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42%,var(--color-divider));border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:transform .16s cubic-bezier(.23,1,.32,1),border-color .16s ease,background-color .16s ease}.reader-challenge-card:hover{transform:translateY(-1px);border-color:var(--color-accent);background:color-mix(in srgb,var(--color-accent-100) 38%,var(--color-bg))}.reader-challenge-card:active{transform:scale(.985)}.challenge-level{grid-row:1;display:inline-flex;align-items:center;width:fit-content;padding:2px 5px;border-radius:var(--radius-sm);font:10px var(--font-num);letter-spacing:.06em;text-transform:uppercase;background:color-mix(in srgb,var(--color-text) 8%,transparent);color:color-mix(in srgb,var(--color-text) 72%,transparent)}.challenge-level.is-challenging{background:color-mix(in srgb,var(--color-accent) 18%,transparent);color:var(--color-accent-800)}.challenge-level.is-stretch{background:color-mix(in srgb,var(--status-danger) 15%,transparent);color:var(--status-danger)}.reader-challenge-card strong{min-width:0;font-family:var(--font-heading);font-size:15px;line-height:1.1}.reader-challenge-card .num{grid-column:1 / -1;font-size:11px}.challenge-reason{grid-column:1 / -1;font-size:12px;line-height:1.32;color:color-mix(in srgb,var(--color-text) 72%,transparent)}.challenge-go{grid-column:1 / -1;margin-top:2px;font:11px var(--font-num);color:var(--color-accent-800)}.reader-challenge-empty{max-width:1180px;margin:0 auto;padding:8px 10px;color:color-mix(in srgb,var(--color-text) 70%,transparent);background:var(--color-bg);border:1px dashed var(--color-divider);border-radius:var(--radius-md);font-size:12.5px}.reader-question-map{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1600;display:grid;grid-template-rows:auto minmax(0,1fr);gap:12px;padding:clamp(14px,2.5vw,28px);overflow:hidden;background:color-mix(in srgb,var(--color-bg) 97%,transparent);-webkit-backdrop-filter:blur(9px);backdrop-filter:blur(9px)}.reader-question-map .reader-challenge-head{width:min(1180px,100%);margin:0 auto;padding:0 2px}.reader-question-map-actions{display:flex;align-items:center;gap:7px;flex:none}.reader-question-map-actions .btn{white-space:nowrap}.reader-question-map .kick{display:flex;align-items:center;gap:5px;color:var(--color-accent-800)}.reader-question-map-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));align-content:start;gap:8px;width:min(1180px,100%);min-height:0;margin:0 auto;padding:2px 8px 18px 2px;overflow-y:auto;overscroll-behavior:contain;scrollbar-gutter:stable}.reader-question-map-card{min-width:0;display:flex;flex-direction:column;align-items:stretch;gap:8px;padding:10px 11px;text-align:left;color:var(--color-text);background:var(--color-bg);border:1px solid var(--color-divider);border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}.question-map-primary{display:flex;flex-direction:column;align-items:flex-start;gap:7px;width:100%;padding:0;color:inherit;background:transparent;border:0;text-align:left;cursor:pointer;transition:transform .16s cubic-bezier(.23,1,.32,1),color .16s ease}.question-map-primary:not(:disabled):hover{color:var(--color-accent-800)}.question-map-primary:active:not(:disabled){transform:scale(.985)}.question-map-primary:disabled{cursor:default;opacity:.72}.question-map-primary:focus-visible,.question-map-subpart:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px}.question-map-title{display:flex;align-items:baseline;flex-wrap:wrap;gap:4px 7px}.question-map-title strong{font-family:var(--font-heading);font-size:15px;line-height:1.1}.question-map-title .num{font-size:11px}.question-topic-tags{display:flex;flex-wrap:wrap;gap:4px}.question-topic-tags>span{padding:2px 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