:root {
  --bg: #f3f5f9;
  --ink: #182230;
  --muted: #5a6e84;
  --card: #ffffff;
  --line: #d7e2ee;
  --accent: #0f766e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 0% 0%, #d8efe8 0, var(--bg) 48%);
}

.app-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  gap: 14px;
}

.topbar h1 {
  margin: 6px 0;
  font-size: 28px;
}

.sub {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.kicker {
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 1.1px;
  font-weight: 700;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
}

.card h2 {
  margin: 0 0 10px;
  font-size: 18px;
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
}

.tab {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
}

.tab.active {
  border-color: var(--accent);
  color: var(--accent);
}

.panel {
  display: none;
}

.panel.active {
  display: block;
}

.grid {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
}

input,
select {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.actions {
  margin-top: 10px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

button {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
}

button:hover {
  border-color: var(--accent);
}

.msg {
  margin: 8px 0 0;
  color: #1d4f6c;
  font-size: 13px;
}

.market-grid {
  margin-top: 10px;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.app-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  display: grid;
  gap: 8px;
}

.app-card h3 {
  margin: 0;
  font-size: 16px;
}

.app-meta {
  color: var(--muted);
  font-size: 12px;
}

.json {
  margin: 10px 0 0;
  padding: 10px;
  background: #0f172a;
  color: #e2e8f0;
  border-radius: 8px;
  overflow: auto;
  min-height: 120px;
}

.frame {
  width: 100%;
  min-height: 520px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.hidden {
  display: none;
}