/* StartGrid Guides — shared stylesheet for static /blog pages.
   Kept dependency-free (no Tailwind/JS) so these pages render fully from
   plain HTML + CSS for crawlers and stay in the StartGrid dark-indigo palette. */

:root {
  --sg-bg: #080808;
  --sg-surface: #0f0f0f;
  --sg-surface-2: #141414;
  --sg-border: #1e1e1e;
  --sg-border-2: #262626;
  --sg-text: #f5f5f5;
  --sg-text-muted: #a1a1aa;
  --sg-text-faint: #52525b;
  --sg-accent: #5b7fff;
  --sg-accent-hover: #4361ee;
  --sg-max: 720px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--sg-bg);
  color: var(--sg-text);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--sg-accent);
  text-decoration: none;
}

a:hover {
  color: var(--sg-accent-hover);
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
}

/* Top bar */
.sg-topbar {
  border-bottom: 1px solid var(--sg-border);
  background: var(--sg-bg);
  position: sticky;
  top: 0;
  z-index: 10;
}

.sg-topbar-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.sg-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--sg-text);
}

.sg-brand:hover {
  color: var(--sg-text);
  text-decoration: none;
}

.sg-brand img {
  width: 24px;
  height: 24px;
  display: block;
}

.sg-topnav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 13px;
  font-weight: 600;
}

.sg-topnav a {
  color: var(--sg-text-muted);
}

.sg-topnav a:hover {
  color: var(--sg-accent);
}

/* Breadcrumb */
.sg-breadcrumb {
  max-width: var(--sg-max);
  margin: 24px auto 0;
  padding: 0 20px;
  font-size: 12px;
  color: var(--sg-text-faint);
}

.sg-breadcrumb a {
  color: var(--sg-text-faint);
}

.sg-breadcrumb a:hover {
  color: var(--sg-accent);
}

.sg-breadcrumb span[aria-current] {
  color: var(--sg-text-muted);
}

/* Article shell */
.sg-article {
  max-width: var(--sg-max);
  margin: 0 auto;
  padding: 20px 20px 64px;
}

.sg-eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 11px;
  font-weight: 700;
  color: var(--sg-accent);
  margin: 20px 0 10px;
}

.sg-article h1 {
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
  color: var(--sg-text);
}

.sg-dek {
  font-size: 17px;
  color: var(--sg-text-muted);
  margin: 0 0 22px;
  max-width: 60ch;
}

.sg-meta {
  font-size: 12px;
  color: var(--sg-text-faint);
  border-top: 1px solid var(--sg-border);
  border-bottom: 1px solid var(--sg-border);
  padding: 10px 0;
  margin-bottom: 32px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.sg-article h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--sg-text);
  margin: 40px 0 14px;
}

.sg-article h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--sg-text);
  margin: 28px 0 10px;
}

.sg-article p {
  color: #d4d4d8;
  font-size: 16px;
  margin: 0 0 16px;
}

.sg-article ul,
.sg-article ol {
  color: #d4d4d8;
  font-size: 16px;
  margin: 0 0 16px;
  padding-left: 22px;
}

.sg-article li {
  margin-bottom: 8px;
}

.sg-article strong {
  color: var(--sg-text);
  font-weight: 700;
}

.sg-callout {
  background: var(--sg-surface);
  border: 1px solid var(--sg-border-2);
  border-left: 3px solid var(--sg-accent);
  border-radius: 8px;
  padding: 16px 18px;
  margin: 24px 0;
  font-size: 15px;
  color: #d4d4d8;
}

.sg-callout p:last-child {
  margin-bottom: 0;
}

/* FAQ */
.sg-faq {
  margin-top: 40px;
}

.sg-faq-item {
  border-top: 1px solid var(--sg-border);
  padding: 18px 0;
}

.sg-faq-item h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.sg-faq-item p {
  margin: 0;
  font-size: 15px;
}

/* CTA */
.sg-cta {
  margin-top: 44px;
  padding: 28px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(91, 127, 255, 0.14), rgba(67, 97, 238, 0.06));
  border: 1px solid rgba(91, 127, 255, 0.3);
  text-align: center;
}

.sg-cta h2 {
  margin-top: 0;
  margin-bottom: 8px;
}

.sg-cta p {
  color: var(--sg-text-muted);
  margin-bottom: 18px;
}

.sg-cta-button {
  display: inline-block;
  background: var(--sg-accent);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  padding: 12px 26px;
  border-radius: 8px;
}

.sg-cta-button:hover {
  background: var(--sg-accent-hover);
  color: #fff;
  text-decoration: none;
}

/* Disclaimer footer */
.sg-disclaimer {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--sg-border);
  font-size: 12px;
  color: var(--sg-text-faint);
  line-height: 1.6;
}

/* Site footer */
.sg-footer {
  border-top: 1px solid var(--sg-border);
  padding: 24px 20px 40px;
  text-align: center;
  font-size: 12px;
  color: var(--sg-text-faint);
}

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

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

/* Hub page */
.sg-hub {
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 20px 64px;
}

.sg-hub-head h1 {
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 12px;
}

.sg-hub-head p {
  color: var(--sg-text-muted);
  font-size: 16px;
  max-width: 60ch;
  margin: 0 0 40px;
}

.sg-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.sg-hub-card {
  display: block;
  padding: 22px;
  border: 1px solid var(--sg-border-2);
  border-radius: 12px;
  background: var(--sg-surface);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.sg-hub-card:hover {
  border-color: var(--sg-accent);
  text-decoration: none;
  transform: translateY(-2px);
}

.sg-hub-card .sg-hub-kicker {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 10px;
  font-weight: 700;
  color: var(--sg-accent);
  margin-bottom: 10px;
}

.sg-hub-card h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--sg-text);
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.sg-hub-card p {
  font-size: 13.5px;
  color: var(--sg-text-muted);
  margin: 0;
}

@media (max-width: 600px) {
  .sg-topnav {
    gap: 12px;
  }
}