/* Subject gateway & separate Physics lab, using OmniCalc's existing design tokens. */
[hidden]{display:none!important}.subject-mini{display:flex;gap:5px;margin:1px 0 18px}.subject-mini button{border:1px solid var(--line);border-radius:8px;background:var(--panel-soft);color:var(--secondary);padding:10px 8px;flex:1;font-size:11px;font-weight:700}.subject-mini button:hover{color:var(--accent);border-color:var(--accent)}
#omni-additional{min-height:100vh;background:var(--bg);color:var(--text)}.omni-gateway{max-width:1170px;margin:0 auto;padding:30px clamp(16px,4vw,55px) 50px;min-height:100vh;display:flex;flex-direction:column}.gateway-top{display:flex;align-items:center;justify-content:space-between}.gateway-brand,.phy-brand{display:flex;align-items:center;gap:12px;font-size:23px;font-weight:800;letter-spacing:-.9px}.gateway-brand small,.phy-brand small{display:block;color:var(--muted);font-size:9px;letter-spacing:1.5px;margin-top:3px}.gateway-logo{background:var(--hero);color:#d8f7e3;width:46px;height:46px;border-radius:13px;display:grid;place-items:center;font:29px Georgia}.gateway-lang select,#phy-lang{border:1px solid var(--line);background:var(--panel);border-radius:10px;padding:10px 13px;color:var(--text);font-size:12px;font-weight:750}.gateway-intro{text-align:center;margin:clamp(50px,8vw,118px) auto 37px}.gateway-eyebrow,.phy-eyebrow{color:var(--accent);letter-spacing:2px;font-size:10px;font-weight:850}.gateway-intro h1{font-size:clamp(36px,5vw,64px);letter-spacing:-2px;margin:15px 0}.gateway-intro p{color:var(--muted);font-size:15px;line-height:1.9}.gateway-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.gateway-card{display:flex;flex-direction:column;text-align:left;position:relative;overflow:hidden;min-height:330px;padding:32px;border:1px solid var(--line);background:var(--panel);border-radius:20px;color:var(--text);transition:transform .16s,border-color .16s,box-shadow .16s}.gateway-card:hover{transform:translateY(-3px);border-color:#77bb95;box-shadow:0 18px 50px #173d271c}.gateway-icon{width:53px;height:53px;background:var(--accent-soft);color:var(--accent);border-radius:15px;display:grid;place-items:center;font:32px Georgia}.gateway-overline{font-size:9px;letter-spacing:1.6px;color:var(--accent);font-weight:850;margin-top:27px}.gateway-card h2{font-size:32px;margin:10px 0;letter-spacing:-1px}.gateway-card p{font-size:13px;line-height:1.7;color:var(--muted);max-width:340px;margin:0}.gateway-arrow{font-size:12px;font-weight:850;color:var(--accent);margin-top:auto;padding-top:28px}.gateway-decor{position:absolute;top:50px;right:24px;font:italic 24px Georgia;color:var(--accent);opacity:.21;transform:rotate(-9deg);pointer-events:none}.gateway-physics{background:var(--hero);color:var(--hero-text);border-color:var(--hero)}.gateway-physics .gateway-icon{color:#c4ead5;background:#ffffff20}.gateway-physics .gateway-overline,.gateway-physics .gateway-arrow{color:#c6ebd7}.gateway-physics p{color:#c6d8cf}.gateway-physics .gateway-decor{color:#b0eacb}.gateway-foot{text-align:center;color:var(--muted);font-size:11px;margin-top:auto;padding-top:42px}
.phy-layout{min-height:100vh;display:flex}.phy-sidebar{width:259px;flex-shrink:0;position:sticky;top:0;height:100dvh;overflow-y:auto;background:var(--sidebar);border-right:1px solid var(--line);padding:25px 14px;display:flex;flex-direction:column}.phy-sidebar-head{margin:0 4px 27px}.phy-brand{font-size:19px}.phy-brand>span{width:39px;height:39px;border-radius:11px;display:grid;place-items:center;background:var(--hero);color:#e0f7e9;font-size:22px}.phy-menu-label{font-size:10px;letter-spacing:1.3px;font-weight:850;color:var(--muted);margin:24px 11px 10px}.phy-sidebar .phy-nav-link{display:flex;gap:11px;align-items:center;padding:11px;border:0;border-radius:9px;background:transparent;color:var(--secondary);text-align:left;font-size:12px;font-weight:650;width:100%;line-height:1.4}.phy-sidebar .phy-nav-link:hover{background:var(--panel-soft)}.phy-sidebar .phy-nav-active{background:var(--accent-soft);color:var(--accent)}.phy-topic-nav i{font:19px Georgia;width:22px;display:inline-block;text-align:center;flex-shrink:0;font-style:normal}.phy-sidebar-bottom{font-size:10px;color:var(--muted);border-top:1px solid var(--line);padding:24px 10px 10px;margin-top:auto;line-height:1.7}.phy-green-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#53bc78;margin-right:5px}
.phy-main{min-width:0;flex:1}.phy-topbar{height:82px;padding:0 clamp(18px,3vw,44px);display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:10px;font-weight:850;letter-spacing:1.3px;color:var(--muted)}.phy-topright{display:flex;align-items:center;gap:10px}.phy-subject-btn{border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--text);font-size:20px;padding:5px 12px}.phy-mobile-topics{display:none}.phy-content{max-width:1470px;margin:0 auto;padding:15px clamp(18px,3vw,44px) 50px}.phy-content h1{font-size:clamp(32px,3.5vw,47px);letter-spacing:-1.7px;margin:14px 0 10px}.phy-subtitle{font-size:13px;line-height:1.8;color:var(--muted);margin:0 0 27px}.phy-topic-wrap{border:1px solid var(--line);border-radius:17px;background:var(--panel);padding:22px 23px;margin-bottom:18px}.phy-topic-heading{display:flex;gap:15px;align-items:center}.phy-feature-icon{height:45px;width:45px;border-radius:13px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);font:25px Georgia;flex-shrink:0}.phy-topic-heading h2{font-size:20px;letter-spacing:-.6px;margin:0 0 5px}.phy-topic-heading p{color:var(--muted);font-size:12px;line-height:1.5;margin:0}.phy-picker-label{font-size:10px;color:var(--muted);font-weight:750;display:block;margin-top:20px;margin-bottom:7px}.phy-topic-select{width:100%;max-width:460px;border:1px solid var(--line);background:var(--panel-soft);color:var(--text);padding:11px;border-radius:9px;font-size:13px}.phy-assumption{margin-top:17px;background:var(--panel-soft);border:1px solid var(--line);padding:13px 16px;border-radius:10px;display:flex;gap:12px;font-size:11px;color:var(--secondary);line-height:1.6}.phy-assumption>span{font-size:16px;color:var(--accent)}.phy-assumption strong{font-size:11px;color:var(--text)}.phy-assumption p{margin:3px 0 0}
.phy-workgrid{display:grid;grid-template-columns:minmax(360px,1fr) minmax(320px,.96fr);gap:16px;align-items:start}.phy-input-panel,.phy-results-panel{min-width:0;background:var(--panel);border:1px solid var(--line);border-radius:16px;overflow:hidden}.phy-panel-title{padding:19px 22px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;align-items:center;font-size:12px}.phy-panel-title span{color:var(--muted);font-size:9px;letter-spacing:1.5px}.phy-panel-inner{padding:20px}.phy-tip{margin:0 0 21px;font-size:11px;color:var(--muted);line-height:1.6}.phy-given-row{display:grid;grid-template-columns:minmax(110px,1.7fr) minmax(85px,1fr) minmax(75px,1fr) 24px;gap:7px;align-items:end;margin-bottom:13px}.phy-given-row label{display:block;min-width:0}.phy-lbl{display:block;color:var(--secondary);font-size:10px;font-weight:750;margin-bottom:7px}.phy-given-row select,.phy-given-row input{display:block;width:100%;min-width:0;height:43px;border-radius:8px;border:1px solid var(--line);background:var(--panel-soft);color:var(--text);padding:0 9px;font-size:12px}.phy-delete{height:43px;border:0;background:transparent;color:var(--muted);font-size:20px}.phy-delete:hover{color:#c35b5b}.phy-add{width:100%;border:1px dashed #a7c9b5;border-radius:9px;background:var(--accent-soft);padding:13px;color:var(--accent);font-size:12px;font-weight:800;margin-top:9px}.phy-add:disabled{opacity:.35;cursor:default}.phy-no-rows{border:1px dashed var(--line);padding:32px 15px;text-align:center;color:var(--muted);border-radius:10px;font-size:12px}.phy-actions{margin-top:20px;display:flex;gap:10px;flex-wrap:wrap}.phy-actions button{flex:1;padding:12px;border-radius:9px;font-size:11px;font-weight:750}.phy-example{background:var(--accent);color:var(--bg);border:1px solid var(--accent)}.phy-reset{background:var(--panel);color:var(--muted);border:1px solid var(--line)}.phy-examples-note{border-top:1px solid var(--line);padding-top:15px;margin-top:20px;font-size:11px;color:var(--muted)}
.phy-results-panel{padding-bottom:15px}.phy-result-top{display:flex;align-items:center;gap:14px;padding:18px 21px;border-bottom:1px solid var(--line)}.phy-result-icon{width:41px;height:41px;border-radius:11px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font:24px Georgia}.phy-result-top span{font-size:10px;color:var(--muted);font-weight:750;letter-spacing:.6px}.phy-result-top h2{font-size:17px;letter-spacing:-.4px;margin:6px 0 0}.phy-result-cards{padding:13px 16px}.phy-answer{border:1px solid var(--line);border-radius:10px;overflow:hidden;margin-bottom:10px}.phy-answer-btn{width:100%;border:0;background:var(--panel-soft);color:var(--text);display:flex;gap:9px;align-items:center;text-align:left;padding:15px}.phy-answer-btn>span:first-child{min-width:0;flex:1}.phy-answer-btn strong{display:block;font-size:12px}.phy-answer-btn small{display:block;color:var(--muted);font-size:10px;margin-top:4px}.phy-answer-number{font-size:16px;color:var(--accent);font-weight:800;white-space:nowrap}.phy-answer-number em{font-style:normal;font-size:10px;color:var(--secondary);margin-left:3px}.phy-expander{color:var(--muted)}.phy-details{padding:15px;border-top:1px solid var(--line);background:var(--panel)}.phy-calc-label{font-size:10px;color:var(--muted);font-weight:750}.phy-math-formula{font-size:19px;font-family:Georgia,serif;margin:10px 0;color:var(--accent)}.phy-subst{display:flex;flex-wrap:wrap;gap:8px}.phy-subst span{border:1px solid var(--line);border-radius:7px;background:var(--panel-soft);padding:7px;font-size:11px}.phy-noresults{text-align:center;padding:60px 20px;color:var(--muted)}.phy-noresults>span{font:44px Georgia;color:var(--accent)}.phy-noresults h3{font-size:16px;color:var(--text)}.phy-noresults p{font-size:12px;line-height:1.7}.phy-suggest{margin:15px 16px;padding:13px;background:var(--panel-soft);border-radius:10px;border:1px solid var(--line)}.phy-suggest strong{display:block;font-size:11px;margin-bottom:12px}.phy-suggest button{display:flex;justify-content:space-between;gap:8px;align-items:center;width:100%;background:var(--panel);color:var(--text);border:1px solid var(--line);border-radius:7px;font-size:11px;padding:9px;margin-top:7px;text-align:left}.phy-suggest button span{color:var(--accent);font-weight:700}.phy-alert{background:#fff4e3;color:#8f5e14;font-size:11px;padding:13px 18px;border-bottom:1px solid #efd9b8;line-height:1.5}.phy-bottom-note{font-size:11px;color:var(--muted);margin-top:19px;line-height:1.7}.phy-footer{text-align:center;font-size:10px;color:var(--muted);padding:25px;border-top:1px solid var(--line)}
@media(max-width:1190px){.phy-workgrid{grid-template-columns:1fr}.phy-sidebar{width:230px}.phy-given-row{grid-template-columns:minmax(125px,1.6fr) minmax(90px,1fr) minmax(75px,1fr) 24px}}
@media(max-width:730px){.gateway-grid{grid-template-columns:1fr}.gateway-intro{margin:58px auto 25px}.gateway-card{min-height:260px}.phy-layout{display:block}.phy-sidebar{position:fixed;top:0;bottom:0;left:-290px;height:100dvh;width:280px;z-index:110;box-shadow:0 8px 22px #0003;transition:left .2s}.phy-sidebar.phy-sidebar-open{left:0}.phy-mobile-topics{display:inline-block;border:0;background:var(--panel);color:var(--text);padding:8px 11px;border-radius:8px;font-size:20px}.phy-topbar{height:65px}.phy-content{padding-top:12px}.phy-topic-wrap{padding:17px}.phy-given-row{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(60px,.8fr) 20px;gap:5px}.phy-given-row select,.phy-given-row input{padding:0 5px;font-size:11px}.phy-panel-inner{padding:15px}.phy-answer-number{font-size:14px}}
@media(max-width:410px){.gateway-card{padding:25px}.gateway-intro h1{font-size:37px}.phy-quantity select{font-size:10px!important}.phy-content{padding-left:12px;padding-right:12px}.phy-given-row{grid-template-columns:minmax(0,1.5fr) minmax(55px,1fr) minmax(54px,.8fr) 18px;gap:4px}.phy-delete{padding:0}.phy-answer-btn{padding:11px}}

/* v12 physics quick-search for the expanded formula catalog */
.phy-topic-search{display:block;width:calc(100% - 28px);min-height:38px;border:1px solid #dbe5dc;border-radius:8px;margin:5px 14px 12px;padding:8px 11px;background:#ffffff;color:#204132;font:inherit;font-size:12px;outline-color:#3d8664}.phy-topic-nav [data-topic][hidden]{display:none!important}