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

:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --secondary: #8b5cf6;
    --accent: #06b6d4;
    --bg: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Grain Overlay */
.grain-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('data:image/svg+xml,<svg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"><filter id="noise"><feTurbulence type="fractalNoise" baseFrequency="0.9" numOctaves="4" stitchTiles="stitch"/></filter><rect width="100%" height="100%" filter="url(%23noise)" opacity="0.05"/></svg>');
    pointer-events: none;
    z-index: 9999;
    opacity: 0.4;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
}

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

.logo-icon {
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-4px); }
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: color 0.2s;
}

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

.nav-cta {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.2);
}

.mobile-menu {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text);
}

/* Hero */
.hero {
    padding: 160px 0 120px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    height: 1400px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 100px;
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 32px;
    box-shadow: var(--shadow-sm);
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: #10b981;
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

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

.hero-title {
    font-size: 72px;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
    color: var(--text);
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.7;
    max-width: 600px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 80px;
}

.btn-primary, .btn-secondary {
    padding: 16px 32px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    background: white;
    color: var(--text);
    border: 1px solid var(--border);
}

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

.btn-primary.large, .btn-secondary.large {
    padding: 20px 40px;
    font-size: 18px;
}

.hero-visual {
    margin-top: 60px;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.stat-box {
    background: white;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.stat-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    font-size: 48px;
}

.stat-value {
    font-size: 36px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-label {
    display: inline-block;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(139, 92, 246, 0.1));
    color: var(--primary);
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.section-title {
    font-size: 56px;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    color: var(--text);
}

.section-description {
    font-size: 20px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Features */
.features {
    padding: 120px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 32px;
    transition: all 0.3s;
    opacity: 0;
    transform: translateY(20px);
}

.feature-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.feature-card.large {
    grid-column: span 3;
    padding: 48px;
}

.feature-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.feature-icon-large {
    font-size: 56px;
}

.feature-header {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-bottom: 32px;
}

.feature-header h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
}

.feature-header p {
    color: var(--text-secondary);
    font-size: 16px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

.feature-visual {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 40px;
}

.execution-timeline {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.step-dot {
    width: 16px;
    height: 16px;
    background: var(--border);
    border-radius: 50%;
    margin: 0 auto 12px;
    transition: all 0.3s;
}

.timeline-step.active .step-dot {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    box-shadow: 0 0 20px rgba(37, 99, 235, 0.5);
}

.timeline-line {
    flex: 1;
    height: 2px;
    background: var(--border);
    margin: 0 16px;
    transition: all 0.3s;
}

.timeline-line.active {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.step-label {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 4px;
}

.step-time {
    font-size: 12px;
    color: var(--text-muted);
}

/* Methods */
.methods {
    padding: 120px 0;
    background: var(--bg-secondary);
}

.methods-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.method-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 40px;
    position: relative;
    transition: all 0.3s;
    opacity: 0;
    transform: translateY(20px);
}

.method-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.method-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.method-number {
    position: absolute;
    top: 24px;
    right: 24px;
    font-size: 56px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.1;
}

.method-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.method-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
}

.method-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.method-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
}

/* Chains */
.chains {
    padding: 120px 0;
}

.chains-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
}

.chain-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    transition: all 0.3s;
    opacity: 0;
    transform: scale(0.9);
}

.chain-card.animate-in {
    opacity: 1;
    transform: scale(1);
}

.chain-card:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.chain-logo {
    font-size: 48px;
    margin-bottom: 16px;
}

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

/* Bookmark Section */
.bookmark {
    padding: 120px 0;
    background: var(--bg-secondary);
}

.bookmark-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.bookmark-content h2 {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.bookmark-content > p {
    color: var(--text-secondary);
    font-size: 18px;
    line-height: 1.7;
    margin-bottom: 48px;
}

.bookmark-draggable {
    background: white;
    border: 2px dashed var(--primary);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    margin-bottom: 40px;
}

.draggable-bookmark {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 700;
    text-decoration: none;
    cursor: move;
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
    transition: transform 0.2s;
}

.draggable-bookmark:hover {
    transform: scale(1.05);
}

.drag-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 20px;
}

.bookmark-instructions {
    background: white;
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
}

.instruction-tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
}

.tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px;
    background: none;
    border: none;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
}

.tab-btn.active {
    color: var(--primary);
    background: var(--bg-secondary);
}

.tab-content {
    display: none;
    padding: 32px;
}

.tab-content.active {
    display: block;
}

.instruction-step {
    display: flex;
    gap: 20px;
    margin-bottom: 24px;
}

.instruction-step:last-child {
    margin-bottom: 0;
}

.step-number {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.step-text strong {
    display: block;
    margin-bottom: 4px;
    font-size: 16px;
}

.step-text p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

kbd {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2px 8px;
    font-family: monospace;
    font-size: 13px;
    font-weight: 600;
}

.bookmark-fallback {
    display: flex;
    align-items: center;
    gap: 8px;
    background: white;
    border: 2px solid var(--primary);
    color: var(--primary);
    padding: 14px 28px;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.bookmark-fallback:hover {
    background: var(--primary);
    color: white;
}

.bookmark-visual {
    position: relative;
}

.browser-mockup {
    background: white;
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.browser-bar {
    background: var(--bg-tertiary);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border);
}

.browser-dots {
    display: flex;
    gap: 6px;
}

.browser-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border);
}

.browser-address {
    flex: 1;
    background: white;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-muted);
}

.browser-bookmarks {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.bookmark-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: white;
    border-radius: 6px;
    font-size: 13px;
    color: var(--text-secondary);
}

.bookmark-item.highlight {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    animation: bookmark-pulse 2s ease-in-out infinite;
}

@keyframes bookmark-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* CTA */
.cta {
    padding: 120px 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.cta-content > p {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 24px;
}

.cta-note {
    color: var(--text-muted);
    font-size: 14px;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 80px 0 40px;
}

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

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-tagline {
    color: var(--text-secondary);
    font-size: 15px;
    max-width: 300px;
}

.footer-column h4 {
    font-weight: 700;
    margin-bottom: 16px;
    font-size: 14px;
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    margin-bottom: 12px;
    transition: color 0.2s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 8px;
}

.disclaimer {
    font-size: 13px;
}

/* Responsive */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-card.large {
        grid-column: span 2;
    }
    
    .bookmark-container {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .mobile-menu {
        display: block;
    }
    
    .nav-links {
        display: none;
    }
    
    .nav-links.active {
        display: flex;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
    }
    
    .hero-title {
        font-size: 48px;
    }
    
    .section-title {
        font-size: 36px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card.large {
        grid-column: span 1;
    }
    
    .methods-grid {
        grid-template-columns: 1fr;
    }
    
    .chains-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .browser-mockup {
        transform: scale(0.85);
    }
}