@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Manrope:wght@400;500;600;700&family=Newsreader:ital,opsz,wght@1,6..72,500&display=swap');

:root {
  --blue: #0e5368;
  --blue-dark: #08374a;
  --ink: #101522;
  --muted: #687083;
  --paper: #f5f6fa;
  --white: #fff;
  --line: #dfe2ea;
  --mono: "DM Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
  --sans: "Manrope", Arial, sans-serif;
  --serif: "Newsreader", Georgia, serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}
img { display: block; width: 100%; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 100; top: 1rem; left: 1rem; padding: .8rem 1rem; background: var(--ink); color: var(--white); transform: translateY(-150%); }
.skip-link:focus { transform: none; }

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem clamp(1.25rem, 4vw, 4.5rem);
  background: rgba(245, 246, 250, .88);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(16px);
  transition: border-color .25s, padding .25s;
}
.site-header.is-scrolled { border-color: var(--line); padding-block: .8rem; }
.brand { display: inline-flex; align-items: center; gap: .65rem; font-weight: 700; letter-spacing: -.03em; }
.brand-mark { display: grid; place-items: center; width: 2.25rem; height: 2.25rem; color: var(--white); background: var(--blue); border-radius: .3rem; font-family: var(--serif); font-size: 1.35rem; font-style: italic; }
.site-nav { display: flex; align-items: center; gap: clamp(1.1rem, 2.5vw, 2.5rem); font-size: .86rem; font-weight: 600; }
.site-nav > a:not(.nav-cta) { position: relative; }
.site-nav > a:not(.nav-cta)::after { content: ""; position: absolute; left: 0; bottom: -.35rem; width: 100%; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform .2s; }
.site-nav > a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav-cta { padding: .7rem 1rem; color: var(--white); background: var(--blue); border-radius: .25rem; }
.menu-toggle { display: none; padding: .35rem; border: 0; background: transparent; }
.menu-toggle span:not(.sr-only) { display: block; width: 1.4rem; height: 2px; margin: .25rem 0; background: var(--ink); }

.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(22rem, .9fr);
  padding: 7rem clamp(1.25rem, 4vw, 4.5rem) 3rem;
  overflow: hidden;
}
.hero-copy { align-self: center; max-width: 48rem; padding: 4rem 5vw 4rem 0; }
h1, h2 { margin: 0; font-weight: 500; letter-spacing: -.065em; line-height: .92; }
h1 { max-width: 750px; font-size: clamp(4.25rem, 9vw, 9rem); }
h1 em, h2 em { color: var(--blue); font-family: var(--serif); font-weight: 500; }
.hero-intro { max-width: 41rem; margin: 2rem 0 0; color: #444c5e; font-size: clamp(1rem, 1.5vw, 1.25rem); line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2.2rem; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 1.25rem; min-height: 3.5rem; padding: .85rem 1.15rem; border-radius: .25rem; font-size: .82rem; font-weight: 700; transition: transform .2s, box-shadow .2s, background .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: var(--white); background: var(--blue); box-shadow: 0 12px 32px rgba(14, 104, 99, .2); }
.button-primary:hover { background: var(--blue-dark); box-shadow: 0 16px 38px rgba(14, 104, 99, .28); }
.button-quiet { border: 1px solid var(--line); background: var(--white); }
.hero-facts { display: grid; grid-template-columns: repeat(3, 1fr); max-width: 36rem; margin: 3.5rem 0 0; padding-top: 1.5rem; border-top: 1px solid var(--line); }
.hero-facts div { padding-right: 1rem; }
.hero-facts dt { font-size: 1.55rem; font-weight: 600; letter-spacing: -.045em; }
.hero-facts dd { margin: .25rem 0 0; color: var(--muted); font-family: var(--mono); font-size: .61rem; text-transform: uppercase; letter-spacing: .08em; }
.hero-visual { position: relative; min-height: 42rem; overflow: hidden; background: var(--blue); }
.hero-visual::after { content: ""; position: absolute; inset: auto 0 0; height: 22%; background: linear-gradient(transparent, rgba(7, 20, 78, .35)); }
.hero-visual img { position: absolute; z-index: 2; top: 3%; left: 50%; width: 43%; height: auto; max-height: 96%; object-fit: contain; object-position: center top; transform: translateX(-50%); filter: drop-shadow(0 2rem 2.5rem rgba(0, 0, 0, .25)); }
.blueprint-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.13) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.13) 1px, transparent 1px); background-size: 10% 6%; }
.blueprint-grid::before, .blueprint-grid::after { content: ""; position: absolute; border: 1px solid rgba(255,255,255,.35); border-radius: 50%; }
.blueprint-grid::before { width: 80%; aspect-ratio: 1; left: -40%; top: 12%; }
.blueprint-grid::after { width: 50%; aspect-ratio: 1; right: -25%; bottom: 8%; }
.image-note { position: absolute; z-index: 3; margin: 0; color: rgba(255,255,255,.8); font-family: var(--mono); font-size: .62rem; line-height: 1.6; text-transform: uppercase; letter-spacing: .08em; }
.image-note-top { top: 1.5rem; left: 1.5rem; }
.image-note-bottom { right: 1.5rem; bottom: 1.5rem; text-align: right; }

.section { padding: clamp(5rem, 10vw, 9rem) clamp(1.25rem, 6vw, 7rem); }
.section-heading { margin-bottom: clamp(3rem, 6vw, 5.5rem); }
h2 { font-size: clamp(3rem, 6.4vw, 6.5rem); }
.story-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: clamp(2rem, 7vw, 8rem); align-items: start; }
.story-copy { padding-top: clamp(0rem, 4vw, 5rem); }
.story-copy p { max-width: 34rem; color: var(--muted); line-height: 1.8; }
.story-copy .lead { color: var(--ink); font-size: clamp(1.15rem, 1.7vw, 1.45rem); line-height: 1.55; }
.text-link { display: inline-flex; gap: 1.5rem; margin-top: 1.2rem; padding-bottom: .35rem; border-bottom: 1px solid var(--ink); font-size: .83rem; font-weight: 700; }
.feature-image { width: 50%; margin: 0 auto; }
.feature-image img { aspect-ratio: 4 / 5; object-fit: cover; object-position: center; }

.split-heading { display: grid; grid-template-columns: 1fr minmax(18rem, .42fr); gap: 3rem; align-items: end; }
.split-heading > p { margin: 0 0 .5rem; color: var(--muted); line-height: 1.75; }
.assembly { background: #edf2f0; }
.assembly-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; align-items: stretch; }
.assembly-printed { display: grid; grid-template-rows: auto 1fr; color: var(--white); background: var(--ink); }
.assembly-art { position: relative; padding: clamp(1.25rem, 2.5vw, 2.5rem); background: #1c2230; }
.assembly-art::after { content: "Printable components"; position: absolute; left: 1rem; bottom: .75rem; color: #838c9e; font-family: var(--mono); font-size: .55rem; text-transform: uppercase; letter-spacing: .08em; }
.assembly-art img { mix-blend-mode: screen; }
.assembly-copy { padding: clamp(1.5rem, 3vw, 2.75rem); }
.assembly-copy h3, .assembly-additional > h3 { margin: 0 0 1.25rem; font-size: 1.55rem; letter-spacing: -.04em; }
.assembly-copy > p { margin: 0 0 1.5rem; color: #aeb6c6; font-size: .82rem; line-height: 1.7; }
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); margin: 0; padding: 0; list-style: none; }
.feature-list li { display: flex; gap: .8rem; padding: .7rem 0; border-top: 1px solid #303746; font-size: .72rem; }
.feature-list li:nth-child(odd) { padding-right: 1rem; }
.feature-list span { color: #72b6af; font-family: var(--mono); font-size: .58rem; }
.assembly-additional { display: flex; flex-direction: column; padding: clamp(1.5rem, 3vw, 2.75rem); background: var(--white); }
.parts-list { margin: 0; padding: 0; list-style: none; }
.assembly-additional .parts-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 1.5rem; }
.parts-list li { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; padding: .58rem 0; border-top: 1px solid var(--line); color: #4e5667; font-size: .72rem; }
.parts-list b { min-width: 1.5rem; color: var(--ink); font-family: var(--mono); font-size: .7rem; text-align: right; }
.assembly-settings { margin: auto 0 1rem; padding-top: 1.5rem; }
.assembly-settings h4 { margin: 0 0 .8rem; font-size: .76rem; text-transform: uppercase; letter-spacing: .08em; }
.assembly-settings dl { display: grid; grid-template-columns: repeat(5, 1fr); margin: 0; border-block: 1px solid var(--line); }
.assembly-settings dl div { min-width: 0; padding: .65rem .55rem; border-left: 1px solid var(--line); }
.assembly-settings dl div:first-child { border-left: 0; }
.assembly-settings dt { color: var(--muted); font-size: .55rem; }
.assembly-settings dd { margin: .25rem 0 0; font-family: var(--mono); font-size: .65rem; font-weight: 500; }
.guide-card { display: grid; grid-template-columns: auto 1fr auto; gap: 1rem; align-items: center; padding: 1.15rem 1.25rem; color: var(--white); background: var(--blue); transition: background .2s, transform .2s; }
.guide-card:hover { background: var(--blue-dark); transform: translateY(-2px); }
.guide-icon { display: grid; place-items: center; width: 2.5rem; height: 2.5rem; border: 1px solid rgba(255,255,255,.4); border-radius: 50%; }
.guide-card small, .guide-card strong { display: block; }
.guide-card small { margin-bottom: .25rem; opacity: .7; font-family: var(--mono); font-size: .6rem; text-transform: uppercase; }
.guide-card strong { font-size: .86rem; }

.showcase { display: grid; grid-template-columns: 1.08fr .92fr; gap: 1.25rem; align-items: start; color: var(--white); background: var(--blue); overflow: hidden; }
.showcase-gallery { min-width: 0; }
.gallery-heading { display: flex; align-items: end; justify-content: space-between; gap: 2rem; margin-bottom: 2rem; }
.gallery-heading h2 { font-size: clamp(3rem, 5vw, 5rem); }
.gallery-controls { display: flex; align-items: center; gap: 1rem; }
.gallery-controls button { width: 3rem; height: 3rem; border: 1px solid rgba(255,255,255,.45); border-radius: 50%; color: var(--white); background: transparent; cursor: pointer; transition: color .2s, background .2s; }
.gallery-controls button:hover { color: var(--blue); background: var(--white); }
.gallery-controls p { min-width: 4rem; font-family: var(--mono); font-size: .68rem; text-align: center; }
.gallery-stage { position: relative; width: 60%; margin-inline: auto; aspect-ratio: 3 / 4; background: #d8d1c8; }
.gallery-item { position: absolute; inset: 0; margin: 0; opacity: 0; transform: translateX(3rem); pointer-events: none; transition: opacity .5s, transform .6s cubic-bezier(.2,.7,.2,1); }
.gallery-item.is-active { opacity: 1; transform: none; pointer-events: auto; }
.gallery-item img { height: 100%; object-fit: contain; object-position: center; background: #d8d1c8; }
.gallery-item figcaption { position: absolute; left: 1rem; bottom: 1rem; padding: .6rem .8rem; color: var(--ink); background: var(--white); font-family: var(--mono); font-size: .6rem; text-transform: uppercase; letter-spacing: .07em; }
.gallery-tabs { display: flex; width: 60%; gap: .5rem; margin: 1.25rem auto 0; }
.gallery-tabs button { flex: 1; height: 3px; padding: 0; border: 0; background: rgba(255,255,255,.3); cursor: pointer; }
.gallery-tabs button.is-active { background: var(--white); }

.showcase-remix { min-width: 0; padding: clamp(1.5rem, 3vw, 3rem); color: var(--ink); background: #edf2f0; }
.open-design-copy { padding-top: clamp(2rem, 4vw, 4rem); }
.open-design-copy h2 { font-size: clamp(3rem, 5vw, 5rem); }
.open-design-copy > p { max-width: 35rem; margin: 2rem 0; color: var(--muted); line-height: 1.75; }
.button-dark { color: var(--white); background: var(--ink); }
.remix-visual { position: relative; width: 60%; margin: 0 auto; background: #202124; }
.remix-visual::after { content: ""; position: absolute; inset: 0; pointer-events: none; box-shadow: inset 0 0 0 1px rgba(255,255,255,.12); }
.remix-visual img { width: 100%; height: auto; object-fit: contain; }
.remix-visual figcaption { display: flex; justify-content: space-between; gap: 2rem; padding: .9rem 1rem; color: #bdc3cf; background: var(--ink); font-family: var(--mono); font-size: .61rem; line-height: 1.55; text-transform: uppercase; letter-spacing: .06em; }
.remix-visual figcaption span { color: #72b6af; white-space: nowrap; }
.license-section { display: grid; grid-template-columns: .78fr 1.22fr; gap: clamp(4rem, 9vw, 9rem); background: #edf2f0; }
.license-intro { align-self: start; }
.license-intro h2 { font-size: clamp(3.2rem, 5.7vw, 5.7rem); }
.license-intro > p { max-width: 34rem; margin: 2rem 0; color: #596865; line-height: 1.8; }
.license-intro > p a { color: var(--ink); border-bottom: 1px solid #9aaba7; }
.license-marks { display: flex; flex-wrap: wrap; gap: 1.4rem; margin-top: 3rem; }
.license-mark { display: flex; align-items: center; gap: .65rem; }
.license-mark svg { width: 3.25rem; height: 3.25rem; fill: none; stroke: var(--blue); stroke-width: 3.4; stroke-linecap: round; stroke-linejoin: round; }
.license-mark small { color: #596865; font-family: var(--mono); font-size: .56rem; line-height: 1.45; text-transform: uppercase; letter-spacing: .05em; }
.license-details { min-width: 0; }
.license-permissions { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: #cddbd7; border: 1px solid #cddbd7; }
.license-permissions article { padding: clamp(1.5rem, 3vw, 2.5rem); background: var(--white); }
.license-permissions span { color: var(--blue); font-family: var(--mono); font-size: .62rem; }
.license-permissions h3 { margin: 1.6rem 0 .55rem; font-size: 1.5rem; letter-spacing: -.04em; }
.license-permissions p { margin: 0; color: var(--muted); font-size: .82rem; line-height: 1.7; }
.license-terms { margin-top: 1.25rem; padding: clamp(1.5rem, 3vw, 2.5rem); color: var(--white); background: var(--blue); }
.license-terms h3 { margin: 0 0 1.5rem; font-size: 1.4rem; letter-spacing: -.035em; }
.license-terms ul { margin: 0; padding: 0; list-style: none; }
.license-terms li { padding: .85rem 0; border-top: 1px solid rgba(255,255,255,.23); color: rgba(255,255,255,.8); font-size: .8rem; line-height: 1.7; }
.license-terms strong { color: var(--white); }
.license-note { margin: 1.5rem 0; color: #687672; font-size: .72rem; line-height: 1.7; }
.license-note a { color: var(--ink); border-bottom: 1px solid #9aaba7; }
.license-links { display: flex; flex-wrap: wrap; gap: .65rem 1.75rem; padding-top: 1.25rem; border-top: 1px solid #cddbd7; }
.license-links a { display: inline-flex; gap: .75rem; color: var(--ink); font-family: var(--mono); font-size: .62rem; text-transform: uppercase; letter-spacing: .05em; }
.license-links a:hover { color: var(--blue); }

.site-footer { display: grid; grid-template-columns: 1fr 1fr auto; gap: 3rem; align-items: end; padding: 3rem clamp(1.25rem, 6vw, 7rem); background: #090d16; color: #7f8899; font-size: .72rem; line-height: 1.6; }
.footer-brand { display: flex; align-items: center; gap: 1rem; color: var(--white); }
.footer-brand span { font-family: var(--serif); font-size: 2.5rem; font-style: italic; }
.footer-brand p { margin: 0; }
.license { max-width: 30rem; margin: 0; }
.license a, .footer-links a:hover { color: var(--white); }
.footer-links { display: grid; gap: .25rem; text-align: right; }

[data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1); }
[data-reveal].is-visible { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .site-header { padding-inline: 1.25rem; }
  .menu-toggle { display: block; position: relative; z-index: 2; }
  .site-nav { position: absolute; top: 100%; left: 0; width: 100%; display: none; align-items: stretch; gap: 0; padding: 1rem 1.25rem 1.5rem; background: var(--paper); border-bottom: 1px solid var(--line); }
  .site-nav.is-open { display: grid; }
  .site-nav a { padding: .9rem 0; border-bottom: 1px solid var(--line); }
  .site-nav .nav-cta { margin-top: .75rem; padding-inline: 1rem; border: 0; }
  .hero { grid-template-columns: 1fr; padding-inline: 1.25rem; padding-bottom: 1.25rem; }
  .hero-copy { padding: 3rem 0; }
  .hero-visual { min-height: 42rem; }
  .story-grid, .assembly-grid, .showcase, .license-section { grid-template-columns: 1fr; }
  .split-heading { grid-template-columns: 1fr; gap: 1.5rem; }
  .showcase-gallery { width: 100%; max-width: 34rem; margin-inline: auto; }
  .site-footer { grid-template-columns: 1fr 1fr; }
  .license { grid-column: 1 / -1; grid-row: 2; }
}

@media (max-width: 600px) {
  h1 { font-size: clamp(3.8rem, 20vw, 5.2rem); }
  h2 { font-size: clamp(2.8rem, 14vw, 4rem); }
  .hero { padding-top: 5.5rem; }
  .hero-copy { padding-top: 2rem; }
  .hero-facts { gap: .75rem; }
  .hero-facts dt { font-size: 1.2rem; }
  .hero-facts dd { font-size: .53rem; }
  .hero-visual { min-height: 34rem; }
  .hero-visual img { width: 53%; }
  .section { padding-inline: 1.25rem; }
  .gallery-heading { align-items: start; flex-direction: column; }
  .gallery-item img { object-position: center; }
  .gallery-controls { align-self: flex-end; }
  .assembly-additional .parts-list, .feature-list { grid-template-columns: 1fr; }
  .assembly-settings dl { grid-template-columns: repeat(2, 1fr); }
  .assembly-settings dl div { border-top: 1px solid var(--line); }
  .license-permissions { grid-template-columns: 1fr; }
  .license-marks { gap: 1rem; }
  .license-mark small { display: none; }
  .site-footer { grid-template-columns: 1fr; }
  .license { grid-column: auto; grid-row: auto; }
  .footer-links { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}