/* 视觉方向：纸面白 + 黑板绿。墨色字、浅灰线，一个主色（黑板绿），重点用荧光黄 */
:root {
  --paper: #fbfbf7;
  --sheet: #ffffff;
  --ink: #23272b;
  --mute: #6e747a;
  --staff: #dadfd9;
  --main: #3a8a71;
  --main-soft: #e7f3ee;
  --hl: #fff09a;
  --wrong: #cd6a55;
  --wrong-soft: #fbece8;
  --radius: 14px;
  --t-single: #2b6cb0; --t-multi: #7b4fa0; --t-judge: #b7791f; --t-fill: #2f855a;
  --t-match: #c05621; --t-short: #4a5568; --t-essay: #9b2c2c;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #151918; --sheet: #1c2120; --ink: #e6e9e6; --mute: #9aa29e; --staff: #2e3533;
    --main: #6fbfa6; --main-soft: #21332d; --hl: #5e5420; --wrong: #e58a78; --wrong-soft: #3a2420;
    --t-single: #6ea8e0; --t-multi: #b58ad6; --t-judge: #e0ad55; --t-fill: #62c08d;
    --t-match: #ec9358; --t-short: #a3adbd; --t-essay: #e07b7b;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 16px/1.75 -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--main); outline-offset: 2px; }
.wrap { max-width: 640px; margin: 0 auto; padding: 16px 16px 112px; }
.mute { color: var(--mute); }
.small { font-size: 14px; }
mark { background: var(--hl); color: inherit; font-weight: 700; padding: 0 2px; border-radius: 2px; }

/* 按钮 */
.btn { min-height: 48px; padding: 0 20px; border-radius: 12px; border: 0; background: var(--main); color: #fff; font-weight: 600; }
@media (prefers-color-scheme: dark) { .btn { color: #102320; } }
.btn.line { background: transparent; color: var(--main); border: 1.5px solid var(--main); }
.btn.block { width: 100%; }
.btn:disabled { opacity: .45; cursor: default; }

/* 顶部条（内页） */
.top { position: sticky; top: 0; z-index: 5; background: var(--paper); display: flex; align-items: center; gap: 8px;
  padding: 8px 4px; border-bottom: 1px solid var(--staff); margin: -16px -16px 16px; padding-left: 8px; padding-right: 16px; }
.top .back { min-width: 44px; min-height: 44px; border: 0; background: none; font-size: 22px; color: var(--ink); }
.top h1 { font-size: 17px; margin: 0; flex: 1; }
.top .count { color: var(--mute); font-size: 14px; font-variant-numeric: tabular-nums; }

/* 登录 */
.login { min-height: 100vh; display: flex; flex-direction: column; justify-content: center; max-width: 420px; margin: 0 auto; padding: 24px; }
.login h1 { font-size: 26px; margin: 0 0 4px; }
.login input { width: 100%; margin-top: 24px; min-height: 56px; padding: 0 14px; border: 1.5px solid var(--staff); border-radius: 12px;
  background: var(--sheet); font: 20px/1 ui-monospace, Consolas, monospace; letter-spacing: 3px; text-transform: uppercase; }
.login .err { color: var(--wrong); min-height: 28px; margin: 8px 0; }

/* 首页头部：谱号 + 沿一条起伏曲线排开的 5 个音符（今天的 5 题） */
.hello { padding: 8px 0 0; }
.hello h1 { font-size: 22px; margin: 0; }
.staff-card { margin: 4px 0 20px; }
.staff-card svg { display: block; width: 100%; height: auto; overflow: visible; touch-action: pan-y; }
.staff-card .flow { fill: none; stroke: var(--staff); stroke-width: 1.5; stroke-linecap: round; }
.staff-card .clef { fill: var(--ink); opacity: .78; font-family: "Segoe UI Symbol", "Apple Symbols", "Noto Music", serif; }
.staff-card .n { transition: transform .35s cubic-bezier(.3,.7,.3,1); transform-box: fill-box; transform-origin: center; }
.staff-card .stem { stroke: var(--ink); stroke-width: 1.6; }
.staff-card .head { fill: var(--paper); stroke: var(--ink); stroke-width: 1.7; }
.staff-card .n.ok .head { fill: var(--main); stroke: var(--main); }
.staff-card .n.ok .stem { stroke: var(--main); }
.staff-card .n.no .head { fill: var(--wrong); stroke: var(--wrong); }
.staff-card .n.no .stem { stroke: var(--wrong); }
.staff-meta { display: flex; justify-content: space-between; align-items: baseline; margin-top: 2px; font-variant-numeric: tabular-nums; }
.staff-meta b { font-size: 20px; }

/* 首页入口 */
.today { display: block; width: 100%; text-align: left; background: var(--main); color: #fff; border: 0; border-radius: 18px; padding: 20px; min-height: 112px;
  transition: transform .18s, filter .18s; }
@media (prefers-color-scheme: dark) { .today { color: #102320; } }
.today p { opacity: .9; }
.today .ic { font-size: 28px; }
.today h2 { margin: 4px 0 2px; font-size: 22px; }
.today p { margin: 0; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; }
.tile { text-align: left; background: var(--sheet); border: 1px solid var(--staff); border-radius: var(--radius); padding: 14px; min-height: 104px;
  display: flex; flex-direction: column; justify-content: space-between; color: var(--ink); text-decoration: none; }
.tile .ic { font-size: 24px; line-height: 1; }
.tile h3 { font-size: 16px; margin: 8px 0 0; }
.tile p { margin: 0; font-size: 14px; color: var(--mute); font-variant-numeric: tabular-nums; }
.tile.wide { grid-column: span 2; flex-direction: row; align-items: center; gap: 12px; min-height: 72px; }
.tile.wide h3 { margin: 0; }
.tile.soon { opacity: .55; }
/* 鼠标经过时的反馈（只在有鼠标的设备上） */
.tile, .chap, .opt { transition: border-color .18s, background-color .18s, transform .18s; }
@media (hover: hover) {
  a.tile:hover, a.chap:hover { border-color: var(--main); background: var(--main-soft); transform: translateY(-2px); }
  .today:hover { transform: translateY(-2px); filter: brightness(1.08); }
  .opt:not(:disabled):hover { border-color: var(--main); background: var(--main-soft); }
  .btn:not(:disabled):hover { filter: brightness(1.1); }
  .btn.line:not(:disabled):hover { background: var(--main-soft); filter: none; }
  .dock .fav:hover, .top .back:hover { background: var(--main-soft); }
  .tile.soon:hover { cursor: default; }
}
.tile:active, .chap:active, .today:active, .opt:not(:disabled):active { transform: scale(.985); }
.foot { text-align: center; margin-top: 28px; }
.foot button { border: 0; background: none; color: var(--mute); min-height: 44px; text-decoration: underline; }

/* 第一轮目录 */
.chap { display: flex; align-items: center; gap: 12px; width: 100%; text-align: left; background: var(--sheet); border: 1px solid var(--staff);
  border-radius: var(--radius); padding: 14px 16px; margin-bottom: 10px; min-height: 72px; color: var(--ink); text-decoration: none; }
.chap .no { width: 32px; height: 32px; border-radius: 50%; background: var(--main-soft); color: var(--main); display: grid; place-items: center; font-weight: 700; flex: none; }
.chap .mid { flex: 1; min-width: 0; }
.chap .bar { height: 4px; background: var(--staff); border-radius: 2px; margin-top: 6px; overflow: hidden; }
.chap .bar i { display: block; height: 100%; background: var(--main); }
.chap .pct { font-variant-numeric: tabular-nums; color: var(--mute); font-size: 14px; }

/* 题目 */
.qhead { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.badge { display: inline-block; color: #fff; font-size: 14px; font-weight: 700; padding: 2px 12px; border-radius: 999px; }
@media (prefers-color-scheme: dark) { .badge { color: #111; } }
.b-single { background: var(--t-single); } .b-multi { background: var(--t-multi); } .b-judge { background: var(--t-judge); }
.b-fill { background: var(--t-fill); } .b-match { background: var(--t-match); } .b-short { background: var(--t-short); } .b-essay { background: var(--t-essay); }
.stem { font-size: 18px; line-height: 1.8; margin: 0 0 14px; white-space: pre-wrap; word-break: break-word; }
.stem img, .key img { display: block; max-width: 100%; margin: 10px 0; background: #fff; border-radius: 8px; }
.opt { display: flex; gap: 10px; width: 100%; text-align: left; background: var(--sheet); border: 1.5px solid var(--staff); border-radius: 12px;
  padding: 12px 14px; margin-bottom: 10px; min-height: 52px; align-items: flex-start; color: var(--ink); }
.opt .l { font-weight: 700; color: var(--mute); flex: none; }
.opt.pick { border-color: var(--main); background: var(--main-soft); }
.opt.right { border-color: var(--main); background: var(--main-soft); }
.opt.right .l { color: var(--main); }
.opt.wrong { border-color: var(--wrong); background: var(--wrong-soft); }
.opt.wrong .l { color: var(--wrong); }
.opt:disabled { cursor: default; }
.judge { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.judge .opt { justify-content: center; font-weight: 600; }
.blank { display: inline-block; min-width: 5.5em; max-width: 100%; border: 0; border-bottom: 2px solid var(--main); background: var(--main-soft);
  padding: 0 6px; margin: 0 3px; font-size: 17px; border-radius: 4px 4px 0 0; }
.blank.right { border-color: var(--main); }
.blank.wrong { border-color: var(--wrong); background: var(--wrong-soft); }
textarea.write { width: 100%; min-height: 110px; border: 1.5px solid var(--staff); border-radius: 12px; background: var(--sheet); padding: 12px; }
.mrow { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 8px 0; border-bottom: 1px dashed var(--staff); }
.mrow select { min-height: 44px; border-radius: 10px; border: 1.5px solid var(--staff); background: var(--sheet); max-width: 62%; padding: 0 8px; }
.mrow { flex-wrap: wrap; }
.mrow select.right { border-color: var(--main); } .mrow select.wrong { border-color: var(--wrong); }
.mrow .fix { flex-basis: 100%; text-align: right; color: var(--main); font-size: 14px; }
.mrow .fix::before { content: "应为 "; color: var(--mute); }

/* 作答后 */
.verdict { font-weight: 700; font-size: 17px; margin: 14px 0 6px; }
.verdict.ok { color: var(--main); } .verdict.no { color: var(--wrong); }
.key { background: var(--sheet); border: 1px solid var(--staff); border-radius: 12px; padding: 12px 14px; margin: 8px 0; white-space: pre-wrap; }
.key .lbl { display: block; font-size: 14px; color: var(--mute); }
.explain { border-left: 4px solid var(--main); padding: 4px 0 4px 12px; margin: 12px 0; }
details.orig { margin: 10px 0; }
details.orig summary { min-height: 44px; display: flex; align-items: center; color: var(--main); font-weight: 600; cursor: pointer; }
details.orig div { white-space: pre-wrap; color: var(--ink); background: var(--sheet); border-radius: 12px; padding: 12px 14px; border: 1px solid var(--staff); }
.self { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
.self .btn.line.on { background: var(--main); color: #fff; }

/* 底部操作条 */
.dock { position: fixed; left: 0; right: 0; bottom: 0; background: var(--paper); border-top: 1px solid var(--staff);
  padding: 8px 16px calc(8px + env(safe-area-inset-bottom)); z-index: 6; }
.dock .in { max-width: 640px; margin: 0 auto; display: grid; grid-template-columns: 1fr 64px 1fr; gap: 10px; }
.dock .fav { min-height: 48px; border-radius: 12px; border: 1.5px solid var(--staff); background: var(--sheet); font-size: 20px; }
.dock .fav.on { border-color: var(--t-judge); }

/* 每日小结 */
.sum h2 { font-size: 22px; margin: 8px 0; }
.sum .big { font-size: 40px; font-weight: 700; font-variant-numeric: tabular-nums; color: var(--main); }
.sum ul { padding-left: 20px; }
.empty { text-align: center; padding: 48px 0; }
.toast { position: fixed; left: 50%; bottom: 96px; transform: translateX(-50%); background: var(--ink); color: var(--paper); padding: 10px 16px; border-radius: 10px; z-index: 9; }

/* 错题本 */
.linkbtn { display: grid; place-items: center; text-decoration: none; }
.wsum { background: var(--sheet); border: 1px solid var(--staff); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 14px; }
.wsum p { margin: 0 0 10px; }
.wsum .small { margin: 10px 0 0; }
.wbig { font-size: 28px; color: var(--main); font-variant-numeric: tabular-nums; }
.seg { display: grid; grid-template-columns: repeat(3, 1fr); background: var(--staff); border-radius: 12px; padding: 3px; gap: 3px; margin-bottom: 12px; }
.seg button { min-height: 40px; border: 0; border-radius: 9px; background: transparent; color: var(--mute); font-weight: 600; }
.seg button[aria-selected="true"] { background: var(--sheet); color: var(--ink); }
.wrow { display: flex; flex-direction: column; gap: 4px; background: var(--sheet); border: 1px solid var(--staff); border-radius: var(--radius);
  padding: 12px 14px; margin-bottom: 10px; color: var(--ink); text-decoration: none; transition: border-color .18s, background-color .18s, transform .18s; }
.wrow .wmeta { display: flex; align-items: center; gap: 8px; }
.wrow .badge { font-size: 12px; padding: 0 9px; }
.wrow .wstem { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
@media (hover: hover) { .wrow:hover { border-color: var(--main); background: var(--main-soft); transform: translateY(-2px); } }
.seg.seg2 { grid-template-columns: 1fr 1fr; }

/* 考点卡（第二轮、新课标） */
.hello { display: flex; align-items: center; justify-content: space-between; }
.mebtn { min-height: 44px; min-width: 64px; display: grid; place-items: center; border: 1px solid var(--staff); border-radius: 999px;
  background: var(--sheet); color: var(--ink); text-decoration: none; font-size: 15px; padding: 0 16px; }
.gh { font-size: 15px; color: var(--mute); margin: 20px 2px 8px; font-weight: 600; }
.pcard { background: var(--sheet); border: 1px solid var(--staff); border-left: 4px solid var(--staff); border-radius: var(--radius); padding: 12px 14px; margin-bottom: 10px; }
.pcard.ok { border-left-color: var(--main); }
.pcard.no { border-left-color: var(--wrong); }
.pcard h3 { font-size: 17px; margin: 0 0 4px; }
.pcard p { margin: 0; line-height: 1.75; }
.pfoot { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-top: 10px; }
.pst { color: var(--mute); }
.pcard.ok .pst { color: var(--main); font-weight: 600; }
.pcard.no .pst { color: var(--wrong); }
.btn.sm { min-height: 44px; padding: 0 14px; font-size: 15px; }
details.pt { margin: 0 0 12px; }
/* 知识点速览 */
.search { width: 100%; min-height: 48px; padding: 0 14px; border: 1.5px solid var(--staff); border-radius: 12px; background: var(--sheet); margin: 4px 0 12px; }
details.mod { border-bottom: 1px solid var(--staff); }
details.mod summary { min-height: 52px; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-size: 17px; }
.pl { list-style: none; padding: 0; margin: 0 0 12px; }
.pl li { padding: 8px 0; border-bottom: 1px dashed var(--staff); line-height: 1.75; }
.pl li:last-child { border-bottom: 0; }
.pl li b { margin-right: 8px; }
/* 我的 */
.mename { font-size: 22px; font-weight: 700; margin: 6px 2px 14px; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.stats div { background: var(--sheet); border: 1px solid var(--staff); border-radius: var(--radius); padding: 12px; text-align: center; }
.stats b { display: block; font-size: 24px; color: var(--main); font-variant-numeric: tabular-nums; }
.stats span { font-size: 14px; color: var(--mute); }
.rrow { display: grid; grid-template-columns: 7.5em 1fr 3em; align-items: center; gap: 10px; min-height: 40px; }
.rn { font-size: 15px; line-height: 1.35; padding: 4px 0; }
.rv.low { color: var(--wrong); }
.rbar { height: 10px; background: var(--staff); border-radius: 5px; overflow: hidden; }
.rbar i { display: block; height: 100%; background: var(--main); border-radius: 5px; }
.rbar i.low { background: var(--wrong); }
.rv { text-align: right; font-size: 14px; color: var(--mute); font-variant-numeric: tabular-nums; }
@media (hover: hover) {
  .pcard .btn.line:hover, .mebtn:hover { background: var(--main-soft); }
  details.mod summary:hover { color: var(--main); }
}
/* 闪卡：点一下翻面 */
.fcard { display: grid; width: 100%; margin-top: 8px; border: 0; padding: 0; background: none; perspective: 1200px; text-align: center; }
.fcard .face { grid-area: 1 / 1; min-height: 300px; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 14px;
  padding: 24px 22px; background: var(--sheet); border: 1px solid var(--staff); border-radius: 20px;
  backface-visibility: hidden; -webkit-backface-visibility: hidden; transition: transform .45s cubic-bezier(.3,.7,.3,1); }
.fcard .front { border-top: 4px solid var(--main); }
.fcard .back { transform: rotateY(180deg); }
.fcard.on .front { transform: rotateY(-180deg); }
.fcard.on .back { transform: rotateY(0); }
.fcard .ft { font-size: 26px; font-weight: 700; line-height: 1.4; }
.fcard .ft.sm { font-size: 17px; color: var(--mute); }
.fcard .bk { font-size: 19px; line-height: 1.8; text-align: left; }
.fcard .hint { color: var(--mute); }
.fcard.known .front { border-top-color: var(--staff); }
.kn { text-align: center; margin: 10px 0 0; }
@media (prefers-reduced-motion: reduce) { .fcard .face { transition: none; } }
@media (hover: hover) { .fcard:hover .face { border-color: var(--main); } }
/* 加入笔记按钮 */
.addnote { min-height: 44px; padding: 0 12px; border: 1px dashed var(--main); border-radius: 10px; background: none; color: var(--main); font-size: 15px; font-weight: 600; }
.addnote.on { border-style: solid; border-color: var(--staff); color: var(--mute); cursor: default; }
details.orig .addnote { margin-top: 8px; }
.pfoot .addnote { margin-left: auto; }
/* 速览里笔记按钮放在每条右侧，不单占一行 */
.pl li { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: start; }
.pl li .addnote { width: 44px; min-height: 44px; padding: 0; font-size: 0; }
.pl li .addnote::before { content: "＋"; font-size: 18px; }
.pl li .addnote.on::before { content: "✓"; }
.fnote { text-align: center; margin-top: 12px; }
@media (hover: hover) { .addnote:not(.on):hover { background: var(--main-soft); } }
/* 我的笔记 */
.top .btn.sm { min-height: 40px; padding: 0 14px; }
.note { background: var(--sheet); border: 1px solid var(--staff); border-radius: var(--radius); padding: 12px 14px; margin-bottom: 10px; }
.note .nc { white-space: pre-wrap; line-height: 1.75; word-break: break-word; }
.note .nr { margin: 8px 0 0; padding: 6px 10px; background: var(--main-soft); border-radius: 8px; font-size: 15px; }
.note .nr::before { content: "批注："; color: var(--main); font-weight: 600; }
.nfoot { display: flex; align-items: center; gap: 12px; margin-top: 8px; flex-wrap: wrap; }
.nfoot a { color: var(--main); min-height: 40px; display: inline-flex; align-items: center; }
.nfoot .sp { flex: 1; }
.nfoot button { min-height: 40px; border: 0; background: none; color: var(--mute); padding: 0 4px; }
.nfoot [data-del] { color: var(--wrong); }
.nform { display: grid; gap: 10px; background: var(--sheet); border: 1px solid var(--staff); border-radius: var(--radius); padding: 12px; margin: 4px 0 12px; }
.nform.edit { border: 0; padding: 0; margin: 0; background: none; }
.nform[hidden] { display: none; }
.nform select, .nform input, .nform textarea { width: 100%; min-height: 44px; padding: 8px 12px; border: 1.5px solid var(--staff); border-radius: 10px; background: var(--paper); }
.nform textarea { min-height: 110px; line-height: 1.7; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
/* 回到顶部 */
.top { touch-action: manipulation; -webkit-user-select: none; user-select: none; }
.totop { position: fixed; right: 16px; bottom: 96px; z-index: 6; width: 48px; height: 48px; border-radius: 50%;
  border: 1px solid var(--staff); background: var(--sheet); color: var(--main); font-size: 22px; font-weight: 700; box-shadow: 0 2px 8px rgba(0,0,0,.08); }
.totop[hidden] { display: none; }
@media (hover: hover) { .totop:hover { background: var(--main-soft); } }
.pfoot { flex-wrap: wrap; }
.pfoot .btn, .pfoot .addnote { white-space: nowrap; }
.pfoot .pst { flex: 1 1 100%; }
/* 笔记输入框：右下角字数 */
.cbox { position: relative; display: block; }
.cbox textarea { display: block; width: 100%; min-height: 64px; padding: 10px 12px 26px; line-height: 1.7; resize: vertical; overflow: hidden; }
.cbox .cnt { position: absolute; right: 10px; bottom: 6px; font-size: 13px; color: var(--mute); font-variant-numeric: tabular-nums; pointer-events: none; }
.cbox textarea[data-f="content"] { min-height: 110px; }

/* ---------- 知识导图 ---------- */
:root { --mm-ok: #23272b; --mm-grey: #9ba19d; --mm-line: #cfd5cf; }
@media (prefers-color-scheme: dark) { :root { --mm-ok: #f1f3ef; --mm-grey: #5b625e; --mm-line: #3a403d; } }
.mm { max-width: none; padding: 0; }
.mm .top { margin: 0; padding-left: 8px; padding-right: 12px; }
.mm-grey { min-height: 40px; padding: 0 12px; border-radius: 999px; border: 1.5px solid var(--staff); background: var(--sheet); color: var(--mute); font-weight: 600; font-size: 15px; }
.mm-grey[aria-pressed="true"] { border-color: var(--main); background: var(--main-soft); color: var(--main); }
.mm-meta { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 6px 16px 8px; font-size: 15px; flex-wrap: wrap; }
.mm-legend { color: var(--mute); font-size: 14px; display: inline-flex; align-items: center; gap: 4px; }
.mm-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: var(--mm-grey); margin-left: 8px; }
.mm-legend i.ok { background: var(--mm-ok); margin-left: 0; }
.mm-view { position: relative; height: calc(100vh - 100px); height: calc(100dvh - 100px); overflow: hidden; touch-action: none; border-top: 1px solid var(--staff);
  background: var(--paper); cursor: grab; -webkit-user-select: none; user-select: none; }
.mm-view:active { cursor: grabbing; }
.mm-view svg { width: 100%; height: 100%; display: block; font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif; }
.mm-view .e { fill: none; stroke: var(--mm-line); stroke-width: 1.5; }
.mm-view .lk { fill: none; stroke: var(--main); stroke-width: 1.3; stroke-dasharray: 5 4; opacity: .55; }
.mm-view .md rect { fill: var(--sheet); stroke: var(--staff); stroke-width: 1.2; }
.mm-view .md.open rect { fill: var(--main-soft); stroke: var(--main); }
.mm-view .md text { font-size: 15px; font-weight: 700; fill: var(--ink); }
.mm-view .md .cnt, .mm-view .br .cnt { font-size: 12px; font-weight: 400; fill: var(--mute); }
.mm-view .md .chev { font-size: 18px; fill: var(--main); }
.mm-view .md, .mm-view .pt { cursor: pointer; outline: none; }
.mm-view .br rect { fill: var(--paper); stroke: var(--mm-line); }
.mm-view .br text { font-size: 14px; font-weight: 700; fill: var(--ink); }
.mm-view .pt text { font-size: 15px; fill: var(--mm-grey); }
.mm-view .pt circle { fill: var(--paper); stroke: var(--mm-grey); stroke-width: 2; }
.mm-view .pt.ok text { fill: var(--mm-ok); font-weight: 700; }
.mm-view .pt.ok circle { fill: var(--mm-ok); stroke: var(--mm-ok); }
.mm-view .pt .hit { fill: transparent; }
.mm-view .pt:focus-visible .hit, .mm-view .md:focus-visible rect { stroke: var(--main); stroke-width: 2; }
.mm-view .pt.flash .hit { fill: var(--hl); }
@media (hover: hover) { .mm-view .pt:hover .hit { fill: var(--main-soft); } .mm-view .md:hover rect { stroke: var(--main); } }
.mm-zoom { position: absolute; right: 12px; bottom: 16px; display: grid; gap: 8px; }
.mm-zoom button { width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--staff); background: var(--sheet); color: var(--ink); font-size: 20px; }
/* 点考点弹出的小卡片 */
.sheet { position: fixed; left: 0; right: 0; bottom: 0; z-index: 8; display: flex; justify-content: center; pointer-events: none; }
.sheet[hidden] { display: none; }
.sh-in { pointer-events: auto; width: 100%; max-width: 640px; max-height: 70vh; overflow: auto; background: var(--sheet); border: 1px solid var(--staff);
  border-radius: 20px 20px 0 0; padding: 14px 16px calc(16px + env(safe-area-inset-bottom)); box-shadow: 0 -6px 24px rgba(0,0,0,.12); }
.sh-head { display: flex; align-items: center; gap: 10px; }
.sh-head h2 { flex: 1; font-size: 19px; margin: 0; }
.sh-x { width: 44px; height: 44px; border: 0; background: none; font-size: 26px; color: var(--mute); }
.mm-dot { width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--mm-grey); flex: none; }
.mm-dot.ok { background: var(--mm-ok); border-color: var(--mm-ok); }
.sh-mod { margin: 0 0 6px; }
.sh-sum { margin: 0 0 8px; line-height: 1.8; }
.sh-in .pst.ok { color: var(--main); font-weight: 600; } .sh-in .pst.no { color: var(--wrong); }
.sh-rel { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 10px 0; }
.chip { min-height: 40px; padding: 4px 12px; border-radius: 999px; border: 1px dashed var(--main); background: none; color: var(--main); font-size: 15px; }
.chip em { font-style: normal; color: var(--mute); font-size: 12px; margin-left: 6px; }
.sh-act { display: flex; gap: 10px; align-items: center; margin-top: 12px; flex-wrap: wrap; }
.sh-act .btn { flex: 1; min-width: 180px; }
/* 加载中：慢了才出现。先是顶部细进度条，再慢才有居中小提示；都不挡点击 */
.loading { position: fixed; inset: 0; z-index: 20; display: none; pointer-events: none; }
.loading::before { content: ""; position: absolute; top: 0; left: 0; height: 3px; width: 40%; background: var(--main); animation: load 1s ease-in-out infinite; }
.loading span { position: absolute; left: 50%; top: 42%; transform: translateX(-50%); background: var(--ink); color: var(--paper); padding: 10px 18px; border-radius: 999px; font-size: 15px; display: none; }
body.busy .loading { display: block; }
body.busy-long .loading span { display: block; }
body.busy-long #app { opacity: .7; transition: opacity .2s; }
@keyframes load { 0% { left: -40%; } 100% { left: 100%; } }
@media (prefers-reduced-motion: reduce) { .loading::before { animation: none; width: 100%; } }
.foot a { color: var(--main); min-height: 44px; display: inline-flex; align-items: center; }