:root {
    color-scheme: dark;
    --ink: #070812;
    --panel: rgba(18, 16, 43, .82);
    --cyan: #37e8ff;
    --pink: #ff4fb8;
    --gold: #ffd166;
    --text: #f7f8ff;
    --muted: rgba(255,255,255,.72);
}

* { box-sizing: border-box; }

body {
    min-height: 100vh;
    margin: 0;
    padding: 28px 18px;
    color: var(--text);
    background:
        radial-gradient(circle at 15% 10%, rgba(55,232,255,.14), transparent 32%),
        radial-gradient(circle at 90% 20%, rgba(255,79,184,.12), transparent 35%),
        var(--ink);
    font-family: Inter, "Noto Sans JP", system-ui, sans-serif;
}

.info-shell {
    width: min(820px, 100%);
    margin: 0 auto;
}

.info-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    margin-bottom: 24px;
}

.brand,
.back-link,
.info-card a {
    color: var(--cyan);
    text-decoration: none;
}

.brand { font-weight: 900; letter-spacing: .08em; }
.back-link { font-weight: 700; }

.info-card {
    padding: clamp(24px, 5vw, 48px);
    border: 1px solid rgba(255,255,255,.18);
    border-radius: 24px;
    background: var(--panel);
    box-shadow: 0 24px 70px rgba(0,0,0,.35);
}

.eyebrow {
    color: var(--gold);
    font-weight: 900;
    letter-spacing: .14em;
}

h1 {
    margin: 10px 0 20px;
    font-size: clamp(2rem, 6vw, 3.7rem);
    line-height: 1.05;
}

h2 { margin-top: 32px; color: #fff1a8; }
p, li { color: var(--muted); line-height: 1.75; }

.cta {
    display: inline-flex;
    margin: 12px 8px 0 0;
    padding: 12px 18px;
    border: 1px solid rgba(55,232,255,.5);
    border-radius: 999px;
    background: rgba(55,232,255,.08);
    font-weight: 900;
}

.cta-support {
    color: #16101c !important;
    border-color: var(--gold);
    background: linear-gradient(90deg, var(--gold), #fff1a8);
}

.notice {
    margin-top: 28px;
    padding: 16px 18px;
    border-left: 4px solid var(--pink);
    background: rgba(255,79,184,.08);
    color: var(--muted);
}