/* ============================================================
   苏州施米特机械有限公司 - 城市分站系统
   工业科技风 - 响应式样式表
   ============================================================ */

/* CSS 变量 */
:root {
    --primary: #229093;
    --primary-light: #3aa8ab;
    --primary-dark: #1a6e70;
    --accent: #ff6b35;
    --gold: #d4a853;
    --bg-white: #ffffff;
    --bg-gray: #f5f7fa;
    --bg-dark: #0d2b2c;
    --bg-darker: #081f20;
    --text-primary: #1a1a25;
    --text-secondary: #555;
    --text-muted: #999;
    --text-light: #ccc;
    --border: #e5e7eb;
    --border-light: #f0f0f0;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --transition: all 0.3s ease;
    --card: var(--bg-white);
    --bg: var(--bg-gray);
    --warning-bg: #fff8e6;
    --warning-light: #ffe082;
    --warning-text: #8d6e00;
    --text-on-primary: #fff;
    --container-width: 1200px;
}

/* 重置 */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-primary);
    background: var(--bg-white);
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
a:hover { color: var(--primary-light); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-primary); }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; }

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

/* 通用按钮 */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: #fff;
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(34,144,147,0.3);
}
.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-outline:hover {
    background: var(--primary);
    color: #fff;
}
.btn-gold {
    background: linear-gradient(135deg, var(--gold), #c49a47);
    color: #fff;
}
.btn-sm { padding: 8px 20px; font-size: 14px; }

/* 区块 */
.section { padding: 80px 0; }
.section-gray { background: var(--bg-gray); }
.section-title {
    text-align: center;
    margin-bottom: 50px;
}
.section-title.text-left { text-align: left; margin-bottom: 30px; }
.section-title .label {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--primary-light);
    text-transform: uppercase;
    margin-bottom: 12px;
    position: relative;
    padding: 0 30px;
}
.section-title .label::before,
.section-title .label::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 20px;
    height: 2px;
    background: var(--primary-light);
}
.section-title .label::before { left: 0; }
.section-title .label::after { right: 0; }
.section-title h2 {
    font-size: 32px;
    margin-bottom: 12px;
}
.section-title p {
    color: var(--text-secondary);
    font-size: 15px;
}

/* 顶部信息栏 */
.top-bar {
    background: var(--primary-dark);
    color: rgba(255,255,255,0.85);
    font-size: 13px;
    padding: 8px 0;
}
.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.top-bar-right { display: flex; gap: 24px; }
.top-bar-item {
    display: flex;
    align-items: center;
    gap: 6px;
}
.top-bar-item svg { width: 14px; height: 14px; }

/* 头部导航 */
.header {
    background: var(--bg-white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}
.header.scrolled {
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo-img { height: 44px; width: auto; display: block; }
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-cn { font-size: 20px; font-weight: 800; color: var(--primary); }
.logo-en { font-size: 11px; font-weight: 600; color: var(--text-muted); letter-spacing: 2px; }

.nav { display: flex; gap: 4px; }
.nav a {
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    border-radius: 6px;
    position: relative;
}
.nav a:hover, .nav a.active {
    color: var(--primary-light);
    background: rgba(58,168,171,0.06);
}
.nav a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 3px;
    background: var(--primary-light);
    border-radius: 2px;
}

.header-cta { display: flex; align-items: center; gap: 16px; }
.header-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 700;
    font-size: 16px;
}
.header-phone svg { width: 20px; height: 20px; }

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}
.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Hero 区域 */
.hero {
    position: relative;
    min-height: 560px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
}
.hero > .container { width: 100%; }
.hero-default::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(255,107,53,0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(212,168,83,0.1) 0%, transparent 40%);
}
.hero-bg-pattern {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}
.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    color: #fff;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.12);
    backdrop-filter: blur(10px);
    padding: 8px 18px;
    border-radius: 30px;
    font-size: 14px;
    margin-bottom: 24px;
    border: 1px solid rgba(255,255,255,0.2);
}
.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}
.hero h1 {
    font-size: 42px;
    line-height: 1.3;
    margin-bottom: 20px;
    color: #fff;
}
.hero h1 .highlight { color: var(--gold); }
.hero-subtitle {
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255,255,255,0.85);
    margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero .btn-outline {
    color: #fff;
    border-color: rgba(255,255,255,0.5);
}
.hero .btn-outline:hover {
    background: var(--bg-white);
    color: var(--primary);
}

/* Hero 轮播 */
.hero-slider { min-height: 560px; }
.hero-slider-container {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
}
.hero-slide {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    opacity: 0;
    transition: opacity 0.8s ease;
}
.hero-slide.active { opacity: 1; }
.hero-slide-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.hero-slide-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(90deg, rgba(26,110,112,0.85) 0%, rgba(34,144,147,0.6) 50%, rgba(34,144,147,0.3) 100%);
}
.hero-slider-content {
    position: relative;
    z-index: 2;
    width: 100%;
}
.hero-slider-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 3;
}
.hero-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    cursor: pointer;
    transition: var(--transition);
}
.hero-dot.active {
    background: var(--gold);
    width: 32px;
    border-radius: 6px;
}
.hero-slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(10px);
    color: #fff;
    font-size: 24px;
    z-index: 3;
    transition: var(--transition);
}
.hero-slider-arrow:hover { background: rgba(255,255,255,0.3); }
.hero-arrow-prev { left: 30px; }
.hero-arrow-next { right: 30px; }

/* 数据统计条 */
.stats-bar {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    padding: 40px 0;
    margin-top: -1px;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.stat-item {
    text-align: center;
    color: #fff;
}
.stat-item .num {
    font-size: 42px;
    font-weight: 800;
    color: var(--gold);
    line-height: 1;
    margin-bottom: 8px;
}
.stat-item .num small { font-size: 20px; }
.stat-item .label {
    font-size: 14px;
    color: rgba(255,255,255,0.8);
}

/* 产品分类卡片 */
.cat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.cat-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 30px 24px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.cat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-light), var(--accent));
    transform: scaleX(0);
    transition: var(--transition);
}
.cat-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.cat-card:hover::before { transform: scaleX(1); }
.cat-icon {
    font-size: 40px;
    margin-bottom: 16px;
}
.cat-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--primary);
}
.cat-card p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}
.cat-product-list {
    margin-bottom: 16px;
}
.cat-product-list li {
    padding: 6px 0;
    font-size: 13px;
    color: var(--text-secondary);
    border-bottom: 1px dashed var(--border-light);
}
.cat-product-list li:last-child { border-bottom: none; }
.cat-product-list a:hover { color: var(--primary-light); }
.cat-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-light);
}
.cat-more span { transition: var(--transition); }
.cat-card:hover .cat-more span { transform: translateX(4px); }

/* 关于我们 */
.about-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about-content p {
    margin-bottom: 16px;
    color: var(--text-secondary);
    line-height: 1.9;
}
.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin: 24px 0 32px;
}
.feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
}
.feature-icon {
    width: 24px;
    height: 24px;
    background: var(--primary-light);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}
.about-visual { position: relative; }
.about-img-box {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.about-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 4/3;
    display: block;
}
.about-img-placeholder {
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
}
.about-img-placeholder svg { width: 60%; height: 60%; }
.about-experience {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 24px 32px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 16px;
}
.exp-num {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}
.exp-text {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* 核心优势 */
.adv-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.adv-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    transition: var(--transition);
    position: relative;
}
.adv-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}
.adv-num {
    position: absolute;
    top: 20px;
    right: 24px;
    font-size: 48px;
    font-weight: 800;
    color: var(--border-light);
    line-height: 1;
}
.adv-icon {
    font-size: 36px;
    margin-bottom: 16px;
}
.adv-card h3 {
    font-size: 17px;
    margin-bottom: 12px;
    color: var(--primary);
}
.adv-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 产品网格 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.product-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: block;
}
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.product-img {
    position: relative;
    aspect-ratio: 4/3;
    background: var(--bg-gray);
    overflow: hidden;
}
.product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.product-card:hover .product-img img { transform: scale(1.08); }
.product-img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    background: linear-gradient(135deg, #f0f4f8, #e2e8f0);
}
.product-img-placeholder.large { font-size: 64px; flex-direction: column; gap: 12px; }
.product-img-placeholder.large p { font-size: 14px; color: var(--text-muted); }
.product-cat-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(34,144,147,0.9);
    color: #fff;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}
.product-body { padding: 20px; }
.product-body h3 {
    font-size: 16px;
    margin-bottom: 8px;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.product-body p {
    font-size: 13px;
    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-more {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary-light);
}

/* 应用领域 */
.industry-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.industry-item {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    transition: var(--transition);
}
.industry-item:hover {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-color: transparent;
    transform: translateY(-4px);
}
.industry-item:hover h4,
.industry-item:hover p { color: #fff; }
.industry-icon {
    font-size: 48px;
    margin-bottom: 16px;
}
.industry-item h4 {
    font-size: 18px;
    margin-bottom: 8px;
    transition: var(--transition);
}
.industry-item p {
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}

/* 合作客户 */
.client-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.client-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px 20px;
    text-align: center;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
}
.client-card:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 16px rgba(34,144,147,0.15);
    transform: translateY(-3px);
}
.client-logo {
    width: 100%;
    aspect-ratio: 2 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
}
.client-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: grayscale(30%);
    transition: var(--transition);
}
.client-card:hover .client-logo img {
    filter: grayscale(0%);
}
.client-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
}

/* 资讯卡片 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.news-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: block;
}
.news-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.news-list-img {
    aspect-ratio: 16/10;
    background: var(--bg-gray);
    overflow: hidden;
}
.news-list-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.news-card:hover .news-list-img img { transform: scale(1.08); }
.news-img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    background: linear-gradient(135deg, #f0f4f8, #e2e8f0);
}
.news-body { padding: 20px; }
.news-date {
    padding: 16px 20px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    text-align: center;
}
.news-date .day {
    display: block;
    font-size: 32px;
    font-weight: 700;
    line-height: 1.2;
}
.news-date .month {
    display: block;
    font-size: 12px;
    opacity: 0.85;
    margin-top: 2px;
    letter-spacing: 1px;
}
.news-card.no-img { display: flex; align-items: stretch; }
.news-card.no-img .news-body { padding: 24px; display: flex; flex-direction: column; justify-content: center; width: 100%; }
.news-card.no-img .news-body h3 { font-size: 17px; margin-bottom: 12px; }
.news-cat {
    display: inline-block;
    background: rgba(58,168,171,0.1);
    color: var(--primary-light);
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 10px;
}
.news-body h3 {
    font-size: 16px;
    margin-bottom: 8px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-body p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-more {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary-light);
}

/* CTA 区域 */
.cta-section {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,107,53,0.2) 0%, transparent 70%);
    border-radius: 50%;
}
.cta-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
    position: relative;
    z-index: 2;
}
.cta-text h2 {
    color: #fff;
    font-size: 28px;
    margin-bottom: 8px;
}
.cta-text p {
    color: rgba(255,255,255,0.8);
    font-size: 15px;
}
.cta-actions {
    display: flex;
    align-items: center;
    gap: 24px;
    flex-shrink: 0;
}
.cta-phone-box {
    text-align: right;
}
.cta-label {
    display: block;
    font-size: 13px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 4px;
}
.cta-number {
    font-size: 26px;
    font-weight: 800;
    color: var(--gold);
}

/* 页脚 */
.footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,0.7);
    padding: 60px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-logo {
    display: flex;
    flex-direction: column;
    margin-bottom: 16px;
}
.footer-logo-cn {
    font-size: 22px;
    font-weight: 800;
    color: #fff;
}
.footer-logo-en {
    font-size: 12px;
    color: var(--gold);
    letter-spacing: 2px;
}
.footer-desc {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 20px;
    color: rgba(255,255,255,0.6);
}
.footer-contact-list { display: flex; flex-direction: column; gap: 10px; }
.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}
.footer-contact-item svg { width: 16px; height: 16px; flex-shrink: 0; color: var(--gold); }
.footer-col h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}
.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--gold);
}
.footer-col ul li {
    padding: 6px 0;
    font-size: 14px;
}
.footer-col ul li a {
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}
.footer-col ul li a:hover {
    color: var(--gold);
    padding-left: 4px;
}
.footer-cities {
    padding: 30px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-cities h4 {
    color: #fff;
    font-size: 15px;
    margin-bottom: 16px;
}
.footer-cities-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
}
.footer-cities-list a {
    font-size: 13px;
    color: rgba(255,255,255,0.5);
    transition: var(--transition);
}
.footer-cities-list a:hover { color: var(--gold); }
.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}
.footer-bottom p { margin-bottom: 6px; }
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--gold); }
.footer-tech { color: rgba(255,255,255,0.35); }

/* 页面横幅 */
.page-banner {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    padding: 60px 0;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255,107,53,0.15) 0%, transparent 70%);
    border-radius: 50%;
}
.breadcrumb {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 16px;
}
.breadcrumb a { color: rgba(255,255,255,0.7); }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb span { color: var(--gold); }
.page-banner h1 {
    color: #fff;
    font-size: 32px;
    margin-bottom: 8px;
}
.page-banner p {
    color: rgba(255,255,255,0.8);
    font-size: 15px;
}

/* 分类筛选 */
.cat-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 36px;
    justify-content: center;
}
.cat-filter a {
    padding: 8px 22px;
    border: 1px solid var(--border);
    border-radius: 30px;
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}
.cat-filter a:hover, .cat-filter a.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 40px;
}
.pagination a, .pagination span {
    min-width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    color: var(--text-secondary);
    padding: 0 10px;
    transition: var(--transition);
}
.pagination a:hover {
    border-color: var(--primary);
    color: var(--primary);
}
.pagination .current {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.pagination .dots { border: none; }

/* 空状态 */
.empty-tip {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-muted);
}
.empty-tip p { margin-bottom: 16px; font-size: 16px; }

/* 联系页面 */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 40px;
}
.contact-info h3, .contact-form-card h3 {
    font-size: 22px;
    margin-bottom: 24px;
    color: var(--primary);
}
.contact-info-item {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--bg-gray);
    border-radius: var(--radius);
    margin-bottom: 16px;
    transition: var(--transition);
}
.contact-info-item:hover {
    background: var(--bg-white);
    box-shadow: var(--shadow);
}
.contact-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}
.contact-info-item h4 {
    font-size: 15px;
    margin-bottom: 4px;
    color: var(--text-primary);
}
.contact-info-item p {
    font-size: 14px;
    color: var(--text-secondary);
}
.contact-phone {
    color: var(--primary);
    font-weight: 700;
    font-size: 18px;
}
.contact-form-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow);
}
.form-desc {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 14px;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.form-group {
    margin-bottom: 18px;
}
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-primary);
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    transition: var(--transition);
    background: var(--bg-white);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(58,168,171,0.1);
}
.form-group textarea { resize: vertical; }
.form-submit {
    width: 100%;
    padding: 14px;
    font-size: 16px;
}

/* 产品详情 */
.product-detail-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-bottom: 50px;
}
.product-detail-gallery { position: relative; }
.product-main-img {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    aspect-ratio: 1/1;
}
.product-main-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.product-detail-title {
    font-size: 28px;
    margin: 12px 0 16px;
    color: var(--text-primary);
}
.product-detail-summary {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
    padding: 16px 20px;
    background: var(--bg-gray);
    border-radius: var(--radius);
    border-left: 4px solid var(--primary);
}
.product-detail-meta {
    margin-bottom: 28px;
}
.meta-item {
    display: flex;
    padding: 10px 0;
    border-bottom: 1px dashed var(--border);
}
.meta-label {
    width: 100px;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 14px;
}
.meta-value {
    flex: 1;
    font-size: 14px;
    color: var(--text-primary);
}
.product-detail-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}
.product-detail-service {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}
.service-item {
    text-align: center;
    padding: 12px 8px;
    background: var(--bg-gray);
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-secondary);
}
.service-item span { color: var(--primary-light); font-weight: 700; }
.product-detail-content {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 30px;
    margin-bottom: 50px;
}
.detail-tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--border);
    margin-bottom: 24px;
}
.detail-tab {
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: var(--transition);
}
.detail-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}
.rich-content {
    font-size: 16px;
    line-height: 2;
    color: var(--text-primary);
}
.rich-content p { margin-bottom: 20px; }
.rich-content h2, .rich-content h3, .rich-content h4 {
    margin: 32px 0 16px;
    color: var(--primary-dark);
    font-weight: 600;
    padding-left: 12px;
    border-left: 4px solid var(--primary);
}
.rich-content h2 { font-size: 20px; }
.rich-content h3 { font-size: 18px; }
.rich-content img {
    max-width: 100%;
    border-radius: var(--radius);
    margin: 20px 0;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.rich-content ul, .rich-content ol {
    margin: 16px 0;
    padding-left: 28px;
}
.rich-content ul li { list-style: disc; margin: 8px 0; }
.rich-content ol li { list-style: decimal; margin: 8px 0; }
.rich-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
}
.rich-content th, .rich-content td {
    border: 1px solid var(--border);
    padding: 10px 14px;
    text-align: left;
}
.rich-content th { background: var(--bg-gray); font-weight: 600; }
.related-products h3, .related-news h3 {
    font-size: 22px;
    margin-bottom: 24px;
    color: var(--primary);
    padding-left: 14px;
    border-left: 4px solid var(--primary);
}
.related-news {
    margin-top: 56px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
}
.related-news .news-card {
    border-radius: var(--radius-lg);
}
.related-news .news-card:hover {
    border-color: var(--primary-light);
}

/* 资讯列表页 */
.news-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
}
.news-list { display: flex; flex-direction: column; gap: 20px; }
.news-list-item {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 24px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}
.news-list-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(4px);
}
.news-list-img {
    aspect-ratio: 4/3;
    background: var(--bg-gray);
    overflow: hidden;
}
.news-list-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.news-list-content { padding: 20px 24px 20px 0; }
.news-list-item.no-img { grid-template-columns: 1fr; position: relative; padding-left: 4px; }
.news-list-item.no-img::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--primary-light), var(--primary));
    border-radius: 4px 0 0 4px;
}
.news-list-item.no-img .news-list-content { padding: 24px; }
.news-list-item.no-img .news-list-content h3 { font-size: 20px; }
.news-list-item.no-img .news-list-content p { font-size: 14px; -webkit-line-clamp: 3; }
.news-list-content h3 {
    font-size: 18px;
    margin: 8px 0 10px;
    line-height: 1.4;
}
.news-list-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-list-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--text-muted);
}
.news-more { color: var(--primary-light); font-weight: 600; }

/* 侧边栏 */
.news-sidebar { position: sticky; top: 100px; }
.sidebar-widget {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
}
.sidebar-widget h4 {
    font-size: 17px;
    margin-bottom: 16px;
    color: var(--primary);
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary);
    display: inline-block;
}
.sidebar-news-item {
    display: block;
    padding: 10px 0;
    border-bottom: 1px dashed var(--border-light);
}
.sidebar-news-item:last-child { border-bottom: none; }
.sidebar-news-title {
    display: block;
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 4px;
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.sidebar-news-item:hover .sidebar-news-title { color: var(--primary-light); }
.sidebar-news-date {
    font-size: 12px;
    color: var(--text-muted);
}
.sidebar-contact { text-align: center; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); }
.sidebar-contact h4 { color: #fff; border-bottom-color: var(--gold); }
.sidebar-contact p { color: rgba(255,255,255,0.8); font-size: 14px; margin-bottom: 4px; }
.sidebar-phone {
    font-size: 22px !important;
    font-weight: 800 !important;
    color: var(--gold) !important;
    margin-bottom: 16px !important;
}

/* 资讯详情 */
.news-detail-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
}
.news-detail-main {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
}
.news-detail-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--border);
}
.news-detail-header h1 {
    font-size: 28px;
    margin: 12px 0 16px;
    line-height: 1.4;
    color: var(--text-primary);
    font-weight: 700;
}
.news-detail-meta {
    display: flex;
    justify-content: center;
    gap: 24px;
    font-size: 13px;
    color: var(--text-muted);
}
.news-detail-summary {
    background: var(--bg-gray);
    padding: 20px 24px;
    border-radius: var(--radius);
    border-left: 4px solid var(--primary);
    margin-bottom: 30px;
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-secondary);
}
    color: var(--text-secondary);
    line-height: 1.8;
}
.news-detail-content { margin-bottom: 40px; }
.news-prev-next {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}
.prev-next-item {
    padding: 16px;
    background: var(--bg-gray);
    border-radius: var(--radius);
}
.prev-next-item span:first-child {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
}
.prev-next-item a {
    font-size: 14px;
    color: var(--text-primary);
    line-height: 1.5;
}
.prev-next-item a:hover { color: var(--primary-light); }
.no-more { color: var(--text-muted) !important; font-size: 14px; }

/* 城市分站 */
.city-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-bottom: 50px;
}
.city-stat-item { text-align: center; }
.city-stat-num {
    display: block;
    font-size: 42px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}
.city-stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 8px;
}
.city-group { margin-bottom: 40px; }
.city-group-title {
    font-size: 20px;
    color: var(--primary);
    margin-bottom: 20px;
    padding-left: 12px;
    border-left: 4px solid var(--primary);
}
.city-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.city-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    transition: var(--transition);
    display: block;
}
.city-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}
.city-card-icon { font-size: 32px; margin-bottom: 12px; }
.city-card h4 { font-size: 17px; margin-bottom: 8px; color: var(--primary); }
.city-card p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.5;
}
.city-card-link {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary-light);
}

/* 城市分站页 - 平铺样式 */
.cities-intro {
    max-width: 900px;
    margin: 0 auto 40px;
    text-align: center;
}
.cities-intro p {
    font-size: 15px;
    line-height: 1.9;
    color: var(--text-secondary);
}
.cities-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
    margin-bottom: 40px;
}
.cities-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: var(--transition);
    text-decoration: none;
}
.cities-item:hover {
    border-color: var(--primary);
    background: rgba(58,168,171,0.05);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}
.cities-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
    flex-shrink: 0;
}
.cities-name {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}
.cities-item:hover .cities-name {
    color: var(--primary);
}
.cities-arrow {
    font-size: 14px;
    color: var(--text-muted);
    transition: var(--transition);
}
.cities-item:hover .cities-arrow {
    color: var(--primary);
    transform: translateX(3px);
}
.cities-notice {
    text-align: center;
    padding: 24px;
    background: var(--bg-gray);
    border-radius: var(--radius);
}
.cities-notice p {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0;
}
.cities-notice strong {
    color: var(--primary);
    font-size: 16px;
}

@media (max-width: 1024px) {
    .cities-grid { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 768px) {
    .cities-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
    .cities-item { padding: 12px 14px; }
    .cities-name { font-size: 13px; }
}
@media (max-width: 480px) {
    .cities-grid { grid-template-columns: repeat(2, 1fr); }
}

/* 关于详情页 */
.about-detail-title {
    font-size: 24px;
    color: var(--primary);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary);
    display: inline-block;
}
.city-notice {
    background: var(--warning-bg);
    border: 1px solid #ffe082;
    padding: 12px 16px;
    border-radius: 6px;
    font-size: 14px;
    color: var(--warning-text);
    margin-top: 16px;
}
.culture-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.culture-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 30px 24px;
    text-align: center;
    transition: var(--transition);
}
.culture-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.culture-icon { font-size: 40px; margin-bottom: 16px; }
.culture-card h3 { font-size: 17px; margin-bottom: 10px; color: var(--primary); }
.culture-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }

/* 时间线 */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 40px;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--primary-light), var(--border));
}
.timeline-item {
    position: relative;
    margin-bottom: 30px;
}
.timeline-item::before {
    content: '';
    position: absolute;
    left: -33px;
    top: 6px;
    width: 14px;
    height: 14px;
    background: var(--primary);
    border: 3px solid #fff;
    border-radius: 50%;
    box-shadow: 0 0 0 2px var(--primary);
}
.timeline-year {
    font-size: 20px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 6px;
}
.timeline-content {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
}
.timeline-content h4 { font-size: 16px; margin-bottom: 6px; }
.timeline-content p { font-size: 14px; color: var(--text-secondary); }

/* ============================================================
   响应式适配
   ============================================================ */
@media (max-width: 1024px) {
    .cat-grid, .adv-grid, .product-grid, .culture-grid, .city-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
    .news-layout, .news-detail-layout { grid-template-columns: 1fr; }
    .news-sidebar { position: static; }
}

@media (max-width: 768px) {
    .section { padding: 50px 0; }
    .section-title h2 { font-size: 24px; }
    .hero { min-height: 440px; }
    .hero h1 { font-size: 28px; }
    .top-bar { display: none; }
    .nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
        z-index: 999;
    }
    .nav.open { transform: translateY(0); }
    .nav a { padding: 12px 16px; }
    .menu-toggle { display: flex; }
    .header-phone span { display: none; }
    .cat-grid, .adv-grid, .product-grid, .culture-grid, .city-grid, .industry-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .client-grid { grid-template-columns: repeat(3, 1fr); }
    .about-layout, .contact-layout, .product-detail-layout {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .about-experience { position: static; margin-top: 20px; justify-content: center; }
    .cta-content { flex-direction: column; text-align: center; }
    .cta-actions { flex-direction: column; }
    .cta-phone-box { text-align: center; }
    .footer-grid { grid-template-columns: 1fr; }
    .news-list-item { grid-template-columns: 1fr; }
    .news-list-content { padding: 0 20px 20px; }
    .form-row { grid-template-columns: 1fr; }
    .product-detail-service { grid-template-columns: repeat(2, 1fr); }
    .news-prev-next { grid-template-columns: 1fr; }
    .news-detail-main { padding: 24px; }
    .hero-slider-arrow { display: none; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-item .num { font-size: 32px; }
}

@media (max-width: 480px) {
    .cat-grid, .adv-grid, .product-grid, .culture-grid, .city-grid, .industry-grid {
        grid-template-columns: 1fr;
    }
    .client-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .hero h1 { font-size: 24px; }
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .stat-item .num { font-size: 28px; }
    .section-title h2 { font-size: 22px; }
    .contact-form-card { padding: 24px; }
}