20px;
        gap: 8px;
    }
    /* 移动端始终显示箭头（hover 不可用） */
    .hero-arrow {
        opacity: 0.7;
    }
}

/* 单张 banner 时隐藏控制元素 */
.hero-carousel:not(:has(.hero-slide:nth-child(2))) .hero-dots,
.hero-carousel:not(:has(.hero-slide:nth-child(2))) .hero-arrow {
    display: none;
}

/* === 后台 AI 按钮组件样式（v=20260721p1） === */
.ai-btn {
    display: inline-block;
    padding: 4px 10px;
    margin-left: 8px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff !important;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    vertical-align: middle;
    transition: all 0.2s ease;
    text-decoration: none;
}
.ai-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(102, 126, 234, 0.3);
}
.ai-btn:active {
    transform: translateY(0);
}
.ai-btn.loading {
    background: #999 !important;
    pointer-events: none;
    opacity: 0.7;
}
.ai-btn.success {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%) !important;
}
.ai-btn.error {
    background: linear-gradient(135deg, #eb3349 0%, #f45c43 100%) !important;
}
.ai-btn-image {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}
.ai-btn-image:hover {
    box-shadow: 0 2px 6px rgba(245, 87, 108, 0.3);
}
.ai-btn-batch {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

/* AI 按钮预览框 */
.ai-preview {
    border: 1px solid #e0e0e0;
    padding: 10px;
    margin-top: 8px;
    background: #fafafa;
    border-radius: 4px;
    display: none;
}
.ai-preview.show {
    display: block;
}
.ai-preview img {
    max-width: 100%;
    height: auto;
    border: 1px solid #e0e0e0;
    border-radius: 2px;
    display: block;
}
.ai-preview-1x1 {
    aspect-ratio: 1 / 1;
    max-width: 220px;
    object-fit: contain;
    background: #fff;
}
.ai-preview-banner {
    aspect-ratio: 16 / 9;
    max-width: 480px;
    object-fit: contain;
    background: #fff;
}

/* 字数统计 */
.ai-char-count {
    font-size: 11px;
    color: #888;
    margin-top: 4px;
    display: block;
}
.ai-char-count.over {
    color: #d9534f;
    font-weight: bold;
}
.ai-char-count.under {
    color: #5cb85c;
}

/* AI 操作按钮组 */
.ai-actions {
    margin-top: 8px;
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}
.ai-actions button {
    padding: 3px 8px;
    font-size: 11px;
    border: 1px solid #ddd;
    background: #fff;
    border-radius: 3px;
    cursor: pointer;
}
.ai-actions button:hover {
    background: #f0f0f0;
}

/* Loading 蒙层 */
.ai-loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 99999;
    display: none;
    align-items: center;
    justify-content: center;
}
.ai-loading-overlay.show {
    display: flex;
}
.ai-loading-overlay .spinner {
    background: #fff;
    padding: 20px 32px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}
.ai-loading-overlay .spinner .icon {
    font-size: 32px;
    color: #667eea;
    margin-bottom: 8px;
    display: inline-block;
    animation: ai-spin 1s linear infinite;
}
@keyframes ai-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* === 打印时关闭所有装饰背景 === */
@media print {
    .overview-section,
    .trust-section,
    #products,
    #about,
    #why,
    #industries,
    #faq,
    .share-section,
    .news-section {
        background: #fff !important;
    }
    .hero::after,
    .cta-banner::after { display: none; }
    /* 打印时只显示第一张 banner */
    .hero-slide:not(.active) { display: none !important; }
    .hero-dots, .hero-arrow { display: none !important; }
}

/* ============================================================ */
/* ===== Products Page Section Backgrounds (纯 CSS 生成) ======== */
/* ============================================================ */
/* 不依赖图片,用 CSS 渐变+图案为每个模块生成匹配内容的背景        */
/* 保持深色锚点(Hero/Stats/CTA)与浅色纹理(Categories/Process/FAQ)交替 */
/* 文字对比度均满足 WCAG AA 标准                                  */

/* 1. Hero - 工厂全景深景
   深蓝渐变 + 对角装配线纹理 + 金色聚光灯晕(模拟工厂车间) */
.page-hero.products-hero {
    background:
        radial-gradient(circle at 82% 50%, rgba(255, 193, 7, 0.10) 0%, transparent 38%),
        repeating-linear-gradient(135deg, transparent 0, transparent 48px, rgba(255, 255, 255, 0.022) 48px, rgba(255, 255, 255, 0.022) 49px),
        repeating-linear-gradient(45deg, transparent 0, transparent 96px, rgba(255, 255, 255, 0.015) 96px, rgba(255, 255, 255, 0.015) 97px),
        linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 55%, var(--navy-light) 100%);
    color: #fff;
}

/* 2. Categories - 电路板纹理
   浅色底 + PCB 网格走线 + 焊盘圆点(模拟电路板) */
#categories.bg-img {
    background:
        radial-gradient(circle at 20px 20px, rgba(26, 35, 126, 0.045) 1.5px, transparent 2px),
        repeating-linear-gradient(0deg, transparent 0, transparent 79px, rgba(26, 35, 126, 0.035) 79px, rgba(26, 35, 126, 0.035) 80px),
        repeating-linear-gradient(90deg, transparent 0, transparent 79px, rgba(26, 35, 126, 0.035) 79px, rgba(26, 35, 126, 0.035) 80px),
        linear-gradient(180deg, #ffffff 0%, #f5f7fa 100%);
    background-size: 40px 40px, 100% 100%, 100% 100%, 100% 100%;
}

/* 3. Products List - 保留现有网格线条，不加背景图 */
/* (#products 保持 .section-bg 不变) */

/* 4. Stats - 全球网络节点
   深蓝底 + 金色发光节点(模拟全球连接点) + 中心光晕 */
#stats.bg-img {
    background:
        radial-gradient(circle at 15% 22%, rgba(255, 193, 7, 0.18) 0%, transparent 6%),
        radial-gradient(circle at 35% 68%, rgba(255, 193, 7, 0.14) 0%, transparent 5%),
        radial-gradient(circle at 62% 28%, rgba(255, 193, 7, 0.16) 0%, transparent 6%),
        radial-gradient(circle at 82% 62%, rgba(255, 193, 7, 0.14) 0%, transparent 5%),
        radial-gradient(circle at 50% 50%, rgba(40, 53, 147, 0.35) 0%, transparent 55%),
        linear-gradient(135deg, #0a0f3d 0%, #16205c 60%, #1a237e 100%);
    color: #fff;
    padding: 48px 0;
}
#stats.bg-img .section-header h2,
#stats.bg-img .section-header p { color: #fff; }

/* 5. Advantages - 保留现有淡金对角线，不加背景图 */
/* (#advantages 保持现有 CSS 不变) */

/* 6. Process - 工程蓝图网格
   浅蓝底 + 主网格线(40px) + 细分网格(8px) + 边角十字标记 */
#process.bg-img {
    background:
        repeating-linear-gradient(0deg, transparent 0, transparent 7px, rgba(26, 35, 126, 0.025) 7px, rgba(26, 35, 126, 0.025) 8px),
        repeating-linear-gradient(90deg, transparent 0, transparent 7px, rgba(26, 35, 126, 0.025) 7px, rgba(26, 35, 126, 0.025) 8px),
        repeating-linear-gradient(0deg, transparent 0, transparent 39px, rgba(26, 35, 126, 0.06) 39px, rgba(26, 35, 126, 0.06) 40px),
        repeating-linear-gradient(90deg, transparent 0, transparent 39px, rgba(26, 35, 126, 0.06) 39px, rgba(26, 35, 126, 0.06) 40px),
        linear-gradient(180deg, #f8fafc 0%, #eef2fb 100%);
    padding: 48px 0;
}

/* 7. FAQ - 对话框纹理
   浅色底 + 四角气泡形光晕(模拟问答对话气泡) */
#faq.bg-img {
    background:
        radial-gradient(circle at 8% 18%, rgba(26, 35, 126, 0.045) 0%, transparent 14%),
        radial-gradient(circle at 92% 82%, rgba(255, 193, 7, 0.045) 0%, transparent 14%),
        radial-gradient(circle at 82% 12%, rgba(26, 35, 126, 0.035) 0%, transparent 11%),
        radial-gradient(circle at 18% 88%, rgba(255, 193, 7, 0.035) 0%, transparent 11%),
        radial-gradient(circle at 50% 50%, rgba(26, 35, 126, 0.015) 0%, transparent 40%),
        linear-gradient(180deg, #ffffff 0%, #fafbfc 100%);
    padding: 48px 0;
}

/* 8. CTA - 工厂日落
   深蓝底 + 右侧暖色光晕(模拟日落) + 金色辉光 */
#cta.bg-img {
    background:
        radial-gradient(circle at 78% 50%, rgba(255, 152, 0, 0.22) 0%, transparent 35%),
        radial-gradient(circle at 78% 50%, rgba(255, 193, 7, 0.15) 0%, transparent 25%),
        linear-gradient(135deg, #0d1452 0%, #1a237e 55%, #283593 100%);
    color: #fff;
    padding: 48px 0;
}
#cta.bg-img .section-header h2,
#cta.bg-img .section-header p,
#cta.bg-img h2,
#cta.bg-img p,
#cta.bg-img h3 { color: #fff; }

/* 移动端:无需特殊处理(纯 CSS 无 fixed 定位,天然兼容 iOS) */