/* ==========================================================================
   xinghzhe.com - Main Stylesheet
   Cyber / Future-tech / Dark Mode Design System
   ========================================================================== */

/* CSS Variables */
:root {
    /* Color System */
    --bg-primary: #050810;
    --bg-secondary: #0a0f1c;
    --bg-tertiary: #111827;
    --bg-card: rgba(15, 23, 42, 0.7);
    --bg-glass: rgba(10, 15, 28, 0.6);

    --accent-cyan: #00f0ff;
    --accent-cyan-dim: #00b8c4;
    --accent-purple: #a855f7;
    --accent-magenta: #ff00aa;
    --accent-green: #00ff88;
    --accent-amber: #ffb800;
    --accent-red: #ff3860;

    --text-primary: #e6f1ff;
    --text-secondary: #a3b3cc;
    --text-tertiary: #6b7a99;
    --text-dim: #4a5874;
    --text-bright: #ffffff;

    --border-primary: rgba(0, 240, 255, 0.15);
    --border-bright: rgba(0, 240, 255, 0.4);
    --border-glass: rgba(255, 255, 255, 0.05);

    --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.3), 0 0 60px rgba(0, 240, 255, 0.1);
    --glow-purple: 0 0 20px rgba(168, 85, 247, 0.3), 0 0 60px rgba(168, 85, 247, 0.1);
    --glow-magenta: 0 0 20px rgba(255, 0, 170, 0.3), 0 0 60px rgba(255, 0, 170, 0.1);

    /* Typography */
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, Monaco, monospace;
    --font-sans: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-display: 'Orbitron', 'Inter', sans-serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Layout */
    --container-max: 1280px;
    --container-narrow: 960px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Effects */
    --grid-line: rgba(0, 240, 255, 0.06);
    --scanline: rgba(0, 240, 255, 0.03);
    --noise: rgba(255, 255, 255, 0.015);

    --header-height: 80px;
    --z-base: 1;
    --z-content: 10;
    --z-header: 100;
    --z-overlay: 500;
    --z-modal: 1000;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    overflow-x: hidden;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Global Background Layers */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: 0;
    pointer-events: none;
    opacity: 0.5;
}

body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at top, rgba(0, 240, 255, 0.08), transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(168, 85, 247, 0.06), transparent 50%),
        radial-gradient(ellipse at bottom left, rgba(255, 0, 170, 0.04), transparent 50%);
    z-index: -1;
    pointer-events: none;
    animation: gradient-shift 20s ease-in-out infinite alternate;
}

@keyframes gradient-shift {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-2%, 1%) scale(1.05); }
    100% { transform: translate(2%, -1%) scale(1); }
}

/* Scanline overlay */
.scanline-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    background: repeating-linear-gradient(
        to bottom,
        transparent 0,
        transparent 2px,
        var(--scanline) 3px,
        var(--scanline) 4px
    );
    opacity: 0.4;
    mix-blend-mode: overlay;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-bright);
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.25rem, 5vw, 4.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 2rem); }
h4 { font-size: clamp(1.1rem, 2vw, 1.5rem); }

p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

a {
    color: var(--accent-cyan);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-magenta);
}

code, pre, kbd {
    font-family: var(--font-mono);
    font-size: 0.9em;
}

::selection {
    background: var(--accent-cyan);
    color: var(--bg-primary);
}

/* Layout */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-xl);
    width: 100%;
    position: relative;
    z-index: var(--z-content);
}

.container-narrow {
    max-width: var(--container-narrow);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.section {
    padding: var(--space-4xl) 0;
    position: relative;
}

.section-sm {
    padding: var(--space-3xl) 0;
}

/* Header / Navigation */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    z-index: var(--z-header);
    background: rgba(5, 8, 16, 0.7);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-primary);
    transition: all var(--transition-base);
}

.site-header.scrolled {
    background: rgba(5, 8, 16, 0.92);
    border-bottom-color: var(--border-bright);
    box-shadow: 0 4px 30px rgba(0, 240, 255, 0.05);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    text-decoration: none;
}

.brand-logo {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.brand:hover .brand-logo {
    transform: rotate(180deg);
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.brand-name {
    font-family: var(--font-display);
    font-weight: 900;
    font-size: 1.15rem;
    color: var(--text-bright);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.brand-tagline {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent-cyan);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
 list-style: none;
}

.nav-link {
    display: inline-block;
    padding: 0.5rem 1rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    position: relative;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav-link::before {
    content: '> ';
    color: var(--accent-cyan);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-magenta));
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-cyan);
}

.nav-link:hover::before,
.nav-link.active::before {
    opacity: 1;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

.nav-cta {
    margin-left: var(--space-md);
    padding: 0.55rem 1.25rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--bg-primary);
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    border: none;
    border-radius: var(--radius-md);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-base);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0, 240, 255, 0.6);
    color: var(--bg-primary);
}

.mobile-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--border-bright);
    color: var(--accent-cyan);
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 8px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-3xl);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-inner {
    width: 100%;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--space-3xl);
    align-items: center;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    background: rgba(0, 240, 255, 0.08);
    border: 1px solid var(--border-bright);
    border-radius: 100px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-cyan);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--space-lg);
    animation: fade-in-up 0.8s 0.1s backwards;
}

.hero-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-cyan);
    box-shadow: 0 0 12px var(--accent-cyan);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.85); }
}

.hero h1 {
    margin-bottom: var(--space-lg);
    animation: fade-in-up 0.8s 0.2s backwards;
}

.hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-purple) 50%, var(--accent-magenta) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: gradient-flow 6s ease infinite;
}

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

.hero-subtitle {
    font-size: clamp(1.05rem, 1.5vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 580px;
    margin-bottom: var(--space-xl);
    animation: fade-in-up 0.8s 0.3s backwards;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    animation: fade-in-up 0.8s 0.4s backwards;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 1.75rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    color: var(--bg-primary);
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    box-shadow: 0 4px 20px rgba(0, 240, 255, 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 240, 255, 0.5);
    color: var(--bg-primary);
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.6s;
}

.btn-primary:hover::after {
    left: 100%;
}

.btn-ghost {
    color: var(--text-primary);
    background: transparent;
    border: 1px solid var(--border-bright);
    backdrop-filter: blur(10px);
}

.btn-ghost:hover {
    background: rgba(0, 240, 255, 0.08);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    transform: translateY(-3px);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-3xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-primary);
    animation: fade-in-up 0.8s 0.5s backwards;
}

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

.stat-value {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Hero visual */
.hero-visual {
    position: relative;
    height: 600px;
    animation: fade-in 1s 0.3s backwards;
}

.hero-visual-frame {
    position: absolute;
    inset: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-bright);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--glow-cyan), 0 30px 60px rgba(0,0,0,0.5);
    backdrop-filter: blur(20px);
}

.hero-visual-frame::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 40%, rgba(0, 240, 255, 0.15), transparent 50%),
        radial-gradient(circle at 70% 70%, rgba(168, 85, 247, 0.15), transparent 50%);
    z-index: 0;
}

.hero-visual img,
.hero-visual svg {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    position: relative;
    z-index: 1;
}

.hero-corner {
    position: absolute;
    width: 24px;
    height: 24px;
    border-color: var(--accent-cyan);
    border-style: solid;
    border-width: 0;
    z-index: 2;
}

.hero-corner.tl { top: -1px; left: -1px; border-top-width: 2px; border-left-width: 2px; }
.hero-corner.tr { top: -1px; right: -1px; border-top-width: 2px; border-right-width: 2px; }
.hero-corner.bl { bottom: -1px; left: -1px; border-bottom-width: 2px; border-left-width: 2px; }
.hero-corner.br { bottom: -1px; right: -1px; border-bottom-width: 2px; border-right-width: 2px; }

/* Floating data points */
.hero-floating-data {
    position: absolute;
    pointer-events: none;
    z-index: 3;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent-cyan);
    text-shadow: 0 0 8px var(--accent-cyan);
    opacity: 0.7;
}

.hero-floating-data.fd-1 { top: 8%; left: -10%; animation: float-data 6s ease-in-out infinite; }
.hero-floating-data.fd-2 { top: 28%; right: -5%; animation: float-data 6s 1s ease-in-out infinite; color: var(--accent-magenta); text-shadow: 0 0 8px var(--accent-magenta); }
.hero-floating-data.fd-3 { bottom: 18%; left: -8%; animation: float-data 6s 2s ease-in-out infinite; color: var(--accent-green); text-shadow: 0 0 8px var(--accent-green); }
.hero-floating-data.fd-4 { bottom: 4%; right: -12%; animation: float-data 6s 0.5s ease-in-out infinite; }

@keyframes float-data {
    0%, 100% { transform: translate(0, 0); }
    25% { transform: translate(8px, -12px); }
    50% { transform: translate(-4px, -6px); }
    75% { transform: translate(10px, 8px); }
}

/* Buttons in hero (scrolling indicator) */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
}

.scroll-indicator .mouse {
    width: 24px;
    height: 38px;
    border: 1px solid var(--border-bright);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator .mouse::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 6px;
    background: var(--accent-cyan);
    border-radius: 2px;
    animation: scroll-wheel 1.5s ease-in-out infinite;
}

@keyframes scroll-wheel {
    0% { transform: translate(-50%, 0); opacity: 1; }
    100% { transform: translate(-50%, 16px); opacity: 0; }
}

/* Section heading */
.section-heading {
    text-align: center;
    margin-bottom: var(--space-3xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-eyebrow {
    display: inline-block;
    padding: 0.35rem 1rem;
    background: rgba(168, 85, 247, 0.1);
    border: 1px solid rgba(168, 85, 247, 0.3);
    border-radius: 100px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-purple);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: var(--space-md);
}

.section-heading h2 {
    margin-bottom: var(--space-md);
    font-family: var(--font-display);
    letter-spacing: -0.01em;
}

.section-heading p {
    font-size: 1.05rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    position: relative;
    backdrop-filter: blur(12px);
    transition: all var(--transition-base);
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform var(--transition-base);
}

.card:hover {
    border-color: var(--border-bright);
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), var(--glow-cyan);
}

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

.card-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(0,240,255,0.15), rgba(168,85,247,0.15));
    border: 1px solid var(--border-bright);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    color: var(--accent-cyan);
}

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

.card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.card p {
    font-size: 0.95rem;
    margin-bottom: var(--space-md);
}

.card-list {
    list-style: none;
    padding: 0;
    margin: var(--space-md) 0 0;
}

.card-list li {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 0.35rem 0;
    padding-left: 1.25rem;
    position: relative;
}

.card-list li::before {
    content: '▸';
    color: var(--accent-cyan);
    position: absolute;
    left: 0;
}

/* Grid layouts */
.grid {
    display: grid;
    gap: var(--space-xl);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* App cards */
.app-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    position: relative;
}

.app-card:hover {
    border-color: var(--border-bright);
    transform: translateY(-8px);
    box-shadow: var(--glow-cyan), 0 30px 50px rgba(0,0,0,0.5);
}

.app-thumb {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
}

.app-thumb svg {
    width: 100%;
    height: 100%;
    display: block;
}

.app-thumb::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, var(--bg-card) 100%);
    pointer-events: none;
}

.app-body {
    padding: var(--space-lg);
}

.app-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.app-meta .dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--text-tertiary);
}

.app-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
}

.app-card p {
    font-size: 0.85rem;
    margin-bottom: 0;
}

/* Footer */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-primary);
    padding: var(--space-3xl) 0 var(--space-xl);
    position: relative;
    margin-top: var(--space-4xl);
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
    opacity: 0.4;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
}

.footer-brand .brand {
    margin-bottom: var(--space-md);
}

.footer-brand p {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    max-width: 280px;
}

.footer-col h4 {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent-cyan);
    margin-bottom: var(--space-md);
}

.footer-col ul {
    list-style: none;
    padding: 0;
}

.footer-col li {
    margin-bottom: 0.5rem;
}

.footer-col a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
    text-decoration: none;
}

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

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-primary);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.footer-bottom-links {
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

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

.footer-bottom-links a:hover {
    color: var(--accent-cyan);
}

.footer-contact-row {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.footer-contact-row span {
    font-family: var(--font-mono);
    color: var(--accent-cyan);
    margin-right: 0.5rem;
}

/* Utility */
.text-gradient {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-bright { color: var(--text-bright); }
.text-mono { font-family: var(--font-mono); }

.mt-0 { margin-top: 0; }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }

.mb-0 { margin-bottom: 0; }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

/* Reveal animations */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* Keyframes */
@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fade-in-up {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slide-in-left {
    from { opacity: 0; transform: translateX(-40px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slide-in-right {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

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

@keyframes glow-pulse {
    0%, 100% { box-shadow: var(--glow-cyan); }
    50% { box-shadow: 0 0 30px rgba(0, 240, 255, 0.5), 0 0 80px rgba(0, 240, 255, 0.2); }
}

@keyframes typewriter {
    from { width: 0; }
    to { width: 100%; }
}

@keyframes blink-caret {
    from, to { border-color: transparent; }
    50% { border-color: var(--accent-cyan); }
}

/* Canvas particle background */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.5;
    pointer-events: none;
}

/* Page title (sub-page hero) */
.page-title {
    padding: calc(var(--header-height) + var(--space-4xl)) 0 var(--space-3xl);
    text-align: center;
    position: relative;
    background:
        radial-gradient(ellipse at center top, rgba(0, 240, 255, 0.08), transparent 60%);
    border-bottom: 1px solid var(--border-primary);
}

.page-title h1 {
    font-family: var(--font-display);
    margin-bottom: var(--space-md);
}

.page-title .breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0.4rem 1rem;
    background: rgba(0,240,255,0.05);
    border: 1px solid var(--border-primary);
    border-radius: 100px;
}

.page-title .breadcrumb a {
    color: var(--accent-cyan);
    text-decoration: none;
}

.page-title .subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 720px;
    margin: var(--space-md) auto 0;
}

/* Forms */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.form-group {
    margin-bottom: var(--space-md);
    position: relative;
}

.form-group label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.form-control {
    width: 100%;
    padding: 0.85rem 1rem;
    background: rgba(0, 240, 255, 0.03);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    transition: all var(--transition-base);
    backdrop-filter: blur(8px);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-cyan);
    background: rgba(0, 240, 255, 0.06);
    box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 140px;
}

/* Contact cards */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

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

.contact-card .label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.contact-card .label svg {
    width: 16px;
    height: 16px;
}

.contact-card .value {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--text-bright);
    word-break: break-word;
}

.contact-card .desc {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    margin-top: 0.5rem;
    margin-bottom: 0;
}

/* Service detail */
.service-detail {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: var(--space-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    transition: all var(--transition-base);
    margin-bottom: var(--space-xl);
    align-items: start;
}

.service-detail:hover {
    border-color: var(--border-bright);
    box-shadow: var(--glow-cyan);
}

.service-detail .icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(0,240,255,0.2), rgba(168,85,247,0.2));
    border: 1px solid var(--border-bright);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-cyan);
}

.service-detail .icon svg {
    width: 40px;
    height: 40px;
}

.service-detail h3 {
    font-family: var(--font-display);
    margin-bottom: var(--space-sm);
}

.service-detail .tag {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    background: rgba(168,85,247,0.1);
    border: 1px solid rgba(168,85,247,0.3);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--accent-purple);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

.service-detail p {
    margin-bottom: var(--space-sm);
}

.service-detail .features {
    list-style: none;
    padding: 0;
    margin-top: var(--space-md);
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.4rem;
}

.service-detail .features li {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding-left: 1.25rem;
    position: relative;
}

.service-detail .features li::before {
    content: '✓';
    color: var(--accent-cyan);
    position: absolute;
    left: 0;
    font-weight: 700;
}

/* News */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.news-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-bright);
    box-shadow: var(--glow-cyan);
}

.news-thumb {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    position: relative;
    overflow: hidden;
}

.news-thumb svg {
    width: 100%;
    height: 100%;
}

.news-thumb::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, var(--bg-card) 100%);
}

.news-body {
    padding: var(--space-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-meta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

.news-card h3 {
    font-size: 1.15rem;
    margin-bottom: var(--space-sm);
}

.news-card p {
    font-size: 0.9rem;
    margin-bottom: var(--space-md);
    flex: 1;
}

.news-link {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.news-link:hover {
    color: var(--accent-magenta);
}

.news-link svg {
    width: 14px;
    height: 14px;
    transition: transform var(--transition-fast);
}

.news-link:hover svg {
    transform: translateX(4px);
}

/* Privacy/Terms document */
.legal-doc {
    padding: var(--space-3xl) 0;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    margin-bottom: var(--space-xl);
    backdrop-filter: blur(12px);
}

.legal-doc h2 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    color: var(--accent-cyan);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-primary);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.legal-doc h2:first-of-type {
    margin-top: 0;
}

.legal-doc h3 {
    font-size: 1.1rem;
    color: var(--text-bright);
    margin-top: var(--space-md);
    margin-bottom: var(--space-sm);
}

.legal-doc h4 {
    font-size: 0.95rem;
    color: var(--text-bright);
    margin-top: var(--space-sm);
    margin-bottom: 0.4rem;
}

.legal-doc p,
.legal-doc li {
    font-size: 0.92rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.legal-doc ul,
.legal-doc ol {
    padding-left: var(--space-xl);
    margin-bottom: var(--space-md);
}

.legal-doc ul li,
.legal-doc ol li {
    margin-bottom: 0.4rem;
}

.legal-doc strong {
    color: var(--text-bright);
    font-weight: 600;
}

.legal-doc code {
    background: rgba(0, 240, 255, 0.08);
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    color: var(--accent-cyan);
}

.legal-doc table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--space-md);
    font-size: 0.85rem;
}

.legal-doc table th,
.legal-doc table td {
    padding: 0.6rem 0.8rem;
    border: 1px solid var(--border-primary);
    text-align: left;
    color: var(--text-secondary);
}

.legal-doc table th {
    background: rgba(0,240,255,0.06);
    color: var(--accent-cyan);
    font-family: var(--font-mono);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
}

.legal-doc .doc-meta {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    padding: var(--space-md);
    background: rgba(0, 240, 255, 0.04);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
}

.legal-doc .doc-meta div {
    font-family: var(--font-mono);
    font-size: 0.75rem;
}

.legal-doc .doc-meta strong {
    display: block;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.65rem;
    margin-bottom: 0.3rem;
}

.legal-doc .doc-meta span {
    color: var(--text-bright);
    font-size: 0.85rem;
    font-family: var(--font-sans);
}

.legal-toc {
    background: rgba(0, 240, 255, 0.03);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.legal-toc h4 {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
}

.legal-toc ol {
    columns: 2;
    column-gap: var(--space-xl);
    list-style: decimal-leading-zero;
    margin: 0;
    padding-left: var(--space-xl);
}

.legal-toc li {
    margin-bottom: 0.3rem;
}

.legal-toc a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
}

.legal-toc a:hover {
    color: var(--accent-cyan);
}

/* Timeline (news detail) */
.timeline {
    position: relative;
    margin-left: var(--space-xl);
    padding-left: var(--space-2xl);
    border-left: 2px solid var(--border-primary);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--space-2xl);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.5rem;
    top: 0.4rem;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: 2px solid var(--accent-cyan);
    box-shadow: 0 0 12px var(--accent-cyan);
}

.timeline-item .date {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

.timeline-item h3 {
    margin-bottom: var(--space-sm);
}

.timeline-item p {
    font-size: 0.95rem;
}

/* Highlight Box */
.highlight-box {
    background: linear-gradient(135deg, rgba(0,240,255,0.06), rgba(168,85,247,0.06));
    border: 1px solid var(--border-bright);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin: var(--space-md) 0;
    position: relative;
    overflow: hidden;
}

.highlight-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent-cyan), var(--accent-magenta));
}

/* CTA banner */
.cta-banner {
    background: linear-gradient(135deg, rgba(0,240,255,0.08), rgba(168,85,247,0.08));
    border: 1px solid var(--border-bright);
    border-radius: var(--radius-lg);
    padding: var(--space-3xl);
    text-align: center;
    margin: var(--space-3xl) 0;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple), var(--accent-magenta));
    opacity: 0.1;
    filter: blur(40px);
    z-index: -1;
}

.cta-banner h2 {
    margin-bottom: var(--space-md);
}

.cta-banner p {
    max-width: 600px;
    margin: 0 auto var(--space-lg);
}

/* Achievement counters */
.metric-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition-base);
}

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

.metric-number {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-magenta));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.metric-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Code terminal */
.code-terminal {
    background: rgba(0,0,0,0.5);
    border: 1px solid var(--border-bright);
    border-radius: var(--radius-md);
    overflow: hidden;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    backdrop-filter: blur(8px);
}

.terminal-header {
    background: rgba(0, 240, 255, 0.08);
    padding: 0.5rem 1rem;
    border-bottom: 1px solid var(--border-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.terminal-dot.red { background: #ff5f57; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green { background: #28c941; }

.terminal-title {
    margin-left: 0.5rem;
    color: var(--text-tertiary);
    font-size: 0.75rem;
}

.terminal-body {
    padding: var(--space-md);
    color: var(--text-secondary);
    line-height: 1.6;
}

.terminal-body .prompt {
    color: var(--accent-cyan);
}

.terminal-body .kw { color: var(--accent-purple); }
.terminal-body .str { color: var(--accent-green); }
.terminal-body .num { color: var(--accent-amber); }
.terminal-body .com { color: var(--text-dim); font-style: italic; }
.terminal-body .ok { color: var(--accent-green); }

/* Tech strip */
.tech-strip {
    overflow: hidden;
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--border-primary);
    border-bottom: 1px solid var(--border-primary);
    background: var(--bg-glass);
    position: relative;
}

.tech-strip::before,
.tech-strip::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 80px;
    z-index: 2;
    pointer-events: none;
}

.tech-strip::before {
    left: 0;
    background: linear-gradient(90deg, var(--bg-primary), transparent);
}

.tech-strip::after {
    right: 0;
    background: linear-gradient(-90deg, var(--bg-primary), transparent);
}

.tech-track {
    display: flex;
    gap: var(--space-3xl);
    animation: scroll-track 30s linear infinite;
    white-space: nowrap;
    align-items: center;
}

.tech-track .item {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.tech-track .item svg {
    width: 20px;
    height: 20px;
    color: var(--accent-cyan);
}

@keyframes scroll-track {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/* Glow line */
.glow-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--accent-magenta), var(--accent-cyan), transparent);
    margin: var(--space-3xl) 0;
    opacity: 0.6;
}

/* Section specific: features split */
.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.split-visual {
    position: relative;
    aspect-ratio: 4/3;
    border: 1px solid var(--border-bright);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--glow-cyan);
}

.split-visual svg {
    width: 100%;
    height: 100%;
}

/* Map */
.map-container {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-bright);
    box-shadow: var(--glow-cyan);
    background: var(--bg-secondary);
    position: relative;
}

.map-container svg {
    width: 100%;
    height: 100%;
}

/* Loading bar */
.loading-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-magenta));
    z-index: 9999;
    width: 0;
    transition: width 0.3s ease;
    box-shadow: 0 0 12px var(--accent-cyan);
}

.loading-bar.active {
    animation: loading-progress 1.5s ease-out forwards;
}

@keyframes loading-progress {
    from { width: 0; }
    to { width: 100%; }
}

/* Cursor highlight (custom) */
.reading-progress {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-cyan), var(--accent-magenta));
    z-index: 999;
    transition: width 0.1s ease-out;
}

/* Cookie banner */
.cookie-banner {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    max-width: 380px;
    background: var(--bg-card);
    border: 1px solid var(--border-bright);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    backdrop-filter: blur(20px);
    box-shadow: 0 10px 40px rgba(0,0,0,0.5), var(--glow-cyan);
    z-index: 999;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transform: translateY(200%);
    transition: transform var(--transition-base);
}

.cookie-banner.show {
    transform: translateY(0);
}

.cookie-banner a {
    color: var(--accent-cyan);
    text-decoration: underline;
}

.cookie-banner .actions {
    margin-top: var(--space-md);
    display: flex;
    gap: 0.5rem;
}

.cookie-banner .btn-mini {
    padding: 0.4rem 0.9rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    color: var(--bg-primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

/* Mobile drawer */
.mobile-drawer {
    position: fixed;
    top: 0;
    right: -100%;
    width: 320px;
    max-width: 90vw;
    height: 100%;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-primary);
    z-index: 999;
    padding: var(--space-2xl);
    transition: right var(--transition-base);
    overflow-y: auto;
}

.mobile-drawer.open {
    right: 0;
}

.mobile-drawer .close-drawer {
    background: transparent;
    border: 1px solid var(--border-primary);
    color: var(--accent-cyan);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    margin-bottom: var(--space-lg);
}

.mobile-drawer ul {
    list-style: none;
    padding: 0;
}

.mobile-drawer li {
    margin-bottom: var(--space-sm);
}

.mobile-drawer a {
    display: block;
    padding: 0.7rem 1rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    border-left: 2px solid transparent;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.mobile-drawer a:hover,
.mobile-drawer a.active {
    border-left-color: var(--accent-cyan);
    color: var(--accent-cyan);
    background: rgba(0,240,255,0.05);
}

.drawer-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 998;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
    backdrop-filter: blur(4px);
}

.drawer-backdrop.show {
    opacity: 1;
    pointer-events: auto;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-inner { grid-template-columns: 1fr; }
    .hero-visual { height: 400px; }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .metric-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .split { grid-template-columns: 1fr; }
    .legal-toc ol { columns: 1; }
    .service-detail { grid-template-columns: 1fr; }
    .service-detail .icon { width: 60px; height: 60px; }
    .service-detail .features { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    :root { --header-height: 64px; }
    .main-nav { display: none; }
    .mobile-toggle { display: flex; align-items: center; justify-content: center; }
    .nav-cta { display: none; }
    .hero { min-height: 90vh; padding-top: calc(var(--header-height) + var(--space-xl)); }
    .hero-stats { grid-template-columns: 1fr; gap: var(--space-md); }
    .hero-visual { height: 280px; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .metric-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; gap: var(--space-xl); }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
    .form-row { grid-template-columns: 1fr; }
    .legal-doc .doc-meta { grid-template-columns: 1fr; }
    .section { padding: var(--space-3xl) 0; }
    .container { padding: 0 var(--space-md); }
}

@media (max-width: 480px) {
    h1 { font-size: clamp(1.85rem, 8vw, 2.5rem); }
    .hero-actions .btn { width: 100%; }
    .metric-grid { grid-template-columns: 1fr; }
}

/* Accessibility - reduce motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .tech-track { animation: none; }
    body::after { animation: none; }
}

@media (prefers-reduced-motion: no-preference) {
    html { scroll-behavior: smooth; }
}

/* Visually Hidden Utility (a11y) */
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.visually-hidden:focus {
    position: static !important;
    width: auto !important;
    height: auto !important;
    clip: auto !important;
    margin: 1rem !important;
    padding: 0.5rem 1rem !important;
    background: var(--accent-cyan) !important;
    color: var(--bg-primary) !important;
    z-index: 1000;
}

/* Print */
@media print {
    .site-header,
    .site-footer,
    .scroll-indicator,
    .loading-bar,
    .reading-progress,
    .cookie-banner,
    .mobile-drawer,
    .drawer-backdrop,
    #particle-canvas,
    .scanline-overlay { display: none !important; }
    body { background: white; color: black; }
    .container { max-width: 100%; }
}