:root {
  --bg: #0B1220;
  --panel: #121a2b;
  --line: #1e2a40;
  --accent: #38BDF8;
  --accent-dim: #0ea5e9;
  --text: #E2E8F0;
  --mute: #94A3B8;
  --sharp: 2px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

a { color: inherit; text-decoration: none; }

svg { display: block; }

.mast {
  padding: 28px 20px 18px;
  text-align: center;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.brand svg { flex-shrink: 0; }

nav {
  margin-top: 16px;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 26px;
}

nav a {
  color: var(--mute);
  font-size: 14px;
  padding-bottom: 6px;
  border-bottom: 2px solid transparent;
}

nav a:hover {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.hero {
  max-width: 760px;
  margin: 0 auto;
  padding: 56px 20px 24px;
  text-align: center;
}

.hero h1 {
  font-size: 36px;
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 16px;
}

.hero p {
  color: var(--mute);
  margin-bottom: 26px;
}

.cta {
  display: inline-block;
  background: var(--accent);
  color: #082032;
  font-weight: 800;
  padding: 12px 28px;
  border-radius: var(--sharp);
  letter-spacing: 0.04em;
}

.cta:hover { background: #7dd3fc; }

.meters {
  margin: 40px auto 0;
  display: grid;
  gap: 14px;
  text-align: left;
}

.meter-top {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  margin-bottom: 6px;
  color: var(--mute);
}

.meter-top b { color: var(--text); font-weight: 600; }

.track {
  height: 8px;
  background: #1b2740;
  border-radius: var(--sharp);
  overflow: hidden;
}

.track i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent-dim), var(--accent));
}

.track.full i { width: 100%; }
.track.wide i { width: 86%; }
.track.mid i { width: 72%; }

.slab {
  max-width: 1000px;
  margin: 0 auto;
  padding: 42px 20px;
}

.slab h2 {
  font-size: 26px;
  margin-bottom: 12px;
}

.slab > p {
  color: var(--mute);
  margin-bottom: 22px;
  max-width: 46em;
}

.grid-23 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 14px;
}

.grid-23 article {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--sharp);
  padding: 18px 16px 20px;
}

.grid-23 h3 {
  font-size: 16px;
  margin: 10px 0 8px;
}

.grid-23 p,
.dual p,
.edge-list p { color: var(--mute); font-size: 14px; }

.ico {
  width: 34px;
  height: 34px;
  color: var(--accent);
}

.ico svg { width: 24px; height: 24px; }

.edge-list { list-style: none; display: grid; gap: 12px; }

.edge-list li {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--sharp);
  padding: 16px 18px;
}

.edge-list strong { display: block; margin-bottom: 6px; }

.dual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.dual article {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--sharp);
  padding: 22px 20px;
}

.dual h3 {
  font-size: 18px;
  margin-bottom: 10px;
  color: var(--accent);
}

.dual p + p { margin-top: 10px; }

.time-col {
  list-style: none;
  max-width: 560px;
  margin: 0 auto;
  position: relative;
}

.time-col::before {
  content: "";
  position: absolute;
  left: 27px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: #24324d;
}

.time-col li {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  margin-bottom: 22px;
  position: relative;
}

.time-col .num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  display: grid;
  place-items: center;
  font-size: 20px;
  font-weight: 800;
  background: var(--bg);
  position: relative;
  z-index: 1;
}

.time-col h3 { font-size: 17px; margin-bottom: 6px; }

.faq-dl dt {
  font-weight: 700;
  padding: 14px 0 6px;
  border-top: 1px solid var(--line);
  color: #fff;
}

.faq-dl dd {
  color: var(--mute);
  font-size: 14px;
  padding-bottom: 14px;
  padding-left: 16px;
  border-left: 2px solid var(--accent);
  margin-left: 2px;
}

.faq-dl dt:first-child { border-top: 0; }

.foot {
  text-align: center;
  padding: 36px 20px 48px;
  border-top: 1px solid var(--line);
  color: var(--mute);
  font-size: 13px;
}

.foot p { max-width: 36em; margin: 0 auto 8px; }

@media (max-width: 900px) {
  .grid-23 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  .hero h1 { font-size: 28px; }
  .grid-23,
  .dual { grid-template-columns: 1fr; }
  .time-col::before { left: 23px; }
}

#news .news-list { display: grid; gap: 14px; }
#news article { background: var(--panel); border: 1px solid var(--line); border-radius: 2px; padding: 16px 18px 16px 20px; border-left: 3px solid var(--accent); }
#news h3 { margin: 0 0 6px; color: #fff; font-size: 16px; }
#news time { display: inline-block; color: var(--accent); font-size: 12px; letter-spacing: .04em; margin-bottom: 8px; }
#news p { margin: 0; color: var(--mute); font-size: 14px; }