*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--blue:#3B5BA4;--red:#D93B34;--dark:#1a1a2e;--gray:#6b7280;--light:#f8f9fb;--white:#fff;--radius:12px;--shadow:0 2px 12px rgba(0,0,0,.06)}
html{scroll-behavior:smooth;scroll-padding-top:186px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;color:var(--dark);background:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
.container{max-width:1140px;margin:0 auto;padding:0 20px}

/* HEADER */
.header{position:sticky;top:0;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);z-index:100;border-bottom:1px solid #e5e7eb}
.header__inner{display:flex;align-items:center;height:176px;gap:24px}
.header__logo{display:flex;align-items:center}
.header__logo img{border-radius:6px}
.header__nav{display:flex;gap:20px;margin-left:auto;font-size:.9rem}
.header__nav a{color:var(--dark);transition:color .2s}
.header__nav a:hover{color:var(--blue)}
.header__cta{margin-left:8px;white-space:nowrap}
.dropdown{position:relative}
.dropdown__menu{display:none;position:absolute;top:100%;left:0;background:var(--white);box-shadow:var(--shadow);border-radius:var(--radius);padding:8px 0;min-width:180px;z-index:10}
.dropdown:hover .dropdown__menu{display:block}
.dropdown__menu a{display:block;padding:8px 16px;font-size:.85rem}
.dropdown__menu a:hover{background:var(--light);color:var(--blue)}
.burger{display:none;background:none;border:none;cursor:pointer;flex-direction:column;gap:5px;padding:4px}
.burger span{display:block;width:24px;height:2px;background:var(--dark);border-radius:2px;transition:transform .3s}

/* BUTTONS */
.btn{display:inline-block;padding:10px 24px;border-radius:var(--radius);font-size:.9rem;font-weight:600;transition:background .2s,transform .15s;cursor:pointer;border:none}
.btn--primary{background:var(--blue);color:#fff}
.btn--primary:hover{background:#2d4a8a}
.btn--lg{padding:14px 36px;font-size:1rem}

/* HERO */
.hero{padding:80px 0;text-align:center;background:linear-gradient(135deg,var(--light) 0%,#e8ecf6 100%)}
.hero h1{font-size:2.5rem;font-weight:800;max-width:700px;margin:0 auto 16px;line-height:1.2}
.hero p{font-size:1.1rem;color:var(--gray);max-width:560px;margin:0 auto 32px}

/* SECTIONS */
.section{padding:72px 0}
.section--alt{background:var(--light)}
.section__title{text-align:center;font-size:1.8rem;font-weight:700;margin-bottom:12px}
.section__subtitle{text-align:center;color:var(--gray);margin-bottom:32px}
.section__title+.grid,.section__title+.faq-list,.section__subtitle+.grid{margin-top:40px}

/* GRID */
.grid{display:grid;gap:24px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.grid--5{grid-template-columns:repeat(5,1fr)}

/* CARDS */
.card{background:var(--white);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow);transition:transform .2s}
.card:hover{transform:translateY(-3px)}
.card__icon{font-size:2rem;margin-bottom:12px}
.card h3{font-size:1.05rem;margin-bottom:8px}
.card p{font-size:.9rem;color:var(--gray)}
.section--alt .card{background:var(--white)}

/* LANG CARDS */
.lang-card{text-align:center;padding:24px 12px;border-radius:var(--radius);background:var(--white);box-shadow:var(--shadow);transition:transform .2s}
.lang-card:hover{transform:translateY(-3px)}
.lang-card__flag{font-size:2.2rem;display:block;margin-bottom:8px}
.lang-card h3{font-size:1rem;margin-bottom:4px}
.lang-card p{font-size:.8rem;color:var(--gray)}

/* TEACHERS */
.teacher-card{text-align:center;background:var(--white);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.teacher-card__photo{width:120px;height:120px;border-radius:50%;margin:0 auto 16px;overflow:hidden;background:#dde4f0}
.teacher-card__photo img{width:100%;height:100%;object-fit:cover}
.teacher-card h3{font-size:1rem;margin-bottom:4px}
.teacher-card__role{color:var(--blue);font-size:.85rem;font-weight:600;margin-bottom:8px}
.teacher-card p:last-child{font-size:.85rem;color:var(--gray)}

/* REVIEWS */
.review-card{background:var(--white);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow);border-left:4px solid var(--blue)}
.review-card__text{font-style:italic;margin-bottom:12px;font-size:.95rem;line-height:1.7}
.review-card__author{font-size:.85rem;font-weight:600;color:var(--blue)}

/* FAQ */
.faq-list{max-width:700px;margin:0 auto}
.faq-item{border-bottom:1px solid #e5e7eb;padding:16px 0}
.faq-item summary{font-weight:600;cursor:pointer;font-size:1rem;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item summary::after{content:"+";font-size:1.4rem;color:var(--blue);transition:transform .2s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{margin-top:10px;color:var(--gray);font-size:.9rem;line-height:1.7}

/* CONTACT */
.contact-grid{display:grid;grid-template-columns:1fr 1.5fr;gap:32px;align-items:start}
.contact-info p{margin-bottom:10px;font-size:.95rem}
.contact-info a{color:var(--blue)}

/* FOOTER */
.footer{background:var(--dark);color:#ccc;padding:48px 0 0}
.footer__inner{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer__col p{font-size:.85rem;margin-top:8px;line-height:1.6}
.footer__col h4{color:#fff;margin-bottom:12px;font-size:.95rem}
.footer__col a{display:block;font-size:.85rem;margin-bottom:6px;transition:color .2s}
.footer__col a:hover{color:var(--blue)}
.footer__bottom{margin-top:40px;padding:16px 0;border-top:1px solid rgba(255,255,255,.1);font-size:.8rem;text-align:center;color:#888}

/* MOBILE */
@media(max-width:900px){
  .grid--4,.grid--5{grid-template-columns:repeat(2,1fr)}
  .footer__inner{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .header__nav,.header__cta{display:none}
  .header__nav.active{display:flex;flex-direction:column;position:absolute;top:64px;left:0;right:0;background:var(--white);padding:20px;box-shadow:var(--shadow);gap:12px}
  .header__nav.active~.header__cta{display:inline-block;position:absolute;top:auto;right:20px}
  .burger{display:flex}
  .burger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .burger.active span:nth-child(2){opacity:0}
  .burger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .hero h1{font-size:1.8rem}
  .grid--3{grid-template-columns:1fr}
  .grid--4{grid-template-columns:1fr 1fr}
  .grid--5{grid-template-columns:repeat(3,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .footer__inner{grid-template-columns:1fr}
  .dropdown__menu{position:static;box-shadow:none;padding-left:16px}
  .dropdown:hover .dropdown__menu{display:block}
}
@media(max-width:480px){
  .grid--4,.grid--5{grid-template-columns:1fr 1fr}
  .hero{padding:48px 0}
}