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

:root {
    color-scheme: dark;
    --bg: #08080c;
    --surface: #0f0f15;
    --border: #1a1a2e;
    --text: #e2e8f0;
    --text-muted: #8892b0;
    --accent: #4a9eff;
    --accent-hover: #6db3ff;
    --danger: #ef4444;
    --danger-dark: #dc2626;
    --success: #22c55e;
    --success-hover: #16a34a;
    --warning: #f59e0b;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 8px 40px rgba(0, 0, 0, 0.4);
    --nav-bg: rgba(8, 8, 12, 0.92);
    --table-head-bg: rgba(15, 15, 21, 0.6);
    --input-bg: #0a0a10;
    --accent-soft: rgba(74, 158, 255, 0.1);
    --accent-soft-strong: rgba(74, 158, 255, 0.3);
    --accent-border: rgba(74, 158, 255, 0.2);
    --muted-soft: rgba(136, 146, 176, 0.08);
    --muted-border: rgba(136, 146, 176, 0.12);
    --success-soft: rgba(34, 197, 94, 0.15);
    --success-text: #4ade80;
    --danger-soft: rgba(239, 68, 68, 0.15);
    --danger-text: #f87171;
    --warning-soft: rgba(245, 158, 11, 0.15);
    --warning-text: #fcd34d;
    --footer-muted: rgba(136, 146, 176, 0.5);
    --hero-text: #e2e8f0;
    --hero-muted: #8892b0;
    --hero-toggle-bg: rgba(8, 8, 12, 0.45);
    --hero-toggle-border: rgba(226, 232, 240, 0.18);
    --viewer-canvas-bg: #08080c;
    --page-max-width: 1200px;
    --page-padding: 40px;
    --section-space: 96px;
    --radius-card: 12px;
    --radius-control: 10px;
    --radius-pill: 999px;
    --grid-gap: 24px;
    --grid-gap-compact: 20px;
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-right: env(safe-area-inset-right, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
}

html[data-theme="light"] {
    color-scheme: light;
    --bg: #f7f9fc;
    --surface: #ffffff;
    --border: #d9e2ef;
    --text: #121826;
    --text-muted: #5f6f86;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --danger: #dc2626;
    --danger-dark: #b91c1c;
    --success: #16a34a;
    --success-hover: #15803d;
    --warning: #d97706;
    --shadow: 0 4px 18px rgba(15, 23, 42, 0.08);
    --shadow-hover: 0 8px 32px rgba(15, 23, 42, 0.12);
    --nav-bg: rgba(255, 255, 255, 0.9);
    --table-head-bg: rgba(241, 245, 249, 0.85);
    --input-bg: #ffffff;
    --accent-soft: rgba(37, 99, 235, 0.08);
    --accent-soft-strong: rgba(37, 99, 235, 0.2);
    --accent-border: rgba(37, 99, 235, 0.22);
    --muted-soft: rgba(95, 111, 134, 0.08);
    --muted-border: rgba(95, 111, 134, 0.14);
    --success-soft: rgba(22, 163, 74, 0.12);
    --success-text: #15803d;
    --danger-soft: rgba(220, 38, 38, 0.1);
    --danger-text: #b91c1c;
    --warning-soft: rgba(217, 119, 6, 0.12);
    --warning-text: #b45309;
    --footer-muted: rgba(95, 111, 134, 0.7);
    --hero-text: #121826;
    --hero-muted: #5f6f86;
    --hero-toggle-bg: rgba(255, 255, 255, 0.72);
    --hero-toggle-border: rgba(15, 23, 42, 0.14);
    --viewer-canvas-bg: #f7f9fc;
}

::selection {
    background: var(--accent-soft-strong);
    color: var(--text);
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ── Navigation ─────────────────────────────── */

body > nav {
    top: 0;
    z-index: 100;
    padding: calc(20px + var(--safe-top)) calc(40px + var(--safe-right)) 20px calc(40px + var(--safe-left));
    min-height: 72px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 24px;
}

body > nav.portfolio-nav {
    position: fixed;
    left: 0;
    right: 0;
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: background 0.3s ease, border-color 0.3s ease;
}

body > nav.portfolio-nav.scrolled {
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom-color: var(--border);
}

body > nav.portfolio-nav:not(.scrolled) .nav-logo,
body > nav.portfolio-nav:not(.scrolled) .nav-links a {
    color: var(--hero-text);
}

body > nav.portfolio-nav:not(.scrolled) .theme-toggle {
    background: var(--hero-toggle-bg);
    border-color: var(--hero-toggle-border);
    color: var(--hero-text);
}

.site-nav,
.admin-nav {
    position: sticky;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.site-nav {
    margin-bottom: 32px;
}

.nav-logo {
    flex-shrink: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 20px;
    min-width: 0;
    margin-left: auto;
    list-style: none;
    -webkit-overflow-scrolling: touch;
}

.nav-links li {
    display: flex;
}

.nav-links a,
.admin-nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    transition: color 0.2s, opacity 0.2s;
}

.nav-links a:hover,
.admin-nav-links a:hover {
    color: var(--text);
}

.nav-links .active,
.admin-nav-links .active {
    color: var(--accent);
}

.nav-sep,
.admin-nav-links .sep,
.breadcrumb .breadcrumb-sep {
    color: var(--border);
    user-select: none;
}

.theme-toggle {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 34px;
    padding: 7px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-control);
    background: var(--surface);
    color: var(--text-muted);
    font: inherit;
    font-size: 13px;
    font-weight: 600;
    line-height: 1;
    white-space: nowrap;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
    color: var(--text);
    border-color: var(--accent);
}

.theme-toggle:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px var(--accent-soft-strong);
}

.theme-toggle [data-theme-icon] {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
}

/* ── Hero ────────────────────────────────────── */

#hero {
    position: relative;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
}

#hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--viewer-canvas-bg);
    will-change: transform;
}

#hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to bottom, transparent, var(--bg));
    z-index: 5;
    pointer-events: none;
}

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 10;
    pointer-events: none;
    animation: heroFadeIn 1.2s ease 0.4s forwards;
    opacity: 0;
}

.hero-content h1 {
    font-size: clamp(52px, 9vw, 100px);
    font-weight: 700;
    letter-spacing: -0.04em;
    color: var(--hero-text);
    margin-bottom: 12px;
    line-height: 1;
}

.hero-subtitle {
    font-size: clamp(14px, 2vw, 18px);
    color: var(--hero-muted);
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.hero-tagline {
    font-family: 'JetBrains Mono', monospace;
    font-size: clamp(11px, 1.4vw, 14px);
    color: var(--accent);
    opacity: 0.7;
}

@keyframes heroFadeIn {
    from { opacity: 0; transform: translate(-50%, -46%); }
    to   { opacity: 1; transform: translate(-50%, -50%); }
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    animation: pulse 2.5s ease-in-out infinite;
}

.scroll-indicator span {
    font-size: 10px;
    color: var(--hero-muted);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.scroll-indicator .line {
    width: 1px;
    height: 36px;
    background: linear-gradient(to bottom, var(--hero-muted), transparent);
}

@keyframes pulse {
    0%, 100% { opacity: 0.25; }
    50% { opacity: 0.6; }
}

/* ── Sections ────────────────────────────────── */

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

.container,
.app-container {
    max-width: var(--page-max-width);
    margin: 0 auto;
    padding-left: var(--page-padding);
    padding-right: var(--page-padding);
}

.section-label,
.landing-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    font-weight: 500;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text);
    margin-bottom: 48px;
}

/* ── Project Cards ───────────────────────────── */

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--grid-gap);
}

.project-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    padding: 40px;
    transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.project-card:hover {
    border-color: var(--accent-border);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

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

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
    gap: 16px;
}

.project-name {
    font-size: 24px;
    font-weight: 600;
    color: var(--text);
    letter-spacing: -0.01em;
}

.project-badge {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 500;
    padding: 5px 14px;
    border-radius: var(--radius-pill);
    background: var(--accent-soft);
    color: var(--accent);
    border: 1px solid var(--accent-border);
    white-space: nowrap;
    flex-shrink: 0;
}

.project-description {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 24px;
    max-width: 640px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.tag,
.tech-tag {
    font-family: 'JetBrains Mono', monospace;
    background: var(--muted-soft);
    color: var(--text-muted);
    border: 1px solid var(--muted-border);
}

.tag {
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 6px;
}

.project-stats {
    display: flex;
    gap: 32px;
    margin-bottom: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
}

.project-stat-label {
    font-size: 12px;
    color: var(--text-muted);
}

.project-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ── Buttons ─────────────────────────────────── */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-control);
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.2;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
    appearance: none;
    transition: background 0.2s, color 0.2s, border 0.2s, box-shadow 0.2s;
}

.btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px var(--accent-soft-strong);
    border-color: var(--accent);
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #fff;
    box-shadow: 0 4px 16px var(--accent-soft-strong);
}

.btn-ghost {
    background: transparent;
    color: var(--text-muted);
    border-color: var(--border);
}

.btn-ghost:hover {
    color: var(--text);
    border-color: var(--text-muted);
}

.btn-outline,
.btn-commercial {
    background: transparent;
    color: var(--accent);
    border-color: var(--accent);
}

.btn-outline:hover,
.btn-commercial:hover {
    background: var(--accent-soft);
}

/* ── Tables ──────────────────────────────────── */

.table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table,
.comparison-table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.comparison-table thead th {
    background: var(--table-head-bg);
    font-size: 12px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-muted);
    font-weight: 600;
}

.table td,
.comparison-table td {
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

.table tr:last-child td,
.comparison-table tr:last-child td {
    border-bottom: none;
}

/* ── About ───────────────────────────────────── */

.about-text {
    max-width: 640px;
}

.about-text p {
    color: var(--text-muted);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 16px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--grid-gap);
    margin-top: 48px;
}

.skill-group,
.feature-card,
.audience-card,
.licensing-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    padding: 24px;
}

.skill-group h3 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.skill-group p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ── Contact ─────────────────────────────────── */

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--grid-gap-compact);
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
    padding: 18px 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    text-decoration: none;
    transition: border-color 0.2s, transform 0.2s;
}

.contact-link:hover {
    border-color: var(--accent-border);
    transform: translateY(-1px);
}

.contact-icon,
.feature-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-control);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    font-family: 'JetBrains Mono', monospace;
}

.contact-meta {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.contact-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 500;
}

.contact-value {
    font-size: 14px;
    color: var(--accent);
    font-weight: 500;
    overflow-wrap: anywhere;
}

/* ── Footer ──────────────────────────────────── */

footer {
    padding: 40px 0 calc(40px + var(--safe-bottom));
    border-top: 1px solid var(--border);
}

footer p {
    text-align: center;
    font-size: 13px;
    color: var(--footer-muted);
}

/* ── Responsive ──────────────────────────────── */

@media (max-width: 768px) {
    :root {
        --page-padding: 20px;
        --section-space: 72px;
    }
    body > nav {
        padding: calc(16px + var(--safe-top)) calc(20px + var(--safe-right)) 16px calc(20px + var(--safe-left));
        min-height: 0;
        flex-wrap: wrap;
        gap: 12px 16px;
    }
    .nav-logo { margin-right: auto; }
    .nav-links {
        order: 3;
        width: 100%;
        margin-left: 0;
        justify-content: flex-start;
        gap: 12px 16px;
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 2px;
    }
    .nav-sep { display: none; }
    .nav-links a { font-size: 13px; }
    .theme-toggle,
    .btn {
        min-height: 44px;
    }
    input,
    select,
    textarea {
        font-size: 16px;
    }
    .table,
    .comparison-table {
        min-width: 640px;
    }
    .contact-link {
        padding: 16px 18px;
    }
    .project-card { padding: 24px; }
    .project-stats { flex-wrap: wrap; gap: 20px; }
    .skills-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
    :root {
        --page-padding: 16px;
        --section-space: 48px;
    }
    .nav-links { gap: 16px; }
    .hero-content {
        width: min(100% - 32px, 560px);
    }
    .hero-content h1 {
        font-size: clamp(44px, 18vw, 68px);
    }
    .project-actions .btn,
    .hero-ctas .btn,
    .license-callout .btn {
        width: 100%;
    }
    .project-header { flex-direction: column; }
    .skills-grid { grid-template-columns: 1fr; }
}

/* ── Landing page (/ost3d/) ─────────────────── */

.landing-hero {
    text-align: center;
    padding: var(--section-space) 0;
}
.landing-hero h1 {
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
}
.landing-hero .pitch {
    font-size: clamp(16px, 2vw, 20px);
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 12px;
    line-height: 1.6;
}
.landing-hero .license-note {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    color: var(--accent);
    opacity: 0.7;
    margin-bottom: 32px;
}
.landing-version {
    margin-top: 16px;
    font-size: 13px;
    color: var(--text-muted);
}
.hero-ctas {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.hero-ctas .btn { padding: 14px 32px; font-size: 15px; }
.features-section { padding: var(--section-space) 0; }
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--grid-gap-compact);
    margin-top: 32px;
}
.feature-card { transition: border-color 0.2s, transform 0.2s; }
.feature-card:hover {
    border-color: var(--accent-border);
    transform: translateY(-2px);
}
.feature-icon {
    font-size: 18px;
    margin-bottom: 14px;
    background: var(--accent-soft);
    color: var(--accent);
}
.feature-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}
.feature-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}
.feature-badge {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 3px 8px;
    border-radius: 4px;
    background: var(--warning-soft);
    color: var(--warning-text);
    margin-left: 8px;
    vertical-align: middle;
}

.comparison-section { padding: var(--section-space) 0; }
.comparison-table { margin-top: 32px; }
.comparison-table th,
.comparison-table td {
    padding: 14px 20px;
    text-align: left;
}
.comparison-table thead th:not(:first-child) { text-align: center; }
.comparison-table td:not(:first-child) { text-align: center; color: var(--text-muted); }
.comparison-table td .check { color: var(--success); font-weight: 700; font-size: 16px; }
.comparison-table td .dash { color: var(--text-muted); opacity: 0.4; }
.comparison-table .col-commercial { background: var(--accent-soft); }
.comparison-table .plan-label { font-weight: 600; color: var(--text); }
.comparison-table .plan-price {
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    font-weight: 600;
}

.audience-section { padding: var(--section-space) 0; }
.audience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--grid-gap-compact);
    margin-top: 32px;
}
.audience-card { text-align: center; }
.audience-card .role { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.audience-card .desc { font-size: 13px; color: var(--text-muted); line-height: 1.5; }

.licensing-section { padding: var(--section-space) 0; }
.licensing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--grid-gap-compact);
    margin-top: 32px;
}
.licensing-card h3 { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 16px; }
.licensing-card ul,
.list-monospace { list-style: none; padding: 0; margin: 0; }
.licensing-card li { font-size: 14px; color: var(--text-muted); line-height: 1.6; margin-bottom: 10px; }
.licensing-card li:last-child { margin-bottom: 0; }
.licensing-card li strong { color: var(--text); }

.tech-section { padding: var(--section-space) 0; }
.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
    margin-bottom: 16px;
}
.tech-tag {
    font-size: 13px;
    padding: 6px 14px;
    border-radius: 8px;
}
.tech-desc { font-size: 14px; color: var(--text-muted); }

.landing-label { margin-bottom: 12px; }
.landing-title {
    font-size: clamp(24px, 3.5vw, 36px);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}
.landing-subtitle {
    color: var(--text-muted);
    font-size: 15px;
    max-width: 560px;
}

.landing-contact {
    text-align: center;
    padding: 48px 0 16px;
    border-top: 1px solid var(--border);
    margin-top: 40px;
    color: var(--text-muted);
    font-size: 15px;
}

/* ── Download page (/ost3d/download) ────────── */

.license-callout {
    background: var(--accent-soft);
    border: 1px solid var(--accent-border);
    border-radius: var(--radius-card);
    padding: 20px 24px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}
.license-callout .callout-text h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
}
.license-callout .callout-text p {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
}

.license-note-sm {
    margin-top: 12px;
    font-size: 12px;
    color: var(--text-muted);
}

/* ── Contact icons (homepage) ───────────────── */

.contact-icon-email { background: var(--accent); }
.contact-icon-github { background: #24292e; }
.contact-icon-telegram { background: #24A1DE; }

/* ── Shared utilities ───────────────────────── */

.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.nowrap { white-space: nowrap; }

/* ── Landing / download responsive ──────────── */

@media (max-width: 768px) {
    .comparison-table th,
    .comparison-table td { padding: 10px 12px; font-size: 13px; }
}
@media (max-width: 480px) {
    .features-grid { grid-template-columns: 1fr; }
    .audience-grid { grid-template-columns: 1fr; }
    .licensing-grid { grid-template-columns: 1fr; }
    .license-callout { flex-direction: column; align-items: flex-start; }
}