/* ============================================
   宏泽石业 - 移动端全新设计 v4.0
   工厂级大气风格 · 底部 Tab 导航 · App 体验
   配色：深灰黑 + 金色（与桌面端统一）
   最后更新：2026-04-22
============================================ */

/* ===== 1. CSS 变量 ===== */
:root {
    /* 主色调 - 深灰黑 */
    --primary-color: #2c3e50;
    --primary-dark: #1a252f;
    --primary-light: #3d566e;

    /* 金色点缀 */
    --accent-gold: #b8941f;
    --accent-gold-light: #d4af37;
    --accent-gold-soft: rgba(212, 175, 55, 0.1);

    /* 背景 */
    --bg-main: #f0f1f3;
    --bg-card: #ffffff;
    --bg-dark: #1a252f;

    /* 文字 */
    --text-dark: #1a1a1a;
    --text-body: #4a4a4a;
    --text-light: #888888;
    --text-muted: #aaaaaa;

    /* 边框与阴影 */
    --border-color: #e0e4e8;
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);

    /* 间距 */
    --space-xs: 6px;
    --space-sm: 10px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-xxl: 48px;

    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
}

/* ===== 2. 全局重置 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }

html {
    font-size: 16px;
    -webkit-tap-highlight-color: transparent;
}

body {
    padding-bottom: calc(130px + env(safe-area-inset-bottom));
}

/* 主内容容器 */
.container-main, .container {
    max-width: 100%;
    margin: 0 auto;
}

body {
    font-family: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-main);
    color: var(--text-body);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ===== 3. 顶部 Header（精简版）===== */
.site-header {
    background: linear-gradient(160deg, var(--primary-dark) 0%, var(--primary-color) 100%);
    padding: 28px 20px 24px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* 背景纹理 */
.site-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(212,175,55,0.06);
}

.site-header::after {
    content: '';
    position: absolute;
    bottom: -40%;
    left: -20%;
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: rgba(212,175,55,0.04);
}

.site-header h1 {
    font-size: 26px;
    font-weight: 800;
    color: #fff;
    letter-spacing: 3px;
    position: relative;
    z-index: 1;
}

.site-header .slogan {
    font-size: 13px;
    color: rgba(255,255,255,0.7);
    margin-top: 6px;
    letter-spacing: 2px;
    position: relative;
    z-index: 1;
}

/* ===== 4. 底部 Tab 导航（App 风格）===== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #fff;
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: calc(64px + env(safe-area-inset-bottom));
    padding-bottom: env(safe-area-inset-bottom);
    box-shadow: 0 -2px 16px rgba(0,0,0,0.08);
    z-index: 999;
}

.bottom-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 6px 0;
    text-decoration: none;
    color: var(--text-light);
    transition: all 0.2s ease;
    position: relative;
}

.bottom-nav-item i {
    font-size: 22px;
    margin-bottom: 3px;
    transition: transform 0.2s ease;
}

.bottom-nav-item span {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.bottom-nav-item.active {
    color: var(--accent-gold);
}

.bottom-nav-item.active i {
    transform: scale(1.15);
}

/* 激活指示条 */
.bottom-nav-item.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: var(--accent-gold);
    border-radius: 0 0 3px 3px;
}

/* ===== 5. Hero Banner（新增）===== */
.hero-banner {
    position: relative;
    height: 260px;
    overflow: hidden;
}

.hero-slide {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.hero-slide.active { opacity: 1; }

.hero-slide-bg {
    width: 100%; height: 100%;
    background-size: cover;
    background-position: center;
}

/* 遮罩 */
.hero-slide-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(26,37,47,0.5) 0%, rgba(26,37,47,0.3) 50%, rgba(26,37,47,0.6) 100%);
}

.hero-slide-content {
    position: absolute;
    bottom: 40px;
    left: 20px;
    right: 20px;
    z-index: 2;
    color: #fff;
}

.hero-slide-content h2 {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 8px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.4);
}

.hero-slide-content p {
    font-size: 14px;
    color: rgba(255,255,255,0.85);
    margin-bottom: 16px;
}

.hero-slide-content .btn-hero {
    display: inline-block;
    padding: 10px 24px;
    background: var(--accent-gold);
    color: #fff;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
}

/* Hero 指示点 */
.hero-dots {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 3;
}

.hero-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    transition: all 0.3s ease;
}

.hero-dot.active {
    background: #fff;
    width: 20px;
    border-radius: 4px;
}

/* ===== 6. 快速入口（产品类别）===== */
.quick-entry {
    padding: var(--space-lg) 16px;
}

.quick-entry-title {
    font-size: 13px;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--space-md);
    padding-left: 4px;
}

.category-scroll {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
}

.category-scroll::-webkit-scrollbar { display: none; }

.category-pill {
    flex-shrink: 0;
    width: 80px;
    text-align: center;
}

.category-pill-img {
    width: 72px; height: 72px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin: 0 auto 8px;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.category-pill-img img {
    width: 100%; height: 100%;
    object-fit: cover;
}

.category-pill:hover .category-pill-img {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.category-pill-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-dark);
    white-space: nowrap;
}

/* ===== 7. 区块标题 ===== */
.section-header-mobile {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 16px 14px;
}

.section-header-mobile h2 {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-dark);
    position: relative;
    padding-left: 12px;
}

.section-header-mobile h2::before {
    content: '';
    position: absolute;
    left: 0; top: 4px;
    width: 4px; height: 20px;
    background: var(--accent-gold);
    border-radius: 2px;
}

.section-header-mobile .more-link {
    font-size: 13px;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ===== 8. 卡片通用 ===== */
.card-module {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    margin: 0 12px var(--space-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    padding: 20px 18px;
}

.card-module > h1,
.card-module > h3 {
    margin-top: 0;
}

.card-module > *:last-child {
    margin-bottom: 0;
}

/* ===== 9. 公司简介区 ===== */
.company-intro {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    color: #fff;
    padding: 28px 20px;
    margin: 0 12px var(--space-md);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.company-intro::before {
    content: '';
    position: absolute;
    top: -30%; right: -20%;
    width: 140px; height: 140px;
    border-radius: 50%;
    background: rgba(212,175,55,0.08);
}

.stats-highlight {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-bottom: 14px;
    position: relative; z-index: 1;
}

.stat-number.large {
    font-size: 56px;
    font-weight: 900;
    line-height: 1;
    color: var(--accent-gold-light);
}

.stat-label.accent {
    font-size: 14px;
    color: rgba(255,255,255,0.75);
    letter-spacing: 1px;
}

.company-desc {
    font-size: 14px;
    line-height: 1.9;
    color: rgba(255,255,255,0.85);
    position: relative; z-index: 1;
}

.company-desc a {
    color: var(--accent-gold-light);
    font-weight: 600;
    border-bottom: 1px dashed rgba(212,175,55,0.4);
}

/* ===== 10. 信任徽章 ===== */
.trust-badges-module {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    padding: 0 16px;
    margin-bottom: var(--space-lg);
}

.trust-badge {
    background: var(--bg-card);
    padding: 16px 8px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease;
}

.trust-badge:active {
    transform: scale(0.95);
}

.trust-badge i {
    font-size: 26px;
    color: var(--accent-gold);
    margin-bottom: 8px;
    display: block;
}

.trust-badge span {
    font-size: 12px;
    color: var(--text-body);
    font-weight: 500;
    line-height: 1.3;
}

/* ===== 11. 快速操作按钮 ===== */
.action-buttons {
    display: flex;
    gap: 12px;
    padding: 0 16px;
    margin-bottom: var(--space-lg);
}

.btn-module {
    flex: 1;
    display: block;
    padding: 14px 20px;
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.2s ease;
    border: none;
}

.btn-module.primary {
    background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-light));
    color: #fff;
    box-shadow: 0 4px 16px rgba(212,175,55,0.3);
}

.btn-module.primary:active {
    transform: scale(0.97);
    box-shadow: 0 2px 8px rgba(212,175,55,0.2);
}

.btn-module.outline {
    background: var(--bg-card);
    border: 1.5px solid var(--border-color);
    color: var(--text-dark);
}

.btn-module.outline:active {
    background: var(--bg-main);
}

/* ===== 12. 案例列表 ===== */
.list-module {
    margin-bottom: var(--space-lg);
}

.list-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md) 16px;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s ease;
}

.list-item:last-child { border-bottom: none; }
.list-item:active { background: var(--bg-main); }

.list-item-image {
    width: 96px; height: 96px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    flex-shrink: 0;
}

/* List item image wrapper (cases.php) */
.list-item .grid-item-image-wrapper {
    width: 120px;
    min-width: 120px;
    height: 90px;
    padding-top: 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.list-item .grid-item-image-wrapper img {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    object-fit: cover;
}

.list-item.with-image {
    display: flex;
    gap: 14px;
    align-items: stretch;
}

.list-item-content { flex: 1; min-width: 0; }

.list-item-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 6px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.list-item-meta {
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: 6px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.list-item-meta i {
    color: var(--accent-gold);
    margin-right: 3px;
}

.text-light.small {
    font-size: 13px;
    color: var(--text-light);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.5;
}

/* ===== 13. 特色网格（为什么选择我们）===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding: 0 16px var(--space-lg);
}

.feature-item {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 20px 14px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease;
}

.feature-item:active {
    transform: scale(0.97);
}

.feature-icon {
    width: 52px; height: 52px;
    border-radius: 50%;
    background: var(--accent-gold-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
}

.feature-icon i {
    font-size: 24px;
    color: var(--accent-gold);
}

.feature-content h3 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 6px;
}

.feature-content p {
    font-size: 12px;
    color: var(--text-light);
    line-height: 1.5;
}

/* ===== 14. 数据统计条 ===== */
.stats-module {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    margin: 0 12px var(--space-lg);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.stat-item {
    text-align: center;
    padding: 24px 10px;
    position: relative;
}

.stat-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0; top: 25%; bottom: 25%;
    width: 1px;
    background: var(--border-color);
}

.stat-number {
    font-size: 32px;
    font-weight: 900;
    color: var(--primary-color);
    line-height: 1.1;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 12px;
    color: var(--text-light);
    letter-spacing: 0.5px;
}

/* ===== 15. 新闻列表 ===== */
.news-list-item {
    display: flex;
    gap: var(--space-md);
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s ease;
}

.news-list-item:last-child { border-bottom: none; }
.news-list-item:active { background: var(--bg-main); }

.news-date-box {
    flex-shrink: 0;
    width: 56px; height: 64px;
    background: var(--primary-color);
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.news-date-box .day {
    font-size: 24px;
    font-weight: 900;
    line-height: 1;
}

.news-date-box .month {
    font-size: 11px;
    opacity: 0.7;
    margin-top: 2px;
}

.news-list-content { flex: 1; min-width: 0; }

.news-list-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 6px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-list-summary {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== 16. 产品网格（双列）===== */
.grid-module {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    padding: 0 16px var(--space-lg);
}

.grid-item {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.grid-item:active {
    transform: scale(0.97);
}

.grid-item-image-wrapper {
    position: relative;
    width: 100%;
    padding-top: 75%; /* 4:3 ratio */
    overflow: hidden;
    background: var(--bg-light);
}

.grid-item-image-wrapper img {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.grid-item:active .grid-item-image-wrapper img {
    transform: scale(1.05);
}

.grid-item-content {
    padding: 12px 14px 14px;
}

.grid-item-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 4px;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.grid-item-cat {
    font-size: 12px;
    color: var(--accent-gold);
    font-weight: 500;
}

.grid-item-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 6px;
    padding-top: 8px;
    border-top: 1px solid var(--border-color);
}

.grid-item-specs {
    font-size: 12px;
    color: var(--text-light);
}

.grid-item-price {
    font-size: 14px;
    color: var(--accent-gold);
    font-weight: 700;
}

/* ===== 17. 筛选标签 ===== */
.filter-module {
    display: flex;
    gap: 8px;
    padding: 0 16px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    margin-bottom: var(--space-md);
}

.filter-module::-webkit-scrollbar { display: none; }

.filter-tag {
    flex-shrink: 0;
    padding: 8px 18px;
    background: var(--bg-card);
    border: 1.5px solid var(--border-color);
    border-radius: 25px;
    font-size: 13px;
    color: var(--text-body);
    transition: all 0.2s ease;
}

.filter-tag.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

/* ===== 18. 分页 ===== */
.pagination-module {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    margin: var(--space-xl) 0;
    flex-wrap: wrap;
}

.page-link {
    padding: 8px 14px;
    background: var(--bg-card);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-body);
    font-size: 14px;
    transition: all 0.2s ease;
}

.page-link.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

.page-prev, .page-next {
    font-size: 13px;
    color: var(--text-body);
}

.page-prev i, .page-next i {
    font-size: 12px;
    margin: 0 3px;
}

/* ===== 19. 详情页 ===== */
.detail-image {
    width: 100%;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
    display: block;
}

/* Detail page image wrapper */
.detail-image-container {
    position: relative;
    width: calc(100% - 24px);
    margin: 0 auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.12);
}

.detail-image-container img {
    display: block;
    width: 100%;
    height: auto;
    max-height: 500px;
    object-fit: cover;
}

.product-title, .case-title {
    font-size: 22px;
    color: var(--text-dark);
    margin-bottom: 12px;
    font-weight: 800;
    line-height: 1.3;
}

.product-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: var(--space-md);
}

.tag-pill {
    padding: 5px 14px;
    background: var(--accent-gold-soft);
    color: var(--accent-gold);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

.product-desc {
    font-size: 15px;
    line-height: 1.9;
    color: var(--text-body);
}

.detail-list {
    list-style: none;
    margin-top: var(--space-md);
}

.detail-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
    color: var(--text-body);
    display: flex;
    justify-content: space-between;
}

.detail-list li i {
    color: var(--accent-gold);
    margin-right: 8px;
}

.price-tag {
    font-size: 28px;
    color: var(--accent-gold);
    font-weight: 900;
    margin: var(--space-md) 0;
}

/* ===== 20. 联系页面 ===== */
.contact-info-grid {
    display: grid;
    gap: 12px;
    padding: 0 16px var(--space-lg);
}

.contact-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: var(--shadow-sm);
}

.contact-card-icon {
    width: 48px; height: 48px;
    border-radius: 50%;
    background: var(--accent-gold-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-card-icon i {
    font-size: 20px;
    color: var(--accent-gold);
}

.contact-card-text h3 {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.contact-card-text p {
    font-size: 13px;
    color: var(--text-light);
}

/* ===== 21. 表单 ===== */
.form-group {
    margin-bottom: 16px;
    padding: 0 16px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.form-input, .form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 15px;
    color: var(--text-dark);
    background: var(--bg-card);
    transition: border-color 0.2s ease;
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--accent-gold);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
    font-family: inherit;
}

/* ===== 22. CTA 底部按钮（联系）===== */
.cta-bottom-bar {
    position: fixed;
    bottom: calc(64px + env(safe-area-inset-bottom));
    left: 0; right: 0;
    padding: 12px 16px;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    display: flex;
    gap: 10px;
    box-shadow: 0 -4px 20px rgba(0,0,0,0.08);
    z-index: 998;
}

.cta-bottom-bar .btn-module {
    flex: 1;
    padding: 12px;
    font-size: 14px;
    border-radius: var(--radius-sm);
}

/* ===== 23. 底部 Footer ===== */
.site-footer {
    text-align: center;
    margin-top: var(--space-xl);
    padding: 32px 20px;
    color: var(--text-light);
    font-size: 12px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-card);
}

.site-footer a {
    color: var(--primary-color);
    font-weight: 500;
}

/* ===== 24. 返回顶部 ===== */
.back-to-top {
    position: fixed;
    bottom: calc(80px + env(safe-area-inset-bottom));
    right: 16px;
    width: 44px; height: 44px;
    background: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 18px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 997;
    box-shadow: var(--shadow-md);
}

.back-to-top.show { display: flex; }

/* ===== 25. 页面标题栏 ===== */
.page-header-mobile {
    background: var(--bg-card);
    padding: 16px;
    margin-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.page-header-mobile h1 {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-dark);
    padding-left: 12px;
    position: relative;
}

.page-header-mobile h1::before {
    content: '';
    position: absolute;
    left: 0; top: 3px;
    width: 4px; height: 22px;
    background: var(--accent-gold);
    border-radius: 2px;
}

/* ===== 26. 面包屑 ===== */
.breadcrumb-mobile {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    font-size: 13px;
    color: var(--text-light);
}

.breadcrumb-mobile a { color: var(--primary-color); }
.breadcrumb-mobile .sep { color: var(--border-color); }

/* ===== 27. 动画 ===== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

.animate-in {
    animation: fadeInUp 0.4s ease both;
}

/* ===== 28. 通用间距工具 ===== */
.section-gap { padding-bottom: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

/* ===== 29. "查看更多"链接 ===== */
.more-link {
    display: block;
    text-align: center;
    padding: 16px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 14px;
}

.more-link i { margin-left: 4px; transition: transform 0.2s ease; }
.more-link:hover i { transform: translateX(4px); }

/* ===== 30. 电话大按钮 ===== */
.phone-cta-large {
    display: block;
    text-align: center;
    padding: 18px;
    margin: var(--space-lg) 16px;
    background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-light));
    color: #fff;
    border-radius: var(--radius-md);
    font-size: 18px;
    font-weight: 700;
    box-shadow: 0 6px 24px rgba(212,175,55,0.3);
}

.phone-cta-large i { margin-right: 8px; }

/* ===== 31. About 页面 ===== */
.about-hero-img {
    width: 100%; height: 200px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-md);
}

.about-text-block {
    padding: 0 16px;
    font-size: 15px;
    line-height: 2;
    color: var(--text-body);
    margin-bottom: var(--space-lg);
}

.culture-grid-mobile {
    display: grid;
    gap: 12px;
    padding: 0 16px var(--space-lg);
}

.culture-item-mobile {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 24px 18px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.culture-item-mobile i {
    font-size: 36px;
    color: var(--accent-gold);
    margin-bottom: 12px;
    display: block;
}

.culture-item-mobile h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.culture-item-mobile p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== 32. CTA 联系区块（首页底部）===== */
.cta-section-mobile {
    background: linear-gradient(160deg, var(--primary-dark), var(--primary-color));
    color: #fff;
    padding: 36px 24px;
    margin: 0 12px var(--space-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section-mobile::before {
    content: '';
    position: absolute;
    top: -40%; right: -25%;
    width: 160px; height: 160px;
    border-radius: 50%;
    background: rgba(212,175,55,0.08);
}

.cta-section-mobile h2 {
    font-size: 24px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 8px;
    position: relative; z-index: 1;
}

/* ===== 34. 页面标题（通用）===== */
.card-title {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: var(--space-md);
}

/* ===== 35. 联系信息卡片 ===== */
.contact-info {
    padding: 16px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 0;
    border-bottom: 1px solid var(--border-color);
}

.contact-item:last-child { border-bottom: none; }

.contact-icon {
    width: 44px; height: 44px;
    border-radius: 50%;
    background: var(--accent-gold-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 18px;
    color: var(--accent-gold);
}

.contact-detail { flex: 1; }

.contact-label {
    display: block;
    font-size: 12px;
    color: var(--text-light);
    margin-bottom: 4px;
}

.contact-value {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
}

/* ===== 36. 地图占位 ===== */
.map-placeholder {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    margin: 0 12px var(--space-lg);
    padding: 48px 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.map-placeholder i {
    font-size: 48px;
    color: var(--accent-gold);
    margin-bottom: 12px;
}

.map-placeholder p {
    font-size: 14px;
    color: var(--text-body);
    line-height: 1.6;
}

/* ===== 37. 按钮大尺寸 ===== */
.btn-large {
    display: block;
    text-align: center;
    padding: 18px 20px;
    margin: var(--space-lg) 16px;
    border-radius: var(--radius-md);
    font-size: 17px;
    font-weight: 700;
}

.btn-module.primary.btn-large {
    background: linear-gradient(135deg, var(--accent-gold), var(--accent-gold-light));
    color: #fff;
    box-shadow: 0 6px 24px rgba(212,175,55,0.3);
}

/* ===== 38. 段落内分类标签 ===== */
.inline-cat-tag {
    display: inline-block;
    padding: 2px 10px;
    margin: 0 2px;
    background: var(--accent-gold-soft);
    color: var(--accent-gold);
    border-radius: 4px;
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.inline-cat-tag:active {
    background: var(--accent-gold);
    color: #fff;
}

/* ===== 39. 响应式微调 ===== */
@media (max-width: 360px) {
    .hero-banner { height: 220px; }
    .hero-slide-content h2 { font-size: 22px; }
    .stat-number.large { font-size: 48px; }
    .trust-badges-module { grid-template-columns: repeat(2, 1fr); }
}

/* Lazy image placeholder */
.list-item-image-placeholder {
    width: 96px;
    height: 96px;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    overflow: hidden;
    position: relative;
}

.list-item-image-placeholder img.lazy-img {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.list-item-image-placeholder img.lazy-img.loaded {
    opacity: 1;
}

/* Skeleton loading animation */
@keyframes skeleton-loading {
    0% { background-position: -200px 0; }
    100% { background-position: calc(200px + 100%) 0; }
}

.list-item-image-placeholder.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200px 100%;
    animation: skeleton-loading 1.5s infinite;
}

/* Strength cards (about page) */
.strength-card {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 16px;
    text-align: center;
}

.strength-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.strength-icon .fa-icon {
    width: 24px;
    height: 24px;
    color: #fff;
}

.strength-card h3 {
    font-size: 15px;
    margin: 0 0 6px;
    color: var(--text-dark);
}

.strength-card p {
    font-size: 12px;
    margin: 0;
    color: #888;
    line-height: 1.5;
}