@font-face {
    font-family: "Geist Mono";
    src: url("Geist_Mono/GeistMono-VariableFont_wght.ttf") format("truetype");
    font-weight: 100 900;
    font-display: swap;
}

:root {
    --bg: #ffffff;
    --text: #1a1a1a;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --border: #d0d0d0;
    --border-subtle: #eeeeee;
    --screenshot-border: #d0d0d0;
    --toggle-bg: transparent;
    --toggle-hover: #f0f0f0;
}

[data-theme="dark"] {
    --bg: #111111;
    --text: #e0e0e0;
    --text-secondary: #888888;
    --text-tertiary: #555555;
    --border: #2a2a2a;
    --border-subtle: #222222;
    --screenshot-border: #2a2a2a;
    --toggle-bg: transparent;
    --toggle-hover: #1e1e1e;
}

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

body {
    font-family: "Geist Mono", monospace;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    transition: background 0.2s, color 0.2s;
}

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

.page {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 100vh;
}

.col-left {
    padding: 48px 56px;
    border-right: 1px solid var(--border);
}

.col-right {
    padding: 48px 56px;
    display: flex;
    flex-direction: column;
}

.logo {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 48px;
}

.intro {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 48px;
    max-width: 400px;
    line-height: 1.7;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 36px;
}

.feature h2 {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
}

.feature p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.75;
    max-width: 420px;
}

.meta-block {
    margin-bottom: 48px;
}

.meta-row {
    display: flex;
    gap: 16px;
    padding: 6px 0;
    font-size: 12px;
    border-bottom: 1px solid var(--border-subtle);
}

.meta-row:first-of-type {
    border-top: 1px solid var(--border-subtle);
}

.meta-label {
    color: var(--text-tertiary);
    width: 100px;
    flex-shrink: 0;
}

.meta-value {
    color: var(--text);
}

.download-link {
    display: inline-block;
    margin-top: 24px;
    font-size: 13px;
    font-weight: 500;
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color 0.15s;
}

.download-link:hover {
    color: var(--text-secondary);
}

.screenshot {
    margin-bottom: 48px;
}

.screenshot img {
    width: 100%;
    height: auto;
    border: 1px solid var(--screenshot-border);
    display: block;
}

.theme-toggle {
    position: fixed;
    bottom: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 0;
    background: var(--toggle-bg);
    color: var(--text-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
    z-index: 10;
}

.theme-toggle:hover {
    background: var(--toggle-hover);
    color: var(--text);
}

.theme-toggle svg {
    width: 14px;
    height: 14px;
}

.icon-sun,
.icon-moon { display: none; }

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

footer {
    font-size: 11px;
    color: var(--text-tertiary);
    margin-top: auto;
}

@media (max-width: 700px) {
    .page {
        grid-template-columns: 1fr;
    }

    .col-left {
        border-right: none;
        border-bottom: 1px solid var(--border);
        padding: 32px 24px;
    }

    .col-right {
        padding: 32px 24px;
    }
}