/* FIXY base reset + typography + layout shell */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--ink);
  background:
    radial-gradient(120% 80% at 0% 0%, var(--mist) 0%, transparent 55%),
    radial-gradient(90% 70% at 100% 8%, var(--apricot) 0%, transparent 48%),
    var(--bg);
  background-attachment: fixed;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  word-break: break-word;
  overflow-wrap: anywhere;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover { color: var(--focus); }

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

button { cursor: pointer; }

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 520;
  letter-spacing: -0.02em;
  line-height: var(--lh-tight);
  color: var(--ink);
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); line-height: var(--lh-snug); }

p { margin: 0; }

ul, ol { margin: 0; padding: 0; list-style: none; }

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

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -100px;
  z-index: 1000;
  padding: 0.65rem 1rem;
  border-radius: var(--r-sm);
  background: var(--ink);
  color: var(--bg-elevated);
}

.skip-link:focus { top: 0.75rem; }

.container {
  width: min(100% - 2 * var(--gutter), var(--max));
  margin-inline: auto;
}

.container--wide {
  width: min(100% - 2 * var(--gutter), var(--max-wide));
}

.container--narrow {
  width: min(100% - 2 * var(--gutter), var(--max-narrow));
}

.section {
  padding-block: var(--section-y);
}

.section--tight {
  padding-block: clamp(2.5rem, 6vw, 4rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: var(--s-4);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.eyebrow::before {
  content: "";
  width: 1.25rem;
  height: 2px;
  background: linear-gradient(90deg, var(--apricot-deep), var(--mist-deep));
  border-radius: var(--r-pill);
}

.lead {
  font-size: var(--fs-lead);
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 40rem;
}

.muted { color: var(--ink-muted); }
.zh {
  font-size: 0.92em;
  color: var(--ink-muted);
  font-weight: 400;
}

.site-main {
  padding-top: var(--header-h);
  min-height: 70vh;
}

/* Site header */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  background: color-mix(in srgb, var(--bg-elevated) 78%, transparent);
  backdrop-filter: blur(14px);
  transition: border-color var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line-soft);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  width: min(100% - 2 * var(--gutter), var(--max-wide));
  margin-inline: auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--s-5);
}

.logo {
  display: inline-flex;
  align-items: baseline;
  gap: 0.15rem;
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  text-decoration: none;
  color: var(--ink);
}

.logo span {
  color: color-mix(in srgb, var(--apricot-deep) 70%, var(--ink));
}

.nav {
  display: flex;
  justify-content: center;
  gap: clamp(0.75rem, 1.8vw, 1.5rem);
}

.nav a {
  text-decoration: none;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--ink-soft);
  padding: 0.35rem 0;
  border-bottom: 2px solid transparent;
  transition: color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--apricot-deep);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.header-actions a.ghost-link {
  text-decoration: none;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--ink-soft);
  padding: 0.4rem 0.55rem;
}

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--surface);
  align-items: center;
  justify-content: center;
}

.nav-toggle__bars {
  width: 1.1rem;
  height: 0.85rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.nav-toggle__bars span {
  display: block;
  height: 2px;
  background: var(--ink);
  border-radius: var(--r-pill);
  transition: transform var(--dur) var(--ease-out), opacity var(--dur-fast);
}

.site-header.is-open .nav-toggle__bars span:nth-child(1) {
  transform: translateY(5.5px) rotate(45deg);
}
.site-header.is-open .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.site-header.is-open .nav-toggle__bars span:nth-child(3) {
  transform: translateY(-5.5px) rotate(-45deg);
}

/* Footer */
.site-footer {
  margin-top: var(--s-8);
  padding: var(--s-8) 0 var(--s-6);
  background: linear-gradient(180deg, transparent, var(--mist-soft) 30%);
  border-top: 1px solid var(--line-soft);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: var(--s-6);
}

.footer-brand p {
  margin-top: var(--s-3);
  max-width: 22rem;
  color: var(--ink-muted);
  font-size: var(--fs-sm);
}

.footer-col h4 {
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--s-3);
  color: var(--ink-muted);
}

.footer-col a {
  display: block;
  text-decoration: none;
  font-size: var(--fs-sm);
  color: var(--ink-soft);
  padding: 0.28rem 0;
}

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

.footer-bottom {
  margin-top: var(--s-7);
  padding-top: var(--s-4);
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-3);
  justify-content: space-between;
  font-size: var(--fs-xs);
  color: var(--ink-muted);
}

/* Reveal motion */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* Responsive shell */
@media (max-width: 960px) {
  .nav-toggle { display: inline-flex; }

  .nav,
  .header-actions .ghost-link,
  .header-actions .btn--ghost {
    display: none;
  }

  .site-header.is-open .nav {
    display: flex;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: var(--s-4) var(--gutter) var(--s-5);
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
  }

  .site-header.is-open .nav a {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .site-header.is-open .header-actions .ghost-link {
    display: inline-flex;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .header-actions .btn { padding-inline: 0.9rem; font-size: var(--fs-xs); }
}