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

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a25;
    --bg-card-hover: #22223a;
    --text-primary: #f0f0f5;
    --text-secondary: #9090a8;
    --text-muted: #606078;
    --accent: #7c5cfc;
    --accent-light: #9b80ff;
    --accent-dark: #5a3cd4;
    --accent-glow: rgba(124, 92, 252, 0.3);
    --green: #34d399;
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

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

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

a {
    color: inherit;
    text-decoration: none;
}

/* ── Navbar ── */
.navbar {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 10px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.2rem;
}

.nav-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: color var(--transition);
    font-weight: 500;
}

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

.nav-github {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-card);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.nav-github:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ── Active Development Banner ── */
.dev-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(251, 191, 36, 0.08);
    border-bottom: 1px solid rgba(251, 191, 36, 0.15);
    color: #fbbf24;
    font-size: 0.82rem;
    font-weight: 500;
    padding: 10px 20px;
    text-align: center;
}

/* ── Hero ── */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 24px 80px;
    overflow: hidden;
}

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

.hero-glow {
    position: absolute;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
    opacity: 0.5;
    filter: blur(80px);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    background: rgba(124, 92, 252, 0.1);
    border: 1px solid rgba(124, 92, 252, 0.3);
    color: var(--accent-light);
    padding: 6px 18px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 28px;
    letter-spacing: 0.02em;
}

.hero h1 {
    font-size: clamp(2.8rem, 7vw, 5rem);
    font-weight: 900;
    line-height: 1.08;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-light), #c084fc, #f472b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

#rotate-word {
    display: inline-block;
    transition: opacity 0.25s ease, transform 0.25s ease;
    background: linear-gradient(135deg, var(--accent-light), #c084fc, #f472b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

#rotate-word.hidden {
    opacity: 0;
    transform: translateY(10px);
}

.hero-desc {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 620px;
    margin: 0 auto 36px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 36px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 24px var(--accent-glow);
}

.btn-primary:hover {
    background: var(--accent-light);
    box-shadow: 0 6px 32px rgba(124, 92, 252, 0.45);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.hero-platforms {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.platform-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    padding: 6px 14px;
    border-radius: 100px;
    font-weight: 500;
}

/* ── Sections ── */
.section {
    padding: 100px 0;
}

.section-dark {
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 500px;
    margin: 0 auto;
}

/* ── Features Grid ── */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 28px;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.feature-card-beta {
    border-color: rgba(124, 92, 252, 0.2);
}

.feature-card-beta:hover {
    border-color: var(--accent);
}

.beta-tag {
    display: inline-block;
    background: rgba(124, 92, 252, 0.15);
    color: var(--accent-light);
    font-size: 0.68rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 100px;
    vertical-align: middle;
    margin-left: 6px;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.section-cta {
    text-align: center;
    margin-top: 40px;
}

.beta-warning {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-top: 20px;
    padding: 12px 20px;
    background: rgba(251, 191, 36, 0.06);
    border: 1px solid rgba(251, 191, 36, 0.2);
    border-radius: var(--radius-sm);
    color: #fbbf24;
    font-size: 0.85rem;
    font-weight: 500;
    line-height: 1.5;
}

.feature-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(124, 92, 252, 0.1);
    border-radius: 12px;
    color: var(--accent-light);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.6;
}

/* ── Emulators Grid ── */
.emulators-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}

.emulator-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.emulator-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.emulator-card:hover {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent), 0 8px 32px rgba(124, 92, 252, 0.1);
}

.emulator-card-wide {
    grid-column: 1 / -1;
}

.emulator-header h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.emulator-systems {
    font-size: 0.82rem;
    color: var(--text-muted);
}

.emulator-platforms {
    display: flex;
    gap: 8px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.emulator-platforms .check {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--green);
    background: rgba(52, 211, 153, 0.1);
    padding: 3px 10px;
    border-radius: 100px;
}

.emulator-platforms .check-unavail {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.03);
    padding: 3px 10px;
    border-radius: 100px;
    text-decoration: line-through;
    opacity: 0.5;
}

/* ── Steps ── */
.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    flex-wrap: wrap;
}

.step {
    text-align: center;
    max-width: 200px;
    opacity: 0;
    transform: translateY(20px);
    flex: 1;
    min-width: 160px;
}

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

.step-number {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: #fff;
    font-size: 1.2rem;
    font-weight: 800;
    margin: 0 auto 16px;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.step h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.step p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.6;
}

.step-connector {
    width: 60px;
    height: 2px;
    background: var(--border);
    margin-top: 28px;
    flex-shrink: 0;
}

/* ── Download Cards ── */
.download-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.download-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    text-align: center;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.download-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.download-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.download-icon {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.download-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.download-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.download-note {
    display: block;
    margin-top: 12px;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.download-all {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.download-all a {
    color: var(--accent-light);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.download-all a:hover {
    color: var(--accent);
}

.download-other-releases {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin: 32px auto 0;
    padding: 10px 22px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
    text-align: center;
    width: auto;
}

.download-other-releases:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

/* ── Footer ── */
.section-footer {
    padding: 60px 0 40px;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.footer-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    margin-bottom: 4px;
}

.footer-name {
    font-weight: 700;
    font-size: 1.1rem;
}

.footer-tagline {
    color: var(--text-muted);
    font-size: 0.88rem;
}

.footer-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.82rem;
}

/* ── Animations ── */
.feature-card,
.emulator-card,
.step,
.download-card {
    transition: opacity 0.5s ease, transform 0.5s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

/* Stagger delay via nth-child */
.features-grid .feature-card:nth-child(1) { transition-delay: 0s; }
.features-grid .feature-card:nth-child(2) { transition-delay: 0.05s; }
.features-grid .feature-card:nth-child(3) { transition-delay: 0.1s; }
.features-grid .feature-card:nth-child(4) { transition-delay: 0.15s; }
.features-grid .feature-card:nth-child(5) { transition-delay: 0.2s; }
.features-grid .feature-card:nth-child(6) { transition-delay: 0.25s; }
.features-grid .feature-card:nth-child(7) { transition-delay: 0.3s; }
.features-grid .feature-card:nth-child(8) { transition-delay: 0.35s; }

.emulators-grid .emulator-card:nth-child(1) { transition-delay: 0s; }
.emulators-grid .emulator-card:nth-child(2) { transition-delay: 0.03s; }
.emulators-grid .emulator-card:nth-child(3) { transition-delay: 0.06s; }
.emulators-grid .emulator-card:nth-child(4) { transition-delay: 0.09s; }
.emulators-grid .emulator-card:nth-child(5) { transition-delay: 0.12s; }
.emulators-grid .emulator-card:nth-child(6) { transition-delay: 0.15s; }
.emulators-grid .emulator-card:nth-child(7) { transition-delay: 0.18s; }
.emulators-grid .emulator-card:nth-child(8) { transition-delay: 0.21s; }
.emulators-grid .emulator-card:nth-child(9) { transition-delay: 0.24s; }
.emulators-grid .emulator-card:nth-child(10) { transition-delay: 0.27s; }
.emulators-grid .emulator-card:nth-child(11) { transition-delay: 0.3s; }
.emulators-grid .emulator-card:nth-child(12) { transition-delay: 0.33s; }
.emulators-grid .emulator-card:nth-child(13) { transition-delay: 0.36s; }
.emulators-grid .emulator-card:nth-child(14) { transition-delay: 0.39s; }
.emulators-grid .emulator-card:nth-child(15) { transition-delay: 0.42s; }
.emulators-grid .emulator-card:nth-child(16) { transition-delay: 0.45s; }
.emulators-grid .emulator-card:nth-child(17) { transition-delay: 0.48s; }
.emulators-grid .emulator-card:nth-child(18) { transition-delay: 0.51s; }
.emulators-grid .emulator-card:nth-child(19) { transition-delay: 0.54s; }
.emulators-grid .emulator-card:nth-child(20) { transition-delay: 0.57s; }

.steps .step:nth-child(1) { transition-delay: 0s; }
.steps .step:nth-child(3) { transition-delay: 0.1s; }
.steps .step:nth-child(5) { transition-delay: 0.2s; }
.steps .step:nth-child(7) { transition-delay: 0.3s; }

.download-cards .download-card:nth-child(1) { transition-delay: 0s; }
.download-cards .download-card:nth-child(2) { transition-delay: 0.1s; }
.download-cards .download-card:nth-child(3) { transition-delay: 0.2s; }

/* ── Responsive ── */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(10, 10, 15, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--border);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

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

    .hero h1 {
        font-size: 2.4rem;
    }

    .hero-desc {
        font-size: 1rem;
    }

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

    .step-connector {
        width: 2px;
        height: 30px;
        margin: 0;
    }

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

@media (max-width: 480px) {
    .hero {
        padding: 100px 16px 60px;
    }

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

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

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

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

    .download-cards {
        grid-template-columns: 1fr;
    }
}

/* ══════════════════════════════════════════════════
   Shared Page Styles (Help Guide, FAQ, About)
   ══════════════════════════════════════════════════ */

/* ── Page Header ── */
.page-header {
    padding: 140px 0 60px;
    text-align: center;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.page-header h1 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 900;
    letter-spacing: -0.03em;
    margin-bottom: 12px;
}

.page-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 500px;
    margin: 0 auto;
}

.page-header-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(124, 92, 252, 0.1);
    border: 1px solid rgba(124, 92, 252, 0.3);
    color: var(--accent-light);
    padding: 5px 14px;
    border-radius: 100px;
    font-size: 0.78rem;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

/* ── Active nav link ── */
.nav-links a.active {
    color: var(--text-primary);
}

/* ── Code Block ── */
.code-block {
    background: #0d0d14;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    margin-top: 12px;
    overflow-x: auto;
}

.code-block code {
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.85rem;
    color: var(--accent-light);
    line-height: 1.7;
    white-space: pre;
}

/* ── Guide Page ── */
.guide-toc {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
}

.guide-toc h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.toc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 8px;
}

.toc-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.toc-link:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.toc-num {
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(124, 92, 252, 0.12);
    color: var(--accent-light);
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

/* ── Guide Sections ── */
.guide-section {
    max-width: 800px;
    margin: 0 auto;
}

.guide-section-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.beta-feature-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(124, 92, 252, 0.1);
    border-radius: 12px;
    color: var(--accent-light);
    flex-shrink: 0;
}

.beta-feature-icon + div,
.beta-feature-icon ~ div {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.guide-section-num {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: #fff;
    font-size: 1.1rem;
    font-weight: 800;
    flex-shrink: 0;
}

.guide-section h2 {
    font-size: 1.8rem;
    font-weight: 800;
}

.guide-section h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-top: 36px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.guide-section p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 16px;
}

.guide-section a {
    color: var(--accent-light);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.guide-section a:hover {
    color: var(--accent);
}

.guide-step {
    padding: 12px 0 12px 20px;
    border-left: 2px solid var(--border);
    margin-bottom: 4px;
}

.guide-step p {
    margin-bottom: 0;
}

.guide-step code {
    background: rgba(124, 92, 252, 0.1);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.88rem;
    color: var(--accent-light);
}

.guide-tip {
    background: rgba(52, 211, 153, 0.06);
    border: 1px solid rgba(52, 211, 153, 0.15);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    margin: 20px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.guide-tip strong {
    color: var(--green);
}

.guide-tip a {
    color: var(--accent-light);
    text-decoration: underline;
}

.guide-list {
    list-style: none;
    padding: 0;
    margin: 12px 0;
}

.guide-list li {
    padding: 8px 0 8px 24px;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.guide-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 16px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}

.guide-two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 16px;
}

.guide-info-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
}

.guide-info-card h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.guide-info-card p {
    font-size: 0.88rem;
    margin-bottom: 0;
}

.guide-emulator-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 10px;
    margin-top: 16px;
}

.guide-emu-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.guide-emu-item strong {
    color: var(--text-primary);
}

/* ── Themes Grid ── */
.themes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.theme-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

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

.theme-preview {
    width: 100%;
    height: 48px;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.theme-preview-system {
    background: linear-gradient(90deg, #f5f5f7 50%, #0a0a0f 50%);
}

.theme-name {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* ── Controller Grid ── */
.guide-control-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.guide-control {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
}

.guide-control-key {
    background: rgba(124, 92, 252, 0.12);
    color: var(--accent-light);
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 0.82rem;
    font-weight: 700;
    white-space: nowrap;
}

.guide-control span:last-child {
    color: var(--text-secondary);
    font-size: 0.88rem;
}

/* ── FAQ Page ── */
.faq-category-title {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 20px;
    margin-top: 48px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.faq-category-title:first-child {
    margin-top: 0;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: border-color var(--transition);
}

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

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 18px 24px;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    text-align: left;
    transition: color var(--transition);
}

.faq-question:hover {
    color: var(--accent-light);
}

.faq-chevron {
    flex-shrink: 0;
    color: var(--text-muted);
    transition: transform 0.3s ease, color 0.3s ease;
}

.faq-item.open .faq-chevron {
    transform: rotate(180deg);
    color: var(--accent-light);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-item.open .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 24px 20px;
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.7;
}

.faq-answer p code {
    background: rgba(124, 92, 252, 0.1);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
    color: var(--accent-light);
}

.faq-answer a {
    color: var(--accent-light);
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* ── About Page ── */
.mission-section {
    min-height: 80vh;
}

.mission-reading {
    max-width: 720px;
    margin: 0 auto;
}

.mission-line {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
    margin-bottom: 28px;
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.mission-line.visible {
    opacity: 1;
    transform: translateY(0);
}

.mission-line:first-child {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 40px;
}

.mission-highlight {
    font-size: 1.5rem !important;
    font-weight: 700;
    color: var(--accent-light) !important;
    text-align: center;
    padding: 20px 0;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-top: 60px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 900;
    color: var(--accent-light);
    margin-bottom: 4px;
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}

.tech-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 24px;
    transition: var(--transition);
}

.tech-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.tech-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--accent-light);
}

.tech-card p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.6;
}

.about-contribute {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 48px;
}

.contribute-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 28px;
    text-align: center;
}

.contribute-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.contribute-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.about-build {
    max-width: 700px;
    margin: 0 auto;
}

.about-build h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 16px;
    text-align: center;
}

.about-license {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.about-license p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
}

.about-license strong {
    color: var(--text-primary);
}

/* ── Subpage Responsive ── */
@media (max-width: 768px) {
    .guide-two-col {
        grid-template-columns: 1fr;
    }

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

    .mission-line:first-child {
        font-size: 1.6rem;
    }

    .mission-highlight {
        font-size: 1.2rem !important;
    }

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

@media (max-width: 480px) {
    .page-header {
        padding: 120px 16px 40px;
    }

    .guide-section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .guide-emulator-list {
        grid-template-columns: 1fr;
    }

    .guide-control-grid {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: 1fr 1fr;
    }

    .mission-line {
        font-size: 1rem;
    }
}