/* 自动生成，请勿手改 —— 由 scripts/scope-math-mastery-css.py 从 styles.css 生成
 * 上游：math-mastery（MIT，作者 王维 kenowong@me.com）
 * 目的：全部选择器限定在 .mm-scope 内，避免 .btn/.card/.nav/.tag 等通用类名污染全站
 */
.mm-scope{
  --bg:#f5f7fa; --panel:#ffffff; --ink:#1f2937; --muted:#6b7280;
  --line:#e5e7eb; --primary:#2f6fed; --primary-d:#1e4fb0;
  scroll-behavior:smooth;
  --ok:#16a34a; --warn:#d97706; --lock:#9ca3af; --danger:#dc2626;
  --chip:#eef3ff; --shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.04);
  --radius:12px;
}
.mm-scope *{box-sizing:border-box}
.mm-scope .topbar{
  position:sticky; top:0; z-index:20; display:flex; align-items:center; justify-content:space-between;
  padding:10px 16px; background:linear-gradient(90deg,#1e3a8a,#2f6fed); color:#fff; box-shadow:var(--shadow);
}
.mm-scope .brand{display:flex; align-items:center; gap:10px}
.mm-scope .logo{width:36px;height:36px;border-radius:9px;background:rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700}
.mm-scope .brand-title{font-weight:700;font-size:16px;line-height:1.1}
.mm-scope .brand-sub{font-size:11px;opacity:.82}
.mm-scope .nav{display:flex;gap:6px;align-items:center;background:transparent}
.mm-scope .nav-link{color:#fff;text-decoration:none;font-size:13px;padding:6px 10px;border-radius:8px;opacity:.9;position:relative}
.mm-scope .nav-link.active{background:rgba(255,255,255,.2);opacity:1;font-weight:600}
.mm-scope .badge{position:absolute;top:-4px;right:-6px;background:var(--danger);color:#fff;font-size:10px;border-radius:10px;padding:0 5px;min-width:16px;text-align:center;display:none}
.mm-scope .badge.show{display:inline-block}
.mm-scope .view{max-width:none;margin:0 auto;padding:16px}
.mm-scope .footpad{height:24px}
.mm-scope .card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow);margin-bottom:14px}
.mm-scope h2.section{font-size:18px;margin:4px 0 12px}
.mm-scope h3{font-size:15px;margin:14px 0 6px}
.mm-scope .muted{color:var(--muted);font-size:13px}
.mm-scope .btn{display:inline-flex;align-items:center;gap:6px;border:none;border-radius:9px;padding:9px 14px;font-size:14px;cursor:pointer;background:var(--primary);color:#fff;font-weight:600;transition:.15s}
.mm-scope .btn:hover{background:var(--primary-d)}
.mm-scope .btn.ghost{background:#fff;color:var(--primary);border:1px solid var(--primary)}
.mm-scope .btn.soft{background:var(--chip);color:var(--primary-d)}
.mm-scope .btn:disabled{opacity:.5;cursor:not-allowed}
.mm-scope .btn.sm{padding:6px 10px;font-size:13px}
.mm-scope .row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.mm-scope .spacer{flex:1}
.mm-scope .tag{display:inline-block;font-size:12px;padding:2px 8px;border-radius:20px;background:var(--chip);color:var(--primary-d);margin-right:6px}
.mm-scope .tag.g{background:#e7f6ee;color:var(--ok)}
.mm-scope .tag.w{background:#fdf0e3;color:var(--warn)}
.mm-scope .tag.l{background:#f1f3f5;color:var(--lock)}
.mm-scope .tree{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:10px}
.mm-scope .stage-banner,.mm-scope .stage-banner.sm,.mm-scope .grade-sep{grid-column:1 / -1}
.mm-scope .node{display:flex;gap:12px;align-items:flex-start;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;box-shadow:var(--shadow);position:relative}
.mm-scope .node.locked{opacity:.72;background:#fafafa}
.mm-scope .node.mastered{border-color:#bfe6cc}
@keyframes nodeFlash{0%{box-shadow:0 0 0 3px var(--primary);border-color:var(--primary)}100%{box-shadow:var(--shadow);border-color:var(--line)}}
.mm-scope .node.flash{animation:nodeFlash 1.8s ease-out}
.mm-scope .node .step{width:30px;height:30px;border-radius:50%;flex:0 0 auto;display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;background:var(--primary)}
.mm-scope .node.locked .step{background:var(--lock)}
.mm-scope .node.mastered .step{background:var(--ok)}
.mm-scope .node .body{flex:1;min-width:0}
.mm-scope .node .title{font-weight:700;font-size:16px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.mm-scope .node .meta{font-size:12px;color:var(--muted);margin-top:2px}
.mm-scope .node .acts{margin-top:8px}
.mm-scope .status-pill{font-size:12px;padding:2px 9px;border-radius:20px}
.mm-scope .status-pill.lock{background:#f1f3f5;color:var(--lock)}
.mm-scope .status-pill.learn{background:var(--chip);color:var(--primary-d)}
.mm-scope .status-pill.done{background:#e7f6ee;color:var(--ok)}
.mm-scope .lock-ico{font-size:14px}
.mm-scope .grade-sep{margin:18px 0 6px;font-weight:700;color:var(--primary-d);font-size:14px;border-left:4px solid var(--primary);padding-left:8px}
.mm-scope .stage-banner{display:flex;align-items:baseline;gap:10px;margin:22px 0 4px;padding:10px 14px;border-radius:10px;background:linear-gradient(90deg,#1e3a8a,#2f6fed);color:#fff;box-shadow:var(--shadow)}
.mm-scope .stage-banner.sm{margin:16px 0 2px;padding:6px 12px;background:#eef3ff}
.mm-scope .stage-name{font-weight:800;font-size:17px}
.mm-scope .stage-banner.sm .stage-name{font-size:15px;color:var(--primary-d)}
.mm-scope .stage-desc{font-size:12px;opacity:.85}
.mm-scope .stage-banner.sm .stage-desc{display:none}
.mm-scope .grade-tag{font-weight:700;color:var(--primary-d);font-size:14px}
.mm-scope .grade-count{font-size:12px;color:var(--muted);font-weight:400;margin-left:8px}
.mm-scope .tech-head{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:6px}
.mm-scope .kou{background:#fff8ec;border:1px dashed var(--warn);border-radius:10px;padding:10px 12px;color:#8a5a00;font-size:14px;margin:10px 0}
.mm-scope .kou b{color:var(--warn)}
.mm-scope .steps{counter-reset:s;list-style:none;padding:0;margin:8px 0}
.mm-scope .steps li{position:relative;padding:8px 8px 8px 38px;border-bottom:1px dashed var(--line)}
.mm-scope .steps li:before{counter-increment:s;content:counter(s);position:absolute;left:6px;top:8px;width:22px;height:22px;border-radius:50%;background:var(--chip);color:var(--primary-d);font-weight:700;display:flex;align-items:center;justify-content:center;font-size:13px}
.mm-scope .anim-wrap{background:#0f172a;border-radius:12px;padding:8px;margin:12px 0;position:relative;overflow:hidden}
.mm-scope .anim-wrap svg{width:100%;height:auto;display:block}
.mm-scope .anim-cap{color:#cbd5e1;font-size:12px;padding:6px 8px 2px}
.mm-scope .anim-ctrls{display:flex;gap:8px;flex-wrap:wrap;padding:6px 8px 10px}
.mm-scope .anim-ctrls .btn{background:#1e293b;color:#e2e8f0}
.mm-scope .anim-ctrls .btn:hover{background:#334155}
.mm-scope .q{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;margin-bottom:12px}
.mm-scope .q .qtext{font-size:15px;font-weight:600;margin-bottom:10px}
.mm-scope .opts{display:flex;flex-direction:column;gap:8px}
.mm-scope .opt{display:flex;gap:10px;align-items:center;border:1px solid var(--line);border-radius:9px;padding:9px 12px;cursor:pointer;transition:.12s}
.mm-scope .opt:hover{border-color:var(--primary)}
.mm-scope .opt.sel{border-color:var(--primary);background:var(--chip)}
.mm-scope .opt.correct{border-color:var(--ok);background:#e7f6ee}
.mm-scope .opt.wrong{border-color:var(--danger);background:#fdeaea}
.mm-scope .opt .mark{width:22px;height:22px;border-radius:50%;border:1px solid var(--line);flex:0 0 auto;display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--muted)}
.mm-scope .opt.correct .mark{background:var(--ok);color:#fff;border-color:var(--ok)}
.mm-scope .opt.wrong .mark{background:var(--danger);color:#fff;border-color:var(--danger)}
.mm-scope .explain{background:#f8fafc;border-left:3px solid var(--primary);padding:8px 12px;margin-top:10px;font-size:13px;border-radius:0 8px 8px 0}
.mm-scope .opts.judge{flex-direction:row;gap:10px}
.mm-scope .opt.judge{flex:1;justify-content:center;font-weight:600;font-size:15px}
.mm-scope .opt.judge .mark.judge{width:26px;height:26px;font-size:16px;border:none}
.mm-scope .opt.judge:nth-child(1) .mark.judge{background:var(--ok);color:#fff}
.mm-scope .opt.judge:nth-child(2) .mark.judge{background:var(--danger);color:#fff}
.mm-scope .qfig{background:#fbfdff;border:1px solid var(--line);border-radius:10px;padding:8px;margin:2px 0 12px;text-align:center}
.mm-scope .qfig svg{margin:0 auto}
.mm-scope .qres{font-weight:700;margin:6px 0}
.mm-scope .stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:10px;margin-bottom:14px}
.mm-scope .stat{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:12px;text-align:center}
.mm-scope .stat .n{font-size:24px;font-weight:800;color:var(--primary)}
.mm-scope .stat .l{font-size:12px;color:var(--muted)}
.mm-scope .bar{height:8px;border-radius:6px;background:#eee;overflow:hidden;margin-top:6px}
.mm-scope .bar > i{display:block;height:100%;background:var(--ok)}
.mm-scope .empty{text-align:center;color:var(--muted);padding:30px 10px}
.mm-scope .center{text-align:center}
.mm-scope .toast{position:fixed;left:50%;bottom:30px;transform:translateX(-50%) translateY(20px);background:#1f2937;color:#fff;padding:10px 18px;border-radius:24px;font-size:14px;opacity:0;pointer-events:none;transition:.25s;z-index:50}
.mm-scope .toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.mm-scope .hint{font-size:13px;color:var(--muted);background:#f8fafc;border:1px solid var(--line);border-radius:8px;padding:8px 12px;margin:8px 0}
@media(max-width:560px){.mm-scope .brand-sub{display:none}
.mm-scope .nav-link{font-size:12px;padding:6px 7px}
.mm-scope .view{padding:12px}}
/* ===== 暗色适配 =====
   变量定义在 .mm-scope 上（不污染全站），暗色通过 :root[data-theme="dark"] .mm-scope 覆盖。
   注意：Astro/lightningcss 会丢弃 html.dark{...}，必须用 :root[data-theme="dark"] 写法。 */
:root[data-theme="dark"] .mm-scope {
  --bg: #0d1117;
  --panel: #161b22;
  --ink: #e6edf3;
  --muted: #9198a1;
  --line: #2a3038;
  --chip: #1b2740;
  --primary: #5b8def;
  --primary-d: #9dbaf7;
  --lock: #6b7280;
  --shadow: 0 1px 3px rgba(0,0,0,.5), 0 1px 2px rgba(0,0,0,.3);
}
/* 上游硬编码的浅色底：暗色下逐条订正，否则浅底 + 浅字不可读 */
:root[data-theme="dark"] .mm-scope .q { background: var(--panel); }
:root[data-theme="dark"] .mm-scope .explain { background: #0d1117; border-left-color: var(--primary); }
:root[data-theme="dark"] .mm-scope .node.locked { background: #12161c; }
:root[data-theme="dark"] .mm-scope .node.mastered { border-color: #2d5a3d; }
:root[data-theme="dark"] .mm-scope .bar { background: #2a3038; }
:root[data-theme="dark"] .mm-scope .opt:hover { border-color: var(--primary); }
:root[data-theme="dark"] .mm-scope .opt.correct { background: #12331f; border-color: #2d5a3d; }
:root[data-theme="dark"] .mm-scope .opt.wrong { background: #3a1a1c; border-color: #7a3035; }
:root[data-theme="dark"] .mm-scope .tag.g { background: #12331f; color: #7ee2a8; }
:root[data-theme="dark"] .mm-scope .tag.w { background: #3a2a12; color: #f0c274; }
:root[data-theme="dark"] .mm-scope .tag.l { background: #22272e; color: #8b95a5; }
:root[data-theme="dark"] .mm-scope .kou { background: #2a2214; border-color: #5c4318; color: #f0c274; }
:root[data-theme="dark"] .mm-scope .kou b { color: #ffc861; }
:root[data-theme="dark"] .mm-scope .stage-banner.sm { background: #131a2a; }
:root[data-theme="dark"] .mm-scope .steps li { border-bottom-color: var(--line); }
:root[data-theme="dark"] .mm-scope .status-pill.lock { background: #22272e; color: #8b95a5; }
:root[data-theme="dark"] .mm-scope .status-pill.done { background: #12331f; color: #7ee2a8; }
:root[data-theme="dark"] .mm-scope .btn.ghost { background: transparent; color: var(--primary); }
:root[data-theme="dark"] .mm-scope .topbar { background: linear-gradient(90deg, #10214a, #1e3a8a); }
:root[data-theme="dark"] .mm-scope .hint { background: #0d1117; border-color: var(--line); color: var(--muted); }