:root {
  --navy: #09142a;
  --raised: #172645;
  --paper: #f5f7fc;
  --ink: #0d1729;
  --mute: #8aa0be;
  --ice: #73d6ff;
  --amber: #ffb838;
  --coral: #ff5c6b;
  --mint: #4de6ab;
  --violet: #b38fff;
  --spine: 92px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--navy);
  color: var(--paper);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  line-height: 1.5;
}

img { display: block; width: 100%; height: 100%; object-fit: cover; }

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

.spine {
  position: fixed;
  z-index: 4;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--spine);
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: center;
  padding: 22px 0 28px;
  background: #06101f;
  border-right: 1px solid rgba(115, 214, 255, 0.22);
}

.spine a {
  color: var(--paper);
  text-decoration: none;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 12px;
  font-weight: 700;
}

.spine-mark {
  writing-mode: horizontal-tb !important;
  transform: none !important;
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  background: var(--ice);
  color: var(--ink) !important;
  border-radius: 14px;
  letter-spacing: 0 !important;
}

main {
  margin-left: var(--spine);
  padding: 28px 28px 80px;
}

.window-hero {
  display: grid;
  grid-template-columns: minmax(220px, 0.8fr) minmax(280px, 1.2fr);
  gap: 28px;
  align-items: end;
  min-height: 72vh;
}

.kicker {
  margin: 0 0 8px;
  color: var(--amber);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(56px, 8vw, 108px);
  line-height: 0.88;
  letter-spacing: -0.04em;
}

.tagline {
  max-width: 28ch;
  font-size: 20px;
  color: var(--paper);
}

.shop-window {
  margin: 0;
  padding: 14px 14px 18px;
  background:
    linear-gradient(180deg, #d7e4f2 0%, #9aafc6 40%, #6d8298 100%);
  border-radius: 18px 18px 8px 8px;
  box-shadow: inset 0 0 0 8px #24344c, 0 24px 40px rgba(0, 0, 0, 0.35);
}

.shop-window img {
  aspect-ratio: 16 / 10;
  border-radius: 4px;
}

.shop-window figcaption,
.inspection figcaption,
.metal-band figcaption {
  margin-top: 10px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
}

.metal-band figcaption,
.inspection figcaption { color: var(--mute); }

.cork { margin-top: 72px; }

.intro { max-width: 38rem; }

.intro-right { margin-left: auto; text-align: right; }

.intro h2, .legal-pane h2 {
  margin: 0 0 8px;
  font-size: clamp(32px, 4vw, 52px);
  letter-spacing: -0.03em;
  line-height: 1;
}

.notes {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  align-items: start;
}

.note {
  position: relative;
  padding: 28px 16px 18px;
  color: var(--ink);
  border-radius: 3px 8px 6px 4px;
  box-shadow: 3px 8px 0 rgba(0, 0, 0, 0.28);
}

.note h3 { margin: 0 0 8px; font-size: 22px; }
.note p { margin: 0; font-size: 15px; }

.note-ice { background: #d7f4ff; transform: rotate(-2.5deg); }
.note-amber { background: #ffe3a8; transform: rotate(1.8deg); margin-top: 22px; }
.note-mint { background: #c8ffe8; transform: rotate(-1.2deg); }
.note-coral { background: #ffd0d4; transform: rotate(2.4deg); margin-top: 18px; }

.pin {
  position: absolute;
  top: 8px;
  left: 50%;
  width: 14px;
  height: 14px;
  margin-left: -7px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #fff, var(--coral) 45%, #8d2430);
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.35);
}

.metal-band {
  margin: 36px 0 0;
}

.metal-band img {
  aspect-ratio: 16 / 7;
  border-radius: 18px;
}

.pair { margin-top: 80px; }

.frames {
  margin-top: 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.inspection {
  margin: 0;
  padding: 12px;
  background: var(--raised);
  border-radius: 28px;
  border: 1px solid rgba(115, 214, 255, 0.25);
}

.inspection img {
  aspect-ratio: 9 / 16;
  border-radius: 18px;
}

.legal-switch {
  margin-top: 72px;
  display: flex;
  gap: 8px;
}

.tab {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--mute);
  font: inherit;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 10px 0;
  border-bottom: 3px solid transparent;
  cursor: pointer;
}

.tab.is-on {
  color: var(--paper);
  border-bottom-color: var(--mint);
}

.legal-pane {
  max-width: 42rem;
  padding-top: 18px;
}

.legal-pane p { font-size: 18px; }

.colophon {
  margin-top: 48px;
  color: var(--mute);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

@media (max-width: 900px) {
  .spine {
    top: auto;
    right: 0;
    width: auto;
    height: 64px;
    flex-direction: row;
    justify-content: space-around;
    padding: 0 8px;
    border-right: 0;
    border-top: 1px solid rgba(115, 214, 255, 0.22);
  }

  .spine a {
    writing-mode: horizontal-tb;
    transform: none;
    font-size: 11px;
  }

  .spine-mark { width: 40px; height: 40px; }

  main {
    margin-left: 0;
    padding: 20px 20px 96px;
  }

  .window-hero,
  .notes,
  .frames { grid-template-columns: 1fr; }

  .note, .note-amber, .note-coral { transform: none; margin-top: 0; }

  .intro-right { margin-left: 0; text-align: left; }
}