#app {
    max-width: 1120px;
    min-height: 100vh;
    min-height: 100dvh;
    margin: 0 auto;
    padding: clamp(12px, 2.6vw, 22px);
    display: flex;
    flex-direction: column;
}


.hidden { display: none !important; }
.accent-text { color: var(--primary-green); }

.quiz-container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

#setup-screen {
    width: 100%;
    min-height: calc(100vh - 44px);
    min-height: calc(100dvh - 44px);
}

#setup-screen > .page-backbar,
#setup-screen > .page-intro,
#setup-screen > .dashboard-grid {
    width: 100%;
}

.setup-card,
.overview-card,
.history-mini,
.challenge-card,
.finish-card,
.progress-capsule,
.back-btn,
.question-box,
.answer-slot,
.key,
.sound-control,
.page-intro {
    border-radius: 28px;
}

.dashboard-grid { grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr); }

.setup-card,
.overview-card,
.history-mini,
.finish-card {
    padding: clamp(16px, 2.6vw, 22px);
}

.section-heading { position: relative; z-index: 1; margin-bottom: 20px; }

.setup-card h1,
.setup-subtitle { display: none; }

.type-options {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin: 0 0 14px;
}

.settings-grid,
.metric-grid,
.danger-actions {
    display: grid;
    gap: 12px;
}

.settings-group {
    display: grid;
    gap: 10px;
    margin-top: 14px;
}

.settings-group:first-of-type {
    margin-top: 0;
}

.settings-grid,
.metric-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.danger-actions { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }

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

.launch-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
    margin-top: 16px;
}

#resume-btn {
    width: auto;
    padding-left: 18px;
    padding-right: 18px;
    white-space: nowrap;
    background: var(--accent);
    color: #10192A;
    box-shadow: 0 0 32px rgba(126,182,255,.18), 0 18px 34px rgba(0,0,0,.30);
}

#resume-btn:hover {
    box-shadow: 0 0 22px rgba(126,182,255,.16), 0 14px 28px rgba(0,0,0,.24);
}

.history-mini {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1;
}

#quiz-screen,
#finish-screen {
    width: 100%;
    flex: 1;
    justify-content: center;
    padding-bottom: 22px;
}

.quiz-header {
    width: 100%;
    max-width: 640px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 22px;
}

.question-box {
    width: 100%;
    max-width: 640px;
    min-height: clamp(132px, 24vh, 168px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 22px;
    border: 1px solid var(--line);
    background: rgba(255,255,255,.06);
    font-size: clamp(52px, 10vw, 104px);
    font-weight: 900;
    letter-spacing: -.04em;
}

.answer-slot {
    position: relative;
    width: 100%;
    min-height: clamp(74px, 14vh, 90px);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 18px 0 24px;
    border: 1px solid rgba(119,224,182,.34);
    background: rgba(119,224,182,.08);
    color: var(--primary-green);
    font-size: clamp(38px, 8vw, 72px);
    font-weight: 900;
    box-shadow: 0 0 24px rgba(119,224,182,.12);
}

.answer-row {
    width: 100%;
    max-width: 480px;
    margin: 18px 0 24px;
}

.answer-row .answer-slot {
    margin: 0;
}

.answer-value {
    width: 100%;
    padding: 0 58px;
    text-align: center;
}

.answer-backspace {
    position: absolute;
    right: 36px;
    top: 50%;
    transform: translateY(-50%);
    width: 42px;
    min-height: 42px;
    padding: 0;
    border: 0;
    background: transparent url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 44 32'%3E%3Cpath d='M2 16 13 5h27v22H13L2 16Z' fill='white'/%3E%3Cpath d='m22 11 9 10M31 11 22 21' fill='none' stroke='%230B1020' stroke-width='3.2' stroke-linecap='round'/%3E%3C/svg%3E") center / 34px 25px no-repeat;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
}

.answer-backspace:hover {
    opacity: .92;
}

.answer-backspace:active {
    transform: translateY(calc(-50% + 1px));
}

.keypad-area {
    width: 100%;
    max-width: 480px;
}

.keypad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.key {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: clamp(66px, 10vh, 78px);
    border: 1px solid var(--line);
    background: var(--key-bg);
    color: var(--text-main);
    font-size: 30px;
    font-weight: 900;
    cursor: pointer;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.11), 0 10px 24px rgba(0, 0, 0, 0.24);
}

.key:hover {
    border-color: rgba(119,224,182,.32);
    background: rgba(255,255,255,.145);
}

.key:active,
.btn-main:active,
.danger-btn:active,
.back-btn:active { transform: translateY(2px); }

.key.func { font-size: 18px; color: var(--text-muted); background: rgba(255,255,255,0.065); }
.key.del-back { color: var(--soft-red); }
.key[data-key="0"] { grid-column: 2; }
.key.ok {
    grid-column: 1 / -1;
    min-height: clamp(72px, 11vh, 82px);
    background: var(--primary-green);
    color: #102019;
    font-size: 24px;
    box-shadow: 0 0 24px rgba(119,224,182,.2), 0 12px 28px rgba(0, 0, 0, 0.28);
}

.finish-card { text-align: center; max-width: 560px; width: 100%; }
.finish-icon { font-size: 80px; margin-bottom: 16px; }
.finish-card h1 { margin: 0 0 10px; font-size: 38px; color: var(--primary-green); letter-spacing: -.05em; display: block; }
.summary-info { line-height: 1.7; color: var(--text-main); margin-bottom: 18px; }

.challenge-modal { z-index: 20; }
.toast-tip { z-index: 30; }

.shake { color: var(--soft-red) !important; }

@media (max-width: 860px) {
    #setup-screen { min-height: auto; }
    .dashboard-grid { grid-template-columns: 1fr; }
    .add-sub-settings-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .launch-row { grid-template-columns: 1fr; }
    #resume-btn { width: 100%; }
}

@media (orientation: landscape) and (max-height: 560px) and (max-width: 920px) {
    .dashboard-grid { grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr); }
}

@media (orientation: landscape) {
    #setup-screen {
        transform: scale(.82);
        transform-origin: top center;
    }

    #quiz-screen {
        justify-content: flex-start;
        transform: scale(.72);
        transform-origin: top center;
    }
}

@media (max-width: 560px) {
    #app { padding: 12px; }
    .setup-card,
    .overview-card,
    .history-mini,
    .finish-card,
    .question-box,
    .page-intro { padding: 16px; }
    .page-intro { padding: 14px 16px; }
    .section-heading { margin-bottom: 14px; }
    .card-copy { display: none; }
    .section-label { margin-bottom: 8px; }
    .type-options { grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 12px; }
    .type-options span { padding: 10px 4px; font-size: 13px; border-radius: 14px; }
    .settings-grid,
    .metric-grid,
    .danger-actions { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
    .launch-row { grid-template-columns: minmax(0, 1fr) auto; }
    #resume-btn { width: auto; padding-left: 14px; padding-right: 14px; }
    .field-card,
    .metric-card { min-height: 70px; padding: 10px 12px; border-radius: 16px; }
    .field-card span,
    .metric-card span { margin-bottom: 6px; font-size: 11px; }
    .field-card strong,
    .metric-card b { font-size: 18px; }
    .field-card input[type="number"] { width: 62px; font-size: 16px; padding: 6px 2px; }
    .add-sub-settings-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .btn-main { padding: 14px; font-size: 17px; }
    .danger-btn { padding: 10px 8px; font-size: 12px; }
    .quiz-header { flex-direction: column; align-items: stretch; }
    .progress-capsule { flex-wrap: wrap; justify-content: center; }
    .question-box { min-height: 132px; font-size: clamp(42px, 14vw, 74px); }
    .answer-row { margin: 14px 0 18px; }
    .answer-slot { min-height: 74px; }
    .answer-value { padding: 0 52px; }
    .key { min-height: 68px; font-size: 26px; }
    .key.ok { min-height: 74px; }
}

#practice-settings .add-sub-settings-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
}

@media (orientation: landscape) and (max-height: 560px) {
    #app {
        min-height: 100dvh;
        padding: 10px;
    }

    #setup-screen {
        min-height: 0;
        flex: 1;
        gap: 8px;
    }

    .page-backbar { gap: 8px; }
    .page-intro { padding: 8px 12px; }

    .dashboard-grid {
        flex: 1;
        min-height: 0;
        height: auto;
        align-items: stretch;
    }

    .dashboard-main,
    .dashboard-side {
        min-height: 0;
    }

    .dashboard-side {
        overflow: hidden;
    }

    .console-kicker,
    .section-eyebrow { margin-bottom: 6px; font-size: 10px; }
    .page-title { font-size: clamp(22px, 3vw, 28px); }
    .card-title { font-size: clamp(20px, 2.8vw, 26px); }
    .card-copy { display: none; }

    .setup-card,
    .overview-card,
    .history-mini,
    .finish-card { padding: 10px; }

    .setup-card,
    .history-mini { overflow: auto; }

    .section-heading { margin-bottom: 8px; }
    .section-label { margin-bottom: 6px; font-size: 12px; }
    .panel-title { margin-bottom: 8px; }
    .type-options { gap: 6px; margin-bottom: 8px; }
    .type-options span { padding: 7px 4px; font-size: 12px; border-radius: 14px; }

    .settings-grid,
    .metric-grid,
    .danger-actions { gap: 6px; }

    .field-card,
    .metric-card { min-height: 52px; padding: 7px 9px; border-radius: 14px; }

    .field-card span,
    .metric-card span { margin-bottom: 4px; font-size: 10px; }

    .field-card strong,
    .metric-card b { font-size: 16px; }
    .field-card input[type="number"] { width: 54px; padding: 4px 2px; font-size: 14px; }
    .launch-row { margin-top: 8px; gap: 6px; }
    .btn-main { padding: 10px; font-size: 15px; }
    #resume-btn { padding-left: 12px; padding-right: 12px; }
    .history-mini { gap: 6px; }
    .history-row { padding: 7px 0; }
    .danger-btn { padding: 7px 6px; font-size: 11px; }
    #quiz-screen { justify-content: flex-start; padding-bottom: 12px; }
    .quiz-header { margin-bottom: 12px; }
    .question-box { min-height: 104px; font-size: clamp(42px, 9vw, 72px); }
    .answer-row { margin: 10px 0 12px; }
    .answer-slot { min-height: 58px; font-size: clamp(32px, 7vw, 54px); }
    .answer-value { padding: 0 48px; }
    .keypad { gap: 8px; }
    .key { min-height: 52px; font-size: 24px; }
    .key.func { font-size: 16px; }
    .key.ok { min-height: 58px; font-size: 20px; }
}

#practice-settings .add-sub-settings-grid .field-card {
    min-height: auto;
    display: grid;
    align-content: start;
    gap: 8px;
    padding: 12px 14px;
}

#practice-settings .add-sub-settings-grid .field-card > span {
    display: block;
    margin-bottom: 0;
    font-size: 13px;
}

#practice-settings .add-sub-settings-grid .field-card > span::after {
    content: "";
}

#practice-settings .add-sub-settings-grid .field-card > strong {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 4px;
    min-width: 0;
    font-size: 20px;
    white-space: normal;
}

#practice-settings .add-sub-settings-grid .field-card strong.option-group {
    align-items: stretch;
    gap: 8px;
    flex-wrap: wrap;
    white-space: normal;
}

#practice-settings .add-sub-settings-grid .field-card strong.option-group label {
    flex: 1 1 0;
}

#practice-settings .add-sub-settings-grid .field-card strong.option-group span {
    padding: 10px 8px;
    font-size: 14px;
    border-radius: 14px;
}

#practice-settings .settings-grid:not(.add-sub-settings-grid) .field-card {
    min-height: auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 12px 14px;
}

#practice-settings .settings-grid:not(.add-sub-settings-grid) .field-card > span {
    display: inline;
    margin-bottom: 0;
    font-size: 13px;
}

#practice-settings .settings-grid:not(.add-sub-settings-grid) .field-card > span::after {
    content: "：";
}

#practice-settings .settings-grid:not(.add-sub-settings-grid) .field-card > strong {
    display: inline-flex;
    align-items: baseline;
    justify-content: flex-end;
    gap: 4px;
    min-width: 0;
    font-size: 20px;
    white-space: nowrap;
}