.chal-wrap,
.chal-lb {
    --c: #4ecdc4;
    --chal-surface: #132d22;
    --chal-surface-2: #0e231a;
    --chal-border: #4f6d56;
    --chal-border-soft: #34503f;
    --chal-ink: #e4ecdc;
    --chal-dim: #b0c4b3;
    --chal-mute: #86a08c;
    --chal-gold: #e9d6a3;
    color: var(--chal-ink);
}

.chal-wrap { display: flex; flex-direction: column; gap: 16px; max-width: 1100px; margin: 0 auto; padding: 16px; }
.chal-title { font: 600 24px/1.3 Georgia, serif; color: var(--chal-gold); }
.chal-locked { padding: 28px 22px; border: 1px dashed var(--chal-border); border-radius: 9px; background: var(--chal-surface-2); color: var(--chal-dim); line-height: 1.7; text-align: center; }

.chal-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); grid-auto-rows: 1fr; gap: 16px; }
.chal-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-width: 0;
    padding: 18px;
    border: 1px solid var(--chal-border);
    border-top: 3px solid var(--c);
    border-radius: 10px;
    background: linear-gradient(180deg, color-mix(in srgb, var(--c) 11%, transparent), transparent 110px), var(--chal-surface);
}
.chal-card__head { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.chal-card__name { margin: 0; font: 600 21px/1.2 Georgia, serif; color: var(--c); }
.chal-card__tag { margin: 3px 0 0; font-size: 12px; font-style: italic; color: var(--chal-mute); }
.chal-desc { flex: 1 0 auto; margin: 0; font-size: 13px; line-height: 1.6; color: var(--chal-dim); }

.chal-facts { display: flex; flex-direction: column; gap: 6px; }
.chal-fact { display: flex; align-items: center; gap: 8px; padding: 8px 10px; border: 1px solid transparent; border-radius: 6px; background: var(--chal-surface-2); font-size: 12px; }
.chal-fact svg { flex: 0 0 15px; width: 15px; height: 15px; color: var(--chal-mute); }
.chal-fact__label { flex: 0 0 auto; min-width: 38px; font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--chal-mute); }
.chal-fact__value { min-width: 0; overflow: hidden; font-weight: 600; color: var(--chal-ink); text-overflow: ellipsis; white-space: nowrap; }
.chal-fact--goal { border-color: color-mix(in srgb, var(--c) 35%, transparent); background: color-mix(in srgb, var(--c) 12%, var(--chal-surface-2)); }
.chal-fact--goal svg { color: var(--c); }

.chal-pill { flex: 0 0 auto; padding: 3px 10px; border: 1px solid var(--chal-border-soft); border-radius: 999px; background: var(--chal-surface-2); color: var(--chal-mute); font-size: 11px; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; white-space: nowrap; }
.chal-pill--cleared { border-color: var(--chal-gold); background: var(--chal-gold); color: #241b07; }
.chal-pill--live { border-color: var(--c); color: var(--c); }

.chal-card__bottom { display: flex; flex-direction: column; gap: 10px; }
.chal-tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(84px, 1fr)); gap: 6px; }
.chal-tile { display: flex; flex-direction: column; gap: 2px; min-width: 0; padding: 8px; border: 1px solid var(--chal-border-soft); border-radius: 6px; background: var(--chal-surface-2); }
.chal-tile__label { font-size: 11px; letter-spacing: 0.05em; text-transform: uppercase; color: var(--chal-mute); }
.chal-tile__value { overflow: hidden; font-size: 14px; font-weight: 700; color: var(--chal-ink); font-variant-numeric: tabular-nums; text-overflow: ellipsis; white-space: nowrap; }
.chal-tile__sub { overflow: hidden; font-size: 11px; color: var(--chal-dim); text-overflow: ellipsis; white-space: nowrap; }
.chal-tile--best .chal-tile__value { color: var(--chal-gold); }
.chal-tile--empty .chal-tile__value { color: var(--chal-mute); }

.chal-recent { border: 1px solid var(--chal-border-soft); border-radius: 6px; background: var(--chal-surface-2); }
.chal-recent > summary { display: flex; align-items: center; justify-content: space-between; padding: 8px 10px; color: var(--chal-dim); font-size: 12px; cursor: pointer; list-style: none; }
.chal-recent > summary::-webkit-details-marker { display: none; }
.chal-recent > summary::after { content: ''; width: 7px; height: 7px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(45deg) translate(-2px, -2px); }
.chal-recent[open] > summary::after { transform: rotate(-135deg); }
.chal-recent__row { display: grid; grid-template-columns: 22px 1fr auto; gap: 8px; padding: 6px 10px; border-top: 1px solid var(--chal-border-soft); font-size: 12px; font-variant-numeric: tabular-nums; }
.chal-recent__n { color: var(--chal-mute); }
.chal-recent--empty { padding: 8px 10px; color: var(--chal-mute); font-size: 12px; }
.chal-recent__days { color: var(--chal-dim); }

.chal-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.chal-start {
    flex: 1 1 140px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 40px;
    padding: 9px 14px;
    border: 1px solid color-mix(in srgb, var(--c) 65%, #0b1a13);
    border-radius: 6px;
    background: color-mix(in srgb, var(--c) 30%, #12261c);
    color: #f5f0dc;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
}
.chal-start:hover { background: color-mix(in srgb, var(--c) 44%, #12261c); }
.chal-start svg { width: 15px; height: 15px; fill: currentColor; stroke: none; }
.chal-ghost { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-height: 40px; padding: 9px 14px; border: 1px solid var(--chal-border); border-radius: 6px; background: transparent; color: var(--chal-dim); font-size: 13px; font-weight: 600; cursor: pointer; }
.chal-ghost:hover:not(:disabled) { border-color: var(--chal-gold); color: var(--chal-ink); }
.chal-ghost:disabled { opacity: 0.4; cursor: not-allowed; }
.chal-ghost svg { width: 16px; height: 16px; }

.chal-run { display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 24px 20px; border: 1px solid var(--chal-border); border-top: 3px solid var(--c); border-radius: 10px; background: linear-gradient(180deg, color-mix(in srgb, var(--c) 11%, transparent), transparent 140px), var(--chal-surface); text-align: center; }
.chal-run__name { margin: 4px 0 0; font: 600 26px/1.2 Georgia, serif; color: var(--c); }
.chal-run .chal-card__tag { margin: 0; }
.chal-run__goal { margin-top: 4px; }
.chal-timers { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin: 8px 0 6px; }
.chal-timer { display: flex; flex-direction: column; gap: 4px; min-width: 150px; padding: 12px 16px; border: 1px solid var(--chal-border-soft); border-radius: 8px; background: var(--chal-surface-2); }
.chal-timer__val { font-size: 24px; font-weight: 700; color: var(--chal-ink); font-variant-numeric: tabular-nums; }
.chal-run__btn { flex: 0 0 auto; min-width: 220px; }
.chal-abandon { min-height: 38px; padding: 9px 18px; border: 1px solid #a36b5d; border-radius: 6px; background: #482a26; color: #ffd1bd; font-size: 13px; cursor: pointer; }

.chal-lb { display: flex; flex-direction: column; gap: 12px; }
.chal-lb-head { display: flex; flex-direction: column; gap: 10px; }
.chal-lb-title { margin: 0; font: 600 20px/1.2 Georgia, serif; color: var(--c); }
.chal-lb-types { display: flex; flex-wrap: wrap; gap: 6px; }
.chal-lb-type { min-height: 32px; padding: 6px 12px; border: 1px solid var(--chal-border-soft); border-radius: 999px; background: var(--chal-surface-2); color: var(--chal-dim); font-size: 12px; font-weight: 600; cursor: pointer; }
.chal-lb-type:hover { border-color: var(--c); color: var(--chal-ink); }
.chal-lb-type.is-active { border-color: var(--c); background: color-mix(in srgb, var(--c) 22%, var(--chal-surface-2)); color: var(--chal-ink); }

.chal-lb-rewards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; padding: 12px; border: 1px solid rgba(233, 214, 163, 0.3); border-radius: 8px; background: linear-gradient(135deg, rgba(233, 214, 163, 0.09), rgba(0, 0, 0, 0.18)); }
.chal-lb-reward { display: flex; flex-direction: column; gap: 2px; padding: 8px 10px; border-radius: 6px; background: rgba(0, 0, 0, 0.2); }
.chal-lb-reward__val { font-size: 18px; font-weight: 700; color: var(--chal-gold); font-variant-numeric: tabular-nums; }
.chal-lb-note { grid-column: 1 / -1; margin: 2px 0 0; font-size: 12px; line-height: 1.55; color: var(--chal-dim); }

.chal-lb-toolbar { display: flex; flex-wrap: wrap; gap: 12px 20px; }
.chal-lb-group { display: flex; flex-direction: column; gap: 5px; }
.chal-seg { display: inline-flex; flex-wrap: wrap; gap: 3px; padding: 3px; border: 1px solid var(--chal-border-soft); border-radius: 8px; background: var(--chal-surface-2); }
.chal-seg__btn { min-height: 32px; padding: 6px 14px; border: 0; border-radius: 5px; background: transparent; color: var(--chal-dim); font-size: 12px; font-weight: 600; cursor: pointer; }
.chal-seg__btn:hover { color: var(--chal-ink); }
.chal-seg__btn.is-active { background: #36553e; color: #f6e4b6; box-shadow: inset 0 -2px #cfb377; }
.chal-lb-season { display: inline-flex; align-items: center; min-height: 38px; color: var(--chal-ink); font-size: 14px; font-weight: 600; }

.chal-lb-mark { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; padding: 10px 14px; border: 1px solid color-mix(in srgb, var(--c) 45%, transparent); border-left: 3px solid var(--c); border-radius: 8px; background: color-mix(in srgb, var(--c) 10%, var(--chal-surface-2)); }
.chal-lb-mark__rank { font-size: 20px; font-weight: 800; color: var(--c); font-variant-numeric: tabular-nums; }
.chal-lb-mark__score { font-size: 15px; font-weight: 700; color: var(--chal-ink); font-variant-numeric: tabular-nums; }
.chal-lb-mark--none { border-left-color: var(--chal-border); border-color: var(--chal-border-soft); background: var(--chal-surface-2); color: var(--chal-dim); font-size: 13px; }

.chal-lb-table { display: flex; flex-direction: column; border: 1px solid var(--chal-border-soft); border-radius: 8px; overflow: hidden; }
.chal-lb-row { display: grid; grid-template-columns: 52px minmax(0, 1fr) minmax(90px, auto) minmax(70px, auto) minmax(80px, auto); align-items: center; gap: 10px; padding: 9px 12px; font-size: 13px; border-top: 1px solid var(--chal-border-soft); }
.chal-lb-row:first-child { border-top: 0; }
.chal-lb-row:nth-child(even) { background: rgba(0, 0, 0, 0.14); }
.chal-lb-row--head { background: var(--chal-surface-2); color: var(--chal-mute); font-size: 11px; letter-spacing: 0.05em; text-transform: uppercase; }
.chal-lb-rank { justify-self: start; min-width: 30px; padding: 2px 8px; border-radius: 999px; background: var(--chal-surface-2); color: var(--chal-dim); font-weight: 700; text-align: center; font-variant-numeric: tabular-nums; }
.chal-lb-row--p1 .chal-lb-rank { background: #e9c766; color: #2a1f05; }
.chal-lb-row--p2 .chal-lb-rank { background: #c9d3d6; color: #1e2629; }
.chal-lb-row--p3 .chal-lb-rank { background: #c98c5a; color: #2a1606; }
.chal-lb-name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chal-lb-num { text-align: right; font-weight: 700; font-variant-numeric: tabular-nums; }
.chal-lb-meta { text-align: right; color: var(--chal-mute); font-size: 12px; font-variant-numeric: tabular-nums; }
.chal-lb-row--head .chal-lb-meta { font-size: 11px; }

.chal-lb-state { display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 28px 18px; border: 1px dashed var(--chal-border); border-radius: 8px; background: var(--chal-surface-2); color: var(--chal-dim); font-size: 13px; line-height: 1.6; text-align: center; }
.chal-lb-state svg { width: 28px; height: 28px; color: var(--chal-gold); }
.chal-lb-state strong { color: var(--chal-ink); font-size: 14px; }

.chal-lb-pager { display: flex; align-items: center; justify-content: center; gap: 12px; }
.chal-lb-page { min-width: 70px; color: var(--chal-dim); font-size: 13px; text-align: center; }

@media (max-width: 560px) {
    .chal-wrap { padding: 10px; }
    .chal-grid { grid-template-columns: minmax(0, 1fr); }
    .chal-lb-rewards { grid-template-columns: minmax(0, 1fr); }
    .chal-lb-row { grid-template-columns: 44px minmax(0, 1fr) auto; }
    .chal-lb-row .chal-lb-meta { display: none; }
    .chal-timer { min-width: 0; flex: 1 1 130px; }
}