:root {
  --bg: #ffffff;
  --fg: #333333;
  --muted: #666666;
  --line: #333333;
  --font: Geist, system-ui, sans-serif;
  --content: 42rem;
  --font-size-body: 1rem;
  --font-size-heading: 1.5rem;
  --font-size-hero: clamp(1.75rem, 3.5vw, 2.25rem);
  --font-size-small: 0.8125rem;
  --radius-form: 0.375rem;
  --sticky-top: 4.5rem;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 18px;
  scroll-behavior: smooth;
}

html,
body {
  min-height: 100%;
}

body {
  font-family: var(--font);
  font-size: var(--font-size-body);
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  padding: 0 1rem 4rem;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

main {
  max-width: var(--content);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 4rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  max-width: none;
  width: auto;
  margin: 0 -1rem 1.5rem;
  padding: 0.85rem 1rem;
}

.site-header-frost {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.site-header-frost::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    color-mix(in srgb, var(--bg) 96%, transparent) 0%,
    color-mix(in srgb, var(--bg) 35%, transparent) 55%,
    transparent 100%
  );
}

.site-header-frost span {
  position: absolute;
  inset: 0;
}

.site-header-frost span:nth-child(1) {
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  mask-image: linear-gradient(to bottom, #000 0%, #000 6%, transparent 18%);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 6%, transparent 18%);
}

.site-header-frost span:nth-child(2) {
  backdrop-filter: blur(17.8px);
  -webkit-backdrop-filter: blur(17.8px);
  mask-image: linear-gradient(to bottom, transparent 0%, #000 8%, #000 18%, transparent 28%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 8%, #000 18%, transparent 28%);
}

.site-header-frost span:nth-child(3) {
  backdrop-filter: blur(15.6px);
  -webkit-backdrop-filter: blur(15.6px);
  mask-image: linear-gradient(to bottom, transparent 0%, #000 16%, #000 28%, transparent 38%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 16%, #000 28%, transparent 38%);
}

.site-header-frost span:nth-child(4) {
  backdrop-filter: blur(13.3px);
  -webkit-backdrop-filter: blur(13.3px);
  mask-image: linear-gradient(to bottom, transparent 0%, #000 26%, #000 38%, transparent 48%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 26%, #000 38%, transparent 48%);
}

.site-header-frost span:nth-child(5) {
  backdrop-filter: blur(11.1px);
  -webkit-backdrop-filter: blur(11.1px);
  mask-image: linear-gradient(to bottom, transparent 0%, #000 36%, #000 48%, transparent 58%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 36%, #000 48%, transparent 58%);
}

.site-header-frost span:nth-child(6) {
  backdrop-filter: blur(8.9px);
  -webkit-backdrop-filter: blur(8.9px);
  mask-image: linear-gradient(to bottom, transparent 0%, #000 46%, #000 58%, transparent 68%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 46%, #000 58%, transparent 68%);
}

.site-header-frost span:nth-child(7) {
  backdrop-filter: blur(6.7px);
  -webkit-backdrop-filter: blur(6.7px);
  mask-image: linear-gradient(to bottom, transparent 0%, #000 56%, #000 68%, transparent 78%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 56%, #000 68%, transparent 78%);
}

.site-header-frost span:nth-child(8) {
  backdrop-filter: blur(4.4px);
  -webkit-backdrop-filter: blur(4.4px);
  mask-image: linear-gradient(to bottom, transparent 0%, #000 66%, #000 78%, transparent 88%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 66%, #000 78%, transparent 88%);
}

.site-header-frost span:nth-child(9) {
  backdrop-filter: blur(2.2px);
  -webkit-backdrop-filter: blur(2.2px);
  mask-image: linear-gradient(to bottom, transparent 0%, #000 76%, #000 88%, transparent 98%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 76%, #000 88%, transparent 98%);
}

.site-header-frost span:nth-child(10) {
  backdrop-filter: blur(0.5px);
  -webkit-backdrop-filter: blur(0.5px);
  mask-image: linear-gradient(to bottom, transparent 0%, #000 86%, transparent 100%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, #000 86%, transparent 100%);
}

.site-header-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--content);
  margin: 0 auto;
}

.logo,
.icon-btn {
  position: relative;
}

.site-header-actions {
  display: flex;
  align-items: center;
}

.header-action-group {
  display: inline-flex;
  align-items: stretch;
}

.header-action-group .header-x-btn {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: auto;
  height: auto;
  padding: 0.4rem 1.75rem 0.4rem 0.7rem;
  border: 1px solid var(--fg);
  border-right: none;
  border-radius: 9999px 0 0 9999px;
  background: var(--bg);
  color: var(--fg);
  transition: opacity 0.2s ease;
}

.header-action-group .header-x-btn:hover {
  opacity: 0.5;
}

.header-action-group .header-x-btn svg {
  width: 1.2rem;
  height: 1.2rem;
}

.header-notify-btn {
  position: relative;
  z-index: 2;
  padding: 0.4rem 0.85rem 0.4rem 1.35rem;
  border: 1px solid var(--fg);
  border-radius: 9999px;
  margin-left: -1.25rem;
  background: var(--fg);
  color: var(--bg);
  font-family: Orbitron, sans-serif;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1;
  white-space: nowrap;
  transition: opacity 0.2s ease;
}

.header-notify-btn:hover {
  opacity: 0.85;
}

.logo {
  display: block;
  line-height: 0;
}

.logo img {
  height: 2.1rem;
  width: auto;
}

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  color: var(--fg);
  transition: opacity 0.2s ease;
}

.icon-btn:hover {
  opacity: 0.5;
}

.icon-btn svg {
  width: 1.2rem;
  height: 1.2rem;
}

.intro {
  text-align: center;
  padding-top: 3rem;
}

.intro h1 {
  font-size: var(--font-size-hero);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.02em;
  max-width: 28ch;
  margin: 0 auto;
}

.prose {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  text-align: justify;
}

.prose p {
  color: var(--muted);
  line-height: 1.65;
}

.product {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 1rem;
  width: 100%;
  scroll-margin-top: 4.5rem;
}

.product-heading {
  font-size: var(--font-size-heading);
  font-weight: 500;
}

.product-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  width: 100%;
  border: 1px solid var(--line);
}

.product-card-media {
  position: relative;
  min-height: 100%;
  overflow: hidden;
  padding: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.product-card-media img {
  width: 100%;
  height: auto;
  max-height: 360px;
  min-height: 0;
  display: block;
  object-fit: contain;
  object-position: center center;
}

.product-badge {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  padding: 0.1rem 0.4rem;
  border-right: 1px solid var(--fg);
  border-bottom: 1px solid var(--fg);
  background: var(--fg);
  color: var(--bg);
  font-family: 'JetBrains Mono', monospace;
  font-size: var(--font-size-small);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.product-card-body {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 0;
  border-left: 1px solid var(--line);
}

.product-panel {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-height: 100%;
}

.product-specs {
  display: flex;
  flex: 1;
  flex-direction: column;
}

.product-card-header {
  position: absolute;
  z-index: 2;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 2.5rem 0.85rem 0.85rem;
  background: linear-gradient(to top, var(--bg) 40%, transparent);
}

.product-card-header h3 {
  font-size: var(--font-size-heading);
  font-weight: 500;
  line-height: 1.2;
  color: var(--fg);
}

.mono-name {
  font-family: Orbitron, sans-serif;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.product-card-header p {
  margin-top: 0.35rem;
  color: var(--muted);
}

.product-spec {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.7rem 0.85rem;
  border-bottom: 1px solid var(--line);
}

.product-spec:last-child {
  border-bottom: none;
}

.product-spec-label {
  color: var(--muted);
}

.product-spec-value {
  text-align: right;
}

.waitlist-lead {
  margin-top: auto;
  padding: 3rem 0.85rem 0.7rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.waitlist-form-slot {
  padding: 0 0.85rem 0.85rem;
}

.waitlist-form {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  width: 100%;
}

.waitlist-form.is-floating {
  position: fixed;
  z-index: 50;
  margin: 0;
  box-sizing: border-box;
}

.waitlist-confirm {
  padding: 0 0.85rem;
  color: var(--muted);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, opacity 0.4s ease 0.1s, padding 0.4s ease;
}

.waitlist-confirm.is-visible {
  max-height: 3rem;
  opacity: 1;
  padding: 0.65rem 0.85rem 0.85rem;
}

.waitlist-input {
  flex: 1;
  min-width: 0;
  padding: 0.7rem 1rem;
  border: 1px solid var(--line);
  border-radius: 9999px;
  background: var(--bg);
  color: var(--fg);
  font: inherit;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
  transition: background 0.2s ease, backdrop-filter 0.2s ease;
}

.waitlist-form.is-floating .waitlist-input {
  background: color-mix(in srgb, var(--bg) 62%, transparent);
  backdrop-filter: blur(16px) saturate(1.15);
  -webkit-backdrop-filter: blur(16px) saturate(1.15);
}

.waitlist-input::placeholder {
  color: var(--muted);
}

.waitlist-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  min-width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 1px solid var(--fg);
  border-radius: 9999px;
  background: var(--fg);
  color: var(--bg);
  font: inherit;
  line-height: 1;
  cursor: default;
  overflow: hidden;
  flex-shrink: 0;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, opacity 0.2s ease,
    backdrop-filter 0.2s ease;
}

.waitlist-btn:disabled:not(.is-done) {
  opacity: 0.4;
  cursor: default;
}

.waitlist-form.is-floating .waitlist-btn {
  backdrop-filter: blur(16px) saturate(1.15);
  -webkit-backdrop-filter: blur(16px) saturate(1.15);
}

.waitlist-form.is-floating .waitlist-btn:disabled:not(.is-done) {
  background: color-mix(in srgb, var(--fg) 42%, transparent);
  border-color: color-mix(in srgb, var(--fg) 52%, transparent);
  color: color-mix(in srgb, var(--bg) 90%, transparent);
  opacity: 1;
}

.waitlist-form.is-floating .waitlist-btn:not(:disabled),
.waitlist-form.is-floating .waitlist-btn.is-done {
  background: color-mix(in srgb, var(--fg) 82%, transparent);
  border-color: color-mix(in srgb, var(--fg) 82%, transparent);
  opacity: 1;
}

.waitlist-btn:not(:disabled),
.waitlist-btn.is-done {
  opacity: 1;
  cursor: pointer;
}

.waitlist-btn:not(:disabled):hover {
  opacity: 0.85;
}

.waitlist-btn.is-done {
  cursor: default;
}

.waitlist-btn-label,
.waitlist-btn-check {
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.waitlist-btn-check {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: translateY(100%);
  opacity: 0;
}

.waitlist-btn.is-done .waitlist-btn-label {
  transform: translateY(-100%);
  opacity: 0;
}

.waitlist-btn.is-done .waitlist-btn-check {
  transform: translateY(0);
  opacity: 1;
}

@media (max-width: 768px) {
  body {
    padding: 0 1rem 3rem;
  }

  .site-header {
    margin-bottom: 1.25rem;
    padding: 0.6rem 1rem;
  }

  .logo img {
    height: 1.75rem;
  }

  .intro {
    padding-top: 2rem;
  }

  .intro h1 {
    max-width: none;
  }

  main {
    gap: 3rem;
  }

  .product-card {
    grid-template-columns: 1fr;
  }

  .product-card-body {
    border-left: none;
    border-top: 1px solid var(--line);
  }

  .product-panel {
    min-height: 0;
  }

  .product-card-media img {
    height: auto;
    min-height: 0;
    max-height: 270px;
    object-fit: contain;
    object-position: center center;
  }

  .product-card-header {
    position: absolute;
    bottom: 0;
    padding: 2rem 0.85rem 0.85rem;
    background: linear-gradient(to top, var(--bg) 55%, transparent);
  }
}