*{box-sizing:border-box}body{margin:0;font-family:Inter,"Segoe UI",Arial,sans-serif;color:var(--text);background:var(--background);line-height:1.6}h1,h2,h3,h4{color:var(--heading);line-height:1.2;letter-spacing:-.035em}h1{font-size:clamp(30px,4vw,48px);margin:0 0 18px}h2{font-size:30px;margin:0 0 18px}h3{font-size:21px;margin:8px 0 14px}p{margin:8px 0 20px}a{color:inherit;text-decoration:none}a:hover{color:var(--primary)}img{max-width:100%;height:auto}button,input,textarea,select{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--accent);outline-offset:3px}input,textarea,select{max-width:100%;padding:11px 13px;border:1px solid #d3dce7;border-radius:9px;background:white;color:#172033}textarea{resize:vertical;min-height:90px}small,.muted{color:#65748b}code{background:#edf1f8;padding:3px 6px;border-radius:4px;word-break:break-word}.container{max-width:1220px;margin:0 auto;padding:0 28px}.header{background:var(--header);border-bottom:1px solid #e6ecf3}.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:96px;gap:22px}.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:22px;line-height:1.2;flex-shrink:0}.brand small{display:block;font-size:11px;font-weight:500;letter-spacing:.02em;margin-top:5px}.logo{background:var(--primary);color:#fff;width:47px;height:47px;display:grid;place-items:center;border-radius:13px;font-size:25px;letter-spacing:-.08em}.brand-img{width:48px;height:48px;object-fit:contain}nav{display:flex;align-items:center;gap:24px;font-size:14px;font-weight:600}.account-link{border:1px solid #d8e1ee;border-radius:8px;padding:9px 14px}.menu-toggle{display:none}.hero{padding:65px 0 60px;background:linear-gradient(115deg,#edf5ff, #f5f1ff 70%,#fff1e2);overflow:hidden}.hero-inner{display:grid;grid-template-columns:1.2fr 1fr;gap:60px;align-items:center}.eyebrow{color:var(--primary);font-size:11px;font-weight:800;letter-spacing:.13em;text-transform:uppercase}.hero .eyebrow{margin-bottom:18px}.hero h1{font-size:clamp(38px,5vw,64px);max-width:660px;line-height:1.09;letter-spacing:-.045em}.hero p{font-size:17px;max-width:530px;color:#586880}.hero-cta,.actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px}.btn,button.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--button);border:1px solid transparent;color:white;border-radius:9px;padding:11px 20px;font-weight:700;font-size:14px}.btn:hover{filter:brightness(.94);color:white}.btn.secondary{background:#fff;color:#213854;border-color:#d7e0ee}.btn.danger{background:#a22626}.btn.small{padding:7px 12px;font-size:13px}.text-button{border:0;background:transparent;color:var(--primary);padding:6px 0;font-weight:600}.periodic-panel{position:relative;padding:26px;border:1px solid #dbe3f4;border-radius:24px;background:#ffffff9e;transform:rotate(2deg);box-shadow:0 16px 60px #42588910}.periodic-heading{font-size:11px;letter-spacing:.16em;color:#637293;margin-bottom:20px}.elements{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.element{background:white;border:1px solid #dce6f3;border-radius:12px;min-height:113px;padding:10px 14px}.element:nth-child(2n){background:#f1eaff;border-color:#e8ddfd}.element:nth-child(3n){background:#fff0dd;border-color:#fce1ba}.element small{display:block;font-size:11px}.element strong{display:block;font-size:35px;line-height:1.1;letter-spacing:-.04em}.element span{font-size:11px;color:#59657a}.hero-picture img{width:100%;max-height:430px;object-fit:cover;border-radius:22px}.section{padding:54px 0}.section.soft{background:#edf2f9}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:24px}.section-heading h2{margin:5px 0 0}.section-heading>a{font-size:13px;font-weight:700;color:var(--primary);white-space:nowrap}.intro-strip{padding:24px 0;border-bottom:1px solid #e4eaf3;background:white}.intro-strip .container{display:flex;justify-content:space-between;align-items:center;gap:20px}.intro-strip p{margin:0;font-size:13px;color:#5a6981}.search-form{display:flex;gap:8px;min-width:310px}.search-form input{width:100%;min-width:0}.subject-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.chip{border:1px solid #dce5f0;background:#fff;border-radius:30px;padding:7px 15px;font-size:13px}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.card{background:#fff;border:1px solid #e0e7ef;border-radius:14px;overflow:hidden;transition:box-shadow .15s,transform .15s}.card:hover{transform:translateY(-3px);box-shadow:0 12px 30px #182d5210}.card-visual{height:178px;background:linear-gradient(135deg,#e0edff,#eef5ff);display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}.type-experiment{background:linear-gradient(135deg,#fff1da,#ffe4c7)}.type-resource{background:linear-gradient(135deg,#e9e0ff,#f2ecff)}.type-website{background:linear-gradient(135deg,#dbf5f0,#eaf8f4)}.card-visual img{width:100%;height:100%;object-fit:cover}.visual-symbol{font-size:63px;font-weight:800;letter-spacing:-.06em;color:#254b7d}.type-experiment .visual-symbol{color:#a34e11}.type-resource .visual-symbol{color:#624296;font-size:43px;letter-spacing:.03em}.visual-label{position:absolute;bottom:15px;left:18px;font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:#4d6280}.card-body{padding:23px}.card-body p{font-size:14px;color:#67758a;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.card-meta{display:flex;justify-content:space-between;font-size:12px;border-top:1px solid #edf0f5;padding-top:16px;gap:10px}.card-meta a{color:var(--primary);font-weight:700}.page-intro{padding:48px 0 28px}.page-intro h1{margin-top:10px}.listing-controls{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0}.listing-controls input{flex:1}.pagination{display:flex;justify-content:center;gap:12px;margin:32px 0}.article-wrap{max-width:880px;margin:0 auto;padding:50px 26px}.article-wrap h1{font-size:clamp(30px,4vw,46px)}.article-cover{width:100%;max-height:440px;object-fit:cover;border-radius:14px;margin:24px 0}.article-meta{display:flex;gap:15px;flex-wrap:wrap;color:#6c7990;font-size:13px}.prose{font-size:17px;line-height:1.85;overflow-wrap:anywhere}.prose h2,.prose h3{margin-top:32px}.prose img{display:block;margin:22px auto;border-radius:10px}.prose table{width:100%;border-collapse:collapse;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid #dce3ee;padding:8px 12px}.prose blockquote{border-left:4px solid var(--primary);background:#edf3ff;padding:16px 22px;margin:20px 0}.prose pre{white-space:pre-wrap;background:#eaf0f9;padding:20px}.download-box{background:#eef1ff;border:1px solid #dce1fa;border-radius:14px;padding:26px;margin:28px 0}.download-box strong{font-size:28px}.facts{display:flex;flex-wrap:wrap;gap:12px;margin:25px 0}.facts span{background:white;border:1px solid #dde6ef;padding:10px 15px;border-radius:9px}.safety{border-left:4px solid #e5a722;background:#fff7e4;padding:18px 22px}.video{width:100%;aspect-ratio:16/9;border:0;border-radius:12px;margin:20px 0}.footer{background:var(--footer);color:#d1dded;padding:45px 0 20px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:70px;font-size:13px}.footer strong{display:block;color:#fff;margin-bottom:15px}.footer a{display:block;margin:6px 0}.footer-title{font-size:25px;font-weight:750;color:#fff}.footer p{max-width:400px;line-height:1.8}.footer-bottom{display:flex;justify-content:space-between;border-top:1px solid #ffffff20;padding-top:18px;margin-top:28px;font-size:11px}.notice{padding:14px 22px;margin:18px auto;background:#ebf6ef;border:1px solid #cce5d5;color:#235f38;border-radius:10px;max-width:1160px}.notice.error{background:#fff0ee;color:#912c26;border-color:#f3c9c5}.empty{text-align:center;padding:50px 25px;background:#fff;border:1px dashed #d3deeb;border-radius:12px;margin:25px 0}.auth-card{max-width:470px;padding:34px;margin:65px auto;border:1px solid #dce5ef;border-radius:16px;background:white}.auth-card h1{font-size:30px}.field{display:flex;flex-direction:column;gap:7px;margin-bottom:17px;min-width:0}.field>span{font-size:13px;font-weight:650}.check{display:flex;align-items:center;gap:10px;margin:12px 0;font-size:14px}.check input{accent-color:var(--primary);width:18px;height:18px;flex-shrink:0}.skip{position:absolute;left:-9999px}.skip:focus{left:15px;top:10px;z-index:10;background:white;padding:12px}.sidebar{width:244px;position:fixed;inset:0 auto 0 0;background:#fff;border-right:1px solid #e1e7ef;overflow-y:auto;padding:26px 17px;z-index:20}.sidebar .brand{margin:0 8px 30px;font-size:19px}.sidebar nav{display:flex;flex-direction:column;align-items:stretch;gap:4px}.sidebar nav a{padding:10px 13px;border-radius:8px;font-weight:500;font-size:13px}.sidebar nav a.active{background:#eaf1ff;color:#2057c7;font-weight:700}.site-back{display:block;border-top:1px solid #eee;padding:20px 12px;margin-top:20px;font-size:13px}.sidebar form{padding:0 12px}.admin-shell{margin-left:244px}.admin-top{background:#fff;border-bottom:1px solid #e1e7ef;padding:19px 34px;display:flex;justify-content:space-between;gap:15px;font-size:12px}.admin-main{max-width:1450px;padding:34px;margin:auto}.page-title{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:26px}.page-title h1{font-size:30px;margin:7px 0}.page-title p{color:#6c7b90;margin:0;font-size:13px}.panel{background:white;border:1px solid #e0e7ef;border-radius:12px;padding:25px;margin:20px 0;min-width:0}.panel h2{font-size:21px}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:17px}.stat{padding:22px;background:white;border:1px solid #e1e7ee;border-radius:12px}.stat span{font-size:12px;color:#62738b}.stat strong{display:block;font-size:34px;margin:7px 0 0;line-height:1.1}.table-wrap{overflow-x:auto;max-width:100%}table{width:100%;border-collapse:collapse;font-size:13px;text-align:left}th{font-size:11px;color:#6b7990;letter-spacing:.02em;font-weight:650;background:#f7f9fc}th,td{padding:13px 12px;border-bottom:1px solid #e8edf4;vertical-align:middle}td form{display:inline-block}td input{max-width:130px}.status{padding:4px 9px;border-radius:20px;background:#edf2f8;display:inline-block;font-size:11px;white-space:nowrap}.status.on{background:#e4f4eb;color:#206841}.status.off{background:#f1f2f5;color:#738097}.toggle-row{display:flex;justify-content:space-between;align-items:center;gap:15px;padding:16px 0;border-bottom:1px solid #edf0f5}.toggle-row h3{font-size:16px;margin:0}.toggle-row p{font-size:12px;color:#748097;margin:4px 0 0}.form-foot{padding:18px 0;display:flex;gap:12px;align-items:center}.editor-tools{display:flex;flex-wrap:wrap;gap:5px;background:#f2f5fa;border:1px solid #d3dce7;padding:8px;border-radius:8px 8px 0 0}.editor-tools button{padding:4px 10px;border:1px solid #d8e0ec;background:white;border-radius:5px;font-size:12px}.html-editor{min-height:320px;padding:18px;border:1px solid #d3dce7;background:white;border-radius:0 0 8px 8px;overflow-wrap:anywhere}.html-editor img{max-height:220px}.html-editor table,.html-editor td{border:1px solid #ccc}.media-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.media-tile{border:1px solid #dfe6ef;padding:12px;border-radius:9px;overflow:hidden;font-size:12px}.media-tile img{height:130px;width:100%;object-fit:contain;background:#f2f5fa}.media-tile .file-icon{height:100px;display:grid;place-items:center;background:#eef1fa;font-size:28px;font-weight:700}.media-tile p{overflow-wrap:anywhere}.bar-chart{display:flex;gap:10px;align-items:flex-end;height:160px;padding:18px 0}.bar-col{flex:1;text-align:center;font-size:10px;color:#65758c}.bar{background:#477bed;min-height:3px;border-radius:4px 4px 0 0;margin:3px auto;width:65%}.login-note{font-size:13px;color:#6c7890}.profile{display:flex;gap:20px;align-items:center}.avatar{width:55px;height:55px;border-radius:50%;object-fit:cover}.switch-note{background:#f0f5ff;border-radius:10px;padding:15px 20px;font-size:13px;color:#42608e}.form-error{color:#a42d23}.truncate{max-width:320px;overflow-wrap:anywhere}
@media(min-width:1450px){.container{max-width:1280px}}@media(max-width:1100px){nav{gap:13px;font-size:12px}.brand{font-size:18px}.hero-inner{gap:30px}.sidebar{width:214px}.admin-shell{margin-left:214px}.admin-main{padding:24px}.media-grid{grid-template-columns:repeat(3,1fr)}}@media(max-width:900px){.header-inner{flex-wrap:wrap;padding-top:15px;padding-bottom:15px;min-height:80px}.menu-toggle{display:block;border:1px solid #dce4ef;background:white;border-radius:6px;padding:7px 12px}.header nav{display:none;width:100%;flex-wrap:wrap;padding:12px 0;font-size:14px}.header nav.open{display:flex}.hero{padding:42px 0}.hero-inner{grid-template-columns:1fr 0.8fr;gap:25px}.hero h1{font-size:39px}.periodic-panel{padding:15px}.elements{gap:7px}.element{padding:10px;min-height:90px}.element strong{font-size:27px}.element span{font-size:9px}.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.stats{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3,.grid-2{grid-template-columns:1fr}.footer-grid{gap:30px}.admin-main{padding:18px}.intro-strip .container{align-items:stretch;flex-direction:column}}
@media(max-width:650px){.container{padding:0 20px}.hero-inner{grid-template-columns:1fr}.hero{padding:38px 0}.hero h1{font-size:41px}.hero p{font-size:15px}.periodic-panel{transform:none;padding:18px}.element{min-height:82px}.element strong{font-size:27px}.element span{font-size:10px}.section{padding:35px 0}.cards{grid-template-columns:1fr}.card-visual{height:172px}.section-heading h2{font-size:25px}.section-heading{align-items:center}.footer-grid{grid-template-columns:1fr;gap:20px}.footer-bottom{flex-direction:column}.search-form{min-width:0}.auth-card{margin:30px 18px;padding:25px}.sidebar{position:static;width:auto;padding:15px;border:0;border-bottom:1px solid #dce4ee}.sidebar .brand{margin-bottom:13px}.sidebar nav{flex-direction:row;overflow-x:auto;gap:6px;white-space:nowrap}.sidebar nav a{flex-shrink:0;background:#f5f7fb}.sidebar .site-back,.sidebar form{display:inline-block;margin:8px 0 0;padding:4px 12px;border:0}.admin-shell{margin-left:0}.admin-top{padding:13px 20px}.admin-main{padding:18px 15px}.page-title h1{font-size:26px}.panel{padding:18px}.stats{gap:10px}.stat{padding:16px}.stat strong{font-size:28px}.media-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.listing-controls{flex-direction:column}.article-wrap{padding:30px 20px}.article-wrap h1{font-size:33px}.page-title{align-items:flex-start}.page-title>.btn{white-space:nowrap;padding:9px 12px}.table-wrap{margin:0 -3px}}
/* Theme values selected by the admin also tint secondary surfaces. */
.hero{background:linear-gradient(115deg,color-mix(in srgb,var(--primary) 9%,white),color-mix(in srgb,var(--secondary) 7%,white) 70%,color-mix(in srgb,var(--accent) 10%,white))}.type-resource{background:color-mix(in srgb,var(--secondary) 12%,white)}.type-resource .visual-symbol{color:var(--secondary)}.type-experiment{background:color-mix(in srgb,var(--accent) 15%,white)}.type-experiment .visual-symbol{color:color-mix(in srgb,var(--accent) 70%,#402500)}.section.soft{background:color-mix(in srgb,var(--primary) 5%,white)}.element:nth-child(2n){background:color-mix(in srgb,var(--secondary) 9%,white)}.element:nth-child(3n){background:color-mix(in srgb,var(--accent) 12%,white)}