:root {
  --bg: #f4f1ea;
  --ink: #1b201d;
  --muted: #5f695f;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-2: rgba(255, 255, 255, 0.74);
  --line: rgba(0, 0, 0, 0.08);
  --brand: #1e5b47;
  --accent: #c08b39;
  --on-brand: #ffffff;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.08);
  --radius: 18px;
  --font-body: system-ui, sans-serif;
  --font-display: system-ui, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, monospace;
  --shell: 1180px;
}

html[data-theme="dark"] {
  --bg: #0c1110;
  --ink: #eaf3ee;
  --muted: #a7b9af;
  --surface: rgba(17, 24, 22, 0.92);
  --surface-2: rgba(21, 30, 27, 0.9);
  --line: rgba(177, 208, 188, 0.18);
  --brand: #86dfbc;
  --accent: #f4c15f;
  --on-brand: #07110d;
  --shadow: 0 20px 45px rgba(0, 0, 0, 0.36);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--font-body);
}

a { color: inherit; }

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--accent) 72%, white 28%);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -40px;
  z-index: 100;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  text-decoration: none;
  font-weight: 700;
}
.skip-link:focus {
  top: 10px;
}

.shell {
  width: min(var(--shell), calc(100% - 24px));
  margin-inline: auto;
}

.topbar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 14px 0 10px;
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
}

.back-link {
  text-decoration: none;
  font-weight: 700;
  font-size: 0.86rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  background: var(--surface);
}

.version-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  font-size: 0.86rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  background: var(--surface);
}
.version-switch a {
  text-decoration: none;
  color: var(--muted);
  line-height: 1;
}
.version-switch a:hover {
  color: var(--ink);
}
.version-switch a.is-active {
  color: var(--brand);
}
.version-switch span {
  color: var(--muted);
  opacity: 0.75;
}

.brand-wrap { min-width: 0; }
.brand {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--brand);
}
.brand-sub {
  color: var(--muted);
  font-size: 0.82rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.top-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.pill {
  text-decoration: none;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 999px;
  padding: 8px 12px;
  font-weight: 700;
  font-size: 0.8rem;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.42rem;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 999px;
  min-width: 6.4rem;
  height: 1.95rem;
  padding: 0.2rem 0.45rem;
  color: var(--ink);
  cursor: pointer;
}

.build-version {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  border-radius: 999px;
  padding: 0.32rem 0.62rem;
  font-size: 0.74rem;
  font-weight: 700;
  line-height: 1;
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.theme-toggle .toggle-track {
  width: 2.95rem;
  height: 100%;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface-2);
  position: relative;
}

.theme-toggle .toggle-label {
  font-size: 0.7rem;
  font-weight: 700;
  line-height: 1;
  color: var(--muted);
  min-width: 1.9rem;
  text-align: center;
}

.theme-toggle .toggle-thumb {
  position: absolute;
  top: 0.12rem;
  left: 0.15rem;
  width: 1.2rem;
  height: 1.2rem;
  border-radius: 999px;
  background: var(--ink);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.24);
  transition: transform 180ms ease, background 180ms ease;
}

.theme-toggle[aria-pressed="true"] .toggle-track {
  background: color-mix(in srgb, var(--accent) 72%, var(--surface-2) 28%);
}

.theme-toggle[aria-pressed="true"] .toggle-thumb {
  transform: translateX(1.28rem);
  background: color-mix(in srgb, var(--on-brand) 35%, #ffffff 65%);
}

.theme-toggle[aria-pressed="true"] .toggle-label-dark,
.theme-toggle[aria-pressed="false"] .toggle-label-light {
  color: var(--ink);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 999px;
  padding: 3px;
}

.lang-flag {
  width: 34px;
  height: 30px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
  font-size: 0.95rem;
  line-height: 1;
}
.lang-flag.is-active {
  background: var(--brand);
  box-shadow: 0 5px 12px rgba(0, 0, 0, 0.14);
}

.page-flow {
  display: grid;
  gap: 16px;
  padding-bottom: 40px;
}

.review-banner,
.panel,
.hero {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.review-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  color: var(--ink);
}
.review-banner strong {
  font-size: 0.76rem;
  font-weight: 800;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(0,0,0,0.06);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.review-banner span {
  color: var(--muted);
  line-height: 1.35;
  font-size: 0.9rem;
}
.review-banner .variant-tag {
  margin-left: auto;
  font-family: var(--font-mono);
  color: var(--brand);
  font-style: normal;
  font-size: 0.8rem;
}

.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding: 18px;
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--brand);
}
.hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.04;
}
.hero-lead {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.45;
  margin: 12px 0 0;
  max-width: 62ch;
}
.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: 999px;
  padding: 10px 14px;
  font-weight: 800;
  font-size: 0.9rem;
  border: 1px solid var(--line);
  transition: transform 140ms ease, box-shadow 140ms ease, background-color 140ms ease;
}
.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.12);
}
.btn.primary { background: var(--brand); color: white; border-color: transparent; }
.btn.secondary { background: var(--surface-2); color: var(--ink); }
.btn.primary { color: var(--on-brand); }

html[data-theme="dark"] .back-link,
html[data-theme="dark"] .version-switch,
html[data-theme="dark"] .pill,
html[data-theme="dark"] .theme-toggle,
html[data-theme="dark"] .lang-switch {
  background: rgba(12, 18, 16, 0.96);
  border-color: rgba(177, 208, 188, 0.34);
  color: #eaf3ee;
}

html[data-theme="dark"] .btn.secondary {
  background: rgba(12, 18, 16, 0.96);
  border-color: rgba(177, 208, 188, 0.34);
  color: #eaf3ee;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 16px;
}
.metric {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-2);
  padding: 10px;
  display: grid;
  gap: 4px;
}
.metric span { color: var(--muted); font-size: 0.75rem; }
.metric strong { font-size: 0.88rem; line-height: 1.2; }

.hero-art {
  position: relative;
  min-height: 330px;
  display: grid;
  grid-template-rows: 1fr auto;
  align-content: stretch;
  gap: 10px;
  padding: 0;
  overflow: hidden;
  border-radius: calc(var(--radius) - 4px);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,0.5), rgba(255,255,255,0.2));
}
.compare-slider {
  --split: 50%;
  position: relative;
  z-index: 1;
  align-self: stretch;
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.72);
}
.compare-slider img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.compare-after {
  position: absolute;
  inset: 0;
  clip-path: inset(0 calc(100% - var(--split)) 0 0);
}
.compare-label {
  position: absolute;
  top: 10px;
  padding: 5px 8px;
  border-radius: 999px;
  border: 1px solid rgba(0,0,0,0.08);
  background: rgba(255,255,255,0.82);
  font-size: 0.72rem;
  font-weight: 800;
  color: #1a2420;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  z-index: 3;
}
.compare-label.before { left: 10px; }
.compare-label.after { right: 10px; }
.compare-divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--split);
  transform: translateX(-50%);
  width: 2px;
  background: rgba(255,255,255,0.92);
  box-shadow: 0 0 0 1px rgba(0,0,0,0.2);
  z-index: 3;
  pointer-events: none;
}
.compare-divider::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 28px;
  height: 28px;
  transform: translate(-50%, -50%);
  border-radius: 999px;
  border: 2px solid rgba(255,255,255,0.92);
  background: rgba(12, 22, 19, 0.7);
  box-shadow: 0 8px 18px rgba(0,0,0,0.24);
}
.compare-range {
  position: absolute;
  inset: 0;
  z-index: 4;
  margin: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: ew-resize;
}
.art-frame {
  position: absolute;
  border-radius: 20px;
  border: 1px solid var(--line);
}
.frame-a {
  width: 62%; height: 62%; left: 10%; top: 12%;
  background: linear-gradient(160deg, rgba(192,139,57,0.16), rgba(30,91,71,0.08));
  transform: rotate(-6deg);
}
.frame-b {
  width: 58%; height: 58%; right: 10%; bottom: 12%;
  background: linear-gradient(160deg, rgba(30,91,71,0.15), rgba(30,91,71,0.05));
  transform: rotate(8deg);
}
.art-note {
  position: relative;
  z-index: 2;
  justify-self: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
  font-weight: 700;
}

.panel { padding: 18px; }
.panel-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 2vw, 2.1rem);
  line-height: 1;
}

.stage-grid {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.stage-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-2);
  padding: 14px;
}
.stage-card.emphasis {
  background: linear-gradient(180deg, rgba(30,91,71,0.95), rgba(30,91,71,0.86));
  color: white;
  border-color: rgba(255,255,255,0.1);
}
.stage-card.emphasis p { color: rgba(255,255,255,0.88); }
.stage-num {
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
}
.stage-card h3 { margin: 2px 0 6px; font-size: 1rem; }
.stage-card p { margin: 0; color: var(--muted); line-height: 1.4; }

.pricing-grid {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.price-card {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-2);
  padding: 13px;
  display: grid;
  gap: 6px;
  align-content: start;
}
.price-card.premium { border-color: color-mix(in srgb, var(--accent) 60%, var(--line)); }
.price-card span { font-size: 0.76rem; font-weight: 800; color: var(--brand); text-transform: uppercase; letter-spacing: 0.08em; }
.price-card h3 { margin: 0; font-size: 1rem; }
.price { margin: 0; font-family: var(--font-display); font-size: 1.55rem; font-weight: 700; }
.price-card small { color: var(--muted); line-height: 1.35; }

.process-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.process-list li {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 12px;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--surface-2);
}
.process-list li > span {
  width: 42px; height: 42px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px;
  background: rgba(30,91,71,0.08);
  color: var(--brand);
  font-weight: 800;
}
.process-list h3 { margin: 2px 0 4px; font-size: 1rem; }
.process-list p { margin: 0; color: var(--muted); line-height: 1.35; }

.cta {
  display: grid;
  grid-template-columns: 1.1fr auto;
  gap: 16px;
  align-items: center;
}
.cta h2 { margin: 0; font-family: var(--font-display); font-size: clamp(1.5rem, 2vw, 2rem); line-height: 1; }
.cta p:not(.eyebrow) { margin: 10px 0 0; color: var(--muted); line-height: 1.4; }

@media (max-width: 1000px) {
  .hero { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .cta { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .topbar {
    grid-template-columns: 1fr;
    gap: 8px;
    padding-top: 10px;
  }
  .brand-sub { white-space: normal; }
  .top-actions { justify-content: flex-start; }
  .review-banner { flex-direction: column; align-items: flex-start; }
  .review-banner .variant-tag { margin-left: 0; }
  .hero, .panel { padding: 14px; }
  .metrics, .stage-grid, .pricing-grid { grid-template-columns: 1fr; }
  .process-list li { grid-template-columns: 42px 1fr; gap: 10px; }
  .process-list li > span { width: 36px; height: 36px; }
  .hero-art {
    min-height: auto;
    border: 0;
    background: transparent;
    overflow: visible;
  }
  .compare-slider {
    width: 100%;
    margin-inline: 0;
    border-radius: 12px;
    aspect-ratio: 16 / 9;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}