@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --neutral-0: #FFFFFF;
  --neutral-50: #F6F6F7;
  --neutral-400: #96999F;
  --neutral-500: #6E7178;
  --neutral-700: #3A3B40;
  --neutral-800: #26272B;
  --neutral-900: #161619;
  --neutral-950: #0A0A0C;
  --neutral-ink: #030303;

  --primary-300: #8AB4FF;
  --primary-400: #548CFF;
  --primary-500: #2E66F5;

  --gold: #B0895A;

  --color-bg: var(--neutral-ink);
  --color-bg-subtle: var(--neutral-950);
  --color-surface: var(--neutral-900);
  --color-surface-raised: var(--neutral-800);
  --color-border: var(--neutral-800);
  --color-border-strong: var(--neutral-700);

  --color-text: var(--neutral-50);
  --color-text-muted: var(--neutral-400);
  --color-text-subtle: var(--neutral-500);

  --color-primary: var(--primary-400);
  --color-primary-hover: var(--primary-300);

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", Menlo, monospace;

  --container: 1180px;
  --radius-lg: 8px;
  --radius-md: 6px;

  --ease-entrance: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);

  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }

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

.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: absolute; left: 16px; top: -120%;
  z-index: 200; background: var(--color-surface);
  padding: 10px 16px; border-radius: var(--radius-md);
  border: 1px solid var(--color-border-strong);
}
.skip-link:focus { top: 16px; }

.wrap {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 20px;
}
@media (min-width: 720px) { .wrap { padding-inline: 40px; } }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
}
.eyebrow .idx { color: var(--gold); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--color-border);
  background: color-mix(in srgb, var(--color-bg) 82%, transparent);
  backdrop-filter: blur(10px);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
}
.brand-mark { height: 30px; width: auto; }
.brand-word {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1875rem;
  letter-spacing: -0.012em;
  line-height: 1;
  color: var(--color-text);
}
.brand-word .core { color: var(--gold); }
.nav {
  display: none;
  align-items: center;
  gap: 30px;
  margin-left: auto;
}
.nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color 120ms ease;
}
.nav a {
  position: relative;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 200ms var(--ease-standard);
}
.nav a:hover { color: var(--color-text); }
.nav a:hover::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: 12px; }
@media (min-width: 900px) {
  .nav { display: flex; }
}

.menu-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
@media (min-width: 900px) { .menu-toggle { display: none; } }

.mobile-nav {
  display: none;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}
.mobile-nav.open { display: block; }
.mobile-nav a {
  display: block;
  padding: 14px 20px;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
}
.mobile-nav a:last-child { border-bottom: none; }
@media (min-width: 900px) { .mobile-nav { display: none !important; } }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: background 120ms ease, border-color 120ms ease, transform 75ms ease, color 120ms ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--color-primary);
  color: var(--neutral-ink);
  font-weight: 600;
}
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-gold {
  background: var(--gold);
  color: var(--neutral-ink);
  font-weight: 600;
}
.btn-gold:hover { background: color-mix(in srgb, var(--gold) 85%, #ffffff); }
.btn-ghost {
  background: transparent;
  border-color: var(--color-border-strong);
  color: var(--color-text);
}
.btn-ghost:hover { background: var(--color-surface); border-color: var(--neutral-500); }
.btn-lg { padding: 14px 22px; font-size: 0.9375rem; }
.btn .arrow { color: currentColor; }

.hero {
  position: relative;
  border-bottom: 1px solid var(--color-border);
  padding: 116px 0 80px;
  background-image:
    linear-gradient(180deg, rgba(3,3,3,0.55) 0%, rgba(3,3,3,0.2) 40%, rgba(3,3,3,0.78) 100%),
    linear-gradient(100deg, rgba(3,3,3,0.96) 28%, rgba(3,3,3,0.78) 60%, rgba(3,3,3,0.5) 100%),
    url('assets/images/london-hero.jpg');
  background-size: cover;
  background-position: center right;
  background-repeat: no-repeat;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  margin-bottom: 30px;
}
.hero-eyebrow .idx { color: var(--gold); }
.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  max-width: 18ch;
  color: var(--color-text);
}
.hero-foot {
  margin-top: 52px;
  padding-top: 34px;
  border-top: 1px solid var(--color-border-strong);
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
@media (min-width: 860px) {
  .hero-foot {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 64px;
  }
}
.hero .lede {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  line-height: 1.55;
  color: var(--color-text-muted);
  max-width: 46ch;
  margin: 0;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

#philosophy {
  position: relative;
  background-image:
    linear-gradient(180deg, rgba(3,3,3,0.9) 0%, rgba(3,3,3,0.87) 55%, rgba(3,3,3,0.9) 100%),
    url('assets/images/philosophy-bg.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

.section { padding: 76px 0; border-bottom: 1px solid var(--color-border); }
.section-head { max-width: 62ch; }
.section-head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.875rem, 3.5vw, 2.5rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-top: 16px;
  color: var(--color-text);
}
.section-head p {
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text-muted);
  margin-top: 20px;
}
.section-head p + p { margin-top: 16px; }

.intro {
  padding: 64px 0;
  border-bottom: 1px solid var(--color-border);
}
.intro p {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.375rem, 3vw, 1.875rem);
  line-height: 1.4;
  letter-spacing: -0.015em;
  max-width: 30ch;
  color: var(--color-text);
}

.split-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
@media (min-width: 860px) {
  .split-grid {
    grid-template-columns: 0.82fr 1.18fr;
    gap: 72px;
    align-items: start;
  }
}
.split-head h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.875rem, 3.5vw, 2.5rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--color-text);
  max-width: 14ch;
}
.split-head p {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text-muted);
  margin-top: 20px;
  max-width: 34ch;
}
.split-body p {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}
.split-body p + p { margin-top: 18px; }
@media (min-width: 860px) {
  .why-split .split-head { position: sticky; top: 96px; }
}

.principle-list {
  list-style: none;
  padding: 0;
  margin-top: 44px;
  border-top: 1px solid var(--color-border);
}
.principle-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px 40px;
  padding: 28px 0;
  border-bottom: 1px solid var(--color-border);
}
@media (min-width: 760px) {
  .principle-row {
    grid-template-columns: 300px 1fr;
    align-items: baseline;
    padding: 30px 0;
  }
}
.pr-index {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  color: var(--gold);
}
.pr-title h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  color: var(--color-text);
}
.principle-row > p {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text-muted);
}

.focus-rows {
  margin-top: 44px;
  border-top: 1px solid var(--color-border);
}
.focus-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: 40px 0;
  border-bottom: 1px solid var(--color-border);
}
@media (min-width: 820px) {
  .focus-row {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 56px;
    align-items: start;
  }
}
.focus-row h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  letter-spacing: -0.02em;
  color: var(--color-text);
}
.focus-row p {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.why-list { display: flex; flex-direction: column; }
.why-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 22px;
  align-items: start;
  padding: 26px 0;
  border-top: 1px solid var(--color-border);
}
.why-row:first-child { border-top: none; padding-top: 0; }
.why-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  color: var(--gold);
  background: var(--color-surface);
  transition: border-color 200ms var(--ease-standard), color 200ms var(--ease-standard), transform 200ms var(--ease-standard);
}
.why-icon svg { width: 22px; height: 22px; }
.why-row:hover .why-icon {
  border-color: var(--gold);
  transform: translateY(-2px);
}
.why-row h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.3125rem;
  letter-spacing: -0.01em;
  color: var(--color-text);
}
.why-row p {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin-top: 10px;
  max-width: 60ch;
}

/* Scroll + entrance reveals */
@media (prefers-reduced-motion: no-preference) {
  [data-reveal] {
    opacity: 0;
    transform: translateY(20px);
    transition:
      opacity 0.7s var(--ease-entrance),
      transform 0.7s var(--ease-entrance);
    transition-delay: var(--reveal-delay, 0ms);
    will-change: opacity, transform;
  }
  [data-reveal].in {
    opacity: 1;
    transform: none;
  }
}

.hero .btn-gold .arrow {
  transition: transform 200ms var(--ease-standard);
}
.hero .btn-gold:hover .arrow { transform: translateX(4px); }

.focus-row, .principle-row { transition: background-color 200ms var(--ease-standard); }

.cta {
  position: relative;
  padding: 120px 0;
  border-bottom: 1px solid var(--color-border);
  background-image:
    linear-gradient(80deg, rgba(3,3,3,0.95) 34%, rgba(3,3,3,0.7) 66%, rgba(3,3,3,0.5) 100%),
    url('assets/images/london-cta.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.cta h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2rem, 4.5vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
  max-width: 16ch;
  color: var(--color-text);
}
.cta p {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  max-width: 46ch;
  margin-top: 20px;
}
.cta-contact {
  margin-top: 36px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.cta-contact .label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
}
.cta-contact a.email {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.375rem, 3vw, 1.875rem);
  letter-spacing: -0.02em;
  color: var(--color-text);
  transition: color 120ms ease;
  width: fit-content;
}
.cta-contact a.email:hover { color: var(--color-primary); }

.site-footer {
  padding: 72px 0 36px;
  border-top: 1px solid var(--color-border);
}
.footer-main {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
}
@media (min-width: 760px) {
  .footer-main {
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
  }
}
.footer-brand .brand { margin-bottom: 20px; }
.footer-brand .tagline {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  max-width: 32ch;
}
.footer-brand .footer-meta {
  margin-top: 14px;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
}
.footer-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-col-label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  margin-bottom: 4px;
}
.footer-col-label .idx { color: var(--gold); }
.footer-col a {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  width: fit-content;
  transition: color 120ms ease;
}
.footer-col a:hover { color: var(--color-text); }
.footer-bottom {
  margin-top: 52px;
  padding-top: 22px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  color: var(--color-text-subtle);
}
.footer-bottom a {
  color: var(--color-text-muted);
  transition: color 120ms ease;
}
.footer-bottom a:hover { color: var(--color-text); }

.legal-hero {
  padding: 84px 0 40px;
  border-bottom: 1px solid var(--color-border);
}
.legal-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--color-text);
  max-width: 18ch;
}
.legal-body { padding: 52px 0 88px; }
.prose { max-width: 74ch; }
.prose p {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--color-text-muted);
}
.prose p + p { margin-top: 18px; }
.prose h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.5rem;
  letter-spacing: -0.015em;
  color: var(--color-text);
  margin-top: 48px;
}
.prose h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin-top: 28px;
}
.prose h2 + p,
.prose h3 + p { margin-top: 14px; }
.prose ul {
  list-style: none;
  padding: 0;
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.prose li {
  position: relative;
  padding-left: 24px;
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 1px;
  background: var(--gold);
}
.prose ul + p { margin-top: 18px; }

.cookie {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 300;
  max-width: 440px;
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border-strong);
  border-radius: 10px;
  box-shadow: 0 24px 48px -12px rgb(0 0 0 / 0.6);
  padding: 22px 22px 20px;
  transform: translateY(12px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms ease, transform 220ms ease;
}
.cookie.show { transform: translateY(0); opacity: 1; pointer-events: auto; }
@media (min-width: 520px) { .cookie { left: auto; right: 24px; bottom: 24px; } }
.cookie .eyebrow { margin-bottom: 12px; display: block; }
.cookie h4 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  color: var(--color-text);
}
.cookie p {
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--color-text-muted);
  margin-top: 8px;
}
.cookie-actions {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}
.cookie-actions .btn { padding: 9px 16px; font-size: 0.8125rem; }

.error-page {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}
.error-body {
  flex: 1;
  display: flex;
  align-items: center;
  padding: 80px 0;
}
.error-body .code {
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  color: var(--gold);
}
.error-body h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3rem, 12vw, 7rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin-top: 18px;
  color: var(--color-text);
}
.error-body p {
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  max-width: 46ch;
  margin-top: 20px;
}
.error-body .hero-actions { margin-top: 34px; }