:root{--p:#f7bd3f;--pd:#d99a1f;--goldd:#b5811f;--teal:#187253;--grn:#187253;--org:#f7bd3f;--dark:#0c1932;--dark2:#16233f;--text:#374151;--muted:#6b7280;--border:#e5e7eb;--bg:#f8fafc}
*{margin:0;padding:0;box-sizing:border-box}
h1,h2,h3,h4{font-family:'Inter',ui-sans-serif,-apple-system,"system-ui","Segoe UI",sans-serif;letter-spacing:-.02em}
body{font-family:'Source Sans 3',Arial,sans-serif;color:var(--text);background:#fff;line-height:1.6}
a{text-decoration:none;color:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.tc{text-align:center}
.stag{display:inline-flex;align-items:center;gap:6px;background:rgba(247,189,63,.1);color:var(--p);border:1px solid rgba(247,189,63,.2);padding:6px 14px;border-radius:30px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:1px;margin-bottom:14px}
.stitle{font-size:clamp(28px,4vw,42px);font-weight:900;color:var(--dark);line-height:1.15;margin-bottom:16px}
.ssub{font-size:16px;color:var(--muted);max-width:600px;margin:0 auto 40px}
section{padding:80px 5%}
/* NAV */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;padding:14px 5%;display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:all .3s}
.nav.scrolled{border-color:var(--border);box-shadow:0 2px 20px rgba(0,0,0,.06)}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:18px;font-weight:900;color:var(--dark2);font-family:'Inter',ui-sans-serif,sans-serif}
.nav-logo .logo-icon{width:44px;height:44px}
.nav-logo .logo-text{display:flex;flex-direction:column;line-height:1.1}
.nav-logo .logo-name{font-size:20px;font-weight:900;color:var(--dark);letter-spacing:-.02em}
.nav-logo .logo-sub{font-size:10px;color:var(--muted);font-weight:500;letter-spacing:.5px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{padding:8px 14px;border-radius:8px;font-size:14px;font-weight:500;color:var(--text);transition:all .2s}
.nav-link:hover{background:var(--bg);color:var(--dark)}
.nav-link.active{color:var(--p);background:rgba(247,189,63,.08)}
.btn-nav{background:linear-gradient(135deg,var(--p),var(--pd));color:#fff!important;padding:9px 20px!important;border-radius:10px;font-weight:700!important;transition:all .2s!important}
.btn-nav:hover{transform:translateY(-1px);box-shadow:0 4px 15px rgba(247,189,63,.4)!important}
.btn-primary{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--p),var(--pd));color:#fff;padding:12px 24px;border-radius:12px;font-weight:700;font-size:15px;transition:all .2s;border:none;cursor:pointer}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(247,189,63,.4)}
.btn-secondary{display:inline-flex;align-items:center;gap:8px;background:transparent;color:var(--p);padding:12px 24px;border-radius:12px;font-weight:700;font-size:15px;border:2px solid var(--p);transition:all .2s}
.btn-secondary:hover{background:rgba(247,189,63,.08)}
.btn-wa{display:inline-flex;align-items:center;gap:8px;background:#187253;color:#fff;padding:12px 24px;border-radius:12px;font-weight:700;font-size:15px;transition:all .2s}
.btn-wa:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(37,211,102,.4)}
/* Mobile nav */
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.hamburger span{width:22px;height:2px;background:var(--dark);border-radius:2px;transition:.3s}
.mob-menu{display:none;flex-direction:column;gap:4px;padding:12px 5%;background:rgba(255,255,255,.98);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.mob-menu.open{display:flex}
.mob-apchem{background:linear-gradient(135deg,var(--p),var(--pd))!important;color:#fff!important;border-radius:10px;text-align:center;margin-top:4px}
@media(max-width:768px){.nav-links{display:none}.hamburger{display:flex}}
/* HERO */
.hero{min-height:100vh;background:linear-gradient(135deg,#0c1932 0%,#16233f 40%,#16233f 70%,#0c1932 100%);display:flex;align-items:center;padding:100px 5% 60px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 20% 50%,rgba(247,189,63,.3),transparent 60%),radial-gradient(ellipse at 80% 20%,rgba(247,189,63,.15),transparent 50%)}
.orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.25;animation:orb-f 12s ease-in-out infinite}
.orb1{width:400px;height:400px;background:#f7bd3f;top:-100px;right:-100px;animation-delay:0s}
.orb2{width:300px;height:300px;background:#d99a1f;bottom:-80px;left:-80px;animation-delay:-5s}
.orb3{width:200px;height:200px;background:#f7bd3f;top:40%;right:20%;animation-delay:-9s}
@keyframes orb-f{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-30px) scale(1.1)}}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;max-width:1100px;margin:0 auto;position:relative;z-index:1}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(247,189,63,.15);border:1px solid rgba(247,189,63,.3);color:#f7bd3f;padding:7px 16px;border-radius:30px;font-size:13px;font-weight:600;margin-bottom:24px;backdrop-filter:blur(10px)}
.hero h1{font-size:clamp(36px,5vw,60px);font-weight:900;color:#fff;line-height:1.1;margin-bottom:20px}
.hero h1 span{color:#f7bd3f}
.hero-sub{font-size:17px;color:rgba(255,255,255,.65);margin-bottom:36px;line-height:1.7}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:40px}
.hero-stats{display:flex;gap:28px;flex-wrap:wrap}
.hstat{text-align:center}
.hstat-num{font-size:26px;font-weight:900;color:#fff}
.hstat-lbl{font-size:12px;color:rgba(255,255,255,.5);text-transform:uppercase;letter-spacing:.5px}
.hero-right{position:relative}
.platform-preview{background:rgba(255,255,255,.08);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.15);border-radius:20px;padding:28px;position:relative}
.pp-header{display:flex;align-items:center;gap:10px;margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.1)}
.pp-dot{width:10px;height:10px;border-radius:50%}
.pp-title{font-size:13px;font-weight:700;color:#fff;margin-left:8px}
.pp-metric{background:rgba(255,255,255,.06);border-radius:12px;padding:14px 16px;margin-bottom:10px;display:flex;align-items:center;justify-content:space-between}
.pp-metric-lbl{font-size:12px;color:rgba(255,255,255,.55)}
.pp-metric-val{font-size:18px;font-weight:800;color:#fff}
.pp-badge{background:rgba(247,189,63,.15);border:1px solid rgba(247,189,63,.3);border-radius:8px;padding:8px 14px;text-align:center;margin-top:14px}
.pp-badge-text{font-size:12px;color:#f7bd3f;font-weight:600}
.mol{position:absolute;font-size:32px;opacity:.12;animation:mol-float linear infinite;user-select:none}
@keyframes mol-float{0%{transform:translateY(100vh) rotate(0)}100%{transform:translateY(-100px) rotate(360deg)}}
/* FEATURES */
.features-g{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px;margin-top:40px}
.feat-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:24px;transition:.2s}
.feat-card:hover{border-color:rgba(247,189,63,.3);box-shadow:0 4px 20px rgba(247,189,63,.1);transform:translateY(-2px)}
.feat-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:14px}
.feat-title{font-size:15px;font-weight:800;color:var(--dark);margin-bottom:6px}
.feat-desc{font-size:13px;color:var(--muted);line-height:1.6}
/* HOW IT WORKS */
.steps-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:24px;margin-top:40px}
.step-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:28px 24px;text-align:center;position:relative}
.step-num{width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,var(--p),var(--pd));color:#fff;font-size:18px;font-weight:900;display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.step-title{font-size:14px;font-weight:800;color:var(--dark);margin-bottom:6px}
.step-desc{font-size:13px;color:var(--muted)}
/* COURSES */
.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;margin-top:36px}
.course-card{border-radius:16px;padding:24px;color:#fff;position:relative;overflow:hidden}
.course-badge{display:inline-block;background:rgba(255,255,255,.2);border-radius:20px;padding:4px 12px;font-size:11px;font-weight:700;margin-bottom:12px;backdrop-filter:blur(4px)}
.course-title{font-size:16px;font-weight:800;margin-bottom:6px}
.course-desc{font-size:12px;opacity:.75;line-height:1.5;margin-bottom:16px}
.course-meta{display:flex;gap:12px;font-size:11px;opacity:.75}
.course-meta span{display:flex;align-items:center;gap:4px}
/* ABOUT/TUTOR */
.about-g{display:grid;grid-template-columns:1fr 1.2fr;gap:60px;align-items:center;max-width:1000px;margin:0 auto}
.tutor-photo{width:100%;border-radius:20px;aspect-ratio:4/5;object-fit:cover}
.about-photo-wrap{position:relative}
.about-photo-wrap::after{content:'';position:absolute;inset:-8px;border-radius:24px;background:linear-gradient(135deg,var(--p),var(--pd));z-index:-1;opacity:.3}
.about-tag{display:inline-flex;align-items:center;gap:6px;background:rgba(247,189,63,.1);border:1px solid rgba(247,189,63,.2);color:var(--p);padding:6px 14px;border-radius:20px;font-size:12px;font-weight:700;margin-bottom:16px}
.about-list{list-style:none;display:flex;flex-direction:column;gap:10px;margin:20px 0}
.about-list li{display:flex;align-items:flex-start;gap:12px;font-size:14px;color:var(--text)}
.about-list li i{color:var(--grn);margin-top:2px;font-size:14px;flex-shrink:0}
/* PRICING */
.pricing-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px;max-width:900px;margin:40px auto 0}
.price-card{background:#fff;border:2px solid var(--border);border-radius:20px;padding:36px 32px;transition:.2s;position:relative}
.price-card.featured{border-color:var(--p);box-shadow:0 8px 40px rgba(247,189,63,.15)}
.price-popular{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,var(--p),var(--pd));color:#fff;padding:5px 18px;border-radius:20px;font-size:12px;font-weight:700;white-space:nowrap}
.price-name{font-size:14px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:10px}
.price-amount{font-size:48px;font-weight:900;color:var(--dark);line-height:1}
.price-period{font-size:14px;color:var(--muted);margin-bottom:6px}
.price-sub{font-size:13px;color:var(--muted);margin-bottom:24px;padding-bottom:24px;border-bottom:1px solid var(--border)}
.price-features{list-style:none;display:flex;flex-direction:column;gap:10px;margin-bottom:28px}
.price-features li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--text)}
.price-features li i.fa-check{color:var(--grn)}
.price-features li i.fa-times{color:#d1d5db}
.price-features li.muted{color:var(--muted)}
.price-note{font-size:12px;color:var(--muted);background:var(--bg);border-radius:8px;padding:10px 12px;margin-bottom:20px;border-left:3px solid var(--org)}
/* CONTACT */
.contact-g{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start;max-width:1100px;margin:0 auto}
.contact-items{margin:32px 0}
.ci{display:flex;align-items:center;gap:16px;padding:16px 0;border-bottom:1px solid var(--border)}
.ci:last-child{border-bottom:none}
.ci-icon{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.ci-label{font-size:12px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.5px;margin-bottom:3px}
.ci-value{font-size:14px;font-weight:600;color:var(--dark)}
.contact-form-card{background:var(--bg);border:1px solid var(--border);border-radius:20px;padding:32px}
.form-group{margin-bottom:18px}
.form-label{font-size:13px;font-weight:600;color:var(--dark);display:block;margin-bottom:6px}
.form-input{width:100%;padding:12px 14px;border:1.5px solid var(--border);border-radius:10px;font-family:inherit;font-size:14px;background:#fff;transition:.2s;outline:none}
.form-input:focus{border-color:var(--p);box-shadow:0 0 0 3px rgba(247,189,63,.1)}
.form-select{appearance:none;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7280' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat right 12px center}
/* FOOTER */
footer{background:var(--dark2);color:#fff;padding:60px 5% 30px}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand p{font-size:13px;color:rgba(255,255,255,.5);line-height:1.7;margin-top:10px;max-width:260px}
.footer-col h4{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:rgba(255,255,255,.4);margin-bottom:14px}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.55);padding:3px 0;transition:.2s}
.footer-col a:hover{color:#fff}
.footer-bottom{padding-top:24px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-bottom p{font-size:12px;color:rgba(255,255,255,.35)}
.footer-socials{display:flex;gap:10px;margin-top:14px}
.fs{width:36px;height:36px;border-radius:8px;background:rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;font-size:16px;color:rgba(255,255,255,.6);transition:.2s}
.fs:hover{background:var(--p);color:#fff}
/* ANIMATIONS */
.fade-up{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
.fade-up.visible{opacity:1;transform:none}
@media(max-width:768px){
  .hero-grid,.about-g,.contact-g{grid-template-columns:1fr}
  .hero-right{display:none}
  .footer-top{grid-template-columns:1fr 1fr}
  .pricing-grid{grid-template-columns:1fr}
}


.tutor-photo-real{width:100%;border-radius:20px;object-fit:cover;display:block;box-shadow:0 20px 60px rgba(247,189,63,.25)}
.photo-container{position:relative;max-width:400px}
.photo-container::before{content:'';position:absolute;inset:-10px;border-radius:28px;background:linear-gradient(135deg,rgba(247,189,63,.3),rgba(79,70,229,.2));z-index:-1;filter:blur(20px)}
.photo-container::after{content:'AP Chemistry Educator';position:absolute;bottom:20px;left:50%;transform:translateX(-50%);background:rgba(247,189,63,.9);color:#fff;padding:8px 20px;border-radius:30px;font-size:13px;font-weight:700;backdrop-filter:blur(10px);white-space:nowrap}
.credentials-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}
.cred-card{background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:16px;display:flex;align-items:center;gap:12px}
.cred-icon{font-size:24px}
.cred-text{font-size:13px;font-weight:600;color:var(--dark)}

:where(img[width][height]){height:auto}