/* ===================================================
   PSP钢塑复合管 - 营销模板样式
   设计：现代化工业风格 | 响应式 | SEO/GEO/AI优化
   =================================================== */

/* ===== CSS Variables ===== */
:root {
    --primary: #003566;
    --primary-light: #00509d;
    --primary-dark: #001d3d;
    --accent: #e8610e;
    --accent-light: #ff7a2e;
    --accent-dark: #c04d00;
    --success: #38a169;
    --warning: #d69e2e;
    --danger: #e53e3e;
    --info: #3182ce;
    
    --bg-light: #f7f8fa;
    --bg-dark: #1a202c;
    --bg-card: #ffffff;
    
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #a0aec0;
    --text-light: #ffffff;
    --text-link: #003566;
    
    --border-color: #e2e8f0;
    --border-light: #f0f2f5;
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
    
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --container-width: 1200px;
    --header-height: 80px;
    --nav-height: 48px;
    --transition: all 0.3s ease;
}

/* ===== Reset ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    background: var(--bg-light);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--text-link);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--accent);
}

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

ul, ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
}

/* ===== Container ===== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Page Loader ===== */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.4s ease;
}

.page-loader.loaded {
    opacity: 0;
    pointer-events: none;
}

.loader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary);
    color: var(--text-light);
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-light);
    border-color: var(--primary-light);
    color: var(--text-light);
}

.btn-accent {
    background: var(--accent);
    color: var(--text-light);
    border-color: var(--accent);
}

.btn-accent:hover {
    background: var(--accent-light);
    border-color: var(--accent-light);
    color: var(--text-light);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--text-light);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.05rem;
    border-radius: var(--radius-lg);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

/* ===== Section ===== */
.section {
    padding: 60px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-title {
    font-size: 1.75rem;
    color: var(--primary);
    position: relative;
    display: inline-block;
    margin-bottom: 12px;
}

.section-title::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: var(--accent);
    margin: 12px auto 0;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: 8px;
}

/* ===== Top Bar ===== */
.top-bar {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.85);
    font-size: 0.85rem;
    height: 36px;
    line-height: 36px;
    display: none;
}

.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 6px;
}

.top-bar-right a {
    color: rgba(255,255,255,0.85);
    font-size: 0.82rem;
}

.top-bar-right a:hover {
    color: var(--accent);
}

.top-bar-right .sep {
    color: rgba(255,255,255,0.3);
    margin: 0 4px;
}

.lang-link .lang-icon {
    width: 16px;
    height: 16px;
    vertical-align: middle;
}

.lang-link.active {
    color: var(--accent);
}

/* ===== Header ===== */
.site-header {
    background: #fff;
    box-shadow: var(--shadow-sm);
    position: relative;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    gap: 20px;
}

.logo {
    flex-shrink: 0;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 48px;
    width: auto;
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
    display: none;
}

.header-slogan {
    flex: 1;
    padding: 0 20px;
    display: none;
}

.slogan-main {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary);
}

.slogan-accent {
    color: var(--accent);
}

.slogan-sub {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

.header-contact {
    flex-shrink: 0;
}

.hotline {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--accent);
}

.hotline i {
    font-size: 1.5rem;
}

.hotline-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.hotline-num {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent);
    display: block;
}

.hotline-num a {
    color: var(--accent);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== Navigation ===== */
.nav-bar {
    background: var(--primary);
    position: relative;
    z-index: 99;
}

.nav-main {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-height);
}

.nav-list {
    display: flex;
    gap: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: 0 20px;
    height: var(--nav-height);
    line-height: var(--nav-height);
    color: rgba(255,255,255,0.9);
    font-size: 0.95rem;
    font-weight: 500;
    white-space: nowrap;
    transition: var(--transition);
}

.nav-item:hover > .nav-link,
.nav-item.active > .nav-link {
    background: rgba(255,255,255,0.12);
    color: #fff;
}

/* Sub Navigation */
.sub-nav {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: #fff;
    box-shadow: var(--shadow-lg);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all 0.25s ease;
    z-index: 200;
}

.nav-item:hover > .sub-nav {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.sub-nav-item {
    position: relative;
}

.sub-nav-link {
    display: block;
    padding: 10px 20px;
    color: var(--text-primary);
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition);
}

.sub-nav-link:hover {
    background: var(--bg-light);
    color: var(--accent);
    padding-left: 24px;
}

/* Third Level */
.third-nav {
    position: absolute;
    top: 0;
    left: 100%;
    min-width: 200px;
    background: #fff;
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    opacity: 0;
    visibility: hidden;
    transform: translateX(8px);
    transition: all 0.25s ease;
}

.sub-nav-item:hover > .third-nav {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

/* Nav Search */
.nav-search {
    flex-shrink: 0;
}

.search-toggle {
    background: none;
    border: none;
    color: rgba(255,255,255,0.9);
    font-size: 1rem;
    padding: 0 16px;
    height: var(--nav-height);
    cursor: pointer;
    transition: var(--transition);
}

.search-toggle:hover {
    color: #fff;
    background: rgba(255,255,255,0.1);
}

/* ===== Search Popup ===== */
.search-popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.search-popup.active {
    opacity: 1;
    visibility: visible;
}

.search-popup-inner {
    width: 600px;
    max-width: 90%;
    position: relative;
}

.search-form {
    display: flex;
    gap: 0;
}

.search-input {
    flex: 1;
    height: 56px;
    padding: 0 24px;
    font-size: 1.1rem;
    border: 2px solid var(--accent);
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    background: #fff;
    outline: none;
}

.search-submit {
    width: 60px;
    height: 56px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-size: 1.2rem;
    cursor: pointer;
}

.search-close {
    position: absolute;
    top: -60px;
    right: 0;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
}

/* ===== Nav Overlay ===== */
.nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 90;
}

/* ===== Banner ===== */
.page-banner {
    position: relative;
    width: 100%;
    height: 360px;
    overflow: hidden;
    background: var(--primary-dark);
}

.page-banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ===== Banner Slider (Home) ===== */
.banner-slider {
    position: relative;
    width: 100%;
    height: 600px;
    overflow: hidden;
    background: var(--primary-dark);
}

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

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

.banner-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Banner overlay text */
.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,53,102,0.75) 0%, rgba(0,29,61,0.6) 100%);
    display: flex;
    align-items: center;
}

.banner-overlay-content {
    max-width: 640px;
    color: #fff;
}

.banner-overlay-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(232,97,14,0.2);
    color: var(--accent-light);
    border-radius: 20px;
    font-size: 0.88rem;
    margin-bottom: 20px;
    border: 1px solid rgba(232,97,14,0.3);
}

.banner-overlay-title {
    font-size: 2.6rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
}

.banner-overlay-desc {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.8);
    line-height: 1.7;
    margin-bottom: 28px;
}

.banner-overlay-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.banner-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
}

.banner-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.banner-dot.active {
    background: var(--accent);
    width: 28px;
    border-radius: 6px;
}

/* ===== Hero Section (Home) ===== */
.hero-section {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-dark) 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(232,97,14,0.08) 0%, transparent 70%);
}

.hero-inner {
    display: flex;
    align-items: center;
    gap: 60px;
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(232,97,14,0.15);
    color: var(--accent-light);
    border-radius: 20px;
    font-size: 0.85rem;
    margin-bottom: 20px;
    border: 1px solid rgba(232,97,14,0.3);
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 16px;
}

.hero-title span {
    color: var(--accent);
}

.hero-desc {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.8);
    line-height: 1.8;
    margin-bottom: 30px;
    max-width: 520px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 30px;
    margin-top: 40px;
}

.hero-stat {
    text-align: center;
}

.hero-stat-num {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent);
    display: block;
}

.hero-stat-label {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.6);
    margin-top: 4px;
}

.hero-image {
    flex: 0 0 400px;
    position: relative;
}

.hero-img-placeholder {
    width: 400px;
    height: 320px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255,255,255,0.1);
}

.hero-float-card {
    position: absolute;
    bottom: -10px;
    left: -20px;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    padding: 16px 20px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
}

.hero-float-card-icon {
    width: 40px;
    height: 40px;
    background: var(--success);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}

/* ===== Trust Bar ===== */
.trust-bar {
    background: #fff;
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
}

.trust-bar-inner {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.trust-item i {
    color: var(--success);
    font-size: 1rem;
}

.trust-num {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent);
    margin-right: 4px;
}

/* ===== Quick Entry ===== */
.quick-entry {
    margin-top: -40px;
    position: relative;
    z-index: 2;
}

.quick-entry-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.quick-entry-item {
    padding: 28px 20px;
    border-radius: var(--radius-lg);
    text-align: center;
    color: #fff;
    transition: var(--transition);
    cursor: pointer;
}

.quick-entry-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.quick-entry-icon {
    margin-bottom: 12px;
}

.quick-entry-icon i {
    font-size: 2rem;
}

.quick-entry-item h3 {
    font-size: 1.05rem;
    margin-bottom: 6px;
}

.quick-entry-item h3 a {
    color: #fff;
}

.quick-entry-item p {
    font-size: 0.82rem;
    opacity: 0.85;
}

/* ===== Products Overview (Home) ===== */
.product-categories {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.product-cat-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid var(--border-color);
}

.product-cat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.product-cat-icon {
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.product-cat-icon i {
    font-size: 1.8rem;
}

.product-cat-card h3 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.product-cat-card p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.product-cat-count {
    font-size: 0.78rem;
    color: var(--accent);
    background: rgba(232,97,14,0.08);
    padding: 2px 10px;
    border-radius: 10px;
}

/* ===== Advantages ===== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.adv-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.adv-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.adv-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.adv-icon i {
    font-size: 1.6rem;
}

.adv-card h3 {
    font-size: 1.05rem;
    margin-bottom: 10px;
    color: var(--primary);
}

.adv-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Product Grid ===== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.product-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.product-card-img {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    overflow: hidden;
}

.product-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-card-body {
    padding: 16px 20px 20px;
}

.product-card-title {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-card-specs {
    display: flex;
    gap: 6px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.product-card-spec {
    font-size: 0.75rem;
    padding: 2px 8px;
    background: var(--bg-light);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

.product-card-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.product-card-price {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent);
}

.product-card-link {
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 500;
}

.product-card-link:hover {
    color: var(--accent);
}

/* ===== About Section ===== */
.about-section {
    background: #fff;
}

.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-text {
    flex: 1;
}

.about-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 30px;
}

.stat-item {
    text-align: center;
    padding: 16px 8px;
    background: var(--bg-light);
    border-radius: var(--radius-md);
}

.stat-num {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent);
    display: block;
}

.stat-unit {
    font-size: 1rem;
    color: var(--accent);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: block;
    margin-top: 4px;
}

.about-image {
    flex: 0 0 420px;
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.about-cert-badge {
    position: absolute;
    bottom: -10px;
    right: -10px;
    background: #fff;
    padding: 10px 16px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--success);
}

/* ===== Case / Blog Grid ===== */
.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.case-card, .blog-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.case-card:hover, .blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.case-card-img, .blog-card-img {
    height: 200px;
    overflow: hidden;
}

.case-card-img img, .blog-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.case-card:hover .case-card-img img,
.blog-card:hover .blog-card-img img {
    transform: scale(1.05);
}

.case-card-body, .blog-card-body {
    padding: 20px;
}

.case-card-title, .blog-card-title {
    font-size: 1rem;
    margin-bottom: 8px;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.case-card-desc, .blog-card-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.case-card-date, .blog-card-date {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 12px;
}

/* ===== Cases Section (Home) ===== */
.cases-section {
    background: var(--bg-light);
}

.case-slider {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* ===== News List ===== */
.news-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.news-item {
    display: flex;
    gap: 20px;
    background: #fff;
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.news-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--accent);
}

.news-date {
    flex-shrink: 0;
    width: 70px;
    text-align: center;
    padding: 12px 0;
    background: var(--bg-light);
    border-radius: var(--radius-md);
}

.news-day {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent);
    display: block;
}

.news-month {
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.news-body {
    flex: 1;
}

.news-title {
    font-size: 1rem;
    margin-bottom: 6px;
}

.news-title a {
    color: var(--text-primary);
}

.news-title a:hover {
    color: var(--accent);
}

.news-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== FAQ ===== */
.faq-section {
    background: #fff;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    overflow: hidden;
}

.faq-q {
    width: 100%;
    padding: 16px 20px;
    background: var(--bg-light);
    border: none;
    text-align: left;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
}

.faq-q:hover {
    background: #eef0f3;
}

.faq-q-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.78rem;
    flex-shrink: 0;
}

.faq-a {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-a {
    padding: 16px 20px;
    max-height: 500px;
}

.faq-a p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Partners ===== */
.partners-section {
    background: var(--bg-light);
}

.partner-track {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.partner-item {
    padding: 12px 24px;
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition);
}

.partner-item:hover {
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    padding: 12px 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: var(--bg-light);
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb a {
    color: var(--text-secondary);
}

.breadcrumb a:hover {
    color: var(--accent);
}

.breadcrumb .sep {
    margin: 0 8px;
    color: var(--text-muted);
}

.breadcrumb .active {
    color: var(--accent);
}

/* ===== Page Layout ===== */
.page-wrap {
    display: flex;
    gap: 30px;
    padding: 40px 0;
}

.page-main {
    flex: 1;
    min-width: 0;
}

.page-sidebar {
    flex: 0 0 300px;
}

/* ===== Sidebar ===== */
.sidebar-box {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.sidebar-title {
    font-size: 1.1rem;
    color: var(--primary);
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 16px;
    position: relative;
}

.sidebar-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--accent);
}

.sidebar-links {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.sidebar-links li a {
    display: block;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.sidebar-links li a:hover {
    color: var(--accent);
    padding-left: 6px;
}

.sidebar-links li.active a {
    color: var(--accent);
    font-weight: 600;
}

.sidebar-contact p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 2;
}

.sidebar-contact i {
    color: var(--accent);
    margin-right: 6px;
    width: 16px;
}

.sidebar-contact .sidebar-phone {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent);
}

/* ===== Product List Page ===== */
.product-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 12px 16px;
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.product-count {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.product-count strong {
    color: var(--accent);
}

/* ===== Product Detail ===== */
.product-detail {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.product-detail-header {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
}

.product-detail-gallery {
    flex: 0 0 400px;
}

.product-detail-image {
    width: 100%;
    height: 360px;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--bg-light);
}

.product-detail-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-detail-info {
    flex: 1;
}

.product-detail-title {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.product-detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 16px;
    padding: 12px 0;
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}

.product-detail-meta span {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.product-detail-meta span strong {
    color: var(--text-primary);
}

.product-detail-price {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 16px;
}

.product-detail-desc {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.product-detail-actions {
    display: flex;
    gap: 12px;
}

.product-detail-content {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.product-detail-content h3 {
    font-size: 1.2rem;
    color: var(--primary);
    margin-bottom: 16px;
}

.product-detail-content .content-body {
    font-size: 0.95rem;
    line-height: 1.9;
    color: var(--text-secondary);
}

.product-detail-content .content-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
}

.product-detail-content .content-body th,
.product-detail-content .content-body td {
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    text-align: left;
    font-size: 0.88rem;
}

.product-detail-content .content-body th {
    background: var(--bg-light);
    font-weight: 600;
    color: var(--text-primary);
}

/* ===== Article Detail ===== */
.article-detail {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.article-detail-title {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.article-detail-meta {
    display: flex;
    gap: 16px;
    color: var(--text-muted);
    font-size: 0.85rem;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.article-detail-meta span i {
    margin-right: 4px;
}

.article-detail-body {
    font-size: 0.95rem;
    line-height: 2;
    color: var(--text-secondary);
}

.article-detail-body p {
    margin-bottom: 16px;
}

.article-detail-body img {
    max-width: 100%;
    border-radius: var(--radius-md);
    margin: 16px 0;
}

.article-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.article-nav a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    max-width: 45%;
}

.article-nav a:hover {
    color: var(--accent);
}

/* ===== Tags ===== */
.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.tag-item {
    padding: 4px 12px;
    background: var(--bg-light);
    border-radius: 14px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.tag-item:hover {
    background: var(--accent);
    color: #fff;
}

/* ===== Pagination ===== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    margin-top: 30px;
}

.pagination a, .pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    color: var(--text-secondary);
    background: #fff;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.pagination a:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.pagination .active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.pagination .disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ===== Guestbook ===== */
.guestbook-form {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    max-width: 700px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-group label .required {
    color: var(--danger);
}

.form-control {
    width: 100%;
    height: 44px;
    padding: 0 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: var(--transition);
    outline: none;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0,53,102,0.1);
}

textarea.form-control {
    height: 120px;
    padding: 12px 14px;
    resize: vertical;
}

.form-control.error {
    border-color: var(--danger);
}

.form-error {
    font-size: 0.8rem;
    color: var(--danger);
    margin-top: 4px;
}

.form-submit {
    width: 100%;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,0.8);
}

.footer-main {
    padding: 50px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr 1fr;
    gap: 30px;
}

.footer-logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}

.footer-about-text p {
    font-size: 0.85rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.6);
    margin-bottom: 16px;
}

.footer-social {
    display: flex;
    gap: 10px;
}

.footer-social a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.6);
    font-size: 1rem;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--accent);
    color: #fff;
}

.footer-title {
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 16px;
    position: relative;
    padding-bottom: 10px;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--accent);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.footer-links li a {
    display: block;
    padding: 6px 0;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}

.footer-links li a:hover {
    color: var(--accent);
    padding-left: 4px;
}

.footer-contact-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-contact-list li {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
    display: flex;
    align-items: baseline;
    gap: 6px;
}

.contact-label {
    color: rgba(255,255,255,0.4);
    flex-shrink: 0;
}

.footer-contact-list a {
    color: rgba(255,255,255,0.6);
}

.footer-contact-list a:hover {
    color: var(--accent);
}

.footer-qr {
    display: flex;
    gap: 16px;
}

.qr-item {
    text-align: center;
}

.qr-img {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-md);
    border: 2px solid rgba(255,255,255,0.1);
}

.qr-label {
    font-size: 0.78rem;
    color: rgba(255,255,255,0.5);
    margin-top: 6px;
}

/* Footer Bottom */
.footer-bottom {
    background: rgba(0,0,0,0.3);
    padding: 16px 0;
}

.footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.footer-copyright p {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.5);
}

.footer-copyright a {
    color: rgba(255,255,255,0.6);
}

.footer-copyright a:hover {
    color: var(--accent);
}

.footer-icp a {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.4);
}

.footer-icp a:hover {
    color: var(--accent);
}

.footer-icp .sep {
    color: rgba(255,255,255,0.2);
    margin: 0 8px;
}

/* ===== Mobile Footer Bar ===== */
.mobile-footer-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: #fff;
    border-top: 1px solid var(--border-color);
    z-index: 999;
    padding: 6px 0;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.08);
}

.mobile-footer-bar a {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    color: var(--text-secondary);
    font-size: 0.7rem;
}

.mobile-footer-bar a i {
    font-size: 1.1rem;
}

.mobile-footer-bar a:hover {
    color: var(--accent);
}

/* ===== Float Bar ===== */
.float-bar {
    position: fixed;
    right: 16px;
    bottom: 100px;
    z-index: 998;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.float-item {
    width: 44px;
    height: 44px;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.float-item i {
    font-size: 1.1rem;
}

.float-item:hover {
    background: var(--accent);
    color: #fff;
}

.float-label {
    display: none;
}

.float-wechat-popup {
    position: absolute;
    right: 60px;
    top: 50%;
    transform: translateY(-50%);
    background: #fff;
    border-radius: var(--radius-md);
    padding: 16px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    width: 150px;
}

.float-wechat:hover .float-wechat-popup {
    opacity: 1;
    visibility: visible;
}

.float-wechat-popup img {
    width: 120px;
    height: 120px;
}

.float-wechat-popup p {
    font-size: 0.78rem;
    color: var(--text-secondary);
    text-align: center;
    margin-top: 6px;
}

/* ===== WeChat Modal ===== */
.wechat-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

.wechat-modal.show {
    display: flex;
}

.wechat-modal-content {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
    max-width: 320px;
    position: relative;
}

.wechat-modal-close {
    position: absolute;
    top: 10px;
    right: 16px;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
}

.wechat-modal-content h4 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--primary);
}

.wechat-modal-content img {
    width: 180px;
    height: 180px;
    margin: 0 auto;
}

.wechat-modal-content p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 12px;
}

/* ===== Friend Links ===== */
.friend-links {
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
    margin-top: 30px;
}

.friend-links-title {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.friend-links-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.friend-links-list a {
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* ===== Error Pages ===== */
.error-page {
    text-align: center;
    padding: 100px 20px;
}

.error-code {
    font-size: 6rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.error-message {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin: 16px 0 30px;
}

/* ===== Tag Cloud ===== */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag-cloud a {
    padding: 6px 16px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.tag-cloud a:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

/* ===== Search Page ===== */
.search-result-item {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.search-result-item:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-sm);
}

.search-result-title {
    font-size: 1.05rem;
    margin-bottom: 8px;
}

.search-result-title a {
    color: var(--primary);
}

.search-result-title a:hover {
    color: var(--accent);
}

.search-result-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.search-result-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 8px;
}

.search-highlight {
    color: var(--accent);
    font-weight: 600;
}

/* ===== 响应式 ===== */

/* Tablets */
@media (max-width: 1024px) {
    .header-slogan { display: none; }
    .product-categories { grid-template-columns: repeat(3, 1fr); }
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .product-grid { grid-template-columns: repeat(3, 1fr); }
    .case-slider { grid-template-columns: repeat(2, 1fr); }
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .quick-entry-grid { grid-template-columns: repeat(2, 1fr); }
    .about-content { flex-direction: column; }
    .about-image { flex: 1; width: 100%; }
    .hero-image { display: none; }
    .hero-stats { justify-content: center; }
    .product-detail-header { flex-direction: column; }
    .product-detail-gallery { flex: 1; }
    .page-wrap { flex-direction: column; }
    .page-sidebar { flex: 1; }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --header-height: 60px;
        --nav-height: 44px;
    }

    .top-bar { display: none; }
    .header-slogan { display: none; }
    .header-contact { display: none; }

    .mobile-toggle {
        display: flex;
    }

    .logo-img {
        height: 50px;
    }

    .nav-bar {
        position: fixed;
        top: 0;
        right: -280px;
        width: 280px;
        height: 100%;
        background: #fff;
        z-index: 100;
        transition: right 0.3s ease;
        box-shadow: -4px 0 20px rgba(0,0,0,0.15);
    }

    .nav-bar.open {
        right: 0;
    }

    .nav-main {
        flex-direction: column;
        height: auto;
        padding-top: 60px;
    }

    .nav-list {
        flex-direction: column;
        width: 100%;
    }

    .nav-link {
        color: var(--text-primary);
        height: auto;
        line-height: 1.4;
        padding: 12px 20px;
        border-bottom: 1px solid var(--border-light);
    }

    .nav-item > .nav-link {
        color: var(--text-primary);
    }

    .nav-item:hover > .nav-link {
        background: var(--bg-light);
        color: var(--accent);
    }

    .sub-nav {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border-radius: 0;
        display: none;
        background: var(--bg-light);
    }

    .nav-item.open > .sub-nav {
        display: block;
    }

    .third-nav {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        display: none;
        background: #f5f6f8;
    }

    .sub-nav-item.open > .third-nav {
        display: block;
    }

    .nav-search {
        display: none;
    }

    .nav-overlay.show {
        display: block;
    }

    .hero-section {
        padding: 40px 0;
    }

    .hero-title {
        font-size: 1.6rem;
    }

    .hero-desc {
        font-size: 0.9rem;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 16px;
    }

    .section {
        padding: 40px 0;
    }

    .section-title {
        font-size: 1.3rem;
    }

    .product-categories {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .advantages-grid {
        grid-template-columns: 1fr;
    }

    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .case-slider {
        grid-template-columns: 1fr;
    }

    .blog-grid {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    .footer-about-col { grid-column: 1 / -1; }
    .footer-contact-col { grid-column: 1 / -1; }
    .footer-qr-col { grid-column: 1 / -1; }
    .footer-contact-col .footer-contact-list {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px 20px;
    }

    .quick-entry-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .quick-entry-item {
        padding: 20px 16px;
    }

    .page-banner {
        height: 200px;
    }

    .banner-slider {
        height: 360px;
    }
    .banner-overlay-title {
        font-size: 1.6rem;
    }
    .banner-overlay-desc {
        font-size: 0.9rem;
    }
    .banner-overlay-badge {
        font-size: 0.78rem;
    }

    .news-item {
        flex-direction: column;
        gap: 12px;
    }

    .news-date {
        width: 100%;
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 8px 12px;
    }

    .news-day {
        font-size: 1.2rem;
    }

    .product-detail {
        padding: 16px;
    }

    .product-detail-title {
        font-size: 1.2rem;
    }

    .product-card-img {
        height: 140px;
    }

    .case-card-img, .blog-card-img {
        height: 160px;
    }

    .trust-bar-inner {
        gap: 16px;
    }

    .trust-item {
        font-size: 0.8rem;
    }

    .float-bar {
        right: 8px;
        bottom: 70px;
    }

    .float-item {
        width: 38px;
        height: 38px;
    }

    .mobile-footer-bar {
        display: flex;
    }

    .footer-bottom-inner {
        flex-direction: column;
        text-align: center;
    }

    .search-popup-inner {
        width: 90%;
    }

    .search-input {
        height: 48px;
        font-size: 0.95rem;
    }

    .search-submit {
        height: 48px;
    }

    .container {
        padding: 0 12px;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .product-categories {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }

    .product-cat-card {
        padding: 16px 12px;
    }



    .product-cat-icon i {
        font-size: 1.4rem;
    }

    .product-cat-card h3 {
        font-size: 0.88rem;
    }

    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .product-card-img {
        height: 120px;
    }

    .product-card-body {
        padding: 12px;
    }

    .product-card-title {
        font-size: 0.88rem;
    }

    .quick-entry-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ===== Print ===== */
@media print {
    .top-bar,
    .nav-bar,
    .float-bar,
    .mobile-footer-bar,
    .search-popup,
    .nav-overlay,
    .footer-social,
    .wechat-modal { display: none !important; }

    .site-header {
        box-shadow: none;
    }
}