:root {
  --panel: #ffffff;
  --ink: #10203a;
  --muted: #64748b;
  --line: #e2e8f0;
  --accent: #2563eb;
  --accent-soft: #e8f0ff;
  --gold: #f59e0b;
  --silver: #94a3b8;
  --bronze: #c2703d;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: #f6f8fc;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 16px 14px 40px;
}

.hero {
  padding: 18px 18px 16px;
  border-radius: 16px;
  background: linear-gradient(135deg, #1d4ed8, #3b82f6 55%, #60a5fa);
  color: #fff;
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.22);
}

.hero h1 {
  margin: 0;
  font-size: 20px;
  letter-spacing: 0.5px;
}

.hero p {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.88);
}

.panel {
  margin-top: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.04);
}

.panel h2 {
  margin: 0 0 10px;
  font-size: 15px;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.toolbar label {
  font-size: 13px;
  color: var(--muted);
}

select {
  flex: 1 1 160px;
  min-height: 44px;
  padding: 0 12px;
  font-size: 14px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.btn {
  min-height: 44px;
  min-width: 88px;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid #c7d9ff;
  border-radius: 10px;
  cursor: pointer;
}

.btn[disabled] { opacity: 0.6; cursor: default; }

.meta {
  margin: 12px 0 4px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.6;
}

.board {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
}

.board li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
}

.board li:last-child { border-bottom: none; }

.rank {
  flex: 0 0 26px;
  height: 26px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: #cbd5e1;
}

.rank.r1 { background: var(--gold); }
.rank.r2 { background: var(--silver); }
.rank.r3 { background: var(--bronze); }

.speaker {
  flex: 1 1 auto;
  min-width: 0;
}

.speaker .name {
  display: block;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bar {
  margin-top: 6px;
  height: 6px;
  border-radius: 999px;
  background: #eef2f9;
  overflow: hidden;
}

.bar span {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, #2563eb, #60a5fa);
}

.count {
  flex: 0 0 auto;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
}

.count small {
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
}

.empty {
  margin: 14px 0 4px;
  padding: 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  background: #f8fafc;
  border: 1px dashed var(--line);
  border-radius: 12px;
}

.howto ul {
  margin: 0;
  padding-left: 20px;
  font-size: 13px;
  line-height: 1.8;
  color: #334155;
}

.error { color: #b91c1c; }

@media (max-width: 420px) {
  .wrap { padding: 12px 10px 32px; }
  .hero h1 { font-size: 18px; }
  .board li { gap: 8px; }
}