:root {
  --bg: #f4efe6;
  --bg-deep: #e5dccd;
  --panel: rgba(255, 250, 242, 0.88);
  --panel-strong: #fffaf2;
  --text: #1f2b24;
  --muted: #6b746e;
  --line: rgba(64, 74, 66, 0.14);
  --accent: #c85c38;
  --accent-2: #1f7a68;
  --accent-3: #245ca6;
  --shadow: 0 22px 60px rgba(61, 45, 24, 0.12);
  --radius: 26px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(200, 92, 56, 0.18), transparent 26%),
    radial-gradient(circle at bottom right, rgba(31, 122, 104, 0.16), transparent 24%),
    linear-gradient(145deg, #f8f1e8 0%, #efe6d7 48%, #e2d7c4 100%);
}

.shell {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 22px;
  padding: 22px;
}

.sidebar,
.main {
  display: grid;
  gap: 18px;
}

.brand {
  padding: 10px 8px 4px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.brand h1,
.hero h2,
.table-head h2,
.device-meta h2 {
  margin: 0;
  line-height: 1.05;
}

.brand h1 {
  font-size: 38px;
}

.lede,
.hero p,
.table-head p,
.device-meta p {
  color: var(--muted);
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.controls,
.stats,
.device-meta,
.hero,
.chart-card,
.table-card {
  padding: 20px;
}

.field {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
}

.field.split {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

label {
  color: var(--muted);
  font-size: 12px;
}

select,
button {
  width: 100%;
  min-height: 44px;
  border-radius: 14px;
  border: 1px solid var(--line);
  font: inherit;
}

select {
  padding: 0 14px;
  background: rgba(255, 255, 255, 0.8);
}

button {
  cursor: pointer;
  padding: 0 16px;
  background: #fff;
  color: var(--text);
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(34, 41, 36, 0.12);
}

button.primary {
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent) 0%, #db7e4b 100%);
  color: #fff;
}

.actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 10px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.stats span,
.hero-metrics span,
.device-meta dt {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.stats strong,
.hero-metrics strong {
  display: block;
  margin-top: 6px;
  font-size: 22px;
}

.device-meta dl {
  display: grid;
  gap: 12px;
  margin: 16px 0 0;
}

.device-meta div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.device-meta dd {
  margin: 0;
  text-align: right;
  word-break: break-all;
}

.toast {
  min-height: 20px;
  margin: 16px 0 0;
  color: var(--accent-2);
  font-size: 13px;
}

.hero {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 16px;
  min-height: 144px;
}

.hero h2 {
  font-size: 34px;
}

.hero-metrics {
  display: grid;
  gap: 10px;
  min-width: 190px;
}

.chart-card {
  overflow: hidden;
}

.channel-legend {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.channel-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.7);
  font-size: 13px;
}

.channel-pill i {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  display: inline-block;
}

canvas {
  width: 100%;
  height: auto;
  border-radius: 18px;
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(242, 247, 243, 0.88)),
    linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px),
    linear-gradient(180deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
  background-size: auto, 120px 100%, 100% 90px;
}

.table-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: end;
}

.table-wrap {
  margin-top: 16px;
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 980px;
}

th,
td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}

th {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

td {
  font-family: "Consolas", "SFMono-Regular", monospace;
  font-size: 13px;
}

@media (max-width: 1180px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .channel-legend {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .shell {
    padding: 14px;
    gap: 14px;
  }

  .brand h1,
  .hero h2 {
    font-size: 28px;
  }

  .field.split,
  .actions,
  .stats,
  .hero {
    grid-template-columns: 1fr;
  }

  .hero {
    display: grid;
  }

  .channel-legend {
    grid-template-columns: 1fr;
  }
}