/* CSS Variables */
:root {
    --primary: #00d4ff;
    --primary-dark: #0099cc;
    --secondary: #7c3aed;
    --accent: #06ffa5;
    --bg-dark: #0a0a1a;
    --bg-card: #12122a;
    --bg-light: #f8fafc;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-dark: #1e293b;
    --border-color: #1e293b;
    --gradient-1: linear-gradient(135deg, #00d4ff, #7c3aed);
    --gradient-2: linear-gradient(135deg, #7c3aed, #06ffa5);
    --shadow-glow: 0 0 20px rgba(0, 212, 255, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-dark);
    overflow-x: hidden;
}

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 26, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
    transition: all 0.3s ease;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary);
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo i {
    font-size: 2rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.btn-login {
    padding: 8px 24px;
    background: var(--gradient-1);
    border-radius: 25px;
    color: white !important;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.btn-login::after {
    display: none !important;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--primary);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: radial-gradient(ellipse at top left, rgba(0, 212, 255, 0.1), transparent 50%),
                radial-gradient(ellipse at bottom right, rgba(124, 58, 237, 0.1), transparent 50%);
}

.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0.5;
    animation: float 6s infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); opacity: 0.5; }
    50% { transform: translateY(-20px) translateX(10px); opacity: 1; }
}

.hero .container {
    display: flex;
    align-items: center;
    gap: 60px;
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.glitch {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    overflow-wrap: break-word;
    word-break: break-word;
}

.subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 50px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

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

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    display: block;
}

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

/* AI Brain Animation */
.ai-brain {
    position: relative;
    width: 300px;
    height: 300px;
}

.brain-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    background: var(--gradient-1);
    border-radius: 50%;
    box-shadow: 0 0 50px rgba(0, 212, 255, 0.5);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 50px rgba(0, 212, 255, 0.5); }
    50% { box-shadow: 0 0 100px rgba(0, 212, 255, 0.8); }
}

.orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 50%;
    animation: rotate 10s linear infinite;
}

.orbit-1 {
    width: 150px;
    height: 150px;
    margin: -75px 0 0 -75px;
}

.orbit-2 {
    width: 220px;
    height: 220px;
    margin: -110px 0 0 -110px;
    animation-duration: 15s;
    animation-direction: reverse;
}

.orbit-3 {
    width: 290px;
    height: 290px;
    margin: -145px 0 0 -145px;
    animation-duration: 20s;
}

.orbit .particle {
    position: absolute;
    top: -5px;
    left: 50%;
    width: 10px;
    height: 10px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent);
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--text-secondary);
    border-radius: 13px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 1; top: 8px; }
    100% { opacity: 0; top: 24px; }
}

/* Section Styles */
.section {
    padding: 100px 0;
    position: relative;
}

.section-dark {
    background: var(--bg-card);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 5px 20px;
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 15px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.about-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    border: 1px solid rgba(0, 212, 255, 0.1);
    transition: all 0.3s ease;
}

.about-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.about-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.about-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary);
}

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

.company-info {
    display: flex;
    gap: 60px;
    align-items: center;
    background: var(--bg-card);
    border-radius: 20px;
    padding: 50px;
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.info-content {
    flex: 1;
}

.info-content h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--primary);
}

.info-content p {
    color: var(--text-secondary);
    margin-bottom: 15px;
    line-height: 1.8;
}

.company-details {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 20px;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
}

.detail-item i {
    color: var(--primary);
}

.info-image {
    flex: 1;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.grid-item {
    aspect-ratio: 1;
    background: var(--gradient-1);
    border-radius: 15px;
    opacity: 0.2;
    animation: fadeInOut 3s infinite;
}

.grid-item:nth-child(2) { animation-delay: 0.5s; }
.grid-item:nth-child(3) { animation-delay: 1s; }
.grid-item:nth-child(4) { animation-delay: 1.5s; }
.grid-item:nth-child(5) { animation-delay: 2s; }
.grid-item:nth-child(6) { animation-delay: 2.5s; }

@keyframes fadeInOut {
    0%, 100% { opacity: 0.2; }
    50% { opacity: 0.5; }
}

/* Product Section */
.product-hero-section {
    margin-bottom: 60px;
}

.product-intro {
    display: flex;
    gap: 60px;
    align-items: center;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(124, 58, 237, 0.05));
    border-radius: 20px;
    padding: 50px;
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.intro-content {
    flex: 1;
}

.intro-content h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.text-gradient {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.intro-content p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.intro-content strong {
    color: var(--primary);
}

.product-highlights {
    list-style: none;
    margin-bottom: 25px;
}

.product-highlights li {
    padding: 8px 0 8px 30px;
    position: relative;
    color: var(--text-secondary);
}

.product-highlights .icon {
    position: absolute;
    left: 0;
    color: var(--primary);
}

.intro-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.intro-image {
    flex: 1;
}

.screenshot-frame {
    background: var(--bg-dark);
    border-radius: 15px;
    overflow: hidden;
    border: 2px solid rgba(0, 212, 255, 0.2);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease;
}

.screenshot-frame:hover {
    transform: scale(1.02);
}

.screenshot-frame img {
    width: 100%;
    height: auto;
    display: block;
}

.screenshot-caption {
    padding: 12px 15px;
    background: rgba(0, 0, 0, 0.3);
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-align: center;
}

/* Modules Showcase */
.modules-showcase {
    margin-bottom: 60px;
}

.section-subheader {
    text-align: center;
    margin-bottom: 40px;
}

.module-tag {
    display: inline-block;
    padding: 5px 20px;
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 15px;
}

.section-subheader h3 {
    font-size: 2rem;
    margin-bottom: 10px;
}

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

/* Module Tabs Navigation */
.module-tabs-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
    padding: 15px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 15px;
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.module-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: transparent;
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 10px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.module-tab:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--primary);
    color: var(--primary);
}

.module-tab.active {
    background: var(--gradient-1);
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.tab-icon {
    font-size: 1.1rem;
}

.tab-name {
    font-weight: 500;
}

/* Module Panels */
.module-panels {
    position: relative;
    min-height: 400px;
}

.module-panel {
    display: none;
    animation: fadeIn 0.5s ease;
}

.module-panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.panel-content {
    display: flex;
    gap: 40px;
    align-items: center;
    padding: 30px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 20px;
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.panel-text {
    flex: 1;
}

.module-badge {
    display: inline-block;
    padding: 5px 15px;
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.panel-text h4 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary);
}

.panel-text p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
    font-size: 1rem;
}

.panel-text ul {
    list-style: none;
}

.panel-text ul li {
    padding: 8px 0 8px 25px;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.panel-text ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

.panel-image {
    flex: 1;
}

.panel-image img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s ease;
}

.panel-image img:hover {
    transform: scale(1.03);
}

/* Responsive Module Tabs */
@media (max-width: 1024px) {
    .module-tabs-nav {
        gap: 8px;
        padding: 10px;
    }
    
    .module-tab {
        padding: 10px 15px;
        font-size: 0.85rem;
    }
}

@media (max-width: 768px) {
    .module-tabs-nav {
        justify-content: flex-start;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    
    .module-tabs-nav::-webkit-scrollbar {
        display: none;
    }
    
    .module-tab {
        flex-shrink: 0;
        padding: 10px 14px;
        font-size: 0.8rem;
    }
    
    .tab-name {
        display: none;
    }
    
    .tab-icon {
        font-size: 1.3rem;
    }
    
    .panel-content {
        flex-direction: column;
        padding: 20px;
    }
    
    .panel-text h4 {
        font-size: 1.3rem;
    }
}

/* Platforms Section */
.platforms-section {
    text-align: center;
    margin-top: 60px;
    padding: 50px 0;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(124, 58, 237, 0.05));
    border-radius: 20px;
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.platforms-section h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.platforms-section p {
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.platforms-grid {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.platform-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 25px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 50px;
    border: 1px solid rgba(0, 212, 255, 0.1);
    transition: all 0.3s ease;
}

.platform-item:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
}

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

.platform-item span {
    color: var(--text-secondary);
    font-weight: 500;
}

/* Download Section */
.download-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.download-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    border: 1px solid rgba(0, 212, 255, 0.1);
    transition: all 0.3s ease;
}

.download-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.download-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.download-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--primary);
}

.version-info, .system-req {
    color: var(--text-secondary);
    margin-bottom: 5px;
    font-size: 0.9rem;
}

.download-features {
    list-style: none;
    margin: 20px 0;
    text-align: center;
    display: inline-block;
}

.download-features li {
    padding: 8px 0;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    text-align: left;
}

.download-features li i {
    color: var(--accent);
    margin-right: 10px;
}

.btn-download {
    background: var(--gradient-1);
    color: white;
    padding: 12px 30px;
    border-radius: 25px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-decoration: none;
}

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

.download-note {
    display: block;
    margin-top: 10px;
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.download-guide {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.download-guide h3 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 40px;
    color: var(--primary);
}

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

.guide-step {
    text-align: center;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.guide-step::after {
    content: '';
    position: absolute;
    top: 25px;
    right: -15px;
    width: 30px;
    height: 2px;
    background: var(--gradient-1);
}

.guide-step:last-child::after {
    display: none;
}

.step-number {
    width: 50px;
    height: 50px;
    margin: 0 auto 15px;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.step-content {
    text-align: center;
}

.step-content h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--primary);
}

.step-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Tech Section */
.tech-stack {
    display: flex;
    flex-direction: column;
    gap: 40px;
    margin-bottom: 60px;
}

.tech-category {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.tech-category h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.tech-items {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.tech-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 15px;
    background: rgba(0, 212, 255, 0.05);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.tech-item:hover {
    background: rgba(0, 212, 255, 0.1);
}

.tech-name {
    font-weight: 600;
    color: var(--text-primary);
}

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

.tech-advantages h3 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 40px;
    color: var(--primary);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.advantage-item {
    text-align: center;
    padding: 30px 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 15px;
    border: 1px solid rgba(0, 212, 255, 0.1);
    transition: all 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.advantage-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 15px;
    background: var(--gradient-1);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.advantage-item h4 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--primary);
}

.advantage-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Login Section */
.login-container {
    display: flex;
    justify-content: center;
}

.login-box {
    width: 100%;
    max-width: 450px;
    background: var(--bg-card);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.login-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
}

.tab-btn {
    flex: 1;
    padding: 12px;
    background: transparent;
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 10px;
    color: var(--text-secondary);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn.active {
    background: var(--gradient-1);
    border-color: transparent;
    color: white;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-group label i {
    color: var(--primary);
}

.form-group input {
    width: 100%;
    padding: 15px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.2);
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.password-group {
    position: relative;
}

.toggle-password {
    position: absolute;
    right: 15px;
    top: 42px;
    color: var(--text-secondary);
    cursor: pointer;
}

.sms-input {
    display: flex;
    gap: 10px;
}

.sms-input input {
    flex: 1;
}

.btn-sms {
    padding: 15px 20px;
    background: var(--gradient-1);
    border: none;
    border-radius: 10px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.3s ease;
}

.btn-sms:hover {
    opacity: 0.9;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    cursor: pointer;
}

.remember-me input {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
}

.forgot-password {
    color: var(--primary);
    text-decoration: none;
    font-size: 0.9rem;
}

.forgot-password:hover {
    text-decoration: underline;
}

.btn-login-submit {
    width: 100%;
    justify-content: center;
    padding: 15px;
    font-size: 1.1rem;
}

.login-divider {
    display: flex;
    align-items: center;
    margin: 25px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.login-divider::before,
.login-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
}

.login-divider span {
    padding: 0 15px;
}

.social-login {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 25px;
}

.social-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 1px solid rgba(0, 212, 255, 0.2);
    background: transparent;
    color: var(--text-secondary);
    font-size: 1.3rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.social-btn.wechat:hover {
    background: #07c160;
    border-color: #07c160;
    color: white;
}

.social-btn.dingtalk:hover {
    background: #0089ff;
    border-color: #0089ff;
    color: white;
}

.login-footer {
    text-align: center;
    color: var(--text-secondary);
}

.login-footer a {
    color: var(--primary);
    text-decoration: none;
}

.demo-note {
    margin-top: 15px;
    padding: 10px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 8px;
    font-size: 0.85rem;
}

.demo-note i {
    margin-right: 5px;
    color: var(--primary);
}

.hidden {
    display: none;
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 15px;
    border: 1px solid rgba(0, 212, 255, 0.1);
    transition: all 0.3s ease;
}

.contact-item:hover {
    border-color: var(--primary);
    transform: translateX(5px);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: white;
}

.contact-text h4 {
    font-size: 1rem;
    margin-bottom: 5px;
    color: var(--primary);
}

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

.contact-form {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid rgba(0, 212, 255, 0.1);
}

.contact-form h3 {
    font-size: 1.5rem;
    margin-bottom: 25px;
    color: var(--primary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.contact-form .form-group {
    margin-bottom: 15px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 12px 15px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.contact-form select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2300d4ff' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 15px center;
}

.contact-form select option {
    background: var(--bg-dark);
    color: var(--text-primary);
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
.footer {
    background: var(--bg-dark);
    border-top: 1px solid rgba(0, 212, 255, 0.1);
    padding: 60px 0 30px;
}

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

.footer-brand .logo {
    display: inline-flex;
    margin-bottom: 15px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.8;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid rgba(0, 212, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    text-decoration: none;
}

.social-links a:hover {
    background: var(--gradient-1);
    border-color: transparent;
    color: white;
}

.footer-links h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--primary);
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-bottom a {
    color: var(--text-secondary);
    text-decoration: none;
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .stats {
        justify-content: center;
    }

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

    .company-info {
        flex-direction: column;
    }

    .product-hero {
        flex-direction: column;
    }

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

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

    .download-cards {
        grid-template-columns: 1fr;
    }

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

    .guide-step:nth-child(2)::after {
        display: none;
    }

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

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

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(10, 10, 26, 0.98);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        border-bottom: 1px solid rgba(0, 212, 255, 0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .glitch {
        font-size: 2.5rem;
    }

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

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

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

    .tech-items {
        grid-template-columns: 1fr;
    }

    .guide-steps {
        grid-template-columns: 1fr;
    }

    .guide-step::after {
        display: none;
    }

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

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

    .footer-bottom {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}

/* ===== 移动端（手机）专项适配 ===== */
@media (max-width: 768px) {
    /* 首屏：顶部预留固定导航高度，避免内容被导航遮挡 */
    .hero {
        min-height: calc(100vh - 0px);
        padding-top: 90px;
        padding-bottom: 70px;
    }
    .hero .container {
        gap: 30px;
    }
    .hero-content {
        width: 100%;
    }
    /* 标题字号与行高，避免 iOS 下换行产生重影 */
    .glitch {
        font-size: 2rem;
        line-height: 1.35;
        margin-bottom: 16px;
    }
    .subtitle {
        font-size: 1.2rem;
        line-height: 1.5;
    }
    .description {
        font-size: 1rem;
        line-height: 1.7;
        padding: 0 6px;
    }
    /* 按钮换行并撑满，避免贴边裁切 */
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
        gap: 14px;
        width: 100%;
        max-width: 320px;
        margin-left: auto;
        margin-right: auto;
    }
    .btn {
        justify-content: center;
        width: 100%;
        padding: 14px 20px;
        font-size: 0.95rem;
    }
    /* 指标紧凑排列 */
    .stats {
        gap: 18px;
        flex-wrap: wrap;
        justify-content: center;
    }
    .stat-number {
        font-size: 2rem;
    }
    /* 大屏脑图动画在窄屏隐藏，避免挤压首屏 */
    .hero-visual {
        display: none;
    }
    /* 滚动提示适当上移 */
    .scroll-indicator {
        bottom: 24px;
    }
    .scroll-indicator span {
        display: none;
    }
    /* 区块间距收紧 */
    .section {
        padding: 60px 0;
    }
    .section-header {
        margin-bottom: 40px;
        padding: 0 8px;
    }
    .section-header h2 {
        font-size: 1.7rem;
    }
    .section-header p {
        font-size: 1rem;
    }
    /* 卡片内边距收紧 */
    .about-card,
    .feature-card,
    .download-card {
        padding: 28px 22px;
    }
}

@media (max-width: 420px) {
    .glitch {
        font-size: 1.7rem;
    }
    .subtitle {
        font-size: 1.1rem;
    }
    .stat-number {
        font-size: 1.7rem;
    }
    .container {
        padding: 0 16px;
    }
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

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

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-1);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}