/* ============================================
   Sony BVM-HX3110 Product Site
   Design System & Stylesheet
   ============================================ */

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

:root {
    /* Color palette - Dark + Neon */
    --bg-base: #0A0E1A;
    --bg-elevated: #0F1524;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-neon: rgba(0, 212, 255, 0.25);
    --border-neon-strong: rgba(0, 212, 255, 0.5);

    --text-primary: #F5F7FA;
    --text-secondary: #9BA3B4;
    --text-tertiary: #6B7385;

    --neon-cyan: #00D4FF;
    --neon-cyan-soft: rgba(0, 212, 255, 0.15);
    --neon-magenta: #FF2E92;
    --neon-magenta-soft: rgba(255, 46, 146, 0.15);
    --neon-amber: #FFB800;
    --neon-amber-soft: rgba(255, 184, 0, 0.15);
    --neon-green: #00FFA3;

    /* Typography */
    --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;

    /* Layout */
    --container-max: 1280px;
    --container-pad: 2rem;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    /* Effects */
    --glow-cyan: 0 0 40px rgba(0, 212, 255, 0.4);
    --glow-magenta: 0 0 40px rgba(255, 46, 146, 0.4);
    --glow-amber: 0 0 40px rgba(255, 184, 0, 0.4);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-elevated: 0 20px 60px rgba(0, 0, 0, 0.6);

    /* Transitions */
    --t-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --t-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --t-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --t-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

html { scroll-behavior: smooth; font-size: 16px; }

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

/* Background grid pattern */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: 0;
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

/* ---------- Scroll Progress Bar ---------- */
.scroll-progress {
    position: fixed;
    top: 0; left: 0;
    height: 3px;
    width: 0;
    background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta), var(--neon-amber));
    z-index: 1001;
    box-shadow: 0 0 10px var(--neon-cyan);
    transition: width 100ms linear;
}

/* ---------- Container ---------- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
    position: relative;
    z-index: 1;
}

/* ---------- Section ---------- */
.section {
    padding: var(--space-2xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto var(--space-xl);
}

.section-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--neon-cyan);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    padding: 0.4rem 1rem;
    background: var(--neon-cyan-soft);
    border: 1px solid var(--border-neon);
    border-radius: 100px;
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: clamp(2rem, 4.5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.section-title strong {
    color: var(--neon-magenta);
    font-weight: 800;
}

.section-desc {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.gradient-text {
    background: linear-gradient(135deg, var(--neon-cyan) 0%, var(--neon-magenta) 50%, var(--neon-amber) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.img-fluid { width: 100%; height: auto; border-radius: var(--radius-md); }

/* ---------- Navbar ---------- */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(10, 14, 26, 0.7);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-subtle);
    transition: all var(--t-base);
}

.navbar.scrolled {
    background: rgba(10, 14, 26, 0.92);
    border-bottom-color: var(--border-neon);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--neon-cyan);
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.05em;
    transition: all var(--t-base);
}

.nav-logo:hover { color: var(--neon-magenta); }

.logo-icon {
    width: 32px; height: 32px;
    filter: drop-shadow(0 0 8px var(--neon-cyan-soft));
}

.logo-text em {
    font-style: normal;
    color: var(--text-secondary);
    font-weight: 500;
    margin-left: 0.2rem;
}

.nav-menu {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.nav-link {
    position: relative;
    padding: 0.5rem 1rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--t-base);
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: -2px; left: 50%;
    transform: translateX(-50%);
    width: 0; height: 2px;
    background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta));
    transition: width var(--t-base);
}

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

.nav-link:hover::before,
.nav-link.active-link::before {
    width: 60%;
}

.nav-link.active-link {
    color: var(--neon-cyan);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    z-index: 1002;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--t-base);
    border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 100px 0 60px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.08) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse at center, black 20%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 80%);
}

.hero-glow {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 800px; height: 800px;
    background: radial-gradient(circle, var(--neon-cyan-soft) 0%, transparent 60%);
    filter: blur(60px);
    opacity: 0.6;
    animation: pulseGlow 8s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% { opacity: 0.4; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.7; transform: translate(-50%, -50%) scale(1.1); }
}

.hero-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content { animation: fadeInUp 0.8s ease-out; }

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.9rem;
    background: var(--bg-card);
    border: 1px solid var(--border-neon);
    border-radius: 100px;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    backdrop-filter: blur(10px);
}

.badge-dot {
    width: 6px; height: 6px;
    background: var(--neon-cyan);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--neon-cyan);
    animation: pulseDot 2s ease-in-out infinite;
}

@keyframes pulseDot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.05;
    margin-bottom: var(--space-md);
    letter-spacing: -0.03em;
}

.title-line {
    display: block;
}

.hero-subtitle {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: var(--space-lg);
    max-width: 540px;
}

.hero-subtitle strong {
    color: var(--neon-cyan);
    font-weight: 600;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    padding: var(--space-md) var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    flex-wrap: wrap;
}

.stat { flex: 1; min-width: 100px; text-align: center; }

.stat-value {
    font-size: clamp(1.4rem, 2.5vw, 1.875rem);
    font-weight: 800;
    font-family: var(--font-mono);
    line-height: 1;
    margin-bottom: 0.3rem;
    letter-spacing: -0.02em;
}

.stat-sub {
    font-size: 0.7em;
    color: var(--neon-cyan);
    font-weight: 600;
    margin-left: 0.15em;
}

.stat-unit {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--neon-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.3rem;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-divider {
    width: 1px; height: 40px;
    background: linear-gradient(180deg, transparent, var(--border-neon), transparent);
}

.hero-cta {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--t-base);
    cursor: pointer;
    white-space: nowrap;
}

.btn svg { width: 18px; height: 18px; }

.btn-primary {
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
    color: var(--bg-base);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.5), 0 0 40px rgba(255, 46, 146, 0.3);
}

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

.btn-ghost:hover {
    background: var(--neon-cyan-soft);
    border-color: var(--neon-cyan);
    transform: translateY(-2px);
}

/* Hero image */
.hero-image {
    position: relative;
    animation: fadeInUp 1s ease-out 0.2s backwards;
}

.hero-image-glow {
    position: absolute;
    inset: -20%;
    background: radial-gradient(circle, var(--neon-cyan-soft) 0%, transparent 60%);
    filter: blur(40px);
    z-index: 0;
}

.hero-product-img {
    position: relative;
    z-index: 1;
    width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0, 212, 255, 0.2));
    border-radius: var(--radius-lg);
    transition: transform var(--t-slow);
}

.hero-product-img:hover {
    transform: scale(1.02) rotate(-1deg);
}

.hero-scroll-hint {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-tertiary);
    font-size: 0.75rem;
    font-family: var(--font-mono);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    animation: fadeInUp 1.2s ease-out 0.6s backwards;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, var(--neon-cyan), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ---------- Overview ---------- */
.overview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.overview-text h3 {
    font-size: 1.875rem;
    font-weight: 800;
    margin-bottom: var(--space-md);
    letter-spacing: -0.01em;
}

.overview-text > p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-md);
    font-size: 1.0625rem;
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    transition: all var(--t-base);
}

.feature-list li:hover {
    border-color: var(--border-neon);
    transform: translateX(4px);
}

.list-icon {
    flex-shrink: 0;
    width: 28px; height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--c, var(--neon-cyan-soft));
    color: var(--c, var(--neon-cyan));
    border-radius: 50%;
    font-weight: 800;
    font-size: 0.9rem;
}

.feature-list li > div {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.feature-list li strong {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--text-primary);
}

.feature-list li span:not(.list-icon) {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.overview-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    padding: var(--space-md);
    transition: all var(--t-base);
}

.overview-image:hover {
    border-color: var(--border-neon);
    transform: translateY(-4px);
    box-shadow: var(--shadow-elevated);
}

.overview-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 0%, var(--neon-cyan-soft) 100%);
    opacity: 0;
    transition: opacity var(--t-base);
    pointer-events: none;
    mix-blend-mode: screen;
}

.overview-image:hover::after { opacity: 0.3; }

/* ---------- Features ---------- */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
}

.feature-card {
    position: relative;
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    transition: all var(--t-base);
    overflow: hidden;
    cursor: default;
}

.feature-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), var(--c-glow, var(--neon-cyan-soft)) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--t-base);
    pointer-events: none;
}

.feature-card:hover {
    transform: translateY(-6px);
    border-color: var(--c-glow-strong, var(--border-neon-strong));
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.feature-card:hover::before { opacity: 1; }

.feature-card[data-color="cyan"] { --c: var(--neon-cyan); --c-glow: var(--neon-cyan-soft); --c-glow-strong: var(--neon-cyan); }
.feature-card[data-color="magenta"] { --c: var(--neon-magenta); --c-glow: var(--neon-magenta-soft); --c-glow-strong: var(--neon-magenta); }
.feature-card[data-color="amber"] { --c: var(--neon-amber); --c-glow: var(--neon-amber-soft); --c-glow-strong: var(--neon-amber); }

.feature-num {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--c, var(--neon-cyan));
    letter-spacing: 0.1em;
    opacity: 0.6;
}

.feature-icon {
    width: 48px; height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--c-glow, var(--neon-cyan-soft));
    color: var(--c, var(--neon-cyan));
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    transition: all var(--t-base);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(-5deg);
    box-shadow: 0 0 30px var(--c-glow, var(--neon-cyan-soft));
}

.feature-icon svg { width: 24px; height: 24px; }

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    letter-spacing: -0.01em;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: var(--space-sm);
}

.feature-meta {
    display: inline-block;
    padding: 0.3rem 0.7rem;
    background: var(--c-glow, var(--neon-cyan-soft));
    color: var(--c, var(--neon-cyan));
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 600;
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
}

/* ---------- Specs ---------- */
.specs-search {
    position: relative;
    max-width: 480px;
    margin: 0 auto var(--space-lg);
}

.specs-search svg {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 18px; height: 18px;
    color: var(--text-tertiary);
    pointer-events: none;
}

.specs-search input {
    width: 100%;
    padding: 0.85rem 3rem 0.85rem 3rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-family: var(--font-sans);
    transition: all var(--t-base);
    backdrop-filter: blur(10px);
}

.specs-search input:focus {
    outline: none;
    border-color: var(--neon-cyan);
    box-shadow: 0 0 0 4px var(--neon-cyan-soft);
    background: rgba(255, 255, 255, 0.05);
}

.specs-search input::placeholder { color: var(--text-tertiary); }

.search-clear {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    width: 28px; height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: var(--text-tertiary);
    font-size: 1.4rem;
    border-radius: 50%;
    transition: all var(--t-base);
    opacity: 0;
    pointer-events: none;
}

.search-clear.visible { opacity: 1; pointer-events: auto; }
.search-clear:hover { background: var(--neon-magenta-soft); color: var(--neon-magenta); }

.specs-group {
    margin-bottom: var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    backdrop-filter: blur(10px);
    transition: border-color var(--t-base);
}

.specs-group.open { border-color: var(--border-neon); }

.specs-group-header {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: transparent;
    transition: background var(--t-base);
    text-align: left;
}

.specs-group-header:hover { background: var(--bg-card-hover); }

.group-title {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--text-primary);
}

.group-icon { font-size: 1.3rem; }

.group-toggle {
    width: 32px; height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--neon-cyan-soft);
    color: var(--neon-cyan);
    border-radius: 50%;
    font-size: 1.3rem;
    font-weight: 300;
    transition: transform var(--t-base);
    line-height: 1;
}

.specs-group.open .group-toggle { transform: rotate(45deg); }

.specs-table {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--t-slow);
}

.specs-group.open .specs-table { max-height: 3000px; }

.spec-row {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-lg);
    border-top: 1px solid var(--border-subtle);
    transition: background var(--t-base);
}

.spec-row:hover { background: var(--bg-card-hover); }

.spec-row.match {
    background: rgba(0, 212, 255, 0.08);
    border-left: 3px solid var(--neon-cyan);
}

.spec-row mark {
    background: var(--neon-cyan-soft);
    color: var(--neon-cyan);
    padding: 0 0.2em;
    border-radius: 3px;
}

.spec-name {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.spec-value {
    color: var(--text-primary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.spec-value.highlight {
    color: var(--neon-cyan);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
}

.specs-note {
    margin-top: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-card);
    border-left: 3px solid var(--neon-amber);
    border-radius: var(--radius-sm);
    color: var(--text-tertiary);
    font-size: 0.8125rem;
    line-height: 1.7;
    font-family: var(--font-mono);
}

.no-results {
    text-align: center;
    padding: var(--space-xl) var(--space-md);
    color: var(--text-tertiary);
    font-size: 0.9375rem;
    display: none;
}

.no-results.show { display: block; }

/* ---------- Licenses ---------- */
.licenses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
}

.license-card {
    position: relative;
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    transition: all var(--t-base);
    overflow: hidden;
}

.license-card[data-color="cyan"] { --c: var(--neon-cyan); --c-glow: var(--neon-cyan-soft); }
.license-card[data-color="magenta"] { --c: var(--neon-magenta); --c-glow: var(--neon-magenta-soft); }
.license-card[data-color="amber"] { --c: var(--neon-amber); --c-glow: var(--neon-amber-soft); }

.license-card:hover {
    transform: translateY(-4px);
    border-color: var(--c, var(--neon-cyan));
    box-shadow: 0 10px 40px var(--c-glow, var(--neon-cyan-soft));
}

.license-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 3px;
    background: linear-gradient(90deg, var(--c, var(--neon-cyan)), transparent);
    opacity: 0;
    transition: opacity var(--t-base);
}

.license-card:hover::after { opacity: 1; }

.license-tag {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    padding: 0.3rem 0.7rem;
    background: var(--c-glow, var(--neon-cyan-soft));
    color: var(--c, var(--neon-cyan));
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.license-card h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--c, var(--neon-cyan));
    font-family: var(--font-mono);
    margin-bottom: 0.2rem;
    letter-spacing: -0.01em;
}

.license-sub {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9375rem;
    margin-bottom: var(--space-sm);
}

.license-card > p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.7;
    margin-bottom: var(--space-sm);
}

.license-suitable {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    padding-top: var(--space-sm);
    border-top: 1px dashed var(--border-subtle);
}

.license-suitable li {
    padding: 0.25rem 0.6rem;
    background: var(--bg-card-hover);
    color: var(--text-secondary);
    border-radius: 100px;
    font-size: 0.75rem;
}

/* ---------- Scenes ---------- */
.scenes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-md);
}

.scene-card {
    padding: var(--space-lg) var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--t-base);
    cursor: default;
}

.scene-card[data-color="cyan"] { --c: var(--neon-cyan); --c-glow: var(--neon-cyan-soft); }
.scene-card[data-color="magenta"] { --c: var(--neon-magenta); --c-glow: var(--neon-magenta-soft); }
.scene-card[data-color="amber"] { --c: var(--neon-amber); --c-glow: var(--neon-amber-soft); }

.scene-card:hover {
    transform: translateY(-6px) scale(1.02);
    border-color: var(--c, var(--neon-cyan));
    box-shadow: 0 10px 30px var(--c-glow, var(--neon-cyan-soft));
}

.scene-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
    filter: drop-shadow(0 0 10px var(--c-glow, var(--neon-cyan-soft)));
    transition: transform var(--t-base);
}

.scene-card:hover .scene-icon { transform: scale(1.2) rotate(-8deg); }

.scene-card h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
    color: var(--text-primary);
}

.scene-card p {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ---------- Resources ---------- */
.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-md);
}

.resource-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: all var(--t-base);
    backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.resource-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--neon-cyan-soft), transparent);
    opacity: 0;
    transition: opacity var(--t-base);
}

.resource-card:hover {
    transform: translateY(-3px);
    border-color: var(--neon-cyan);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.2);
}

.resource-card:hover::before { opacity: 1; }

.resource-icon {
    position: relative;
    font-size: 2.5rem;
    flex-shrink: 0;
    filter: drop-shadow(0 0 10px var(--neon-cyan-soft));
}

.resource-info {
    position: relative;
    flex: 1;
    min-width: 0;
}

.resource-info h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    margin-bottom: 0.2rem;
    color: var(--text-primary);
}

.resource-info p {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: 0.3rem;
}

.resource-size {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--neon-cyan);
    letter-spacing: 0.05em;
}

.resource-arrow {
    position: relative;
    width: 24px; height: 24px;
    color: var(--text-tertiary);
    flex-shrink: 0;
    transition: all var(--t-base);
}

.resource-card:hover .resource-arrow {
    color: var(--neon-cyan);
    transform: translate(4px, -4px);
}

/* ---------- Footer ---------- */
.footer {
    margin-top: var(--space-2xl);
    padding: var(--space-xl) 0 var(--space-md);
    background: linear-gradient(180deg, var(--bg-base) 0%, var(--bg-elevated) 100%);
    border-top: 1px solid var(--border-subtle);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0; left: 50%;
    transform: translateX(-50%);
    width: 200px; height: 1px;
    background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--neon-cyan);
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: var(--space-sm);
}

.footer-logo svg { width: 32px; height: 32px; }

.footer-logo em {
    font-style: normal;
    color: var(--text-secondary);
    font-weight: 500;
}

.footer-col > p {
    color: var(--text-tertiary);
    font-size: 0.8125rem;
    line-height: 1.7;
}

.footer-col h4 {
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-col a {
    display: block;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    transition: color var(--t-base);
}

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

.footer-col p:not(:first-child) {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}

.footer-model { color: var(--neon-amber) !important; font-family: var(--font-mono); }

.footer-bottom {
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.footer-bottom p {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.footer-tip { font-style: italic; }

/* ---------- Back to Top ---------- */
.back-to-top {
    position: fixed;
    bottom: 30px; right: 30px;
    width: 48px; height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
    color: var(--bg-base);
    border-radius: 50%;
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--t-base);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.6), 0 0 40px rgba(255, 46, 146, 0.4);
}

.back-to-top svg { width: 20px; height: 20px; }

/* ---------- Lightbox ---------- */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    backdrop-filter: blur(10px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--t-base);
}

.lightbox.open { opacity: 1; visibility: visible; }

.lightbox img {
    max-width: 95%;
    max-height: 90vh;
    border-radius: var(--radius-md);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
    transform: scale(0.9);
    transition: transform var(--t-spring);
}

.lightbox.open img { transform: scale(1); }

.lightbox-close {
    position: absolute;
    top: 20px; right: 20px;
    width: 48px; height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-neon);
    color: var(--text-primary);
    border-radius: 50%;
    font-size: 1.8rem;
    line-height: 1;
    transition: all var(--t-base);
}

.lightbox-close:hover {
    background: var(--neon-magenta-soft);
    border-color: var(--neon-magenta);
    color: var(--neon-magenta);
    transform: rotate(90deg);
}

/* ---------- Scroll Reveal Animation ---------- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    :root { --container-pad: 1.5rem; }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle { margin-left: auto; margin-right: auto; }

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

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

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

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

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

@media (max-width: 768px) {
    :root { --container-pad: 1.25rem; }

    .nav-menu {
        position: fixed;
        top: 0; right: 0;
        width: 280px; height: 100vh;
        background: rgba(10, 14, 26, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: flex-start;
        padding: 90px var(--space-lg) var(--space-lg);
        gap: 0.5rem;
        transform: translateX(100%);
        transition: transform var(--t-base);
        border-left: 1px solid var(--border-neon);
    }

    .nav-menu.open { transform: translateX(0); }

    .nav-link { width: 100%; padding: 0.75rem 1rem; }

    .nav-toggle { display: flex; }

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

    .hero { padding: 90px 0 40px; min-height: auto; }

    .hero-stats { gap: var(--space-sm); padding: var(--space-sm); }

    .stat-divider { display: none; }

    .stat { min-width: 45%; }

    .stat-value { font-size: 1.3rem; }

    .spec-row { grid-template-columns: 1fr; gap: 0.3rem; }

    .spec-name { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; }

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

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

@media (max-width: 480px) {
    .hero-stats { flex-direction: column; }
    .stat { width: 100%; }
    .stat-divider { width: 60%; height: 1px; background: linear-gradient(90deg, transparent, var(--border-neon), transparent); }

    .features-grid, .licenses-grid, .scenes-grid, .resources-grid {
        grid-template-columns: 1fr;
    }

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

/* ---------- Print ---------- */
@media print {
    .navbar, .back-to-top, .hero-cta, .scroll-progress, .hero-scroll-hint { display: none; }
    body { background: white; color: black; }
    .section { padding: 1rem 0; }
}

/* ---------- Reduce motion ---------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}