:root {
  --sgi-ink: #101426;
  --sgi-coral: #ff617d;
  --sgi-mint: #33d6bd;
  --sgi-paper: #f4efe6;
  --sgi-violet: #6754c7;
  --sgi-graphite: #25293d;
  --sgi-line: #d8d3ca;
  --sgi-white: #ffffff;

  --sgi-ink-soft: #1b2038;
  --sgi-ink-90: rgba(16, 20, 38, 0.92);
  --sgi-text: #23283c;
  --sgi-muted: #55607a;
  --sgi-coral-deep: #d6415d;
  --sgi-mint-deep: #16a78f;

  --sgi-font-display: "Unbounded", "Trebuchet MS", "Segoe UI", system-ui, sans-serif;
  --sgi-font-body: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --sgi-shell: min(1480px, 92vw);
  --sgi-gap: clamp(1rem, 2.4vw, 2.4rem);
  --sgi-block: clamp(3rem, 7vw, 6rem);

  --sgi-radius: 6px;
  --sgi-radius-lg: 12px;
  --sgi-border: 1px solid var(--sgi-line);
  --sgi-border-ink: 1px solid rgba(16, 20, 38, 0.14);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  background: var(--sgi-paper);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--sgi-font-body);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.08rem);
  line-height: 1.62;
  color: var(--sgi-text);
  background: var(--sgi-paper);
  overflow-x: hidden;
}

body.sgi-lock-scroll {
  overflow: hidden;
}

h1,
h2,
h3,
h4,
h5 {
  font-family: var(--sgi-font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--sgi-ink);
  margin: 0 0 0.6em;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.3rem, 1.4rem + 4.4vw, 4.6rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.7rem, 1.2rem + 2.2vw, 2.9rem);
}

h3 {
  font-size: clamp(1.25rem, 1.05rem + 1vw, 1.7rem);
}

h4 {
  font-size: clamp(1.05rem, 0.98rem + 0.4vw, 1.25rem);
}

p {
  margin: 0 0 1.1em;
  text-wrap: pretty;
}

a {
  color: var(--sgi-coral-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--sgi-ink);
}

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

ul,
ol {
  margin: 0 0 1.1em;
  padding-left: 1.2em;
}

li {
  margin-bottom: 0.4em;
}

strong {
  color: var(--sgi-ink);
}

:focus-visible {
  outline: 3px solid var(--sgi-violet);
  outline-offset: 2px;
  border-radius: 2px;
}

.sgi-skip-link {
  position: absolute;
  left: 0.75rem;
  top: -120px;
  z-index: 200;
  background: var(--sgi-ink);
  color: var(--sgi-white);
  padding: 0.7rem 1.2rem;
  font-family: var(--sgi-font-display);
  font-size: 0.85rem;
  border-radius: var(--sgi-radius);
  transition: top 0.2s ease;
}

.sgi-skip-link:focus {
  top: 0.75rem;
  color: var(--sgi-white);
}

.sgi-shell {
  width: var(--sgi-shell);
  margin-inline: auto;
}

.sgi-eyebrow {
  font-family: var(--sgi-font-display);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--sgi-coral-deep);
  font-weight: 600;
  margin: 0 0 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.sgi-eyebrow::before {
  content: "";
  width: 1.6rem;
  height: 2px;
  background: var(--sgi-coral);
}

.sgi-chapter-label {
  font-family: var(--sgi-font-display);
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--sgi-muted);
  font-weight: 600;
}

.sgi-lede {
  font-size: clamp(1.1rem, 1rem + 0.6vw, 1.45rem);
  line-height: 1.5;
  color: var(--sgi-ink-soft);
}

.sgi-muted {
  color: var(--sgi-muted);
}

.sgi-rule {
  border: 0;
  border-top: var(--sgi-border);
  margin: var(--sgi-gap) 0;
}

.sgi-btn {
  --btn-bg: var(--sgi-coral);
  --btn-fg: var(--sgi-ink);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--sgi-font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0.85rem 1.5rem;
  min-height: 44px;
  border: 2px solid var(--btn-bg);
  background: var(--btn-bg);
  color: var(--btn-fg);
  border-radius: var(--sgi-radius);
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.sgi-btn:hover {
  transform: translateY(-2px);
  color: var(--btn-fg);
}

.sgi-btn--coral {
  --btn-bg: var(--sgi-coral);
  --btn-fg: var(--sgi-white);
}

.sgi-btn--mint {
  --btn-bg: var(--sgi-mint);
}

.sgi-btn--ink {
  --btn-bg: var(--sgi-ink);
  --btn-fg: var(--sgi-white);
}

.sgi-btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--sgi-ink);
  border-color: var(--sgi-ink);
}

.sgi-btn--ghost:hover {
  background: var(--sgi-ink);
  color: var(--sgi-white);
}

.sgi-btn__arrow {
  font-weight: 700;
}

.sgi-tag {
  display: inline-block;
  font-family: var(--sgi-font-display);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.28rem 0.6rem;
  border: 1px solid currentColor;
  border-radius: 3px;
  color: var(--sgi-violet);
  font-weight: 600;
}

.sgi-index-num {
  font-family: var(--sgi-font-display);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--sgi-coral);
}

.sgi-visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}