:root {
    color-scheme: dark;
    --bg-dark: #0a0a0f;
    --bg-card: #12121a;
    --bg-code: #1a1a2e;
    --neon-cyan: #00f5ff;
    --neon-magenta: #ff00ff;
    --neon-purple: #b366ff;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --border-color: #2a2a3a;
    --success-green: #4ec9b0;
    --warning-yellow: #dcdcaa;
    --bg: var(--bg-dark);
    --bg-elevated: var(--bg-card);
    --surface: var(--bg-card);
    --surface-soft: var(--bg-code);
    --border: var(--border-color);
    --text: var(--text-primary);
    --muted: var(--text-secondary);
    --accent: var(--neon-cyan);
    --accent-strong: var(--neon-cyan);
    --accent-ink: var(--bg-dark);
    --violet: var(--neon-purple);
    --terminal-bg: #09090f;
    --terminal-text: #f4f4fb;
    --terminal-muted: var(--text-secondary);
    --terminal-tool: var(--neon-purple);
    --terminal-label: var(--neon-cyan);
    --focus: #ffd166;
    --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
    --font-sans: "Space Grotesk", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    min-width: 320px;
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    line-height: 1.6;
}

body::before {
    position: fixed;
    z-index: -1;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(0, 245, 255, 0.03) 1px, transparent 1px),
        linear-gradient(rgba(0, 245, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    content: "";
    pointer-events: none;
}

a {
    color: inherit;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

:focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 3px;
}

.skip-link {
    position: fixed;
    top: 0.75rem;
    left: 0.75rem;
    z-index: 100;
    padding: 0.65rem 0.9rem;
    border-radius: 0.5rem;
    background: var(--text);
    color: var(--bg);
    font-weight: 700;
    transform: translateY(-160%);
    transition: transform 150ms ease;
}

.skip-link:focus {
    transform: translateY(0);
}

.site-header {
    position: sticky;
    z-index: 20;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    min-height: 4.5rem;
    margin: 0 auto;
    padding: 0.7rem max(1.25rem, calc((100vw - 1180px) / 2));
    border-bottom: 1px solid var(--border);
    background: color-mix(in srgb, var(--bg) 86%, transparent);
    backdrop-filter: blur(12px);
}

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1rem;
    font-weight: 700;
    text-decoration: none;
}

.brand-mark {
    font-size: 1.5rem;
    line-height: 1;
}

.site-brand > span:last-child {
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.site-nav a,
.theme-toggle {
    border: 0;
    background: transparent;
    color: var(--muted);
    font: inherit;
    font-size: 0.86rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
}

.site-nav a:hover,
.theme-toggle:hover {
    color: var(--neon-cyan);
}

.theme-toggle {
    padding: 0.45rem 0.65rem;
    border: 1px solid var(--border);
    border-radius: 6px;
}

.home-shell {
    width: min(1180px, calc(100% - 2.5rem));
    min-height: calc(100svh - 4.5rem);
    margin: 0 auto;
    padding: clamp(1.6rem, 3.5vw, 3.2rem) 0 1.5rem;
}

.hero-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.18fr) minmax(340px, 0.82fr);
    gap: clamp(2.5rem, 6vw, 6.5rem);
    align-items: center;
}

.eyebrow {
    margin: 0 0 0.85rem;
    color: var(--neon-cyan);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

h1,
h2,
p {
    margin-top: 0;
}

h1 {
    max-width: 780px;
    margin-bottom: 1.35rem;
    font-size: clamp(2.55rem, 5.3vw, 5.2rem);
    line-height: 0.98;
    letter-spacing: -0.055em;
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-magenta));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
}

.hero-copy > p:not(.eyebrow) {
    max-width: 720px;
    margin-bottom: 1rem;
    color: var(--muted);
    font-size: clamp(1rem, 1.3vw, 1.12rem);
}

.hero-copy .hero-definition {
    color: var(--text);
    font-size: clamp(1.05rem, 1.5vw, 1.22rem);
}

.hero-definition strong {
    color: var(--neon-cyan);
}

.flow {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.55rem;
    margin: 1.55rem 0 1.8rem;
    padding: 0;
    list-style: none;
}

.flow li {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 600;
}

.flow li:not(:last-child)::after {
    color: var(--neon-magenta);
    content: ">";
}

.hero-action {
    display: flex;
    align-items: center;
    gap: 1.1rem;
}

.primary-action {
    flex: 0 0 auto;
    padding: 0.86rem 1.2rem;
    border: 1px solid var(--neon-cyan);
    border-radius: 0.75rem;
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
    box-shadow: 0 12px 36px rgba(0, 245, 255, 0.18);
    color: var(--accent-ink);
    font-weight: 700;
    text-decoration: none;
    transition: transform 150ms ease, box-shadow 150ms ease;
}

.primary-action:hover {
    box-shadow: 0 16px 42px rgba(0, 245, 255, 0.28);
    transform: translateY(-2px);
}

.primary-action.disabled,
.primary-action[aria-disabled="true"] {
    cursor: not-allowed;
    opacity: 0.55;
    transform: none;
}

.language-picker {
    max-width: 720px;
    margin: 1.55rem 0;
    padding: 1rem 1.1rem;
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    background: var(--surface-soft);
}

.language-picker h2 {
    margin: 0 0 0.35rem;
    font-size: 1rem;
}

.language-picker p {
    margin-bottom: 0.7rem;
    color: var(--muted);
    font-size: 0.9rem;
}

.language-picker label {
    display: block;
    margin-bottom: 0.3rem;
    font-size: 0.85rem;
    font-weight: 700;
}

.language-picker select {
    width: min(100%, 20rem);
    padding: 0.6rem 0.7rem;
    border: 1px solid var(--border);
    border-radius: 0.45rem;
    background: var(--bg);
    color: var(--text);
    font: inherit;
}

.language-picker .language-detail {
    display: grid;
    gap: 0.35rem;
    margin: 0.8rem 0 0;
}

.language-detail code:empty,
.language-detail span:empty {
    display: none;
}

.language-detail code {
    width: fit-content;
    max-width: 100%;
    overflow-wrap: anywhere;
    color: var(--neon-cyan);
    font-family: var(--font-mono);
}

.hero-action p {
    max-width: 340px;
    margin: 0;
    color: var(--muted);
    font-size: 0.82rem;
    line-height: 1.45;
}

.terminal-preview {
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 1rem;
    background: var(--terminal-bg);
    box-shadow: var(--shadow);
    transform: rotate(0.75deg);
}

.terminal-bar {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    height: 2.65rem;
    padding: 0 0.9rem;
    border-bottom: 1px solid #283143;
    background: #111722;
}

.terminal-bar > span {
    width: 0.62rem;
    height: 0.62rem;
    border-radius: 50%;
    background: #ff6b6b;
}

.terminal-bar > span:nth-child(2) {
    background: #ffd166;
}

.terminal-bar > span:nth-child(3) {
    background: #55e487;
}

.terminal-bar p {
    margin: 0 0 0 0.35rem;
    color: var(--terminal-muted);
    font-family: var(--font-mono);
    font-size: 0.68rem;
}

.terminal-preview pre {
    min-height: 20.5rem;
    margin: 0;
    padding: 1.35rem;
    white-space: pre-wrap;
}

.terminal-preview code {
    color: var(--terminal-text);
    font-family: var(--font-mono);
    font-size: clamp(0.72rem, 1.1vw, 0.85rem);
    line-height: 1.75;
}

.terminal-muted {
    color: var(--terminal-muted);
}

.terminal-tool {
    color: var(--terminal-tool);
}

.terminal-label {
    color: var(--terminal-label);
    font-weight: 600;
}

.outcomes {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: clamp(2rem, 6vw, 6rem);
    align-items: start;
    margin-top: clamp(2rem, 5vh, 3.5rem);
    padding: 1.6rem 0 0;
    border-top: 1px solid var(--border);
}

.outcomes h2 {
    margin-bottom: 0;
    font-size: clamp(1.45rem, 2.3vw, 2.1rem);
    line-height: 1.15;
    letter-spacing: -0.03em;
}

.outcomes ul {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.65rem 1.5rem;
    margin: 0;
    padding: 0;
    color: var(--muted);
    list-style: none;
}

.outcomes li {
    position: relative;
    padding-left: 1.1rem;
}

.outcomes li::before {
    position: absolute;
    left: 0;
    color: var(--neon-cyan);
    content: "+";
    font-family: var(--font-mono);
    font-weight: 700;
}

@media (max-width: 900px) {
    .home-shell {
        padding-top: 2.5rem;
    }

    .hero-layout {
        grid-template-columns: 1fr;
    }

    .terminal-preview {
        width: min(100%, 620px);
        transform: none;
    }

    .terminal-preview pre {
        min-height: auto;
    }
}

@media (max-width: 650px) {
    .site-header,
    .home-shell {
        width: min(100% - 1.25rem, 1180px);
    }

    .site-nav {
        gap: 0.5rem;
    }

    .site-nav a {
        display: none;
    }

    h1 {
        font-size: clamp(2.45rem, 13vw, 4rem);
    }

    .hero-action {
        align-items: flex-start;
        flex-direction: column;
    }

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

    .outcomes ul {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}