*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --icpc-blue: #2f6fde;
    --icpc-yellow: #f7c32e;
    --icpc-red: #e23d3d;
    --radius: 16px;
    --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

:root,
[data-theme="dark"] {
    color-scheme: dark;
    --bg: #080d1a;
    --bg-grid: rgba(120, 146, 199, 0.07);
    --glow: rgba(47, 111, 222, 0.24);
    --surface: #0f1729;
    --surface-raised: #152038;
    --surface-sunken: #0b1222;
    --border: #1f2c47;
    --border-strong: #31436a;
    --text: #e7ecf6;
    --text-muted: #9aa8c3;
    --text-faint: #66758f;
    --accent: #5d9bff;
    --accent-soft: rgba(93, 155, 255, 0.16);
    --ac: #34c77b;
    --ac-soft: rgba(52, 199, 123, 0.13);
    --ac-ink: #04150c;
    --pending: #f5b544;
    --pending-soft: rgba(245, 181, 68, 0.12);
    --danger: #ff6b6b;
    --danger-soft: rgba(255, 107, 107, 0.09);
    --code-bg: rgba(93, 155, 255, 0.12);
    --code-text: #a9c8ff;
    --shadow: 0 18px 40px -24px rgba(0, 0, 0, 0.8);
    --backdrop: rgba(3, 6, 14, 0.72);
}

[data-theme="light"] {
    color-scheme: light;
    --bg: #f3f5fa;
    --bg-grid: rgba(30, 58, 110, 0.06);
    --glow: rgba(47, 111, 222, 0.14);
    --surface: #ffffff;
    --surface-raised: #f4f7fc;
    --surface-sunken: #eef2f8;
    --border: #dfe5f0;
    --border-strong: #c3cde0;
    --text: #0e1628;
    --text-muted: #4f5d78;
    --text-faint: #7d8aa3;
    --accent: #1f5fd6;
    --accent-soft: rgba(31, 95, 214, 0.12);
    --ac: #13894f;
    --ac-soft: rgba(19, 137, 79, 0.1);
    --ac-ink: #ffffff;
    --pending: #a96400;
    --pending-soft: rgba(230, 150, 20, 0.12);
    --danger: #d23b3b;
    --danger-soft: rgba(210, 59, 59, 0.06);
    --code-bg: rgba(31, 95, 214, 0.08);
    --code-text: #1a4fb4;
    --shadow: 0 18px 40px -28px rgba(15, 30, 70, 0.35);
    --backdrop: rgba(14, 22, 40, 0.45);
}

/* Balloon colors, one per section letter */
[data-letter="A"] { --balloon: #d9363e; --balloon-ink: #ffffff; }
[data-letter="B"] { --balloon: #f59e0b; --balloon-ink: #261700; }
[data-letter="C"] { --balloon: #f7c32e; --balloon-ink: #2b2100; }
[data-letter="D"] { --balloon: #2bb673; --balloon-ink: #03200f; }
[data-letter="E"] { --balloon: #2f6fde; --balloon-ink: #ffffff; }
[data-letter="F"] { --balloon: #7c4dff; --balloon-ink: #ffffff; }
[data-letter="G"] { --balloon: #d6337f; --balloon-ink: #ffffff; }
[data-letter="H"] { --balloon: #14b8a6; --balloon-ink: #00201c; }

[data-theme="light"] .in-dark,
[data-theme="dark"] .in-light {
    display: none;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--bg);
    background-image:
        radial-gradient(900px 420px at 50% -120px, var(--glow), transparent 70%),
        linear-gradient(var(--bg-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
    background-size: auto, 28px 28px, 28px 28px;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

button {
    font: inherit;
}

code {
    font-family: var(--font-mono);
    font-size: 0.86em;
    font-variant-ligatures: none;
    background: var(--code-bg);
    color: var(--code-text);
    padding: 0.12em 0.45em;
    border-radius: 6px;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    -webkit-box-decoration-break: clone;
    box-decoration-break: clone;
}

.container {
    max-width: 880px;
    margin: 0 auto;
    padding: 28px 16px 48px;
    padding-left: max(16px, env(safe-area-inset-left));
    padding-right: max(16px, env(safe-area-inset-right));
}

/* Hero */
.hero {
    margin-bottom: 28px;
}

.hero-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 40px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.brand img {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    flex-shrink: 0;
}

.brand-text {
    display: flex;
    flex-direction: column;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    line-height: 1.35;
    color: var(--text-muted);
}

.brand-text strong {
    color: var(--text);
    font-weight: 700;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
}

.theme-toggle:hover {
    color: var(--text);
    border-color: var(--border-strong);
}

.theme-toggle svg {
    width: 16px;
    height: 16px;
}

.tricolor {
    display: flex;
    gap: 5px;
}

.tricolor span {
    width: 28px;
    height: 5px;
    border-radius: 999px;
    background: var(--icpc-blue);
}

.tricolor span:nth-child(2) { background: var(--icpc-yellow); }
.tricolor span:nth-child(3) { background: var(--icpc-red); }

.hero h1 {
    margin: 16px 0 12px;
    font-size: clamp(2rem, 4.5vw + 0.6rem, 3.1rem);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -0.03em;
}

.hero h1 .accent {
    color: var(--accent);
}

.lead {
    max-width: 56ch;
    font-size: 1.05rem;
    color: var(--text-muted);
}

/* Shared card look */
.scoreboard,
.problem {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* Balloon */
.balloon {
    --size: 34px;
    position: relative;
    display: inline-grid;
    place-items: center;
    flex-shrink: 0;
    width: var(--size);
    height: calc(var(--size) * 1.12);
    margin-bottom: 5px;
    padding-bottom: 2px;
    border-radius: 50% 50% 46% 46% / 46% 46% 54% 54%;
    background:
        radial-gradient(circle at 32% 28%, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0) 38%),
        var(--balloon, var(--text-faint));
    box-shadow: inset -4px -6px 10px rgba(0, 0, 0, 0.18);
    color: var(--balloon-ink, #ffffff);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 800;
    line-height: 1;
}

.balloon::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-bottom: 6px solid var(--balloon, var(--text-faint));
}

/* Scoreboard */
.scoreboard {
    padding: 20px;
    margin-bottom: 16px;
}

.scoreboard-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 4px 12px;
    margin-bottom: 16px;
}

.scoreboard-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.scoreboard-title::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--icpc-red);
    box-shadow: 0 0 0 4px rgba(226, 61, 61, 0.18);
}

.scoreboard-hint {
    font-size: 0.8rem;
    color: var(--text-faint);
}

.score-summary {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    grid-template-areas: "done bar accepted";
    align-items: center;
    gap: 14px 24px;
    margin-bottom: 18px;
}

.score-done { grid-area: done; }
.score-accepted { grid-area: accepted; align-items: flex-end; }
.score-progress { grid-area: bar; }

.score-stat {
    display: flex;
    flex-direction: column;
}

.score-value {
    font-family: var(--font-mono);
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.15;
    font-variant-numeric: tabular-nums;
}

.score-value small {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-faint);
}

.score-label {
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.score-progress {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.progress-track {
    flex: 1;
    height: 10px;
    border-radius: 999px;
    background: var(--surface-sunken);
    border: 1px solid var(--border);
    overflow: hidden;
}

.progress-fill {
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--icpc-blue), var(--ac));
    transition: width 0.4s ease;
}

.progress-percent {
    min-width: 4ch;
    text-align: right;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
}

.score-cells {
    display: grid;
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: 8px;
}

.score-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    min-width: 0;
    padding: 12px 4px 10px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--surface-sunken);
    color: var(--text-muted);
    text-decoration: none;
    transition: transform 0.15s, border-color 0.2s, background 0.2s;
}

.score-cell:hover {
    transform: translateY(-2px);
    border-color: var(--border-strong);
}

.score-cell:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.score-cell .balloon {
    --size: 30px;
    opacity: 0.3;
    filter: grayscale(0.7);
    transition: opacity 0.3s, filter 0.3s;
}

.cell-name {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text);
}

.cell-verdict {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
}

.score-cell[data-state="partial"] {
    background: var(--pending-soft);
    border-color: color-mix(in srgb, var(--pending) 35%, transparent);
}

.score-cell[data-state="partial"] .cell-verdict {
    color: var(--pending);
}

.score-cell[data-state="partial"] .balloon {
    opacity: 0.65;
    filter: grayscale(0.25);
}

.score-cell[data-state="ac"] {
    background: var(--ac-soft);
    border-color: color-mix(in srgb, var(--ac) 45%, transparent);
}

.score-cell[data-state="ac"] .cell-verdict {
    color: var(--ac);
}

.score-cell[data-state="ac"] .balloon {
    opacity: 1;
    filter: none;
    animation: bob 3s ease-in-out infinite;
}

/* Notice */
.notice {
    display: flex;
    gap: 14px;
    margin-bottom: 28px;
    padding: 18px 20px;
    border-radius: var(--radius);
    border: 1px solid color-mix(in srgb, var(--danger) 30%, transparent);
    background: var(--danger-soft);
}

.notice-icon {
    display: grid;
    place-items: center;
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--danger);
    color: #ffffff;
    font-family: var(--font-mono);
    font-weight: 800;
}

.notice h2 {
    margin-bottom: 6px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--danger);
}

.notice p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

.notice p + p {
    margin-top: 6px;
}

.notice strong {
    color: var(--text);
    font-weight: 600;
}

/* Sections */
.problems {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.problem {
    position: relative;
    overflow: hidden;
    scroll-margin-top: 16px;
    transition: border-color 0.2s;
}

.problem::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 4px;
    background: var(--balloon);
}

.problem[data-state="ac"] {
    border-color: color-mix(in srgb, var(--ac) 40%, var(--border));
}

.problem-head {
    display: flex;
    align-items: center;
    padding-right: 12px;
}

.problem-head h2 {
    flex: 1;
    min-width: 0;
    font-size: inherit;
    font-weight: inherit;
}

.problem-toggle {
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    padding: 16px 8px 16px 20px;
    border: 0;
    background: none;
    color: inherit;
    text-align: left;
    cursor: pointer;
}

.problem-toggle:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: -2px;
    border-radius: var(--radius);
}

.problem-name {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    min-width: 0;
}

.problem-title {
    font-size: 1.08rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.3;
    overflow-wrap: anywhere;
}

.problem-tag {
    display: inline-block;
    margin-left: 6px;
    padding: 3px 8px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    vertical-align: 2px;
    white-space: nowrap;
}

.problem-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.verdict {
    flex-shrink: 0;
    min-width: 3.4rem;
    padding: 4px 10px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--surface-sunken);
    color: var(--text-muted);
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 700;
}

.problem[data-state="partial"] .verdict {
    border-color: transparent;
    background: var(--pending-soft);
    color: var(--pending);
}

.problem[data-state="ac"] .verdict {
    border-color: transparent;
    background: var(--ac);
    color: var(--ac-ink);
}

.chevron {
    flex-shrink: 0;
    width: 9px;
    height: 9px;
    margin: 0 4px;
    border-right: 2px solid var(--text-faint);
    border-bottom: 2px solid var(--text-faint);
    transform: translateY(-2px) rotate(45deg);
    transition: transform 0.25s ease;
}

.problem.open .chevron {
    transform: translateY(2px) rotate(225deg);
}

.copy-link {
    display: grid;
    place-items: center;
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 1px solid transparent;
    background: none;
    color: var(--text-faint);
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.copy-link:hover,
.copy-link:focus-visible {
    color: var(--accent);
    border-color: var(--border);
    background: var(--surface-raised);
    outline: none;
}

.copy-link svg {
    width: 15px;
    height: 15px;
}

/* Collapse with a 0fr -> 1fr grid row so the height animates without a max-height guess */
.problem-body {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.3s ease;
}

.problem.open .problem-body {
    grid-template-rows: 1fr;
}

.items {
    --row-pad: 10px;
    --check-size: 22px;
    --number-width: 2rem;
    --col-gap: 12px;
    min-height: 0;
    overflow: hidden;
    visibility: hidden;
    list-style: none;
    padding: 0 12px;
    transition: visibility 0.3s;
}

.problem.open .items {
    visibility: visible;
}

.items::before {
    content: '';
    display: block;
    height: 1px;
    margin: 0 8px 8px;
    background: var(--border);
}

.items::after {
    content: '';
    display: block;
    height: 12px;
}

.item-group {
    padding: 14px var(--row-pad) 4px calc(var(--row-pad) + var(--check-size) + var(--number-width) + 2 * var(--col-gap));
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-faint);
}

.item-group:first-child {
    padding-top: 6px;
}

.check-item label {
    display: grid;
    grid-template-columns: var(--check-size) var(--number-width) minmax(0, 1fr);
    column-gap: var(--col-gap);
    align-items: start;
    padding: 12px var(--row-pad);
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.15s;
}

.check-item label:hover {
    background: var(--surface-raised);
}

.check-item input {
    -webkit-appearance: none;
    appearance: none;
    display: grid;
    place-content: center;
    width: var(--check-size);
    height: var(--check-size);
    margin-top: 1px;
    border: 2px solid var(--border-strong);
    border-radius: 7px;
    background: var(--surface);
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.check-item input::before {
    content: '';
    width: 12px;
    height: 12px;
    background: var(--ac-ink);
    clip-path: polygon(14% 44%, 0 65%, 50% 100%, 100% 16%, 80% 0%, 43% 62%);
    transform: scale(0);
    transition: transform 0.15s ease;
}

.check-item label:hover input:not(:checked) {
    border-color: var(--accent);
}

.check-item input:checked {
    border-color: var(--ac);
    background: var(--ac);
}

.check-item input:checked::before {
    transform: scale(1);
}

.check-item input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.item-no {
    padding-top: 5px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    line-height: 1;
    color: var(--text-faint);
}

.item-text {
    min-width: 0;
    overflow-wrap: anywhere;
    transition: color 0.2s;
}

.item-text strong {
    font-weight: 600;
    color: var(--accent);
}

.check-item input:checked ~ .item-no {
    color: var(--ac);
}

.check-item input:checked ~ .item-text {
    color: var(--text-faint);
    text-decoration: line-through;
    text-decoration-color: color-mix(in srgb, var(--text-faint) 60%, transparent);
}

.check-item input:checked ~ .item-text strong,
.check-item input:checked ~ .item-text code {
    color: inherit;
    background: none;
}

.sub-list {
    display: grid;
    gap: 8px;
    margin-top: 10px;
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--surface-sunken);
    font-size: 0.92em;
}

.checker-list {
    grid-template-columns: 4.6rem minmax(0, 1fr);
    column-gap: 12px;
    align-items: baseline;
}

.checker-list > code {
    justify-self: start;
}

.checker-list .codes {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
}

.steps {
    counter-reset: step;
}

.steps > span {
    position: relative;
    padding-left: 1.5rem;
    counter-increment: step;
}

.steps > span::before {
    content: counter(step) ".";
    position: absolute;
    left: 0;
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--accent);
}

/* Reset */
.reset-btn {
    display: block;
    margin: 32px auto 0;
    padding: 11px 22px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.reset-btn:hover {
    color: var(--danger);
    border-color: var(--danger);
    background: var(--danger-soft);
}

/* Footer */
.footer {
    padding: 0 16px max(32px, env(safe-area-inset-bottom));
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-faint);
}

.footer a {
    color: var(--accent);
    font-weight: 600;
    text-decoration: none;
}

.footer a:hover,
.footer a:focus-visible {
    text-decoration: underline;
}

.heart {
    display: inline-block;
    color: var(--icpc-red);
    animation: beat 1.6s ease-in-out infinite;
}

.verdict-wa {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--danger);
}

@keyframes beat {
    0%, 60%, 100% { transform: scale(1); }
    30% { transform: scale(1.25); }
}

/* Toast */
.toast {
    position: fixed;
    left: 50%;
    bottom: max(24px, env(safe-area-inset-bottom));
    z-index: 50;
    max-width: calc(100% - 32px);
    padding: 9px 18px;
    border-radius: 999px;
    background: var(--text);
    color: var(--bg);
    font-size: 0.85rem;
    font-weight: 600;
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, 16px);
    transition: opacity 0.2s, transform 0.2s;
}

.toast.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

/* Celebration */
.celebration {
    width: 100%;
    max-width: min(420px, calc(100% - 32px));
    margin: auto;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--text);
}

.celebration::backdrop {
    background: var(--backdrop);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
}

.celebration-card {
    padding: 32px 24px 24px;
    border-radius: 20px;
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: var(--shadow);
    text-align: center;
    animation: pop 0.35s ease;
}

.balloon-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
    margin-bottom: 20px;
}

.balloon-row .balloon {
    animation: float 3s ease-in-out infinite;
    animation-delay: calc(var(--i, 0) * -0.35s);
}

.celebration h2 {
    margin-bottom: 6px;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.ac-text {
    color: var(--ac);
}

.celebration p {
    margin-bottom: 20px;
    color: var(--text-muted);
}

.btn-primary {
    padding: 10px 24px;
    border-radius: 999px;
    border: 0;
    background: var(--ac);
    color: var(--ac-ink);
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
}

.btn-primary:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

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

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

@keyframes bob {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-3px); }
}

/* Responsive */
@media (min-width: 640px) {
    .container {
        padding-top: 40px;
        padding-left: max(24px, env(safe-area-inset-left));
        padding-right: max(24px, env(safe-area-inset-right));
    }
}

@media (max-width: 720px) {
    .score-cells {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

@media (max-width: 560px) {
    .hero-bar {
        margin-bottom: 28px;
    }

    .lead {
        font-size: 0.98rem;
    }

    .scoreboard {
        padding: 16px;
    }

    .score-summary {
        grid-template-columns: 1fr 1fr;
        grid-template-areas:
            "done accepted"
            "bar bar";
    }

    .score-value {
        font-size: 1.35rem;
    }

    .notice {
        padding: 16px;
    }

    .problem-head {
        padding-right: 6px;
    }

    .problem-toggle {
        gap: 10px;
        padding: 14px 4px 14px 16px;
    }

    .problem-toggle .balloon {
        --size: 30px;
    }

    .problem-title {
        font-size: 1rem;
    }

    .problem-desc {
        font-size: 0.8rem;
    }

    .verdict {
        min-width: 3rem;
        padding: 3px 8px;
        font-size: 0.72rem;
    }

    .items {
        --row-pad: 6px;
        --number-width: 1.6rem;
        --col-gap: 10px;
        padding: 0 8px;
    }

    .item-text {
        font-size: 0.95rem;
    }

    .sub-list {
        padding: 10px;
    }
}

@media (max-width: 380px) {
    .theme-label {
        display: none;
    }

    .score-cells {
        gap: 6px;
    }

    .cell-name {
        font-size: 0.66rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }
}