/* ============================================
   EndoFlow Marketing — Stylesheet
   Surgical. Clean. Minimal. White.
   ============================================ */

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

:root {
  --white: #ffffff;
  --off-white: #fafafa;
  --gray-50: #f8f8f9;
  --gray-100: #efefef;
  --gray-200: #e2e2e4;
  --gray-300: #c9c9cd;
  --gray-400: #a0a0a8;
  --gray-500: #74747e;
  --gray-600: #57575f;
  --gray-700: #3f3f44;
  --gray-800: #2a2a2e;
  --gray-900: #1a1a1e;
  --black: #0a0a0a;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;

  --container-width: 1200px;
  --section-py: 128px;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* --- Layout --- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 40px;
  width: 100%;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

.nav-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 40px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.02em;
  color: var(--black);
}

.nav-logo-icon { width: 26px; height: 26px; flex-shrink: 0; }

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

.nav-link {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--gray-500);
  letter-spacing: -0.01em;
  transition: color 0.2s;
}

.nav-link:hover { color: var(--black); }

.nav-cta {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--gray-600);
  padding: 8px 16px;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  transition: all 0.2s ease;
  letter-spacing: -0.01em;
}

.nav-cta:hover {
  color: var(--black);
  border-color: var(--gray-400);
  background: var(--gray-50);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  padding: 14px 28px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  line-height: 1;
}

.btn-primary {
  background: var(--black);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--gray-800);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.btn-ghost {
  background: transparent;
  color: var(--gray-600);
  border: 1px solid var(--gray-200);
}

.btn-ghost:hover {
  color: var(--black);
  border-color: var(--gray-400);
  background: var(--gray-50);
}

.btn-lg {
  font-size: 1rem;
  padding: 18px 36px;
  border-radius: 12px;
}

/* --- Hero --- */
.hero {
  padding: 180px 0 var(--section-py);
  text-align: center;
  background: var(--white);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gray-500);
  padding: 6px 16px 6px 12px;
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: 100px;
  margin-bottom: 40px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero-badge svg { opacity: 0.5; }

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.75rem, 5.5vw, 4.5rem);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.005em;
  color: var(--black);
  margin-bottom: 28px;
}

.hero-title em { font-style: italic; }

.hero-subtitle {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--gray-500);
  max-width: 580px;
  margin: 0 auto 48px;
  letter-spacing: -0.01em;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* --- Trust Bar --- */
.trust-bar {
  padding: 0 0 var(--section-py);
  background: var(--white);
}

.trust-bar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  padding: 28px 0;
  border-top: 1px solid var(--gray-100);
  border-bottom: 1px solid var(--gray-100);
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--gray-500);
  letter-spacing: 0.01em;
}

.trust-item svg { color: var(--gray-400); flex-shrink: 0; }
.trust-divider { width: 1px; height: 20px; background: var(--gray-200); }

/* --- Sections --- */
.section {
  padding: var(--section-py) 0;
}

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

.section-eyebrow {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 20px;
}

.section-heading {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--black);
  margin-bottom: 20px;
}

.section-heading.serif {
  font-family: var(--font-serif);
  font-weight: 400;
}

.section-body {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--gray-500);
}

.section-header {
  margin-bottom: 64px;
}

.section-header-center {
  text-align: center;
}

.section-header-center .section-lede {
  margin-left: auto;
  margin-right: auto;
}

.section-lede {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--gray-500);
  max-width: 560px;
  margin-top: 4px;
}

.section-lede-center {
  text-align: center;
}

/* --- Split Layout --- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.split-reverse {
  direction: rtl;
}

.split-reverse > * {
  direction: ltr;
}

.split-content {
  padding-top: 8px;
}

/* --- Stats --- */
.stat-stack {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--gray-100);
  border: 1px solid var(--gray-100);
  border-radius: 16px;
  overflow: hidden;
}

.stat-card {
  background: var(--white);
  padding: 32px 36px;
  display: flex;
  align-items: baseline;
  gap: 20px;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 400;
  color: var(--black);
  line-height: 1;
  min-width: 72px;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--gray-500);
  line-height: 1.5;
}

/* --- Features Grid --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--gray-200);
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  overflow: hidden;
}

.section-alt .features-grid {
  background: var(--gray-100);
  border-color: var(--gray-100);
}

.feature-card {
  padding: 40px 32px;
  background: var(--white);
}

.section-alt .feature-card {
  background: var(--white);
}

.section-alt .persona-card,
.section-alt .security-card,
.section-alt .distributor-card {
  background: var(--white);
}

.feature-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  margin-bottom: 20px;
  color: var(--gray-700);
}

.feature-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.feature-desc {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--gray-500);
}

/* --- Workflow Steps --- */
.workflow-steps {
  display: flex;
  flex-direction: column;
}

.workflow-step {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--gray-200);
}

.workflow-step:first-child {
  border-top: 1px solid var(--gray-200);
}

.workflow-step-number {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  color: var(--gray-300);
  min-width: 32px;
  line-height: 1.3;
}

.workflow-step-content h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 2px;
  letter-spacing: -0.01em;
}

.workflow-step-content p {
  font-size: 0.8125rem;
  color: var(--gray-500);
  line-height: 1.5;
}

/* --- Strictness Badges --- */
.strictness-badges {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 32px;
}

.strictness-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--gray-600);
  padding: 10px 16px;
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: 8px;
}

.strictness-badge svg {
  color: var(--gray-400);
  flex-shrink: 0;
}

/* --- Persona Grid --- */
.persona-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--gray-100);
  border: 1px solid var(--gray-100);
  border-radius: 16px;
  overflow: hidden;
}

.persona-card {
  padding: 40px 32px;
  background: var(--white);
}

.persona-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  margin-bottom: 20px;
  color: var(--gray-700);
}

.persona-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.persona-desc {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--gray-500);
}

/* --- APAC --- */
.apac-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--gray-100);
  border: 1px solid var(--gray-100);
  border-radius: 16px;
  overflow: hidden;
}

.apac-card {
  padding: 32px 28px;
  background: var(--white);
}

.apac-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  margin-bottom: 14px;
  color: var(--gray-600);
}

.apac-card h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}

.apac-card p {
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--gray-500);
}

.apac-countries {
  margin-top: 40px;
}

.apac-countries-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gray-400);
  margin-bottom: 16px;
}

.apac-countries-list {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.apac-countries-list span {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--gray-600);
  padding: 6px 14px;
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: 100px;
}

/* --- Security Grid --- */
.security-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--gray-100);
  border: 1px solid var(--gray-100);
  border-radius: 16px;
  overflow: hidden;
}

.security-card {
  padding: 40px 32px;
  background: var(--white);
}

.security-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  margin-bottom: 20px;
  color: var(--gray-700);
}

.security-card h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.security-card p {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--gray-500);
}

/* --- Module Tiers --- */
.module-tiers {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--gray-100);
  border: 1px solid var(--gray-100);
  border-radius: 16px;
  overflow: hidden;
}

.module-tier {
  padding: 32px 36px;
  background: var(--white);
}

.module-tier-highlight {
  background: var(--white);
}

.module-tier-header h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--black);
  letter-spacing: -0.02em;
}

.module-tier-desc {
  font-size: 0.8125rem;
  color: var(--gray-400);
  margin-top: 2px;
  margin-bottom: 16px;
}

.module-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.module-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--gray-700);
}

.module-list li svg {
  color: var(--gray-400);
  flex-shrink: 0;
}

/* --- Distributors Bar --- */
.section-distributors {
  padding: 80px 0;
  background: var(--gray-50);
  border-top: 1px solid var(--gray-100);
  border-bottom: 1px solid var(--gray-100);
}

.distributors-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 64px;
}

.distributors-bar-content {
  flex: 1;
}

.distributors-bar-text {
  margin-bottom: 24px;
}

.distributors-bar-heading {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--black);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.distributors-bar-desc {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--gray-500);
  max-width: 520px;
}

.distributors-bar-features {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.distributors-bar-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--gray-600);
}

.distributors-bar-feature svg {
  color: var(--gray-400);
  flex-shrink: 0;
}

.distributors-bar-action {
  flex-shrink: 0;
  text-align: center;
}

.distributors-bar-note {
  font-size: 0.8125rem;
  color: var(--gray-400);
  margin-top: 12px;
}

.distributors-bar-note a {
  color: var(--gray-500);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--gray-300);
  transition: color 0.2s;
}

.distributors-bar-note a:hover { color: var(--black); }

/* --- CTA Section --- */
.section-cta {
  text-align: center;
  background: var(--white);
}

.cta-inner {
  max-width: 600px;
  margin: 0 auto;
}

.cta-body {
  margin: 0 auto 48px;
}

.cta-actions {
  margin-bottom: 20px;
}

.cta-note {
  font-size: 0.8125rem;
  color: var(--gray-400);
}

.cta-note a {
  color: var(--gray-600);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--gray-300);
  transition: color 0.2s;
}

.cta-note a:hover { color: var(--black); }

/* --- Provenance --- */
.section-provenance {
  padding: 80px 0;
  background: var(--white);
  border-top: 1px solid var(--gray-100);
}

.provenance-inner {
  max-width: 640px;
}

.provenance-heading {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--black);
  line-height: 1.4;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.provenance-heading a {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--gray-300);
  transition: text-decoration-color 0.2s;
}

.provenance-heading a:hover {
  text-decoration-color: var(--black);
}

.provenance-body {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--gray-500);
  margin-bottom: 24px;
}

.provenance-body a {
  color: var(--gray-700);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--gray-300);
  transition: color 0.2s;
}

.provenance-body a:hover { color: var(--black); }

.provenance-logos {
  display: flex;
  align-items: center;
  gap: 16px;
}

.provenance-logo-link {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  transition: color 0.2s;
}

.provenance-logo-link:hover { color: var(--black); }
.provenance-logo-link svg { opacity: 0.5; }

.provenance-divider {
  color: var(--gray-300);
  font-size: 0.875rem;
}

/* --- Footer --- */
.footer {
  padding: 32px 0;
  background: var(--white);
  border-top: 1px solid var(--gray-100);
}

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

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: -0.02em;
  color: var(--black);
}

.footer-logo-icon { width: 20px; height: 20px; }

.footer-links {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8125rem;
  color: var(--gray-400);
}

.footer-links a {
  color: var(--gray-500);
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--black); }

.footer-sep { color: var(--gray-300); }

.footer-meta p {
  font-size: 0.8125rem;
  color: var(--gray-400);
}

.footer-meta a {
  color: var(--gray-500);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--gray-300);
  transition: color 0.2s;
}

.footer-meta a:hover { color: var(--black); }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .features-grid,
  .persona-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .split {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .split-reverse {
    direction: ltr;
  }

  .security-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .distributors-bar {
    flex-direction: column;
    text-align: center;
    gap: 32px;
  }

  .distributors-bar-desc {
    max-width: none;
  }

  .distributors-bar-features {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  :root {
    --section-py: 80px;
  }

  .container {
    padding: 0 24px;
  }

  .nav-inner {
    padding: 0 24px;
  }

  .nav-links {
    gap: 20px;
  }

  .nav-link { display: none; }

  .hero {
    padding-top: 128px;
  }

  .features-grid,
  .persona-grid,
  .security-grid,
  .distributor-grid {
    grid-template-columns: 1fr;
  }

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

  .trust-bar-inner {
    flex-direction: column;
    gap: 16px;
  }

  .trust-divider { display: none; }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .footer-links {
    flex-direction: column;
    gap: 4px;
  }

  .footer-sep { display: none; }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.25rem;
  }

  .section-heading {
    font-size: 1.75rem;
  }

  .feature-card,
  .persona-card,
  .security-card,
  .distributor-card {
    padding: 28px 24px;
  }

  .stat-card {
    padding: 24px;
    flex-direction: column;
    gap: 8px;
  }

  .btn-lg {
    padding: 16px 28px;
    font-size: 0.9375rem;
  }
}