/* ─── Reset & Base ─────────────────────────────────────────────────────────── */

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

:root {
  --ink:        #141412;
  --ink-muted:  #525250;
  --ink-faint:  #8A8A86;
  --bg-white:   #FAFAF8;
  --bg-light:   #F2F2EF;
  --bg-dark:    #0E0E0C;
  --accent:     #141412;
  --radius:     10px;
  --max-w:      1100px;
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body:    'Plus Jakarta Sans', system-ui, sans-serif;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg-white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ─── Utility ──────────────────────────────────────────────────────────────── */

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── Header / Nav ─────────────────────────────────────────────────────────── */

header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #E8E8E6;
}

header nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo {
  height: 36px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 0.9rem;
  letter-spacing: 0.01em;
  transition: color 0.15s;
}

.nav-links a:hover {
  color: var(--ink);
}

.btn-nav {
  padding: 8px 20px;
  border: 1.5px solid var(--ink);
  border-radius: 6px;
  color: var(--ink) !important;
  font-weight: 500;
  transition: background 0.15s, color 0.15s !important;
}

.btn-nav:hover {
  background: var(--ink);
  color: #fff !important;
}

/* ─── Hero ─────────────────────────────────────────────────────────────────── */

.hero {
  padding: 108px 0 96px;
  background: var(--bg-white);
  background-image:
    radial-gradient(circle at 72% 50%, rgba(0,0,0,0.025) 0%, transparent 60%),
    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(0,0,0,0.028) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(0,0,0,0.028) 40px);
}

.hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.hero-text {
  flex: 1;
  max-width: 620px;
}

.hero-text h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 1.125rem;
  color: var(--ink-muted);
  margin-bottom: 36px;
  max-width: 500px;
}

.hero-mark {
  flex-shrink: 0;
}

.hero-icon {
  width: 140px;
  height: 140px;
  opacity: 0.12;
}

/* ─── Buttons ──────────────────────────────────────────────────────────────── */

.btn-primary {
  display: inline-block;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 14px 28px;
  border-radius: 8px;
  transition: opacity 0.15s;
}

.btn-primary:hover {
  opacity: 0.82;
}

.btn-primary.btn-large {
  font-size: 1.05rem;
  padding: 16px 36px;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 11px 22px;
  border: 1.5px solid rgba(255,255,255,0.35);
  border-radius: 8px;
  transition: border-color 0.15s, background 0.15s;
  margin-top: 8px;
}

.btn-outline:hover {
  border-color: rgba(255,255,255,0.7);
  background: rgba(255,255,255,0.08);
}

.linkedin-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ─── Sections ─────────────────────────────────────────────────────────────── */

.section {
  padding: 88px 0;
}

.section-light {
  background: var(--bg-light);
}

.section-dark {
  background: var(--bg-dark);
  background-image: radial-gradient(ellipse at 80% 20%, rgba(255,255,255,0.04) 0%, transparent 55%);
  color: #fff;
}

.section-dark h2 {
  color: #fff;
}

.section-dark p {
  color: rgba(255,255,255,0.7);
}

h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--ink-muted);
  margin-bottom: 52px;
  max-width: 520px;
}

/* ─── Cards ────────────────────────────────────────────────────────────────── */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.card {
  background: var(--bg-white);
  border: 1px solid #E4E4E0;
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: box-shadow 0.2s, transform 0.2s;
}

.card:hover {
  box-shadow: 0 6px 28px rgba(0,0,0,0.09);
  transform: translateY(-2px);
}

.card-icon {
  width: 40px;
  height: 40px;
  color: var(--ink);
  margin-bottom: 18px;
}

.card-icon svg {
  width: 100%;
  height: 100%;
}

.card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.card p {
  font-size: 0.9rem;
  color: var(--ink-muted);
  line-height: 1.6;
}

/* ─── AI Section ───────────────────────────────────────────────────────────── */

.section-ai {
  background: var(--bg-white);
}

.ai-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 14px;
}

.ai-header {
  max-width: 680px;
  margin-bottom: 60px;
}

.ai-header h2 {
  margin-bottom: 16px;
}

.ai-header p {
  font-size: 1.05rem;
  color: var(--ink-muted);
  line-height: 1.7;
}

.lifecycle {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 0;
  border: 1px solid #E8E8E6;
  border-radius: var(--radius);
  overflow: hidden;
}

.lifecycle-step {
  display: flex;
  gap: 20px;
  padding: 32px 28px;
  border-right: 1px solid #E8E8E6;
  border-bottom: 1px solid #E8E8E6;
  transition: background 0.15s;
}

.lifecycle-step:hover {
  background: var(--bg-light);
}

.lifecycle-num {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
  padding-top: 3px;
  flex-shrink: 0;
  width: 24px;
}

.lifecycle-body h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.lifecycle-body p {
  font-size: 0.875rem;
  color: var(--ink-muted);
  line-height: 1.65;
}

.ai-callout {
  margin-top: 52px;
  background: var(--bg-dark);
  background-image: radial-gradient(ellipse at 90% 50%, rgba(255,255,255,0.05) 0%, transparent 60%);
  border-radius: var(--radius);
  padding: 48px 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.ai-callout p {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: rgba(255,255,255,0.82);
  max-width: 520px;
  line-height: 1.55;
}

/* AI card accent */
.card-ai {
  border-color: #D0D0CE;
}

/* ─── About ────────────────────────────────────────────────────────────────── */

.about-inner {
  display: flex;
  gap: 72px;
  align-items: flex-start;
}

.about-text {
  flex: 1;
}

.about-text p {
  margin-bottom: 18px;
  font-size: 1rem;
  color: rgba(255,255,255,0.72);
}

.about-highlights {
  flex-shrink: 0;
  width: 240px;
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding-top: 4px;
}

.highlight {
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-left: 2px solid rgba(255,255,255,0.15);
  padding-left: 20px;
}

.highlight-num {
  font-size: 2rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: -0.02em;
}

.highlight-label {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.4;
}

/* ─── Contact ──────────────────────────────────────────────────────────────── */

.contact-inner {
  text-align: center;
}

.contact-inner h2 {
  margin-bottom: 12px;
}

.contact-inner .section-sub {
  margin: 0 auto 36px;
}

.contact-alt {
  margin-top: 20px;
  font-size: 0.88rem;
  color: var(--ink-faint);
}

.contact-alt a {
  color: var(--ink-muted);
  text-decoration: underline;
}

.contact-alt a:hover {
  color: var(--ink);
}

/* ─── Footer ───────────────────────────────────────────────────────────────── */

footer {
  background: var(--bg-white);
  border-top: 1px solid #E8E8E6;
  padding: 36px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-logo {
  height: 28px;
  width: auto;
  opacity: 0.6;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--ink-faint);
}

/* ─── Responsive ───────────────────────────────────────────────────────────── */

@media (max-width: 768px) {
  .hero-inner {
    flex-direction: column;
    text-align: center;
  }

  .hero-text {
    max-width: 100%;
  }

  .hero-sub {
    max-width: 100%;
  }

  .hero-mark {
    order: -1;
  }

  .hero-icon {
    width: 80px;
    height: 80px;
  }

  .about-inner {
    flex-direction: column;
    gap: 48px;
  }

  .about-highlights {
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 24px;
  }

  .highlight {
    flex: 1;
    min-width: 140px;
  }

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

  .nav-links {
    gap: 20px;
  }

  .nav-links a:not(.btn-nav) {
    display: none;
  }

  .ai-callout {
    flex-direction: column;
    align-items: flex-start;
    padding: 32px 28px;
    gap: 24px;
  }

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