:root{--text:#17202a;--muted:#64748b;--line:#dfe3e8;--soft:#f7f8fa;--primary:#1769e0;--primary-dark:#0e54ba;--danger:#b42318}
*{box-sizing:border-box}
html{color-scheme:light}
body{margin:0;background:#fff;color:var(--text);font:16px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
a{color:var(--primary)}
.topbar{border-bottom:1px solid var(--line);background:#fff}
.topbar-inner{width:min(100% - 32px,960px);min-height:64px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{color:var(--text);font-weight:750;text-decoration:none}
.support-link{font-size:14px}
main{width:min(100% - 32px,960px);margin:0 auto;padding:32px 0 56px}
.page-title{margin-bottom:24px}
h1{margin:0 0 8px;font-size:clamp(24px,3vw,32px);line-height:1.2;letter-spacing:-.02em}
.page-title p,.section-note{margin:0;color:var(--muted)}
.https-warning{margin-bottom:18px;padding:13px 15px;border:1px solid #f0c36a;border-radius:9px;background:#fff9e8;color:#684d16;font-size:14px}
.checkout-card{border:1px solid var(--line);border-radius:14px;background:#fff;overflow:hidden}
.form-section{margin:0;padding:24px;border:0;border-bottom:1px solid var(--line)}
.form-section legend{float:left;width:100%;padding:0;margin:0 0 6px;font-size:19px;font-weight:750}
.form-section>*:not(legend){clear:both}
.section-note{font-size:14px;margin-bottom:18px!important}
.courses{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}
.course-option{position:relative;display:block;cursor:pointer}
.course-option input{position:absolute;left:14px;top:17px;width:18px;height:18px;margin:0;accent-color:var(--primary)}
.course-option span{display:flex;min-height:70px;padding:14px 12px 12px 42px;border:1px solid var(--line);border-radius:10px;flex-direction:column;justify-content:center;gap:2px;background:#fff}
.course-option small{color:var(--muted)}
.course-option.selected span{border-color:var(--primary);background:#f4f8ff;box-shadow:0 0 0 1px var(--primary)}
.empty-state{padding:18px;border:1px dashed #c9d0d8;border-radius:10px;color:var(--muted);text-align:center;background:var(--soft)}
.class-group{border:1px solid var(--line);border-radius:12px;margin-top:14px;overflow:hidden}
.class-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 16px;background:var(--soft);border-bottom:1px solid var(--line)}
.class-heading h3{font-size:17px;margin:0}.class-heading span{font-size:13px;color:var(--muted)}
.student-row{padding:16px;border-bottom:1px solid var(--line)}
.student-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.student-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px 16px}
.field{display:block;font-size:14px;font-weight:650}
.field input{display:block;width:100%;height:44px;margin-top:6px;padding:9px 11px;border:1px solid #c8ced6;border-radius:8px;background:#fff;color:var(--text);font:inherit}
.field input:focus{outline:3px solid #1769e026;border-color:var(--primary)}
.field small{display:block;margin-top:5px;color:var(--muted);font-size:12px;font-weight:400}
.remove-student,.add-student{border:0;background:none;color:var(--primary);font:inherit;font-weight:650;cursor:pointer}
.remove-student{color:var(--danger);font-size:13px}
.add-student{padding:14px 16px;text-align:left}.add-student:disabled{opacity:.45;cursor:not-allowed}
.consent-row{padding:20px 24px 0}
.consent-row label{display:flex;gap:10px;align-items:flex-start;font-size:14px}.consent-row input{width:18px;height:18px;margin:2px 0 0;flex:0 0 auto;accent-color:var(--primary)}
.order-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 24px}
.order-bar>div{display:flex;flex-direction:column}.order-bar small{color:var(--muted)}.order-bar strong{font-size:26px}
button,.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;border:0;border-radius:8px;padding:10px 20px;background:var(--primary);color:#fff;text-decoration:none;font:inherit;font-weight:700;cursor:pointer}
button:hover,.button:hover{background:var(--primary-dark)}button:disabled{opacity:.45;cursor:not-allowed}
.demo-note{margin:0 24px 24px;padding:12px 14px;border:1px solid #d9e5f7;border-radius:8px;background:#f6f9fe;color:#41536a;font-size:13px}
.instructions{margin-top:20px;padding:20px 22px;border:1px solid var(--line);border-radius:12px;background:var(--soft)}
.instructions h2{font-size:18px;margin:0 0 10px}.instructions ol{margin:0;padding-left:22px}.instructions li+li{margin-top:5px}.instructions p{margin:10px 0 0;color:var(--muted);font-size:14px}
.center{width:min(100% - 32px,680px);min-height:100vh;margin:auto;display:grid;place-items:center;padding:32px 0}
.checkout.narrow{width:100%;padding:28px;border:1px solid var(--line);border-radius:14px;background:#fff}
.narrow h1{font-size:30px}.eyebrow{margin:0 0 8px;color:var(--muted);font-size:12px;font-weight:750;text-transform:uppercase;letter-spacing:.08em}
.receipt{display:flex;justify-content:space-between;gap:20px;margin:22px 0;padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:20px}
.check{display:grid;width:52px;height:52px;margin-bottom:16px;place-items:center;border-radius:50%;background:#e9f7ef;color:#14753a;font-size:28px}
.accounts{margin:20px 0;padding:4px 16px;border-left:3px solid var(--primary);background:var(--soft)}.accounts p{margin:12px 0}
.status-card ol{padding-left:22px}.help{margin-top:24px;color:var(--muted)}
@media(max-width:820px){main{padding-top:24px}.courses{grid-template-columns:repeat(3,minmax(0,1fr))}.form-section{padding:20px}.consent-row{padding:18px 20px 0}.order-bar{padding:18px 20px}.demo-note{margin:0 20px 20px}}
@media(max-width:560px){.topbar-inner,main{width:min(100% - 24px,960px)}.topbar-inner{min-height:56px}.support-link{font-size:13px}main{padding:20px 0 36px}.page-title{margin-bottom:18px}.page-title p{font-size:14px}.checkout-card{border-radius:10px}.form-section{padding:18px 14px}.form-section legend{font-size:18px}.courses{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.course-option span{min-height:64px}.student-grid{grid-template-columns:1fr;gap:12px}.student-row{padding:14px}.class-heading{padding:12px 14px}.consent-row{padding:16px 14px 0}.order-bar{align-items:stretch;flex-direction:column;padding:16px 14px}.order-bar button{width:100%}.demo-note{margin:0 14px 14px}.instructions{padding:18px 16px}.checkout.narrow{padding:20px}.narrow h1{font-size:26px}}
@media(min-width:1280px){main{padding-top:40px}.checkout-card{border-radius:16px}}