:root {
  color-scheme: light;
  --canvas: #f7f8fa;
  --surface: #ffffff;
  --ink: #111318;
  --ink-muted: #5f6672;
  --hairline: #dde1e7;
  --action: #1e63e9;
  --action-pressed: #174fb8;
  --success: #0b7a53;
  --focus: #0b0e12;
  --focus-surface: #171b22;
  --focus-line: #343b46;
  --on-focus: #f4f7fa;
  --on-focus-muted: #abb2be;
  --amber: #f2c14e;
  --teal: #4fc3a1;
  --violet: #a997ff;
  --coral: #ff7b86;
  --content: 1180px;
  --radius: 6px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Noto Sans", "Noto Sans SC", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 8px 12px;
  background: var(--surface);
  color: var(--ink);
  border-radius: var(--radius);
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: relative;
  z-index: 20;
  height: 72px;
  border-bottom: 1px solid var(--hairline);
  background: rgba(247, 248, 250, 0.96);
}

.site-header--overlay {
  position: absolute;
  inset: 0 0 auto;
  border-bottom-color: rgba(255, 255, 255, 0.18);
  background: rgba(11, 14, 18, 0.48);
  color: var(--on-focus);
}

.site-nav {
  width: min(calc(100% - 40px), var(--content));
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  font-size: 17px;
  font-weight: 720;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: var(--radius);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-links a {
  color: inherit;
  font-size: 14px;
  font-weight: 620;
  text-decoration: none;
  white-space: nowrap;
}

.nav-links a:hover {
  text-decoration: underline;
  text-underline-offset: 5px;
}

.hero {
  position: relative;
  min-height: 82dvh;
  max-height: 780px;
  display: grid;
  align-items: center;
  overflow: hidden;
  background-color: var(--focus);
  background-image: url("/assets/focus-board-hero.jpg");
  background-position: center;
  background-size: cover;
  color: var(--on-focus);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(5, 7, 10, 0.18);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
  padding: 116px 0 70px;
}

.hero-copy {
  max-width: 520px;
}

.hero-kicker {
  margin: 0 0 16px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 750;
}

.hero h1 {
  margin: 0;
  font-size: 72px;
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 470px;
  margin: 20px 0 0;
  color: var(--on-focus);
  font-size: 22px;
  line-height: 1.45;
}

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

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--action);
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.button:hover {
  background: var(--action-pressed);
}

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

.button--ghost {
  border-color: rgba(255, 255, 255, 0.5);
  background: rgba(11, 14, 18, 0.5);
  color: var(--on-focus);
}

.button--ghost:hover {
  border-color: var(--on-focus);
  background: rgba(11, 14, 18, 0.76);
}

.section {
  padding: 88px 0;
}

.section--surface {
  background: var(--surface);
}

.section--focus {
  background: var(--focus);
  color: var(--on-focus);
}

.section-inner {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
}

.section h2 {
  max-width: 720px;
  margin: 0;
  font-size: 42px;
  line-height: 1.15;
  letter-spacing: 0;
}

.section-intro {
  max-width: 680px;
  margin: 18px 0 0;
  color: var(--ink-muted);
  font-size: 18px;
}

.section--focus .section-intro {
  color: var(--on-focus-muted);
}

.routine-list {
  margin: 52px 0 0;
  padding: 0;
  border-top: 1px solid var(--hairline);
  list-style: none;
}

.routine-list li {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) minmax(240px, 420px);
  gap: 26px;
  align-items: baseline;
  padding: 28px 0;
  border-bottom: 1px solid var(--hairline);
}

.routine-number {
  color: var(--action);
  font-size: 14px;
  font-weight: 780;
}

.routine-list h3 {
  margin: 0;
  font-size: 23px;
  line-height: 1.25;
}

.routine-list p {
  margin: 0;
  color: var(--ink-muted);
}

.surface-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(340px, 1.22fr);
  gap: 80px;
  align-items: center;
}

.surface-copy h2 {
  max-width: 500px;
}

.surface-demo {
  width: 100%;
  max-width: 590px;
  justify-self: end;
  padding: 28px;
  border: 1px solid var(--focus-line);
  border-radius: var(--radius);
  background: var(--focus-surface);
}

.surface-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 22px;
  color: var(--on-focus-muted);
  font-size: 13px;
}

.surface-status {
  color: var(--teal);
  font-weight: 700;
}

.number-board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  aspect-ratio: 1;
}

.number-board span {
  display: grid;
  place-items: center;
  min-width: 0;
  border: 1px solid var(--focus-line);
  border-radius: var(--radius);
  background: var(--focus);
  color: var(--on-focus);
  font-size: 24px;
  font-weight: 680;
}

.number-board span:nth-child(3) {
  border-color: var(--amber);
}

.number-board span:nth-child(6) {
  border-color: var(--teal);
}

.number-board span:nth-child(8) {
  border-color: var(--coral);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 22px;
  border-top: 1px solid var(--focus-line);
}

.metric {
  min-width: 0;
  padding: 18px 12px 0;
  text-align: center;
}

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

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

.metric strong {
  color: var(--on-focus);
  font-size: 21px;
}

.metric span {
  margin-top: 2px;
  color: var(--on-focus-muted);
  font-size: 12px;
}

.exercise-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-top: 48px;
}

.exercise {
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--surface);
}

.exercise-signal {
  width: 32px;
  height: 5px;
  margin-bottom: 22px;
  background: var(--action);
}

.exercise:nth-child(2) .exercise-signal {
  background: var(--success);
}

.exercise:nth-child(3) .exercise-signal {
  background: #a15c00;
}

.exercise:nth-child(4) .exercise-signal {
  background: #8b68e8;
}

.exercise:nth-child(5) .exercise-signal {
  background: #c43d4b;
}

.exercise h3 {
  margin: 0;
  overflow-wrap: anywhere;
  font-size: 18px;
  line-height: 1.3;
}

.exercise p {
  margin: 10px 0 0;
  color: var(--ink-muted);
  font-size: 14px;
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 52px;
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}

.principle {
  min-width: 0;
  padding: 30px;
}

.principle + .principle {
  border-left: 1px solid var(--hairline);
}

.principle h3 {
  margin: 0;
  font-size: 19px;
}

.principle p {
  margin: 10px 0 0;
  color: var(--ink-muted);
}

.availability {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 40px;
  align-items: center;
}

.availability p {
  max-width: 680px;
  margin: 14px 0 0;
  color: var(--ink-muted);
}

.availability-state {
  padding: 10px 14px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--success);
  font-size: 14px;
  font-weight: 720;
  white-space: nowrap;
}

.page-hero {
  padding: 92px 0 66px;
  border-bottom: 1px solid var(--hairline);
  background: var(--surface);
}

.page-hero-inner,
.legal,
.support-grid {
  width: min(calc(100% - 40px), 900px);
  margin: 0 auto;
}

.page-hero h1 {
  margin: 0;
  font-size: 52px;
  line-height: 1.1;
  letter-spacing: 0;
}

.page-hero p {
  max-width: 680px;
  margin: 16px 0 0;
  color: var(--ink-muted);
  font-size: 18px;
}

.document-status {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--action);
  font-size: 14px;
  font-weight: 740;
}

.legal {
  padding: 64px 0 96px;
}

.legal h2 {
  margin: 54px 0 12px;
  font-size: 27px;
  line-height: 1.25;
}

.legal h2:first-child {
  margin-top: 0;
}

.legal h3 {
  margin: 30px 0 8px;
  font-size: 19px;
}

.legal p,
.legal li {
  color: #343942;
}

.legal ul {
  padding-left: 22px;
}

.legal li + li {
  margin-top: 8px;
}

.legal a {
  color: var(--action);
  text-underline-offset: 4px;
}

.notice {
  margin: 0 0 40px;
  padding: 20px 22px;
  border-left: 4px solid var(--amber);
  background: #fff8e8;
  color: #513c0d;
}

.data-table {
  width: 100%;
  margin: 24px 0;
  border-collapse: collapse;
  background: var(--surface);
}

.data-table th,
.data-table td {
  padding: 14px;
  border: 1px solid var(--hairline);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  width: 30%;
  color: var(--ink);
  font-size: 14px;
}

.support-grid {
  padding: 64px 0 96px;
}

.support-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--hairline);
  list-style: none;
}

.support-list li {
  padding: 28px 0;
  border-bottom: 1px solid var(--hairline);
}

.support-list h2 {
  margin: 0;
  font-size: 22px;
}

.support-list p {
  margin: 10px 0 0;
  color: var(--ink-muted);
}

.site-footer {
  padding: 42px 0;
  border-top: 1px solid var(--hairline);
  background: var(--surface);
}

.footer-inner {
  width: min(calc(100% - 40px), var(--content));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.footer-copy {
  color: var(--ink-muted);
  font-size: 13px;
}

.footer-links {
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links a {
  color: var(--ink-muted);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
}

.footer-links a:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 4px;
}

@media (max-width: 980px) {
  .hero h1 {
    font-size: 56px;
  }

  .hero-copy {
    max-width: 460px;
  }

  .surface-layout {
    grid-template-columns: 1fr 1.05fr;
    gap: 44px;
  }

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

  .exercise:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  .section {
    padding: 68px 0;
  }

  .section h2 {
    font-size: 34px;
  }

  .hero {
    min-height: 78dvh;
    max-height: none;
    background-position: 57% center;
  }

  .hero::before {
    background: rgba(5, 7, 10, 0.5);
  }

  .hero-inner {
    padding-top: 128px;
  }

  .hero h1 {
    font-size: 48px;
  }

  .hero-lede {
    max-width: 380px;
    font-size: 19px;
  }

  .routine-list li {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 12px 18px;
  }

  .routine-list p {
    grid-column: 2;
  }

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

  .surface-demo {
    justify-self: stretch;
    max-width: 540px;
  }

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

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

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

  .availability-state {
    justify-self: start;
  }

  .page-hero {
    padding: 70px 0 50px;
  }

  .page-hero h1 {
    font-size: 42px;
  }

  .data-table,
  .data-table tbody,
  .data-table tr,
  .data-table th,
  .data-table td {
    display: block;
    width: 100%;
  }

  .data-table tr + tr {
    border-top: 8px solid var(--canvas);
  }

  .data-table th {
    border-bottom: 0;
  }

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

@media (max-width: 560px) {
  .site-header {
    height: 64px;
  }

  .site-nav {
    width: min(calc(100% - 24px), var(--content));
    gap: 10px;
  }

  .brand span {
    display: none;
  }

  .brand img {
    width: 32px;
    height: 32px;
  }

  .nav-links {
    gap: 14px;
  }

  .nav-links a {
    font-size: 12px;
  }

  .nav-product {
    display: none;
  }

  .hero-inner,
  .section-inner,
  .footer-inner,
  .page-hero-inner,
  .legal,
  .support-grid {
    width: min(calc(100% - 32px), var(--content));
  }

  .hero {
    min-height: 76dvh;
  }

  .hero h1 {
    font-size: 42px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .section h2 {
    font-size: 31px;
  }

  .section-intro {
    font-size: 16px;
  }

  .routine-list li {
    grid-template-columns: 1fr;
  }

  .routine-list p,
  .routine-number {
    grid-column: 1;
  }

  .surface-demo {
    padding: 18px;
  }

  .number-board {
    gap: 8px;
  }

  .number-board span {
    font-size: 20px;
  }

  .metric {
    padding-inline: 6px;
  }

  .metric strong {
    font-size: 18px;
  }

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

  .exercise:last-child {
    grid-column: auto;
  }

  .page-hero h1 {
    font-size: 36px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}