:root {
  --bg: #0a0a0a;
  --panel: #0e0e0e;
  --line: #232323;
  --line-soft: #1a1a1a;
  --fg: #ededed;
  --dim: #8a8a8a;
  --dimmer: #565656;
  --accent: #37d67a;
  --mono: "SF Mono", "JetBrains Mono", Consolas, "Cascadia Mono", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  -webkit-font-smoothing: antialiased;
}

body { padding: 0 0 60px; }

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 40px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: rgba(10, 10, 10, .92);
  backdrop-filter: blur(8px);
  z-index: 10;
}

.brand {
  color: var(--fg);
  text-decoration: none;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .02em;
}

.brand .en {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .22em;
  color: var(--dim);
  margin-left: 10px;
  font-weight: 400;
}

.nav { display: flex; gap: 34px; }

.nav a {
  color: var(--dim);
  text-decoration: none;
  font-size: 15px;
  padding-bottom: 6px;
  border-bottom: 1px solid transparent;
}

.nav a.on, .nav a:hover { color: var(--fg); border-bottom-color: var(--fg); }

main { max-width: 1280px; margin: 0 auto; padding: 0 40px; }

.crumb {
  color: var(--dimmer);
  font-size: 12px;
  letter-spacing: .06em;
  margin: 42px 0 6px;
}

.h1 {
  font-size: 44px;
  line-height: 1.1;
  margin: 0 0 34px;
  font-weight: 800;
  letter-spacing: -.01em;
}

.grid {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr) minmax(0, 1fr);
  gap: 26px;
  align-items: start;
}

.stack { display: flex; flex-direction: column; gap: 26px; }

.card {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 18px 20px 20px;
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 12px;
  color: var(--dim);
  letter-spacing: .05em;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
}

.muted { color: var(--dimmer); font-family: var(--mono); font-size: 11px; }

/* 时间线 */
.rail-body { padding-top: 14px; display: flex; flex-direction: column; gap: 0; }

.row {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 12.5px;
}

.row:last-child { border-bottom: 0; }

.row .t { font-family: var(--mono); color: var(--dimmer); font-size: 11px; padding-top: 2px; }
.row .n { color: var(--dim); }
.row .n b { color: var(--fg); font-weight: 500; }

.row.done .n b { color: var(--fg); }
.row.now { background: #131313; margin: 0 -8px; padding: 9px 8px; }
.row.now .n b { color: var(--accent); }
.row.now .t { color: var(--accent); }

/* 此刻 */
.live { display: flex; align-items: center; gap: 10px; margin: 20px 0 4px; }

.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--dimmer);
}

.dot.on { background: var(--accent); box-shadow: 0 0 0 4px rgba(55, 214, 122, .13); animation: pulse 2s infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .45; }
}

.live-cat { font-size: 20px; font-weight: 600; }

.clock {
  font-family: var(--mono);
  font-size: 52px;
  font-weight: 700;
  letter-spacing: -.02em;
  margin: 8px 0 2px;
  font-variant-numeric: tabular-nums;
}

.hint { color: var(--dimmer); font-size: 12px; margin: 0; }

/* 累计 */
.big {
  font-family: var(--mono);
  font-size: 46px;
  font-weight: 700;
  margin: 18px 0 14px;
  font-variant-numeric: tabular-nums;
}

.big .unit { font-size: 15px; color: var(--dim); margin: 0 6px 0 2px; font-weight: 400; }

.bar { height: 3px; background: #1c1c1c; overflow: hidden; margin-bottom: 16px; }
.bar i { display: block; height: 100%; width: 0; background: var(--fg); transition: width .6s ease; }

.kv { display: flex; gap: 34px; margin: 0; }
.kv div { display: flex; flex-direction: column; gap: 4px; }
.kv dt { color: var(--dimmer); font-size: 11.5px; }
.kv dd { margin: 0; font-family: var(--mono); font-size: 17px; }

/* 达标 */
.stat-line { margin: 20px 0 4px; font-family: var(--mono); }
.stat-line b { font-size: 40px; font-weight: 700; }
.stat-line .unit { color: var(--dim); font-size: 13px; margin-left: 4px; }

.sub { color: var(--dim); font-size: 12.5px; margin: 6px 0; }

.week {
  font-family: var(--mono);
  font-size: 17px;
  letter-spacing: .22em;
  color: var(--dim);
  margin: 14px 0 4px;
}

.about {
  margin-top: 54px;
  border-top: 1px solid var(--line);
  padding-top: 26px;
}

.about h2 { font-size: 15px; color: var(--dim); font-weight: 500; letter-spacing: .06em; margin: 0 0 14px; }
.about p { color: var(--fg); font-size: 15px; line-height: 1.8; margin: 0 0 10px; max-width: 620px; }
.about .fine { color: var(--dimmer); font-size: 13px; }

.foot {
  max-width: 1280px;
  margin: 54px auto 0;
  padding: 18px 40px 0;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  color: var(--dimmer);
  font-size: 11.5px;
  font-family: var(--mono);
}

@media (max-width: 1000px) {
  .grid { grid-template-columns: 1fr 1fr; }
  .rail { grid-column: 1 / -1; }
}

@media (max-width: 680px) {
  .top, main, .foot { padding-left: 20px; padding-right: 20px; }
  .grid { grid-template-columns: 1fr; }
  .h1 { font-size: 32px; }
  .clock { font-size: 40px; }
}