:root {
    color-scheme: dark;
    --bg: #292f36;
    --panel: #303740;
    --panel-deep: #252b32;
    --panel-soft: #353e47;
    --line: rgba(174, 192, 209, 0.2);
    --line-strong: rgba(174, 195, 214, 0.34);
    --text: #eef3f7;
    --muted: #aeb9c4;
    --faint: #7f8c98;
    --sky: #9ec6ed;
    --mint: #8fdab9;
    --gold: #e7c37e;
    --rose: #e79b9f;
    --lilac: #c5b2e4;
    --aqua: #8ed5dc;
    --radius: 8px;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    letter-spacing: 0;
}

button, input, textarea { font: inherit; }

button, a { -webkit-tap-highlight-color: transparent; }

button { color: inherit; }

svg {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.75;
    stroke-linecap: round;
    stroke-linejoin: round;
}

[hidden] { display: none !important; }

.revision-shell {
    width: min(1500px, 100%);
    min-height: 100dvh;
    margin: 0 auto;
    padding: 18px clamp(14px, 2.4vw, 34px) 30px;
}

.revision-topbar,
.revision-toolbar {
    display: flex;
    align-items: center;
}

.revision-topbar {
    min-height: 56px;
    gap: 10px;
}

.revision-title-mark {
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    color: var(--gold);
    border-left: 1px solid rgba(231, 195, 126, 0.45);
}

.revision-title-mark svg { width: 24px; height: 24px; }

.icon-button,
.card-tool,
.nav-button,
.grade-button,
.mode-button,
.filter-reveal {
    display: inline-grid;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: rgba(37, 43, 50, 0.78);
    color: var(--muted);
    cursor: pointer;
    transition: color 150ms ease, border-color 150ms ease, background 150ms ease, transform 150ms ease;
}

.icon-button:hover,
.card-tool:hover,
.nav-button:hover,
.grade-button:hover,
.mode-button:hover,
.filter-reveal:hover {
    color: var(--text);
    border-color: var(--line-strong);
    background: #38414a;
    transform: translateY(-1px);
}

.icon-button:focus-visible,
.card-tool:focus-visible,
.nav-button:focus-visible,
.grade-button:focus-visible,
.mode-button:focus-visible,
.filter-chip:focus-visible,
.quiz-card:focus-visible,
.open-drawing:focus-visible,
.dialog-tabs button:focus-visible,
.source-row:focus-visible {
    outline: 2px solid rgba(158, 198, 237, 0.9);
    outline-offset: 2px;
}

.icon-button { width: 44px; height: 44px; text-decoration: none; }

.home-button { margin-right: auto; }

.daily-counter {
    position: relative;
    display: flex;
    align-items: center;
    width: 48px;
    height: 44px;
    margin-left: auto;
    padding: 5px 8px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: rgba(37, 43, 50, 0.82);
    color: var(--muted);
    cursor: pointer;
    transition: width 240ms cubic-bezier(.2,.75,.2,1), border-color 160ms ease, background 160ms ease;
}

.daily-counter:hover,
.daily-counter:focus-visible,
.daily-counter:focus-within {
    width: 176px;
    border-color: rgba(143, 218, 185, 0.48);
    background: #323b43;
}

.daily-counter:focus-visible { outline: 2px solid rgba(158, 198, 237, 0.8); outline-offset: 2px; }

.daily-orbit {
    position: relative;
    flex: 0 0 29px;
    width: 29px;
    height: 29px;
    border: 2px solid rgba(222, 232, 240, 0.5);
    border-radius: 50%;
}

.daily-orbit::before,
.daily-orbit::after {
    content: "";
    position: absolute;
    inset: 5px;
    border: 1px solid rgba(158, 198, 237, 0.52);
    transform: rotate(45deg);
}

.daily-orbit::after {
    inset: 9px;
    border: 0;
    border-radius: 50%;
    background: var(--text);
}

.daily-orbit i {
    position: absolute;
    top: -3px;
    left: 50%;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--sky);
    transform: translateX(-50%);
}

.daily-counter.is-loading .daily-orbit {
    border-color: rgba(222, 232, 240, 0.18);
    border-top-color: var(--text);
    border-right-color: var(--sky);
    animation: spin 760ms linear infinite;
}

.daily-counter.is-complete .daily-orbit {
    border-color: var(--mint);
    box-shadow: 0 0 10px rgba(143, 218, 185, 0.16);
}

.daily-copy {
    display: grid;
    flex: 0 0 94px;
    min-width: 94px;
    margin-left: 10px;
    text-align: left;
    opacity: 0;
    transform: translateX(-4px);
    transition: opacity 150ms ease 35ms, transform 170ms ease 35ms;
}

.daily-counter:hover .daily-copy,
.daily-counter:focus-visible .daily-copy,
.daily-counter:focus-within .daily-copy { opacity: 1; transform: translateX(0); }

.daily-copy small { color: var(--faint); font-size: 0.65rem; line-height: 1; text-transform: uppercase; }
.daily-copy strong { font-size: 0.88rem; line-height: 1.35; font-weight: 700; }
.daily-copy strong i { color: var(--faint); font-style: normal; font-weight: 600; }
.daily-track { width: 92px; height: 2px; overflow: hidden; border-radius: 2px; background: rgba(255,255,255,.11); }
.daily-track b { display: block; width: 0; height: 100%; background: var(--mint); transition: width 300ms ease; }
.daily-attempts { position: absolute; right: 8px; color: var(--faint); font-size: .68rem; opacity: 0; }
.daily-counter:hover .daily-attempts,
.daily-counter:focus-visible .daily-attempts { opacity: 1; }

.revision-toolbar {
    min-height: 66px;
    padding: 10px;
    gap: 9px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(38, 45, 52, 0.88);
}

.mode-segment {
    display: grid;
    grid-template-columns: repeat(5, 54px);
    height: 44px;
    border: 1px solid var(--line);
    border-radius: 7px;
    overflow: hidden;
}

.mode-button {
    width: 54px;
    height: 42px;
    border: 0;
    border-right: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
}

.mode-button:last-child { border-right: 0; }
.mode-button.is-active { color: #18232d; background: var(--sky); }
.mode-button[data-mode="smart"].is-active { background: var(--mint); }
.mode-button[data-mode="gaps"].is-active { background: var(--gold); }
.mode-button[data-mode="flagged"].is-active { background: var(--rose); }
.toolbar-spacer { flex: 1; }
.type-mode-button { position: relative; }
.special-study-button { color: var(--gold); border-color: rgba(231,195,126,.34); }
.special-study-button:hover { color: #f3d79f; border-color: rgba(231,195,126,.62); background: rgba(231,195,126,.09); }
.type-mode-button.is-active {
    color: #17232c;
    border-color: transparent;
    background: var(--sky);
}
.type-mode-pending {
    position: absolute;
    top: -5px;
    right: -5px;
    display: grid;
    min-width: 18px;
    height: 18px;
    padding: 0 4px;
    place-items: center;
    border: 2px solid #272e35;
    border-radius: 9px;
    background: var(--gold);
    color: #242015;
    font-size: .6rem;
    font-weight: 800;
}

.card-search { position: relative; }
.search-panel {
    position: absolute;
    z-index: 30;
    top: 0;
    right: 0;
    display: grid;
    grid-template-columns: minmax(220px, 430px);
    width: min(430px, calc(100vw - 34px));
    padding-right: 52px;
    pointer-events: none;
    opacity: 0;
    transform: translateX(10px);
    transition: opacity 150ms ease, transform 180ms ease;
}

.card-search.is-open .search-panel { pointer-events: auto; opacity: 1; transform: translateX(0); }
.card-search.is-open #toggle-search { position: relative; z-index: 31; color: var(--text); }
.search-panel input {
    width: 100%;
    height: 44px;
    padding: 0 14px;
    border: 1px solid var(--line-strong);
    border-radius: 7px;
    outline: 0;
    background: #222930;
    color: var(--text);
}

.search-panel input:focus { border-color: rgba(158, 198, 237, 0.72); }
.search-results {
    position: absolute;
    top: 50px;
    right: 52px;
    width: calc(100% - 52px);
    max-height: 360px;
    overflow: auto;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: #252c33;
    box-shadow: 0 14px 30px rgba(0,0,0,.24);
}

.search-result {
    display: grid;
    width: 100%;
    padding: 11px 13px;
    border: 0;
    border-bottom: 1px solid rgba(174,192,209,.12);
    background: transparent;
    color: var(--text);
    text-align: left;
    cursor: pointer;
}

.search-result:hover,
.search-result.is-active { background: rgba(158,198,237,.1); }
.search-result strong { overflow: hidden; font-size: .82rem; font-weight: 650; text-overflow: ellipsis; white-space: nowrap; }
.search-result small { color: var(--faint); font-size: .68rem; }

.filter-panel {
    position: relative;
    z-index: 20;
    height: 66px;
    min-height: 66px;
    margin-top: 8px;
    overflow: visible;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(38, 45, 52, 0.76);
    transition: border-color 160ms ease, background 160ms ease;
}

.filter-content {
    position: absolute;
    z-index: 1;
    top: -1px;
    right: -1px;
    left: -1px;
    display: grid;
    gap: 7px;
    padding: 10px 58px 10px 10px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    background: #272f37;
    box-shadow: 0 16px 30px rgba(12,16,20,.22);
    opacity: 1;
    visibility: visible;
    transition: opacity 160ms ease, visibility 0s linear 0s;
}

.filter-panel.is-hidden { border-color: rgba(174,192,209,.11); }
.filter-panel.is-hidden .filter-content { pointer-events: none; opacity: 0; visibility: hidden; transition-delay: 0s, 160ms; }
.filter-reveal {
    position: absolute;
    z-index: 2;
    top: 10px;
    right: 10px;
    width: 38px;
    height: 38px;
}
.filter-panel.is-hidden .filter-reveal { top: 10px; right: 10px; width: 38px; height: 38px; }
.filter-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 7px;
    overflow: visible;
}
.filter-chip {
    flex: 0 0 auto;
    min-height: 36px;
    padding: 0 14px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    transition: color 140ms ease, background 140ms ease, border-color 140ms ease;
}
.filter-chip:hover { color: var(--text); border-color: var(--line-strong); }
.filter-chip.is-active { color: #17232c; border-color: transparent; background: var(--sky); font-weight: 700; }
.filter-chip.is-priority { color: var(--gold); border-color: rgba(231,195,126,.38); }
.filter-chip.is-priority:hover { border-color: rgba(231,195,126,.65); background: rgba(231,195,126,.08); }
.filter-chip.is-priority.is-active { color: #242015; border-color: transparent; background: var(--gold); }
.filter-chip.is-amino { color: var(--lilac); border-color: rgba(193,181,226,.4); }
.filter-chip.is-amino:hover { border-color: rgba(193,181,226,.68); background: rgba(193,181,226,.09); }
.filter-chip.is-amino.is-active { color: #201c2b; border-color: transparent; background: var(--lilac); }
.filter-chip.is-special { color: var(--rose); border-color: rgba(231,155,159,.42); }
.filter-chip.is-special:hover { border-color: rgba(231,155,159,.68); background: rgba(231,155,159,.09); }
.filter-chip.is-special.is-active { color: #2a1a1d; border-color: transparent; background: var(--rose); }
.filter-chip.is-test2 { color: var(--gold); border-color: rgba(231,195,126,.42); }
.filter-chip.is-test2:hover { border-color: rgba(231,195,126,.7); background: rgba(231,195,126,.09); }
.filter-chip.is-test2.is-active { color: #292116; border-color: transparent; background: var(--gold); }
.filter-row-secondary .filter-chip.is-active { background: var(--mint); }

.quiz-progress {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px;
    min-height: 42px;
    padding: 0 4px;
}
.progress-track { height: 3px; overflow: hidden; border-radius: 4px; background: rgba(255,255,255,.1); }
.progress-track span { display: block; width: 0; height: 100%; background: var(--sky); transition: width 260ms ease; }
body.is-smart-mode .progress-track span { background: var(--mint); }
.quiz-progress strong { min-width: 78px; color: var(--muted); font-size: .78rem; text-align: right; }

.quiz-stage { animation: stage-in 260ms ease both; }
.card-frame { position: relative; }
.card-meta {
    position: absolute;
    z-index: 3;
    top: 12px;
    left: 12px;
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    max-width: calc(100% - 124px);
    gap: 6px;
    overflow: visible;
}
.meta-pill {
    flex: 0 0 auto;
    min-height: 28px;
    padding: 5px 9px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(37,43,50,.82);
    color: var(--muted);
    font-size: .69rem;
    font-weight: 700;
}
.meta-pill.is-scope[data-scope="Explicit"] { color: var(--rose); border-color: rgba(231,155,159,.42); }
.meta-pill.is-scope[data-scope="Confirmed"] { color: var(--gold); border-color: rgba(231,195,126,.44); }
.card-tools { position: absolute; z-index: 4; top: 10px; right: 10px; display: flex; gap: 7px; }
.card-tool { width: 40px; height: 40px; }
.card-tool.is-active { color: var(--rose); border-color: rgba(231,155,159,.46); background: rgba(231,155,159,.1); }

.quiz-card {
    position: relative;
    display: grid;
    align-content: center;
    justify-items: center;
    width: 100%;
    min-height: clamp(440px, 61dvh, 720px);
    padding: 72px clamp(24px, 5vw, 78px) 42px;
    overflow: hidden;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    background: var(--panel);
    box-shadow: 0 18px 38px rgba(14,18,22,.16);
    cursor: pointer;
    transition: border-color 170ms ease, background 180ms ease, transform 180ms ease;
}
.quiz-card:hover { border-color: rgba(184,205,223,.5); background: #323a43; }
.quiz-card.is-answer { overflow-y: auto; background: #303840; }
.quiz-card.is-switching .card-copy,
.quiz-card.is-switching .card-diagram { animation: card-copy-in 260ms cubic-bezier(.2,.72,.25,1) both; }
.quiz-card.is-known { border-color: rgba(143,218,185,.56); }
.quiz-card.is-missed { border-color: rgba(231,155,159,.54); }
.side-label { position: absolute; bottom: 16px; left: 18px; color: var(--faint); font-size: .67rem; text-transform: uppercase; }
.mastery-mark { position: absolute; right: 18px; bottom: 14px; color: var(--mint); }
.mastery-mark svg { width: 24px; height: 24px; }

.card-copy {
    width: min(1080px, 100%);
    color: var(--text);
    font-size: clamp(1.4rem, 2.45vw, 2.35rem);
    line-height: 1.38;
    text-align: center;
}
.card-copy.is-answer-copy { font-size: clamp(1rem, 1.5vw, 1.3rem); line-height: 1.55; text-align: left; }
.card-copy p { margin: 0; }
.answer-sections { display: grid; width: min(1040px, 100%); gap: 12px; }
.answer-section {
    position: relative;
    padding: 13px 16px 13px 20px;
    border: 1px solid rgba(174,192,209,.13);
    border-radius: 6px;
    background: rgba(36,42,49,.48);
}
.answer-section::before { content: ""; position: absolute; top: 10px; bottom: 10px; left: 0; width: 3px; border-radius: 0 3px 3px 0; background: var(--sky); }
.answer-section[data-tone="mint"]::before { background: var(--mint); }
.answer-section[data-tone="gold"]::before { background: var(--gold); }
.answer-section[data-tone="rose"]::before { background: var(--rose); }
.answer-section[data-tone="lilac"]::before { background: var(--lilac); }
.answer-section[data-tone="aqua"]::before { background: var(--aqua); }
.answer-section h3 { margin: 0 0 4px; color: var(--muted); font-size: .72rem; font-weight: 700; text-transform: uppercase; }
.answer-section p { margin: 0; font-size: 1em; font-weight: 430; }

.study-term { position: relative; color: var(--sky); font-style: normal; text-decoration: underline; text-decoration-color: rgba(158,198,237,.35); text-underline-offset: .15em; cursor: help; }
.study-term[data-tone="mint"] { color: var(--mint); text-decoration-color: rgba(143,218,185,.35); }
.study-term[data-tone="gold"] { color: var(--gold); text-decoration-color: rgba(231,195,126,.36); }
.study-term[data-tone="rose"] { color: var(--rose); text-decoration-color: rgba(231,155,159,.36); }
.study-term[data-tone="lilac"] { color: var(--lilac); text-decoration-color: rgba(197,178,228,.36); }

.card-diagram {
    width: min(940px, 100%);
    min-height: 220px;
    max-height: min(45dvh, 440px);
    margin-top: 22px;
    padding: 12px;
    border-top: 1px solid rgba(174,192,209,.14);
}
.card-diagram svg { display: block; width: 100%; height: min(39dvh, 390px); }
.diagram-label { display: block; margin-top: -4px; color: var(--muted); font-size: .72rem; text-align: center; }
.card-diagram.has-compound-images {
    width: min(1120px, 100%);
    min-height: 0;
    max-height: none;
    padding: 0;
}
.compound-image-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 10px; }
.compound-image-grid.is-single { width: min(760px, 100%); margin-inline: auto; }
.compound-image {
    display: grid;
    grid-template-rows: minmax(180px, 30dvh) auto;
    min-width: 0;
    margin: 0;
    overflow: hidden;
    border: 1px solid rgba(174,192,209,.24);
    border-radius: 7px;
    background: #f4f5f6;
}
.compound-image img { display: block; width: 100%; height: 100%; min-height: 0; object-fit: contain; }
.compound-image figcaption {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 38px;
    padding: 7px 10px;
    gap: 10px;
    border-top: 1px solid rgba(47,58,68,.16);
    background: #e9edf0;
    color: #2d3740;
    font-size: .7rem;
}
.compound-image figcaption strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.compound-image figcaption a { flex: 0 0 auto; color: #426f99; text-decoration: none; }
.compound-image figcaption a:hover { text-decoration: underline; }
.open-drawing {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 154px;
    height: 52px;
    margin-top: 28px;
    padding: 0 22px;
    gap: 10px;
    border: 1px solid rgba(231,195,126,.42);
    border-radius: 7px;
    background: rgba(231,195,126,.11);
    color: var(--gold);
    font-weight: 750;
    cursor: pointer;
    transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}
.open-drawing:hover { transform: translateY(-2px); background: rgba(231,195,126,.17); border-color: rgba(231,195,126,.68); }

.typed-answer-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 52px;
    width: min(980px, calc(100% - 24px));
    margin: 12px auto 0;
    gap: 8px;
}
.typed-answer-panel textarea {
    width: 100%;
    min-height: 58px;
    max-height: 180px;
    padding: 15px 16px;
    resize: vertical;
    border: 1px solid var(--line-strong);
    border-radius: 7px;
    outline: 0;
    background: rgba(35, 42, 49, .94);
    color: var(--text);
    font-size: .92rem;
    line-height: 1.45;
    transition: border-color 150ms ease, background 150ms ease, transform 150ms ease;
}
.typed-answer-panel textarea::placeholder { color: var(--faint); }
.typed-answer-panel textarea:hover { border-color: rgba(184, 205, 223, .46); }
.typed-answer-panel textarea:focus {
    border-color: rgba(158, 198, 237, .82);
    background: #252d35;
    transform: translateY(-1px);
}
.typed-answer-panel textarea:disabled { color: var(--muted); opacity: .68; }
.typed-submit {
    position: relative;
    display: grid;
    width: 52px;
    min-height: 58px;
    place-items: center;
    border: 1px solid rgba(158, 198, 237, .46);
    border-radius: 7px;
    background: rgba(158, 198, 237, .11);
    color: var(--sky);
    cursor: pointer;
    transition: color 150ms ease, border-color 150ms ease, background 150ms ease, transform 150ms ease;
}
.typed-submit:hover:not(:disabled) { transform: translateY(-1px); border-color: rgba(158, 198, 237, .76); background: rgba(158, 198, 237, .17); color: var(--text); }
.typed-submit:focus-visible,
.typed-answer-panel textarea:focus-visible { outline: 2px solid rgba(158, 198, 237, .9); outline-offset: 2px; }
.typed-submit:disabled { cursor: default; opacity: .7; }
.typed-submit-spinner {
    display: none;
    width: 24px;
    height: 24px;
    border: 2px solid rgba(225, 235, 244, .17);
    border-top-color: var(--text);
    border-right-color: var(--sky);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(158, 198, 237, .08);
    animation: spin 700ms linear infinite;
}
.typed-submit.is-loading svg { display: none; }
.typed-submit.is-loading .typed-submit-spinner { display: block; }
.typed-answer-result {
    grid-column: 1 / -1;
    min-height: 0;
    padding: 0 4px;
    color: var(--faint);
    font-size: .76rem;
    line-height: 1.4;
}
.typed-answer-result:not(:empty) { min-height: 22px; padding-top: 2px; }
.typed-answer-result.is-correct { color: var(--mint); }
.typed-answer-result.is-wrong { color: var(--rose); }
.typed-answer-result.is-error { color: var(--gold); }
body.is-type-answer-mode .grade-button { visibility: hidden; pointer-events: none; }
body.is-type-answer-mode .quiz-card:not(.is-answer) { cursor: default; }

.grading-queue {
    position: fixed;
    z-index: 240;
    right: 16px;
    bottom: 56px;
    display: grid;
    width: min(390px, calc(100vw - 24px));
    gap: 7px;
    pointer-events: none;
}
.grading-job {
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr);
    align-items: center;
    min-height: 54px;
    padding: 9px 12px 9px 9px;
    gap: 9px;
    border: 1px solid var(--line-strong);
    border-left: 3px solid var(--sky);
    border-radius: 7px;
    background: rgba(31, 37, 43, .94);
    box-shadow: 0 12px 30px rgba(10, 14, 18, .25);
    animation: grading-job-in 220ms cubic-bezier(.2, .72, .25, 1) both;
    backdrop-filter: blur(12px);
}
.grading-job.is-correct { border-left-color: var(--mint); }
.grading-job.is-wrong { border-left-color: var(--rose); }
.grading-job.is-error { border-left-color: var(--gold); }
.grading-job-icon { display: grid; width: 28px; height: 28px; place-items: center; color: var(--muted); }
.grading-job-icon svg { width: 20px; height: 20px; }
.grading-job-spinner {
    width: 25px;
    height: 25px;
    border: 2px solid rgba(225, 235, 244, .16);
    border-top-color: var(--text);
    border-right-color: var(--sky);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(158, 198, 237, .08);
    animation: spin 700ms linear infinite;
}
.grading-job.is-correct .grading-job-icon { color: var(--mint); }
.grading-job.is-wrong .grading-job-icon { color: var(--rose); }
.grading-job.is-error .grading-job-icon { color: var(--gold); }
.grading-job-copy { min-width: 0; }
.grading-job-copy strong,
.grading-job-copy span { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.grading-job-copy strong { color: var(--text); font-size: .76rem; font-weight: 720; }
.grading-job-copy span { margin-top: 2px; color: var(--muted); font-size: .7rem; }

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

.answer-row {
    display: grid;
    grid-template-columns: 48px 70px 70px 48px;
    justify-content: center;
    gap: 9px;
    padding-top: 12px;
}
.nav-button { width: 48px; height: 48px; }
.grade-button { width: 70px; height: 48px; }
.grade-button:disabled { pointer-events: none; opacity: .28; }
.grade-button.is-missed:not(:disabled):hover { color: var(--rose); border-color: rgba(231,155,159,.5); }
.grade-button.is-known:not(:disabled):hover { color: var(--mint); border-color: rgba(143,218,185,.5); }
.grade-note { min-height: 24px; padding-top: 6px; color: var(--faint); font-size: .75rem; text-align: center; }

.smart-complete-flash {
    position: fixed;
    z-index: 9999;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    background:
        radial-gradient(circle at 50% 52%, rgba(145,250,176,.52), rgba(67,195,108,.22) 36%, rgba(67,195,108,.06) 62%, transparent 100%),
        linear-gradient(180deg, rgba(119,232,153,.15), transparent 72%);
    animation: smart-batch-wash 1450ms ease-out forwards;
}

.smart-complete-flash::before,
.smart-complete-flash::after {
    position: absolute;
    inset: 0;
    content: "";
    opacity: 0;
    background:
        radial-gradient(circle at 16% 24%, rgba(205,255,214,.9) 0 3px, transparent 4px),
        radial-gradient(circle at 28% 70%, rgba(143,244,176,.78) 0 4px, transparent 5px),
        radial-gradient(circle at 43% 31%, rgba(230,255,220,.86) 0 3px, transparent 4px),
        radial-gradient(circle at 61% 66%, rgba(126,235,159,.8) 0 4px, transparent 5px),
        radial-gradient(circle at 73% 28%, rgba(221,255,226,.88) 0 3px, transparent 4px),
        radial-gradient(circle at 86% 61%, rgba(154,247,182,.82) 0 4px, transparent 5px);
    animation: smart-batch-burst 1450ms ease-out forwards;
}

.smart-complete-flash::after { animation-delay: 140ms; transform: rotate(18deg); }

.loading-state { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; pointer-events: none; background: rgba(41,47,54,.78); transition: opacity 180ms ease; }
.loading-state.is-done { opacity: 0; }
.loading-state span { width: 38px; height: 38px; border: 2px solid rgba(225,235,244,.15); border-top-color: var(--text); border-right-color: var(--sky); border-radius: 50%; box-shadow: 0 0 12px rgba(158,198,237,.08); animation: spin 720ms linear infinite; }
.empty-state { min-height: 50dvh; place-content: center; color: var(--muted); text-align: center; }
.written-stats-status { position: fixed; right: 18px; bottom: 18px; z-index: 45; margin: 0; padding: 8px 11px; border: 1px solid var(--line); border-radius: 6px; background: #232a31; color: var(--muted); font-size: .72rem; }

.revision-dialog,
.drawing-dialog {
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--text);
}
.revision-dialog::backdrop,
.drawing-dialog::backdrop { background: rgba(15,18,22,.76); backdrop-filter: blur(4px); }
.dialog-shell {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    width: min(1160px, calc(100vw - 28px));
    max-height: min(900px, calc(100dvh - 28px));
    overflow: hidden;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    background: #2b323a;
    box-shadow: 0 26px 70px rgba(0,0,0,.34);
}
.dialog-header { display: flex; align-items: center; min-height: 60px; padding: 8px; gap: 8px; border-bottom: 1px solid var(--line); background: #272e35; }
.dialog-header .icon-button { margin-left: auto; }
.dialog-heading { padding-left: 10px; font-size: 1rem; font-weight: 750; }
.dialog-tabs { display: flex; min-width: 0; gap: 6px; overflow-x: auto; }
.dialog-tabs button {
    flex: 0 0 auto;
    min-height: 40px;
    padding: 0 14px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
}
.dialog-tabs button.is-active { color: #17232c; border-color: transparent; background: var(--sky); font-weight: 700; }
.info-content,
.stats-content,
.sources-content,
.daily-content { overflow: auto; padding: clamp(16px, 2.4vw, 30px); }

.special-study-dialog { width: min(1480px, calc(100vw - 24px)); max-width: none; }
.special-study-shell {
    grid-template-columns: minmax(0, 1fr);
    width: 100%;
    height: min(930px, calc(100dvh - 24px));
    max-height: none;
    background: #293038;
}
.special-study-header { min-width: 0; gap: 10px; }
.special-study-header .dialog-heading { flex: 0 0 auto; color: var(--gold); }
.special-study-header > .icon-button { flex: 0 0 44px; margin-left: 0; }
.special-study-nav {
    display: flex;
    flex: 1 1 auto;
    min-width: 0;
    gap: 5px;
    overflow-x: auto;
    scrollbar-width: none;
}
.special-study-nav::-webkit-scrollbar { display: none; }
.special-study-nav button {
    flex: 0 0 auto;
    min-height: 40px;
    padding: 0 12px;
    border: 1px solid rgba(174,192,209,.17);
    border-radius: 6px;
    background: transparent;
    color: var(--muted);
    font-size: .74rem;
    font-weight: 650;
    cursor: pointer;
    transition: color 150ms ease, border-color 150ms ease, background 150ms ease, transform 150ms ease;
}
.special-study-nav button:hover { color: var(--text); border-color: var(--line-strong); transform: translateY(-1px); }
.special-study-nav button.is-active { color: #202932; border-color: transparent; background: var(--gold); }
.special-study-content {
    min-width: 0;
    overflow: auto;
    padding: 0 clamp(16px, 3vw, 42px) 42px;
    scroll-behavior: smooth;
    scroll-padding-top: 20px;
}
.special-study-book { width: min(1280px, 100%); margin: 0 auto; }
.special-study-section {
    --section-tone: var(--sky);
    padding: clamp(24px, 3vw, 42px) 0;
    border-top: 2px solid color-mix(in srgb, var(--section-tone) 62%, transparent);
}
.special-study-section:first-child { border-top: 0; }
.special-study-section[data-tone="rose"] { --section-tone: var(--rose); }
.special-study-section[data-tone="mint"] { --section-tone: var(--mint); }
.special-study-section[data-tone="gold"] { --section-tone: var(--gold); }
.special-study-section[data-tone="aqua"] { --section-tone: var(--aqua); }
.special-study-section[data-tone="lilac"] { --section-tone: var(--lilac); }
.special-study-section > header { display: flex; align-items: baseline; gap: 12px; margin-bottom: 18px; }
.special-study-section > header span { color: var(--section-tone); font-size: .68rem; font-weight: 800; }
.special-study-section > header h2 { margin: 0; font-size: clamp(1.2rem, 2vw, 1.75rem); font-weight: 720; }
.special-fact-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 8px; margin-top: 14px; }
.special-fact-grid article {
    position: relative;
    min-width: 0;
    padding: 13px 15px 13px 18px;
    border: 1px solid rgba(174,192,209,.14);
    border-radius: 6px;
    background: rgba(34,40,47,.42);
}
.special-fact-grid article::before { content: ""; position: absolute; inset: 10px auto 10px 0; width: 3px; background: var(--section-tone); }
.special-fact-grid strong { display: block; margin-bottom: 4px; color: var(--section-tone); font-size: .76rem; }
.special-fact-grid p { margin: 0; color: #d9e1e8; font-size: .85rem; line-height: 1.52; }
.special-visual-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 10px; margin: 14px 0; }
.special-visual-grid.is-single { grid-template-columns: 1fr; }
.special-visual {
    display: grid;
    min-width: 0;
    margin: 0;
    overflow: hidden;
    border: 1px solid rgba(174,192,209,.2);
    border-radius: 7px;
    background: #f3f5f6;
}
.special-visual img { display: block; width: 100%; height: 280px; object-fit: contain; }
.special-visual-grid.is-single img { height: auto; max-height: 470px; background: #20262d; }
.special-visual figcaption { display: flex; align-items: center; justify-content: space-between; min-height: 40px; padding: 8px 11px; gap: 10px; border-top: 1px solid rgba(47,58,68,.17); background: #e8ecef; color: #2c3740; font-size: .7rem; }
.special-visual figcaption strong { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.special-visual figcaption .study-term { color: #356e9f; }
.special-visual figcaption span { flex: 0 0 auto; color: #66737e; }
.special-table-wrap { margin-top: 14px; overflow-x: auto; border: 1px solid rgba(174,192,209,.17); border-radius: 7px; }
.special-table { width: 100%; min-width: 680px; border-collapse: collapse; background: rgba(34,40,47,.34); }
.special-table th, .special-table td { padding: 12px 14px; border-right: 1px solid rgba(174,192,209,.11); border-bottom: 1px solid rgba(174,192,209,.11); color: #d7e0e7; font-size: .81rem; line-height: 1.45; text-align: left; vertical-align: top; }
.special-table thead th { color: var(--section-tone); background: rgba(26,31,36,.48); font-size: .7rem; text-transform: uppercase; }
.special-table tbody th { color: var(--text); font-weight: 720; }
.special-table tr:last-child > * { border-bottom: 0; }
.special-table tr > *:last-child { border-right: 0; }
.special-model-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 10px; margin: 14px 0; }
.special-model-grid .organic-library-figure { display: grid; grid-template-rows: minmax(0,1fr) auto; min-width: 0; min-height: 260px; margin: 0; overflow: hidden; border: 1px solid rgba(174,192,209,.17); border-radius: 7px; background: #252c33; }
.special-model-grid .organic-library-model { position: relative; min-height: 220px; overflow: hidden; contain: layout paint; isolation: isolate; }
.special-model-grid .organic-library-model canvas { position: absolute !important; inset: 0; width: 100% !important; height: 100% !important; pointer-events: none !important; }
.special-model-grid .organic-library-placeholder { position: absolute; left: 50%; top: 50%; width: 26px; height: 26px; margin: -13px 0 0 -13px; border: 2px solid rgba(222,232,241,.18); border-top-color: #dce6f0; border-radius: 50%; animation: spin 720ms linear infinite; }
.special-model-grid .organic-library-model[data-conformation-rendered="true"] .organic-library-placeholder { display: none; }
.special-model-grid figcaption { min-height: 38px; padding: 8px 10px; color: var(--muted); font-size: .72rem; font-weight: 680; text-align: center; }

.overview-priority { display: grid; gap: 18px; }
.overview-block { border-top: 2px solid var(--sky); padding-top: 12px; }
.overview-block[data-tone="rose"] { border-color: var(--rose); }
.overview-block[data-tone="mint"] { border-color: var(--mint); }
.overview-block[data-tone="gold"] { border-color: var(--gold); }
.overview-block[data-tone="lilac"] { border-color: var(--lilac); }
.overview-block h2 { margin: 0 0 10px; font-size: 1.1rem; }
.overview-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 8px; }
.overview-item { padding: 12px 14px; border: 1px solid rgba(174,192,209,.13); border-radius: 6px; background: rgba(34,40,47,.45); }
.overview-item strong { display: block; margin-bottom: 4px; color: var(--sky); font-size: .78rem; }
.overview-item p { margin: 0; color: #d8e0e7; font-size: .85rem; line-height: 1.48; }
.overview-sources { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.overview-sources button { min-height: 30px; padding: 0 10px; border: 1px solid var(--line); border-radius: 5px; background: transparent; color: var(--muted); font-size: .68rem; cursor: pointer; }
.overview-sources button:hover { color: var(--text); border-color: var(--line-strong); }

.glossary-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 9px; }
.glossary-entry { padding: 12px; border: 1px solid rgba(174,192,209,.14); border-radius: 6px; background: rgba(34,40,47,.5); }
.glossary-entry dt { margin-bottom: 5px; color: var(--sky); font-size: .82rem; font-weight: 750; }
.glossary-entry dd { margin: 0; color: #d4dde5; font-size: .78rem; line-height: 1.46; }
.structure-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px; }
.structure-entry { display: grid; grid-template-rows: auto 240px auto; min-width: 0; padding: 12px; border: 1px solid rgba(174,192,209,.14); border-radius: 6px; background: rgba(34,40,47,.5); }
.structure-entry strong { color: var(--text); font-size: .85rem; }
.structure-entry svg { width: 100%; height: 240px; }
.structure-entry small { color: var(--faint); font-size: .7rem; }
.source-reference-grid { display: grid; gap: 8px; }

.source-row {
    display: grid;
    grid-template-columns: 36px minmax(0,1fr) auto;
    align-items: center;
    width: 100%;
    min-height: 58px;
    padding: 8px 12px;
    gap: 10px;
    border: 1px solid rgba(174,192,209,.15);
    border-radius: 6px;
    background: rgba(34,40,47,.42);
    color: var(--text);
    text-align: left;
    cursor: pointer;
    transition: border-color 150ms ease, background 150ms ease, transform 150ms ease;
}
.source-row:hover { transform: translateX(2px); border-color: rgba(158,198,237,.45); background: rgba(158,198,237,.07); }
.source-row svg { color: var(--sky); }
.source-row span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.source-row small { color: var(--faint); }
.source-row.is-material-loading svg { animation: spin 720ms linear infinite; }

.stat-metrics { display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); gap: 8px; }
.stat-metric { min-height: 96px; padding: 14px; border: 1px solid rgba(174,192,209,.14); border-radius: 6px; background: rgba(34,40,47,.48); }
.stat-metric span { display: block; color: var(--faint); font-size: .68rem; text-transform: uppercase; }
.stat-metric strong { display: block; margin-top: 12px; font-size: 1.55rem; font-weight: 720; }
.stats-category-list { display: grid; margin-top: 20px; gap: 7px; }
.stats-category-row { display: grid; grid-template-columns: minmax(120px,1fr) 3fr auto; align-items: center; gap: 12px; min-height: 38px; }
.stats-category-row span { overflow: hidden; color: var(--muted); font-size: .78rem; text-overflow: ellipsis; white-space: nowrap; }
.stats-category-row i { height: 4px; overflow: hidden; border-radius: 4px; background: rgba(255,255,255,.09); }
.stats-category-row i b { display: block; height: 100%; background: var(--sky); }
.stats-category-row strong { min-width: 60px; color: var(--muted); font-size: .75rem; text-align: right; }
.activity-grid { display: grid; grid-template-columns: repeat(14, minmax(12px,1fr)); gap: 5px; margin-top: 22px; }
.activity-day { aspect-ratio: 1; border: 1px solid rgba(174,192,209,.1); border-radius: 3px; background: rgba(255,255,255,.045); }
.activity-day[data-level="1"] { background: rgba(143,218,185,.25); }
.activity-day[data-level="2"] { background: rgba(143,218,185,.43); }
.activity-day[data-level="3"] { background: rgba(143,218,185,.67); }
.activity-day[data-level="4"] { background: rgba(143,218,185,.9); }

.drawing-dialog { width: min(1480px, calc(100vw - 18px)); height: min(920px, calc(100dvh - 18px)); }
.drawing-shell { display: grid; grid-template-rows: 58px minmax(0,1fr); width: 100%; height: 100%; overflow: hidden; border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--bg); box-shadow: 0 26px 70px rgba(0,0,0,.36); }
.drawing-header { display: grid; grid-template-columns: 1fr auto 44px; align-items: center; min-height: 58px; padding: 7px; gap: 10px; border-bottom: 1px solid var(--line); background: #272e35; }
.drawing-header > div:first-child { display: grid; padding-left: 10px; }
.drawing-header span { color: var(--rose); font-size: .65rem; text-transform: uppercase; }
.drawing-header strong { font-size: .95rem; }
.drawing-status { min-width: 120px; color: var(--muted); font-size: .78rem; text-align: right; }
.drawing-status.is-correct { color: var(--mint); }
.drawing-status.is-wrong { color: var(--rose); }
.drawing-shell iframe { width: 100%; height: 100%; border: 0; background: var(--bg); }

.daily-summary { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 8px; }
.daily-summary div { padding: 16px; border: 1px solid rgba(174,192,209,.14); border-radius: 6px; background: rgba(34,40,47,.5); }
.daily-summary span { display: block; color: var(--faint); font-size: .68rem; text-transform: uppercase; }
.daily-summary strong { display: block; margin-top: 8px; font-size: 1.45rem; }

.ui-tooltip,
.term-tooltip {
    position: fixed;
    z-index: 300;
    max-width: 300px;
    padding: 7px 9px;
    pointer-events: none;
    border: 1px solid var(--line-strong);
    border-radius: 5px;
    background: #1f252b;
    color: #e5edf4;
    box-shadow: 0 8px 22px rgba(0,0,0,.28);
    font-size: .72rem;
    line-height: 1.42;
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 110ms ease, transform 110ms ease;
}
.term-tooltip { max-width: 360px; border-color: rgba(158,198,237,.38); }
.ui-tooltip[aria-hidden="false"],
.term-tooltip[aria-hidden="false"] { opacity: 1; transform: translateY(0); }

.goal-celebration { position: fixed; z-index: 250; inset: 0; pointer-events: none; overflow: hidden; }
.goal-particle { position: absolute; left: 50%; top: 24%; width: 5px; height: 18px; border-radius: 2px; background: var(--mint); animation: goal-burst 1200ms cubic-bezier(.12,.7,.2,1) forwards; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes stage-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
@keyframes card-copy-in { from { opacity: 0; transform: translateY(8px) scale(.992); } to { opacity: 1; transform: translateY(0) scale(1); } }
@keyframes goal-burst { 0% { opacity: 0; transform: translate(0,0) rotate(0); } 10% { opacity: 1; } 100% { opacity: 0; transform: translate(var(--dx), var(--dy)) rotate(var(--turn)); } }
@keyframes smart-batch-wash { 0% { opacity: 0; transform: scale(.98); } 18% { opacity: 1; transform: scale(1); } 100% { opacity: 0; transform: scale(1.06); } }
@keyframes smart-batch-burst { 0% { opacity: 0; transform: scale(.52); } 22% { opacity: 1; } 82% { opacity: .8; } 100% { opacity: 0; transform: scale(1.08); } }
@keyframes grading-job-in { from { opacity: 0; transform: translateY(7px) scale(.985); } to { opacity: 1; transform: translateY(0) scale(1); } }

@media (max-width: 800px) {
    .revision-shell { padding: 8px 8px 18px; }
    .revision-topbar { min-height: 50px; }
    .revision-title-mark { display: none; }
    .revision-toolbar { min-height: 58px; padding: 7px; gap: 6px; }
    .mode-segment { grid-template-columns: repeat(5, 44px); height: 44px; }
    .mode-button { width: 44px; }
    .revision-toolbar > .icon-button,
    .card-search > .icon-button { width: 42px; height: 42px; }
    .filter-panel { margin-top: 6px; }
    .filter-content { padding: 8px 52px 8px 8px; }
    .quiz-progress { min-height: 34px; }
    .quiz-card { min-height: calc(100dvh - 254px); padding: 98px 15px 38px; }
    .card-meta { left: 8px; top: 9px; max-width: calc(100% - 100px); }
    .meta-pill { min-height: 25px; padding: 4px 7px; font-size: .61rem; }
    .card-tools { right: 7px; top: 7px; gap: 5px; }
    .card-tool { width: 37px; height: 37px; }
    .card-copy { font-size: clamp(1.15rem, 5.2vw, 1.7rem); }
    .card-copy.is-answer-copy { font-size: .94rem; line-height: 1.48; }
    .answer-sections { gap: 8px; }
    .answer-section { padding: 10px 10px 10px 15px; }
    .card-diagram { min-height: 185px; max-height: 34dvh; margin-top: 14px; padding: 4px; }
    .card-diagram svg { height: 31dvh; min-height: 180px; }
    .compound-image-grid { grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }
    .compound-image { grid-template-rows: minmax(165px, 27dvh) auto; }
    .answer-row { grid-template-columns: 44px 62px 62px 44px; gap: 7px; padding-top: 8px; }
    .nav-button { width: 44px; height: 46px; }
    .grade-button { width: 62px; height: 46px; }
    .typed-answer-panel { width: calc(100% - 12px); grid-template-columns: minmax(0, 1fr) 48px; margin-top: 8px; gap: 6px; }
    .typed-answer-panel textarea { min-height: 54px; padding: 12px; font-size: .88rem; }
    .typed-submit { width: 48px; min-height: 54px; }
    .grading-queue { right: 8px; bottom: 54px; width: calc(100vw - 16px); }
    .dialog-shell { width: 100vw; max-height: 100dvh; height: 100dvh; border: 0; border-radius: 0; }
    .dialog-header { min-height: 56px; }
    .special-study-dialog { inset: 0; width: 100vw; height: 100dvh; max-width: none; max-height: none; margin: 0; }
    .special-study-shell { width: 100vw; height: 100dvh; }
    .special-study-header .dialog-heading { display: none; }
    .special-study-nav button { min-height: 38px; padding: 0 10px; }
    .special-study-content { padding-inline: 12px; }
    .special-fact-grid { grid-template-columns: 1fr; }
    .special-visual-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .special-model-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .overview-grid,
    .glossary-grid,
    .structure-grid { grid-template-columns: 1fr; }
    .structure-entry { grid-template-rows: auto 210px auto; }
    .structure-entry svg { height: 210px; }
    .stat-metrics { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .stats-category-row { grid-template-columns: minmax(90px,1fr) 1.5fr auto; }
    .drawing-dialog { inset: 0; width: 100vw; height: 100dvh; max-width: none; max-height: none; margin: 0; }
    .drawing-shell { border: 0; border-radius: 0; }
    .drawing-header { grid-template-columns: 1fr minmax(0,auto) 44px; }
    .drawing-status { min-width: 0; max-width: 120px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .daily-summary { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
    .revision-toolbar { flex-wrap: wrap; }
    .mode-segment { order: 1; width: 100%; grid-template-columns: repeat(5, 1fr); }
    .mode-button { width: auto; }
    .toolbar-spacer { display: none; }
    .revision-toolbar > .icon-button:first-of-type { margin-left: auto; }
    .quiz-card { min-height: calc(100dvh - 302px); }
    .daily-counter:hover,
    .daily-counter:focus-visible,
    .daily-counter:focus-within { width: 158px; }
    .daily-copy { flex-basis: 80px; min-width: 80px; }
    .daily-track { width: 76px; }
    .special-study-header { padding-inline: 5px; gap: 5px; }
    .special-study-header > .icon-button { flex-basis: 40px; width: 40px; height: 40px; }
    .special-study-nav button { padding-inline: 9px; font-size: .69rem; }
    .special-visual-grid,
    .special-model-grid { grid-template-columns: 1fr; }
    .special-visual img { height: 250px; }
    .special-model-grid .organic-library-figure { min-height: 250px; }
    .special-table { min-width: 620px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        scroll-behavior: auto !important;
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }
}