@font-face {
  font-family: "Space Grotesk";
  src: url("../assets/fonts/space-grotesk-regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Space Grotesk";
  src: url("../assets/fonts/space-grotesk-medium.ttf") format("truetype");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Space Grotesk";
  src: url("../assets/fonts/space-grotesk-bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --paper: #f8f6ff;
  --ink: #18131f;
  --muted: #4e4563;
  --line: #ddd6f0;
  --card: #ffffff;
  --accent: #6c2bff;
  --cta: #7c3cff;
  --cta-ink: #ffffff;
  --soft: #eee8ff;
  --max: 1080px;
  --radius: 20px;
  --shadow: 0 16px 40px rgba(36, 0, 140, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Space Grotesk", "Segoe UI", sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  font-size: 1.0625rem;
}

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

a { color: var(--accent); }

a:hover { text-decoration: none; }

h1, h2, h3 { line-height: 1.15; letter-spacing: -0.03em; font-weight: 500; }

h1 { font-size: clamp(2.4rem, 6vw, 4.4rem); margin: 0 0 0.6rem; }

h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); margin: 0 0 0.75rem; }

h3 { font-size: 1.25rem; margin: 0 0 0.4rem; }

p { margin: 0 0 1rem; }

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--ink);
  color: white;
  padding: 0.6rem 0.9rem;
  z-index: 20;
}

.skip:focus { top: 1rem; }

.wrap {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(248, 246, 255, 0.92);
  border-bottom: 1px solid transparent;
}

.site-header.is-stuck { border-bottom-color: var(--line); }

.nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  margin-right: auto;
}

.brand img, .icon-lg, .icon-xl {
  border-radius: 22%;
}

.nav-links {
  display: none;
  gap: 1.1rem;
  align-items: center;
}

.nav-links a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
}

.button, .button-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.7rem 1.1rem;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 500;
}

.button {
  background: var(--cta);
  color: var(--cta-ink);
}

.button-ghost {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--line);
}

.hero {
  display: grid;
  gap: 2rem;
  padding: 2.5rem 0 3rem;
  align-items: center;
}

.kicker {
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.6rem;
}

.lede { font-size: 1.2rem; color: var(--muted); max-width: 38rem; }

.actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin: 1.4rem 0 1rem; }

.facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
}

.facts li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 0.85rem 0.95rem;
  font-size: 0.95rem;
}

.hero-visual {
  display: grid;
  place-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 32px;
  box-shadow: var(--shadow);
  padding: 2rem;
}

.icon-xl { width: min(280px, 70vw); height: auto; }

section { padding: 3.5rem 0; }

.section-intro { max-width: 40rem; margin-bottom: 1.6rem; color: var(--muted); }

.grid-3, .grid-2, .grid-4 {
  display: grid;
  gap: 1rem;
}

.card, .guide-card, .step, .case, .faq details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem 1.25rem;
}

.card p, .step p, .case p, .guide-card p { color: var(--muted); }

.step-num {
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: var(--soft);
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.7rem;
}

.formula {
  font-size: 1.35rem;
  background: var(--soft);
  border-radius: 14px;
  padding: 0.8rem 1rem;
  margin: 0.4rem 0 0;
  color: var(--ink);
}

.guide-card { color: inherit; text-decoration: none; display: block; }

.guide-card strong { display: block; color: var(--ink); margin-bottom: 0.35rem; }

ol.steps-list, ul.clean { padding-left: 1.2rem; }

ol.steps-list li, ul.clean li { margin-bottom: 0.55rem; }

.faq details { margin-bottom: 0.75rem; }

.faq summary {
  cursor: pointer;
  font-weight: 500;
  min-height: 48px;
  display: flex;
  align-items: center;
}

.faq summary:focus-visible, a:focus-visible, .button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.cta-band {
  background: var(--ink);
  color: white;
  border-radius: 28px;
  padding: 2rem 1.4rem;
  display: grid;
  gap: 1rem;
  align-items: center;
}

.cta-band p { color: #e4dcff; }

.cta-band .brand-row { display: flex; gap: 0.9rem; align-items: center; }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0 6rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.footer-grid {
  display: grid;
  gap: 1rem;
}

.footer-links { display: flex; flex-wrap: wrap; gap: 0.8rem 1.1rem; }

.footer-links a { color: var(--ink); }

.crumbs { font-size: 0.92rem; color: var(--muted); margin-bottom: 1rem; }

.crumbs a { color: var(--muted); }

.article { max-width: 46rem; padding-bottom: 2rem; }

.related { display: grid; gap: 0.6rem; }

.sticky-cta {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.7rem 1rem calc(0.7rem + env(safe-area-inset-bottom));
  background: rgba(248, 246, 255, 0.96);
  border-top: 1px solid var(--line);
  display: none;
}

.sticky-cta .button { width: 100%; }

.note {
  font-size: 0.92rem;
  color: var(--muted);
}

@media (min-width: 760px) {
  .nav-links { display: flex; }
  .hero { grid-template-columns: 1.15fr 0.85fr; padding: 4rem 0; }
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .cta-band { grid-template-columns: auto 1fr auto; padding: 2.2rem; }
  .footer-grid { grid-template-columns: 1.4fr 1fr; align-items: start; }
  .site-footer { padding-bottom: 2.5rem; }
}

@media (min-width: 980px) {
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 759px) {
  .sticky-cta.is-visible { display: block; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}