*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',sans-serif;background:#f0f4f8;color:#1a2332;overflow-x:hidden}

/* PAGE SYSTEM */
.page{display:none}.page.active{display:block}

/* ── NAV ── */
nav{position:fixed;top:0;left:0;right:0;z-index:200;display:flex;align-items:center;justify-content:space-between;padding:.9rem 2rem;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);box-shadow:0 1px 20px rgba(0,0,0,.08)}
.nav-logo{font-size:1.4rem;font-weight:900;color:#1565C0;cursor:pointer;letter-spacing:-.5px}
.nav-logo span{color:#29B6F6}
.nav-links{display:flex;gap:1.8rem;list-style:none}
.nav-links a{color:#546e7a;text-decoration:none;font-size:.85rem;font-weight:500;letter-spacing:.03em;cursor:pointer;transition:color .2s}
.nav-links a:hover{color:#1565C0}
.nav-cta{background:linear-gradient(135deg,#1565C0,#1976D2);color:#fff;border:none;border-radius:50px;padding:.55rem 1.3rem;font-family:'Inter',sans-serif;font-size:.85rem;font-weight:600;cursor:pointer;text-decoration:none;box-shadow:0 4px 15px rgba(21,101,192,.35);transition:transform .15s,box-shadow .15s}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(21,101,192,.45)}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:4px}
.hamburger span{display:block;width:22px;height:2px;background:#546e7a;border-radius:2px}
.mob-menu{display:none;position:fixed;inset:0;z-index:199;background:rgba(255,255,255,.98);flex-direction:column;align-items:center;justify-content:center;gap:2rem}
.mob-menu.open{display:flex}
.mob-menu a{font-size:1.6rem;font-weight:700;color:#1a2332;text-decoration:none;cursor:pointer}
.mob-menu a:hover{color:#1565C0}
.mob-close{position:absolute;top:1.5rem;right:2rem;background:none;border:none;color:#546e7a;font-size:2rem;cursor:pointer}

/* ── HERO ── */
.hero{min-height:100vh;display:flex;align-items:center;padding:6rem 2rem 3rem;background:linear-gradient(160deg,#e3f2fd 0%,#f0f4f8 50%,#e8f5e9 100%);position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-80px;right:-80px;width:500px;height:500px;border-radius:50%;background:radial-gradient(circle,rgba(21,101,192,.08) 0%,transparent 70%);pointer-events:none}
.hero::after{content:'';position:absolute;bottom:-100px;left:-100px;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle,rgba(41,182,246,.08) 0%,transparent 70%);pointer-events:none}
.hero-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center;width:100%}
.hero-text{}
.hero-badge{display:inline-flex;align-items:center;gap:.5rem;background:#e3f2fd;border:1px solid #bbdefb;color:#1565C0;border-radius:50px;padding:.35rem .9rem;font-size:.75rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;margin-bottom:1.5rem}
.hero h1{font-size:clamp(2rem,4vw,3.2rem);font-weight:900;line-height:1.1;color:#0d47a1;margin-bottom:1rem}
.hero h1 .blue{color:#1976D2}.hero h1 .sky{color:#0288D1}
.hero-sub{font-size:1rem;color:#546e7a;line-height:1.75;margin-bottom:.8rem;font-weight:400}
.hero-tagline{font-size:.88rem;color:#1565C0;font-weight:600;background:#e3f2fd;padding:.6rem 1rem;border-radius:8px;margin-bottom:2rem;line-height:1.5}
.hero-btns{display:flex;gap:1rem;flex-wrap:wrap}
.btn-blue{display:inline-flex;align-items:center;gap:.6rem;background:linear-gradient(135deg,#1565C0,#1976D2);color:#fff;text-decoration:none;padding:.85rem 1.8rem;border-radius:50px;font-weight:700;font-size:.95rem;box-shadow:0 8px 25px rgba(21,101,192,.4);transition:transform .2s,box-shadow .2s;border:none;cursor:pointer;font-family:'Inter',sans-serif}
.btn-blue:hover{transform:translateY(-2px);box-shadow:0 12px 35px rgba(21,101,192,.5)}
.btn-outline{display:inline-flex;align-items:center;gap:.6rem;background:#fff;color:#1565C0;border:2px solid #1565C0;text-decoration:none;padding:.83rem 1.8rem;border-radius:50px;font-weight:600;font-size:.95rem;cursor:pointer;transition:background .2s,color .2s;font-family:'Inter',sans-serif}
.btn-outline:hover{background:#1565C0;color:#fff}

/* ── PHONE MOCKUP ── */
.phone-wrap{display:flex;justify-content:center;align-items:center;position:relative}
.phone{width:260px;height:520px;background:#111;border-radius:40px;padding:10px;box-shadow:0 40px 80px rgba(0,0,0,.25),0 0 0 1px rgba(0,0,0,.1);position:relative}
.phone-notch{position:absolute;top:10px;left:50%;transform:translateX(-50%);width:80px;height:22px;background:#111;border-radius:0 0 14px 14px;z-index:10}
.phone-screen{width:100%;height:100%;background:#f0f0f0;border-radius:32px;overflow:hidden;position:relative}
/* App UI inside phone */
.app-screen{width:100%;height:100%;display:flex;flex-direction:column;overflow:hidden}
.app-topbar{padding:28px 14px 10px;display:flex;align-items:center;justify-content:space-between;background:#f5f5f5}
.app-hamburger{display:flex;flex-direction:column;gap:3px}
.app-hamburger span{display:block;width:16px;height:2px;background:#333;border-radius:2px}
.app-hero-banner{margin:6px 10px;background:linear-gradient(135deg,#1565C0,#29B6F6);border-radius:16px;padding:16px 14px;color:#fff;text-align:center}
.app-hero-banner h2{font-size:1.3rem;font-weight:900;letter-spacing:1px;margin-bottom:8px}
.app-hero-banner p{font-size:.52rem;font-weight:600;line-height:1.5;text-align:justify}
.app-cats-label{font-size:.65rem;font-weight:800;color:#333;padding:8px 14px 4px;letter-spacing:.03em;text-align:left}
.app-scroll{flex:1;overflow:hidden;padding:0 10px;display:flex;flex-direction:column;gap:6px}
.app-cat-card{background:#fff;border-radius:12px;padding:10px 12px;display:flex;align-items:center;justify-content:space-between;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.app-cat-info{}
.app-cat-name{font-size:.58rem;font-weight:700;color:#1a2332;margin-bottom:2px}
.app-cat-sub{font-size:.5rem;color:#90a4ae;text-align:left}
.app-progress{width:28px;height:28px;border-radius:50%;border:2.5px solid #e0e0e0;display:flex;align-items:center;justify-content:center;font-size:.42rem;font-weight:700;color:#ef5350}
.phone-glow{position:absolute;bottom:-30px;left:50%;transform:translateX(-50%);width:200px;height:60px;background:radial-gradient(ellipse,rgba(21,101,192,.25) 0%,transparent 70%);pointer-events:none}

/* ── EXAM CHIPS ── */
.chips-wrap{background:#fff;padding:1.5rem 2rem;border-bottom:1px solid #e0e9f5}
.chips-inner{max-width:1200px;margin:0 auto;display:flex;gap:.6rem;flex-wrap:wrap;align-items:center}
.chip-label{font-size:.72rem;font-weight:700;color:#90a4ae;text-transform:uppercase;letter-spacing:.08em;margin-right:.4rem}
.chip{background:#e3f2fd;border:1px solid #bbdefb;color:#1565C0;border-radius:50px;padding:.3rem .85rem;font-size:.75rem;font-weight:600}

/* ── SECTIONS ── */
.sec{padding:5rem 2rem}
.sec-inner{max-width:1200px;margin:0 auto}
.sec-label{font-size:.72rem;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:#1976D2;margin-bottom:.6rem;display:block}
.sec-title{font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:800;color:#0d47a1;margin-bottom:.8rem;line-height:1.15}
.sec-sub{color:#546e7a;font-size:.98rem;font-weight:400;max-width:520px;line-height:1.75;margin-bottom:2.5rem}

/* ── FEATURES ── */
.features-bg{background:#fff}
.feat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.2rem}
.feat-card{background:#f8fbff;border:1.5px solid #e3f2fd;border-radius:16px;padding:1.8rem;transition:transform .25s,box-shadow .25s,border-color .25s}
.feat-card:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(21,101,192,.12);border-color:#90caf9}
.feat-icon{font-size:1.6rem;width:52px;height:52px;background:#e3f2fd;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:1rem;border:1.5px solid #bbdefb}
.feat-title{font-weight:700;font-size:1rem;margin-bottom:.4rem;color:#0d47a1}
.feat-desc{color:#607d8b;font-size:.875rem;line-height:1.65}

/* ── CATEGORIES ── */
.cats-bg{background:linear-gradient(135deg,#e3f2fd 0%,#f0f4f8 100%)}
.cats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem}
.cat-card{background:#fff;border-radius:14px;padding:1.3rem 1.5rem;display:flex;align-items:center;justify-content:space-between;box-shadow:0 4px 16px rgba(0,0,0,.06);border:1.5px solid #e3f2fd;transition:transform .2s,box-shadow .2s}
.cat-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(21,101,192,.12)}
.cat-name{font-weight:700;font-size:.92rem;color:#0d47a1;margin-bottom:.25rem}
.cat-sub{font-size:.75rem;color:#90a4ae}
.cat-badge{width:38px;height:38px;border-radius:50%;border:2.5px solid #e0e0e0;display:flex;align-items:center;justify-content:center;font-size:.7rem;font-weight:700;color:#ef5350;flex-shrink:0}

/* ── ABOUT ── */
.about-bg{background:#fff}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:4rem;align-items:center}
.about-card{background:linear-gradient(135deg,#1565C0 0%,#0d47a1 100%);border-radius:24px;padding:2.5rem;color:#fff;box-shadow:0 30px 60px rgba(21,101,192,.35)}
.about-app-icon{width:64px;height:64px;border-radius:16px;background:rgba(255,255,255,.2);display:flex;align-items:center;justify-content:center;font-size:2rem;margin-bottom:1rem;border:2px solid rgba(255,255,255,.3)}
.about-app-name{font-size:1.5rem;font-weight:900;margin-bottom:.25rem}
.about-app-tagline{font-size:.78rem;color:rgba(255,255,255,.7);margin-bottom:1.5rem;line-height:1.5}
.about-stats{display:flex;gap:1.5rem}
.stat-num{font-size:1.6rem;font-weight:900;color:#fff}
.stat-lbl{font-size:.65rem;color:rgba(255,255,255,.6);text-transform:uppercase;letter-spacing:.06em}
.about-text p{color:#546e7a;font-size:.92rem;line-height:1.8;margin-bottom:1rem}
.disclaimer{background:#fff3e0;border-left:3px solid #ff9800;border-radius:0 8px 8px 0;padding:.9rem 1.1rem;font-size:.82rem;color:#e65100;line-height:1.6;font-style:italic}

/* ── DOWNLOAD CTA ── */
.dl-bg{background:linear-gradient(135deg,#1565C0 0%,#0288D1 100%)}
.dl-inner{max-width:1200px;margin:0 auto;padding:4.5rem 2rem;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:2rem}
.dl-text h2{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;color:#fff;margin-bottom:.7rem}
.dl-text p{color:rgba(255,255,255,.8);font-size:.95rem;max-width:420px;line-height:1.7}
.playstore-btn{display:inline-flex;align-items:center;gap:.9rem;background:#fff;color:#1565C0;text-decoration:none;padding:.9rem 1.6rem;border-radius:14px;font-weight:700;box-shadow:0 12px 30px rgba(0,0,0,.2);transition:transform .2s,box-shadow .2s}
.playstore-btn:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(0,0,0,.3)}
.playstore-btn-text small{font-size:.6rem;font-weight:500;color:#607d8b;text-transform:uppercase;letter-spacing:.05em;display:block}
.playstore-btn-text strong{font-size:1rem;color:#0d47a1}

/* ── FOOTER ── */
footer{background:#0d1b2a;padding:2.5rem 2rem 1.5rem;text-align:center}
.footer-logo{font-size:1.4rem;font-weight:900;color:#29B6F6;margin-bottom:.3rem}
.footer-logo span{color:#fff}
.footer-tagline{color:#546e7a;font-size:.8rem;margin-bottom:1.2rem}
.footer-links{display:flex;justify-content:center;gap:2rem;flex-wrap:wrap;margin-bottom:1.2rem}
.footer-links a{color:#546e7a;text-decoration:none;font-size:.8rem;cursor:pointer;transition:color .2s}
.footer-links a:hover{color:#29B6F6}
.footer-copy{color:#2d3e50;font-size:.72rem}

/* ── LEGAL PAGES ── */
.legal-wrap{max-width:800px;margin:0 auto;padding:7rem 2rem 5rem}
.back-btn{display:inline-flex;align-items:center;gap:.5rem;color:#1565C0;background:none;border:none;font-family:'Inter',sans-serif;font-size:.85rem;font-weight:600;cursor:pointer;margin-bottom:2rem;padding:.5rem .9rem;background:#e3f2fd;border-radius:50px;transition:background .2s}
.back-btn:hover{background:#bbdefb}
.legal-header{margin-bottom:2.5rem;padding-bottom:2rem;border-bottom:2px solid #e3f2fd}
.legal-tag{display:inline-block;background:#e3f2fd;color:#1565C0;border-radius:50px;padding:.3rem .9rem;font-size:.7rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;margin-bottom:.8rem}
.legal-title{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;color:#0d47a1;margin-bottom:.4rem;line-height:1.1}
.legal-updated{font-size:.8rem;color:#90a4ae}
.legal-body h2{font-size:1.2rem;font-weight:700;color:#0d47a1;margin:2rem 0 .6rem;padding-left:.8rem;border-left:3px solid #1976D2}
.legal-body h3{font-size:.92rem;font-weight:600;color:#1976D2;margin:1.2rem 0 .4rem}
.legal-body p{color:#455a64;font-size:.9rem;line-height:1.85;font-weight:400;margin-bottom:.7rem}
.legal-body ul{list-style:none;margin:.4rem 0 .8rem}
.legal-body ul li{color:#455a64;font-size:.88rem;line-height:1.7;padding:.25rem 0 .25rem 1.3rem;position:relative}
.legal-body ul li::before{content:'›';position:absolute;left:0;color:#1976D2;font-weight:700;font-size:1rem}
.info-box{background:#e3f2fd;border:1px solid #bbdefb;border-radius:10px;padding:1rem 1.3rem;margin:.8rem 0}
.info-box p{margin:0;font-size:.87rem;color:#1565C0}
.warn-box{background:#fff3e0;border:1px solid #ffe0b2;border-radius:10px;padding:1rem 1.3rem;margin:.8rem 0}
.warn-box p{margin:0;font-size:.87rem;color:#e65100}
.contact-card{background:#f8fbff;border:1.5px solid #e3f2fd;border-radius:14px;padding:1.3rem 1.6rem;margin-top:2rem;display:flex;align-items:center;gap:1rem}
.contact-card a{color:#1565C0;text-decoration:none;font-weight:600}
.contact-card a:hover{text-decoration:underline}
.step-list{list-style:none;margin:.6rem 0}
.step-list li{display:flex;gap:.9rem;align-items:flex-start;padding:.7rem 0;border-bottom:1px solid #e3f2fd;color:#455a64;font-size:.88rem;line-height:1.6}
.step-num{width:26px;height:26px;border-radius:50%;background:#1565C0;color:#fff;display:flex;align-items:center;justify-content:center;font-size:.72rem;font-weight:700;flex-shrink:0;margin-top:1px}
.legal-footer{background:#f8fbff;border-top:1px solid #e3f2fd;padding:2rem;text-align:center}
.legal-footer-links{display:flex;justify-content:center;gap:1.5rem;flex-wrap:wrap;margin-bottom:1rem}
.legal-footer-links a{color:#90a4ae;text-decoration:none;font-size:.78rem;cursor:pointer}
.legal-footer-links a:hover{color:#1565C0}
.legal-footer-copy{color:#bdbdbd;font-size:.72rem}

/* RESPONSIVE */
@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr;text-align:center}
  .phone-wrap{margin-top:2rem}
  .about-grid{grid-template-columns:1fr}
  .hero-btns{justify-content:center}
  .sec-sub{max-width:100%}
}
@media(max-width:700px){
  .nav-links,.nav-cta{display:none}
  .hamburger{display:flex}
  nav{padding:.9rem 1.2rem}
  .dl-inner{flex-direction:column;align-items:flex-start}
}

/* ANIMATIONS */
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}
.fade-in{opacity:0;transform:translateY(18px);transition:opacity .5s ease,transform .5s ease}
.fade-in.visible{opacity:1;transform:none}