:root{--ink:#17213f;--navy:#172b67;--blue:#2d65d7;--coral:#ff725b;--muted:#68728b;--line:#e1e6ef;--pale:#f6f8fc}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;background:#fff}a{text-decoration:none;color:inherit}.wrap{width:min(1160px,calc(100% - 40px));margin:auto}.site-header{height:78px;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}.nav{height:100%;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-size:20px;line-height:.8}.brand>span{width:38px;height:38px;display:grid;place-items:center;border-radius:11px;background:var(--navy);color:#fff;font:22px Georgia}.brand b{color:var(--blue)}.brand small{display:block;font-size:8px;letter-spacing:.32em;margin-top:8px;color:#8290a8}.nav nav{display:flex;gap:35px;color:#657087;font-size:14px;font-weight:650}.nav nav a{height:78px;display:flex;align-items:center;border-bottom:3px solid transparent}.nav nav a:hover,.nav nav a.active{color:var(--blue);border-color:var(--blue)}.menu-button{display:none;border:0;background:none;font-size:25px;color:var(--navy)}.home-hero{min-height:635px;background:linear-gradient(118deg,#f8f9fd 0 58%,#edf2ff 58%)}.hero-grid{min-height:635px;display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:80px}.eyebrow{font-size:11px;font-weight:850;letter-spacing:.18em;color:var(--blue)}h1,h2,h3,p{margin-top:0}.home-hero h1,.page-hero h1{font-size:60px;line-height:1.06;letter-spacing:-.055em;color:var(--navy);margin:24px 0}.home-hero h1 em,.page-hero h1 em{font-style:normal;color:var(--blue)}.home-hero p,.page-hero p{max-width:650px;color:var(--muted);font-size:17px;line-height:1.7}.hero-actions{display:flex;gap:12px;margin:32px 0}.button{padding:15px 20px;border-radius:11px;font-size:14px;font-weight:750}.button.primary{background:var(--blue);color:#fff;box-shadow:0 10px 26px #2d65d740}.button.secondary{background:#fff;border:1px solid #cfd6e3}.stats{display:flex;gap:38px;border-top:1px solid var(--line);padding-top:24px}.stats div{display:flex;flex-direction:column}.stats strong{font-size:22px}.stats span{font-size:10px;color:#7c869c}.math-card{height:400px;border-radius:34px;background:linear-gradient(145deg,#172b67,#3159b0);box-shadow:0 35px 70px #172b6730;position:relative;display:grid;place-items:center;color:#fff;font:65px Georgia;overflow:hidden}.math-card:before,.math-card:after{content:"";position:absolute;border:1px solid #ffffff25;border-radius:50%;width:320px;height:320px}.math-card:after{width:210px;height:210px}.math-card small{font-size:35px}.bubble{position:absolute;padding:12px 15px;border-radius:11px;background:#fff;color:var(--navy);font:13px ui-monospace;box-shadow:0 10px 22px #0003}.bubble.one{left:28px;top:48px}.bubble.two{right:26px;top:170px}.bubble.three{left:40px;bottom:58px}.home-section{padding:82px 0}.home-section h2{font-size:36px;color:var(--navy);margin:12px 0 30px}.choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.choice-card{border:1px solid var(--line);border-radius:20px;padding:32px;transition:.25s}.choice-card:hover,.exercise-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px #23305a18}.choice-icon{display:grid;width:48px;height:48px;place-items:center;border-radius:13px;background:#eef3ff;color:var(--blue);font-size:23px}.choice-card.coral .choice-icon{background:#fff0ec;color:var(--coral)}.choice-card small{display:block;margin:25px 0 10px;font-size:9px;letter-spacing:.15em;color:#8a93a6;font-weight:800}.choice-card h3{font-size:24px;color:var(--navy);margin-bottom:10px}.choice-card p{color:var(--muted);font-size:14px;line-height:1.65}.choice-card b{font-size:13px;color:var(--blue)}.choice-card.coral 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button.selected{background:var(--navy);border-color:var(--navy);color:#fff}.theme-group{margin-bottom:55px}.theme-title{display:flex;align-items:center;gap:13px;margin-bottom:18px}.theme-title>span{width:45px;height:45px;display:grid;place-items:center;border-radius:12px;background:var(--navy);color:#fff;font-size:22px}.theme-title h2{margin:0;color:var(--navy);font-size:24px}.theme-title p{margin:4px 0 0;font-size:11px;color:var(--muted)}.exercise-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.exercise-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;transition:.2s;box-shadow:0 8px 25px #26325109}.card-top{display:flex;justify-content:space-between;font-size:10px;color:#8b94a6}.card-top .year{color:var(--blue);background:#edf3ff;padding:5px 8px;border-radius:7px;font-weight:800}.exercise-card h3{font-size:20px;color:var(--navy);margin:18px 0 8px}.exercise-card>p{font-size:12px;line-height:1.55;color:var(--muted);min-height:38px}.exercise-card>small{font-size:9px;background:#f4f6f9;color:#8992a5;padding:6px 8px;border-radius:6px}.card-actions{display:flex;gap:8px;margin-top:20px}.card-actions a{flex:1;background:var(--blue);color:#fff;padding:10px 8px;text-align:center;border-radius:9px;font-size:11px;font-weight:750}.card-actions a.correction{background:#e6f7f1;color:#08795b}.empty{background:#fff;border:1px dashed #cad2e1;border-radius:15px;padding:60px;text-align:center;color:var(--muted)}.tip{background:#fff8e8;border:1px solid #f3dda7;border-radius:12px;padding:16px 20px;font-size:12px;color:#725923;margin-bottom:28px}.exam-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.exam-card{background:#fff;border:1px solid var(--line);border-radius:18px;display:flex;overflow:hidden;box-shadow:0 8px 25px 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/* FAQ */
.faq-hero{padding:52px 0}.faq-hero-grid{display:grid;grid-template-columns:1fr 210px;align-items:center;gap:50px}.faq-hero-mark{width:170px;height:170px;margin-left:auto;display:grid;place-items:center;border-radius:42px;background:linear-gradient(145deg,var(--navy),var(--blue));color:#fff;font:800 92px Georgia;box-shadow:0 24px 55px #172b6730;transform:rotate(4deg)}.faq-content{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:42px;padding:52px 0 85px;align-items:start}.faq-tools{border-bottom:1px solid var(--line);margin-bottom:30px}.faq-search{width:100%;margin-bottom:16px}.faq-filters{margin:0 0 22px}.faq-heading{display:flex;justify-content:space-between;align-items:end;margin-bottom:18px}.faq-heading h2{font-size:30px;color:var(--navy);margin:8px 0 0}.faq-count{font-size:12px;font-weight:750;color:var(--muted)}.faq-list{display:grid;gap:12px}.faq-item{border:1px solid var(--line);border-radius:15px;background:#fff;overflow:hidden;box-shadow:0 7px 22px #26325108}.faq-question{width:100%;border:0;background:#fff;padding:20px 22px;display:flex;align-items:center;justify-content:space-between;gap:20px;color:var(--navy);font:750 15px/1.45 inherit;text-align:left;cursor:pointer}.faq-question span{display:grid;gap:5px}.faq-question small{color:var(--blue);font-size:9px;letter-spacing:.12em;text-transform:uppercase}.faq-question b{width:30px;height:30px;flex:0 0 auto;display:grid;place-items:center;border-radius:50%;background:#edf3ff;color:var(--blue);font-size:20px}.faq-question:hover,.faq-question[aria-expanded="true"]{background:#f8faff}.faq-answer{padding:0 22px 20px;border-top:1px solid #eef1f6;background:#f8faff}.faq-answer p{margin:16px 0 0;color:var(--muted);font-size:14px;line-height:1.75}.question-panel{position:sticky;top:102px;border-radius:22px;padding:28px;background:var(--navy);color:#fff;box-shadow:0 24px 55px #172b6725}.question-panel .eyebrow{color:#93b5ff}.question-panel h2{font-size:25px;line-height:1.25;margin:12px 0}.question-panel>p{color:#c4cee6;font-size:13px;line-height:1.65;margin-bottom:22px}.question-icon{width:45px;height:45px;display:grid;place-items:center;border-radius:12px;background:#ffffff15;color:#fff;font-size:22px;margin-bottom:22px}.question-panel form{display:grid;gap:7px}.question-panel label{font-size:11px;font-weight:750;color:#d7def0;margin-top:8px}.question-panel input,.question-panel select,.question-panel textarea{width:100%;border:1px solid #ffffff25;border-radius:10px;background:#ffffff0e;color:#fff;padding:12px;font:13px inherit;outline:none}.question-panel select option{color:var(--ink)}.question-panel input::placeholder,.question-panel textarea::placeholder{color:#aab6d1}.question-panel input:focus,.question-panel select:focus,.question-panel textarea:focus{border-color:#8eb0ff;box-shadow:0 0 0 3px #6f9aff20}.submit-question{border:0;cursor:pointer;margin-top:12px;width:100%}.form-note{color:#95a4c5!important;font-size:9px!important;text-align:center;margin:2px 0 0!important}.question-status{min-height:18px;color:#9fe7ce!important;font-size:11px!important;font-weight:700;margin:2px 0 0!important}.pending-questions{border-top:1px solid #ffffff20;margin-top:18px;padding-top:18px}.pending-questions:empty{display:none}.pending-questions h3{font-size:13px;margin:0 0 10px}.pending-item{display:grid;gap:4px;padding:11px;border-radius:9px;background:#ffffff0c;margin-top:7px}.pending-item span{width:max-content;padding:3px 6px;border-radius:5px;background:#ffca6630;color:#ffdc97;font-size:8px;font-weight:800;text-transform:uppercase}.pending-item strong{font-size:11px;line-height:1.4}.pending-item small{color:#96a4c3;font-size:9px}
@media(max-width:900px){.faq-content{grid-template-columns:1fr}.question-panel{position:static}.faq-hero-grid{grid-template-columns:1fr 130px}.faq-hero-mark{width:120px;height:120px;border-radius:30px;font-size:66px}}
@media(max-width:560px){.nav nav{flex-wrap:wrap}.nav nav a{padding:0 8px}.faq-hero-grid{grid-template-columns:1fr}.faq-hero-mark{display:none}.faq-content{padding-top:32px}.faq-heading{align-items:start}.faq-question{padding:17px}.question-panel{padding:22px}}
.form-trap{position:absolute!important;width:1px!important;height:1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important}.submit-question[disabled]{cursor:wait;opacity:.65}