:root{
  --bg:#f6f7fb;--text:#121826;--muted:#667085;--line:#e4e7ec;--brand:#5b4df7;--brand2:#2f2a75;--white:#fff;--dark:#111827;
}
*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}
a{color:inherit;text-decoration:none}.container{width:min(1180px,92%);margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between}.brand{font-size:24px;font-weight:900;letter-spacing:-1px}.brand span{color:var(--brand)}
nav{display:flex;gap:22px;align-items:center}nav a,.link-button{font-weight:650;color:#344054}.inline-form{display:inline}.link-button{border:0;background:none;cursor:pointer;font-size:inherit}
.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--brand);color:white;border:0;border-radius:12px;padding:14px 20px;font-weight:800;cursor:pointer}.btn.small{padding:10px 14px}.btn.secondary{background:#fff;color:var(--dark);border:1px solid var(--line)}.btn.full{width:100%}
.hero{padding:86px 0;background:linear-gradient(135deg,#f8f7ff,#eef1ff)}.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:56px;align-items:center}.hero h1{font-size:64px;line-height:.98;letter-spacing:-3px;margin:14px 0 20px}.hero p,.lead{font-size:20px;line-height:1.6;color:var(--muted)}.eyebrow{font-size:12px;letter-spacing:1.6px;font-weight:900;color:var(--brand)}.actions{display:flex;gap:12px;margin:28px 0}.commission-box{display:flex;flex-direction:column;gap:5px;padding:16px 18px;background:#fff;border:1px solid var(--line);border-radius:14px;max-width:510px}.commission-box span{color:var(--muted);font-size:14px}
.hero-card,.buy-card,.auth-card,.panel,.stat{background:var(--white);border:1px solid var(--line);box-shadow:0 12px 30px rgba(16,24,40,.05)}.hero-card{padding:32px;border-radius:24px}.hero-card h3{font-size:28px}.hero-card li{padding:9px 0;color:#475467}.pill{display:inline-block;background:#eeecff;color:var(--brand);padding:7px 10px;border-radius:999px;font-size:12px;font-weight:900}
.section,.dashboard{padding:64px 0}.section-title,.dash-head,.panel-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:28px}.section-title h1,.section-title h2,.dash-head h1{margin:8px 0 0;font-size:40px;letter-spacing:-1.5px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.course-card{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:.18s transform,.18s box-shadow}.course-card:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(16,24,40,.08)}.course-thumb{height:170px;background:linear-gradient(135deg,#26215f,#7267ff);display:flex;align-items:flex-end;padding:18px}.course-thumb span{background:rgba(255,255,255,.16);color:white;padding:7px 10px;border-radius:999px;font-size:12px;font-weight:800}.course-body{padding:20px}.course-body h3{margin:0 0 8px;font-size:20px}.course-body p{margin:0 0 18px;color:var(--muted)}.course-meta{display:flex;justify-content:space-between;font-weight:850}.search{display:flex;gap:10px;margin-bottom:28px}.search input{flex:1}
input,select,textarea{width:100%;padding:13px 14px;border:1px solid #d0d5dd;border-radius:10px;background:#fff;font:inherit}label{display:flex;flex-direction:column;gap:7px;font-weight:700;color:#344054}
.auth-wrap{min-height:70vh;display:grid;place-items:center;padding:60px 20px}.auth-card{width:min(520px,100%);padding:34px;border-radius:22px;display:grid;gap:18px}.auth-card.wide{width:min(700px,100%)}.auth-card h1{margin:0;font-size:36px}.alert{background:#fff1f0;color:#b42318;border:1px solid #fecdca;padding:12px;border-radius:10px}.notice{background:#f2f4f7;color:#475467;padding:14px;border-radius:10px;font-size:14px}.muted{font-size:13px;color:var(--muted);line-height:1.5}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:28px 0}.stat{padding:22px;border-radius:16px;display:flex;flex-direction:column;gap:8px}.stat span{color:var(--muted);font-size:13px}.stat strong{font-size:27px}.panel{padding:24px;border-radius:18px;margin-top:18px}.table{display:grid}.row{display:grid;grid-template-columns:1fr auto auto;gap:18px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}.row:last-child{border-bottom:0}.empty{padding:30px 0;color:var(--muted)}
.detail-grid{display:grid;grid-template-columns:1fr 360px;gap:50px;align-items:start}.buy-card{padding:24px;border-radius:18px;position:sticky;top:100px}.price{font-size:38px;font-weight:900;margin-bottom:18px}.buy-card small{display:block;color:var(--muted);line-height:1.5;margin-top:12px}.info-grid{display:flex;gap:50px;margin-top:30px}.info-grid div{display:flex;flex-direction:column}.info-grid strong{font-size:26px}.info-grid span{color:var(--muted)}.progress{height:8px;background:#eaecf0;border-radius:999px;margin:14px 0 7px;overflow:hidden}.progress i{display:block;height:100%;background:var(--brand)}
.footer{padding:38px 0;background:#111827;color:#f9fafb}.footer-grid{display:flex;justify-content:space-between;gap:30px}.footer span,.footer-grid>div:last-child{color:#98a2b3}
@media(max-width:850px){.hero-grid,.detail-grid{grid-template-columns:1fr}.hero h1{font-size:46px}.cards{grid-template-columns:1fr 1fr}.stats-grid{grid-template-columns:1fr 1fr}.buy-card{position:static}}
@media(max-width:580px){nav a:not(.btn),nav form{display:none}.hero{padding:55px 0}.hero h1{font-size:40px}.cards,.stats-grid{grid-template-columns:1fr}.section-title,.dash-head{align-items:flex-start;flex-direction:column}.row{grid-template-columns:1fr}.footer-grid{flex-direction:column}.actions{flex-direction:column}}