:root{font-family:Inter,"Segoe UI",Arial,sans-serif;color:#243c33;background:#f4f6f2;font-synthesis:none;--ink:#243c33;--muted:#6b7b72;--line:#dfe5dc;--accent:#245b46;--soft:#eef4ed;--paper:#fff;--warm:#f8f4e8;--amber:#82651d;font-size:15px;line-height:1.55}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}a{color:var(--accent);text-decoration:none}button{cursor:pointer}a:hover{text-decoration:underline}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #85bca4;outline-offset:3px}button{color:inherit}h1,h2,h3,p{margin:0}h1,h2,h3,strong{font-weight:600}h1{font-size:36px;letter-spacing:-1.2px;line-height:1.2}h2{font-size:21px;letter-spacing:-.35px;line-height:1.35}h3{font-size:16px;line-height:1.4}sub{font-size:.72em;line-height:0;vertical-align:baseline;position:relative;bottom:-.25em}sup{font-size:.72em;line-height:0}button[hidden],[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.skip-link{position:fixed;top:-70px;left:20px;padding:10px;background:white;z-index:50}.skip-link:focus{top:10px}.passport-main>div:first-child,.page-heading>div{min-width:0}.passport-count{flex-shrink:0}.page-heading h1,.breadcrumb{overflow-wrap:anywhere}
.site-header{background:var(--paper);border-bottom:1px solid var(--line)}.header-inner{max-width:1200px;margin:auto;min-height:88px;padding:0 34px;display:flex;gap:35px;align-items:center}.brand{display:flex;align-items:center;gap:12px;color:var(--ink);font-weight:600;font-size:18px;white-space:nowrap}.brand:hover{text-decoration:none}.brand-mark{height:39px;width:39px;display:grid;place-items:center;background:var(--accent);color:white;border-radius:9px;font-size:24px;font-weight:400}.brand-sub{display:block;font-size:10px;letter-spacing:1.7px;color:var(--muted);margin-top:1px;font-weight:500}.top-nav{display:flex;gap:28px;margin-left:auto;align-self:stretch;align-items:center}.top-nav a{color:var(--muted);height:100%;display:flex;align-items:center;border-bottom:2px solid transparent;font-size:14px}.top-nav a.active{color:var(--accent);border-color:var(--accent);font-weight:600}.prototype-label{font-size:11px;padding:3px 8px;border:1px solid var(--line);border-radius:5px;color:var(--muted)}
.page-wrap{max-width:1200px;margin:auto;padding:30px 34px 0}.search-shell{position:relative;margin-bottom:30px;z-index:5}#global-search{display:flex;align-items:center;gap:12px;background:var(--paper);border:1px solid #d1dcd0;border-radius:10px;padding:7px 8px 7px 19px;box-shadow:0 3px 12px #283e2d04}.search-icon{font-size:29px;line-height:1;color:#7c8e80}#query{width:100%;min-width:0;border:0;background:transparent;padding:9px 0;outline-offset:2px;color:var(--ink)}#query::placeholder{color:#839084}.button{border:1px solid var(--line);border-radius:7px;background:var(--paper);padding:9px 14px;display:inline-flex;align-items:center;justify-content:center;gap:15px;font-size:13px;font-weight:500;min-height:39px;white-space:normal;text-align:center}.button:hover{background:#f0f4ee;text-decoration:none}.button.primary{color:white;background:var(--accent);border-color:var(--accent)}.button.primary:hover{background:#194832}.button.ghost{border:0;background:transparent;padding-left:0;color:var(--accent)}.button.small{padding:6px 10px;min-height:33px;font-size:12px}.button.selected{background:var(--accent);border-color:var(--accent);color:white}.suggestions{position:absolute;top:calc(100% + 5px);left:0;right:0;background:var(--paper);border:1px solid var(--line);box-shadow:0 14px 32px #20362612;border-radius:9px;padding:8px;max-height:400px;overflow:auto}.suggestions a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 12px;border-radius:5px}.suggestions a:hover{background:var(--soft);text-decoration:none}.suggestions small{font-size:12px;color:var(--muted)}
.intro{display:flex;justify-content:space-between;gap:24px;align-items:end;margin:8px 0 29px}.eyebrow{font-size:10px;letter-spacing:1.8px;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:9px}.intro p,.page-description{color:var(--muted);font-size:14px;margin-top:10px;max-width:660px}.intro-stats{display:flex;gap:30px;padding-bottom:2px}.intro-stats div{font-size:12px;color:var(--muted)}.intro-stats strong{display:block;color:var(--ink);font-size:28px;letter-spacing:-.8px;line-height:1.3}.home-columns{display:grid;grid-template-columns:1.08fr 1fr;gap:22px}.panel{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:24px}.panel-heading{display:flex;justify-content:space-between;gap:15px;align-items:baseline;margin-bottom:18px}.panel-heading>a{font-size:12px;white-space:nowrap}.panel-label{display:block;color:var(--muted);font-size:12px;margin-top:4px}.class-list{display:grid;gap:2px}.class-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid #edf0e9}.class-row:last-child{border-bottom:0}.class-row>a:first-child{color:var(--ink);font-size:14px;display:flex;align-items:center;gap:10px}.class-marker{height:7px;width:7px;display:inline-block;border:1.5px solid #8da88f;flex-shrink:0}.count-link{color:var(--muted);font-size:12px;white-space:nowrap}.count-link .arrow{padding-left:10px;color:#93a58f}.elements-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:6px}.element-tile{border:1px solid var(--line);border-radius:6px;min-height:62px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--ink);position:relative;background:#fafbf8;padding:7px 2px}.element-tile:hover{background:#eaf3e8;border-color:#95b495;text-decoration:none}.element-tile strong{font-size:18px;font-weight:500}.element-tile span{font-size:9px;color:var(--muted);max-width:100%;overflow-wrap:anywhere}.element-tile .atomic{font-size:8px;position:absolute;left:5px;top:3px;color:#97a092}.elements-note{color:var(--muted);font-size:11px;margin-top:15px}.home-lower{display:grid;grid-template-columns:1.08fr 1fr;gap:22px;margin-top:22px}.entry-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.entry{background:#f6f8f3;border:1px solid var(--line);border-radius:8px;padding:15px 13px;color:var(--ink);min-width:0;transition:background .12s}.entry:hover{background:#eaf2e7;text-decoration:none;border-color:#a3b79d}.entry .entry-label{font-size:12px;display:block}.entry strong{font-size:26px;line-height:1.7;display:block;letter-spacing:-.7px}.entry .entry-arrow{font-size:17px;color:#90a288;display:block;text-align:right;line-height:1}.entry-grid.roles{grid-template-columns:1fr 1fr}.home-lower .panel{padding-top:20px}.home-lower h2{font-size:17px}.home-bottom-note{font-size:11px;color:var(--muted);margin:20px 0 4px}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;font-size:12px;color:var(--muted);margin:0 0 21px}.breadcrumb span.separator{color:#a9b6a5}.page-heading{display:flex;justify-content:space-between;align-items:start;gap:20px;margin-bottom:24px}.page-heading h1{font-size:30px}.page-count{font-size:12px;color:var(--muted);white-space:nowrap;margin-top:8px}.back-link{font-size:12px;color:var(--muted);display:inline-flex;align-items:center;gap:6px;margin-bottom:18px}.section-space{margin-top:23px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}.section-heading .muted{font-size:12px}.muted{color:var(--muted)}.small{font-size:12px}.empty{padding:40px 20px;border:1px dashed var(--line);border-radius:8px;color:var(--muted);text-align:center;background:#ffffff6b}.filter-bar{display:flex;flex-wrap:wrap;gap:9px;align-items:center;margin-bottom:20px}.filter-bar label{font-size:12px;color:var(--muted)}.filter-bar select{padding:8px 30px 8px 10px;border:1px solid var(--line);border-radius:6px;background:white;color:var(--ink);font-size:12px;max-width:100%}.filter-chip{display:inline-flex;align-items:center;gap:9px;padding:5px 10px;background:#e9f0e4;border:1px solid #d9e4d2;border-radius:5px;font-size:12px;color:var(--accent)}.plain-link{font-size:12px}.substance-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:11px}.substance-tile{background:var(--paper);border:1px solid var(--line);border-radius:9px;display:flex;justify-content:space-between;align-items:center;gap:10px;min-height:78px;padding:15px 17px;color:var(--ink);min-width:0}.substance-tile:hover{background:#f0f5ec;border-color:#a6bc9e;text-decoration:none}.substance-tile .formula{font-size:20px;overflow-wrap:anywhere;line-height:1.55}.substance-tile small{color:var(--muted);font-size:10px;display:block;margin-top:4px}.substance-tile .tile-arrow{color:#98a895;font-size:17px}.more-row{display:flex;align-items:center;justify-content:center;gap:15px;margin-top:24px}.more-row span{font-size:12px;color:var(--muted)}
.tree{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;align-items:start}.tree .panel{padding:20px}.tree-children{padding-left:20px;margin-top:8px;border-left:1px solid var(--line)}.tree-item{padding:7px 0;display:flex;justify-content:space-between;gap:12px}.tree-item a:first-child{font-size:14px}.tree-root{font-size:18px;font-weight:600}.tree-count{color:var(--muted);font-size:12px;white-space:nowrap}.element-page-grid{display:grid;grid-template-columns:repeat(9,minmax(0,1fr));gap:11px}.element-page-grid .element-tile{min-height:100px}.element-page-grid .element-tile strong{font-size:27px}.element-page-grid .element-tile span{font-size:11px}.element-page-grid .element-tile .atomic{font-size:10px;left:8px;top:7px}.tabs{display:flex;flex-wrap:wrap;gap:8px;padding-bottom:16px;margin-bottom:20px;border-bottom:1px solid var(--line)}.state-grid{display:flex;flex-wrap:wrap;gap:10px}.oxidation-tile{min-width:112px;padding:18px;background:white;border:1px solid var(--line);border-radius:9px;color:var(--ink)}.oxidation-tile:hover{background:var(--soft);text-decoration:none}.oxidation-tile strong{display:block;font-size:26px;font-weight:500}.oxidation-tile span{font-size:12px;color:var(--muted)}
.passport{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:25px 29px;margin-bottom:23px;position:relative;overflow:hidden}.passport::after{content:"";position:absolute;right:0;top:0;bottom:0;width:6px;background:#86a477}.passport-main{display:flex;justify-content:space-between;gap:20px;align-items:start}.passport .eyebrow{font-size:10px}.passport h1{font-size:44px;font-weight:500;margin:5px 0 12px;letter-spacing:-1px;overflow-wrap:anywhere}.passport-count{text-align:right;font-size:12px;color:var(--muted);padding-top:13px;white-space:nowrap}.passport-count strong{display:block;color:var(--ink);font-size:32px;line-height:1.4}.class-tags{display:flex;flex-wrap:wrap;gap:6px}.class-tag{font-size:11px;padding:4px 9px;border-radius:4px;background:#f0f4ec;color:#56704e;border:1px solid #e2e9da}.oxidation-line{margin-top:20px;padding-top:17px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:7px 15px;align-items:center}.oxidation-line .small{margin-right:3px}.state-pair{font-size:12px;background:#f8f9f5;padding:3px 7px;border-radius:4px}.aliases{font-size:12px;color:var(--muted);margin-top:10px}.substance-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:0 0 15px}.order-picker{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:11px;color:var(--muted)}.order-picker select{font-size:11px;color:var(--ink);background:transparent;border:0;padding:5px 20px 5px 0;max-width:100%}.selection-panel{background:#edf2e8;border:1px solid #dce6d4;border-radius:10px;padding:17px 20px;margin-bottom:21px}.selector-row{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:0 0 11px}.selector-row:last-child{margin-bottom:0}.selector-label{width:105px;color:#6a7d60;font-size:12px;flex-shrink:0}.selector-row .button{background:#f9fbf6;border-color:#d8e1d1;padding:8px 13px;gap:10px}.selector-row .button.selected{background:var(--accent);color:white;border-color:var(--accent)}.selector-row .button span{opacity:.72;font-size:11px}.context-note{background:#f4f5e9;border:1px solid #e3e6cc;border-radius:7px;padding:10px 13px;font-size:12px;color:#67723e;margin-bottom:18px}.connections{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:8px;margin-bottom:15px}.connection{background:white;border:1px solid var(--line);border-radius:8px;padding:12px;text-align:left;min-width:0;overflow-wrap:anywhere}.connection strong{display:block;font-weight:500;font-size:17px;line-height:1.7}.connection span{font-size:10px;color:var(--muted)}.connection[aria-pressed=true]{background:#e6efdf;border-color:#91ad80}.connection:hover{background:#f0f5ec}
.reaction-list{display:grid;gap:12px}.reaction-card{background:var(--paper);border:1px solid var(--line);border-radius:9px;padding:19px 21px;min-width:0}.reaction-top{display:flex;justify-content:space-between;align-items:start;gap:15px;margin-bottom:8px}.tag-row{display:flex;align-items:center;flex-wrap:wrap;gap:6px}.tag{display:inline-flex;align-items:center;font-size:10px;letter-spacing:.2px;padding:3px 7px;border-radius:4px;background:#e9f2e6;color:#4c7040;white-space:nowrap}.tag.neutral{background:#f0f2ed;color:#798373}.tag.alternative{background:#f6f0da;color:#8a742b}.reaction-open{font-size:11px;white-space:nowrap;color:#738c69}.equation{font-size:18px;display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 7px;line-height:2.05;margin:4px 0 8px;overflow-wrap:anywhere}.term{display:inline-flex;align-items:baseline;white-space:nowrap}.formula-link{border-bottom:1px solid #d4dfca;color:#2f624c}.formula-link:hover{text-decoration:none;border-color:var(--accent);background:#f0f5ec}.term.highlight .formula-link{background:#e5eedb;border-color:#adc59a;border-radius:2px}.equation .operator{color:#8a9b81}.reaction-meta{display:flex;flex-wrap:wrap;gap:6px 18px;color:var(--muted);font-size:11px}.reaction-meta a{color:#738c69}.reaction-card details{margin-top:9px}.reaction-card summary{font-size:11px;color:#66805a;cursor:pointer;padding:4px 0;width:fit-content}.reaction-extra{padding:11px 13px;background:#f5f7f1;border-radius:6px;font-size:12px;margin-top:6px;display:grid;gap:8px}.role-links{display:flex;flex-wrap:wrap;gap:7px 18px}.source-link{font-size:11px;display:block;color:#708164}.source-block{padding:13px 0;border-top:1px solid var(--line)}.source-original{font-family:inherit;color:#61705a;font-size:13px;margin-top:7px;white-space:pre-wrap;overflow-wrap:anywhere}.source-block:first-child{border-top:0}.warning-note{font-size:12px;color:var(--amber);background:var(--warm);padding:12px 14px;border-radius:7px;margin:14px 0}.detail-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:20px;align-items:start;margin-top:20px}.detail-grid .panel{padding:21px}.detail-grid h2{font-size:17px;margin-bottom:14px}.changes{display:grid;gap:9px}.change-row{padding:10px 12px;background:#f4f6ef;border-radius:5px;display:flex;justify-content:space-between;gap:13px;flex-wrap:wrap;font-size:13px}.change-row span{font-size:11px;color:var(--muted)}.alternative-list{display:grid;gap:10px}.alternative-list .reaction-card{background:#fcfbf6}.role-table{width:100%;border-collapse:collapse;background:white;border:1px solid var(--line);border-radius:9px}.role-table th{text-align:left;font-weight:500;font-size:11px;letter-spacing:.2px;color:var(--muted);background:#f0f4eb;padding:13px 20px}.role-table td{padding:13px 20px;border-top:1px solid #edf0e8;font-size:14px}.role-table th:last-child,.role-table td:last-child{text-align:right}.role-table .role-formula{font-size:19px}.role-table .role-count{display:inline-flex;align-items:center;gap:18px;font-size:13px}.role-table .role-count span{color:#a0af97}.source-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.source-card{display:block;color:var(--ink)}.source-card:hover{border-color:#a6bc9e;text-decoration:none}.source-card h2{font-size:17px}.source-card p{font-size:12px;color:var(--muted);margin-top:10px}.source-card .source-card-bottom{display:flex;justify-content:space-between;gap:10px;color:var(--accent);font-size:12px;margin-top:20px}.site-footer{border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;margin-top:42px;padding:21px 0 25px;font-size:10px;color:#82907a}.site-footer a{color:#738766}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);padding:11px 20px;border-radius:8px;background:#254d3b;color:white;box-shadow:0 5px 24px #203e3424;font-size:13px;z-index:50;max-width:90vw;text-align:center}.copy-fallback{font-size:12px;width:100%;padding:10px;border:1px solid var(--line);border-radius:6px;margin-top:10px}
@media(min-width:1000px){body.home .search-shell{margin-top:5px}body.home .intro{margin-top:31px}}
@media(max-width:1000px){.header-inner{padding:0 24px;gap:22px}.page-wrap{padding:25px 24px 0}.top-nav{gap:20px}.prototype-label{display:none}.home-columns,.home-lower{grid-template-columns:1fr 1fr;gap:16px}.panel{padding:20px}.elements-grid{grid-template-columns:repeat(6,minmax(0,1fr))}.substance-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.connections{grid-template-columns:repeat(4,minmax(0,1fr))}.element-page-grid{grid-template-columns:repeat(7,minmax(0,1fr))}h1{font-size:32px}.intro-stats{gap:20px}.intro-stats strong{font-size:25px}}
@media(max-width:750px){.header-inner{flex-wrap:wrap;padding:17px 20px 0;gap:12px;min-height:auto}.brand{font-size:17px}.brand-mark{width:34px;height:34px;font-size:21px}.brand-sub{font-size:9px}.top-nav{width:100%;order:3;gap:26px;margin-left:0;height:42px}.top-nav a{font-size:12px}.page-wrap{padding:20px 20px 0}.search-shell{margin-bottom:24px}.intro{align-items:start;gap:20px}.intro h1{font-size:29px}.intro p{font-size:12px;margin-top:9px}.intro-stats{gap:16px}.intro-stats strong{font-size:23px}.intro-stats div{font-size:10px}.home-columns{grid-template-columns:1fr}.home-lower{grid-template-columns:1fr 1fr;margin-top:16px}.elements-grid{grid-template-columns:repeat(9,minmax(0,1fr))}.home-lower .panel{padding:18px}.entry-grid{gap:6px}.entry{padding:12px 9px}.entry .entry-label{font-size:11px}.entry strong{font-size:22px}.panel-heading{margin-bottom:13px}.substance-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.tree{grid-template-columns:1fr}.detail-grid{grid-template-columns:1fr}.connections{grid-template-columns:repeat(3,minmax(0,1fr))}.passport{padding:20px 23px}.source-cards{grid-template-columns:1fr}.page-heading h1{font-size:26px}.equation{font-size:17px}.selector-label{width:85px}.substance-toolbar{align-items:start;flex-wrap:wrap;gap:9px}}
@media(max-width:500px){.header-inner{padding-left:17px;padding-right:17px}.page-wrap{padding:18px 16px 0}.top-nav{justify-content:space-between;gap:14px}.intro{flex-wrap:wrap;margin-bottom:23px;gap:17px}.intro h1{font-size:30px}.intro-stats{gap:28px}.intro-stats div{display:flex;align-items:baseline;gap:7px;font-size:11px}.intro-stats strong{font-size:23px}.intro p{font-size:13px;max-width:290px}.eyebrow{font-size:9px}.home-lower{grid-template-columns:1fr}.panel{padding:19px}.panel h2{font-size:19px}.elements-grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:6px}.element-tile{min-height:59px}.element-tile span{font-size:8px}.element-tile strong{font-size:19px}.class-row{padding:12px 0}.class-row>a:first-child{font-size:13px}.class-marker{width:6px;height:6px}.home-lower h2{font-size:18px}.entry{padding:14px}.entry .entry-label{font-size:12px}.entry strong{font-size:28px}.entry-grid.roles .entry{display:grid;grid-template-columns:1fr auto;align-items:center}.entry-grid.roles .entry-arrow{grid-column:2}.entry-grid.roles .entry strong{grid-column:2;grid-row:1}.entry-grid.roles .entry .entry-arrow{display:none}.entry-grid.roles{grid-template-columns:1fr}.search-icon{display:none}#global-search{padding-left:12px;gap:8px}#query{font-size:13px}#global-search .button{padding:8px 12px;min-height:39px;font-size:12px;gap:8px}.substance-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.substance-tile{min-height:74px;padding:13px 12px}.substance-tile .formula{font-size:20px}.substance-tile .tile-arrow{font-size:14px}.element-page-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.element-page-grid .element-tile{min-height:92px}.element-page-grid .element-tile span{font-size:10px}.element-page-grid .element-tile strong{font-size:25px}.breadcrumb{font-size:11px;gap:6px;margin-bottom:18px}.page-heading{flex-wrap:wrap;gap:7px;margin-bottom:20px}.page-heading h1{font-size:25px;letter-spacing:-.7px}.page-count{margin-top:0}.page-description{font-size:12px}.passport{padding:18px 18px 16px}.passport h1{font-size:36px}.passport-count strong{font-size:28px}.passport-count{font-size:10px}.class-tag{font-size:10px}.oxidation-line{gap:7px 9px;margin-top:15px;padding-top:13px}.oxidation-line>.small{width:100%;font-size:11px}.selection-panel{padding:14px 12px}.selector-label{width:100%;font-size:11px;margin-bottom:1px}.selector-row{gap:6px;margin-bottom:15px}.selector-row .button{padding:7px 9px;font-size:11px;gap:6px;min-height:36px}.selector-row .button span{font-size:10px}.order-picker{font-size:10px}.connections{grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}.connection{padding:10px 12px}.connection strong{font-size:17px}.reaction-card{padding:15px 14px}.reaction-open{font-size:10px}.equation{font-size:16px;gap:3px 6px}.tag{font-size:9px}.reaction-meta{font-size:10px;gap:5px 12px}.reaction-extra{font-size:11px;padding:10px}.source-link{font-size:10px}.section-heading{align-items:baseline;gap:10px}.section-heading h2{font-size:18px}.section-heading .button{font-size:11px}.role-table td,.role-table th{padding:12px 13px}.role-table .role-formula{font-size:18px}.role-table .role-count{gap:9px}.role-table th{font-size:10px}.filter-bar{gap:7px}.filter-bar select{max-width:240px}.source-block{padding:12px 0}.detail-grid .panel{padding:17px}.source-original{font-size:12px}.site-footer{font-size:9px;gap:8px;margin-top:30px}.site-footer span:first-child{width:100%}.oxidation-tile{min-width:92px;padding:14px}}
@media(pointer:coarse){input,select{font-size:16px!important}.button{min-height:44px}.selector-row .button{min-height:44px}.formula-link{padding:5px 0}.term{min-height:38px}.top-nav a{min-height:44px}.source-link{padding:6px 0}}
.periodic-panel{padding-bottom:21px}.periodic-legend{display:flex;flex-wrap:wrap;gap:8px 24px;margin:0 0 18px;color:var(--muted);font-size:11px}.periodic-legend>span{display:inline-flex;align-items:center;gap:8px}.pt-swatch{width:12px;height:12px;border-radius:3px;border:1px solid #dfe5da;background:#f3f5f0}.pt-swatch.available{border-color:#97b086;background:#e4eedc}.periodic-scroll{overflow-x:auto;overscroll-behavior-x:contain;padding:1px 0 10px;scrollbar-color:#b5c4ac #f0f3ec;scrollbar-width:thin}.periodic-layout{min-width:850px}.periodic-table,.pt-detached{width:100%;table-layout:fixed;border-collapse:separate;border-spacing:3px}.pt-period-column{width:42px}.periodic-table th{font-size:12px;color:#677b5c;font-weight:500;padding:4px 0}.periodic-table thead th{border-bottom:1px solid #dce5d5}.periodic-table .pt-groups-title{font-size:10px;letter-spacing:2px;text-transform:uppercase;padding:0 0 6px}.periodic-table .pt-period-title{font-size:9px;color:#7c8e72;border:0;vertical-align:bottom;padding-bottom:8px}.periodic-table .pt-period{background:#f1f5ec;border-radius:4px;font-size:17px;color:#718366}.pt-element{padding:0;background:#f4f6f1;border:1px solid #e2e7dc;border-radius:5px;vertical-align:middle}.pt-cell{min-height:56px;position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:13px 2px 5px;color:inherit}.pt-number{position:absolute;left:5px;top:3px;font-size:9px;line-height:1;color:#99a48f}.pt-symbol{font-size:21px;font-weight:500;line-height:1.2}.pt-symbol sup{font-size:9px;margin-left:2px}.pt-name{font-size:9px;line-height:1.5;margin-top:2px;overflow-wrap:anywhere;text-align:center;max-width:100%}.pt-inactive{color:#9aa48f;background:#f6f7f3;border-color:#e7ebe1}.pt-inactive .pt-number{color:#a6b19c}.pt-active{background:#e6efde;border-color:#a2bb8c}.pt-active .pt-cell{color:#2a563d}.pt-active .pt-number{color:#6d865c}.pt-active:hover{background:#d5e5c7;border-color:#789963}.pt-active a:hover{text-decoration:none}.pt-empty{border:0;background:transparent}.pt-hydrogen-note{text-align:center;color:#a9b59e;font-size:18px}.pt-period-start:not(:first-child) .pt-element{border-top-color:#d3ddc9}.pt-period-start:not(:first-child) .pt-active{border-top-color:#a2bb8c}.pt-detached-title{font-size:10px;color:#8c9b80;margin:15px 0 3px 47px}.pt-detached{padding-left:43px}.pt-detached .pt-cell{min-height:48px;padding-top:12px}.pt-detached .pt-symbol{font-size:17px}.pt-detached .pt-name{font-size:8px}.periodic-mobile-hint{display:none;color:#819474;font-size:11px;margin-bottom:11px}.trainer-panel{margin-top:22px;display:flex;justify-content:space-between;align-items:center;gap:18px;min-height:98px}.trainer-panel h2{font-size:19px}.trainer-link,.trainer-link:hover{background:#f0f3ec;color:#8f9d84;border-color:#e0e6d8;text-decoration:none;cursor:not-allowed}.trainer-link span{color:#acb8a2}
@media(max-width:1000px){.periodic-mobile-hint{display:block}.periodic-panel{padding-bottom:12px}}
@media(max-width:500px){.periodic-panel{padding:18px 12px 10px}.periodic-panel .panel-heading{padding:0 5px}.periodic-panel .panel-label{font-size:11px}.periodic-legend{font-size:10px;gap:8px 16px;padding:0 5px}.periodic-mobile-hint{font-size:10px;padding:0 5px}.trainer-panel{margin-top:16px;gap:14px;min-height:91px}.trainer-panel h2{font-size:18px}.trainer-link{font-size:11px;padding:8px 11px;gap:10px}}
.pt-cell{padding-left:8px;padding-right:8px}.pt-align-left .pt-symbol{align-self:flex-start;text-align:left}.pt-align-right .pt-symbol{align-self:flex-end;text-align:right}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
.substance-names{font-size:15px;line-height:1.65;font-weight:400;margin:0 0 18px;max-width:720px;overflow-wrap:anywhere}.trivial-names{margin-top:5px}.optional-name{color:#7a817d;font-weight:400}.name-separator{color:#a2aaa4}.tile-name{display:block;font-size:12px;line-height:1.5;margin-top:5px;overflow-wrap:anywhere}.suggestion-substance{display:flex;align-items:baseline;gap:16px;min-width:0}.suggestion-formula{flex-shrink:0;font-size:17px}.suggestion-name{font-size:13px;overflow-wrap:anywhere}.suggestions a>small{flex-shrink:0}.search-substances{margin:24px 0}.search-substances .substance-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.search-reactions-title{margin-bottom:16px}.student-condition{margin-top:12px;font-size:13px;color:var(--accent)}@media(max-width:600px){.suggestion-substance{display:block}.suggestion-name{display:block;font-size:12px;margin-top:3px}.suggestions a{padding:9px 6px}.suggestions a>small{font-size:10px}.search-substances .substance-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.substance-names{font-size:14px}.substance-tile{padding:12px}.passport-count{white-space:normal;max-width:85px}}
.periodic-stage{position:relative}.periodic-mobile-controls{display:none}.periodic-preview-open{position:absolute;inset:0;width:100%;height:100%;padding:0;border:0;border-radius:6px;background:transparent;cursor:zoom-in}.periodic-preview-open:focus-visible{outline-offset:3px}
@media(max-width:750px){.periodic-mobile-controls{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:13px}.periodic-mobile-controls .periodic-mobile-hint{display:block;margin:0;padding:0;font-size:11px;max-width:210px;line-height:1.5}.periodic-zoom-toggle{flex-shrink:0;color:var(--accent);font-size:11px;min-height:40px}.is-compact .periodic-scroll{overflow:hidden;padding:0}.is-compact .periodic-layout{min-width:0}.is-compact .periodic-table,.is-compact .pt-detached{border-spacing:1px}.is-compact .pt-period-column{width:17px}.is-compact .periodic-table th{font-size:8px;padding:3px 0}.is-compact .periodic-table .pt-groups-title{font-size:7px;letter-spacing:1px;padding-bottom:3px}.is-compact .periodic-table .pt-period-title{font-size:5px;padding-bottom:5px}.is-compact .periodic-table .pt-period{font-size:10px}.is-compact .pt-element{border-radius:3px}.is-compact .pt-cell{min-height:25px;padding:7px 3px 2px}.is-compact .pt-symbol{font-size:12px;line-height:1.1}.is-compact .pt-symbol sup{font-size:5px;margin-left:0}.is-compact .pt-number{font-size:5px;top:2px;left:3px}.is-compact .pt-name{display:none}.is-compact .pt-hydrogen-note{font-size:10px}.is-compact .pt-detached-title{font-size:7px;margin:8px 0 2px 19px}.is-compact .pt-detached{padding-left:17px}.is-compact .pt-detached .pt-cell{min-height:22px;padding:7px 2px 2px}.is-compact .pt-detached .pt-symbol{font-size:9px}.is-compact .pt-detached .pt-number{left:2px}.is-compact .pt-active:hover{background:#e6efde;border-color:#a2bb8c}}
@media(min-width:751px) and (max-width:1000px){.periodic-mobile-controls{display:block}.periodic-mobile-controls .periodic-mobile-hint{display:block}}