:root {
    color-scheme: light;
    --ink: #12323a;
    --muted: #607378;
    --paper: #f4efe4;
    --card: #fffdf8;
    --jade: #376c66;
    --gold: #c99c45;
    --red: #bd4c3a;
    --line: rgba(18, 50, 58, .14);
}

* { box-sizing: border-box; }

html { background: var(--paper); }

body {
    margin: 0;
    padding: 24px;
    color: var(--ink);
    background:
        radial-gradient(circle at 8% 5%, rgba(201, 156, 69, .15), transparent 24rem),
        radial-gradient(circle at 92% 90%, rgba(55, 108, 102, .13), transparent 30rem),
        var(--paper);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "Noto Sans", "Noto Sans CJK SC", sans-serif;
    font-size: 16px;
    line-height: 1.72;
}

main {
    max-width: 880px;
    margin: 0 auto;
    padding: 38px 44px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: var(--card);
    box-shadow: 0 22px 60px rgba(18, 50, 58, .10);
}

h1 {
    margin: 0;
    color: var(--ink);
    font-size: clamp(2rem, 6vw, 3.2rem);
    line-height: 1.08;
    text-align: center;
    letter-spacing: -.035em;
}

h1 small {
    display: block;
    margin-top: 9px;
    color: var(--red);
    font-size: .34em;
    letter-spacing: .08em;
    text-transform: uppercase;
}

h2 {
    margin: 34px 0 8px;
    color: var(--jade);
    font-size: 1.22rem;
    line-height: 1.32;
}

p { margin: 11px 0; }

ul {
    margin: 10px 0 20px;
    padding-left: 25px;
}

li { margin: 7px 0; }

a { color: var(--red); font-weight: 700; }

code {
    padding: 2px 5px;
    border-radius: 5px;
    background: #e9eee9;
    overflow-wrap: anywhere;
}

.languages {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 7px;
    margin: 22px 0 28px;
}

.languages a,
.languages span {
    padding: 5px 10px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--jade);
    background: #fff;
    font-size: .84rem;
    text-decoration: none;
}

.languages span {
    color: #fff;
    border-color: var(--jade);
    background: var(--jade);
    font-weight: 800;
}

.meta,
.notice {
    padding: 14px 16px;
    border-radius: 12px;
}

.meta {
    margin-top: 24px;
    color: var(--muted);
    background: #f0f3ed;
    text-align: center;
    font-size: .93rem;
}

.notice {
    margin-top: 26px;
    border-left: 4px solid var(--gold);
    background: #f4ead5;
}

footer {
    max-width: 880px;
    margin: 25px auto 0;
    color: var(--muted);
    font-size: .88rem;
    text-align: center;
}

@media (max-width: 640px) {
    body { padding: 10px; font-size: 15px; }
    main { padding: 25px 18px; border-radius: 16px; }
    h2 { margin-top: 29px; }
}