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

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

:root {
  --color-bg: #FFFFFF;
  --color-text: #0A0A0A;
  --color-muted: #6B7280;
  --color-accent: #4F46E5;
  --color-accent-light: #EEF2FF;
  --color-border: #E5E7EB;
  --color-surface: #F9FAFB;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1200px;
  --nav-height: 72px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Navigation ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: var(--nav-height);
  display: flex;
  align-items: center;
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 48px;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--color-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.15s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
}

/* ── Container ── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 48px;
}

/* ── Pill tag ── */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 28px;
}

/* ── Hero ── */
.hero {
  padding: 120px 0 96px;
  text-align: center;
}

.hero .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero h1 {
  font-size: clamp(3rem, 6.5vw, 5.25rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 24px;
}

.hero-tagline {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  color: var(--color-muted);
  font-weight: 400;
  margin-bottom: 28px;
  max-width: 640px;
  line-height: 1.5;
  font-style: italic;
}

.hero-bio {
  font-size: 1.0625rem;
  color: var(--color-muted);
  max-width: 580px;
  line-height: 1.75;
  margin-bottom: 48px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 8px;
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.15s ease;
  cursor: pointer;
  border: none;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--color-text);
  color: #fff;
}

.btn-primary:hover {
  background: #222;
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: #9CA3AF;
}

/* ── Section ── */
.section {
  padding: 96px 0;
}

.section + .section {
  border-top: 1px solid var(--color-border);
}

hr.divider {
  border: none;
  border-top: 1px solid var(--color-border);
}

.section-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-muted);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.625rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.0625rem;
  color: var(--color-muted);
  max-width: 540px;
  line-height: 1.75;
  margin-bottom: 60px;
}

/* ── Research capability cards ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 36px 32px;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}

.card:hover {
  border-color: #D1D5DB;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--color-accent-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  font-size: 1.375rem;
}

.card-title {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}

.card-text {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.7;
}

/* ── Case study cards ── */
.case-study-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.case-study-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}

.case-study-card:hover {
  border-color: #D1D5DB;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
  transform: translateY(-3px);
}

.case-study-img {
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  overflow: hidden;
}

.case-study-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.case-study-img.marketplace-bg {
  background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
}

.case-study-img.payroll-bg {
  background: linear-gradient(135deg, #F0FDF4 0%, #DCFCE7 100%);
}

.case-study-body {
  padding: 28px 32px 32px;
}

.case-study-company {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.case-study-name {
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 10px;
}

.case-study-desc {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.65;
  margin-bottom: 22px;
}

.tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  background: var(--color-border);
  border-radius: 100px;
  color: var(--color-muted);
}

/* ── Design teaser (home) ── */
.design-teaser {
  background: var(--color-text);
  color: #fff;
  border-radius: 20px;
  padding: 72px 80px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
}

.design-teaser h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  max-width: 480px;
  line-height: 1.2;
}

.design-teaser p {
  font-size: 1rem;
  color: rgba(255,255,255,0.6);
  margin-top: 12px;
  max-width: 400px;
  line-height: 1.7;
}

.design-teaser-right {
  flex-shrink: 0;
}

.btn-white {
  background: #fff;
  color: var(--color-text);
  font-weight: 600;
}

.btn-white:hover {
  background: #F3F4F6;
}

/* ── Quote block ── */
.quote-block {
  background: var(--color-accent-light);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 12px 12px 0;
  padding: 28px 32px;
  margin: 28px 0;
}

.quote-block p {
  font-size: 1.0625rem;
  font-style: italic;
  color: var(--color-text);
  margin-bottom: 12px;
  line-height: 1.7;
}

.quote-block cite {
  font-size: 0.875rem;
  color: var(--color-muted);
  font-style: normal;
  font-weight: 500;
}

/* ── Stats strip (home) ── */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--color-border);
}

.stat-num {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.5;
  max-width: 200px;
}

/* ── Case study page ── */
.case-hero {
  padding: 80px 0 72px;
}

.case-hero-meta {
  display: flex;
  gap: 48px;
  margin-top: 52px;
  flex-wrap: wrap;
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.meta-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-muted);
}

.meta-value {
  font-size: 0.9375rem;
  font-weight: 500;
}

.case-banner {
  width: 100%;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  border-bottom: 1px solid var(--color-border);
}

.case-image {
  max-width: 740px;
  margin: 48px auto 0;
  padding: 0 48px;
}

.case-image img {
  width: 100%;
  display: block;
  border-radius: 12px;
  border: 1px solid var(--color-border);
}

.case-content {
  max-width: 740px;
  margin: 0 auto;
  padding: 80px 48px 120px;
}

.case-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 16px;
  margin-top: 64px;
  color: var(--color-text);
}

.case-content h2:first-child {
  margin-top: 0;
}

.case-content p {
  font-size: 1.0625rem;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

.case-content ul {
  padding-left: 20px;
  margin-bottom: 24px;
}

.case-content ul li {
  font-size: 1.0625rem;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 10px;
}

.placeholder-block {
  background: var(--color-surface);
  border: 1.5px dashed #D1D5DB;
  border-radius: 12px;
  padding: 48px 40px;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.9375rem;
  margin: 28px 0;
  line-height: 1.6;
}

.placeholder-block strong {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9CA3AF;
  margin-bottom: 8px;
}

.insight-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 28px 0;
}

.insight-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
}

.insight-card .insight-num {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: -0.04em;
  margin-bottom: 6px;
}

.insight-card p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

.case-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
  margin: 0 48px;
  max-width: 740px;
  margin-left: auto;
  margin-right: auto;
}

.case-nav a {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.case-nav a:hover {
  color: var(--color-text);
}

/* ── Design experience page ── */
.design-hero {
  padding: 80px 0 72px;
  border-bottom: 1px solid var(--color-border);
}

.design-features {
  padding: 0;
}

.design-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  padding: 96px 0;
  border-bottom: 1px solid var(--color-border);
}

.design-feature:last-child {
  border-bottom: none;
}

.design-feature.reverse .design-feature-visual {
  order: 2;
}

.design-feature.reverse .design-feature-content {
  order: 1;
}

.design-feature-visual {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  overflow: hidden;
}

.design-feature-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

.design-feature-visual.capterra-bg {
  background: linear-gradient(135deg, #FFF7ED 0%, #FED7AA 100%);
}

.design-feature-visual.gemma-bg {
  background: linear-gradient(135deg, #F0FDF4 0%, #BBF7D0 100%);
}

.design-feature-visual.other-bg {
  background: linear-gradient(135deg, #F5F3FF 0%, #DDD6FE 100%);
}

.company-tag {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.design-feature-content h2 {
  font-size: clamp(1.625rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 18px;
}

.design-feature-content p {
  font-size: 1.0625rem;
  color: var(--color-muted);
  line-height: 1.75;
  margin-bottom: 16px;
}

.design-feature-content .detail-list {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.design-feature-content .detail-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.5;
}

.detail-list li::before {
  content: "→";
  color: var(--color-accent);
  font-weight: 600;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 40px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-name {
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: -0.01em;
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--color-muted);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .cards-grid {
    grid-template-columns: 1fr 1fr;
  }

  .design-feature {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .design-feature.reverse .design-feature-visual {
    order: 0;
  }

  .design-feature.reverse .design-feature-content {
    order: 0;
  }

  .design-teaser {
    flex-direction: column;
    align-items: flex-start;
    padding: 48px;
  }
}

@media (max-width: 900px) {
  .stats-strip {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

@media (max-width: 640px) {
  .container,
  .nav-inner {
    padding: 0 24px;
  }

  .hero {
    padding: 80px 0 64px;
  }

  .section {
    padding: 64px 0;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .case-study-grid {
    grid-template-columns: 1fr;
  }

  .insight-cards {
    grid-template-columns: 1fr;
  }

  .design-teaser {
    padding: 36px 28px;
  }

  .case-content {
    padding: 60px 24px 80px;
  }

  .case-nav {
    margin: 0 24px;
  }

  .case-hero-meta {
    gap: 24px;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}