/* Apple-inspired design tokens — from DESIGN.md */
:root {
  --primary: #0066cc;
  --primary-focus: #0071e3;
  --primary-on-dark: #2997ff;
  --ink: #1d1d1f;
  --body: #1d1d1f;
  --body-on-dark: #ffffff;
  --body-muted: #cccccc;
  --ink-muted-80: #333333;
  --ink-muted-48: #7a7a7a;
  --divider-soft: #f0f0f0;
  --hairline: #e0e0e0;
  --canvas: #ffffff;
  --canvas-parchment: #f5f5f7;
  --surface-pearl: #fafafc;
  --surface-tile-1: #272729;
  --surface-tile-2: #2a2a2c;
  --surface-tile-3: #252527;
  --surface-black: #000000;
  --surface-chip: rgba(210, 210, 215, 0.64);
  --on-primary: #ffffff;
  --on-dark: #ffffff;
  --font-display: "SF Pro Display", "PingFang SC", "Helvetica Neue", system-ui, -apple-system, sans-serif;
  --font-text: "SF Pro Text", "PingFang SC", "Helvetica Neue", system-ui, -apple-system, sans-serif;
  --product-shadow: rgba(0, 0, 0, 0.22) 3px 5px 30px 0;
  --section-pad: 80px;
  --nav-height: 44px;
  --subnav-height: 52px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-text);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.47;
  letter-spacing: -0.374px;
  color: var(--body);
  background: var(--canvas);
}

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

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

button {
  font: inherit;
  border: none;
  cursor: pointer;
  background: none;
}

ul {
  list-style: none;
}

.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;
}

/* —— Navigation —— */
.global-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: var(--surface-black);
  color: var(--on-dark);
}

.global-nav__inner {
  max-width: 1440px;
  height: 100%;
  margin: 0 auto;
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.global-nav__logo {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.global-nav__links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.global-nav__links a {
  font-size: 12px;
  line-height: 1;
  letter-spacing: -0.12px;
  opacity: 0.92;
  transition: opacity 0.2s;
}

.global-nav__links a:hover {
  opacity: 1;
}

.global-nav__actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.global-nav__menu-btn {
  display: none;
  width: 44px;
  height: 44px;
  color: var(--on-dark);
}

.sub-nav {
  position: sticky;
  top: var(--nav-height);
  z-index: 99;
  height: var(--subnav-height);
  background: rgba(245, 245, 247, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.sub-nav__inner {
  max-width: 1440px;
  height: 100%;
  margin: 0 auto;
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sub-nav__title {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 600;
  line-height: 1.19;
  letter-spacing: 0.231px;
}

.sub-nav__links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.sub-nav__links a {
  font-size: 14px;
  line-height: 1.29;
  letter-spacing: -0.224px;
  color: var(--ink-muted-80);
}

.sub-nav__links a.is-active {
  color: var(--ink);
  font-weight: 600;
}

/* —— Buttons —— */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 22px;
  border-radius: 9999px;
  background: var(--primary);
  color: var(--on-primary);
  font-size: 17px;
  line-height: 1.47;
  letter-spacing: -0.374px;
  transition: transform 0.15s ease;
}

.btn-primary:focus-visible {
  outline: 2px solid var(--primary-focus);
  outline-offset: 2px;
}

.btn-primary:active {
  transform: scale(0.95);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 22px;
  border-radius: 9999px;
  border: 1px solid var(--primary);
  color: var(--primary);
  background: transparent;
  font-size: 17px;
  line-height: 1.47;
  letter-spacing: -0.374px;
  transition: transform 0.15s ease;
}

.btn-secondary:active {
  transform: scale(0.95);
}

.btn-store-hero {
  padding: 14px 28px;
  font-size: 18px;
  font-weight: 300;
  line-height: 1;
}

.text-link {
  color: var(--primary);
  font-size: 17px;
  line-height: 1.47;
  letter-spacing: -0.374px;
}

.text-link-on-dark {
  color: var(--primary-on-dark);
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-top: 20px;
}

/* —— Product tiles —— */
.tile {
  padding: var(--section-pad) 24px;
  text-align: center;
}

.tile__content {
  max-width: 980px;
  margin: 0 auto;
}

.tile__eyebrow {
  font-size: 21px;
  font-weight: 600;
  line-height: 1.19;
  letter-spacing: 0.231px;
  margin-bottom: 8px;
}

.tile__headline {
  font-family: var(--font-display);
  font-size: 56px;
  font-weight: 600;
  line-height: 1.07;
  letter-spacing: -0.28px;
  margin-bottom: 12px;
}

.tile__lead {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 400;
  line-height: 1.14;
  letter-spacing: 0.196px;
  max-width: 720px;
  margin: 0 auto 32px;
}

.tile__visual {
  margin-top: 40px;
  display: flex;
  justify-content: center;
}

.tile__visual img,
.tile__visual svg {
  filter: drop-shadow(var(--product-shadow));
}

.tile--canvas {
  background: var(--canvas);
  color: var(--ink);
}

.tile--parchment {
  background: var(--canvas-parchment);
  color: var(--ink);
}

.tile--dark {
  background: var(--surface-tile-1);
  color: var(--body-on-dark);
}

.tile--dark-2 {
  background: var(--surface-tile-2);
  color: var(--body-on-dark);
}

.tile--black {
  background: var(--surface-black);
  color: var(--body-on-dark);
  min-height: 88vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.tile--black .tile__lead {
  color: var(--body-muted);
  font-family: var(--font-text);
  font-size: 24px;
  font-weight: 300;
  line-height: 1.5;
  letter-spacing: 0;
}

/* —— Hero —— */
.hero {
  position: relative;
  overflow: hidden;
}

.hero__device {
  width: min(420px, 88vw);
  height: auto;
}

/* —— Feature split —— */
.feature-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.feature-split__item {
  padding: var(--section-pad) 48px;
  min-height: 520px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  text-align: center;
}

.feature-split__item h3 {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 600;
  line-height: 1.1;
  margin-bottom: 8px;
}

.feature-split__item p {
  font-size: 17px;
  line-height: 1.47;
  letter-spacing: -0.374px;
  max-width: 360px;
  margin-bottom: 24px;
}

.feature-split__item .tile__visual {
  margin-top: auto;
  padding-top: 32px;
}

/* —— Utility cards —— */
.section-header {
  max-width: 980px;
  margin: 0 auto;
  padding: 64px 24px 32px;
  text-align: center;
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 600;
  line-height: 1.1;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 17px;
  color: var(--ink-muted-80);
}

.utility-grid {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 80px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.utility-card {
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: 18px;
  padding: 24px;
  text-align: left;
  transition: transform 0.2s ease;
}

.utility-card:hover {
  transform: translateY(-2px);
}

.utility-card__image {
  aspect-ratio: 1;
  border-radius: 8px;
  background: var(--canvas-parchment);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  overflow: hidden;
}

.utility-card__image svg {
  width: 72%;
  height: auto;
  filter: none;
}

.utility-card h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.24;
  letter-spacing: -0.374px;
  margin-bottom: 4px;
}

.utility-card__price {
  font-size: 17px;
  margin-bottom: 12px;
}

/* —— Quote band —— */
.quote-band {
  background: var(--surface-tile-1);
  color: var(--on-dark);
  padding: var(--section-pad) 24px;
  text-align: center;
}

.quote-band__badge {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #30d158;
  margin-bottom: 16px;
}

.quote-band h2 {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 600;
  line-height: 1.1;
  max-width: 720px;
  margin: 0 auto 12px;
}

.quote-band p {
  font-size: 21px;
  line-height: 1.5;
  color: var(--body-muted);
  max-width: 640px;
  margin: 0 auto 28px;
}

/* —— Footer —— */
.footer {
  background: var(--canvas-parchment);
  color: var(--ink-muted-80);
  padding: 64px 24px 32px;
}

.footer__inner {
  max-width: 980px;
  margin: 0 auto;
}

.footer__note {
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: -0.12px;
  color: var(--ink-muted-48);
  padding-bottom: 24px;
  border-bottom: 1px solid var(--hairline);
  margin-bottom: 24px;
}

.footer__columns {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.footer__columns h4 {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.29;
  letter-spacing: -0.224px;
  color: var(--ink);
  margin-bottom: 8px;
}

.footer__columns ul {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.footer__columns a {
  font-size: 17px;
  line-height: 2.41;
  letter-spacing: 0;
  color: var(--ink-muted-80);
}

.footer__legal {
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: -0.12px;
  color: var(--ink-muted-48);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

/* —— Responsive —— */
@media (max-width: 1068px) {
  .tile__headline {
    font-size: 40px;
  }

  .utility-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 833px) {
  .global-nav__links {
    display: none;
  }

  .global-nav__menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .sub-nav__links {
    display: none;
  }

  .feature-split {
    grid-template-columns: 1fr;
  }

  .footer__columns {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  :root {
    --section-pad: 48px;
  }

  .tile__headline {
    font-size: 34px;
  }

  .tile__lead {
    font-size: 21px;
  }

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

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

@media (max-width: 419px) {
  .tile__headline {
    font-size: 28px;
  }
}