:root {
  color-scheme: dark;
  --bg: #0a0f15;
  --surface: #0f1620;
  --surface-2: #121c28;
  --text: #edf3f8;
  --muted: #99a8b7;
  --dim: #718192;
  --line: #223142;
  --line-strong: #31465d;
  --blue: #35aee8;
  --orange: #ff5a1f;
  --green: #45c894;
  --code: #060b10;
  --shadow: rgba(0,0,0,.24);
}

html[data-theme="light"] {
  color-scheme: light;
  --bg: #f7f9fb;
  --surface: #ffffff;
  --surface-2: #f0f4f8;
  --text: #19232d;
  --muted: #596a79;
  --dim: #778796;
  --line: #d8e0e8;
  --line-strong: #c1ccd7;
  --blue: #006f9f;
  --orange: #c84511;
  --green: #147858;
  --code: #edf2f6;
  --shadow: rgba(14,27,39,.08);
}

* { box-sizing: border-box; }
html { background: var(--bg); scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.62;
}

a { color: var(--blue); }
code, pre { font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace; }

.page-shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.utility-row {
  min-height: 58px;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 18px;
  border-bottom: 1px solid var(--line);
  font-size: .78rem;
}

.utility-row a {
  color: var(--muted);
  text-decoration: none;
}
.utility-row a:hover { color: var(--text); }

.theme-toggle {
  width: 31px;
  height: 31px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  padding: 0;
}
.theme-toggle:hover { color: var(--text); border-color: var(--blue); }
.theme-toggle:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.theme-icon { font-size: 15px; line-height: 1; }
html[data-theme="dark"] .theme-icon-moon { display: none; }
html[data-theme="light"] .theme-icon-sun { display: none; }

.brand-intro {
  padding: 48px 0 42px;
  text-align: center;
  border-bottom: 1px solid var(--line);
}

.brand-mark {
  display: block;
  width: min(850px, 92%);
  margin: 0 auto 24px;
}
.brand-mark img { display: block; width: 100%; height: auto; }
html[data-theme="dark"] .logo-light { display: none; }
html[data-theme="light"] .logo-dark { display: none; }
html[data-theme="dark"] .logo-dark { filter: drop-shadow(0 0 1px rgba(190,238,255,.35)); }

.intro-title {
  font-size: clamp(1.45rem, 3.2vw, 2.15rem);
  line-height: 1.18;
  font-weight: 700;
  letter-spacing: -.025em;
  margin: 0 auto 11px;
}

.intro-copy {
  width: min(820px, 100%);
  margin: 0 auto;
  color: var(--muted);
  font-size: .98rem;
}

.project-facts {
  margin: 24px auto 0;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 18px;
  color: var(--dim);
  font: 650 .72rem/1.5 "SFMono-Regular", Consolas, monospace;
  letter-spacing: .035em;
}
.project-facts span + span::before {
  content: "·";
  margin-right: 18px;
  color: var(--line-strong);
}

main { padding-bottom: 6px; }

.content-section {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 40px;
  padding: 38px 0;
  border-bottom: 1px solid var(--line);
}

.section-label {
  color: var(--dim);
  font: 700 .72rem/1.55 "SFMono-Regular", Consolas, monospace;
  letter-spacing: .09em;
  text-transform: uppercase;
  padding-top: 5px;
}

.section-body { min-width: 0; }
.section-body h2 {
  margin: 0 0 13px;
  font-size: 1.25rem;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -.015em;
}
.section-body p {
  margin: 9px 0;
  color: var(--muted);
}

.layer-list { border-top: 1px solid var(--line); }
.layer-list div {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 20px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.layer-list strong { color: var(--text); font-size: .9rem; }
.layer-list span { color: var(--muted); font-size: .9rem; }

.capability-list { border-top: 1px solid var(--line); }
.capability-list article {
  display: grid;
  grid-template-columns: minmax(180px, 270px) minmax(0, 1fr);
  gap: 30px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}
.capability-list h3 {
  margin: 0;
  font-size: .95rem;
  font-weight: 700;
}
.capability-list p { margin: 0; font-size: .91rem; }

.accent-section {
  background: linear-gradient(90deg, transparent 0, color-mix(in srgb, var(--surface-2) 78%, transparent) 14%, color-mix(in srgb, var(--surface-2) 78%, transparent) 86%, transparent 100%);
}

.security-list {
  border-top: 1px solid var(--line);
  margin-top: 18px;
}
.security-list p {
  padding: 13px 0;
  margin: 0;
  border-bottom: 1px solid var(--line);
}
.security-list strong { color: var(--text); }

.command-list { border-top: 1px solid var(--line); margin-top: 18px; }
.command-list div {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 18px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.command-list code { color: var(--green); font-size: .84rem; }
.command-list span { color: var(--muted); font-size: .9rem; }

.code-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 17px;
}
.code-label {
  margin: 0 0 7px;
  color: var(--dim);
  font: 700 .7rem/1.4 "SFMono-Regular", Consolas, monospace;
  letter-spacing: .06em;
}
pre {
  margin: 0;
  padding: 15px 16px;
  overflow: auto;
  background: var(--code);
  border: 1px solid var(--line);
  box-shadow: 0 8px 25px var(--shadow);
}
pre code { color: var(--text); font-size: .78rem; line-height: 1.62; }

.text-link {
  display: inline-block;
  margin-top: 10px;
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--blue) 55%, transparent);
}
.text-link:hover { border-bottom-color: var(--blue); }

.final-section { border-bottom: 0; }
.closing-line {
  max-width: 850px;
  font-size: 1.08rem;
  line-height: 1.55;
  font-weight: 650;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 28px;
  padding: 24px 0 34px;
  border-top: 1px solid var(--line);
}
.footer-copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--dim);
  font-size: .75rem;
  max-width: 700px;
}
.stride-powered { display: inline-block; flex: 0 0 auto; }
.stride-powered img { display: block; width: 190px; height: auto; opacity: .9; }

.doc-intro {
  padding: 34px 0 30px;
  border-bottom: 1px solid var(--line);
}
.doc-brand { display: inline-block; width: min(420px, 72%); margin-bottom: 18px; }
.doc-brand img { display: block; width: 100%; height: auto; }
.doc-title {
  font-size: clamp(1.35rem, 2.5vw, 1.8rem);
  font-weight: 700;
  letter-spacing: -.02em;
  margin-bottom: 8px;
}
.doc-intro p { max-width: 820px; margin: 0; color: var(--muted); }
.doc-main { padding-bottom: 6px; }

@media (max-width: 820px) {
  .page-shell { width: min(100% - 26px, 1180px); }
  .brand-intro { padding-top: 34px; }
  .brand-mark { width: min(760px, 100%); }
  .content-section { grid-template-columns: 1fr; gap: 10px; padding: 30px 0; }
  .section-label { padding-top: 0; }
  .capability-list article { grid-template-columns: 1fr; gap: 6px; }
  .code-pair { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .utility-row { min-height: 52px; gap: 13px; }
  .brand-intro { padding: 28px 0 30px; }
  .intro-title { font-size: 1.42rem; }
  .intro-copy { font-size: .93rem; }
  .project-facts { display: grid; gap: 5px; }
  .project-facts span + span::before { content: none; }
  .layer-list div,
  .command-list div { grid-template-columns: 1fr; gap: 4px; }
  .site-footer { align-items: flex-start; flex-direction: column; }
  .stride-powered img { width: 170px; }
  pre { padding: 12px; }
}