:root {
  --bg: #052e16;
  --panel: #064e2b;
  --line: #14532d;
  --dot: #22c55e;
  --text: #ecfdf3;
  --muted: #bbf7d0;
  --zebra: #04361b;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

a {
  color: inherit;
}

svg {
  display: block;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 6vw;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.nav a {
  text-decoration: none;
  color: var(--muted);
  border-bottom: 1px solid transparent;
}

.nav a:hover {
  color: #fff;
  border-bottom-color: var(--dot);
}

.statusbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 6vw;
  background: #03180c;
  font-size: 13px;
  letter-spacing: 0.08em;
}

.pulse {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--dot);
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
  animation: pulse 1.6s infinite;
}

@keyframes pulse {
  70% {
    box-shadow: 0 0 0 10px rgba(34, 197, 94, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0);
  }
}

.hero {
  padding: 42px 6vw 28px;
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(28px, 4vw, 44px);
  max-width: 16ch;
}

.hero p {
  margin: 0 0 12px;
  max-width: 68ch;
  color: var(--muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  margin-top: 10px;
  background: var(--dot);
  color: #052e16;
  font-weight: 800;
  text-decoration: none;
  border-radius: 6px;
}

.section {
  padding: 28px 6vw;
}

.section h2 {
  margin: 0 0 12px;
  font-size: 26px;
}

.lead {
  color: var(--muted);
  margin: 0 0 18px;
  max-width: 72ch;
}

.icons5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.icons5 article {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 14px;
}

.icons5 h3 {
  margin: 10px 0 6px;
  font-size: 16px;
}

.icons5 p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}

.track::before {
  content: "";
  position: absolute;
  left: 4%;
  right: 4%;
  top: 22px;
  height: 3px;
  background: linear-gradient(90deg, var(--dot), #86efac);
}

.tstep {
  padding: 0 10px 8px;
  position: relative;
}

.tdot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--dot);
  margin-bottom: 14px;
  position: relative;
  z-index: 1;
}

.tstep h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.tstep p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.grid2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.grid2 article,
.note-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 18px;
}

.grid2 h3,
.note-card h3 {
  margin: 0 0 8px;
}

.grid2 p,
.note-card p {
  margin: 0 0 8px;
  color: var(--muted);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
}

th,
td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
}

tbody tr:nth-child(odd) {
  background: var(--zebra);
}

.term {
  display: grid;
  gap: 8px;
}

.qa {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  background: #03180c;
  border-left: 3px solid var(--dot);
  padding: 14px 16px;
}

.qa .q,
.qa .a {
  min-width: 0;
}

.qa .lab {
  display: inline-block;
  color: var(--dot);
  font-weight: 800;
  margin-right: 8px;
}

.qa p {
  margin: 6px 0 0;
  color: var(--muted);
}

.qa strong {
  color: #fff;
  font-weight: 700;
}

.footer {
  padding: 24px 6vw 36px;
  border-top: 2px solid var(--dot);
  color: var(--muted);
  font-size: 13px;
}

.footer p {
  margin: 0 0 8px;
}

@media (max-width: 900px) {
  .header,
  .icons5,
  .track,
  .grid2 {
    display: block;
  }

  .icons5 article,
  .tstep,
  .grid2 article {
    margin-bottom: 10px;
  }

  .track::before {
    display: none;
  }

  .qa {
    grid-template-columns: 1fr;
  }
}

#news .news-list { display: grid; gap: 12px; }
#news article { display: grid; grid-template-columns: 16px 1fr; gap: 0 14px; padding: 14px 0; border-bottom: 1px dashed var(--line); }
#news article::before { content: ""; width: 10px; height: 10px; margin-top: 7px; border-radius: 50%; background: var(--dot); box-shadow: 0 0 0 4px rgba(34,197,94,.2); }
#news h3 { margin: 0 0 4px; color: var(--text); font-size: 16px; }
#news time { color: var(--dot); font-size: 12px; }
#news p { margin: 6px 0 0; color: var(--muted); font-size: 14px; }