/* DT Classroom student site */
:root{
  --paper:#f3efe6;--paper2:#fffdf7;--ink:#17212b;--navy:#16344c;--blue:#2463eb;
  --yellow:#f3c84b;--orange:#ef7a3a;--red2:#d94d4d;--green2:#2c9b6c;--line:#d8d0c2;
}
#dtSiteV2{position:fixed;inset:0;z-index:120;overflow:auto;background:var(--paper);color:var(--ink);font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif}
#dtSiteV2[hidden]{display:none!important}
.dt-shell{width:min(1440px,calc(100% - 40px));margin:0 auto;padding:0 0 70px}
.dt-nav{position:sticky;top:0;z-index:20;height:72px;background:rgba(243,239,230,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.dt-nav-inner{height:100%;width:min(1440px,calc(100% - 40px));margin:0 auto;display:flex;align-items:center;gap:18px}
.dt-brand{display:flex;align-items:center;gap:10px;min-width:max-content}
.dt-logo{width:42px;height:42px;border-radius:8px;background:var(--navy);color:#fff;display:grid;place-items:center;font:800 13px "JetBrains Mono",monospace;box-shadow:5px 5px 0 var(--yellow)}
.dt-brand b{font-size:17px;letter-spacing:-.03em}.dt-brand small{display:block;font-size:.75rem;color:#505b64;margin-top:1px}
.dt-links{display:flex;gap:3px;margin-left:auto}
.dt-link{border:0;background:transparent;color:#43515d;border-radius:8px;padding:9px 11px;font-size:12px;font-weight:700}
.dt-link:hover,.dt-link.active{background:#fff;border:1px solid var(--line);padding:8px 10px;color:var(--navy)}
.dt-actions{display:flex;gap:7px}.dt-action{border:1px solid var(--line);background:#fff;border-radius:9px;padding:8px 11px;font-size:.75rem;font-weight:700;color:var(--navy)}
.dt-action.primary{background:var(--navy);border-color:var(--navy);color:#fff}
.dt-hero{padding:42px 0 24px;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);gap:36px;align-items:center}
.dt-kicker{display:inline-flex;align-items:center;gap:8px;font:700 .75rem "JetBrains Mono",monospace;letter-spacing:.12em;text-transform:uppercase;color:#53616b}
.dt-kicker:before{content:"";width:28px;height:4px;background:var(--yellow)}
.dt-hero h1{font-size:clamp(40px,6vw,76px);line-height:.95;letter-spacing:-.055em;margin:12px 0 16px;color:var(--navy);max-width:10ch}
.dt-hero h1 em{font-style:normal;text-decoration:underline;text-decoration-thickness:8px;text-decoration-color:var(--yellow);text-underline-offset:4px}
.dt-hero p{font-size:15px;line-height:1.7;color:#53616b;max-width:58ch;margin:0}
.dt-buttons{display:flex;gap:8px;flex-wrap:wrap;margin-top:22px}
.dt-btn{border:1px solid var(--line);background:#fff;color:var(--navy);border-radius:9px;padding:10px 13px;font-size:12px;font-weight:800;box-shadow:2px 2px 0 #d7cebf}
.dt-btn:hover{transform:translateY(-1px)}.dt-btn.primary{background:var(--navy);color:#fff;border-color:var(--navy)}.dt-btn.yellow{background:var(--yellow);border-color:#c79e28;color:#272217}
.dt-workbench{position:relative;min-height:310px;border:2px solid var(--navy);background-color:#eaf2f4;background-image:linear-gradient(rgba(18,48,74,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(18,48,74,.08) 1px,transparent 1px);background-size:20px 20px;border-radius:10px;box-shadow:10px 10px 0 rgba(18,48,74,.14);overflow:hidden}
.dt-workbench:before{content:"STUDENT WORKBENCH";position:absolute;left:16px;top:13px;font:700 .75rem "JetBrains Mono",monospace;letter-spacing:.12em;color:#476071}
.dt-workbench svg{position:absolute;inset:32px 15px 12px;width:calc(100% - 30px);height:calc(100% - 44px)}
.dt-note{position:absolute;background:#fff6b7;border:1px solid #d9c765;padding:9px 11px;font:700 .75rem/1.35 Inter,sans-serif;box-shadow:3px 3px 0 rgba(0,0,0,.09);transform:rotate(-3deg)}
.dt-note.n1{right:18px;top:22px}.dt-note.n2{left:22px;bottom:17px;transform:rotate(2deg)}
.dt-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin:10px 0 34px}
.dt-strip-card{border:1px solid var(--line);background:#fff;border-radius:9px;padding:12px 13px;display:flex;gap:10px;align-items:center}
.dt-strip-icon{width:30px;height:30px;border-radius:7px;background:#eef1f2;display:grid;place-items:center;font:800 .75rem "JetBrains Mono",monospace;color:var(--navy)}
.dt-strip-card b{display:block;font-size:.75rem}.dt-strip-card span{font-size:.75rem;color:#76818a}
.dt-section-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-end;margin:30px 0 12px}
.dt-section-head h2{margin:0;color:var(--navy);font-size:23px;letter-spacing:-.03em}.dt-section-head p{margin:0;color:#4f5b64;font-size:.8125rem}
.dt-section{margin-top:32px}.dt-mini{font:700 .75rem "JetBrains Mono",monospace;letter-spacing:.14em;text-transform:uppercase;color:#5b5d58;margin-bottom:5px}
.dt-unit-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.dt-unit{--accent:#2463eb;position:relative;border:1px solid #d7d0c4;background:var(--paper2);border-radius:10px;min-height:260px;padding:17px;overflow:hidden;display:flex;flex-direction:column;box-shadow:3px 3px 0 rgba(32,42,49,.06);transition:transform .16s,box-shadow .16s}
.dt-unit:before{content:"";position:absolute;left:0;top:0;bottom:0;width:6px;background:var(--accent)}
.dt-unit:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 rgba(32,42,49,.09)}
.dt-unit-top{display:flex;justify-content:space-between;align-items:flex-start;gap:8px}.dt-unit-index{font:800 .75rem "JetBrains Mono",monospace;letter-spacing:.06em;color:var(--accent);color:color-mix(in srgb,var(--accent) 55%,#101820)}
.dt-glyph{width:52px;height:52px;border:1px solid #cfc7ba;border-radius:8px;background:#f1eee7;display:grid;place-items:center;color:var(--navy)}
.dt-glyph svg{width:31px;height:31px;stroke:currentColor;fill:none;stroke-width:1.7}
.dt-unit h3{font-size:18px;line-height:1.13;margin:10px 0 7px;color:var(--navy);letter-spacing:-.025em}
.dt-kind{font:700 .75rem "JetBrains Mono",monospace;letter-spacing:.1em;text-transform:uppercase;color:#56606a;margin-bottom:12px}
.dt-dots{display:flex;gap:4px;margin:2px 0 13px}.dt-dots i{height:5px;flex:1;background:#e6e0d5;border-radius:3px}.dt-dots i.done{background:var(--accent)}
.dt-topic-preview{font-size:.75rem;line-height:1.55;color:#56636d;margin-bottom:14px}
.dt-unit-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:12px;border-top:1px dashed #d9d1c3}
.dt-unit-foot span{font:700 .75rem "JetBrains Mono",monospace;color:#55616a}.dt-open{border:0;background:transparent;color:var(--accent);color:color-mix(in srgb,var(--accent) 55%,#101820);font-weight:800;font-size:.75rem;padding:0}
.dt-band{margin-top:36px;background:var(--navy);color:#fff;border-radius:12px;padding:22px;display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center;box-shadow:8px 8px 0 #d5cbbb}
.dt-band h2{margin:0;font-size:22px}.dt-band p{margin:5px 0 0;color:#c9d4dd;font-size:12px;line-height:1.5}.dt-band .dt-btn{box-shadow:none}
.dt-ext-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
.dt-ext{border:1px solid var(--line);background:#fff;border-radius:9px;padding:14px;min-height:142px;position:relative;overflow:hidden}
.dt-ext:after{content:"";position:absolute;right:-18px;bottom:-18px;width:74px;height:74px;border:10px solid rgba(18,48,74,.05);border-radius:50%}
.dt-ext b{font-size:13px;color:var(--navy)}.dt-ext p{margin:6px 0 0;color:#505c64;font-size:.75rem;line-height:1.5}.dt-ext .dt-mini{color:#7a5c0e}

/* Unit workspace */
.dt-course{background:#ede8de}
.dt-course-shell{width:min(1460px,calc(100% - 30px));margin:0 auto;padding:18px 0 50px}
.dt-course-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.dt-back{border:1px solid var(--line);background:#fff;border-radius:8px;padding:9px 11px;font-size:.75rem;font-weight:800;color:var(--navy)}
.dt-course-meta{font:700 .75rem "JetBrains Mono",monospace;letter-spacing:.08em;text-transform:uppercase;color:#6c767d}
.dt-course-layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:14px;align-items:start}
.dt-course-side{position:sticky;top:18px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px;max-height:calc(100vh - 36px);overflow:auto}
.dt-course-side h2{font-size:18px;line-height:1.15;margin:6px 0 4px;color:var(--navy)}.dt-course-side p{font-size:.75rem;color:#778087;margin:0 0 13px}
.dt-progress{height:7px;background:#ece7de;border-radius:6px;overflow:hidden;margin:8px 0 13px}.dt-progress i{display:block;height:100%;background:var(--courseAccent,#2463eb);width:0}
.dt-lessons{display:flex;flex-direction:column;gap:4px}.dt-lesson{border:1px solid transparent;background:transparent;border-radius:8px;padding:8px;display:flex;gap:8px;text-align:left;color:#42505a}
.dt-lesson:hover{background:#f7f4ee}.dt-lesson.active{background:#eef3f8;border-color:#cdd8e1;color:var(--navy)}
.dt-lesson .num{width:24px;height:24px;border-radius:6px;background:#ece8df;display:grid;place-items:center;font:800 .75rem "JetBrains Mono",monospace;flex:none}.dt-lesson.active .num{background:var(--courseAccent,#2463eb);color:#fff}
.dt-lesson .lt{font-size:.75rem;font-weight:700;line-height:1.3}.dt-lesson .tick{margin-left:auto;color:var(--green2);font-size:12px}
.dt-course-main{min-width:0}.dt-lesson-hero{background:#fff;border:1px solid var(--line);border-radius:10px;padding:22px;display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:20px;min-height:210px;position:relative;overflow:hidden}
.dt-lesson-hero:after{content:"";position:absolute;right:-70px;bottom:-80px;width:220px;height:220px;border:28px solid rgba(36,99,235,.08);border-radius:50%}
.dt-lesson-hero .ey{font:800 .75rem "JetBrains Mono",monospace;text-transform:uppercase;letter-spacing:.12em;color:var(--courseAccent,#2463eb)}
.dt-lesson-hero h1{font-size:32px;line-height:1.04;letter-spacing:-.04em;color:var(--navy);margin:9px 0 10px;max-width:20ch}.dt-lesson-hero .lead{font-size:12.5px;line-height:1.6;color:#5c6972;margin:0;max-width:65ch}
.dt-objectives{position:relative;z-index:1;background:#f5f2eb;border:1px dashed #cfc7bb;border-radius:8px;padding:13px}.dt-objectives b{font-size:.75rem;text-transform:uppercase;letter-spacing:.1em;color:#6c777f}.dt-objectives ul{margin:8px 0 0;padding-left:18px;font-size:.75rem;line-height:1.55;color:#4c5963}
.dt-tabs{display:flex;gap:5px;margin:12px 0}.dt-tab{border:1px solid var(--line);background:#f7f4ed;border-radius:8px;padding:8px 11px;font:800 .75rem "JetBrains Mono",monospace;text-transform:uppercase;letter-spacing:.05em;color:#647079}.dt-tab.active{background:var(--navy);border-color:var(--navy);color:#fff}
.dt-stage{background:#fff;border:1px solid var(--line);border-radius:10px;padding:20px;min-height:420px}
.dt-stage-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:14px}.dt-knowledge{border:1px solid #ddd6ca;border-radius:9px;padding:14px;background:#fffdf8}.dt-knowledge h3{font-size:13px;margin:0 0 6px;color:var(--navy)}.dt-knowledge p{margin:0;color:#5b6870;font-size:.75rem;line-height:1.6}.dt-knowledge strong{color:var(--navy)}
.dt-key-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.dt-key{border-top:5px solid var(--courseAccent,#2463eb);background:#f8f6f1;border-radius:7px;padding:13px;min-height:138px}.dt-key b{font-size:12px;color:var(--navy)}.dt-key p{font-size:.75rem;color:#66727a;line-height:1.5;margin:7px 0 0}
.dt-activity{border:1px solid #d8d0c4;background:#f6f3ec;border-radius:10px;padding:16px;min-height:330px}.dt-activity-head{display:flex;justify-content:space-between;gap:10px;align-items:start;margin-bottom:14px}.dt-activity-head h3{margin:0;font-size:15px;color:var(--navy)}.dt-activity-head p{margin:4px 0 0;font-size:.75rem;color:#6f797f}
.dt-lab{background:#fff;border:1px solid #d6cec1;border-radius:8px;padding:14px;min-height:240px}
.dt-lab-row{display:grid;grid-template-columns:140px 1fr 80px;gap:9px;align-items:center;margin:10px 0}.dt-lab-row label{font-size:.75rem;font-weight:700;color:#4e5b65}.dt-lab-row output{font:800 .75rem "JetBrains Mono",monospace;color:var(--navy);text-align:right}.dt-bar{height:12px;background:#e5dfd5;border-radius:6px;overflow:hidden}.dt-bar i{display:block;height:100%;background:var(--courseAccent,#2463eb);transition:width .2s}
.dt-range{width:100%;accent-color:var(--courseAccent,#2463eb)}
.dt-choice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.dt-choice{border:1px solid #d8d0c5;background:#fff;border-radius:8px;padding:12px;text-align:left}.dt-choice:hover{border-color:var(--courseAccent,#2463eb)}.dt-choice b{display:block;color:var(--navy);font-size:.75rem}.dt-choice span{display:block;color:#748088;font-size:.75rem;line-height:1.45;margin-top:4px}.dt-choice.selected{box-shadow:inset 0 0 0 2px var(--courseAccent,#2463eb)}
.dt-feedback{margin-top:12px;border-left:4px solid var(--courseAccent,#2463eb);background:#fff;padding:10px 12px;font-size:.75rem;line-height:1.5;color:#52606a}
.dt-challenge{background:#fff8cf;border:1px solid #dfc65c;border-radius:9px;padding:16px}.dt-challenge h3{margin:0 0 7px;color:#5d4b08}.dt-challenge p{font-size:12px;line-height:1.55;color:#64591f;margin:0}.dt-challenge textarea{width:100%;min-height:130px;margin-top:12px;border:1px solid #cabd83;background:#fffdf4;border-radius:7px;padding:10px;font:12px Inter,sans-serif;color:var(--ink)}
.dt-check{max-width:760px;margin:0 auto;border:1px solid #d8d0c4;border-radius:10px;padding:18px;background:#faf8f3}.dt-check h3{margin:0;color:var(--navy);font-size:17px}.dt-check p{font-size:12px;line-height:1.55;color:#53616b}.dt-options{display:grid;gap:7px;margin-top:12px}.dt-option{border:1px solid #d7d0c4;background:#fff;border-radius:8px;padding:10px 12px;text-align:left;font-size:.75rem}.dt-option.correct{border-color:#2c9b6c;background:#eaf7f0}.dt-option.wrong{border-color:#d94d4d;background:#fff0f0}
.dt-complete-row{display:flex;justify-content:flex-end;margin-top:14px}.dt-complete{border:0;background:var(--green2);color:#fff;border-radius:8px;padding:9px 12px;font-size:.75rem;font-weight:800}
.dt-sketch{width:100%;height:320px;display:block;background:#fff;background-image:linear-gradient(#e5e2da 1px,transparent 1px),linear-gradient(90deg,#e5e2da 1px,transparent 1px);background-size:20px 20px;border:1px solid #d0c8ba;border-radius:8px;touch-action:none}
.dt-sketch-tools{display:flex;gap:6px;margin-bottom:8px}.dt-sketch-tools button{border:1px solid #d4ccbf;background:#fff;border-radius:7px;padding:6px 9px;font-size:.75rem;font-weight:700;color:var(--navy)}
.dt-process{display:flex;flex-wrap:wrap;gap:6px}.dt-chip{border:1px solid #d6cec1;background:#fff;border-radius:999px;padding:7px 9px;font-size:.75rem}.dt-chip.on{background:var(--navy);color:#fff}
.dt-tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.dt-tool,.dt-teacher{border:1px solid var(--line);background:#fff;border-radius:9px;padding:16px;min-height:160px}.dt-tool h3,.dt-teacher h3{margin:0;color:var(--navy);font-size:15px}.dt-tool p,.dt-teacher p{font-size:.75rem;line-height:1.5;color:#68747c}.dt-tool .dt-btn{margin-top:8px}
.dt-revision{max-width:720px;margin:40px auto;background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px;text-align:center;box-shadow:8px 8px 0 #d7cebf}.dt-revision .q{font-size:23px;line-height:1.25;color:var(--navy);margin:18px auto;max-width:28ch}.dt-revision .ans{background:#f5f1e8;border-radius:8px;padding:15px;font-size:13px;line-height:1.6;color:#4c5962;margin:14px 0}
@media(max-width:1100px){.dt-hero{grid-template-columns:1fr}.dt-workbench{min-height:280px}.dt-unit-grid{grid-template-columns:repeat(2,1fr)}.dt-ext-grid{grid-template-columns:repeat(2,1fr)}.dt-course-layout{grid-template-columns:220px 1fr}.dt-lesson-hero{grid-template-columns:1fr}.dt-stage-grid{grid-template-columns:1fr}.dt-key-grid{grid-template-columns:1fr 1fr}}
@media(max-width:720px){.dt-shell,.dt-nav-inner{width:min(100% - 22px,1440px)}.dt-links{display:none}.dt-hero{padding-top:24px;gap:22px}.dt-hero h1{font-size:46px}.dt-strip{grid-template-columns:1fr 1fr}.dt-unit-grid,.dt-ext-grid,.dt-tool-grid{grid-template-columns:1fr}.dt-course-layout{grid-template-columns:1fr}.dt-course-side{position:relative;top:auto;max-height:none}.dt-lessons{display:grid;grid-template-columns:1fr 1fr}.dt-course-shell{width:min(100% - 18px,1460px)}.dt-key-grid,.dt-choice-grid{grid-template-columns:1fr}.dt-lab-row{grid-template-columns:110px 1fr}.dt-lab-row output{grid-column:2}.dt-band{grid-template-columns:1fr}}

/* the old Unit 2 dashboard is retired when the student site is present */
#dashboard,#unitPreview{display:none!important}

/* live 3D model on the blueprint (worlds-v1.js mountHero); the drawing stays as the fallback */
.dt-workbench{min-height:340px;overflow:hidden}
.dt-hero3d{position:absolute;left:0;top:26px;width:100%;height:calc(100% - 26px);display:block;opacity:0;transition:opacity .8s ease}
.dt-workbench.has-3d .dt-hero3d{opacity:1}
.dt-workbench.has-3d svg{opacity:0;transition:opacity .5s}
.dt-workbench .dt-note{z-index:2}
@media(prefers-reduced-motion:reduce){.dt-hero3d{transition:none}}

/* Teachers > Resources */
.dt-resources{margin-top:34px}
.dt-res-list{display:flex;flex-direction:column;gap:22px}
.dt-res-unit-head{display:flex;align-items:baseline;gap:12px;margin:0 0 10px;padding-left:12px;border-left:4px solid var(--accent,var(--navy))}
.dt-res-unit-head span{font:700 .75rem "JetBrains Mono",monospace;letter-spacing:.12em;color:var(--accent,var(--navy));color:color-mix(in srgb,var(--accent,var(--navy)) 55%,#101820)}
.dt-res-unit-head b{font-size:18px;color:var(--navy)}
.dt-res-card{display:grid;grid-template-columns:minmax(260px,420px) 1fr;gap:20px;border:1px solid var(--line);background:#fff;border-radius:12px;padding:16px;box-shadow:0 2px 0 rgba(0,0,0,.03)}
.dt-res-cover{display:block;border-radius:8px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9;background:#0f2a40}
.dt-res-cover img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s}
.dt-res-cover:hover img{transform:scale(1.02)}
.dt-res-body h3{margin:4px 0 6px;font-size:22px;color:var(--navy)}
.dt-res-body p{margin:0 0 10px;color:#53616b;line-height:1.6;font-size:14px}
.dt-res-meta{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.dt-res-meta span{font:600 .75rem "JetBrains Mono",monospace;border:1px solid var(--line);border-radius:999px;padding:4px 9px;color:#476071;background:#f7f9fa}
.dt-res-preview{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px}
.dt-res-preview img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:6px;border:1px solid var(--line)}
.dt-res-credit{display:block;margin-top:10px;color:#566672;font-size:.75rem}
.dt-res-empty{color:#7a8b99}
.dt-hub-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin:0 0 22px;padding:18px 20px;border-radius:12px;background:var(--navy);color:#fff;box-shadow:6px 6px 0 #f3c84b}
.dt-hub-bar:empty{display:none}
.dt-hub-state{display:flex;align-items:center;gap:14px;flex:1 1 320px}
.dt-hub-state b{display:block;font-size:18px}
.dt-hub-state span{color:#c9d7e1;font-size:14px;line-height:1.5}
.dt-hub-icon{flex:none;display:grid;place-items:center;width:44px;height:44px;border-radius:10px;background:#f3c84b;color:var(--navy)!important;font-size:20px}
.dt-hub-state.ok .dt-hub-icon{background:#2e9e66;color:#fff!important}
.dt-hub-form{flex:1 1 340px;display:flex;flex-direction:column;gap:6px}
.dt-hub-form label{font:700 .75rem "JetBrains Mono",monospace;letter-spacing:.12em;text-transform:uppercase;color:#f3c84b}
.dt-hub-row{display:flex;gap:8px}
.dt-hub-row input{flex:1;min-width:0;height:42px;border-radius:8px;border:1px solid #3d6382;background:#0f2a40;color:#fff;padding:0 12px;font:600 15px "JetBrains Mono",monospace;letter-spacing:.06em;text-transform:uppercase}
.dt-hub-row input:focus{outline:2px solid #f3c84b;outline-offset:1px}
.dt-hub-form small{color:#c9d7e1;font-size:12px}
.dt-hub-form small.bad{color:#ffb4a6}
.dt-hub-bar .dt-btn:not(.primary){background:transparent;color:#fff;border-color:#3d6382}
.dt-hub-bar .dt-btn.primary{background:#f3c84b;color:var(--navy);border-color:#f3c84b}
.dt-res-top{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}
.dt-res-badge{font:700 .75rem "JetBrains Mono",monospace;letter-spacing:.06em;border-radius:999px;padding:4px 10px}
.dt-res-badge.free{background:#e3f4ea;color:#1f7a4c}
.dt-res-badge.lock{background:#fff4d6;color:#7a5a00}
.dt-res-badge.ok{background:#e6eefc;color:#2463eb}
.dt-res-cover{position:relative}
.dt-res-card.locked .dt-res-cover img{filter:saturate(.8)}
.dt-res-lock{position:absolute;right:10px;top:10px;display:grid;place-items:center;width:36px;height:36px;border-radius:9px;background:rgba(15,42,64,.85);font-size:16px}
.dt-res-card.locked .dt-res-preview img{filter:blur(2px) saturate(.8);opacity:.8}
a.dt-btn{text-decoration:none;display:inline-flex;align-items:center}
@media(max-width:820px){.dt-res-card{grid-template-columns:1fr}}

/* Share to Classroom / Teams: link-only, no roster sync (see note text wired alongside these buttons) */
.dt-share-classroom,.dt-share-teams{cursor:pointer;font-family:inherit}
.dt-lesson-share{margin-top:16px}
.dt-lesson-share-note{display:block;margin-top:8px;max-width:48ch;color:#7a8b99;font-size:.75rem;line-height:1.5}
.dt-share-toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%);background:var(--navy);color:#fff;padding:12px 18px;border-radius:9px;font-size:13px;font-weight:700;box-shadow:0 6px 18px rgba(0,0,0,.25);z-index:400;max-width:min(90vw,420px);text-align:center;opacity:1;transition:opacity .4s}
.dt-share-toast.out{opacity:0}
@media(max-width:480px){.dt-share-toast{bottom:16px;font-size:12px;padding:10px 14px}}
/* phones: keep the page links reachable as a scrollable row under the brand */
@media(max-width:720px){.dt-nav{height:auto}.dt-nav-inner{height:auto;flex-wrap:wrap;row-gap:6px;padding:8px 0}.dt-actions{margin-left:auto}.dt-links{display:flex!important;order:3;width:100%;margin-left:0;overflow-x:auto;gap:6px;padding-bottom:2px;-webkit-overflow-scrolling:touch}.dt-links .dt-link{flex:none}}
.dt-res-unit-head span{white-space:nowrap}

/* ---------- Primary area: same brand, friendlier skin ---------- */
.dt-prim-hero{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center;padding:46px 0 22px}
.dt-prim-hero h1{font-size:clamp(38px,5vw,62px);line-height:1.02;margin:10px 0 14px;color:var(--navy);letter-spacing:-.02em}
.dt-prim-hero h1 em{font-style:normal;color:#ff9147}
.dt-prim-hero p{font-size:18px;line-height:1.6;color:#455563;max-width:52ch}
.dt-prim-badges{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.dt-prim-dot{border:0;cursor:pointer;text-align:left;background:#fff;border-radius:22px;padding:16px 14px;box-shadow:0 6px 0 var(--pc),0 10px 24px rgba(23,60,89,.08);transition:transform .18s}
.dt-prim-dot:hover{transform:translateY(-3px)}
.dt-prim-dot b{display:grid;place-items:center;width:46px;height:46px;border-radius:50%;background:var(--pc);color:#10283b;font-size:18px;margin-bottom:8px}
.dt-prim-dot span{display:block;font-weight:700;color:var(--navy);font-size:15px;line-height:1.25}
.dt-prim-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.dt-prim-card{background:#fff;border-radius:24px;padding:20px;border:2px solid color-mix(in srgb,var(--pc) 35%,#fff);box-shadow:0 6px 0 color-mix(in srgb,var(--pc) 55%,#fff);display:flex;flex-direction:column}
.dt-prim-top{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:10px}
.dt-prim-year{background:var(--pc);color:#06131e;font-weight:800;border-radius:999px;padding:6px 14px;font-size:14px}
.dt-prim-strand{display:flex;align-items:center;gap:6px;font-size:12px;font-weight:700;color:#5b6b78}
.dt-prim-strand svg{width:18px;height:18px;fill:none;stroke:var(--pc);stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
.dt-prim-card h3{font-size:24px;margin:2px 0 8px;color:var(--navy)}
.dt-prim-card p{font-size:15px;line-height:1.6;color:#4b5a66;margin:0 0 12px}
.dt-prim-make{background:color-mix(in srgb,var(--pc) 12%,#fff);border-radius:14px;padding:10px 12px;font-size:14px;color:var(--navy);margin-bottom:10px}
.dt-prim-make b{display:block;font-size:.75rem;letter-spacing:.1em;text-transform:uppercase;color:#434f59;margin-bottom:2px}
.dt-prim-words{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.dt-prim-words span{font-size:13px;font-weight:700;border-radius:999px;padding:4px 10px;background:#f4f6f8;color:#3c4d5a}
.dt-prim-card .dt-buttons{margin-top:auto}
.dt-prim-card .dt-btn.primary{border-radius:999px}
.dt-prim-band{margin-top:30px}
@media(max-width:980px){.dt-prim-hero{grid-template-columns:1fr}.dt-prim-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.dt-prim-grid{grid-template-columns:1fr}.dt-prim-badges{grid-template-columns:repeat(2,1fr)}}

/* ---------- quizzes and flashcards (dt-quiz.js) ---------- */
.dtq-overlay{position:fixed;inset:0;z-index:10000;background:rgba(9,20,31,.62);backdrop-filter:blur(6px);display:grid;place-items:center;padding:16px}
@keyframes dtqIn{from{opacity:0}to{opacity:1}}
.dtq-card{width:min(640px,100%);max-height:92vh;overflow:auto;background:#fff;border-radius:20px;box-shadow:0 30px 80px rgba(0,0,0,.35),8px 8px 0 #f3c84b;padding:22px 24px;font-family:inherit;color:#1e2a33}
.dtq-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:12px}
.dtq-ey{font:700 .75rem "JetBrains Mono",monospace;letter-spacing:.12em;text-transform:uppercase;color:#2f6fe0}
.dtq-head h2{margin:4px 0 0;font-size:24px;color:#173c59}
.dtq-x{border:0;background:#eef3f6;border-radius:50%;width:36px;height:36px;cursor:pointer;font-size:16px;color:#173c59}
.dtq-prog{height:8px;background:#eef3f6;border-radius:99px;overflow:hidden;margin-bottom:8px}.dtq-prog span{display:block;height:100%;background:#2e9e66;border-radius:99px;transition:width .3s}
.dtq-count{font-size:12px;color:#5b6b78;font-weight:700;margin-bottom:8px}
.dtq-q{font-size:20px;font-weight:800;color:#173c59;line-height:1.35;margin-bottom:14px}
.dtq-opts{display:grid;gap:10px}
.dtq-opt{display:flex;align-items:center;gap:12px;text-align:left;border:2px solid #dbe4ea;background:#fff;border-radius:14px;padding:12px 14px;font:600 16px/1.35 inherit;color:#1e2a33;cursor:pointer;transition:border-color .15s,transform .15s}
.dtq-opt:hover:not(:disabled){border-color:#2f6fe0;transform:translateY(-1px)}
.dtq-opt span{flex:none;display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:#173c59;color:#f3c84b;font-weight:800}
.dtq-opt.ok{border-color:#2e9e66;background:#e8f6ee}.dtq-opt.ok span{background:#2e9e66;color:#fff}
.dtq-opt.bad{border-color:#d14a5b;background:#fcebee}.dtq-opt.bad span{background:#d14a5b;color:#fff}
.dtq-opt:disabled{cursor:default}
.dtq-fb{margin-top:14px;border-radius:14px;padding:12px 14px;font-size:15px;line-height:1.5}
.dtq-fb:empty{display:none}.dtq-fb.ok{background:#e8f6ee;color:#1f5c3e}.dtq-fb.bad{background:#fff4e5;color:#7a4a00}
.dtq-fb .dtq-btn{display:block;margin-top:10px}
.dtq-btn{border:2px solid #173c59;background:#fff;color:#173c59;border-radius:999px;padding:9px 18px;font-weight:800;cursor:pointer;font-size:14px}
.dtq-btn.primary{background:#173c59;color:#fff}.dtq-btn:disabled{opacity:.4;cursor:default}
.dtq-actions{display:flex;gap:10px;justify-content:center;margin-top:16px;flex-wrap:wrap}
.dtq-result{text-align:center;padding:10px 0}
.dtq-result h3{font-size:20px;color:#173c59;margin:14px 0 4px}
.dtq-ring{--p:0;width:140px;height:140px;margin:0 auto;border-radius:50%;background:conic-gradient(#2e9e66 calc(var(--p)*1%),#eef3f6 0);display:grid;place-items:center}
.dtq-ring b{display:grid;place-items:center;width:104px;height:104px;border-radius:50%;background:#fff;font-size:30px;color:#173c59}
.dtq-flash{display:block;width:100%;min-height:210px;border:0;border-radius:18px;background:#173c59;color:#fff;cursor:pointer;position:relative;perspective:800px;padding:0}
.dtq-flash span{position:absolute;inset:0;display:grid;place-items:center;padding:24px;text-align:center;border-radius:18px;transition:opacity .25s,transform .35s;backface-visibility:hidden}
.dtq-flash .front{font-size:30px;font-weight:800;color:#f3c84b}
.dtq-flash .back{font-size:19px;line-height:1.5;background:#fff8e1;color:#173c59;opacity:0;transform:rotateY(180deg)}
.dtq-flash.flipped .front{opacity:0;transform:rotateY(-180deg)}.dtq-flash.flipped .back{opacity:1;transform:none}
@media(max-width:520px){.dtq-card{padding:18px}.dtq-q{font-size:18px}}
/* revision hub */
.dt-rev-tools{display:flex;flex-wrap:wrap;gap:10px;margin:6px 0 22px}
.dt-rev-group{margin-bottom:22px}
.dt-rev-head{display:flex;align-items:baseline;gap:10px;margin-bottom:10px;padding-left:12px;border-left:4px solid var(--accent,#173c59)}
.dt-rev-head span{font:700 .75rem "JetBrains Mono",monospace;letter-spacing:.12em;color:var(--accent,#173c59)}.dt-rev-head b{font-size:18px;color:#173c59}
.dt-rev-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}
.dt-rev-card{background:#fff;border:1px solid #dbe4ea;border-radius:14px;padding:14px;display:flex;flex-direction:column;gap:8px}
.dt-rev-card h4{margin:0;font-size:16px;color:#173c59}
.dt-rev-meta{display:flex;align-items:center;gap:8px;font-size:12px;color:#5b6b78}
.dt-rev-bar{flex:1;height:6px;border-radius:99px;background:#eef3f6;overflow:hidden}.dt-rev-bar i{display:block;height:100%;background:#2e9e66}
.dt-rev-card .dt-buttons{gap:6px}.dt-rev-card .dt-btn{padding:7px 12px;font-size:13px}

.dt-res-card.compact{grid-template-columns:minmax(200px,280px) 1fr}.dt-res-card.compact .dt-res-body h3{font-size:19px}
@media(max-width:820px){.dt-res-card.compact{grid-template-columns:1fr}}
.dt-res-filter{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:6px}.dt-res-filter button{border:1px solid var(--line,#dbe4ea);background:#fff;border-radius:999px;padding:8px 14px;font-weight:700;color:#173c59;cursor:pointer}.dt-res-filter button.on{background:#173c59;color:#fff;border-color:#173c59}.dt-res-filter small{opacity:.7;margin-left:4px}
.dt-res-card.compact .dt-res-cover{aspect-ratio:297/210}
.dt-res-card.compact .dt-res-cover img{object-position:top}

/* licences and buying */
.dt-lic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.dt-lic{background:#fff;border:1px solid var(--line,#dbe4ea);border-radius:16px;padding:20px;display:flex;flex-direction:column;gap:12px;box-shadow:0 6px 0 color-mix(in srgb,var(--lc) 45%,#fff)}
.dt-lic-top span{font:700 .75rem "JetBrains Mono",monospace;letter-spacing:.12em;text-transform:uppercase;color:var(--lc)}
.dt-lic-top h3{margin:4px 0 6px;font-size:22px;color:#173c59}.dt-lic-top b{font-size:15px;color:#5b6b78}
.dt-lic ul{margin:0;padding-left:18px;color:#3c4d5a;line-height:1.7;font-size:14.5px;flex:1}
.dt-lic .dt-btn{align-self:flex-start}
.dt-buy{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:16px;background:#173c59;color:#fff;border-radius:16px;padding:22px 24px;box-shadow:6px 6px 0 #f3c84b}
.dt-buy h3{margin:4px 0 10px;font-size:20px}.dt-buy .dt-mini{color:#f3c84b}
.dt-buy ol,.dt-buy ul{margin:0;padding-left:20px;line-height:1.75;color:#d6e2ea;font-size:14.5px}.dt-buy b{color:#fff}
@media(max-width:900px){.dt-lic-grid,.dt-buy{grid-template-columns:1fr}}

/* home: teacher band and primary promo */
.dt-teach{margin-top:36px;display:grid;grid-template-columns:1.25fr 1fr;gap:22px;align-items:center;background:#fff;border:1px solid var(--line,#e2d9c9);border-radius:14px;padding:26px;box-shadow:8px 8px 0 #d5cbbb}
.dt-teach h2{margin:6px 0 8px;font-size:clamp(24px,3vw,34px);line-height:1.1;color:var(--navy,#17324a)}
.dt-teach p{margin:0 0 14px;color:#5b6b77;line-height:1.55;max-width:58ch}
.dt-teach-stats{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.dt-teach-stats div{background:#f4f1ea;border-radius:12px;padding:16px 18px;border:1px solid #e6dccb}
.dt-teach-stats b{display:block;font-size:34px;line-height:1;color:var(--navy,#17324a);font-weight:900}
.dt-teach-stats span{font-size:13px;color:#5b6b77;font-weight:700}
.dt-prim-promo{margin-top:22px;display:grid;grid-template-columns:1fr auto;gap:18px;align-items:center;border-radius:14px;padding:22px 26px;background:linear-gradient(120deg,#fff6db,#ffe3ec 55%,#dff6f3);border:1px solid #f1dcc0}
.dt-prim-promo h3{margin:6px 0 6px;font-size:22px;color:var(--navy,#17324a)}
.dt-prim-promo p{margin:0;color:#5b6b77;line-height:1.5;max-width:70ch}
@media (max-width:820px){.dt-teach,.dt-prim-promo{grid-template-columns:1fr}}

/* ================= Practice NEA ================= */
.dtn-hero{display:grid;grid-template-columns:1.6fr 1fr;gap:28px;align-items:end;padding:34px 0 22px}
.dtn-hero h1{font-size:clamp(38px,5.4vw,66px);line-height:.95;letter-spacing:-.05em;margin:12px 0 14px;color:var(--navy)}
.dtn-hero p{margin:0 0 14px;color:#4f5d68;line-height:1.6;max-width:62ch}
.dtn-meta{display:grid;gap:8px}.dtn-meta span{font-size:13px;color:#4f5d68;line-height:1.45}.dtn-meta b{display:inline-block;min-width:66px;color:var(--navy);font-weight:800}
.dtn-prog{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;display:grid;gap:12px;box-shadow:6px 6px 0 #ddd3c3}
.dtn-prog small{font-size:.75rem;color:#6b7680;line-height:1.4}
.dtn-ring{--p:0;width:96px;height:96px;border-radius:50%;background:conic-gradient(var(--navy) calc(var(--p)*1%),#ece6da 0);display:grid;place-content:center;text-align:center;position:relative}
.dtn-ring::before{content:"";position:absolute;inset:9px;border-radius:50%;background:#fff}
.dtn-ring b,.dtn-ring span{position:relative}.dtn-ring b{font-size:22px;color:var(--navy);font-weight:900}.dtn-ring span{font-size:.75rem;color:#6b7680;font-weight:700}
.dtn-tools{display:flex;flex-wrap:wrap;gap:8px}.dtn-imp{cursor:pointer}
.dtn-layout{display:grid;grid-template-columns:270px 1fr;gap:22px;align-items:start;padding-bottom:60px}
.dtn-side{position:sticky;top:84px;display:grid;gap:12px;max-height:calc(100vh - 100px);overflow:auto;padding-right:4px}
.dtn-sec{background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px;border-left:4px solid var(--sc)}
.dtn-sec-h{display:grid;grid-template-columns:26px 1fr;align-items:center;gap:2px 8px;padding:4px 4px 8px}
.dtn-sec-h span{grid-row:span 2;width:26px;height:26px;border-radius:8px;background:var(--sc);color:#fff;display:grid;place-items:center;font-weight:900;font-size:13px}
.dtn-sec-h b{font-size:13px;color:var(--navy)}.dtn-sec-h small{font-size:.75rem;color:#7a858e;font-weight:700}
.dtn-step{display:flex;gap:8px;align-items:center;width:100%;text-align:left;background:none;border:0;border-radius:8px;padding:7px 8px;font:600 13px Inter,system-ui,sans-serif;color:#33414c;cursor:pointer}
.dtn-step:hover{background:#f6f2ea}.dtn-step.on{background:color-mix(in srgb,var(--sc) 12%,white);color:var(--navy);font-weight:800}
.dtn-step i{flex:none;width:18px;height:18px;border-radius:50%;border:2px solid #cfc6b6;font-style:normal;font-size:.75rem;display:grid;place-items:center;color:#fff}
.dtn-step.done i{background:#2e9e66;border-color:#2e9e66}
.dtn-main{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px 28px;box-shadow:6px 6px 0 #ddd3c3;min-width:0}
.dtn-step-h span{font:700 .75rem "JetBrains Mono",monospace;letter-spacing:.1em;text-transform:uppercase;color:var(--sc)}
.dtn-step-h h2{margin:6px 0 10px;font-size:clamp(24px,3vw,34px);color:var(--navy);letter-spacing:-.02em}
.dtn-why{font-size:15px;line-height:1.65;color:#3f4c57;margin:0 0 16px;max-width:75ch}
.dtn-look{background:#f6f2ea;border-radius:12px;padding:14px 18px;margin-bottom:16px}.dtn-look b{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:#6b5a2e}
.dtn-look ul{margin:8px 0 0;padding-left:18px}.dtn-look li{font-size:14px;color:#3f4c57;margin:4px 0;line-height:1.45}
.dtn-interview{border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-bottom:16px;max-height:340px;overflow:auto}
.dtn-interview>b{display:block;margin-bottom:8px;color:var(--navy)}
.dtn-interview p{margin:6px 0;font-size:14px;line-height:1.5;display:grid;grid-template-columns:22px 1fr;gap:8px;color:#33414c}
.dtn-interview p span{width:22px;height:22px;border-radius:6px;background:var(--navy);color:#fff;font-size:.75rem;font-weight:900;display:grid;place-items:center}
.dtn-interview p.a{color:#4f5d68;margin-bottom:12px}.dtn-interview p.a span{background:var(--yellow);color:#272217}
.dtn-lab{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center;background:linear-gradient(120deg,#16344c,#1f4f6e);color:#fff;border-radius:14px;padding:16px 18px;margin-bottom:18px}
.dtn-lab b{font:700 .75rem "JetBrains Mono",monospace;letter-spacing:.1em;text-transform:uppercase;color:var(--yellow)}
.dtn-lab p{margin:6px 0 0;font-size:14px;line-height:1.5;color:#dbe6ee}
.dtn-lab-b{display:flex;flex-direction:column;gap:8px}
.dtn-task{border:2px solid #ece6da;border-radius:14px;padding:16px 18px;margin-bottom:16px}
.dtn-task-h{display:block;font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:var(--navy);margin-bottom:8px}
.dtn-p{font-size:14px;color:#4f5d68;margin:0 0 12px;line-height:1.5}.dtn-p a{color:#2463eb;font-weight:700}
.dtn-field{display:grid;gap:6px;margin-bottom:12px}.dtn-field span{font-size:13px;font-weight:800;color:#33414c}
.dtn-main textarea,.dtn-main input,.dtn-main select{font:14px/1.45 Inter,system-ui,sans-serif;color:#1e2a33;border:1px solid #d8d0c2;border-radius:9px;padding:9px 11px;background:#fffdf9;width:100%;box-sizing:border-box;resize:vertical;min-width:0}
.dtn-main textarea:focus,.dtn-main input:focus,.dtn-main select:focus{outline:2px solid #2463eb;outline-offset:1px;border-color:#2463eb}
.dtn-grid{display:grid;grid-template-columns:180px 1fr;gap:8px;align-items:start}.dtn-grid.multi{grid-template-columns:130px repeat(3,1fr)}
.dtn-gl{font-size:13px;font-weight:800;color:#33414c;padding-top:10px}.dtn-gh{font-size:.75rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:#6b7680}
.dtn-spec{display:grid;gap:10px}
.dtn-spec-r{display:grid;grid-template-columns:140px 1.6fr 1fr 30px;gap:8px;align-items:start;padding:10px;border-radius:10px;background:#faf7f1}
.dtn-rate{grid-column:2/4;font-size:12.5px;font-weight:700;min-height:0}.dtn-spec-r>.dtn-x{grid-column:4;grid-row:1}.dtn-rate.ok{color:#1f8a52}.dtn-rate.bad{color:#b4472e}
.dtn-x{width:30px;height:30px;border-radius:8px;border:1px solid #e3d9c8;background:#fff;color:#8a7a63;font-size:18px;line-height:1;cursor:pointer}
.dtn-x:hover{background:#fbe9e4;color:#b4472e}
.dtn-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:12px}
.dtn-sum{font-size:13px;color:#4f5d68;margin:0}.dtn-sum.ok b{color:#1f8a52}.dtn-sum.bad b{color:#b4472e}
.dtn-ideas{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px}
.dtn-idea{display:grid;gap:8px;background:#faf7f1;border-radius:12px;padding:12px}.dtn-idea b{font-size:12px;color:#8b5cf6;text-transform:uppercase;letter-spacing:.06em}
.dtn-ann{font-size:12.5px;font-weight:700;border-radius:8px;padding:0}.dtn-ann.lv1,.dtn-ann.lv2,.dtn-ann.lv3{padding:7px 9px}
.dtn-ann.lv1{background:#fbe9e4;color:#a2402a}.dtn-ann.lv2{background:#fff3d6;color:#7a5a0a}.dtn-ann.lv3{background:#dcf3e6;color:#1b7a48}
.dtn-mx-wrap{overflow-x:auto}
.dtn-mx{border-collapse:collapse;width:100%;font-size:13px;min-width:560px}
.dtn-mx th,.dtn-mx td{border:1px solid #ece6da;padding:6px;text-align:center}.dtn-mx th{background:#f6f2ea;color:var(--navy);font-size:12px}
.dtn-mx td:first-child{min-width:170px}.dtn-mx select{padding:6px;min-width:52px}
.dtn-mx tfoot td{font-weight:900;color:var(--navy);font-size:15px}.dtn-mx tfoot td.win{background:#dcf3e6;color:#1b7a48}
.dtn-log{display:grid;gap:10px}
.dtn-log-r{display:grid;grid-template-columns:28px repeat(3,1fr) 30px;gap:8px;align-items:start;background:#faf7f1;padding:10px;border-radius:10px}
.dtn-log-r>b,.dtn-plan-r>b{width:26px;height:26px;border-radius:8px;background:var(--navy);color:#fff;display:grid;place-items:center;font-size:12px}
.dtn-plan,.dtn-cut,.dtn-tol{display:grid;gap:8px}
.dtn-plan-h,.dtn-plan-r{display:grid;grid-template-columns:28px 1.3fr 1fr 1fr 70px 30px;gap:8px;align-items:start}
.dtn-cut-h,.dtn-cut-r{display:grid;grid-template-columns:1.4fr 60px 1fr 1.2fr 30px;gap:8px;align-items:center}
.dtn-tol-h,.dtn-tol-r{display:grid;grid-template-columns:1.2fr 90px 100px 1.6fr 30px;gap:8px;align-items:center}
.dtn-plan-h span,.dtn-cut-h span,.dtn-tol-h span{font-size:.75rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:#6b7680}
.dtn-eval{display:grid;gap:10px}
.dtn-eval-r{display:grid;grid-template-columns:1.3fr auto 1.2fr;gap:12px;align-items:center;background:#faf7f1;border-radius:10px;padding:12px}
.dtn-eval-r small{display:block;font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;color:#7a858e;font-weight:800}
.dtn-eval-r b{display:block;font-size:13.5px;color:#1e2a33;line-height:1.4}.dtn-eval-r em{display:block;font-size:12px;color:#6b7680;margin-top:3px}
.dtn-seg{display:flex;border:1px solid #d8d0c2;border-radius:9px;overflow:hidden}
.dtn-seg button{border:0;background:#fff;padding:8px 10px;font:700 12px Inter,system-ui,sans-serif;color:#4f5d68;cursor:pointer;white-space:nowrap}
.dtn-seg button+button{border-left:1px solid #d8d0c2}
.dtn-seg button.on.met{background:#2e9e66;color:#fff}.dtn-seg button.on.partlymet{background:#e0a800;color:#272217}.dtn-seg button.on.notmet{background:#d94d4d;color:#fff}
.dtn-tl{display:grid;gap:8px}
.dtn-tl-r{position:relative;display:grid;grid-template-columns:1fr 90px;gap:10px;align-items:center;padding:10px 12px;border-radius:10px;background:#faf7f1;overflow:hidden}
.dtn-tl-r span{position:relative;z-index:1;font-size:14px;color:#1e2a33}.dtn-tl-r span b{display:inline-grid;place-items:center;width:22px;height:22px;border-radius:6px;background:var(--sc);color:#fff;font-size:12px;margin-right:6px}
.dtn-tl-r small{margin-left:8px;color:#7a858e;font-size:12px}.dtn-tl-r input{position:relative;z-index:1}
.dtn-tl-r i{position:absolute;left:0;top:0;bottom:0;background:color-mix(in srgb,var(--sc) 13%,transparent)}
.dtn-chk{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:#33414c;padding:5px 0;cursor:pointer}
.dtn-chk input{width:18px!important;height:18px;flex:none;margin-top:1px;accent-color:#2e9e66}
.dtn-ex{border:1px dashed #cdbf9f;border-radius:12px;padding:12px 16px;margin-bottom:16px;background:#fffbf0}
.dtn-ex summary{cursor:pointer;font-weight:800;color:#6b5a2e;font-size:14px}
.dtn-ex p{font-size:14px;line-height:1.6;color:#3f4c57;margin:10px 0 6px}.dtn-ex small{font-size:12px;color:#8a7a63}
.dtn-self{background:#f2f8f4;border-radius:12px;padding:14px 18px;margin-bottom:18px}.dtn-self>b{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:#1b7a48}
.dtn-band{display:inline-block;font:800 .75rem/1 "JetBrains Mono",monospace;text-transform:uppercase;letter-spacing:.04em;padding:3px 8px;border-radius:999px;margin-top:2px}
.dtn-band.dev{background:#fbe9e4;color:#a2402a}.dtn-band.sec{background:#fff3d6;color:#7a5a0a}.dtn-band.str{background:#dcf3e6;color:#1b7a48}
.dtn-coach{background:#eef3fb;border:1px solid #cfdcee;border-radius:14px;padding:16px 18px;margin-bottom:18px}
.dtn-coach-h{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:6px}
.dtn-coach-h b{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:#1f4f6e}
.dtn-coach-note{font-size:12.5px;color:#4f5d68;line-height:1.5;margin:0 0 10px;font-style:italic}
.dtn-coach ul{margin:6px 0 0;padding-left:18px}.dtn-coach li{font-size:13.5px;color:#33414c;margin:5px 0;line-height:1.45}
.dtn-doc .dtn-notice{background:#fff7d6;border:1px solid #e7cb6c;border-radius:10px;padding:10px 14px;font-size:12px;color:#6b5a2e;margin:12px 0 18px}
.dtn-doc .dtn-bandtable td:first-child{font-weight:800;color:#16344c}
.dtn-nav{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;align-items:center;border-top:1px solid #ece6da;padding-top:16px}
.dtn-chip{position:fixed;left:50%;transform:translateX(-50%);top:84px;z-index:2147483000;display:flex;align-items:center;gap:10px;background:var(--yellow,#f3c84b);color:#272217;border:2px solid #16344c;border-radius:999px;padding:8px 18px 8px 10px;box-shadow:0 8px 24px rgba(0,0,0,.35);cursor:pointer;font-family:Inter,system-ui,sans-serif;text-align:left}
.dtn-chip span{width:28px;height:28px;border-radius:50%;background:#16344c;color:#fff;display:grid;place-items:center;font-weight:900}
.dtn-chip small{display:block;font-size:.75rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;opacity:.75}.dtn-chip b{font-size:13px}
.dtn-port{position:fixed;inset:0;z-index:2147483100;background:#e9e4da;overflow:auto;font-family:Inter,system-ui,sans-serif}
.dtn-port-bar{position:sticky;top:0;display:flex;gap:12px;align-items:center;flex-wrap:wrap;background:#16344c;color:#fff;padding:12px 20px;z-index:2}
.dtn-port-bar span{font-size:12px;color:#c9d7e1;margin-right:auto}
.dtn-doc{max-width:900px;margin:24px auto 60px;background:#fff;padding:40px 46px;box-shadow:0 6px 30px rgba(0,0,0,.12);color:#1e2a33}
.dtn-doc header{border-bottom:3px solid #16344c;padding-bottom:14px;margin-bottom:10px}.dtn-doc header small{font:700 .75rem "JetBrains Mono",monospace;letter-spacing:.1em;text-transform:uppercase;color:#6b7680}
.dtn-doc h1{font-size:36px;margin:6px 0;color:#16344c}.dtn-doc header p{margin:0;font-size:13px;line-height:1.6}
.dtn-doc section{margin-top:22px;break-inside:auto}
.dtn-doc h2{display:flex;align-items:center;gap:10px;font-size:20px;color:#16344c;border-bottom:2px solid var(--sc);padding-bottom:6px;margin:0 0 10px}
.dtn-doc h2 span{width:28px;height:28px;border-radius:7px;background:var(--sc);color:#fff;display:grid;place-items:center;font-size:14px}.dtn-doc h2 small{margin-left:auto;font-size:12px;color:#7a858e}
.dtn-doc h3{font-size:15px;margin:14px 0 6px;color:#16344c}.dtn-doc h4{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:#6b7680;margin:10px 0 4px}
.dtn-doc p{font-size:13px;line-height:1.55;margin:0 0 8px}.dtn-doc p.note{color:#9a8d78;font-style:italic}
.dtn-doc table{border-collapse:collapse;width:100%;font-size:12px;margin:6px 0 10px}.dtn-doc th,.dtn-doc td{border:1px solid #ddd5c6;padding:6px 8px;text-align:left;vertical-align:top}.dtn-doc th{background:#f6f2ea}
.dtn-doc footer{margin-top:30px;border-top:1px solid #ddd5c6;padding-top:10px;font-size:.75rem;color:#8a7a63}
.dtn-doc-step{break-inside:avoid}
@page{margin:14mm}
@media print{
  body.dtn-printing>*:not(.dtn-port){display:none!important}
  body.dtn-printing .dtn-port{position:static;overflow:visible;background:#fff}
  body.dtn-printing .dtn-port-bar{display:none}
  body.dtn-printing .dtn-doc{box-shadow:none;margin:0;max-width:none;padding:0}
  html,body.dtn-printing{overflow:visible!important;height:auto!important;background:#fff!important}
}
@media (max-width:960px){
  .dtn-hero{grid-template-columns:1fr}.dtn-layout{grid-template-columns:1fr}
  .dtn-side{position:static;max-height:none;grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}
  .dtn-lab{grid-template-columns:1fr}.dtn-lab-b{flex-direction:row;flex-wrap:wrap}
}
@media (max-width:640px){
  .dtn-main{padding:18px 16px}
  .dtn-side{grid-template-columns:1fr}
  .dtn-grid,.dtn-grid.multi{grid-template-columns:1fr}.dtn-gh{display:none}
  .dtn-spec-r{grid-template-columns:1fr 30px}.dtn-spec-r select{grid-column:1}.dtn-spec-r textarea{grid-column:1}.dtn-rate{grid-column:1}.dtn-spec-r .dtn-x{grid-column:2;grid-row:1}
  .dtn-log-r{grid-template-columns:28px 1fr 30px}.dtn-log-r textarea{grid-column:2}
  .dtn-plan-h,.dtn-cut-h,.dtn-tol-h{display:none}
  .dtn-plan-r{grid-template-columns:28px 1fr 30px}.dtn-plan-r textarea,.dtn-plan-r input{grid-column:2}
  .dtn-cut-r,.dtn-tol-r{grid-template-columns:1fr 30px}.dtn-cut-r input,.dtn-tol-r input{grid-column:1}
  .dtn-eval-r{grid-template-columns:1fr}
  .dtn-doc{padding:22px 18px}
}
/* NEA: own checkbox style (the page can inherit a dark colour scheme from the 3D lab) */
.dtn-main,.dtn-port{color-scheme:light}
.dtn-chk input{appearance:none;-webkit-appearance:none;width:20px!important;height:20px;border:2px solid #b9ad97;border-radius:6px;background:#fff;display:grid;place-items:center;cursor:pointer;padding:0!important;margin:0}
.dtn-chk input:checked{background:#2e9e66;border-color:#2e9e66}
.dtn-chk input:checked::after{content:"";width:5px;height:10px;border:solid #fff;border-width:0 2.5px 2.5px 0;transform:translate(0,-1px) rotate(45deg)}
.dtn-chk input:focus-visible{outline:2px solid #2463eb;outline-offset:2px}
.dtn-swipe{display:none;font-size:12px;color:#7a858e;margin:0 0 6px}
@media (max-width:760px){.dtn-swipe{display:block}}
/* phone menu: subject and tool links scroll horizontally instead of crushing seven labels */
@media (max-width:720px){.dt-links{gap:2px!important;justify-content:flex-start;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}.dt-links::-webkit-scrollbar{display:none}.dt-links{-webkit-mask-image:linear-gradient(90deg,#000 88%,transparent);mask-image:linear-gradient(90deg,#000 88%,transparent);padding-right:18px!important}.dt-links .dt-link{flex:0 0 auto;padding:7px 7px;font-size:.75rem}}
@media (max-width:380px){.dt-links .dt-link{padding:6px 5px;font-size:.75rem}}

/* subject gateways: Graphics + Food use their own visual language without breaking the DT dashboard */
.dt-subject-promo{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:28px}.dt-subject-promo article{position:relative;min-height:235px;border:1px solid var(--line);border-radius:13px;padding:22px 230px 22px 22px;overflow:hidden;box-shadow:6px 6px 0 #d7cebf;background:#fff}.dt-subject-promo h3{margin:6px 0 7px;color:var(--navy);font-size:22px;letter-spacing:-.035em;line-height:1.04}.dt-subject-promo p{margin:0 0 16px;color:#64717a;font-size:.75rem;line-height:1.55}.dt-subject-promo .graphics{background:linear-gradient(135deg,#fffdf8 0,#f4f0e8 66%)}.dt-subject-promo .food{background:linear-gradient(135deg,#fffdf8 0,#eef4ef 72%)}.dt-subject-promo .dt-subject-art{position:absolute;right:0;top:0;bottom:0;width:210px;overflow:hidden}.dt-subject-promo .graphics .dt-subject-art{background:#f3c84b}.dt-subject-promo .graphics .dt-subject-art>b{position:absolute;left:22px;top:36px;font-size:39px;line-height:.9;letter-spacing:-.06em;color:#172f46}.dt-subject-promo .graphics .dt-subject-art>i{position:absolute;left:22px;right:54px;bottom:45px;height:9px;background:#172f46}.dt-subject-promo .graphics .dt-subject-art>span{position:absolute;right:20px;bottom:25px;font-size:48px;font-weight:900;color:#ef735a}.dt-subject-promo .food .dt-subject-art{background:#25483f}.dt-subject-promo .food .dt-subject-art i{position:absolute;border-radius:50%;width:72px;height:72px;background:#80a78f}.dt-subject-promo .food .dt-subject-art i:nth-child(1){left:22px;top:26px}.dt-subject-promo .food .dt-subject-art i:nth-child(2){right:20px;top:72px;background:#eabf52}.dt-subject-promo .food .dt-subject-art i:nth-child(3){left:70px;bottom:35px;background:#d86f4c}.dt-subject-promo .food .dt-subject-art>b{position:absolute;right:17px;bottom:14px;color:#fff;font:800 .75rem "JetBrains Mono",monospace;letter-spacing:.1em}
@media(max-width:980px){.dt-subject-promo{grid-template-columns:1fr}.dt-subject-promo article{padding-right:210px}}@media(max-width:600px){.dt-subject-promo article{padding:18px 18px 150px}.dt-subject-promo .dt-subject-art{left:0;right:0;top:auto;width:auto;height:132px}}

/* STEM Racing enrichment band */
.dt-enrich{display:grid;grid-template-columns:1.1fr 1fr;gap:0;margin-top:14px;border-radius:13px;overflow:hidden;background:#0d1720;color:#eef3f7;box-shadow:6px 6px 0 #d7cebf}.dt-enrich-copy{padding:26px}.dt-enrich .dt-mini{color:#f3c84b}.dt-enrich h3{color:#fff;font-size:clamp(22px,2.6vw,30px);margin:8px 0}.dt-enrich p{color:#b7c4cf;line-height:1.55;max-width:560px}.dt-enrich-tags{display:flex;flex-wrap:wrap;gap:6px;margin:14px 0 18px}.dt-enrich-tags span{font-size:12px;font-weight:700;padding:5px 9px;border-radius:999px;background:rgba(255,255,255,.08);color:#dfe8ef}.dt-enrich-art{min-height:240px;background:#15222d url(/resources/stem-racing/pit-lane.jpg) center/cover no-repeat}@media(max-width:800px){.dt-enrich{grid-template-columns:1fr}.dt-enrich-art{min-height:180px;order:-1}}

.dt-projects{margin-top:28px}.dt-projects h3{margin:4px 0 12px;font-size:clamp(20px,2.4vw,28px);letter-spacing:-.02em}
.dt-proj-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px}
.dt-proj{display:grid;gap:4px;align-content:start;border:1px solid var(--line);border-radius:13px;padding:18px 20px;background:#fff;box-shadow:6px 6px 0 #d7cebf;color:inherit;text-decoration:none}
.dt-proj b{font-size:20px}.dt-proj span{font:700 .75rem ui-monospace,Menlo,Consolas,monospace;letter-spacing:.1em;text-transform:uppercase;opacity:.7}
.dt-proj p{margin:6px 0;opacity:.85}.dt-proj i{font-style:normal;font-weight:800}
.dt-proj:hover,.dt-proj:focus-visible{transform:translate(-2px,-2px);box-shadow:8px 8px 0 #d7cebf}
@media(max-width:700px){.dt-proj-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){.dt-proj:hover{transform:none}}

.dt-res-tools{display:flex;flex-wrap:wrap;gap:12px;align-items:end;margin:10px 0 14px}.dt-res-tools label{display:grid;gap:3px;font:700 12px system-ui;color:inherit}.dt-res-tools select,.dt-res-tools input{border:1px solid var(--line,#dbe4ea);border-radius:9px;padding:8px 10px;background:#fff;font:600 14px system-ui;min-width:150px}.dt-res-count{font:700 12px ui-monospace,Menlo,Consolas,monospace;opacity:.75;padding-bottom:9px}

.dt-ts-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.dt-ts-grid .dt-tool{display:flex;flex-direction:column;min-height:0}.dt-ts-grid .dt-tool .dt-btn{margin-top:auto;align-self:flex-start}.dt-ts-grid .dt-tool p{margin-bottom:14px}@media(max-width:1000px){.dt-ts-grid{grid-template-columns:1fr 1fr}}@media(max-width:560px){.dt-ts-grid{grid-template-columns:1fr}}

/* ===== Home page: clean layout, audience choice, header toggle, footer, skeletons (audience / loader work) ===== */
.dt-sr{position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.dt-gtag,.dt-do-tile em{display:inline-block;margin-left:6px;padding:1px 6px;border-radius:999px;background:#e9e3d5;color:#5b5543;font:800 .75rem/1.5 "JetBrains Mono",monospace;letter-spacing:.06em;font-style:normal;vertical-align:middle;text-transform:uppercase}
.dt-link.dim{opacity:.62}.dt-link.dim:hover,.dt-link.dim.active{opacity:1}
/* header Primary | Secondary toggle */
.dt-aud{display:inline-flex;border:1px solid var(--line);border-radius:9px;background:#fff;padding:2px;gap:2px;align-self:center}
.dt-aud button{border:0;background:transparent;border-radius:7px;padding:7px 10px;font:800 .75rem Inter,system-ui,sans-serif;color:#43515d;cursor:pointer;min-height:32px}
.dt-aud button[aria-pressed=true]{background:var(--navy);color:#fff}
.dt-aud button:focus-visible,.dt-pick-b:focus-visible,.dt-choose-card:focus-visible,.dt-do-tile:focus-visible,.dt-pm:focus-visible,.dt-textbtn:focus-visible,.dt-linkbtn:focus-visible,.dt-foot a:focus-visible,.dt-foot button:focus-visible,.dt-more summary:focus-visible{outline:3px solid #2463eb;outline-offset:2px}
/* hero: one call to action, two quiet links, then the audience picker */
.dt-home .dt-hero{padding:34px 0 18px}
.dt-home .dt-hero h1{max-width:12ch}
.dt-cta{display:flex;flex-wrap:wrap;align-items:center;gap:6px 18px;margin-top:22px}
.dt-btn.big{padding:14px 22px;font-size:14px;border-radius:11px}
.dt-linkbtn{border:0;background:transparent;color:var(--navy);font:800 13px Inter,system-ui,sans-serif;text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--yellow);text-decoration-thickness:3px;padding:8px 2px;cursor:pointer}
.dt-pick{display:flex;flex-wrap:wrap;align-items:stretch;gap:8px;margin-top:24px}
.dt-pick-lab{flex:0 0 100%;font:700 .75rem "JetBrains Mono",monospace;letter-spacing:.12em;text-transform:uppercase;color:#53616b}
.dt-pick-b{display:flex;flex-direction:column;gap:1px;text-align:left;border:1.5px solid var(--line);background:#fff;border-radius:11px;padding:9px 14px;color:var(--navy);cursor:pointer;text-decoration:none;font-family:Inter,system-ui,sans-serif;min-height:44px;box-shadow:2px 2px 0 #d7cebf}
.dt-pick-b b{font-size:14px}.dt-pick-b small{font-size:.75rem;color:#66727b;font-weight:600}
.dt-pick-b[aria-pressed=true]{border-color:var(--navy);background:var(--navy);color:#fff}.dt-pick-b[aria-pressed=true] small{color:#c9d6e0}
.dt-pick-b:hover{transform:translateY(-1px)}
.dt-pick-t{border-style:dashed;box-shadow:none}
.dt-workbench[data-wb]:before{content:attr(data-wb)}
.dt-workbench.prim{border-radius:26px;border-width:3px;background-color:#fff7e1}
.dt-workbench.prim .dt-note{border-radius:14px;font-size:13px}
.dt-hero.prim h1 em{text-decoration-color:#ff9147}
.dt-home.dt-primary .dt-hero p{font-size:17px;line-height:1.6}
.dt-home.dt-primary .dt-btn.big{border-radius:999px;font-size:15px;padding:15px 26px}
/* first-visit choice: friendly, not a wall (it sits in the page and can be skipped) */
.dt-choose{margin:22px 0 4px;padding:24px;border-radius:20px;background:linear-gradient(135deg,#fff6db,#e4f1ff 60%,#e6f6ec);border:2px solid #f0dcae;box-shadow:0 6px 0 #ecdcb4}
.dt-choose-head h2{margin:0 0 4px;font-size:clamp(24px,3.4vw,34px);letter-spacing:-.03em;color:var(--navy)}
.dt-choose-head p{margin:0 0 16px;color:#4b5a66;font-size:15px;max-width:62ch;line-height:1.55}
.dt-choose-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.dt-choose-card{display:flex;flex-direction:column;gap:3px;text-align:left;background:#fff;border:2px solid var(--navy);border-radius:20px;padding:14px 14px 18px;cursor:pointer;color:var(--navy);font-family:Inter,system-ui,sans-serif;box-shadow:0 5px 0 rgba(22,52,76,.25);transition:transform .15s,box-shadow .15s}
.dt-choose-card:hover{transform:translateY(-3px);box-shadow:0 9px 0 rgba(22,52,76,.25)}
.dt-choose-card.prim{border-color:#e08a1e}
.dt-choose-card svg{width:100%;height:auto;max-height:150px;border-radius:12px;margin-bottom:8px}
.dt-choose-card b{font-size:26px;letter-spacing:-.03em;padding:0 6px}.dt-choose-card span{font-size:14px;color:#52616c;padding:0 6px;font-weight:600}.dt-choose-card i{font-style:normal;font-weight:800;font-size:14px;padding:8px 6px 0;color:#2463eb}
.dt-choose-foot{display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center;justify-content:space-between;margin-top:16px;font-size:14px}
.dt-choose-foot a{color:var(--navy);font-weight:700}
.dt-textbtn{border:1.5px solid var(--navy);background:#fff;color:var(--navy);border-radius:999px;padding:9px 18px;font:800 13px Inter,system-ui,sans-serif;cursor:pointer;min-height:40px}
/* what you can do here */
.dt-do{margin:14px 0 8px}
.dt-do-h{margin:0 0 10px;font:700 .75rem "JetBrains Mono",monospace;letter-spacing:.14em;text-transform:uppercase;color:#5b5d58}
.dt-do-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:10px}
.dt-do-tile{display:flex;flex-direction:column;gap:4px;text-align:left;border:1px solid var(--line);background:#fff;border-radius:12px;padding:14px;color:var(--navy);cursor:pointer;text-decoration:none;font-family:Inter,system-ui,sans-serif;box-shadow:3px 3px 0 #ddd4c4;min-height:112px}
.dt-do-tile:hover{transform:translate(-1px,-1px);box-shadow:5px 5px 0 #ddd4c4}
.dt-do-tile b{font-size:15px}.dt-do-tile>span:last-child{font-size:12px;line-height:1.4;color:#62707a}
.dt-do-ico{width:30px;height:30px;border-radius:8px;background:#eef1f2;display:grid;place-items:center;margin-bottom:4px}
.dt-do-ico svg{width:20px;height:20px;fill:none;stroke:var(--navy);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.dt-do-tile.gcse{background:#faf8f2}
/* sections */
.dt-home-sec{margin-top:52px}
.dt-home .dt-section-head{margin:0 0 14px}.dt-home .dt-section-head h2{font-size:28px}
.dt-group{margin-top:22px}.dt-group:first-of-type{margin-top:0}
.dt-group h3{margin:0 0 10px;font-size:15px;color:var(--navy);letter-spacing:-.01em;display:flex;flex-wrap:wrap;gap:2px 12px;align-items:baseline}
.dt-group h3 span{font-size:12px;font-weight:500;color:#76818a}
.dt-home .dt-unit{min-height:0}
.dt-home .dt-unit-grid{gap:12px}
.dt-home .dt-topic-preview{display:none}
.dt-home .dtp-banner{margin:22px 0 0}
.dt-pm-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.dt-pm{display:flex;flex-direction:column;gap:6px;text-align:left;background:#fff;border:2px solid color-mix(in srgb,var(--pc) 40%,#fff);border-radius:20px;padding:16px;cursor:pointer;color:var(--navy);font-family:Inter,system-ui,sans-serif;box-shadow:0 5px 0 color-mix(in srgb,var(--pc) 55%,#fff);transition:transform .15s}
.dt-pm:hover{transform:translateY(-2px)}
.dt-pm-y{font:800 .75rem "JetBrains Mono",monospace;letter-spacing:.08em;text-transform:uppercase;color:color-mix(in srgb,var(--pc) 70%,#000)}
.dt-pm b{font-size:20px;line-height:1.15}.dt-pm-s{font-size:13px;line-height:1.5;color:#52616c}.dt-pm i{margin-top:auto;padding-top:6px;font-style:normal;font-weight:800;font-size:13px;color:#2463eb}
.dt-honest{margin:18px 0 0;padding:12px 16px;border-radius:12px;background:#fff;border:1px dashed #cfc5b0;color:#53616b;font-size:13.5px;line-height:1.55;max-width:84ch}
.dt-more{margin-top:34px;border:1px solid var(--line);border-radius:14px;background:#fffdf7;padding:4px 18px 18px}
.dt-more summary{cursor:pointer;font-weight:800;color:var(--navy);padding:14px 0;font-size:15px;list-style-position:inside}
.dt-more-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.dt-subj{border:1px solid var(--line);background:#fff;border-radius:13px;padding:18px 20px;box-shadow:4px 4px 0 #ddd4c4;display:flex;flex-direction:column;gap:2px;align-items:flex-start}
.dt-subj h3{margin:4px 0 4px;font-size:19px;color:var(--navy);letter-spacing:-.02em}.dt-subj p{margin:0 0 12px;font-size:13px;line-height:1.5;color:#5b6b77}.dt-subj .dt-btn{margin-top:auto}
.dt-subj.graphics{border-top:5px solid #2f6fe0}.dt-subj.food{border-top:5px solid #d86f4c}.dt-subj.racing{border-top:5px solid #ef7a3a}
.dt-home .dt-projects{margin-top:26px}.dt-home .dt-projects h3{font-size:17px;margin:0 0 10px}
.dt-home .dt-proj-grid{grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:10px}
.dt-home .dt-proj{padding:13px 15px;box-shadow:3px 3px 0 #ddd4c4;border-radius:11px}
.dt-home .dt-proj b{font-size:15px}.dt-home .dt-proj span{font-size:.75rem}.dt-home .dt-proj p{font-size:12.5px;line-height:1.45;margin:4px 0 0;color:#5b6b77}
.dt-slim{margin-top:40px}
.dt-teach.dt-slim{grid-template-columns:1fr;padding:24px 26px;box-shadow:6px 6px 0 #d5cbbb}.dt-teach.dt-slim h2{font-size:26px;margin:4px 0 8px}
.dt-prim-promo.dt-slim{padding:18px 24px}
/* teachers page: sign-in card */
.dt-tacct{display:flex;flex-wrap:wrap;gap:16px 28px;align-items:center;justify-content:space-between;margin:22px 0 4px;padding:22px 26px;border-radius:14px;background:var(--navy);color:#fff;border:2px solid var(--navy);box-shadow:6px 6px 0 var(--yellow)}
.dt-tacct h2{margin:2px 0 6px;font-size:clamp(22px,2.6vw,30px);letter-spacing:-.03em}.dt-tacct p{margin:0;max-width:62ch;font-size:14px;line-height:1.55;color:#d4e0ea}.dt-tacct .dt-mini{color:#f4c84a}
.dt-tacct-act{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.dt-tacct-act .dt-btn{text-decoration:none;display:inline-block;padding:12px 18px;font-size:13px}
.dt-tacct-who{flex:0 0 100%;font-size:13px;color:#f4c84a;font-weight:700;overflow-wrap:anywhere}
/* footer */
.dt-foot{border-top:1px solid var(--line);background:#ece6d9;margin-top:20px}
.dt-foot-inner{width:min(1440px,calc(100% - 40px));margin:0 auto;padding:28px 0 36px;display:flex;flex-wrap:wrap;gap:18px 40px;justify-content:space-between;align-items:center}
.dt-foot-brand{display:flex;gap:12px;align-items:center;max-width:46ch}.dt-foot-brand .dt-logo{flex:none;width:36px;height:36px;box-shadow:3px 3px 0 var(--yellow)}
.dt-foot-brand b{display:block;color:var(--navy);font-size:15px}.dt-foot-brand span{font-size:12.5px;line-height:1.45;color:#47565f}
.dt-foot nav{display:flex;flex-wrap:wrap;gap:6px 20px;align-items:center}
.dt-foot a,.dt-foot button{color:var(--navy);font:700 13px Inter,system-ui,sans-serif;text-decoration:underline;text-underline-offset:3px;background:none;border:0;padding:8px 0;cursor:pointer;min-height:36px}
.dt-foot-soon{font-size:13px;color:#7a7f78}
/* skeletons and route bar */
.dt-skel{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:18px 0}
.dt-skel-card{height:190px;border:1px solid var(--line);border-radius:12px;background:#fff;padding:16px;display:flex;flex-direction:column;gap:12px}
.dt-skel-card i{display:block;height:14px;border-radius:7px;background:linear-gradient(90deg,#ece6d9 25%,#f7f3ea 50%,#ece6d9 75%);background-size:200% 100%;animation:dtShim 1.3s linear infinite}
.dt-skel-card i:first-child{width:45%;height:18px}.dt-skel-card i:nth-child(2){width:90%}.dt-skel-card i:nth-child(3){width:70%}
@keyframes dtShim{to{background-position:-200% 0}}
.dt-route{position:fixed;left:0;top:0;height:3px;width:100%;z-index:3000;background:linear-gradient(90deg,var(--yellow),var(--orange));transform-origin:left;animation:dtRoute 8s cubic-bezier(.1,.6,.2,1) forwards}
@keyframes dtRoute{from{transform:scaleX(.05)}to{transform:scaleX(.92)}}
@media(prefers-reduced-motion:reduce){.dt-skel-card i{animation:none}.dt-route{animation:none;transform:scaleX(.6)}.dt-choose-card,.dt-pm,.dt-do-tile,.dt-pick-b{transition:none}.dt-choose-card:hover,.dt-pm:hover,.dt-do-tile:hover,.dt-pick-b:hover{transform:none}}
html[data-dta-motion=reduce] .dt-skel-card i{animation:none}html[data-dta-motion=reduce] .dt-route{animation:none;transform:scaleX(.6)}
html[data-dta-motion=reduce] .dt-choose-card,html[data-dta-motion=reduce] .dt-pm{transition:none}
@media(max-width:1100px){.dt-do-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.dt-pm-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.dt-more-grid{grid-template-columns:1fr 1fr}.dt-skel{grid-template-columns:1fr 1fr}}
@media(max-width:720px){
  .dt-home .dt-hero{padding-top:18px}.dt-home .dt-hero h1{font-size:44px}
  .dt-choose{padding:16px;border-radius:16px}.dt-choose-grid{grid-template-columns:1fr;gap:12px}.dt-choose-card svg{max-height:110px}.dt-choose-card b{font-size:22px}
  .dt-do-grid{grid-template-columns:1fr 1fr}.dt-do-tile{min-height:96px;padding:12px}
  .dt-pm-grid,.dt-more-grid,.dt-skel{grid-template-columns:1fr}
  .dt-home-sec{margin-top:40px}.dt-home .dt-section-head{flex-direction:column;align-items:flex-start;gap:4px}
  .dt-pick-b{flex:1 1 calc(50% - 8px)}.dt-pick-t{flex:1 1 100%}
  .dt-aud button{padding:6px 8px}
  .dt-tacct{padding:18px}
  .dt-foot-inner{width:min(100% - 22px,1440px)}
}
.dt-link{white-space:nowrap}
.dt-home .dtp-banner{margin:18px 0 0}
@media(max-width:1400px){.dt-brand small{display:none}.dt-links{gap:1px}.dt-link{padding:9px 9px}.dt-link:hover,.dt-link.active{padding:8px 8px}.dt-nav-inner{gap:12px}}
@media(max-width:720px){.dt-choose-card{display:grid;grid-template-columns:110px 1fr;column-gap:12px;align-items:center;padding:10px}.dt-choose-card svg{grid-row:1/4;max-height:80px;margin:0}.dt-choose-card b,.dt-choose-card span,.dt-choose-card i{padding:0}.dt-choose-card i{padding-top:2px}.dt-choose-head h2{font-size:24px}.dt-choose-head p{font-size:14px}}
/* keep the account button on screen: "Continue" lives in the home hero too, so it steps aside on narrower desktops */
@media(max-width:1300px){.dt-actions .dt-action[data-resume]{display:none}}
@media(max-width:1500px){html[data-dt-audience=primary] .dt-actions .dt-action[data-resume]{display:none}}
@media(max-width:1500px){.dt-gtag{margin-left:4px;padding:0 5px;font-size:.75rem}}
@media(max-width:720px){.dt-actions{flex-wrap:wrap;justify-content:flex-end;max-width:100%}.dt-actions .dt-aud button{padding:6px 7px}.dtu-chip.dtu-out{padding:8px 11px}}
.dt-res-spec{margin:8px 0 0;font:600 12px ui-monospace,Menlo,Consolas,monospace;color:#2a4a63}.dt-res-spec b{background:#16344c;color:#fff;border-radius:6px;padding:2px 7px;margin-right:6px;font-family:system-ui,sans-serif;font-size:.75rem}
.dt-res-boardnote{margin:0 0 14px;font-size:13px;color:#4a5a67}
.dt-res-boardnote a{color:#1d4fd8;font-weight:700}

/* Tap targets (WCAG 2.5.8 asks for at least 24px; 44px on touch screens) */
.dt-open,.dt-textbtn,.dt-linkbtn{min-height:24px;display:inline-flex;align-items:center}
@media (pointer:coarse){.dt-open,.dt-textbtn,.dt-linkbtn,.dt-foot a,.dt-foot button{min-height:44px}}

.dtn-hi{border-color:#7bc4a2;background:#f1faf5}.dtn-hi summary{color:#14624a}
.dtn-hi-b{font-size:14px;line-height:1.6;color:#2b3a45}.dtn-hi-tag{font:700 11px 'JetBrains Mono',monospace;letter-spacing:.08em;text-transform:uppercase;color:#14624a;margin:10px 0}
.dtn-hi-b h4{margin:12px 0 4px;color:#16344c}.dtn-hi-b p{margin:8px 0}.dtn-hi-b blockquote{margin:10px 0;padding:8px 14px;border-left:4px solid #2c9b6c;background:#fff;font-style:italic}
.dtn-hi-b ul{margin:6px 0 6px 20px;padding:0}.dtn-hi-tw{overflow:auto;margin:10px 0}.dtn-hi-tw table{border-collapse:collapse;width:100%;font-size:13px;background:#fff}
.dtn-hi-tw th{background:#16344c;color:#fff;text-align:left;padding:6px 8px;font-size:12px}.dtn-hi-tw td{border:1px solid #d7dde6;padding:6px 8px;vertical-align:top}
.dtn-hi-cmp{margin-top:14px;padding:12px;background:#fff;border:1px solid #bfe3d0;border-radius:10px}.dtn-hi-cmp>b{display:block;margin-bottom:6px;color:#14624a}
.dtn-doc .dtn-ex-band{background:#e8f6ef;border-left:4px solid #2c9b6c;padding:8px 12px;margin:8px 0;font-size:13px}.dtn-doc .dtn-ex-lost{background:#fff7d6;border-left:4px solid #e0b53a;padding:8px 12px;margin:8px 0;font-size:13px}
.dtn-doc table{border-collapse:collapse;width:100%;font-size:12.5px;margin:8px 0}.dtn-doc th{background:#16344c;color:#fff;text-align:left;padding:5px 7px}.dtn-doc td{border:1px solid #cfd8e0;padding:5px 7px;vertical-align:top}
.dtn-doc blockquote{margin:8px 0;padding:6px 12px;border-left:4px solid #2c9b6c;font-style:italic}