:root {
    --bg: #FBFAF7;
    --fg: #1F2937;
    --secondary: #6B7280;
    --link: #6C5B3F;
    --border: #E8E3D8;
    --code-bg: #F3F1EC;
    --max-w: 680px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #1C1B18;
        --fg: #EBE5D8;
        --secondary: #9A9384;
        --link: #B8A878;
        --border: #3A362C;
        --code-bg: #25241F;
    }
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: "Source Han Serif SC", "Noto Serif SC", "PT Serif",
                 Georgia, "Times New Roman", serif;
    line-height: 1.8;
    font-size: 17px;
    -webkit-font-smoothing: antialiased;
}

main {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 64px 28px 80px;
}

header {
    margin-bottom: 48px;
}

h1 {
    font-size: 2.4em;
    margin: 0 0 8px;
    font-weight: 700;
    letter-spacing: -0.01em;
}

h2 {
    font-size: 1.4em;
    margin-top: 40px;
    margin-bottom: 12px;
    font-weight: 700;
}

h3 {
    font-size: 1.1em;
    margin-top: 28px;
    margin-bottom: 8px;
    font-weight: 600;
}

p {
    margin: 0 0 16px;
}

.tagline {
    color: var(--secondary);
    font-size: 1.05em;
    font-style: italic;
}

.updated {
    color: var(--secondary);
    font-size: 0.9em;
}

.back a {
    color: var(--secondary);
    text-decoration: none;
    font-size: 0.95em;
}

.back a:hover {
    color: var(--link);
}

a {
    color: var(--link);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.15s;
}

a:hover {
    border-bottom-color: var(--link);
}

ul {
    padding-left: 24px;
    margin: 0 0 20px;
}

li {
    margin-bottom: 8px;
}

code {
    background: var(--code-bg);
    border: 1px solid var(--border);
    padding: 1px 6px;
    border-radius: 4px;
    font-family: "SF Mono", Menlo, monospace;
    font-size: 0.9em;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 0.95em;
}

th, td {
    text-align: left;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
}

th {
    font-weight: 600;
    color: var(--secondary);
}

footer {
    margin-top: 64px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    color: var(--secondary);
    font-size: 0.9em;
    text-align: center;
}

section.links {
    margin-top: 48px;
}

header.hero {
    text-align: center;
    margin-bottom: 56px;
}

header.hero .app-icon {
    width: 128px;
    height: 128px;
    border-radius: 28px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    margin-bottom: 18px;
}

header.hero h1 {
    margin-top: 0;
}

header.hero .version {
    color: var(--secondary);
    font-size: 0.9em;
    margin-top: -4px;
}

section.screenshots {
    margin-top: 48px;
}

.shot-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 20px;
}

.shot-grid a {
    border-bottom: none;
    display: block;
    line-height: 0;
}

.shot-grid img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    border: 1px solid var(--border);
    transition: transform 0.2s, box-shadow 0.2s;
}

.shot-grid a:hover img {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
}

@media (max-width: 560px) {
    .shot-grid {
        grid-template-columns: 1fr;
    }
}