/* ============================================================
   DTC Core Co — Design System
   Light-first, editorial, high-tech premium.
   See /DESIGN.md for the canonical spec.
   ============================================================ */

/* ── Tokens ─────────────────────────────────────────────────── */
:root {
  /* Ink */
  --ink-900: #0B0B0E;
  --ink-700: #1F1F24;
  --ink-500: #4A4A52;
  --ink-400: #72727B;
  --ink-300: #A6A6AD;

  /* Paper */
  --paper: #FBFAF7;
  --paper-soft: #F4F3EE;
  --surface: #FFFFFF;
  --surface-raised: #FEFEFC;

  /* Line */
  --line: #E8E6DF;
  --line-strong: #D8D5CB;

  /* Signal */
  --indigo: #4F46E5;
  --indigo-700: #3F37C7;
  --indigo-tint: rgba(79, 70, 229, 0.08);
  --indigo-ring: rgba(79, 70, 229, 0.18);
  --teal: #0E8A7F;
  --amber: #B45309;

  /* Typography — CJK fallbacks in cascade so zh/ja/ko glyphs render via Noto when Google Fonts serves them per page */
  --font-display: "Instrument Serif", "Noto Serif SC", "Noto Serif JP", "Noto Serif KR", ui-serif, Georgia, "Times New Roman", serif;
  --font-sans: "Geist", "Noto Sans SC", "Noto Sans JP", "Noto Sans KR", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  /* Radius */
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;

  /* Shadows */
  --shadow-1: 0 1px 2px rgba(11, 11, 14, 0.04);
  --shadow-2: 0 4px 16px rgba(11, 11, 14, 0.06);
  --shadow-3: 0 12px 40px rgba(11, 11, 14, 0.10);
  --shadow-4: 0 24px 64px rgba(11, 11, 14, 0.14);

  /* Motion */
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 0.15s;
  --dur-base: 0.25s;
  --dur-slow: 0.45s;

  /* Layout */
  --container-max: 1200px;
  --container-pad: clamp(20px, 5vw, 40px);
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
}
html, body { min-height: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink-700);
  background: var(--paper);
  letter-spacing: -0.005em;
  font-feature-settings: "ss01", "cv11";
}
img, svg, video { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
hr { border: none; height: 1px; background: var(--line); margin: 0; }

/* ── Container ──────────────────────────────────────────────── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}

/* ── Typography utilities ──────────────────────────────────── */
h1, h2, h3, h4, h5, h6 { margin: 0; color: var(--ink-900); }

.display-1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(40px, 7vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.025em;
  color: var(--ink-900);
}
.display-2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(36px, 5.5vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--ink-900);
}
.h2 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(28px, 3.5vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}
.h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 22px;
  line-height: 1.3;
  letter-spacing: -0.015em;
  color: var(--ink-900);
}
@media (min-width: 720px) {
  .h3 { font-size: 24px; }
}
.h4 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}
@media (min-width: 720px) {
  .h4 { font-size: 18px; }
}

.lead {
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.5;
  color: var(--ink-500);
  max-width: 62ch;
  font-weight: 400;
}
.muted { color: var(--ink-500); }
.micro { color: var(--ink-400); font-size: 13px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 12px;
  line-height: 1;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-500);
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--indigo);
  display: inline-block;
}

.mono {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0;
  font-feature-settings: "zero", "ss01";
}

/* Paragraphs and prose */
p { margin: 0 0 1em; max-width: 65ch; }
p:last-child { margin-bottom: 0; }

/* Inline links — Stripe-style ink underline */
.prose a,
.surface a:not(.btn):not(.btn-accent):not(.btn-ghost):not(.link-indigo),
.service-card-link,
p a:not(.btn):not(.btn-accent):not(.btn-ghost):not(.link-indigo) {
  color: var(--ink-900);
  border-bottom: 1px solid var(--ink-300);
  transition: border-color var(--dur-fast) var(--ease);
}
.prose a:hover,
.surface a:not(.btn):not(.btn-accent):not(.btn-ghost):not(.link-indigo):hover,
p a:not(.btn):not(.btn-accent):not(.btn-ghost):not(.link-indigo):hover {
  border-bottom-color: var(--ink-900);
}
.link-indigo {
  color: var(--indigo);
  border-bottom: 1px solid var(--indigo-tint);
  transition: border-color var(--dur-fast) var(--ease);
}
.link-indigo:hover { border-bottom-color: var(--indigo); }

/* ── Skip link ──────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 12px;
  padding: 10px 16px;
  background: var(--ink-900);
  color: var(--paper);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  z-index: 999;
}
.skip-link:focus { left: 16px; }

/* ── Buttons ────────────────────────────────────────────────── */
.btn,
.btn-accent,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 22px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.01em;
  line-height: 1;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  transition:
    background-color var(--dur-base) var(--ease),
    border-color var(--dur-base) var(--ease),
    color var(--dur-base) var(--ease),
    transform var(--dur-base) var(--ease),
    box-shadow var(--dur-base) var(--ease);
}
.btn {
  background: var(--ink-900);
  color: var(--paper);
}
.btn:hover {
  background: #1a1a20;
  transform: translateY(-1px);
  box-shadow: var(--shadow-2);
  color: var(--paper);
}
.btn:active { transform: translateY(0); }

.btn-accent {
  background: var(--indigo);
  color: #fff;
}
.btn-accent:hover {
  background: var(--indigo-700);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.22);
  color: #fff;
}
.btn-accent:active { transform: translateY(0); }

.btn-ghost {
  background: transparent;
  color: var(--ink-900);
  border-color: var(--line-strong);
}
.btn-ghost:hover {
  background: var(--paper-soft);
  border-color: var(--ink-700);
}

.btn-sm,
.btn-accent.btn-sm,
.btn-ghost.btn-sm {
  height: 38px;
  padding: 0 16px;
  font-size: 14px;
}

.btn:focus-visible,
.btn-accent:focus-visible,
.btn-ghost:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px var(--indigo-ring);
}

.btn-arrow::after {
  content: "→";
  display: inline-block;
  transition: transform var(--dur-base) var(--ease);
  margin-left: 2px;
}
.btn-arrow:hover::after { transform: translateX(3px); }

/* ── Surface/Card ───────────────────────────────────────────── */
.surface {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  transition:
    transform var(--dur-base) var(--ease),
    box-shadow var(--dur-base) var(--ease),
    border-color var(--dur-base) var(--ease);
  box-shadow: var(--shadow-1);
}
.surface-hover:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
  border-color: var(--line-strong);
}
.surface-soft {
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
}
.surface-flush {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  padding: 28px 0;
}

/* ── Header ─────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 250, 247, 0.78);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-base) var(--ease), background-color var(--dur-base) var(--ease);
}
.site-header.scrolled {
  border-bottom-color: var(--line);
  background: rgba(251, 250, 247, 0.92);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}
.brand:hover { color: var(--ink-900); }
.brand-mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--ink-900);
  display: inline-grid;
  place-items: center;
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1;
  font-weight: 400;
  position: relative;
}
.brand-mark::after {
  content: "D";
  display: block;
  transform: translateY(1px);
}
.brand-mark::before {
  content: "";
  position: absolute;
  right: 4px;
  bottom: 4px;
  width: 6px;
  height: 2px;
  border-radius: 1px;
  background: var(--indigo);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.site-nav a:not(.btn):not(.btn-accent):not(.btn-ghost) {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-500);
  transition:
    background-color var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease);
}
.site-nav a:not(.btn):not(.btn-accent):not(.btn-ghost):hover,
.site-nav a.active:not(.btn):not(.btn-accent):not(.btn-ghost) {
  color: var(--ink-900);
  background: rgba(11, 11, 14, 0.04);
}
.site-nav a.active:not(.btn):not(.btn-accent):not(.btn-ghost) { font-weight: 600; }
.site-nav .btn,
.site-nav .btn-accent {
  margin-left: 6px;
}

/* ── Language switcher ──────────────────────────────────────── */
.lang-switcher {
  position: relative;
  display: inline-flex;
  margin-left: 4px;
}
.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 36px;
  padding: 0 10px 0 12px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink-700);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: -0.005em;
  cursor: pointer;
  transition:
    border-color var(--dur-fast) var(--ease),
    background-color var(--dur-fast) var(--ease);
}
.lang-btn:hover {
  border-color: var(--line-strong);
  background: var(--paper-soft);
  color: var(--ink-900);
}
.lang-btn .globe,
.lang-btn .chev {
  flex-shrink: 0;
  stroke: currentColor;
}
.lang-btn .chev {
  transition: transform var(--dur-fast) var(--ease);
}
.lang-btn[aria-expanded="true"] .chev { transform: rotate(180deg); }

.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 180px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-3);
  padding: 4px;
  display: none;
  z-index: 60;
}
.lang-switcher.open .lang-menu { display: block; }

/* Target menu items specifically so parent .site-nav a rules don't apply */
.lang-menu a,
.site-nav .lang-menu a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: auto;
  padding: 10px 14px;
  border-radius: 6px;
  color: var(--ink-700);
  background: transparent;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.005em;
  transition: background-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.lang-menu a:hover,
.site-nav .lang-menu a:hover {
  background: var(--paper-soft);
  color: var(--ink-900);
}
.lang-menu a.active,
.site-nav .lang-menu a.active {
  background: var(--paper-soft);
  color: var(--ink-900);
  font-weight: 600;
}
.lang-menu a .code {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-400);
  letter-spacing: 0;
  text-transform: uppercase;
}
.lang-menu a.active .code { color: var(--indigo); }

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  align-items: center;
  justify-content: center;
  position: relative;
}
.nav-toggle:hover { border-color: var(--line-strong); }
.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--ink-900);
  border-radius: 1px;
  position: absolute;
  left: 50%;
  transform: translate(-50%, 0);
  transition: transform var(--dur-base) var(--ease), opacity var(--dur-fast) var(--ease);
}
.nav-toggle span:nth-child(1) { top: 14px; }
.nav-toggle span:nth-child(2) { top: 19px; }
.nav-toggle span:nth-child(3) { top: 24px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translate(-50%, 5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translate(-50%, -5px) rotate(-45deg);
}

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  position: relative;
  padding: 96px 0 120px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 40% at 80% 10%, rgba(79, 70, 229, 0.06), transparent 70%),
    radial-gradient(40% 30% at 5% 90%, rgba(14, 138, 127, 0.04), transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.hero > .container { position: relative; z-index: 1; }

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 64px;
  align-items: end;
}
.hero-copy { max-width: 720px; }
.hero h1 {
  margin: 18px 0 24px;
}
.hero .lead { margin-bottom: 36px; max-width: 58ch; }
.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.hero-meta {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.hero-meta-item .k {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 15px;
  color: var(--ink-900);
  letter-spacing: 0;
}
.hero-meta-item .d {
  font-size: 13px;
  color: var(--ink-500);
}

.hero-info {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-2);
  position: relative;
}
.hero-info::before {
  content: "";
  position: absolute;
  top: 24px;
  right: 24px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--indigo);
  box-shadow: 0 0 0 4px var(--indigo-tint);
}
.hero-info h2 {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-500);
  margin-bottom: 20px;
}
.info-row {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}
.info-row:last-of-type { border-bottom: none; }
.info-row .label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-400);
}
.info-row .value {
  font-size: 15px;
  color: var(--ink-900);
  letter-spacing: -0.01em;
}
.info-row .value a { color: var(--ink-900); }

/* ── Sections ───────────────────────────────────────────────── */
.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }
.section-alt { background: var(--paper-soft); }

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 48px;
  align-items: end;
  margin-bottom: 56px;
}
.section-head .eyebrow { margin-bottom: 16px; }
.section-head h2 { margin-bottom: 0; }
.section-head p.lead { margin-top: 12px; }
.section-head-meta {
  color: var(--ink-500);
  font-size: 15px;
  line-height: 1.55;
  max-width: 38ch;
}

/* ── Logo/Trust strip ───────────────────────────────────────── */
.trust-strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 32px 0;
  background: var(--paper);
}
.trust-row {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: space-between;
}
.trust-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-400);
}
.trust-items {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  align-items: center;
}
.trust-item {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-500);
  letter-spacing: -0.01em;
}

/* ── Service feature split ──────────────────────────────────── */
.feature-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
}
.feature-grid .feature-item {
  background: var(--surface);
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  transition: background-color var(--dur-base) var(--ease);
}
.feature-grid .feature-item:hover { background: var(--surface-raised); }
.feature-grid .feature-item .index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-400);
  letter-spacing: 0;
}
.feature-grid .feature-item h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: -0.015em;
  color: var(--ink-900);
}
.feature-grid .feature-item p {
  color: var(--ink-500);
  font-size: 15px;
  line-height: 1.6;
  max-width: 46ch;
  margin: 0;
}
.feature-grid .feature-item ul {
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 6px;
}
.feature-grid .feature-item li {
  font-size: 14px;
  color: var(--ink-700);
  padding-left: 18px;
  position: relative;
}
.feature-grid .feature-item li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 1px;
  background: var(--indigo);
}
.feature-grid-2 { grid-template-columns: repeat(2, 1fr); }
.feature-grid-3 { grid-template-columns: repeat(3, 1fr); }

/* Service section with text-left, detail-right */
.service-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 64px;
  padding: 56px 0;
  border-top: 1px solid var(--line);
}
.service-split:first-of-type { border-top: none; padding-top: 0; }
.service-split .service-intro .eyebrow { margin-bottom: 20px; }
.service-split .service-intro h3 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(28px, 3vw, 36px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink-900);
  margin-bottom: 16px;
}
.service-split .service-intro p {
  color: var(--ink-500);
  font-size: 17px;
  line-height: 1.6;
  max-width: 42ch;
}
.service-split .service-detail {
  display: grid;
  gap: 24px;
}
.service-split .service-capability {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}
.service-split .service-capability:last-child { border-bottom: none; }
.service-split .service-capability .cap-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-400);
  padding-top: 4px;
  min-width: 32px;
}
.service-split .service-capability h4 {
  margin: 0 0 6px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 17px;
  color: var(--ink-900);
  letter-spacing: -0.01em;
}
.service-split .service-capability p {
  margin: 0;
  color: var(--ink-500);
  font-size: 15px;
  line-height: 1.55;
  max-width: none;
}

/* ── Process / steps ────────────────────────────────────────── */
.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.process-step {
  padding: 36px 28px;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.process-step:last-child { border-right: none; }
.process-step .num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--indigo);
  letter-spacing: 0;
  font-weight: 500;
}
.process-step h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 18px;
  color: var(--ink-900);
  letter-spacing: -0.01em;
}
.process-step p {
  color: var(--ink-500);
  font-size: 14px;
  line-height: 1.55;
  margin: 0;
  max-width: none;
}

/* ── Stat row (light, tinted, not dark) ─────────────────────── */
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 8px;
}
.stat-cell {
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-right: 1px solid var(--line);
}
.stat-cell:last-child { border-right: none; }
.stat-cell .k {
  font-family: var(--font-display);
  font-size: clamp(32px, 3.5vw, 44px);
  font-weight: 400;
  line-height: 1;
  color: var(--ink-900);
  letter-spacing: -0.02em;
}
.stat-cell .k-mono {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(26px, 3vw, 32px);
  line-height: 1;
  color: var(--ink-900);
  letter-spacing: -0.01em;
}
.stat-cell .d {
  font-size: 13px;
  color: var(--ink-500);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 600;
}
.stat-cell p {
  font-size: 13px;
  color: var(--ink-500);
  line-height: 1.5;
  margin: 4px 0 0;
  max-width: none;
}

/* ── Industries ─────────────────────────────────────────────── */
.industries {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.industry {
  background: var(--surface);
  padding: 28px 28px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: background-color var(--dur-base) var(--ease);
}
.industry:hover { background: var(--paper-soft); }
.industry h4 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 16px;
  color: var(--ink-900);
  letter-spacing: -0.01em;
}
.industry p {
  font-size: 14px;
  color: var(--ink-500);
  line-height: 1.5;
  margin: 0;
  max-width: none;
}

/* ── Integrations ───────────────────────────────────────────── */
.integrations {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.integration-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-700);
  letter-spacing: -0.01em;
  transition: border-color var(--dur-fast) var(--ease), background-color var(--dur-fast) var(--ease);
}
.integration-chip:hover {
  border-color: var(--line-strong);
  background: var(--surface-raised);
}
.integration-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--indigo);
  opacity: 0.55;
}

/* ── Testimonial / quote block ──────────────────────────────── */
.quote-block {
  padding: 48px 40px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  display: grid;
  gap: 24px;
  max-width: 820px;
}
.quote-block blockquote {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(22px, 2.4vw, 28px);
  line-height: 1.35;
  letter-spacing: -0.015em;
  color: var(--ink-900);
}
.quote-block cite {
  font-style: normal;
  font-size: 14px;
  color: var(--ink-500);
  letter-spacing: -0.005em;
}

/* ── FAQ ────────────────────────────────────────────────────── */
.faq-list {
  border-top: 1px solid var(--line);
}
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-item summary {
  padding: 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  cursor: pointer;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 17px;
  color: var(--ink-900);
  letter-spacing: -0.01em;
  list-style: none;
  transition: color var(--dur-fast) var(--ease);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--indigo-700); }
.faq-item summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 20px;
  color: var(--ink-400);
  transition: transform var(--dur-base) var(--ease), color var(--dur-fast) var(--ease);
  min-width: 20px;
  text-align: right;
}
.faq-item[open] summary::after {
  content: "−";
  color: var(--indigo);
}
.faq-item[open] summary { color: var(--ink-900); }
.faq-item .faq-body {
  padding: 0 0 28px;
  color: var(--ink-500);
  font-size: 16px;
  line-height: 1.65;
  max-width: 68ch;
}

/* ── Contact grid ───────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.contact-cell {
  background: var(--surface);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.contact-cell h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-500);
  margin-bottom: 6px;
}
.contact-cell .contact-primary {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}
.contact-cell .contact-primary a { color: var(--ink-900); border-bottom: 1px solid var(--ink-300); }
.contact-cell .contact-primary a:hover { border-bottom-color: var(--ink-900); }
.contact-cell p {
  font-size: 14px;
  color: var(--ink-500);
  margin: 0;
  max-width: none;
}

/* ── Forms (SMS, contact) ───────────────────────────────────── */
.form {
  display: grid;
  gap: 16px;
}
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}
.field {
  display: grid;
  gap: 6px;
}
.field label,
.field > .label {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-700);
  letter-spacing: 0;
}
.field label .optional {
  color: var(--ink-400);
  font-weight: 500;
  margin-left: 4px;
}
.input,
.textarea,
.select {
  width: 100%;
  height: 48px;
  padding: 0 16px;
  background: var(--paper-soft);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--ink-900);
  transition:
    background-color var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease),
    box-shadow var(--dur-fast) var(--ease);
}
.textarea {
  height: auto;
  min-height: 130px;
  padding: 12px 16px;
  resize: vertical;
  line-height: 1.5;
}
.input::placeholder,
.textarea::placeholder { color: var(--ink-400); }
.input:focus,
.textarea:focus,
.select:focus {
  outline: none;
  background: var(--surface);
  border-color: var(--indigo);
  box-shadow: 0 0 0 4px var(--indigo-ring);
}
.field .hint {
  font-size: 12px;
  color: var(--ink-400);
  line-height: 1.45;
}

.checkbox-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  padding: 16px;
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  align-items: start;
}
.checkbox-row input[type="checkbox"] {
  width: 16px;
  height: 16px;
  margin-top: 3px;
  accent-color: var(--indigo);
}
.checkbox-row .check-text {
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-700);
}
.checkbox-row strong { color: var(--ink-900); font-weight: 600; }

.form-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.form-actions .form-note {
  font-size: 13px;
  color: var(--ink-500);
  max-width: 42ch;
}

/* Honeypot */
.hp {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: start;
}

/* ── Prose (about, privacy, terms) ──────────────────────────── */
.prose {
  max-width: 720px;
}
.prose h1 {
  margin-bottom: 24px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(36px, 5vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--ink-900);
}
.prose h2 {
  margin-top: 48px;
  margin-bottom: 16px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}
.prose h3 {
  margin-top: 32px;
  margin-bottom: 12px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}
.prose p {
  color: var(--ink-700);
  font-size: 17px;
  line-height: 1.7;
  margin-bottom: 1.1em;
  max-width: 65ch;
}
.prose ul, .prose ol {
  margin: 0 0 1.2em 1.2em;
  padding: 0;
  color: var(--ink-700);
  line-height: 1.75;
}
.prose li { margin-bottom: 0.4em; }
.prose li::marker { color: var(--ink-400); }
.prose strong { color: var(--ink-900); font-weight: 600; }
.prose hr { margin: 40px 0; }

/* Table of contents (legal pages) */
.toc {
  background: var(--paper-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  margin: 0 0 40px;
}
.toc h2 {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-500);
  margin: 0 0 12px;
}
.toc ol {
  margin: 0;
  padding-left: 20px;
  font-size: 14px;
  color: var(--ink-500);
}
.toc a {
  color: var(--ink-500);
  border-bottom: none;
}
.toc a:hover { color: var(--ink-900); }

/* ── Page header (sub-pages) ────────────────────────────────── */
.page-head {
  padding: 72px 0 48px;
  border-bottom: 1px solid var(--line);
}
.page-head .eyebrow { margin-bottom: 20px; }
.page-head h1 { margin-bottom: 24px; }
.page-head .lead { max-width: 60ch; }

/* ── Footer ─────────────────────────────────────────────────── */
.site-footer {
  padding: 64px 0 48px;
  border-top: 1px solid var(--line);
  background: var(--paper);
}
.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 18px;
  color: var(--ink-900);
  letter-spacing: -0.02em;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.footer-brand .brand-mark { width: 26px; height: 26px; font-size: 16px; }
.footer-brand .brand-mark::before { right: 3px; bottom: 3px; width: 5px; height: 2px; }
.footer-tagline {
  color: var(--ink-500);
  font-size: 14px;
  line-height: 1.55;
  max-width: 36ch;
  margin-bottom: 16px;
}
.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-400);
  margin-bottom: 16px;
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}
.footer-col a {
  color: var(--ink-500);
  font-size: 14px;
  transition: color var(--dur-fast) var(--ease);
}
.footer-col a:hover { color: var(--ink-900); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.footer-meta {
  font-size: 13px;
  color: var(--ink-400);
}
.footer-meta a { color: var(--ink-500); }
.footer-meta a:hover { color: var(--ink-900); }
.footer-legal {
  display: flex;
  gap: 20px;
}
.footer-legal a {
  font-size: 13px;
  color: var(--ink-400);
}
.footer-legal a:hover { color: var(--ink-900); }

/* ── Scroll reveal ──────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}
.reveal-stagger.visible > * {
  opacity: 1;
  transform: translateY(0);
}
.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0s; }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 0.06s; }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 0.12s; }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: 0.18s; }
.reveal-stagger.visible > *:nth-child(5) { transition-delay: 0.24s; }
.reveal-stagger.visible > *:nth-child(6) { transition-delay: 0.30s; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1023px) {
  .hero-layout { grid-template-columns: 1fr; gap: 48px; }
  .hero-info { max-width: 560px; }
  .feature-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(2, 1fr); }
  .process-step { border-right: none; border-bottom: 1px solid var(--line); }
  .process-step:nth-child(odd) { border-right: 1px solid var(--line); }
  .process-step:nth-last-child(-n+2) { border-bottom: none; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .stat-cell { border-right: none; border-bottom: 1px solid var(--line); }
  .stat-cell:nth-child(odd) { border-right: 1px solid var(--line); }
  .stat-cell:nth-last-child(-n+2) { border-bottom: none; }
  .industries { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .section-head { grid-template-columns: 1fr; gap: 20px; }
  .service-split { grid-template-columns: 1fr; gap: 32px; }
  .footer-top { grid-template-columns: 1.6fr 1fr 1fr; }
  .form-grid-2 { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .hero { padding: 64px 0 80px; }
  .section { padding: 64px 0; }
  .section-sm { padding: 48px 0; }
  .page-head { padding: 56px 0 36px; }
  .hero-cta { gap: 10px; }
  .hero-meta { gap: 20px; padding-top: 24px; }
  .feature-grid-2,
  .feature-grid-3 { grid-template-columns: 1fr; }
  .feature-grid .feature-item { padding: 32px 24px; }
  .process { grid-template-columns: 1fr; }
  .process-step {
    border-right: none !important;
    border-bottom: 1px solid var(--line);
    padding: 28px 24px;
  }
  .process-step:last-child { border-bottom: none; }
  .stat-row { grid-template-columns: 1fr; }
  .stat-cell {
    border-right: none !important;
    border-bottom: 1px solid var(--line);
    padding: 24px;
  }
  .stat-cell:last-child { border-bottom: none; }
  .industries { grid-template-columns: 1fr; }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
    margin-bottom: 32px;
  }
  .footer-bottom { align-items: flex-start; flex-direction: column; }
  .site-header .site-nav { display: none; }
  .site-header .site-nav.open {
    display: flex;
    position: fixed;
    inset: 72px 16px auto 16px;
    flex-direction: column;
    align-items: stretch;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 12px;
    box-shadow: var(--shadow-3);
    gap: 4px;
    z-index: 60;
  }
  .site-header .site-nav.open a:not(.btn):not(.btn-accent):not(.btn-ghost) {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    border-radius: var(--radius-sm);
    height: auto;
  }
  .site-header .site-nav.open .btn,
  .site-header .site-nav.open .btn-accent,
  .site-header .site-nav.open .btn-ghost {
    margin-left: 0;
    margin-top: 4px;
    width: 100%;
  }
  .site-header .site-nav.open .lang-switcher {
    margin-left: 0;
    margin-top: 4px;
    width: 100%;
  }
  .site-header .site-nav.open .lang-btn {
    width: 100%;
    justify-content: flex-start;
    height: 44px;
    padding: 0 14px;
    font-size: 15px;
  }
  .site-header .site-nav.open .lang-menu {
    position: static;
    width: 100%;
    margin-top: 6px;
    box-shadow: none;
  }
  .nav-toggle { display: inline-flex; }
  .service-split .service-capability { grid-template-columns: 1fr; gap: 4px; }
  .service-split .service-capability .cap-num { padding-top: 0; }
}

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

/* ── Print ──────────────────────────────────────────────────── */
@media print {
  .site-header, .site-footer, .skip-link, .nav-toggle { display: none; }
  body { background: #fff; color: #000; }
  .surface, .surface-soft, .feature-grid, .industries, .contact-grid {
    border-color: #ccc;
    box-shadow: none;
  }
}

/* ── Selection ──────────────────────────────────────────────── */
::selection {
  background: var(--indigo-tint);
  color: var(--ink-900);
}

/* ── Focus visible baseline ─────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--indigo);
  outline-offset: 2px;
  border-radius: 4px;
}
.btn:focus-visible,
.btn-accent:focus-visible,
.btn-ghost:focus-visible {
  outline: none;
}