/* ========== 爱股科技 — 设计系统 ========== */
:root {
    /* 品牌色 — #F86D22 */
    --color-primary: #F86D22;
    --color-primary-dark: #d55a15;
    --color-primary-light: #fa8c4a;
    --color-primary-pale: #fff5f0;

    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #d55a15 0%, #F86D22 50%, #fa8c4a 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a1a 0%, #2d2016 100%);
    --gradient-card: linear-gradient(145deg, #ffffff 0%, #fffaf7 100%);

    /* 中性色 */
    --color-bg: #faf9f8;
    --color-surface: #ffffff;
    --color-border: #e8e3df;
    --color-text: #1e1e1e;
    --color-text-secondary: #6b625c;
    --color-text-muted: #9c938c;

    /* 间距 */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;

    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(248, 109, 34, 0.06);
    --shadow-md: 0 4px 16px rgba(248, 109, 34, 0.08);
    --shadow-lg: 0 12px 40px rgba(248, 109, 34, 0.12);
    --shadow-xl: 0 20px 60px rgba(248, 109, 34, 0.18);

    /* 圆角 */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* 字体 */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;

    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    font-size: 16px;
}

a {
    color: var(--color-primary-light);
    text-decoration: none;
}

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

/* ========== 导航栏 ========== */
.navbar {
    background: var(--gradient-primary);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow var(--transition-base);
}

.navbar.navbar--scrolled {
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 30px;
    position: relative;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: inherit;
    z-index: 1;
}

.nav-logo {
    height: 44px;
    width: auto;
    border-radius: var(--radius-sm);
}

.nav-company-name {
    color: #fff;
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
    align-items: center;
}

.nav-menu li a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

.nav-menu li a:hover,
.nav-menu li a.active {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
}

/* 汉堡菜单按钮 */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 8px;
    border: none;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.15);
    cursor: pointer;
    color: white;
}

.nav-toggle span {
    display: block;
    height: 2px;
    background: currentColor;
    border-radius: 1px;
    transition: transform var(--transition-base);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ========== 页脚 ========== */
.footer {
    background: #1e1e1e;
    color: #fff;
    padding: var(--space-3xl) 30px var(--space-xl);
}

.footer-grid {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-xl);
    text-align: left;
}

.footer-col h3 {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-primary-light);
    margin-bottom: var(--space-md);
    font-weight: 600;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 10px;
}

.footer-col a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition-fast);
}

.footer-col a:hover {
    color: var(--color-primary-light);
}

.footer-col p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer-col p a {
    font-size: 14px;
}

.footer-bottom {
    max-width: 1100px;
    margin: var(--space-xl) auto 0;
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
}

/* ========== 回到顶部按钮 ========== */
.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 32px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: var(--color-primary);
    color: #fff;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    z-index: 900;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-fast);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    background: var(--color-primary-dark);
}

/* ========== 面包屑导航 ========== */
.breadcrumb {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-md) 30px;
    font-size: 14px;
    color: var(--color-text-muted);
}

.breadcrumb a {
    color: var(--color-text-secondary);
    text-decoration: none;
}

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

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

/* ========== 页面头部 ========== */
.page-header {
    background: var(--gradient-primary);
    padding: 80px 30px 60px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(248, 109, 34, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(248, 109, 34, 0.18) 0%, transparent 50%);
    pointer-events: none;
}

.page-header h1 {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.page-header p {
    font-size: 18px;
    opacity: 0.85;
    position: relative;
    z-index: 1;
}

/* ========== 按钮系统 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 10px 24px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    font-family: inherit;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-accent {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: var(--shadow-md);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.7);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}

.btn-outline-dark {
    background: transparent;
    color: var(--color-primary-light);
    border: 2px solid var(--color-primary-light);
}

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

.btn-sm {
    padding: 6px 14px;
    font-size: 12px;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 16px;
}

/* ========== 区块标题 ========== */
.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-label {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.section-title {
    font-size: clamp(26px, 3vw, 36px);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    font-size: 16px;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========== Hero区域 ========== */
.hero {
    background: var(--gradient-primary);
    color: #fff;
    padding: 80px 30px 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(255, 255, 255, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(248, 109, 34, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 60% 80%, rgba(248, 109, 34, 0.08) 0%, transparent 40%);
    pointer-events: none;
}

.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-copy h1 {
    font-size: clamp(30px, 4.5vw, 46px);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.hero-copy h1 .accent {
    color: var(--color-primary-light);
}

.hero-lead {
    font-size: 17px;
    opacity: 0.9;
    max-width: 540px;
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.hero-visual {
    position: relative;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-glow {
    position: absolute;
    width: 340px;
    height: 340px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 35%, rgba(255, 255, 255, 0.25), transparent 55%),
        radial-gradient(circle at 65% 65%, rgba(255, 255, 255, 0.12), transparent 50%);
    animation: glow-pulse 6s ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.06); opacity: 1; }
}

.hero-logo-mark {
    position: relative;
    width: clamp(120px, 20vw, 160px);
    height: auto;
    filter: drop-shadow(0 16px 40px rgba(0, 0, 0, 0.35));
}

.hero-stats {
    display: flex;
    gap: var(--space-xl);
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-stat-val {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-primary-light);
    line-height: 1.1;
}

.hero-stat-lbl {
    font-size: 13px;
    opacity: 0.7;
    margin-top: 4px;
}

/* ========== 区块容器 ========== */
.section {
    padding: var(--space-4xl) 30px;
}

.section-gray {
    background: linear-gradient(180deg, #f1f5f9 0%, #f8fafc 100%);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* ========== 产品卡片 ========== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--gradient-card);
    border-radius: var(--radius-lg);
    padding: 28px 24px 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: all var(--transition-slow);
    position: relative;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.product-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
    align-self: flex-start;
}

.product-tag--live {
    background: rgba(248, 109, 34, 0.1);
    color: var(--color-primary-light);
}

.product-tag--build {
    background: rgba(248, 109, 34, 0.1);
    color: var(--color-primary-dark);
}

.product-logo {
    width: 52px;
    height: 52px;
    margin-bottom: 16px;
    border-radius: var(--radius-md);
    object-fit: contain;
    transition: transform var(--transition-slow);
}

.product-card:hover .product-logo {
    transform: scale(1.05);
}

.product-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 8px;
}

.product-features {
    list-style: none;
    margin-bottom: 16px;
    flex: 1;
}

.product-features li {
    font-size: 13px;
    color: var(--color-text-secondary);
    padding-left: 16px;
    position: relative;
    margin-bottom: 6px;
    line-height: 1.5;
}

.product-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--color-primary);
}

.product-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    background: var(--gradient-primary);
    color: #fff;
    text-decoration: none;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    transition: all var(--transition-base);
    align-self: flex-start;
}

.product-link:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.product-link--disabled {
    background: var(--color-border);
    color: var(--color-text-muted);
    cursor: not-allowed;
    pointer-events: none;
}

.product-card.developing {
    opacity: 0.8;
}

.product-card.developing::after {
    content: '研发中';
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--gradient-primary);
    color: var(--color-primary);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 700;
}

.product-credentials-wrap {
    margin-top: 12px;
    border-top: 1px solid var(--color-border);
    padding-top: 10px;
}

.product-credentials-wrap summary {
    cursor: pointer;
    font-size: 12px;
    font-weight: 700;
    color: var(--color-primary-light);
    list-style: none;
    padding: 6px 0;
}

.product-credentials-wrap summary::-webkit-details-marker {
    display: none;
}

.credentials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(70px, 1fr));
    gap: 8px;
    margin-top: 10px;
}

.credential-item {
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: transform var(--transition-base);
    border: 2px solid var(--color-border);
}

.credential-item:hover {
    transform: scale(1.04);
}

.credential-item img {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
}

/* ========== 合作伙伴 ========== */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 24px;
    align-items: center;
}

.partner-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 28px 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

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

.partner-logo {
    width: 72px;
    height: 72px;
    margin: 0 auto 12px;
    object-fit: contain;
    filter: grayscale(30%);
    transition: filter var(--transition-base);
}

.partner-card:hover .partner-logo {
    filter: grayscale(0%);
}

.partner-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-secondary);
}

/* ========== 新闻卡片 ========== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}

.news-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    cursor: pointer;
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.news-cover {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--gradient-primary);
}

.news-content {
    padding: 24px;
}

.news-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 10px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-summary {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.65;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 14px;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--color-text-muted);
    padding-top: 14px;
    border-top: 1px solid var(--color-border);
}

.news-more-wrap {
    text-align: center;
    margin-top: var(--space-xl);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: var(--space-3xl) 20px;
    color: var(--color-text-muted);
}

.empty-state p {
    font-size: 16px;
}

/* ========== 联系区域 ========== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.contact-info-list {
    list-style: none;
    display: grid;
    gap: var(--space-md);
}

.contact-info-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    align-items: flex-start;
}

.contact-info-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.contact-info-icon {
    font-size: 24px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(248, 109, 34, 0.1);
    border-radius: var(--radius-md);
    flex-shrink: 0;
}

.contact-info-text strong {
    display: block;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.contact-info-text span,
.contact-info-text a {
    font-size: 15px;
    color: var(--color-text);
}

.contact-form-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.contact-form-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--color-text);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
}

.form-group label .required {
    color: #dc2626;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 15px;
    font-family: var(--font-sans);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    background: var(--color-bg);
    color: var(--color-text);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(248, 109, 34, 0.12);
    background: var(--color-surface);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

.form-hint {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-top: 4px;
}

/* ========== 分页 ========== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: var(--space-xl);
}

.pagination a,
.pagination span {
    padding: 10px 16px;
    background: var(--color-surface);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--color-primary-light);
    font-weight: 500;
    font-size: 14px;
    transition: all var(--transition-base);
    border: 1px solid var(--color-border);
}

.pagination a:hover {
    background: var(--color-primary-light);
    color: #fff;
    border-color: var(--color-primary-light);
}

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

.pagination .disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ========== 文章内容（新闻详情） ========== */
.article-container {
    max-width: 860px;
    margin: 60px auto;
    padding: 0 30px;
}

.article-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 50px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.article-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--color-border);
}

.article-title {
    font-size: 34px;
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: 16px;
    line-height: 1.35;
    letter-spacing: -0.3px;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 24px;
    font-size: 14px;
    color: var(--color-text-muted);
}

.article-cover {
    width: 100%;
    max-height: 480px;
    object-fit: cover;
    border-radius: var(--radius-md);
    margin-bottom: 40px;
}

.article-content {
    font-size: 16px;
    line-height: 1.9;
    color: var(--color-text);
}

.article-content p {
    margin-bottom: 20px;
}

.article-content h2 {
    font-size: 26px;
    margin: 40px 0 18px;
    color: var(--color-text);
}

.article-content h3 {
    font-size: 22px;
    margin: 30px 0 14px;
}

.article-content ul,
.article-content ol {
    margin: 16px 0;
    padding-left: 28px;
}

.article-content li {
    margin: 8px 0;
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: 20px 0;
}

.article-content blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: 20px;
    margin: 20px 0;
    color: var(--color-text-secondary);
}

/* 相关新闻 */
.related-news {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 2px solid var(--color-border);
}

.related-news h3 {
    font-size: 22px;
    margin-bottom: 24px;
    color: var(--color-text);
}

.related-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
}

.related-item {
    padding: 20px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-base);
}

.related-item:hover {
    background: var(--color-primary-light);
    color: #fff;
    border-color: var(--color-primary-light);
    transform: translateY(-4px);
}

.related-item h4 {
    font-size: 15px;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-item p {
    font-size: 12px;
    opacity: 0.7;
}

/* 返回按钮 */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    color: var(--color-text-secondary);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    margin-bottom: 24px;
}

.back-link:hover {
    color: var(--color-primary-light);
    background: var(--color-bg);
}

/* ========== 关于页面 ========== */
.about-content-section {
    max-width: 1200px;
    margin: -30px auto 80px;
    padding: 0 30px;
    position: relative;
    z-index: 2;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 40px;
}

.content-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

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

.content-card h2 {
    font-size: 26px;
    color: var(--color-primary-light);
    margin-bottom: 24px;
    font-weight: 700;
    padding-bottom: 14px;
    border-bottom: 3px solid var(--color-primary);
    display: inline-block;
}

.content-card p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: 14px;
}

.content-card ul {
    list-style: none;
    padding: 0;
}

.content-card ul li {
    font-size: 15px;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: 12px;
    padding-left: 24px;
    position: relative;
}

.content-card ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-primary);
}

/* 企业文化 */
.culture-section {
    background: linear-gradient(180deg, #f1f5f9 0%, #e8ecf2 100%);
    padding: var(--space-4xl) 30px;
}

.culture-container {
    max-width: 1200px;
    margin: 0 auto;
}

.culture-title {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: var(--space-2xl);
    color: var(--color-text);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.culture-item {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.culture-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.culture-icon {
    font-size: 44px;
    margin-bottom: 20px;
}

.culture-item h3 {
    font-size: 20px;
    color: var(--color-primary);
    margin-bottom: 14px;
    font-weight: 700;
}

.culture-item p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* 图片预览模态框 */
.image-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    z-index: 10000;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.2s ease;
}

.image-modal.active {
    display: flex;
}

.image-modal img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: var(--radius-md);
}

.image-modal .close-btn {
    position: absolute;
    top: 24px;
    right: 24px;
    color: #fff;
    font-size: 36px;
    font-weight: 300;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.1);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
    border: none;
    line-height: 1;
}

.image-modal .close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ========== 通知提示 ========== */
.toast {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-text);
    color: #fff;
    padding: 12px 28px;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
    z-index: 10001;
    box-shadow: var(--shadow-lg);
    animation: toast-in 0.3s ease;
}

.toast-success {
    background: #059669;
}

.toast-error {
    background: #dc2626;
}

@keyframes toast-in {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-12px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* ========== 关于页联系卡片 ========== */
.contact-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    margin-top: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 24px;
    padding: 20px;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
    transition: all var(--transition-base);
}

.contact-item:hover {
    background: var(--color-primary-light);
    transform: translateX(8px);
}

.contact-item:hover .contact-icon,
.contact-item:hover .contact-label,
.contact-item:hover .contact-value,
.contact-item:hover .contact-value a {
    color: #fff;
}

.contact-item .contact-icon {
    font-size: 28px;
    margin-right: 18px;
    min-width: 36px;
    text-align: center;
    transition: color var(--transition-base);
}

.contact-item .contact-label {
    font-size: 13px;
    color: var(--color-primary);
    margin-bottom: 6px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color var(--transition-base);
}

.contact-item .contact-value {
    font-size: 17px;
    color: var(--color-text);
    line-height: 1.6;
    transition: color var(--transition-base);
}

.contact-item .contact-value a {
    color: var(--color-text);
    text-decoration: none;
}

/* ========== 网站地图 ========== */
.sitemap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.sitemap-col h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-primary);
}

.sitemap-col ul {
    list-style: none;
}

.sitemap-col li {
    margin-bottom: 8px;
}

.sitemap-col a {
    font-size: 14px;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.sitemap-col a:hover {
    color: var(--color-primary-light);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 32px;
    }
    .hero-lead {
        margin: 0 auto 32px;
    }
    .hero-cta {
        justify-content: center;
    }
    .hero-visual {
        order: -1;
        min-height: 200px;
    }
    .hero-stats {
        justify-content: center;
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
    .content-grid {
        grid-template-columns: 1fr;
    }
    .culture-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-container {
        flex-wrap: wrap;
    }
    .nav-toggle {
        display: flex;
    }
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        padding: 12px 20px 20px;
        background: var(--gradient-primary);
        box-shadow: var(--shadow-lg);
    }
    .nav-menu.is-open {
        display: flex;
    }
    .nav-menu li {
        width: 100%;
    }
    .nav-menu li a {
        display: block;
        padding: 14px 12px;
        border-radius: var(--radius-sm);
    }

    .products-grid {
        grid-template-columns: 1fr;
    }
    .news-grid {
        grid-template-columns: 1fr;
    }
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .section {
        padding: var(--space-3xl) 16px;
    }
    .page-header {
        padding: 60px 20px 40px;
    }
    .article-card {
        padding: 28px 20px;
    }
    .article-title {
        font-size: 26px;
    }
    .article-meta {
        flex-direction: column;
        gap: 8px;
    }
    .breadcrumb {
        padding: 12px 16px;
    }
}