/* 数据中心页面样式 - 红白主色调，多彩点缀专业版 */
:root {
    /* ===== 主色调 - 红白色系 ===== */
    --primary-red: #d32f2f;
    --primary-red-dark: #b71c1c;
    --primary-red-light: #ef5350;
    --primary-red-lightest: #ffebee;
    
    --primary-white: #ffffff;
    --primary-white-dark: #f5f5f5;
    --primary-white-light: #fafafa;
    
    /* ===== 辅助色 - 仅用于点缀 ===== */
    --accent-blue: #2196f3;       /* 少量蓝色用于网络相关元素 */
    --accent-blue-light: #bbdefb;
    --accent-green: #4caf50;      /* 少量绿色用于在线状态 */
    --accent-orange: #ff9800;     /* 少量橙色用于警示 */
    --accent-purple: #9c27b0;     /* 少量紫色用于特殊功能 */
    
    /* ===== 中性色系 ===== */
    --bg-main: #fafafa;
    --bg-card: #ffffff;
    --bg-section: #ffffff;
    --bg-hover: #fff5f5;
    
    /* ===== 文字颜色 ===== */
    --text-primary: #212121;
    --text-secondary: #616161;
    --text-muted: #9e9e9e;
    --text-white: #ffffff;
    --text-red: #d32f2f;
    --text-accent: #1976d2;       /* 少量深蓝用于重要文字 */
    
    /* ===== 边框和阴影 ===== */
    --border-light: #e0e0e0;
    --border-red: #ffcdd2;
    --border-blue: #90caf9;
    --border-green: #a5d6a7;
    --border-orange: #ffcc80;
    --border-purple: #ce93d8;
    
    --shadow-light: 0 2px 12px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-red: 0 4px 20px rgba(239, 83, 80, 0.15);
    --shadow-red-heavy: 0 8px 30px rgba(239, 83, 80, 0.2);
    --shadow-blue: 0 4px 20px rgba(33, 150, 243, 0.15);
    
    /* ===== 渐变 - 红白为主，少量其他色点缀 ===== */
    --gradient-red: linear-gradient(135deg, #ef5350, #d32f2f);
    --gradient-red-light: linear-gradient(135deg, #ffcdd2, #ef9a9a);
    --gradient-red-white: linear-gradient(135deg, #ffffff, #ffebee);
    --gradient-white-red: linear-gradient(to right, #ffffff, #ffebee);
    
    /* 主Banner渐变 */
    --gradient-banner: linear-gradient(135deg, #d32f2f 0%, #b71c1c 30%, #8e0000 100%);
    --gradient-banner-light: linear-gradient(135deg, #ef5350 0%, #d32f2f 50%, #b71c1c 100%);
    
    /* 点缀性渐变 - 使用少量 */
    --gradient-blue: linear-gradient(135deg, #42a5f5, #2196f3);
    --gradient-green: linear-gradient(135deg, #66bb6a, #4caf50);
    --gradient-purple: linear-gradient(135deg, #ba68c8, #9c27b0);
    
    /* ===== 状态色 ===== */
    --status-online: #4caf50;
    --status-warning: #ff9800;
    --status-offline: #9e9e9e;
    --status-highlight: #ffebee;
    
    /* ===== 间距 ===== */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 32px;
    --space-xl: 48px;
    --space-xxl: 64px;
    
    /* ===== 字体大小 - 整体增大 ===== */
    --font-size-xs: 0.875rem;     /* 14px */
    --font-size-sm: 1rem;         /* 16px */
    --font-size-base: 1.125rem;   /* 18px - 基础字体增大 */
    --font-size-lg: 1.25rem;      /* 20px */
    --font-size-xl: 1.5rem;       /* 24px */
    --font-size-2xl: 1.875rem;    /* 30px */
    --font-size-3xl: 2.25rem;     /* 36px */
    --font-size-4xl: 3rem;        /* 48px */
    --font-size-5xl: 3.75rem;     /* 60px */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    overflow-x: hidden;
    max-width: 100%;
}

body {
    font-family: 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
    line-height: 1.7; /* 增加行高提高可读性 */
    color: var(--text-primary);
    background-color: var(--bg-main);
    font-size: var(--font-size-base); /* 使用增大后的基础字体 */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    width: 100%;
}

/* 背景装饰 - 保持红白为主 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(239, 83, 80, 0.03) 0%, transparent 25%),
        radial-gradient(circle at 90% 80%, rgba(211, 47, 47, 0.02) 0%, transparent 25%);
    z-index: -1;
    pointer-events: none;
}

.idc-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px 80px;
    width: 100%;
    position: relative;
    overflow: visible; /* 关键：允许内容溢出，这样通栏才能正常显示 */
}

/* ===== 页面标题区域 - 真正的全宽渐变Banner ===== */
.idc-hero {
    padding: 100px 0;
    text-align: center;
    position: relative;
    background: var(--gradient-banner);
    box-shadow: 0 10px 40px rgba(211, 47, 47, 0.2);
    overflow: hidden;
    /* 真正的全宽解决方案 */
    width: 100vw;
    position: relative;
    left: 50%;
    right: 50%;
    margin-left: -50vw;
    margin-right: -50vw;
    margin-bottom: 80px;
}

/* Banner装饰元素 */
.idc-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    z-index: 1;
}

/* Banner底部装饰 */
.idc-hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 10px;
    background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0.3) 0%, 
        rgba(255, 255, 255, 0.1) 50%, 
        rgba(255, 255, 255, 0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.page-title {
    font-size: var(--font-size-5xl); /* 60px */
    font-weight: 800;
    margin-bottom: 30px;
    color: var(--primary-white);
    letter-spacing: -1.5px;
    position: relative;
    display: inline-block;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    line-height: 1.2;
}

.title-divider {
    width: 120px;
    height: 6px;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.3));
    margin: 30px auto 40px;
    border-radius: 3px;
}

.page-description {
    font-size: var(--font-size-xl); /* 24px */
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.95);
    max-width: 1000px;
    margin: 0 auto 50px;
    padding: 0;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    border: none;
    position: relative;
    font-weight: 400;
}

.highlight-text {
    display: block;
    font-size: var(--font-size-2xl); /* 30px */
    font-weight: 600;
    margin-top: 25px;
    color: var(--primary-white);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

/* Banner统计数字 */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: var(--font-size-4xl); /* 48px */
    font-weight: 800;
    color: var(--primary-white);
    margin-bottom: 10px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.stat-label {
    font-size: var(--font-size-lg); /* 20px */
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

/* ===== 通用区域标题样式 ===== */
.section-header {
    text-align: center;
    margin-bottom: 80px;
    position: relative;
}

.section-header h2 {
    font-size: var(--font-size-4xl); /* 48px - 增大 */
    font-weight: 700;
    margin-bottom: 25px;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    position: relative;
    display: inline-block;
    line-height: 1.3;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 5px;
    background: var(--gradient-red);
    border-radius: 3px;
}

.section-header p {
    font-size: var(--font-size-xl); /* 24px - 显著增大 */
    color: var(--text-secondary);
    max-width: 800px;
    margin: 40px auto 0;
    padding: 25px;
    background: var(--primary-white);
    border-radius: 15px;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-light);
    line-height: 1.8;
    font-weight: 400;
}

/* ===== 线路导航卡片 ===== */
.line-navigation {
    margin-bottom: 100px;
    position: relative;
}

.line-navigation::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(239, 83, 80, 0.3), 
        rgba(33, 150, 243, 0.2), 
        rgba(156, 39, 176, 0.2), 
        rgba(239, 83, 80, 0.3), 
        transparent);
    z-index: 1;
}

.line-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    padding: 10px;
    position: relative;
    z-index: 2;
}

.line-card {
    background: linear-gradient(145deg, #ffffff, #fafafa);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--shadow-medium);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(5px);
}

/* 为不同线路卡片添加细微的边框色变化 */
.line-card[data-line="telecom"] {
    border-color: rgba(239, 83, 80, 0.3);
}

.line-card[data-line="unicom"] {
    border-color: rgba(33, 150, 243, 0.3);
}

.line-card[data-line="mobile"] {
    border-color: rgba(76, 175, 80, 0.3);
}

.line-card[data-line="dual"] {
    border-color: rgba(156, 39, 176, 0.3);
}

.line-card[data-line="bgp"] {
    border-color: rgba(255, 152, 0, 0.3);
}

.line-card[data-line="hk"] {
    border-color: rgba(158, 158, 158, 0.3);
}

.line-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--gradient-red);
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}

.line-card.active::before {
    transform: translateY(0);
}

.line-card.active {
    border-color: var(--primary-red);
    transform: translateY(-10px);
    box-shadow: var(--shadow-red-heavy);
}

.line-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-red);
    box-shadow: var(--shadow-heavy);
}

/* 线路图标设计 - 保持PNG原色 */
.line-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 30px;
    background: linear-gradient(135deg, #f5f5f5, #eeeeee);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

/* 移除图标滤镜，显示原色 */
.line-icon img {
    width: 65px;
    height: 65px;
    object-fit: contain;
    transition: all 0.3s ease;
}

.line-card.active .line-icon {
    transform: scale(1.05);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
    background: linear-gradient(135deg, #ffebee, #ffcdd2);
}

.line-card h3 {
    font-size: var(--font-size-2xl); /* 30px - 增大 */
    margin-bottom: 20px;
    color: var(--text-primary);
    font-weight: 700;
    position: relative;
}

.line-card p {
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.7;
    font-size: var(--font-size-lg); /* 20px - 增大 */
    min-height: 70px;
    font-weight: 400;
}

.line-count {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 25px;
    font-size: var(--font-size-lg); /* 20px - 增大 */
    font-weight: 700;
    transition: all 0.3s ease;
    background: var(--gradient-red);
    color: var(--primary-white);
    box-shadow: 0 4px 12px rgba(239, 83, 80, 0.3);
}

.line-card:hover .line-count {
    transform: scale(1.05);
    box-shadow: 0 6px 15px rgba(239, 83, 80, 0.4);
}

/* ===== 机房展示网格 ===== */
.idc-showcase {
    margin-bottom: 100px;
    position: relative;
}

.idc-showcase::before {
    content: '';
    position: absolute;
    top: 0;
    left: -50px;
    right: -50px;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(239, 83, 80, 0.3), 
        rgba(33, 150, 243, 0.2), 
        rgba(239, 83, 80, 0.3), 
        transparent);
}

.idc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 35px;
    margin-top: 35px;
}

.idc-card {
    background: var(--primary-white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 2px solid transparent;
    position: relative;
    transform: translateY(0);
}

.idc-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--gradient-red);
    opacity: 0.8;
}

.idc-card:hover {
    transform: translateY(-10px);
    border-color: var(--border-red);
    box-shadow: var(--shadow-red-heavy);
}

.idc-card-image {
    height: 260px;
    overflow: hidden;
    position: relative;
}

.idc-card-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(to top, rgba(255, 255, 255, 0.9), transparent);
}

.idc-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.idc-card:hover .idc-card-image img {
    transform: scale(1.08);
}

.idc-card-header {
    padding: 40px 35px;
    background: linear-gradient(135deg, #ffffff, #fafafa);
    border-bottom: 1px solid var(--border-light);
    position: relative;
}

.idc-card-title {
    font-size: var(--font-size-2xl); /* 30px - 增大 */
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--text-primary);
    line-height: 1.3;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.status-badge {
    padding: 8px 18px;
    border-radius: 25px;
    font-size: var(--font-size-sm); /* 16px */
    font-weight: 700;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.1);
}

.status-badge.online {
    background: var(--gradient-green);
    color: var(--primary-white);
}

.status-badge.warning {
    background: var(--gradient-blue);
    color: var(--primary-white);
}

.status-badge.offline {
    background: linear-gradient(135deg, #9e9e9e, #616161);
    color: var(--primary-white);
}

.idc-card-location {
    display: flex;
    align-items: center;
    color: var(--text-secondary);
    font-size: var(--font-size-lg); /* 20px - 增大 */
    line-height: 1.5;
}

.idc-card-location i {
    margin-right: 12px;
    color: var(--primary-red);
    font-size: 1.3rem;
}

.idc-card-body {
    padding: 40px 35px;
}

.idc-specs {
    margin-bottom: 40px;
    background: var(--primary-white-light);
    padding: 30px;
    border-radius: 15px;
    border: 1px solid var(--border-light);
}

.idc-spec {
    display: flex;
    justify-content: space-between;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-light);
}

.idc-spec:last-child {
    border-bottom: none;
}

.spec-label {
    font-weight: 700;
    color: var(--text-primary);
    font-size: var(--font-size-lg); /* 20px - 增大 */
    display: flex;
    align-items: center;
}

.spec-label::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--primary-red);
    border-radius: 50%;
    margin-right: 12px;
}

.spec-value {
    color: var(--primary-red);
    font-size: var(--font-size-lg); /* 20px - 增大 */
    text-align: right;
    max-width: 60%;
    font-weight: 700;
    line-height: 1.5;
}

.idc-features {
    margin-bottom: 40px;
}

.idc-features h4 {
    font-size: var(--font-size-xl); /* 24px - 增大 */
    margin-bottom: 25px;
    color: var(--text-primary);
    font-weight: 700;
    display: flex;
    align-items: center;
}

.idc-features h4::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 25px;
    background: var(--gradient-red);
    margin-right: 15px;
    border-radius: 3px;
}

.idc-features ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.idc-features li {
    padding: 12px 0;
    position: relative;
    padding-left: 40px;
    color: var(--text-secondary);
    font-size: var(--font-size-lg); /* 20px - 增大 */
    line-height: 1.7;
    border-bottom: 1px solid var(--border-light);
}

.idc-features li:last-child {
    border-bottom: none;
}

.idc-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-red);
    font-weight: bold;
    font-size: 1.5rem;
}

.idc-description {
    margin-top: 35px;
    padding: 28px;
    background: var(--status-highlight);
    border-radius: 15px;
    font-size: var(--font-size-lg); /* 20px - 增大 */
    line-height: 1.8;
    color: var(--text-secondary);
    border-left: 6px solid var(--primary-red);
    position: relative;
    overflow: hidden;
    font-weight: 400;
}

.idc-description::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 70%, rgba(255, 255, 255, 0.5) 100%);
    pointer-events: none;
}

.idc-card-footer {
    padding: 35px;
    background: linear-gradient(135deg, #fafafa, #f5f5f5);
    border-top: 1px solid var(--border-light);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.idc-action-btn {
    padding: 16px 20px;
    background: var(--primary-white);
    color: var(--text-primary);
    border: 2px solid var(--border-light);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    font-size: var(--font-size-lg); /* 20px - 增大 */
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    text-align: center;
}

/* 三个按钮用不同的辅助色 */
.idc-action-btn:nth-child(1) {
    border-color: rgba(239, 83, 80, 0.3);
    color: var(--primary-red);
}

.idc-action-btn:nth-child(2) {
    border-color: rgba(33, 150, 243, 0.3);
    color: var(--accent-blue);
}

.idc-action-btn:nth-child(3) {
    border-color: rgba(156, 39, 176, 0.3);
    color: var(--accent-purple);
}

.idc-action-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.idc-action-btn:nth-child(1):hover {
    background: var(--gradient-red);
    color: var(--primary-white);
    border-color: transparent;
}

.idc-action-btn:nth-child(2):hover {
    background: var(--gradient-blue);
    color: var(--primary-white);
    border-color: transparent;
}

.idc-action-btn:nth-child(3):hover {
    background: var(--gradient-purple);
    color: var(--primary-white);
    border-color: transparent;
}

.idc-action-btn i {
    margin-right: 10px;
    font-size: 1.4rem;
}

/* ===== 特点展示区域 ===== */
.features-showcase {
    margin: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 35px;
}

.feature-item {
    background: var(--primary-white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 2px solid transparent;
    position: relative;
    transform: translateY(0);
}

/* 为每个特点项目添加不同的左边框色 */
.feature-item:nth-child(1) {
    border-left: 6px solid var(--primary-red);
}

.feature-item:nth-child(2) {
    border-left: 6px solid var(--accent-blue);
}

.feature-item:nth-child(3) {
    border-left: 6px solid var(--accent-green);
}

.feature-item:nth-child(4) {
    border-left: 6px solid var(--accent-purple);
}

.feature-item:nth-child(5) {
    border-left: 6px solid var(--accent-orange);
}

.feature-item:nth-child(6) {
    border-left: 6px solid #9e9e9e;
}

.feature-item:hover {
    transform: translateY(-10px);
    border-color: var(--border-red);
    box-shadow: var(--shadow-red-heavy);
}

.feature-image {
    height: 260px;
    overflow: hidden;
    position: relative;
}

.feature-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 60%, rgba(0, 0, 0, 0.1) 100%);
}

.feature-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.feature-item:hover .feature-image img {
    transform: scale(1.08);
}

.feature-content {
    padding: 40px;
}

.feature-content h3 {
    font-size: var(--font-size-2xl); /* 30px - 增大 */
    margin-bottom: 25px;
    color: var(--text-primary);
    font-weight: 800;
    display: flex;
    align-items: center;
}

/* 为每个特点项目添加不同的图标颜色 */
.feature-item:nth-child(1) .feature-content h3 {
    color: var(--primary-red);
}

.feature-item:nth-child(2) .feature-content h3 {
    color: var(--accent-blue);
}

.feature-item:nth-child(3) .feature-content h3 {
    color: var(--accent-green);
}

.feature-item:nth-child(4) .feature-content h3 {
    color: var(--accent-purple);
}

.feature-item:nth-child(5) .feature-content h3 {
    color: var(--accent-orange);
}

.feature-item:nth-child(6) .feature-content h3 {
    color: var(--text-secondary);
}

.feature-content h3::before {
    content: '';
    display: inline-block;
    width: 10px;
    height: 10px;
    background: currentColor;
    border-radius: 50%;
    margin-right: 15px;
    box-shadow: 0 0 10px currentColor;
}

.feature-content p {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: var(--font-size-lg); /* 20px - 增大 */
    font-weight: 400;
}

/* ===== 服务联动区域 ===== */
.service-links {
    margin-top: 80px;
    position: relative;
}

.service-links::before {
    content: '';
    position: absolute;
    top: -40px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(239, 83, 80, 0.5), 
        rgba(33, 150, 243, 0.3), 
        rgba(156, 39, 176, 0.3), 
        transparent);
}

.service-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 35px;
}

.service-card {
    background: var(--primary-white);
    border-radius: 20px;
    padding: 50px 45px;
    box-shadow: var(--shadow-medium);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-decoration: none;
    color: inherit;
    display: block;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    transform: translateY(0);
}

/* 为不同服务卡片添加不同的上边框色 */
.service-card:nth-child(1) {
    border-top: 6px solid var(--primary-red);
}

.service-card:nth-child(2) {
    border-top: 6px solid var(--accent-blue);
}

.service-card:nth-child(3) {
    border-top: 6px solid var(--accent-purple);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-red-heavy);
}

.service-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #f5f5f5, #eeeeee);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 40px;
    position: relative;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

/* 移除服务图标滤镜 */
.service-icon img {
    width: 55px;
    height: 55px;
    object-fit: contain;
    transition: all 0.3s ease;
}

.service-card:hover .service-icon {
    transform: scale(1.05) rotate(5deg);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
    background: linear-gradient(135deg, #ffebee, #ffcdd2);
}

.service-card h3 {
    font-size: var(--font-size-2xl); /* 30px - 增大 */
    margin-bottom: 25px;
    color: var(--text-primary);
    font-weight: 800;
}

/* 服务标题颜色对应 */
.service-card:nth-child(1) h3 {
    color: var(--primary-red);
}

.service-card:nth-child(2) h3 {
    color: var(--accent-blue);
}

.service-card:nth-child(3) h3 {
    color: var(--accent-purple);
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 40px;
    font-size: var(--font-size-lg); /* 20px - 增大 */
    font-weight: 400;
}

.link-arrow {
    color: var(--primary-red);
    font-size: 1.8rem;
    font-weight: bold;
    transition: all 0.3s ease;
    display: inline-block;
}

.service-card:nth-child(2) .link-arrow {
    color: var(--accent-blue);
}

.service-card:nth-child(3) .link-arrow {
    color: var(--accent-purple);
}

.service-card:hover .link-arrow {
    transform: translateX(10px);
}

/* ===== 响应式设计 ===== */
@media (max-width: 1200px) {
    .idc-container {
        max-width: 100%;
        padding: 0 25px 60px;
    }
    
    .page-title {
        font-size: var(--font-size-4xl); /* 48px */
    }
    
    .section-header h2 {
        font-size: var(--font-size-3xl); /* 36px */
    }
    
    .idc-card-footer {
        grid-template-columns: 1fr;
    }
    
    .hero-stats {
        gap: 40px;
    }
}

@media (max-width: 992px) {
    .idc-hero {
        padding: 80px 0;
        margin-bottom: 60px;
    }
    
    .page-title {
        font-size: var(--font-size-3xl); /* 36px */
    }
    
    .page-description {
        font-size: var(--font-size-lg); /* 20px */
    }
    
    .highlight-text {
        font-size: var(--font-size-xl); /* 24px */
    }
    
    .stat-number {
        font-size: var(--font-size-3xl); /* 36px */
    }
    
    .stat-label {
        font-size: var(--font-size-base); /* 18px */
    }
    
    .section-header h2 {
        font-size: var(--font-size-2xl); /* 30px */
    }
    
    .section-header p {
        font-size: var(--font-size-lg); /* 20px */
    }
    
    .line-cards,
    .features-grid,
    .service-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .idc-grid {
        grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    }
    
    .hero-stats {
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .idc-container {
        padding: 0 15px 50px;
        min-width: 320px;
    }
    
    .idc-hero {
        padding: 60px 0;
        margin-bottom: 50px;
    }
    
    .page-title {
        font-size: var(--font-size-2xl); /* 30px */
    }
    
    .title-divider {
        width: 80px;
        height: 4px;
        margin: 20px auto 30px;
    }
    
    .page-description {
        font-size: var(--font-size-base); /* 18px */
        margin-bottom: 40px;
    }
    
    .highlight-text {
        font-size: var(--font-size-lg); /* 20px */
        margin-top: 20px;
    }
    
    .hero-stats {
        flex-direction: row;
        justify-content: space-around;
        gap: 15px;
        margin-top: 40px;
        padding-top: 30px;
    }
    
    .stat-number {
        font-size: var(--font-size-xl);
    }
    
    .stat-label {
        font-size: var(--font-size-sm);
        text-align: center;
    }
    
    .section-header {
        margin-bottom: 60px;
    }
    
    .section-header h2 {
        font-size: var(--font-size-xl); /* 24px */
    }
    
    .section-header p {
        font-size: var(--font-size-base); /* 18px */
        padding: 20px 15px;
        margin-top: 25px;
    }
    
    .line-cards,
    .features-grid,
    .service-cards,
    .idc-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .line-card {
        padding: 30px 25px;
    }
    
    .line-card h3 {
        font-size: var(--font-size-xl); /* 24px */
    }
    
    .line-card p {
        font-size: var(--font-size-base); /* 18px */
        min-height: auto;
    }
    
    .line-icon {
        width: 80px;
        height: 80px;
    }
    
    .line-icon img {
        width: 50px;
        height: 50px;
    }
    
    .line-count {
        font-size: var(--font-size-base); /* 18px */
        padding: 10px 20px;
    }
    
    .idc-card-header,
    .idc-card-body {
        padding: 30px 25px;
    }
    
    .idc-card-title {
        font-size: var(--font-size-xl); /* 24px */
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .idc-card-location {
        font-size: var(--font-size-base); /* 18px */
    }
    
    .idc-card-footer {
        padding: 25px;
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .idc-action-btn {
        padding: 14px;
        font-size: var(--font-size-base); /* 18px */
    }
    
    .spec-label,
    .spec-value,
    .idc-features li,
    .idc-description,
    .feature-content p,
    .service-card p {
        font-size: var(--font-size-base); /* 18px */
    }
    
    .feature-image,
    .idc-card-image {
        height: 220px;
    }
    
    .feature-content,
    .service-card {
        padding: 30px 25px;
    }
    
    .service-card h3 {
        font-size: var(--font-size-xl); /* 24px */
    }
    
    .service-icon {
        width: 80px;
        height: 80px;
        margin-bottom: 30px;
    }
    
    .service-icon img {
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .page-title {
        font-size: var(--font-size-xl); /* 24px */
    }
    
    .page-description {
        font-size: var(--font-size-sm); /* 16px */
        padding: 0;
    }
    
    .highlight-text {
        font-size: var(--font-size-base); /* 18px */
    }
    
    .section-header h2 {
        font-size: var(--font-size-lg); /* 20px */
    }
    
    .section-header p {
        font-size: var(--font-size-sm); /* 16px */
        padding: 15px 10px;
    }
    
    .idc-hero {
        padding: 50px 0;
    }
    
    .line-icon,
    .service-icon {
        width: 70px;
        height: 70px;
    }
    
    .line-icon img,
    .service-icon img {
        width: 40px;
        height: 40px;
    }
    
    .feature-image,
    .idc-card-image {
        height: 200px;
    }
    
    .hero-stats {
        gap: 10px;
        padding-top: 20px;
    }
    .stat-number {
        font-size: var(--font-size-lg); /* 进一步减小到20px */
    }
    
    .stat-label {
        font-size: var(--font-size-xs); /* 进一步减小到14px */
    }
}

/* ===== 动画效果 ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(239, 83, 80, 0.4);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(239, 83, 80, 0);
    }
}

.idc-card,
.feature-item,
.service-card,
.line-card {
    animation: fadeInUp 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    opacity: 0;
}

.idc-card:nth-child(1) { animation-delay: 0.1s; }
.idc-card:nth-child(2) { animation-delay: 0.2s; }
.idc-card:nth-child(3) { animation-delay: 0.3s; }
.idc-card:nth-child(4) { animation-delay: 0.4s; }
.idc-card:nth-child(5) { animation-delay: 0.5s; }
.idc-card:nth-child(6) { animation-delay: 0.6s; }

.feature-item:nth-child(1) { animation-delay: 0.2s; }
.feature-item:nth-child(2) { animation-delay: 0.3s; }
.feature-item:nth-child(3) { animation-delay: 0.4s; }
.feature-item:nth-child(4) { animation-delay: 0.5s; }
.feature-item:nth-child(5) { animation-delay: 0.6s; }
.feature-item:nth-child(6) { animation-delay: 0.7s; }

.line-card.active .line-icon {
    animation: float 3s ease-in-out infinite;
}

/* ===== 无数据提示 ===== */
.no-data {
    text-align: center;
    padding: 80px 40px;
    color: var(--text-secondary);
    font-size: var(--font-size-xl); /* 24px - 增大 */
    grid-column: 1 / -1;
    background: var(--primary-white);
    border-radius: 20px;
    border: 3px dashed var(--border-light);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

.no-data::before {
    content: "📊";
    display: block;
    font-size: 3.5rem;
    margin-bottom: 25px;
    animation: float 3s ease-in-out infinite;
}

.no-data::after {
    content: '暂无数据中心信息';
    display: block;
    margin-top: 20px;
    font-size: var(--font-size-lg); /* 20px - 增大 */
    color: var(--text-muted);
}

/* ===== 滚动条样式 ===== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--primary-white-dark);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-red);
    border-radius: 5px;
    border: 2px solid transparent;
    background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--primary-red-light), var(--primary-red-dark));
}

/* ===== 聚焦状态 ===== */
*:focus {
    outline: 2px solid var(--primary-red);
    outline-offset: 3px;
    box-shadow: 0 0 0 3px rgba(239, 83, 80, 0.2);
}

/* ===== 图标字体 ===== */

.icon-server:before {
    content: "⌗️";
    font-size: 1.3rem;
}

.icon-rack:before {
    content: "▮";
    font-size: 1.3rem;
}

.icon-cloud:before {
    content: "⏺";
    font-size: 1.3rem;
}

.icon-location:before {
    content: "📍";
    font-size: 1.3rem;
}

/* ===== 打印样式 ===== */
@media print {
    .idc-container {
        max-width: 100%;
        padding: 0;
        background: white;
    }
    
    body {
        background: white;
        color: #333;
        font-size: 14px;
    }
    
    .idc-hero,
    .line-navigation,
    .service-links {
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .line-card,
    .idc-card,
    .feature-item,
    .service-card {
        break-inside: avoid;
        page-break-inside: avoid;
        background: white !important;
        color: #333 !important;
        border: 1px solid #ddd !important;
    }
    
    .idc-grid,
    .features-grid,
    .service-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .page-title,
    .section-header h2,
    .line-card h3,
    .idc-card-title,
    .feature-content h3,
    .service-card h3 {
        color: #222 !important;
    }
    
    .page-description,
    .section-header p,
    .line-card p,
    .feature-content p,
    .service-card p,
    .idc-description {
        color: #666 !important;
    }
    
    .idc-action-btn:hover,
    .service-card:hover,
    .feature-item:hover,
    .line-card:hover {
        transform: none !important;
    }
}