:root {
  color-scheme: light;
  --bg: #f6f0e6;
  --panel: rgba(255, 252, 247, 0.92);
  --panel-border: rgba(32, 53, 56, 0.1);
  --text: #1f2f34;
  --muted: #66777d;
  --accent: #0e7c66;
  --accent-strong: #0a5f4e;
  --shadow: 0 20px 50px rgba(49, 42, 28, 0.1);
  --radius-xl: 24px;
  --radius-md: 16px;
  --font-body: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(220, 150, 89, 0.18), transparent 30%),
    radial-gradient(circle at top right, rgba(14, 124, 102, 0.14), transparent 24%),
    linear-gradient(180deg, #fbf7f0 0%, #efe4d6 100%);
}

.shell {
  width: min(960px, calc(100% - 28px));
  margin: 0 auto;
  padding: 36px 0;
}

.panel {
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-xl);
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: 24px;
}

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -0.03em;
}

.subtitle {
  margin: 8px 0 0;
  color: var(--muted);
}

.app-grid {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.app-card {
  display: grid;
  gap: 8px;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(32, 53, 56, 0.1);
  color: inherit;
  text-decoration: none;
  text-align: left;
  transition:
    transform 150ms ease,
    border-color 150ms ease,
    box-shadow 150ms ease;
}

.control-card {
  width: 100%;
  cursor: pointer;
  font: inherit;
}

.control-card:disabled {
  cursor: wait;
  opacity: 0.72;
}

.app-card:hover:not(:disabled) {
  transform: translateY(-1px);
  border-color: rgba(14, 124, 102, 0.24);
  box-shadow: 0 12px 24px rgba(31, 47, 52, 0.08);
}

.app-card span {
  color: var(--muted);
}