:root {
    color-scheme: dark;
    --bg: #000;
    --fg: #e8e8e8;
    --fg-dim: #888;
    --on-fg: #000;
    --border: rgba(255, 255, 255, 0.12);
    --border-soft: rgba(255, 255, 255, 0.07);
    --panel-bg: rgba(255, 255, 255, 0.02);
    --code-bg: rgba(255, 255, 255, 0.08);
    --topbar-bg: rgba(0, 0, 0, 0.7);
    --tdot-bg: rgba(255, 255, 255, 0.2);
    --cell-fill: rgba(255, 255, 255, 0.05);
    --cell-outline: rgba(255, 255, 255, 0.08);
    --cell-lit: rgba(160, 160, 160, 0.5);
    --btn-primary-hover: #cfcfcf;
    --mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

:root[data-theme="light"] {
    color-scheme: light;
    --bg: #f5f5f4;
    --fg: #1a1a1a;
    --fg-dim: #666;
    --on-fg: #fff;
    --border: rgba(0, 0, 0, 0.12);
    --border-soft: rgba(0, 0, 0, 0.06);
    --panel-bg: rgba(0, 0, 0, 0.02);
    --code-bg: rgba(0, 0, 0, 0.05);
    --topbar-bg: rgba(245, 245, 244, 0.75);
    --tdot-bg: rgba(0, 0, 0, 0.2);
    --cell-fill: rgba(0, 0, 0, 0.04);
    --cell-outline: rgba(0, 0, 0, 0.08);
    --cell-lit: rgba(0, 0, 0, 0.15);
    --btn-primary-hover: #333;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    background-color: var(--bg);
    color: var(--fg);
    margin: 0;
    font-family: var(--mono);
    line-height: 1.6;
}

a {
    color: var(--fg);
}

.grid-bg {
    position: absolute;
    top: 0;
    left: 0;
    display: grid;
    z-index: 0;
    pointer-events: none;
}

.grid-bg .cell {
    background-color: transparent;
    transition: background-color 0.6s ease, border-color 0.6s ease;
}

.grid-bg .cell-fill {
    background-color: var(--cell-fill);
}

.grid-bg .cell-outline {
    border: 1px solid var(--cell-outline);
}

.grid-bg .cell.lit {
    background-color: var(--cell-lit);
}

.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 32px;
    background: var(--topbar-bg);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--border-soft);
}

.brand {
    font-weight: bold;
    letter-spacing: 0.05em;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: none;
    color: var(--fg-dim);
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.theme-toggle:hover {
    color: var(--fg);
    border-color: var(--fg-dim);
}

.theme-icon {
    width: 16px;
    height: 16px;
}

.icon-moon {
    display: none;
}

:root[data-theme="light"] .icon-sun {
    display: none;
}

:root[data-theme="light"] .icon-moon {
    display: block;
}

.gh-link {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--fg-dim);
    border: 1px solid var(--border);
    padding: 6px 12px;
    border-radius: 4px;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.gh-link:hover {
    color: var(--fg);
    border-color: var(--fg-dim);
}

main {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
}

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 28px;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo pre {
    color: var(--fg);
    font-family: var(--mono);
    margin: 0;
    display: inline-block;
    text-align: left;
    line-height: 1;
}

.logo-img {
    display: none;
    width: min(85vw, 380px);
    height: auto;
}

@media (max-width: 640px) {
    .logo pre {
        display: none;
    }

    .logo-img-dark {
        display: block;
    }

    :root[data-theme="light"] .logo-img-dark {
        display: none;
    }

    :root[data-theme="light"] .logo-img-light {
        display: block;
    }
}

.cursor {
    animation: blink 1s steps(1) infinite;
}

@keyframes blink {
    0%, 50% {
        opacity: 1;
    }
    50.01%, 100% {
        opacity: 0;
    }
}

.tagline {
    color: var(--fg-dim);
    max-width: 520px;
    margin: 0;
}

.hero-actions {
    display: flex;
    gap: 14px;
}

.btn {
    font-family: var(--mono);
    font-size: 0.95rem;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 4px;
    border: 1px solid var(--border);
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn-primary {
    color: var(--on-fg);
    background-color: var(--fg);
    border-color: var(--fg);
}

.btn-primary:hover {
    background-color: var(--btn-primary-hover);
}

.btn-ghost {
    color: var(--fg);
}

.btn-ghost:hover {
    border-color: var(--fg-dim);
    color: var(--fg-dim);
}

.section {
    padding: 90px 0;
    border-top: 1px solid var(--border-soft);
}

.section-title {
    font-size: 1rem;
    font-weight: normal;
    color: var(--fg-dim);
    margin: 0 0 24px;
}

.prompt {
    color: var(--fg);
}

.panel {
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 28px;
    background: var(--panel-bg);
}

.panel p {
    margin: 0 0 16px;
}

.panel p:last-child {
    margin-bottom: 0;
}

.panel code {
    font-family: var(--mono);
    background: var(--code-bg);
    padding: 2px 6px;
    border-radius: 3px;
}

.callout {
    color: var(--fg-dim);
    border-left: 2px solid var(--border);
    padding-left: 16px;
}

.marquee {
    overflow: hidden;
    position: relative;
    padding: 20px 0;
    mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
    -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.marquee-track {
    display: flex;
    align-items: center;
    width: max-content;
    animation: marquee-scroll 16s linear infinite;
}

.marquee:hover .marquee-track {
    animation-play-state: paused;
}

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

.marquee-item {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
    margin-right: 72px;
    font-weight: bold;
    font-size: 1.1rem;
    color: var(--fg);
    white-space: nowrap;
}

.marquee-item .tech-icon {
    width: 40px;
    height: 40px;
}

.opencode-logo {
    height: 32px;
    width: auto;
    filter: invert(1);
}

:root[data-theme="light"] .opencode-logo {
    filter: none;
}

.claude-logo {
    height: 28px;
    width: auto;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 18px;
    margin-top: 40px;
}

.card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    text-align: center;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 32px 20px;
    background: var(--panel-bg);
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

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

.card .tech-icon {
    width: 44px;
    height: 44px;
}

.card .claude-logo {
    height: 44px;
}

.card .opencode-logo {
    height: 40px;
}

.card-name {
    margin: 0;
    font-weight: bold;
    font-size: 1.05rem;
}

.card-sdk {
    margin: 0;
    color: var(--fg-dim);
    font-size: 0.85rem;
    font-family: var(--mono);
}

.card-future {
    border-style: dashed;
    opacity: 0.85;
}

.card-future .tech-icon {
    filter: grayscale(1);
    opacity: 0.7;
}

.card-future-label {
    display: inline-block;
    margin: 0;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 4px 12px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--fg-dim);
}

.pills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 8px 16px;
    font-size: 0.85rem;
    color: var(--fg-dim);
}

.pill .tech-icon {
    width: 14px;
    height: 14px;
}

.terminal {
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
    background: var(--panel-bg);
}

.terminal-bar {
    display: flex;
    gap: 6px;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-soft);
}

.tdot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--tdot-bg);
}

.terminal-body {
    padding: 20px 24px;
}

.tline {
    margin: 0 0 8px;
}

.tcomment {
    margin: 0 0 16px;
    color: var(--fg-dim);
}

.prereq {
    margin-top: 18px;
    color: var(--fg-dim);
    font-size: 0.9rem;
}

.footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 40px 24px 60px;
    color: var(--fg-dim);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-soft);
}

.footer a {
    color: var(--fg-dim);
    text-decoration: none;
}

.footer a:hover {
    color: var(--fg);
}

.tech-icon {
    width: 16px;
    height: 16px;
    color: var(--fg-dim);
    flex-shrink: 0;
}

.icon-claude {
    color: #D97757;
}

.icon-openai {
    color: var(--fg);
}

.icon-opencode {
    color: var(--fg);
}

.icon-typescript {
    color: #3178C6;
}

.icon-node {
    color: #5FA04E;
}

.icon-fastify {
    color: var(--fg);
}

.icon-copilot {
    color: var(--fg);
}