:root {
  color-scheme: light;
  --page: #f7fafc;
  --paper: #ffffff;
  --ink: #182033;
  --muted: #5e6c80;
  --line: #d9e3ee;
  --teal: #0fb7c8;
  --teal-dark: #087987;
  --gold: #ffc84b;
  --coral: #ee6f5d;
  --green: #3b9f72;
  --violet: #6861cf;
  --navy: #15203a;
  --shadow: 0 18px 44px rgba(24, 32, 51, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(135deg, rgba(15, 183, 200, 0.13) 0 16%, transparent 16% 100%),
    linear-gradient(180deg, #f7fafc 0%, #ffffff 45%, #fff6e3 100%);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

button,
select {
  font: inherit;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 76px;
  padding: 0.55rem clamp(1rem, 3vw, 2.5rem);
  background: rgba(255, 255, 255, 0.93);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
}

.brand img {
  display: block;
  width: auto;
  height: 58px;
}

.site-nav,
.site-footer nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.site-nav a,
.site-footer a {
  border-radius: 8px;
  color: var(--ink);
  font-weight: 800;
  padding: 0.45rem 0.7rem;
  text-decoration: none;
}

.site-nav a:hover,
.site-footer a:hover {
  background: rgba(15, 183, 200, 0.12);
}

.play-area {
  display: grid;
  grid-template-columns: minmax(320px, 1.18fr) minmax(280px, 0.82fr);
  align-items: center;
  gap: clamp(1rem, 3vw, 2.25rem);
  width: min(1180px, calc(100% - 2rem));
  min-height: calc(100svh - 76px);
  margin: 0 auto;
  padding: 1.25rem 0 2rem;
}

.game-shell,
.intro-panel,
.rating-panel,
.feature-grid article,
.notice-box,
.policy-card {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.game-shell {
  overflow: hidden;
}

.game-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem;
}

.eyebrow {
  margin: 0 0 0.45rem;
  color: var(--teal-dark);
  font-size: 0.82rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  letter-spacing: 0;
}

h1 {
  margin: 0;
  font-size: 3.1rem;
  line-height: 1;
}

h2 {
  margin: 0 0 1rem;
  font-size: 2rem;
  line-height: 1.14;
}

h3 {
  margin: 0 0 0.6rem;
  font-size: 1.08rem;
  line-height: 1.2;
}

p {
  color: #33445b;
  margin: 0;
}

p + p {
  margin-top: 0.9rem;
}

.scorebar {
  display: grid;
  grid-template-columns: repeat(3, minmax(62px, 1fr));
  gap: 0.5rem;
}

.scorebar div {
  min-width: 0;
  padding: 0.55rem 0.62rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f3f7fb;
  text-align: center;
}

.scorebar span,
.select-wrap span {
  display: block;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 900;
  text-transform: uppercase;
}

.scorebar strong {
  display: block;
  margin-top: 0.08rem;
  font-size: 1.2rem;
  line-height: 1;
}

.canvas-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 48 / 31;
  margin: 0 1rem;
  border: 1px solid rgba(8, 121, 135, 0.32);
  border-radius: 8px;
  background: var(--navy);
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.screen-message {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  left: 1rem;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  min-height: 58px;
  padding: 0.78rem 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  background: rgba(21, 32, 58, 0.86);
  color: #ffffff;
}

.screen-message.is-visible {
  display: flex;
}

.screen-message span {
  color: #dceff6;
}

.toolbar {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) minmax(130px, 0.9fr);
  gap: 0.6rem;
  padding: 1rem;
}

button,
select {
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
}

button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.55rem 0.72rem;
  cursor: pointer;
  font-weight: 900;
}

button:hover:not(:disabled),
select:hover {
  border-color: rgba(15, 183, 200, 0.62);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.primary-button {
  background: linear-gradient(135deg, var(--gold), #fff17a 47%, var(--teal));
  border-color: rgba(8, 121, 135, 0.45);
}

.select-wrap {
  display: grid;
  gap: 0.25rem;
}

.select-wrap select {
  width: 100%;
  padding: 0 0.55rem;
  cursor: pointer;
}

.intro-panel {
  display: grid;
  gap: 0.8rem;
  padding: clamp(1rem, 3vw, 1.4rem);
}

.intro-logo {
  display: block;
  width: min(360px, 100%);
  height: auto;
}

.intro-panel p {
  font-size: 1.02rem;
}

.facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
}

.facts div {
  min-width: 0;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbfd;
}

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

.facts strong {
  font-size: 0.85rem;
}

.facts span {
  color: var(--muted);
  font-size: 0.93rem;
}

.content-band {
  padding: 4.3rem 0;
  background: rgba(255, 255, 255, 0.72);
}

.light-band {
  background:
    linear-gradient(90deg, rgba(15, 183, 200, 0.1), rgba(255, 200, 75, 0.16)),
    #ffffff;
}

.section-inner {
  width: min(1080px, calc(100% - 2rem));
  margin: 0 auto;
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.46fr);
  gap: clamp(1rem, 3vw, 2rem);
  align-items: start;
}

.rating-panel {
  display: grid;
  justify-items: center;
  padding: 1.4rem;
  text-align: center;
}

.rating-panel strong {
  color: var(--coral);
  font-size: 4rem;
  line-height: 1;
}

.rating-panel span {
  font-weight: 900;
}

.rating-panel p {
  max-width: 16rem;
  margin-top: 0.8rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.1rem;
}

.feature-grid article {
  padding: 1.1rem;
}

.feature-grid article:nth-child(1) {
  border-top: 4px solid var(--teal);
}

.feature-grid article:nth-child(2) {
  border-top: 4px solid var(--gold);
}

.feature-grid article:nth-child(3) {
  border-top: 4px solid var(--green);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.35rem clamp(1rem, 3vw, 2.5rem);
  border-top: 1px solid var(--line);
  background: #ffffff;
  color: var(--muted);
}

.site-footer div {
  display: grid;
  gap: 0.1rem;
}

.site-footer strong {
  color: var(--ink);
}

.policy-page {
  width: min(960px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 3rem 0 4rem;
}

.policy-hero {
  padding: 1rem 0 1.25rem;
}

.policy-hero h1 {
  margin-bottom: 1rem;
}

.policy-card {
  display: grid;
  gap: 0.75rem;
  padding: 1.25rem;
}

.policy-card h2 {
  margin: 1.15rem 0 0;
  font-size: 1.35rem;
}

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

.policy-list {
  margin: 0;
  padding-left: 1.1rem;
  color: #33445b;
}

.policy-list li + li {
  margin-top: 0.45rem;
}

.notice-box {
  padding: 1rem;
  border-left: 4px solid var(--coral);
}

.contact-list {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 0.55rem 1rem;
  margin: 0;
}

.contact-list dt {
  color: var(--muted);
  font-weight: 900;
}

.contact-list dd {
  margin: 0;
}

@media (max-width: 920px) {
  .play-area,
  .split-layout {
    grid-template-columns: 1fr;
  }

  .play-area {
    min-height: auto;
    padding-top: 1rem;
  }

  .intro-panel {
    order: -1;
  }
}

@media (max-width: 680px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .brand img {
    height: 50px;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .site-nav a,
  .site-footer a {
    padding: 0.42rem 0.5rem;
  }

  h1 {
    font-size: 2.45rem;
  }

  h2 {
    font-size: 1.55rem;
  }

  .game-head,
  .screen-message,
  .site-footer {
    align-items: stretch;
    flex-direction: column;
  }

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

  .scorebar div {
    padding-inline: 0.35rem;
  }

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

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