@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Libre+Baskerville:wght@400;700&display=swap');
:root{--ink:#132b46;--muted:#546477;--blue:#175d85;--line:#dce5eb;--paper:#f7fafb;--white:#fff;--gold:#eabf64;--teal:#e3f1f1;--green:#187552;--red:#aa3541;font-family:'DM Sans',Arial,sans-serif;color:var(--ink)}*{box-sizing:border-box}body{margin:0;background:var(--paper);font-size:16px;line-height:1.55}button,input,select,textarea{font:inherit}a{color:inherit}button{cursor:pointer}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;background:white;padding:10px;z-index:100}.site-head{display:flex;align-items:center;gap:3rem;padding:17px max(4vw,20px);background:var(--ink);color:#fff;position:sticky;top:0;z-index:20;box-shadow:0 4px 20px #132b4615}.brand{display:flex;gap:12px;align-items:center;text-decoration:none;white-space:nowrap}.brand b{font-size:19px;display:block;line-height:1.2}.brand small{display:block;font-size:12px;opacity:.77}.brand-mark{display:grid;place-items:center;width:39px;height:39px;border:2px solid var(--gold);border-radius:9px;font-weight:700;letter-spacing:-6px;padding-right:5px;color:var(--gold);font-size:22px}.brand-mark span{transform:translateY(3px)}nav{display:flex;gap:24px;align-items:center;flex:1}nav a{text-decoration:none;color:#e0eaf1;font-size:14px;font-weight:600;white-space:nowrap;border-bottom:2px solid transparent;padding:8px 0}nav a.active,nav a:hover{color:var(--gold);border-color:var(--gold)}.head-link{font-size:14px;text-decoration:none;border:1px solid #8194a8;border-radius:7px;padding:7px 12px;white-space:nowrap}.page{max-width:1280px;margin:auto;padding:34px max(4vw,20px) 80px}.eyebrow{text-transform:uppercase;letter-spacing:.16em;color:var(--blue);font-size:12px;font-weight:700;margin:0 0 8px}h1,h2,h3{line-height:1.18}h1{font-family:'Libre Baskerville',Georgia,serif;font-size:clamp(30px,3.5vw,48px);margin:0 0 12px;letter-spacing:-.035em}h2{font-family:'Libre Baskerville',Georgia,serif;font-size:clamp(24px,2.3vw,32px);letter-spacing:-.03em;margin:0 0 14px}h3{font-size:19px;margin:0 0 10px}.lead{color:var(--muted);max-width:800px;font-size:18px;margin:0 0 24px}.intro{display:grid;grid-template-columns:1fr auto;align-items:end;border-bottom:1px solid var(--line);padding-bottom:26px;margin-bottom:24px;gap:20px}.count{border-left:3px solid var(--gold);padding-left:15px;color:var(--muted);font-size:14px}.count strong{display:block;color:var(--ink);font-size:28px;line-height:1.1}.workspace{display:grid;grid-template-columns:290px minmax(0,1fr);gap:24px;align-items:start}.side{background:#fff;border:1px solid var(--line);border-radius:12px;padding:19px;position:sticky;top:94px}.side label{display:block;font-weight:700;font-size:14px;margin:0 0 8px}.search,.side select,.answer-input,textarea{width:100%;border:1px solid #bdccd7;background:#fff;border-radius:8px;padding:11px 12px;color:var(--ink);outline-offset:2px}.search{margin-bottom:16px}.level-list{display:grid;grid-template-columns:repeat(3,1fr);gap:7px}.level-list button,.pill,.skill-tabs button{background:#fff;border:1px solid var(--line);border-radius:7px;color:var(--ink);font-weight:700;padding:8px 10px}.level-list button.active,.skill-tabs button.active{background:var(--ink);color:#fff;border-color:var(--ink)}.side-note{font-size:14px;color:var(--muted);margin:20px 0 0}.results-line{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:0 0 12px;color:var(--muted);font-size:14px}.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.topic-card{text-align:left;background:#fff;border:1px solid var(--line);border-radius:11px;padding:18px;min-height:115px;color:var(--ink);transition:transform .16s,border-color .16s,box-shadow .16s}.topic-card:hover,.topic-card:focus-visible{transform:translateY(-2px);border-color:#84a9bd;box-shadow:0 8px 22px #132b4612}.topic-card b{display:block;font-size:17px;line-height:1.3;margin:9px 0 4px}.topic-card small{color:var(--muted);font-size:13px}.level-tag{font-size:12px;font-weight:800;color:#115b79;background:#e4f2f7;border-radius:4px;padding:3px 7px}.detail{background:white;border:1px solid var(--line);border-radius:12px;padding:clamp(20px,3vw,35px)}.back{background:none;border:0;color:var(--blue);font-weight:700;padding:0;margin-bottom:18px}.detail h2{margin:10px 0 15px}.detail p{font-size:17px}.example{border-left:4px solid var(--gold);background:#fff9ea;padding:14px 17px;margin:20px 0 28px;border-radius:0 8px 8px 0;font-size:18px}.exercise{border-top:1px solid var(--line);padding:17px 0}.exercise label{display:block;font-weight:600;margin:0 0 10px}.exercise .answer-input{max-width:440px}.feedback{font-size:14px;margin:8px 0 0;min-height:20px;font-weight:700}.feedback.correct{color:var(--green)}.feedback.incorrect{color:var(--red)}.btn{border:0;background:var(--ink);color:white;border-radius:8px;padding:11px 16px;font-weight:700}.btn:hover{background:#205170}.btn-secondary{border:1px solid #94aabc;background:#fff;color:var(--ink)}.practice-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:18px}.score{font-weight:700;color:var(--green)}.empty{background:#fff;border:1px solid var(--line);padding:25px;border-radius:10px}.tabs{display:flex;gap:7px;flex-wrap:wrap;margin:4px 0 22px}.tabs button{padding:10px 17px}.exam-card,.guide-card,.teacher-card{background:white;border:1px solid var(--line);border-radius:12px;padding:24px}.exam-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:20px}.reading{background:#f0f5f7;border-radius:9px;padding:19px;margin:16px 0;font-size:17px;white-space:pre-line}.questions{margin-top:18px}.question{border-top:1px solid var(--line);padding:17px 0}.question strong{display:block;margin-bottom:8px}.question label{display:block;margin:7px 0}.question input[type=radio]{accent-color:var(--blue);margin-right:9px}.tip-box{background:#e6f1f3;border-radius:10px;padding:20px;height:max-content}.tip-box h3{font-size:17px}.tip-box ul{padding-left:21px;margin-bottom:0}.tip-box li{margin-bottom:9px}.meta{font-size:13px;text-transform:uppercase;letter-spacing:.1em;color:var(--blue);font-weight:700}.prompt-box{background:#f0f5f7;border-radius:9px;padding:20px;margin:17px 0}.prompt-box ul{margin-bottom:0}.model{margin-top:15px;padding:16px;border-radius:8px;border:1px solid var(--line);background:#fff;white-space:pre-line}.model summary{cursor:pointer;font-weight:700}.guide-grid,.teacher-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.guide-card p,.teacher-card p{color:var(--muted);margin:8px 0 12px}.guide-card ul,.teacher-card ul{padding-left:20px;margin:9px 0}.guide-card li,.teacher-card li{margin:7px 0}.guide-card a,.teacher-card a{color:var(--blue);font-weight:700}.section-break{margin:38px 0 20px}.resource-links{display:flex;gap:10px;flex-wrap:wrap}.resource-links a{padding:8px 12px;background:#e6f1f3;border-radius:7px;text-decoration:none;font-size:14px}.resource-links a:hover{text-decoration:underline}.notice{border-left:4px solid var(--gold);padding:12px 17px;background:#fff7e8;margin:22px 0}.small{font-size:14px;color:var(--muted)}footer{background:#0c243d;color:#e2edf4;padding:36px max(4vw,20px);display:grid;grid-template-columns:1fr auto;gap:20px}footer p{margin:6px 0}footer a{display:block;margin-bottom:8px;text-decoration:none}.footnote{grid-column:1/-1;font-size:13px;color:#a8bbca;border-top:1px solid #31485c;padding-top:16px}@media(max-width:950px){.site-head{gap:16px;flex-wrap:wrap}.site-head nav{order:3;flex-basis:100%;overflow-x:auto;gap:20px}.head-link{margin-left:auto}.workspace{grid-template-columns:1fr}.side{position:static}.level-list{grid-template-columns:repeat(6,1fr)}.exam-layout{grid-template-columns:1fr}}@media(max-width:620px){.page{padding-top:25px}.intro{grid-template-columns:1fr}.count{display:none}.topic-grid,.guide-grid,.teacher-grid{grid-template-columns:1fr}.level-list{grid-template-columns:repeat(3,1fr)}.site-head{padding:12px 16px}.brand small{font-size:11px}.head-link{display:none}.tabs button{flex:1}.topic-card{min-height:auto}footer{grid-template-columns:1fr}}

.brand-logo{width:52px;height:52px;object-fit:contain;border-radius:50%;background:#fff;flex:none}.footer-logo{width:72px;height:72px;object-fit:contain;border-radius:50%;background:#fff;display:block;margin-bottom:10px}