:root {
  color-scheme: light dark;
  --ink: #090b0e;
  --ink-raised: #11151a;
  --ink-soft: #171c22;
  --paper: #f5f3ef;
  --paper-cool: #f8f9fa;
  --surface: #ffffff;
  --text-dark: #0f141a;
  --text-light: #f4f6f8;
  --muted-dark: #9ba6b2;
  --muted-light: #536373;
  --cyan: #6dd5e7;
  --cyan-ink: #0e4a57;
  --amber: #f6b73c;
  --amber-ink: #704800;
  --rule-dark: rgba(244, 246, 248, 0.16);
  --rule-light: rgba(9, 11, 14, 0.16);
  --radius-sm: 0.625rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --content: 74rem;
  --reading: 48rem;
  --font-display: "Avenir Next", Avenir, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-body: Inter, "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--text-dark);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: inherit; }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 0.15rem solid var(--amber); outline-offset: 0.2rem; }
.motion-ready .reveal-target { opacity: 0; transform: translateY(1.4rem); }
.motion-ready .reveal-target.is-visible { opacity: 1; transform: translateY(0); transition: opacity 650ms ease-out, transform 650ms cubic-bezier(.2,.7,.2,1); }
.motion-ready .reveal-target.reveal-delay-1 { transition-delay: 55ms; }
.motion-ready .reveal-target.reveal-delay-2 { transition-delay: 110ms; }
.motion-ready .reveal-target.reveal-delay-3 { transition-delay: 165ms; }

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 1000;
  transform: translateY(-180%);
  background: var(--amber);
  color: var(--ink);
  padding: 0.7rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 800;
}
.skip-link:focus { transform: translateY(0); }

.shell { width: min(calc(100% - 2rem), var(--content)); margin-inline: auto; }
.reading { width: min(100%, var(--reading)); }
.eyebrow {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 0.77rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--rule-dark);
  background: rgba(9, 11, 14, 0.94);
  color: var(--text-light);
  backdrop-filter: blur(0.9rem);
}
.nav-row { min-height: 4.5rem; display: flex; align-items: center; gap: 1.5rem; }
.brand { display: inline-flex; align-items: center; gap: 0.75rem; text-decoration: none; font-weight: 800; letter-spacing: 0.02em; }
.brand img { width: 2.3rem; height: 2.3rem; border-radius: 0.5rem; }
.brand span { white-space: nowrap; }
.nav-links { margin-left: auto; display: flex; align-items: center; gap: 0.25rem; }
.nav-links a { min-height: 2.75rem; display: inline-flex; align-items: center; padding: 0 0.85rem; border-radius: 999px; color: var(--muted-dark); text-decoration: none; font-weight: 700; font-size: 0.91rem; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text-light); background: var(--ink-soft); }
.nav-toggle { display: none; margin-left: auto; min-width: 2.75rem; min-height: 2.75rem; border: 1px solid var(--rule-dark); border-radius: 999px; background: transparent; color: var(--text-light); }

.hero { position: relative; overflow: hidden; background: var(--ink); color: var(--text-light); padding: 5.75rem 0 6.5rem; }
.hero::after { content: ""; position: absolute; inset: auto 0 0; height: 0.35rem; background: linear-gradient(90deg, var(--cyan) 0 38%, transparent 38% 62%, var(--amber) 62% 100%); opacity: 0.78; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(28rem, 1.1fr); gap: clamp(3rem, 7vw, 7rem); align-items: center; }
.hero .eyebrow { color: var(--cyan); }
.hero h1, .page-hero h1 { margin: 0; font-family: var(--font-display); font-size: clamp(3.4rem, 7vw, 6.8rem); line-height: 0.94; letter-spacing: -0.055em; max-width: 10ch; }
.hero-lede { margin: 1.7rem 0 0; color: var(--text-light); font-size: clamp(1.25rem, 2vw, 1.6rem); font-weight: 650; }
.hero-qualifier { max-width: 40rem; margin: 1rem 0 0; color: var(--muted-dark); font-size: 1.03rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }
.button { min-height: 3rem; display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; padding: 0.75rem 1.1rem; border: 1px solid transparent; border-radius: 999px; text-decoration: none; font-weight: 800; cursor: pointer; }
.button { transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease, box-shadow 180ms ease; }
.button:hover { transform: translateY(-0.15rem); box-shadow: 0 0.7rem 1.6rem rgba(9,11,14,0.16); }
.button-primary { background: var(--amber); color: var(--ink); }
.button-primary:hover { background: #ffc95f; }
.button-secondary { border-color: var(--rule-dark); background: transparent; color: var(--text-light); }
.button-secondary:hover { border-color: var(--cyan); }
.trust-line { margin: 1.6rem 0 0; color: var(--muted-dark); font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.05em; }

.store-links { display: flex; flex-wrap: wrap; align-items: center; gap: 0.8rem 1rem; margin-top: 1.4rem; }
.store-badge { display: inline-flex; align-items: center; min-height: 2.75rem; }
.store-badge img { display: block; width: auto; height: 2.75rem; }
.store-badge-google img { height: 4.1rem; margin: -0.675rem; }
.store-status { flex-basis: 100%; margin: -0.15rem 0 0; color: var(--muted-dark); font-size: 0.78rem; }

.viewfinder { position: relative; margin: 0; padding: 0.8rem; border: 1px solid var(--rule-dark); background: #050607; box-shadow: 0 2rem 5rem rgba(0,0,0,0.38); }
.viewfinder { overflow: hidden; transition: transform 320ms ease, border-color 320ms ease; }
.viewfinder:hover { transform: translateY(-0.3rem); border-color: rgba(109,213,231,0.55); }
.viewfinder img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; filter: saturate(0.9) contrast(1.02); transition: transform 700ms cubic-bezier(.2,.7,.2,1), filter 300ms ease; }
.viewfinder:hover img { transform: scale(1.025); filter: saturate(1) contrast(1.03); }
.viewfinder::before, .viewfinder::after { content: ""; position: absolute; width: 3.2rem; height: 3.2rem; z-index: 2; pointer-events: none; }
.viewfinder::before { top: 1.35rem; left: 1.35rem; border-top: 2px solid var(--amber); border-left: 2px solid var(--amber); }
.viewfinder::after { right: 1.35rem; bottom: 3.2rem; border-right: 2px solid var(--cyan); border-bottom: 2px solid var(--cyan); }
.viewfinder figcaption { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.35rem 1.1rem; padding: 0.7rem 0.2rem 0; color: var(--muted-dark); font-family: var(--font-mono); font-size: 0.75rem; line-height: 1.5; text-transform: uppercase; letter-spacing: 0.04em; }

.section { padding: clamp(4.5rem, 8vw, 8rem) 0; }
.section-white { background: var(--surface); }
.section-dark { background: var(--ink); color: var(--text-light); }
.section .eyebrow { color: var(--amber-ink); }
.section-dark .eyebrow { color: var(--cyan); }
.section-title { margin: 0; font-family: var(--font-display); font-size: clamp(2.4rem, 5vw, 4.6rem); line-height: 1.02; letter-spacing: -0.045em; max-width: 15ch; }
.section-intro { max-width: 43rem; margin: 1.2rem 0 0; color: var(--muted-light); font-size: 1.12rem; }
.section-dark .section-intro { color: var(--muted-dark); }

.spec-list { margin-top: 3.5rem; border-top: 1px solid var(--rule-light); }
.spec-row { display: grid; grid-template-columns: 4rem minmax(13rem, 0.8fr) minmax(0, 1.4fr); gap: 2rem; padding: 2rem 0; border-bottom: 1px solid var(--rule-light); align-items: start; }
.spec-row { transition: transform 220ms ease, background-color 220ms ease; }
.spec-row:hover { transform: translateX(0.35rem); background: rgba(109,213,231,0.055); }
.spec-number { font-family: var(--font-mono); color: var(--amber-ink); font-size: 0.8rem; font-weight: 800; }
.spec-row h3 { margin: 0; font-family: var(--font-display); font-size: 1.5rem; letter-spacing: -0.02em; }
.spec-row p { margin: 0; color: var(--muted-light); }

.screenshot-section { background: #e8edf0; }
.demo-stage { position: relative; max-width: 65rem; margin: 3rem auto 0; overflow: hidden; border: 1px solid rgba(9,11,14,0.2); border-radius: var(--radius-md); background: #050607; box-shadow: 0 1.5rem 3.5rem rgba(9,11,14,0.2); aspect-ratio: 16 / 9; }
.demo-stage video { width: 100%; height: 100%; object-fit: cover; }
.demo-hud { position: absolute; inset: 0; pointer-events: none; color: var(--text-light); text-shadow: 0 0.1rem 0.35rem rgba(0,0,0,0.7); }
.demo-hud-head { position: absolute; top: 1rem; left: 1rem; display: flex; align-items: center; gap: 0.55rem; padding: 0.5rem 0.7rem; border: 1px solid rgba(255,255,255,0.2); background: rgba(5,6,7,0.72); font-family: var(--font-mono); font-size: 0.73rem; letter-spacing: 0.06em; }
.demo-live-dot { width: 0.55rem; height: 0.55rem; border-radius: 50%; background: var(--amber); box-shadow: 0 0 0 0.24rem rgba(246,183,60,0.2); }
.demo-meter-reticle { position: absolute; left: 45%; top: 28%; width: 20%; aspect-ratio: 1.25; border: 2px solid var(--cyan); box-shadow: 0 0 0 1px rgba(5,6,7,0.35); }
.demo-meter-reticle::before, .demo-meter-reticle::after { content: ""; position: absolute; left: 50%; top: 50%; background: var(--cyan); transform: translate(-50%, -50%); }
.demo-meter-reticle::before { width: 1.6rem; height: 1px; }
.demo-meter-reticle::after { width: 1px; height: 1.6rem; }
.demo-meter-reticle span { position: absolute; left: -2px; bottom: 100%; padding: 0.25rem 0.45rem; background: var(--cyan); color: var(--ink); font-family: var(--font-mono); font-size: 0.63rem; font-weight: 800; letter-spacing: 0.06em; }
.demo-readouts { position: absolute; left: 1rem; right: 1rem; bottom: 1rem; display: grid; grid-template-columns: repeat(3, minmax(5.2rem, 0.32fr)) minmax(12rem, 1fr); gap: 0.55rem; }
.demo-readouts > div, .demo-readouts p { margin: 0; padding: 0.62rem 0.72rem; border: 1px solid rgba(255,255,255,0.2); background: rgba(5,6,7,0.78); backdrop-filter: blur(0.45rem); }
.demo-readouts span { display: block; color: #c1cad3; font-family: var(--font-mono); font-size: 0.64rem; letter-spacing: 0.08em; text-transform: uppercase; }
.demo-readouts strong { display: block; margin-top: 0.08rem; font-family: var(--font-mono); font-size: 1.18rem; }
.demo-readouts p { display: flex; align-items: center; color: var(--cyan); font-weight: 800; }
.demo-toggle { position: absolute; top: 0.85rem; right: 0.85rem; z-index: 2; min-height: 2.5rem; border: 1px solid rgba(255,255,255,0.28); border-radius: 999px; background: rgba(5,6,7,0.78); color: var(--text-light); padding: 0.45rem 0.8rem; font-weight: 800; cursor: pointer; }
.demo-caption { max-width: 56rem; margin: 1rem auto 0; color: #455867; text-align: center; }
.screenshot-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1.2rem; margin-top: 3rem; }
.screenshot-card { min-width: 0; margin: 0; overflow: hidden; border: 1px solid rgba(9,11,14,0.14); border-radius: var(--radius-md); background: #071015; box-shadow: 0 1.1rem 2.8rem rgba(9,11,14,0.14); scroll-snap-align: start; }
.screenshot-card img { width: 100%; height: auto; aspect-ratio: 660 / 1434; object-fit: cover; }
.screenshot-card figcaption { display: grid; gap: 0.25rem; padding: 1rem; color: var(--text-light); }
.screenshot-card figcaption strong { font-size: 0.95rem; line-height: 1.25; }
.screenshot-card figcaption span { color: var(--muted-dark); font-size: 0.78rem; line-height: 1.45; }

.limits { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 3.5rem; background: var(--rule-dark); border: 1px solid var(--rule-dark); }
.limit { background: var(--ink-raised); padding: 2rem; }
.limit strong { display: block; margin-bottom: 0.5rem; color: var(--text-light); font-size: 1.1rem; }
.limit p { margin: 0; color: var(--muted-dark); }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 3.5rem; }
.step { border-top: 2px solid var(--ink); padding-top: 1.25rem; }
.step { transition: transform 220ms ease, border-color 220ms ease; }
.step:hover { transform: translateY(-0.25rem); border-color: var(--amber); }
.step b { font-family: var(--font-mono); color: var(--amber-ink); font-size: 0.77rem; }
.step h3 { margin: 0.7rem 0 0.45rem; font-size: 1.25rem; }
.step p { margin: 0; color: var(--muted-light); }

.exposure-note { margin-top: 3rem; padding: clamp(1.4rem, 3vw, 2rem); border-left: 0.35rem solid var(--cyan); background: #eefbfe; }
.exposure-note h3 { margin: 0 0 0.55rem; font-family: var(--font-display); font-size: 1.45rem; }
.exposure-note p { margin: 0; max-width: 56rem; color: #304651; }

.compatibility { margin-top: 3.5rem; padding: clamp(1.5rem, 4vw, 3rem); border-left: 0.35rem solid var(--amber); background: #fff8e6; }
.compatibility h3 { margin: 0 0 0.6rem; font-family: var(--font-display); font-size: 1.75rem; }
.compatibility p { margin: 0; max-width: 54rem; color: #4f4433; }

.page-hero { background: var(--ink); color: var(--text-light); padding: 5.5rem 0 4.5rem; border-bottom: 0.35rem solid var(--cyan); }
.page-hero .eyebrow { color: var(--cyan); }
.page-hero h1 { max-width: 14ch; font-size: clamp(3rem, 6vw, 5.7rem); }
.page-hero p:last-child { max-width: 44rem; color: var(--muted-dark); font-size: 1.14rem; }
.not-found { min-height: 75vh; display: grid; align-items: center; }
.article { padding: 4rem 0 7rem; }
.article h2 { margin: 3rem 0 0.75rem; font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 2.7rem); letter-spacing: -0.035em; }
.article h2:first-child { margin-top: 0; }
.article h3 { margin-top: 2rem; }
.article p, .article li { color: #354454; }
.article a { color: var(--cyan-ink); font-weight: 700; }
.article ul, .article ol { padding-left: 1.35rem; }
.article li + li { margin-top: 0.5rem; }
.notice { margin: 2rem 0; padding: 1.25rem 1.5rem; border-left: 0.3rem solid var(--amber); background: #fff8e6; color: #4f4433; }

.faq-list { margin-top: 2rem; border-top: 1px solid var(--rule-light); }
.faq-list details { border-bottom: 1px solid var(--rule-light); }
.faq-list summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 1rem; padding: 1.35rem 0; font-weight: 800; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; font-family: var(--font-mono); color: var(--amber-ink); }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details p { margin: 0 0 1.4rem; max-width: 44rem; }

.contact-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(18rem, 0.8fr); gap: 4rem; align-items: start; }
.contact-form { display: grid; gap: 1.1rem; }
.field { display: grid; gap: 0.4rem; }
.field label { font-weight: 800; }
.field input, .field select, .field textarea { width: 100%; border: 1px solid #b9c1ca; border-radius: var(--radius-sm); background: var(--surface); color: var(--text-dark); padding: 0.78rem 0.85rem; }
.field textarea { min-height: 10rem; resize: vertical; }
.field-note { margin: 0; color: var(--muted-light); font-size: 0.85rem; }
.form-status { min-height: 1.5rem; margin: 0; font-weight: 700; }
.contact-card { padding: 2rem; background: var(--ink); color: var(--text-light); }
.contact-card h2 { margin-top: 0; }
.contact-card p { color: var(--muted-dark); }
.contact-card a { color: var(--cyan); overflow-wrap: anywhere; }
.hp-field { position: absolute !important; width: 1px !important; height: 1px !important; overflow: hidden !important; clip: rect(0 0 0 0) !important; white-space: nowrap !important; }

.site-footer { background: var(--ink); color: var(--text-light); border-top: 1px solid var(--rule-dark); padding: 3.5rem 0 2.25rem; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 3rem; }
.footer-mark { max-width: 40rem; }
.footer-mark h2 { margin: 0; font-family: var(--font-display); font-size: 2rem; }
.footer-mark p, .footer-meta { color: var(--muted-dark); }
.footer-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.5rem 1rem; align-content: start; }
.footer-links a { color: var(--text-light); text-decoration: none; }
.footer-links a:hover { color: var(--cyan); }
.footer-legal { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--rule-dark); color: var(--muted-dark); font-size: 0.76rem; }

.chat-launcher { position: fixed; right: 1rem; bottom: 1rem; z-index: 150; border: 1px solid rgba(9,11,14,0.18); border-radius: 999px; background: var(--amber); color: var(--ink); min-height: 3.25rem; padding: 0.75rem 1rem; font-weight: 850; box-shadow: 0 0.8rem 2.4rem rgba(9,11,14,0.25); cursor: pointer; }
.chat-panel { position: fixed; right: 1rem; bottom: 5rem; z-index: 151; width: min(25rem, calc(100vw - 2rem)); max-height: min(37rem, calc(100vh - 7rem)); display: grid; grid-template-rows: auto minmax(8rem, 1fr) auto; border: 1px solid var(--rule-dark); border-radius: var(--radius-md); background: var(--ink-raised); color: var(--text-light); box-shadow: 0 1.5rem 4rem rgba(0,0,0,0.42); overflow: hidden; }
.chat-panel[hidden] { display: none; }
.chat-head { display: flex; justify-content: space-between; gap: 1rem; padding: 1rem; border-bottom: 1px solid var(--rule-dark); }
.chat-head strong { display: block; }
.chat-head small { display: block; color: var(--muted-dark); }
.chat-close { border: 0; background: transparent; color: var(--text-light); font-size: 1.4rem; cursor: pointer; }
.chat-messages { overflow-y: auto; padding: 1rem; }
.chat-message { max-width: 90%; margin: 0 0 0.75rem; padding: 0.75rem 0.85rem; border-radius: 0.8rem; background: var(--ink-soft); color: var(--text-light); white-space: pre-wrap; }
.chat-message-user { margin-left: auto; background: #16333a; }
.chat-form { display: grid; grid-template-columns: 1fr auto; gap: 0.5rem; padding: 0.85rem; border-top: 1px solid var(--rule-dark); }
.chat-form input { min-width: 0; border: 1px solid #3b4652; border-radius: 999px; background: var(--ink); color: var(--text-light); padding: 0.75rem 0.9rem; }
.chat-form button { border: 0; border-radius: 999px; background: var(--cyan); color: var(--ink); padding: 0.7rem 0.9rem; font-weight: 850; cursor: pointer; }
.chat-disclosure { grid-column: 1 / -1; margin: 0; color: var(--muted-dark); font-size: 0.68rem; }

@media (max-width: 850px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-links { display: none; position: absolute; inset: 4.5rem 0 auto; margin: 0; padding: 1rem; flex-direction: column; align-items: stretch; background: var(--ink); border-bottom: 1px solid var(--rule-dark); }
  .nav-links[data-open="true"] { display: flex; }
  .nav-links a { justify-content: center; }
  .hero { padding-top: 4.25rem; }
  .hero-grid, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
  .hero-grid { gap: 3rem; }
  .hero h1 { font-size: clamp(3.2rem, 15vw, 5rem); }
  .viewfinder { width: 100%; max-width: 45rem; margin-inline: auto; }
  .spec-row { grid-template-columns: 3rem 1fr; gap: 1rem; }
  .spec-row p { grid-column: 2; }
  .steps { grid-template-columns: 1fr; }
  .limits { grid-template-columns: 1fr; }
  .screenshot-grid { grid-template-columns: none; grid-auto-flow: column; grid-auto-columns: minmax(16rem, 78vw); overflow-x: auto; overscroll-behavior-inline: contain; scroll-snap-type: inline mandatory; padding: 0.2rem 0.1rem 1.1rem; }
  .demo-readouts { grid-template-columns: repeat(3, 1fr); }
  .demo-readouts p { grid-column: 1 / -1; }
}

@media (max-width: 520px) {
  .shell { width: min(calc(100% - 1.35rem), var(--content)); }
  .brand span { font-size: 0.92rem; }
  .hero-actions { display: grid; }
  .button { width: 100%; }
  .viewfinder figcaption { gap: 0.2rem 0.8rem; }
  .page-hero { padding-top: 4rem; }
  .chat-launcher { right: 0.7rem; bottom: 0.7rem; }
  .chat-panel { right: 0.7rem; bottom: 4.6rem; width: calc(100vw - 1.4rem); }
  .demo-stage { border-radius: var(--radius-sm); }
  .demo-hud-head { top: 0.55rem; left: 0.55rem; font-size: 0.58rem; }
  .demo-toggle { top: 0.45rem; right: 0.45rem; min-height: 2.15rem; padding: 0.35rem 0.65rem; font-size: 0.72rem; }
  .demo-meter-reticle { left: 48%; top: 25%; width: 24%; }
  .demo-readouts { left: 0.45rem; right: 0.45rem; bottom: 0.45rem; gap: 0.25rem; }
  .demo-readouts > div, .demo-readouts p { padding: 0.35rem 0.42rem; }
  .demo-readouts strong { font-size: 0.82rem; }
  .demo-readouts span { font-size: 0.5rem; }
  .demo-readouts p { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .motion-ready .reveal-target { opacity: 1; transform: none; }
}

@media (hover: none) {
  .button:hover, .viewfinder:hover, .spec-row:hover, .step:hover { transform: none; box-shadow: none; }
  .viewfinder:hover img { transform: none; }
}