:root {
  --bg: #f5f5f7; --card: #ffffff; --text: #1d1d1f; --muted: #6e6e73; --line: #d2d2d7;
  --accent: #0a84ff; --accent-text: #ffffff; --ok: #1f9d55; --warn: #b25e00; --error: #d70015; --field: #ffffff;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #161618; --card: #232326; --text: #f2f2f5; --muted: #a1a1a6; --line: #3a3a3e; --field: #1b1b1d; --warn: #ffb340; --error: #ff6961; --ok: #32d74b; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.5 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, sans-serif; }
a { color: var(--accent); }
.wrap { max-width: 560px; margin: 0 auto; padding: 32px 16px 56px; }
.wide { max-width: 760px; }
.brand { display: flex; gap: 10px; align-items: center; font-weight: 700; font-size: 17px; text-decoration: none; color: inherit; }
.brand i { width: 30px; height: 30px; border-radius: 7px; background: linear-gradient(160deg, #4fa3ff, #2b5fd9); display: inline-block; }
.card { background: var(--card); border-radius: 16px; padding: 22px; margin-top: 20px; box-shadow: 0 1px 2px rgba(0,0,0,.06), 0 0 0 1px var(--line) inset; }
h1 { font-size: 26px; line-height: 1.2; margin: 24px 0 6px; letter-spacing: -.3px; }
h2 { font-size: 18px; margin: 28px 0 8px; }
.muted { color: var(--muted); }
.summary { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.summary b { display: block; }
.price { font-size: 22px; font-weight: 700; white-space: nowrap; text-align: right; }
.price s { color: var(--muted); font-weight: 500; font-size: 15px; margin-right: 6px; }
label { display: block; font-size: 13px; font-weight: 600; margin: 14px 0 5px; }
label em { font-weight: 400; color: var(--muted); font-style: normal; }
input, select { width: 100%; font: inherit; color: var(--text); background: var(--field); border: 1px solid var(--line); border-radius: 9px; padding: 9px 11px; }
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: transparent; }
.row { display: flex; gap: 12px; } .row > div { flex: 1; min-width: 0; }
.err { color: var(--error); font-size: 13px; margin-top: 4px; }
.invalid { border-color: var(--error); }
button.primary { width: 100%; margin-top: 20px; padding: 12px; border: 0; border-radius: 11px; background: var(--accent); color: var(--accent-text); font-family: inherit; font-size: 16px; font-weight: 600; cursor: pointer; }
button.primary:disabled { opacity: .55; cursor: default; }
.fine { font-size: 12.5px; color: var(--muted); text-align: center; margin-top: 10px; }
.notice { border-radius: 12px; padding: 14px 16px; margin-top: 20px; background: rgba(255,159,10,.12); }
.notice.ok { background: rgba(50,215,75,.12); }
.mock { border: 2px dashed var(--warn); }
footer { margin-top: 40px; font-size: 13px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 6px 16px; }
footer a { color: var(--muted); }
.tick { width: 64px; height: 64px; border-radius: 50%; background: rgba(50,215,75,.15); color: var(--ok); font-size: 34px; display: grid; place-items: center; margin: 12px auto 4px; }
.center { text-align: center; }
.placeholder { background: rgba(255,159,10,.18); border-radius: 4px; padding: 0 4px; }
@media (max-width: 480px) { .row { flex-direction: column; gap: 0; } h1 { font-size: 23px; } }