:root{
  --orange: #FF6B00;
  --purple: #6B4EFF;
  --gray-light: #F2F2F2;
  --gray-dark: #555555;
  --max-width: 1200px;
}

/* Basic reset */
*{box-sizing:border-box}
html,body{height:100%}
html{scroll-padding-top:70px} /* якоря не уезжают под фикс-хедер */
body{font-family:'Montserrat',sans-serif;color:var(--gray-dark);margin:0}
.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}

/* Header */
.site-header{position:fixed;left:0;right:0;top:0;background:#fff;height:65px;z-index:1000;border-bottom:1px solid #eee}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 20px}
.logo img{height:44px}
.main-nav{display:flex;gap:18px}
.main-nav a{text-decoration:none;color:var(--gray-dark);font-weight:600}
.header-actions{display:flex;align-items:center;gap:12px}
.burger{display:none;background:transparent;border:0;font-size:22px}
.section-with-background{padding-top:70px}

/* Hero */
.hero{
  position:relative;                /* нужно для ::before */
  height:85vh;
  min-height:520px;
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;      /* не повторять фон */
  display:flex;
  align-items:center;
}
@supports (height: 100dvh){
  .hero{height:85dvh}               /* точная высота на мобилках */
}
.hero-inner{padding:40px 20px; position:relative; z-index:2}
.hero-text{max-width:720px;background:linear-gradient(180deg, rgba(0,0,0,0.35), rgba(0,0,0,0.35));padding:30px;border-radius:10px}
.hero-text h1{color:#fff;font-size:2.2rem;margin-bottom:10px}
.hero-text p{color:#fff;opacity:1;margin-bottom:18px}
.hero-cta .btn{margin-right:10px}

/* Sections */
/* ВАЖНО: применяем фон только к .section, а не ко всем <section>,
   чтобы не перебивать hero */
.section{padding:40px 0}
.hero + .section {

  padding-top: 70px; /* учёт фикс-хедера */

}
.section-title{text-align:center;margin-bottom:26px;font-size:1.4rem}
.grid{display:grid;gap:18px}
.advantages .grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.adv-card{background:var(--gray-light);padding:22px;border-radius:10px;text-align:center;font-weight:600}

/* Фон для блоков контента по очереди */
.section:nth-child(even){background:#fafafa}
.section:nth-child(odd){background:url('assets.jpg') center/cover no-repeat}

.services.grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.service-card{background:#fff;padding:20px;border-radius:12px;border:1px solid #eee;text-align:left}
.service-card img{width:48px;height:48px}
.service-card h3{margin:10px 0}
.service-card p{color:#666;font-size:.95rem}
.btn{display:inline-block;padding:10px 14px;border-radius:8px;text-decoration:none;font-weight:600}
.btn-primary{background:linear-gradient(90deg,var(--orange),var(--purple));color:#fff;border:none}
.btn-ghost{background:transparent;border:2px solid rgba(255,255,255,0.2);color:#fff}
.btn-sm{padding:8px 10px}
.btn-secondary{background:#eee;color:var(--gray-dark)}

/* Reviews */
.customer-review-section{padding:40px 0;background-color:#f8f9fa}
.customer-review-container{max-width:900px;margin:0 auto;padding:0 15px}
.customer-review-title{font-size:28px;font-weight:700;margin-bottom:25px;text-align:center}
.customer-review-list{display:grid;gap:20px}
.customer-review-card{background:#fff;padding:20px;border-radius:8px;border:1px solid #e0e0e0;font-size:16px;line-height:1.5}
.customer-review-card cite{display:block;margin-top:10px;font-style:normal;font-weight:bold;color:#555}
.customer-review-actions{text-align:center;margin-top:25px}
.customer-review-more{display:inline-block;font-size:18px;font-weight:bold;color:#ff6600;text-decoration:none;padding:10px 20px;border:2px solid #ff6600;border-radius:6px;transition:all .2s ease}
.customer-review-more:hover{background-color:#ff6600;color:#fff}

/* Модалка (отзывы) */
.customer-review-modal{
  display:none;
  position:fixed;top:0;left:0;width:100%;height:100%;
  background:rgba(0,0,0,0.5);
  justify-content:center;align-items:center
}
.customer-review-modal.is-open{display:flex} /* класс для открытия */
.customer-review-modal-content{
  background:#fff;padding:20px;border-radius:10px;width:300px;position:relative
}
.customer-review-close{position:absolute;right:10px;top:10px;cursor:pointer}

/* Contact grid */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.contact-card{background:var(--gray-light);padding:18px;border-radius:10px}
.contact-form{background:#fff;padding:18px;border-radius:10px;border:1px solid #eee}
.contact-form label{display:block;margin-bottom:10px;font-size:.9rem}
.contact-form input,.contact-form select{width:100%;padding:10px;border-radius:6px;border:1px solid #ddd}
.form-msg{margin-top:10px}

/* Generic modal */
.modal{position:fixed;inset:0;background:rgba(0,0,0,0.6);z-index:10000;display:flex;align-items:center;justify-content:center;padding:20px;visibility:hidden;opacity:0;transition:opacity .25s}
.modal[aria-hidden="false"]{visibility:visible;opacity:1}
.modal-content{background:#fff;padding:22px;border-radius:12px;max-width:420px;width:100%;position:relative}
.modal-close{position:absolute;right:12px;top:12px;border:0;background:transparent;font-size:18px}
.modal-actions{display:flex;gap:12px;margin-top:14px}

/* Success toast */
.success-toast{position:fixed;right:20px;bottom:20px;background:linear-gradient(90deg,var(--purple),var(--orange));color:#fff;padding:14px 18px;border-radius:10px;display:flex;gap:10px;align-items:center;transform:translateY(20px);opacity:0;transition:all .3s}
.success-toast.show{transform:translateY(0);opacity:1}
.checkmark{font-size:20px}

/* Reveal animation */
.reveal{opacity:0;transform:translateY(18px);transition:all .6s cubic-bezier(.2,.9,.2,1)}
.reveal.visible{opacity:1;transform:none}

/* Footer */
.site-footer{background:var(--gray-dark);color:#fff;padding:18px;text-align:center}

/* Responsive */
@media (max-width:900px){
  .contact-grid{grid-template-columns:1fr}
  .burger{display:block}
  .main-nav{display:none;position:absolute;right:20px;top:64px;background:#fff;padding:10px;border-radius:8px;box-shadow:0 6px 18px rgba(0,0,0,0.08)}
  .main-nav.show{display:flex;flex-direction:column}
  .hero-text h1{font-size:1.6rem}
  .hero{height:70vh}
}

@media (max-width:768px){
  .hero{
    height:auto;              /* по содержимому */
    min-height:400px;
    padding:40px 20px;
    background-position:top center;
  }
  /* Полупрозрачный слой для контраста текста */
  .hero::before{
    content:"";
    position:absolute; inset:0;
    background:rgba(0,0,0,0.35);
    z-index:1;
  }
}