/* Compounds V3 — intentionally inherits the live Mendeleev body/background from /assets/css/site.css */
:root{
  --cp-text:var(--text,#17231e);--cp-muted:var(--muted,#6a756e);--cp-line:var(--line,#d7ddd6);
  --cp-surface:var(--surface,#fffdf8);--cp-surface2:var(--surface2,#f0ede4);
  --cp-green:var(--green,#0f6b57);--cp-green2:var(--green2,#0a4a3d);
  --cp-amber:var(--amber,#d99632);--cp-shadow:var(--shadow2,0 10px 28px rgba(25,40,33,.07));
  --cp-max:1240px;
}
.compound-page,.compound-hub{width:min(var(--cp-max),calc(100% - 36px));margin:auto;padding:28px 0 34px;color:var(--cp-text)}
.compound-page a,.compound-hub a{text-decoration:none}
.cp-breadcrumb{font-size:.78rem;color:var(--cp-muted);margin:8px 0 28px}.cp-breadcrumb a:hover{text-decoration:underline}
.cp-hero{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(330px,.82fr);gap:54px;align-items:start;padding:20px 0 58px}
.cp-kicker{font-size:.72rem;text-transform:uppercase;letter-spacing:.13em;font-weight:850;color:var(--cp-green);margin-bottom:11px}
.cp-hero h1{font-size:clamp(3.7rem,7vw,7.2rem);letter-spacing:-.075em;line-height:.88;margin:0 0 17px}
.cp-formula{font-size:clamp(2.5rem,5vw,4.7rem);font-weight:850;letter-spacing:-.045em;margin:10px 0 20px}
.cp-lede{font-size:1.12rem;line-height:1.72;color:var(--cp-muted);max-width:800px;margin:0}
.cp-plain-note{margin:22px 0 0;padding:15px 18px;border-left:3px solid var(--cp-amber);background:color-mix(in srgb,var(--cp-surface) 80%,transparent);font-size:.95rem}
.cp-facts{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--cp-line);border-left:1px solid var(--cp-line);background:var(--cp-surface)}
.cp-fact{padding:19px;border-right:1px solid var(--cp-line);border-bottom:1px solid var(--cp-line)}.cp-fact strong{display:block;font-size:1.18rem}.cp-fact span{font-size:.7rem;text-transform:uppercase;letter-spacing:.09em;color:var(--cp-muted)}
.depth-nav{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:0 0 24px}
.depth-nav a{display:block;border:1px solid var(--cp-line);background:var(--cp-surface);padding:16px 18px;border-radius:12px;box-shadow:var(--cp-shadow)}
.depth-nav b{display:block;font-size:.78rem;text-transform:uppercase;letter-spacing:.1em;color:var(--cp-green);margin-bottom:4px}.depth-nav span{font-size:.88rem;color:var(--cp-muted)}
.cp-section{padding:64px 0;border-top:1px solid var(--cp-line)}
.cp-head{max-width:820px;margin-bottom:30px}.cp-head h2{font-size:clamp(2rem,4vw,3.15rem);line-height:1.08;letter-spacing:-.045em;margin:0 0 13px}.cp-head p{font-size:1.02rem;line-height:1.7;color:var(--cp-muted);margin:0}
.cp-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.cp-card{background:var(--cp-surface);border:1px solid var(--cp-line);padding:24px;border-radius:14px}.cp-card h3{margin:4px 0 9px;font-size:1.22rem}.cp-card p{margin:0;color:var(--cp-muted);line-height:1.62}.cp-card .mini{font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:var(--cp-green);font-weight:850}
.formula-zone{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:start}
.atom-formula{font-size:clamp(3.8rem,8vw,6.6rem);font-weight:900;letter-spacing:-.055em;line-height:1;padding:12px 0 28px}.atom-formula a{display:inline}.atom-formula sub{font-size:.4em}.atom-c{color:#252b33}.atom-h{color:#557a9a}.atom-o{color:#b43a3a}
.atom-list{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.atom-chip{background:var(--cp-surface);border:1px solid var(--cp-line);padding:17px}.atom-chip b{font-size:1.35rem;display:block}.atom-chip span{font-size:.8rem;color:var(--cp-muted)}
.cp-toggle{display:inline-flex;border:1px solid var(--cp-line);padding:3px;border-radius:9px;background:var(--cp-surface);margin-bottom:17px}.cp-toggle button{border:0;background:transparent;padding:8px 12px;border-radius:6px;color:var(--cp-muted);cursor:pointer}.cp-toggle button.is-active{background:var(--cp-text);color:var(--cp-surface)}
.mass-row{display:grid;grid-template-columns:90px 1fr 68px;gap:12px;align-items:center;margin:14px 0;font-size:.86rem}.mass-track{height:9px;background:color-mix(in srgb,var(--cp-line) 62%,transparent);overflow:hidden}.mass-track i{display:block;height:100%;background:var(--cp-green)}.mass-row strong{text-align:right;font-variant-numeric:tabular-nums}.cp-note{font-size:.8rem;color:var(--cp-muted)}
.structure-shell{background:var(--cp-surface);border:1px solid var(--cp-line);border-radius:16px;overflow:hidden}
.structure-tabs{display:flex;gap:4px;padding:8px;border-bottom:1px solid var(--cp-line);overflow-x:auto}.structure-tabs button{border:0;background:transparent;padding:10px 13px;border-radius:7px;white-space:nowrap;cursor:pointer;color:var(--cp-muted);font-weight:750}.structure-tabs button[aria-selected="true"]{background:var(--cp-text);color:var(--cp-surface)}
.structure-stage{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(330px,.88fr);min-height:520px}.structure-visual{display:flex;align-items:center;justify-content:center;min-width:0;padding:30px;border-right:1px solid var(--cp-line);background:color-mix(in srgb,var(--cp-surface) 92%,white)}
.structure-panel{width:100%;margin:0}.structure-panel img{display:block;width:100%;height:400px;object-fit:contain}.structure-panel figcaption{max-width:700px;margin:13px auto 0;font-size:.8rem;line-height:1.55;color:var(--cp-muted)}
.structure-copy{padding:30px}.structure-copy h3{font-size:1.45rem;margin:0 0 9px}.structure-copy p{color:var(--cp-muted);line-height:1.68}
.legend-wedge{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin:19px 0}.legend-wedge div{border:1px solid var(--cp-line);padding:11px;font-size:.78rem}.legend-wedge b{display:block;margin-bottom:3px;color:var(--cp-text)}
.eq-box{margin-top:24px;background:var(--cp-surface2);padding:19px}.eq-row{display:grid;grid-template-columns:82px 1fr 62px;gap:10px;align-items:center;margin:9px 0;font-size:.8rem}.eq-bar{height:8px;background:color-mix(in srgb,var(--cp-line) 72%,transparent)}.eq-bar i{display:block;height:100%;background:var(--cp-green)}.eq-row strong{text-align:right}
.compare-table{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--cp-line);border-left:1px solid var(--cp-line)}.compare-table article{background:var(--cp-surface);padding:23px;border-right:1px solid var(--cp-line);border-bottom:1px solid var(--cp-line)}.compare-table h3{margin:5px 0}.compare-table .formula{font-size:1.35rem;font-weight:800}.compare-table p{color:var(--cp-muted);font-size:.88rem}
.mechanism{display:grid;grid-template-columns:1.05fr .95fr;gap:38px}.why-flow{display:grid;gap:0}.why-step{display:grid;grid-template-columns:48px 1fr;gap:12px;padding:15px 0;border-bottom:1px solid var(--cp-line)}.why-step b{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--cp-green);color:#fff}.why-step strong{display:block}.why-step span{color:var(--cp-muted);font-size:.9rem}
.advanced{display:grid;gap:10px}.advanced details{background:var(--cp-surface);border:1px solid var(--cp-line);border-radius:12px;padding:0 18px}.advanced summary{cursor:pointer;font-weight:800;padding:16px 0}.advanced details p{color:var(--cp-muted);margin:0 0 18px;line-height:1.68}
.data-table{width:100%;border-collapse:collapse;background:var(--cp-surface)}.data-table th,.data-table td{padding:14px 12px;border-bottom:1px solid var(--cp-line);text-align:left;vertical-align:top}.data-table th{width:34%;color:var(--cp-muted);font-size:.8rem}.data-table td{font-variant-numeric:tabular-nums}
.hub-hero{padding:38px 0 52px;max-width:930px}.hub-hero h1{font-size:clamp(3.5rem,7vw,6.7rem);line-height:.9;letter-spacing:-.065em;margin:0 0 20px}.hub-hero p{font-size:1.1rem;line-height:1.7;color:var(--cp-muted);max-width:780px}
.search-box{position:relative;max-width:850px;margin:20px 0 52px}.search-box input{width:100%;border:1px solid var(--cp-line);background:var(--cp-surface);color:var(--cp-text);border-radius:999px;padding:17px 50px 17px 20px;font-size:1.03rem;outline:none}.search-box input:focus{border-color:var(--cp-green);box-shadow:0 0 0 4px color-mix(in srgb,var(--cp-green) 15%,transparent)}.results{position:absolute;top:calc(100% + 8px);left:0;right:0;z-index:10;background:var(--cp-surface);border:1px solid var(--cp-line);border-radius:14px;padding:8px;box-shadow:var(--cp-shadow)}.result-link{display:flex;justify-content:space-between;gap:18px;padding:13px;border-radius:9px}.result-link:hover{background:var(--cp-surface2)}.result-link span span,.result-link small{color:var(--cp-muted)}
.door-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.door{background:var(--cp-surface);border:1px solid var(--cp-line);padding:22px;border-radius:14px}.door b{display:block;font-size:1.08rem;margin-bottom:5px}.door span{font-size:.85rem;color:var(--cp-muted)}
@media(max-width:900px){.cp-hero,.formula-zone,.structure-stage,.mechanism{grid-template-columns:1fr}.structure-visual{border-right:0;border-bottom:1px solid var(--cp-line)}.depth-nav,.cp-grid-3,.compare-table,.door-grid{grid-template-columns:1fr}.cp-hero{gap:28px}.structure-panel img{height:350px}}
@media(max-width:560px){.compound-page,.compound-hub{width:min(100% - 24px,var(--cp-max))}.cp-facts,.atom-list{grid-template-columns:1fr 1fr}.atom-list .atom-chip:last-child{grid-column:1/-1}.mass-row{grid-template-columns:74px 1fr 58px}.structure-visual{padding:18px}.structure-panel img{height:285px}.structure-copy{padding:22px}.legend-wedge{grid-template-columns:1fr}.cp-section{padding:48px 0}}

/* Wave 1 refinement: compact the Compounds footer without modifying global site CSS. */
.pt2-site-chrome.pt2-site-footer{margin-top:0!important;padding-top:18px!important}
.pt2-site-chrome.pt2-site-footer .footer-note{margin-top:0!important}
.pt2-site-chrome.pt2-site-footer footer{margin-top:8px!important;padding-top:10px!important}
.cp-visual-card{background:var(--cp-surface);border:1px solid var(--cp-line);border-radius:16px;padding:22px;overflow:hidden}
.cp-visual-card img{display:block;width:100%;height:360px;object-fit:contain}
.cp-visual-card figcaption{font-size:.8rem;line-height:1.55;color:var(--cp-muted);margin-top:12px}
.cp-two{display:grid;grid-template-columns:1fr 1fr;gap:18px}.cp-callout{border-left:3px solid var(--cp-green);padding:13px 16px;background:var(--cp-surface);color:var(--cp-muted);line-height:1.62}.cp-equation{font-size:clamp(1.45rem,3vw,2.1rem);font-weight:850;letter-spacing:-.025em;background:var(--cp-surface2);padding:20px;border-radius:12px;overflow-x:auto}.cp-pillrow{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0}.cp-pill{border:1px solid var(--cp-line);background:var(--cp-surface);padding:7px 10px;border-radius:999px;font-size:.78rem;color:var(--cp-muted)}
.collection-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.collection-card{background:var(--cp-surface);border:1px solid var(--cp-line);padding:20px;border-radius:14px;display:block}.collection-card:hover{transform:translateY(-1px);box-shadow:var(--cp-shadow)}.collection-card .mini{font-size:.69rem;text-transform:uppercase;letter-spacing:.1em;font-weight:850;color:var(--cp-green)}.collection-card h3{margin:6px 0 5px;font-size:1.25rem}.collection-card .formula{font-size:1.15rem;font-weight:800}.collection-card p{color:var(--cp-muted);font-size:.86rem;line-height:1.55;margin:8px 0 0}
@media(max-width:900px){.cp-two,.collection-grid{grid-template-columns:1fr}.cp-visual-card img{height:320px}}
@media(max-width:560px){.cp-visual-card img{height:255px}.pt2-site-chrome.pt2-site-footer{padding-top:10px!important}}

/* Visual Standard V1 / Compounds V6 */
.cp-visual-card img,.structure-panel img{background:#fffdf8;border-radius:10px}
.cp-visual-card figcaption,.structure-panel figcaption{max-width:760px}

/* Compounds V7 — EN master Batch 01 */
.atom-n{color:#557a9a}.atom-na{color:#6e83a8}.atom-cl{color:#0f6b57}.atom-s{color:#d99632}.atom-ca{color:#8b6b56}
.atom-list{grid-template-columns:repeat(auto-fit,minmax(120px,1fr))}
.cp-visual-card img{max-height:520px;object-fit:contain}
@media(max-width:560px){.cp-visual-card img{max-height:390px}}

/* Compounds V8 — Batch 02 */
.atom-p{color:#d99632}.atom-si{color:#705b9b}

/* Compounds V9 — EN Master Batch 03 */

/* Compounds V10 — EN Master Batch 04 */