:root{--ink:#16333d;--muted:#627781;--deep:#174f69;--accent:#23859a;--accent-2:#45afaf;--gold:#f4bd4f;--paper:#f4f8f8;--white:#fff;--line:#cfe0e3;--soft:#e8f7f7;--good:#157347;--good-bg:#e9f8f0;--bad:#ad2e24;--bad-bg:#fff0ed;--hint:#fff7dc;--shadow:0 18px 50px rgba(23,79,105,.13);--radius:24px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-rounded,"Segoe UI",Arial,sans-serif;color:var(--ink);background:radial-gradient(circle at top left,#dff5f2 0,transparent 32%),linear-gradient(180deg,#f8fbfb,var(--paper));min-height:100vh}button,input{font:inherit}.top-strip{padding:9px 16px;text-align:center;background:var(--deep);color:#fff;font-size:.78rem;font-weight:850;letter-spacing:.08em;text-transform:uppercase}.app-shell{width:min(960px,calc(100% - 28px));margin:28px auto 70px}.screen{display:none}.screen.active{display:block;animation:fadeIn .3s ease}@keyframes fadeIn{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}
.hero-card,.results-hero{position:relative;overflow:hidden;padding:clamp(32px,5vw,54px);border-radius:30px;background:linear-gradient(135deg,var(--deep),var(--accent) 58%,var(--accent-2));color:#fff;box-shadow:var(--shadow)}.hero-card:after,.results-hero:after{content:"";position:absolute;width:280px;height:280px;border-radius:50%;right:-95px;top:-120px;background:rgba(255,255,255,.11)}.hero-card>*{position:relative;z-index:1}.eyebrow{margin:0 0 10px;font-size:.76rem;font-weight:900;letter-spacing:.13em;color:#d7fbfb}.hero-card h1,.results-hero h1{margin:0;font-size:clamp(2.35rem,7vw,4.4rem);line-height:1;letter-spacing:-.04em}.hero-copy{max-width:680px;margin:18px 0 0;font-size:1.08rem;line-height:1.75;color:#efffff}.level-badge{display:inline-flex;margin-top:24px;padding:10px 15px;border-radius:999px;background:#fff;color:var(--deep);font-weight:900}.welcome-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin:22px 0 8px;padding:6px 0 18px;border-bottom:1px solid var(--line)}.info-card{display:flex;gap:10px;align-items:center;padding:12px 18px;border-right:1px solid var(--line)}.info-card:last-child{border-right:0}.info-icon{display:grid;place-items:center;flex:0 0 40px;height:40px;border-radius:12px;background:var(--soft);color:var(--deep);font-size:.84rem;font-weight:950}.info-card strong{display:block}.info-card p{margin:3px 0 0;color:var(--muted);font-size:.84rem}.coverage-card{padding:20px 0 0}.coverage-card h2{margin:0 0 13px;font-size:1.28rem}.topic-chips{display:flex;flex-wrap:wrap;gap:8px}.topic-chips span{padding:9px 12px;border-radius:999px;background:var(--soft);color:var(--deep);font-size:.86rem;font-weight:800}.convention-note{margin-top:16px;padding:14px 16px;border-radius:12px;background:#fff8e4;border-left:4px solid var(--gold);line-height:1.55}.start-button{display:flex;margin:24px auto 0;min-width:220px;justify-content:center}
.primary-button,.secondary-button,.text-button{border:0;cursor:pointer;font-weight:880;transition:.18s ease}.primary-button,.secondary-button{padding:12px 17px;border-radius:13px}.primary-button{background:var(--accent);color:#fff;box-shadow:0 8px 18px rgba(35,133,154,.2)}.primary-button:hover,.secondary-button:hover{transform:translateY(-1px)}.secondary-button{background:#fff;color:var(--deep);border:1px solid var(--line)}.text-button{padding:8px;background:transparent;color:var(--deep)}
.quiz-header{display:flex;justify-content:space-between;align-items:flex-end;gap:16px}.quiz-header .eyebrow{color:var(--accent)}.quiz-header h2{margin:0;font-size:clamp(1.55rem,4vw,2.15rem)}.score-pill{padding:9px 13px;border-radius:999px;background:#fff;border:1px solid var(--line);font-weight:850}.progress-track{height:12px;margin:16px 0 20px;border-radius:999px;background:#dce9eb;overflow:hidden}.progress-fill{height:100%;width:0;border-radius:inherit;background:linear-gradient(90deg,var(--accent),var(--gold));transition:width .35s ease}.question-card{min-height:460px;padding:clamp(24px,4vw,40px);border-radius:var(--radius);display:flex;flex-direction:column;background:rgba(255,255,255,.97);border:1px solid var(--line);box-shadow:0 10px 28px rgba(30,77,89,.08)}.question-topline{display:flex;justify-content:space-between;align-items:center;gap:12px}.question-number{display:grid;place-items:center;width:43px;height:43px;border-radius:14px;background:var(--soft);color:var(--deep);font-weight:950}.skill-tag{padding:7px 10px;border-radius:999px;background:#f6f0df;color:#72510e;font-size:.78rem;font-weight:850}.question-card h3{margin:26px 0 8px;font-size:clamp(1.35rem,3vw,1.85rem);line-height:1.4}.question-instruction{margin:0 0 24px;color:var(--muted);line-height:1.6}.option-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.option{display:flex;align-items:center;gap:11px;padding:15px;border:2px solid var(--line);border-radius:15px;background:#fff;cursor:pointer;font-weight:720}.option:hover,.option.selected{border-color:var(--accent);background:var(--soft)}.option input{width:18px;height:18px;accent-color:var(--accent)}.text-answer{width:100%;height:54px;padding:15px;border:2px solid var(--line);border-radius:15px;color:var(--ink);background:#fff}.text-answer:focus{outline:4px solid rgba(35,133,154,.12);border-color:var(--accent)}.feedback-box,.support-box{display:none;margin-top:16px;padding:14px 16px;border-radius:14px;line-height:1.55}.feedback-box.show,.support-box.show{display:block}.feedback-box.good{background:var(--good-bg);color:var(--good);border:1px solid #9ad3b6}.feedback-box.bad{background:var(--bad-bg);color:var(--bad);border:1px solid #efb2ac}.hint-box{background:var(--hint);border:1px solid #efd47f}.solution-box{background:#eaf4fb;border:1px solid #afd1e5}.question-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:auto;padding-top:24px}.question-actions .primary-button{margin-left:auto}.navigation-row{display:flex;justify-content:space-between;align-items:center;margin-top:13px;color:var(--muted);font-size:.9rem}
.review-panel,.result-card{background:rgba(255,255,255,.97);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:var(--radius);padding:clamp(24px,4vw,38px)}.review-panel h1{margin:0 0 8px;font-size:clamp(2rem,5vw,3rem)}.review-copy{color:var(--muted);line-height:1.6}.review-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;margin:22px 0}.review-question{border:2px solid var(--line);border-radius:14px;background:#fff;padding:13px 8px;cursor:pointer;text-align:center;font-weight:900;color:var(--deep)}.review-question.answered{background:var(--good-bg);border-color:#9ad3b6}.review-actions,.results-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:11px;margin-top:20px}.results-hero{text-align:center}.results-hero>*{position:relative;z-index:1}.result-ring{display:grid;place-items:center;width:148px;height:148px;margin:0 auto 20px;border-radius:50%;background:rgba(255,255,255,.15);box-shadow:inset 0 0 0 13px rgba(255,255,255,.12)}.result-ring span{font-size:2rem;font-weight:950}.results-hero p{max-width:620px;margin:14px auto;color:#eaffff;line-height:1.6}.results-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin:18px 0}.result-card h2{margin-top:0}.result-list{display:grid;gap:9px}.result-item{padding:10px 12px;border-radius:12px;background:var(--good-bg);font-weight:780}.review-card .result-item{background:var(--bad-bg)}
@media(max-width:720px){.welcome-grid,.results-grid{grid-template-columns:1fr}.info-card{border-right:0;border-bottom:1px solid var(--line)}.option-grid{grid-template-columns:1fr}.review-grid{grid-template-columns:repeat(4,1fr)}.question-actions .primary-button{margin-left:0;width:100%}.quiz-header{align-items:flex-start;flex-direction:column}}