@font-face { font-family: 'Montserrat'; font-style: normal; font-weight: 400; src: url(/fonts/Montserrat-Regular_1.ttf) format('truetype'); }
@font-face { font-family: 'Montserrat'; font-style: normal; font-weight: 500; src: url(/fonts/Montserrat-Medium_1.ttf) format('truetype'); }
@font-face { font-family: 'Montserrat'; font-style: normal; font-weight: 600; src: url(/fonts/Montserrat-SemiBold_1.ttf) format('truetype'); }

:root {
  --primary: #0078e3;
  --primary-dark: #0062bb;
  --dark: #2e384e;
  --gray: #98a3aa;
  --muted: #5b6673;
  --surface: #f5f8fb;
  --white: #fff;
  --line: rgba(46, 56, 78, 0.10);
  --radius: 24px;
}

* { box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--surface);
  color: var(--dark);
  font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: min(1120px, 100% - 48px); margin: 0 auto; }

/* header */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand { font-weight: 600; font-size: 24px; color: var(--dark); letter-spacing: -0.5px; }
.brand span { color: var(--primary); }
.site-header nav { display: flex; gap: 28px; font-size: 15px; font-weight: 500; }
.site-header nav a { color: var(--dark); }
.site-header nav a:hover { color: var(--primary); text-decoration: none; }

main { padding: 56px 0 80px; }

/* typography */
h1, h2, h3 { font-weight: 600; color: var(--dark); line-height: 1.2; letter-spacing: -0.3px; }
h1 { font-size: clamp(32px, 4.6vw, 52px); margin: 0 0 16px; }
h2 { font-size: 26px; margin: 2em 0 0.6em; }
h3 { font-size: 20px; margin: 1.6em 0 0.5em; }
p { margin: 0 0 1em; }
.lead { font-size: 19px; color: var(--muted); max-width: 820px; }

/* hero */
.hero { padding: 24px 0 8px; }
.badge {
  display: inline-block; background: rgba(0, 120, 227, 0.10); color: var(--primary);
  border-radius: 999px; padding: 6px 14px; font-size: 13px; font-weight: 600; margin-bottom: 18px;
}
.actions { display: flex; gap: 14px; flex-wrap: wrap; margin: 28px 0 8px; }
.btn {
  display: inline-block; padding: 13px 22px; border-radius: 14px; font-weight: 600;
  font-size: 15px; border: 1.5px solid transparent; transition: background 0.15s, color 0.15s;
}
.btn.primary { background: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); text-decoration: none; }
.btn:not(.primary) { border-color: rgba(0, 120, 227, 0.35); color: var(--primary); background: #fff; }
.btn:not(.primary):hover { background: rgba(0, 120, 227, 0.06); text-decoration: none; }

/* cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; margin-top: 44px; }
.card {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: var(--radius);
  padding: 26px 26px 22px;
  box-shadow: 0 12px 34px rgba(46, 56, 78, 0.06);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.card h2 { font-size: 18px; margin: 0 0 8px; }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; }

/* code & tables */
pre {
  background: #fff; border: 1px solid var(--line); border-radius: 16px;
  padding: 16px 18px; overflow-x: auto; font-size: 13.5px; line-height: 1.55;
}
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: rgba(0, 120, 227, 0.07); color: #0059b3; border-radius: 6px; padding: 1px 6px; font-size: 0.92em;
}
pre code { background: none; color: inherit; padding: 0; }
table { border-collapse: collapse; width: 100%; margin: 1.2em 0; font-size: 15px; }
th, td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; vertical-align: top; }
th { background: var(--surface); font-weight: 600; }

/* manual */
.manual-toc { list-style: none; padding: 0; margin: 36px 0 0; }
.manual-toc > li {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  padding: 18px 22px;
  margin-bottom: 14px;
  box-shadow: 0 8px 24px rgba(46, 56, 78, 0.05);
}
.manual-toc > li > a { font-weight: 600; font-size: 18px; }
.manual-toc ul {
  list-style: none; padding: 10px 0 0; margin: 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 6px 20px; font-size: 14px;
}
.manual-toc ul a { color: var(--muted); font-weight: 400; }
.manual-toc ul a:hover { color: var(--primary); }

.manual-body { font-size: 16.5px; line-height: 1.72; }
.manual-body h1 { font-size: clamp(28px, 3.4vw, 36px); margin-top: 0; }
.manual-body h2 { font-size: 25px; margin-top: 2.2em; scroll-margin-top: 96px; }
.manual-body h3 { font-size: 19.5px; }
.manual-body a { text-decoration: underline; text-decoration-color: rgba(0, 120, 227, 0.35); }
.manual-body pre { background: #fff; }
.manual-body p { text-align: left; }

.manual-nav {
  display: flex; justify-content: space-between; gap: 16px; margin-top: 56px;
  padding-top: 22px; border-top: 1px solid var(--line); font-size: 15px; font-weight: 500;
}

.note { background: #fff; border-left: 4px solid var(--primary); border-radius: 12px; padding: 16px 20px; color: var(--muted); font-size: 15px; }

/* footer */
.site-footer { background: var(--dark); color: rgba(255, 255, 255, 0.72); padding: 40px 0; font-size: 14px; }
.site-footer a { color: #fff; }
.site-footer p { margin: 6px 0; }

@media (max-width: 640px) {
  .site-header .wrap { height: auto; padding: 12px 0; flex-direction: column; gap: 6px; }
  .site-header nav { gap: 16px; font-size: 14px; }
  main { padding: 36px 0 56px; }
}