:root{--navy:#0b2555;--blue:#2364df;--blue-dark:#174ead;--sky:#e9f2ff;--ink:#14233d;--muted:#5c6880;--line:#dce5f3;--paper:#fff;--wash:#f5f8fd;--gold:#f2bc54;--green:#16855b;--green-soft:#e8f7f1;--amber:#a76600;--amber-soft:#fff3da;--red:#b13b47;--red-soft:#fff0f1;--shadow:0 24px 70px rgba(11,37,85,.14)}
*{box-sizing:border-box}[hidden]{display:none!important}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--paper);font:16px/1.6 "DM Sans",system-ui,sans-serif;-webkit-font-smoothing:antialiased}button,input{font:inherit}button{cursor:pointer}a{color:inherit}.shell{width:min(1160px,calc(100% - 40px));margin-inline:auto}.skip-link{position:fixed;z-index:300;left:16px;top:-80px;padding:11px 16px;color:white;background:var(--navy);border-radius:8px}.skip-link:focus{top:16px}
header{position:sticky;z-index:100;top:0;border-bottom:1px solid rgba(220,229,243,.85);background:rgba(255,255,255,.94);backdrop-filter:blur(16px)}.nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;color:var(--navy);font:800 17px "Manrope",sans-serif;text-decoration:none}.brand>span:last-child{display:grid;line-height:1.15}.brand small{margin-top:3px;color:var(--muted);font:600 11px "DM Sans",sans-serif;letter-spacing:.08em;text-transform:uppercase}.brand-mark{width:42px;height:42px;display:grid!important;place-items:center;position:relative;border-radius:12px;background:var(--navy);color:white;letter-spacing:-.08em;box-shadow:0 8px 20px rgba(11,37,85,.18)}.brand-mark:after{content:"";position:absolute;width:8px;height:8px;top:-2px;right:-2px;border:3px solid white;border-radius:50%;background:var(--gold)}.nav-actions{display:flex;align-items:center;gap:20px}.nav-actions>a{color:#34435d;font-weight:700;text-decoration:none}.language-toggle{display:flex;padding:3px;border:1px solid var(--line);border-radius:999px;background:var(--wash)}.language-toggle button{width:40px;height:34px;border:0;border-radius:999px;background:transparent;color:var(--muted);font-size:12px;font-weight:800}.language-toggle button[aria-pressed="true"]{background:var(--navy);color:white}
.hero{min-height:calc(100vh - 76px);padding:88px 0 100px;background:radial-gradient(circle at 83% 3%,rgba(35,100,223,.14),transparent 28%),linear-gradient(180deg,#fbfdff,#f2f7ff)}.eyebrow,.kicker{margin:0 0 13px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.09em;text-transform:uppercase}.hero h1,.workspace-heading h1{max-width:850px;margin:0;color:var(--navy);font:800 clamp(42px,5.5vw,70px)/1.04 "Manrope",sans-serif;letter-spacing:-.052em}.lead{max-width:780px;margin:24px 0 0;color:var(--muted);font-size:19px}.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:27px}.trust-row span{padding:8px 13px;border:1px solid #ccdcf4;border-radius:999px;background:rgba(255,255,255,.78);color:#38506e;font-size:13px;font-weight:700}.trust-row span:before{content:"✓";margin-right:7px;color:var(--blue)}.test-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:42px}.test-card{min-height:215px;display:flex;flex-direction:column;align-items:flex-start;padding:25px;border:1px solid var(--line);border-radius:20px;background:white;box-shadow:0 10px 30px rgba(11,37,85,.05);text-align:left;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.test-card:hover,.test-card:focus-visible{transform:translateY(-3px);border-color:#9bb9ea;box-shadow:0 18px 38px rgba(11,37,85,.11)}.test-icon{width:45px;height:45px;display:grid;place-items:center;border-radius:13px;background:var(--sky);color:var(--blue);font:800 17px "Manrope",sans-serif}.test-card h2{margin:18px 0 8px;color:var(--navy);font:800 20px/1.25 "Manrope",sans-serif}.test-card p{margin:0;color:var(--muted);font-size:14px}.test-card strong{margin-top:auto;padding-top:18px;color:var(--blue);font-size:14px}
.workspace{min-height:calc(100vh - 76px);padding:55px 0 90px;background:var(--wash)}.workspace-shell{max-width:1050px}.back-button{display:inline-flex;align-items:center;gap:7px;padding:8px 0;border:0;background:transparent;color:var(--blue);font-weight:800}.workspace-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:35px;margin:33px 0 27px}.workspace-heading h1{font-size:clamp(34px,4.5vw,54px)}.progress-wrap{width:220px;flex:0 0 auto;color:var(--muted);font-size:13px;font-weight:700}.progress-track{height:8px;margin-top:8px;overflow:hidden;border-radius:999px;background:#dce5f3}.progress-track span{display:block;width:50%;height:100%;border-radius:inherit;background:var(--blue);transition:width .25s ease}.test-panel{display:grid;grid-template-columns:.92fr 1.08fr;gap:46px;padding:38px;border:1px solid var(--line);border-radius:25px;background:white;box-shadow:var(--shadow)}.panel-copy h2,.results-panel h2{margin:0;color:var(--navy);font:800 clamp(28px,4vw,40px)/1.15 "Manrope",sans-serif;letter-spacing:-.035em}.panel-copy>p:not(.kicker){color:var(--muted)}.panel-copy ul{display:grid;gap:11px;margin:25px 0 0;padding:0;list-style:none}.panel-copy li{position:relative;padding-left:27px;color:#40516a}.panel-copy li:before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:900}.student-form{display:grid;gap:16px;padding:26px;border:1px solid var(--line);border-radius:19px;background:var(--wash)}label{display:grid;gap:7px;color:#263a59;font-size:14px;font-weight:700}input{width:100%;min-height:49px;padding:11px 13px;border:1px solid #cfdbea;border-radius:11px;background:white;color:var(--ink);outline:0}input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(35,100,223,.12)}.privacy-note{margin:1px 0 0;color:var(--muted);font-size:12px}.honeypot{position:absolute!important;left:-10000px!important;width:1px!important;height:1px!important;overflow:hidden!important}.primary-button,.secondary-button{min-height:51px;display:inline-flex;align-items:center;justify-content:center;gap:11px;padding:12px 21px;border-radius:999px;font-weight:800;text-decoration:none}.primary-button{border:1px solid var(--blue);background:var(--blue);color:white;box-shadow:0 13px 28px rgba(35,100,223,.2)}.primary-button:hover:not(:disabled){background:var(--blue-dark)}.primary-button:disabled{opacity:.58;cursor:wait}.secondary-button{border:1px solid var(--line);background:white;color:var(--navy)}
.questions-panel{display:grid;gap:20px}.question-card{padding:27px;border:1px solid var(--line);border-radius:19px;background:white;box-shadow:0 8px 25px rgba(11,37,85,.045)}.question-meta{display:flex;justify-content:space-between;gap:20px;margin-bottom:12px;color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.04em;text-transform:uppercase}.question-card h2{margin:0;color:var(--navy);font:800 20px/1.4 "Manrope",sans-serif}.answer-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:19px}.answer-option{position:relative;display:flex;align-items:center;gap:12px;min-height:54px;padding:11px 14px;border:1px solid var(--line);border-radius:12px;background:#fbfcff;color:#34435d;font-weight:600;cursor:pointer}.answer-option:hover{border-color:#9bb9ea;background:var(--sky)}.answer-option:has(input:checked){border-color:var(--blue);background:var(--sky);box-shadow:inset 0 0 0 1px var(--blue)}.answer-option input{width:18px;min-height:18px;margin:0;padding:0;accent-color:var(--blue);box-shadow:none}.option-key{width:28px;height:28px;display:grid;place-items:center;flex:0 0 auto;border-radius:8px;background:white;color:var(--navy);font-size:12px;font-weight:800}.submit-row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:23px;border:1px solid var(--line);border-radius:18px;background:white;position:sticky;bottom:14px;box-shadow:0 15px 45px rgba(11,37,85,.14)}.submit-row p{margin:0;color:var(--muted);font-weight:700}
.results-panel{padding:38px;border:1px solid var(--line);border-radius:25px;background:white;box-shadow:var(--shadow)}.result-hero{display:grid;grid-template-columns:180px 1fr;align-items:center;gap:38px}.score-ring{width:170px;height:170px;display:grid;place-content:center;text-align:center;border-radius:50%;background:conic-gradient(var(--blue) var(--score,0%),#e6edf8 0);position:relative}.score-ring:before{content:"";position:absolute;inset:13px;border-radius:50%;background:white}.score-ring>*{position:relative}.score-ring strong{color:var(--navy);font:800 37px/1 "Manrope",sans-serif}.score-ring span{margin-top:6px;color:var(--muted);font-size:11px;font-weight:800;text-transform:uppercase}.result-hero p:not(.kicker){max-width:690px;margin:12px 0 0;color:var(--muted)}.delivery-note{font-weight:700;color:var(--green)!important}.topic-results{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:34px}.topic-result{padding:20px;border:1px solid var(--line);border-radius:16px}.topic-top{display:flex;align-items:center;justify-content:space-between;gap:15px}.topic-result h3{margin:0;color:var(--navy);font:800 17px "Manrope",sans-serif}.topic-result strong{font-size:14px}.topic-meter{height:8px;margin:14px 0 11px;overflow:hidden;border-radius:999px;background:#e9eef6}.topic-meter span{display:block;height:100%;border-radius:inherit}.topic-result p{margin:0;color:var(--muted);font-size:13px}.topic-result.strong{background:var(--green-soft)}.topic-result.strong strong{color:var(--green)}.topic-result.strong .topic-meter span{background:var(--green)}.topic-result.developing{background:var(--amber-soft)}.topic-result.developing strong{color:var(--amber)}.topic-result.developing .topic-meter span{background:var(--gold)}.topic-result.review{background:var(--red-soft)}.topic-result.review strong{color:var(--red)}.topic-result.review .topic-meter span{background:var(--red)}.result-actions{display:flex;flex-wrap:wrap;gap:11px;margin-top:30px}.toast{position:fixed;z-index:500;right:24px;bottom:24px;max-width:420px;padding:14px 17px;border-radius:12px;background:var(--navy);color:white;box-shadow:var(--shadow)}.toast.error{background:#8d2733}footer{padding:32px 0;border-top:1px solid var(--line);background:white}.footer-row{display:flex;justify-content:space-between;gap:24px;color:var(--muted);font-size:14px}.footer-row strong{color:var(--navy)}
.question-visual{margin:20px 0 4px;padding:16px;border:1px solid #d9e4f3;border-radius:15px;background:linear-gradient(180deg,#fbfdff,#f3f7fd)}.question-visual svg{width:min(100%,500px);height:auto;display:block;margin:auto}.question-visual figcaption{margin-top:8px;color:var(--muted);font-size:12px;text-align:center}.question-visual text{fill:#263a59;font:700 14px "DM Sans",sans-serif}.question-visual .grid path{stroke:#dfe8f5;stroke-width:1}.question-visual .axis path{fill:none;stroke:#69809f;stroke-width:2}.question-visual .shape{fill:none;stroke:#173968;stroke-width:4;stroke-linecap:round;stroke-linejoin:round}.question-visual .diagram-line,.question-visual .diagram-line path{fill:none;stroke:#2364df;stroke-width:4;stroke-linecap:round}.question-visual .diagram-points circle,.question-visual .diagram-point{fill:#2364df}.question-visual .angle{fill:none;stroke:#cc4656;stroke-width:3}.question-visual .angle.secondary{stroke:#2364df}.question-visual .right-angle{fill:none;stroke:#cc4656;stroke-width:3}.leave-unanswered{margin-top:12px;padding:7px 2px;border:0;background:transparent;color:#5b6f8b;font-size:13px;font-weight:700;text-decoration:underline;text-underline-offset:3px}.leave-unanswered:hover,.leave-unanswered:focus-visible{color:var(--blue)}.completion-note{display:inline-flex!important;margin-top:14px!important;padding:7px 11px;border-radius:999px;background:var(--sky);color:var(--blue)!important;font-size:13px;font-weight:800}
@media(max-width:900px){.test-cards{grid-template-columns:1fr 1fr}.test-panel{grid-template-columns:1fr}.workspace-heading{align-items:flex-start;flex-direction:column}.progress-wrap{width:100%}.result-hero{grid-template-columns:1fr}.score-ring{width:150px;height:150px}.topic-results{grid-template-columns:1fr}}
@media(max-width:620px){.shell{width:min(100% - 28px,1160px)}.nav-actions>a{display:none}.hero{padding:59px 0 75px}.hero h1{font-size:40px}.test-cards{grid-template-columns:1fr}.workspace{padding:35px 0 65px}.test-panel,.results-panel{padding:22px}.student-form{padding:18px}.answer-grid{grid-template-columns:1fr}.question-card{padding:21px}.submit-row{align-items:stretch;flex-direction:column;bottom:8px}.result-actions{display:grid}.footer-row{flex-direction:column;gap:5px}}
@media(max-width:620px){.brand{gap:8px;font-size:14px}.brand small{display:none}.nav-actions{gap:7px}.nav-actions>a{width:38px;height:38px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;font-size:0;text-decoration:none}.nav-actions>a:before{content:"◎";font-size:18px}.language-toggle button{width:34px}}
.picker-controls{display:grid;grid-template-columns:1fr 1.6fr;gap:20px;margin:30px 0 14px;padding:22px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:0 14px 36px rgba(11,37,85,.07)}.picker-label{display:block;margin-bottom:10px;color:var(--navy);font-weight:800;font-size:13px}.picker-buttons,.grade-picker{display:flex;flex-wrap:wrap;gap:7px}.picker-buttons button,.grade-picker button{border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);padding:9px 11px;font:700 13px "DM Sans",sans-serif;cursor:pointer}.picker-buttons button.active,.grade-picker button.active{border-color:var(--navy);background:var(--navy);color:#fff}.picker-note{margin:0 0 17px;color:var(--muted);font-size:13px;line-height:1.5}
@media(max-width:780px){.picker-controls{grid-template-columns:1fr;padding:17px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.test-card{transition:none}}