/* Compact method reader. Color identifies section roles; source numbering stays intact. */
html[data-theme] body[data-page="method"] {
  --theme-paper:#f7f8fa;--theme-paper-alt:#f1f3f6;--theme-surface:#fff;--theme-surface-soft:#f7f8fa;
  --theme-ink:#20242c;--theme-text:#343b47;--theme-muted:#647084;--theme-line:#e3e7ed;--theme-line-strong:#ccd2dd;
  --theme-sage:#3865c7;--theme-sage-deep:#284d9d;--theme-sage-soft:#edf3ff;--theme-lime:#dde8ff;
  --rs-paper:var(--theme-paper);--rs-surface:var(--theme-surface);--rs-ink:var(--theme-ink);--rs-muted:var(--theme-muted);--rs-line:var(--theme-line);--rs-green:#3865c7;
  --deep-sage:#3865c7;--deep-lime:#dde8ff;--deep-rust:#3865c7;--ref-green:#3865c7;
  --reader-font:"Segoe UI","PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --reader-header:var(--reader-header-height,60px);--reader-accent:#3865c7;--reader-accent-soft:#edf3ff;--reader-note:#766084;--reader-note-soft:#f3eff6;
  color:var(--theme-ink);background:var(--theme-paper);font-family:var(--reader-font);
}
html[data-theme="dark"] body[data-page="method"] {
  --theme-paper:#11141a;--theme-paper-alt:#181d26;--theme-surface:#1b202a;--theme-surface-soft:#202632;
  --theme-ink:#e9edf5;--theme-text:#d1d8e3;--theme-muted:#a3afc2;--theme-line:#303847;--theme-line-strong:#465168;
  --reader-accent:#93b3ff;--reader-accent-soft:#263553;--rs-green:#93b3ff;--reader-note:#c7aed7;--reader-note-soft:#332b3b;
}
body[data-page="method"] .site-header { background:var(--theme-surface);border-color:var(--theme-line);box-shadow:none; }
html[data-theme] body[data-page="method"]:has(.site-header.is-header-hidden) { --reader-header:0px; }
html[data-theme] body[data-page="method"] .site-header.site-header { box-shadow:none!important;backdrop-filter:none!important; }
html[data-theme] body[data-page="method"] .site-header.site-header.site-header { background:var(--theme-surface)!important;color:var(--theme-ink)!important;border-color:var(--theme-line)!important; }
html[data-theme] body[data-page="method"] .site-header.site-header.site-header .header-quick-actions { background:var(--theme-surface)!important;border-color:var(--theme-line)!important; }
html[data-theme] body[data-page="method"] .site-header.site-header.site-header .theme-toggle { background:var(--theme-surface-soft)!important; }
body[data-page="method"] .site-footer { background:var(--theme-surface);border-color:var(--theme-line); }
html body[data-page="method"] .site-header.site-header.site-header .site-scroll-progress { display:none!important; }
body[data-page="method"] :is(button,a,input,summary):focus-visible { outline:2px solid var(--reader-accent);outline-offset:4px; }
body[data-page="method"] ::selection { background:var(--reader-accent-soft);color:var(--theme-ink); }
#main[data-soil-methods="detail"] {
  --mr-ink:var(--theme-ink);--mr-muted:var(--theme-muted);--mr-rule:var(--theme-line);--mr-page:var(--theme-surface);--mr-wash:var(--theme-surface-soft);--mr-green:var(--reader-accent);
  --mr-source-font:var(--reader-font);--sm-green:var(--reader-accent);--sm-border:var(--theme-line);
  background:var(--theme-paper);color:var(--mr-ink);font-family:var(--reader-font);overflow-anchor:none;
}
#main .sm-shell { width:min(calc(100% - 64px),1280px);max-width:1280px;margin-inline:auto; }
#main [hidden] { display:none!important; }
#main .sm-nav { min-height:40px;padding-inline:max(40px,calc((100% - 1280px)/2));background:var(--mr-page);border-bottom:1px solid var(--mr-rule); }
#main .sm-nav a { min-height:40px;font-size:12px;color:var(--mr-muted); }
#main .sm-nav a[aria-current] { color:var(--mr-ink);box-shadow:inset 0 -2px var(--reader-accent); }
#main .sm-manual-head { background:var(--mr-page);border:0;padding:0 32px;scroll-margin-top:calc(var(--reader-header) + 76px); }
#main .sm-manual-hero { display:block;padding-block:18px 12px; }
#main .sm-manual-copy { max-width:1050px; }
#main .sm-manual-topline { display:flex;align-items:center;justify-content:space-between;gap:12px; }
#main .sm-manual-topline .sm-detail-actions { margin:0;flex:none; }
#main .sm-manual-eyebrow { display:flex;align-items:center;gap:12px;font-size:12px;color:var(--mr-muted);letter-spacing:.02em; }
#main .sm-manual-eyebrow>span { color:var(--reader-accent);font-weight:600; }
#main .sm-manual-eyebrow>i { width:3px;height:3px;border-radius:50%;background:var(--mr-rule); }
#main .sm-manual-copy h1 { max-width:100%;margin:8px 0 10px;font:700 clamp(23px,2.1vw,29px)/1.4 var(--reader-font);color:var(--mr-ink);letter-spacing:-.045em;text-wrap:pretty;overflow-wrap:break-word; }
#main .sm-title-techniques { display:inline;margin-left:.25em;font-size:clamp(15px,1.2vw,17px);font-weight:400;line-height:1.85;letter-spacing:0;color:var(--mr-muted); }
#main .sm-title-variants { position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap; }
#main .sm-manual-deck { font:13px/1.65 var(--reader-font);max-width:72em;color:var(--mr-muted);margin:0 0 10px; }
#main .sm-manual-source { display:flex;align-items:flex-start;gap:10px;font-size:13px;line-height:1.7;color:var(--mr-muted); }
#main .sm-manual-source>img { width:17px;height:17px;opacity:.65;margin-top:0;flex:none; }
#main .sm-manual-source>div { display:flex;gap:8px 18px;flex-wrap:wrap; }
#main .sm-manual-source strong { font-weight:500;color:var(--mr-ink); }
#main .sm-manual-source span { color:var(--mr-muted);font-size:12px; }
#main .sm-document-meta { display:flex;align-items:center;justify-content:flex-end;gap:12px; }
#main .sm-document-meta .sm-detail-actions { margin:0;flex:none; }
#main .sm-detail-actions { display:flex;flex-wrap:wrap;gap:8px;margin-top:16px; }
#main .sm-detail-actions :is(a,button) { display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;padding:9px 15px;border:1px solid var(--mr-rule);border-radius:8px;background:var(--mr-page);color:var(--mr-ink);font:500 13px/1.5 var(--reader-font);cursor:pointer;transition:background .16s,border-color .16s; }
/* The shared deep-page stylesheet forces square controls; reader controls use a softer edge. */
#main .sm-detail-actions :is(a,button) { border-radius:8px!important; }
#main :is(.sm-toc-list a,.sm-reader-controls button,.sm-figure-switch button,.sm-image-viewer button,.sm-toc-dialog>header button) { border-radius:6px!important; }
#main .sm-detail-actions .sm-button { background:var(--mr-ink);border-color:var(--mr-ink);color:var(--mr-page); }
#main .sm-detail-actions .sm-button img { filter:brightness(0) invert(1); }
#main .sm-detail-actions button:hover { background:var(--mr-wash);border-color:var(--theme-line-strong); }
#main .sm-detail-actions button[aria-pressed="true"] { color:var(--reader-accent);background:var(--reader-accent-soft);border-color:transparent; }
#main .sm-detail-actions img { width:15px;height:15px; }
#main .sm-detail-actions button { min-height:34px;padding:5px 10px;font-size:12px;background:none; }
#main .sm-indicator-methods { margin-top:16px;padding-top:12px;border-top:1px solid var(--mr-rule); }
#main .sm-indicator-methods h2 { margin:0 0 8px;font-size:12px;font-weight:600; }
#main .sm-indicator-methods h2 small { margin-left:8px;font-size:11px;font-weight:400;color:var(--mr-muted); }
#main .sm-indicator-methods ol { grid-template-columns:repeat(var(--method-columns,2),minmax(0,1fr));gap:0 12px;margin:0;padding:0;list-style:none; }
#main .sm-indicator-methods a { gap:12px;align-items:flex-start;padding:13px 0;min-height:48px;border:0;border-bottom:1px solid var(--mr-rule);background:none;font-size:13px;line-height:1.75;color:var(--mr-ink);border-radius:0; }
#main .sm-indicator-methods a>span { flex:none;font:500 11px/24px var(--reader-font);color:var(--mr-muted); }
#main .sm-indicator-methods a>b { font-weight:500; }
#main .sm-indicator-methods a>img { margin-top:4px;opacity:.55; }
#main .sm-indicator-methods a:hover { color:var(--reader-accent); }
#main .sm-indicator-methods button { display:flex;align-items:baseline;gap:10px;width:100%;height:100%;min-height:44px;padding:10px 12px;border:1px solid var(--mr-rule);border-radius:7px!important;background:var(--mr-page);color:var(--mr-muted);font:13px/1.5 var(--reader-font);text-align:left;cursor:pointer; }
#main .sm-indicator-methods button>span { flex:none;font-size:11px;font-variant-numeric:tabular-nums; }
#main .sm-indicator-methods button>b { font-weight:500;overflow-wrap:anywhere; }
#main .sm-indicator-methods button:hover { border-color:var(--reader-accent);color:var(--reader-accent); }
#main .sm-indicator-methods button[aria-selected="true"] { border-color:var(--reader-accent);background:var(--reader-accent-soft);color:var(--reader-accent); }
#main .sm-indicator-methods ol { gap:8px; }
#main #indicatorMethods { scroll-margin-top:calc(var(--reader-header) + 76px); }
#main .sm-reading-shortcuts { display:flex;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;gap:4px 16px;border-top:1px solid var(--mr-rule);border-bottom:1px solid var(--mr-rule);padding-block:5px; }
#main .sm-reading-shortcuts a { display:inline-flex;align-items:center;gap:8px;flex:none;min-height:34px;padding:6px 0;border:0;background:none;color:var(--mr-muted);font-size:12px;transition:color .15s; }
#main .sm-reading-shortcuts a:hover { color:var(--reader-accent); }
#main .sm-reading-shortcuts img { width:15px;height:15px;opacity:.65; }
#main .sm-reader { padding-block:16px 40px; }
#main .sm-reading-layout { display:grid;grid-template-columns:212px minmax(0,1fr);gap:24px;align-items:start;margin:0; }
#main .sm-toc { position:sticky;top:calc(var(--reader-header) + 20px);min-width:0;margin:0;padding:0 0 12px;border:0;background:none; }
#main .sm-toc-heading { display:flex;justify-content:space-between;align-items:center;padding:6px 0 10px;border:0; }
#main .sm-toc-heading strong { color:var(--mr-ink);font-size:13px;font-weight:600; }
#main .sm-toc-heading>span { font-size:11px;color:var(--mr-muted); }
#main .sm-toc-search { display:flex;align-items:center;gap:8px;border:1px solid var(--mr-rule);border-radius:7px;background:var(--mr-page);padding:7px 10px;margin-bottom:10px; }
#main .sm-toc-search>img { width:14px;height:14px;opacity:.55; }
#main .sm-toc-search input { width:100%;min-width:0;min-height:26px;padding:0;border:0;background:none;outline:none;color:var(--mr-ink);font:12px/1.6 var(--reader-font); }
#main .sm-toc-search:focus-within { outline:2px solid var(--reader-accent);outline-offset:2px; }
#main .sm-toc-list { --section-accent:var(--mr-muted);--section-wash:var(--mr-wash);display:block;max-height:calc(100dvh - var(--reader-header) - 220px);overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:var(--theme-line-strong) transparent; }
#main .sm-toc-list a { position:relative;display:grid;grid-template-columns:26px minmax(0,1fr);gap:9px;align-items:start;min-height:36px;margin:3px 0;padding:7px 9px;border:0;border-radius:6px;background:none;color:var(--mr-ink);font-size:12px;line-height:1.65;box-shadow:none; }
#main .sm-toc-list a small { display:grid;place-items:center;min-height:22px;padding:1px 3px;border-radius:5px;background:var(--section-wash);font:700 11px/1.8 var(--reader-font);color:var(--section-accent);font-variant-numeric:tabular-nums;white-space:nowrap; }
#main .sm-toc-list a>span { display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden; }
#main .sm-toc-support { margin-top:10px;border-top:1px solid var(--mr-rule); }
#main .sm-toc-support>summary { padding-block:10px 5px; }
#main .sm-toc-list a[data-depth="0"]>span { font-weight:600; }
#main .sm-toc-list a[data-depth="1"] { margin-left:21px;grid-template-columns:minmax(20px,max-content) minmax(0,1fr);gap:8px;font-size:11.5px;color:var(--mr-muted); }
#main .sm-toc-list a[data-depth="2"] { margin-left:37px;grid-template-columns:minmax(24px,max-content) minmax(0,1fr);gap:8px;font-size:11.5px;color:var(--mr-muted); }
#main .sm-toc-list a:is([data-depth="1"],[data-depth="2"])::before { content:"";position:absolute;left:0;top:-3px;bottom:-3px;width:1px;background:var(--mr-rule); }
#main .sm-toc-entry small:empty { background:none; }
#main .sm-toc-entry small:empty::before { content:"";width:5px;height:5px;border:1px solid var(--section-accent);border-radius:50%; }
#main .sm-toc-list .sm-toc-context { margin-bottom:9px;color:var(--mr-muted); }
#main .sm-toc-list .sm-toc-context>span { font-weight:400; }
#main .sm-toc-list .sm-toc-context small { background:none; }
#main .sm-toc-list a[data-method-heading="true"] { margin-top:2px!important;border-top:0!important;font-weight:500; }
#main .sm-toc-list a:hover { background:var(--mr-wash);color:var(--mr-ink); }
#main .sm-toc-list a[aria-current="true"] { background:var(--section-wash);color:var(--section-accent);box-shadow:inset 3px 0 var(--section-accent); }
#main .sm-toc-list a[aria-current="true"]>span { font-weight:650; }
#main .sm-toc-list a[aria-current="true"]::before { display:none; }
#main .sm-toc-list a[aria-current="true"] small { color:inherit;background:var(--mr-page); }
#main .sm-toc-list a:focus-visible { outline:2px solid var(--section-accent);outline-offset:-2px; }
#main .sm-toc-list img { width:13px;height:13px; }
#main .sm-toc-group { margin:0 0 10px; }
#main .sm-toc-group>summary { display:flex;gap:7px;align-items:start;padding:9px 8px;cursor:pointer;list-style:none;line-height:1.7; }
#main .sm-toc-group>summary::-webkit-details-marker { display:none; }
#main .sm-toc-group>summary>span { flex:none;font-size:10px;color:var(--mr-muted);padding-top:1px; }
#main .sm-toc-group>summary>b { font-size:12px;font-weight:600;color:var(--mr-ink); }
#main .sm-toc-group>summary>img { flex:none;margin-left:auto;margin-top:4px;width:13px;height:13px;transition:transform .16s; }
#main .sm-toc-group:not([open])>summary>img { transform:rotate(-90deg); }
#main .sm-toc-support>summary { align-items:center;gap:8px;padding:10px 8px 5px; }
#main .sm-toc-support>summary>span { padding:0;font-size:11px; }
#main .sm-toc-support-item>.sm-toc-support-link { grid-template-columns:16px minmax(0,1fr);gap:7px;padding:7px 8px; }
#main .sm-toc-support-link small { display:flex;align-items:center;height:19px; }
#main .sm-toc-support-link>span { -webkit-line-clamp:3; }
#main .sm-toc-support-children { margin:2px 0 7px 15px;padding-left:8px;border-left:1px solid var(--mr-rule); }
#main .sm-toc-support-children a { grid-template-columns:20px minmax(0,1fr);padding:5px 7px;margin-left:0; }
#main .sm-toc-support-children a::before { display:none; }
#main .sm-toc-support-link small,#main .sm-toc-citation small { padding:0;background:none; }
#main .sm-toc-support .sm-toc-support-link { color:var(--mr-muted);font-size:11.5px; }
#main .sm-toc-list .sm-toc-citation { margin-top:10px;padding-top:12px;border-top:1px solid var(--mr-rule); }
#main .sm-toc-empty { font-size:12px;color:var(--mr-muted);padding:4px 8px; }
#main .sm-reading-meter { padding:18px 2px 0;margin-top:16px;border-top:1px solid var(--mr-rule); }
#main .sm-reading-meter>span { display:flex;justify-content:space-between;font-size:11px;color:var(--mr-muted); }
#main .sm-reading-meter i { display:block;height:2px;background:var(--mr-rule);margin-top:10px; }
#main .sm-reading-meter i b { display:block;height:100%;width:0;background:var(--reader-accent); }
#main .sm-toc-back { display:flex;align-items:center;gap:8px;margin-top:18px;padding:0;color:var(--mr-muted);font-size:12px; }
#main .sm-toc-back img { width:14px;height:14px; }
#main .sm-book-context { display:block;padding:0 3px 23px;margin-bottom:17px;border-bottom:1px solid var(--mr-rule);color:var(--mr-ink); }
#main .sm-book-context>span { display:flex;align-items:center;gap:9px;font-size:11px;color:var(--mr-muted);margin-bottom:13px; }
#main .sm-book-context img { width:15px;height:15px;opacity:.65; }
#main .sm-book-context>strong { display:block;font:600 15px/1.8 var(--reader-font); }
#main .sm-book-context>small { display:flex;justify-content:space-between;gap:10px;margin-top:9px;font-size:11px;color:var(--mr-muted); }
#main .sm-manual-paper { min-width:0;background:var(--mr-page);border:1px solid var(--mr-rule);border-radius:12px;box-shadow:0 5px 22px #17233804; }
#main .sm-paper-toolbar { position:sticky;top:var(--reader-header);z-index:6;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:5px 20px;min-height:44px;border:0;border-bottom:1px solid var(--mr-rule);border-radius:12px 12px 0 0;background:var(--mr-page); }
#main :is(.sm-paper-toolbar,.sm-toc) { transition:top 360ms var(--ease-out); }
#main .sm-paper-location { display:flex;align-items:center;gap:13px;min-width:0; }
#main .sm-paper-location strong { flex:none;font-size:12px;font-weight:600; }
#main .sm-paper-location>span { white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--mr-muted);font-size:12px;max-width:220px; }
#main .sm-reader-controls { display:flex;align-items:center;gap:4px;flex:none; }
#main .sm-reader-controls :is(button,a) { display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:34px;padding:6px 9px;border:0;border-radius:6px;background:none;color:var(--mr-muted);font:12px/1.5 var(--reader-font);cursor:pointer;transition:background .15s,color .15s;text-decoration:none; }
#main .sm-reader-controls :is(button,a):hover { background:var(--mr-wash);color:var(--mr-ink); }
#main .sm-reader-controls button[aria-pressed="true"] { background:var(--reader-accent-soft);color:var(--reader-accent); }
#main .sm-reader-controls button:disabled { opacity:.3;cursor:default;background:none; }
#main .sm-control-divider { width:1px;height:16px;background:var(--mr-rule);margin-inline:5px; }
#main .sm-reader-controls img { width:15px;height:15px; }
#main .sm-reader-controls b { font-size:15px;font-weight:500; }
#main .sm-reader-controls [data-sm-toc-open] { display:none; }
#main .sm-protocol { padding:0 32px;min-width:0;border:0;border-radius:0;background:none;font-family:var(--reader-font); }
#main .sm-protocol-section { padding:15px 0;margin:0;border:0;border-radius:0;background:none;scroll-margin-top:calc(var(--reader-header) + 78px); }
#main .sm-protocol-section[data-depth="0"]:not(.sm-method-start,.sm-method-bridge)~.sm-protocol-section[data-depth="0"]:not(.sm-method-start,.sm-method-bridge) { border-top:1px solid var(--mr-rule); }
#main .sm-protocol-section>header { display:flex;align-items:flex-start;gap:12px;padding:0;margin:0 0 8px;border:0; }
#main .sm-section-icon { display:none; }
#main .sm-chapter-heading { display:flex;align-items:baseline;gap:10px;width:100%; }
#main .sm-chapter-heading :is(h2,h3,h4) { min-width:0; }
#main .sm-source-number { flex:none;color:var(--mr-muted);font:12px/1.6 var(--reader-font);font-variant-numeric:tabular-nums; }
#main .sm-protocol-section>header p { margin:0 0 7px;font:11px/1.5 var(--reader-font);color:var(--mr-muted);letter-spacing:.04em; }
#main .sm-protocol-section>header p>span { color:var(--mr-muted);font:11px/1.5 var(--reader-font);letter-spacing:0; }
#main .sm-protocol-section :is(h2,h3,h4) { margin:0;color:var(--mr-ink);font-family:var(--reader-font);font-weight:650;line-height:1.65;letter-spacing:-.015em;overflow-wrap:break-word; }
#main .sm-protocol-section h2 { font-size:19px; }
#main .sm-protocol-section h3 { font-size:17px; }
#main .sm-protocol-section h4 { font-size:15px; }
#main .sm-section-body { color:var(--theme-text);min-width:0;max-width:100%; }
#main .sm-reading-row { display:grid;grid-template-columns:minmax(28px,max-content) minmax(0,1fr);gap:9px;margin:6px 0;padding:0;border:0;background:none;color:var(--theme-text);font:400 14px/1.65 var(--reader-font);letter-spacing:0; }
#main .sm-reading-row:has(> .sm-step-number:empty) { grid-template-columns:minmax(0,1fr); }
#main .sm-reading-row.sm-prose>.sm-item-copy>.sm-item-lead { text-indent:2em; }

#main .sm-step-number:empty { display:none; }
#main .sm-step-number { min-width:26px;width:auto;max-width:none;height:auto;align-self:start;white-space:nowrap;margin-top:0;padding:0 4px;border:1px solid var(--mr-rule);border-radius:7px;background:var(--mr-page);color:var(--mr-muted);font:700 11px/23px var(--reader-font);font-variant-numeric:tabular-nums;text-align:center; }
#main :is(.sm-role-procedure,.sm-role-measurement) .sm-reading-row { margin-block:9px; }
#main :is(.sm-role-reagents,.sm-role-apparatus,.sm-role-materials) .sm-reading-row { padding:7px 0;margin:0;border:0;border-bottom:1px solid var(--mr-rule);background:none;font-size:14px; }
#main :is(.sm-role-reagents,.sm-role-apparatus,.sm-role-materials) .sm-reading-row:last-child { border-bottom:0; }
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/* Fixed heading colors, shared by document headings and their navigation entries. */
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  --tone-reagents:#137469;--tone-reagents-soft:#edf7f3;
  --tone-materials:#70712e;--tone-materials-soft:#f5f5e9;
  --tone-preparation:#8a6335;--tone-preparation-soft:#faf3e9;
  --tone-measurement:#186f85;--tone-measurement-soft:#edf6f9;
  --tone-calculation:#7951a0;--tone-calculation-soft:#f5effa;
  --tone-result:#914e70;--tone-result-soft:#faeff5;
  --tone-quality:#5d7631;--tone-quality-soft:#f1f6e9;
  --tone-notes:#8b641f;--tone-notes-soft:#faf5e9;
  --tone-caution:#9b5527;--tone-caution-soft:#fff3e9;
  --tone-safety:#a23d4a;--tone-safety-soft:#fceff1;
  --tone-interference:#915345;--tone-interference-soft:#faf1ee;
  --tone-sampling:#5d6879;--tone-sampling-soft:#f0f2f5;
  --tone-extraction:#9b4e32;--tone-extraction-soft:#fcf0eb;
  --tone-calibration:#465bab;--tone-calibration-soft:#eef1fb;
  --tone-aliquot:#80603d;--tone-aliquot-soft:#f8f2eb;
  --tone-concentration:#326e49;--tone-concentration-soft:#edf6ef;
  --tone-interpretation:#914e70;--tone-interpretation-soft:#faeff5;
}
html[data-theme="dark"] #main {
  --tone-overview:#b8c3d5;--tone-overview-soft:#282f3a;
  --tone-principle:#b9bcf3;--tone-principle-soft:#2c2d47;
  --tone-apparatus:#a4c9e4;--tone-apparatus-soft:#243642;
  --tone-reagents:#88d6bd;--tone-reagents-soft:#203b31;
  --tone-materials:#d0cf92;--tone-materials-soft:#363923;
  --tone-preparation:#e0bd8e;--tone-preparation-soft:#3b3024;
  --tone-measurement:#90d2e4;--tone-measurement-soft:#223941;
  --tone-calculation:#d0b3ec;--tone-calculation-soft:#372b45;
  --tone-result:#e9b0cd;--tone-result-soft:#412b38;
  --tone-quality:#bcd792;--tone-quality-soft:#2d3a24;
  --tone-notes:#e4c585;--tone-notes-soft:#3b3423;
  --tone-caution:#efbd93;--tone-caution-soft:#422f22;
  --tone-safety:#f2a9b1;--tone-safety-soft:#452a30;
  --tone-interference:#e7b6a8;--tone-interference-soft:#3d2d28;
  --tone-sampling:#b8c3d5;--tone-sampling-soft:#282f3a;
  --tone-extraction:#eab29a;--tone-extraction-soft:#412c25;
  --tone-calibration:#afbef4;--tone-calibration-soft:#293249;
  --tone-aliquot:#dbb795;--tone-aliquot-soft:#3b2f26;
  --tone-concentration:#9acfac;--tone-concentration-soft:#23392d;
  --tone-interpretation:#e9b0cd;--tone-interpretation-soft:#412b38;
}
#main [data-sm-section-tone="overview"],#main [data-sm-section-tone="scope"] { --section-accent:var(--tone-overview);--section-wash:var(--tone-overview-soft); }
#main [data-sm-section-tone="principle"] { --section-accent:var(--tone-principle);--section-wash:var(--tone-principle-soft); }
#main [data-sm-section-tone="apparatus"] { --section-accent:var(--tone-apparatus);--section-wash:var(--tone-apparatus-soft); }
#main [data-sm-section-tone="reagents"] { --section-accent:var(--tone-reagents);--section-wash:var(--tone-reagents-soft); }
#main [data-sm-section-tone="materials"] { --section-accent:var(--tone-materials);--section-wash:var(--tone-materials-soft); }
#main [data-sm-section-tone="preparation"] { --section-accent:var(--tone-preparation);--section-wash:var(--tone-preparation-soft); }
#main [data-sm-section-tone="procedure"] { --section-accent:var(--reader-accent);--section-wash:var(--reader-accent-soft); }
#main [data-sm-section-tone="measurement"] { --section-accent:var(--tone-measurement);--section-wash:var(--tone-measurement-soft); }
#main [data-sm-section-tone="calculation"] { --section-accent:var(--tone-calculation);--section-wash:var(--tone-calculation-soft); }
#main [data-sm-section-tone="result"] { --section-accent:var(--tone-result);--section-wash:var(--tone-result-soft); }
#main [data-sm-section-tone="quality_control"] { --section-accent:var(--tone-quality);--section-wash:var(--tone-quality-soft); }
#main [data-sm-section-tone="notes"] { --section-accent:var(--tone-notes);--section-wash:var(--tone-notes-soft); }
#main [data-sm-section-tone="caution"] { --section-accent:var(--tone-caution);--section-wash:var(--tone-caution-soft); }
#main [data-sm-section-tone="safety"] { --section-accent:var(--tone-safety);--section-wash:var(--tone-safety-soft); }
#main [data-sm-section-tone="interference"] { --section-accent:var(--tone-interference);--section-wash:var(--tone-interference-soft); }
#main [data-sm-section-tone="sampling"] { --section-accent:var(--tone-sampling);--section-wash:var(--tone-sampling-soft); }
#main [data-sm-section-tone="extraction"] { --section-accent:var(--tone-extraction);--section-wash:var(--tone-extraction-soft); }
#main [data-sm-section-tone="calibration"] { --section-accent:var(--tone-calibration);--section-wash:var(--tone-calibration-soft); }
#main [data-sm-section-tone="aliquot"] { --section-accent:var(--tone-aliquot);--section-wash:var(--tone-aliquot-soft); }
#main [data-sm-section-tone="concentration"] { --section-accent:var(--tone-concentration);--section-wash:var(--tone-concentration-soft); }
#main [data-sm-section-tone="interpretation"] { --section-accent:var(--tone-interpretation);--section-wash:var(--tone-interpretation-soft); }
#main .sm-protocol-section>header { padding:8px 11px;border-left:3px solid var(--section-accent);background:var(--section-wash);border-radius:0 5px 5px 0; }
#main .sm-protocol-section>header :is(h2,h3,h4) { color:var(--section-accent);font-weight:700;line-height:1.5; }
#main .sm-protocol-section[data-depth="1"]>header { padding:7px 10px;background:var(--section-wash);border-left-width:2px; }
#main .sm-protocol-section[data-depth="2"]>header { padding:6px 10px;background:var(--mr-wash);border-left:2px solid var(--section-accent); }
#main .sm-source-number { order:-1;color:var(--section-accent);font-weight:700;font-size:12px;min-width:24px; }
#main .sm-protocol-section[data-depth="0"]>header .sm-source-number { padding:1px 5px;border-radius:4px;background:var(--mr-page);text-align:center; }
#main .sm-source-number:empty { display:none; }
#main .sm-item-name { color:var(--section-accent); }
#main :is(.sm-role-procedure,.sm-role-preparation,.sm-role-measurement) .sm-step-number:not(:empty) { background:var(--reader-accent-soft);color:var(--reader-accent);border-color:transparent; }
#main .sm-reading-row.sm-reading-note { padding:8px 11px;margin:8px 0;border:0;border-left:2px solid var(--theme-line-strong);background:var(--mr-wash);font-size:13px;line-height:1.65; }
#main .sm-reading-row.sm-source-warning { color:var(--reader-warning); }
#main .sm-notice-group { margin:10px 0;padding:10px 13px;border-left:3px solid var(--reader-warning);border-radius:0 5px 5px 0;background:var(--reader-warning-soft);font:13px/1.65 var(--reader-font); }
#main .sm-notice-group>strong { color:var(--reader-warning);font-size:13px; }
#main .sm-notice-group>ul { margin:5px 0 0;padding-left:17px;list-style:disc; }
#main .sm-notice-group .sm-reading-row { padding:2px 0;margin:0;border:0;background:none;font-size:13px; }
#main .sm-notice-context { margin:7px 0 0;padding-top:7px;border-top:1px solid var(--mr-rule);color:var(--mr-muted);font-size:12px; }
#main .sm-method-shortcuts { display:flex;gap:16px;flex:none; }
#main .sm-indicator-methods button>b { display:flex;flex-direction:column;gap:4px;font-weight:650; }
#main .sm-indicator-methods button>b small { font-size:11px;font-weight:400;line-height:1.5; }
#main .sm-indicator-methods button[aria-selected="true"] { box-shadow:inset 0 -2px var(--reader-accent); }
#main .sm-shared-context { margin:12px 0 2px;padding:0;border:1px solid var(--mr-rule);border-radius:6px;background:var(--mr-page); }
#main .sm-shared-context>summary { display:flex;align-items:center;gap:8px;min-height:42px;padding:8px 12px;cursor:pointer;list-style:none;color:var(--mr-muted);font:12px/1.5 var(--reader-font); }
#main .sm-shared-context>summary::-webkit-details-marker { display:none; }
#main .sm-shared-context>summary strong { color:var(--mr-ink);font-weight:600; }
#main .sm-shared-context>summary span { margin-left:auto;font-size:11px; }
#main .sm-shared-context>summary img { width:14px;height:14px; }
#main .sm-shared-context[open]>summary { border-bottom:1px solid var(--mr-rule);background:var(--mr-wash); }
#main .sm-shared-context[open]>summary>img:last-child { transform:rotate(180deg); }
#main .sm-shared-context[open]>summary span { display:none; }
#main .sm-shared-context[open]>summary>img:last-child { margin-left:auto; }
#main .sm-shared-body { padding:0 14px; }
#main .sm-reading-background { margin:0 0 16px; }
#main .sm-reading-background .sm-protocol-section { padding:3px 0 8px; }
#main .sm-context-prose>.sm-section-body>.sm-reading-row:first-child { margin-top:6px; }
#main .sm-reading-background .sm-protocol-section>header { background:none;border:0;padding:0;margin-bottom:8px; }
#main .sm-reading-background .sm-protocol-section>header h2 { font-size:15px;color:var(--mr-muted); }
#main .sm-reading-background .sm-source-number { display:none; }
#main .sm-support-library { margin:22px 0 18px;border:1px solid var(--mr-rule);border-radius:8px!important;overflow:hidden;background:var(--mr-page); }
#main .sm-support-library>header { padding:12px 14px 10px;background:var(--mr-wash);border-bottom:1px solid var(--mr-rule); }
#main .sm-support-library>header>h2 { display:flex;align-items:center;gap:8px;margin:0;color:var(--mr-ink);font:700 14px/1.6 var(--reader-font); }
#main .sm-support-library>header>h2 img { width:15px;height:15px; }
#main .sm-support-library>header>h2 small { margin-left:auto;font:400 11px/1.6 var(--reader-font);color:var(--mr-muted); }
#main .sm-support-library>header>p { margin:3px 0 0 23px;color:var(--mr-muted);font:12px/1.6 var(--reader-font); }
#main .sm-support-group { margin:0;border:0;border-bottom:1px solid var(--mr-rule);background:var(--mr-page); }
#main .sm-support-group:last-child { border-bottom:0; }
#main .sm-support-group>summary { display:grid;grid-template-columns:15px minmax(0,1fr) 14px;align-items:center;gap:8px;list-style:none;cursor:pointer;padding:11px 14px;font:13px/1.6 var(--reader-font);color:var(--mr-ink); }
#main .sm-support-group>summary::-webkit-details-marker { display:none; }
#main .sm-support-group>summary>strong { min-width:0;font-weight:600;overflow-wrap:anywhere; }
#main .sm-support-group>summary>img { width:14px;height:14px; }
#main .sm-support-group>summary>img:first-child { opacity:.65; }
#main .sm-support-group>summary:hover { background:var(--mr-wash); }
#main .sm-support-group[open]>summary { background:var(--mr-wash);border-bottom:1px solid var(--mr-rule); }
#main .sm-support-group[open]>summary>img:last-child { transform:rotate(180deg); }
#main .sm-support-group>summary:focus-visible { outline:2px solid var(--reader-accent);outline-offset:2px; }
#main .sm-support-body { padding:0 12px; }
#main .sm-support-origin { margin:8px 0 10px;font:11px/1.6 var(--reader-font);color:var(--mr-muted);overflow-wrap:anywhere; }
#main .sm-support-body>.sm-protocol-section { padding:12px 0;border:0; }
#main .sm-support-body>.sm-protocol-section:first-of-type { padding-top:0; }
#main .sm-support-body>.sm-protocol-section:first-of-type>header { display:none; }
#main .sm-support-body>.sm-method-divider:first-of-type { padding:0;height:0; }
#main .sm-support-body>.sm-protocol-section:last-child { padding-bottom:12px; }
#main .sm-support-body>.sm-protocol-section>header :is(h2,h3,h4) { font-size:16px; }
#main .sm-shared-body>[data-indicator-method="true"] { display:none; }
#main .sm-method-panel>[data-indicator-method="true"]:not(.sm-method-start) { display:flex;align-items:baseline;gap:10px;padding:12px 0 8px;border-bottom:1px solid var(--mr-rule); }
#main .sm-method-panel>[data-indicator-method="true"]>span { flex:none;font-size:11px;color:var(--mr-muted);margin:0; }
#main .sm-method-panel>[data-indicator-method="true"] h2 { font-size:14px;line-height:1.5;font-weight:600;color:var(--mr-muted); }
#main .sm-formula { border-left:3px solid var(--section-accent,var(--reader-accent)); }
html[data-theme="dark"] #main { --reader-teal:#83cdb9;--reader-teal-soft:#203830;--reader-purple:#c0acef;--reader-purple-soft:#302b42;--reader-warning:#e4bb7f;--reader-warning-soft:#383023; }

@media(min-width:901px) { #main .sm-manual-source>img,#main .sm-manual-source strong { display:none; } }
@media(max-width:1100px) {
  #main .sm-shell { width:calc(100% - 48px); }
  #main .sm-nav { padding-inline:24px; }
  #main .sm-reading-layout { grid-template-columns:210px minmax(0,1fr);gap:22px; }
  #main .sm-paper-toolbar { padding-inline:18px; }
  #main .sm-paper-location>span { display:none; }
  #main .sm-reader-controls :is(button,a) { padding-inline:7px; }
}
@media(max-width:900px) {
  #main .sm-reading-layout { display:block; }
  #main .sm-toc { display:none; }
  #main .sm-reader-controls [data-sm-toc-open] { display:inline-flex; }
  #main .sm-manual-hero { padding-block:18px 12px; }
  #main .sm-document-meta { flex-wrap:wrap; }
}
@media(max-width:600px) {
  #main .sm-shell { width:calc(100% - 36px); }
  #main .sm-nav { padding-inline:18px;min-height:46px; }
  #main .sm-nav a { min-height:46px; }
  #main .sm-nav>div { gap:20px; }
  #main .sm-manual-head { padding-inline:18px; }
  #main .sm-manual-topline { gap:8px; }
  #main .sm-manual-topline .sm-manual-eyebrow { gap:6px;font-size:11px; }
  #main .sm-manual-topline .sm-detail-actions { gap:4px; }
  #main .sm-manual-topline .sm-detail-actions button { min-width:26px;min-height:30px;padding:5px; }
  #main .sm-manual-topline .sm-detail-actions button>span { display:none; }
  #main .sm-manual-copy h1 { font-size:22px;margin-block:8px 10px;line-height:1.45; }
  #main .sm-title-techniques { font-size:14px;line-height:1.9; }
  #main .sm-manual-source>div { display:block; }
  #main .sm-manual-source span { display:block;margin-top:4px; }
  #main .sm-indicator-methods ol { grid-template-columns:repeat(var(--method-columns,2),minmax(0,1fr)); }
  #main .sm-indicator-methods a { font-size:13px; }
  #main .sm-reading-shortcuts { gap:3px 20px;padding-block:8px; }
  #main .sm-reading-shortcuts a { font-size:12px; }
  #main .sm-reader { width:100%;padding-top:0;padding-bottom:30px; }
  #main .sm-manual-paper { border-inline:0;border-radius:0;box-shadow:none; }
  #main .sm-paper-toolbar { padding:7px 14px;border-radius:0;gap:4px;min-height:50px; }
  #main .sm-paper-location { display:none; }
  #main .sm-reader-controls { width:100%;justify-content:space-between; }
  #main .sm-reader-controls { gap:0; }
  #main .sm-reader-controls :is(button,a) { min-width:40px;min-height:40px;padding:6px 8px; }
  #main .sm-reader-controls [data-sm-font]>span { display:none; }
  #main .sm-reader-controls [data-sm-focus]>span { font-size:11px; }
  #main .sm-protocol { padding-inline:22px; }
  #main .sm-protocol-section { padding-block:15px;scroll-margin-top:calc(var(--reader-header) + 78px); }
  #main .sm-protocol-section h2 { font-size:19px; }
  #main .sm-protocol-section h3 { font-size:17px; }
  #main .sm-protocol-section h4 { font-size:17px; }
  #main .sm-reading-row { font-size:14px;line-height:1.65;gap:8px; }
  #main .sm-source-number { font-size:11px; }
  #main .sm-chapter-heading { gap:12px; }
  #main .sm-nested-items { padding-left:12px;margin-left:8px; }
  #main .sm-nested-items .sm-reading-row { font-size:14px; }
  #main .sm-item-name { font-size:inherit; }
  #main :is(.sm-role-reagents,.sm-role-apparatus,.sm-role-materials) .sm-reading-row { font-size:14px; }
  #main .sm-protocol-section[data-indicator-method="true"] h2 { font-size:19px; }
  #main .sm-formula { padding:8px 10px;margin-inline:0; }
  #main .sm-formula .sm-equation { font-size:15px; }
  #main .sm-equation .katex-display>.katex { display:block;width:100%;white-space:normal;text-align:left; }
  #main .sm-equation .katex-display>.katex>.katex-html { display:flex;flex-wrap:wrap;gap:8px 0;align-items:baseline;white-space:normal; }
  #main .sm-equation .katex-html>.katex-base { flex:none; }
  #main .sm-formula dl>div { display:flex;flex-wrap:wrap;gap:3px 14px; }
  #main .sm-formula dd { flex:1 1 180px; }
  #main .sm-data-table :is(th,td) { padding:10px 12px;font-size:13px; }
  #main .sm-source-figure>figcaption { padding:14px;gap:12px; }
  #main .sm-source-figure>figcaption>div { display:block; }
  #main .sm-source-figure>figcaption strong { display:block;margin-top:6px;font-size:13px; }
  #main .sm-source-figure>figcaption button { font-size:11px; }
  #main .sm-figure-image { padding:16px 8px; }
  #main .sm-image-viewer { width:calc(100vw - 16px);height:calc(100dvh - 24px); }
  #main .sm-image-viewer>header { padding:12px;gap:10px; }
  #main .sm-image-viewer>header>strong { font-size:12px; }
  #main .sm-image-viewer button { font-size:11px;padding:6px 8px; }
  #main .sm-image-canvas { padding:8px; }
  #main .sm-protocol-section.sm-last-section { padding-bottom:18px; }
  #main.sm-large-type .sm-reading-row { font-size:17px; }
  body.sm-focus-mode #main .sm-reader { padding-top:0; }
}
/* Reading cues and tools: source conditions and critical phrases. */
#main .sm-reading-key { color:var(--reader-accent);font-weight:600; }
#main .sm-reading-caution { color:#9a5b17;font-weight:700; }
#main .sm-support-label { display:block;font:500 11px/1.7 var(--reader-font);color:var(--reader-accent);margin-bottom:4px; }
#main .sm-recipe-toggle { display:inline-flex;align-items:center;justify-content:center;vertical-align:middle;margin:2px 0 2px 8px;padding:2px 7px;min-height:24px;border:1px solid var(--mr-rule);border-radius:5px!important;background:var(--mr-page);color:var(--reader-accent);font:500 12px/1.2 var(--reader-font);text-align:center;white-space:nowrap;cursor:pointer; }
#main .sm-recipe-toggle:hover,#main .sm-recipe-toggle[aria-expanded="true"] { background:var(--reader-accent-soft);border-color:var(--reader-accent); }
#main .sm-recipe-panel { margin-top:12px;padding:16px;border:1px solid var(--mr-rule);border-radius:8px;background:var(--mr-wash);font:14px/1.7 var(--reader-font);letter-spacing:0; }
#main .sm-recipe-panel p { margin:8px 0; }
#main .sm-recipe-inputs { display:flex;align-items:end;gap:10px; }
#main .sm-recipe-inputs label { display:block;min-width:0;font:12px/1.7 var(--reader-font);color:var(--mr-muted); }
#main .sm-recipe-inputs input,#main .sm-recipe-inputs select { display:block;width:100%;min-height:40px;margin-top:5px;padding:7px 10px;border:1px solid var(--theme-line-strong);border-radius:6px;background:var(--mr-page);color:var(--mr-ink);font:15px/1.5 var(--reader-font);font-variant-numeric:tabular-nums; }
#main .sm-recipe-inputs input { max-width:200px; }
#main .sm-recipe-inputs .sm-unit-label { flex:0 0 75px; }
#main .sm-recipe-inputs [aria-invalid="true"] { border-color:#b44a3c; }
#main .sm-recipe-output table { width:100%;border-collapse:collapse;table-layout:fixed;background:var(--mr-page); }
#main .sm-recipe-output caption { text-align:left;font-size:12px;font-weight:600;padding:9px 0 6px; }
#main .sm-recipe-output :is(th,td) { padding:8px 10px;border-bottom:1px solid var(--mr-rule);text-align:left;font-size:13px;overflow-wrap:anywhere; }
#main .sm-recipe-output th { color:var(--mr-muted);font-size:11px;font-weight:500; }
#main .sm-recipe-output :is(th,td):last-child { text-align:right;width:38%;font-variant-numeric:tabular-nums; }
#main .sm-recipe-output td:last-child { font-weight:650;color:var(--reader-accent); }
#main .sm-recipe-basis { font-size:11px;color:var(--mr-muted); }
#main .sm-recipe-final { font-weight:600;font-size:13px; }
#main .sm-recipe-condition { font-size:12px;color:var(--theme-text);border-left:2px solid #bf9150;padding-left:9px; }
#main .sm-recipe-error { color:#a84033;font-size:12px; }
#main .sm-recipe-error:empty { display:none; }
#main .sm-recipe-toggle { gap:5px;min-height:24px;height:24px;font-weight:600;text-indent:0; }
#main .sm-recipe-toggle>img { width:13px;height:13px; }
#main .sm-recipe-panel { margin:12px 0 4px;padding:0;overflow:hidden;background:var(--mr-page);border-color:var(--theme-line-strong);border-radius:9px;box-shadow:0 4px 14px #17233806;text-indent:0; }
#main .sm-calc-head { display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 14px;background:var(--reader-accent-soft);border-bottom:1px solid var(--mr-rule); }
#main .sm-calc-heading { display:flex;align-items:center;gap:7px;min-width:0; }
#main .sm-calc-heading>img { width:16px;height:16px; }
#main .sm-calc-heading>strong { color:var(--reader-accent);font-size:14px;font-weight:700; }
#main .sm-calc-heading>span { color:var(--mr-muted);font-size:10px;border-left:1px solid var(--theme-line-strong);padding-left:8px; }
#main .sm-calc-close { display:grid;place-items:center;flex:none;width:28px;min-height:28px;padding:0;border:0;border-radius:5px;background:transparent;color:var(--mr-muted);font:22px/1 var(--reader-font);cursor:pointer; }
#main .sm-calc-close:hover { background:var(--mr-page);color:var(--reader-accent); }
#main .sm-calc-workspace { padding:12px 14px 14px; }
#main .sm-recipe-panel .sm-calc-description { margin:0 0 12px;color:var(--mr-muted);font-size:12px;line-height:1.6;overflow-wrap:anywhere; }
#main .sm-calc-mode { display:flex;align-items:center;gap:10px;padding:10px 14px 0;color:var(--mr-muted);font-size:12px; }
#main .sm-calc-mode>select { flex:1;min-width:0;max-width:100%;min-height:34px;padding:5px 9px;border:1px solid var(--mr-rule);border-radius:5px;color:var(--mr-ink);background:var(--mr-page);font:12px/1.5 var(--reader-font); }
#main .sm-calc-grid { display:grid;grid-template-columns:minmax(170px,.8fr) minmax(0,1.6fr);gap:18px; }
#main .sm-calc-input-area,#main .sm-calc-result-area { min-width:0; }
#main .sm-calc-result-area { padding-left:18px;border-left:1px solid var(--mr-rule); }
#main .sm-recipe-panel :is(.sm-calc-input-area,.sm-calc-result-area)>h4 { margin:0 0 9px;font-size:12px;font-weight:700;color:var(--mr-ink); }
#main .sm-recipe-panel .sm-recipe-inputs { display:grid;grid-template-columns:minmax(0,1fr);gap:10px; }
#main .sm-recipe-panel .sm-recipe-inputs:has(.sm-unit-label) { grid-template-columns:minmax(0,1fr) 66px;gap:8px; }
#main .sm-recipe-panel .sm-recipe-inputs :is(input,select) { min-height:36px;margin-top:4px;padding:6px 9px;font-size:14px;line-height:1.5;max-width:none; }
#main .sm-recipe-panel :is(.sm-prep-sample-fields,.sm-recipe-inputs,.sm-solution-component)>label { display:flex;flex-direction:column;justify-content:flex-end; }
#main .sm-recipe-panel :is(.sm-prep-sample-fields,.sm-recipe-inputs,.sm-solution-component)>label>:is(input,select) { flex:none; }
#main .sm-recipe-panel :is(input,select,button,a):focus-visible { outline:2px solid var(--reader-accent);outline-offset:2px; }
#main .sm-calc-presets { display:flex;flex-wrap:wrap;gap:5px;margin-top:9px; }
#main .sm-calc-presets>button { min-height:25px;padding:3px 7px;border:1px solid var(--mr-rule);border-radius:4px;background:var(--mr-page);color:var(--mr-muted);font:11px/1.5 var(--reader-font);cursor:pointer; }
#main .sm-calc-presets>button:hover { color:var(--reader-accent);border-color:var(--reader-accent);background:var(--reader-accent-soft); }
#main .sm-recipe-panel .sm-calc-origin { margin-top:12px;color:var(--mr-muted);font-size:11px;line-height:1.7; }
#main .sm-calc-metrics { display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-bottom:8px; }
#main .sm-calc-metrics>div { padding:9px 11px;border:1px solid var(--mr-rule);border-radius:6px;background:var(--mr-wash); }
#main .sm-calc-metrics>div:first-child { background:var(--reader-accent-soft);border-color:transparent; }
#main .sm-calc-metrics span { display:block;font-size:11px;color:var(--mr-muted); }
#main .sm-calc-metrics strong { display:block;margin-top:2px;color:var(--reader-accent);font:700 20px/1.45 var(--reader-font);font-variant-numeric:tabular-nums;overflow-wrap:anywhere; }
#main .sm-recipe-panel .sm-recipe-output :is(th,td) { padding:7px 8px;font-size:12px; }
#main .sm-recipe-panel .sm-recipe-output :is(th,td):last-child { width:32%; }
#main .sm-recipe-panel .sm-recipe-output thead { background:var(--mr-wash); }
#main .sm-recipe-panel .sm-recipe-output th { font-size:10px; }
#main .sm-recipe-panel .sm-recipe-output caption { padding:5px 0 7px;font-size:11px; }
#main .sm-recipe-panel .sm-recipe-final { font-size:12px;line-height:1.7; }
#main .sm-calc-apply { display:inline-flex;align-items:center;justify-content:center;margin:4px 0;padding:7px 12px;min-height:32px;border:1px solid var(--reader-accent);border-radius:5px;color:var(--reader-accent);background:var(--reader-accent-soft);font:600 12px/1.5 var(--reader-font);cursor:pointer; }
#main .sm-calc-source { display:inline-block;margin-top:8px;font-size:11px;color:var(--reader-accent); }
#main .sm-calc-empty { margin:0!important;padding:12px;border:1px solid var(--mr-rule);border-radius:6px;background:var(--mr-wash);font-size:13px;line-height:1.75; }
#main .sm-recipe-panel { border-radius:9px!important; }
#main .sm-recipe-panel :is(input,select) { border-radius:6px!important; }
#main .sm-recipe-panel button { border-radius:5px!important; }
#main .sm-solution-options>label { display:block;margin-top:11px;font:12px/1.7 var(--reader-font);color:var(--mr-muted); }
#main .sm-solution-options :is(input,select) { display:block;width:100%;max-width:100%;min-width:0;min-height:36px;margin-top:4px;padding:6px 9px;border:1px solid var(--theme-line-strong);background:var(--mr-page);color:var(--mr-ink);font:13px/1.5 var(--reader-font); }
#main .sm-solution-component { display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin:12px 0 0;padding:10px 0 0;border:0;border-top:1px solid var(--mr-rule);min-width:0; }
#main .sm-solution-form { grid-column:1 / -1; }
#main .sm-solution-component legend { padding:0 6px 0 0;font:600 12px/1.6 var(--reader-font);color:var(--mr-ink); }
#main .sm-solution-component label { min-width:0;font:12px/1.7 var(--reader-font);color:var(--mr-muted); }
#main .sm-solution-component [hidden] { display:none; }
#main .sm-solution-options [aria-invalid="true"] { border-color:#b44a3c; }
#main .sm-solution-steps { margin:12px 0;padding-left:20px;font:12px/1.75 var(--reader-font);color:var(--mr-ink); }
#main .sm-solution-steps li { margin:5px 0;padding-left:3px; }
#main .sm-solution-steps li::marker { font-weight:700;color:var(--reader-accent); }
#main .sm-solution-basis { margin-top:12px;padding-top:8px;border-top:1px solid var(--mr-rule);font-size:11px;color:var(--mr-muted); }
#main .sm-solution-basis>summary { cursor:pointer;color:var(--reader-accent); }
#main .sm-solution-basis a { color:var(--reader-accent); }
@media(max-width:700px) {
  #main .sm-calc-grid { grid-template-columns:minmax(0,1fr);gap:14px; }
  #main .sm-calc-result-area { padding:12px 0 0;border-left:0;border-top:1px solid var(--mr-rule); }
  #main .sm-calc-workspace[data-calc-kind="batch"] .sm-recipe-inputs { grid-template-columns:repeat(2,minmax(0,1fr)); }
  #main .sm-calc-head { padding:8px 10px; }
  #main .sm-calc-workspace { padding:10px; }
  #main .sm-calc-mode { display:block;padding:9px 10px 0; }
  #main .sm-calc-mode>select { display:block;width:100%;margin-top:4px; }
  #main .sm-calc-metrics strong { font-size:18px; }
}
#main .sm-method-intro>header h2 { margin:0;font:600 16px/1.6 var(--reader-font);color:var(--mr-ink); }
#main .sm-method-intro .sm-reading-row { color:var(--mr-muted);font-size:13px; }
#main .sm-numbering-map>p { font-size:12px;color:var(--mr-muted); }
#main .sm-numbering-scroll { overflow-x:auto; }
#main .sm-numbering-map table { width:100%;border-collapse:collapse;font-size:12px;line-height:1.6; }
#main .sm-numbering-map :is(th,td) { padding:7px 10px;border-bottom:1px solid var(--mr-rule);text-align:left; }
#main .sm-numbering-map th { color:var(--mr-muted);font-weight:500; }
#main .sm-numbering-map :is(th,td):first-child,#main .sm-numbering-map :is(th,td):last-child { white-space:nowrap;font-variant-numeric:tabular-nums; }
#main .sm-recipe-notes { margin:10px 0;border:1px solid #e6d4b2;border-radius:6px;background:#fffbf2; }
#main .sm-recipe-note { padding:9px 11px;color:var(--mr-ink);font-size:12px;line-height:1.65; }
#main .sm-recipe-note+.sm-recipe-note { border-top:1px solid #e6d4b2; }
#main .sm-recipe-note>strong { color:#8b5a19;font-size:12px; }
#main .sm-recipe-note>p { margin:4px 0; }
#main .sm-recipe-note-link { display:inline-block;font-size:11px;color:var(--reader-accent);text-underline-offset:3px; }
html[data-theme="dark"] #main .sm-recipe-notes { border-color:#665035;background:#2b261d; }
html[data-theme="dark"] #main .sm-recipe-note+.sm-recipe-note { border-color:#665035; }
html[data-theme="dark"] #main .sm-recipe-note>strong { color:#e4b678; }
html[data-theme="dark"] #main .sm-reading-caution { color:#e4b678; }
html[data-theme="dark"] #main .sm-pending-references>summary { color:#d6ae78; }
@media(max-width:1100px) { #main .sm-reader-controls [data-sm-font]>span,#main .sm-reader-controls [data-sm-focus]>span { display:none; } }
@media(max-width:600px) {
  #main .sm-reader-controls :is([data-sm-prev],[data-sm-next],.sm-control-divider) { display:none; }
  #main .sm-reader-controls { width:100%;justify-content:space-between; }
  #main .sm-reader-controls [data-sm-focus]>span { display:inline; }
  #main .sm-protocol { padding-inline:18px; }
  #main .sm-item-details>.sm-nested-items { padding-left:9px; }
  #main .sm-reaction-series .katex-display>.katex>.katex-html { display:block;white-space:nowrap; }
  #main .sm-recipe-panel { padding:0; }
}
@media(max-width:600px) {
  #main .sm-indicator-methods button { padding:9px 7px;gap:4px;min-height:66px; }
  #main .sm-indicator-methods button>span { display:none; }
  #main .sm-indicator-methods button>b { font-size:12px;gap:4px; }
  #main .sm-indicator-methods h2 small { font-size:10px;margin-left:6px; }
  #main .sm-manual-deck { font-size:12px;line-height:1.65; }
  #main .sm-reading-shortcuts a { min-height:38px; }
  #main .sm-protocol-section>header { padding:7px 9px; }
  #main .sm-item-name { font-size:inherit; }
  #main .sm-shared-body { padding-inline:10px; }
  #main .sm-manual-topline .sm-detail-actions button { min-width:40px;min-height:40px; }
  #main .sm-method-panel>[data-indicator-method="true"]:not(.sm-method-start) { display:block;padding-block:9px; }
  #main .sm-method-panel>[data-indicator-method="true"]>span { display:none; }
}
@media(prefers-reduced-motion:reduce) { #main *,#main *::before,#main *::after { scroll-behavior:auto!important;transition:none!important;animation:none!important; } }
@media print {
  html[data-theme] { background:white!important;--paper:white;--paper-alt:white; }
  html[data-theme] body[data-page="method"] { padding-top:0!important;background:white!important; }
  body[data-page="method"] .skip-link { display:none!important; }
  body[data-page="method"] :is(.site-search-layer,.site-search-scrim,.site-search-dialog) { display:none!important; }
  #main[data-soil-methods="detail"] { min-height:0;background:white!important; }
  #main :is(.sm-recipe-toggle,.sm-recipe-panel) { display:none!important; }
  html[data-theme] body[data-page="method"] { --theme-ink:#111;--theme-text:#111;--theme-muted:#444;--theme-paper:white;--theme-surface:white;--theme-line:#ccc;--theme-surface-soft:#f6f6f6;color:#111;background:white; }
  body[data-page="method"] :is(.site-header,.site-footer),#main :is(.sm-nav,.sm-toc,.sm-reading-shortcuts,.sm-detail-actions,.sm-paper-toolbar,.sm-reader-end,.sm-toc-dialog,.sm-image-viewer,.sm-indicator-methods,.sm-figure-switch),#main .sm-source-figure>figcaption button { display:none!important; }
  body.sm-focus-mode #main .sm-manual-head { display:block; }
  #main .sm-shell { width:100%;max-width:none; }
  #main .sm-manual-hero { padding:0 0 20px; }
  #main .sm-manual-head { padding:0; }
  #main .sm-manual-source strong { display:block; }
  #main .sm-manual-copy h1 { font-size:23px; }
  #main .sm-title-techniques { font-size:12px; }
  #main .sm-reading-layout { display:block; }
  #main .sm-reader { padding:0; }
  #main .sm-manual-paper { border:0;box-shadow:none; }
  #main .sm-protocol { padding:0; }
  #main .sm-protocol-section { padding:10px 0; }
  #main .sm-protocol-section :is(h2,h3,h4) { font-size:15px;break-after:avoid; }
  #main .sm-reading-row,#main.sm-large-type .sm-reading-row,#main :is(.sm-role-reagents,.sm-role-apparatus,.sm-role-materials) .sm-reading-row { font-size:10pt;line-height:1.55; }
  #main .sm-data-table :is(th,td) { font-size:9pt;min-width:0;padding:6px; }
  #main :is(.sm-table-scroll,.sm-equation) { overflow:visible; }
  #main .sm-formula { break-inside:avoid;padding:7px 10px; }
  #main .sm-formula .sm-equation { font-size:14px; }
  #main .sm-source-figure { break-inside:avoid; }
  #main .sm-figure-image img { max-height:165mm; }
  #main .sm-method-citation { font-size:11px;break-inside:avoid; }
  #main .sm-item-name { font-size:inherit; }
  #main .sm-shared-context { border:0; }
  #main .sm-shared-context>summary { display:none; }
  #main .sm-shared-body { padding:0; }
  #main .sm-protocol-section>header { background:#f2f4f7;border-left-color:#555; }
  #main .sm-protocol-section>header :is(h2,h3,h4),#main .sm-source-number { color:#222; }

}
/* Choices inside a source record use the same compact pattern on every page. */
#main [data-sm-choice-inactive]{display:none!important}
#main .sm-searching-choices .sm-toc-entry[data-sm-choice-inactive]:not([hidden]){display:grid!important;opacity:.78}
#main .sm-reading-choices{margin:16px 0 14px;padding:12px;border:1px solid var(--line,#dce3ee);border-radius:10px;background:var(--panel,#fff);scroll-margin-top:100px}
#main .sm-choice-heading{display:flex;align-items:center;gap:8px;margin-bottom:9px;font-size:13px;color:var(--ink,#20314b)}
#main .sm-choice-heading>span{font-size:11px;color:var(--muted,#708099)}
#main .sm-reading-choices [role="tablist"]{display:flex;flex-wrap:wrap;gap:7px}
#main .sm-reading-choices [role="tab"]{display:flex;align-items:flex-start;gap:8px;flex:1 1 210px;min-width:0;max-width:100%;padding:9px 10px;border:1px solid var(--line,#dce3ee);border-radius:7px;background:transparent;color:var(--ink,#20314b);text-align:left;font:inherit;font-size:12px;line-height:1.6;cursor:pointer;transition:background .15s,border-color .15s}
#main .sm-reading-choices [role="tab"]>span{display:grid;place-items:center;flex:none;min-width:19px;height:19px;border-radius:4px;background:var(--soft,#f0f3f8);font-size:10px;font-weight:700}
#main .sm-reading-choices [role="tab"]>b{font-weight:550;overflow-wrap:anywhere}
#main .sm-reading-choices [role="tab"][aria-selected="true"]{border-color:#4667e8;background:#edf2ff;color:#2c51be}
#main .sm-reading-choices [role="tab"][aria-selected="true"]>span{background:#4667e8;color:#fff}
#main .sm-reading-choices [role="tab"]:focus-visible{outline:2px solid #4667e8;outline-offset:2px}
#main .sm-block-choice-panel{min-width:0}
#main .sm-block-choice-panel>.sm-described-option{margin-bottom:10px}
html[data-theme="dark"] #main .sm-reading-choices [role="tab"][aria-selected="true"]{background:#1e2c4a;color:#b6c9ff;border-color:#7d9bff}
@media(max-width:600px){#main .sm-reading-choices{padding:10px;margin:12px 0}#main .sm-reading-choices [role="tab"]{flex-basis:145px;padding:8px;font-size:11.5px}}
@media print{#main .sm-reading-choices [role="tab"][aria-selected="false"]{display:none}#main .sm-reading-choices{break-inside:avoid}}
#main .sm-protocol .sm-reading-choices [role="tab"]{border-radius:7px!important;font-family:inherit!important}
#main .sm-protocol .sm-reading-choices [role="tab"] b{font-weight:550!important}
#main .sm-reading-choices [role="tablist"]{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,210px),1fr))}
#main .sm-choice-root>header,#main .sm-choice-root-link{display:none!important}
#main .sm-protocol .sm-choice-root{border:0;margin:0;padding:0}
#main .sm-choice-root>.sm-section-body:empty{display:none}
@media(max-width:600px){#main .sm-reading-choices [role="tablist"]{grid-template-columns:repeat(auto-fit,minmax(min(100%,140px),1fr))}}
#main .sm-choice-reference>.sm-protocol-section{margin:0;padding:10px 14px;border:0}
#main .sm-choice-reference>.sm-protocol-section>header{display:none}
#main .sm-choice-support-toc{margin-top:10px;border-top:1px solid var(--mr-rule)}
#main .sm-choice-support-toc a{font-size:11.5px;color:var(--mr-muted)}
#main .sm-choice-reference>summary{grid-template-columns:minmax(0,1fr) 14px}
#main .sm-choice-reference>summary::after,#main .sm-choice-support-toc>summary::after{content:"";display:block;width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg);justify-self:end;transition:transform .15s}
#main .sm-choice-reference[open]>summary::after,#main .sm-choice-support-toc[open]>summary::after{transform:rotate(225deg)}
#main .sm-choice-support-library>header>p{margin-left:0}
#main .sm-choice-support-toc>summary{display:grid;grid-template-columns:minmax(0,1fr) 14px;align-items:center}

/* Reagent references follow the selected protocol down to individual recipes. */
[data-sm-reagent-excluded],.sm-choice-root>.sm-clause-number { display:none!important; }
.sm-choice-root.sm-clause {display:block;}

/* Keep numbered notices on the same badge rail as their sibling notes. */
#main .sm-role-notes .sm-reading-row:has(> .sm-step-number:not(:empty)),
#main .sm-role-caution .sm-reading-row:has(> .sm-step-number:not(:empty)) { grid-template-columns:38px minmax(0,1fr); }
#main .sm-reading-row.sm-reading-note:has(> .sm-step-number:not(:empty)) { padding:8px 0;margin:0;border:0;border-bottom:1px solid var(--mr-rule);background:none;font-size:14px;line-height:1.65; }
#main .sm-reading-row.sm-reading-note:has(> .sm-step-number:not(:empty)):last-child { border-bottom:0; }
#main .sm-reading-row.sm-reading-note:has(> .sm-step-number:not(:empty)) > .sm-item-copy { padding:0;border:0;background:none; }
#main .sm-numbered-note { font-size:14px;line-height:1.65; }
#main .sm-prep-directions>ol { padding-left:1.6em;margin:8px 0; }
#main .sm-prep-directions>ol>li { padding:2px 0 7px;line-height:1.75; }
#main .sm-prep-directions>ol>li::marker { color:var(--reader-accent);font-weight:700; }
#main.sm-large-type .sm-reading-row.sm-reading-note:has(> .sm-step-number:not(:empty)),#main.sm-large-type .sm-numbered-note { font-size:16px;line-height:1.75; }
@media(max-width:700px) { #main.sm-large-type .sm-reading-row.sm-reading-note:has(> .sm-step-number:not(:empty)),#main.sm-large-type .sm-numbered-note { font-size:17px; } }
#main .sm-reading-row.sm-source-warning:has(> .sm-step-number:not(:empty)) > .sm-item-copy { border-left-color:#ae8158; }

#main .sm-reading-row:not(.sm-wide-step-number):has(> .sm-step-number:not(:empty)) { grid-template-columns:38px minmax(0,1fr); }
#main .sm-step-title { color:var(--theme-text);font-weight:650; }

/* Rich labels remain one inline text run; scripts are never flex items. */
#main .sm-related-protocols>div { display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:10px; }
#main .sm-related-protocols a { min-width:0;justify-content:space-between;gap:12px;line-height:1.7;padding:12px 14px;text-decoration:none;transition:background .16s,border-color .16s; }
#main .sm-related-label { display:block;min-width:0;overflow-wrap:anywhere; }
#main .sm-related-protocols a>img { flex:none; }
#main .sm-related-protocols a:hover { border-color:var(--reader-accent);background:var(--reader-accent-soft); }
#main .sm-related-protocols a:focus-visible { outline:2px solid var(--reader-accent);outline-offset:3px; }
#main .sm-protocol-section .sm-inline-heading:first-child { margin-top:8px; }
#main .sm-protocol-section .sm-inline-heading+.sm-reading-row { margin-top:0; }
#main .sm-indicator-methods .sm-method-label { display:block;min-width:0; }
@media (prefers-reduced-motion:reduce) { #main .sm-related-protocols a { transition:none; } }

#main .sm-inline-heading-number { display:inline-block;min-width:1.7em;margin-right:8px;text-align:center;font-variant-numeric:tabular-nums; }
/* The same number column and title origin are shared by every chapter depth. */
#main .sm-protocol-section>header,
#main .sm-protocol-section:is([data-depth="1"],[data-depth="2"])>header { padding-inline:12px;border-left-width:3px; }
#main .sm-chapter-heading { display:grid;grid-template-columns:54px minmax(0,1fr);gap:12px;align-items:start; }
#main .sm-chapter-heading> :is(h2,h3,h4) { grid-column:2;grid-row:1; }
#main .sm-chapter-heading>.sm-source-number,
#main .sm-protocol-section[data-depth="0"]>header .sm-source-number { grid-column:1;grid-row:1;box-sizing:border-box;min-width:0;width:100%;padding:2px;border-radius:4px;background:var(--mr-page);text-align:center;white-space:nowrap;font-size:18px;font-weight:700;line-height:1.4;font-variant-numeric:tabular-nums; }
#main .sm-protocol-section:is([data-depth="1"],[data-depth="2"])>header :is(h2,h3,h4) { font-size:12px; }
#main .sm-protocol-section:is([data-depth="1"],[data-depth="2"])>header .sm-source-number { font-size:12px; }
#main .sm-protocol-section .sm-inline-heading,
#main .sm-inline-protocol>.sm-inline-protocol-title { font-size:12px; }
#main.sm-large-type .sm-chapter-heading>.sm-source-number,
#main.sm-large-type .sm-protocol-section[data-depth="0"]>header .sm-source-number { font-size:20px; }
#main.sm-large-type .sm-protocol-section:is([data-depth="1"],[data-depth="2"])>header .sm-source-number { font-size:12px; }
#main .sm-chapter-heading:has(>.sm-source-number:empty) { grid-template-columns:minmax(0,1fr); }
#main .sm-chapter-heading:has(>.sm-source-number:empty)> :is(h2,h3,h4) { grid-column:1; }
@media (max-width:700px) { #main .sm-chapter-heading { grid-template-columns:54px minmax(0,1fr);gap:10px; } }