:root {
  --green: #009e94;
  --green-dark: #008579;
  --green-soft: #e6f7f6;
  --ink: #1f2329;
  --ink-2: #4e5969;
  --ink-3: #86909c;
  --line: #e5e8ef;
  --bg: #f5f7fa;
  --white: #fff;
  --red: #f53f3f;
  --amber: #ff7d00;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(0, 0, 0, .04), 0 8px 24px rgba(15, 30, 60, .06);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--green); text-decoration: none; }
a:hover { color: var(--green-dark); }
h1, h2, h3, h4 { margin: 0; font-weight: 600; }
code, pre { font-family: "JetBrains Mono", Consolas, "Courier New", monospace; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: 1240px; margin: 0 auto; height: 62px;
  display: flex; align-items: center; gap: 28px; padding: 0 24px;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); }
.brand-mark {
  width: 32px; height: 32px; border-radius: 9px;
  background: linear-gradient(135deg, var(--green), #16c2a8);
  color: #fff; display: grid; place-items: center; font-weight: 700;
}
.brand-text { font-size: 17px; font-weight: 600; }
.brand-text em { font-style: normal; color: var(--green); margin-left: 6px; font-size: 13px; letter-spacing: .5px; }
.topnav { display: flex; gap: 4px; }
.topnav a {
  padding: 6px 14px; border-radius: 8px; color: var(--ink-2); font-size: 14px;
}
.topnav a:hover { background: var(--green-soft); color: var(--green-dark); }
.topnav a.active { background: var(--green-soft); color: var(--green-dark); font-weight: 600; }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.balance-pill {
  background: var(--green-soft); color: var(--green-dark);
  padding: 5px 12px; border-radius: 999px; font-size: 13px;
}
.balance-pill b { font-weight: 700; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 34px; padding: 0 16px; border-radius: 8px; border: 1px solid transparent;
  font-size: 14px; cursor: pointer; transition: .15s; background: transparent;
  font-family: inherit;
}
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-dark); color: #fff; }
.btn-ghost { border-color: var(--line); background: #fff; color: var(--ink-2); }
.btn-ghost:hover { border-color: var(--green); color: var(--green); }
.btn-link { color: var(--ink-3); }
.btn-link:hover { color: var(--green); }
.btn-danger { background: #fff; border-color: #ffd2d2; color: var(--red); }
.btn-danger:hover { background: #fff1f1; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-sm { height: 28px; padding: 0 10px; font-size: 13px; }

/* ---------- layout ---------- */
.page { max-width: 1240px; margin: 0 auto; padding: 28px 24px 64px; }
.card {
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.card + .card { margin-top: 18px; }
.card-head {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 20px; border-bottom: 1px solid var(--line);
}
.card-head h2 { font-size: 15px; }
.card-head .spacer { margin-left: auto; }
.card-body { padding: 20px; }
.muted { color: var(--ink-3); }
.small { font-size: 13px; }
.mono { font-family: Consolas, "Courier New", monospace; }

/* ---------- hero ---------- */
.hero {
  background: linear-gradient(135deg, #043b3a 0%, #0b5f58 45%, #009e94 100%);
  color: #fff; border-radius: 16px; padding: 44px 40px; margin-bottom: 22px;
  position: relative; overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; right: -80px; top: -80px;
  width: 320px; height: 320px; border-radius: 50%;
  background: rgba(255, 255, 255, .07);
}
.hero h1 { font-size: 30px; letter-spacing: .5px; }
.hero p { margin: 10px 0 0; color: rgba(255, 255, 255, .82); max-width: 620px; }
.hero-actions { margin-top: 22px; display: flex; gap: 12px; flex-wrap: wrap; }
.hero .btn-primary { background: #fff; color: var(--green-dark); }
.hero .btn-primary:hover { background: #e9fffd; color: var(--green-dark); }
.hero .btn-ghost { background: transparent; border-color: rgba(255, 255, 255, .45); color: #fff; }
.hero .btn-ghost:hover { background: rgba(255, 255, 255, .12); color: #fff; border-color: #fff; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 22px; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.stat .k { color: var(--ink-3); font-size: 13px; }
.stat .v { font-size: 24px; font-weight: 700; margin-top: 4px; color: var(--ink); }
.stat .v small { font-size: 13px; font-weight: 400; color: var(--ink-3); margin-left: 4px; }

/* ---------- toolbar ---------- */
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 14px; }
.input, select.input, textarea.input {
  height: 34px; padding: 0 12px; border: 1px solid var(--line); border-radius: 8px;
  font-size: 14px; color: var(--ink); background: #fff; outline: none; font-family: inherit;
}
.input:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(0, 158, 148, .12); }
textarea.input { height: auto; padding: 10px 12px; resize: vertical; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  padding: 5px 12px; border-radius: 999px; border: 1px solid var(--line);
  background: #fff; color: var(--ink-2); cursor: pointer; font-size: 13px; user-select: none;
}
.chip:hover { border-color: var(--green); color: var(--green); }
.chip.active { background: var(--green); border-color: var(--green); color: #fff; }

/* ---------- table ---------- */
table.grid { width: 100%; border-collapse: collapse; }
table.grid th, table.grid td {
  padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--line); font-size: 14px;
}
table.grid th { background: #fafbfc; color: var(--ink-2); font-weight: 600; font-size: 13px; white-space: nowrap; }
table.grid tbody tr:hover { background: #fafdfd; }
table.grid td.num { text-align: right; font-variant-numeric: tabular-nums; }
.tag {
  display: inline-block; padding: 1px 8px; border-radius: 6px;
  font-size: 12px; background: var(--green-soft); color: var(--green-dark);
}
.tag.gray { background: #f2f3f5; color: var(--ink-2); }
.tag.amber { background: #fff7e8; color: var(--amber); }
.tag.red { background: #fff1f1; color: var(--red); }

/* ---------- drawer ---------- */
.drawer-mask {
  position: fixed; inset: 0; background: rgba(15, 30, 60, .35);
  opacity: 0; pointer-events: none; transition: .2s; z-index: 80;
}
.drawer-mask.open { opacity: 1; pointer-events: auto; }
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; width: min(760px, 100%);
  background: #fff; box-shadow: -8px 0 32px rgba(15, 30, 60, .12);
  transform: translateX(100%); transition: .25s cubic-bezier(.4, 0, .2, 1);
  z-index: 90; display: flex; flex-direction: column;
}
.drawer.open { transform: translateX(0); }
.drawer-head { padding: 18px 22px; border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 12px; }
.drawer-head h3 { font-size: 16px; }
.drawer-body { padding: 20px 22px 40px; overflow: auto; }
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 18px; }
.tabs button {
  border: 0; background: transparent; padding: 10px 14px; font-size: 14px; cursor: pointer;
  color: var(--ink-2); border-bottom: 2px solid transparent; font-family: inherit;
}
.tabs button.active { color: var(--green); border-bottom-color: var(--green); font-weight: 600; }
.tab-pane { display: none; }
.tab-pane.active { display: block; }

pre.code {
  background: #0f1b2a; color: #d6e4f0; border-radius: 10px; padding: 16px;
  overflow: auto; font-size: 13px; line-height: 1.65; max-height: 460px; margin: 0;
}
pre.code .k { color: #7fd1ff; }
pre.code .s { color: #9ee493; }
pre.code .c { color: #6c8199; }
pre.inline {
  background: #f7f9fb; color: var(--ink); border: 1px solid var(--line);
  border-radius: 8px; padding: 12px; overflow: auto; font-size: 13px; margin: 0;
}

/* ---------- forms ---------- */
.form-row { margin-bottom: 16px; }
.form-row label { display: block; margin-bottom: 6px; color: var(--ink-2); font-size: 13px; }
.form-row .input { width: 100%; }
.hint { color: var(--ink-3); font-size: 12px; margin-top: 6px; }
.alert { padding: 10px 14px; border-radius: 8px; font-size: 13px; margin-bottom: 14px; }
.alert.error { background: #fff1f1; color: var(--red); }
.alert.ok { background: var(--green-soft); color: var(--green-dark); }

/* ---------- epay (QR + result) ---------- */
.qr-box {
  margin-top: 16px; padding: 16px; text-align: center;
  border: 1px dashed var(--line); border-radius: 10px; background: #fafdfd;
}
.qr-box img { width: 200px; height: 200px; margin: 8px auto; display: block; background: #fff; }
.qr-box a { color: var(--green-dark); font-size: 12px; }

/* ---------- auth ---------- */
.auth-wrap { max-width: 420px; margin: 48px auto; }
.auth-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); padding: 32px; }
.auth-card h1 { font-size: 22px; margin-bottom: 6px; }
.auth-card .sub { color: var(--ink-3); margin-bottom: 24px; font-size: 13px; }
.auth-foot { text-align: center; margin-top: 18px; color: var(--ink-3); font-size: 13px; }

/* ---------- toast ---------- */
.toast {
  position: fixed; left: 50%; top: 24px; transform: translate(-50%, -24px);
  background: #1f2329; color: #fff; padding: 10px 18px; border-radius: 8px;
  font-size: 14px; opacity: 0; pointer-events: none; transition: .25s; z-index: 200;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.err { background: var(--red); }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--line); background: #fff; margin-top: 40px; }
.footer-inner { max-width: 1240px; margin: 0 auto; padding: 32px 24px 22px; }
.footer-cols { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 28px; }
.footer h4 { font-size: 14px; margin-bottom: 8px; }
.footer p { color: var(--ink-3); font-size: 13px; margin: 4px 0; }
.footer-bottom { margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--ink-3); font-size: 12px; text-align: center; }

/* ---------- misc ---------- */
.kv { display: grid; grid-template-columns: 120px 1fr; gap: 8px 16px; font-size: 14px; }
.kv .k { color: var(--ink-3); }
.key-box {
  display: flex; align-items: center; gap: 10px; background: #f7f9fb;
  border: 1px dashed var(--line); border-radius: 8px; padding: 10px 14px;
}
.key-box code { font-size: 15px; letter-spacing: 1px; color: var(--green-dark); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.spin {
  width: 14px; height: 14px; border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff; border-radius: 50%; display: inline-block;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 900px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .grid-2, .grid-3, .footer-cols { grid-template-columns: 1fr; }
  .hero { padding: 30px 22px; }
  .hero h1 { font-size: 22px; }
  .topnav { display: none; }
  .page { padding: 18px 14px 48px; }
}