:root{--green:#58cc02;--green-dark:#46a800;--green-soft:#d7ffb8;--blue:#1cb0f6;--ink:#4b4b4b;--muted:#777;--line:#e5e5e5;--bg:#fff;--red:#ea5b5b;--radius:16px;font-family:Nunito,"Arial Rounded MT Bold","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:#fff}*{box-sizing:border-box}body{margin:0;min-height:100vh}button,textarea{font:inherit}button{cursor:pointer}button:focus-visible,a:focus-visible,textarea:focus-visible{outline:3px solid var(--blue);outline-offset:3px}.site-header{height:80px;display:flex;align-items:center;justify-content:space-between;max-width:1200px;margin:auto;padding:0 24px;border-bottom:2px solid #f2f2f2}.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:900;font-size:25px;letter-spacing:-1px}.brand-mark{display:grid;place-items:center;width:40px;height:40px;background:var(--green);color:white;border-radius:12px;font-size:25px}.brand-dot{color:var(--green)}.header-badge{font-size:13px;font-weight:800;color:var(--muted);border:2px solid var(--line);border-radius:12px;padding:9px 14px}.site-footer{background:var(--green);color:#fff;margin-top:90px}.footer-inner{max-width:1200px;margin:auto;padding:38px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px}.footer-inner strong{font-size:20px}.footer-inner span{font-size:13px;color:#f0ffe4}.loading{max-width:1120px;margin:100px auto;text-align:center;color:var(--muted)}.hero{max-width:1200px;min-height:560px;margin:auto;padding:92px 24px 64px;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:50px}.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--green-dark);font-size:13px;font-weight:900;letter-spacing:1px;text-transform:uppercase}.eyebrow:before{content:"";display:block;width:9px;height:9px;background:var(--green);border-radius:50%}.hero h1{font-size:clamp(44px,6vw,72px);line-height:1.12;letter-spacing:-.035em;margin:20px 0 22px;font-weight:1000}.hero h1 em{font-style:normal;color:var(--green)}.hero p{font-size:18px;line-height:1.8;color:var(--muted);max-width:530px;margin:0 0 32px}.actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.btn{border:2px solid transparent;border-radius:12px;padding:14px 23px;min-height:52px;font-size:15px;font-weight:900;letter-spacing:.2px;transition:transform .12s,background .12s;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn:hover{transform:translateY(-2px)}.btn-primary{background:var(--green);color:white;border-color:var(--green-dark);border-bottom-width:4px}.btn-secondary{background:white;color:var(--blue);border-color:#afafaf;border-bottom-width:4px}.btn-plain{background:white;color:var(--ink);border-color:var(--line)}.btn-danger{background:white;color:var(--red);border-color:#ffcbcb}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}.mascot-wrap{display:grid;place-items:center;position:relative;min-height:380px}.mascot{width:min(100%,410px);height:auto}.sparkle{position:absolute;color:#ffd34e;font-size:33px}.sparkle.one{top:25px;left:7%}.sparkle.two{right:8%;bottom:65px;color:var(--blue)}.summary-strip{max-width:1152px;margin:0 auto 60px;padding:0 24px;display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.summary-item{padding:20px 22px;border:2px solid var(--line);border-radius:16px}.summary-item strong{font-size:26px;color:var(--ink);display:block}.summary-item span{font-size:13px;color:var(--muted);font-weight:700}.intro-note{max-width:1152px;margin:0 auto;padding:0 24px}.note-box{border-radius:16px;background:#f8fcf5;border:2px solid #e9f7df;padding:20px 24px;color:var(--muted);font-size:14px;line-height:1.7}.note-box strong{color:var(--ink)}.exam-shell{max-width:1200px;margin:0 auto;padding:36px 24px 0}.exam-top{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:24px}.exam-top h1{font-size:27px;margin:0 0 5px}.exam-top p{font-size:14px;color:var(--muted);margin:0}.exam-layout{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:28px;align-items:start}.progress-track{height:12px;border-radius:99px;background:#e9e9e9;overflow:hidden;margin-bottom:24px}.progress-fill{height:100%;background:var(--green);border-radius:inherit;transition:width .2s}.question-card{border:2px solid var(--line);border-radius:22px;padding:32px;min-height:480px}.question-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.pill{display:inline-flex;align-items:center;border:2px solid #e5f7d6;background:#f5ffed;border-radius:12px;padding:6px 10px;font-size:12px;font-weight:900;color:var(--green-dark)}.pill.gray{border-color:var(--line);background:#fafafa;color:var(--muted)}.question-card h2{font-size:24px;line-height:1.55;margin:26px 0 24px;white-space:pre-wrap}.question-help{font-size:13px;color:var(--muted);margin:-10px 0 22px}.options{display:grid;gap:12px}.option{width:100%;text-align:left;background:#fff;border:2px solid #e5e5e5;border-bottom-width:4px;border-radius:14px;padding:15px 17px;color:var(--ink);display:flex;align-items:flex-start;gap:14px;font-size:16px;line-height:1.55}.option:hover{background:#f9f9f9}.option.selected{border-color:var(--blue);background:#eaf8ff}.option-key{flex:none;width:28px;height:28px;display:grid;place-items:center;border:2px solid #c8c8c8;border-radius:9px;font-size:13px;font-weight:900;line-height:1}.option.selected .option-key{color:#fff;background:var(--blue);border-color:var(--blue)}.short-input{width:100%;min-height:230px;resize:vertical;border:2px solid var(--line);border-radius:14px;padding:16px;line-height:1.7;color:var(--ink);font-size:15px}.question-controls{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:26px}.nav-panel{border:2px solid var(--line);border-radius:20px;padding:20px;position:sticky;top:20px}.nav-panel h2{font-size:16px;margin:0 0 12px}.nav-panel p{font-size:13px;color:var(--muted);margin:0 0 18px}.nav-group{margin-top:18px}.nav-group h3{font-size:12px;color:var(--muted);margin:0 0 10px}.number-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}.number{height:40px;border:2px solid var(--line);border-radius:10px;background:white;color:var(--muted);font-size:12px;font-weight:900}.number.answered{background:var(--green-soft);border-color:#b1eb88;color:#389600}.number.current{border-color:var(--blue);color:#079bdc}.legend{display:flex;gap:16px;margin-top:18px;color:var(--muted);font-size:12px}.legend span{display:flex;align-items:center;gap:5px}.legend i{width:12px;height:12px;border:2px solid var(--line);border-radius:3px}.legend .done{background:var(--green-soft);border-color:#b1eb88}.review-shell{max-width:1080px;margin:0 auto;padding:52px 24px 0}.result-hero{text-align:center;border:2px solid var(--line);border-radius:24px;padding:44px 24px}.result-icon{font-size:46px;margin-bottom:10px}.result-hero h1{font-size:34px;margin:8px 0}.result-hero p{color:var(--muted);line-height:1.6}.score{font-size:76px;line-height:1.15;color:var(--green);font-weight:1000;letter-spacing:-4px}.score.fail{color:var(--red)}.score small{font-size:24px;letter-spacing:0;color:var(--muted)}.result-facts{display:flex;justify-content:center;gap:28px;flex-wrap:wrap;margin:22px 0 28px}.result-facts span{font-size:14px;color:var(--muted)}.result-facts strong{color:var(--ink)}.review-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:48px 0 20px;flex-wrap:wrap}.review-toolbar h2{margin:0;font-size:26px}.filters{display:flex;gap:8px;flex-wrap:wrap}.filter{border:2px solid var(--line);background:white;border-radius:12px;padding:9px 14px;color:var(--muted);font-size:13px;font-weight:900}.filter.active{color:var(--green-dark);background:#f3ffe9;border-color:#b9ed95}.review-list{display:grid;gap:16px}.review-card{border:2px solid var(--line);border-radius:18px;padding:25px}.review-card h3{font-size:19px;line-height:1.55;white-space:pre-wrap;margin:14px 0}.review-card .options{gap:8px}.review-card .option{cursor:default;border-width:2px;padding:9px 12px;font-size:14px}.review-card .option:hover{background:white}.review-card .option.correct{background:#f3ffe9;border-color:#b0e98c}.review-card .option.wrong{background:#fff1f1;border-color:#ffb6b6}.review-card .option.selected:not(.correct){border-color:#ffb6b6;background:#fff1f1}.review-card .option.correct .option-key{background:var(--green);border-color:var(--green);color:#fff}.review-card .option.wrong .option-key{background:var(--red);border-color:var(--red);color:white}.answer-box{background:#f7fcf4;border:2px solid #ddefcf;border-radius:14px;padding:17px 19px;margin-top:20px;white-space:pre-wrap;line-height:1.75;font-size:14px}.answer-box strong{display:block;color:var(--green-dark);font-size:15px;margin-bottom:5px}.answer-box p{margin:8px 0 0}.your-answer{color:var(--muted);font-size:13px;margin-top:12px;white-space:pre-wrap}.dialog-backdrop{position:fixed;inset:0;background:rgba(0,4,55,.35);display:grid;place-items:center;padding:20px;z-index:10}.dialog{background:white;border-radius:20px;border:2px solid var(--line);padding:28px;max-width:450px;width:100%}.dialog h2{margin:0 0 10px}.dialog p{color:var(--muted);line-height:1.65}.dialog .actions{justify-content:flex-end;margin-top:25px}@media(max-width:900px){.hero{grid-template-columns:1fr;min-height:0;padding-top:60px}.mascot-wrap{min-height:260px;grid-row:1}.mascot{max-width:270px}.summary-strip{grid-template-columns:repeat(2,1fr)}.exam-layout{grid-template-columns:1fr}.nav-panel{position:static;order:2}.footer-inner{flex-direction:column;align-items:flex-start}}@media(max-width:600px){.site-header{height:68px;padding:0 16px}.header-badge{display:none}.hero{padding:35px 20px 45px;gap:10px}.hero h1{font-size:44px}.hero p{font-size:16px}.mascot-wrap{min-height:210px}.mascot{max-width:220px}.summary-strip{padding:0 20px;gap:9px}.summary-item{padding:14px}.summary-item strong{font-size:22px}.intro-note{padding:0 20px}.exam-shell,.review-shell{padding:24px 16px 0}.exam-top{align-items:flex-start}.exam-top h1{font-size:21px}.question-card{padding:20px;min-height:0}.question-card h2{font-size:19px}.option{font-size:14px}.btn{padding:12px 16px}.result-hero{padding:32px 16px}.score{font-size:65px}.review-card{padding:17px}.site-footer{margin-top:60px}}
/* The supplied fox illustration is the site's character. */
.brand-mark{object-fit:cover;object-position:center 34%;border:2px solid var(--green);background:#fff}.mascot{width:min(100%,410px);aspect-ratio:1/1;object-fit:cover;display:block;border:3px solid var(--green);border-radius:24px;transform:rotate(-2deg)}.mascot-wrap{min-height:430px}.result-mascot{width:82px;height:82px;object-fit:cover;object-position:center 34%;border:3px solid var(--green);border-radius:18px;margin-bottom:10px}@media(max-width:900px){.mascot-wrap{min-height:280px}}@media(max-width:600px){.mascot-wrap{min-height:230px}.mascot{max-width:220px;border-radius:18px}}

/* New transparent mascot artwork. */
.brand-mark{display:block;background:#d7ffb8 url("./assets/mascot.png") center 1px/72px 72px no-repeat;border:2px solid var(--green);overflow:hidden}.mascot{width:min(100%,430px);height:auto;aspect-ratio:1/1;object-fit:contain;border:0;border-radius:0;transform:none}.mascot-wrap{min-height:430px}.result-mascot{width:108px;height:108px;object-fit:contain;border:0;border-radius:0;background:#f4ffe9;padding:4px}@media(max-width:900px){.mascot-wrap{min-height:280px}}@media(max-width:600px){.mascot-wrap{min-height:230px}.mascot{max-width:230px}}