:root {
  color-scheme: light;
  --bg: #f3f6f0;
  --panel: rgba(255, 255, 255, 0.86);
  --panel-strong: rgba(255, 255, 255, 0.94);
  --panel-soft: #edf2ea;
  --ink: #1b241f;
  --muted: #5b6a61;
  --line: rgba(78, 99, 83, 0.12);
  --line-strong: rgba(78, 99, 83, 0.2);
  --brand: #86bc8d;
  --brand-strong: #4f8258;
  --accent: #d7b56d;
  --shadow: 0 24px 100px rgba(35, 51, 40, 0.12);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --max-width: 1260px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(134, 188, 141, 0.26), transparent 28%),
    radial-gradient(circle at top right, rgba(215, 181, 109, 0.18), transparent 24%),
    linear-gradient(180deg, #f7faf5 0%, var(--bg) 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

.page-shell {
  width: 100%;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 24px;
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--brand) 0%, #c7e3ca 100%);
  color: #17341f;
}

.brand-word {
  font-size: 20px;
}

.topnav {
  display: inline-flex;
  gap: 18px;
  color: var(--muted);
}

.topnav a:hover {
  color: var(--ink);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

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

.button-primary {
  background: linear-gradient(135deg, var(--brand-strong) 0%, #688f70 100%);
  color: white;
  box-shadow: 0 14px 30px rgba(79, 130, 88, 0.24);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.7);
  border-color: var(--line);
  color: var(--ink);
}

.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 36px 24px 56px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(320px, 450px) 1fr;
  gap: 34px;
  align-items: start;
  padding-top: 28px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(134, 188, 141, 0.16);
  color: #2f5a3a;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2,
.cta-card h2 {
  margin: 18px 0 14px;
  line-height: 0.97;
  letter-spacing: -0.05em;
}

.hero h1 {
  font-size: clamp(46px, 7vw, 84px);
}

.section-heading h2,
.cta-card h2 {
  font-size: clamp(32px, 4.6vw, 54px);
}

.hero-text,
.section-heading p,
.cta-card p,
.feature-card p,
.timeline-step p,
.task-card p,
.panel-card p {
  color: var(--muted);
  line-height: 1.75;
  font-size: 17px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 24px;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.trust-row li {
  padding: 9px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.5);
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.app-stage {
  min-width: 0;
}

.window,
.feature-card,
.task-card,
.timeline-step,
.panel-card,
.cta-card {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.window {
  overflow: hidden;
  border-radius: var(--radius-xl);
}

.window-toolbar {
  display: flex;
  align-items: center;
  gap: 16px;
  justify-content: space-between;
  min-height: 64px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.68);
}

.traffic-lights {
  display: inline-flex;
  gap: 8px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
}

.dot.red { background: #ff5f56; }
.dot.amber { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.window-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--muted);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(134, 188, 141, 0.14);
  color: #355640;
  font-size: 13px;
  font-weight: 700;
}

.window-body {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr) 270px;
  min-height: 640px;
}

.pane {
  min-width: 0;
  padding: 18px;
}

.pane + .pane {
  border-left: 1px solid var(--line);
}

.pane-left {
  background: rgba(247, 250, 246, 0.86);
}

.pane-right {
  background: rgba(248, 250, 247, 0.9);
}

.pane-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  font-size: 13px;
  color: var(--muted);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.pane-meta {
  color: #809082;
}

.list-group {
  display: grid;
  gap: 10px;
}

.list-item,
.question-tab,
.switch-chip,
.readiness-chip {
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 180ms ease;
}

.list-item {
  display: grid;
  gap: 6px;
  width: 100%;
  padding: 14px;
  border-radius: var(--radius-md);
  background: transparent;
  text-align: left;
}

.list-item strong {
  font-size: 15px;
}

.list-item span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.list-item:hover,
.list-item.is-active {
  background: var(--panel-strong);
  border-color: var(--line-strong);
}

.mini-card {
  margin-top: 18px;
  padding: 16px;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(134, 188, 141, 0.16), rgba(255, 255, 255, 0.85));
  border: 1px solid rgba(79, 130, 88, 0.16);
}

.mini-card-label {
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mini-card-value {
  line-height: 1.65;
  font-size: 14px;
}

.question-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.question-tab,
.switch-chip,
.readiness-chip {
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
}

.question-tab:hover,
.question-tab.is-active,
.switch-chip:hover,
.switch-chip.is-active,
.readiness-chip:hover,
.readiness-chip.is-active {
  color: var(--ink);
  border-color: var(--line-strong);
  background: white;
}

.chat-card {
  display: grid;
  gap: 14px;
}

.bubble {
  max-width: 100%;
  padding: 18px;
  border-radius: 20px;
  line-height: 1.7;
}

.bubble-user {
  justify-self: end;
  background: #202d24;
  color: white;
}

.bubble-assistant {
  background: rgba(237, 242, 234, 0.94);
  border: 1px solid var(--line);
}

.bubble-label {
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 800;
  color: var(--brand-strong);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.bubble-assistant p {
  margin: 0;
}

.answer-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.answer-tags span {
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}

.composer {
  display: grid;
  gap: 12px;
  margin-top: 20px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--line);
}

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

.composer-model span {
  font-size: 14px;
  font-weight: 700;
}

.model-switch {
  display: inline-flex;
  gap: 8px;
}

.composer-note {
  color: var(--muted);
  line-height: 1.7;
  font-size: 14px;
}

.source-card {
  padding: 16px;
  border-radius: var(--radius-md);
  background: white;
  border: 1px solid var(--line);
}

.source-card + .source-card,
.status-stack {
  margin-top: 12px;
}

.source-card.subtle {
  background: rgba(255, 255, 255, 0.7);
}

.source-title {
  font-size: 15px;
  font-weight: 800;
}

.source-location {
  margin-top: 6px;
  color: var(--brand-strong);
  font-size: 13px;
  font-weight: 700;
}

.source-snippet {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.status-stack {
  display: grid;
  gap: 10px;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 26px;
}

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

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

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

.feature-card,
.task-card,
.timeline-step,
.panel-card {
  padding: 22px;
  border-radius: var(--radius-lg);
}

.feature-card h3,
.task-card h3,
.timeline-step h3,
.panel-card h3 {
  margin: 0 0 10px;
  font-size: 22px;
  letter-spacing: -0.04em;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  border-radius: 14px;
  background: rgba(134, 188, 141, 0.16);
  color: var(--brand-strong);
  font-weight: 800;
}

.split-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.cta-card {
  padding: 34px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(242, 247, 241, 0.96)),
    radial-gradient(circle at top right, rgba(215, 181, 109, 0.2), transparent 30%);
}

@media (max-width: 1180px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .window-body {
    grid-template-columns: 220px minmax(0, 1fr);
  }

  .pane-right {
    grid-column: 1 / -1;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

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

@media (max-width: 880px) {
  .topbar {
    flex-wrap: wrap;
  }

  .topnav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .window-body {
    grid-template-columns: 1fr;
  }

  .pane + .pane {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .three-up,
  .four-up,
  .timeline,
  .split-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .section {
    padding-inline: 16px;
  }

  .window-toolbar {
    flex-wrap: wrap;
    align-items: center;
  }

  .question-tabs,
  .hero-actions,
  .trust-row,
  .model-switch {
    gap: 10px;
  }

  .button,
  .question-tab,
  .switch-chip,
  .readiness-chip {
    width: 100%;
  }

  .hero h1 {
    font-size: 44px;
  }
}