/* ============================================================
   HALYARD & CROFT KITE WORKS · Identity "Wind & Paper"
   Palette: reed paper white, ink navy, kite red, sky azure, sun ochre
   Type: Darker Grotesque (display, var wght 300-900) + Spline Sans (body, var 300-700)
   Motion: paper-lift hover, string-scroll kite rail, staggered flutter
   ============================================================ */

/* ---------- 1. TOKENS ---------- */
:root {
  --paper-0: oklch(0.975 0.012 95);
  --paper-1: oklch(0.945 0.02 95);
  --paper-2: oklch(0.905 0.03 92);
  --ink-0: oklch(0.27 0.05 252);
  --ink-1: oklch(0.38 0.055 252);
  --ink-2: oklch(0.52 0.045 250);
  --kite-0: oklch(0.585 0.205 28);
  --kite-1: oklch(0.52 0.2 28);
  --kite-2: oklch(0.66 0.19 30);
  --sky-0: oklch(0.74 0.115 225);
  --sky-1: oklch(0.6 0.115 230);
  --sky-2: oklch(0.42 0.1 235);
  --sun-0: oklch(0.8 0.135 88);
  --sun-1: oklch(0.72 0.14 80);
  --grass-0: oklch(0.7 0.11 145);
  --grass-1: oklch(0.55 0.1 150);
  --bg: var(--paper-0);
  --bg-alt: var(--paper-1);
  --bg-sunk: var(--paper-2);
  --ink: var(--ink-0);
  --ink-soft: var(--ink-1);
  --ink-faint: var(--ink-2);
  --kite: var(--kite-0);
  --kite-deep: var(--kite-1);
  --sky-deep: var(--sky-1);
  --sky-top: var(--sky-0);
  --sky-low: oklch(0.86 0.06 210);
  --sun: var(--sun-1);
  --downs: var(--grass-0);
  --dune: oklch(0.85 0.05 92);
  --line: oklch(0.82 0.03 95);
  --line-strong: oklch(0.68 0.04 100);
  --card-bg: oklch(0.985 0.008 95);
  --focus: var(--sky-2);
  --font-display: "Darker Grotesque", "Arial Narrow", sans-serif;
  --font-body: "Spline Sans", "Segoe UI", sans-serif;
  --step-0: clamp(0.98rem, 0.95rem + 0.2vw, 1.06rem);
  --step-1: clamp(1.15rem, 1.05rem + 0.4vw, 1.32rem);
  --step-2: clamp(1.42rem, 1.25rem + 0.7vw, 1.75rem);
  --step-3: clamp(1.85rem, 1.5rem + 1.6vw, 2.6rem);
  --step-4: clamp(2.4rem, 1.7rem + 3vw, 4.1rem);
  --step-5: clamp(3rem, 1.8rem + 5.2vw, 6rem);
  --s1: 0.35rem; --s2: 0.7rem; --s3: 1.1rem; --s4: 1.8rem; --s5: 2.8rem; --s6: 4.4rem; --s7: 7rem;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-inout: cubic-bezier(0.65, 0, 0.35, 1);
  --t-fast: 140ms; --t-med: 320ms; --t-slow: 720ms;
  --rail-bg: var(--line);
  --rail-kite: var(--kite);
  --wrap: 74rem;
  --radius: 14px;
}

[data-theme="dark"] {
  --bg: oklch(0.2 0.045 262);
  --bg-alt: oklch(0.24 0.05 262);
  --bg-sunk: oklch(0.16 0.04 260);
  --ink: oklch(0.93 0.02 95);
  --ink-soft: oklch(0.8 0.03 95);
  --ink-faint: oklch(0.64 0.04 95);
  --kite: oklch(0.66 0.2 30);
  --kite-deep: oklch(0.58 0.2 28);
  --sky-deep: oklch(0.7 0.1 225);
  --sky-top: oklch(0.32 0.07 250);
  --sky-low: oklch(0.22 0.05 258);
  --sun: oklch(0.8 0.13 88);
  --downs: oklch(0.34 0.06 150);
  --dune: oklch(0.3 0.04 92);
  --line: oklch(0.38 0.04 260);
  --line-strong: oklch(0.5 0.05 260);
  --card-bg: oklch(0.26 0.05 260);
  --focus: oklch(0.8 0.12 225);
  --rail-bg: var(--line);
  color-scheme: dark;
}

/* ---------- 2. RESET & BASE ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-weight: 380;
  font-size: var(--step-0);
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  transition: background var(--t-med) var(--ease-inout), color var(--t-med) var(--ease-inout);
}
img, svg { max-width: 100%; display: block; }
a { color: var(--sky-deep); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--kite); }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 560; line-height: 1.04; letter-spacing: 0.005em; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 3px; }
.skip {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--ink); color: var(--bg); padding: 0.6em 1em; border-radius: 0 0 8px 0;
}
.skip:focus { left: 0; }
::selection { background: var(--sun); color: var(--ink); }
.wrap { width: min(100% - 2.4rem, var(--wrap)); margin-inline: auto; }
@media (min-width: 40em) { .wrap { width: min(100% - 4rem, var(--wrap)); } }

/* ---------- 3. HEADER / NAV ---------- */
.site-head {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.head-row { display: flex; align-items: center; gap: var(--s3); padding-block: var(--s2); }
.brand { display: flex; align-items: center; gap: 0.7rem; text-decoration: none; color: var(--ink); }
.brand-mark { transition: transform var(--t-med) var(--ease-out); }
.brand:hover .brand-mark { transform: rotate(14deg) translateY(-2px); }
.brand-word { font-family: var(--font-display); font-size: var(--step-2); font-weight: 620; line-height: 1; letter-spacing: 0.01em; display: grid; }
.brand-word small { font-family: var(--font-body); font-weight: 420; font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-faint); }
.site-nav { margin-left: auto; }
.site-nav ul { display: flex; gap: var(--s3); list-style: none; padding: 0; }
.site-nav a:not(.btn) {
  color: var(--ink-soft); text-decoration: none; font-weight: 460;
  padding-block: 0.3em; position: relative;
}
.site-nav a:not(.btn)::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0;
  height: 2px; background: var(--kite);
  transition: right var(--t-med) var(--ease-out);
}
.site-nav a:not(.btn):hover::after, .site-nav a:not(.btn):focus-visible::after { right: 0; }
.site-nav a[aria-current="page"] { color: var(--ink); }
.site-nav a[aria-current="page"]::after { right: 0; background: var(--sun); }
.nav-toggle { display: none; }
.theme-toggle {
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: transparent; border: 1px solid var(--line-strong); color: var(--ink-soft);
  border-radius: 999px; padding: 0.35em 0.8em; cursor: pointer;
  font: inherit; font-size: 0.8rem; font-weight: 460;
  transition: border-color var(--t-fast), color var(--t-fast), transform var(--t-fast) var(--ease-out);
}
.theme-toggle:hover { border-color: var(--kite); color: var(--ink); transform: translateY(-1px); }
.tt-sun { opacity: 1; transition: opacity var(--t-med); }
[data-theme="dark"] .tt-sun { opacity: 0.25; }

/* ---------- 4. STRING RAIL ---------- */
.string-rail {
  position: fixed; top: 0; right: 0; width: 3px; height: 100vh; z-index: 90;
  background: var(--rail-bg);
}
.string-rail::before {
  content: ""; position: absolute; top: 0; right: 1px; width: 1px; height: calc(var(--p, 0) * 100%);
  background: var(--ink-faint);
}
.string-kite {
  position: absolute; top: calc(var(--p, 0) * 100%); right: -7px;
  translate: 0 -50%;
  color: var(--rail-kite);
  filter: drop-shadow(0 1px 2px color-mix(in oklab, var(--ink) 30%, transparent));
  transition: translate 90ms linear;
  rotate: 12deg;
}
.string-rail.up .string-kite { rotate: -12deg; }
@media (max-width: 48em) { .string-rail { display: none; } }

/* ---------- 5. HERO ---------- */
.hero { position: relative; margin-top: calc(-1 * var(--s2)); }
.hero-sky { position: absolute; inset: 0; overflow: hidden; z-index: -1; }
.hero-sky svg { width: 100%; height: 100%; }
#skyg stop:first-child { stop-color: var(--sky-top); }
#skyg stop:last-child { stop-color: var(--sky-low); }
.hero-inner { position: relative; padding: var(--s7) 0 var(--s6); max-width: 46rem; }
.kicker {
  font-weight: 520; letter-spacing: 0.18em; text-transform: uppercase;
  font-size: 0.76rem; color: var(--kite-deep); margin-bottom: var(--s2);
}
.kicker::before { content: ""; display: inline-block; width: 2.2em; height: 2px; background: var(--kite); vertical-align: middle; margin-right: 0.8em; }
.hero-title {
  font-size: var(--step-5); font-weight: 640;
  color: var(--ink);
  text-wrap: balance;
  margin-bottom: var(--s3);
}
.hero .lede { font-size: var(--step-1); color: var(--ink-soft); max-width: 34rem; margin-bottom: var(--s4); }
.hero-cta { display: flex; gap: var(--s2); flex-wrap: wrap; }
.cloud { animation: drift 46s var(--ease-inout) infinite alternate; }
.cloud.c2 { animation-duration: 61s; animation-delay: -20s; }
.cloud.c3 { animation-duration: 37s; animation-delay: -8s; }
@keyframes drift { from { transform: translateX(-40px); } to { transform: translateX(60px); } }
.kite-fly { transform-origin: center; animation: sway 7s var(--ease-inout) infinite alternate; }
.kite-fly.k2 { animation-duration: 9s; animation-delay: -3s; }
.kite-fly.k3 { animation-duration: 5.5s; animation-delay: -1.4s; }
@keyframes sway {
  0% { transform: rotate(-4deg) translateY(0); }
  100% { transform: rotate(5deg) translateY(14px); }
}

/* ---------- 6. BUTTONS ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5em;
  font-family: var(--font-body); font-weight: 520; font-size: 0.94rem;
  padding: 0.7em 1.35em; border-radius: 999px; text-decoration: none;
  border: 2px solid transparent; cursor: pointer;
  transition: transform var(--t-fast) var(--ease-out), background var(--t-fast), color var(--t-fast), box-shadow var(--t-fast);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-kite { background: var(--kite); color: var(--paper-0); box-shadow: 0 6px 18px color-mix(in oklab, var(--kite) 35%, transparent); }
.btn-kite:hover { background: var(--kite-deep); }
.btn-ghost { border-color: var(--line-strong); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--kite); color: var(--kite-deep); }
.btn-paper { background: var(--paper-0); color: var(--ink-0); }
.btn-paper:hover { background: var(--sun); }

/* ---------- 7. BANDS & GRIDS ---------- */
.band { padding-block: var(--s6); border-top: 1px solid var(--line); }
.band:first-of-type { border-top: 0; }
.band-title { font-size: var(--step-3); font-weight: 620; margin-bottom: var(--s2); }
.band-intro { color: var(--ink-soft); max-width: 44rem; margin-bottom: var(--s4); font-size: var(--step-1); }
.band-more { margin-top: var(--s4); display: flex; gap: var(--s2); flex-wrap: wrap; }
.grid-2 { display: grid; gap: var(--s3); grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr)); }
.grid-3 { display: grid; gap: var(--s3); grid-template-columns: repeat(auto-fill, minmax(17.5rem, 1fr)); }
.stat-band { padding-block: var(--s4); }
.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); gap: var(--s3); }
.stat { text-align: center; padding: var(--s3); border: 1px solid var(--line); border-radius: var(--radius); background: var(--card-bg); }
.stat-n { font-family: var(--font-display); font-size: var(--step-4); font-weight: 660; color: var(--kite); display: block; line-height: 1; }
.stat-l { font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); }

/* ---------- 8. CARDS ---------- */
.card {
  background: var(--card-bg); border: 1px solid var(--line); border-radius: var(--radius);
  padding: var(--s4) var(--s3) var(--s3); text-decoration: none; color: var(--ink);
  display: flex; flex-direction: column; gap: 0.45rem; position: relative; overflow: hidden;
  transition: transform var(--t-med) var(--ease-out), box-shadow var(--t-med) var(--ease-out), border-color var(--t-med);
}
a.card:hover, a.card:focus-visible {
  transform: translateY(-5px) rotate(-0.4deg);
  box-shadow: 0 14px 30px color-mix(in oklab, var(--ink) 14%, transparent);
  border-color: var(--kite);
}
a.card:hover .kite-glyph { transform: rotate(8deg) translateY(-4px); }
.card-glyph { margin-bottom: var(--s2); }
.kite-glyph { transition: transform var(--t-med) var(--ease-out); transform-origin: 50% 10%; }
.card-title { font-size: var(--step-2); font-weight: 600; }
.card-sub { font-size: 0.84rem; font-weight: 500; letter-spacing: 0.05em; text-transform: uppercase; color: var(--kite-deep); }
.card-body { color: var(--ink-soft); font-size: 0.95rem; }
.card-tags { font-size: 0.8rem; color: var(--ink-faint); margin-top: auto; padding-top: var(--s2); border-top: 1px dashed var(--line); }

/* ---------- 9. DETAIL / SPECS ---------- */
.detail-grid { display: grid; gap: var(--s5); grid-template-columns: minmax(14rem, 2fr) 3fr; align-items: start; padding-block: var(--s5); }
@media (max-width: 56em) { .detail-grid { grid-template-columns: 1fr; } }
.detail-stage {
  display: grid; place-items: center; min-height: 16rem;
  background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--radius);
  position: sticky; top: 5.5rem;
}
.detail-copy { max-width: 40rem; display: grid; gap: var(--s3); }
.detail-copy h2 { font-size: var(--step-3); margin-top: var(--s2); }
.spec-list { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.spec-row { display: flex; justify-content: space-between; gap: var(--s3); padding: 0.7em 1em; background: var(--card-bg); }
.spec-k { font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); font-weight: 520; }
.spec-v { font-weight: 500; text-align: right; }

/* ---------- 10. TIMELINE ---------- */
.timeline { display: grid; gap: var(--s3); position: relative; padding-left: 7.5rem; max-width: 52rem; }
.timeline::before { content: ""; position: absolute; left: 6rem; top: 0.5rem; bottom: 0.5rem; width: 2px; background: var(--line-strong); }
.tl-item { position: relative; }
.tl-item::before {
  content: ""; position: absolute; left: calc(-1.5rem - 7px); top: 0.5rem;
  width: 12px; height: 12px; rotate: 45deg; background: var(--kite); border: 2px solid var(--bg);
}
.tl-year {
  position: absolute; left: -7.5rem; top: 0; width: 5.4rem; text-align: right;
  font-family: var(--font-display); font-size: var(--step-2); font-weight: 640; color: var(--sky-deep);
}
@media (max-width: 40em) {
  .timeline { padding-left: 0; }
  .timeline::before { display: none; }
  .tl-item { border-left: 2px solid var(--line-strong); padding-left: var(--s3); }
  .tl-item::before { left: -8px; }
  .tl-year { position: static; display: block; width: auto; text-align: left; }
}

/* ---------- 11. PROSE / FAQ / FORMS ---------- */
.prose { max-width: 44rem; display: grid; gap: var(--s3); padding-block: var(--s4); }
.prose h2 { font-size: var(--step-3); margin-top: var(--s2); }
.steps { padding-left: 1.2rem; display: grid; gap: var(--s2); }
.ticklist { list-style: none; padding: 0; display: grid; gap: 0.55rem; }
.ticklist li::before { content: "✓"; color: var(--kite); font-weight: 700; margin-right: 0.6em; }
.faq-list { max-width: 46rem; display: grid; gap: var(--s2); padding-block: var(--s4); }
.faq { border: 1px solid var(--line); border-radius: 10px; background: var(--card-bg); padding: 0.2em 0; }
.faq summary {
  cursor: pointer; font-weight: 560; padding: 0.75em 1em; list-style: none; position: relative; padding-right: 2.6em;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 0.9em; top: 50%; translate: 0 -50%;
  color: var(--kite); font-weight: 700; font-size: 1.2em; transition: rotate var(--t-med) var(--ease-out);
}
.faq[open] summary::after { rotate: 45deg; }
.faq p { padding: 0 1em 0.9em; color: var(--ink-soft); }
.demo-form { display: grid; gap: var(--s3); max-width: 32rem; padding-block: var(--s2); }
.demo-form label { display: grid; gap: 0.35rem; font-weight: 520; font-size: 0.92rem; }
.demo-form input, .demo-form select, .demo-form textarea {
  font: inherit; color: var(--ink); background: var(--card-bg);
  border: 1px solid var(--line-strong); border-radius: 8px; padding: 0.6em 0.8em;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.demo-form input:focus, .demo-form select:focus, .demo-form textarea:focus {
  border-color: var(--kite); box-shadow: 0 0 0 3px color-mix(in oklab, var(--kite) 25%, transparent); outline: none;
}
.demo-form button { justify-self: start; }
.fineprint { font-size: 0.8rem; color: var(--ink-faint); }
.wx-table { max-width: 42rem; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-block: var(--s4); }
.wx-row { display: grid; grid-template-columns: 4.5rem 4rem 5.5rem 1fr; gap: var(--s2); padding: 0.7em 1.1em; background: var(--card-bg); border-top: 1px solid var(--line); align-items: baseline; }
.wx-row:first-child { border-top: 0; }
.wx-head { background: var(--bg-sunk); font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-faint); font-weight: 520; }
.wx-day { font-weight: 620; font-family: var(--font-display); font-size: var(--step-1); }
.wx-dir, .wx-spd { color: var(--ink-soft); }
.wx-v { color: var(--kite-deep); font-weight: 500; }
@media (max-width: 30em) { .wx-row { grid-template-columns: 3.4rem 1fr; } .wx-dir, .wx-spd { display: none; } }

/* ---------- 12. FOOTER ---------- */
.site-foot { background: var(--bg-sunk); border-top: 1px solid var(--line); margin-top: var(--s6); }
.foot-grid { display: grid; gap: var(--s4); grid-template-columns: 2fr repeat(4, 1fr); padding-block: var(--s5); }
@media (max-width: 64em) { .foot-grid { grid-template-columns: 1fr 1fr 1fr; } }
@media (max-width: 40em) { .foot-grid { grid-template-columns: 1fr 1fr; } }
.foot-brand p { color: var(--ink-soft); max-width: 22rem; margin-top: var(--s2); font-size: 0.92rem; }
.foot-tag { font-style: italic; }
.foot-note { font-size: 0.78rem !important; color: var(--ink-faint) !important; }
.foot-col h3 { font-size: 0.82rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-faint); font-weight: 560; margin-bottom: var(--s2); }
.foot-col ul { list-style: none; padding: 0; display: grid; gap: 0.45rem; }
.foot-col a { color: var(--ink-soft); text-decoration: none; font-size: 0.92rem; }
.foot-col a:hover { color: var(--kite); text-decoration: underline; }
.foot-base { border-top: 1px solid var(--line); padding-block: var(--s3); color: var(--ink-faint); font-size: 0.85rem; }
.foot-base p { display: flex; flex-wrap: wrap; gap: 0.35rem; }

/* ---------- 13. POST / SITEMAP / 404 ---------- */
.post { max-width: 42rem; padding-block: var(--s5); display: grid; gap: var(--s3); }
.post-title { font-size: var(--step-4); font-weight: 640; text-wrap: balance; }
.post-excerpt { font-size: var(--step-1); color: var(--ink-soft); border-left: 3px solid var(--sun); padding-left: var(--s3); }
.post p:not(.kicker):not(.post-excerpt):not(.band-more) { color: var(--ink-soft); }
.sitemap-list { list-style: none; padding: 0; columns: 2; column-gap: var(--s5); max-width: 44rem; }
@media (max-width: 40em) { .sitemap-list { columns: 1; } }
.sitemap-list li { break-inside: avoid; padding-block: 0.3rem; border-bottom: 1px dashed var(--line); }
.sitemap-list a { text-decoration: none; font-weight: 470; }
.sitemap-list a:hover { color: var(--kite); text-decoration: underline; }
.err-hero { min-height: 70vh; display: grid; }
.err-hero .hero-inner { margin-inline: auto; text-align: center; max-width: 36rem; padding-block: var(--s6); }
.err-hero .hero-cta, .err-hero .band-more { justify-content: center; }
.err-hero .kite-glyph { margin-inline: auto; margin-bottom: var(--s3); animation: sway 6s var(--ease-inout) infinite alternate; }
main > .hero:first-child { margin-top: 0; }

/* ---------- 14. SCROLL REVEAL & STAGGER ---------- */
.rise { opacity: 0; translate: 0 22px; }
.rise.in { opacity: 1; translate: 0 0; transition: opacity var(--t-slow) var(--ease-out), translate var(--t-slow) var(--ease-out); }
.stagger > * { opacity: 0; translate: 0 18px; }
.stagger > .in { opacity: 1; translate: 0 0; transition: opacity var(--t-slow) var(--ease-out), translate var(--t-slow) var(--ease-out); }
.stagger > .in:nth-child(2) { transition-delay: 90ms; }
.stagger > .in:nth-child(3) { transition-delay: 180ms; }
.stagger > .in:nth-child(4) { transition-delay: 270ms; }
.stagger > .in:nth-child(5) { transition-delay: 360ms; }
.stagger > .in:nth-child(6) { transition-delay: 450ms; }
.grid-3 > .rise.in:nth-child(2), .grid-2 > .rise.in:nth-child(2) { transition-delay: 90ms; }
.grid-3 > .rise.in:nth-child(3), .grid-2 > .rise.in:nth-child(3) { transition-delay: 180ms; }
.grid-3 > .rise.in:nth-child(4) { transition-delay: 270ms; }
.grid-3 > .rise.in:nth-child(5) { transition-delay: 360ms; }
.grid-3 > .rise.in:nth-child(6) { transition-delay: 450ms; }
body.leaving main { opacity: 0.6; translate: 0 -6px; transition: opacity 180ms ease, translate 180ms ease; }

/* ---------- 15. STATES ---------- */
.btn.loading { pointer-events: none; opacity: 0.7; }
.demo-form:invalid .btn-kite { opacity: 0.85; }
.demo-form input:user-invalid, .demo-form textarea:user-invalid { border-color: var(--kite-deep); }
.faq[open] { border-color: var(--line-strong); }
a.card:focus-visible { outline-offset: -3px; }
@media (prefers-contrast: more) {
  :root { --line: oklch(0.6 0.04 95); --line-strong: oklch(0.45 0.05 100); --ink-soft: var(--ink-0); --ink-faint: var(--ink-1); }
}

/* ---------- 16. REDUCED MOTION ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .rise, .stagger > * { opacity: 1; translate: 0 0; }
  .string-kite { transition: none; }
  body.leaving main { opacity: 1; translate: none; }
}

/* ---------- 17. PRINT ---------- */
@media print {
  .site-head, .site-foot, .string-rail, .hero-sky, .btn, .theme-toggle, .demo-form { display: none !important; }
  body { background: white; color: black; }
  .band { border-top: 0.5pt solid #999; }
  .hero-inner { padding: 2rem 0; }
  a { color: black; text-decoration: underline; }
}

/* ---------- 18. RESPONSIVE ---------- */
@media (max-width: 64em) {
  .site-nav {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: var(--s3) var(--s4) var(--s4);
    display: none; box-shadow: 0 18px 30px color-mix(in oklab, var(--ink) 18%, transparent);
  }
  .site-nav.open { display: block; }
  .site-nav ul { flex-direction: column; gap: var(--s2); margin-bottom: var(--s3); }
  .nav-toggle {
    display: inline-flex; align-items: center; gap: 0.5em; margin-left: auto;
    background: transparent; border: 1px solid var(--line-strong); border-radius: 999px;
    padding: 0.4em 0.9em; color: var(--ink); font: inherit; font-weight: 520; cursor: pointer;
  }
  .theme-toggle { order: 3; margin-left: 0; }
  .head-row { flex-wrap: wrap; }
  .nav-toggle-line { width: 1.1em; height: 2px; background: currentColor; display: inline-block; box-shadow: 0 4px 0 currentColor, 0 -4px 0 currentColor; }
  .hero-inner { padding-block: var(--s5); }
}
@media (max-width: 30em) {
  .brand-word small { display: none; }
  .hero-cta .btn { width: 100%; justify-content: center; }
}

/* ---------- 19. APPENDIX: theme transition polish ---------- */
.site-head, .card, .stat, .spec-row, .faq, .wx-row, .detail-stage { transition: background var(--t-med) var(--ease-inout), border-color var(--t-med) var(--ease-inout), color var(--t-med) var(--ease-inout); }
[data-theme="dark"] .hero-title { color: var(--ink); text-shadow: 0 2px 18px oklch(0.1 0.03 260 / 0.5); }
[data-theme="dark"] .kicker { color: var(--sun); }
[data-theme="dark"] .kicker::before { background: var(--sun); }
[data-theme="dark"] .tl-item::before { border-color: var(--bg); }
[data-theme="dark"] .card-body, [data-theme="dark"] .post p { color: var(--ink-soft); }

/* ---------- 20. APPENDIX: focus ring token + selection in dark ---------- */
[data-theme="dark"] ::selection { background: var(--sun); color: oklch(0.2 0.05 260); }

/* ---------- 21. APPENDIX: utility ---------- */
.text-center { text-align: center; }
.mt-auto { margin-top: auto; }
.hidden { display: none; }

/* ---------- 22. FONTS (self-hosted, variable, SIL OFL) ---------- */
@font-face {
  font-family: "Darker Grotesque";
  src: url("/assets/fonts/darker-grotesque-var.woff2") format("woff2-variations");
  font-weight: 300 900;
  font-display: swap;
  font-stretch: 100%;
}
@font-face {
  font-family: "Spline Sans";
  src: url("/assets/fonts/spline-sans-var.woff2") format("woff2-variations");
  font-weight: 300 700;
  font-display: swap;

}