/* ═══════════════════════════════════════════
   应急通信企业官网 — 高端商务浅色主题
   ═══════════════════════════════════════════ */
:root {
    --color-primary: #0C2340;
    --color-primary-light: #1A3A5C;
    --color-accent: #B8975A;
    --color-accent-light: #D4B978;
    --color-bg: #FAFAF8;
    --color-bg-alt: #F3F1EC;
    --color-bg-card: #FFFFFF;
    --color-text: #2C3E50;
    --color-text-light: #6B7B8D;
    --color-border: #E8E4DC;
    --color-success: #2E7D5B;
    --font-serif: 'Noto Serif SC', 'Songti SC', serif;
    --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --shadow-sm: 0 2px 8px rgba(12, 35, 64, 0.06);
    --shadow-md: 0 8px 30px rgba(12, 35, 64, 0.08);
    --shadow-lg: 0 20px 60px rgba(12, 35, 64, 0.12);
    --radius: 4px;
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    color: var(--color-primary);
    font-weight: 600;
}

a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }

img { max-width: 100%; height: auto; }

/* ── 顶部信息栏 ── */
.top-bar {
    background: var(--color-primary);
    color: rgba(255,255,255,0.85);
    font-size: 0.82rem;
    padding: 8px 0;
    letter-spacing: 0.02em;
}
.top-bar i { color: var(--color-accent); margin-right: 4px; }
.top-link { color: rgba(255,255,255,0.85); }
.top-link:hover { color: var(--color-accent-light); }

.search-mini {
    display: flex;
    background: rgba(255,255,255,0.1);
    border-radius: 20px;
    overflow: hidden;
}
.search-mini input {
    background: transparent;
    border: none;
    color: #fff;
    padding: 4px 12px;
    font-size: 0.82rem;
    width: 160px;
    outline: none;
}
.search-mini input::placeholder { color: rgba(255,255,255,0.5); }
.search-mini button {
    background: var(--color-accent);
    border: none;
    color: #fff;
    padding: 6px 14px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    flex-shrink: 0;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    transition: background var(--transition);
}
.search-mini button:hover {
    background: var(--color-accent-light);
    color: #fff;
}
.search-mini button i {
    color: #fff;
    font-size: 0.95rem;
    line-height: 1;
}
.search-mini .search-btn-text {
    color: #fff;
    white-space: nowrap;
}

/* ── 导航栏 ── */
.main-nav {
    background: var(--color-bg-card);
    box-shadow: var(--shadow-sm);
    padding: 0;
    transition: all var(--transition);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.main-nav.scrolled {
    box-shadow: var(--shadow-md);
    padding: 0;
}
.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 0;
}
.brand-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    font-size: 1.3rem;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    color: var(--color-primary);
    letter-spacing: 0.05em;
}
.brand-text small {
    font-size: 0.72rem;
    color: var(--color-text-light);
    letter-spacing: 0.08em;
}

.main-nav .nav-link {
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.92rem;
    padding: 24px 18px !important;
    position: relative;
    letter-spacing: 0.03em;
}
.main-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 16px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: all var(--transition);
    transform: translateX(-50%);
}
.main-nav .nav-link:hover,
.main-nav .nav-link.active {
    color: var(--color-primary);
}
.main-nav .nav-link:hover::after,
.main-nav .nav-link.active::after {
    width: 24px;
}

/* ── 搜索弹窗 ── */
.search-overlay {
    position: fixed;
    inset: 0;
    background: rgba(12, 35, 64, 0.92);
    z-index: 9999;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 15vh;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
}
.search-overlay.active { opacity: 1; visibility: visible; }
.search-overlay-inner {
    width: 90%;
    max-width: 680px;
    position: relative;
}
.search-close {
    position: absolute;
    top: -50px;
    right: 0;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
}
.search-overlay h3 {
    color: #fff;
    font-family: var(--font-serif);
    margin-bottom: 24px;
}
.search-box-lg {
    display: flex;
    gap: 0;
}
.search-box-lg input {
    flex: 1;
    padding: 16px 24px;
    border: 2px solid var(--color-accent);
    border-right: none;
    background: rgba(255,255,255,0.08);
    color: #fff;
    font-size: 1.1rem;
    outline: none;
    border-radius: var(--radius) 0 0 var(--radius);
}
.search-box-lg input::placeholder { color: rgba(255,255,255,0.4); }
.search-box-lg button {
    padding: 16px 32px;
    background: var(--color-accent);
    border: 2px solid var(--color-accent);
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    border-radius: 0 var(--radius) var(--radius) 0;
    transition: background var(--transition);
}
.search-box-lg button:hover { background: var(--color-accent-light); }
.search-results { margin-top: 32px; }
.search-result-group { margin-bottom: 24px; }
.search-result-group h5 {
    color: var(--color-accent);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 12px;
}
.search-result-item {
    display: block;
    padding: 12px 16px;
    background: rgba(255,255,255,0.06);
    border-radius: var(--radius);
    color: #fff;
    margin-bottom: 8px;
    transition: background var(--transition);
}
.search-result-item:hover { background: rgba(255,255,255,0.12); color: #fff; }

/* ── 通用区块 ── */
.section { padding: 80px 0; }
.section-alt { background: var(--color-bg-alt); }
.section-header {
    text-align: center;
    margin-bottom: 56px;
}
.section-header .section-label {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 12px;
}
.section-header h2 {
    font-size: 2rem;
    margin-bottom: 16px;
    position: relative;
}
.section-header h2::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    background: var(--color-accent);
    margin: 16px auto 0;
}
.section-header p {
    color: var(--color-text-light);
    max-width: 560px;
    margin: 0 auto;
    font-size: 0.95rem;
}

/* ── 按钮 ── */
.btn-gold {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    color: #fff;
    border: none;
    padding: 12px 32px;
    font-weight: 600;
    letter-spacing: 0.05em;
    border-radius: var(--radius);
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn-gold:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(184, 151, 90, 0.35);
}
.btn-outline-gold {
    background: transparent;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
    padding: 10px 28px;
    font-weight: 600;
    letter-spacing: 0.05em;
    border-radius: var(--radius);
    transition: all var(--transition);
}
.btn-outline-gold:hover {
    background: var(--color-accent);
    color: #fff;
}

/* ── Hero 轮播 ── */
.hero-section {
    position: relative;
    height: 85vh;
    min-height: 520px;
    max-height: 780px;
    overflow: hidden;
    background: var(--color-primary);
}
.hero-slide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    opacity: 0;
    transition: opacity 1s ease;
    background-size: cover;
    background-position: center;
}
.hero-slide.active { opacity: 1; z-index: 1; }
.hero-slide::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(12,35,64,0.92) 0%, rgba(12,35,64,0.6) 50%, rgba(12,35,64,0.3) 100%);
}
.hero-slide .hero-content {
    position: relative;
    z-index: 2;
    color: #fff;
    max-width: 640px;
    padding: 0 24px;
}
.hero-content .hero-label {
    display: inline-block;
    font-size: 0.78rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 20px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s 0.3s forwards;
}
.hero-content h1 {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 5vw, 3.2rem);
    color: #fff;
    line-height: 1.3;
    margin-bottom: 20px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s 0.5s forwards;
}
.hero-content p {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.8);
    margin-bottom: 32px;
    line-height: 1.8;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s 0.7s forwards;
}
.hero-content .hero-actions {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s 0.9s forwards;
}
.hero-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}
.hero-dot {
    width: 40px;
    height: 3px;
    background: rgba(255,255,255,0.3);
    border: none;
    cursor: pointer;
    transition: all var(--transition);
}
.hero-dot.active { background: var(--color-accent); width: 56px; }

@keyframes fadeUp {
    to { opacity: 1; transform: translateY(0); }
}

/* ── 优势卡片 ── */
.advantage-card {
    background: var(--color-bg-card);
    padding: 40px 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition);
    border: 1px solid transparent;
    height: 100%;
}
.advantage-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}
.advantage-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    font-size: 1.5rem;
}
.advantage-card h4 {
    font-size: 1.15rem;
    margin-bottom: 12px;
}
.advantage-card p {
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin: 0;
}

/* ── 品牌展示 ── */
.brand-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
    transition: all var(--transition);
    height: 100%;
}
.brand-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}
.brand-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    color: #fff;
    font-size: 0.72rem;
    padding: 4px 12px;
    border-radius: 20px;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}
.brand-card h4 { font-size: 1.3rem; margin-bottom: 8px; }
.brand-card p { color: var(--color-text-light); font-size: 0.88rem; }

/* ── 产品卡片 ── */
.product-card {
    background: var(--color-bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
    color: inherit;
    text-decoration: none;
}
a.product-card:hover { color: inherit; }
.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.product-card-img {
    aspect-ratio: 4/3;
    background: var(--color-bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}
.product-card-img img {
    max-height: 85%;
    object-fit: contain;
    transition: transform var(--transition);
}
.product-card:hover .product-card-img img { transform: scale(1.05); }
.product-card-body {
    padding: 20px 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.product-card-tag {
    font-size: 0.72rem;
    color: var(--color-accent);
    letter-spacing: 0.05em;
    margin-bottom: 6px;
}
.product-card-body h5 {
    font-size: 1rem;
    margin-bottom: 8px;
}
.product-card-body p {
    color: var(--color-text-light);
    font-size: 0.85rem;
    flex: 1;
}
.product-card-link {
    margin-top: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-accent);
}

/* ── 新闻卡片 ── */
.news-card {
    background: var(--color-bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    height: 100%;
    color: inherit;
    text-decoration: none;
}
a.news-card:hover { color: inherit; }
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.news-card-img {
    height: 180px;
    background: var(--color-bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
}
.news-card-body { padding: 24px; }
.news-card-date {
    font-size: 0.78rem;
    color: var(--color-accent);
    letter-spacing: 0.05em;
}
.news-card-body h5 {
    font-size: 1rem;
    margin: 8px 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-card-body p {
    color: var(--color-text-light);
    font-size: 0.85rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ── 案例卡片 ── */
.case-card {
    background: var(--color-bg-card);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    border-left: 4px solid var(--color-accent);
    height: 100%;
    color: inherit;
    text-decoration: none;
}
a.case-card:hover { color: inherit; }
.case-card:hover { box-shadow: var(--shadow-md); }
.case-industry {
    font-size: 0.75rem;
    color: var(--color-accent);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}
.case-card h5 { margin: 8px 0 12px; font-size: 1.05rem; }
.case-card p { color: var(--color-text-light); font-size: 0.88rem; margin: 0; }

/* ── 页面 Banner ── */
.page-banner {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    padding: 80px 0 60px;
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(184,151,90,0.15) 0%, transparent 70%);
    border-radius: 50%;
}
.page-banner h1 {
    color: #fff;
    font-size: 2.2rem;
    position: relative;
}
.page-banner .breadcrumb {
    background: none;
    padding: 0;
    margin-top: 12px;
    position: relative;
}
.page-banner .breadcrumb-item,
.page-banner .breadcrumb-item a {
    color: rgba(255,255,255,0.6);
    font-size: 0.85rem;
}
.page-banner .breadcrumb-item.active { color: var(--color-accent); }
.page-banner .breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,0.3); }

/* ── 筛选栏 ── */
.filter-bar {
    background: var(--color-bg-card);
    padding: 20px 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: 32px;
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
}
.filter-bar select,
.filter-bar input {
    border: 1px solid var(--color-border);
    padding: 8px 16px;
    border-radius: var(--radius);
    font-size: 0.88rem;
    outline: none;
    transition: border-color var(--transition);
}
.filter-bar select:focus,
.filter-bar input:focus { border-color: var(--color-accent); }

/* ── 分页 ── */
.pagination-wrap {
    display: flex;
    justify-content: center;
    margin-top: 48px;
}
.pagination .page-link {
    color: var(--color-primary);
    background: #fff;
    border-color: var(--color-border);
    padding: 8px 16px;
    transition: all var(--transition);
}
.pagination .page-item.active .page-link {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
    font-weight: 600;
}
.pagination .page-item.active .page-link:hover,
.pagination .page-item.active .page-link:focus {
    background: var(--color-primary-light);
    border-color: var(--color-primary-light);
    color: #fff;
    box-shadow: none;
}
.pagination .page-link:hover {
    background: var(--color-bg-alt);
    color: var(--color-primary);
    border-color: var(--color-accent);
}
.pagination .page-item.disabled .page-link {
    color: var(--color-text-light);
    background: #fff;
}

/* ── 详情页 ── */
.detail-gallery {
    background: var(--color-bg-alt);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
}
.detail-gallery-main {
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: zoom-in;
}
.detail-gallery-main img { max-height: 100%; object-fit: contain; }
.detail-thumbs {
    display: flex;
    gap: 8px;
    margin-top: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.detail-thumb {
    width: 64px;
    height: 64px;
    border: 2px solid transparent;
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    transition: border-color var(--transition);
}
.detail-thumb.active,
.detail-thumb:hover { border-color: var(--color-accent); }
.detail-thumb img { max-height: 90%; object-fit: contain; }

.detail-info h1 { font-size: 1.8rem; margin-bottom: 8px; }
.detail-meta {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
    font-size: 0.88rem;
    color: var(--color-text-light);
}
.detail-meta span { display: flex; align-items: center; gap: 6px; }
.detail-desc {
    padding: 24px;
    background: var(--color-bg-alt);
    border-radius: var(--radius);
    margin-top: 32px;
}
.detail-desc h4 { font-size: 1.1rem; margin-bottom: 16px; }

.pdf-viewer-wrap {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    background: #f8f9fa;
}
.pdf-viewer-wrap iframe {
    width: 100%;
    height: min(720px, 80vh);
    border: none;
    display: block;
}
.pdf-section h4 i { color: var(--color-accent); margin-right: 8px; }

/* ── 联系表单 ── */
.contact-form {
    background: var(--color-bg-card);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
}
.contact-form .form-label {
    font-weight: 500;
    font-size: 0.88rem;
    color: var(--color-primary);
}
.contact-form .form-control {
    border: 1px solid var(--color-border);
    padding: 12px 16px;
    border-radius: var(--radius);
    transition: border-color var(--transition);
}
.contact-form .form-control:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(184, 151, 90, 0.15);
}
.contact-info-card {
    background: var(--color-primary);
    color: #fff;
    padding: 40px;
    border-radius: var(--radius);
    height: 100%;
}
.contact-info-card h4 { color: var(--color-accent); margin-bottom: 24px; }
.contact-info-item {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}
.contact-info-item i {
    color: var(--color-accent);
    font-size: 1.2rem;
    margin-top: 4px;
}
.contact-info-item strong { display: block; font-size: 0.82rem; color: rgba(255,255,255,0.6); }
.contact-info-item span { font-size: 1rem; }

/* ── 页脚（与全站象牙白 + 海军蓝 + 香槟金统一） ── */
.site-footer {
    margin-top: 0;
    position: relative;
    background: linear-gradient(
        180deg,
        var(--color-primary-light) 0%,
        var(--color-primary) 38%,
        #081a30 100%
    );
    color: rgba(255, 255, 255, 0.78);
}
/* 与正文区的柔和衔接：顶部细金线 + 浅色过渡带 */
.site-footer::before {
    content: '';
    display: block;
    height: 4px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--color-accent) 18%,
        var(--color-accent-light) 50%,
        var(--color-accent) 82%,
        transparent 100%
    );
}
.site-footer::after {
    content: '';
    position: absolute;
    top: -48px;
    left: 0;
    right: 0;
    height: 48px;
    pointer-events: none;
    background: linear-gradient(180deg, transparent 0%, rgba(12, 35, 64, 0.06) 100%);
}
.footer-main {
    background: transparent;
    color: rgba(255, 255, 255, 0.78);
    padding: 56px 0 40px;
    position: relative;
    z-index: 1;
}
.footer-main h4, .footer-main h5 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 20px;
    font-weight: 600;
    letter-spacing: 0.04em;
}
.footer-brand h4 {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    color: var(--color-accent-light);
}
.footer-brand p {
    color: rgba(255, 255, 255, 0.55);
    font-size: 0.88rem;
}
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 10px; }
.footer-links a {
    color: rgba(255, 255, 255, 0.68);
    font-size: 0.88rem;
    transition: color var(--transition);
}
.footer-links a:hover { color: var(--color-accent-light); }
.footer-contact p {
    font-size: 0.88rem;
    margin-bottom: 8px;
    color: rgba(255, 255, 255, 0.68);
}
.footer-contact i { color: var(--color-accent); margin-right: 8px; }
.wechat-qr {
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(184, 151, 90, 0.25);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.45);
    font-size: 0.78rem;
}
.wechat-qr i { font-size: 2rem; margin-bottom: 4px; color: var(--color-accent); }
.wechat-name { font-size: 0.82rem; margin-top: 8px; color: rgba(255, 255, 255, 0.55); }
.footer-partners a {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.78rem;
    margin-right: 16px;
}
.footer-partners a:hover { color: var(--color-accent-light); }
.footer-bottom {
    position: relative;
    z-index: 1;
    background: rgba(0, 0, 0, 0.22);
    border-top: 1px solid rgba(184, 151, 90, 0.2);
    padding: 18px 0;
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.52);
}
.footer-bottom p { margin: 0; }
.footer-bottom a {
    color: rgba(255, 255, 255, 0.52);
    transition: color var(--transition);
}
.footer-bottom a:hover { color: var(--color-accent-light); }

/* ── 悬浮联系栏 ── */
.float-contact {
    position: fixed;
    right: 20px;
    bottom: 80px;
    z-index: 900;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.float-item {
    width: 48px;
    height: 48px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 1rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    cursor: pointer;
    text-decoration: none;
}
.float-item span {
    font-size: 0.55rem;
    margin-top: 1px;
    display: none;
}
.float-item:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
    transform: scale(1.08);
}
.float-top {
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
}
.float-top.visible {
    opacity: 1;
    visibility: visible;
    background: var(--color-primary);
    color: var(--color-accent);
    border-color: rgba(184, 151, 90, 0.45);
}
.float-top.visible:hover {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}

/* ── Lightbox ── */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.9);
    z-index: 9998;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
}
.lightbox.active { opacity: 1; visibility: visible; }
.lightbox img { max-width: 90%; max-height: 90vh; object-fit: contain; }
.lightbox-close {
    position: absolute;
    top: 24px;
    right: 24px;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
}

/* ── 加载动画 ── */
.loading-spinner {
    display: flex;
    justify-content: center;
    padding: 60px 0;
}
.spinner-border { color: var(--color-accent); }

/* ── 服务卡片 ── */
.service-card {
    background: var(--color-bg-card);
    padding: 40px 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition);
    height: 100%;
    border-top: 3px solid transparent;
}
.service-card:hover {
    border-top-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.service-card i {
    font-size: 2.5rem;
    color: var(--color-accent);
    margin-bottom: 20px;
}
.service-card h4 { margin-bottom: 12px; }
.service-card p { color: var(--color-text-light); font-size: 0.9rem; }

/* ── 关于页 ── */
.about-content {
    background: var(--color-bg-card);
    padding: 48px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}
.about-content h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-accent);
    display: inline-block;
}
.about-section-image {
    margin: 0 0 28px;
    text-align: center;
}
.about-section-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}
.about-body img { max-width: 100%; height: auto; border-radius: 8px; }

/* ── 空状态 ── */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--color-text-light);
}
.empty-state i { font-size: 3rem; margin-bottom: 16px; opacity: 0.3; }

/* ── 响应式 ── */
@media (max-width: 991px) {
    .section { padding: 56px 0; }
    .hero-section { height: 70vh; min-height: 420px; }
    .main-nav .nav-link { padding: 12px 16px !important; }
    .contact-form, .contact-info-card { padding: 28px; }
    .about-content { padding: 28px; }
}
@media (max-width: 767px) {
    .hero-section { height: 60vh; min-height: 360px; }
    .section-header h2 { font-size: 1.6rem; }
    .detail-gallery-main { height: 280px; }
    .float-contact { right: 12px; bottom: 60px; }
    .float-item { width: 42px; height: 42px; font-size: 0.9rem; }
}