/* PULSE 骨架样式 — 沿用视觉原型的暗色仪器感 */

:root {
  --bg: #07090d;
  --panel: rgba(12, 16, 23, .85);
  --line: #202936;
  --text: #e9eef6;
  --muted: #7f8b9c;
  --faint: #566274;
  --accent: #d9ff68;
  --cyan: #79e6ff;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* 细网格底纹，和视觉原型一致 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 45%, rgba(121, 230, 255, .05), transparent 32%),
    linear-gradient(rgba(255, 255, 255, .018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .018) 1px, transparent 1px);
  background-size: auto, 34px 34px, 34px 34px;
}

/* ---------- 顶部栏 ---------- */

.topbar {
  display: flex;
  align-items: center;
  padding: 0 22px;
  height: 58px;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 9, 13, .92);
  z-index: 5;
}

.brand { font-weight: 800; letter-spacing: .26em; font-size: 17px; }
.brand span { color: var(--accent); }
.tag { margin-left: 18px; color: var(--muted); font-size: 12px; letter-spacing: .08em; }

.live { margin-left: auto; display: flex; align-items: center; gap: 8px;
  font-size: 12px; color: #b7c0cf; font-family: ui-monospace, monospace; }

.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--faint); }
.dot.on { background: var(--accent); box-shadow: 0 0 15px var(--accent);
  animation: pulse 1.4s infinite; }
@keyframes pulse { 50% { opacity: .4; transform: scale(.8); } }

/* ---------- 画布区 ---------- */

.stage { position: relative; flex: 1; min-height: 0; }

canvas { position: absolute; inset: 0; width: 100%; height: 100%; }

.overlay { position: absolute; left: 20px; top: 18px; pointer-events: none; }
.kicker { font-size: 10px; letter-spacing: .2em; color: var(--faint);
  font-family: ui-monospace, monospace; }
.headline { font-size: 26px; font-weight: 660; margin-top: 5px; letter-spacing: -.03em; }
.headline em { font-style: normal; color: var(--cyan); }
.sub { font-size: 12px; color: var(--muted); margin-top: 6px; max-width: 420px; }

.note { position: absolute; right: 18px; bottom: 14px; font-size: 9px;
  color: #4e5a6b; letter-spacing: .05em; font-family: ui-monospace, monospace; }

/* ---------- 底部指标 ---------- */

.bottom {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  background: var(--panel);
  padding: 12px 16px;
  gap: 10px;
}

.metric { padding: 6px 10px; border-right: 1px solid rgba(32, 41, 54, .8); }
.metric:last-child { border-right: 0; }
.metric .label { font-size: 9px; letter-spacing: .15em; color: #626f81;
  font-family: ui-monospace, monospace; }
.metric .value { font-size: 19px; font-weight: 680; margin-top: 6px;
  letter-spacing: -.03em; font-family: ui-monospace, monospace; }
.metric .meta { font-size: 10px; color: #687587; margin-top: 2px; }

@media (max-width: 700px) {
  .tag { display: none; }
  .bottom { grid-template-columns: repeat(2, 1fr); }
}