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

:root {
    --bg-dark: #0f0f12;
    --section-bg: #1a1a24;
    --gold: #d4af37;
    --light-gold: #ffdb7a;
    --text-light: #ffffff;
    --text-gray: #b0b0c0;
    --wechat: #07c160;
    --qq: #1982d1;
    --douyin: #ff0050;
    --email: #4285f4;
    --phone: #d4af37;
    --xiaohongshu: #ff2442;
    --bilibili: #fb7299;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    background: linear-gradient(135deg, #0c0c12, #151520);
    color: var(--text-light);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
    padding: 0;
    margin: 0;
}

/* 装饰背景 */
.bg-pattern {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 10% 20%, rgba(212, 175, 55, 0.05) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(212, 175, 55, 0.05) 0%, transparent 20%),
        radial-gradient(circle at 50% 30%, rgba(25, 130, 209, 0.03) 0%, transparent 25%),
        radial-gradient(circle at 30% 70%, rgba(7, 193, 96, 0.03) 0%, transparent 25%);
    z-index: -1;
}

/* 导航栏 */
.navbar {
    background: rgba(15, 15, 20, 0.95);
    backdrop-filter: blur(12px);
    padding: 18px 5%;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
}

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    background: linear-gradient(to right, var(--gold), var(--light-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    letter-spacing: 0.5px;
    cursor: pointer;
}

.logo i {
    margin-right: 8px;
    font-size: 1.6rem;
    color: var(--gold);
}

/* 桌面导航链接 */
.desktop-nav-links {
    display: none;
    align-items: center;
    gap: 20px;
}

.desktop-nav-link {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 5px;
    transition: var(--transition);
    position: relative;
}

.desktop-nav-link:hover {
    color: var(--light-gold);
    background: rgba(255, 255, 255, 0.05);
}

.desktop-nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gold);
    transition: var(--transition);
}

.desktop-nav-link:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    background: transparent;
    border: none;
    color: var(--light-gold);
    font-size: 1.4rem;
    cursor: pointer;
    z-index: 1001;
}

/* 移动端导航菜单 */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -300px;
    width: 280px;
    height: 100vh;
    background: rgba(20, 20, 30, 0.98);
    backdrop-filter: blur(20px);
    box-shadow: -5px 0 25px rgba(0, 0, 0, 0.5);
    z-index: 999;
    transition: var(--transition);
    padding: 80px 25px 30px;
    display: flex;
    flex-direction: column;
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.mobile-nav-link {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 1.1rem;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    gap: 15px;
    transition: var(--transition);
}

.mobile-nav-link i {
    width: 25px;
    color: var(--gold);
    font-size: 1.2rem;
}

.mobile-nav-link:hover {
    color: var(--light-gold);
    transform: translateX(5px);
}

.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.nav-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* 主容器 */
.container {
    max-width: 1200px;
    margin: 80px auto 40px;
    padding: 0 5%;
}

/* 标题区域 */
.header {
    text-align: center;
    margin-bottom: 40px;
    padding: 0 10px;
}

.title {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 15px;
    background: linear-gradient(to right, #fff, var(--light-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 0.5px;
    line-height: 1.2;
}

.subtitle {
    font-size: 0.95rem;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.divider {
    width: 60px;
    height: 3px;
    background: linear-gradient(to right, var(--gold), #b8860b);
    margin: 18px auto;
    border-radius: 2px;
}

/* 平台分区 */
.platform-section {
    margin-bottom: 40px;
    position: relative;
}

.platform-header {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.platform-title {
    font-size: 1.3rem;
    font-weight: 600;
    letter-spacing: 0.3px;
}

/* 卡片布局 */
.number-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.number-item {
    padding: 22px 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.number-item:hover {
    background: rgba(255, 255, 255, 0.06);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.number {
    font-size: 1.4rem;
    font-weight: 600;
    font-family: 'Courier New', monospace;
    letter-spacing: 1px;
    word-break: break-all;
    transition: var(--transition);
    line-height: 1.3;
    margin-bottom: 5px;
}

.number-desc {
    font-size: 0.85rem;
    color: var(--text-gray);
    opacity: 0.9;
    max-width: 300px;
    margin-top: 5px;
}

/* 平台主题色与渐变 */
.wechat-section .platform-title {
    background: linear-gradient(to right, var(--wechat), var(--gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.wechat-item {
    background: linear-gradient(145deg, rgba(7, 193, 96, 0.1), rgba(212, 175, 55, 0.05));
}

.wechat-item .number {
    background: linear-gradient(to right, var(--wechat), var(--light-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.qq-section .platform-title {
    background: linear-gradient(to right, var(--qq), var(--gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.qq-item {
    background: linear-gradient(145deg, rgba(25, 130, 209, 0.1), rgba(212, 175, 55, 0.05));
}

.qq-item .number {
    background: linear-gradient(to right, var(--qq), #a3d1ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.douyin-section .platform-title {
    background: linear-gradient(to right, var(--douyin), var(--gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.douyin-item {
    background: linear-gradient(145deg, rgba(255, 0, 80, 0.1), rgba(212, 175, 55, 0.05));
}

.douyin-item .number {
    background: linear-gradient(to right, var(--douyin), #ff7aa3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.email-section .platform-title {
    background: linear-gradient(to right, var(--email), var(--gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.email-item {
    background: linear-gradient(145deg, rgba(66, 133, 244, 0.1), rgba(212, 175, 55, 0.05));
}

.email-item .number {
    background: linear-gradient(to right, var(--email), #85b1ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.phone-section .platform-title {
    background: linear-gradient(to right, var(--phone), var(--light-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.phone-item {
    background: linear-gradient(145deg, rgba(212, 175, 55, 0.1), rgba(255, 219, 122, 0.05));
}

.phone-item .number {
    background: linear-gradient(to right, var(--phone), var(--light-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.xiaohongshu-section .platform-title {
    background: linear-gradient(to right, var(--xiaohongshu), #ff5f7d);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.xiaohongshu-item {
    background: linear-gradient(145deg, rgba(255, 36, 66, 0.1), rgba(212, 175, 55, 0.05));
}

.xiaohongshu-item .number {
    background: linear-gradient(to right, var(--xiaohongshu), #ff8fa3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.bilibili-section .platform-title {
    background: linear-gradient(to right, var(--bilibili), #ff9db5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.bilibili-item {
    background: linear-gradient(145deg, rgba(251, 114, 153, 0.1), rgba(212, 175, 55, 0.05));
}

.bilibili-item .number {
    background: linear-gradient(to right, var(--bilibili), #ffc0cb);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 40px 20px 25px;
    color: var(--text-gray);
    font-size: 0.85rem;
    margin-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer p {
    margin-top: 10px;
    font-size: 0.75rem;
    opacity: 0.7;
}

/* 响应式设计 - 平板优化 */
@media (min-width: 768px) {
    .navbar {
        padding: 20px 8%;
    }
    
    .logo {
        font-size: 1.6rem;
    }
    
    .logo i {
        font-size: 1.8rem;
    }
    
    .mobile-menu-btn {
        display: none;
    }
    
    .desktop-nav-links {
        display: flex;
    }
    
    .container {
        margin-top: 100px;
        margin-bottom: 50px;
        max-width: 1200px;
    }
    
    .title {
        font-size: 2.4rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
    
    .platform-header {
        margin-bottom: 25px;
    }
    
    .platform-title {
        font-size: 1.5rem;
    }
    
    /* 平板设备每行显示2个卡片 */
    .number-list {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .number-item {
        padding: 25px 20px;
        border-radius: 14px;
    }
    
    .number {
        font-size: 1.6rem;
    }
}

/* 响应式设计 - 桌面优化 */
@media (min-width: 992px) {
    .title {
        font-size: 2.8rem;
    }
    
    .platform-title {
        font-size: 1.7rem;
    }
    
    /* 桌面设备每行显示3个卡片 */
    .number-list {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .number {
        font-size: 1.8rem;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.number-item {
    animation: fadeIn 0.6s ease forwards;
    opacity: 0;
}

.number-item:nth-child(1) { animation-delay: 0.1s; }
.number-item:nth-child(2) { animation-delay: 0.2s; }
.number-item:nth-child(3) { animation-delay: 0.3s; }