/* ========================================
   CSS Variables & Reset
   ======================================== */
:root {
    /* Colors - Terminal Aesthetic with Neon Accents */
    --color-bg-primary: #0a0e27;
    --color-bg-secondary: #121729;
    --color-bg-tertiary: #1a1f3a;

    --color-accent-cyan: #00f5ff;
    --color-accent-green: #00ff9f;
    --color-accent-purple: #b84cff;
    --color-accent-orange: #ff6b35;

    --color-text-primary: #e8e6e3;
    --color-text-secondary: #a8a6a3;
    --color-text-muted: #6b6966;

    --color-terminal-green: #00ff9f;
    --color-terminal-prompt: #00f5ff;

    /* Typography */
    --font-display: 'Syne', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    --font-code: 'Fira Code', monospace;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Effects */
    --blur-sm: 20px;
    --blur-md: 40px;
    --blur-lg: 80px;

    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ========================================
   Background Effects
   ======================================== */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0, 245, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 245, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
}

.bg-gradient-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(var(--blur-lg));
    opacity: 0.15;
    pointer-events: none;
    z-index: 0;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-accent-cyan), transparent);
    top: -200px;
    right: -200px;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--color-accent-purple), transparent);
    bottom: -150px;
    left: -150px;
    animation-delay: -10s;
}

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

/* ========================================
   Navigation
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 245, 255, 0.1);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-code);
    font-size: 1.2rem;
    font-weight: 600;
}

.terminal-prompt {
    color: var(--color-terminal-prompt);
    font-weight: 700;
}

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

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

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-green));
    transition: width var(--transition-fast);
}

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

.nav-link:hover::after {
    width: 100%;
}

.nav-link-github {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(0, 245, 255, 0.1);
    border: 1px solid rgba(0, 245, 255, 0.3);
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.nav-link-github:hover {
    background: rgba(0, 245, 255, 0.2);
    border-color: var(--color-accent-cyan);
    transform: translateY(-2px);
}

.nav-link-github::after {
    display: none;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    padding: 12rem 0 6rem;
    overflow: hidden;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(0, 255, 159, 0.1);
    border: 1px solid rgba(0, 255, 159, 0.3);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-accent-green);
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease-out;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent-green);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

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

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
    animation: fadeInUp 0.8s ease-out backwards;
}

.title-line:nth-child(1) { animation-delay: 0.1s; }
.title-line:nth-child(2) { animation-delay: 0.2s; }
.title-line:nth-child(3) { animation-delay: 0.3s; }

.title-highlight {
    background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-green), var(--color-accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: fadeInUp 0.8s ease-out backwards, gradientShift 8s ease infinite;
    animation-delay: 0.2s, 0s;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-description {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin-bottom: 3rem;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

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

/* Terminal */
.hero-terminal {
    max-width: 800px;
    background: rgba(18, 23, 41, 0.8);
    border: 1px solid rgba(0, 245, 255, 0.2);
    border-radius: 12px;
    overflow: hidden;
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(0, 245, 255, 0.1) inset;
    animation: fadeInUp 0.8s ease-out 0.5s backwards;
    margin-bottom: 4rem;
}

.terminal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background: rgba(26, 31, 58, 0.6);
    border-bottom: 1px solid rgba(0, 245, 255, 0.1);
}

.terminal-buttons {
    display: flex;
    gap: 0.5rem;
}

.terminal-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-btn-close { background: #ff5f57; }
.terminal-btn-minimize { background: #febc2e; }
.terminal-btn-maximize { background: #28c840; }

.terminal-title {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-code);
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.terminal-body {
    padding: 2rem;
    font-family: var(--font-code);
    font-size: 1rem;
}

.terminal-line {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.terminal-line .terminal-prompt {
    color: var(--color-accent-green);
    flex-shrink: 0;
}

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

.terminal-cursor {
    color: var(--color-accent-cyan);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

.terminal-output {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.8;
}

.output-line {
    opacity: 0;
    animation: fadeIn 0.3s ease-out forwards;
}

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

/* Hero Stats */
.hero-stats {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.6s backwards;
}

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

.stat-value {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 0.5rem;
}

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

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(0, 245, 255, 0.2);
}

/* ========================================
   Section Headers
   ======================================== */
.section-header {
    margin-bottom: 4rem;
    text-align: center;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.section-number {
    font-family: var(--font-code);
    font-size: 1.5rem;
    color: var(--color-accent-cyan);
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
}

/* ========================================
   Features Section
   ======================================== */
.features {
    padding: 6rem 0;
    position: relative;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    position: relative;
    padding: 2.5rem;
    background: rgba(18, 23, 41, 0.6);
    border: 1px solid rgba(0, 245, 255, 0.1);
    border-radius: 16px;
    transition: all var(--transition-normal);
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-green));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 245, 255, 0.3);
    background: rgba(18, 23, 41, 0.8);
    box-shadow:
        0 20px 60px rgba(0, 245, 255, 0.1),
        0 0 0 1px rgba(0, 245, 255, 0.2) inset;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.card-large {
    grid-column: span 2;
}

.card-accent {
    background: linear-gradient(135deg, rgba(0, 245, 255, 0.05), rgba(0, 255, 159, 0.05));
    border-color: rgba(0, 255, 159, 0.3);
}

.feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 245, 255, 0.1);
    border-radius: 12px;
    margin-bottom: 1.5rem;
    color: var(--color-accent-cyan);
    transition: all var(--transition-normal);
}

.feature-card:hover .feature-icon {
    background: rgba(0, 245, 255, 0.2);
    transform: scale(1.1) rotate(5deg);
}

.feature-icon svg {
    width: 32px;
    height: 32px;
}

.feature-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text-primary);
}

.feature-description {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    background: rgba(0, 255, 159, 0.1);
    border: 1px solid rgba(0, 255, 159, 0.3);
    border-radius: 6px;
    font-size: 0.85rem;
    font-family: var(--font-code);
    color: var(--color-accent-green);
}

/* ========================================
   Architecture Section
   ======================================== */
.architecture {
    padding: 6rem 0;
    background: linear-gradient(180deg, transparent, rgba(18, 23, 41, 0.5), transparent);
}

.architecture-diagram {
    max-width: 900px;
    margin: 0 auto 4rem;
}

.arch-layer {
    margin-bottom: 1rem;
}

.layer-label {
    font-family: var(--font-code);
    font-size: 0.85rem;
    color: var(--color-accent-cyan);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.layer-content {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.layer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.arch-block {
    padding: 1.5rem 2rem;
    background: rgba(18, 23, 41, 0.8);
    border: 1px solid rgba(0, 245, 255, 0.2);
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.arch-block::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 245, 255, 0.1), transparent);
    transition: left var(--transition-slow);
}

.arch-block:hover {
    border-color: var(--color-accent-cyan);
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(0, 245, 255, 0.2);
}

.arch-block:hover::before {
    left: 100%;
}

.block-small {
    font-size: 0.9rem;
}

.arch-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 1rem 0;
}

.connector-line {
    width: 2px;
    height: 30px;
    background: linear-gradient(180deg, var(--color-accent-cyan), var(--color-accent-green));
    opacity: 0.3;
}

.connector-arrow {
    color: var(--color-accent-cyan);
    font-size: 1.5rem;
    margin-top: -10px;
}

.architecture-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.arch-feature {
    text-align: center;
    padding: 2rem;
}

.arch-feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.arch-feature-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.arch-feature-desc {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* ========================================
   Quick Start Section
   ======================================== */
.quick-start {
    padding: 6rem 0;
}

.quick-start-content {
    max-width: 900px;
    margin: 0 auto;
}

.install-card {
    background: rgba(18, 23, 41, 0.6);
    border: 1px solid rgba(0, 245, 255, 0.2);
    border-radius: 16px;
    padding: 3rem;
    margin-bottom: 4rem;
}

.install-header {
    margin-bottom: 2rem;
}

.install-title {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

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

.code-block {
    background: rgba(10, 14, 39, 0.8);
    border: 1px solid rgba(0, 245, 255, 0.2);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 2rem;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: rgba(26, 31, 58, 0.6);
    border-bottom: 1px solid rgba(0, 245, 255, 0.1);
}

.code-lang {
    font-family: var(--font-code);
    font-size: 0.85rem;
    color: var(--color-accent-green);
    text-transform: uppercase;
}

.code-copy {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(0, 245, 255, 0.1);
    border: 1px solid rgba(0, 245, 255, 0.3);
    border-radius: 6px;
    color: var(--color-accent-cyan);
    font-family: var(--font-body);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.code-copy:hover {
    background: rgba(0, 245, 255, 0.2);
    transform: translateY(-2px);
}

.code-content {
    padding: 2rem 1.5rem;
    margin: 0;
    overflow-x: auto;
}

.code-content code {
    font-family: var(--font-code);
    font-size: 0.95rem;
    color: var(--color-terminal-green);
    line-height: 1.6;
}

/* Install Alternatives */
.install-alternatives {
    margin-top: 2rem;
}

.alternatives-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text-primary);
}

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

.alternative-item {
    padding: 1rem;
    background: rgba(10, 14, 39, 0.4);
    border: 1px solid rgba(0, 245, 255, 0.1);
    border-radius: 8px;
    transition: all var(--transition-fast);
}

.alternative-item:hover {
    border-color: rgba(0, 245, 255, 0.3);
    background: rgba(10, 14, 39, 0.6);
}

.alternative-highlight {
    border-color: rgba(0, 255, 159, 0.3);
    background: rgba(0, 255, 159, 0.05);
}

.alternative-label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
}

.alternative-code {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.alternative-code code {
    font-family: var(--font-code);
    font-size: 0.9rem;
    color: var(--color-accent-cyan);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.copy-btn-small {
    flex-shrink: 0;
    padding: 0.4rem;
    background: rgba(0, 245, 255, 0.1);
    border: 1px solid rgba(0, 245, 255, 0.2);
    border-radius: 4px;
    color: var(--color-accent-cyan);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.copy-btn-small:hover {
    background: rgba(0, 245, 255, 0.2);
    transform: scale(1.1);
}

.install-steps {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 4rem;
}

.step-item {
    flex: 1;
    display: flex;
    gap: 1.5rem;
}

.step-number {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-green));
    border-radius: 50%;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-bg-primary);
}

.step-content {
    flex: 1;
}

.step-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.step-desc {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.step-connector {
    flex: 0 0 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent-cyan), var(--color-accent-green));
    opacity: 0.3;
}

.supported-systems {
    text-align: center;
}

.supported-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
}

.systems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.system-item {
    padding: 2rem;
    background: rgba(18, 23, 41, 0.6);
    border: 1px solid rgba(0, 245, 255, 0.1);
    border-radius: 12px;
    transition: all var(--transition-normal);
}

.system-item:hover {
    border-color: var(--color-accent-cyan);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 245, 255, 0.15);
}

.system-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.system-name {
    font-weight: 500;
    color: var(--color-text-secondary);
}

/* ========================================
   Tutorial Section
   ======================================== */
.tutorial {
    padding: 6rem 0;
    background: linear-gradient(180deg, transparent, rgba(18, 23, 41, 0.3), transparent);
}

.tutorial-content {
    max-width: 1200px;
    margin: 0 auto;
}

.tutorial-category {
    margin-bottom: 5rem;
}

.category-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.category-icon {
    font-size: 2.5rem;
}

.category-title {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-accent-cyan), var(--color-accent-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.category-description {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.category-description code {
    padding: 0.2rem 0.5rem;
    background: rgba(0, 245, 255, 0.1);
    border: 1px solid rgba(0, 245, 255, 0.2);
    border-radius: 4px;
    font-family: var(--font-code);
    font-size: 0.9em;
    color: var(--color-accent-cyan);
}

/* Commands Table */
.commands-table {
    background: rgba(18, 23, 41, 0.4);
    border: 1px solid rgba(0, 245, 255, 0.2);
    border-radius: 12px;
    overflow: hidden;
}

.command-row {
    display: grid;
    grid-template-columns: 1.5fr 2fr 3fr;
    gap: 1.5rem;
    padding: 1.5rem;
    border-bottom: 1px solid rgba(0, 245, 255, 0.1);
    transition: background var(--transition-fast);
}

.command-row:last-child {
    border-bottom: none;
}

.command-row:not(.command-header):hover {
    background: rgba(0, 245, 255, 0.05);
}

.command-header {
    background: rgba(26, 31, 58, 0.8);
    font-weight: 600;
    color: var(--color-accent-cyan);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.command-name code,
.command-original code {
    padding: 0.3rem 0.6rem;
    background: rgba(0, 245, 255, 0.1);
    border: 1px solid rgba(0, 245, 255, 0.2);
    border-radius: 4px;
    font-family: var(--font-code);
    font-size: 0.9rem;
    color: var(--color-terminal-green);
}

.command-original em {
    color: var(--color-accent-purple);
    font-style: italic;
}

.command-desc {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.command-desc code {
    padding: 0.2rem 0.4rem;
    background: rgba(0, 255, 159, 0.1);
    border: 1px solid rgba(0, 255, 159, 0.2);
    border-radius: 3px;
    font-family: var(--font-code);
    font-size: 0.85em;
    color: var(--color-accent-green);
}

.command-highlight {
    background: linear-gradient(90deg, rgba(0, 255, 159, 0.05), rgba(0, 245, 255, 0.05));
    border-left: 3px solid var(--color-accent-green);
}

/* Features Tutorial Grid */
.features-tutorial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.tutorial-card {
    background: rgba(18, 23, 41, 0.6);
    border: 1px solid rgba(0, 245, 255, 0.1);
    border-radius: 12px;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.tutorial-card:hover {
    border-color: rgba(0, 245, 255, 0.3);
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 245, 255, 0.1);
}

.tutorial-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 2rem 2rem 1rem;
    background: linear-gradient(135deg, rgba(0, 245, 255, 0.05), rgba(0, 255, 159, 0.05));
}

.tutorial-icon {
    font-size: 2rem;
}

.tutorial-card-header h4 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 600;
}

.tutorial-card-body {
    padding: 1rem 2rem 2rem;
}

.tutorial-card-body p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.tutorial-card-body strong {
    color: var(--color-accent-cyan);
}

.tutorial-list {
    list-style: none;
    padding: 0;
}

.tutorial-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.tutorial-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-accent-green);
    font-weight: bold;
}

/* Tips Cards */
.tutorial-tips {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.tip-card {
    display: flex;
    gap: 1.5rem;
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid;
}

.tip-warning {
    background: rgba(255, 107, 53, 0.05);
    border-color: rgba(255, 107, 53, 0.3);
}

.tip-info {
    background: rgba(0, 245, 255, 0.05);
    border-color: rgba(0, 245, 255, 0.3);
}

.tip-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.tip-content {
    flex: 1;
}

.tip-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.tip-list {
    list-style: none;
    padding: 0;
}

.tip-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.tip-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-accent-cyan);
    font-size: 1.5rem;
    line-height: 1.2;
}

.tip-list strong {
    color: var(--color-text-primary);
    font-weight: 600;
}

.tip-list code {
    padding: 0.2rem 0.4rem;
    background: rgba(0, 245, 255, 0.1);
    border: 1px solid rgba(0, 245, 255, 0.2);
    border-radius: 3px;
    font-family: var(--font-code);
    font-size: 0.9em;
    color: var(--color-accent-cyan);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: 4rem 0 2rem;
    background: rgba(18, 23, 41, 0.4);
    border-top: 1px solid rgba(0, 245, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-code);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-tagline {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

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

.footer-section {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-heading {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text-primary);
}

.footer-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-accent-cyan);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 245, 255, 0.1);
}

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

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(0, 245, 255, 0.1);
    border: 1px solid rgba(0, 245, 255, 0.3);
    border-radius: 8px;
    color: var(--color-accent-cyan);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: rgba(0, 245, 255, 0.2);
    transform: translateY(-3px);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .card-large {
        grid-column: span 1;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .command-row {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .command-name,
    .command-original,
    .command-desc {
        display: block;
    }

    .tutorial-tips {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }

    .nav-container {
        height: 70px;
    }

    .nav-links {
        gap: 1rem;
    }

    .nav-link {
        font-size: 0.85rem;
    }

    .hero {
        padding: 8rem 0 4rem;
    }

    .hero-stats {
        gap: 1rem;
    }

    .stat-divider {
        display: none;
    }

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

    .install-steps {
        flex-direction: column;
        gap: 2rem;
    }

    .step-connector {
        display: none;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

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

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

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }

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

    .terminal-body {
        padding: 1.5rem;
        font-size: 0.9rem;
    }

    .install-card {
        padding: 2rem 1.5rem;
    }

    .tutorial-card-header,
    .tutorial-card-body {
        padding: 1.5rem;
    }

    .tip-card {
        flex-direction: column;
        gap: 1rem;
    }

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