.mg-shell {
    min-height: calc(100vh - var(--main-nav-height, 88px));
    min-height: calc(100dvh - var(--main-nav-height, 88px));
    background: #f8fafc;
    color: #172033;
    padding-right: 16px;
    padding-bottom: 32px;
    padding-left: 16px;
}

.mg-wrap {
    width: min(980px, 100%);
    margin: 0 auto;
}

.mg-page-head,
.mg-play-head {
    display: flex;
    gap: 14px;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0 18px;
}

.mg-page-head {
    display: block;
}

.mg-kicker {
    display: inline-flex;
    align-items: center;
    min-height: 24px;
    border: 1px solid #ddd6fe;
    border-radius: 999px;
    padding: 3px 10px;
    background: #f5f3ff;
    color: #673ab7;
    font-size: 0.78rem;
    font-weight: 900;
}

.mg-page-head h1,
.mg-play-head h1 {
    margin: 8px 0 0;
    font-size: clamp(2rem, 5vw, 3rem);
    line-height: 1.08;
    font-weight: 900;
}

.mg-page-head p {
    max-width: 520px;
    margin: 10px 0 0;
    color: #64748b;
    font-size: 1rem;
}

.mg-back {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 58px;
    min-height: 42px;
    border: 1px solid #d7dce5;
    border-radius: 8px;
    background: #ffffff;
    color: #334155;
    font-weight: 800;
    text-decoration: none;
}

.mg-game-grid,
.mg-lobby-stage {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.mg-game-card {
    display: grid;
    min-height: 360px;
    align-content: stretch;
    grid-template-rows: auto 1fr auto auto;
    gap: 14px;
    border: 1px solid #d7dce5;
    border-radius: 8px;
    padding: 18px;
    background: #ffffff;
    color: #172033;
    text-decoration: none;
    box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
}

.mg-game-card:hover {
    border-color: #b9a8f5;
}

.mg-card-icon,
.mg-card-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: #e6e6fa;
    color: #4527a0;
    font-weight: 900;
}

.mg-card-icon {
    width: 58px;
    height: 58px;
    font-size: 1.2rem;
}

.mg-card-label {
    width: fit-content;
    min-height: 28px;
    padding: 4px 10px;
    font-size: 0.82rem;
}

.mg-card-copy {
    display: grid;
    gap: 7px;
    position: relative;
    z-index: 1;
}

.mg-game-card strong {
    font-size: clamp(1.55rem, 4vw, 2.15rem);
    line-height: 1.12;
    font-weight: 900;
}

.mg-game-card span:not(.mg-card-icon):not(.mg-card-label) {
    color: #64748b;
    font-weight: 700;
}

.mg-game-card em {
    align-self: end;
    width: fit-content;
    min-height: 38px;
    border-radius: 8px;
    padding: 8px 14px;
    background: #673ab7;
    color: #ffffff;
    font-style: normal;
    font-weight: 900;
}

.mg-game-preview {
    position: relative;
    z-index: 1;
    display: grid;
    min-height: 138px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 14px;
    background: #f8fafc;
}

.mg-game-preview--nim {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: end;
    gap: 10px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.7), rgba(220, 252, 231, 0.62)),
        #ecfdf5;
}

.mg-preview-pile {
    display: flex;
    flex-wrap: wrap-reverse;
    align-content: flex-start;
    justify-content: center;
    gap: 5px;
    min-height: 86px;
    border: 1px solid #bbf7d0;
    border-radius: 8px;
    padding: 8px;
    background: #f0fdf4;
    box-shadow: inset 0 -6px 0 rgba(22, 101, 52, 0.07);
}

.mg-preview-pile span {
    width: 22px;
    height: 22px;
    border: 2px solid #047857;
    border-radius: 50%;
    background: #86efac;
    box-shadow: inset -4px -4px 0 rgba(4, 120, 87, 0.15), 0 4px 8px rgba(4, 120, 87, 0.14);
}

.mg-preview-pile span:nth-child(2n) {
    border-color: #7c3aed;
    background: #ddd6fe;
}

.mg-game-preview--tf {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-content: center;
    gap: 8px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(254, 249, 195, 0.68)),
        #fffbeb;
}

.mg-game-preview--tf span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 70px;
    border: 1px solid #fde68a;
    border-radius: 8px;
    background: #fef3c7;
    color: #172033;
    font-size: 1.8rem;
    font-weight: 900;
    box-shadow: inset 0 -7px 0 rgba(202, 138, 4, 0.1), 0 8px 14px rgba(202, 138, 4, 0.1);
}

.mg-game-preview--tf b {
    grid-column: 1 / -1;
    min-height: 30px;
    border: 1px solid #bfdbfe;
    border-radius: 8px;
    background: #eff6ff;
    color: #1d4ed8;
    text-align: center;
    font-size: 1.05rem;
    line-height: 30px;
}

.mg-rule-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}

.mg-rule-chips span {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    border: 1px solid #c7d2fe;
    border-radius: 999px;
    padding: 5px 10px;
    background: #eef2ff;
    color: #3730a3;
    font-size: 0.84rem;
    font-weight: 900;
}

.mg-board-panel {
    border: 1px solid #d7dce5;
    border-radius: 8px;
    padding: 16px;
    background: #ffffff;
    box-shadow: 0 14px 32px rgba(15, 23, 42, 0.08);
}

.mg-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-bottom: 16px;
}

.mg-radio {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 42px;
    border: 1px solid #d7dce5;
    border-radius: 8px;
    padding: 8px 10px;
    background: #f8fafc;
    color: #334155;
    font-weight: 800;
}

.mg-primary,
.mg-secondary,
.mg-take {
    min-height: 42px;
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 9px 14px;
    font: inherit;
    font-weight: 900;
    cursor: pointer;
}

.mg-primary {
    background: #673ab7;
    color: #ffffff;
}

.mg-secondary {
    border-color: #d7dce5;
    background: #f8fafc;
    color: #334155;
}

.mg-primary:disabled,
.mg-secondary:disabled,
.mg-take:disabled {
    opacity: 0.48;
    cursor: default;
}

.mg-piles {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    min-height: 240px;
}

.mg-pile {
    display: grid;
    grid-template-rows: auto 1fr auto;
    gap: 12px;
    min-height: 230px;
    border: 1px solid #d7dce5;
    border-radius: 8px;
    padding: 14px;
    background: #fbfdff;
}

.mg-pile-head {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    color: #334155;
    font-weight: 900;
}

.mg-stones {
    display: grid;
    grid-template-columns: repeat(3, 24px);
    place-content: center;
    gap: 8px;
    min-height: 96px;
}

.mg-stone {
    width: 24px;
    height: 24px;
    border: 2px solid #2f855a;
    border-radius: 50%;
    background: #bbf7d0;
}

.mg-take-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
}

.mg-take-row span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    border: 1px solid #ddd6fe;
    border-radius: 8px;
    background: #f5f3ff;
    color: #4527a0;
    font-weight: 900;
}

.mg-take {
    background: #e6e6fa;
    color: #4527a0;
}

.mg-number-row {
    display: grid;
    grid-template-columns: repeat(4, minmax(56px, 1fr));
    gap: 10px;
    min-height: 92px;
    margin-bottom: 16px;
}

.mg-number {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 84px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    background: #fefce8;
    color: #172033;
    font-family: inherit;
    font-size: clamp(1.8rem, 7vw, 3rem);
    font-weight: 900;
    padding: 0;
    cursor: pointer;
}

.mg-number-preview {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 84px;
    border: 1px solid #fde68a;
    border-radius: 8px;
    background: #fef9c3;
    color: #172033;
    font-size: clamp(1.8rem, 7vw, 3rem);
    font-weight: 900;
    box-shadow: inset 0 -8px 0 rgba(202, 138, 4, 0.11), 0 12px 24px rgba(202, 138, 4, 0.12);
}

.mg-answer-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
}

.mg-answer-row input {
    min-width: 0;
    min-height: 46px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 10px 12px;
    font: inherit;
    font-weight: 800;
}

.mg-status-row {
    display: grid;
    gap: 6px;
    min-height: 64px;
    margin-top: 14px;
}

.mg-status {
    margin: 0;
    color: #172033;
    font-size: 1.05rem;
    font-weight: 900;
}

.mg-thought {
    margin: 0;
    color: #64748b;
    font-size: 0.95rem;
    font-weight: 800;
}

.mg-partial-state {
    display: grid;
    gap: 8px;
}

.mg-partial-piles {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.mg-partial-piles span {
    border-radius: 8px;
    padding: 5px 8px;
    background: #f1f5f9;
    font-weight: 800;
}

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

@media (max-width: 720px) {
    .mg-game-grid,
    .mg-lobby-stage,
    .mg-piles {
        grid-template-columns: 1fr;
    }

    .mg-play-head {
        align-items: flex-start;
        justify-content: flex-start;
    }

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

    .mg-game-card {
        min-height: 320px;
    }

    .mg-answer-row {
        grid-template-columns: 1fr;
    }
}

.mg-shell {
    background-color: #f6fbff;
    background-image:
        linear-gradient(rgba(103, 58, 183, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(45, 212, 191, 0.04) 1px, transparent 1px);
    background-size: 28px 28px;
}

.mg-shell--landing .mg-wrap {
    width: min(1040px, 100%);
}

.mg-page-head,
.mg-play-head {
    position: relative;
}

.mg-page-head h1,
.mg-play-head h1 {
    color: #111827;
    letter-spacing: 0;
}

.mg-kicker {
    border-color: #c4b5fd;
    background: #f5f3ff;
    box-shadow: 0 6px 16px rgba(103, 58, 183, 0.08);
}

.mg-goal-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    border: 1px solid #fde68a;
    border-radius: 999px;
    padding: 8px 14px;
    background: #fef9c3;
    color: #854d0e;
    font-weight: 900;
    white-space: nowrap;
    box-shadow: 0 8px 18px rgba(202, 138, 4, 0.12);
}

.mg-back {
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.06);
    transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.mg-back:hover {
    border-color: #a78bfa;
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(103, 58, 183, 0.12);
}

.mg-game-card {
    position: relative;
    overflow: hidden;
    border-color: #cbd5e1;
    background:
        radial-gradient(circle at 18px 18px, rgba(255, 255, 255, 0.95), transparent 34px),
        #ffffff;
    box-shadow: 0 16px 36px rgba(15, 23, 42, 0.1);
    transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.mg-game-card::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    height: 7px;
    background: linear-gradient(90deg, #673ab7, #2dd4bf, #facc15);
}

.mg-game-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 22px 46px rgba(15, 23, 42, 0.14);
}

.mg-card-icon {
    box-shadow: inset 0 -5px 0 rgba(69, 39, 160, 0.12);
}

.mg-game-card--nim .mg-card-icon {
    background: #dcfce7;
    color: #166534;
}

.mg-game-card--nim .mg-card-label {
    border: 1px solid #bbf7d0;
    background: #dcfce7;
    color: #166534;
}

.mg-game-card--tf .mg-card-icon {
    background: #fef3c7;
    color: #92400e;
}

.mg-game-card--tf .mg-card-label {
    border: 1px solid #fde68a;
    background: #fef3c7;
    color: #92400e;
}

.mg-game-card--nim:hover {
    border-color: #86efac;
}

.mg-game-card--tf:hover {
    border-color: #fde68a;
}

.mg-board-panel {
    position: relative;
    overflow: hidden;
    border-color: #cbd5e1;
    background: #fffdf7;
    box-shadow: 0 18px 42px rgba(15, 23, 42, 0.12);
}

.mg-board-panel::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    height: 8px;
    background: linear-gradient(90deg, #673ab7, #22c55e, #facc15, #38bdf8);
}

.mg-board-panel--nim {
    background: #f8fffb;
}

.mg-board-panel--twenty-four {
    background: #fffdf4;
}

.mg-board-intro {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    align-items: center;
    margin-bottom: 14px;
    border: 1px solid rgba(203, 213, 225, 0.8);
    border-radius: 8px;
    padding: 14px;
    background: rgba(255, 255, 255, 0.72);
}

.mg-board-intro div:first-child {
    display: grid;
    gap: 4px;
}

.mg-board-intro strong {
    color: #172033;
    font-size: clamp(1.15rem, 3vw, 1.45rem);
    font-weight: 900;
}

.mg-board-intro > div:first-child span {
    color: #64748b;
    font-weight: 800;
}

.mg-toolbar {
    position: relative;
    z-index: 1;
    padding: 10px;
    border: 1px solid rgba(203, 213, 225, 0.72);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.66);
}

.mg-primary,
.mg-secondary,
.mg-take {
    box-shadow: 0 8px 0 rgba(15, 23, 42, 0.08);
    transition: transform 130ms ease, box-shadow 130ms ease, border-color 130ms ease, background-color 130ms ease;
}

.mg-primary:hover:not(:disabled),
.mg-secondary:hover:not(:disabled),
.mg-take:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 11px 18px rgba(15, 23, 42, 0.12);
}

.mg-primary:active:not(:disabled),
.mg-secondary:active:not(:disabled),
.mg-take:active:not(:disabled) {
    transform: translateY(1px);
    box-shadow: 0 4px 0 rgba(15, 23, 42, 0.08);
}

.mg-secondary {
    background: #f0fdfa;
    color: #0f766e;
    border-color: #99f6e4;
}

.mg-radio {
    background: #ffffff;
    box-shadow: 0 6px 14px rgba(15, 23, 42, 0.05);
}

.mg-radio:has(input:checked) {
    border-color: #a78bfa;
    background: #f5f3ff;
    color: #4527a0;
}

.mg-piles {
    position: relative;
    z-index: 1;
}

.mg-piles:empty,
.mg-number-row:empty {
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px dashed #cbd5e1;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.58);
}

.mg-piles:empty::before {
    content: "AI와 시작";
    color: #4527a0;
    font-size: 1.2rem;
    font-weight: 900;
}

.mg-number-row:empty::before {
    content: "카드 받기";
    color: #92400e;
    font-size: 1.2rem;
    font-weight: 900;
}

.mg-pile {
    position: relative;
    overflow: hidden;
    border-color: #bbf7d0;
    background: #ecfdf5;
    box-shadow: inset 0 -6px 0 rgba(22, 101, 52, 0.07), 0 12px 24px rgba(15, 23, 42, 0.07);
    transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

.mg-pile.is-selected {
    transform: scale(0.985);
    border-color: #22c55e;
}

.mg-pile.is-ai-move {
    border-color: #a78bfa;
    background: #f5f3ff;
    box-shadow: inset 0 -6px 0 rgba(103, 58, 183, 0.08), 0 16px 30px rgba(103, 58, 183, 0.16);
}

.mg-stones {
    align-content: center;
}

.mg-stone {
    border-color: #047857;
    background: #86efac;
    box-shadow: inset -4px -5px 0 rgba(4, 120, 87, 0.18), 0 5px 9px rgba(4, 120, 87, 0.18);
}

.mg-stone:nth-child(3n+2) {
    border-color: #0e7490;
    background: #a5f3fc;
    box-shadow: inset -4px -5px 0 rgba(14, 116, 144, 0.18), 0 5px 9px rgba(14, 116, 144, 0.16);
}

.mg-stone:nth-child(3n) {
    border-color: #7c3aed;
    background: #ddd6fe;
    box-shadow: inset -4px -5px 0 rgba(124, 58, 237, 0.16), 0 5px 9px rgba(124, 58, 237, 0.14);
}

.mg-take {
    background: #f5f3ff;
    color: #4527a0;
    border-color: #ddd6fe;
}

.mg-number-row {
    position: relative;
    z-index: 1;
}

.mg-number {
    position: relative;
    overflow: hidden;
    border-color: #fde68a;
    background: #fef9c3;
    box-shadow: inset 0 -8px 0 rgba(202, 138, 4, 0.11), 0 12px 24px rgba(202, 138, 4, 0.12);
    transform-origin: center;
}

.mg-number:disabled {
    cursor: default;
}

.mg-number::after {
    content: "";
    position: absolute;
    inset: 9px 12px auto 12px;
    height: 5px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.75);
}

.mg-number.is-pop {
    animation: mg-pop 360ms cubic-bezier(0.2, 0.9, 0.25, 1.2) both;
}

.is-success .mg-number {
    animation: mg-bounce 520ms ease both;
}

.mg-answer-row input {
    background: #ffffff;
    box-shadow: inset 0 2px 0 rgba(15, 23, 42, 0.04);
}

.mg-answer-row input:focus {
    border-color: #673ab7;
    outline: 3px solid rgba(103, 58, 183, 0.16);
}

.mg-answer-row input.is-error {
    border-color: #f97316;
    background: #fff7ed;
    animation: mg-shake 260ms ease both;
}

.mg-pad {
    display: grid;
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: 7px;
    margin-top: 10px;
}

.mg-pad button {
    min-height: 42px;
    border: 1px solid #bfdbfe;
    border-radius: 8px;
    background: #eff6ff;
    color: #1d4ed8;
    font: inherit;
    font-weight: 900;
    cursor: pointer;
    box-shadow: 0 6px 0 rgba(29, 78, 216, 0.08);
    transition: transform 130ms ease, box-shadow 130ms ease, background-color 130ms ease;
}

.mg-pad button:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 9px 14px rgba(29, 78, 216, 0.12);
}

.mg-pad button:active:not(:disabled) {
    transform: translateY(1px);
    box-shadow: 0 3px 0 rgba(29, 78, 216, 0.08);
}

.mg-pad button:disabled {
    opacity: 0.48;
    cursor: default;
}

.mg-status-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}

.mg-status,
.mg-thought {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    max-width: 100%;
    min-height: 36px;
    border-radius: 999px;
    padding: 7px 12px;
    overflow-wrap: anywhere;
}

.mg-status {
    border: 1px solid #bfdbfe;
    background: #eff6ff;
    color: #1d4ed8;
}

.mg-thought {
    border: 1px solid #99f6e4;
    background: #f0fdfa;
    color: #0f766e;
}

.mg-thought:empty {
    display: none;
}

.is-success .mg-status {
    border-color: #86efac;
    background: #dcfce7;
    color: #166534;
}

.is-error .mg-status {
    border-color: #fed7aa;
    background: #fff7ed;
    color: #c2410c;
}

.is-hint .mg-thought {
    border-color: #fde68a;
    background: #fef9c3;
    color: #854d0e;
    animation: mg-pulse 520ms ease both;
}

.mg-secondary.is-pop,
.mg-thought.is-pop {
    animation: mg-pulse 520ms ease both;
}

.is-ai-move .mg-thought {
    border-color: #c4b5fd;
    background: #f5f3ff;
    color: #4527a0;
}

.mg-burst {
    position: absolute;
    inset: 0;
    z-index: 2;
    pointer-events: none;
    overflow: hidden;
}

.mg-burst span {
    position: absolute;
    left: var(--x);
    top: var(--y);
    color: var(--c);
    font-size: 1.15rem;
    font-weight: 900;
    animation: mg-spark 680ms ease-out both;
}

body.mg-modal-open {
    overflow: hidden;
}

.mg-help-modal {
    position: fixed;
    top: var(--main-nav-height, 88px);
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 80;
    display: grid;
    place-items: center;
    padding: 20px;
}

.mg-help-modal[hidden] {
    display: none;
}

.mg-help-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.42);
    backdrop-filter: blur(6px);
}

.mg-help-card {
    position: relative;
    z-index: 1;
    width: min(640px, 100%);
    max-height: calc(100dvh - var(--main-nav-height, 88px) - 40px);
    overflow: auto;
    border: 1px solid #d7dce5;
    border-radius: 8px;
    padding: 22px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.98)),
        #ffffff;
    box-shadow: 0 28px 70px rgba(15, 23, 42, 0.28);
    outline: none;
    transform-origin: center;
}

.mg-help-modal.is-open .mg-help-card {
    animation: mg-modal-in 220ms ease both;
}

.mg-help-modal.is-closing .mg-help-card {
    animation: mg-modal-out 170ms ease both;
}

.mg-help-close {
    position: absolute;
    top: 14px;
    right: 14px;
    min-height: 36px;
    border: 1px solid #d7dce5;
    border-radius: 8px;
    padding: 7px 10px;
    background: #ffffff;
    color: #334155;
    font: inherit;
    font-weight: 900;
    cursor: pointer;
}

.mg-help-card h2 {
    margin: 10px 44px 14px 0;
    color: #111827;
    font-size: clamp(1.7rem, 5vw, 2.4rem);
    line-height: 1.08;
    font-weight: 900;
    letter-spacing: 0;
}

.mg-help-visual {
    display: grid;
    gap: 10px;
    min-height: 132px;
    margin: 0 0 16px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    padding: 14px;
    background: #f8fafc;
    overflow: hidden;
}

.mg-help-visual--nim {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: end;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.76), rgba(220, 252, 231, 0.74)),
        #ecfdf5;
}

.mg-help-visual--nim div {
    display: flex;
    flex-wrap: wrap-reverse;
    align-content: flex-start;
    justify-content: center;
    gap: 6px;
    min-height: 86px;
    border: 1px solid #bbf7d0;
    border-radius: 8px;
    padding: 10px;
    background: #f0fdf4;
}

.mg-help-visual--nim span {
    width: 24px;
    height: 24px;
    border: 2px solid #047857;
    border-radius: 50%;
    background: #86efac;
    box-shadow: inset -4px -5px 0 rgba(4, 120, 87, 0.16), 0 7px 12px rgba(4, 120, 87, 0.14);
    animation: mg-help-float 1200ms ease-in-out infinite;
}

.mg-help-visual--nim div:nth-child(2) span {
    border-color: #0e7490;
    background: #a5f3fc;
    animation-delay: 90ms;
}

.mg-help-visual--nim div:nth-child(3) span {
    border-color: #7c3aed;
    background: #ddd6fe;
    animation-delay: 160ms;
}

.mg-help-visual--tf {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-content: center;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(254, 249, 195, 0.74)),
        #fffbeb;
}

.mg-help-visual--tf span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 74px;
    border: 1px solid #fde68a;
    border-radius: 8px;
    background: #fef3c7;
    color: #172033;
    font-size: 2rem;
    font-weight: 900;
    box-shadow: inset 0 -7px 0 rgba(202, 138, 4, 0.1), 0 12px 22px rgba(202, 138, 4, 0.12);
    animation: mg-pop 420ms cubic-bezier(0.2, 0.9, 0.25, 1.2) both;
}

.mg-help-visual--tf span:nth-child(2) {
    animation-delay: 60ms;
}

.mg-help-visual--tf span:nth-child(3) {
    animation-delay: 120ms;
}

.mg-help-visual--tf span:nth-child(4) {
    animation-delay: 180ms;
}

.mg-help-visual--tf b {
    grid-column: 1 / -1;
    min-height: 34px;
    border: 1px solid #bfdbfe;
    border-radius: 8px;
    background: #eff6ff;
    color: #1d4ed8;
    text-align: center;
    line-height: 34px;
}

.mg-help-steps {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: mg-step;
}

.mg-help-steps li {
    counter-increment: mg-step;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 3px 10px;
    align-items: center;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 11px;
    background: #ffffff;
}

.mg-help-steps li::before {
    content: counter(mg-step);
    grid-row: span 2;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: #e6e6fa;
    color: #4527a0;
    font-weight: 900;
}

.mg-help-steps strong {
    color: #172033;
    font-weight: 900;
}

.mg-help-steps span {
    color: #64748b;
    font-weight: 800;
}

.mg-help-tip {
    margin: 14px 0;
    border: 1px solid #fde68a;
    border-radius: 8px;
    padding: 10px 12px;
    background: #fef9c3;
    color: #854d0e;
    font-weight: 900;
}

@keyframes mg-pop {
    0% {
        opacity: 0;
        transform: translateY(12px) scale(0.88);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes mg-bounce {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    40% {
        transform: translateY(-8px) scale(1.03);
    }
}

@keyframes mg-shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-6px);
    }
    75% {
        transform: translateX(6px);
    }
}

@keyframes mg-pulse {
    0% {
        transform: scale(1);
    }
    45% {
        transform: scale(1.04);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes mg-spark {
    0% {
        opacity: 0;
        transform: translate(-50%, 10px) scale(0.7);
    }
    20% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -36px) scale(1.25);
    }
}

@keyframes mg-modal-in {
    0% {
        opacity: 0;
        transform: translateY(18px) scale(0.96);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes mg-modal-out {
    0% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    100% {
        opacity: 0;
        transform: translateY(12px) scale(0.98);
    }
}

@keyframes mg-help-float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}

@media (max-width: 720px) {
    .mg-play-head {
        display: grid;
        grid-template-columns: auto 1fr;
    }

    .mg-goal-badge {
        grid-column: 1 / -1;
        justify-self: start;
    }

    .mg-board-panel {
        padding: 14px;
    }

    .mg-board-intro {
        grid-template-columns: 1fr;
    }

    .mg-toolbar {
        display: grid;
        grid-template-columns: 1fr;
    }

    .mg-toolbar .mg-primary,
    .mg-toolbar .mg-secondary {
        width: 100%;
    }

    .mg-status,
    .mg-thought {
        width: 100%;
    }

    .mg-pad {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .mg-help-modal {
        align-items: end;
        padding: 12px;
    }

    .mg-help-card {
        max-height: calc(100dvh - var(--main-nav-height, 88px) - 24px);
        padding: 18px;
    }

    .mg-help-visual--nim,
    .mg-help-visual--tf {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .mg-help-visual--tf b {
        grid-column: 1 / -1;
    }
}

@media (prefers-reduced-motion: reduce) {
    .mg-back,
    .mg-game-card,
    .mg-primary,
    .mg-secondary,
    .mg-take,
    .mg-pile,
    .mg-number,
    .mg-pad button {
        transition: none;
    }

    .mg-number.is-pop,
    .is-success .mg-number,
    .mg-answer-row input.is-error,
    .is-hint .mg-thought,
    .mg-secondary.is-pop,
    .mg-thought.is-pop,
    .mg-burst span,
    .mg-help-modal.is-open .mg-help-card,
    .mg-help-modal.is-closing .mg-help-card,
    .mg-help-visual--nim span,
    .mg-help-visual--tf span {
        animation: none;
    }
}