:root {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --text: #172033;
  --muted: #667085;
  --border: #dfe5ee;
  --primary: #0f9f6e;
  --primary-hover: #087854;
  --soft: #e8f7f1;
  --shadow: 0 16px 42px rgba(15, 23, 42, 0.08);
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
}

:root[data-theme="dark"] {
  --bg: #0d1117;
  --panel: #151b23;
  --text: #eef2f7;
  --muted: #a4afbd;
  --border: #263241;
  --primary: #41d29a;
  --primary-hover: #84e3bd;
  --soft: rgba(65, 210, 154, 0.13);
  --shadow: 0 18px 42px rgba(0, 0, 0, 0.28);
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 24px;
}

.panel {
  width: min(680px, 100%);
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: 34px;
  text-align: center;
}

.icon {
  display: grid;
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  place-items: center;
  border-radius: 8px;
  background: var(--soft);
  color: var(--primary);
}

.icon svg {
  width: 32px;
  height: 32px;
}

.kicker {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
}

h1 {
  margin: 0 0 12px;
  font-size: 28px;
  line-height: 1.25;
  letter-spacing: 0;
}

.desc {
  max-width: 520px;
  margin: 0 auto 24px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

.actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.primary-btn,
.secondary-btn {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
}

.primary-btn {
  gap: 8px;
  min-width: 168px;
  background: var(--primary);
  color: #ffffff;
  padding: 0 18px;
}

.primary-btn:hover {
  background: var(--primary-hover);
}

.secondary-btn {
  min-width: 132px;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0 16px;
}

.secondary-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.note {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

@media (max-width: 560px) {
  .page {
    padding: 14px;
  }

  .panel {
    padding: 26px 18px;
  }

  h1 {
    font-size: 24px;
  }

  .primary-btn,
  .secondary-btn {
    width: 100%;
  }
}