:root{--bg:#f7f8f5;--white:#fff;--ink:#263b33;--muted:#849089;--green:#296653;--light:#e8f1e9;--line:#e5e9e2;--orange:#d38752;--yellow:#ebc86b;--shadow:0 5px 25px #233b3006}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:'DM Sans','Noto Sans SC',-apple-system,BlinkMacSystemFont,'PingFang SC',sans-serif;font-size:14px;line-height:1.6}button,input,select,textarea{font:inherit}button,a,input{touch-action:manipulation}button{cursor:pointer;color:inherit}button{border:0}a{color:var(--green);text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #bc8c32;outline-offset:4px}button:disabled{opacity:.5;cursor:not-allowed}svg{display:block}.icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.sidebar{width:230px;position:fixed;inset:0 auto 0 0;background:#fff;border-right:1px solid var(--line);padding:34px 19px 18px;display:flex;flex-direction:column;z-index:20}.brand{display:flex;align-items:center;gap:12px;margin-left:13px;color:var(--ink);font-size:29px;line-height:1.15;font-weight:800;letter-spacing:3px}.brand small{display:block;font-size:9px;letter-spacing:2px;font-weight:500;margin-top:8px}.brand-mark{width:42px;height:48px;background:var(--green);color:#f2e9bc;border-radius:13px;font-size:39px;line-height:44px;letter-spacing:0;position:relative;text-align:center;font-weight:400}.brand-mark i{position:absolute;width:7px;height:7px;border-radius:50%;background:#f2e9bc;left:18px;top:27px}.workspace-label{color:#9ca69e;font-size:11px;letter-spacing:2px;margin:37px 13px 14px}.nav-item{width:100%;background:none;display:flex;align-items:center;gap:12px;text-align:left;border-radius:9px;padding:13px 14px;margin-bottom:5px;font-size:13px;color:#707e75}.nav-item.active{background:#eaf2e9;color:var(--green);font-weight:600}.nav-item:hover{background:#f0f4ed}.nav-count{margin-left:auto;font-size:11px;background:#d8e7d6;border-radius:5px;padding:0 5px}.tiny-badge{font-size:8px;background:#f5ecda;color:#ab8a4b;padding:1px 4px;border-radius:3px;margin-left:auto;letter-spacing:.5px}.nav-rule{height:1px;background:var(--line);margin:22px 13px}.sidebar-label{font-size:10px;letter-spacing:1px;color:#a0a8a2;margin:0 13px 13px}.side-bottom{margin-top:auto;padding-top:25px}.pro-note{background:#f5f5ed;border:1px solid #ebecdf;border-radius:10px;padding:15px 13px}.little-star{color:#a28c52;font-size:22px}.pro-note h3{font-size:12px;margin:5px 0}.pro-note p{font-size:10px;color:#96998a;margin:7px 0 13px}.pro-note button{font-size:10px;background:#fff;border:1px solid #e3e5d8;border-radius:5px;width:100%;padding:8px;text-align:left}.pro-note button span{float:right}.help-link{display:flex;align-items:center;gap:9px;width:100%;background:none;color:#78847d;font-size:11px;margin:19px 0}.help-link .icon{width:16px}.help-link span:last-child{margin-left:auto}.version{border-top:1px solid var(--line);padding-top:16px;font-size:9px;color:#9ca69e;display:flex;justify-content:space-between}.app-shell{margin-left:230px}.topbar{height:83px;padding:0 42px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;background:#ffffffa6}.breadcrumbs{font-size:11px;color:#919b94}.breadcrumbs span{margin:0 15px;color:#bec5bc}.breadcrumbs b{font-weight:500;color:#5c6d61}.top-actions{display:flex;gap:20px;align-items:center}.text-button{background:none;display:flex;gap:8px;align-items:center;font-size:11px}.text-button .icon{width:17px}.top-divider{height:20px;width:1px;background:var(--line)}.profile{display:flex;align-items:center;gap:9px;background:none;font-size:11px}.avatar{background:#e5eadf;border:3px solid #fff;box-shadow:0 0 0 1px #dce2d7;border-radius:50%;width:31px;height:31px;display:grid;place-items:center;font-size:12px}.mobile-menu{display:none!important}main{padding:32px 42px 20px;max-width:1570px;margin:auto}.welcome-row{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:24px}.eyebrow{font-size:10px;letter-spacing:2px;color:#7c8d7e;font-weight:600}.welcome-row h1{font-size:24px;font-weight:600;letter-spacing:1px;margin:6px 0}.welcome-row p{font-size:12px;color:var(--muted);margin:3px 0}.date-label{font-size:11px;color:#8a968d;display:flex;align-items:center;gap:7px;padding-bottom:4px}.date-label .icon{width:14px}.hero{min-height:300px;background:#e9eee3;border:1px solid #e1e8d9;border-radius:15px;display:grid;grid-template-columns:1.05fr 1fr;overflow:hidden;position:relative}.hero-copy{padding:29px 0 28px 34px;z-index:1}.hero-pill{display:inline-flex;align-items:center;gap:7px;font-size:10px;color:#597954;border:1px solid #cbd9c4;border-radius:20px;padding:4px 10px;background:#f4f7eea1}.hero-pill i{width:5px;height:5px;border-radius:50%;background:#71946a}.hero h2{font-size:36px;line-height:1.4;letter-spacing:1.5px;margin:15px 0 11px;font-weight:700}.hero h2 span{color:var(--green)}.hero p{font-size:11px;line-height:1.9;color:#7c8975;max-width:350px;margin:0 0 20px}.button{display:inline-flex;justify-content:center;align-items:center;gap:8px;border-radius:7px;padding:10px 18px;min-height:40px;font-size:12px;font-weight:500;transition:transform .16s,background .16s}.button:hover{transform:translateY(-1px)}.button.primary{background:var(--green);color:white}.button.primary:hover{background:#215341}.button.secondary{background:white;border:1px solid var(--line)}.button.ghost{background:transparent;color:#72816f}.button .icon{width:16px;height:16px}.hero-buttons{display:flex;gap:8px}.hero-art{position:relative;min-width:0;display:flex;align-items:center;justify-content:center}.hero-art>svg{width:100%;height:100%;max-height:310px;overflow:visible}.art-note{position:absolute;right:24px;bottom:17px;font-size:9px;letter-spacing:1px;color:#8b9b81}.hero-number{position:absolute;right:22px;top:20px;color:#9daa92;font-size:9px;letter-spacing:2px}.quick-path{display:grid;grid-template-columns:repeat(3,1fr);gap:13px;margin:19px 0 32px}.path-item{background:#fff;border:1px solid var(--line);border-radius:10px;display:flex;align-items:center;padding:15px 15px;gap:12px;text-align:left;box-shadow:var(--shadow)}.path-item:hover{border-color:#aabd9f}.path-icon{width:35px;height:35px;border-radius:9px;display:grid;place-items:center;background:#eff3e9;color:#6c8b65}.path-item:nth-child(2) .path-icon{background:#fbf1e4;color:#b99260}.path-item:nth-child(3) .path-icon{background:#edf0f7;color:#7d8ea6}.path-item strong{display:block;font-size:12px;font-weight:500}.path-item small{font-size:10px;color:#98a093}.path-item>span:last-child{margin-left:auto;color:#9eaa98}.section-heading{display:flex;align-items:center;justify-content:space-between;margin:0 0 17px}.section-heading h2{font-size:19px;font-weight:600;letter-spacing:.5px;margin:0}.section-heading h2 small{font-size:10px;letter-spacing:1px;color:#a3ada2;margin-left:12px;font-weight:400}.segmented{display:flex;background:#eef1ea;border-radius:6px;padding:3px;gap:2px}.segmented button{background:transparent;color:#8c9888;padding:6px 12px;border-radius:4px;font-size:10px}.segmented button.active{background:#fff;color:#365d42;box-shadow:0 1px 4px #00000008}.filter-row{display:flex;gap:8px;margin:0 0 18px;flex-wrap:wrap;align-items:center}.chip{border:1px solid #e2e7dc;background:#fff;border-radius:6px;padding:5px 12px;font-size:10px;color:#939d8b}.chip.active{color:#48673c;border-color:#cbd6bd;background:#eff3e7}.filter-row>small{margin-left:auto;font-size:10px;color:#a0a99b}.experiment-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:19px}.experiment-card{background:white;border:1px solid var(--line);border-radius:11px;overflow:hidden;transition:transform .2s,box-shadow .2s;min-width:0}.experiment-card:hover{transform:translateY(-3px);box-shadow:0 10px 24px #334e3910}.card-visual{height:158px;position:relative;overflow:hidden;display:grid;place-items:center}.card-visual svg{width:100%;height:100%}.card-label{position:absolute;left:13px;top:12px;font-size:9px;letter-spacing:.5px;background:#ffffffb8;border:1px solid #ffffff80;border-radius:4px;padding:3px 7px;color:#698368}.card-number{position:absolute;right:13px;top:13px;color:#93a48d;font-size:10px;letter-spacing:1px}.card-body{padding:16px 17px 13px}.card-body h3{margin:0 0 6px;font-size:15px;font-weight:600;letter-spacing:.2px}.card-body p{font-size:10px;color:#929c8b;min-height:32px;line-height:1.8;margin:0 0 11px}.card-tags{display:flex;gap:6px;align-items:center}.card-tags span{font-size:9px;background:#f1f4ed;color:#87947d;padding:2px 6px;border-radius:3px}.card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px;padding-top:11px;border-top:1px solid #eff1eb}.card-foot small{display:flex;gap:5px;align-items:center;color:#a2aa9c;font-size:9px}.card-foot .icon{width:11px;height:11px}.card-foot button{background:none;color:var(--green);font-size:10px;padding:4px 0;display:flex;gap:8px;align-items:center}.coming .card-visual{opacity:.7}.coming .card-foot button{color:#8a9584}.bottom-banner{display:flex;align-items:center;gap:15px;background:#f0f2e9;border:1px solid #e5e9db;border-radius:10px;padding:18px 23px;margin:27px 0 3px}.bottom-banner .banner-icon{color:#879a70;flex-shrink:0}.bottom-banner strong{font-size:12px;font-weight:500}.bottom-banner p{font-size:10px;color:#97a08d;margin:4px 0 0}.bottom-banner button{margin-left:auto;white-space:nowrap}footer{font-size:9px;color:#a3aca0;padding:20px 42px 28px;display:flex;justify-content:space-between;gap:12px;max-width:1570px;margin:auto}footer button{font-size:9px;background:none;color:#8b9884;margin-left:14px}.icon-button{display:inline-grid;place-items:center;width:35px;height:35px;border-radius:7px;background:none}.icon-button:hover{background:#eaf0e6}.skip-link{position:fixed;top:-100px;left:10px;z-index:100;background:#fff;padding:12px}.skip-link:focus{top:10px}dialog{border:1px solid var(--line);padding:32px;border-radius:16px;width:min(690px,92vw);max-height:88vh;box-shadow:0 30px 100px #12332330;color:var(--ink)}dialog::backdrop{background:#19332866;backdrop-filter:blur(4px)}.modal-close{position:absolute;right:14px;top:12px;font-size:25px}.modal-kicker{font-size:10px;letter-spacing:2px;color:#8a9b7c}dialog h2{font-size:24px;margin:9px 0 16px}dialog h3{font-size:15px;margin-top:23px}dialog p,dialog li{font-size:13px;color:#78856f;line-height:1.9}dialog ul,dialog ol{padding-left:20px}.modal-card{background:#f4f6ef;border:1px solid #e8ecdf;padding:15px;border-radius:9px;margin:12px 0}.modal-card p{margin:5px 0}.modal-card strong{font-size:13px}dialog .button{margin-top:8px}.source-link{display:block;border-top:1px solid var(--line);padding:15px 0}.source-link strong{display:block;font-size:13px}.source-link small{color:#87977a;display:block;margin-top:3px;font-size:11px}.toast{position:fixed;bottom:25px;left:calc(50% + 100px);transform:translateX(-50%) translateY(100px);background:#294f3e;color:#fff;padding:12px 22px;border-radius:9px;z-index:100;font-size:12px;opacity:0;transition:.2s;max-width:90vw}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
/* Experiment workspace */
.lab-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:15px;margin-bottom:23px}.back-link{background:none;color:#899780;font-size:11px;display:flex;gap:7px;align-items:center;padding:0;margin-bottom:14px}.back-link .icon{width:14px}.lab-heading h1{font-size:26px;font-weight:600;margin:3px 0 6px}.lab-heading p{font-size:12px;color:#8c9784;margin:0}.lab-toolbar{display:flex;gap:8px;margin-top:24px}.steps{display:flex;align-items:center;gap:8px;margin:0 0 22px;background:#fff;border:1px solid var(--line);border-radius:9px;padding:13px 18px}.step{display:flex;align-items:center;gap:7px;font-size:11px;color:#a3ad9d;flex:1}.step i{display:grid;place-items:center;border-radius:50%;background:#f0f3eb;width:23px;height:23px;font-style:normal;font-size:10px}.step.active{color:var(--green)}.step.active i{background:var(--green);color:white}.step-arrow{color:#c5cdbf}.lab-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:20px;align-items:start}.scene-panel{border:1px solid var(--line);border-radius:12px;background:#fff;overflow:hidden}.scene-top{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--line);gap:8px}.live-badge{font-size:10px;color:var(--green);display:flex;gap:6px;align-items:center}.live-badge i{width:6px;height:6px;background:#79a57a;border-radius:50%}.scene-top small{font-size:10px;color:#a0aa97}.canvas-wrap{position:relative;background:#f1f4ed;aspect-ratio:1.85;overflow:hidden}.canvas-wrap canvas{width:100%;height:100%;display:block;touch-action:none}.scene-status{position:absolute;top:15px;left:18px;padding:4px 8px;background:#ffffffc9;border:1px solid #e3e8db;border-radius:4px;font-size:10px;color:#6a7d5d;pointer-events:none}.scene-hint{position:absolute;bottom:12px;right:15px;color:#99a88d;font-size:9px;pointer-events:none}.scene-controls{display:flex;align-items:center;gap:7px;padding:13px 15px;flex-wrap:wrap}.scene-controls .button{min-height:35px;padding:8px 13px;font-size:10px}.speed-select{margin-left:auto;display:flex;align-items:center;gap:5px;font-size:10px;color:#8b9780}.speed-select select{font-size:10px;background:#f5f7f1;border:1px solid var(--line);border-radius:5px;padding:6px;color:#647958}.overlay-options{display:flex;gap:14px;padding:0 18px 15px;font-size:10px;color:#8b9780;flex-wrap:wrap}.overlay-options label{display:flex;align-items:center;gap:5px}.overlay-options input{accent-color:var(--green)}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:13px}.metric{border:1px solid var(--line);background:white;border-radius:8px;padding:12px 14px}.metric small{display:block;color:#99a48e;font-size:9px}.metric strong{font-size:21px;font-weight:500;display:block;margin-top:3px}.metric strong em{font-size:10px;font-style:normal;color:#a1ac97;margin-left:5px}.panel{border:1px solid var(--line);border-radius:11px;padding:19px;background:white;margin-bottom:14px}.panel h3{font-size:13px;margin:0 0 15px;font-weight:600;display:flex;justify-content:space-between;align-items:center}.panel h3 small{font-size:9px;color:#9baa8f;font-weight:400}.parameter{margin:18px 0}.parameter:first-of-type{margin-top:0}.parameter:last-child{margin-bottom:2px}.parameter label{display:flex;justify-content:space-between;gap:5px;align-items:center;font-size:11px;color:#7f8f71}.parameter output{font-size:13px;font-weight:600;color:#3e674a}.parameter input[type=range]{width:100%;margin:12px 0 0;accent-color:var(--green);height:5px;cursor:pointer}.range-labels{display:flex;justify-content:space-between;font-size:8px;color:#b0baa5;margin-top:3px}.presets{display:flex;flex-wrap:wrap;gap:5px}.presets button{background:#f4f6ef;border:1px solid #e6ebde;border-radius:5px;font-size:9px;padding:6px 8px;color:#7c8e6d}.panel-note{font-size:10px;color:#a0ab93;line-height:1.8;margin:12px 0 0}.prediction-question{font-size:12px;line-height:1.8;margin:0 0 11px}.prediction-options{display:flex;gap:6px;flex-wrap:wrap}.prediction-options button{font-size:10px;padding:7px 9px;border:1px solid #e4e9db;background:white;border-radius:5px}.prediction-options button.selected{background:#eaf2e5;border-color:#8da980;color:var(--green)}.prediction-note{font-size:9px;color:#9aa68d;margin:10px 0 0}.explain-panel{margin-top:18px;background:white;border:1px solid var(--line);border-radius:11px;padding:21px}.explain-panel h3{font-size:14px;margin:0 0 12px}.explain-panel p{font-size:12px;color:#839176;line-height:1.9}.hint-button{background:#f0f4e9;border:1px solid #dde6d2;color:#6f875c;padding:7px 12px;font-size:10px;border-radius:5px}.hint-content{font-size:12px;background:#f6f8f0;padding:13px;border-radius:6px;line-height:1.9;margin-top:10px;color:#748664}.formula{font-family:'DM Sans',sans-serif;color:#365f44;font-size:16px;margin:10px 0;letter-spacing:.5px}.model-details{border-top:1px solid var(--line);margin-top:17px;padding-top:13px;font-size:10px;color:#8e9d80}.model-details summary{cursor:pointer;color:#80936f}.model-details p{font-size:10px}.result-box{padding:16px;background:#edf3e8;border:1px solid #dae6d1;border-radius:8px;margin:16px 0}.result-box h4{margin:0;font-size:13px}.result-box p{font-size:11px;margin-bottom:0}.reflection{width:100%;border:1px solid var(--line);border-radius:6px;padding:10px;resize:vertical;min-height:65px;font-size:11px;color:#53664a;background:#fbfcf8}.challenge{border-top:1px solid var(--line);padding-top:15px;margin-top:15px}.challenge h4{font-size:12px;margin:0 0 8px}.challenge .feedback{font-size:11px;margin-top:10px}.comparison{margin-top:15px}.comparison table{width:100%;border-collapse:collapse;font-size:10px}.comparison th,.comparison td{padding:9px;text-align:left;border-bottom:1px solid var(--line)}.comparison th{color:#9ca88f;font-weight:400}.record-page h1,.tool-page h1{font-size:27px;margin:3px 0 8px}.page-intro{font-size:12px;color:#95a087;margin-bottom:25px}.empty-state{background:white;border:1px dashed #d6dfcb;border-radius:12px;text-align:center;padding:60px 25px}.empty-state .icon{width:40px;height:40px;margin:0 auto 16px;color:#8ca279}.empty-state h3{font-size:17px;font-weight:500}.empty-state p{color:#9ba68e;font-size:12px}.consent{display:flex;gap:9px;align-items:flex-start;font-size:11px;color:#8a987b;padding:16px;background:#eef2e7;border-radius:8px;margin-bottom:20px}.consent input{accent-color:var(--green);margin-top:4px}.record-card{padding:20px;border-radius:9px;border:1px solid var(--line);background:#fff;margin:12px 0;display:flex;justify-content:space-between;gap:15px}.record-card h3{margin:0 0 5px;font-size:14px}.record-card p{font-size:11px;color:#8c9a7c;margin:4px 0}.record-card time{font-size:10px;color:#a7af9f}.tool-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:19px}.tool-card{padding:25px;border:1px solid var(--line);border-radius:12px;background:white}.tool-card h3{font-size:17px;margin:13px 0}.tool-card p{font-size:12px;color:#8e9c7d;line-height:1.9}.tool-card .icon{color:#72915d;width:28px;height:28px}.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:25px 0}.plan-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:25px 21px}.plan-card.featured{border:1px solid #9cb28c;background:#f0f5e9}.plan-card h3{font-size:17px;margin:10px 0}.plan-card .price{font-size:26px;margin:17px 0;color:#49673b}.plan-card .price small{font-size:10px;color:#9aa68d}.plan-card li{font-size:11px;color:#8c9a7c;margin:10px 0}.plan-card ul{padding-left:17px}.plan-card .button{width:100%;margin-top:10px}.tag-outline{font-size:9px;padding:3px 6px;border:1px solid #dce5d2;border-radius:4px;color:#92a27f}.teacher-mode .sidebar,.teacher-mode .topbar,.teacher-mode footer{display:none}.teacher-mode .app-shell{margin-left:0}.teacher-mode main{max-width:1800px;padding:20px 30px}.teacher-mode .lab-layout{grid-template-columns:minmax(0,1fr) 320px}.teacher-mode .canvas-wrap{aspect-ratio:2}.teacher-mode .explain-panel{display:none}.teacher-mode .lab-heading h1{font-size:30px}.teacher-mode .panel h3{font-size:16px}.teacher-mode .parameter label{font-size:14px}.teacher-mode .scene-status{font-size:14px}.teacher-mode .toast{left:50%}.lesson-sheet{font-size:12px;line-height:2}.lesson-sheet textarea{width:100%;min-height:75px;border:1px solid var(--line);border-radius:6px;padding:10px;font-size:12px}.source-page{max-width:820px}.source-page h2{font-size:18px}.source-page p{font-size:13px;color:#88977a;line-height:2}.energy-bars{display:flex;gap:12px;align-items:center;font-size:9px;color:#91a37e;padding:0 18px 13px}.energy-bars progress{height:7px;width:85px;accent-color:#6b9673}.energy-bars progress:last-child{accent-color:#d6b35a}.no-results{padding:35px;text-align:center;font-size:12px;color:#91a080;grid-column:1/-1}
@media(min-width:1500px){.card-visual{height:190px}.hero h2{font-size:42px}.hero{min-height:325px}.hero-copy{padding:34px 40px}.hero-art>svg{max-height:350px}.card-body{padding:21px}.hero p{font-size:12px}}
@media(max-width:1180px){.sidebar{width:205px;padding-left:13px;padding-right:13px}.app-shell{margin-left:205px}.topbar{padding:0 27px}main{padding:27px}.hero h2{font-size:30px}.hero-copy{padding-left:25px}.experiment-grid{gap:13px}.card-body{padding:13px}.card-body h3{font-size:13px}.card-visual{height:140px}.path-item{padding:12px 10px;gap:8px}.path-item strong{font-size:11px}.path-item small{font-size:9px}.lab-layout{grid-template-columns:minmax(0,1fr) 250px}.lab-toolbar{flex-wrap:wrap;justify-content:flex-end}.lab-heading h1{font-size:22px}.plan-grid{gap:10px}.plan-card{padding:17px}}
@media(max-width:960px){.sidebar{width:180px}.app-shell{margin-left:180px}.brand{font-size:25px;margin-left:7px}.brand-mark{width:37px;height:43px;font-size:35px}.brand-mark i{left:15px;top:26px}.nav-item{padding:12px 9px;gap:8px;font-size:11px}.nav-item .icon{width:17px}.pro-note{padding:11px 9px}.pro-note h3{font-size:11px}.topbar{padding:0 22px}.hero h2{font-size:26px}.hero{min-height:285px}.hero-copy{padding:24px 0 22px 22px}.hero p{max-width:240px;font-size:10px}.hero-buttons{gap:0}.hero-buttons .button{padding:8px 11px;font-size:10px}.hero-art{margin-left:-15px}.quick-path{gap:9px}.path-item .path-icon{display:none}.experiment-grid{grid-template-columns:repeat(2,1fr)}.card-visual{height:160px}.lab-layout{grid-template-columns:1fr}.lab-side{display:grid;grid-template-columns:1fr 1fr;gap:13px}.lab-heading{display:block}.lab-toolbar{margin-top:13px;justify-content:flex-start}.teacher-mode .lab-layout{grid-template-columns:1fr}.teacher-mode .lab-side{grid-template-columns:1fr 1fr}.plan-grid{grid-template-columns:1fr}.plan-card ul{display:flex;gap:25px;flex-wrap:wrap}.plan-card .button{width:auto}.section-heading h2 small{display:none}.top-actions{gap:12px}.breadcrumbs{font-size:10px}footer{padding:20px 27px;flex-direction:column}.toast{left:calc(50% + 70px)}}
@media(max-width:700px){.sidebar{transform:translateX(-100%);width:230px;transition:.2s;box-shadow:20px 0 80px #263b3320}.sidebar.open{transform:translateX(0)}.app-shell{margin-left:0}.mobile-menu{display:inline-grid!important}.topbar{height:65px;padding:0 19px}.breadcrumbs{font-size:10px}.breadcrumbs>span{margin:0 8px}.top-actions{gap:9px}.desktop-label,.top-divider{display:none}.top-actions .text-button{display:none}.avatar{width:29px;height:29px}.profile{padding:0}main{padding:23px 18px 15px}.welcome-row h1{font-size:22px}.welcome-row p{font-size:11px;max-width:230px}.date-label{display:none}.hero{grid-template-columns:1fr;min-height:475px}.hero-copy{padding:23px 25px 0}.hero h2{font-size:34px;margin:13px 0 10px}.hero h2 br{display:none}.hero p{max-width:295px;font-size:11px}.hero-art{height:215px;margin:-10px 0 0}.hero-number{display:none}.hero-art>svg{width:92%}.hero-buttons .button{font-size:11px;padding:9px 13px}.art-note{bottom:10px;right:20px}.quick-path{grid-template-columns:1fr;gap:8px;margin-bottom:27px}.path-item{padding:12px 14px;gap:12px}.path-item .path-icon{display:grid;width:31px;height:31px}.path-item strong{font-size:12px}.path-item small{font-size:10px}.section-heading{gap:10px;align-items:flex-start}.section-heading h2{font-size:18px}.segmented button{font-size:9px;padding:6px 8px}.filter-row{gap:6px}.filter-row>small{display:none}.experiment-grid{gap:11px}.card-visual{height:125px}.card-label{left:8px;top:8px;font-size:8px;padding:2px 5px}.card-number{display:none}.card-body{padding:11px}.card-body h3{font-size:12px;min-height:20px}.card-body p{font-size:9px;min-height:45px}.card-tags{gap:3px}.card-tags span{font-size:8px;padding:2px 4px}.card-foot{margin-top:10px;gap:4px;flex-wrap:wrap}.card-foot small{font-size:8px}.card-foot button{font-size:9px}.bottom-banner{padding:16px;gap:12px;flex-wrap:wrap}.bottom-banner p{font-size:9px}.bottom-banner button{margin-left:0;min-height:32px;padding:6px 12px;font-size:10px}.bottom-banner .banner-icon{display:none}.toast{left:50%;width:max-content;max-width:90vw;font-size:11px}.lab-heading h1{font-size:23px}.lab-heading p{font-size:11px}.steps{padding:11px 9px;gap:3px}.step{font-size:9px;gap:4px}.step i{width:20px;height:20px;font-size:9px}.step-arrow{font-size:10px}.lab-side{grid-template-columns:1fr}.panel{padding:17px}.canvas-wrap{aspect-ratio:1.45}.scene-top{padding:11px}.scene-top small{font-size:8px}.scene-status{font-size:9px;left:10px;top:10px}.scene-hint{font-size:7px;right:8px}.scene-controls{padding:10px 9px;gap:5px}.scene-controls .button{font-size:9px;padding:8px 9px}.speed-select{font-size:9px}.speed-select select{padding:5px}.metrics{gap:7px}.metric{padding:10px}.metric strong{font-size:19px}.metric small{font-size:8px}.explain-panel{padding:17px}.tool-grid{grid-template-columns:1fr}.record-card{display:block}.record-card .button{margin-top:8px}.teacher-mode main{padding:14px}.teacher-mode .canvas-wrap{aspect-ratio:1.5}.teacher-mode .lab-side{grid-template-columns:1fr}.lab-toolbar .button{font-size:10px;padding:8px 11px}.source-page p{font-size:12px}.energy-bars{padding-left:10px;gap:7px}.energy-bars progress{width:65px}footer{font-size:8px;padding:16px 18px}.plan-card ul{display:block}dialog{padding:25px 20px}.welcome-row{margin-bottom:18px}.hero-pill{font-size:9px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}@media print{.sidebar,.topbar,footer,.lab-toolbar,.modal-close,.button{display:none!important}.app-shell{margin:0}dialog{position:static;display:block;max-height:none;width:100%;border:0;box-shadow:none}body>div,body>aside,body>a{display:none!important}dialog::backdrop{display:none}}
/* Full local workspace */
.sidebar{overflow-y:auto}.workspace-notice{padding:13px 16px;background:#f6f2e7;border:1px solid #e8dfc5;border-radius:8px;font-size:11px;color:#998456;margin:20px 0}.workspace-notice span{font-weight:600;color:#7e6a40;margin-right:9px}.workspace-bar{display:flex;align-items:center;justify-content:space-between;gap:15px;flex-wrap:wrap;margin:22px 0}.workspace-bar h2{margin:0;font-size:20px}.workspace-bar>span{font-size:12px;color:#849476}.workspace-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:22px 0}.workspace-section-title{font-size:16px;margin:30px 0 15px;font-weight:600}.dashboard-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:13px;margin:20px 0}.dashboard-stats .metric{padding:20px}.dashboard-stats .metric strong{font-size:30px}.form-field{display:block;margin:0 0 18px;font-size:12px;color:#7c8d6c}.form-field>span{display:block;margin-bottom:7px;font-weight:500}.form-field input,.form-field textarea,.form-field select,.form-input,.workspace-bar select{display:block;width:100%;border:1px solid #dfe6d6;border-radius:6px;background:#fbfcf8;color:#425d36;padding:11px 12px;min-height:43px;max-width:100%;font:inherit}.form-field textarea{min-height:95px;resize:vertical;line-height:1.9}.form-actions{display:flex;gap:8px;flex-wrap:wrap}.assignment-card{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;background:#fff;border:1px solid var(--line);padding:22px;border-radius:10px;margin:13px 0}.assignment-card h3{font-size:16px;margin:10px 0 7px}.assignment-card p{font-size:12px;line-height:1.9;color:#889779;margin:5px 0}.assignment-card small{font-size:10px;color:#a0ac92}.assignment-actions{display:flex;flex-direction:column;gap:8px;min-width:125px}.table-scroll{overflow-x:auto}.workspace-table{width:100%;border-collapse:collapse;font-size:11px;min-width:650px}.workspace-table th,.workspace-table td{padding:13px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;max-width:250px;overflow-wrap:anywhere}.workspace-table th{color:#91a080;font-weight:500}.insight-row{display:flex;gap:20px;flex-wrap:wrap;font-size:11px;color:#879575;background:#f3f6ec;border-radius:6px;padding:14px;margin-top:15px}.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:20px}.content-layout .panel{padding:23px}.version-entry{border-bottom:1px solid var(--line);padding:11px 0;font-size:11px}.version-entry strong{display:block;font-weight:500}.version-entry small{font-size:9px;color:#9aaa88}.task-banner{display:flex;align-items:center;gap:15px;flex-wrap:wrap;background:#e7f0e0;border:1px solid #d3e0c8;border-radius:10px;padding:15px 20px;margin-bottom:24px}.task-banner strong{font-size:13px}.task-banner span{font-size:11px;color:#7a9067;flex:1}.billing-toggle{width:max-content;margin-top:25px}.billing-toggle button{padding:9px 20px;font-size:12px}.order-row{display:flex;align-items:center;justify-content:space-between;gap:15px;flex-wrap:wrap;border-top:1px solid var(--line);padding:16px 0;font-size:12px}.order-row strong{display:block;font-weight:500}.order-row small{display:block;color:#a4af96;font-size:9px;margin-top:4px}.checkout-summary{padding:23px;border-radius:10px;background:#f0f5e8}.checkout-summary strong{font-size:30px;color:#3f683a}.checkout-summary small{font-size:11px;color:#9aaa87}.checkout-summary h3{margin:0 0 8px}.tool-page h1{line-height:1.5}.plan-card .price{white-space:nowrap}.plan-card .price small{display:block}.teacher-mode #ex-level-text{font-size:15px}.canvas-wrap>svg{display:block;width:100%;height:100%;background:#f1f4ed}.sidebar .nav-rule{margin:15px 13px}.sidebar .nav-item{padding-top:10px;padding-bottom:10px}.sidebar .side-bottom{padding-top:15px}.install-card{background:#f0f4e9;border:1px solid var(--line);border-radius:8px;padding:15px;margin-top:15px}
@media(max-width:1100px){.content-layout{grid-template-columns:1fr}.content-layout>aside{display:grid;grid-template-columns:1fr 1fr;gap:15px}.dashboard-stats{gap:10px}.dashboard-stats .metric{padding:15px}.workspace-notice{font-size:10px}}
@media(max-width:700px){.dashboard-stats{grid-template-columns:1fr 1fr}.assignment-card{display:block;padding:18px}.assignment-actions{flex-direction:row;flex-wrap:wrap;margin-top:15px;min-width:0}.assignment-actions .button{font-size:10px;padding:8px 10px}.content-layout>aside{grid-template-columns:1fr}.workspace-bar{gap:10px}.workspace-bar .button{font-size:10px;padding:8px 12px}.workspace-notice{padding:12px}.workspace-notice span{display:block;margin-bottom:3px}.content-layout .panel{padding:18px}.tool-page h1{font-size:24px}.order-row{gap:9px}.task-banner{padding:14px;gap:9px}.task-banner span{flex-basis:100%}.workspace-bar select{font-size:11px}.teacher-mode .lab-heading{margin-bottom:12px}}

/* The experiment link covers its entire card, with a single keyboard stop. */
.experiment-card{position:relative;cursor:pointer}
.card-foot .experiment-link{color:var(--green);font-size:10px;padding:4px 0;display:flex;gap:8px;align-items:center}
.experiment-link::after{content:"";position:absolute;inset:0;border-radius:11px}
.experiment-card:has(.experiment-link:focus-visible){outline:3px solid #bc8c32;outline-offset:4px}
.experiment-link:focus-visible{outline:none}
@media(max-width:700px){.card-foot .experiment-link{font-size:9px}}