:root {
  color-scheme: dark;
  --background: #090b0a;
  --surface: #141715;
  --surface-raised: #191c1a;
  --ink: #f2f4f2;
  --muted: #999e9a;
  --line: rgba(239, 244, 240, .13);
  --green: #8ee5bf;
  --font: Inter, "Noto Sans SC", "Microsoft YaHei", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { min-width: 320px; }

body {
  min-height: 100vh;
  margin: 0;
  background: var(--background);
  color: var(--ink);
  font-family: var(--font);
}

a { color: inherit; }

.platform-header {
  display: flex;
  width: min(100% - 40px, 960px);
  min-height: 88px;
  align-items: center;
  justify-content: space-between;
  margin: 0 auto;
}

.platform-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
}

.platform-brand img {
  width: 26px;
  height: 26px;
  border-radius: 5px;
  object-fit: contain;
}

.back-link {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  gap: 8px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--surface);
  font-size: 13px;
  font-weight: 650;
  text-decoration: none;
}

.platform-main {
  width: min(100% - 40px, 800px);
  margin: 0 auto;
  padding: 88px 0 64px;
}

.platform-intro { text-align: center; }

.platform-kicker {
  margin: 0 0 22px;
  color: var(--green);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0;
}

.platform-intro h1 {
  margin: 0;
  font-family: Georgia, "Noto Serif SC", "Songti SC", serif;
  font-size: clamp(38px, 5vw, 62px);
  font-weight: 400;
  line-height: 1.13;
  letter-spacing: 0;
}

.platform-lead {
  max-width: 650px;
  margin: 24px auto 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.platform-status {
  width: min(100%, 510px);
  margin: 50px auto 0;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.status-line {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--green);
  font-size: 12px;
  font-weight: 700;
}

.status-line span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(142, 229, 191, .09);
}

.platform-status h2 {
  margin: 18px 0 10px;
  font-size: 24px;
  font-weight: 650;
  letter-spacing: 0;
}

.platform-status > p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.privacy-note {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 12px;
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.6;
}

.privacy-note strong { font-weight: 700; }
.privacy-note span { color: var(--muted); }

.platform-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 46px;
}

.platform-links a {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  min-height: 92px;
  align-items: center;
  gap: 14px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  text-decoration: none;
}

.platform-links a:hover { background: var(--surface-raised); }

.link-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--green);
  font-size: 20px;
}

.link-mark.code { font-size: 13px; font-weight: 750; }

.platform-links strong,
.platform-links small { display: block; }

.platform-links strong {
  margin-bottom: 6px;
  font-size: 14px;
}

.platform-links small {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}

.platform-links i {
  color: var(--muted);
  font-size: 13px;
  font-style: normal;
}

@media (max-width: 640px) {
  .platform-header { min-height: 70px; }
  .platform-main { padding-top: 58px; }
  .platform-intro h1 { font-size: 36px; }
  .platform-lead { font-size: 14px; }
  .platform-status { margin-top: 38px; padding: 22px; }
  .platform-links { grid-template-columns: 1fr; margin-top: 28px; }
}

@media (max-width: 400px) {
  .platform-brand span { font-size: 13px; }
  .back-link { padding: 0 11px; font-size: 12px; }
  .platform-intro h1 { font-size: 31px; }
  .privacy-note { grid-template-columns: 1fr; gap: 5px; }
}