:root {
  color-scheme: light dark;
  --ink: #20242b;
  --muted: #66707d;
  --paper: #f7f2ea;
  --surface: #fffdf8;
  --surface-strong: #ffffff;
  --line: #ded6c9;
  --violet: #735aa6;
  --violet-strong: #56417e;
  --green: #438a78;
  --green-soft: #dfeee8;
  --coral: #bf6b5b;
  --amber: #c1843f;
  --blue: #4e7398;
  --shadow: 0 26px 70px rgba(45, 36, 29, 0.16);
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f4f0ea;
    --muted: #b9b2c5;
    --paper: #17151c;
    --surface: #211e29;
    --surface-strong: #282432;
    --line: #3a3445;
    --violet: #bda1ed;
    --violet-strong: #dacdff;
    --green: #76c6b2;
    --green-soft: #20382f;
    --coral: #e59a8b;
    --amber: #efba75;
    --blue: #90b5da;
    --shadow: 0 26px 70px rgba(0, 0, 0, 0.34);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--green) 13%, transparent), transparent 420px),
    linear-gradient(135deg, color-mix(in srgb, var(--violet) 8%, transparent), transparent 620px),
    var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
}

.site-header,
.site-footer,
.hero-stage,
.section,
.legal-page {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header,
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.site-header {
  position: relative;
  z-index: 4;
  padding: 22px 0 14px;
}

.site-footer {
  padding: 30px 0 42px;
  color: var(--muted);
  font-size: 14px;
}

.site-footer div {
  display: flex;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 780;
  letter-spacing: 0;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(49, 39, 67, 0.18);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 640;
}

.nav-links a {
  text-decoration: none;
}

.nav-links a:hover,
.site-footer a:hover {
  color: var(--violet-strong);
}

.hero-stage {
  position: relative;
  min-height: clamp(620px, calc(100svh - 148px), 760px);
  display: flex;
  align-items: center;
  padding: 52px 0 102px;
  overflow: hidden;
}

.hero-copy {
  position: relative;
  z-index: 2;
  width: min(570px, 100%);
}

.hero-icon {
  width: 92px;
  height: 92px;
  margin-bottom: 20px;
  border-radius: 18px;
  box-shadow: 0 24px 50px rgba(73, 54, 110, 0.2);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p,
li,
strong,
span {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  font-size: 82px;
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  font-size: 36px;
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 10px;
  font-size: 19px;
  line-height: 1.22;
  letter-spacing: 0;
}

.lead {
  max-width: 600px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 22px;
  line-height: 1.52;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 760;
  line-height: 1;
}

.button.primary {
  color: #fff;
  background: var(--violet);
  box-shadow: 0 14px 30px rgba(86, 65, 126, 0.22);
}

.button.secondary {
  color: var(--violet-strong);
  border: 1px solid color-mix(in srgb, var(--violet) 36%, var(--line));
  background: color-mix(in srgb, var(--surface) 88%, transparent);
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.trust-row span {
  padding: 8px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: color-mix(in srgb, var(--surface) 76%, transparent);
  font-size: 13px;
  font-weight: 700;
}

.product-scene {
  position: absolute;
  z-index: 1;
  inset: 34px 0 56px min(410px, 38%);
  pointer-events: none;
}

.scene-window {
  position: absolute;
  right: 0;
  top: 42px;
  width: min(720px, 100%);
  min-height: 492px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface-strong) 92%, transparent);
  box-shadow: var(--shadow);
}

.window-titlebar {
  height: 52px;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 78%, var(--paper));
}

.window-titlebar span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--muted) 36%, transparent);
}

.window-titlebar strong {
  margin-left: 10px;
  color: var(--muted);
  font-size: 13px;
}

.dashboard-layout {
  display: grid;
  grid-template-columns: 84px 1fr;
  min-height: 440px;
}

.dashboard-nav {
  display: grid;
  align-content: start;
  gap: 14px;
  padding: 26px 18px;
  border-right: 1px solid var(--line);
  background: color-mix(in srgb, var(--green) 10%, var(--surface));
}

.nav-dot {
  height: 44px;
  border-radius: 8px;
  background: color-mix(in srgb, var(--muted) 16%, transparent);
}

.nav-dot.active {
  background: var(--green);
}

.dashboard-main {
  padding: 30px;
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.metric-strip div,
.study-card,
.answer,
.floating-panel,
.feature-grid article,
.plan-card,
.scenario-list div {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
}

.metric-strip div {
  padding: 16px;
}

.metric-strip small,
.panel-kicker,
.card-tag,
.feature-number,
.plan-top span,
.scenario-list span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0;
  text-transform: uppercase;
}

.metric-strip strong {
  display: block;
  margin-top: 8px;
  font-size: 26px;
}

.study-card {
  margin-top: 14px;
  padding: 24px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--green) 18%, transparent), transparent 72%),
    color-mix(in srgb, var(--surface) 90%, transparent);
}

.study-card h2 {
  margin-top: 12px;
  font-size: 30px;
}

.study-card p {
  max-width: 520px;
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.55;
}

.answer-stack {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.answer {
  min-height: 46px;
  display: flex;
  align-items: center;
  padding: 0 16px;
  color: var(--muted);
  font-weight: 700;
}

.answer.correct {
  color: var(--ink);
  border-color: color-mix(in srgb, var(--green) 44%, var(--line));
  background: var(--green-soft);
}

.floating-panel {
  position: absolute;
  padding: 16px;
  box-shadow: 0 18px 42px rgba(39, 31, 52, 0.14);
}

.floating-panel strong {
  display: block;
  margin-top: 6px;
}

.floating-panel p {
  max-width: 220px;
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.ai-panel {
  right: 28px;
  bottom: 4px;
  width: 284px;
}

.sync-panel {
  left: 28px;
  top: 0;
  width: 276px;
}

.section {
  padding: 72px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  max-width: 680px;
}

.feature-grid,
.plan-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 28px;
}

.feature-grid article {
  min-height: 210px;
  padding: 24px;
}

.feature-number {
  display: inline-block;
  margin-bottom: 26px;
  color: var(--coral);
}

.feature-grid p,
.showcase-copy p,
.notice-section p,
.legal-page p,
.plan-card li {
  color: var(--muted);
  line-height: 1.65;
}

.showcase-band,
.notice-section,
.cta-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1fr);
  gap: 44px;
  align-items: start;
}

.showcase-copy p {
  margin-top: 18px;
}

.scenario-list {
  display: grid;
  gap: 12px;
}

.scenario-list div {
  display: grid;
  grid-template-columns: minmax(110px, 0.38fr) 1fr;
  gap: 18px;
  padding: 18px;
}

.scenario-list strong {
  color: var(--ink);
}

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

.plan-card {
  padding: 24px;
}

.featured-plan {
  border-color: color-mix(in srgb, var(--violet) 54%, var(--line));
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--violet) 15%, transparent), transparent),
    color-mix(in srgb, var(--surface) 90%, transparent);
}

.plan-top {
  display: grid;
  gap: 8px;
}

.plan-top strong {
  font-size: 24px;
}

.plan-card ul {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.plan-card li {
  position: relative;
  padding-left: 20px;
}

.plan-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
}

.notice-section {
  border-top-color: color-mix(in srgb, var(--amber) 36%, var(--line));
}

.cta-section {
  align-items: center;
}

.cta-actions {
  justify-content: flex-end;
  margin-top: 0;
}

.legal-page {
  max-width: 820px;
  padding: 62px 0 82px;
}

.legal-page h1 {
  margin: 0 0 28px;
  font-size: 52px;
}

.legal-page h2 {
  margin: 34px 0 0;
  font-size: 24px;
}

.mail-link {
  color: var(--violet-strong);
  font-size: 22px;
  font-weight: 780;
}

@media (max-width: 940px) {
  .nav-links {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .hero-stage {
    min-height: auto;
    display: block;
    padding: 40px 0 68px;
    overflow: visible;
  }

  .product-scene {
    position: relative;
    inset: auto;
    min-height: 520px;
    margin-top: 34px;
  }

  .scene-window {
    left: 0;
    right: 0;
    top: 44px;
    width: 100%;
  }

  .sync-panel {
    left: 14px;
  }

  .ai-panel {
    right: 14px;
  }

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

@media (max-width: 720px) {
  .site-header,
  .site-footer,
  .hero-stage,
  .section,
  .legal-page {
    width: min(100% - 28px, 1160px);
  }

  .site-header,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    justify-content: flex-start;
    gap: 12px;
  }

  h1 {
    font-size: 54px;
  }

  h2 {
    font-size: 29px;
  }

  .lead {
    font-size: 18px;
  }

  .hero-icon {
    width: 74px;
    height: 74px;
    border-radius: 14px;
  }

  .product-scene {
    min-height: 560px;
  }

  .scene-window {
    min-height: 468px;
  }

  .dashboard-layout {
    grid-template-columns: 1fr;
  }

  .dashboard-nav {
    display: none;
  }

  .dashboard-main {
    padding: 18px;
  }

  .metric-strip,
  .plan-grid,
  .showcase-band,
  .notice-section,
  .cta-section {
    grid-template-columns: 1fr;
  }

  .study-card h2 {
    font-size: 24px;
  }

  .floating-panel {
    position: relative;
    left: auto;
    right: auto;
    top: auto;
    bottom: auto;
    width: 100%;
    margin-top: 12px;
  }

  .scenario-list div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .cta-actions {
    justify-content: flex-start;
  }

  .legal-page h1 {
    font-size: 40px;
  }
}