:root {
  color-scheme: light;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "PingFang TC", sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;

  --site-surface-page: #f4f6f3;
  --site-surface-panel: #ffffff;
  --site-surface-soft: #e9eee8;
  --site-surface-raised: #fbfcfa;
  --site-text-primary: #17201a;
  --site-text-secondary: #566456;
  --site-text-muted: #738074;
  --site-text-inverse: #f7fbf7;
  --site-border-subtle: rgba(50, 68, 52, 0.14);
  --site-border-strong: rgba(50, 68, 52, 0.28);
  --site-primary: #155c33;
  --site-primary-strong: #0f4428;
  --site-accent: #255fb7;
  --site-warning: #ad6228;
  --site-shadow-card: 0 18px 42px rgba(23, 32, 26, 0.08);

  --site-card-radius: 8px;
  --site-frame-radius: 12px;
  --site-pill-radius: 999px;

  --site-status-present: #2e7d32;
  --site-status-incident: #c62828;
  --site-status-pending: #616161;
  --site-status-surface: rgba(46, 125, 50, 0.12);
  --site-status-border: rgba(46, 125, 50, 0.35);

  --theme-preview-bg: var(--site-surface-page);
  --theme-preview-surface: var(--site-surface-panel);
  --theme-preview-surface-soft: var(--site-surface-soft);
  --theme-preview-text: var(--site-text-primary);
  --theme-preview-muted: var(--site-text-secondary);
  --theme-preview-border: var(--site-border-subtle);
  --theme-preview-primary: var(--site-primary);
  --theme-preview-present: var(--site-status-present);
  --theme-preview-incident: var(--site-status-incident);
  --theme-preview-pending: var(--site-status-pending);

  font-family: var(--font-sans);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --site-surface-page: #050606;
    --site-surface-panel: #1c1e1e;
    --site-surface-soft: #121414;
    --site-surface-raised: #262828;
    --site-text-primary: #e4e7e9;
    --site-text-secondary: #a8b0b8;
    --site-text-muted: #88929c;
    --site-text-inverse: #07100b;
    --site-border-subtle: rgba(180, 195, 210, 0.15);
    --site-border-strong: rgba(180, 195, 210, 0.3);
    --site-primary: #387ef0;
    --site-primary-strong: #5a94e6;
    --site-accent: #06c755;
    --site-warning: #ffa000;
    --site-shadow-card: 0 18px 42px rgba(0, 0, 0, 0.38);
  }
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--site-surface-page);
  color: var(--site-text-primary);
  line-height: 1.65;
  overflow-x: hidden;
}

a { color: inherit; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: color-mix(in srgb, var(--site-surface-page) 94%, transparent);
  border-bottom: 1px solid var(--site-border-subtle);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
}

.brand img {
  border-radius: 10px;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 14px;
  color: var(--site-text-secondary);
}

nav a,
.site-footer a,
.text-link {
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.72fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: end;
  min-height: 82vh;
  padding: clamp(44px, 7vw, 88px) clamp(18px, 6vw, 88px) clamp(26px, 5vw, 48px);
}

.hero-copy,
.hero-showcase {
  min-width: 0;
}

.eyebrow,
.micro-label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--site-warning);
}

.micro-label {
  display: inline-flex;
  width: fit-content;
  margin-bottom: 16px;
  padding: 4px 8px;
  color: var(--site-accent);
  background: color-mix(in srgb, var(--site-accent) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--site-accent) 28%, transparent);
  border-radius: var(--site-pill-radius);
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: 56px;
  line-height: 1.05;
  overflow-wrap: anywhere;
}

h1 span {
  display: block;
}

h2 {
  margin-bottom: 24px;
  font-size: 36px;
  line-height: 1.15;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.lead {
  max-width: 720px;
  color: var(--site-text-secondary);
  font-size: 20px;
  overflow-wrap: anywhere;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 100%;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 18px;
  border: 1px solid var(--site-primary);
  border-radius: var(--site-card-radius);
  text-decoration: none;
  font-weight: 750;
  white-space: nowrap;
}

.button.primary {
  background: var(--site-primary);
  color: var(--site-text-inverse);
}

.button.secondary {
  background: transparent;
  color: var(--site-primary-strong);
}

.hero-showcase {
  display: grid;
  justify-items: center;
  gap: 14px;
}

.phone-frame {
  width: min(100%, 330px);
  max-height: 66vh;
  padding: 10px;
  overflow: hidden;
  background: linear-gradient(180deg, #1b2020, #070909);
  border: 1px solid var(--site-border-strong);
  border-radius: 30px;
  box-shadow: 0 28px 64px rgba(23, 32, 26, 0.2);
}

.phone-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 22px;
}

dl, dd { margin: 0; }

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: min(100%, 420px);
  background: var(--site-surface-panel);
  border: 1px solid var(--site-border-subtle);
  border-radius: var(--site-card-radius);
  box-shadow: var(--site-shadow-card);
}

.hero-metrics div {
  min-width: 0;
  padding: 12px;
  border-inline-start: 1px solid var(--site-border-subtle);
}

.hero-metrics div:first-child {
  border-inline-start: 0;
}

.hero-next {
  position: absolute;
  right: clamp(18px, 6vw, 88px);
  bottom: 12px;
  color: var(--site-text-secondary);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

dt {
  color: var(--site-text-secondary);
}

dd {
  font-weight: 800;
  overflow-wrap: anywhere;
}

.section {
  padding: clamp(52px, 7vw, 88px) clamp(18px, 6vw, 88px);
}

.homepage-tabs {
  border-top: 1px solid var(--site-border-subtle);
}

.tab-list {
  position: sticky;
  top: 65px;
  z-index: 8;
  display: flex;
  gap: 8px;
  padding: 12px clamp(18px, 6vw, 88px);
  overflow-x: auto;
  background: color-mix(in srgb, var(--site-surface-page) 94%, transparent);
  border-bottom: 1px solid var(--site-border-subtle);
  backdrop-filter: blur(16px);
}

.tab-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 8px 14px;
  color: var(--site-text-secondary);
  border: 1px solid var(--site-border-subtle);
  border-radius: var(--site-card-radius);
  text-decoration: none;
  white-space: nowrap;
}

.tab-button[aria-selected="true"] {
  color: var(--site-text-inverse);
  background: var(--site-primary);
  border-color: var(--site-primary);
}

.tab-panel[hidden] {
  display: none;
}

.section-heading {
  max-width: 900px;
  margin-bottom: 28px;
}

.band {
  background: var(--site-surface-soft);
  border-block: 1px solid var(--site-border-subtle);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.feature-grid-pillars {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.quickstart-grid,
.manual-index,
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.quickstart-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.manual-index {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.trust-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 1080px;
}

article {
  min-height: 210px;
  padding: 22px;
  background: var(--site-surface-panel);
  border: 1px solid var(--site-border-subtle);
  border-radius: var(--site-card-radius);
}

article p,
.steps span,
.narrow {
  color: var(--site-text-secondary);
}

.feature-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pillar-visual {
  display: grid;
  gap: 8px;
  min-height: 112px;
  padding: 12px;
  color: var(--site-text-primary);
  background: var(--site-surface-soft);
  border: 1px solid var(--site-border-subtle);
  border-radius: var(--site-card-radius);
}

.pillar-visual span,
.pillar-visual strong {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 4px 8px;
  background: var(--site-surface-panel);
  border: 1px solid var(--site-border-subtle);
  border-radius: var(--site-card-radius);
  font-size: 13px;
  font-weight: 800;
}

.seat-map-visual {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.seat-map-visual span {
  min-height: 22px;
  padding: 0;
}

.seat-map-visual span:nth-child(3n + 1) {
  background: color-mix(in srgb, var(--site-primary) 18%, var(--site-surface-panel));
}

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

.report-visual strong {
  color: var(--site-primary-strong);
  font-family: var(--font-mono);
  font-size: 20px;
}

.inbox-visual,
.trust-visual {
  align-content: center;
}

.theme-section {
  background:
    linear-gradient(180deg, var(--site-surface-page), var(--site-surface-soft));
  border-top: 1px solid var(--site-border-subtle);
}

.trust-section {
  background: var(--site-surface-page);
  border-top: 1px solid var(--site-border-subtle);
}

.screenshot-section {
  background: var(--site-surface-raised);
  border-top: 1px solid var(--site-border-subtle);
}

.flow-stack {
  display: grid;
  gap: 18px;
  max-width: 1440px;
}

.feature-flow {
  display: grid;
  grid-template-columns: minmax(220px, 0.42fr) minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  min-height: 0;
  padding: 20px;
}

.feature-flow-compact .flow-track {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  justify-content: start;
}

.flow-copy {
  position: sticky;
  top: 142px;
  min-width: 0;
}

.flow-copy p {
  color: var(--site-text-secondary);
}

.flow-track {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  min-width: 0;
}

.flow-step {
  position: relative;
}

.flow-step::after {
  position: absolute;
  top: 142px;
  right: -20px;
  z-index: 1;
  width: 28px;
  height: 2px;
  background: var(--site-border-strong);
  content: "";
}

.flow-step:last-child::after {
  content: none;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  min-height: 26px;
  margin-bottom: 10px;
  color: var(--site-text-inverse);
  background: var(--site-primary);
  border-radius: var(--site-card-radius);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
}

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  max-width: 1360px;
}

figure {
  margin: 0;
  padding: 14px;
  background: var(--site-surface-panel);
  border: 1px solid var(--site-border-subtle);
  border-radius: var(--site-card-radius);
}

figure img {
  display: block;
  width: min(100%, 260px);
  height: auto;
  margin: 0 auto;
  border: 1px solid var(--site-border-subtle);
  border-radius: 24px;
  box-shadow: var(--site-shadow-card);
}

figcaption {
  margin-top: 14px;
  color: var(--site-text-secondary);
  font-size: 15px;
}

.theme-grid,
.theme-switcher {
  display: grid;
  grid-template-columns: repeat(5, minmax(180px, 1fr));
  gap: 14px;
}

.theme-switcher {
  grid-template-columns: minmax(220px, 0.7fr) minmax(280px, 1fr);
  align-items: stretch;
}

.theme-options {
  display: grid;
  gap: 10px;
}

.theme-option {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 10px 12px;
  color: var(--site-text-primary);
  background: var(--site-surface-panel);
  border: 1px solid var(--site-border-subtle);
  border-radius: var(--site-card-radius);
  font: inherit;
  text-align: left;
}

.theme-option[aria-pressed="true"] {
  border-color: var(--site-primary);
  box-shadow: inset 0 0 0 1px var(--site-primary);
}

.theme-option small {
  min-width: 36px;
  color: var(--site-primary-strong);
  font-size: 12px;
  font-weight: 800;
  text-align: right;
}

.theme-swatch {
  width: 18px;
  height: 18px;
  background: var(--theme-preview-primary);
  border: 1px solid var(--site-border-strong);
  border-radius: var(--site-pill-radius);
}

.theme-option[data-theme-option="dark"] .theme-swatch {
  background: #387ef0;
}

.theme-option[data-theme-option="lowlight"] .theme-swatch {
  background: #8c1923;
}

.theme-option[data-theme-option="camo"] .theme-swatch {
  background: #8a9279;
}

.theme-option[data-theme-option="nv"] .theme-swatch {
  background: #00ff41;
}

.theme-card {
  min-height: 0;
  color: var(--theme-preview-text);
  background: var(--theme-preview-bg);
  border-color: var(--theme-preview-border);
  box-shadow: none;
}

.theme-card h3 {
  color: var(--theme-preview-text);
}

.theme-card .micro-label {
  color: var(--theme-preview-primary);
  background: color-mix(in srgb, var(--theme-preview-primary) 14%, transparent);
  border-color: color-mix(in srgb, var(--theme-preview-primary) 42%, transparent);
}

[data-theme-preview="light"] {
  --theme-preview-bg: #f2f4f2;
  --theme-preview-surface: #ffffff;
  --theme-preview-surface-soft: #e8ece8;
  --theme-preview-text: #1c201c;
  --theme-preview-muted: #5a695a;
  --theme-preview-border: rgba(60, 80, 60, 0.2);
  --theme-preview-primary: #006e2b;
  --theme-preview-present: #2e7d32;
  --theme-preview-incident: #c62828;
  --theme-preview-pending: #616161;
}

[data-theme-preview="dark"] {
  --theme-preview-bg: #000000;
  --theme-preview-surface: #1c1e1e;
  --theme-preview-surface-soft: #303232;
  --theme-preview-text: #e4e7e9;
  --theme-preview-muted: #9ba3ac;
  --theme-preview-border: rgba(180, 195, 210, 0.3);
  --theme-preview-primary: #387ef0;
  --theme-preview-present: #4caf50;
  --theme-preview-incident: #e53935;
  --theme-preview-pending: #9e9e9e;
}

[data-theme-preview="lowlight"] {
  --theme-preview-bg: #020101;
  --theme-preview-surface: #080304;
  --theme-preview-surface-soft: #1a0a0d;
  --theme-preview-text: #af1e2d;
  --theme-preview-muted: #641620;
  --theme-preview-border: rgba(80, 18, 25, 0.5);
  --theme-preview-primary: #8c1923;
  --theme-preview-present: #c82430;
  --theme-preview-incident: #5a080e;
  --theme-preview-pending: #3c0c12;
}

[data-theme-preview="camo"] {
  --theme-preview-bg: #242a1f;
  --theme-preview-surface: #2e3526;
  --theme-preview-surface-soft: #48523a;
  --theme-preview-text: #eaebe1;
  --theme-preview-muted: #bcbfae;
  --theme-preview-border: rgba(103, 110, 88, 0.5);
  --theme-preview-primary: #8a9279;
  --theme-preview-present: #7e945e;
  --theme-preview-incident: #a65c4c;
  --theme-preview-pending: #757e69;
}

[data-theme-preview="nv"] {
  --theme-preview-bg: #000000;
  --theme-preview-surface: #0a0f0a;
  --theme-preview-surface-soft: #0f1a0f;
  --theme-preview-text: #00ff41;
  --theme-preview-muted: #00cc33;
  --theme-preview-border: rgba(0, 77, 24, 0.5);
  --theme-preview-primary: #00ff41;
  --theme-preview-present: #00ff41;
  --theme-preview-incident: #ff3300;
  --theme-preview-pending: #009922;
}

.screenshot-frame {
  margin-top: 18px;
  padding: 14px;
  background: var(--theme-preview-surface);
  border: 1px solid var(--theme-preview-border);
  border-radius: var(--site-frame-radius);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--theme-preview-primary) 12%, transparent);
}

.frame-bar {
  width: 42%;
  height: 5px;
  margin-bottom: 16px;
  background: var(--theme-preview-primary);
  border-radius: var(--site-pill-radius);
}

.mock-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  color: var(--theme-preview-text);
  background: var(--theme-preview-surface-soft);
  border: 1px solid var(--theme-preview-border);
  border-radius: var(--site-card-radius);
}

.mock-row span,
.mock-row b {
  font-family: var(--font-mono);
  font-size: 13px;
}

.mock-row span {
  color: var(--theme-preview-primary);
  font-weight: 800;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 3px 8px;
  font-size: 12px;
  font-weight: 800;
  border: 1px solid;
  border-radius: var(--site-pill-radius);
}

.status-pill.present {
  color: var(--theme-preview-present);
  background: color-mix(in srgb, var(--theme-preview-present) 14%, transparent);
  border-color: color-mix(in srgb, var(--theme-preview-present) 45%, transparent);
}

.status-pill.incident {
  color: var(--theme-preview-incident);
  background: color-mix(in srgb, var(--theme-preview-incident) 14%, transparent);
  border-color: color-mix(in srgb, var(--theme-preview-incident) 45%, transparent);
}

.status-pill.pending {
  color: var(--theme-preview-pending);
  background: color-mix(in srgb, var(--theme-preview-pending) 14%, transparent);
  border-color: color-mix(in srgb, var(--theme-preview-pending) 45%, transparent);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.steps-five {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.steps li {
  padding-top: 18px;
  border-top: 3px solid var(--site-primary);
}

.steps strong,
.steps span {
  display: block;
}

.narrow {
  max-width: 760px;
  font-size: 18px;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  padding: 24px clamp(18px, 4vw, 56px);
  color: var(--site-text-secondary);
  border-top: 1px solid var(--site-border-subtle);
}

.manual-section {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  background: var(--site-surface-soft);
  border-top: 1px solid var(--site-border-subtle);
}

.manual-copy {
  max-width: 760px;
}

.manual-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.manual-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.manual-card .text-link {
  width: fit-content;
  margin-top: auto;
  color: var(--site-primary-strong);
  font-weight: 800;
}

.usecase-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.62fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  padding: clamp(44px, 7vw, 88px) clamp(18px, 6vw, 88px);
  border-bottom: 1px solid var(--site-border-subtle);
}

.usecase-hero-copy {
  min-width: 0;
}

.usecase-hero-panel {
  display: grid;
  justify-items: center;
  gap: 14px;
  min-width: 0;
}

.usecase-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: min(100%, 460px);
  background: var(--site-surface-panel);
  border: 1px solid var(--site-border-subtle);
  border-radius: var(--site-card-radius);
  box-shadow: var(--site-shadow-card);
}

.usecase-metrics div {
  min-width: 0;
  padding: 12px;
  border-inline-start: 1px solid var(--site-border-subtle);
}

.usecase-metrics div:first-child {
  border-inline-start: 0;
}

.usecase-card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.usecase-proof-band {
  background: var(--site-surface-raised);
  border-block: 1px solid var(--site-border-subtle);
}

.usecase-split {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(280px, 0.48fr);
  gap: 24px;
  align-items: start;
}

.usecase-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 20px;
  color: var(--site-text-secondary);
  font-weight: 700;
}

.usecase-note {
  min-height: 0;
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--site-primary) 10%, transparent), transparent 62%),
    var(--site-surface-panel);
}

.guide-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(280px, 0.58fr);
  gap: clamp(24px, 5vw, 64px);
  align-items: end;
  padding: clamp(44px, 7vw, 84px) clamp(18px, 6vw, 88px);
  border-bottom: 1px solid var(--site-border-subtle);
}

.guide-hero-card {
  min-height: 0;
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--site-primary) 12%, transparent), transparent 58%),
    var(--site-surface-panel);
}

.guide-hero-card dl {
  display: grid;
  gap: 12px;
}

.guide-hero-card dl > div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--site-border-subtle);
}

.guide-hero-card dl > div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.guide-book-card {
  align-self: stretch;
  overflow: hidden;
}

.guide-book-stack {
  display: grid;
  gap: 10px;
  margin: 18px 0;
}

.guide-book-tab {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 2px;
  align-items: center;
  min-height: 74px;
  padding: 14px 16px;
  color: var(--site-text-primary);
  background: color-mix(in srgb, var(--site-surface-soft) 78%, #ffffff);
  border: 1px solid var(--site-border-subtle);
  border-left: 6px solid var(--site-primary);
  border-radius: 14px;
  text-decoration: none;
  box-shadow: 0 14px 26px rgba(15, 23, 42, 0.06);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.guide-book-tab:nth-child(2) {
  margin-left: 18px;
}

.guide-book-tab:nth-child(3) {
  margin-left: 36px;
}

.guide-book-tab:nth-child(4) {
  margin-left: 18px;
}

.guide-book-tab:hover,
.guide-book-tab:focus-visible {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--site-primary) 42%, var(--site-border-subtle));
  box-shadow: 0 20px 34px rgba(15, 23, 42, 0.10);
}

.guide-book-tab span {
  grid-row: span 2;
  color: var(--site-primary-strong);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0;
  white-space: nowrap;
}

.guide-book-tab strong {
  min-width: 0;
  overflow-wrap: anywhere;
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.18;
}

.guide-book-tab small {
  color: var(--site-text-secondary);
  font-size: 14px;
  font-weight: 760;
}

.guide-quick-facts {
  margin-top: 16px;
}

.guide-nav {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  padding: 14px clamp(18px, 6vw, 88px);
  background: var(--site-surface-soft);
  border-bottom: 1px solid var(--site-border-subtle);
}

.guide-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 8px 12px;
  color: var(--site-primary-strong);
  background: var(--site-surface-panel);
  border: 1px solid var(--site-border-subtle);
  border-radius: var(--site-card-radius);
  text-decoration: none;
  font-weight: 800;
  text-align: center;
}

.guide-section {
  display: grid;
  grid-template-columns: minmax(220px, 0.36fr) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  border-top: 1px solid var(--site-border-subtle);
}

.guide-section:first-of-type {
  border-top: 0;
}

.guide-section-heading {
  position: sticky;
  top: 92px;
}

.guide-panel-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

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

.guide-onboarding-card {
  position: relative;
  min-height: 0;
  padding: clamp(22px, 4vw, 38px);
  background: var(--site-surface-panel);
  border: 1px solid var(--site-border-subtle);
  border-radius: 20px;
  box-shadow: var(--site-shadow-card);
}

.guide-onboarding-card h3 {
  margin-bottom: 6px;
  font-size: clamp(28px, 4vw, 44px);
}

.guide-onboarding-card > p {
  margin-bottom: 22px;
  color: var(--site-text-secondary);
  font-size: 20px;
  font-weight: 760;
}

.guide-onboarding-card ol {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.guide-onboarding-card li {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 20px;
  background: var(--site-surface-soft);
  border: 1px solid var(--site-border-subtle);
  border-radius: 18px;
}

.guide-onboarding-card li > span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  min-height: 50px;
  color: #ffffff;
  background: #06c755;
  border-radius: var(--site-pill-radius);
  font-size: 26px;
  font-weight: 900;
}

.guide-onboarding-card li strong {
  display: block;
  margin-bottom: 4px;
  color: var(--site-text-primary);
  font-size: 22px;
}

.guide-onboarding-card li p {
  margin: 0;
  color: var(--site-text-secondary);
  font-size: 18px;
  font-weight: 700;
}

.guide-close-button {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 38px;
  min-height: 38px;
  color: var(--site-text-secondary);
  background: transparent;
  border: 0;
  font-size: 34px;
  line-height: 1;
}

.guide-primary-action {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 66px;
  margin-top: 22px;
  color: #ffffff;
  background: linear-gradient(135deg, #007a33, #06c755);
  border-radius: 18px;
  font-size: clamp(20px, 3vw, 30px);
  font-weight: 900;
  text-align: center;
}

.guide-panel strong {
  display: block;
  margin-bottom: 8px;
  color: var(--site-text-primary);
}

.guide-fact-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.guide-fact-list li {
  padding: 12px 14px;
  color: var(--site-text-secondary);
  background: var(--site-surface-panel);
  border: 1px solid var(--site-border-subtle);
  border-radius: var(--site-card-radius);
}

.policy-page main {
  max-width: 900px;
  margin: 0 auto;
  padding: 48px 18px 80px;
}

.policy-page h1 {
  font-size: 44px;
}

.policy-page p,
.policy-page li {
  overflow-wrap: anywhere;
}

.policy-page table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  overflow-wrap: anywhere;
}

.policy-page th,
.policy-page td {
  padding: 12px;
  border: 1px solid var(--site-border-subtle);
  vertical-align: top;
  text-align: left;
}

.policy-page th {
  background: var(--site-surface-soft);
}

@media (max-width: 1180px) {
  .theme-grid,
  .theme-switcher,
  .feature-grid-pillars,
  .usecase-card-grid,
  .quickstart-grid,
  .manual-index,
  .trust-grid,
  .feature-flow,
  .screenshot-grid,
  .steps-five,
  .guide-nav,
  .guide-panel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-flow,
  .guide-section,
  .guide-hero,
  .usecase-hero,
  .usecase-split {
    grid-template-columns: 1fr;
  }

  .flow-copy,
  .guide-section-heading {
    position: static;
  }

  .feature-flow-compact .flow-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 920px) {
  .hero,
  .theme-switcher,
  .feature-grid,
  .quickstart-grid,
  .manual-index,
  .usecase-card-grid,
  .trust-grid,
  .flow-track,
  .steps,
  .steps-five,
  .screenshot-grid,
  .guide-panel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-flow-compact .flow-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .flow-step::after {
    top: auto;
    right: auto;
    bottom: -17px;
    left: 30px;
    width: 2px;
    height: 18px;
  }

  .hero {
    min-height: auto;
    align-items: start;
    padding-bottom: 54px;
  }

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

  .tab-list {
    top: 113px;
  }

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

  .hero-next {
    right: auto;
    left: 30px;
    bottom: 18px;
  }
}

@media (max-width: 640px) {
  .flow-track,
  .feature-flow-compact .flow-track,
  .guide-nav,
  .guide-panel-grid {
    grid-template-columns: 1fr;
  }

  .guide-onboarding-card li {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 12px;
    padding: 16px;
  }

  .guide-onboarding-card li > span {
    width: 42px;
    min-height: 42px;
    font-size: 22px;
  }

  .guide-onboarding-card li strong {
    font-size: 19px;
  }

  .guide-onboarding-card li p {
    font-size: 16px;
  }

  .guide-book-tab,
  .guide-book-tab:nth-child(2),
  .guide-book-tab:nth-child(3),
  .guide-book-tab:nth-child(4) {
    margin-left: 0;
  }

  .guide-book-tab {
    grid-template-columns: 64px minmax(0, 1fr);
  }
}

@media (max-width: 620px) {
  .theme-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    grid-template-columns: minmax(104px, 118px) minmax(0, 1fr);
    gap: 18px 14px;
    padding-top: 36px;
  }

  .hero-copy {
    display: contents;
  }

  .hero-showcase {
    grid-column: 2;
    grid-row: 4;
    justify-items: start;
    max-width: none;
  }

  .eyebrow,
  h1,
  .lead {
    grid-column: 1 / -1;
  }

  h1 {
    max-width: 300px;
  }

  .lead {
    max-width: 280px;
  }

  .hero-actions {
    display: grid;
    grid-column: 1;
    grid-row: 4;
    grid-template-columns: 1fr;
    width: 112px;
    gap: 8px;
    margin-top: 8px;
  }

  .button {
    min-height: 40px;
    padding: 8px 6px;
    font-size: 14px;
  }

  .phone-frame {
    width: min(100%, 190px);
    max-height: none;
    padding: 8px;
    border-radius: 24px;
  }

  .phone-frame img {
    border-radius: 18px;
  }

  h1 {
    font-size: 34px;
    word-break: break-all;
  }

  h2,
  .policy-page h1 {
    font-size: 30px;
  }

  .lead {
    font-size: 17px;
    word-break: break-all;
  }

  .hero-metrics {
    display: none;
  }

  .usecase-card-grid,
  .usecase-metrics {
    grid-template-columns: 1fr;
  }

  .usecase-metrics div {
    border-inline-start: 0;
    border-top: 1px solid var(--site-border-subtle);
  }

  .usecase-metrics div:first-child {
    border-top: 0;
  }

  figure {
    padding: 14px;
  }

  figure img {
    width: min(100%, 240px);
  }
}


/* Site journey and responsive navigation */
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-width: 0;
}

.site-header {
  align-items: stretch;
  flex-direction: column;
  gap: 12px;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 6px 10px;
  color: var(--site-text-secondary);
  background: var(--site-surface-panel);
  border: 1px solid var(--site-border-subtle);
  border-radius: var(--site-card-radius);
  text-decoration: none;
  white-space: nowrap;
}

.header-download {
  min-height: 40px;
  padding-inline: 14px;
}

.breadcrumb {
  padding: 12px clamp(18px, 6vw, 88px);
  color: var(--site-text-secondary);
  background: var(--site-surface-page);
  border-bottom: 1px solid var(--site-border-subtle);
  font-size: 14px;
}

.breadcrumb-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.breadcrumb a {
  color: var(--site-primary-strong);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.next-step {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  background: var(--site-surface-soft);
  border-top: 1px solid var(--site-border-subtle);
}

.sitemap-footer {
  display: grid;
  grid-template-columns: minmax(220px, 1.3fr) repeat(4, minmax(140px, 1fr));
  gap: 22px;
  align-items: start;
}

.footer-brand,
.footer-group {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.footer-brand span,
.footer-group a {
  color: var(--site-text-secondary);
}

.footer-group strong,
.footer-brand strong {
  color: var(--site-text-primary);
}

.footer-group a {
  width: fit-content;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.guide-screens {
  display: grid;
  gap: 14px;
  margin-bottom: 18px;
}

.guide-screens-two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

.policy-page table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.policy-page tbody,
.policy-page thead,
.policy-page tr {
  width: 100%;
}

.hero-actions .button,
.manual-actions .button {
  text-align: center;
  white-space: normal;
}

@media (max-width: 1180px) {
  .sitemap-footer {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .guide-screens-three {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 920px) {
  .site-header {
    gap: 10px;
    padding: 12px 0 10px;
  }

  .header-top {
    width: 100%;
    padding: 0 16px;
  }

  .brand span {
    overflow-wrap: anywhere;
  }

  .site-nav {
    width: 100%;
    flex-wrap: nowrap;
    gap: 8px;
    padding: 0 16px 2px;
    overflow-x: auto;
    scrollbar-width: none;
  }

  .site-nav::-webkit-scrollbar {
    display: none;
  }

  .site-nav a {
    flex: 0 0 auto;
  }

  .tab-list {
    top: 104px;
  }

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

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

@media (max-width: 640px) {
  .header-download {
    flex: 0 0 auto;
    min-height: 38px;
    padding: 7px 10px;
    font-size: 14px;
  }

  .hero,
  .guide-hero,
  .usecase-hero {
    display: grid;
    grid-template-columns: 1fr;
    gap: 22px;
    padding: 34px 18px 42px;
  }

  .hero-copy {
    display: block;
  }

  .hero-showcase {
    grid-column: auto;
    grid-row: auto;
    justify-items: center;
    width: 100%;
  }

  .hero-actions,
  .manual-actions {
    display: grid;
    grid-template-columns: 1fr;
    width: 100%;
    gap: 10px;
  }

  .hero-actions .button,
  .manual-actions .button {
    width: 100%;
    min-height: 46px;
    padding: 10px 14px;
    font-size: 15px;
  }

  h1,
  .lead {
    max-width: none;
    word-break: normal;
    overflow-wrap: anywhere;
  }

  .phone-frame {
    width: min(100%, 260px);
  }

  .flow-track,
  .guide-screens,
  .guide-screens-two,
  .guide-screens-three {
    display: flex;
    gap: 14px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: 8px;
  }

  .flow-step,
  .guide-screens figure {
    flex: 0 0 min(86vw, 320px);
    scroll-snap-align: start;
  }

  .flow-step::after {
    content: none;
  }

  .steps,
  .steps-five,
  .feature-grid,
  .feature-grid-pillars,
  .quickstart-grid,
  .manual-index,
  .trust-grid,
  .usecase-card-grid {
    grid-template-columns: 1fr;
  }

  .sitemap-footer {
    grid-template-columns: 1fr;
  }

  .policy-page main {
    padding-top: 32px;
  }
}

.path-section {
  background: var(--site-surface-page);
  border-top: 1px solid var(--site-border-subtle);
}

.path-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

@media (max-width: 920px) {
  .path-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .path-grid {
    grid-template-columns: 1fr;
  }
}


/* Narrow viewport hardening */
h1, h2, h3, p, li, dd, dt, a, strong, span {
  overflow-wrap: anywhere;
}

html,
body {
  max-width: 100%;
}

.site-header,
.header-top,
.site-nav,
main,
.section,
.section-heading,
.guide-hero,
.usecase-hero,
.hero,
.next-step,
.sitemap-footer {
  min-width: 0;
  max-width: 100%;
}

@media (max-width: 640px) {
  .site-header {
    width: 100%;
    max-width: 100vw;
    padding-right: 0;
  }

  .header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 100vw;
    gap: 10px;
    padding: 0 16px;
  }

  .brand {
    min-width: 0;
  }

  .brand span {
    font-size: 17px;
    line-height: 1.2;
  }

  .header-download {
    flex: 0 0 auto;
    min-width: 82px;
    min-height: 38px;
    padding: 7px 9px;
    font-size: 14px;
    white-space: nowrap;
  }

  .site-nav {
    width: 100%;
    max-width: 100vw;
    box-sizing: border-box;
  }

  .section,
  .guide-hero,
  .usecase-hero,
  .hero,
  .policy-page main {
    overflow-x: hidden;
  }

  h1, h2, h3, .lead, .narrow, .section-heading p, .next-step p {
    max-width: 100%;
    word-break: break-all;
  }

  h2,
  .policy-page h1 {
    font-size: 28px;
  }

  .guide-hero-card dl > div {
    display: grid;
    grid-template-columns: 1fr;
    align-items: start;
  }

  .guide-hero-card dd {
    text-align: left;
  }

  .next-step {
    overflow: hidden;
  }
}