:root {
    color-scheme: light dark;
    --bg: #f4f1ea;
    --card: rgba(255, 252, 245, 0.92);
    --ink: #1f2328;
    --muted: #5b6470;
    --line: rgba(31, 35, 40, 0.12);
    --accent: #0e7490;
    --accent-soft: rgba(14, 116, 144, 0.10);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #171717;
        --card: rgba(30, 30, 30, 0.94);
        --ink: #f4f4f5;
        --muted: #c2c7d0;
        --line: rgba(244, 244, 245, 0.12);
        --accent: #67e8f9;
        --accent-soft: rgba(103, 232, 249, 0.12);
    }
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "SF Pro Text", "PingFang SC", "Helvetica Neue", sans-serif;
    background:
        radial-gradient(circle at top left, rgba(14, 116, 144, 0.12), transparent 32%),
        radial-gradient(circle at top right, rgba(217, 119, 6, 0.10), transparent 28%),
        var(--bg);
    color: var(--ink);
    line-height: 1.65;
}

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

main {
    width: min(980px, calc(100vw - 32px));
    margin: 32px auto 56px;
}

.hero,
.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 24px;
    backdrop-filter: blur(14px);
    box-shadow: 0 14px 36px rgba(15, 23, 42, 0.08);
}

.hero {
    padding: 32px;
    margin-bottom: 20px;
}

.card {
    padding: 28px 32px;
    margin-bottom: 20px;
}

.eyebrow,
.section-label,
.locale-code {
    margin: 0 0 8px;
    color: var(--accent);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

h1 {
    margin: 0 0 12px;
    font-size: clamp(32px, 5vw, 48px);
    line-height: 1.1;
}

h2 {
    margin: 0 0 8px;
    font-size: 24px;
    line-height: 1.2;
}

.card h2 {
    margin-top: 32px;
}

.card h2:first-of-type {
    margin-top: 0;
}

h3 {
    margin: 24px 0 8px;
    font-size: 18px;
    line-height: 1.3;
}

p,
li {
    font-size: 16px;
}

.subtle,
.meta,
footer {
    color: var(--muted);
}

.meta {
    margin-top: 6px;
    font-size: 14px;
}

.note {
    margin-top: 16px;
    padding: 14px 16px;
    border-radius: 16px;
    border: 1px dashed var(--line);
    color: var(--muted);
    font-size: 14px;
}

.language-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.language-card {
    display: block;
    padding: 18px 20px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--accent-soft);
    text-decoration: none;
    color: inherit;
}

.language-card strong {
    display: block;
    margin-bottom: 4px;
    font-size: 19px;
}

.language-card span:last-child {
    color: var(--muted);
}

ul {
    margin: 10px 0 0 20px;
    padding: 0;
}

hr {
    margin: 24px 0;
    border: 0;
    border-top: 1px solid var(--line);
}

footer {
    margin-top: 12px;
    font-size: 14px;
    text-align: center;
}

@media (max-width: 760px) {
    main {
        width: min(980px, calc(100vw - 20px));
        margin: 20px auto 36px;
    }

    .hero,
    .card {
        padding: 22px 18px;
        border-radius: 20px;
    }

    .language-grid {
        grid-template-columns: 1fr;
    }
}