/* ============================================
   UEExtractor Landing Page - Dark Theme
   ============================================ */

/* CSS Variables */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #0f0f18;
    --bg-tertiary: #15151f;
    --bg-card: rgba(20, 20, 30, 0.7);
    --bg-glass: rgba(255, 255, 255, 0.03);
    --border-color: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(168, 85, 247, 0.3);
    
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.4);
    
    --gradient-1: #a855f7;
    --gradient-2: #ec4899;
    --gradient-3: #8b5cf6;
    --gradient-text: linear-gradient(135deg, #a855f7, #ec4899);
    
    --accent-purple: #a855f7;
    --accent-pink: #ec4899;
    --accent-cyan: #06b6d4;
    --accent-green: #22c55e;
    --accent-orange: #f97316;
    --accent-yellow: #eab308;
    
    --font-mono: 'JetBrains Mono', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(168, 85, 247, 0.2);
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

/* Background Effects */
.bg-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--accent-purple);
    top: -200px;
    left: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--accent-pink);
    top: 50%;
    right: -150px;
    animation-delay: -7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: var(--accent-cyan);
    bottom: -100px;
    left: 30%;
    animation-delay: -14s;
}

.noise-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.015;
    pointer-events: none;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(50px, 50px) scale(1.1); }
    50% { transform: translate(-30px, 80px) scale(0.9); }
    75% { transform: translate(-50px, -30px) scale(1.05); }
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.lang-dropdown {
    position: relative;
    display: inline-block;
}

.lang-toggle {
    padding: 10px;
    border-radius: 8px;
}

.lang-menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 8px;
    display: none;
    flex-direction: column;
    gap: 4px;
    min-width: 140px;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 1000;
}

.lang-menu.show {
    display: flex !important;
    opacity: 1;
    transform: translateY(0);
}

.lang-option {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 10px 16px;
    text-align: left;
    border-radius: 8px;
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-fast);
    outline: none !important;
}

.lang-option:hover,
.lang-option:focus-visible {
    background: var(--bg-glass);
    color: var(--text-primary);
}

.lang-option.active {
    background: rgba(168, 85, 247, 0.15);
    color: var(--accent-purple);
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    width: 36px;
    height: 36px;
}

.nav {
    display: flex;
    gap: 32px;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

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

.nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-text);
    transition: var(--transition-normal);
}

.nav a:hover::after {
    width: 100%;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-normal);
    border: none;
    outline: none;
}

.btn-primary {
    background: var(--gradient-text);
    color: var(--text-primary);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(168, 85, 247, 0.4);
}

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

.btn-pc {
}

.btn-ghost:hover {
    background: var(--bg-glass);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    border-color: var(--accent-purple);
    background: rgba(168, 85, 247, 0.1);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    z-index: 999;
}

.mobile-menu.active {
    display: block;
}

.mobile-menu nav {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mobile-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1rem;
    padding: 12px;
    border-radius: 8px;
    transition: var(--transition-fast);
}

.mobile-menu a:hover {
    background: var(--bg-glass);
    color: var(--text-primary);
}

/* Mobile Menu Button Animation */
.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    position: relative;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease;
}

.badge-heart {
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.1s both;
}

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

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 540px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.tag {
    padding: 6px 14px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* Terminal */
.hero-terminal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    animation: fadeInRight 0.8s ease 0.2s both;
}

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

.terminal-dots {
    display: flex;
    gap: 8px;
}

.terminal-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--bg-card);
}

.terminal-dots span:nth-child(1) { background: #ff5f56; }
.terminal-dots span:nth-child(2) { background: #ffbd2e; }
.terminal-dots span:nth-child(3) { background: #27ca40; }

.terminal-title {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-left: auto;
}

.terminal-body {
    padding: 20px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    min-height: 280px;
}

.terminal-line {
    margin-bottom: 8px;
}

.prompt {
    color: var(--accent-cyan);
    margin-right: 8px;
}

.command {
    color: var(--text-primary);
}

.terminal-output {
    color: var(--text-muted);
    margin-bottom: 16px;
    padding-left: 16px;
    border-left: 2px solid var(--border-color);
    display: none;
}

.terminal-output.show {
    display: block;
    animation: fadeIn 0.3s ease;
}

.terminal-output .success {
    color: var(--accent-green);
}

.terminal-output .processing {
    color: var(--accent-yellow);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.file {
    color: var(--accent-purple);
}

.cursor-line {
    display: none;
}

.cursor-line.show {
    display: block;
}

.cursor {
    animation: cursorBlink 0.8s infinite;
    color: var(--accent-green);
}

@keyframes cursorBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

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

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

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

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--bg-secondary);
}

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

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    transition: var(--transition-normal);
}

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

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--accent-purple);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Formats Section */
.formats {
    padding: 80px 0;
}

.formats-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 60px;
    text-align: center;
}

.formats-content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.formats-content > p {
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.formats-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.format-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    transition: var(--transition-fast);
}

.format-item:hover {
    border-color: var(--accent-purple);
    transform: scale(1.05);
}

.format-ext {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--accent-purple);
    font-size: 0.9rem;
}

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

/* How It Works */
.how-it-works {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    position: relative;
}

.step {
    position: relative;
}

.step-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent-purple);
    opacity: 0.3;
    margin-bottom: 16px;
    font-family: var(--font-mono);
}

.step-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px;
    height: calc(100% - 60px);
}

.step-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.step-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 0.95rem;
}

.step-code {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 16px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.step-code code {
    color: var(--accent-cyan);
    overflow-x: auto;
}

.copy-btn {
    cursor: pointer;
    opacity: 0.6;
    transition: var(--transition-fast);
    font-size: 1rem;
}

.copy-btn:hover {
    opacity: 1;
}

.step-connector {
    position: absolute;
    top: 40px;
    right: -16px;
    width: calc(100% - 40px);
    height: 2px;
    background: linear-gradient(90deg, var(--accent-purple), transparent);
    opacity: 0.3;
}

.step:last-child .step-connector {
    display: none;
}

/* Usage Section */
.usage {
    padding: 100px 0;
}

.usage-tabs {
    max-width: 900px;
    margin: 0 auto;
}

.tab-buttons {
    display: flex;
    gap: 8px;
    margin-bottom: 32px;
    background: var(--bg-glass);
    padding: 6px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.tab-btn:hover {
    color: var(--text-primary);
}

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

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.usage-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.usage-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    transition: var(--transition-normal);
}

.usage-card:hover {
    border-color: var(--border-hover);
}

.usage-icon {
    width: 72px;
    height: 72px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--accent-purple);
}

.usage-icon svg {
    width: 36px;
    height: 36px;
}

.usage-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.usage-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.usage-card code {
    background: var(--bg-tertiary);
    padding: 4px 8px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-cyan);
}

.cli-commands {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.cli-command {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
}

.cli-command h4 {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 12px;
}

.cli-command code {
    display: block;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--accent-cyan);
}

.csv-structure {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
}

.csv-structure h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.csv-structure > p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.csv-example {
    overflow-x: auto;
    margin-bottom: 20px;
}

.csv-example table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

.csv-example th,
.csv-example td {
    padding: 12px 16px;
    text-align: left;
    border: 1px solid var(--border-color);
}

.csv-example th {
    background: var(--bg-tertiary);
    color: var(--text-muted);
    font-weight: 500;
}

.csv-example td.key {
    color: var(--accent-purple);
    font-size: 0.75rem;
    word-break: break-all;
}

.csv-example td.source {
    color: var(--text-primary);
}

.csv-example td.translation {
    color: var(--accent-green);
}

.csv-note {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* CLI Reference Section */
.cli-reference {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.cli-search {
    position: relative;
    max-width: 600px;
    margin: 0 auto 40px;
}

.cli-search input {
    width: 100%;
    padding: 16px 20px 16px 52px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: var(--transition-fast);
}

.cli-search input:focus {
    border-color: var(--accent-purple);
}

.cli-search input::placeholder {
    color: var(--text-muted);
}

.search-icon {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-muted);
}

.cli-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.cli-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px 24px;
    transition: var(--transition-fast);
}

.cli-item:hover {
    border-color: var(--border-hover);
}

.cli-item.hidden {
    display: none;
}

.cli-args {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.cli-args code {
    background: var(--bg-tertiary);
    padding: 6px 12px;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-cyan);
    border: 1px solid var(--border-color);
}

.cli-or {
    color: var(--text-muted);
    font-size: 0.85rem;
}

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

/* Preparation Section */
.preparation {
    padding: 100px 0;
}

.prep-tabs {
    max-width: 900px;
    margin: 0 auto;
}

.prep-tab-buttons {
    display: flex;
    gap: 8px;
    margin-bottom: 32px;
    background: var(--bg-glass);
    padding: 6px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.prep-tab-btn {
    flex: 1;
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.prep-tab-btn:hover {
    color: var(--text-primary);
}

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

.prep-pane {
    display: none;
}

.prep-pane.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.prep-step {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    margin-bottom: 20px;
    overflow: hidden;
}

.prep-step-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: var(--bg-glass);
    border-bottom: 1px solid var(--border-color);
}

.step-marker {
    width: 32px;
    height: 32px;
    background: var(--accent-purple);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
}

.step-marker.zen {
    background: var(--accent-cyan);
}

.prep-step-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.prep-step-body {
    padding: 24px;
}

.prep-step-body > p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.prep-tip {
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.3);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.prep-tip strong {
    color: var(--accent-cyan);
}

.prep-code {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    margin-bottom: 16px;
    color: var(--accent-cyan);
}

.prep-note {
    background: rgba(168, 85, 247, 0.1);
    border: 1px solid rgba(168, 85, 247, 0.3);
    border-radius: 8px;
    padding: 16px;
    color: var(--text-secondary);
}

.prep-note strong {
    color: var(--accent-purple);
}

.prep-warning {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(249, 115, 22, 0.1);
    border: 1px solid rgba(249, 115, 22, 0.3);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 20px;
    color: var(--accent-orange);
}

.prep-warning svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.prep-success {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: 8px;
    padding: 16px;
    color: var(--accent-green);
}

.prep-success svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.prep-methods {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.prep-method {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
}

.prep-method h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.prep-method p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.prep-method code {
    background: var(--bg-card);
    padding: 4px 8px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-purple);
}

.prep-file-tree {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.tree-item {
    padding: 4px 0;
}

.tree-indent {
    padding-left: 20px;
}

.folder {
    color: var(--accent-yellow);
}

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

/* Merging Section */
.merging {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.merging-content {
    display: flex;
    align-items: center;
    gap: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 48px;
}

.merging-icon {
    width: 120px;
    height: 120px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--accent-purple);
}

.merging-icon svg {
    width: 56px;
    height: 56px;
}

.merging-text h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.merging-text > p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.merge-logic {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.merge-rule {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 14px 20px;
    font-size: 0.9rem;
}

.rule-condition {
    color: var(--accent-yellow);
    font-weight: 500;
}

.rule-arrow {
    color: var(--text-muted);
}

.rule-result {
    color: var(--accent-green);
    margin-left: auto;
}

/* Download Section */
.download {
    padding: 100px 0;
}

.download-content {
    text-align: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 64px;
    position: relative;
    overflow: hidden;
}

.download-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-purple), var(--accent-pink), transparent);
}

.download-content h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.download-content > p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.download-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 32px;
}

.download-requirements {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.req-dot {
    color: var(--accent-purple);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 16px;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-column h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-column a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 6px 0;
    transition: var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin: 0 auto 32px;
    }

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

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

    .hero-terminal {
        max-width: 600px;
        margin: 0 auto;
    }

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

    .steps {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .step-connector {
        display: none;
    }

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

    .merging-content {
        flex-direction: column;
        text-align: center;
    }

    .merge-logic {
        align-items: center;
    }

    .rule-result {
        margin-left: 0;
    }
}

@media (max-width: 1200px) {
    .nav {
        display: none;
    }

    .header-actions .btn-pc {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

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

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

    .prep-methods {
        grid-template-columns: 1fr;
    }

    .download-content {
        padding: 40px 24px;
    }

    .download-actions {
        flex-direction: column;
    }

    .footer-content {
        flex-direction: column;
        gap: 40px;
    }

    .footer-links {
        gap: 40px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 2rem;
    }

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

    .btn-lg {
        width: 100%;
        justify-content: center;
    }

    .hero-tags {
        flex-direction: column;
        align-items: center;
    }

    .tab-buttons {
        flex-direction: column;
    }

    .formats-content {
        padding: 40px 24px;
    }

    .merging-content {
        padding: 32px 24px;
    }

    .formats-grid {
        gap: 12px;
    }

    .format-item {
        flex-direction: column;
        gap: 4px;
        padding: 10px 14px;
    }
}