/*
 * 算力云 - 导航栏和页脚样式
 * Navigation and Footer Styles
 * 优化版本 - 减少重复代码，提高性能
 */

/* ==================
   CSS变量定义
   ================== */
:root {
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    --gradient-primary-hover: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    --gradient-danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);

    /* 阴影 */
    --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 8px 25px rgba(59, 130, 246, 0.15);
    --shadow-dropdown: 0 40px 80px rgba(0, 0, 0, 0.08), 0 20px 40px rgba(47, 84, 235, 0.06);
    --shadow-dropdown-hover: 0 50px 100px rgba(0, 0, 0, 0.12), 0 25px 50px rgba(47, 84, 235, 0.08);

    /* 过渡 */
    --transition-base: all var(--duration-base);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-dropdown: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

/* ==================
   导航栏容器布局
   ================== */
.navbar-container {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-6);
    width: 100%;
    margin: 0;
    max-width: none;
}

/* ==================
   导航栏分区
   ================== */
.navbar-nav-left {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    flex: 0 0 auto;
    margin: 0;
    padding: 0;
}

.navbar-nav-center {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    flex: 0 0 auto;
    margin-right: 0;
    margin-left: auto;
}

/* ==================
   导航项通用样式
   ================== */
.navbar-item {
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    padding: var(--space-2) 0;
    transition: var(--transition-base);
    position: relative;
    white-space: nowrap;
}

.navbar-item:hover {
    color: var(--color-primary);
}

.navbar-item-secondary {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.navbar-item-secondary:hover {
    color: var(--color-primary);
}

/* HOT标识 */
.navbar-item-hot {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-semibold);
    position: relative;
}

.navbar-item-hot::after {
    content: 'HOT';
    position: absolute;
    top: -10px;
    right: -25px;
    background: linear-gradient(135deg, #ff4757 0%, #ff6b7a 50%, #ff4757 100%);
    color: white;
    font-size: 10px;
    font-weight: var(--font-weight-bold);
    padding: 3px 6px;
    border-radius: var(--radius-sm);
    line-height: 1;
    box-shadow: 0 2px 8px rgba(255, 71, 87, 0.4);
    animation: hot-pulse 2s ease-in-out infinite;
    z-index: 10;
    white-space: nowrap;
}

@keyframes hot-pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 2px 8px rgba(255, 71, 87, 0.4);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 3px 12px rgba(255, 71, 87, 0.6);
    }
}

.navbar-item-hot:hover {
    color: var(--color-primary);
}

.navbar-item-hot:hover::after {
    background: linear-gradient(135deg, #ff6348 0%, #ff8a80 50%, #ff6348 100%);
    animation-duration: 1s;
}

/* 控制台按钮 */
.navbar-item-console {
    background: var(--color-primary-500);
    color: var(--color-text-inverse);
    padding: var(--space-2) var(--space-6);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-medium);
    transition: var(--transition-base);
    font-size: var(--font-size-sm);
}

.navbar-item-console:hover {
    background: var(--color-primary-600);
    box-shadow: 0 4px 12px rgba(47, 84, 235, 0.3);
}

/* 登录注册按钮 */
.navbar-login,
.navbar-btn {
    display: inline-block;
    text-decoration: none;
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: var(--transition-base);
    white-space: nowrap;
    width: 80px;
    text-align: center;
}

.navbar-login {
    color: var(--color-primary-600);
    border: 2px solid var(--color-primary-200);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
}

.navbar-login:hover {
    color: var(--color-primary-700);
    background: var(--color-primary-50);
    border-color: var(--color-primary);
}

.navbar-btn {
    margin-right: var(--space-6);
}

.navbar-btn-primary {
    background: var(--gradient-primary);
    color: var(--color-white);
    border: 1px solid var(--color-primary);
    box-shadow: 0 4px 16px rgba(47, 84, 235, 0.2);
}

.navbar-btn-primary:hover {
    background: var(--gradient-primary-hover);
    box-shadow: 0 8px 32px rgba(47, 84, 235, 0.4);
}

/* ==================
   导航栏基础样式
   ================== */
.navbar {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 255, 0.98) 50%, rgba(255, 255, 255, 0.98) 100%);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--color-border-light);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-index-fixed);
    transition: var(--transition-base);
    overflow: visible;
}

/* 闪光动画 */
.navbar::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(47, 84, 235, 0.05), transparent);
    animation: navbar-shimmer 8s linear infinite;
}

@keyframes navbar-shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.navbar.scrolled {
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.12);
    background: linear-gradient(135deg, rgba(255, 255, 255, 1) 0%, rgba(248, 250, 255, 1) 50%, rgba(255, 255, 255, 1) 100%);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-text-primary);
    text-decoration: none;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-xl);
    transition: var(--transition-base);
    margin: 0;
    margin-right: var(--space-8);
    padding: 0;
}

.navbar-brand:hover {
    filter: drop-shadow(0 4px 12px rgba(47, 84, 235, 0.4));
}

.navbar-brand-logo {
    height: 40px;
    width: auto;
    transition: var(--transition-base);
    position: relative;
}

.navbar-brand-logo::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-lg);
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--duration-base);
}

.navbar-brand:hover .navbar-brand-logo::after {
    opacity: 0.1;
}

/* ==================
   下拉菜单
   ================== */
.navbar-dropdown-wrapper {
    position: relative;
}

.navbar-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    transform: translateY(-20px) scale(0.95) rotateX(-5deg);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(30px) saturate(200%);
    border-radius: var(--radius-3xl);
    box-shadow: var(--shadow-dropdown);
    border: 2px solid rgba(255, 255, 255, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-dropdown);
    min-width: 1100px;
    max-width: 1300px;
    z-index: 1050;
    margin-top: var(--space-6);
    overflow: hidden;
}

.navbar-item:hover .navbar-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1) rotateX(0deg);
    box-shadow: var(--shadow-dropdown-hover);
    border-color: rgba(255, 255, 255, 0.5);
}

.navbar-dropdown-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--space-6);
    min-height: 400px;
    padding: var(--space-6);
    position: relative;
}

.navbar-dropdown-grid::before {
    content: '';
    position: absolute;
    top: var(--space-4);
    bottom: var(--space-4);
    left: 280px;
    width: 1px;
    background: linear-gradient(180deg,
        transparent 0%,
        rgba(47, 84, 235, 0.1) 20%,
        rgba(47, 84, 235, 0.15) 50%,
        rgba(47, 84, 235, 0.1) 80%,
        transparent 100%);
}

.navbar-dropdown-column {
    padding: var(--space-4) var(--space-6);
    background: rgba(248, 250, 255, 0.4);
    border-radius: var(--radius-2xl);
    backdrop-filter: blur(15px);
    box-shadow: inset 0 2px 10px rgba(255, 255, 255, 0.5);
    border-right: 1px solid rgba(47, 84, 235, 0.08);
}

.navbar-dropdown-column h6 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin: 0 0 var(--space-4) 0;
    padding: var(--space-1) 0;
    position: relative;
}

.navbar-dropdown-column h6::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

.navbar-dropdown-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.navbar-dropdown-item {
    margin-bottom: var(--space-1);
}

/* ==================
   下拉菜单链接
   ================== */
.navbar-dropdown-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    padding: var(--space-3);
    border-radius: var(--radius-xl);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
}

.navbar-dropdown-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(47, 84, 235, 0.05), transparent);
    transition: left 0.5s ease;
}

.navbar-dropdown-link::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(47, 84, 235, 0.08) 0%, rgba(47, 84, 235, 0.04) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.navbar-dropdown-link:hover {
    color: var(--color-primary-700);
    border-color: rgba(47, 84, 235, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(47, 84, 235, 0.15);
}

.navbar-dropdown-link:hover::before {
    left: 100%;
}

.navbar-dropdown-link:hover::after {
    opacity: 1;
}

.navbar-dropdown-link.active {
    color: var(--color-primary-700);
    background: linear-gradient(135deg, rgba(47, 84, 235, 0.12) 0%, rgba(47, 84, 235, 0.08) 100%);
    font-weight: var(--font-weight-semibold);
    border-color: rgba(47, 84, 235, 0.3);
    box-shadow: 0 4px 20px rgba(47, 84, 235, 0.2);
    transform: translateY(-1px);
}

.navbar-dropdown-link span {
    position: relative;
    z-index: 1;
}

/* ==================
   图标样式（优化版）
   ================== */
.navbar-dropdown-icon {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    color: white;
    font-size: 1rem;
    line-height: 1;
    transition: var(--transition-smooth);
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* 图标颜色映射 */
.navbar-dropdown-link[data-content="cloud-server"] .navbar-dropdown-icon {
    background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
}
.navbar-dropdown-link[data-content="gpu-cloud"] .navbar-dropdown-icon {
    background: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
}
.navbar-dropdown-link[data-content="traffic-card"] .navbar-dropdown-icon {
    background: linear-gradient(135deg, #ef4444 0%, #f87171 100%);
}
.navbar-dropdown-link[data-content="cross-border"] .navbar-dropdown-icon {
    background: linear-gradient(135deg, #8b5cf6 0%, #a78bfa 100%);
}
.navbar-dropdown-link[data-content="ecommerce"] .navbar-dropdown-icon {
    background: linear-gradient(135deg, #06b6d4 0%, #22d3ee 100%);
}
.navbar-dropdown-link[data-content="container"] .navbar-dropdown-icon {
    background: linear-gradient(135deg, #0ea5e9 0%, #38bdf8 100%);
}
.navbar-dropdown-link[data-content="android-cloud"] .navbar-dropdown-icon {
    background: linear-gradient(135deg, #22c55e 0%, #4ade80 100%);
}

.navbar-dropdown-link:hover .navbar-dropdown-icon {
    transform: scale(1.1);
}

/* ==================
   下拉菜单右侧内容
   ================== */
.navbar-dropdown-content {
    padding: var(--space-4);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    min-width: 650px;
    background: rgba(248, 250, 255, 0.3);
    border-radius: var(--radius-2xl);
    backdrop-filter: blur(20px);
    box-shadow: inset 0 2px 15px rgba(255, 255, 255, 0.6);
    overflow: hidden;
}

.content-item {
    display: none;
    text-align: center;
    animation: fadeInUp 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.content-item.active {
    display: block;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ==================
   网格布局
   ================== */
.regions-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-3);
    margin: 0;
    width: 100%;
}

.gpu-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: var(--space-2);
    margin: 0;
    width: 100%;
}

.region-item,
.gpu-item {
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.95) 0%,
        rgba(248, 250, 255, 0.9) 50%,
        rgba(255, 255, 255, 0.85) 100%);
    border: 2px solid rgba(47, 84, 235, 0.1);
    border-radius: var(--radius-xl);
    text-align: center;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    backdrop-filter: blur(15px);
    box-shadow: var(--shadow-card);
    text-decoration: none;
    cursor: pointer;
    position: relative;
}

.region-item {
    padding: var(--space-1) var(--space-3);
    min-height: 36px;
    min-width: 85px;
}

.gpu-item {
    padding: var(--space-2);
    min-height: 38px;
    min-width: 75px;
}

.region-item:hover,
.gpu-item:hover {
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 1) 0%,
        var(--color-primary-50) 30%,
        var(--color-primary-100) 100%);
    border-color: var(--color-primary-400);
    color: var(--color-primary-800);
    box-shadow: 0 15px 40px rgba(47, 84, 235, 0.2);
    transform: translateY(-2px);
}

/* ==================
   GPU特殊算力按钮
   ================== */
.gpu-special-buttons {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-6);
    justify-content: center;
    flex-wrap: wrap;
}

.gpu-special-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    transition: var(--transition-smooth);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
    min-width: 120px;
    justify-content: center;
    text-align: center;
}

.gpu-special-btn::before {
    content: '';
    position: absolute;
    inset: 0 100% 0 -100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s ease;
}

.gpu-special-btn:hover::before {
    left: 100%;
}

.gpu-special-btn i,
.gpu-special-btn span {
    position: relative;
    z-index: 2;
}

.hkgpu-btn {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.hkgpu-btn:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 25px rgba(239, 68, 68, 0.4);
}

.twgpu-btn {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.twgpu-btn:hover {
    background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

/* ==================
   导航栏推广信息
   ================== */
.navbar-hero-promo {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 var(--space-4);
}

.navbar-hero-promo-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: #dc2626;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    padding: var(--space-2) var(--space-4);
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.08) 0%, rgba(220, 38, 38, 0.04) 100%);
    border: 1px solid #ef4444;
    border-radius: var(--radius-lg);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    max-width: 100%;
}

.navbar-hero-promo-link::before {
    content: '';
    position: absolute;
    inset: 0 100% 0 -100%;
    background: linear-gradient(90deg, transparent, rgba(239, 68, 68, 0.15), transparent);
    transition: left 0.6s ease;
}

.navbar-hero-promo-link:hover::before {
    left: 100%;
}

.navbar-hero-promo-link:hover {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.12) 0%, rgba(220, 38, 38, 0.08) 100%);
    border-color: #dc2626;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
}

.navbar-hero-promo-link i {
    font-size: var(--font-size-base);
    animation: navbar-pulse 2s ease-in-out infinite;
    flex-shrink: 0;
}

@keyframes navbar-pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

/* 导航栏推广信息响应式 */
@media (max-width: 1024px) {
    .navbar-hero-promo {
        display: none;
    }
}

/* ==================
   流量卡专用样式
   ================== */
#content-traffic-card {
    width: 100%;
    max-width: none;
    padding: 20px;
    background: #f8f9fa;
}

#content-traffic-card .plan-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    max-width: 600px;
    margin: 0 auto;
}

#content-traffic-card .plan-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 12px;
    position: relative;
    display: grid;
    grid-template-areas:
        "name name"
        "features price";
    grid-template-columns: 1fr auto;
    gap: 20px;
    transition: var(--transition-smooth);
}

#content-traffic-card .plan-card:hover {
    border-color: #3b82f6;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.15);
}

#content-traffic-card .plan-name {
    grid-area: name;
    font-size: 18px;
    font-weight: 600;
    color: #1f2937;
    margin: 0 0 16px 0;
    text-align: center;
}

#content-traffic-card .plan-info {
    grid-area: features;
}

#content-traffic-card .plan-action {
    grid-area: price;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    margin: 0;
}

#content-traffic-card .plan-features {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

#content-traffic-card .plan-feature {
    display: flex;
    align-items: center;
    font-size: 14px;
    color: #6b7280;
}

#content-traffic-card .plan-feature i {
    font-size: 16px;
    color: #3b82f6;
    margin-right: 8px;
}

#content-traffic-card .plan-price {
    text-align: right;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-width: 100px;
}

#content-traffic-card .price-amount {
    font-size: 24px;
    font-weight: 700;
    color: #000;
    line-height: 1;
}

#content-traffic-card .price-unit {
    font-size: 12px;
    color: #6b7280;
    margin-top: 2px;
    font-weight: 400;
}

#content-traffic-card .plan-btn {
    grid-column: 1 / -1;
    display: block;
    width: 100%;
    padding: 10px 20px;
    background: #2563eb;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    margin-top: 20px;
    box-sizing: border-box;
}

#content-traffic-card .plan-btn:hover {
    background: #1d4ed8;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

#content-traffic-card .plan-badge {
    display: none;
}

/* ==================
   页脚样式
   ================== */
.main-footer {
    background: linear-gradient(180deg, #1a202c 0%, #2d3748 100%);
    color: var(--color-text-inverse);
    padding: var(--space-20) 0 var(--space-8);
    position: relative;
    overflow: hidden;
}

.main-footer::before {
    content: '';
    position: absolute;
    inset: 0 0 auto 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
}

.footer-top {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: var(--space-16);
    margin-bottom: var(--space-12);
    padding-bottom: var(--space-8);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-info {
    max-width: 400px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-white);
    text-decoration: none;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-4);
    transition: var(--transition-base);
}

.footer-logo-img {
    height: 40px;
    width: auto;
    transition: var(--transition-base);
    filter: brightness(0) invert(1);
}

.footer-logo:hover .footer-logo-img {
    filter: brightness(0) invert(1) drop-shadow(0 4px 8px rgba(255, 255, 255, 0.3));
}

.footer-info p {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-6);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
}

.footer-contact-item i {
    color: var(--color-primary-400);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
}

.footer-column h4 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.footer-links-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links-list li {
    margin-bottom: var(--space-2);
}

.footer-links-list a,
.link-group a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--duration-base);
}

.footer-links-list a:hover,
.link-group a:hover {
    color: var(--color-primary-400);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: var(--font-size-xs);
}

.footer-bottom-left {
    display: flex;
    gap: var(--space-4);
}

.footer-bottom-left a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--duration-base);
}

.footer-bottom-left a:hover {
    color: var(--color-primary-400);
}

.footer-bottom-right {
    display: flex;
    align-items: center;
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.5);
}

/* ==================
   公告栏关闭按钮
   ================== */
.announcement-close-btn {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--color-white);
    font-size: 20px;
    cursor: pointer;
    opacity: 0.8;
    transition: opacity var(--duration-base);
}

.announcement-close-btn:hover {
    opacity: 1;
}

/* ==================
    移动端导航菜单
    ================== */

/* 汉堡包按钮 */
.navbar-hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    font-size: 24px;
    color: var(--color-text-primary);
    transition: var(--transition-base);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    align-items: center;
    justify-content: center;
}

.navbar-hamburger:hover {
    background: rgba(47, 84, 235, 0.1);
    color: var(--color-primary);
}

/* 移动端菜单 */
.navbar-mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-white);
    z-index: 999999;
    padding: 70px 16px 16px;
    overflow-y: auto;
    overflow-x: hidden;
    max-height: 100vh;
    max-width: 100vw;
    animation: slideInRight 0.3s ease-out;
    -webkit-overflow-scrolling: touch;
}

/* 当移动端菜单激活时，阻止body滚动 */
body.mobile-menu-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.navbar-mobile-menu.active {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    max-width: 100vw;
    max-height: 100vh;
    z-index: 999999;
    overflow-y: auto;
    overflow-x: hidden;
}

.navbar-mobile-close-btn {
    position: absolute;
    top: 16px;
    right: 30px;
    background: rgba(0, 0, 0, 0.05);
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--color-text-primary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
}

.navbar-mobile-close-btn:hover {
    background: rgba(0, 0, 0, 0.1);
    color: var(--color-primary);
}

/* 移动端菜单列表 */
.navbar-mobile-menu-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.navbar-mobile-menu-item {
    margin-bottom: var(--space-1);
}

.navbar-mobile-menu-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3);
    text-decoration: none;
    color: var(--color-text-primary);
    font-size: 15px;
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
    background: rgba(248, 250, 255, 0.5);
}

.navbar-mobile-menu-link:hover {
    background: rgba(47, 84, 235, 0.1);
    color: var(--color-primary);
    transform: translateX(5px);
}

.navbar-mobile-menu-link i {
    font-size: 18px;
    color: var(--color-primary-600);
}

/* ==================
   容器算力展示
   ================== */
.container-showcase {
    padding: var(--space-6);
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.98) 0%,
        rgba(248, 250, 255, 0.95) 100%);
    border-radius: var(--radius-lg);
}

.container-image {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-6);
}

.container-image img {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.container-features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.feature-card {
    background: white;
    border-radius: var(--radius-md);
    padding: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition-smooth);
    text-align: center;
}

.feature-card:hover {
    box-shadow: 0 8px 25px rgba(47, 84, 235, 0.15);
}

.feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-lg);
    font-size: 24px;
    flex-shrink: 0;
    margin: 0 auto var(--space-2);
}

.feature-content h4 {
    font-size: 18px;
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin: 0 0 8px 0;
}

.feature-content p {
    font-size: 14px;
    color: var(--color-gray-600);
    margin: 0;
}

.container-action {
    margin-top: var(--space-6);
    text-align: center;
}

.container-btn {
    display: inline-block;
    padding: var(--space-3) var(--space-8);
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-medium);
    font-size: 16px;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.2);
}

.container-btn:hover {
    background: var(--gradient-primary-hover);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
}

/* ==================
   响应式设计
   ================== */

/* 大屏幕 */
@media (max-width: 1400px) {
    .navbar-dropdown {
        min-width: 1000px;
        max-width: 1200px;
    }

    .navbar-dropdown-grid {
        grid-template-columns: 260px 1fr;
        gap: var(--space-5);
    }

    .navbar-dropdown-grid::before {
        left: 260px;
    }
}

/* 较小屏幕 - 隐藏部分菜单项以确保右侧按钮可见 */
@media (max-width: 1200px) {
    /* 隐藏"镜像市场"和"渠道合作"菜单项 */
    .navbar-nav-left .navbar-item:nth-child(6),
    .navbar-nav-left .navbar-item:nth-child(7) {
        display: none;
    }

    /* 隐藏"测速"和"文档" */
    .navbar-actions .navbar-item:nth-child(1),
    .navbar-actions .navbar-item:nth-child(2) {
        display: none;
    }

    .navbar-dropdown {
        min-width: 800px;
        max-width: 1000px;
    }
}

/* 小屏幕 - 进一步隐藏菜单项 */
@media (max-width: 1100px) {
    /* 隐藏"价格"菜单项 */
    .navbar-nav-left .navbar-item:nth-child(5) {
        display: none;
    }

    /* 隐藏"联系我们" */
    .navbar-actions .navbar-item:nth-child(3) {
        display: none;
    }

    /* 减小菜单项之间的间距 */
    .navbar-nav-left {
        gap: var(--space-4);
    }

    .navbar-actions {
        gap: var(--space-4);
    }

    .navbar-dropdown {
        min-width: 700px;
        max-width: 900px;
    }
}

/* 平板 */
@media (max-width: 1024px) {
    /* 隐藏中间辅菜单 */
    .navbar-nav-center {
        display: none;
    }

    .navbar-dropdown {
        min-width: 480px;
        max-width: 600px;
    }

    .navbar-dropdown-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-4);
    }

    .navbar-dropdown-grid::before {
        display: none;
    }

    .navbar-dropdown-column {
        border-right: none;
        border-bottom: 1px solid rgba(47, 84, 235, 0.08);
    }

    /* 页脚响应式 */
    .footer-top {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }

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

    /* 网格响应式 */
    .regions-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: var(--space-2);
    }

    .gpu-grid {
        grid-template-columns: repeat(6, 1fr);
        gap: var(--space-2);
    }
}

/* 手机 */
@media (max-width: 768px) {
    /* 导航栏基础样式 */
    .navbar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: var(--z-index-fixed);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    }

    .navbar-container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: var(--space-3) var(--space-2) var(--space-3) var(--space-4);
        gap: 0;
    }

    /* Logo区域 - 左侧 */
    .navbar-brand {
        width: auto;
        justify-content: flex-start;
        padding: 0;
        margin-right: 0;
        border-bottom: none;
        order: 1;
    }

    .navbar-brand-logo {
        height: 36px;
    }

    /* 右侧按钮组 - 包含汉堡包和登录按钮 */
    .navbar .navbar-actions {
        display: flex;
        align-items: center;
        gap: var(--space-2);
        order: 2;
        width: auto;
        padding: 0;
        flex-wrap: nowrap;
        margin-left: auto;
        flex: 0 0 auto;
    }

    /* 只显示登录按钮，隐藏其他按钮 */
    .navbar-actions .navbar-item:not(.navbar-login) {
        display: none;
    }

    .navbar .navbar-actions .navbar-login {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 0 var(--space-2);
        font-size: 13px;
        height: 28px;
        width: auto;
        min-width: 45px;
        line-height: 1;
        order: 2;
        border-radius: var(--radius-md);
        border-width: 1px;
    }

    /* 隐藏免费注册按钮 */
    .navbar-btn,
    .navbar-btn-primary,
    .navbar .navbar-actions .navbar-btn,
    .navbar .navbar-actions .navbar-btn-primary {
        display: none !important;
    }

    /* 汉堡包按钮 - 显示在导航栏最右侧 */
    .navbar-container .navbar-hamburger {
        display: flex;
        order: 3;
        margin-left: 0;
    }

    /* 隐藏桌面端导航 */
    .navbar-nav-left,
    .navbar-nav-center {
        display: none;
    }

    /* 确保移动端菜单可以正常显示 */
    .navbar-mobile-menu {
        display: none;
    }

    .navbar-mobile-menu.active {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100vw;
        height: 100vh;
        max-width: 100vw;
        max-height: 100vh;
        z-index: 999999;
        background: var(--color-white);
        padding: 70px 16px 16px;
        overflow-y: auto;
        overflow-x: hidden;
    }

    /* 下拉菜单 - 完全隐藏 */
    .navbar-dropdown-wrapper {
        display: none;
    }

    .navbar-dropdown {
        display: none;
    }

    /* 推广信息 - 移到页面顶部 */
    .navbar-hero-promo {
        display: none;
    }

    /* 网格布局优化 */
    .regions-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-2);
    }

    .gpu-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-2);
    }

    .region-item,
    .gpu-item {
        font-size: 12px;
        padding: var(--space-2);
        min-height: 40px;
        min-width: auto;
    }

    /* GPU特殊按钮 */
    .gpu-special-buttons {
        flex-direction: column;
        gap: var(--space-2);
        margin-top: var(--space-4);
    }

    .gpu-special-btn {
        width: 100%;
        min-width: auto;
        padding: var(--space-3) var(--space-4);
        font-size: 14px;
        min-height: 44px;
    }

    /* 流量卡布局 */
    #content-traffic-card .plan-grid {
        grid-template-columns: 1fr;
        gap: var(--space-3);
        max-width: 100%;
    }

    #content-traffic-card .plan-card {
        padding: var(--space-3);
    }

    /* 容器算力 */
    .container-showcase {
        padding: var(--space-3);
    }

    .container-image img {
        max-width: 100%;
    }

    .container-features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2);
    }

    .feature-card {
        padding: var(--space-3);
    }

    .feature-icon {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }

    .feature-content h4 {
        font-size: 16px;
    }

    .feature-content p {
        font-size: 13px;
    }

    /* 页脚优化 */
    .footer-top {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .footer-info {
        max-width: 100%;
        text-align: center;
    }

    .footer-logo {
        justify-content: center;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .link-group {
        text-align: center;
    }

    .link-group h4 {
        margin-bottom: var(--space-3);
    }

    .link-group ul {
        list-style: none;
        padding: 0;
    }

    .footer-qrcode {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: var(--space-2);
    }

    .footer-qrcode img {
        max-width: 120px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-3);
        text-align: center;
    }

    .footer-bottom-left {
        flex-direction: column;
        gap: var(--space-2);
    }

    .contact-info {
        display: flex;
        flex-direction: column;
        gap: var(--space-2);
        align-items: center;
    }
}

/* 小屏手机 */
@media (max-width: 480px) {
    /* 导航栏容器 */
    .navbar-container {
        padding: var(--space-2) var(--space-3);
        gap: var(--space-2);
    }

    /* Logo */
    .navbar-brand {
        padding: var(--space-1) 0;
    }

    .navbar-brand-logo {
        height: 32px;
    }

    /* 主导航 */
    .navbar-nav-left {
        gap: var(--space-2);
        padding: var(--space-2) 0;
    }

    .navbar-item {
        font-size: 13px;
        padding: var(--space-2);
        min-height: 32px;
        min-width: 60px;
    }

    /* HOT标识 */
    .navbar-item-hot::after {
        font-size: 8px;
        padding: 2px 4px;
        top: -6px;
        right: -16px;
    }

    /* 下拉菜单 */
    .navbar-dropdown {
        padding: var(--space-3);
        max-height: 75vh;
    }

    .navbar-dropdown-column {
        padding: var(--space-2);
    }

    .navbar-dropdown-column h6 {
        font-size: 12px;
    }

    .navbar-dropdown-link {
        padding: var(--space-2);
        font-size: 13px;
        min-height: 40px;
    }

    .navbar-dropdown-icon {
        width: 24px;
        height: 24px;
        font-size: 12px;
    }

    /* 推广信息 */
    .navbar-hero-promo-link {
        font-size: 11px;
        padding: var(--space-2);
        line-height: 1.3;
    }

    .navbar-hero-promo-link i {
        font-size: 12px;
    }

    /* 操作按钮 */
    .navbar .navbar-actions {
        gap: 0;
        margin-left: auto;
        flex: 0 0 auto;
    }

    .navbar-item-secondary {
        font-size: 12px;
        padding: var(--space-2);
        min-height: 32px;
    }

    .navbar .navbar-actions .navbar-login {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 12px;
        padding: 0 var(--space-2);
        height: 26px;
        min-width: 40px;
        line-height: 1;
        border-radius: var(--radius-md);
    }


    /* 小屏幕汉堡包按钮 */
    .navbar-hamburger {
        width: 36px;
        height: 36px;
        font-size: 20px;
    }

    /* 网格布局 */
    .regions-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-2);
    }

    .gpu-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-2);
    }

    .region-item,
    .gpu-item {
        font-size: 11px;
        padding: var(--space-2);
        min-height: 36px;
        min-width: auto;
    }

    /* GPU特殊按钮 */
    .gpu-special-btn {
        padding: var(--space-2) var(--space-3);
        font-size: 13px;
        min-height: 40px;
    }

    /* 流量卡 */
    #content-traffic-card .plan-card {
        padding: var(--space-2);
        gap: var(--space-2);
    }

    #content-traffic-card .plan-name {
        font-size: 16px;
        margin-bottom: var(--space-2);
    }

    #content-traffic-card .plan-feature {
        font-size: 12px;
    }

    #content-traffic-card .price-amount {
        font-size: 20px;
    }

    #content-traffic-card .plan-btn {
        font-size: 13px;
        padding: var(--space-2) var(--space-3);
        margin-top: var(--space-2);
    }

    /* 容器算力 */
    .container-showcase {
        padding: var(--space-2);
    }

    .container-image img {
        max-width: 100%;
    }

    .feature-icon {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }

    .feature-content h4 {
        font-size: 14px;
    }

    .feature-content p {
        font-size: 12px;
    }

    .container-btn {
        padding: var(--space-2) var(--space-4);
        font-size: 14px;
    }

    /* 页脚 */
    .footer-top {
        gap: var(--space-6);
    }

    .footer-info p {
        font-size: 13px;
    }

    .footer-qrcode img {
        max-width: 100px;
    }

    .footer-qrcode p {
        font-size: 12px;
    }

    .footer-bottom {
        font-size: 11px;
    }
}

/* 小屏手机 */
@media (max-width: 480px) {
    /* 导航栏容器 */
    .navbar-container {
        padding: var(--space-2) var(--space-2) var(--space-2) var(--space-2);
    }

    /* 汉堡包按钮 */
    .navbar-container .navbar-hamburger {
        margin-right: var(--space-3);
    }

    /* Logo */
    .navbar-brand-logo {
        height: 32px;
    }

    /* 网格布局 */
    .regions-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-2);
    }

    .gpu-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-2);
    }

    .region-item,
    .gpu-item {
        font-size: 11px;
        padding: var(--space-2);
        min-height: 36px;
    }

    /* GPU特殊按钮 */
    .gpu-special-btn {
        padding: var(--space-2) var(--space-3);
        font-size: 13px;
        min-height: 40px;
    }

    /* 流量卡 */
    #content-traffic-card .plan-card {
        padding: var(--space-2);
    }

    #content-traffic-card .plan-name {
        font-size: 16px;
    }

    #content-traffic-card .plan-feature {
        font-size: 12px;
    }

    #content-traffic-card .price-amount {
        font-size: 20px;
    }

    #content-traffic-card .plan-btn {
        font-size: 13px;
        padding: var(--space-2) var(--space-3);
    }

    /* 容器算力 */
    .container-showcase {
        padding: var(--space-2);
    }

    .feature-icon {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }

    .feature-content h4 {
        font-size: 14px;
    }

    .feature-content p {
        font-size: 12px;
    }

    .container-btn {
        padding: var(--space-2) var(--space-4);
        font-size: 14px;
    }

    /* 页脚 */
    .footer-qrcode img {
        max-width: 100px;
    }
}

/* 超小屏幕优化 */
@media (max-width: 360px) {
    /* 操作按钮 */
    .navbar .navbar-actions {
        gap: 0;
        margin-left: auto;
        flex: 0 0 auto;
    }

    /* 汉堡包按钮 */
    .navbar-container .navbar-hamburger {
        margin-right: 0;
    }

    .navbar-brand-logo {
        height: 28px;
    }

    .navbar .navbar-actions .navbar-login {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        font-size: 11px;
        padding: var(--space-1) var(--space-2);
        height: 24px;
        min-width: 38px;
        line-height: 1;
    }

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

    .region-item,
    .gpu-item {
        font-size: 10px;
        padding: var(--space-1);
        min-height: 32px;
    }
}