/* ============================================================
   cust*m Tab - landing page
   Static CSS, no build step, matching the extension itself.

   THEME LOCK: this page is dark only, deliberately. The product's whole
   identity is a dark ambient gradient; a light variant would show the visitor
   something the extension does not look like by default. The page declares
   `color-scheme: dark` so browser chrome matches rather than fighting it.
   ============================================================ */

h1,
h2,
h3,
.wordmark {
  line-height: 1.1;
}

:root {
  color-scheme: dark;

  --ink: #f6f4fb;
  --ink-dim: rgb(246 244 251 / 0.66);
  --ink-faint: rgb(246 244 251 / 0.4);

  --base: #120434;
  --line: rgb(255 255 255 / 0.12);
  --line-soft: rgb(255 255 255 / 0.07);

  /* One accent, used on every interactive surface across the whole page. */
  --accent: #ff4d1a;
  --accent-soft: rgb(255 77 26 / 0.16);

  --shell: 1180px;

  /* One radius system: pill for interactive, 20px for surfaces. */
  --r-surface: 20px;
  --r-pill: 999px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--base);
  color: var(--ink);
  font-family:
    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 28px;
}

/* ── Ambient backdrop ───────────────────────────────
   The same three-blob construction the extension uses, so the page and the
   product share one visual language rather than merely resembling each other. */
.ambient {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background: var(--base);
}
.ambient span {
  position: absolute;
  left: 50%;
  bottom: 0;
  border-radius: 50%;
  filter: blur(90px);
}
.ambient .a {
  width: 130vw;
  aspect-ratio: 1;
  background: #29058e;
  transform: translate(-50%, 58%);
}
.ambient .b {
  width: 110vw;
  aspect-ratio: 1.15;
  background: #ff3300;
  opacity: 0.4;
  transform: translate(-50%, 64%);
}
.ambient .c {
  width: 86vw;
  aspect-ratio: 1.3;
  background: #edd30f;
  opacity: 0.24;
  transform: translate(-50%, 70%);
}

main,
header,
footer {
  position: relative;
  z-index: 1;
}

/* ── Navigation: one line, 68px ─────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 68px;
  display: flex;
  align-items: center;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: rgb(18 4 52 / 0.72);
  border-bottom: 1px solid var(--line-soft);
}
.nav .shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-weight: 600;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}
.brand img {
  width: 26px;
  height: 26px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
}
.nav-links a {
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.18s var(--ease);
}
.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--ink);
}

/* ── Buttons ─────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  white-space: nowrap;
  padding: 13px 24px;
  border-radius: var(--r-pill);
  font-size: 15.5px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition:
    transform 0.18s var(--ease),
    background 0.18s var(--ease),
    border-color 0.18s var(--ease);
}
.btn-primary {
  background: var(--accent);
  /* Near-black on orange clears 4.5:1; white on orange would not. */
  color: #16060a;
}
.btn-primary:hover {
  transform: translateY(-2px);
}
.btn-primary:active {
  transform: translateY(0) scale(0.985);
}
.btn-ghost {
  color: var(--ink);
  border-color: var(--line);
  background: rgb(255 255 255 / 0.04);
}
.btn-ghost:hover {
  border-color: rgb(255 255 255 / 0.3);
  transform: translateY(-2px);
}
.btn:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

/* ── Hero: asymmetric split ─────────────────────────────────── */
.hero {
  padding: 84px 0 96px;
}
.hero .shell {
  display: grid;
  grid-template-columns: 1fr 1.08fr;
  gap: 62px;
  align-items: center;
}
.eyebrow {
  display: inline-block;
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(2.6rem, 5vw, 3.9rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
  font-weight: 600;
}
.hero h1 em {
  font-style: italic;
  /* Descender clearance for the italic word. */
  line-height: 1.12;
  padding-bottom: 2px;
  display: inline-block;
}
.hero p {
  margin-top: 22px;
  font-size: 18.5px;
  color: var(--ink-dim);
  max-width: 46ch;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 13px;
  margin-top: 34px;
}

.shot {
  border-radius: var(--r-surface);
  border: 1px solid var(--line);
  overflow: hidden;
  box-shadow: 0 40px 90px rgb(0 0 0 / 0.55);
  display: block;
  width: 100%;
  height: auto;
}

/* ── Showcase: horizontal scroll-snap ───────────────────────── */
.showcase {
  padding: 26px 0 96px;
}
.showcase h2 {
  font-size: clamp(1.9rem, 3.2vw, 2.6rem);
  letter-spacing: -0.03em;
  font-weight: 600;
  max-width: 20ch;
}
.showcase > .shell > p {
  margin-top: 14px;
  color: var(--ink-dim);
  max-width: 56ch;
}
.rail {
  display: flex;
  gap: 22px;
  margin-top: 40px;
  padding: 4px 28px 22px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
}
.rail figure {
  flex: 0 0 min(560px, 82vw);
  scroll-snap-align: center;
}
.rail img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  border: 1px solid var(--line);
  box-shadow: 0 24px 60px rgb(0 0 0 / 0.45);
}
.rail figcaption {
  margin-top: 14px;
  font-size: 15px;
  color: var(--ink-dim);
}
.rail figcaption b {
  color: var(--ink);
  font-weight: 600;
}

/* ── Privacy: editorial statement ───────────────────────────── */
.privacy {
  padding: 96px 0;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.privacy blockquote {
  font-size: clamp(1.6rem, 3.4vw, 2.5rem);
  line-height: 1.24;
  letter-spacing: -0.03em;
  font-weight: 500;
  max-width: 21ch;
}
.privacy blockquote span {
  color: var(--accent);
}
.ledger {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  border-top: 1px solid var(--line-soft);
}
.ledger div {
  padding: 22px 22px 22px 0;
  border-bottom: 1px solid var(--line-soft);
}
.ledger dt {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
}
.ledger dd {
  margin-top: 7px;
  font-size: 16.5px;
  color: var(--ink);
}

/* ── Bento: five cells for five features ────────────────────── */
.features {
  padding: 96px 0;
}
.features h2 {
  font-size: clamp(1.9rem, 3.2vw, 2.6rem);
  letter-spacing: -0.03em;
  font-weight: 600;
  max-width: 18ch;
}
.bento {
  margin-top: 42px;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}
.cell {
  border-radius: var(--r-surface);
  border: 1px solid var(--line-soft);
  padding: 30px;
  background: rgb(255 255 255 / 0.035);
}
.cell:nth-child(1) {
  grid-column: span 4;
  background:
    radial-gradient(120% 140% at 12% 100%, rgb(255 77 26 / 0.22), transparent 62%),
    rgb(255 255 255 / 0.035);
}
.cell:nth-child(2) {
  grid-column: span 2;
}
.cell:nth-child(3) {
  grid-column: span 2;
}
.cell:nth-child(4) {
  grid-column: span 2;
  background:
    radial-gradient(130% 130% at 90% 0%, rgb(41 5 142 / 0.5), transparent 60%),
    rgb(255 255 255 / 0.035);
}
.cell:nth-child(5) {
  grid-column: span 2;
}
.cell h3 {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.015em;
}
.cell p {
  margin-top: 10px;
  font-size: 15.5px;
  color: var(--ink-dim);
}

/* ── Photo backgrounds: split ───────────────────────────────── */
.photos {
  padding: 0 0 96px;
}
.photos .shell {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 58px;
  align-items: center;
}
.photos h2 {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  letter-spacing: -0.03em;
  font-weight: 600;
  max-width: 16ch;
}
.photos p {
  margin-top: 18px;
  color: var(--ink-dim);
  max-width: 50ch;
}
.photos p + p {
  margin-top: 14px;
}
.photos a.inline {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--accent);
}
.photos a.inline:hover {
  color: var(--accent);
}

/* ── Install ────────────────────────────────────────────────── */
.install {
  padding: 96px 0;
  border-top: 1px solid var(--line-soft);
  text-align: center;
}
.install h2 {
  font-size: clamp(2rem, 3.6vw, 2.8rem);
  letter-spacing: -0.03em;
  font-weight: 600;
}
.install > .shell > p {
  margin-top: 16px;
  color: var(--ink-dim);
  max-width: 52ch;
  margin-inline: auto;
}
.install .hero-actions {
  justify-content: center;
}
.steps {
  margin: 44px auto 0;
  max-width: 660px;
  text-align: left;
  display: grid;
  gap: 2px;
  counter-reset: step;
}
.steps li {
  list-style: none;
  counter-increment: step;
  padding: 18px 0 18px 46px;
  position: relative;
  border-bottom: 1px solid var(--line-soft);
  color: var(--ink-dim);
  font-size: 16px;
}
.steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 18px;
  width: 26px;
  height: 26px;
  border-radius: var(--r-pill);
  background: var(--accent-soft);
  color: var(--accent);
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 700;
}
.steps li b {
  color: var(--ink);
  font-weight: 600;
}
.steps code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 14px;
  background: rgb(255 255 255 / 0.07);
  padding: 2px 7px;
  border-radius: 6px;
}

/* ── Footer ─────────────────────────────────────────────────── */
.foot {
  padding: 40px 0 60px;
  border-top: 1px solid var(--line-soft);
}
.foot .shell {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
  justify-content: space-between;
}
.foot p {
  font-size: 14.5px;
  color: var(--ink-faint);
}
.foot nav {
  display: flex;
  gap: 22px;
}
.foot a {
  color: var(--ink-dim);
  font-size: 14.5px;
  text-decoration: none;
}
.foot a:hover {
  color: var(--ink);
}

/* ── Document pages (privacy) ───────────────────────────────── */
.doc {
  padding: 64px 0 96px;
  max-width: 760px;
}
.doc h1 {
  font-size: clamp(2.1rem, 4vw, 3rem);
  letter-spacing: -0.035em;
  font-weight: 600;
}
.doc .updated {
  margin-top: 12px;
  color: var(--ink-faint);
  font-size: 15px;
}
.doc h2 {
  margin-top: 48px;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  font-weight: 600;
}
.doc p,
.doc li {
  margin-top: 14px;
  color: var(--ink-dim);
}
.doc ul {
  padding-left: 22px;
}
.doc strong {
  color: var(--ink);
  font-weight: 600;
}
.doc a {
  color: var(--ink);
  border-bottom: 1px solid var(--accent);
  text-decoration: none;
}
.doc table {
  margin-top: 22px;
  width: 100%;
  border-collapse: collapse;
  font-size: 15.5px;
}
.doc th,
.doc td {
  text-align: left;
  padding: 13px 14px 13px 0;
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}
.doc th {
  color: var(--ink);
  font-weight: 600;
}
.doc td {
  color: var(--ink-dim);
}

/* ── Scroll reveal ──────────────────────────────────
   Motion communicates sequence: each section announces itself as it becomes
   relevant. Driven by IntersectionObserver, never a scroll listener. */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 0.7s var(--ease),
    transform 0.7s var(--ease);
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero .shell,
  .photos .shell {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero {
    padding: 56px 0 72px;
  }
  .bento {
    grid-template-columns: 1fr;
  }
  .cell:nth-child(n) {
    grid-column: span 1;
  }
  .nav-links a:not(.btn) {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .btn:hover {
    transform: none;
  }
}