/* 快喵VPN 官方网站 - 全局样式 */
/* 核心色彩：深空蓝黑渐变，品牌强调色：猫爪橙/霓虹青 */

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

:root {
    --bg-primary: #0B0F19;
    --bg-secondary: #1A2035;
    --bg-card: rgba(255, 255, 255, 0.05);
    --accent-orange: #FF6B35;
    --accent-cyan: #00E5FF;
    --text-primary: #FFFFFF;
    --text-secondary: #B0C4DE;
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.12);
    --shadow-glow: 0 8px 32px rgba(0, 229, 255, 0.15);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'DM Sans', 'Source Han Sans', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(11, 15, 25, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: 0 2rem;
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent-orange), var(--accent-cyan));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--accent-cyan);
}

.btn-primary {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-orange), #FF8F65);
    color: #fff;
    padding: 10px 24px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: transform 0.2s, box-shadow 0.2s;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.4);
}

.btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--accent-cyan);
    padding: 10px 24px;
    border-radius: 25px;
    font-weight: 600;
    font-size: 0.95rem;
    border: 2px solid var(--accent-cyan);
    transition: all 0.3s;
}

.btn-secondary:hover {
    background: rgba(0, 229, 255, 0.1);
    box-shadow: 0 4px 20px rgba(0, 229, 255, 0.2);
}

/* Hero Section */
.hero {
    position: relative;
    padding: 100px 2rem 80px;
    text-align: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at center, rgba(0, 229, 255, 0.08) 0%, transparent 60%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #fff 0%, var(--accent-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.trust-badges {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.trust-badge .icon {
    width: 24px;
    height: 24px;
    background: rgba(0, 229, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

/* Section Common */
.section {
    padding: 80px 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Feature Cards */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(0, 229, 255, 0.3);
}

.feature-card .icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-orange), var(--accent-cyan));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Stats */
.stats-row {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
    margin: 3rem 0;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.3rem;
}

/* Global Network Map */
.network-map {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.map-placeholder {
    width: 100%;
    height: 300px;
    background: radial-gradient(ellipse at center, rgba(0, 229, 255, 0.1) 0%, transparent 70%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 2rem 0;
    position: relative;
}

.map-dot {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-cyan);
}

/* Platform Support */
.platform-tabs {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.platform-tab {
    display: inline-block;
    padding: 10px 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 25px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: all 0.3s;
}

.platform-tab:hover, .platform-tab.active {
    background: rgba(0, 229, 255, 0.15);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.devices-showcase {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    padding: 2rem 0;
}

.device-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    width: 140px;
    transition: all 0.3s;
}

.device-item:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-3px);
}

.device-item .device-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.device-item .device-name {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    align-items: stretch;
}

.pricing-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: center;
    position: relative;
    transition: all 0.3s;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.pricing-card.popular {
    border-color: var(--accent-orange);
    background: rgba(255, 107, 53, 0.08);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--accent-orange), #FF8F65);
    color: #fff;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
}

.pricing-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.pricing-price {
    font-size: 2.5rem;
    font-weight: 800;
    margin: 1rem 0;
}

.pricing-price .currency {
    font-size: 1.2rem;
    vertical-align: super;
}

.pricing-price .period {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.pricing-features {
    list-style: none;
    margin: 1.5rem 0;
    text-align: left;
}

.pricing-features li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.pricing-features li::before {
    content: '\2713';
    color: var(--accent-cyan);
    font-weight: bold;
}

.pricing-refund {
    text-align: center;
    color: var(--text-secondary);
    margin-top: 2rem;
    font-size: 0.9rem;
}

/* FAQ */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.faq-item details {
    padding: 0;
}

.faq-item summary {
    padding: 1.2rem 1.5rem;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    list-style: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '\25BC';
    font-size: 0.8rem;
    color: var(--accent-cyan);
    transition: transform 0.3s;
}

.faq-item details[open] summary::after {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.5rem 1.2rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
}

.faq-answer ol {
    padding-left: 1.5rem;
    margin-top: 0.5rem;
}

.faq-answer ol li {
    margin-bottom: 0.3rem;
}

/* Testimonials */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.testimonial-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 1.5rem;
}

.testimonial-card .stars {
    color: #FFD700;
    margin-bottom: 0.5rem;
}

.testimonial-card .text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    font-style: italic;
}

.testimonial-card .author {
    display: flex;
    align-items: center;
    gap: 10px;
}

.testimonial-card .avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-orange), var(--accent-cyan));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.testimonial-card .author-info .name {
    font-weight: 600;
    font-size: 0.9rem;
}

.testimonial-card .author-info .location {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

/* Footer */
.site-footer {
    background: rgba(0, 0, 0, 0.3);
    border-top: 1px solid var(--glass-border);
    padding: 60px 2rem 30px;
}

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

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

.footer-col ul li {
    margin-bottom: 0.5rem;
}

.footer-col ul li a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color 0.3s;
}

.footer-col ul li a:hover {
    color: var(--accent-cyan);
}

.footer-bottom {
    border-top: 1px solid var(--glass-border);
    padding-top: 1.5rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.footer-bottom .disclaimer {
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: #666;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Media Links Section */
.media-wall {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
    margin: 2rem 0;
    opacity: 0.6;
}

.media-item {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

/* App logos section */
.app-logos {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin: 2rem 0;
}

.app-logo-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all 0.3s;
}

.app-logo-item:hover {
    border-color: var(--accent-cyan);
    color: var(--text-primary);
}

/* Breadcrumb */
.breadcrumb {
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.breadcrumb a {
    color: var(--accent-cyan);
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* Page Header */
.page-header {
    text-align: center;
    padding: 60px 2rem 40px;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #fff 0%, var(--accent-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Content Block */
.content-block {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.content-block h2 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    color: var(--accent-cyan);
}

.content-block h3 {
    font-size: 1.2rem;
    margin: 1.5rem 0 0.8rem;
}

.content-block p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.content-block ul, .content-block ol {
    color: var(--text-secondary);
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.content-block li {
    margin-bottom: 0.5rem;
}

/* Sitemap */
.sitemap-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

.sitemap-container ul {
    list-style: none;
    padding-left: 1.5rem;
}

.sitemap-container > ul {
    padding-left: 0;
}

.sitemap-container li {
    margin-bottom: 0.5rem;
}

.sitemap-container a {
    color: var(--accent-cyan);
    font-size: 0.95rem;
}

.sitemap-container a:hover {
    text-decoration: underline;
}

/* Hot Features Section */
.hot-features-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hot-features-text h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.hot-features-text p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.8;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero .subtitle {
        font-size: 1rem;
    }

    .nav-links {
        display: none;
    }

    .section {
        padding: 50px 1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .stats-row {
        gap: 1.5rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .hot-features-content {
        grid-template-columns: 1fr;
    }

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

    .header-inner {
        height: 60px;
    }

    .page-header h1 {
        font-size: 1.8rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.6rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }
}