@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700&family=Inter:wght@300;400;500&display=swap');
:root{--brand-blue:#1A73E8;--card:#F9FAFB;--accent-math:#e3f0ff;--accent-english:#fff0ec;--accent-physics:#eefef0;--accent-chem:#fffef6}
*{box-sizing:border-box}body{font-family:'Inter',sans-serif;margin:0;background:linear-gradient(180deg,#ffffff,#f4f7ff);color:#111;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:var(--brand-blue)}header{background:linear-gradient(135deg,var(--brand-blue),#4A6FA5);color:#fff;padding:28px 16px;text-align:center}header img{width:96px;display:block;margin:0 auto 8px}
nav{display:flex;gap:14px;justify-content:center;padding:12px 16px;background:rgba(255,255,255,0.9);backdrop-filter:blur(4px);position:sticky;top:0;border-bottom:1px solid #eceff6;z-index:40}
nav a{text-decoration:none;color:var(--brand-blue);font-weight:600;font-family:'Montserrat',sans-serif}
.hero{background-image:url('https://images.pexels.com/photos/4145190/pexels-photo-4145190.jpeg');background-size:cover;background-position:center;padding:110px 16px;color:#fff;position:relative;display:flex;align-items:center}
.hero::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0.28),rgba(0,0,0,0.12))}
.hero .inner{position:relative;z-index:2;max-width:980px;margin:0 auto;text-align:center}
.hero h1{font-family:'Montserrat',sans-serif;font-size:40px;margin:0 0 12px}
.hero p{font-size:18px;margin:0 auto;max-width:760px}
.cta{margin-top:18px;padding:12px 22px;background:var(--brand-blue);border:none;color:#fff;border-radius:8px;cursor:pointer;font-family:'Montserrat';box-shadow:0 8px 20px rgba(26,115,232,0.18)}
.page{padding:48px 16px;max-width:1100px;margin:0 auto}
h2{font-family:'Montserrat',sans-serif;color:var(--brand-blue);font-size:28px;margin-bottom:12px}
.card{background:var(--card);padding:20px;border-radius:12px;border:1px solid #e7eefc;box-shadow:0 8px 24px rgba(13,38,69,0.04);margin-bottom:24px}
.subjects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}
.subject-card{padding:18px;border-radius:12px;display:flex;flex-direction:column;align-items:flex-start;gap:12px;transition:transform .28s ease,box-shadow .28s ease}
.subject-card img{width:64px;height:64px}
.subject-card:hover{transform:translateY(-6px);box-shadow:0 12px 30px rgba(13,38,69,0.06)}
.sub-math{background:linear-gradient(135deg,var(--accent-math),#eef6ff)}.sub-english{background:linear-gradient(135deg,var(--accent-english),#fff4f3)}.sub-physics{background:linear-gradient(135deg,var(--accent-physics),#f3fff6)}.sub-chem{background:linear-gradient(135deg,var(--accent-chem),#fff8ea)}
.section-divider{height:2px;background:#e6e9ef;margin:36px 0;border-radius:2px}
.pricing-banner{background:var(--brand-blue);color:#fff;padding:12px;border-radius:8px;text-align:center;margin-bottom:12px;font-family:'Montserrat'}
.pricing-table{width:100%;border-collapse:collapse}
.pricing-table th{background:var(--brand-blue);color:#fff;padding:10px;font-family:'Montserrat'}
.pricing-table td{background:#F8FAFD;padding:12px;text-align:center}
.fade-in{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.fade-in.show{opacity:1;transform:translateY(0)}
.nav-anchor{cursor:pointer}
.footer{background:var(--brand-blue);color:#fff;padding:18px;text-align:center;margin-top:28px}

/* parallax */
.hero{background-attachment:fixed}

/* floating shapes */
.floating-shape{position:fixed;top:-120px;width:160px;height:160px;border-radius:50%;filter:blur(26px);pointer-events:none;opacity:.6;z-index:1}

/* responsive */
@media(max-width:800px){.hero{padding:64px 12px}.hero h1{font-size:26px}.page{padding:28px 12px}.subjects-grid{grid-template-columns:1fr}}