:root {
  color-scheme: dark;
  --bg: #000000;
  --panel: #1c1c1e;
  --panel-2: #111113;
  --text: #ffffff;
  --muted: #8e8e93;
  --faint: #5f5f66;
  --line: rgba(255, 255, 255, 0.12);
  --blue: #0a84ff;
  --green: #30d158;
  --orange: #ff9f0a;
  --red: #ff453a;
  --indigo: #5e5ce6;
  --max: 920px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  line-height: 1.68;
  letter-spacing: 0;
}

a {
  color: inherit;
}

.i18n,
.localized {
  display: none;
}

html[data-locale="en"] .i18n-en,
html[data-locale="zh-Hans"] .i18n-zh {
  display: inline;
}

html[data-locale="en"] .localized-en,
html[data-locale="zh-Hans"] .localized-zh {
  display: block;
}

.site-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.86);
  backdrop-filter: blur(18px);
}

.topbar-inner {
  width: min(100%, var(--max));
  min-height: 68px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  min-width: 0;
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(48, 209, 88, 0.28), rgba(10, 132, 255, 0.22));
  border: 1px solid rgba(48, 209, 88, 0.42);
  color: var(--green);
  font-size: 20px;
  font-weight: 800;
  line-height: 1;
}

.brand-name {
  display: block;
  font-size: 16px;
  font-weight: 700;
}

.brand-subtitle {
  display: block;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.2;
}

.nav {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  padding: 0 11px;
  border-radius: 9px;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  border: 1px solid transparent;
}

.nav a[aria-current="page"] {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.14);
  background: var(--panel);
}

.main {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 56px 20px 72px;
}

.hero {
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 14px;
  font-size: clamp(34px, 7vw, 56px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin: 0 0 12px;
  font-size: 22px;
  line-height: 1.26;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 8px;
  font-size: 17px;
  line-height: 1.35;
}

.lead {
  max-width: 760px;
  margin-bottom: 20px;
  color: #d6d6dc;
  font-size: 18px;
}

.meta-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 14px;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 4px 10px;
  border-radius: 8px;
  background: rgba(48, 209, 88, 0.12);
  border: 1px solid rgba(48, 209, 88, 0.28);
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
}

.content-grid {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 34px;
  padding-top: 34px;
}

.toc {
  position: sticky;
  top: 96px;
  align-self: start;
}

.toc-title {
  margin: 0 0 10px;
  color: var(--faint);
  font-size: 12px;
  font-weight: 700;
}

.toc a {
  display: block;
  padding: 8px 0;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.toc a:hover {
  color: var(--text);
}

.content {
  min-width: 0;
}

.section {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}

.section:first-child {
  padding-top: 0;
}

.section p,
.section li {
  color: #d6d6dc;
}

.section p:last-child,
.section ul:last-child,
.section ol:last-child {
  margin-bottom: 0;
}

ul,
ol {
  margin: 0 0 16px;
  padding-left: 1.2em;
}

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

.summary-list {
  display: grid;
  gap: 10px;
  padding: 0;
  list-style: none;
}

.summary-list li {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 10px;
}

.summary-list li::before {
  content: "";
  width: 9px;
  height: 9px;
  margin-top: 10px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(48, 209, 88, 0.1);
}

.info-panel {
  margin: 18px 0 0;
  padding: 16px;
  border-radius: 12px;
  background: var(--panel);
  border: 1px solid var(--line);
}

.info-panel strong {
  color: var(--text);
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.support-card {
  padding: 18px;
  border-radius: 12px;
  background: var(--panel);
  border: 1px solid var(--line);
}

.support-card h3 {
  color: var(--text);
}

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

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

.status-item {
  min-height: 82px;
  padding: 13px;
  border-radius: 12px;
  background: var(--panel-2);
  border: 1px solid var(--line);
}

.status-value {
  display: block;
  color: var(--text);
  font-size: 15px;
  font-weight: 700;
}

.status-label {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.notice {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 12px;
  color: #f2d6a4;
  background: rgba(255, 159, 10, 0.1);
  border: 1px solid rgba(255, 159, 10, 0.28);
}

.footer {
  margin-top: auto;
  border-top: 1px solid var(--line);
}

.footer-inner {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 24px 20px 34px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
  font-size: 13px;
}

.footer-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.footer a {
  color: var(--muted);
  text-decoration: none;
}

.footer a:hover {
  color: var(--text);
}

@media (max-width: 760px) {
  .topbar-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 18px;
    gap: 12px;
  }

  .nav {
    justify-content: flex-start;
  }

  .main {
    padding: 38px 18px 54px;
  }

  .content-grid {
    display: block;
  }

  .toc {
    position: static;
    margin-bottom: 28px;
  }

  .toc a {
    display: inline-flex;
    margin-right: 12px;
    border-bottom: 0;
  }

  .support-grid,
  .status-row {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
  }
}