:root {
    --green: #1f7a3f;
    --green-dark: #155c2e;
    --ink: #1c2024;
    --muted: #6b7280;
    --bg: #f6f7f8;
    --card: #ffffff;
    --border: #e3e6e8;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.55;
}

.container { width: min(960px, 92%); margin: 0 auto; }

.site-header {
    background: var(--green);
    color: #fff;
}
.site-header .brand {
    display: inline-block;
    padding: 1rem 0;
    color: #fff;
    font-weight: 700;
    text-decoration: none;
    font-size: 1.1rem;
}

main.container { padding: 2rem 0 3rem; }

.hero h1 { margin: 0 0 .4rem; font-size: 1.9rem; }
.hero p { color: var(--muted); max-width: 60ch; }

.notice {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1rem 1.2rem;
    margin: 1.5rem 0;
}
.notice-warn { border-color: #e0b400; background: #fff8e1; }
.notice code { background: #00000010; padding: .1em .35em; border-radius: 4px; }

.rooms h2 { margin-top: 2rem; }
.room-list {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0;
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}
.room-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.2rem;
}
.room-card h3 { margin: 0 0 .4rem; }
.room-meta { color: var(--muted); font-size: .9rem; }
.muted { color: var(--muted); font-size: .85rem; }

.site-footer {
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: .9rem;
}
.site-footer .container { padding: 1.2rem 0; }
.site-footer a { color: var(--green-dark); }