:root {
  color-scheme: light dark;
  --page: #f7f8fc;
  --page-glow: rgba(97, 211, 229, 0.16);
  --surface: #ffffff;
  --surface-soft: #eff2f9;
  --text: #16233b;
  --subtle: #5b6578;
  --muted: #69728a;
  --border: #e1e6f0;
  --accent: #587fb8;
  --accent-strong: #416da9;
  --accent-soft: #e9f1fb;
  --success: #31956a;
  --aurora: linear-gradient(115deg, #61d3e5 0%, #9ab7e9 42%, #e5a9ff 100%);
  --shadow: 0 18px 60px rgba(22, 35, 59, 0.08);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #0f1420;
    --page-glow: rgba(97, 211, 229, 0.08);
    --surface: #182234;
    --surface-soft: #1d2739;
    --text: #e9edf6;
    --subtle: #a8b2c7;
    --muted: #8794ae;
    --border: #27324a;
    --accent: #81a4d2;
    --accent-strong: #a7c4e7;
    --accent-soft: #203047;
    --success: #4fbf8e;
    --shadow: 0 22px 70px rgba(0, 0, 0, 0.22);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 88% 8%, var(--page-glow), transparent 28rem),
    var(--page);
  color: var(--text);
  font-family: Inter, ui-rounded, "SF Pro Rounded", "SF Pro Display", -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration-thickness: 2px;
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 58%, transparent);
  outline-offset: 4px;
  border-radius: 8px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  padding: 10px 14px;
  transform: translateY(-160%);
  border-radius: 12px;
  background: var(--text);
  color: var(--page);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 82%, transparent);
  background: color-mix(in srgb, var(--page) 86%, transparent);
  backdrop-filter: blur(18px);
}

.nav,
.container {
  width: min(1120px, calc(100% - 40px));
  margin-inline: auto;
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-size: 20px;
  font-weight: 850;
  letter-spacing: -0.04em;
  text-decoration: none;
}

.brand-mini {
  display: grid;
  grid-template-columns: repeat(3, 7px);
  gap: 2px;
}

.brand-mini span {
  width: 7px;
  height: 7px;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--surface);
}

.brand-mini span:nth-child(5) {
  border-color: transparent;
  background: var(--aurora);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  padding: 8px 11px;
  border-radius: 11px;
  color: var(--subtle);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  background: var(--surface-soft);
  color: var(--text);
}

.hero {
  min-height: min(760px, calc(100vh - 72px));
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.75fr);
  align-items: center;
  gap: clamp(48px, 8vw, 110px);
  padding-block: 72px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent-strong);
  font-size: 13px;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(3.1rem, 8vw, 6.4rem);
  line-height: 0.98;
  letter-spacing: -0.07em;
}

.hero-copy {
  max-width: 650px;
  margin-bottom: 32px;
  color: var(--subtle);
  font-size: clamp(1.06rem, 2vw, 1.3rem);
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border: 1px solid var(--border);
  border-radius: 15px;
  background: var(--surface);
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  border-color: transparent;
  background: linear-gradient(115deg, #458ea0, #7b659a);
  color: #ffffff;
}

.hero-mark-shell {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 420px;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-mark-shell::before,
.hero-mark-shell::after {
  content: "";
  position: absolute;
  width: 220px;
  height: 220px;
  border-radius: 999px;
  filter: blur(55px);
  opacity: 0.18;
}

.hero-mark-shell::before {
  top: -90px;
  right: -70px;
  background: #61d3e5;
}

.hero-mark-shell::after {
  bottom: -100px;
  left: -75px;
  background: #e5a9ff;
}

.stilloku-mark {
  --tile: 72px;
  --gap: 12px;
  --step: 84px;
  position: relative;
  z-index: 1;
  width: calc(var(--tile) * 3 + var(--gap) * 2);
  height: calc(var(--tile) * 3 + var(--gap) * 2);
}

.mark-tile,
.mark-cursor {
  position: absolute;
  width: var(--tile);
  height: var(--tile);
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--surface);
  color: var(--text);
  font-size: 31px;
  font-weight: 850;
  line-height: 1;
  box-shadow: 0 8px 24px rgba(22, 35, 59, 0.05);
}

.mark-tile:nth-child(1) { transform: translate(0, 0); }
.mark-tile:nth-child(2) { transform: translate(var(--step), 0); }
.mark-tile:nth-child(3) { transform: translate(calc(var(--step) * 2), 0); }
.mark-tile:nth-child(4) { transform: translate(0, var(--step)); }
.mark-tile:nth-child(5) { transform: translate(var(--step), var(--step)); }
.mark-tile:nth-child(6) { transform: translate(calc(var(--step) * 2), var(--step)); }
.mark-tile:nth-child(7) { transform: translate(0, calc(var(--step) * 2)); }
.mark-tile:nth-child(8) { transform: translate(var(--step), calc(var(--step) * 2)); }
.mark-tile:nth-child(9) { transform: translate(calc(var(--step) * 2), calc(var(--step) * 2)); }

.mark-cursor {
  z-index: 2;
  border-color: transparent;
  background: var(--aurora);
  color: #ffffff;
  animation: calm-tour 12s cubic-bezier(0.45, 0, 0.55, 1) infinite;
}

@keyframes calm-tour {
  0%, 3% { transform: translate(var(--step), var(--step)); }
  6.25%, 9.25% { transform: translate(0, 0); }
  12.5%, 15.5% { transform: translate(var(--step), var(--step)); }
  18.75%, 21.75% { transform: translate(var(--step), 0); }
  25%, 28% { transform: translate(var(--step), var(--step)); }
  31.25%, 34.25% { transform: translate(calc(var(--step) * 2), 0); }
  37.5%, 40.5% { transform: translate(var(--step), var(--step)); }
  43.75%, 46.75% { transform: translate(calc(var(--step) * 2), var(--step)); }
  50%, 53% { transform: translate(var(--step), var(--step)); }
  56.25%, 59.25% { transform: translate(calc(var(--step) * 2), calc(var(--step) * 2)); }
  62.5%, 65.5% { transform: translate(var(--step), var(--step)); }
  68.75%, 71.75% { transform: translate(var(--step), calc(var(--step) * 2)); }
  75%, 78% { transform: translate(var(--step), var(--step)); }
  81.25%, 84.25% { transform: translate(0, calc(var(--step) * 2)); }
  87.5%, 90.5% { transform: translate(var(--step), var(--step)); }
  93.75%, 96.75% { transform: translate(0, var(--step)); }
  100% { transform: translate(var(--step), var(--step)); }
}

.section {
  padding-block: 96px;
}

.section-heading {
  max-width: 670px;
  margin-bottom: 42px;
}

.section-heading h2,
.legal-hero h1 {
  margin-bottom: 14px;
  font-size: clamp(2.1rem, 5vw, 3.7rem);
  line-height: 1.08;
  letter-spacing: -0.055em;
}

.section-heading p,
.legal-hero p {
  color: var(--subtle);
  font-size: 18px;
}

.feature-grid,
.game-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

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

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: 0 10px 35px rgba(22, 35, 59, 0.035);
}

.feature-card {
  min-height: 220px;
  padding: 28px;
}

.feature-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  margin-bottom: 24px;
  border-radius: 13px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 900;
}

.feature-card h3,
.game-card h3 {
  margin-bottom: 8px;
  font-size: 20px;
  letter-spacing: -0.03em;
}

.feature-card p,
.game-card p {
  margin-bottom: 0;
  color: var(--subtle);
}

.game-card {
  min-height: 250px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 32px;
  overflow: hidden;
}

.game-label {
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.game-sample {
  align-self: flex-end;
  margin-top: 28px;
  color: var(--muted);
  font-size: 32px;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.quiet-note {
  margin-block: 24px 96px;
  padding: 26px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface-soft);
  color: var(--subtle);
  text-align: center;
  font-weight: 700;
}

.legal-hero {
  max-width: 780px;
  padding-block: 80px 42px;
}

.legal-hero h1 {
  max-width: none;
}

.legal-meta {
  display: inline-flex;
  padding: 7px 11px;
  border-radius: 10px;
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
}

.legal-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 760px);
  gap: 56px;
  align-items: start;
  padding-bottom: 100px;
}

.legal-index {
  position: sticky;
  top: 102px;
  padding: 18px;
}

.legal-index strong {
  display: block;
  margin-bottom: 10px;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.legal-index a {
  display: block;
  padding: 5px 0;
  color: var(--subtle);
  font-size: 14px;
  text-decoration: none;
}

.legal-content {
  padding: clamp(24px, 5vw, 50px);
}

.legal-content section + section {
  margin-top: 44px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.legal-content h2 {
  margin-bottom: 14px;
  font-size: 25px;
  line-height: 1.25;
  letter-spacing: -0.035em;
}

.legal-content h3 {
  margin: 24px 0 8px;
  font-size: 18px;
}

.legal-content p,
.legal-content li {
  color: var(--subtle);
}

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

.callout {
  margin: 24px 0;
  padding: 20px 22px;
  border-left: 4px solid var(--accent);
  border-radius: 4px var(--radius-md) var(--radius-md) 4px;
  background: var(--accent-soft);
  color: var(--text);
}

.steps {
  padding: 0;
  list-style: none;
  counter-reset: steps;
}

.steps li {
  position: relative;
  min-height: 50px;
  padding: 10px 0 22px 58px;
  counter-increment: steps;
}

.steps li::before {
  content: counter(steps);
  position: absolute;
  top: 4px;
  left: 0;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 900;
}

.site-footer {
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
  padding-block: 38px;
}

.footer-copy {
  max-width: 360px;
  color: var(--muted);
  font-size: 14px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a {
  color: var(--subtle);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-block: 64px;
  }

  .hero-mark-shell {
    min-height: 360px;
  }

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

  .legal-layout {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .legal-index {
    position: static;
  }
}

@media (max-width: 640px) {
  .nav,
  .container {
    width: min(100% - 28px, 1120px);
  }

  .nav {
    min-height: 64px;
  }

  .nav-links a:not(:last-child) {
    display: none;
  }

  .hero {
    gap: 42px;
    padding-block: 52px;
  }

  h1 {
    font-size: clamp(3.2rem, 18vw, 4.8rem);
  }

  .hero-mark-shell {
    min-height: 310px;
  }

  .stilloku-mark {
    --tile: 58px;
    --gap: 10px;
    --step: 68px;
  }

  .mark-tile,
  .mark-cursor {
    border-radius: 17px;
    font-size: 25px;
  }

  .section {
    padding-block: 70px;
  }

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

  .legal-hero {
    padding-block: 58px 30px;
  }

  .legal-content {
    border-radius: 18px;
  }

  .footer-inner {
    flex-direction: column;
  }
}

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

  .mark-cursor {
    animation: none;
    transform: translate(var(--step), var(--step));
  }
}