:root {
  --orange: #ff6900;
  --ink: #111827;
  --muted: #667085;
  --line: #edf0f4;
  --bg: #f5f7fb;
  --card: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

.sidebar {
  width: 248px;
  padding: 24px;
  background: #fff;
  border-right: 1px solid var(--line);
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 28px;
}

.brand span {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--orange);
  color: #fff;
  font-size: 22px;
  font-weight: 900;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  margin-top: 3px;
  color: var(--muted);
}

.nav {
  width: 100%;
  height: 44px;
  margin-bottom: 10px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  text-align: left;
  padding: 0 14px;
  font-weight: 700;
  cursor: pointer;
}

.nav.active,
.nav:hover {
  color: var(--orange);
  background: #fff4ed;
}

.main {
  flex: 1;
  padding: 32px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

h1 {
  margin: 0;
  font-size: 30px;
}

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

button {
  height: 40px;
  border: 0;
  border-radius: 8px;
  padding: 0 16px;
  background: var(--orange);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
}

.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.card {
  background: var(--card);
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 12px 28px rgba(17, 24, 39, 0.04);
}

.num {
  color: var(--orange);
  font-size: 28px;
  font-weight: 900;
}

.label {
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 14px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 14px;
}

.table th {
  color: var(--muted);
}

.section-title {
  margin: 28px 0 12px;
  font-size: 18px;
  font-weight: 900;
}