/* iKuuu VPN Site10 - Teal Theme */
:root {
    --primary-color: #0d9488;
    --primary-dark: #0d9488;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --text-color: #1e293b;
    --text-light: #64748b;
    --bg-color: #ffffff;
    --bg-light: #f8fafc;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background: var(--bg-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    background: var(--bg-color);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-brand img {
    border-radius: 6px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #14b8a6 0%, #2dd4bf 100%);
    padding: 80px 0;
    color: white;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: white;
    color: var(--primary-color);
}

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

.btn-secondary {
    background: rgba(255,255,255,0.2);
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: var(--primary-color);
}

.hero-stats {
    display: flex;
    gap: 40px;
}

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

.stat-item strong {
    display: block;
    font-size: 2rem;
    font-weight: 700;
}

.stat-item span {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Simulator */
.hero-simulator {
    perspective: 1000px;
}

.simulator-window {
    background: #1e293b;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5);
    transform: rotateY(-5deg) rotateX(5deg);
}

.simulator-header {
    background: #334155;
    padding: 12px 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sim-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.sim-dot.red { background: #ef4444; }
.sim-dot.yellow { background: #f59e0b; }
.sim-dot.green { background: #10b981; }

.sim-title {
    margin-left: auto;
    color: #94a3b8;
    font-size: 0.85rem;
}

.simulator-body {
    padding: 25px;
    color: white;
}

.sim-status {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: rgba(16,185,129,0.1);
    border-radius: 8px;
    margin-bottom: 20px;
}

.sim-status.connected {
    border: 1px solid #10b981;
}

.status-icon {
    width: 24px;
    height: 24px;
    background: #10b981;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #334155;
}

.info-row .label {
    color: #94a3b8;
}

.info-row .value {
    font-weight: 600;
}

.sim-server-list {
    margin-top: 20px;
}

.server-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 8px;
    background: #334155;
    transition: all 0.3s;
}

.server-item.active {
    background: rgba(37,99,235,0.3);
    border: 1px solid #0d9488;
}

.server-item .flag {
    font-size: 1.2rem;
}

.server-item .name {
    flex: 1;
}

.server-item .ping {
    color: #10b981;
    font-size: 0.85rem;
}

/* Announcement */
.announcement {
    padding: 20px 0;
    background: var(--bg-light);
}

.announcement-card {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 20px;
    background: white;
    border-radius: 10px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary-color);
}

.ann-icon {
    font-size: 1.5rem;
}

.ann-content {
    flex: 1;
}

.ann-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    white-space: nowrap;
}

/* Section Styles */
.section-title {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.section-desc {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 50px;
    font-size: 1.1rem;
}

/* Node Speed */
.node-speed {
    padding: 80px 0;
    background: var(--bg-light);
}

.speed-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.speed-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.speed-card:hover {
    transform: translateY(-5px);
}

.speed-flag {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.speed-card h3 {
    margin-bottom: 15px;
    color: var(--text-color);
}

.speed-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.speed-value span {
    font-size: 1rem;
    color: var(--text-light);
}

.speed-bar {
    height: 8px;
    background: #e2e8f0;
    border-radius: 4px;
    margin: 15px 0;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 1s ease;
}

.speed-desc {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Features */
.features {
    padding: 80px 0;
}

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

.feature-card {
    padding: 30px;
    background: var(--bg-light);
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    background: white;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.feature-card h3 {
    margin-bottom: 15px;
    color: var(--text-color);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* Comparison */
.comparison {
    padding: 80px 0;
    background: var(--bg-light);
}

.comparison-table {
    overflow-x: auto;
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.comparison-table th {
    background: var(--primary-color);
    color: white;
    padding: 18px;
    text-align: left;
}

.comparison-table td {
    padding: 15px 18px;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

.comparison-table td.highlight {
    color: var(--primary-color);
    font-weight: 700;
    background: rgba(37,99,235,0.05);
}

/* Download */
.download {
    padding: 80px 0;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.download-card {
    background: var(--bg-light);
    padding: 30px 20px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s;
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    background: white;
}

.download-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.download-card h3 {
    margin-bottom: 10px;
}

.download-card .version {
    color: var(--text-light);
    font-size: 0.85rem;
    margin-bottom: 5px;
}

.download-card .system {
    color: var(--text-light);
    font-size: 0.85rem;
    margin-bottom: 20px;
}

.btn-download {
    background: var(--primary-color);
    color: white;
    width: 100%;
}

.btn-download:hover {
    background: var(--primary-dark);
}

/* Use Cases */
.use-cases {
    padding: 80px 0;
    background: var(--bg-light);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.case-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.case-card:hover {
    transform: translateY(-5px);
}

.case-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.case-card h3 {
    margin-bottom: 15px;
}

.case-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* FAQ */
.faq {
    padding: 80px 0;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.faq-item {
    background: var(--bg-light);
    padding: 30px;
    border-radius: 12px;
}

.faq-item h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.faq-steps {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.step {
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.step-num {
    width: 28px;
    height: 28px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.step p {
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

/* Reviews */
.reviews {
    padding: 80px 0;
    background: var(--bg-light);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.review-card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
}

.reviewer-avatar {
    width: 45px;
    height: 45px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
}

.reviewer-info {
    flex: 1;
}

.reviewer-info strong {
    display: block;
}

.review-date {
    color: var(--text-light);
    font-size: 0.85rem;
}

.review-rating {
    text-align: right;
}

.stars {
    color: #f59e0b;
}

.review-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* News */
.news {
    padding: 80px 0;
}

.news-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 10px 20px;
    border: none;
    background: var(--bg-light);
    border-radius: 25px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
}

.tab-btn.active, .tab-btn:hover {
    background: var(--primary-color);
    color: white;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.news-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.news-card:hover {
    transform: translateY(-5px);
}

.news-link {
    text-decoration: none;
    color: inherit;
}

.news-image {
    position: relative;
    height: 180px;
    background: linear-gradient(135deg, #14b8a6, #2dd4bf);
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-tag {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--primary-color);
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
}

.news-content {
    padding: 20px;
}

.news-content h3 {
    margin-bottom: 10px;
    font-size: 1.1rem;
    line-height: 1.4;
}

.news-excerpt {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-meta {
    display: flex;
    gap: 10px;
    color: var(--text-light);
    font-size: 0.85rem;
}

/* Bottom CTA */
.bottom-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, #14b8a6 0%, #2dd4bf 100%);
    color: white;
    text-align: center;
}

.bottom-cta h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.bottom-cta p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.btn-large {
    padding: 15px 35px;
    font-size: 1.1rem;
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-outline:hover {
    background: white;
    color: var(--primary-color);
}

/* Footer */
.footer {
    background: #1e293b;
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand img {
    border-radius: 6px;
    margin-bottom: 10px;
}

.footer-brand span {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.footer-brand p {
    color: #94a3b8;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.link-group h4 {
    margin-bottom: 15px;
    font-size: 1rem;
}

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

.link-group li {
    margin-bottom: 10px;
}

.link-group a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s;
}

.link-group a:hover {
    color: white;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid #334155;
    color: #94a3b8;
}

.sitemap-link a {
    color: #94a3b8;
    text-decoration: none;
}

.sitemap-link a:hover {
    color: white;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
    }
    
    .hero-simulator {
        display: none;
    }
    
    .speed-grid,
    .features-grid,
    .cases-grid,
    .reviews-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .download-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .speed-grid,
    .features-grid,
    .cases-grid,
    .reviews-grid,
    .faq-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .download-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .comparison-table {
        font-size: 0.85rem;
    }
}