:root {
  color-scheme: light;
  --ink: #19212e;
  --muted: #5e6977;
  --soft: #f4f7fb;
  --line: #dbe4ef;
  --brand: #c72032;
  --brand-dark: #8f1423;
  --blue: #1769aa;
  --green: #0c7c59;
  --gold: #b7791f;
  --panel: #ffffff;
  --shadow: 0 18px 45px rgba(25, 33, 46, .10);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background: #fff;
  line-height: 1.65;
}
a { color: var(--blue); text-decoration-thickness: .08em; text-underline-offset: .18em; }
a:hover { color: var(--brand); }
.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 5;
  padding: 10px 14px;
  color: #fff;
  background: var(--ink);
  border-radius: 6px;
}
.skip-link:focus { top: 12px; }
.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.96);
  position: sticky;
  top: 0;
  z-index: 3;
  backdrop-filter: blur(12px);
}
.header-inner, .footer-inner, .wrap {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}
.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-weight: 800;
  font-size: 1.08rem;
  text-decoration: none;
}
.logo img { width: 42px; height: 42px; object-fit: contain; display: block; }
.logo span span { color: var(--brand); }
.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}
.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 7px 11px;
  border-radius: 6px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: .93rem;
}
.site-nav a:hover, .site-nav a[aria-current="page"] {
  background: var(--soft);
  color: var(--brand);
}
.hero {
  background:
    linear-gradient(105deg, rgba(25,33,46,.95), rgba(23,105,170,.82)),
    url("https://xaviermedia.s3.amazonaws.com/icons/125x125/125x125webdevelopment.png") right 8% center / 170px no-repeat;
  color: #fff;
}
.hero .wrap {
  min-height: 390px;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
  align-items: center;
  gap: 36px;
  padding: 58px 0 52px;
}
.eyebrow {
  margin: 0 0 10px;
  color: #cfe4f7;
  font-weight: 800;
  text-transform: uppercase;
  font-size: .78rem;
  letter-spacing: .08em;
}
h1, h2, h3 { line-height: 1.18; letter-spacing: 0; }
h1 {
  margin: 0;
  font-size: clamp(2.4rem, 6vw, 4.7rem);
  max-width: 780px;
}
.lead {
  max-width: 690px;
  margin: 18px 0 0;
  color: #edf5fc;
  font-size: clamp(1.05rem, 2.2vw, 1.34rem);
}
.hero-card {
  background: rgba(255,255,255,.11);
  border: 1px solid rgba(255,255,255,.24);
  border-radius: 8px;
  padding: 22px;
}
.hero-card h2 { margin: 0 0 10px; font-size: 1.15rem; }
.hero-card ul { margin: 0; padding-left: 19px; color: #edf5fc; }
.hero-card a { color: #fff; font-weight: 800; }
.hero-card a:hover { color: #d7ebff; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 800;
  border: 1px solid rgba(255,255,255,.35);
  color: #fff;
}
.button.primary { background: #fff; color: var(--brand-dark); border-color: #fff; }
.section { padding: 54px 0; }
.section.soft { background: var(--soft); }
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
}
.section-head h2, .content h2 { margin: 0; font-size: clamp(1.8rem, 3vw, 2.35rem); }
.section-head p { margin: 8px 0 0; color: var(--muted); max-width: 720px; }
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.card, .tool-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 22px;
  box-shadow: 0 1px 0 rgba(25,33,46,.03);
}
.card h3, .tool-card h3 { margin: 0 0 8px; font-size: 1.18rem; }
.card p, .tool-card p { margin: 0; color: var(--muted); }
.tool-card a { font-weight: 800; }
.content-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 315px;
  gap: 28px;
  align-items: start;
}
.content {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: clamp(22px, 4vw, 38px);
  box-shadow: var(--shadow);
}
.content > *:first-child { margin-top: 0; }
.content p { color: #364152; }
.toc, .side-panel {
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}
.toc h2, .side-panel h2 { margin: 0 0 12px; font-size: 1.08rem; }
.toc ol, .side-panel ul { margin: 0; padding-left: 20px; }
.side-panel {
  display: grid;
  gap: 18px;
}
.side-panel__section + .side-panel__section {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}
.side-panel__section p {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: .95rem;
}
.ai-roadmap-ad {
  background: linear-gradient(135deg, #fff3cf, #ffe0e7);
  border: 1px solid #efb145;
  border-radius: 8px;
  padding: 18px;
  box-shadow: 0 14px 32px rgba(143, 20, 35, .13);
}
.ai-roadmap-ad h2 {
  color: var(--brand-dark);
}
.ai-roadmap-ad p {
  color: #4f2d16;
}
.ai-roadmap-ad a {
  color: var(--brand-dark);
  font-weight: 900;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 22px 0;
  overflow-wrap: anywhere;
}
.data-table th, .data-table td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: middle;
}
.data-table th {
  background: #edf3f8;
  color: #243044;
}
.swatch {
  display: inline-block;
  width: 44px;
  height: 24px;
  border: 1px solid rgba(0,0,0,.22);
  border-radius: 4px;
  vertical-align: middle;
}
code, kbd {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  background: #eef3f8;
  border: 1px solid #d8e2ed;
  border-radius: 5px;
  padding: .08rem .3rem;
  color: #182234;
}
.article-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.site-footer {
  background: #141b26;
  color: #dbe5ef;
  padding: 42px 0 34px;
}
.site-footer a { color: #f0f6fb; }
.footer-top {
  display: grid;
  grid-template-columns: minmax(240px, .8fr) minmax(0, 1.2fr);
  gap: 34px;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
.footer-grid h2 { font-size: 1rem; margin: 0 0 9px; color: #fff; }
.footer-grid ul { margin: 0; padding-left: 18px; }
.footer-note { margin: 22px 0 0; color: #aebccc; font-size: .92rem; }
@media (max-width: 860px) {
  .header-inner { align-items: flex-start; flex-direction: column; padding: 14px 0; gap: 12px; }
  .site-nav ul { justify-content: flex-start; }
  .hero .wrap, .content-layout, .footer-top { grid-template-columns: 1fr; }
  .grid, .article-list, .footer-grid { grid-template-columns: 1fr; }
  .hero { background-position: right 18px top 18px; background-size: 96px; }
}