:root {
  --font-display: "Bahnschrift", "Segoe UI Variable Display", "Trebuchet MS", sans-serif;
  --font-body: "Aptos", "Segoe UI Variable Text", "Tahoma", sans-serif;
  --bg: #f2efe7;
  --bg-strong: #e5dfd1;
  --paper: rgba(255, 251, 244, 0.82);
  --paper-strong: rgba(255, 251, 244, 0.95);
  --text: #17201e;
  --muted: #5d6862;
  --line: rgba(23, 32, 30, 0.12);
  --accent: #1f8c63;
  --accent-soft: #d7efe4;
  --shadow: 0 24px 56px rgba(54, 44, 26, 0.12);
}

:root[data-theme="dark"] {
  --bg: #111513;
  --bg-strong: #17201c;
  --paper: rgba(24, 30, 28, 0.82);
  --paper-strong: rgba(24, 30, 28, 0.96);
  --text: #edf3ef;
  --muted: #a9b8af;
  --line: rgba(237, 243, 239, 0.1);
  --accent: #6fd2a3;
  --accent-soft: rgba(111, 210, 163, 0.14);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.32);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }

body {
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(31, 140, 99, 0.14), transparent 24%),
    radial-gradient(circle at 88% 14%, rgba(103, 94, 67, 0.16), transparent 18%),
    linear-gradient(180deg, var(--bg-strong) 0%, var(--bg) 36%, var(--bg) 100%);
}

.site-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.7), transparent 80%);
  opacity: 0.3;
}

a { color: inherit; }
button { font: inherit; }

.container {
  width: min(1160px, calc(100vw - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  border-bottom: 1px solid var(--line);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 78px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.brand-mark {
  display: inline-flex;
  width: clamp(132px, 18vw, 188px);
}

.brand-logo {
  width: 100%;
  height: auto;
  display: block;
}

.brand-logo-light { display: none; }
:root:not([data-theme="dark"]) .brand-logo-dark { display: none; }
:root:not([data-theme="dark"]) .brand-logo-light { display: block; }

.brand-text {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.74rem;
}

.nav-panel,
.nav-links,
.button-row,
.footer-links,
.status-meta,
.card-actions,
.download-actions,
.support-links {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-panel { margin-left: auto; }

.nav-links a,
.footer-links a,
.text-link,
.inline-link {
  text-decoration: none;
}

.nav-links a {
  color: var(--muted);
  padding: 8px 0;
}

.nav-links a:hover,
.nav-links a.is-current,
.footer-links a:hover,
.text-link:hover,
.inline-link:hover {
  color: var(--text);
}

.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  margin: 6px auto;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--text);
  border-radius: 999px;
  padding: 8px 12px;
  cursor: pointer;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  overflow: hidden;
}

.lang-switch a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 700;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  padding: 7px 10px;
  text-transform: uppercase;
}

.lang-switch a.is-current {
  color: var(--text);
  background: color-mix(in srgb, var(--text) 10%, transparent);
}

.theme-toggle-track {
  width: 38px;
  height: 22px;
  display: flex;
  align-items: center;
  padding: 3px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--text) 16%, transparent);
}

.theme-toggle-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--text);
  transform: translateX(16px);
  transition: transform 0.18s ease;
}

:root[data-theme="dark"] .theme-toggle-thumb { transform: translateX(0); }

.section {
  padding: 38px 0;
  position: relative;
}

.hero {
  padding-top: 68px;
}

/* Centered homepage hero (DiRoots-style) */
.hero-center {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 78px);
  text-align: center;
}

.hero-center-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

.brand-mark-hero {
  display: inline-flex;
  width: clamp(220px, 32vw, 400px);
}

.hero-tagline {
  font-family: var(--font-display);
  font-size: clamp(0.9rem, 1.6vw, 1.2rem);
  color: var(--muted);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0;
}

.button-row-center {
  justify-content: center;
}

.pill-inline {
  display: inline-block;
  font-size: 0.62rem;
  padding: 1px 7px;
  border-radius: 4px;
  vertical-align: middle;
  margin-left: 6px;
  line-height: 1.6;
  background: rgba(143, 114, 14, 0.14);
  color: #7a5f00;
}

:root[data-theme="dark"] .pill-inline {
  background: rgba(255, 190, 30, 0.15);
  color: #f0c84a;
}

.hero-grid,
.split-grid,
.footer-grid,
.detail-grid,
.download-grid,
.docs-grid,
.workflow-strip,
.page-grid {
  display: grid;
  gap: 24px;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  align-items: start;
}

.page-grid,
.split-grid,
.detail-grid,
.download-grid,
.docs-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.docs-stack {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-bottom: 20px;
}

.footer-grid {
  grid-template-columns: minmax(0, 1.2fr) auto;
  align-items: start;
}

.workflow-strip {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  color: var(--muted);
}

h1, h2, h3, h4, p { margin: 0; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  letter-spacing: -0.04em;
}

h1 {
  max-width: 11ch;
  font-size: clamp(3.1rem, 7vw, 6rem);
  line-height: 0.92;
}

body[data-page="products"] .page-hero h1 {
  max-width: none;
  white-space: normal;
  text-wrap: balance;
  font-size: clamp(1.9rem, 3.8vw, 3.2rem);
  line-height: 1.04;
}

/* Product detail hero slogans should be more compact. */
body[data-page="a2s"] .page-hero h1,
body[data-page="arctools"] .page-hero h1 {
  max-width: none;
  font-size: clamp(1.85rem, 3.6vw, 3rem);
  line-height: 1.02;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 0.97;
}

h3 {
  font-size: 1.34rem;
  line-height: 1.05;
}

h4 {
  font-size: 1rem;
  line-height: 1.12;
}

.lead,
.section-copy,
.product-card p,
.mini-card p,
.feature-card p,
.status-card p,
.docs-card p,
.workflow-card p,
.footer-copy,
.metric-card p,
.download-card p,
.copy-stack p,
.note-box p,
.demo-card p,
.about-card p {
  color: var(--muted);
}

.lead {
  max-width: 58ch;
  margin-top: 18px;
  font-size: 1.06rem;
}

.section-heading {
  display: grid;
  gap: 10px;
  margin-bottom: 24px;
  max-width: 760px;
}

.hero-panel,
.product-card,
.note-box,
.feature-card,
.status-card,
.workflow-card,
.metric-card,
.download-card,
.docs-card,
.demo-card,
.about-card,
.copy-stack {
  border: 1px solid var(--line);
  background: var(--paper);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.hero-panel,
.product-card,
.feature-card,
.status-card,
.workflow-card,
.metric-card,
.download-card,
.docs-card,
.demo-card,
.about-card,
.copy-stack {
  padding: 24px;
}

.note-box {
  padding: 26px;
  background: color-mix(in srgb, var(--accent-soft) 70%, var(--paper));
}

.hero-panel {
  display: grid;
  gap: 18px;
}

.panel-title {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.8rem;
  color: var(--muted);
}

.mini-stack,
.card-grid,
.feature-grid,
.metrics-grid,
.docs-list,
.about-grid {
  display: grid;
  gap: 18px;
}

.cards-2,
.about-grid,
.docs-list,
.feature-grid,
.metrics-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mini-card {
  padding: 18px;
  border-radius: 22px;
  background: var(--paper-strong);
  border: 1px solid var(--line);
}

.mini-card h2 {
  font-size: 1.5rem;
  margin: 12px 0 8px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
}

.pill-free {
  background: color-mix(in srgb, var(--accent-soft) 82%, transparent);
  color: var(--accent);
}

.pill-wip {
  background: rgba(179, 114, 25, 0.12);
  color: #a86518;
}

:root[data-theme="dark"] .pill-wip {
  background: rgba(226, 166, 85, 0.14);
  color: #f0c37d;
}

.pill-neutral {
  background: rgba(90, 103, 98, 0.14);
  color: var(--muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 12px 18px;
  border-radius: 16px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--text);
  color: var(--bg);
}

.btn-secondary {
  background: transparent;
  border-color: var(--line);
  color: var(--text);
}

.button-row {
  margin-top: 28px;
}

.text-link,
.inline-link {
  color: var(--accent);
  font-weight: 700;
}

.card-topline,
.status-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.product-card,
.feature-card,
.workflow-card,
.download-card,
.docs-card,
.about-card,
.metric-card {
  display: grid;
  gap: 14px;
}

/* Keep product CTA row stable on desktop so cards stay visually balanced. */
.product-card .card-actions {
  flex-wrap: nowrap;
  align-items: stretch;
}

.product-card .card-actions .btn {
  min-height: 50px;
}

/* Primary CTA can be longer; let it flex while keeping secondary CTAs compact. */
.product-card .card-actions .btn-primary {
  flex: 1 1 280px;
}

.product-card .card-actions .btn-secondary {
  flex: 0 0 auto;
  white-space: nowrap;
}

.status-card {
  display: grid;
  gap: 18px;
}

.feature-list,
.plain-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.feature-list li,
.plain-list li {
  margin: 8px 0;
}

.compact-list li { margin: 10px 0; }

.page-hero {
  padding-top: 62px;
}

.page-lead {
  max-width: 64ch;
}

.workflow-card {
  grid-template-columns: auto 1fr;
  align-items: start;
}

.step-number {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
}

.demo-card {
  display: grid;
  gap: 18px;
}

.demo-frame {
  padding: 22px;
  border-radius: 22px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--paper-strong) 88%, transparent), color-mix(in srgb, var(--accent-soft) 58%, transparent));
  border: 1px solid var(--line);
}

.demo-steps {
  display: grid;
  gap: 12px;
}

.demo-step {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: start;
}

.demo-step strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--text);
  color: var(--bg);
}

.download-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.meta-chip {
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--paper-strong);
  color: var(--muted);
  font-size: 0.86rem;
}

.support-links {
  flex-wrap: wrap;
}

.site-footer {
  padding: 34px 0 48px;
  border-top: 1px solid var(--line);
  margin-top: 24px;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 920px) {
  .menu-toggle { display: inline-block; }

  .nav-panel {
    position: absolute;
    top: 78px;
    left: 20px;
    right: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: var(--paper-strong);
    box-shadow: var(--shadow);
  }

  .nav-panel.is-open { display: flex; }
  .nav-links { flex-direction: column; align-items: flex-start; }
  .lang-switch { align-self: flex-start; }
  .hero-grid,
  .page-grid,
  .split-grid,
  .detail-grid,
  .download-grid,
  .docs-grid,
  .workflow-strip,
  .cards-2,
  .metrics-grid,
  .docs-list,
  .about-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  h1 { max-width: 13ch; }
}

@media (max-width: 640px) {
  .container { width: min(100vw - 24px, 100%); }
  .nav-shell { min-height: 70px; }
  .section { padding: 28px 0; }
  .hero { padding-top: 42px; }
  .brand-text { display: none; }
  .button-row,
  .download-actions,
  .card-actions,
  .support-links,
  .status-meta {
    flex-direction: column;
    align-items: stretch;
  }
  .btn { width: 100%; }
}