:root {
    color-scheme: dark;
    --bg: #0f1118;
    --bg-2: #1a1f2f;
    --text: #eef1ff;
    --muted: #c8cce0;
    --accent: #7fd5ff;
    --border: rgba(255, 255, 255, 0.14);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Google Sans', system-ui, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at 120% -10%, rgba(127, 213, 255, 0.2), transparent 45%),
        linear-gradient(170deg, var(--bg-2), var(--bg));
}

.page-shell {
    width: min(860px, 100% - 36px);
    margin: 0 auto;
    padding: 36px 0 46px;
}

.back-link {
    display: inline-block;
    color: var(--accent);
    margin-bottom: 14px;
    text-decoration: none;
}

.back-link:hover {
    text-decoration: underline;
}

h1 {
    font-size: clamp(1.9rem, 4vw, 2.8rem);
    margin: 0 0 12px;
    line-height: 1.15;
}

h2 {
    margin: 0 0 10px;
    font-size: 1.3rem;
}

p {
    line-height: 1.6;
    color: var(--muted);
}

.lead {
    font-size: 1.06rem;
    margin-bottom: 16px;
}

.panel {
    margin-top: 14px;
    padding: 16px 18px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    border-radius: 14px;
}

.panel a {
    color: var(--accent);
    margin-right: 12px;
    text-decoration: none;
}

.panel a:hover {
    text-decoration: underline;
}