/* GT Workspace — public release-notes page (static, no scripts). */
:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #2563eb;
  --accent-soft: #e8efff;
  --code-bg: #f1f3f6;
  --head-bg: #0f172a;
  --head-text: #f8fafc;
  --head-muted: #94a3b8;
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1120;
    --panel: #111827;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --line: #1f2937;
    --accent: #60a5fa;
    --accent-soft: #172554;
    --code-bg: #0f172a;
    --head-bg: #020617;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.65 system-ui, "Segoe UI", Roboto, Arial, sans-serif; }
a { color: var(--accent); }

.rn-wrap { max-width: 1080px; margin: 0 auto; padding-left: 20px; padding-right: 20px; }

/* header */
.rn-top { background: var(--head-bg); color: var(--head-text); padding: 44px 0 40px; }
.rn-product { margin: 0; color: var(--head-muted); font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; }
.rn-top h1 { margin: 6px 0 4px; font-size: 34px; line-height: 1.2; }
.rn-lead { margin: 0; color: var(--head-muted); }

/* layout: version list on the left, notes on the right */
.rn-layout { display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: 36px; padding-top: 32px; padding-bottom: 32px; align-items: start; }
.rn-layout-empty { display: block; }
.rn-empty { color: var(--muted); text-align: center; padding: 60px 0; }

.rn-toc { position: sticky; top: 20px; }
.rn-toc h2 { margin: 0 0 8px; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.rn-toc ol { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--line); }
.rn-toc li { display: flex; justify-content: space-between; gap: 10px; padding: 5px 0 5px 14px; font-size: 14px; }
.rn-toc a { text-decoration: none; font-weight: 600; }
.rn-toc a:hover { text-decoration: underline; }
.rn-toc span { color: var(--muted); font-size: 12.5px; white-space: nowrap; }

/* one release */
.rn-list { display: grid; grid-template-columns: minmax(0, 1fr); gap: 24px; min-width: 0; }
.rn-release { min-width: 0; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 30px 22px; scroll-margin-top: 16px; }
.rn-release-head { border-bottom: 1px solid var(--line); padding-bottom: 12px; margin-bottom: 6px; }
.rn-release-head h2 { margin: 0; font-size: 26px; line-height: 1.25; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.rn-latest { font-size: 12px; font-weight: 700; color: var(--accent); background: var(--accent-soft); border-radius: 99px; padding: 2px 10px; letter-spacing: .03em; }
.rn-date { margin: 4px 0 0; color: var(--muted); font-size: 14px; }
.rn-edition + .rn-edition { border-top: 1px dashed var(--line); margin-top: 18px; }
.rn-edition-name { margin: 18px 0 0; font-size: 17px; color: var(--muted); }

/* rendered Markdown */
.rn-body { overflow-wrap: anywhere; }
.rn-body h3, .rn-body h4, .rn-body h5, .rn-body h6 { margin: 22px 0 6px; line-height: 1.3; }
.rn-body h3 { font-size: 19px; }
.rn-body h4 { font-size: 17px; }
.rn-body h5, .rn-body h6 { font-size: 15px; }
.rn-body p { margin: 10px 0; }
.rn-body ul, .rn-body ol { padding-left: 24px; margin: 10px 0; }
.rn-body li { margin: 4px 0; }
.rn-body code { background: var(--code-bg); border: 1px solid var(--line); border-radius: 5px; padding: 1px 5px; font: 0.9em/1.4 Consolas, ui-monospace, monospace; }
.rn-body pre { background: var(--code-bg); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; overflow-x: auto; }
.rn-body pre code { background: none; border: 0; padding: 0; }
.rn-body blockquote { margin: 12px 0; padding: 4px 16px; border-left: 4px solid var(--accent); color: var(--muted); background: var(--accent-soft); border-radius: 0 8px 8px 0; }
.rn-body hr { border: 0; border-top: 1px solid var(--line); margin: 20px 0; }
.rn-body table { border-collapse: collapse; margin: 12px 0; display: block; overflow-x: auto; max-width: 100%; }
.rn-body th, .rn-body td { border: 1px solid var(--line); padding: 7px 12px; text-align: left; }
.rn-body th { background: var(--code-bg); }
.rn-body .al-left { text-align: left; }
.rn-body .al-center { text-align: center; }
.rn-body .al-right { text-align: right; }

.rn-foot { color: var(--muted); font-size: 13px; padding-top: 6px; padding-bottom: 40px; }

@media (max-width: 820px) {
  .rn-layout { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .rn-toc { position: static; }
  .rn-toc ol { display: flex; flex-wrap: wrap; gap: 6px 16px; border-left: 0; }
  .rn-toc li { padding: 0; }
  .rn-release { padding: 20px 18px 16px; }
  .rn-top { padding: 32px 0 28px; }
  .rn-top h1 { font-size: 28px; }
}