:root{--paper:#f7f6ef;--white:#fffefb;--ink:#243b43;--muted:#6a7979;--line:#dce0d5;--teal:#367f6a;--soft:#e8efdf;--gold:#e5b567}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}button,input,a{font:inherit;touch-action:manipulation}a{color:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.55}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #c18524;outline-offset:4px}button{border:0}h1,h2,h3{line-height:1.14;letter-spacing:-.035em;margin:0 0 18px}h1{font-size:clamp(36px,4.3vw,58px)}h2{font-size:30px}h3{font-size:23px}p{margin:0 0 18px}.header,main,footer{max-width:1180px;margin:auto;padding:24px 36px}.header{display:flex;align-items:center;gap:22px;flex-wrap:wrap}.brand{text-decoration:none;font-size:22px;display:flex;gap:11px;align-items:center;letter-spacing:-.04em}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;color:white;background:var(--ink);font-size:18px;font-weight:750}.edition{border:1px solid var(--line);border-radius:30px;padding:5px 12px;font-size:11px;margin-right:auto}.eyebrow{color:var(--teal);font-size:11px;letter-spacing:.12em;text-transform:uppercase;font-weight:750;margin-bottom:18px}.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:13px 21px;border-radius:12px;text-decoration:none;font-weight:650;line-height:1.4}.primary{color:white;background:var(--ink)}.primary:hover{background:#35535b}.secondary{background:var(--white);border:1px solid var(--line);color:var(--ink)}.text-button{background:transparent;padding:10px 4px;color:var(--muted);min-height:44px;text-decoration:none;font-size:13px}.preview-note{border:1px solid #d6dbcc;background:#edf0e5;padding:13px 18px;border-radius:12px;font-size:13px;margin:5px 0 30px;color:#526753}.intro{display:grid;grid-template-columns:1.1fr .9fr;gap:75px;align-items:center;padding:35px 0 60px}.intro .lead{font-size:19px;color:var(--muted);max-width:490px}.tags{display:flex;gap:8px;flex-wrap:wrap;margin:25px 0}.tags span{font-size:12px;background:#eeece1;border-radius:8px;padding:6px 10px}.auth-card,.card{background:var(--white);border:1px solid var(--line);border-radius:23px;padding:28px}.auth-card h2{font-size:29px}.auth-tabs{display:flex;gap:20px;border-bottom:1px solid var(--line);margin-bottom:22px}.auth-tabs button{background:transparent;font-size:13px;padding:10px 0;color:var(--muted)}.auth-tabs button.active{border-bottom:2px solid var(--teal);color:var(--teal);font-weight:750}label.field{display:flex;flex-direction:column;gap:7px;font-size:13px;color:var(--muted);margin:16px 0}input{width:100%;border:1px solid #bac4b9;border-radius:11px;background:white;min-height:52px;padding:10px 14px;color:var(--ink);font-size:17px}input[type=checkbox]{width:20px;min-height:20px;accent-color:var(--teal)}.consent{display:flex;gap:10px;align-items:flex-start;font-size:12px}.auth-card .primary{width:100%;margin:10px 0}.auth-caption{font-size:12px;color:var(--muted)}.message{padding:13px 16px;border-radius:11px;background:#edf3e8;font-size:14px;margin:15px 0}.message.error{background:#fbede3;color:#8a4738}.dashboard-title{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin:20px 0 30px}.dashboard-title p{font-size:14px;color:var(--muted);max-width:300px}.dashboard-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:22px}.course-card{padding:30px;position:relative;overflow:hidden}.card-top{display:flex;justify-content:space-between;gap:15px;font-size:11px;color:var(--muted);margin-bottom:24px}.badge{display:inline-block;padding:4px 10px;background:var(--soft);color:var(--teal);font-size:11px;border-radius:20px;white-space:nowrap}.course-card h2{font-size:38px;max-width:330px}.course-description{color:var(--muted);max-width:400px;font-size:15px}.fraction-art{display:flex;align-items:center;gap:18px;font-size:37px;padding:15px 0 24px}.fraction{display:inline-flex;flex-direction:column;align-items:center;font-size:30px;line-height:1.1;min-width:36px}.fraction span:first-child{border-bottom:1.5px solid var(--ink);padding:0 6px 5px}.fraction span:last-child{padding-top:5px}.study-meter{height:7px;border-radius:5px;background:#e3e8dc;overflow:hidden;margin:12px 0}.study-meter>span{height:100%;display:block;background:var(--teal);border-radius:5px}.meter-label{display:flex;justify-content:space-between;gap:15px;font-size:12px;color:var(--muted);margin-bottom:23px}.course-card .primary{width:100%}.small-note{font-size:12px;color:var(--muted);margin:14px 0 0}.side-stack{display:grid;gap:22px;align-content:start}.stats{display:flex;gap:30px}.stat b{font-size:37px;line-height:1}.stat span{display:block;font-size:12px;color:var(--muted);margin-top:8px}.skill-list{padding:0;margin:5px 0 0;list-style:none}.skill-list li{border-top:1px solid var(--line);padding:14px 0}.skill-list a{display:flex;align-items:center;justify-content:space-between;gap:15px;font-size:14px;text-decoration:none}.skill-list small{display:block;color:var(--muted);font-size:11px;margin-top:3px}.empty{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:0}.bottom-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin:22px 0}.soon-label{font-size:10px;text-transform:uppercase;letter-spacing:.12em;color:var(--teal);margin-bottom:15px}.soon-card{background:#eef0e5}.soon-card p{font-size:14px;color:var(--muted)}.soon-topics{display:flex;gap:8px;flex-wrap:wrap}.soon-topics span{background:#fffefb;border:1px solid var(--line);border-radius:30px;padding:5px 12px;font-size:12px}.purchase{padding:14px 0;border-top:1px solid var(--line);font-size:13px}.purchase>div{display:flex;justify-content:space-between;gap:12px}.purchase p{font-size:11px;color:var(--muted);margin:4px 0}.import-card{margin-top:22px}.import-card h3{font-size:19px}.import-card p{font-size:13px;color:var(--muted)}.import-card input{font-size:13px;min-height:44px}.payment-status{padding:18px;border:1px solid var(--line);background:#fffefb;border-radius:14px;margin-bottom:25px}footer{display:flex;justify-content:space-between;gap:20px;border-top:1px solid var(--line);margin-top:40px;font-size:11px;color:var(--muted);flex-wrap:wrap}.loading{text-align:center;padding:90px 15px}.auth-only{max-width:470px;margin:40px auto}.legal{font-size:12px;color:var(--muted)}.legal a{margin-right:15px}@media(max-width:800px){.intro{gap:35px}.dashboard-grid{grid-template-columns:1.2fr 1fr}.header,main,footer{padding:20px 24px}}@media(max-width:600px){.header,main,footer{padding:18px 20px}.header{gap:10px}.brand{font-size:19px}.brand-mark{width:30px;height:30px;font-size:16px}.edition{font-size:9px;padding:5px 9px}.header #user-nav{margin-left:auto}.header #user-nav .text-button{font-size:11px}.preview-note{font-size:11px;padding:12px 14px;margin:0 0 25px}.intro{display:flex;flex-direction:column;gap:24px;padding:14px 0 25px;align-items:stretch}.intro h1{font-size:39px}.intro .lead{font-size:16px}.auth-card,.card{padding:22px;border-radius:19px}.auth-card h2{font-size:26px}.dashboard-title{display:block;margin:10px 0 25px}.dashboard-title h1{font-size:36px}.dashboard-title p{font-size:13px;max-width:none}.dashboard-grid,.bottom-grid{display:flex;flex-direction:column;gap:16px}.side-stack{gap:16px}.course-card h2{font-size:32px}.course-description{font-size:14px}.card-top{margin-bottom:18px;gap:8px;font-size:10px}.fraction-art{font-size:31px;padding:10px 0 22px}.fraction{font-size:27px}.meter-label{font-size:11px}.card h3{font-size:22px}.stats{gap:42px}.stat b{font-size:34px}.bottom-grid{margin-top:16px}.skill-list a{font-size:13px}.import-card{margin-top:16px}.import-card h3{font-size:19px}footer{font-size:10px;margin-top:25px}.auth-only{margin-top:20px}.auth-tabs{gap:24px}.auth-caption{font-size:11px}}@media(max-width:350px){.header,main,footer{padding:16px}.brand{font-size:17px;gap:7px}.edition{font-size:8px}.intro h1{font-size:35px}.dashboard-title h1{font-size:33px}.card,.auth-card{padding:19px}.card-top{flex-wrap:wrap}.course-card h2{font-size:30px}}

.footer-links{display:flex;gap:18px;flex-wrap:wrap;align-content:start}