:root { --bg: #f5f5f7; --card: rgba(255,255,255,.55); --text: #1d1d1f; --muted: #6e6e73; --line: rgba(0,0,0,.08); --accent: #007aff; --accent-deep: #0062d6; --red: #c8391a;
        --rim: rgba(255,255,255,.95); --glow: rgba(0,122,255,.16); --shadow: 0 10px 30px -8px rgba(0,0,0,.14), 0 30px 80px -30px rgba(0,0,0,.18); }
@media (prefers-color-scheme: dark) { :root { --bg: #0a0a0b; --card: rgba(40,40,44,.42); --text: #f5f5f7; --muted: #a1a1a6; --line: rgba(255,255,255,.09); --accent: #0a84ff; --accent-deep: #006ee0; --red: #ff7a5c;
        --rim: rgba(255,255,255,.3); --glow: rgba(10,132,255,.2); --shadow: 0 12px 36px -10px rgba(0,0,0,.6), 0 40px 100px -30px rgba(0,0,0,.7); } }
* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text); font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", system-ui, sans-serif; letter-spacing: -0.011em;
       background-image: radial-gradient(70vw 50vh at 50% -10%, var(--glow), transparent 70%); background-attachment: fixed;
       -webkit-font-smoothing: antialiased; min-height: 100vh; display: grid; place-items: center; padding: 48px 16px; }
main { width: 100%; max-width: 520px; text-align: center; }
.icon { width: 96px; height: 96px; margin: 0 auto 20px; filter: drop-shadow(0 14px 24px rgba(0,0,0,.22)); }
h1 { font-size: clamp(28px, 6vw, 40px); letter-spacing: -0.04em; line-height: 1.1; margin-bottom: 12px; }
p { color: var(--muted); }
p + p { margin-top: 10px; }
a { color: var(--accent); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; border-radius: 999px; font: 600 17px/1 inherit;
       font-family: inherit; color: #fff; padding: 15px 28px; cursor: pointer; text-decoration: none; margin-top: 24px;
       background: linear-gradient(180deg, rgba(255,255,255,.22), rgba(255,255,255,0) 55%), linear-gradient(180deg, var(--accent), var(--accent-deep));
       box-shadow: inset 0 1px 0 rgba(255,255,255,.45), inset 0 -1px 1px rgba(0,0,0,.12), 0 6px 20px -6px color-mix(in srgb, var(--accent) 70%, transparent);
       transition: transform .2s cubic-bezier(.3,1.4,.5,1); }
.btn:hover { transform: scale(1.03); }
.btn:active { transform: scale(.97); }
.btn.ghost { background: var(--card); color: var(--text); box-shadow: inset 0 0 0 1px var(--line), inset 0 1px 0 var(--rim); }
.key { margin: 24px 0 8px; padding: 20px; border-radius: 20px; background: var(--card); -webkit-backdrop-filter: blur(24px) saturate(190%); backdrop-filter: blur(24px) saturate(190%);
       box-shadow: inset 0 0 0 1px var(--line), inset 0 1px 0 var(--rim), var(--shadow);
       font: 600 clamp(15px, 4vw, 19px)/1.3 ui-monospace, "SF Mono", Menlo, monospace; letter-spacing: .02em; word-break: break-all; user-select: all; }
.steps { text-align: left; margin: 28px auto 0; max-width: 420px; color: var(--muted); padding-left: 20px; }
.steps li { margin: 6px 0; }
.error { color: var(--red); }
[hidden] { display: none !important; }
/* Long-form pages (terms, privacy, refunds) */
body.doc { display: block; }
main.doc { max-width: 720px; margin: 0 auto; text-align: left; }
.doc h1 { margin-bottom: 6px; }
.doc .updated { font-size: 14px; margin-bottom: 28px; }
.doc h2 { font-size: 20px; letter-spacing: -0.01em; margin: 32px 0 8px; }
.doc p, .doc li { color: var(--text); opacity: .86; }
.doc ul { padding-left: 22px; margin-top: 8px; }
.doc li { margin: 6px 0; }
.doc .back { display: inline-block; margin-bottom: 28px; font-size: 15px; text-decoration: none; }
.legal { margin-top: 28px; font-size: 14px; }
.legal a { color: var(--muted); margin: 0 8px; }