:root {
  --ink: #0b1324;
  --graphite: #1a2438;
  --graphite-2: #243049;
  --graphite-3: #202b42;
  --blue: #1d4ed8;
  --blue-hover: #2563eb;
  --cyan: #22d3ee;
  --text: #e2e8f0;
  --text-muted: #a8b3c7;
  --text-dim: #94a3b8;
  --white: #ffffff;
  --danger: #f87171;
  --border: rgba(34, 211, 238, 0.14);
  --border-strong: rgba(34, 211, 238, 0.28);
  --cyan-soft: rgba(34, 211, 238, 0.08);
  --cyan-glow: rgba(34, 211, 238, 0.36);
  --font-display: "Space Grotesk", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  --container: 1120px;
  --gutter-desktop: 24px;
  --gutter-mobile: 16px;
  --section-gap: 128px;
  --section-gap-mobile: 80px;
  --card-padding: 32px;
  --card-padding-mobile: 24px;
  --radius-card: 8px;
  --radius-button: 6px;
  --radius-small: 4px;
  --radius-pill: 999px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 180ms;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background: var(--ink);
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img, svg { display: block; max-width: 100%; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-family: var(--font-display); letter-spacing: -0.045em; line-height: 1.08; }
ul, ol { margin-top: 0; }
.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; }

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 78% 7%, rgba(29, 78, 216, 0.16), transparent 32%),
    linear-gradient(180deg, #0b1324 0%, #0d1628 42%, #0b1324 100%);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: linear-gradient(rgba(34, 211, 238, 0.026) 1px, transparent 1px), linear-gradient(90deg, rgba(34, 211, 238, 0.026) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.55), rgba(0,0,0,.06) 42%, transparent 78%);
}
.container { width: min(calc(100% - 48px), var(--container)); margin-inline: auto; }
.section { padding: var(--section-gap) 0; border-top: 1px solid rgba(34, 211, 238, 0.10); }
.section-dark { background: linear-gradient(180deg, rgba(26, 36, 56, 0.72), rgba(11, 19, 36, 0.48)); }
.section-head { display: grid; grid-template-columns: minmax(0, .54fr) minmax(320px, .46fr); gap: 40px; margin-bottom: 40px; align-items: end; }
.section-head > p { margin-bottom: 6px; color: var(--text-muted); }
.hero { padding: 92px 0 80px; border-top: 0; }
.hero-grid { display: grid; grid-template-columns: minmax(0, .58fr) minmax(320px, .42fr); gap: 56px; align-items: center; }
.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.case-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.price-grid { display: grid; grid-template-columns: minmax(0, .58fr) minmax(330px, .42fr); gap: 24px; align-items: stretch; }
.about-grid { display: grid; grid-template-columns: minmax(260px, .4fr) minmax(0, .6fr); gap: 48px; align-items: start; }
.faq-wrap { display: grid; grid-template-columns: .34fr .66fr; gap: 48px; }
.ai-boost-case { display: grid; grid-template-columns: minmax(0, .44fr) minmax(320px, .56fr); gap: 48px; align-items: start; }

.skip-link {
  position: fixed;
  top: -72px;
  left: 16px;
  z-index: 100;
  padding: 10px 14px;
  color: var(--white);
  background: var(--blue);
  border-radius: var(--radius-button);
  text-decoration: none;
}
.skip-link:focus { top: 14px; }
.site-header { position: sticky; top: 0; z-index: 60; border-bottom: 1px solid var(--border); background: rgba(11, 19, 36, 0.94); backdrop-filter: blur(18px); }
.header-row { min-height: 72px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 600; letter-spacing: -0.02em; }
.brand img { width: 28px; height: 28px; }
.nav { display: flex; justify-content: center; gap: 6px; }
.nav a { padding: 8px 10px; color: var(--text-muted); border-radius: var(--radius-small); font-size: 14px; text-decoration: none; transition: color var(--duration-fast) var(--ease-out), background var(--duration-fast) var(--ease-out); }
.nav a:hover, .nav a:focus-visible { color: var(--cyan); background: var(--cyan-soft); outline: none; }
.button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; gap: 10px; padding: 14px 24px; border: 1px solid transparent; border-radius: var(--radius-button); font-weight: 500; line-height: 1; text-align: center; text-decoration: none; transition: transform var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast) var(--ease-out), background var(--duration-fast) var(--ease-out), border-color var(--duration-fast) var(--ease-out), color var(--duration-fast) var(--ease-out); }
.button:hover { transform: translateY(-1px); }
.button:focus-visible, summary:focus-visible, a:focus-visible { outline: 3px solid rgba(34, 211, 238, 0.36); outline-offset: 4px; }
.button-primary { color: var(--white); background: var(--blue); }
.button-primary:hover { background: var(--blue-hover); box-shadow: 0 0 32px rgba(29, 78, 216, 0.35); }
.button-secondary { color: var(--cyan); background: transparent; border-color: rgba(34, 211, 238, 0.5); }
.button-secondary:hover { border-color: var(--cyan); background: rgba(34, 211, 238, 0.06); }
.button-light { color: var(--blue); background: var(--white); }
.header-cta { min-height: 42px; padding: 12px 18px; font-size: 15px; }
.card { min-height: 100%; padding: var(--card-padding); background: var(--graphite); border: 1px solid var(--border); border-radius: var(--radius-card); transition: border-color var(--duration-fast) var(--ease-out), background var(--duration-fast) var(--ease-out); }
.card:hover { border-color: var(--border-strong); }
.num { display: block; margin-bottom: 18px; color: var(--cyan); font-family: var(--font-mono); font-size: 14px; font-weight: 500; }
.offer-facts { display: flex; flex-wrap: wrap; gap: 10px; margin: 28px 0 0; padding: 0; list-style: none; }
.offer-facts li, .role-row span, .pill-list li { padding: 8px 12px; color: var(--cyan); background: var(--cyan-soft); border: 1px solid var(--border); border-radius: var(--radius-pill); font-family: var(--font-mono); font-size: 12px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.microcopy, .trust-line, .disclaimer { color: var(--text-dim); font-size: 13px; }
.microcopy { margin: 16px 0 0; }
.trust-line { margin: 26px 0 0; }
.portrait-frame { overflow: hidden; background: var(--graphite-2); border: 1px solid var(--border); border-radius: var(--radius-card); }
.portrait-frame img { width: 100%; height: 100%; object-fit: cover; object-position: center 38%; }
.expert-card { padding: 16px; background: rgba(26, 36, 56, 0.82); border: 1px solid var(--border); border-radius: calc(var(--radius-card) + 4px); }
.expert-card .portrait-frame { aspect-ratio: 4 / 5; }
.expert-copy { padding: 18px 6px 4px; }
.expert-copy strong { display: block; color: var(--white); font-size: 22px; }
.expert-copy p { margin: 8px 0 0; color: var(--text-muted); font-size: 15px; }
.section-note { max-width: 820px; margin: 32px auto 0; color: var(--text-muted); font-size: 19px; text-align: center; }
.proof-flow { margin-bottom: 24px; padding: 18px; color: var(--cyan); background: rgba(34, 211, 238, 0.06); border: 1px solid var(--border); border-radius: var(--radius-card); font-family: var(--font-mono); font-size: 14px; text-align: center; }
.check-list, .x-list { display: grid; gap: 10px; padding-left: 0; list-style: none; }
.check-list li, .x-list li { position: relative; padding-left: 28px; color: var(--text-muted); }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--cyan); }
.x-list li::before { content: "—"; position: absolute; left: 0; color: var(--danger); }
.pill-list { display: flex; flex-wrap: wrap; gap: 10px; align-content: start; margin: 0; padding: 0; list-style: none; }
.use-case-panel { display: grid; grid-template-columns: minmax(0, .5fr) minmax(320px, .5fr); gap: 48px; padding: 36px; background: rgba(26, 36, 56, 0.72); border: 1px solid var(--border); border-radius: var(--radius-card); }
.steps-list { position: relative; display: grid; gap: 36px; padding-left: 30px; }
.steps-list::before { content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 1px; background: rgba(34, 211, 238, 0.5); opacity: .55; }
.step-row { display: grid; grid-template-columns: 88px minmax(0, 1fr); gap: 16px; }
.step-row b, .case-timeline span { color: var(--cyan); font-family: var(--font-mono); font-size: 14px; font-weight: 500; }
.case-timeline { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; }
.case-timeline li { display: grid; grid-template-columns: 44px 1fr; gap: 12px; padding: 16px; color: var(--text-muted); background: rgba(11, 19, 36, .44); border: 1px solid rgba(34, 211, 238, 0.10); border-radius: var(--radius-small); }
.native-line { color: var(--white); font-size: 22px; font-weight: 600; }
.price-card { background: var(--blue); border-color: rgba(255,255,255,.14); }
.price-card h3, .price-card p, .price-card li { color: var(--white); }
.price-value { color: var(--white); font-size: clamp(52px, 7vw, 72px); font-weight: 600; line-height: .95; font-variant-numeric: tabular-nums; }
.price-card .button { width: 100%; margin-top: 20px; }
.about-portrait { aspect-ratio: 4 / 5; }
.role-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.faq-list { border-top: 1px solid var(--border); }
details { padding: 24px 0; border-bottom: 1px solid var(--border); }
summary { cursor: pointer; color: var(--white); font-size: 20px; font-weight: 500; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "⌄"; float: right; color: var(--text-muted); transition: transform var(--duration-fast) var(--ease-out), color var(--duration-fast) var(--ease-out); }
details[open] summary { color: var(--cyan); text-decoration: underline; text-decoration-color: rgba(34, 211, 238, 0.5); text-decoration-thickness: 2px; text-underline-offset: 8px; }
details[open] summary::after { transform: rotate(180deg); color: var(--cyan); }
details p { margin: 18px 0 0; color: var(--text-muted); }
.final-cta h2, .final-cta p { margin-inline: auto; }
.final-cta .button { margin-top: 18px; }
.footer { padding: 48px 0; border-top: 1px solid rgba(34, 211, 238, 0.5); }
.footer-row { display: flex; justify-content: space-between; align-items: center; gap: 20px; color: var(--text-dim); font-size: 14px; }
.footer-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); }
.footer-brand img { width: 20px; height: 20px; }

.eyebrow, .kicker, .mono-caption { font-family: var(--font-mono); font-size: 12px; line-height: 1.3; letter-spacing: 0.05em; text-transform: uppercase; }
.eyebrow, .kicker { margin: 0 0 18px; color: var(--cyan); }
h1 { max-width: 760px; margin-bottom: 24px; color: var(--white); font-size: clamp(42px, 5vw, 68px); font-weight: 600; }
h2 { max-width: 820px; margin-bottom: 18px; color: var(--white); font-size: clamp(32px, 4vw, 52px); font-weight: 600; }
h3 { margin-bottom: 12px; color: var(--white); font-size: 22px; font-weight: 500; }
.lead, .body-large { color: var(--text-muted); font-size: 19px; line-height: 1.62; }
.lead { max-width: 720px; margin-bottom: 0; }
.card p, .muted, .step-row p { color: var(--text-muted); }
.card b { color: var(--text); }
@media (max-width: 980px) {
  .header-row { grid-template-columns: 1fr auto; }
  .nav { grid-column: 1 / -1; justify-content: flex-start; overflow-x: auto; padding-bottom: 10px; }
  .hero-grid, .section-head, .price-grid, .about-grid, .faq-wrap, .ai-boost-case, .use-case-panel { grid-template-columns: 1fr; }
  .card-grid, .case-grid { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  html { scroll-padding-top: 126px; }
  .container { width: min(calc(100% - 32px), var(--container)); }
  .section { padding: var(--section-gap-mobile) 0; }
  .hero { padding: 56px 0 72px; }
  .header-row { min-height: 60px; gap: 10px; }
  .brand span { font-size: 14px; }
  .header-cta { min-height: 38px; padding: 10px 12px; font-size: 13px; }
  .nav { margin: 0 -16px; padding: 0 16px 10px; }
  .nav a { flex: 0 0 auto; padding: 6px 8px; font-size: 12px; }
  h1 { font-size: clamp(35px, 11vw, 44px); }
  h2 { font-size: clamp(28px, 8.4vw, 34px); }
  h3, summary { font-size: 20px; }
  body { font-size: 16px; }
  .lead, .body-large { font-size: 17px; }
  .hero-actions, .footer-row { align-items: stretch; flex-direction: column; }
  .button { width: 100%; }
  .expert-card { padding: 12px; }
  .expert-card .portrait-frame { max-height: 520px; }
  .card, .use-case-panel { padding: var(--card-padding-mobile); }
  .offer-facts { display: grid; grid-template-columns: 1fr 1fr; }
  .offer-facts li { text-align: center; }
  .step-row { grid-template-columns: 58px minmax(0, 1fr); }
  .price-value { font-size: 52px; }
  .faq-wrap { gap: 28px; }
}
@media (max-width: 360px) {
  .container { width: min(calc(100% - 24px), var(--container)); }
  h1 { font-size: 34px; }
  h2 { font-size: 27px; }
  .offer-facts { grid-template-columns: 1fr; }
  .button { padding-inline: 16px; }
  .step-row { grid-template-columns: 1fr; gap: 6px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}