:root {
    --bg-color: #0a0a12;
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.1);
    --primary: #00f2ff;
    --secondary: #7000ff;
    --text-main: #ffffff;
    --text-muted: #8892b0;
    --gradient-main: linear-gradient(135deg, #00f2ff 0%, #7000ff 100%);
    --glow: 0 0 20px rgba(0, 242, 255, 0.3);
    --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

html {
    scroll-behavior: smooth;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* 动态背景网格 */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -2;
    transform: perspective(500px) rotateX(60deg) translateY(-100px) scale(2);
    animation: gridMove 20s linear infinite;
    pointer-events: none;
}

@keyframes gridMove {
    0% { transform: perspective(500px) rotateX(60deg) translateY(0) scale(2); }
    100% { transform: perspective(500px) rotateX(60deg) translateY(50px) scale(2); }
}

/* 背景光晕 */
.bg-glow {
    position: fixed;
    top: 50%;
    left: 50%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(112, 0, 255, 0.15) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    z-index: -1;
    pointer-events: none;
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.2); }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 6rem 1rem;
    position: relative;
}

.hero h1 {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #fff, #00f2ff);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px rgba(0, 242, 255, 0.3);
    animation: slideDown 1s ease-out;
}

.hero .tagline {
    font-size: clamp(1.2rem, 4vw, 1.8rem);
    color: var(--text-muted);
    margin-bottom: 3rem;
    max-width: 600px;
    animation: slideUp 1s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
    animation: fadeIn 1s ease-out 0.4s both;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
    font-size: 1.1rem;
    letter-spacing: 1px;
}

.btn-primary {
    background: transparent;
    color: #00f2ff;
    border: 1px solid #00f2ff;
    box-shadow: 0 0 10px rgba(0, 242, 255, 0.2);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 100%;
    background: #00f2ff;
    transition: width 0.3s ease;
    z-index: -1;
}

.btn-primary:hover {
    color: #000;
    box-shadow: 0 0 20px rgba(0, 242, 255, 0.6);
}

.btn-primary:hover::before {
    width: 100%;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 100%;
    background: rgba(255, 255, 255, 0.15);
    transition: width 0.3s ease;
    z-index: -1;
}

.btn-secondary:hover {
    border-color: #fff;
    transform: translateY(-2px);
}

.btn-secondary:hover::before {
    width: 100%;
}

/* Section Styles */
section {
    padding: 6rem 0;
}

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

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(to right, #fff, #a0a0a0);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

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

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 2.5rem;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 
                0 0 20px rgba(0, 242, 255, 0.1);
}

.card:hover::before {
    opacity: 1;
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #fff;
}

.card p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    color: var(--text-muted);
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
}

.feature-list li::before {
    content: '▹';
    color: var(--primary);
    margin-right: 10px;
}

/* Product Cards Specific */
.product-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.product-header {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.badge-orange { background: rgba(255, 165, 0, 0.2); color: #ffa500; border: 1px solid rgba(255, 165, 0, 0.3); }
.badge-red { background: rgba(255, 68, 68, 0.2); color: #ff4444; border: 1px solid rgba(255, 68, 68, 0.3); }

.btn-full {
    width: 100%;
    text-align: center;
    margin-top: auto;
    background: var(--gradient-main);
    color: white;
    border: none;
}

.btn-full:hover {
    opacity: 0.9;
    box-shadow: 0 0 20px rgba(112, 0, 255, 0.4);
}

/* Stats */
.about-content {
    max-width: 800px;
    margin: 0 auto 4rem;
    text-align: center;
}

.about-content p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-muted);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

@media (max-width: 992px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

.stat-card {
    text-align: center;
    padding: 2rem;
    background: rgba(255,255,255,0.02);
    border-radius: 15px;
    border: 1px solid rgba(255,255,255,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    border-color: rgba(255,255,255,0.1);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 0.5rem;
    text-shadow: 0 0 15px rgba(0, 242, 255, 0.3);
}

/* Contact */
.contact-buttons {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.contact-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 1rem 2rem;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.contact-btn:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

/* Footer */
footer {
    padding: 3rem 0;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.05);
    margin-top: 4rem;
}

footer h4 {
    color: white;
    margin-bottom: 0.5rem;
}

footer p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Animations */
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Mobile Adaptation */
@media (max-width: 768px) {
    .hero { padding: 4rem 1rem; }
    .hero h1 { font-size: 2.5rem; }
    .grid { grid-template-columns: 1fr; }
    .contact-buttons { flex-direction: column; }
    .contact-btn { width: 100%; justify-content: center; }
}