:root {
  --bg: #06070a;
  --panel: rgba(255,255,255,0.055);
  --line: rgba(255,255,255,0.14);
  --line-soft: rgba(255,255,255,0.08);
  --text: #f4f7fb;
  --muted: #9aa6b8;
  --cyan: #3ee8ff;
  --green: #90ff73;
  --amber: #ffd166;
  --max: 980px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; background: var(--bg); }
body {
  min-height: 100vh;
  font-family: Inter, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 8%, rgba(62,232,255,0.18), transparent 28rem),
    radial-gradient(circle at 85% 18%, rgba(255,209,102,0.12), transparent 24rem),
    linear-gradient(180deg, #07080d 0%, #090d13 45%, #050609 100%);
  line-height: 1.76;
}

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

.top {
  border-bottom: 1px solid var(--line-soft);
  background: rgba(6,7,10,0.78);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  max-width: 1180px;
  margin: 0 auto;
  min-height: 72px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 850;
}

.mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: #061015;
  background: linear-gradient(135deg, var(--cyan), var(--green));
  box-shadow: 0 0 32px rgba(62,232,255,0.28);
}

.back {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 15px;
  color: #dce7f5;
  font-size: 13px;
  font-weight: 800;
  background: rgba(255,255,255,0.045);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-btn {
  width: 42px;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #dce7f5;
  background: rgba(255,255,255,0.045);
  font: inherit;
  font-size: 12px;
  font-weight: 850;
  cursor: pointer;
}

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 76px 24px 96px;
}

.eyebrow {
  color: var(--green);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  max-width: 880px;
  margin-top: 16px;
  font-size: clamp(38px, 6vw, 74px);
  line-height: 1.02;
  letter-spacing: 0;
}

.lede {
  max-width: 780px;
  margin-top: 24px;
  color: #bac6d8;
  font-size: 18px;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 9px;
  color: #cbd6e8;
  font-size: 11px;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.article {
  margin-top: 52px;
  padding: clamp(24px, 5vw, 44px);
  border: 1px solid var(--line-soft);
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(255,255,255,0.075), rgba(255,255,255,0.032));
  box-shadow: 0 20px 80px rgba(0,0,0,0.28);
}

.article h2 {
  margin-top: 34px;
  margin-bottom: 12px;
  font-size: clamp(24px, 3.2vw, 36px);
  line-height: 1.14;
}

.article h2:first-child { margin-top: 0; }

.article p {
  margin-top: 14px;
  color: #bfcbdb;
}

.article ul,
.article ol {
  margin-top: 14px;
  padding-left: 22px;
  color: #cbd6e8;
}

.article li + li { margin-top: 8px; }

.callout {
  margin: 24px 0;
  padding: 18px;
  border: 1px solid rgba(62,232,255,0.24);
  border-radius: 12px;
  background: rgba(62,232,255,0.065);
  color: #e6f6ff;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 22px 0;
}

.stat {
  padding: 16px;
  border: 1px solid var(--line-soft);
  border-radius: 10px;
  background: rgba(255,255,255,0.05);
}

.stat b {
  display: block;
  color: var(--amber);
  font-size: 22px;
}

.stat span {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 13px;
}

.cta {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 22px;
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 14px;
  background: linear-gradient(120deg, rgba(62,232,255,0.14), rgba(144,255,115,0.10));
}

.cta p {
  margin: 0;
  color: #d8e5f6;
}

.btn {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0 16px;
  color: #061015;
  background: linear-gradient(135deg, var(--cyan), var(--green));
  font-size: 13px;
  font-weight: 850;
}

.source {
  margin-top: 28px;
  color: var(--muted);
  font-size: 13px;
}

.source a {
  color: var(--cyan);
}

footer {
  border-top: 1px solid var(--line-soft);
  color: var(--muted);
  padding: 28px 24px;
  text-align: center;
  font-size: 13px;
}

[data-lang="en"] [data-zh],
[data-lang="zh"] [data-en] {
  display: none !important;
}

@media (max-width: 720px) {
  .nav { padding: 0 16px; }
  main { padding: 54px 16px 72px; }
  .stat-grid { grid-template-columns: 1fr; }
  .brand span:last-child { display: none; }
  .back { padding: 0 12px; }
}