.mc-page .mcq{--mcq-ink:#193e68;--mcq-muted:#607e9b;color:var(--mcq-ink);min-width:0;font-family:'Microsoft YaHei','PingFang SC',sans-serif}
.mc-page .mcq [hidden]{display:none!important}
.mc-page .mcq-sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.mc-page .mcq button,.mc-page .mcq input{font:inherit}
.mc-page .mcq button:focus-visible,.mc-page .mcq input:focus-visible{outline:3px solid #73a9ed;outline-offset:4px}
.mc-page .mcq-heading{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:25px}
.mc-page .mcq-heading h2{font:600 30px/1.45 'STSong','Songti SC','SimSun',serif;letter-spacing:2px;margin:0 0 8px;color:var(--mcq-ink)}
.mc-page .mcq-heading p{font-size:12px;line-height:1.9;color:var(--mcq-muted);margin:0}
.mc-page .mcq-search{display:flex;align-items:center;flex:none;gap:4px;padding:4px 5px 4px 12px;max-width:100%;width:300px;min-height:44px;border:1px solid #c5d9f0;border-radius:9px;background:#fff}
.mc-page .mcq-search input{width:100%;min-width:0;border:0;padding:7px 0;background:transparent;color:#2c527b;font-size:12px;line-height:1.7}
.mc-page .mcq-search input::placeholder{color:#7390ac}
.mc-page .mcq-search button{flex:none;border:0;border-radius:6px;background:#edf5ff;padding:7px 10px;color:#336aa9;font-size:12px;min-height:34px;line-height:1.5}
.mc-page .mcq-search [data-mcq-clear-search]{font-size:20px;padding:2px 8px;background:transparent}
.mc-page .mcq-toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:15px}
.mc-page .mcq-filters{display:flex;gap:7px;flex-wrap:wrap}
.mc-page .mcq-filters button{display:flex;align-items:center;gap:7px;min-height:36px;padding:7px 11px;border-radius:7px;border:1px solid #d7e4f5;background:#ffffffad;color:#587796;font-size:12px;line-height:1.5;white-space:nowrap}
.mc-page .mcq-filters button>span{font-size:11px;color:#728ba7;font-variant-numeric:tabular-nums}
.mc-page .mcq-filters button[aria-pressed=true]{color:#1f62c9;border-color:#93baf1;background:#eaf3ff}
.mc-page .mcq-filters button[aria-pressed=true]>span{color:#437bbf}
.mc-page .mcq-clear-selection{flex:none;font-size:12px;min-height:36px;border:1px solid #c8dcf5;border-radius:7px;padding:7px 12px;background:#fff;color:#3f70ac}
.mc-page .mcq-summary{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:11px;line-height:1.8;color:#6c88a7;margin:0 2px 16px}
.mc-page .mcq-summary>span:first-child{color:#456a94}
.mc-page .mcq-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,4vw,58px);padding:25px 26px 32px;border:1px solid #e1ebf7;border-radius:16px;background:radial-gradient(circle,#b9cfea73 .8px,transparent 1px) 0 0/18px 18px,linear-gradient(135deg,#f8fbff,#eff6ff);min-height:490px;align-items:start}
.mc-page .mcq-column{--mcq-tone:#4568b0;min-width:0}
.mc-page .mcq-concept{--mcq-tone:#236ebf}
.mc-page .mcq-method{--mcq-tone:#137f92}
.mc-page .mcq-column>header{margin:0 0 20px;min-height:55px}
.mc-page .mcq-column h3{font-size:15px;font-weight:600;line-height:1.7;margin:0 0 5px;color:#21466e}
.mc-page .mcq-column h3>span{font:12px/1.5 Georgia,serif;display:inline-block;vertical-align:1px;color:#567999;margin-left:8px;border:1px solid #d2e1f0;border-radius:20px;padding:0 7px;background:#ffffffa8}
.mc-page .mcq-column>header p{font-size:11px;line-height:1.8;color:#66829f;margin:0;max-width:26em}
.mc-page .mcq-question-list{display:flex;flex-direction:column;gap:13px}
.mc-page .mcq-question{position:relative;display:flex;flex-direction:column;align-items:stretch;gap:12px;width:100%;padding:15px 16px 10px;min-height:105px;border:1px solid transparent;border-radius:11px;text-align:left;background:var(--mcq-tone);color:#fff;box-shadow:0 4px 12px #365f8d10;transition:background-color .18s,color .18s,box-shadow .18s,border-color .18s}
.mc-page .mcq-question-text{font-size:13px;line-height:1.85;font-weight:500;overflow-wrap:anywhere}
.mc-page .mcq-question-meta{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:auto;font-size:11px;line-height:1.6;color:#fff}
.mc-page .mcq-count{display:inline-flex;align-items:center;gap:2px;font-size:11px;border-radius:20px;padding:0 7px;background:#ffffff18;border:1px solid #ffffff45;white-space:nowrap}
.mc-page .mcq-question:hover{box-shadow:0 0 0 3px #7ea7d423,0 5px 15px #335e8d1b}
.mc-page .mcq-question[aria-pressed=true]{outline:2px solid var(--mcq-tone);outline-offset:4px;box-shadow:0 7px 17px #365f8d24}
.mc-page .mcq-question[aria-pressed=true]:focus-visible{outline:3px solid #163d70;outline-offset:5px}
.mc-page .mcq-question.is-related{box-shadow:0 0 0 2px #fff,0 0 0 3px #90b5dc}
.mc-page .mcq-question.is-unrelated{background:#eef4fb;color:#506c8c;border-color:#d1e0f2;box-shadow:none}
.mc-page .mcq-question.is-unrelated .mcq-question-meta{color:#5d7896}
.mc-page .mcq-question.is-unrelated .mcq-count{border-color:#ccdbed;background:#fff}
.mc-page .mcq-no-level{padding:22px 10px;border:1px dashed #cbdcf1;border-radius:9px;text-align:center;font-size:12px;line-height:1.9;color:#6f89a5;background:#ffffffb3;margin:0}
.mc-page .mcq-note{font-size:11px;line-height:1.9;color:#6e87a3;margin:15px 2px 0}
@media(max-width:1100px){.mc-page .mcq-heading{gap:18px;align-items:flex-start}.mc-page .mcq-search{width:260px}.mc-page .mcq-columns{gap:22px;padding:23px 21px 28px}.mc-page .mcq-question{padding:13px 12px 9px}.mc-page .mcq-question-text{font-size:12px}}
@media(max-width:780px){.mc-page .mcq-heading{flex-wrap:wrap;gap:16px}.mc-page .mcq-search{width:100%}.mc-page .mcq-columns{gap:15px;padding:20px 15px 25px}.mc-page .mcq-column>header{min-height:76px}.mc-page .mcq-column h3{font-size:13px}.mc-page .mcq-question{padding:12px 10px 9px}.mc-page .mcq-question-text{font-size:12px}.mc-page .mcq-toolbar{align-items:flex-start}.mc-page .mcq-clear-selection{font-size:11px;padding:7px 9px}}
@media(max-width:620px){.mc-page .mcq-heading h2{font-size:27px}.mc-page .mcq-columns{grid-template-columns:minmax(0,1fr);gap:30px;padding:22px 18px 28px}.mc-page .mcq-column>header{min-height:0;margin-bottom:15px}.mc-page .mcq-column h3{font-size:16px}.mc-page .mcq-column>header p{max-width:none}.mc-page .mcq-question{min-height:94px;padding:14px 15px 10px}.mc-page .mcq-question-text{font-size:13px}.mc-page .mcq-toolbar{display:block}.mc-page .mcq-clear-selection{margin-top:10px}.mc-page .mcq-filters{gap:6px}.mc-page .mcq-filters button{padding:8px 10px;min-height:39px}.mc-page .mcq-note{font-size:11px}}
@media(prefers-reduced-motion:reduce){.mc-page .mcq-question{transition:none}}