:root {
  color-scheme: light;
  --color-page: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-soft: #f1f5f9;
  --color-text: #111827;
  --color-muted: #4b5563;
  --color-faint: #6b7280;
  --color-border: #d8dee8;
  --color-primary: #1d4ed8;
  --color-primary-dark: #1e40af;
  --color-primary-soft: #dbeafe;
  --color-orange-soft: #ffedd5;
  --color-orange: #c2410c;
  --color-green-soft: #dcfce7;
  --color-green: #15803d;
  --shadow-soft: 0 16px 40px rgba(15, 23, 42, 0.08);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--color-page);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.75;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
}

.header-inner,
.footer-inner,
.section,
.legal-page {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  font-size: 1.125rem;
  font-weight: 750;
  letter-spacing: 0;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--color-primary);
  color: #ffffff;
  font-weight: 800;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.94rem;
}

.site-nav a {
  color: var(--color-muted);
  font-weight: 600;
}

.site-nav a.button {
  color: #ffffff;
}

.button,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 700;
  line-height: 1.2;
}

.button {
  background: var(--color-primary);
  color: #ffffff;
  box-shadow: 0 10px 24px rgba(29, 78, 216, 0.2);
}

.button:hover {
  background: var(--color-primary-dark);
  text-decoration: none;
}

.button-secondary {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-primary);
}

.button-secondary:hover {
  border-color: var(--color-primary);
  text-decoration: none;
}

.hero {
  padding: 72px 0 44px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  gap: 36px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--color-primary);
  font-size: 0.9rem;
  font-weight: 800;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(2.1rem, 5vw, 4.2rem);
  line-height: 1.14;
  letter-spacing: 0;
}

.lead {
  max-width: 700px;
  margin-bottom: 24px;
  color: var(--color-muted);
  font-size: 1.12rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin: 28px 0 14px;
}

.note {
  color: var(--color-faint);
  font-size: 0.94rem;
}

.board-preview {
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.preview-title {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  color: var(--color-muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.preview-columns {
  display: grid;
  gap: 12px;
}

.preview-column {
  padding: 14px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-page);
}

.preview-column h3 {
  margin-bottom: 10px;
  font-size: 0.95rem;
}

.preview-card {
  margin-top: 8px;
  padding: 10px 12px;
  border-radius: 6px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 0.92rem;
}

.preview-card.is-active {
  border-color: rgba(194, 65, 12, 0.32);
  background: var(--color-orange-soft);
  color: var(--color-orange);
}

.section {
  padding: 54px 0;
}

.section-header {
  max-width: 760px;
  margin-bottom: 26px;
}

.section-header h2,
.legal-page h1 {
  margin-bottom: 12px;
  font-size: clamp(1.65rem, 3vw, 2.4rem);
  line-height: 1.25;
  letter-spacing: 0;
}

.section-header p,
.legal-intro {
  color: var(--color-muted);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.75fr);
  gap: 28px;
  align-items: start;
}

.panel {
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
}

.panel.accent {
  background: linear-gradient(180deg, #ffffff 0%, #eff6ff 100%);
}

.feature-grid,
.user-grid,
.steps {
  display: grid;
  gap: 16px;
}

.feature-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.user-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature,
.user-item,
.step {
  min-height: 100%;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
}

.step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 14px;
  align-items: center;
}

.feature h3,
.user-item h3,
.step h3,
.panel h3 {
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.feature p,
.user-item p,
.step p,
.panel p {
  margin-bottom: 0;
  color: var(--color-muted);
}

.steps {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  counter-reset: steps;
}

.step::before {
  counter-increment: steps;
  content: counter(steps);
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: 800;
}

.step h3 {
  margin-bottom: 0;
}

.step p {
  grid-column: 1 / -1;
}

.callout {
  padding: 28px;
  border: 1px solid rgba(21, 128, 61, 0.2);
  border-radius: 8px;
  background: var(--color-green-soft);
}

.callout p {
  margin-bottom: 0;
  color: #14532d;
}

.site-footer {
  margin-top: 40px;
  border-top: 1px solid var(--color-border);
  background: #ffffff;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.footer-links a {
  color: var(--color-muted);
  font-weight: 600;
}

.copyright {
  color: var(--color-faint);
  font-size: 0.92rem;
}

.legal-page {
  padding: 52px 0;
}

.legal-content {
  display: grid;
  gap: 20px;
  margin-top: 30px;
}

.legal-section {
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
}

.legal-section h2 {
  margin-bottom: 10px;
  font-size: 1.25rem;
}

.legal-section p,
.legal-section li {
  color: var(--color-muted);
}

.legal-section p:last-child,
.legal-section ul:last-child {
  margin-bottom: 0;
}

.contact-card {
  max-width: 720px;
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.mail-link {
  display: inline-flex;
  margin: 12px 0 18px;
  font-size: 1.2rem;
  font-weight: 800;
}

@media (max-width: 880px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  .site-nav {
    width: 100%;
    flex-wrap: wrap;
    gap: 10px 14px;
  }

  .site-nav .button {
    width: 100%;
  }

  .hero-grid,
  .split {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .user-grid,
  .steps {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .header-inner,
  .footer-inner,
  .section,
  .legal-page {
    width: min(100% - 28px, 1080px);
  }

  .hero {
    padding-top: 44px;
  }

  .hero-actions .button,
  .hero-actions .button-secondary {
    width: 100%;
  }

  .panel,
  .feature,
  .user-item,
  .step,
  .legal-section,
  .contact-card {
    padding: 18px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}