/* ==========================================================================
   AI Experts — stylesheet
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,500;0,9..144,600;0,9..144,700;1,9..144,500&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  /* color */
  --bg: #0b0d10;
  --bg-alt: #0f1317;
  --surface: #161a20;
  --surface-2: #1b2028;
  --border: #262b33;
  --border-soft: rgba(243, 241, 234, 0.08);
  --text: #f3f1ea;
  --text-dim: #9ba1ac;
  --text-faint: #6b7280;
  --accent: #c9a15a;
  --accent-strong: #e4c083;
  --accent-ink: #1b1204;
  --success: #7ea788;

  /* type */
  --font-display: 'Fraunces', ui-serif, Georgia, serif;
  --font-body: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, monospace;

  /* layout */
  --content-width: 1120px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4, p { margin: 0; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea { font: inherit; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.container {
  width: 100%;
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: 24px;
}

@media (min-width: 640px) {
  .container { padding-inline: 40px; }
}

section { position: relative; }

.section-pad { padding-block: 88px; }
@media (max-width: 640px) {
  .section-pad { padding-block: 64px; }
}

.bg-alt { background: var(--bg-alt); }
.bg-surface { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

/* ---------- typography helpers ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--accent);
  display: inline-block;
}

h2.section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  max-width: 720px;
}

.section-lede {
  margin-top: 18px;
  font-size: 17px;
  color: var(--text-dim);
  max-width: 620px;
  line-height: 1.7;
}

.mono-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  white-space: nowrap;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
  cursor: pointer;
}
.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 0 0 0 rgba(201, 161, 90, 0.4);
}
.btn-primary:hover {
  background: var(--accent-strong);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px -8px rgba(201, 161, 90, 0.45);
}
.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
  background: transparent;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-strong); }

.btn-arrow { transition: transform 0.15s ease; }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* ==========================================================================
   Nav
   ========================================================================== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 13, 16, 0.82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-soft);
}
.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 16px;
}
.nav__brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.nav__mark { width: 26px; height: 26px; flex-shrink: 0; }
.nav__wordmark {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav__links a {
  font-size: 14.5px;
  color: var(--text-dim);
  transition: color 0.15s ease;
}
.nav__links a:hover { color: var(--text); }
.nav__actions { display: flex; align-items: center; gap: 20px; }
.nav__cta { padding: 11px 20px; font-size: 14px; }

.nav__toggle {
  display: none;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
}
.nav__toggle span,
.nav__toggle span::before,
.nav__toggle span::after {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  position: relative;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav__toggle span::before { position: absolute; top: -6px; }
.nav__toggle span::after { position: absolute; top: 6px; }
.nav.is-open .nav__toggle span { background: transparent; }
.nav.is-open .nav__toggle span::before { transform: translateY(6px) rotate(45deg); background: var(--text); }
.nav.is-open .nav__toggle span::after { transform: translateY(-6px) rotate(-45deg); background: var(--text); }

@media (max-width: 860px) {
  .nav__links { display: none; }
  .nav__toggle { display: flex; }
  .nav.is-open .nav__mobile-links {
    display: flex;
  }
  .nav .nav__wordmark { max-width: 42vw; }
}
@media (max-width: 480px) {
  .nav .nav__wordmark { max-width: 32vw; font-size: 11.5px; }
  .nav__actions { gap: 12px; }
  .nav__cta { padding: 10px 14px; font-size: 13px; }
}
.nav__mobile-links {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding-block: 8px 20px;
  border-top: 1px solid var(--border-soft);
  margin-top: 14px;
}
.nav__mobile-links a {
  padding: 12px 4px;
  font-size: 15.5px;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border-soft);
}
.nav__mobile-links a:last-child { border-bottom: none; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  padding-block: 84px 64px;
  background:
    radial-gradient(ellipse 900px 500px at 82% -10%, rgba(201, 161, 90, 0.12), transparent 60%),
    var(--bg);
}
.hero__inner { max-width: 780px; }
.hero__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(34px, 5.4vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.015em;
}
.hero__title em {
  font-style: italic;
  font-weight: 500;
  color: var(--accent-strong);
}
.hero__sub {
  margin-top: 24px;
  font-size: 18.5px;
  line-height: 1.65;
  color: var(--text-dim);
  max-width: 620px;
}
.hero__actions {
  margin-top: 36px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 24px;
}
.hero__proof {
  display: flex;
  align-items: center;
  gap: 12px;
}
.hero__proof img { height: 22px; width: auto; }
.hero__proof-text { font-family: var(--font-mono); font-size: 12.5px; color: var(--text-faint); line-height: 1.4; }
.hero__proof-text strong { color: var(--text-dim); }

.icp-strip {
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--border-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
}
.icp-strip span {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.icp-strip span b { color: var(--text-dim); font-weight: 500; }

/* ==========================================================================
   Pipeline (signature element)
   ========================================================================== */
.pipeline { padding-block: 72px; }
.pipeline__head { max-width: 640px; margin-bottom: 56px; }

.pipeline__row {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 28px;
}
.pipeline__track {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border) 8%, var(--border) 92%, transparent);
  z-index: 0;
}
.pipeline__track::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, var(--accent) 45%, var(--accent) 55%, transparent);
  transform: scaleX(0);
  transform-origin: center;
  animation: pipeline-charge 3.2s ease-in-out infinite;
}
@keyframes pipeline-charge {
  0% { transform: scaleX(0); opacity: 0; }
  35% { opacity: 1; }
  55% { transform: scaleX(1); opacity: 0.6; }
  100% { transform: scaleX(1); opacity: 0; }
}

.pipeline__inputs {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-end;
}
.pipeline__tag {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--text-dim);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  padding: 8px 14px;
  border-radius: 999px;
  white-space: nowrap;
}

.pipeline__node {
  position: relative;
  z-index: 1;
  width: 108px;
  height: 108px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 0 6px var(--bg-alt), 0 0 40px -10px rgba(201, 161, 90, 0.5);
}
.pipeline__node img { width: 46px; height: 46px; }

.pipeline__output {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.pipeline__stat {
  font-family: var(--font-display);
  font-size: clamp(30px, 3vw, 40px);
  font-weight: 600;
  color: var(--accent-strong);
  line-height: 1;
}
.pipeline__stat-label {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

@media (max-width: 760px) {
  .pipeline__row { display: flex; flex-direction: column; gap: 22px; }
  .pipeline__track { display: none; }
  .pipeline__inputs { align-items: center; flex-direction: row; flex-wrap: wrap; justify-content: center; }
  .pipeline__output { align-items: center; text-align: center; }
  .pipeline__connector { font-family: var(--font-mono); color: var(--accent); font-size: 18px; }
}
.pipeline__connector { display: none; }
@media (max-width: 760px) {
  .pipeline__connector { display: block; }
}

/* ==========================================================================
   Before / After
   ========================================================================== */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.split__col { padding: 64px 48px; }
.split__col--before { border-right: 1px solid var(--border); }
@media (max-width: 860px) {
  .split { grid-template-columns: 1fr; }
  .split__col { padding: 48px 24px; }
  .split__col--before { border-right: none; border-bottom: 1px solid var(--border); }
}
.split__label {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.split__col--before .split__label { color: var(--text-faint); }
.split__col--after .split__label { color: var(--accent); }
.split__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 2.6vw, 28px);
  font-weight: 600;
  margin-top: 14px;
  line-height: 1.25;
}
.split__body { margin-top: 16px; color: var(--text-dim); font-size: 16px; line-height: 1.75; max-width: 460px; }

.stat-row {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
}
.stat-row__item { min-width: 140px; }
.stat-row__num {
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--text);
  font-weight: 600;
}
.stat-row__label { margin-top: 4px; font-size: 13px; color: var(--text-faint); max-width: 160px; }

.big-stat {
  margin-top: 32px;
  display: inline-flex;
  align-items: baseline;
  gap: 14px;
  padding: 20px 24px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}
.big-stat__num {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 600;
  color: var(--accent-strong);
  line-height: 1;
}
.big-stat__label { font-size: 13.5px; color: var(--text-dim); max-width: 150px; line-height: 1.4; }

/* ==========================================================================
   Process
   ========================================================================== */
.process-list { margin-top: 56px; }
.process-item {
  display: grid;
  grid-template-columns: 90px 100px 1fr;
  gap: 24px;
  padding-block: 32px;
  border-top: 1px solid var(--border-soft);
}
.process-item:last-child { border-bottom: 1px solid var(--border-soft); }
.process-item__num {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent);
}
.process-item__day {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding-top: 3px;
}
.process-item__title {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
}
.process-item__body { margin-top: 10px; color: var(--text-dim); font-size: 15.5px; line-height: 1.7; max-width: 560px; }

@media (max-width: 640px) {
  .process-item { grid-template-columns: 1fr; gap: 8px; }
  .process-item__day { padding-top: 0; }
}

/* ==========================================================================
   Proof / case studies
   ========================================================================== */
.case-grid {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
@media (max-width: 760px) { .case-grid { grid-template-columns: 1fr; } }

.case-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.case-card__tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
}
.case-card__title {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 600;
}
.case-card__row { display: flex; flex-direction: column; gap: 4px; }
.case-card__row-label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
}
.case-card__row-text { font-size: 14.5px; color: var(--text-dim); line-height: 1.6; }
.case-card__result {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--accent-strong);
  font-weight: 600;
}

/* ==========================================================================
   Testimonials
   ========================================================================== */
.trust-row { display: flex; align-items: center; gap: 16px; margin-bottom: 56px; }
.trust-row img { height: 26px; width: auto; }
.trust-row span { font-family: var(--font-mono); font-size: 13px; color: var(--text-faint); }

.testi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 940px) { .testi-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .testi-grid { grid-template-columns: 1fr; } }

.testi-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.testi-card__stars { color: var(--accent); font-size: 13px; letter-spacing: 2px; }
.testi-card__quote { font-size: 15px; line-height: 1.7; color: var(--text); flex-grow: 1; }
.testi-card__author { font-size: 13.5px; color: var(--text-dim); }
.testi-card__author strong { color: var(--text); font-weight: 600; display: block; margin-bottom: 2px; }
.testi-card__date { font-family: var(--font-mono); font-size: 11.5px; color: var(--text-faint); margin-top: 2px; }

/* ==========================================================================
   Why AI Experts
   ========================================================================== */
.why-grid {
  margin-top: 8px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: start;
}
@media (max-width: 860px) { .why-grid { grid-template-columns: 1fr; gap: 40px; } }

.credential-list { display: flex; flex-direction: column; gap: 0; margin-top: 8px; }
.credential-item {
  display: flex;
  gap: 16px;
  padding-block: 18px;
  border-top: 1px solid var(--border-soft);
  font-size: 15px;
  color: var(--text-dim);
  line-height: 1.6;
}
.credential-item:last-child { border-bottom: 1px solid var(--border-soft); }
.credential-item__mark { font-family: var(--font-mono); color: var(--accent); flex-shrink: 0; }

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq-list {
  margin-top: 48px;
  max-width: 760px;
}
.faq-item {
  border-top: 1px solid var(--border-soft);
}
.faq-item:last-child { border-bottom: 1px solid var(--border-soft); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding-block: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 16.5px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item__icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  position: relative;
}
.faq-item__icon::before, .faq-item__icon::after {
  content: '';
  position: absolute;
  background: var(--accent);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
.faq-item__icon::before { width: 12px; height: 1.5px; }
.faq-item__icon::after { width: 1.5px; height: 12px; transition: transform 0.2s ease, opacity 0.2s ease; }
.faq-item[open] .faq-item__icon::after { opacity: 0; transform: translate(-50%, -50%) rotate(90deg); }
.faq-item__body {
  padding-bottom: 24px;
  color: var(--text-dim);
  font-size: 15.5px;
  line-height: 1.75;
  max-width: 640px;
}

/* ==========================================================================
   Final CTA
   ========================================================================== */
.final-cta {
  text-align: center;
  padding-block: 100px;
  background:
    radial-gradient(ellipse 700px 400px at 50% 0%, rgba(201, 161, 90, 0.14), transparent 65%),
    var(--bg-alt);
  border-top: 1px solid var(--border);
}
.final-cta__title {
  font-family: var(--font-display);
  font-size: clamp(30px, 4.4vw, 46px);
  font-weight: 600;
  line-height: 1.15;
  max-width: 640px;
  margin-inline: auto;
}
.final-cta__sub {
  margin-top: 18px;
  color: var(--text-dim);
  font-size: 17px;
  max-width: 480px;
  margin-inline: auto;
}
.final-cta__actions { margin-top: 36px; display: flex; justify-content: center; }
.final-cta__note { margin-top: 20px; font-family: var(--font-mono); font-size: 12.5px; color: var(--text-faint); }

/* ==========================================================================
   Footer
   ========================================================================== */
.footer { padding-block: 56px 32px; border-top: 1px solid var(--border); }
.footer__top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 40px;
  padding-bottom: 40px;
}
.footer__brand { display: flex; align-items: center; gap: 10px; }
.footer__brand img { height: 24px; width: auto; }
.footer__tagline { margin-top: 12px; font-size: 14px; color: var(--text-faint); max-width: 260px; }
.footer__cols { display: flex; gap: 64px; flex-wrap: wrap; }
.footer__col-title {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 14px;
}
.footer__col a, .footer__col span {
  display: block;
  font-size: 14.5px;
  color: var(--text-dim);
  margin-bottom: 10px;
}
.footer__col a:hover { color: var(--accent-strong); }
.footer__bottom {
  padding-top: 28px;
  border-top: 1px solid var(--border-soft);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
}
.footer__bottom a { color: var(--text-faint); }
.footer__bottom a:hover { color: var(--accent-strong); }

/* ==========================================================================
   Scroll reveal
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ==========================================================================
   Legal pages
   ========================================================================== */
.legal { padding-block: 64px 100px; }
.legal h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 4vw, 42px);
  font-weight: 600;
}
.legal .legal__updated { margin-top: 10px; }
.legal h2 {
  font-family: var(--font-body);
  font-size: 19px;
  font-weight: 700;
  margin-top: 44px;
  margin-bottom: 14px;
}
.legal p, .legal li { color: var(--text-dim); font-size: 15.5px; line-height: 1.75; }
.legal ul { margin-top: 10px; padding-left: 20px; list-style: disc; }
.legal li { margin-bottom: 8px; }
.legal a { color: var(--accent-strong); text-decoration: underline; text-underline-offset: 2px; }
.legal__back { margin-top: 48px; display: inline-block; font-family: var(--font-mono); font-size: 13px; color: var(--text-dim); }