.home-nav{display:flex;gap:10px;align-items:center}.home-nav a{padding:9px 11px;color:#526176;font-size:13px}.public-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.public-header .inner{max-width:1240px;margin:auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px}.public-brand{display:flex;align-items:center;gap:10px;font-weight:900;color:var(--navy)}.public-brand span{font-size:12px;color:var(--muted);display:block;font-weight:600}.public-hero{background:linear-gradient(135deg,#071d39,#2563eb);color:#fff;padding:70px 24px}.public-hero .inner{max-width:1240px;margin:auto}.public-hero h1{font-size:54px;line-height:1.05;max-width:760px;margin:0 0 18px}.public-hero p{font-size:17px;color:#dbeafe;max-width:680px;line-height:1.7}.public-section{max-width:1240px;margin:auto;padding:45px 24px}.subject-card{padding:22px;min-height:150px}.subject-icon{width:44px;height:44px;border-radius:13px;background:#eef4ff;display:grid;place-items:center;color:var(--blue);font-weight:900}.price{font-size:28px;font-weight:900}.store-layout{display:grid;grid-template-columns:1.5fr .8fr;gap:18px}.checkout-box{position:sticky;top:90px;padding:22px}.alert{padding:13px 15px;border-radius:12px;background:#fff8e7;color:#8a5a00;font-size:13px}.auth-note{font-size:12px;color:var(--muted);margin-top:10px}@media(max-width:900px){.home-nav{display:none}.public-hero h1{font-size:40px}.store-layout{grid-template-columns:1fr}}