:root {
    --bg: #0b1020;
    --panel: #141b28;
    --panel-2: #253241;
    --line: #3e5363;
    --text: #f8fafc;
    --muted: #a9b4c7;
    --gold: #f6c445;
    --cyan: #39bdf8;
    --green: #26c281;
    --red: #ef5350;
    --violet: #8f7cf7;
    --amber: #ff8f4f;
    --hand: #66758d;
    --active-finger: #ffd166;
}

* {
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    height: 100%;
}

body {
    margin: 0;
    overflow: hidden;
    color: var(--text);
    font-family: "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
    background: var(--bg);
    user-select: none;
}

button {
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 8px;
    padding: 10px 16px;
    color: #ffffff;
    font-size: 16px;
    font-weight: 800;
    background: linear-gradient(180deg, #2a9ce0, #176da9);
    box-shadow: 0 4px 0 rgba(0, 0, 0, 0.32), 0 0 20px rgba(57, 189, 248, 0.22);
    cursor: pointer;
}

button:active {
    transform: translateY(2px);
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.25);
}

.game-shell {
    display: grid;
    grid-template-rows: 72px minmax(260px, 1fr) 230px;
    width: 100vw;
    height: 100vh;
    min-width: 900px;
    background: linear-gradient(180deg, #121827 0%, #07101d 100%);
}

.top-bar {
    display: grid;
    grid-template-columns: 1fr minmax(300px, 420px) 1fr;
    align-items: center;
    gap: 20px;
    padding: 0 24px;
    border-bottom: 1px solid rgba(119, 160, 178, 0.3);
    background: linear-gradient(180deg, rgba(21, 31, 45, 0.98), rgba(13, 21, 34, 0.96));
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.22);
    z-index: 20;
}

.status-group,
.control-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.control-group {
    justify-content: flex-end;
}

.stat {
    display: grid;
    gap: 2px;
    min-width: 82px;
}

.stat-label,
.shield-title span {
    color: var(--muted);
    font-size: 14px;
    font-weight: 700;
}

.stat strong {
    color: var(--gold);
    font-size: 28px;
    line-height: 1;
}

.shield-panel {
    display: grid;
    gap: 8px;
}

.shield-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.shield-title strong {
    color: #72f2a4;
    font-size: 24px;
}

.shield-track {
    height: 18px;
    padding: 3px;
    border: 2px solid #41516f;
    border-radius: 8px;
    background: #0b1220;
}

.shield-fill {
    width: 100%;
    height: 100%;
    border-radius: 5px;
    background: linear-gradient(90deg, #24c96f, #9df06f);
    transition: width 0.2s ease, background 0.2s ease;
}

.game-area {
    position: relative;
    overflow: hidden;
    border-bottom: 2px solid rgba(77, 186, 226, 0.72);
    background:
        radial-gradient(circle at 50% 96%, rgba(38, 194, 129, 0.18), transparent 28%),
        radial-gradient(circle at 82% 18%, rgba(255, 143, 79, 0.14), transparent 26%),
        linear-gradient(180deg, #0e1627 0%, #08101c 68%, #101a23 100%);
}

.three-stage {
    position: absolute;
    inset: 0;
    z-index: 1;
    overflow: hidden;
    background: #07101d;
}

.three-stage canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.stars,
.stars::before,
.stars::after {
    position: absolute;
    inset: 0;
    content: "";
    background-image:
        radial-gradient(circle, rgba(255, 255, 255, 0.9) 1px, transparent 1.5px),
        radial-gradient(circle, rgba(94, 221, 255, 0.8) 1px, transparent 1.5px);
    background-size: 92px 82px, 137px 121px;
    background-position: 12px 8px, 52px 45px;
    z-index: 2;
    opacity: 0.32;
    pointer-events: none;
}

.stars::before {
    transform: translateY(18px);
    opacity: 0.35;
}

.stars::after {
    transform: translateY(-20px);
    opacity: 0.2;
}

.lane-overlay {
    position: absolute;
    inset: 74px 7% 0;
    z-index: 3;
    display: grid;
    grid-template-columns: repeat(10, minmax(48px, 1fr));
    gap: 8px;
    pointer-events: none;
    perspective: 800px;
}

.lane-guide {
    position: relative;
    min-width: 0;
    border-left: 1px solid rgba(148, 211, 231, 0.16);
    border-right: 1px solid rgba(148, 211, 231, 0.12);
    background: linear-gradient(180deg, rgba(57, 189, 248, 0.03), rgba(57, 189, 248, 0.12) 70%, rgba(255, 209, 102, 0.12));
    transform-origin: 50% 100%;
    transform: rotateX(13deg);
}

.lane-guide::before,
.lane-guide::after {
    position: absolute;
    left: 12%;
    right: 12%;
    content: "";
    border-radius: 999px;
}

.lane-guide::before {
    top: 0;
    bottom: 72px;
    background: linear-gradient(180deg, transparent, rgba(57, 189, 248, 0.2), transparent);
    opacity: 0.5;
}

.lane-guide::after {
    bottom: 22px;
    height: 5px;
    background: rgba(246, 196, 69, 0.34);
    box-shadow: 0 0 18px rgba(246, 196, 69, 0.28);
}

.lane-guide.active {
    border-color: rgba(255, 209, 102, 0.72);
    background: linear-gradient(180deg, rgba(246, 196, 69, 0.05), rgba(246, 196, 69, 0.18) 70%, rgba(246, 196, 69, 0.34));
    box-shadow: inset 0 0 30px rgba(246, 196, 69, 0.16), 0 0 24px rgba(246, 196, 69, 0.16);
}

.lane-guide.error {
    border-color: rgba(239, 83, 80, 0.82);
    background: linear-gradient(180deg, rgba(239, 83, 80, 0.06), rgba(239, 83, 80, 0.22));
    animation: laneError 0.28s ease-in-out;
}

@keyframes laneError {
    0%, 100% { transform: rotateX(13deg) translateX(0); }
    25% { transform: rotateX(13deg) translateX(-5px); }
    75% { transform: rotateX(13deg) translateX(5px); }
}

.base {
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 170px;
    height: 112px;
    transform: translateX(-50%);
    z-index: 4;
    opacity: 1;
    transition: left 0.16s ease-out;
}

.turret-shadow {
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 0;
    height: 20px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.38);
    filter: blur(2px);
}

.turret-body {
    position: absolute;
    left: 50%;
    bottom: 0;
    width: 136px;
    height: 58px;
    border: 3px solid #82d9ff;
    border-radius: 70px 70px 14px 14px;
    transform: translateX(-50%);
    background: linear-gradient(180deg, #7f8aa3, #26364f 72%, #16243a);
    box-shadow: inset 0 -8px 0 rgba(0, 0, 0, 0.18), 0 0 28px rgba(57, 189, 248, 0.46);
}

.turret-barrel {
    position: absolute;
    left: 50%;
    bottom: 42px;
    width: 22px;
    height: 84px;
    border: 3px solid #d8f8ff;
    border-radius: 16px 16px 8px 8px;
    transform: translateX(-50%) rotate(var(--aim-angle, 0deg));
    transform-origin: 50% 78px;
    background: linear-gradient(90deg, #6ccff6, #f5fbff 48%, #3a9ccc);
    box-shadow: 0 0 18px rgba(57, 189, 248, 0.72);
    transition: transform 0.12s ease-out;
}

.turret-barrel::before {
    position: absolute;
    left: 50%;
    top: -13px;
    width: 38px;
    height: 20px;
    border-radius: 18px 18px 8px 8px;
    content: "";
    transform: translateX(-50%);
    background: linear-gradient(180deg, #ffffff, #59d8ff);
    box-shadow: 0 0 18px rgba(255, 255, 255, 0.82);
}

.turret-core {
    position: absolute;
    left: 50%;
    bottom: 22px;
    width: 42px;
    height: 42px;
    border: 3px solid rgba(255, 255, 255, 0.86);
    border-radius: 50%;
    transform: translateX(-50%);
    background: radial-gradient(circle, #ffffff 0 20%, #8be9ff 42%, #188bc8 78%);
    box-shadow: 0 0 22px rgba(57, 189, 248, 0.95);
}

.turret.firing .turret-barrel {
    animation: turretKick 0.18s ease-out;
}

.turret.firing .turret-barrel::before {
    box-shadow: 0 -12px 32px rgba(255, 244, 177, 0.95), 0 0 24px #ffffff;
}

@keyframes turretKick {
    0% { translate: 0 0; }
    45% { translate: 0 8px; }
    100% { translate: 0 0; }
}

.base.danger {
    animation: basePulse 0.7s infinite alternate;
}

@keyframes basePulse {
    from { filter: drop-shadow(0 0 0 rgba(239, 83, 80, 0)); }
    to { filter: drop-shadow(0 0 20px rgba(239, 83, 80, 0.9)); }
}

.enemy {
    position: absolute;
    width: 58px;
    height: 58px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid rgba(155, 230, 255, 0.84);
    border-radius: 12px;
    color: #fff;
    font-size: 35px;
    font-weight: 950;
    line-height: 1;
    background: rgba(5, 12, 22, 0.44);
    box-shadow: 0 0 20px rgba(57, 189, 248, 0.45), inset 0 0 16px rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(3px);
    text-transform: uppercase;
    z-index: 6;
    text-shadow: 0 3px 10px rgba(0, 0, 0, 0.75);
}

.enemy::before {
    position: absolute;
    top: -30px;
    content: attr(data-icon);
    font-size: 30px;
}

.enemy::after {
    position: absolute;
    left: 50%;
    bottom: -24px;
    min-width: 56px;
    padding: 2px 6px;
    border-radius: 5px;
    color: #dbe6f7;
    font-size: 12px;
    font-weight: 900;
    text-align: center;
    transform: translateX(-50%);
    content: attr(data-label);
    background: rgba(8, 12, 22, 0.72);
    opacity: 0;
}

.enemy.target {
    border-color: var(--gold);
    background: rgba(94, 72, 13, 0.56);
    box-shadow: 0 0 34px rgba(246, 196, 69, 0.95), inset 0 0 20px rgba(255, 255, 255, 0.16);
    transform: scale(1.14);
    z-index: 7;
}

.enemy.target::after {
    opacity: 1;
}

.enemy.locked {
    border-color: #ffffff;
    filter: brightness(1.35);
    opacity: 0.58;
}

.enemy.locked::before {
    content: "◎";
    color: #ffffff;
    text-shadow: 0 0 16px rgba(255, 255, 255, 0.95);
}

.enemy.danger {
    border-color: var(--red);
    border-radius: 6px;
    background: linear-gradient(135deg, rgba(93, 27, 38, 0.96), rgba(34, 25, 42, 0.96));
    box-shadow: 0 0 24px rgba(239, 83, 80, 0.7);
    animation: dangerBlink 0.72s infinite alternate;
}

.enemy.supply {
    border-color: var(--green);
    border-radius: 50%;
    background: radial-gradient(circle, rgba(38, 194, 129, 0.36), rgba(18, 42, 42, 0.96));
    box-shadow: 0 0 24px rgba(38, 194, 129, 0.7);
}

.enemy.fast {
    width: 70px;
    border-color: #8f7cf7;
    border-radius: 999px 12px 12px 999px;
    background: linear-gradient(90deg, rgba(34, 41, 82, 0.98), rgba(24, 72, 92, 0.98));
    box-shadow: -18px 0 24px rgba(143, 124, 247, 0.35), 0 0 26px rgba(57, 189, 248, 0.68);
}

.enemy.fast::before {
    left: -18px;
    top: 15px;
    color: #b9efff;
    text-shadow: 0 0 12px #39bdf8;
}

.enemy.fast::after,
.enemy.danger.target::after,
.enemy.fast.target::after {
    opacity: 1;
}

.enemy.fast.target {
    border-color: var(--gold);
    box-shadow: -24px 0 30px rgba(143, 124, 247, 0.55), 0 0 34px rgba(246, 196, 69, 0.95);
}

@keyframes dangerBlink {
    from { filter: brightness(1); }
    to { filter: brightness(1.35); }
}

.boss {
    position: absolute;
    left: 50%;
    top: 28px;
    width: min(620px, 72vw);
    min-height: 150px;
    padding: 14px 18px 18px;
    border: 3px solid var(--violet);
    border-radius: 22px;
    transform: translateX(-50%);
    background: linear-gradient(180deg, rgba(51, 32, 91, 0.52), rgba(16, 24, 36, 0.6));
    box-shadow: 0 0 34px rgba(143, 124, 247, 0.8), inset 0 0 28px rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(4px);
    z-index: 7;
}

.boss.charging {
    border-color: var(--red);
    box-shadow: 0 0 40px rgba(239, 83, 80, 0.9);
    animation: bossCharge 0.55s infinite alternate;
}

.boss-wide {
    border-color: #b5a7ff;
}

.boss-spike {
    border-color: var(--red);
    background: linear-gradient(180deg, rgba(93, 27, 38, 0.58), rgba(16, 24, 36, 0.64));
}

.boss-ring {
    border-color: var(--cyan);
    background: linear-gradient(180deg, rgba(21, 67, 88, 0.58), rgba(16, 35, 42, 0.64));
}

.boss-dualcore {
    border-color: var(--gold);
}

.boss-ship {
    position: relative;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
}

.boss-core {
    width: 108px;
    height: 44px;
    display: grid;
    place-items: center;
    border: 2px solid #d9ccff;
    border-radius: 40px 40px 16px 16px;
    color: #fff;
    font-size: 20px;
    font-weight: 950;
    background: linear-gradient(180deg, #7858d6, #382363);
    box-shadow: 0 0 18px rgba(143, 124, 247, 0.9);
}

.boss-spike .boss-core {
    background: linear-gradient(180deg, #e25a5a, #5b1c28);
}

.boss-ring .boss-core {
    background: linear-gradient(180deg, #42c7e8, #18465d);
}

.boss-dualcore .boss-core {
    background: linear-gradient(180deg, #f6c445, #57431c);
}

.boss-wing {
    width: 78px;
    height: 24px;
    border: 2px solid #8f7cf7;
    background: linear-gradient(180deg, #3f316e, #1f2942);
}

.boss-wing.left {
    border-radius: 30px 5px 20px 30px;
    transform: skewY(12deg);
}

.boss-wing.right {
    border-radius: 5px 30px 30px 20px;
    transform: skewY(-12deg);
}

.boss-title {
    display: flex;
    justify-content: space-between;
    color: #e9ddff;
    font-size: 17px;
    font-weight: 900;
}

.boss-hp {
    display: flex;
    gap: 8px;
    margin: 12px 0;
}

.boss-heart {
    flex: 1;
    height: 12px;
    border-radius: 5px;
    background: var(--red);
    box-shadow: 0 0 10px rgba(239, 83, 80, 0.8);
}

.boss-heart.empty {
    background: #45516a;
    box-shadow: none;
}

.boss-sequence {
    display: flex;
    justify-content: center;
    gap: 5px;
    flex-wrap: nowrap;
}

.boss-key {
    width: clamp(36px, 5vw, 48px);
    height: 46px;
    display: grid;
    place-items: center;
    border: 2px solid #ffffff;
    border-radius: 8px;
    color: #101525;
    font-size: clamp(22px, 3vw, 27px);
    font-weight: 950;
    background: #e9ddff;
    box-shadow: inset 0 -5px 0 rgba(0, 0, 0, 0.18);
}

.boss-key.done {
    color: #ffffff;
    background: var(--green);
    border-color: #99f3bf;
    transform: translateY(4px) scale(0.9);
    opacity: 0.72;
}

.boss-key.next {
    background: var(--gold);
    box-shadow: 0 0 18px rgba(246, 196, 69, 1);
    transform: scale(1.16);
}

@keyframes bossCharge {
    from { filter: brightness(1); }
    to { filter: brightness(1.28); }
}

.projectile {
    position: absolute;
    left: 0;
    top: 0;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 11;
    opacity: 1;
    background: radial-gradient(circle at 35% 28%, #ffffff 0 18%, #73dcff 34%, #188bc8 72%);
    box-shadow: 0 0 18px rgba(86, 216, 255, 0.95), -18px 0 20px rgba(57, 189, 248, 0.35);
}

.projectile::after {
    position: absolute;
    right: 16px;
    top: 8px;
    width: 34px;
    height: 6px;
    border-radius: 999px;
    content: "";
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.82));
}

.projectile.danger,
.projectile.bossMinion {
    background: radial-gradient(circle at 35% 28%, #fff4bd 0 18%, #ff7b72 36%, #c3293f 74%);
    box-shadow: 0 0 20px rgba(239, 83, 80, 0.95), -18px 0 20px rgba(255, 123, 114, 0.35);
}

.projectile.fast {
    width: 28px;
    height: 18px;
    border-radius: 999px;
    background: radial-gradient(circle at 72% 50%, #ffffff 0 18%, #b5a7ff 34%, #6e5cec 76%);
    box-shadow: -22px 0 22px rgba(143, 124, 247, 0.55), 0 0 20px #8f7cf7;
}

.projectile.supply {
    background: radial-gradient(circle at 35% 28%, #ffffff 0 18%, #7df1b6 36%, #25b978 74%);
    box-shadow: 0 0 20px rgba(38, 194, 129, 0.95), -18px 0 18px rgba(125, 241, 182, 0.35);
}

.projectile.miss {
    background: radial-gradient(circle at 35% 28%, #ffffff 0 18%, #cbd5e1 36%, #64748b 74%);
    box-shadow: 0 0 16px rgba(203, 213, 225, 0.85), -18px 0 18px rgba(148, 163, 184, 0.28);
}

.burst,
.floating-text,
.explosion,
.particle {
    position: absolute;
    pointer-events: none;
    z-index: 12;
}

.burst {
    font-size: 54px;
    animation: pop 0.46s ease-out forwards;
}

.explosion {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    background:
        radial-gradient(circle, rgba(255, 255, 255, 0.98) 0 12%, rgba(246, 196, 69, 0.95) 24%, rgba(57, 189, 248, 0.7) 48%, transparent 70%);
    box-shadow: 0 0 34px rgba(246, 196, 69, 0.78);
    animation: explosionPop 0.48s ease-out forwards;
}

.explosion.danger,
.explosion.bossMinion,
.explosion.boss {
    background:
        radial-gradient(circle, rgba(255, 255, 255, 0.98) 0 12%, rgba(255, 193, 93, 0.98) 26%, rgba(239, 83, 80, 0.72) 52%, transparent 72%);
    box-shadow: 0 0 38px rgba(239, 83, 80, 0.78);
}

.explosion.supply {
    background:
        radial-gradient(circle, rgba(255, 255, 255, 0.98) 0 12%, rgba(125, 241, 182, 0.95) 30%, rgba(38, 194, 129, 0.62) 54%, transparent 72%);
    box-shadow: 0 0 36px rgba(38, 194, 129, 0.78);
}

.explosion.miss {
    width: 54px;
    height: 54px;
    background:
        radial-gradient(circle, rgba(255, 255, 255, 0.9) 0 10%, rgba(203, 213, 225, 0.72) 34%, rgba(100, 116, 139, 0.28) 58%, transparent 74%);
    box-shadow: 0 0 22px rgba(148, 163, 184, 0.5);
}

.particle {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gold);
    box-shadow: 0 0 10px currentColor;
    animation: particleFly 0.56s ease-out forwards;
}

.particle.cyan { color: var(--cyan); background: var(--cyan); }
.particle.red { color: var(--red); background: var(--red); }
.particle.green { color: var(--green); background: var(--green); }
.particle.gold { color: var(--gold); background: var(--gold); }

.floating-text {
    color: var(--gold);
    font-size: 24px;
    font-weight: 950;
    text-shadow: 0 3px 8px rgba(0, 0, 0, 0.8);
    animation: floatUp 1s ease-out forwards;
}

@keyframes pop {
    from { opacity: 0; transform: scale(0.4); }
    40% { opacity: 1; transform: scale(1.25); }
    to { opacity: 0; transform: scale(0.92); }
}

@keyframes explosionPop {
    from { opacity: 0; transform: translate(-50%, -50%) scale(0.35); }
    35% { opacity: 1; transform: translate(-50%, -50%) scale(1.16); }
    to { opacity: 0; transform: translate(-50%, -50%) scale(1.5); }
}

@keyframes particleFly {
    from { opacity: 1; transform: translate(-50%, -50%) scale(1); }
    to { opacity: 0; transform: translate(calc(-50% + var(--dx)), calc(-50% + var(--dy))) scale(0.25); }
}

@keyframes floatUp {
    from { opacity: 0; transform: translateY(8px); }
    20% { opacity: 1; }
    to { opacity: 0; transform: translateY(-58px); }
}

.wave-banner,
.combo-pill {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 14;
    pointer-events: none;
}

.wave-banner {
    top: 24%;
    color: var(--gold);
    font-size: 54px;
    font-weight: 950;
    text-shadow: 0 0 28px rgba(246, 196, 69, 0.9);
    opacity: 0;
}

.wave-banner.show {
    animation: banner 1.8s ease-in-out forwards;
}

@keyframes banner {
    0% { opacity: 0; transform: translate(-50%, 20px) scale(0.8); }
    18% { opacity: 1; transform: translate(-50%, 0) scale(1.08); }
    75% { opacity: 1; transform: translate(-50%, 0) scale(1); }
    100% { opacity: 0; transform: translate(-50%, -30px) scale(0.92); }
}

.combo-pill {
    top: 18px;
    padding: 8px 18px;
    border-radius: 999px;
    color: #101525;
    font-size: 22px;
    font-weight: 950;
    background: var(--gold);
    opacity: 0;
    transition: opacity 0.15s ease;
}

.combo-pill.show {
    opacity: 1;
}

.coach-panel {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 22px;
    padding: 12px 18px;
    border-top: 1px solid rgba(119, 160, 178, 0.24);
    background: linear-gradient(180deg, var(--panel), #0d1420);
    box-shadow: 0 -10px 28px rgba(0, 0, 0, 0.24);
}

.hand-svg {
    width: 178px;
    height: 178px;
    flex: 0 0 178px;
}

.finger-path {
    fill: var(--hand);
    stroke: #34435f;
    stroke-width: 2;
    transition: fill 0.12s ease, filter 0.12s ease;
}

.finger-path.palm {
    fill: #516078;
}

.finger-path.active {
    fill: var(--active-finger);
    filter: drop-shadow(0 0 14px rgba(255, 209, 102, 0.95));
}

.hand-svg text {
    fill: var(--muted);
    font-size: 20px;
    font-weight: 800;
}

.key-card {
    width: 170px;
    min-height: 156px;
    display: grid;
    place-items: center;
    align-content: center;
    gap: 8px;
    border: 2px solid #41516f;
    border-radius: 8px;
    background: linear-gradient(180deg, rgba(29, 43, 57, 0.78), rgba(9, 16, 26, 0.82));
    box-shadow: inset 0 0 22px rgba(57, 189, 248, 0.08);
}

#current-key {
    color: var(--gold);
    font-size: 76px;
    font-weight: 950;
    line-height: 0.94;
    text-shadow: 0 0 26px rgba(246, 196, 69, 0.75);
}

#finger-name-text {
    color: #ffffff;
    font-size: 21px;
}

#target-type {
    color: var(--muted);
    font-size: 17px;
    font-weight: 800;
}

.keyboard-deck {
    width: min(560px, 50vw);
    min-width: 440px;
    display: grid;
    grid-template-columns: repeat(10, minmax(34px, 1fr));
    gap: 7px;
    align-items: stretch;
    padding: 12px;
    border: 1px solid rgba(126, 166, 184, 0.42);
    border-radius: 8px;
    background: linear-gradient(180deg, rgba(35, 50, 62, 0.9), rgba(9, 15, 24, 0.95));
    box-shadow: inset 0 0 22px rgba(57, 189, 248, 0.1), 0 12px 30px rgba(0, 0, 0, 0.26);
}

.key-column {
    display: grid;
    gap: 5px;
    min-width: 0;
}

.keycap {
    height: 26px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(190, 220, 234, 0.26);
    border-radius: 6px;
    color: #eaf6ff;
    font-size: 15px;
    font-weight: 950;
    background: linear-gradient(180deg, #263747, #14202d);
    box-shadow: inset 0 -3px 0 rgba(0, 0, 0, 0.24);
}

.finger-tag {
    min-height: 28px;
    display: grid;
    place-items: center;
    padding: 3px;
    border-radius: 6px;
    color: #a9b4c7;
    font-size: 11px;
    font-weight: 900;
    line-height: 1.1;
    text-align: center;
    background: rgba(255, 255, 255, 0.05);
}

.key-column.active .keycap,
.keycap.active {
    color: #111827;
    background: linear-gradient(180deg, #ffe28b, #f6c445);
    border-color: rgba(255, 255, 255, 0.88);
    transform: translateY(2px);
    box-shadow: 0 0 22px rgba(246, 196, 69, 0.78), inset 0 -2px 0 rgba(0, 0, 0, 0.16);
}

.key-column.active .finger-tag {
    color: #ffffff;
    background: rgba(246, 196, 69, 0.22);
}

.overlay,
.summary {
    position: absolute;
    inset: 0;
    z-index: 50;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px;
    text-align: center;
    background: rgba(10, 16, 32, 0.92);
}

.overlay h1,
.summary h2 {
    margin: 0 0 14px;
    color: var(--gold);
    font-size: 58px;
    line-height: 1;
    text-shadow: 0 0 28px rgba(246, 196, 69, 0.7);
}

.overlay p {
    max-width: 720px;
    margin: 0 0 30px;
    color: #dbe6f7;
    font-size: 23px;
    line-height: 1.7;
}

.overlay button,
.summary button {
    min-width: 190px;
    padding: 16px 30px;
    font-size: 24px;
    background: linear-gradient(180deg, #28c482, #14915f);
}

.summary.hidden,
.overlay.hidden {
    display: none;
}

.summary dl {
    display: grid;
    grid-template-columns: repeat(2, 180px);
    gap: 14px;
    margin: 14px 0 28px;
}

.summary dl div {
    padding: 14px;
    border: 1px solid #41516f;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.06);
}

.summary dt {
    color: var(--muted);
    font-size: 16px;
    font-weight: 800;
}

.summary dd {
    margin: 6px 0 0;
    color: #ffffff;
    font-size: 24px;
    font-weight: 950;
}

.shake {
    animation: shake 0.28s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-8px); }
    75% { transform: translateX(8px); }
}

@media (max-width: 920px), (max-height: 650px) {
    .game-shell {
        min-width: 760px;
        grid-template-rows: 64px minmax(220px, 1fr) 190px;
    }

    .top-bar {
        padding: 0 14px;
        gap: 12px;
    }

    .stat strong {
        font-size: 24px;
    }

    .coach-panel {
        gap: 14px;
    }

    .hand-svg {
        width: 145px;
        height: 145px;
        flex-basis: 145px;
    }

    .key-card {
        width: 140px;
        min-height: 150px;
    }

    .keyboard-deck {
        width: min(500px, 52vw);
        min-width: 380px;
        gap: 5px;
        padding: 9px;
    }

    #current-key {
        font-size: 70px;
    }
}