:root {
    --bg: #fbf9f4;
    --bg-alt: #f4f1ea;
    --bg-deep: #efeae0;
    --fg: #1f1d1a;
    --fg-soft: #534f46;
    --muted: #7a7468;
    --accent: #0d5c5a;
    --link: #174f7a;
    --rule: #d9d2c5;
    --rule-soft: #e7e1d6;
    --highlight: #d5c39e;
  }

  * {
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    font-family: 'Inter Tight', sans-serif;
    background: radial-gradient(circle at top right, #f7f2e5 0%, var(--bg) 45%);
    color: var(--fg);
    line-height: 1.5;
    text-rendering: optimizeLegibility;
  }

  a {
    color: var(--link);
  }

  a:focus-visible,
  button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
  }

  .container {
    width: min(1120px, 100% - 56px);
    margin: 0 auto;
  }

  .topbar {
    border-bottom: 1px solid var(--rule);
    padding: 20px 0;
    background: color-mix(in srgb, var(--bg) 92%, white);
  }

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

  .brand {
    font-family: 'Fraunces', Georgia, serif;
    font-size: 23px;
    color: var(--fg);
    text-decoration: none;
    letter-spacing: -0.012em;
  }

  .brand-mark {
    font-style: italic;
    color: var(--accent);
  }

  .meta-line {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .topbar-actions {
    display: flex;
    align-items: center;
    gap: 22px;
  }

  .topbar-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--rule);
    background: transparent;
    color: var(--fg);
    text-decoration: none;
    font-family: 'Inter Tight', sans-serif;
    font-weight: 500;
    font-size: 13px;
    letter-spacing: 0.005em;
    transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
  }

  .topbar-cta:hover {
    background: var(--fg);
    color: var(--bg);
    border-color: var(--fg);
  }

  .topbar-cta .arrow {
    transition: transform 200ms cubic-bezier(0.4, 0, 0.2, 1);
  }

  .topbar-cta:hover .arrow {
    transform: translateX(2px);
  }

  .hero {
    padding: 84px 0 76px;
    border-bottom: 1px solid var(--rule);
  }

  .hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 68px;
    align-items: start;
  }

  .hero-eyebrow {
    margin: 0 0 18px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.11em;
    text-transform: uppercase;
    color: var(--muted);
  }

  .headline {
    margin: 0;
    font-family: 'Fraunces', Georgia, serif;
    font-weight: 500;
    font-size: clamp(40px, 6vw, 78px);
    line-height: 0.98;
    letter-spacing: -0.03em;
  }

  .headline em {
    font-style: italic;
    color: var(--accent);
  }

  .headline-rule {
    width: 88px;
    height: 2px;
    margin: 30px 0 28px;
    background: var(--accent);
  }

  .hero-body {
    margin: 0;
    max-width: 36em;
    color: var(--fg-soft);
    font-size: 16px;
    line-height: 1.72;
  }

  .hero-meta {
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr;
    row-gap: 6px;
  }

  .hero-meta dt {
    margin: 18px 0 0;
    padding-top: 14px;
    border-top: 1px solid var(--rule);
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
  }

  .hero-meta dd {
    margin: 0;
    color: var(--fg-soft);
    font-size: 14px;
    line-height: 1.6;
  }

  .section-label {
    margin: 0 0 22px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
  }

  .section-label .num {
    color: var(--accent);
    margin-right: 8px;
  }

  .offerings {
    padding: 80px 0;
    border-bottom: 1px solid var(--rule);
  }

  .offerings-intro {
    max-width: 58em;
    margin-bottom: 38px;
  }

  .offerings-intro h2 {
    margin: 0 0 14px;
    font-family: 'Fraunces', Georgia, serif;
    font-size: clamp(32px, 5vw, 54px);
    line-height: 1.02;
    letter-spacing: -0.02em;
    font-weight: 500;
  }

  .offerings-intro h2 em {
    color: var(--accent);
    font-style: italic;
  }

  .offerings-intro p {
    margin: 0;
    font-size: 16px;
    line-height: 1.72;
    color: var(--fg-soft);
    max-width: 44em;
  }

  .offering-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .offering {
    border: 1px solid var(--rule);
    background: color-mix(in srgb, var(--bg) 94%, white);
    padding: 34px 30px;
  }

  .offering-tag {
    margin: 0 0 10px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .offering h3 {
    margin: 0 0 14px;
    font-family: 'Fraunces', Georgia, serif;
    font-size: 29px;
    line-height: 1.1;
    font-weight: 500;
    letter-spacing: -0.015em;
  }

  .offering p {
    margin: 0 0 14px;
    color: var(--fg-soft);
    font-size: 15px;
    line-height: 1.7;
  }

  .offering ul.offering-list {
    list-style: none;
    margin: 8px 0 0;
    padding: 0;
    border-top: 1px solid var(--rule-soft);
    padding-top: 16px;
  }

  .offering ul.offering-list li {
    font-size: 13.5px;
    color: var(--fg-soft);
    padding: 4px 0;
    display: flex;
    gap: 12px;
    align-items: baseline;
  }

  .offering ul.offering-list li::before {
    content: '-';
    color: var(--muted);
    flex-shrink: 0;
  }

  .capabilities {
    padding: 80px 0;
    border-bottom: 1px solid var(--rule);
    background: var(--bg-alt);
  }

  .capability-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--rule);
    border: 1px solid var(--rule);
  }

  .capability {
    padding: 28px 26px;
    background: var(--bg);
  }

  .capability-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--accent);
    margin: 0 0 14px 0;
    letter-spacing: 0.06em;
  }

  .capability h4 {
    font-family: 'Fraunces', Georgia, serif;
    font-weight: 500;
    font-size: 19px;
    line-height: 1.25;
    margin: 0 0 10px 0;
    color: var(--fg);
    letter-spacing: -0.008em;
  }

  .capability p {
    margin: 0;
    color: var(--fg-soft);
    font-size: 14px;
    line-height: 1.55;
  }

  .capability-prompt {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px dashed var(--rule);
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--muted);
    letter-spacing: 0;
  }

  .capability-prompt::before {
    content: '> ';
    color: var(--accent);
  }

  .capability-note {
    margin-top: 10px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10.5px;
    color: var(--muted);
    letter-spacing: 0.02em;
    line-height: 1.4;
  }

  .deployment {
    padding: 80px 0;
    border-bottom: 1px solid var(--rule);
  }

  .deployment-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 64px;
    align-items: start;
  }

  .deployment-body {
    max-width: 36em;
  }

  .deployment-body p {
    font-family: 'Fraunces', Georgia, serif;
    font-size: 24px;
    line-height: 1.4;
    font-weight: 400;
    color: var(--fg);
    margin: 0 0 24px 0;
    letter-spacing: -0.005em;
  }

  .deployment-body p:last-of-type {
    margin-bottom: 0;
  }

  .deployment-body .highlight {
    background: linear-gradient(180deg, transparent 65%, color-mix(in srgb, var(--highlight) 35%, transparent) 65%);
    padding: 0 2px;
  }

  .deployment-attrs {
    margin-top: 32px;
  }

  .deployment-attrs > div {
    display: flex;
    gap: 24px;
    padding: 8px 0;
    border-bottom: 1px solid var(--rule);
  }

  .deployment-attrs > div:last-child {
    border-bottom: none;
  }

  .deployment-attrs .attr-key {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    min-width: 7em;
    padding-top: 2px;
  }

  .deployment-attrs .attr-val {
    color: var(--fg-soft);
    font-family: 'Inter Tight', sans-serif;
    font-size: 14px;
  }

  .sms-section {
    padding: 80px 0;
    border-bottom: 1px solid var(--rule);
    background: var(--bg-deep);
  }

  .sms-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
  }

  .sms-grid h2 {
    font-family: 'Fraunces', Georgia, serif;
    font-weight: 400;
    font-size: 32px;
    line-height: 1.15;
    margin: 0;
    letter-spacing: -0.012em;
    color: var(--fg);
  }

  .sms-body p {
    color: var(--fg-soft);
    font-size: 15px;
    line-height: 1.7;
    margin: 0 0 18px 0;
  }

  .sms-body p:last-child {
    margin-bottom: 0;
  }

  .sms-body a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-thickness: 1px;
  }

  .sms-body a:hover {
    text-decoration-thickness: 2px;
  }

  .signin {
    padding: 96px 0;
    text-align: center;
    border-bottom: 1px solid var(--rule);
  }

  .signin-eyebrow {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    margin: 0 0 20px 0;
  }

  .signin h2 {
    font-family: 'Fraunces', Georgia, serif;
    font-weight: 400;
    font-size: clamp(28px, 3.5vw, 40px);
    line-height: 1.15;
    margin: 0 auto 36px auto;
    letter-spacing: -0.012em;
    color: var(--fg);
    max-width: 22em;
  }

  .signin h2 em {
    font-style: italic;
    color: var(--accent);
  }

  .cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--fg);
    color: var(--bg);
    padding: 16px 32px;
    text-decoration: none;
    font-family: 'Inter Tight', sans-serif;
    font-weight: 500;
    font-size: 15px;
    letter-spacing: 0.005em;
    border: 1px solid var(--fg);
    transition: all 220ms cubic-bezier(0.4, 0, 0.2, 1);
  }

  .cta-btn:hover {
    background: var(--bg);
    color: var(--fg);
  }

  .cta-btn .arrow {
    transition: transform 220ms cubic-bezier(0.4, 0, 0.2, 1);
  }

  .cta-btn:hover .arrow {
    transform: translateX(4px);
  }

  footer {
    padding: 56px 0 40px;
    background: var(--bg);
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
  }

  .footer-col h4 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    margin: 0 0 14px 0;
    font-weight: 500;
  }

  .footer-col address,
  .footer-col p,
  .footer-col a {
    font-style: normal;
    color: var(--fg-soft);
    font-size: 14px;
    line-height: 1.7;
    text-decoration: none;
    display: block;
  }

  .footer-col a {
    color: var(--link);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-thickness: 1px;
  }

  .footer-col a:hover {
    color: var(--accent);
  }

  .footer-col strong {
    color: var(--fg);
    font-weight: 500;
  }

  .footer-base {
    border-top: 1px solid var(--rule);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--muted);
    letter-spacing: 0.04em;
    text-transform: uppercase;
  }

  .reveal {
    opacity: 0;
    transform: translateY(12px);
    animation: reveal 800ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
  }

  .reveal-1 { animation-delay: 100ms; }
  .reveal-2 { animation-delay: 220ms; }
  .reveal-3 { animation-delay: 340ms; }
  .reveal-4 { animation-delay: 460ms; }

  @keyframes reveal {
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  @media (max-width: 980px) {
    .container {
      width: min(1120px, 100% - 42px);
    }

    .hero-grid,
    .deployment-grid,
    .sms-grid,
    .offering-grid {
      grid-template-columns: 1fr;
      gap: 40px;
    }

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

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

  @media (max-width: 760px) {
    .container {
      width: min(1120px, 100% - 34px);
    }

    .topbar {
      padding: 16px 0;
    }

    .topbar-inner {
      flex-direction: row;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    .topbar-actions {
      gap: 14px;
    }

    .meta-line {
      display: none;
    }

    .hero,
    .offerings,
    .capabilities,
    .deployment,
    .sms-section,
    .signin {
      padding: 60px 0;
    }

    .headline {
      font-size: clamp(34px, 12vw, 52px);
    }

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

    .offering {
      padding: 30px 24px;
    }

    .offering h3 {
      font-size: 24px;
    }

    .capability-grid,
    .footer-grid {
      grid-template-columns: 1fr;
    }

    .deployment-body p {
      font-size: 20px;
    }

    .footer-base {
      flex-direction: column;
      gap: 8px;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    html {
      scroll-behavior: auto;
    }

    .reveal {
      opacity: 1;
      transform: none;
      animation: none;
    }
  }

/* ─── Top navigation menu ─────────────────────────────────────────── */

.primary-nav {
  display: flex;
  align-items: center;
  flex: 1;
  justify-content: center;
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 32px;
  align-items: center;
}

.nav-link {
  font-family: 'Inter Tight', sans-serif;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--fg);
  text-decoration: none;
  background: none;
  border: none;
  padding: 8px 0;
  cursor: pointer;
  letter-spacing: 0.005em;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--accent);
}

.nav-caret {
  font-size: 9px;
  color: var(--muted);
  transition: transform 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-group {
  position: relative;
}

.nav-group[aria-expanded="true"] .nav-caret,
.nav-group:hover .nav-caret {
  transform: rotate(180deg);
  color: var(--accent);
}

.nav-submenu {
  position: absolute;
  top: 100%;
  left: 0;
  margin: 0;
  padding: 8px 0;
  list-style: none;
  background: var(--bg);
  border: 1px solid var(--rule);
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 180ms ease, transform 180ms ease, visibility 180ms;
  z-index: 60;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.nav-group:hover .nav-submenu,
.nav-group:focus-within .nav-submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-submenu a {
  display: block;
  padding: 10px 18px;
  font-family: 'Inter Tight', sans-serif;
  font-size: 13.5px;
  color: var(--fg-soft);
  text-decoration: none;
  letter-spacing: 0.005em;
  transition: background 150ms ease, color 150ms ease;
}

.nav-submenu a:hover,
.nav-submenu a:focus-visible {
  background: var(--bg-alt);
  color: var(--accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 4px;
  margin-left: auto;
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--fg);
  transition: transform 220ms ease, opacity 220ms ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

@media (max-width: 980px) {
  .topbar-inner {
    flex-wrap: wrap;
  }
  .nav-toggle {
    display: flex;
    order: 2;
  }
  .primary-nav {
    order: 4;
    flex: 1 0 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height 280ms ease;
  }
  .primary-nav[data-open="true"] {
    max-height: 600px;
  }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 0 4px;
    width: 100%;
  }
  .nav-list > li {
    border-top: 1px solid var(--rule-soft);
  }
  .nav-link {
    width: 100%;
    padding: 14px 4px;
    justify-content: space-between;
  }
  .nav-submenu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    border: none;
    box-shadow: none;
    padding: 0 0 8px 16px;
    background: transparent;
    display: none;
  }
  .nav-group[data-open="true"] .nav-submenu {
    display: block;
  }
  .topbar-actions {
    order: 3;
    margin-left: auto;
  }
}

  /* Active nav state — Primary topbar item and submenu item indicating current page. */
  .nav-link[aria-current="page"] {
    color: var(--accent);
  }
  .nav-link[aria-current="page"]::after {
    content: '';
    display: block;
    height: 2px;
    margin-top: 4px;
    background: var(--accent);
  }
  .nav-submenu a[aria-current="page"] {
    color: var(--accent);
    background: var(--bg-alt);
  }

  /* "See all features" inline CTA used at the foot of landing's capability section. */
  .capabilities-cta {
    margin-top: 28px;
    text-align: right;
  }
  .capabilities-cta a {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid var(--accent);
    padding-bottom: 2px;
    transition: opacity 0.15s ease;
  }
  .capabilities-cta a:hover {
    opacity: 0.7;
  }

  /* Linkable feature tile (used on /features page). The wrapping <a> sits inside
     a .capability so it inherits all tile chrome; this just makes the whole tile
     clickable, removes default link styling, and adds a subtle hover affordance. */
  .capability:has(> .feature-card-link) {
    position: relative;
    transition: background-color 0.15s ease;
  }
  .capability:has(> .feature-card-link:hover) {
    background: var(--bg-alt);
  }
  .feature-card-link {
    display: block;
    height: 100%;
    color: inherit;
    text-decoration: none;
  }
  .feature-card-link::after {
    content: '→';
    position: absolute;
    right: 24px;
    bottom: 22px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    color: var(--accent);
    opacity: 0.55;
    transition: transform 0.15s ease, opacity 0.15s ease;
  }
  .feature-card-link:hover::after {
    opacity: 1;
    transform: translateX(3px);
  }
  .feature-card-link:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: -2px;
  }