/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --accent: #059669;
  --accent-dark: #047857;
  --accent-light: #d1fae5;
  --text: #1e293b;
  --text-secondary: #475569;
  --text-light: #64748b;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.08);
  --max-width: 1040px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

html { scroll-behavior: smooth; background: var(--bg); }

body {
  font-family: var(--font);
  color: var(--text);
  line-height: 1.7;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-dark); }

img { max-width: 100%; display: block; }

/* ── Typography ──────────────────────────────────────────── */
h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; color: var(--text); }
h1 { font-size: clamp(2.2rem, 5vw, 3.2rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); letter-spacing: -0.02em; }
h3 { font-size: 1.25rem; }

/* ── Layout ──────────────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 96px 0;
}

section:nth-child(even) {
  background: var(--bg-alt);
}

.section-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  margin-bottom: 20px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.7;
}

/* ── Nav ─────────────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 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(--border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: baseline;
  gap: 0;
}

.nav-logo .macro { font-weight: 400; }
.nav-logo .merit { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s;
}

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

.nav-cta {
  background: var(--accent);
  color: #fff !important;
  padding: 8px 20px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: background 0.2s;
}

.nav-cta:hover { background: var(--accent-dark); color: #fff !important; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: 0.3s;
}

/* ── Hero ────────────────────────────────────────────────── */
.hero {
  padding: 160px 0 120px;
  background: var(--bg);
  text-align: center;
}

.hero h1 {
  max-width: 800px;
  margin: 0 auto 24px;
}

.hero-accent { color: var(--accent); }

.hero p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  padding: 14px 32px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1.05rem;
  transition: background 0.2s, transform 0.15s;
}

.hero-cta:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-1px);
}

.hero-cta svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
}

/* ── Problem ─────────────────────────────────────────────── */
.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
}

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
}

.problem-card .icon {
  width: 48px;
  height: 48px;
  background: var(--accent-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.problem-card .icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 2;
}

.problem-card h3 { margin-bottom: 12px; }

.problem-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
}

.problem-bottom {
  margin-top: 48px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border-radius: var(--radius);
  padding: 40px;
  color: #fff;
  text-align: center;
}

.problem-bottom h3 {
  color: #fff;
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.problem-bottom p {
  color: rgba(255,255,255,0.9);
  max-width: 640px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* ── Approach ────────────────────────────────────────────── */
.approach-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.approach-step {
  text-align: center;
  padding: 40px 24px;
}

.step-number {
  width: 56px;
  height: 56px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 24px;
}

.approach-step h3 { margin-bottom: 12px; }

.approach-step p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.approach-result {
  margin-top: 32px;
  text-align: center;
  padding: 32px;
  border: 2px solid var(--accent-light);
  border-radius: var(--radius);
  background: var(--bg-card);
}

.approach-result p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.approach-result strong { color: var(--text); }

/* ── Services ────────────────────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.service-card {
  padding: 32px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  transition: box-shadow 0.2s, transform 0.15s;
}

.service-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.service-card .icon {
  width: 44px;
  height: 44px;
  background: var(--accent-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.service-card .icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 2;
}

.service-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ── Case Study ──────────────────────────────────────────── */
.case-study-card {
  margin-top: 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px;
}

.case-study-content h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.case-study-content h3 a {
  color: var(--text);
  text-decoration: none;
}

.case-study-content h3 a:hover {
  color: var(--accent);
}

.case-study-content p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.case-study-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0;
}

.highlight-tag {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 6px 14px;
  background: var(--accent-light);
  color: var(--accent-dark);
  border-radius: 20px;
}

.case-study-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 0.95rem;
}

.case-study-link svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
}

.case-study-card.reverse .case-study-visual {
  order: -1;
}

.case-study-visual {
  background: linear-gradient(135deg, #f0fdf4, #d1fae5);
  border-radius: var(--radius);
  padding: 48px 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s, box-shadow 0.2s;
}

.case-study-visual:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: inherit;
}

.case-study-visual .app-name {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.case-study-visual .app-name span { color: var(--accent); }

.case-study-visual .app-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.case-study-stats {
  display: flex;
  gap: 32px;
}

.case-study-stat {
  text-align: center;
}

.case-study-stat .number {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
}

.case-study-stat .number-text {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.02em;
}

.case-study-stat .label {
  font-size: 0.75rem;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── About ───────────────────────────────────────────────── */
.about-content {
  max-width: 720px;
  margin-top: 40px;
}

.about-content p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 1.05rem;
}

.about-content p:first-of-type {
  font-size: 1.15rem;
  color: var(--text);
}

.credentials {
  display: flex;
  gap: 40px;
  margin-top: 36px;
  padding-top: 36px;
  border-top: 1px solid var(--border);
}

.credential {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.credential svg {
  width: 20px;
  height: 20px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 2;
  flex-shrink: 0;
  margin-top: 2px;
}

.credential span {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* ── Early Access ────────────────────────────────────────── */
.early-access-card {
  margin-top: 48px;
  background: linear-gradient(135deg, #064e3b, #047857);
  border-radius: var(--radius);
  padding: 56px 48px;
  color: #fff;
}

.early-access-card h3 {
  color: #fff;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.early-access-card > p {
  color: rgba(255,255,255,0.85);
  font-size: 1.05rem;
  max-width: 600px;
  margin-bottom: 32px;
}

.early-benefits {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.early-benefit {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.early-benefit svg {
  width: 20px;
  height: 20px;
  stroke: #6ee7b7;
  fill: none;
  stroke-width: 2.5;
  flex-shrink: 0;
  margin-top: 3px;
}

.early-benefit span {
  color: rgba(255,255,255,0.92);
  font-size: 0.95rem;
  line-height: 1.5;
}

.early-benefit a {
  color: #6ee7b7;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.early-benefit a:hover {
  color: #a7f3d0;
}

/* ── Contact ─────────────────────────────────────────────── */
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  margin-top: 48px;
}

.contact-text p {
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-size: 1.05rem;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.1rem;
  font-weight: 600;
}

.contact-email svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-form input,
.contact-form textarea {
  font-family: var(--font);
  font-size: 0.95rem;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  outline: none;
  transition: border-color 0.2s;
  color: var(--text);
  background: var(--bg);
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--accent);
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

.contact-form button {
  font-family: var(--font);
  background: var(--accent);
  color: #fff;
  padding: 14px 32px;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s;
  align-self: flex-start;
}

.contact-form button:hover {
  background: var(--accent-dark);
}

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

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

.footer-logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
}

.footer-logo .macro { font-weight: 400; }
.footer-logo .merit { color: var(--accent); }

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-light);
}

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

/* Tablet landscape / small desktop */
@media (max-width: 960px) {
  .problem-grid,
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .approach-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .case-study-card {
    grid-template-columns: 1fr;
    padding: 32px;
  }

  .case-study-visual { min-height: 240px; }

  .contact-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .early-benefits {
    grid-template-columns: 1fr;
  }

  .credentials {
    flex-direction: column;
    gap: 20px;
  }
}

/* Tablet portrait */
@media (max-width: 768px) {
  section { padding: 72px 0; }

  .hero { padding: 140px 0 96px; }

  .problem-grid,
  .services-grid {
    grid-template-columns: 1fr;
  }

  .approach-steps {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .approach-step {
    text-align: left;
    padding: 24px 0;
    display: flex;
    align-items: flex-start;
    gap: 20px;
  }

  .step-number {
    flex-shrink: 0;
    margin-bottom: 0;
  }

  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 20px 24px;
    gap: 16px;
    box-shadow: var(--shadow-lg);
  }

  .nav-toggle { display: block; }

  .case-study-stats { gap: 24px; }

  .early-access-card { padding: 40px 28px; }

  .problem-bottom { padding: 32px 24px; }
}

/* Mobile */
@media (max-width: 480px) {
  section { padding: 56px 0; }

  .hero { padding: 120px 0 72px; }

  .hero p { font-size: 1.05rem; }

  .hero-cta {
    padding: 12px 28px;
    font-size: 1rem;
  }

  .container { padding: 0 16px; }

  .problem-card { padding: 28px 20px; }

  .service-card { padding: 24px 20px; }

  .case-study-card { padding: 24px 16px; }
  .case-study-visual { padding: 36px 20px; min-height: 200px; }
  .case-study-stats {
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
  }
  .case-study-content h3 { font-size: 1.3rem; }

  .early-access-card { padding: 32px 20px; }

  .approach-result { padding: 24px 16px; }
  .approach-result p { font-size: 1rem; }

  .footer-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .contact-form button {
    width: 100%;
    text-align: center;
  }
}