/* AI 会员自助充值 (ai.<domain>, app/vcc). Self-contained: emerald on ink, amber accents. */
:root {
  --bg: #f4f7f5;
  --surface: #ffffff;
  --surface-2: #eef4f1;
  --line: #d8e3dd;
  --text: #13201b;
  --muted: #5d6f67;
  --accent: #0f9f6e;
  --accent-strong: #0b7d56;
  --accent-soft: #dff5ec;
  --amber: #c98a12;
  --amber-soft: #fbf0d9;
  --danger: #c2413b;
  --danger-soft: #fbe6e4;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(16, 32, 26, .06), 0 12px 32px rgba(16, 32, 26, .07);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c1311;
    --surface: #131d19;
    --surface-2: #18251f;
    --line: #26362f;
    --text: #e6efea;
    --muted: #93a79d;
    --accent: #35c78f;
    --accent-strong: #5bd9a7;
    --accent-soft: #143428;
    --amber: #e3ad45;
    --amber-soft: #33270e;
    --danger: #ef7a72;
    --danger-soft: #3a1b19;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 32px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  overflow-x: hidden;
}
.glow { position: fixed; z-index: 0; border-radius: 50%; filter: blur(80px); opacity: .35; pointer-events: none; }
.glow-a { width: 420px; height: 420px; top: -160px; right: -120px; background: var(--accent); }
.glow-b { width: 360px; height: 360px; bottom: -180px; left: -140px; background: var(--amber); opacity: .18; }
.skip-link { position: absolute; left: -999px; }
.skip-link:focus { left: 16px; top: 12px; z-index: 10; background: var(--surface); padding: 6px 10px; border-radius: 8px; }
.hidden { display: none !important; }

.top, .wrap { position: relative; z-index: 1; width: min(720px, 100%); margin: 0 auto; padding: 0 16px; }
.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 20px; padding-bottom: 8px; }
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark {
  display: grid; place-items: center; width: 40px; height: 40px; flex: none; border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong)); color: #fff; font-weight: 700; letter-spacing: .5px;
}
.brand-copy { display: flex; flex-direction: column; min-width: 0; }
.brand-copy b { font-size: 16px; }
.brand-copy small { color: var(--muted); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 999px; font-size: 12px; background: var(--surface-2); color: var(--muted); white-space: nowrap; }
.pill i { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.pill-ok { background: var(--accent-soft); color: var(--accent-strong); }
.pill-off { background: var(--amber-soft); color: var(--amber); }

.intro { padding: 20px 0 8px; }
.intro h1 { margin: 0 0 6px; font-size: 26px; line-height: 1.25; letter-spacing: -.2px; }
.intro p { margin: 0 0 16px; color: var(--muted); }
.flow { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 0; padding: 0; list-style: none; }
.flow li { display: flex; align-items: center; gap: 8px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); font-size: 13px; }
.flow b { color: var(--accent); font-variant-numeric: tabular-nums; }

.tabs { display: flex; gap: 4px; margin: 16px 0 12px; padding: 4px; border-radius: 12px; background: var(--surface-2); width: max-content; }
.tab { border: 0; background: transparent; color: var(--muted); padding: 7px 16px; border-radius: 9px; font: inherit; cursor: pointer; }
.tab.active { background: var(--surface); color: var(--text); box-shadow: var(--shadow); font-weight: 600; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; margin-bottom: 16px; }
.field { margin-bottom: 18px; }
.field label { display: flex; align-items: center; gap: 8px; font-weight: 600; margin-bottom: 8px; }
.step-no { display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-strong); font-size: 12px; }
.row { display: flex; gap: 8px; align-items: center; }
.row.tools { flex-wrap: wrap; margin-top: 8px; }
.row.end { justify-content: flex-end; }
input, textarea {
  width: 100%; min-width: 0; border: 1px solid var(--line); border-radius: 12px; background: var(--surface-2); color: var(--text);
  padding: 11px 13px; font: inherit; outline: none; transition: border-color .15s, box-shadow .15s;
}
textarea { resize: vertical; font: 12.5px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
input { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; letter-spacing: .3px; }
input:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
input[aria-invalid="true"], textarea[aria-invalid="true"] { border-color: var(--danger); }

.btn { border: 1px solid transparent; border-radius: 12px; padding: 10px 16px; font: inherit; font-weight: 600; cursor: pointer; white-space: nowrap; transition: background .15s, opacity .15s; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: var(--accent); color: #fff; }
.btn.primary:not(:disabled):hover { background: var(--accent-strong); }
.btn.ghost { background: var(--surface-2); border-color: var(--line); color: var(--text); }
.btn.link { background: none; color: var(--accent-strong); padding-left: 4px; padding-right: 4px; }
.btn.small { padding: 6px 10px; font-size: 13px; border-radius: 9px; }
.btn.block { width: 100%; padding: 13px; font-size: 16px; }

.hint { margin: 6px 0 0; color: var(--muted); font-size: 13px; min-height: 1em; }
.hint.right { margin: 0 0 0 auto; }
.hint.error { color: var(--danger); }
.hint.ok { color: var(--accent-strong); }
.plan { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-top: 10px; padding: 12px; border-radius: 12px; background: var(--accent-soft); }
.plan small { display: block; color: var(--muted); font-size: 12px; }
.plan b { font-size: 15px; }
.notes { margin: 0 0 18px; padding: 12px 14px 12px 30px; border-radius: 12px; background: var(--amber-soft); color: var(--text); font-size: 13px; }
.notes li + li { margin-top: 4px; }
.message { margin: 12px 0 0; padding: 10px 12px; border-radius: 10px; background: var(--danger-soft); color: var(--danger); font-size: 14px; }

.order-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.order-head small, .order-meta dt { color: var(--muted); font-size: 12px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; word-break: break-all; }
.order-meta { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 14px 0; }
.order-meta div { min-width: 0; }
.order-meta dd { margin: 2px 0 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li { position: relative; display: flex; gap: 12px; padding: 0 0 16px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before { content: ""; position: absolute; left: 9px; top: 22px; bottom: 0; width: 2px; background: var(--line); }
.timeline li:last-child::before { display: none; }
.timeline i { flex: none; width: 20px; height: 20px; border-radius: 50%; border: 2px solid var(--line); background: var(--surface); margin-top: 2px; }
.timeline b { display: block; font-size: 14px; }
.timeline span { color: var(--muted); font-size: 13px; }
.timeline .done i { background: var(--accent); border-color: var(--accent); }
.timeline .done::before { background: var(--accent); }
.timeline .active i { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); animation: pulse 1.6s ease-in-out infinite; }
.timeline .warn i { border-color: var(--amber); background: var(--amber); }
.timeline .fail i { border-color: var(--danger); background: var(--danger); }
@keyframes pulse { 50% { box-shadow: 0 0 0 7px transparent; } }
@media (prefers-reduced-motion: reduce) { .timeline .active i { animation: none; } }
.result { margin: 16px 0 12px; padding: 12px 14px; border-radius: 12px; font-size: 14px; }
.result.ok { background: var(--accent-soft); color: var(--accent-strong); }
.result.warn { background: var(--amber-soft); color: var(--amber); }
.result.fail { background: var(--danger-soft); color: var(--danger); }
.verify { margin: 0 0 12px; padding: 14px; border: 1px solid var(--amber); border-radius: 12px; background: var(--amber-soft); display: grid; gap: 10px; }
.verify-copy b { display: block; color: var(--text); margin-bottom: 4px; }
.verify-copy p { margin: 0; font-size: 14px; line-height: 1.6; color: var(--muted); }
.verify-copy .hint { margin-top: 6px; }
.verify a.btn { text-align: center; text-decoration: none; }

.foot { color: var(--muted); font-size: 12px; text-align: center; padding: 8px 0 32px; }
.guide { border: 0; border-radius: var(--radius); padding: 0; width: min(440px, calc(100% - 32px)); background: var(--surface); color: var(--text); box-shadow: var(--shadow); }
.guide::backdrop { background: rgba(5, 12, 9, .5); }
.guide-inner { padding: 20px; }
.guide h2 { margin: 0 0 12px; font-size: 18px; }
.guide ol { margin: 0 0 12px; padding-left: 20px; }
.guide li p { margin: 2px 0 10px; color: var(--muted); font-size: 13px; }
.guide a { color: var(--accent-strong); word-break: break-all; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 20; padding: 9px 14px; border-radius: 10px; background: var(--text); color: var(--bg); font-size: 13px; }

@media (max-width: 560px) {
  .intro h1 { font-size: 22px; }
  .flow, .plan, .order-meta { grid-template-columns: 1fr; }
  .card { padding: 16px; }
  .brand-copy small { display: none; }
}

/* ── 版式与字号精修（客户页）：层级更清楚、表单更像表单 ─────────────────────────────────────────── */
body { font-size: 15px; line-height: 1.65; }
.glow-a { opacity: .22; }
.glow-b { opacity: .1; }
.top { padding-top: 24px; padding-bottom: 4px; }
.brand-copy b { font-size: 17px; font-weight: 650; }
.brand-copy small { font-size: 12.5px; }
.pill { padding: 5px 12px; font-size: 12.5px; font-weight: 600; }
.intro { padding: 28px 0 12px; }
.intro h1 { margin-bottom: 8px; font-size: 30px; font-weight: 700; line-height: 1.25; letter-spacing: -.01em; }
.intro p { max-width: 52ch; margin-bottom: 18px; font-size: 15.5px; line-height: 1.7; }
.flow li { padding: 11px 14px; font-size: 14px; font-weight: 500; }
.flow b { font-size: 13px; font-weight: 700; }
.tabs { margin: 22px 0 14px; }
.tab { padding: 8px 20px; font-size: 15px; }
.card { padding: 26px; border-radius: 18px; }
.field { margin-bottom: 22px; }
.field label { margin-bottom: 10px; font-size: 15.5px; font-weight: 650; }
.step-no { width: 24px; height: 24px; font-size: 13px; font-weight: 700; }
input, textarea { border-color: color-mix(in srgb, var(--line) 55%, var(--muted)); background: var(--surface); padding: 12px 14px; font-size: 15px; }
input { height: 48px; }
textarea { min-height: 150px; padding: 12px 14px; font-size: 13px; line-height: 1.6; }
input::placeholder, textarea::placeholder { color: color-mix(in srgb, var(--muted) 70%, transparent); }
input:hover, textarea:hover { border-color: var(--accent); }
.btn { padding: 11px 18px; font-size: 15px; }
.btn.small { padding: 7px 12px; font-size: 13.5px; }
.btn.block { padding: 15px; font-size: 16.5px; border-radius: 14px; }
.hint { font-size: 13.5px; line-height: 1.6; }
.plan { gap: 12px; padding: 14px 16px; }
.plan small { font-size: 12.5px; }
.plan b { font-size: 16px; font-weight: 700; }
.notes { padding: 14px 18px 14px 34px; font-size: 14px; line-height: 1.75; }
.notes li + li { margin-top: 6px; }
.message { font-size: 14.5px; }
.order-head small, .order-meta dt { font-size: 12.5px; }
.timeline b { font-size: 15px; }
.timeline span { font-size: 13.5px; }
.result { font-size: 14.5px; line-height: 1.7; }
.foot { font-size: 13px; }
@media (max-width: 560px) {
  .intro h1 { font-size: 24px; }
  .card { padding: 18px; }
  .intro { padding-top: 20px; }
}