:root {
    --primary-color: #ff0050; /* Douyin red/pink */
    --secondary-color: #00f2ea; /* Douyin cyan */
    --dark-bg: #0b0b0d;
    --card-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-primary: #ffffff;
    --text-secondary: #a0a0a5;
    --container-max-width: 1200px;
    --transition-speed: 0.3s;
}

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

body {
    font-family: 'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-speed);
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Aurora Background */
.aurora-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    filter: blur(100px);
}

.aurora-bg::before,
.aurora-bg::after {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    opacity: 0.4;
    animation: move 20s infinite alternate;
}

.aurora-bg::before {
    background: var(--primary-color);
    top: -100px;
    left: -100px;
}

.aurora-bg::after {
    background: var(--secondary-color);
    bottom: -100px;
    right: -100px;
    animation-delay: -10s;
}

@keyframes move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(100px, 100px); }
}

/* Navbar */
.navbar {
    height: 80px;
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(11, 11, 13, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

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

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border-radius: 8px;
}

.logo-text span {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

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

/* Buttons */
.btn-primary, .btn-large {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    border: none;
    cursor: pointer;
}

.btn-large {
    padding: 1.2rem 2.5rem;
    font-size: 1.1rem;
    display: inline-block;
}

.btn-outline {
    border: 1px solid var(--glass-border);
    padding: 1.2rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Hero Section */
.hero {
    padding: 8rem 0 5rem;
    text-align: center;
}

.hero .badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    border: 1px solid var(--glass-border);
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.2;
    margin-bottom: 2rem;
}

.text-gradient {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto 3rem;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

/* Stats Section */
.stats {
    padding: 4rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.stat-value {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
}

/* Features Section */
.features {
    padding: 8rem 0;
}

.section-header-alt {
    text-align: center;
    margin-bottom: 5rem;
}

.badge-pill {
    display: inline-block;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.title-large {
    font-size: 4.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
    color: #fff;
}

.desc-text {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 900px;
    margin: 0 auto;
    opacity: 0.8;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.section-dash {
    width: 30px;
    height: 3px;
    background: var(--primary-color);
    margin: 0.5rem auto 2rem;
    border-radius: 2px;
}

.section-header p {
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 3rem;
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
}

.icon-box {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-secondary);
}

/* Services Section */
.services {
    padding: 5rem 0 8rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

.service-card {
    background: rgba(18, 18, 18, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    text-align: center;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.service-card:hover {
    background: rgba(25, 25, 25, 0.9);
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.service-badge {
    background: rgba(255, 0, 80, 0.15);
    color: var(--primary-color);
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.service-card h4 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
}

.service-card p {
    color: #888;
    font-size: 1rem;
    line-height: 1.5;
}

.contact-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto 3rem;
    opacity: 0.8;
}

/* Live Status Bar */
.live-status-bar {
    background: rgba(255, 0, 80, 0.05);
    border: 1px solid rgba(255, 0, 80, 0.3);
    box-shadow: 0 0 20px rgba(255, 0, 80, 0.1);
    border-radius: 100px;
    padding: 1.5rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

.live-status-bar:hover {
    background: rgba(255, 0, 80, 0.08);
    box-shadow: 0 0 30px rgba(255, 0, 80, 0.15);
    transform: translateY(-2px);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 12px;
}

.dot {
    width: 12px;
    height: 12px;
    background-color: #00ff88;
    border-radius: 50%;
    position: relative;
}

.dot.pulse::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #00ff88;
    border-radius: 50%;
    animation: pulse 2s infinite;
    opacity: 0.6;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.6; }
    100% { transform: scale(3); opacity: 0; }
}

.status-text {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.status-metrics {
    display: flex;
    gap: 3rem;
    text-align: center;
}

.metric {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.metric-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.metric-value {
    font-size: 1.1rem;
    font-weight: 600;
}

.metric-value.highlight {
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: 700;
}

.status-hint {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.status-hint .arrow {
    color: var(--primary-color);
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.live-status-bar:hover .status-hint .arrow {
    transform: translateX(5px);
}

/* Contact Card Updates */
.contact-card {
    background: linear-gradient(135deg, rgba(255, 0, 80, 0.1), rgba(0, 242, 234, 0.1));
    border: 1px solid var(--glass-border);
    border-radius: 40px;
    padding: 4rem;
    display: flex;
    justify-content: center;
    text-align: center;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-methods {
    margin-top: 2.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
}

.contact-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 1rem 2rem;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    gap: 1rem;
    min-width: 320px;
    justify-content: space-between;
}

.contact-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.contact-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--secondary-color);
    font-family: 'Inter', sans-serif;
}

.btn-copy-small {
    background: #fff;
    color: #000;
    padding: 0.4rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.85rem;
    border: none;
    cursor: pointer;
    transition: 0.2s;
}

.btn-copy-small:hover {
    background: var(--secondary-color);
    color: #000;
}

/* Footer */
.footer {
    padding: 4rem 0;
    border-top: 1px solid var(--glass-border);
    text-align: center;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.beian {
    font-size: 0.85rem;
    opacity: 0.6;
    margin-top: 0.5rem;
}

.beian a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.footer span {
    margin-left: 1rem;
    opacity: 0.6;
}

/* Responsive */
@media (max-width: 968px) {
    .hero h1 { font-size: 3rem; }
    .title-large { font-size: 2.5rem; }
    .contact-card { flex-direction: column; text-align: center; padding: 3rem; }
    .wechat-qr { justify-content: center; flex-direction: column; }
    .nav-links { display: none; }
}