/* 首页「应用窗口」示意图：纯 HTML + CSS 照桌面端真实界面搭的假截图，class 一律 mk- 前缀。
   结构：.mock（外框，负责圆角 / 边框 / 投影 / 等比缩放容器；边框与投影走 site.css 的 --ill-border / --shadow）
        > .mock-stage（固定设计宽度 1040 排版，整体 scale）。
   示意图本身是一张「浅色软件截图」：内部颜色写死，深色网页下也保持浅色。 */

/* ===== 缩放框架 ===== */
.mock {
    position: relative;
    container-type: inline-size;
    overflow: hidden;
    box-sizing: border-box;
    border-radius: 14px;
    border: 1px solid var(--ill-border);
    box-shadow: 0 24px 60px -24px var(--shadow);
    background: #eef1f6;
    color-scheme: light;
}

.mock-stage {
    --mk-blue: #3b82f6;
    --mk-blue-d: #2563eb;
    --mk-ink: #0f172a;
    --mk-text: #1e293b;
    --mk-mute: #64748b;
    --mk-faint: #94a3b8;
    --mk-line: #e6eaf1;
    --mk-soft: #eef2fb;
    --mk-serif: "Times New Roman", "Songti SC", "STSong", SimSun, "Noto Serif CJK SC", serif;
    position: absolute;
    left: 0;
    top: 0;
    width: 1040px;
    overflow: hidden;
    transform-origin: top left;
    transform: scale(1);
    transform: scale(calc(100cqw / 1040px));
    pointer-events: none;
    user-select: none;
    -webkit-user-select: none;
    font: 13px/1.5 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
    font-synthesis: none;
    letter-spacing: 0;
    text-align: left;
    color: var(--mk-text);
    color-scheme: light;
    background:
        radial-gradient(760px 420px at 34% -4%, #e1eaff 0%, rgba(225, 234, 255, 0) 70%),
        radial-gradient(560px 460px at 12% 104%, #fdece3 0%, rgba(253, 236, 227, 0) 70%),
        radial-gradient(620px 440px at 104% 104%, #e0f5ec 0%, rgba(224, 245, 236, 0) 70%),
        #eef1f6;
}
.mock-stage *,
.mock-stage *::before,
.mock-stage *::after { box-sizing: border-box; }

.mock-hero-bank, .mock-details, .mock-paper-editor { aspect-ratio: 1040 / 650; }
.mock-editor { aspect-ratio: 1040 / 620; }
.mock-teach { aspect-ratio: 1040 / 585; }
.mock-hero-bank .mock-stage, .mock-details .mock-stage, .mock-paper-editor .mock-stage { height: 650px; }
.mock-editor .mock-stage { height: 620px; }
.mock-teach .mock-stage { height: 585px; }

/* ===== 通用小件 ===== */
.mk-i { width: 18px; height: 18px; flex: none; }
.mk-sp { flex: 1; min-width: 0; }
.mk-nw { white-space: nowrap; }
.mock-stage i { font-style: italic; font-family: var(--mk-serif); }
.mock-stage sub, .mock-stage sup { font-size: 0.72em; line-height: 0; }
.mk-serif { font-family: var(--mk-serif); }

.mk-app { position: absolute; inset: 0; display: flex; gap: 12px; padding: 12px; }
.mk-main { position: relative; flex: 1; min-width: 0; overflow: hidden; display: flex; flex-direction: column; padding: 10px 6px 0 8px; }

/* 侧栏：独立的白色圆角卡片 */
.mk-side {
    width: 208px; flex: none; display: flex; flex-direction: column; padding: 20px 10px 0;
    background: #fff; border: 1px solid #e6eaf1; border-radius: 16px; box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}
.mk-brand { display: flex; align-items: center; gap: 10px; padding: 0 4px 22px; }
.mk-logo { width: 40px; height: 40px; flex: none; }
.mk-brand b { display: block; font-size: 19px; line-height: 1.2; font-weight: 700; color: var(--mk-ink); letter-spacing: 0.01em; }
.mk-brand small { display: block; margin-top: 2px; font-size: 11px; color: var(--mk-mute); }
.mk-nav-i { display: flex; align-items: center; gap: 12px; height: 40px; margin-bottom: 6px; padding: 0 14px; border-radius: 10px; font-size: 14.5px; color: var(--mk-text); }
.mk-nav-i .mk-i { color: #475569; }
.mk-nav-i.is-on { background: #e3eaf8; color: var(--mk-blue-d); font-weight: 600; }
.mk-nav-i.is-on .mk-i { color: var(--mk-blue-d); }
.mk-nav-i.is-off, .mk-nav-i.is-off .mk-i { color: #a3adbd; }
.mk-side-foot { margin-top: auto; margin-left: -10px; margin-right: -10px; }
.mk-guide { display: flex; align-items: center; gap: 10px; padding: 0 28px 14px; font-size: 12.5px; color: var(--mk-mute); }
.mk-guide .mk-i { width: 16px; height: 16px; }
.mk-user { display: flex; align-items: center; gap: 12px; padding: 14px 18px; border-top: 1px solid #edf0f5; }
.mk-av { width: 40px; height: 40px; border-radius: 50%; flex: none; display: flex; align-items: center; justify-content: center; background: #e4ebfa; color: var(--mk-blue-d); font-weight: 700; font-size: 15px; }
.mk-user b { display: block; font-size: 14px; line-height: 1.3; color: var(--mk-ink); }
.mk-user small { display: block; font-size: 11.5px; color: var(--mk-mute); }

/* 标题 / 按钮 / 胶囊 */
.mk-title { font-size: 28px; line-height: 1.2; font-weight: 700; letter-spacing: 0.02em; color: var(--mk-ink); white-space: nowrap; flex: none; }
.mk-pill {
    display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 14px; flex: none;
    background: #fff; border: 1px solid #e3e8f0; border-radius: 20px; box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
    font-weight: 700; font-size: 13.5px; white-space: nowrap; color: var(--mk-ink);
}
.mk-pill .mk-i { width: 16px; height: 16px; color: var(--mk-blue-d); }
.mk-pill .mk-chev { width: 15px; height: 15px; color: #64748b; }
.mk-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 40px; padding: 0 20px; flex: none;
    border-radius: 20px; font-weight: 600; font-size: 14px; white-space: nowrap;
}
.mk-btn .mk-i { width: 16px; height: 16px; }
.mk-btn-pri { background: var(--mk-blue); color: #fff; box-shadow: 0 6px 14px -7px rgba(59, 130, 246, 0.8); }
.mk-btn-soft { background: #e6edfc; color: #3b6fd8; }
.mk-btn-line { background: #fff; border: 1px solid #d8deea; color: var(--mk-ink); }
.mk-btn-gray { background: #e3e8f0; color: #98a3b5; }
.mk-btn-s { height: 36px; padding: 0 16px; font-size: 13px; border-radius: 18px; }
.mk-circ { position: relative; width: 40px; height: 40px; border-radius: 50%; flex: none; display: inline-flex; align-items: center; justify-content: center; background: #fff; border: 1px solid #e3e8f0; color: var(--mk-ink); box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04); }
.mk-circ .mk-i { width: 17px; height: 17px; }
.mk-bdg { position: absolute; top: -4px; right: -4px; min-width: 18px; height: 18px; padding: 0 4px; border-radius: 9px; background: #ef4444; border: 2px solid #f1f4fb; color: #fff; font-size: 10.5px; font-weight: 700; line-height: 14px; text-align: center; }

.mk-tag { display: inline-flex; align-items: center; height: 22px; padding: 0 9px; border-radius: 11px; font-size: 12px; font-weight: 600; white-space: nowrap; background: #e9edf3; color: #64748b; }
.mk-t-type { background: #e6edfd; color: #2f5fd0; }
.mk-t-pts { background: #e6e9ef; color: #64748b; font-weight: 500; }
.mk-t-sub { background: #dfe8fb; color: #2f5fd0; }
.mk-t-warn { background: #ffe9cf; color: #b45309; }
.mk-d1 { background: #dcf5e6; color: #15803d; }
.mk-d2 { background: #d6f3f6; color: #0e7490; }
.mk-d3 { background: #e3ebff; color: #1d4ed8; }
.mk-d4 { background: #ffecd8; color: #c2410c; }
.mk-d5 { background: #fde3e3; color: #b91c1c; }
.mk-c1 { color: #15803d; }
.mk-c2 { color: #0e7490; }
.mk-c3 { color: #1d4ed8; }
.mk-c4 { color: #c2410c; }
.mk-c5 { color: #b91c1c; }

.mk-chk { width: 18px; height: 18px; flex: none; border-radius: 5px; border: 1.5px solid #cbd3e0; background: #f3f5f9; display: inline-flex; align-items: center; justify-content: center; color: #fff; }
.mk-chk .mk-i { width: 12px; height: 12px; stroke-width: 2.6; }
.mk-chk.is-on { background: var(--mk-blue); border-color: var(--mk-blue); }
.mk-dots { color: #94a3b8; font-size: 15px; font-weight: 700; letter-spacing: 1px; line-height: 1; }
.mk-par { margin-left: auto; padding-left: 16px; white-space: pre; font-family: var(--mk-serif); }

/* ===== 题库中心 ===== */
.mk-head { display: flex; align-items: center; gap: 10px; height: 44px; margin-bottom: 14px; }
.mk-head .mk-title { margin-right: 4px; }
.mk-search { display: flex; align-items: center; gap: 12px; height: 40px; padding: 0 14px 0 16px; margin-bottom: 12px; border-radius: 20px; background: #fff; border: 1px solid #e8ecf3; box-shadow: 0 2px 8px -4px rgba(15, 23, 42, 0.12); color: #8a95a8; font-size: 13px; }
.mk-search .mk-i { width: 17px; height: 17px; color: var(--mk-ink); }
.mk-search .mk-sp { color: #8a95a8; }
.mk-key { width: 22px; height: 22px; border-radius: 6px; background: #eef1f6; border: 1px solid #dfe4ec; display: inline-flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 600; color: #64748b; }
.mk-key + .mk-key { margin-left: 4px; }
.mk-filters { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.mk-filt { display: inline-flex; align-items: center; gap: 7px; height: 36px; padding: 0 12px 0 14px; border-radius: 18px; background: #fff; border: 1px solid #e8ecf3; font-size: 12.5px; color: #64748b; white-space: nowrap; box-shadow: 0 1px 2px rgba(15, 23, 42, 0.03); }
.mk-filt .mk-i { width: 15px; height: 15px; }
.mk-filt b { color: var(--mk-ink); font-weight: 700; }
.mk-filt .mk-chev { width: 14px; height: 14px; color: #94a3b8; margin-left: 4px; }
.mk-view { display: inline-flex; align-items: center; padding: 2px; border-radius: 18px; background: #edf0f6; }
.mk-view span { width: 32px; height: 32px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; color: #94a3b8; }
.mk-view span.is-on { background: var(--mk-blue); color: #fff; }
.mk-view .mk-i { width: 15px; height: 15px; }
.mk-count { display: flex; align-items: center; gap: 12px; height: 24px; margin-bottom: 10px; padding-left: 4px; font-size: 13px; color: var(--mk-text); }
.mk-count .mk-chk { width: 20px; height: 20px; }

.mk-list { display: flex; flex-direction: column; gap: 10px; }
.mk-q { position: relative; padding: 12px 18px 10px 16px; border-radius: 14px; background: #fff; border: 1px solid #e9edf4; box-shadow: 0 2px 8px -6px rgba(15, 23, 42, 0.2); }
.mk-q.is-sel { border-color: var(--mk-blue); box-shadow: 0 0 0 1px var(--mk-blue), 0 2px 8px -6px rgba(15, 23, 42, 0.2); }
.mk-q-top { display: flex; align-items: center; gap: 10px; height: 24px; }
.mk-q-top .mk-sp { flex: 1; }
.mk-stem { display: flex; align-items: baseline; margin-top: 6px; font-family: var(--mk-serif); font-size: 16px; line-height: 26px; color: var(--mk-ink); }
.mk-stem .mk-st { flex: 0 1 auto; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mk-meta { display: flex; justify-content: flex-end; margin-top: 2px; height: 16px; font-size: 11.5px; line-height: 16px; color: #8a95a8; }

/* ===== 对话框（遮罩 + 居中） ===== */
.mk-mask { position: absolute; inset: 0; z-index: 5; background: rgba(15, 23, 42, 0.42); }
.mk-dlg { position: absolute; z-index: 6; display: flex; flex-direction: column; overflow: hidden; background: #fff; border-radius: 16px; box-shadow: 0 28px 70px -14px rgba(15, 23, 42, 0.5), 0 2px 8px rgba(15, 23, 42, 0.12); }
.mk-dlg-h { position: relative; flex: none; padding: 16px 56px 12px 24px; border-bottom: 1px solid #eef1f5; }
.mk-dlg-h b { display: block; font-size: 19px; line-height: 1.3; font-weight: 700; color: var(--mk-ink); }
.mk-dlg-h small { display: block; margin-top: 3px; font-size: 13px; color: var(--mk-mute); }
.mk-dlg-x { position: absolute; right: 18px; top: 16px; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #64748b; }
.mk-dlg-x .mk-i { width: 17px; height: 17px; }
.mk-dlg-f { flex: none; display: flex; align-items: center; gap: 10px; padding: 12px 24px; border-top: 1px solid #eef1f5; background: #fff; }
.mk-dlg-f .mk-faint { font-size: 13px; color: #8a95a8; }
.mk-dlg-f .mk-btn { height: 38px; padding: 0 22px; }

/* 试题篮 */
.mk-dlg-basket { left: 200px; top: 96px; width: 640px; }
.mk-bk-body { padding: 14px 24px 6px; }
.mk-bk-types { display: flex; gap: 8px; margin-bottom: 10px; }
.mk-chip { display: inline-flex; align-items: center; height: 30px; padding: 0 14px; border-radius: 15px; background: #fff; border: 1px solid #dfe5ee; font-size: 12.5px; color: var(--mk-text); white-space: nowrap; }
.mk-chip b { font-weight: 700; margin-right: 5px; }
.mk-chip.is-on { background: var(--mk-blue); border-color: var(--mk-blue); color: #fff; font-weight: 600; }
.mk-bk-sum { margin-bottom: 8px; font-size: 12.5px; color: var(--mk-mute); }
.mk-bk-sum b { color: var(--mk-ink); font-weight: 700; }
.mk-bk-list { display: flex; flex-direction: column; gap: 8px; }
.mk-bk-row { display: flex; align-items: center; gap: 6px; height: 46px; padding: 0 14px 0 12px; border-radius: 10px; background: #f6f8fb; border: 1px solid #edf0f5; }
.mk-bk-row .mk-tag { height: 22px; padding: 0 8px; font-size: 11.5px; }
.mk-bk-row .mk-st { flex: 1; min-width: 0; margin-left: 6px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-family: var(--mk-serif); font-size: 14.5px; color: var(--mk-ink); }
.mk-bk-row .mk-rm { flex: none; margin-left: 10px; font-size: 12.5px; color: #64748b; }

/* 疑似重复 */
.mk-dlg-dup { left: 210px; top: 150px; width: 620px; }
.mk-dup-body { padding: 16px 24px 4px; }
.mk-dup-body p { margin: 0 0 12px; font-size: 13.5px; line-height: 1.6; color: #475569; }
.mk-dup-hit { display: flex; align-items: center; gap: 14px; margin-bottom: 10px; padding: 12px 14px; border-radius: 12px; background: #fffaf2; border: 1px solid #f6e3c6; }
.mk-dup-hit .mk-tag { flex: none; height: 24px; padding: 0 10px; }
.mk-dup-hit .mk-st { font-family: var(--mk-serif); font-size: 14.5px; line-height: 1.5; color: var(--mk-ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mk-dup-hit small { display: block; margin-top: 2px; font-size: 11.5px; color: #8a95a8; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.mk-dup-hit > div { flex: 1; min-width: 0; }
.mk-dup-note { margin-top: 12px; font-size: 12px; color: #8a95a8; }
.mk-dlg-dup .mk-dlg-f { margin-top: 12px; justify-content: flex-end; }

/* 题目详情 */
.mk-dlg-detail { left: 90px; top: 14px; width: 860px; height: 622px; }
.mk-dt-body { position: relative; flex: 1; min-height: 0; overflow: hidden; padding: 12px 28px 0; }
.mk-dt-chips { display: flex; gap: 8px; margin-bottom: 9px; }
.mk-dt-chips .mk-tag { height: 24px; padding: 0 11px; }
.mk-dt-sec { margin: 0 0 6px; font-size: 16px; font-weight: 700; color: var(--mk-ink); }
.mk-dt-row { display: flex; align-items: baseline; gap: 14px; margin-bottom: 4px; }
.mk-dt-lab { width: 42px; flex: none; font-size: 12.5px; font-weight: 700; color: #475569; }
.mk-dt-val { flex: 1; min-width: 0; font-family: var(--mk-serif); font-size: 15.5px; line-height: 1.6; color: var(--mk-ink); }
.mk-dt-opts { display: grid; grid-template-columns: repeat(4, auto); justify-content: start; gap: 4px 36px; }
.mk-dt-opts b { font-family: var(--mk-serif); margin-right: 6px; }
.mk-ans { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 26px; border-radius: 7px; background: #dcf5e6; border: 1px solid #b7e5c9; color: #15803d; font-weight: 700; font-size: 14px; font-family: var(--mk-serif); }
.mk-dt-sep { height: 1px; margin: 7px 0 8px; background: #edf0f5; }
.mk-dt-hint { margin-left: 10px; font-size: 12px; font-weight: 400; color: #8a95a8; }
.mk-dt-bank { display: flex; align-items: center; gap: 22px; height: 26px; margin-bottom: 0; font-size: 13px; }
.mk-dt-bank span { display: inline-flex; align-items: center; gap: 8px; }
.mk-dt-ver { display: flex; align-items: center; gap: 10px; height: 22px; font-size: 13px; color: var(--mk-text); }
.mk-dt-ver .mk-tag { height: 20px; font-size: 11px; padding: 0 8px; }
.mk-dt-ver small { color: #8a95a8; font-size: 12px; }
.mk-dt-sech { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.mk-dt-sech .mk-dt-sec { margin: 0; }
.mk-btn-ghost { height: 30px; padding: 0 14px; gap: 6px; border-radius: 15px; background: #fff; border: 1px solid #d8deea; color: var(--mk-text); font-weight: 500; font-size: 12.5px; }
.mk-btn-ghost .mk-i { width: 14px; height: 14px; }
.mk-dt-var { display: flex; align-items: center; gap: 10px; padding: 7px 12px; margin-bottom: 7px; border-radius: 10px; background: #f6f8fb; border: 1px solid #edf0f5; }
.mk-dt-var .mk-st { flex: 1; min-width: 0; font-family: var(--mk-serif); font-size: 14.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--mk-ink); }
.mk-dt-var small { flex: none; font-size: 11.5px; color: #8a95a8; }
.mk-fade { position: absolute; left: 0; right: 0; bottom: 0; height: 40px; background: linear-gradient(to bottom, rgba(255, 255, 255, 0), #fff 88%); }
.mk-dlg-detail .mk-dlg-f { justify-content: center; gap: 14px; padding: 9px 24px; }
.mk-dlg-detail .mk-dlg-f .mk-btn-txt { font-size: 14px; font-weight: 500; color: var(--mk-text); padding: 0 14px; }

/* ===== 题目编辑 ===== */
.mk-bar { display: flex; align-items: center; gap: 10px; height: 56px; flex: none; margin-bottom: 12px; padding: 0 14px 0 18px; border-radius: 16px; background: #fff; border: 1px solid #e6eaf1; }
.mk-bar .mk-title { font-size: 22px; margin-right: 4px; }
.mk-seg { display: inline-flex; padding: 4px; gap: 2px; border-radius: 22px; background: #edf0f6; border: 1px solid #e3e8f0; }
.mk-seg span { height: 30px; line-height: 30px; padding: 0 10px; border-radius: 15px; font-size: 12.5px; font-weight: 600; color: #a3adbd; white-space: nowrap; }
.mk-seg span.is-mid { color: #4b5870; }
.mk-seg span.is-on { background: var(--mk-blue); color: #fff; box-shadow: 0 3px 8px -3px rgba(59, 130, 246, 0.7); }
.mk-bar .mk-btn { height: 36px; padding: 0 12px; font-size: 13px; gap: 6px; }
.mk-bar .mk-btn .mk-chev { width: 14px; height: 14px; }
.mk-bar .mk-circ { width: 36px; height: 36px; background: #fff; color: #9aa5b5; }
.mk-ed-cols { flex: 1; min-height: 0; display: flex; gap: 12px; }
.mk-card { background: #fff; border: 1px solid #e6eaf1; border-radius: 16px; }
.mk-ed-card { flex: 1; min-width: 0; display: flex; flex-direction: column; padding: 4px 16px 16px; }
.mk-tabs { display: flex; gap: 30px; height: 44px; padding: 0 14px; flex: none; }
.mk-tabs span { position: relative; height: 44px; line-height: 44px; font-size: 15px; color: #475569; }
.mk-tabs span.is-on { color: var(--mk-blue-d); font-weight: 600; }
.mk-tabs span.is-on::after { content: ""; position: absolute; left: 0; right: 0; bottom: 3px; height: 2px; border-radius: 1px; background: var(--mk-blue-d); }
.mk-ebox { flex: 1; min-height: 0; display: flex; flex-direction: column; border-radius: 12px; border: 1px solid #e9edf4; background: #fff; overflow: hidden; }
.mk-tools { display: flex; align-items: center; gap: 2px; height: 42px; flex: none; padding: 0 12px; background: #f6f8fb; border-bottom: 1px solid #e9edf4; color: #475569; }
.mk-tools .mk-i { width: 17px; height: 17px; margin: 0 9px; }
.mk-tools .mk-chev { width: 13px; height: 13px; margin: 0 6px 0 -4px; }
.mk-tsep { width: 1px; height: 18px; margin: 0 4px; background: #dfe4ec; }
.mk-etext { flex: 1; padding: 22px 24px; font-family: var(--mk-serif); font-size: 19px; line-height: 1.95; color: var(--mk-ink); }
.mk-caret { display: inline-block; width: 2px; height: 22px; margin-left: 2px; vertical-align: text-bottom; background: var(--mk-blue-d); }
.mk-efoot { flex: none; display: flex; align-items: center; gap: 22px; height: 38px; padding: 0 20px; border-top: 1px solid #e9edf4; font-size: 12.5px; color: #64748b; }
.mk-efoot .mk-i { width: 16px; height: 16px; }
.mk-info { width: 262px; flex: none; padding: 0; }
.mk-info-t { height: 52px; line-height: 52px; padding: 0 20px; font-size: 16px; font-weight: 700; color: var(--mk-ink); border-bottom: 1px solid #eef1f5; }
.mk-fld { padding: 16px 20px 0; }
.mk-fld h4 { display: flex; align-items: center; justify-content: space-between; margin: 0 0 10px; font-size: 14px; font-weight: 700; color: var(--mk-ink); }
.mk-fld h4 .mk-i { width: 17px; height: 17px; color: var(--mk-blue-d); }
.mk-diffs { display: flex; gap: 5px; }
.mk-diffs span { flex: 1; height: 30px; line-height: 28px; border-radius: 15px; text-align: center; font-size: 12px; font-weight: 700; border: 1.5px solid transparent; }
.mk-diffs span.is-on { border-color: #1d4ed8; }
.mk-kps { display: flex; flex-wrap: wrap; gap: 8px; }
.mk-kp { display: inline-flex; align-items: center; gap: 6px; height: 28px; padding: 0 10px 0 13px; border-radius: 14px; background: #e6edfd; color: #2f5fd0; font-size: 12.5px; font-weight: 600; }
.mk-kp .mk-i { width: 12px; height: 12px; stroke-width: 2; }
.mk-input { display: flex; align-items: center; height: 38px; padding: 0 16px; border-radius: 19px; border: 1px solid #dde2ea; font-size: 13px; color: var(--mk-ink); }

/* 疑似重复弹窗里没有额外件，复用 mk-dlg / mk-tag */

/* ===== 组卷编辑器 ===== */
.mk-phead { display: flex; align-items: center; gap: 12px; height: 76px; flex: none; margin-bottom: 12px; padding: 0 16px; border-radius: 16px; background: #fff; border: 1px solid #e6eaf1; }
.mk-back { width: 40px; height: 40px; border-radius: 12px; flex: none; display: flex; align-items: center; justify-content: center; background: #e8edf5; color: #475569; }
.mk-back .mk-i { width: 18px; height: 18px; }
.mk-ptitle { display: flex; align-items: center; gap: 10px; font-size: 21px; line-height: 1.25; font-weight: 700; color: var(--mk-ink); white-space: nowrap; }
.mk-ptitle .mk-i { width: 17px; height: 17px; color: #64748b; }
.mk-pmeta { margin-top: 3px; font-size: 12px; color: #64748b; white-space: nowrap; }
.mk-pmeta i { display: inline-block; width: 1px; height: 11px; margin: 0 7px; vertical-align: -1px; background: #cbd3e0; }
.mk-phead .mk-btn { height: 40px; padding: 0 15px; }
.mk-pcols { flex: 1; min-height: 0; display: flex; gap: 12px; }
.mk-pcenter { position: relative; flex: 1; min-width: 0; overflow: hidden; padding: 4px 14px 0 0; }
.mk-pscroll { position: absolute; right: 4px; top: 6px; width: 6px; height: 360px; border-radius: 3px; background: #c5cddb; }
.mk-sech { display: flex; align-items: center; gap: 8px; height: 46px; margin-bottom: 10px; padding: 0 12px; border-radius: 12px; background: #e4eaf5; }
.mk-sq { width: 24px; height: 24px; border-radius: 7px; flex: none; display: flex; align-items: center; justify-content: center; background: var(--mk-blue); color: #fff; }
.mk-sq .mk-i { width: 14px; height: 14px; stroke-width: 2.4; }
.mk-sech b { font-size: 14px; font-weight: 700; color: var(--mk-ink); white-space: nowrap; }
.mk-sech .mk-sp { flex: 1; }
.mk-sech .mk-tag { background: #d7dfec; color: #64748b; font-weight: 500; height: 24px; }
.mk-pq { margin-bottom: 10px; padding: 12px 16px 12px 14px; border-radius: 12px; background: #fff; border: 1px solid #e9edf4; }
.mk-pq-top { display: flex; align-items: center; gap: 8px; height: 24px; }
.mk-pq-n { width: 26px; font-size: 17px; font-weight: 700; color: var(--mk-ink); }
.mk-pq-st { margin: 4px 0 0 34px; font-family: var(--mk-serif); font-size: 16.5px; line-height: 1.6; color: var(--mk-ink); }
.mk-pq-st span { font-family: var(--mk-serif); }
.mk-pq-top .mk-sp { flex: 1; }
.mk-pright { width: 262px; flex: none; display: flex; flex-direction: column; padding: 0 0 0; overflow: hidden; }
.mk-ptabs { display: flex; align-items: center; height: 56px; flex: none; padding: 0 8px 0 0; border-bottom: 1px solid #eef1f5; }
.mk-ptabs span { height: 56px; line-height: 56px; padding: 0 12px; font-size: 13.5px; font-weight: 600; color: #475569; white-space: nowrap; }
.mk-ptabs span.is-on { color: var(--mk-blue-d); background: #e8effc; border-radius: 16px 0 0 0; box-shadow: inset 0 -2px 0 var(--mk-blue-d); }
.mk-ptabs .mk-sp { flex: 1; }
.mk-ptabs .mk-btn { height: 32px; padding: 0 10px; font-size: 12.5px; border-radius: 16px; gap: 4px; line-height: 32px; }
.mk-ptabs .mk-btn .mk-i { width: 14px; height: 14px; }
.mk-ptabs .mk-btn.mk-btn-pri { margin-left: auto; color: #fff; background: var(--mk-blue); }
.mk-psum { display: flex; align-items: center; justify-content: space-between; height: 40px; flex: none; padding: 0 18px 0 14px; font-size: 12.5px; color: #64748b; }
.mk-psum i { display: inline-block; width: 1px; height: 11px; margin: 0 8px; vertical-align: -1px; background: #cbd3e0; }
.mk-psum span.mk-lnk { display: inline-flex; align-items: center; gap: 4px; font-style: normal; font-family: inherit; }
.mk-psum .mk-lnk .mk-i { width: 14px; height: 14px; }
.mk-grp { margin: 0 10px 8px; padding: 6px 6px 6px; border-radius: 12px; background: #f4f6fa; }
.mk-grp-h { display: flex; align-items: center; gap: 10px; height: 36px; padding: 0 8px 0 6px; font-size: 13px; color: #64748b; }
.mk-grp-h .mk-sq { width: 24px; height: 24px; background: #e1e8f5; color: var(--mk-blue-d); }
.mk-grp-h b { flex: 1; font-size: 14px; font-weight: 700; color: var(--mk-ink); white-space: nowrap; }
.mk-grp-h .mk-i { width: 15px; height: 15px; }
.mk-prow { display: flex; align-items: center; gap: 8px; height: 31px; padding: 0 8px 0 4px; font-size: 12.5px; color: var(--mk-text); }
.mk-grip { width: 14px; height: 14px; color: #b3bccb; }
.mk-prow .mk-no { width: 26px; height: 26px; border-radius: 7px; background: #fff; border: 1px solid #dfe4ec; text-align: center; line-height: 24px; font-size: 12px; color: var(--mk-ink); flex: none; }
.mk-prow .mk-ty { flex: 1; margin-left: 4px; }
.mk-prow .mk-df { width: 40px; font-weight: 700; font-size: 11.5px; }
.mk-prow .mk-pt { width: 34px; text-align: right; color: var(--mk-text); }

/* ===== 白板演示 ===== */
.mk-thead { display: flex; align-items: center; gap: 10px; height: 52px; flex: none; margin-bottom: 8px; }
.mk-thead .mk-title { font-size: 30px; }
.mk-tbtn { display: inline-flex; align-items: center; gap: 8px; height: 38px; padding: 0 18px; border-radius: 19px; background: #e5eaf4; color: #3b6fd8; font-weight: 600; font-size: 13.5px; white-space: nowrap; }
.mk-tbtn .mk-i { width: 16px; height: 16px; }
.mk-wcard { flex: none; padding: 20px 28px 18px; border-radius: 16px; background: #fff; border: 1px solid #e9edf4; box-shadow: 0 2px 10px -6px rgba(15, 23, 42, 0.18); }
.mk-wtop { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.mk-wtop .mk-tag { height: 24px; padding: 0 12px; }
.mk-wstem { font-family: var(--mk-serif); font-size: 23px; line-height: 1.6; color: var(--mk-ink); }
.mk-wstem .mk-no { font-size: 17px; font-weight: 700; margin-right: 6px; font-family: -apple-system, "PingFang SC", sans-serif; }
.mk-wstem .mk-wp { white-space: pre; }
.mk-wstem .mk-wp b { color: #15803d; font-weight: 700; }
.mk-wopts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 16px 0 14px; }
.mk-wo { display: flex; align-items: center; gap: 10px; height: 52px; padding: 0 14px; border-radius: 12px; background: #f6f8fb; border: 1px solid #e9edf4; font-family: var(--mk-serif); font-size: 20px; color: var(--mk-ink); white-space: nowrap; }
.mk-wo-l { width: 26px; height: 26px; border-radius: 8px; flex: none; background: #e6eaf2; color: #64748b; text-align: center; line-height: 26px; font-weight: 700; font-size: 14px; font-family: -apple-system, "PingFang SC", sans-serif; }
.mk-wo.is-ok { background: #e7f8ee; border-color: #6fcf97; box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.12); }
.mk-wo.is-ok .mk-wo-l { background: #22a55b; color: #fff; }
.mk-wo-ok { margin-left: auto; display: inline-flex; align-items: center; gap: 4px; font-size: 12px; font-weight: 700; color: #15803d; font-family: -apple-system, "PingFang SC", sans-serif; }
.mk-wo-ok .mk-i { width: 13px; height: 13px; stroke-width: 2.6; }
.mk-wan { padding: 12px 18px 8px; border-radius: 12px; background: #eaf1fe; border: 1px solid #d3e1fb; }
.mk-wan h5 { margin: 0 0 4px; font-size: 13px; font-weight: 700; color: #2f5fd0; }
.mk-wan p { margin: 0 0 4px; font-family: var(--mk-serif); font-size: 16.5px; line-height: 1.7; color: #1e3a6e; }
.mk-wfoot { display: flex; align-items: center; gap: 10px; margin-top: 14px; }
.mk-wid { font-size: 13px; color: #8a95a8; font-family: -apple-system, "PingFang SC", sans-serif; }
.mk-wnav { position: absolute; left: 50%; bottom: 8px; margin-left: -190px; width: 380px; height: 56px; display: flex; align-items: center; justify-content: space-between; padding: 0 8px; border-radius: 28px; background: #e8ecf4; }
.mk-wnav .mk-nb { display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 20px; border-radius: 20px; background: #f6f8fb; font-size: 14px; font-weight: 500; color: var(--mk-text); }
.mk-wnav .mk-nb .mk-i { width: 15px; height: 15px; }
.mk-wnav b { font-size: 16px; font-weight: 700; color: var(--mk-ink); }

/* ===== 老浏览器退化：不支持 calc(长度 / 长度) 时按容器宽度分档缩放（只缩小，不溢出） ===== */
@supports not (transform: scale(calc(10px / 1px))) {
    .mock-stage { transform: scale(0.2308); }
    @container (min-width: 240px) { .mock-stage { transform: scale(0.2308); } }
    @container (min-width: 264px) { .mock-stage { transform: scale(0.2538); } }
    @container (min-width: 288px) { .mock-stage { transform: scale(0.2769); } }
    @container (min-width: 312px) { .mock-stage { transform: scale(0.3000); } }
    @container (min-width: 336px) { .mock-stage { transform: scale(0.3231); } }
    @container (min-width: 360px) { .mock-stage { transform: scale(0.3462); } }
    @container (min-width: 384px) { .mock-stage { transform: scale(0.3692); } }
    @container (min-width: 408px) { .mock-stage { transform: scale(0.3923); } }
    @container (min-width: 432px) { .mock-stage { transform: scale(0.4154); } }
    @container (min-width: 456px) { .mock-stage { transform: scale(0.4385); } }
    @container (min-width: 480px) { .mock-stage { transform: scale(0.4615); } }
    @container (min-width: 504px) { .mock-stage { transform: scale(0.4846); } }
    @container (min-width: 528px) { .mock-stage { transform: scale(0.5077); } }
    @container (min-width: 552px) { .mock-stage { transform: scale(0.5308); } }
    @container (min-width: 576px) { .mock-stage { transform: scale(0.5538); } }
    @container (min-width: 600px) { .mock-stage { transform: scale(0.5769); } }
    @container (min-width: 624px) { .mock-stage { transform: scale(0.6000); } }
    @container (min-width: 648px) { .mock-stage { transform: scale(0.6231); } }
    @container (min-width: 672px) { .mock-stage { transform: scale(0.6462); } }
    @container (min-width: 696px) { .mock-stage { transform: scale(0.6692); } }
    @container (min-width: 720px) { .mock-stage { transform: scale(0.6923); } }
    @container (min-width: 744px) { .mock-stage { transform: scale(0.7154); } }
    @container (min-width: 768px) { .mock-stage { transform: scale(0.7385); } }
    @container (min-width: 792px) { .mock-stage { transform: scale(0.7615); } }
    @container (min-width: 816px) { .mock-stage { transform: scale(0.7846); } }
    @container (min-width: 840px) { .mock-stage { transform: scale(0.8077); } }
    @container (min-width: 864px) { .mock-stage { transform: scale(0.8308); } }
    @container (min-width: 888px) { .mock-stage { transform: scale(0.8538); } }
    @container (min-width: 912px) { .mock-stage { transform: scale(0.8769); } }
    @container (min-width: 936px) { .mock-stage { transform: scale(0.9000); } }
    @container (min-width: 960px) { .mock-stage { transform: scale(0.9231); } }
    @container (min-width: 984px) { .mock-stage { transform: scale(0.9462); } }
    @container (min-width: 1008px) { .mock-stage { transform: scale(0.9692); } }
    @container (min-width: 1032px) { .mock-stage { transform: scale(0.9923); } }
}