:root {
  color-scheme: light dark;
  --bg: #edf2f7;
  --bg-strong: #dde7f1;
  --surface: rgba(255, 255, 255, 0.72);
  --surface-strong: rgba(255, 255, 255, 0.9);
  --surface-dark: rgba(14, 24, 38, 0.78);
  --ink: #152133;
  --ink-soft: #516076;
  --line: rgba(21, 33, 51, 0.12);
  --line-strong: rgba(21, 33, 51, 0.22);
  --accent: #e0672f;
  --accent-strong: #b84a1b;
  --teal: #1c716b;
  --teal-soft: rgba(28, 113, 107, 0.12);
  --shadow-lg: 0 28px 70px rgba(28, 40, 58, 0.14);
  --shadow-md: 0 16px 38px rgba(28, 40, 58, 0.1);
  --radius-xl: 34px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 999px;
  --content-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: "Instrument Sans", "Avenir Next", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(224, 103, 47, 0.16), transparent 26rem),
    radial-gradient(circle at top right, rgba(28, 113, 107, 0.16), transparent 24rem),
    linear-gradient(180deg, #f7fafc 0%, var(--bg) 54%, #dfe8f0 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(21, 33, 51, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 33, 51, 0.03) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.52), transparent 82%);
}

img {
  display: block;
  max-width: 100%;
}

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

kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.2rem;
  min-height: 2.2rem;
  padding: 0 0.55rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: inset 0 -2px 0 rgba(21, 33, 51, 0.08);
  font: inherit;
  font-size: 0.88rem;
  font-weight: 700;
}

.page-shell {
  position: relative;
  z-index: 1;
  padding-bottom: 2.5rem;
}

.hero,
.section,
.summary-band,
.site-footer,
.info-shell {
  width: min(calc(100% - 32px), var(--content-width));
  margin-inline: auto;
}

.hero {
  padding: 24px 0 56px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.62);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(18px);
  box-shadow: 0 12px 36px rgba(28, 40, 58, 0.08);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.brand-mark img {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  box-shadow: 0 14px 28px rgba(28, 40, 58, 0.18);
}

.nav-links {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 22px;
  color: var(--ink-soft);
  font-size: 0.96rem;
}

.nav-links a {
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  transform: scaleX(1);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.98fr);
  gap: 40px;
  align-items: center;
  padding-top: 56px;
}

.hero-copy h1,
.section-heading h2,
.spotlight-copy h2,
.closing h2,
.info-header h1,
.info-card h2,
.policy-card h2 {
  margin: 0;
  font-family: "Instrument Serif", Georgia, serif;
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 0.96;
}

.hero-copy h1 {
  max-width: 10ch;
  font-size: clamp(3.5rem, 7vw, 6.3rem);
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--teal);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.lede,
.summary-band p,
.feature-card p,
.spotlight-copy p,
.workflow-step p,
.setting-card p,
.shortcut-card p,
.closing p,
.info-header p,
.info-card p,
.info-card li,
.policy-card p,
.policy-card li {
  color: var(--ink-soft);
  line-height: 1.7;
}

.lede {
  max-width: 58ch;
  margin: 22px 0 0;
  font-size: 1.12rem;
}

.hero-actions,
.closing-actions,
.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-weight: 600;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease,
    color 180ms ease;
}

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

.button-primary {
  color: #fff8f3;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  box-shadow: 0 14px 30px rgba(184, 74, 27, 0.22);
}

.button-secondary,
.button-tertiary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.74);
}

.button-tertiary {
  color: var(--ink-soft);
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.hero-points li,
.feature-card,
.workflow-step,
.setting-card,
.shortcut-card,
.info-card,
.policy-card {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.58);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(12px);
}

.hero-points li {
  padding: 16px 18px;
  border-radius: var(--radius-md);
  color: var(--ink);
  font-size: 0.95rem;
}

.hero-visual {
  position: relative;
}

.screen-stack {
  position: relative;
  min-height: 700px;
}

.screen-card,
.gallery-panel {
  overflow: hidden;
  margin: 0;
  border-radius: 30px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.5);
  box-shadow: var(--shadow-lg);
}

.screen-card img,
.gallery-panel img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.screen-main,
.screen-side,
.screen-detail {
  position: absolute;
}

.screen-main {
  top: 40px;
  right: 0;
  width: min(100%, 560px);
  aspect-ratio: 16 / 10;
}

.screen-side {
  left: 8px;
  bottom: 56px;
  width: min(58%, 320px);
  aspect-ratio: 16 / 10;
  transform: rotate(-6deg);
}

.screen-detail {
  right: 54px;
  bottom: 0;
  width: min(46%, 270px);
  aspect-ratio: 16 / 10;
  transform: rotate(4deg);
}

.summary-band {
  margin-bottom: 18px;
  padding: 28px 30px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: var(--radius-xl);
  box-shadow: 0 18px 44px rgba(28, 40, 58, 0.08);
  backdrop-filter: blur(12px);
}

.summary-band p {
  max-width: 64ch;
  margin: 0;
  font-size: 1.06rem;
}

.section {
  padding: 62px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 30px;
}

.section-heading h2,
.spotlight-copy h2,
.closing h2,
.info-header h1 {
  font-size: clamp(2.5rem, 5vw, 4.4rem);
}

.feature-grid,
.workflow-grid,
.settings-grid,
.shortcut-grid,
.info-grid {
  display: grid;
  gap: 18px;
}

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

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

.shortcut-grid,
.info-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature-card,
.workflow-step,
.setting-card,
.shortcut-card,
.info-card,
.policy-card {
  padding: 24px;
  border-radius: var(--radius-lg);
}

.feature-card h3,
.workflow-step h3,
.setting-card h3,
.shortcut-card h3,
.info-card h2,
.policy-card h2,
.policy-card h3 {
  margin: 0 0 10px;
  font-size: 1.15rem;
}

.spotlight {
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(0, 1.04fr);
  gap: 24px;
  align-items: center;
}

.spotlight-copy {
  padding-right: 10px;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.stat {
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.55);
}

.stat strong {
  display: block;
  margin-bottom: 6px;
  font-size: 0.98rem;
}

.stat span {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.spotlight-gallery {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
  gap: 16px;
}

.gallery-wide {
  grid-row: span 2;
  min-height: 100%;
}

.gallery-panel {
  min-height: 240px;
}

.workflow-step span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.8rem;
  height: 2.8rem;
  margin-bottom: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
}

.shortcut-keys {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0;
}

.closing {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 34px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, rgba(224, 103, 47, 0.14), rgba(28, 113, 107, 0.12)),
    rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.56);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(16px);
}

.site-footer {
  padding-top: 8px;
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.info-page {
  padding: 24px 0 40px;
}

.info-shell {
  display: grid;
  gap: 24px;
}

.info-header {
  padding: 28px 30px 8px;
}

.info-header p {
  max-width: 62ch;
  margin: 20px 0 0;
  font-size: 1.04rem;
}

.info-grid {
  align-items: start;
}

.info-card ul,
.policy-card ul {
  margin: 14px 0 0 18px;
  padding: 0;
}

.stack-list {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.stack-item {
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.56);
  border: 1px solid rgba(255, 255, 255, 0.56);
}

.stack-item strong {
  display: block;
  margin-bottom: 4px;
  font-size: 0.98rem;
}

.callout {
  margin-top: 18px;
  padding: 16px 18px;
  border-left: 4px solid var(--accent);
  border-radius: 14px;
  background: rgba(224, 103, 47, 0.08);
  color: var(--ink);
}

.faq-list {
  display: grid;
  gap: 16px;
  margin-top: 16px;
}

.faq-item {
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.56);
  border: 1px solid rgba(255, 255, 255, 0.56);
}

.faq-item h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.policy-shell {
  display: grid;
  gap: 18px;
}

.meta-note {
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--teal);
  font-weight: 600;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 500ms ease,
    transform 500ms ease;
}

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

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

  .reveal,
  .reveal.is-visible,
  .button,
  .nav-links a::after {
    transition: none;
    transform: none;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1522;
    --bg-strong: #172233;
    --surface: rgba(17, 26, 40, 0.76);
    --surface-strong: rgba(19, 29, 44, 0.92);
    --ink: #eef4ff;
    --ink-soft: #9cadc4;
    --line: rgba(188, 205, 230, 0.16);
    --line-strong: rgba(188, 205, 230, 0.28);
    --accent: #f08349;
    --accent-strong: #d05d2c;
    --teal: #69c6be;
    --teal-soft: rgba(105, 198, 190, 0.16);
    --shadow-lg: 0 28px 80px rgba(0, 0, 0, 0.44);
    --shadow-md: 0 18px 42px rgba(0, 0, 0, 0.32);
  }

  body {
    background:
      radial-gradient(circle at top left, rgba(240, 131, 73, 0.16), transparent 24rem),
      radial-gradient(circle at top right, rgba(105, 198, 190, 0.14), transparent 24rem),
      linear-gradient(180deg, #111a2a 0%, var(--bg) 54%, #09111b 100%);
  }

  .topbar {
    background: rgba(229, 234, 242, 0.82);
    border-color: rgba(255, 255, 255, 0.24);
  }

  .brand,
  .nav-links {
    color: #142033;
  }

  .stat,
  .closing {
    color: #142033;
  }

  .stack-item,
  .stack-item strong,
  .stack-item a,
  .stack-item p,
  .stack-item p a {
    color: rgba(20, 32, 51, 0.82);
  }

  .faq-item,
  .faq-item h3,
  .faq-item p,
  .faq-item strong {
    color: rgba(20, 32, 51, 0.82);
  }

  .stat span,
  .closing p,
  .closing .eyebrow,
  .summary-band p {
    color: rgba(20, 32, 51, 0.82);
  }

  .nav-links a::after {
    background: var(--accent-strong);
  }

  .topbar,
  .summary-band,
  .closing,
  .stat,
  .stack-item,
  .faq-item {
    border-color: rgba(188, 205, 230, 0.12);
  }

  .button-secondary,
  .button-tertiary,
  kbd {
    background: rgba(255, 255, 255, 0.05);
  }

  kbd {
    box-shadow: inset 0 -2px 0 rgba(255, 255, 255, 0.04);
  }
}

@media (max-width: 1040px) {
  .hero-grid,
  .spotlight,
  .info-grid {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .settings-grid,
  .workflow-grid,
  .shortcut-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .spotlight-copy {
    padding-right: 0;
  }

  .screen-stack {
    min-height: 620px;
  }

  .closing {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 760px) {
  .hero,
  .section,
  .summary-band,
  .site-footer,
  .info-shell {
    width: min(calc(100% - 20px), var(--content-width));
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
    border-radius: 28px;
  }

  .nav-links {
    gap: 16px;
  }

  .hero-grid {
    padding-top: 34px;
  }

  .hero-copy h1 {
    font-size: clamp(2.9rem, 12vw, 4.2rem);
  }

  .hero-points,
  .feature-grid,
  .settings-grid,
  .workflow-grid,
  .shortcut-grid,
  .stat-row,
  .spotlight-gallery {
    grid-template-columns: 1fr;
  }

  .screen-stack {
    min-height: auto;
    display: grid;
    gap: 14px;
  }

  .screen-main,
  .screen-side,
  .screen-detail {
    position: static;
    width: 100%;
    transform: none;
  }

  .gallery-panel {
    min-height: 0;
  }

  .feature-card,
  .workflow-step,
  .setting-card,
  .shortcut-card,
  .info-card,
  .policy-card,
  .summary-band,
  .closing {
    padding: 20px;
    border-radius: 22px;
  }

  .info-header {
    padding: 12px 4px 0;
  }
}