:root {
  color-scheme: light;
  --canvas: #f4f5fa;
  --surface: #ffffff;
  --ink: #15171d;
  --muted: #656a75;
  --line: #dfe1e8;
  --brand: #1689f8;
  --brand-deep: #006bd6;
  --night: #15171d;
  --green: #29d454;
  --orange: #ff9f0a;
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 32px;
  --shadow: 0 24px 70px rgb(25 30 42 / 14%);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --section-space: 120px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

body[data-density="compact"] { --section-space: 80px; }
body[data-density="spacious"] { --section-space: 160px; }

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

button,
select {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  letter-spacing: -0.04em;
  line-height: 1.02;
  text-wrap: balance;
}

h1 {
  max-width: 780px;
  margin-bottom: 24px;
  font-size: clamp(3.5rem, 6.5vw, 5rem);
  font-weight: 760;
}

h2 {
  max-width: 820px;
  margin-bottom: 32px;
  font-size: clamp(2.5rem, 4.5vw, 3.5rem);
  font-weight: 740;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.25rem;
}

.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: 1000;
  top: 8px;
  left: 8px;
  padding: 12px 16px;
  border-radius: 10px;
  background: var(--night);
  color: white;
  transform: translateY(-140%);
}

.skip-link:focus { transform: translateY(0); }

.section-shell {
  width: min(1240px, calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  display: flex;
  width: min(1240px, calc(100% - 48px));
  min-height: 76px;
  margin-inline: auto;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid transparent;
  background: rgb(244 245 250 / 82%);
  backdrop-filter: blur(18px);
  transition: border-color 180ms ease;
}

.site-header.is-scrolled { border-bottom-color: rgb(21 23 29 / 10%); }

.brand {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 12px;
  font-size: 1.1rem;
  font-weight: 720;
  text-decoration: none;
}

.brand img,
.footer-brand img {
  border-radius: 10px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  display: inline-flex;
  min-height: 44px;
  padding: 0 14px;
  align-items: center;
  border-radius: 12px;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 590;
  text-decoration: none;
  transition: background 180ms ease, color 180ms ease;
}

.site-nav a:hover { background: white; color: var(--ink); }
.site-nav .nav-cta { background: var(--night); color: white; }
.site-nav .nav-cta:hover { background: #2a2d34; color: white; }

.language-switch {
  display: inline-flex;
  min-height: 44px;
  padding: 3px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgb(255 255 255 / 58%);
  gap: 2px;
}

.language-switch button {
  min-width: 42px;
  min-height: 36px;
  padding: 0 9px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 680;
}

.language-switch button[aria-pressed="true"] {
  background: var(--surface);
  box-shadow: 0 3px 12px rgb(31 35 46 / 10%);
  color: var(--ink);
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  padding: 11px;
  border: 0;
  background: transparent;
}

.menu-button > span:not(.sr-only) {
  display: block;
  height: 2px;
  margin: 5px 0;
  border-radius: 2px;
  background: var(--ink);
}

.hero {
  display: grid;
  min-height: 780px;
  padding-block: 72px var(--section-space);
  align-items: center;
  grid-template-columns: minmax(0, 1.08fr) minmax(380px, 0.92fr);
  gap: 72px;
}

.eyebrow {
  margin-bottom: 20px;
  color: var(--brand-deep);
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.eyebrow-light { color: #75baff; }

.hero-summary {
  max-width: 650px;
  margin-bottom: 32px;
  color: var(--muted);
  font-size: clamp(1.12rem, 2vw, 1.28rem);
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 50px;
  padding: 0 20px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 14px;
  font-weight: 680;
  text-decoration: none;
  transition: transform 180ms var(--ease), box-shadow 180ms ease, background 180ms ease;
}

.button:hover { transform: translateY(-2px); }
.button:focus-visible, .site-nav a:focus-visible, button:focus-visible, select:focus-visible {
  outline: 3px solid rgb(22 137 248 / 34%);
  outline-offset: 3px;
}

.button-primary {
  background: var(--brand);
  box-shadow: 0 12px 28px rgb(22 137 248 / 24%);
  color: white;
}

.button-primary:hover { background: var(--brand-deep); }
.button-quiet { border-color: var(--line); background: white; }
.button-inverse { background: white; color: var(--ink); }

.assurance-list {
  display: flex;
  padding: 0;
  margin: 0;
  flex-wrap: wrap;
  gap: 8px 20px;
  color: var(--muted);
  font-size: 0.83rem;
  list-style: none;
}

.assurance-list li::before {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--green);
  content: "";
}

.hero-product {
  position: relative;
  min-height: 590px;
}

.phone {
  position: relative;
  z-index: 2;
  padding: 10px;
  overflow: hidden;
  border: 1px solid rgb(255 255 255 / 22%);
  border-radius: 46px;
  background: #090a0d;
  box-shadow: var(--shadow);
}

.phone::before {
  position: absolute;
  z-index: 3;
  top: 17px;
  left: 50%;
  width: 34%;
  height: 22px;
  border-radius: 20px;
  background: #050506;
  content: "";
  transform: translateX(-50%);
}

.phone-screen {
  height: 100%;
  overflow: hidden;
  border-radius: 37px;
  background: #f5f5f8;
}

.phone-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  opacity: 1;
  transition: opacity 180ms ease;
}

.phone-screen img.is-changing { opacity: 0.35; }

.phone-hero {
  width: 310px;
  height: 618px;
  margin-inline: auto 8%;
  transform: rotate(2deg);
}

.evidence-tag {
  position: absolute;
  z-index: 4;
  display: grid;
  width: 220px;
  padding: 16px;
  border: 1px solid rgb(255 255 255 / 72%);
  border-radius: var(--radius-md);
  background: rgb(255 255 255 / 88%);
  box-shadow: 0 18px 44px rgb(32 37 48 / 14%);
  backdrop-filter: blur(18px);
  grid-template-columns: 36px 1fr;
}

.evidence-tag span {
  grid-row: 1 / 3;
  color: var(--brand-deep);
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  font-size: 0.75rem;
  font-weight: 700;
}

.evidence-tag strong { font-size: 0.96rem; }
.evidence-tag small { color: var(--muted); }
.evidence-tag-top { top: 60px; left: -24px; }
.evidence-tag-bottom { right: -28px; bottom: 64px; }

.annotation-line {
  position: absolute;
  z-index: 1;
  top: 17%;
  right: 0;
  width: 72%;
  height: 70%;
  border: 2px solid var(--orange);
  border-radius: 48% 52% 45% 55%;
  opacity: 0.5;
  transform: rotate(-7deg);
}