:root {
  color-scheme: dark;
  --bg: #0a0a0f;
  --surface: #15151f;
  --surface-strong: #1c1c29;
  --line: rgba(255, 255, 255, .12);
  --line-strong: rgba(141, 122, 255, .75);
  --text: #f4f4f7;
  --muted: #a7a7b4;
  --accent: #7a5cff;
  --accent-blue: #4aa8ff;
}

* { box-sizing: border-box; }

body {
  min-height: 100dvh;
  margin: 0;
  background:
    radial-gradient(circle at 80% 0, rgba(74, 168, 255, .18), transparent 34%),
    radial-gradient(circle at 5% 38%, rgba(122, 92, 255, .1), transparent 28%),
    var(--bg);
  color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", sans-serif;
}

main { width: min(980px, calc(100% - 32px)); margin: auto; padding: 28px 0 64px; }
a { color: inherit; }
.back { color: var(--muted); text-decoration: none; }
.back:hover { color: var(--text); }
.hero { padding: 42px 0 26px; }
.hero h1 { margin: 8px 0; font-size: clamp(34px, 6vw, 56px); letter-spacing: -.045em; line-height: 1.05; }
.muted { color: var(--muted); }
.kicker { margin: 0; color: #b7a9ff; font-size: 11px; font-weight: 750; letter-spacing: .14em; }

.info, .tabs, .fields { display: grid; gap: 12px; }
.info, .tabs { grid-template-columns: repeat(3, 1fr); }
.info div, .tab, .card, .result { border: 1px solid var(--line); border-radius: 16px; background: rgba(21, 21, 31, .92); }
.info div { padding: 15px; }
.info small, .info strong, .tab b, .tab small { display: block; }
.info small, .tab small { color: var(--muted); font-size: 12px; }
.info strong { margin-top: 4px; font-size: 13px; overflow-wrap: anywhere; }

.tabs { margin-top: 12px; }
.tab { display: flex; align-items: center; gap: 12px; padding: 15px; text-align: left; color: var(--muted); font: inherit; cursor: pointer; }
.tab:hover { border-color: rgba(141, 122, 255, .45); }
.tab[aria-selected="true"] { border-color: var(--line-strong); background: rgba(122, 92, 255, .16); color: var(--text); }
.tab-icon { display: grid; flex: 0 0 36px; width: 36px; height: 36px; place-items: center; border-radius: 11px; background: rgba(255, 255, 255, .08); color: #b7a9ff; font-size: 20px; }

.card, .result { margin-top: 14px; padding: 24px; }
.panel-intro { margin: 0 0 20px; color: var(--muted); }
.fields { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.field { display: grid; align-content: start; gap: 7px; }
.field.wide, .wide { grid-column: 1 / -1; }
.field > span { display: flex; justify-content: space-between; gap: 8px; }
.field em { color: var(--muted); font-size: 11px; font-style: normal; }
.field > small, .upload small, .check small { color: var(--muted); font-size: 11px; }
.field input, .field select, .field textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 11px 12px;
  background: #0e0e16;
  color: var(--text);
  font: inherit;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--line-strong); outline: 3px solid rgba(122, 92, 255, .12); }
.field textarea { min-height: 112px; resize: vertical; }

.upload { position: relative; display: grid; gap: 5px; min-height: 94px; place-content: center; border: 1px dashed rgba(183, 169, 255, .55); border-radius: 12px; padding: 18px; background: #0e0e16; text-align: center; cursor: pointer; }
.upload input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.upload b { color: #c8bdff; }
.upload-error { min-height: 1em; color: #ff9ca5 !important; }
.check { display: flex; align-items: flex-start; gap: 9px; color: var(--muted); font-size: 13px; }
.check input { flex: 0 0 auto; margin-top: 4px; accent-color: var(--accent); }
.check span, .check small { display: block; }
.alert { margin: 0; border-radius: 11px; padding: 12px 14px; background: rgba(183, 143, 70, .16); color: #e8cf9b; font-size: 12px; }

.actions { display: flex; gap: 10px; margin-top: 22px; }
.button { border: 0; border-radius: 999px; padding: 12px 18px; background: linear-gradient(90deg, var(--accent), var(--accent-blue)); color: #fff; font: 750 14px/1 inherit; cursor: pointer; }
.button:disabled { cursor: wait; opacity: .55; }
.button.quiet { border: 1px solid var(--line); background: transparent; color: var(--text); }
.button:focus-visible, .tab:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }
.error { min-height: 1.4em; margin-bottom: 0; color: #ff9ca5; }
.result { text-align: center; }
.result code { display: block; margin: 18px 0; color: #b7a9ff; overflow-wrap: anywhere; }
.success { display: grid; width: 48px; height: 48px; margin: auto; place-items: center; border-radius: 50%; background: #68d69a; color: #06210e; font-size: 27px; }

@media (max-width: 720px) {
  .info, .tabs, .fields { grid-template-columns: 1fr; }
  .hero { padding-top: 32px; }
  .actions { flex-wrap: wrap; }
  .tab { min-height: 76px; }
}