/* 币小易 · 维修手册皮（bm-）
   工作台冷灰底 + 纸面卡 + 图纸蓝；警示橙只用于警告；中文用系统字体，拉丁 / 数字用自托管 woff2。
   圆角 ≤ 4px，1px 发丝线，无渐变、无大阴影。断点 ≤1024 / ≤720。 */

@font-face{font-family:"Sofia Sans Condensed";src:url("/bm/fonts/sofia-sans-condensed-latin-var.woff2") format("woff2");font-weight:400 700;font-style:normal;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Fira Mono";src:url("/bm/fonts/fira-mono-latin-500.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap;unicode-range:U+0000-00FF,U+2000-206F,U+2212}

:root{
  --bm-bench:#edf0f3;
  --bm-paper:#fcfdfd;
  --bm-ink:#1b2430;
  --bm-ink-2:#424e5b;
  --bm-mute:#677380;
  --bm-blue:#1f4e79;
  --bm-blue-d:#163b5d;
  --bm-blue-l:#dce7f2;
  --bm-blue-t:#eef3f8;
  --bm-warn:#d9531e;
  --bm-warn-l:#fbebe3;
  --bm-ok:#2e7d5b;
  --bm-ok-l:#e3f0e9;
  --bm-hair:#c9d2db;
  --bm-hair-2:#dfe4ea;
  --bm-night-2:#2a3544;
  --bm-night-t:#a9c6e2;
  --bm-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --bm-cond:"Sofia Sans Condensed","Arial Narrow",var(--bm-cn);
  --bm-mono:"Fira Mono",ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --bm-r:3px;
  --bm-wrap:1180px;
  --bm-gut:clamp(14px,3.4vw,32px);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;background:var(--bm-bench);color:var(--bm-ink);font:400 16px/1.78 var(--bm-cn);overflow-wrap:break-word}
img,svg{display:block;max-width:100%}
img{height:auto}
a{color:var(--bm-blue);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:.24em}
a:hover{color:var(--bm-blue-d);text-decoration-thickness:2px}
:focus-visible{outline:2px solid var(--bm-blue);outline-offset:2px}
h1,h2,h3{line-height:1.36;margin:0;font-weight:700;letter-spacing:.01em}
p{margin:0 0 .9em}
code{font-family:var(--bm-mono);font-size:.92em}
.bm-lat{font-family:var(--bm-cond);letter-spacing:.02em}
.bm-skiplink{position:absolute;left:-9999px;top:0;background:var(--bm-ink);color:var(--bm-paper);padding:8px 14px;z-index:30}
.bm-skiplink:focus{left:8px;top:8px}
.bm-main{max-width:var(--bm-wrap);margin:0 auto;padding:0 var(--bm-gut) 56px}

/* ── 页头 ── */
.bm-masthead{background:var(--bm-paper);border-bottom:1px solid var(--bm-hair);position:relative;z-index:20}
.bm-masthead-in{max-width:var(--bm-wrap);margin:0 auto;padding:0 var(--bm-gut);height:60px;display:flex;align-items:center;gap:22px}
.bm-logo{display:flex;align-items:center;gap:10px;color:var(--bm-ink);text-decoration:none;flex:none}
.bm-logo:hover{color:var(--bm-ink)}
.bm-logo-sq{width:32px;height:32px;display:grid;place-items:center;background:var(--bm-blue);color:var(--bm-paper);font:700 19px/1 var(--bm-cn);border-radius:2px}
.bm-logo-sq-s{width:26px;height:26px;font-size:15px}
.bm-logo-t{display:flex;flex-direction:column;line-height:1.15}
.bm-logo-t b{font-size:17px;letter-spacing:.06em}
.bm-logo-t small{font-size:11px;color:var(--bm-mute);letter-spacing:.04em}
.bm-logo-t small .bm-lat{font-weight:600;letter-spacing:.14em;color:var(--bm-blue)}
.bm-chnav{margin-left:auto}
.bm-chnav ul{list-style:none;margin:0;padding:0;display:flex;gap:2px}
.bm-chnav a{display:block;padding:0 12px;line-height:58px;color:var(--bm-ink-2);text-decoration:none;font-size:15px;border-bottom:2px solid transparent}
.bm-chnav a:hover{color:var(--bm-blue);border-bottom-color:var(--bm-hair)}
.bm-chnav a[aria-current="page"]{color:var(--bm-blue);border-bottom-color:var(--bm-blue);font-weight:600}
.bm-findbtn{flex:none;width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--bm-hair);border-radius:var(--bm-r);color:var(--bm-ink-2)}
.bm-findbtn svg{fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}
.bm-findbtn:hover{border-color:var(--bm-blue);color:var(--bm-blue)}
.bm-menubtn{display:none}

/* ── 面包屑 ── */
.bm-trail{padding:18px 0 0;font-size:13px;color:var(--bm-mute)}
.bm-trail ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px 0}
.bm-trail li+li::before{content:"›";margin:0 8px;color:var(--bm-hair)}
.bm-trail a{color:var(--bm-ink-2);text-decoration:none}
.bm-trail a:hover{color:var(--bm-blue);text-decoration:underline}

/* ── 通用小件 ── */
.bm-eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 10px;font-size:13px;color:var(--bm-blue);font-weight:600;letter-spacing:.04em}
.bm-eyebrow::before{content:"";width:8px;height:8px;background:var(--bm-blue);flex:none}
.bm-eyebrow .bm-lat{font-size:15px;font-weight:700}
.bm-sec-h{display:flex;align-items:baseline;gap:12px;font-size:21px;margin:0 0 18px}
.bm-sec-h::after{content:"";flex:1;border-bottom:1px solid var(--bm-hair);transform:translateY(-5px)}
.bm-sec-h .bm-lat{order:-1;font-size:13px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--bm-blue)}
.bm-band{margin-top:48px}
.bm-empty{padding:18px 20px;background:var(--bm-paper);border:1px dashed var(--bm-hair);border-radius:var(--bm-r);color:var(--bm-ink-2)}

/* ── 首页首屏 ── */
.bm-hero{display:grid;grid-template-columns:minmax(0,1fr) 384px;grid-template-areas:"a b" "c b";gap:22px 40px;padding:36px 0 8px;align-items:start}
.bm-hero-a{grid-area:a}
.bm-hero-b{grid-area:b}
.bm-hero-c{grid-area:c}
.bm-hero h1{font-size:clamp(25px,3.1vw,36px);letter-spacing:.02em;max-width:17em}
.bm-hero-sub{margin:14px 0 0;color:var(--bm-ink-2);max-width:40em}

.bm-qi{width:100%;border-collapse:collapse;background:var(--bm-paper);border:1px solid var(--bm-hair);font-size:15px}
.bm-qi-h{display:flex;justify-content:space-between;align-items:baseline;margin:0 0 8px;font-weight:700}
.bm-qi-h .bm-lat{font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--bm-mute);font-weight:600}
.bm-qi th{background:var(--bm-blue-l);color:var(--bm-ink);text-align:left;font-size:13px;font-weight:600;padding:7px 12px;border-bottom:1px solid var(--bm-hair)}
.bm-qi td{padding:9px 12px;border-bottom:1px solid var(--bm-hair-2);vertical-align:top}
.bm-qi tr:last-child td{border-bottom:0}
.bm-qi td:first-child{width:48px;color:var(--bm-blue);font-weight:700;font-size:15px}
.bm-qi td:last-child{width:96px;white-space:nowrap}

/* 码卡：配置参数牌 */
.bm-plate{position:relative;background:var(--bm-paper);border:1px solid var(--bm-ink);border-radius:var(--bm-r);padding:20px 22px 16px;outline:1px solid var(--bm-hair);outline-offset:4px;margin:4px}
.bm-plate::before,.bm-plate::after{content:"";position:absolute;top:8px;width:7px;height:7px;border:1px solid var(--bm-hair);border-radius:50%}
.bm-plate::before{left:8px}
.bm-plate::after{right:8px}
.bm-plate-top{display:flex;justify-content:space-between;align-items:baseline;margin:0 0 10px;padding:0 6px 8px;border-bottom:1px solid var(--bm-hair-2);font-size:13px;color:var(--bm-ink-2);font-weight:600}
.bm-plate-top .bm-lat{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--bm-mute)}
.bm-plate-row{display:flex;gap:10px;align-items:stretch}
.bm-plate-code{flex:1;min-width:0;display:flex;align-items:center;justify-content:center;font:500 31px/1 var(--bm-mono);letter-spacing:.12em;color:var(--bm-ink);background:var(--bm-bench);border:1px solid var(--bm-hair);border-radius:2px;padding:11px 8px;user-select:all;-webkit-user-select:all}
.bm-copybtn{flex:none;border:0;border-radius:var(--bm-r);background:var(--bm-blue);color:var(--bm-paper);font:600 15px/1 var(--bm-cn);padding:0 16px;cursor:pointer;min-height:48px}
.bm-copybtn:hover{background:var(--bm-blue-d)}
.bm-copybtn.is-done{background:var(--bm-ok)}
.bm-plate-gain{margin:12px 0 12px;font-size:15px;line-height:1.6;font-weight:600}
.bm-plate-go{display:flex;align-items:center;justify-content:center;gap:8px;min-height:48px;background:var(--bm-ink);color:var(--bm-paper);text-decoration:none;font-weight:600;border-radius:var(--bm-r);font-size:16px}
.bm-plate-go svg{fill:none;stroke:currentColor;stroke-width:1.8}
.bm-plate-go:hover{background:var(--bm-night-2);color:var(--bm-paper)}
.bm-plate-note{margin:10px 0 0;font-size:12.5px;line-height:1.6;color:var(--bm-mute)}
.bm-plate-page{margin:28px 4px}

/* 推荐先读：编辑批注 */
.bm-pick{margin-top:30px;background:var(--bm-paper);border:1px solid var(--bm-hair);border-left:4px solid var(--bm-warn);border-radius:0 var(--bm-r) var(--bm-r) 0;padding:20px 26px 18px;max-width:860px}
.bm-pick-eye{margin:0 0 6px;font-size:13px;font-weight:600;color:var(--bm-warn);letter-spacing:.04em}
.bm-pick h2{font-size:20px;margin:0 0 10px}
.bm-pick p{color:var(--bm-ink-2)}
.bm-pick-go{margin:0}
.bm-pick-go a{font-weight:600}
.bm-pick-go a::after{content:" →"}

/* 四章 */
.bm-chs{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.bm-ch a{display:flex;flex-direction:column;height:100%;background:var(--bm-paper);border:1px solid var(--bm-hair);border-radius:var(--bm-r);padding:16px 18px 14px;color:var(--bm-ink);text-decoration:none;position:relative}
.bm-ch a:hover{border-color:var(--bm-blue)}
.bm-ch-code{font-size:46px;line-height:1;font-weight:700;color:var(--bm-blue)}
.bm-ch-plate{position:absolute;top:18px;right:18px;font-size:12px;color:var(--bm-mute);border:1px solid var(--bm-hair);padding:1px 7px;border-radius:2px}
.bm-ch b{font-size:17px;margin:12px 0 4px}
.bm-ch-s{font-size:14px;color:var(--bm-ink-2);line-height:1.65;flex:1}
.bm-ch-n{margin-top:12px;padding-top:9px;border-top:1px solid var(--bm-hair-2);font-size:13px;color:var(--bm-mute)}
.bm-ch-n .bm-lat{font-size:16px;color:var(--bm-ink);font-weight:700}

/* 最近更新 */
.bm-revs{list-style:none;margin:0;padding:0;background:var(--bm-paper);border:1px solid var(--bm-hair);border-radius:var(--bm-r)}
.bm-revs li+li{border-top:1px solid var(--bm-hair-2)}
.bm-revs a{display:grid;grid-template-columns:72px minmax(0,1fr) auto;gap:16px;align-items:center;padding:10px 16px;color:var(--bm-ink);text-decoration:none}
.bm-revs a:hover b{color:var(--bm-blue);text-decoration:underline}
.bm-revs-b{display:flex;flex-direction:column}
.bm-revs-c{font-size:12.5px;color:var(--bm-mute)}
.bm-revs b{font-weight:600}
.bm-revs time{font-size:14px;color:var(--bm-mute)}

/* 图纸示意 */
.bm-dgm{fill:none}
.bm-dgm-l{stroke:var(--bm-blue);stroke-width:1.4;stroke-linecap:round;stroke-linejoin:round}
.bm-dgm text{fill:var(--bm-mute);stroke:none;font:600 10px var(--bm-cond)}
.bm-dgm-s{width:72px;height:43px;background:var(--bm-blue-t);border:1px solid var(--bm-hair-2);border-radius:2px}
.bm-dgm-h{width:150px;height:90px;flex:none;background:var(--bm-blue-t);border:1px solid var(--bm-hair-2);border-radius:2px}

/* 全部条目 */
.bm-dir{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px 32px;background:var(--bm-paper);border:1px solid var(--bm-hair);border-radius:var(--bm-r);padding:22px 24px}
.bm-dir h3{display:flex;gap:8px;align-items:baseline;font-size:15px;padding-bottom:6px;border-bottom:1px solid var(--bm-hair);margin-bottom:8px}
.bm-dir h3 .bm-lat{color:var(--bm-blue);font-size:17px}
.bm-dir ul{list-style:none;margin:0;padding:0;font-size:14.5px}
.bm-dir li{padding:3px 0}
.bm-dir a{color:var(--bm-ink);text-decoration:none}
.bm-dir a:hover{color:var(--bm-blue);text-decoration:underline}

/* 工具卡 */
.bm-tcards{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.bm-tcard{background:var(--bm-paper);border:1px solid var(--bm-hair);border-radius:var(--bm-r);padding:18px 20px;display:flex;flex-direction:column;gap:6px}
.bm-tcard-k{align-self:flex-start;font-size:13px;font-weight:700;color:var(--bm-paper);background:var(--bm-ink);padding:2px 8px;border-radius:2px;letter-spacing:.08em}
.bm-tcard b{font-size:17px}
.bm-tcard p{margin:0;color:var(--bm-ink-2);font-size:14.5px}
.bm-tcard a{font-weight:600;margin-top:4px}
.bm-tcards-list{margin-top:22px}

/* 常见问题（全部展开） */
.bm-faq{margin-top:48px}
.bm-qa{background:var(--bm-paper);border:1px solid var(--bm-hair);border-radius:var(--bm-r);padding:14px 20px 4px;margin-bottom:10px}
.bm-qa-q{display:flex;gap:10px;font-size:16.5px;margin-bottom:6px}
.bm-qa-q::before{content:"Q";flex:none;width:22px;height:22px;display:grid;place-items:center;background:var(--bm-blue);color:var(--bm-paper);font:700 13px/1 var(--bm-cond);border-radius:2px;margin-top:3px}
.bm-qa-a{padding-left:32px;color:var(--bm-ink-2)}

/* ── 列表页（章节 / 问题） ── */
.bm-lh{display:flex;gap:26px;align-items:flex-start;padding:26px 0 24px;border-bottom:1px solid var(--bm-hair);margin-bottom:22px}
.bm-lh-code{flex:none;width:84px;height:84px;display:grid;place-items:center;background:var(--bm-paper);border:1px solid var(--bm-ink);border-radius:var(--bm-r);font-size:52px;font-weight:700;color:var(--bm-blue);line-height:1}
.bm-lh h1{font-size:clamp(23px,2.6vw,31px)}
.bm-lh-lead{margin:12px 0 0;color:var(--bm-ink-2);max-width:46em}
.bm-lh-lead p:last-child{margin-bottom:0}
.bm-lh-n{margin:10px 0 0;font-size:14px;color:var(--bm-mute)}
.bm-lh-n .bm-lat{font-size:16px;color:var(--bm-ink);font-weight:700}
.bm-list{list-style:none;margin:0;padding:0;background:var(--bm-paper);border:1px solid var(--bm-hair);border-radius:var(--bm-r)}
.bm-row{display:grid;grid-template-columns:70px minmax(0,1fr) 98px;gap:16px;padding:14px 18px;align-items:baseline}
.bm-row+.bm-row{border-top:1px solid var(--bm-hair-2)}
.bm-row-no{font-size:15px;font-weight:700;color:var(--bm-blue)}
.bm-row-t{font-size:16.5px;font-weight:600;color:var(--bm-ink);text-decoration:none}
.bm-row-t:hover{color:var(--bm-blue);text-decoration:underline}
.bm-row-b p{margin:4px 0 0;font-size:14.5px;color:var(--bm-ink-2);line-height:1.65}
.bm-row-d{font-size:14px;color:var(--bm-mute);text-align:right}
.bm-qlist{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.bm-qlist li{background:var(--bm-paper);border:1px solid var(--bm-hair);border-radius:var(--bm-r);padding:14px 18px}
.bm-qlist a{font-weight:600}
.bm-qlist span{margin-left:8px;color:var(--bm-mute)}
.bm-qlist p{margin:6px 0 0;font-size:14px;color:var(--bm-ink-2)}

/* 分页 */
.bm-pg{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:22px}
.bm-pg a,.bm-pg span{display:inline-block;padding:6px 14px;border:1px solid var(--bm-hair);border-radius:var(--bm-r);background:var(--bm-paper);text-decoration:none;font-size:14px}
.bm-pg .bm-pg-off{color:var(--bm-hair);background:transparent}
.bm-pg-nums{list-style:none;margin:0;padding:0;display:flex;gap:6px}
.bm-pg-nums span[aria-current]{background:var(--bm-blue);color:var(--bm-paper);border-color:var(--bm-blue)}
.bm-pg-of{flex-basis:100%;margin:0;font-size:13px;color:var(--bm-mute)}

/* 总目录 */
.bm-mulu{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.bm-mulu-g{background:var(--bm-paper);border:1px solid var(--bm-hair);border-radius:var(--bm-r);padding:16px 20px}
.bm-mulu-g h2{display:flex;gap:10px;align-items:baseline;font-size:17px;padding-bottom:8px;border-bottom:1px solid var(--bm-hair);margin-bottom:8px}
.bm-mulu-g h2 .bm-lat{color:var(--bm-blue);font-size:20px}
.bm-mulu-g h2 small{margin-left:auto;font-weight:400;font-size:13px;color:var(--bm-mute)}
.bm-mulu-g ol{list-style:none;margin:0;padding:0}
.bm-mulu-g li{display:flex;gap:10px;padding:4px 0;font-size:15px}
.bm-mulu-g li .bm-lat{color:var(--bm-mute);flex:none;width:22px}

/* ── 文章页 ── */
.bm-art-h{display:flex;gap:28px;align-items:flex-start;justify-content:space-between;padding:24px 0 22px;border-bottom:1px solid var(--bm-hair)}
.bm-art-h h1{font-size:clamp(24px,2.7vw,33px);max-width:22em}
.bm-meta{display:flex;flex-wrap:wrap;gap:4px 18px;margin:12px 0 0;font-size:13.5px;color:var(--bm-mute)}
.bm-meta .bm-lat{font-size:15px;color:var(--bm-ink-2)}
.bm-meta-ok{color:var(--bm-ok)}
.bm-meta-ok::before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--bm-ok);margin-right:6px;vertical-align:1px}
.bm-meta-tags{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-top:12px;font-size:13.5px}
.bm-meta-tags-h{color:var(--bm-mute)}
.bm-meta-tags ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.bm-meta-tags li>*{display:inline-block;padding:1px 9px;border-radius:2px;background:var(--bm-blue-l);color:var(--bm-ink-2);text-decoration:none}
.bm-meta-tags li>a{color:var(--bm-blue)}
.bm-art-grid{display:grid;grid-template-columns:minmax(0,1fr) 272px;gap:36px;align-items:start;margin-top:26px}
.bm-art-body{background:var(--bm-paper);border:1px solid var(--bm-hair);border-radius:var(--bm-r);padding:30px clamp(18px,4vw,44px) 34px;min-width:0}
.bm-art-side{position:sticky;top:20px}
.bm-toc-h{margin:0 0 8px;font-size:13px;font-weight:700;color:var(--bm-ink-2);letter-spacing:.06em}
.bm-toc-ol{list-style:none;margin:0;padding:0;counter-reset:bm-t2;border-left:1px solid var(--bm-hair);font-size:14px}
.bm-toc-ol a{display:block;padding:4px 0 4px 14px;margin-left:-1px;border-left:2px solid transparent;color:var(--bm-ink-2);text-decoration:none;line-height:1.5}
.bm-toc-ol a:hover{color:var(--bm-blue)}
.bm-toc-ol a.is-on{border-left-color:var(--bm-blue);color:var(--bm-blue);font-weight:600}
.bm-toc-l2{counter-increment:bm-t2}
.bm-toc-l2>a::before{font-family:var(--bm-cond);font-weight:700;color:var(--bm-blue);margin-right:7px}
.bm-toc-l3>a{padding-left:34px;font-size:13px}
.bm-toc-inline{display:none;margin:0 0 20px;border:1px solid var(--bm-hair);border-radius:var(--bm-r);background:var(--bm-blue-t)}
.bm-toc-inline summary{cursor:pointer;padding:10px 14px;font-weight:600;font-size:14px}
.bm-toc-inline .bm-toc-ol{margin:0 14px 12px}
.bm-ch-A .bm-toc-l2>a::before{content:"A." counter(bm-t2)}
.bm-ch-B .bm-toc-l2>a::before{content:"B." counter(bm-t2)}
.bm-ch-C .bm-toc-l2>a::before{content:"C." counter(bm-t2)}
.bm-ch-D .bm-toc-l2>a::before{content:"D." counter(bm-t2)}

.bm-tldr{margin:0 0 24px;padding:14px 18px 6px;border:1px solid var(--bm-blue-l);background:var(--bm-blue-t);border-radius:var(--bm-r)}
.bm-tldr-h{margin:0 0 4px;font-weight:700;font-size:14px;color:var(--bm-blue)}
.bm-tldr ul{margin:0 0 8px;padding-left:1.2em}
.bm-tldr li{margin:2px 0}
.bm-sym caption{caption-side:top;text-align:left;font-weight:700;font-size:14px;padding:0 0 6px;color:var(--bm-ink-2)}
.bm-tablewrap .bm-sym{min-width:0}
.bm-sym td:first-child{width:42%;color:var(--bm-ink-2)}
.bm-sym td:first-child::before{content:"▸ ";color:var(--bm-blue)}

/* 正文 */
.bm-text{counter-reset:bm-h2 bm-fig;font-size:16.5px;line-height:1.85}
.bm-text>*:first-child{margin-top:0}
.bm-text h2{counter-increment:bm-h2;font-size:21px;margin:38px 0 14px;padding-bottom:8px;border-bottom:1px solid var(--bm-hair);scroll-margin-top:16px}
.bm-text h2::before{font-family:var(--bm-cond);font-weight:700;color:var(--bm-blue);margin-right:10px;font-size:1.05em}
.bm-ch-A .bm-text h2::before{content:"A." counter(bm-h2)}
.bm-ch-B .bm-text h2::before{content:"B." counter(bm-h2)}
.bm-ch-C .bm-text h2::before{content:"C." counter(bm-h2)}
.bm-ch-D .bm-text h2::before{content:"D." counter(bm-h2)}
.bm-text h3{font-size:17.5px;margin:26px 0 10px;scroll-margin-top:16px}
.bm-text ul,.bm-text ol{padding-left:1.4em;margin:0 0 1em}
.bm-text li{margin:4px 0}
.bm-text strong{font-weight:700;color:var(--bm-ink)}
.bm-text blockquote{margin:0 0 1em;padding:4px 0 4px 16px;border-left:3px solid var(--bm-hair);color:var(--bm-ink-2)}

/* 截图：细线框 + 图号 */
.bm-fig{margin:24px 0;counter-increment:bm-fig}
.bm-fig-frame{padding:10px;background:var(--bm-bench);border:1px solid var(--bm-hair);border-radius:2px}
.bm-fig-frame img{margin:0 auto;border:1px solid var(--bm-hair-2);background:var(--bm-paper)}
.bm-fig figcaption{display:flex;gap:10px;align-items:baseline;margin-top:8px;font-size:13.5px;line-height:1.6;color:var(--bm-ink-2)}
.bm-fig-no{flex:none;font:700 14px/1.6 var(--bm-cond);color:var(--bm-blue);letter-spacing:.04em}
.bm-ch-A .bm-fig-no::before{content:"图 A-" counter(bm-fig)}
.bm-ch-B .bm-fig-no::before{content:"图 B-" counter(bm-fig)}
.bm-ch-C .bm-fig-no::before{content:"图 C-" counter(bm-fig)}
.bm-ch-D .bm-fig-no::before{content:"图 D-" counter(bm-fig)}
.bm-tool .bm-fig-no::before,.bm-doc .bm-fig-no::before{content:"图 " counter(bm-fig)}

/* 步骤块 */
.bm-steps{margin:22px 0}
.bm-steps ol{list-style:none;padding:0;margin:0;counter-reset:bm-st}
.bm-steps li{counter-increment:bm-st;position:relative;padding:5px 0 16px 54px;margin:0}
.bm-steps li::before{content:counter(bm-st);position:absolute;left:0;top:0;width:36px;height:36px;display:grid;place-items:center;border:2px solid var(--bm-blue);border-radius:50%;background:var(--bm-paper);color:var(--bm-blue);font:700 18px/1 var(--bm-cond);z-index:1}
.bm-steps li::after{content:"";position:absolute;left:17px;top:36px;bottom:0;border-left:2px solid var(--bm-blue-l)}
.bm-steps li:last-child::after{display:none}
.bm-steps li:last-child{padding-bottom:4px}

/* 提示块 */
.bm-call{margin:22px 0;border:1px solid var(--bm-hair);border-left-width:4px;border-radius:0 var(--bm-r) var(--bm-r) 0;padding:12px 18px 4px;font-size:15.5px}
.bm-call-h{margin:0 0 4px;font-weight:700;font-size:14.5px}
.bm-call-b p{margin-bottom:.7em}
.bm-call-note{background:var(--bm-blue-t);border-color:var(--bm-blue-l);border-left-color:var(--bm-blue)}
.bm-call-note .bm-call-h{color:var(--bm-blue)}
.bm-call-tip{background:var(--bm-ok-l);border-color:var(--bm-ok-l);border-left-color:var(--bm-ok)}
.bm-call-tip .bm-call-h{color:var(--bm-ok)}
.bm-call-warn{background:var(--bm-warn-l);border-color:var(--bm-warn-l);border-left-color:var(--bm-warn)}
.bm-call-warn .bm-call-h{color:var(--bm-warn)}
.bm-call-stop{background:var(--bm-warn);border-color:var(--bm-warn);color:var(--bm-paper)}
.bm-call-stop .bm-call-h::before{content:"!";display:inline-grid;place-items:center;width:20px;height:20px;margin-right:8px;border:2px solid var(--bm-paper);border-radius:50%;font:700 13px/1 var(--bm-cond)}
.bm-call-stop a{color:var(--bm-paper)}

/* 表格 */
.bm-tablewrap{overflow-x:auto;margin:22px 0;border:1px solid var(--bm-hair);border-radius:var(--bm-r);background:var(--bm-paper)}
.bm-tablewrap table{width:100%;border-collapse:collapse;font-size:15px;line-height:1.65;min-width:460px}
.bm-tablewrap th,.bm-tablewrap td{padding:9px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--bm-hair-2)}
.bm-tablewrap thead th{background:var(--bm-blue-l);font-weight:600;font-size:14px;border-bottom:1px solid var(--bm-hair)}
.bm-tablewrap tbody tr:last-child>*{border-bottom:0}
.bm-tablewrap caption{padding:10px 14px 2px}
.bm-al-center{text-align:center!important}
.bm-al-right{text-align:right!important}
.bm-fixed caption{caption-side:top;text-align:left;font-weight:700;font-size:14.5px;padding-bottom:8px}
.bm-fixed-tag{display:inline-block;width:22px;height:22px;line-height:22px;text-align:center;margin-right:8px;background:var(--bm-ink);color:var(--bm-paper);font-size:12px;border-radius:2px;vertical-align:1px}
.bm-fixed tbody th{font-weight:700;white-space:nowrap;background:var(--bm-blue-t)}

/* 排错分支 */
.bm-br{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0;margin:22px 0;border:1px solid var(--bm-hair);border-radius:var(--bm-r);overflow:hidden;font-size:15.5px}
.bm-br>div{padding:12px 16px 4px}
.bm-br p{margin-bottom:.6em}
.bm-br-see{background:var(--bm-bench);position:relative}
.bm-br-see::after{content:"";position:absolute;right:-9px;top:50%;width:16px;height:16px;margin-top:-8px;background:var(--bm-paper);border-top:1px solid var(--bm-hair);border-right:1px solid var(--bm-hair);transform:rotate(45deg);z-index:1}
.bm-br-do{background:var(--bm-paper);padding-left:24px!important}
.bm-br-k{margin:0 0 2px!important;font-size:12.5px;font-weight:700;color:var(--bm-mute);letter-spacing:.06em}
.bm-br-do .bm-br-k{color:var(--bm-blue)}
.bm-br-stop{grid-column:1/-1;margin:0!important;padding:9px 16px;border-top:1px solid var(--bm-hair);background:var(--bm-warn-l);font-size:14.5px}
.bm-br-stop b{color:var(--bm-warn)}

/* 本页依据 */
.bm-basis{margin-top:40px;padding:16px 20px 8px;border:1px solid var(--bm-hair);border-radius:var(--bm-r);background:var(--bm-blue-t)}
.bm-basis .bm-sec-h{font-size:17px;margin-bottom:10px}
.bm-basis ol{list-style:none;margin:0 0 8px;padding:0}
.bm-basis li{display:flex;flex-wrap:wrap;justify-content:space-between;gap:2px 14px;padding:6px 0;border-bottom:1px dashed var(--bm-hair);font-size:15px}
.bm-basis li:last-child{border-bottom:0}
.bm-basis-t::before{content:"✓";color:var(--bm-ok);font-weight:700;margin-right:8px}
.bm-basis-c{color:var(--bm-mute);font-size:14px}
.bm-basis-n{font-size:13px;color:var(--bm-mute);margin:4px 0 6px}
.bm-basisline{display:flex;flex-wrap:wrap;gap:4px 10px;font-size:14px;color:var(--bm-ink-2)}
.bm-basisline-k{font-weight:700;color:var(--bm-ok)}

/* 相关条目 */
.bm-rel{margin-top:40px}
.bm-rel .bm-sec-h{font-size:17px}
.bm-rel ul{list-style:none;margin:0;padding:0}
.bm-rel li{padding:10px 0;border-top:1px solid var(--bm-hair-2)}
.bm-rel a{font-weight:600;text-decoration:none;color:var(--bm-ink)}
.bm-rel a:hover{color:var(--bm-blue);text-decoration:underline}
.bm-rel a .bm-lat{color:var(--bm-blue);margin-right:10px}
.bm-rel p{margin:2px 0 0;font-size:14px;color:var(--bm-ink-2)}
.bm-art-body .bm-faq{margin-top:40px}
.bm-art-body .bm-faq .bm-sec-h{font-size:17px}
.bm-art-body .bm-qa{background:transparent}

/* ── 工具页 ── */
.bm-tool-h{padding:24px 0 20px}
.bm-tool-h h1{font-size:clamp(24px,2.7vw,33px)}
.bm-tool-lead{margin:10px 0 0;color:var(--bm-ink-2);max-width:46em}
.bm-calc{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);border:1px solid var(--bm-ink);border-radius:var(--bm-r);overflow:hidden}
.bm-calc-in{background:var(--bm-paper);padding:22px 24px 10px}
.bm-field{margin-bottom:18px}
.bm-field label{display:flex;justify-content:space-between;align-items:baseline;font-weight:700;font-size:15px;margin-bottom:6px}
.bm-field output{font-size:20px;color:var(--bm-blue)}
.bm-input{display:flex;border:1px solid var(--bm-hair);border-radius:var(--bm-r);background:var(--bm-paper)}
.bm-input:focus-within{border-color:var(--bm-blue);outline:1px solid var(--bm-blue)}
.bm-input input{flex:1;min-width:0;border:0;background:transparent;font:500 20px/1 var(--bm-mono);padding:11px 12px;color:var(--bm-ink)}
.bm-input input:focus{outline:none}
.bm-unit{display:grid;place-items:center;padding:0 12px;border-left:1px solid var(--bm-hair);color:var(--bm-mute);font-size:14px;background:var(--bm-bench)}
.bm-hint{margin:6px 0 0;font-size:13px;color:var(--bm-mute);line-height:1.6}
.bm-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.bm-chip{border:1px solid var(--bm-hair);background:var(--bm-paper);border-radius:2px;padding:3px 10px;font:500 13px/1.5 var(--bm-mono);color:var(--bm-ink-2);cursor:pointer}
.bm-chip:hover,.bm-chip.is-on{border-color:var(--bm-blue);color:var(--bm-blue);background:var(--bm-blue-t)}
.bm-field input[type=range]{width:100%;accent-color:var(--bm-blue);margin:6px 0 0}
.bm-range-ends{display:flex;justify-content:space-between;font-size:13px;color:var(--bm-mute)}
.bm-calc-out{background:var(--bm-ink);color:var(--bm-paper);padding:24px 26px 20px;display:flex;flex-direction:column}
.bm-out-k{margin:0;font-size:14px;color:var(--bm-night-t);font-weight:600;letter-spacing:.04em}
.bm-out-big{margin:4px 0 4px;display:flex;align-items:baseline;gap:10px}
.bm-out-big .bm-lat{font:500 clamp(40px,5.2vw,58px)/1.1 var(--bm-mono);letter-spacing:-.01em}
.bm-out-big small.bm-lat{font:600 18px/1 var(--bm-cond);letter-spacing:.08em;color:var(--bm-night-t)}
.bm-out-line{margin:0 0 16px;font-size:14.5px;color:var(--bm-blue-l)}
.bm-bar{display:flex;height:14px;border:1px solid var(--bm-night-t);border-radius:2px;overflow:hidden;background:var(--bm-night-2)}
.bm-bar-keep{background:var(--bm-night-2);width:100%}
.bm-bar-back{background:var(--bm-night-t);width:0}
.bm-bar-key{display:flex;flex-wrap:wrap;gap:4px 16px;margin:8px 0 16px;font-size:12.5px;color:var(--bm-blue-l)}
.bm-bar-key i{display:inline-block;width:10px;height:10px;margin-right:6px;vertical-align:-1px;border:1px solid var(--bm-night-t)}
.bm-key-keep{background:var(--bm-night-2)}
.bm-key-back{background:var(--bm-night-t)}
.bm-out-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;margin:0;background:var(--bm-night-2);border:1px solid var(--bm-night-2)}
.bm-out-grid div{background:var(--bm-ink);padding:9px 10px}
.bm-out-grid dt{font-size:12.5px;color:var(--bm-night-t)}
.bm-out-grid dd{margin:2px 0 0;font:500 17px/1.3 var(--bm-mono)}
.bm-out-note{margin:14px 0 0;font-size:13px;color:var(--bm-blue-l);line-height:1.6}
.bm-guide{margin-top:28px;background:var(--bm-paper);border:1px solid var(--bm-hair);border-radius:var(--bm-r)}
.bm-guide>summary{cursor:pointer;padding:14px 22px;font-weight:700;border-bottom:1px solid var(--bm-hair-2)}
.bm-guide>.bm-text{padding:8px clamp(18px,4vw,40px) 22px}
/* 工具页 · 资格自查（单选题 + 结论卡） */
.bm-qz [hidden]{display:none!important}
.bm-qz-in{padding:18px 24px 8px}
.bm-qz-q{border:0;border-bottom:1px solid var(--bm-hair-2);margin:0 0 14px;padding:0 0 14px;min-width:0}
.bm-qz-q:last-child{border-bottom:0}
.bm-qz-q legend{display:flex;gap:10px;align-items:baseline;padding:0;font-weight:700;font-size:15px;line-height:1.55;margin-bottom:8px}
.bm-qz-n{flex:none;display:inline-grid;place-items:center;width:22px;height:22px;border:1px solid var(--bm-blue);border-radius:2px;color:var(--bm-blue);font:600 14px/1 var(--bm-cond)}
.bm-qz-q.is-done .bm-qz-n{background:var(--bm-blue);color:var(--bm-paper)}
.bm-qz-opts{display:flex;flex-wrap:wrap;gap:6px;padding-left:32px}
.bm-qz-opt{position:relative;cursor:pointer}
.bm-qz-opt input{position:absolute;opacity:0;width:1px;height:1px}
.bm-qz-opt span{display:block;border:1px solid var(--bm-hair);border-radius:2px;background:var(--bm-paper);padding:5px 14px;font-size:14.5px;color:var(--bm-ink-2)}
.bm-qz-opt:hover span{border-color:var(--bm-blue)}
.bm-qz-opt input:checked+span{border-color:var(--bm-blue);background:var(--bm-blue-t);color:var(--bm-blue);font-weight:700;box-shadow:inset 0 -2px 0 var(--bm-blue)}
.bm-qz-opt input:focus-visible+span{outline:2px solid var(--bm-blue);outline-offset:1px}
.bm-qz .bm-hint{padding-left:32px}
.bm-qz-k{display:flex;justify-content:space-between;gap:10px}
.bm-qz-prog{font-weight:400;color:var(--bm-blue-l)}
.bm-qz-prog b{font:500 16px/1 var(--bm-mono);color:var(--bm-paper)}
.bm-qz-meter{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:3px;margin:10px 0 18px}
.bm-qz-meter i{height:6px;background:var(--bm-night-2);border-radius:1px}
.bm-qz-meter i.is-on{background:var(--bm-night-t)}
.bm-qz-wait{margin:8px 0 0;font-size:15px;color:var(--bm-blue-l);line-height:1.7}
.bm-qz-verdict{margin:0 0 16px;font-size:clamp(25px,2.6vw,32px);line-height:1.3;font-weight:700;color:var(--bm-paper)}
.bm-qz-lanes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin:0 0 16px;background:var(--bm-night-2);border:1px solid var(--bm-night-2)}
.bm-qz-lanes div{background:var(--bm-ink);padding:9px 12px 10px;border-top:3px solid var(--bm-night-2)}
.bm-qz-lanes dt{font-size:12.5px;color:var(--bm-night-t)}
.bm-qz-lanes dd{margin:3px 0 0;font-size:17px;font-weight:700;line-height:1.35}
.bm-qz-lanes .is-ok{border-top-color:var(--bm-ok)}.bm-qz-lanes .is-ok dd{color:var(--bm-ok-l)}
.bm-qz-lanes .is-no{border-top-color:var(--bm-warn)}.bm-qz-lanes .is-no dd{color:var(--bm-warn-l)}
.bm-qz-lanes .is-ask{border-top-color:var(--bm-night-t)}.bm-qz-lanes .is-ask dd{color:var(--bm-paper)}
.bm-qz-lanes .is-wait{border-top-style:dashed;border-top-color:var(--bm-night-t)}.bm-qz-lanes .is-wait dd{color:var(--bm-blue-l)}
.bm-qz-p{margin:0 0 10px;font-size:15px;line-height:1.75;color:var(--bm-blue-l)}
.bm-qz-list{list-style:none;margin:4px 0 12px;padding:0;border-top:1px solid var(--bm-night-2)}
.bm-qz-list li{display:grid;grid-template-columns:auto minmax(0,1fr);gap:10px;align-items:baseline;padding:7px 0;border-bottom:1px solid var(--bm-night-2);font-size:14.5px;line-height:1.55}
.bm-qz-list b{font-size:12px;font-weight:700;padding:1px 7px;border-radius:2px;white-space:nowrap}
.bm-qz-list .is-ok b{background:var(--bm-ok);color:var(--bm-paper)}
.bm-qz-list .is-sys b{border:1px solid var(--bm-night-t);color:var(--bm-night-t)}
.bm-qz-list .is-no b{background:var(--bm-warn);color:var(--bm-paper)}
.bm-qz-extra{border-left:3px solid var(--bm-night-t);padding-left:10px}
.bm-qz-basis{margin-top:auto;padding-top:12px;border-top:1px dashed var(--bm-night-2)}
.bm-qz-basis-k{margin:0 0 4px;font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--bm-night-t)}
.bm-qz-basis p{margin:0 0 6px;font-size:12.5px;line-height:1.65;color:var(--bm-blue-l)}
.bm-qz-basis span{color:var(--bm-night-t)}
.bm-qz-res{display:flex;flex-direction:column;flex:1}

/* ── 站务页 / 搜索 / 404 ── */
.bm-doc{background:var(--bm-paper);border:1px solid var(--bm-hair);border-radius:var(--bm-r);padding:26px clamp(18px,4vw,44px) 30px;margin-top:20px;max-width:860px}
.bm-doc-h{padding-bottom:16px;border-bottom:1px solid var(--bm-hair);margin-bottom:24px}
.bm-doc-h h1{font-size:clamp(23px,2.6vw,30px)}
.bm-doc .bm-text h2::before{content:counter(bm-h2) "."}
.bm-lh-tight{margin-bottom:16px}
.bm-find{max-width:680px}
.bm-find label{display:block;font-weight:700;margin-bottom:6px}
.bm-find-row{display:flex;gap:8px}
.bm-find-row input{flex:1;min-width:0;border:1px solid var(--bm-hair);border-radius:var(--bm-r);padding:11px 12px;font:16px var(--bm-cn);background:var(--bm-paper);color:var(--bm-ink)}
.bm-find-row input:focus{outline:2px solid var(--bm-blue);outline-offset:-1px;border-color:var(--bm-blue)}
.bm-find-row button{border:0;border-radius:var(--bm-r);background:var(--bm-blue);color:var(--bm-paper);font:600 15px var(--bm-cn);padding:0 20px;cursor:pointer}
.bm-find-state{margin:16px 0 8px;color:var(--bm-mute);font-size:14px;min-height:1.5em}
.bm-find-res{list-style:none;margin:0;padding:0;max-width:860px}
.bm-find-res li{background:var(--bm-paper);border:1px solid var(--bm-hair);border-radius:var(--bm-r);padding:12px 16px;margin-bottom:8px}
.bm-find-res a{font-weight:600}
.bm-find-res span{display:block;font-size:12.5px;color:var(--bm-mute)}
.bm-find-res p{margin:4px 0 0;font-size:14px;color:var(--bm-ink-2)}
.bm-nf{padding:40px 0 10px;max-width:900px}
.bm-nf h1{font-size:clamp(26px,3vw,36px);margin-bottom:12px}
.bm-nf>p{color:var(--bm-ink-2);max-width:40em}
.bm-nf .bm-find{margin:24px 0 32px}
.bm-chs-s{grid-template-columns:repeat(2,minmax(0,1fr))}
.bm-chs-s .bm-ch-code{font-size:32px}

/* ── 页脚 ── */
.bm-colophon{border-top:3px solid var(--bm-blue);background:var(--bm-paper);margin-top:24px}
.bm-colophon-in{max-width:var(--bm-wrap);margin:0 auto;padding:26px var(--bm-gut) 30px;display:grid;grid-template-columns:200px minmax(0,1fr);gap:14px 40px;font-size:13.5px;color:var(--bm-ink-2)}
.bm-colophon-id{display:flex;gap:10px;align-items:center}
.bm-colophon-id p{margin:0}
.bm-colophon-id .bm-lat{color:var(--bm-mute);letter-spacing:.14em;font-size:12px}
.bm-colophon-say p{margin:0 0 4px;line-height:1.7}
.bm-colophon-links{grid-column:2;list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px 18px}
.bm-colophon-links a{color:var(--bm-ink-2)}
.bm-colophon-c{grid-column:2;margin:0;color:var(--bm-mute);font-size:12.5px}
.bm-colophon-c a{color:var(--bm-mute)}

/* ── ≤1024 ── */
@media (max-width:1024px){
  .bm-hero{grid-template-columns:minmax(0,1fr) 340px;gap:20px 26px}
  .bm-chs{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bm-dir{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bm-art-grid{grid-template-columns:minmax(0,1fr)}
  .bm-art-side{display:none}
  .bm-toc-inline{display:block}
  .bm-chnav a{padding:0 8px;font-size:14px}
}

/* ── ≤720 ── */
@media (max-width:720px){
  body{font-size:15.5px}
  .bm-masthead-in{height:54px;gap:10px}
  .bm-logo-t small{display:none}
  .bm-chnav{display:none;position:absolute;left:0;right:0;top:54px;background:var(--bm-paper);border-bottom:1px solid var(--bm-hair);margin:0}
  .bm-chnav ul{flex-direction:column;gap:0;padding:4px var(--bm-gut) 10px}
  .bm-chnav a{line-height:46px;border-bottom:1px solid var(--bm-hair-2);border-left:3px solid transparent;padding:0 10px}
  .bm-chnav a[aria-current="page"]{border-bottom-color:var(--bm-hair-2);border-left-color:var(--bm-blue)}
  .bm-chnav-open .bm-chnav{display:block}
  .bm-findbtn{margin-left:auto}
  .bm-menubtn{display:flex;align-items:center;gap:7px;height:36px;padding:0 11px;border:1px solid var(--bm-hair);border-radius:var(--bm-r);color:var(--bm-ink);text-decoration:none;font-size:14px}
  .bm-menubtn-bars{width:14px;height:10px;border-top:2px solid currentColor;border-bottom:2px solid currentColor;position:relative}
  .bm-menubtn-bars::after{content:"";position:absolute;left:0;right:0;top:2px;border-top:2px solid currentColor}
  .bm-hero{grid-template-columns:minmax(0,1fr);grid-template-areas:"a" "b" "c";gap:16px;padding:14px 0 0}
  .bm-hero h1{font-size:22px;line-height:1.4}
  .bm-hero-sub{margin-top:8px;font-size:14px;line-height:1.65}
  .bm-eyebrow{margin-bottom:6px;font-size:12.5px}
  .bm-plate{padding:14px 14px 12px;outline-offset:3px;margin:3px}
  .bm-plate-top{margin-bottom:8px;padding-bottom:6px}
  .bm-plate-code{font-size:26px;padding:9px 6px}
  .bm-plate-gain{margin:9px 0;font-size:14.5px}
  .bm-plate-note{font-size:12px;margin-top:8px}
  .bm-qi td:last-child{width:auto}
  .bm-pick{padding:16px 18px 14px}
  .bm-chs,.bm-chs-s{grid-template-columns:minmax(0,1fr)}
  .bm-ch-code{font-size:36px}
  .bm-dir{grid-template-columns:minmax(0,1fr);padding:16px 18px}
  .bm-tcards,.bm-qlist,.bm-mulu{grid-template-columns:minmax(0,1fr)}
  .bm-revs a{grid-template-columns:minmax(0,1fr) auto;padding:10px 12px}
  .bm-revs .bm-dgm-s{display:none}
  .bm-lh{gap:14px}
  .bm-lh-code{width:52px;height:52px;font-size:32px}
  .bm-row{grid-template-columns:52px minmax(0,1fr);padding:12px 14px;gap:10px}
  .bm-row-d{grid-column:2;text-align:left;font-size:13px}
  .bm-art-h{flex-direction:column;gap:0}
  .bm-dgm-h{display:none}
  .bm-art-body{padding:22px 16px 26px;border-left:0;border-right:0;border-radius:0;margin:0 calc(var(--bm-gut)*-1)}
  .bm-text{font-size:16px}
  .bm-text h2{font-size:19px}
  .bm-steps li{padding-left:46px}
  .bm-steps li::before{width:32px;height:32px;font-size:16px}
  .bm-steps li::after{left:15px;top:32px}
  .bm-br{grid-template-columns:minmax(0,1fr)}
  .bm-br-see::after{display:none}
  .bm-br-do{padding-left:16px!important;border-top:1px solid var(--bm-hair)}
  .bm-calc{grid-template-columns:minmax(0,1fr)}
  .bm-out-grid{grid-template-columns:minmax(0,1fr)}
  .bm-qz-in{padding:16px 16px 6px}
  .bm-qz-opts,.bm-qz .bm-hint{padding-left:0}
  .bm-calc-out.bm-qz-out{padding:20px 18px 18px}
  .bm-colophon-in{grid-template-columns:minmax(0,1fr)}
  .bm-colophon-links,.bm-colophon-c{grid-column:1}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}
@media print{
  .bm-masthead,.bm-colophon,.bm-art-side,.bm-plate{display:none}
  body{background:none}
}