@layer reset, base, scenery, layout, game, motion, responsive;

@layer reset {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  html {
    min-width: 320px;
    scroll-behavior: smooth;
  }

  body,
  h1,
  p {
    margin: 0;
  }

  button {
    font: inherit;
  }
}

@layer base {
  :root {
    --sky: oklch(82% 0.1 225);
    --sky-deep: oklch(70% 0.14 230);
    --cream: oklch(97% 0.035 88);
    --paper: oklch(99% 0.018 86);
    --ink: oklch(35% 0.045 342);
    --berry: oklch(68% 0.2 17);
    --berry-dark: oklch(53% 0.17 13);
    --leaf: oklch(68% 0.14 143);
    --star: oklch(87% 0.18 91);
    --star-dark: oklch(72% 0.17 72);
    --orange: oklch(75% 0.16 49);
    --board-blue: oklch(68% 0.14 237);
    --focus: oklch(47% 0.15 245);
    --radius-wobbly: 30px 23px 34px 25px;
    color: var(--ink);
    font-family: "Hiragino Maru Gothic ProN", "Yuanti SC", "Microsoft YaHei", sans-serif;
    font-synthesis: none;
  }

  body {
    min-height: 100svh;
    overflow-x: hidden;
    background:
      linear-gradient(180deg, var(--sky) 0 52%, var(--cream) 52% 100%);
  }

  body::after {
    position: fixed;
    z-index: -1;
    right: -6vw;
    bottom: -9vw;
    left: -6vw;
    height: 43vh;
    border-radius: 50% 52% 0 0 / 18% 22% 0 0;
    background:
      radial-gradient(circle at 9% 29%, color-mix(in oklch, var(--leaf) 64%, var(--cream)) 0 4px, transparent 5px),
      radial-gradient(circle at 88% 17%, color-mix(in oklch, var(--star) 72%, var(--cream)) 0 5px, transparent 6px),
      var(--cream);
    content: "";
  }

  button {
    color: inherit;
    -webkit-tap-highlight-color: transparent;
  }

  button:focus-visible,
  a:focus-visible {
    outline: 4px solid var(--focus);
    outline-offset: 4px;
  }

  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .skip-link {
    position: fixed;
    z-index: 100;
    top: 12px;
    left: 12px;
    padding: 10px 16px;
    border-radius: 999px;
    background: var(--ink);
    color: var(--paper);
    font-weight: 800;
    text-decoration: none;
    transform: translateY(-160%);
    transition: transform 180ms ease-out;
  }

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

  .piece-sprite {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
  }

  .piece {
    display: block;
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 4px 0 color-mix(in oklch, var(--ink) 15%, transparent));
    overflow: visible;
  }
}

@layer scenery {
  .sky-decor {
    position: fixed;
    z-index: -1;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
  }

  .cloud {
    position: absolute;
    width: 124px;
    height: 38px;
    border-radius: 999px;
    background: color-mix(in oklch, var(--paper) 84%, transparent);
    opacity: 0.75;
  }

  .cloud::before,
  .cloud::after {
    position: absolute;
    bottom: 6px;
    border-radius: 50%;
    background: inherit;
    content: "";
  }

  .cloud::before {
    left: 18px;
    width: 48px;
    height: 48px;
  }

  .cloud::after {
    right: 18px;
    width: 66px;
    height: 66px;
  }

  .cloud--one {
    top: 12%;
    left: 4%;
  }

  .cloud--two {
    top: 7%;
    right: 15%;
    scale: 0.72;
    opacity: 0.52;
  }

  .sun {
    position: absolute;
    top: 8%;
    right: 5%;
    width: 90px;
    height: 90px;
    border: 5px solid color-mix(in oklch, var(--ink) 72%, transparent);
    border-radius: 50%;
    background: var(--star);
    box-shadow:
      0 -15px 0 -10px var(--ink),
      0 15px 0 -10px var(--ink),
      15px 0 0 -10px var(--ink),
      -15px 0 0 -10px var(--ink);
    rotate: 6deg;
  }

  .sun::before,
  .sun::after {
    position: absolute;
    top: 36px;
    width: 7px;
    height: 8px;
    border-radius: 50%;
    background: var(--ink);
    content: "";
  }

  .sun::before {
    left: 25px;
  }

  .sun::after {
    right: 25px;
  }

  .sun i {
    position: absolute;
    top: 53px;
    left: 32px;
    width: 20px;
    height: 10px;
    border-bottom: 4px solid var(--ink);
    border-radius: 50%;
  }

  .kite {
    position: absolute;
    top: 24%;
    left: 8%;
    width: 48px;
    height: 48px;
    border: 4px solid var(--ink);
    background: linear-gradient(135deg, var(--berry) 0 49%, var(--star) 50% 100%);
    rotate: 45deg;
  }

  .kite::after {
    position: absolute;
    top: 41px;
    left: 39px;
    width: 70px;
    height: 70px;
    border-left: 3px dashed color-mix(in oklch, var(--ink) 65%, transparent);
    border-radius: 50%;
    content: "";
  }

  .music-toggle {
    position: fixed;
    z-index: 20;
    top: max(18px, env(safe-area-inset-top));
    right: max(18px, env(safe-area-inset-right));
    display: flex;
    min-height: 48px;
    align-items: center;
    gap: 7px;
    padding: 8px 15px 8px 10px;
    border: 3px solid var(--ink);
    border-radius: 999px;
    background: var(--paper);
    box-shadow: 0 4px 0 color-mix(in oklch, var(--ink) 18%, transparent);
    cursor: pointer;
    font-size: 0.83rem;
    font-weight: 900;
    transition: transform 180ms ease-out, box-shadow 180ms ease-out;
  }

  .music-toggle__notes {
    display: grid;
    width: 28px;
    height: 28px;
    place-items: center;
    border-radius: 50%;
    background: var(--star);
    font-size: 1.1rem;
  }

  .music-toggle[data-enabled="false"] .music-toggle__notes {
    background: color-mix(in oklch, var(--ink) 12%, var(--paper));
    text-decoration: line-through;
  }

  @media (hover: hover) {
    .music-toggle:hover {
      box-shadow: 0 2px 0 color-mix(in oklch, var(--ink) 20%, transparent);
      transform: translateY(2px) rotate(-1deg);
    }
  }
}

@layer layout {
  .page-shell {
    position: relative;
    z-index: 1;
    display: grid;
    width: min(1120px, calc(100% - 40px));
    min-height: 100svh;
    margin-inline: auto;
    grid-template-columns: minmax(310px, 0.84fr) minmax(450px, 1.16fr);
    align-items: center;
    gap: clamp(36px, 6vw, 88px);
    padding-block: clamp(74px, 9vh, 110px) max(42px, env(safe-area-inset-bottom));
  }

  .story-panel {
    position: relative;
    padding-bottom: 34px;
  }

  .eyebrow {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    color: color-mix(in oklch, var(--ink) 82%, var(--sky-deep));
    font-size: clamp(0.82rem, 1.3vw, 0.98rem);
    font-weight: 900;
    letter-spacing: 0.15em;
  }

  .eyebrow span {
    color: var(--berry-dark);
    font-size: 1.15em;
  }

  h1 {
    max-width: 6em;
    color: var(--ink);
    font-size: clamp(3.7rem, 7.7vw, 6.7rem);
    font-weight: 950;
    letter-spacing: -0.09em;
    line-height: 0.88;
    text-wrap: balance;
    text-shadow: 0 5px 0 color-mix(in oklch, var(--paper) 65%, transparent);
  }

  h1 span {
    display: block;
    width: fit-content;
    color: var(--berry-dark);
    rotate: -3deg;
  }

  .intro-copy {
    max-width: 34rem;
    margin-top: 25px;
    color: color-mix(in oklch, var(--ink) 88%, var(--sky-deep));
    font-size: clamp(1rem, 1.6vw, 1.18rem);
    font-weight: 700;
    line-height: 1.8;
  }

  .hero-friends {
    display: grid;
    max-width: 390px;
    margin-top: 26px;
    grid-template-columns: 1fr auto 1fr;
    align-items: end;
    gap: 5px;
  }

  .friend {
    position: relative;
    display: grid;
    min-height: 155px;
    place-items: end center;
  }

  .friend--berry {
    rotate: -4deg;
  }

  .friend--star {
    rotate: 4deg;
  }

  .piece--hero {
    width: clamp(104px, 13vw, 142px);
    height: clamp(104px, 13vw, 142px);
  }

  .speech {
    position: absolute;
    z-index: 1;
    top: -4px;
    width: max-content;
    max-width: 132px;
    padding: 7px 10px;
    border: 2px solid color-mix(in oklch, var(--ink) 82%, transparent);
    border-radius: 14px 14px 14px 4px;
    background: var(--paper);
    font-size: 0.72rem;
    font-weight: 800;
    text-align: center;
  }

  .friend--berry .speech {
    left: -3px;
  }

  .friend--star .speech {
    right: -5px;
    border-radius: 14px 14px 4px;
  }

  .versus {
    padding-bottom: 38px;
    color: color-mix(in oklch, var(--ink) 58%, var(--paper));
    font-size: 0.86rem;
    font-weight: 900;
  }

  .tiny-rule {
    display: flex;
    width: fit-content;
    align-items: center;
    gap: 10px;
    margin-top: 2px;
    padding: 7px 12px 7px 8px;
    border: 2px dashed color-mix(in oklch, var(--ink) 43%, transparent);
    border-radius: 999px;
    font-size: 0.76rem;
    font-weight: 800;
  }

  .rule-dots {
    display: flex;
    gap: 3px;
  }

  .rule-dots i {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--berry);
  }

  .game-panel {
    position: relative;
    width: 100%;
    max-width: 590px;
    justify-self: end;
    padding: clamp(20px, 3.6vw, 34px);
    border: 4px solid var(--ink);
    border-radius: 42px 31px 48px 35px;
    background:
      linear-gradient(135deg, color-mix(in oklch, var(--paper) 96%, var(--star)) 0 49.5%, transparent 50%) 0 0 / 22px 22px,
      var(--paper);
    box-shadow:
      8px 9px 0 color-mix(in oklch, var(--ink) 20%, transparent),
      inset 0 0 0 5px color-mix(in oklch, var(--star) 16%, transparent);
    rotate: 0.5deg;
  }
}

@layer game {
  .scoreboard {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 13px;
  }

  .player-card {
    position: relative;
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 9px;
    padding: 8px 11px;
    border: 3px solid transparent;
    border-radius: 20px 16px 20px 14px;
    transition: background-color 180ms ease-out, border-color 180ms ease-out, transform 180ms ease-out;
  }

  .player-card--star {
    justify-content: flex-end;
    border-radius: 16px 20px 14px 20px;
    text-align: right;
  }

  .player-card.is-active {
    border-color: var(--ink);
    background: color-mix(in oklch, var(--player-color) 24%, var(--paper));
    transform: translateY(-2px) rotate(-1deg);
  }

  .player-card--berry {
    --player-color: var(--berry);
  }

  .player-card--star {
    --player-color: var(--star);
  }

  .player-card.is-active::after {
    position: absolute;
    right: 12px;
    bottom: -9px;
    width: 13px;
    height: 13px;
    border-right: 3px solid var(--ink);
    border-bottom: 3px solid var(--ink);
    background: color-mix(in oklch, var(--player-color) 24%, var(--paper));
    content: "";
    rotate: 45deg;
  }

  .player-card--star.is-active::after {
    right: auto;
    left: 12px;
  }

  .player-card.is-winner {
    border-color: var(--ink);
    background: var(--star);
  }

  .piece--mini {
    width: 48px;
    height: 48px;
    flex: 0 0 auto;
  }

  .player-card div {
    display: flex;
    min-width: 0;
    align-items: baseline;
    gap: 6px;
  }

  .player-card span {
    overflow: hidden;
    font-size: 0.88rem;
    font-weight: 900;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .player-card strong {
    min-width: 1ch;
    font-size: 1.55rem;
    font-weight: 950;
    line-height: 1;
  }

  .round-count {
    display: flex;
    align-items: baseline;
    gap: 2px;
    color: color-mix(in oklch, var(--ink) 58%, var(--paper));
    font-size: 0.68rem;
    font-weight: 900;
    white-space: nowrap;
  }

  .round-count strong {
    color: var(--ink);
    font-size: 1.28rem;
  }

  .turn-banner {
    display: grid;
    margin: 25px 1px 18px;
    grid-template-columns: auto 1fr;
    align-items: center;
    column-gap: 10px;
  }

  .turn-banner__dot {
    width: 13px;
    height: 13px;
    grid-row: 1 / 3;
    border: 3px solid var(--ink);
    border-radius: 50%;
    background: var(--berry);
    box-shadow: 0 0 0 4px color-mix(in oklch, var(--berry) 22%, transparent);
    transition: background-color 180ms ease-out;
  }

  .turn-banner[data-player="star"] .turn-banner__dot,
  .turn-banner[data-state="draw"] .turn-banner__dot {
    background: var(--star);
  }

  .turn-banner[data-state="won"] .turn-banner__dot {
    border-radius: 0;
    background: var(--star);
    clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 95%, 50% 72%, 21% 95%, 32% 57%, 2% 35%, 39% 35%);
  }

  .turn-banner strong {
    font-size: clamp(1.05rem, 2.4vw, 1.32rem);
    font-weight: 950;
    line-height: 1.2;
  }

  .turn-banner > span:last-child {
    margin-top: 2px;
    color: color-mix(in oklch, var(--ink) 70%, var(--paper));
    font-size: 0.75rem;
    font-weight: 700;
  }

  .board-wrap {
    position: relative;
    width: min(100%, 430px);
    margin-inline: auto;
  }

  .board-ribbon {
    position: absolute;
    z-index: -1;
    top: 45%;
    width: 78px;
    height: 34px;
    border: 3px solid var(--ink);
    background: var(--berry);
  }

  .board-ribbon--left {
    left: -40px;
    rotate: -12deg;
  }

  .board-ribbon--right {
    right: -39px;
    background: var(--star);
    rotate: 13deg;
  }

  .game-board {
    position: relative;
    display: grid;
    width: 100%;
    aspect-ratio: 1;
    padding: clamp(10px, 2.2vw, 16px);
    border: 4px solid var(--ink);
    border-radius: 31px 23px 35px 25px;
    background: var(--board-blue);
    box-shadow:
      0 6px 0 color-mix(in oklch, var(--ink) 24%, transparent),
      inset 0 0 0 4px color-mix(in oklch, var(--paper) 22%, transparent);
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(7px, 1.5vw, 11px);
    rotate: -0.7deg;
  }

  .game-board::before,
  .game-board::after {
    position: absolute;
    z-index: -1;
    width: 26px;
    height: 26px;
    border: 3px solid var(--ink);
    border-radius: 50%;
    background: var(--leaf);
    content: "";
  }

  .game-board::before {
    top: -13px;
    left: 29px;
  }

  .game-board::after {
    right: 34px;
    bottom: -14px;
    background: var(--orange);
  }

  .cell {
    position: relative;
    display: grid;
    min-width: 0;
    min-height: 0;
    place-items: center;
    border: 3px solid var(--ink);
    border-radius: 19px 14px 20px 15px;
    background:
      radial-gradient(circle at 18% 18%, color-mix(in oklch, var(--star) 16%, transparent) 0 3px, transparent 4px),
      var(--cream);
    box-shadow:
      inset 0 -5px 0 color-mix(in oklch, var(--star) 16%, transparent),
      0 3px 0 color-mix(in oklch, var(--ink) 22%, transparent);
    cursor: pointer;
    transition: background-color 180ms ease-out, transform 160ms ease-out, box-shadow 160ms ease-out;
  }

  .cell:nth-child(even) {
    border-radius: 15px 20px 14px 19px;
    background-color: color-mix(in oklch, var(--cream) 88%, var(--star));
  }

  .cell::before {
    color: color-mix(in oklch, var(--ink) 17%, transparent);
    content: "+";
    font-size: clamp(1.6rem, 5vw, 2.6rem);
    font-weight: 500;
    transition: opacity 160ms ease-out, transform 160ms ease-out;
  }

  .cell.is-filled::before {
    display: none;
  }

  .cell:disabled {
    cursor: default;
    opacity: 1;
  }

  .cell.is-winning {
    z-index: 1;
    background: color-mix(in oklch, var(--star) 70%, var(--paper));
    box-shadow:
      inset 0 -5px 0 color-mix(in oklch, var(--orange) 26%, transparent),
      0 0 0 5px color-mix(in oklch, var(--star) 40%, transparent);
  }

  .piece--board {
    width: 78%;
    height: 78%;
    pointer-events: none;
  }

  @media (hover: hover) {
    .cell:not(:disabled):hover {
      z-index: 1;
      background: var(--paper);
      box-shadow:
        inset 0 -3px 0 color-mix(in oklch, var(--star) 16%, transparent),
        0 1px 0 color-mix(in oklch, var(--ink) 22%, transparent);
      transform: translateY(2px) rotate(1deg);
    }

    .cell:not(:disabled):hover::before {
      opacity: 0.56;
      transform: rotate(45deg) scale(1.08);
    }
  }

  .game-actions {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
  }

  .new-round-button,
  .reset-score-button {
    min-height: 48px;
    border: 3px solid var(--ink);
    cursor: pointer;
    font-weight: 950;
    transition: transform 160ms ease-out, box-shadow 160ms ease-out;
  }

  .new-round-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 19px;
    border-radius: 17px 14px 18px 13px;
    background: var(--star);
    box-shadow: 0 4px 0 var(--star-dark);
  }

  .new-round-button span {
    font-size: 1.3rem;
    line-height: 0;
  }

  .reset-score-button {
    padding: 10px 15px;
    border-color: color-mix(in oklch, var(--ink) 48%, transparent);
    border-radius: 14px 18px 13px 17px;
    background: transparent;
    color: color-mix(in oklch, var(--ink) 72%, var(--paper));
    box-shadow: none;
    font-size: 0.82rem;
  }

  @media (hover: hover) {
    .new-round-button:hover,
    .reset-score-button:hover {
      transform: translateY(2px) rotate(-1deg);
    }

    .new-round-button:hover {
      box-shadow: 0 2px 0 var(--star-dark);
    }

    .reset-score-button:hover {
      background: color-mix(in oklch, var(--ink) 7%, transparent);
    }
  }

  .music-note {
    margin-top: 12px;
    color: color-mix(in oklch, var(--ink) 57%, var(--paper));
    font-size: 0.68rem;
    font-weight: 700;
    text-align: center;
    transition: opacity 250ms ease-out, transform 250ms ease-out;
  }

  .music-note.is-hidden {
    opacity: 0;
    transform: translateY(5px);
  }
}

@layer motion {
  .friend--berry .piece {
    animation: friend-float 3.3s ease-in-out infinite alternate;
  }

  .friend--star .piece {
    animation: friend-float 3.6s 400ms ease-in-out infinite alternate-reverse;
  }

  .cloud--one {
    animation: cloud-drift 12s ease-in-out infinite alternate;
  }

  .cloud--two {
    animation: cloud-drift 15s 1s ease-in-out infinite alternate-reverse;
  }

  .cell.just-placed .piece {
    animation: piece-arrive 430ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }

  .cell.is-winning .piece {
    animation: winner-glow 850ms ease-in-out infinite alternate;
  }

  .celebration {
    position: fixed;
    z-index: 50;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
  }

  .celebration i {
    position: absolute;
    top: -8vh;
    left: var(--particle-x);
    color: var(--particle-color);
    font-size: clamp(1rem, 2.3vw, 1.8rem);
    font-style: normal;
    opacity: 0;
  }

  .celebration.is-active i {
    animation: confetti-fall var(--particle-duration) var(--particle-delay) cubic-bezier(0.16, 0.76, 0.33, 1) both;
  }

  @keyframes friend-float {
    to {
      transform: translateY(-7px) rotate(2deg);
    }
  }

  @keyframes cloud-drift {
    to {
      transform: translateX(28px);
    }
  }

  @keyframes piece-arrive {
    0% {
      opacity: 0;
      transform: translateY(-18px) scale(0.58) rotate(-15deg);
    }
    70% {
      opacity: 1;
      transform: translateY(2px) scale(1.04) rotate(2deg);
    }
    100% {
      opacity: 1;
      transform: translateY(0) scale(1) rotate(0);
    }
  }

  @keyframes winner-glow {
    to {
      filter: drop-shadow(0 7px 0 color-mix(in oklch, var(--ink) 12%, transparent));
      transform: translateY(-4px) rotate(2deg);
    }
  }

  @keyframes confetti-fall {
    0% {
      opacity: 0;
      transform: translateY(-6vh) rotate(0deg) scale(0.7);
    }
    12% {
      opacity: 1;
    }
    100% {
      opacity: 0.9;
      transform: translateY(112vh) rotate(var(--particle-turn)) scale(1);
    }
  }
}

@layer responsive {
  @media (max-width: 860px) {
    body {
      background: linear-gradient(180deg, var(--sky) 0 28%, var(--cream) 28% 100%);
    }

    .page-shell {
      width: min(650px, calc(100% - 28px));
      grid-template-columns: 1fr;
      gap: 22px;
      padding-top: 82px;
    }

    .story-panel {
      display: grid;
      padding: 0 8px;
      grid-template-columns: 1fr 180px;
      align-items: end;
    }

    .eyebrow,
    .intro-copy,
    .tiny-rule {
      grid-column: 1;
    }

    h1 {
      grid-column: 1;
      font-size: clamp(3.5rem, 12vw, 5.7rem);
    }

    .hero-friends {
      grid-row: 1 / 5;
      grid-column: 2;
      width: 180px;
      margin: 0;
      align-self: end;
    }

    .friend {
      min-height: 112px;
    }

    .piece--hero {
      width: 88px;
      height: 88px;
    }

    .speech,
    .versus {
      display: none;
    }

    .intro-copy {
      max-width: 25rem;
      margin-top: 18px;
      font-size: 0.97rem;
      line-height: 1.65;
    }

    .tiny-rule {
      margin-top: 16px;
    }

    .game-panel {
      max-width: 580px;
      justify-self: center;
      rotate: 0deg;
    }

    .sun {
      top: 2%;
      right: 15%;
      scale: 0.68;
    }

    .kite {
      display: none;
    }
  }

  @media (max-width: 520px) {
    .music-toggle {
      top: max(12px, env(safe-area-inset-top));
      right: max(12px, env(safe-area-inset-right));
    }

    .page-shell {
      width: min(100% - 20px, 470px);
      gap: 17px;
      padding-top: 72px;
      padding-bottom: max(22px, env(safe-area-inset-bottom));
    }

    .story-panel {
      display: block;
      padding-inline: 8px;
    }

    h1 {
      max-width: 5em;
      font-size: clamp(3.3rem, 19vw, 5rem);
    }

    .intro-copy {
      max-width: calc(100% - 98px);
      margin-top: 14px;
      font-size: 0.88rem;
    }

    .hero-friends {
      position: absolute;
      right: -4px;
      bottom: 3px;
      width: 112px;
    }

    .friend {
      min-height: 72px;
    }

    .friend--berry {
      margin-right: -12px;
    }

    .friend--star {
      margin-left: -12px;
    }

    .piece--hero {
      width: 66px;
      height: 66px;
    }

    .tiny-rule {
      margin-top: 13px;
      font-size: 0.67rem;
    }

    .game-panel {
      padding: 17px 14px 15px;
      border-width: 3px;
      border-radius: 29px 23px 31px 25px;
      box-shadow: 5px 6px 0 color-mix(in oklch, var(--ink) 19%, transparent);
    }

    .scoreboard {
      gap: 4px;
    }

    .player-card {
      gap: 4px;
      padding: 6px 7px;
      border-width: 2px;
    }

    .piece--mini {
      width: 37px;
      height: 37px;
    }

    .player-card span {
      font-size: 0.76rem;
    }

    .player-card strong {
      font-size: 1.25rem;
    }

    .round-count span {
      display: none;
    }

    .round-count strong::after {
      color: color-mix(in oklch, var(--ink) 58%, var(--paper));
      content: "局";
      font-size: 0.6rem;
      margin-left: 1px;
    }

    .turn-banner {
      margin: 18px 4px 14px;
    }

    .turn-banner strong {
      font-size: 1rem;
    }

    .turn-banner > span:last-child {
      font-size: 0.68rem;
    }

    .game-board {
      padding: 9px;
      border-width: 3px;
      border-radius: 23px 18px 25px 19px;
      gap: 7px;
    }

    .cell {
      border-width: 2.5px;
      border-radius: 15px 11px 16px 12px;
    }

    .game-actions {
      margin-top: 16px;
    }

    .new-round-button,
    .reset-score-button {
      min-height: 44px;
      border-width: 2.5px;
    }

    .new-round-button {
      padding: 8px 15px;
    }

    .reset-score-button {
      padding: 8px 12px;
    }

    .board-ribbon {
      display: none;
    }
  }

  @media (max-height: 760px) and (min-width: 861px) {
    .page-shell {
      padding-block: 55px 30px;
      scale: 0.92;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      scroll-behavior: auto !important;
      animation-duration: 0.001ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.001ms !important;
    }
  }
}