@font-face {
  font-family: "Montserrat";
  src: url(../fonts/Montserrat-VariableFont_wght.ttf);
  font-display: swap;
}

:root {
  --primary: #0a3d62;
  --primary-light: #1e5f8a;
  --secondary: #3c6382;
  --accent: #60a3bc;
  --bg: #f5f6fa;
  --text: #2c3e50;
  --text-light: #5d6d7e;
  --light: #ffffff;
  --gray: #a0aec0;
  --border: #e2e8f0;
  --radius: 12px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow: 0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --transition: 0.2s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  line-height: 1.2;
}

img {
  display: block;
  max-width: 100%;
}

a {
  text-decoration: none;
  color: inherit;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn--primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: var(--light);
}

.btn--primary:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.btn--outline {
  border: 2px solid var(--primary);
  color: var(--primary);
  background: transparent;
}

.btn--outline:hover {
  background: var(--primary);
  color: var(--light);
}

.btn--full {
  width: 100%;
  text-align: center;
}

.section-subtitle {
  color: var(--text-light);
  font-size: 1.2rem;
  margin-bottom: 48px;
  max-width: 600px;
}

.logo a {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--primary);
}

.logo img {
  width: 50px;
  height: 50px;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--light);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
  background: rgba(255,255,255,0.95);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.header__notice {
  font-size: 0.85rem;
  color: var(--text-light);
  display: none;
}

@media (min-width: 1024px) {
  .header__notice {
    display: block;
    margin-left: auto;
    margin-right: 24px;
  }
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav__list a {
  font-weight: 500;
  color: var(--text);
  transition: color var(--transition);
}

.nav__list a:hover {
  color: var(--primary);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.hamburger span {
  width: 24px;
  height: 3px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

@media (max-width: 1023px) {
  .nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--light);
    box-shadow: var(--shadow);
    padding: 24px;
  }
  .nav.active {
    display: block;
  }
  .nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .hamburger {
    display: flex;
  }
}

section {
  padding: 64px 0;
  max-width: 100%;
}

section:nth-child(even) {
  background: var(--light);
}

.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: var(--light);
  padding: 80px 0;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero__text h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin-bottom: 16px;
}

.hero__subtitle {
  font-size: 1.2rem;
  opacity: 0.9;
  margin-bottom: 32px;
}

.hero__buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__buttons .btn--outline {
  border-color: var(--light);
  color: var(--light);
}

.hero__buttons .btn--outline:hover {
  background: var(--light);
  color: var(--primary);
}

.hero__image img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/3;
  object-fit: cover;
  width: 100%;
}

@media (max-width: 767px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }
  .hero__image {
    order: -1;
    margin-bottom: 24px;
  }
}

.products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.product-card {
  background: var(--light);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.product-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 1px solid var(--border);
}

.product-card__body {
  padding: 24px;
}

.product-card h3 {
  margin-bottom: 8px;
}

.product-card p {
  color: var(--text-light);
  margin-bottom: 12px;
}

.product-card__specs {
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 500;
}

.product-card__price {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  margin: 16px 0;
}

@media (max-width: 1023px) {
  .products__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .products__grid {
    grid-template-columns: 1fr;
  }
}

.benefits__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.benefit-card {
  text-align: center;
  padding: 32px 24px;
  background: var(--light);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

.benefit-card:hover {
  box-shadow: var(--shadow);
}

.benefit-card i {
  font-size: 3rem;
  color: var(--primary);
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.benefit-card h3 {
  margin-bottom: 8px;
}

@media (max-width: 1023px) {
  .benefits__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .benefits__grid {
    grid-template-columns: 1fr;
  }
}

.install__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.install__image img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  object-fit: cover;
  width: 100%;
  aspect-ratio: 4/3;
}

.step {
  display: flex;
  gap: 24px;
  margin-bottom: 32px;
}

.step__number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--light);
  font-weight: 700;
  font-size: 1.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step__text h3 {
  margin-bottom: 4px;
}

.step__text p {
  color: var(--text-light);
}

@media (max-width: 767px) {
  .install__inner {
    grid-template-columns: 1fr;
  }
}

.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.testimonial {
  background: var(--light);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}

.testimonial__author img {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--primary);
}

.testimonial__name {
  font-weight: 600;
}

.testimonial__location {
  font-size: 0.85rem;
  color: var(--text-light);
}

.testimonial__rating {
  color: #f1c40f;
  font-size: 1.25rem;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.testimonial p {
  color: var(--text-light);
  font-style: italic;
}

@media (max-width: 1023px) {
  .testimonials__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 600px) {
  .testimonials__grid {
    grid-template-columns: 1fr;
  }
}

.contact-form {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.contact-form form {
  max-width: 600px;
  margin: 0 auto;
  background: var(--light);
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition);
  background: var(--light);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(10,61,98,0.1);
}

.form-group--checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
}

.form-group--checkbox input {
  width: auto;
}

.footer {
  margin-top: auto;
  background: var(--text);
  color: #cbd5e0;
  padding: 64px 0 0;
  font-size: 0.95rem;
}

.footer__inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}

.footer h4 {
  color: var(--light);
  margin-bottom: 16px;
  font-size: 1.1rem;
}

.footer ul {
  list-style: none;
  padding: 0;
}

.footer ul li {
  margin-bottom: 8px;
}

.footer a {
  color: inherit;
  transition: color var(--transition);
}

.footer a:hover {
  color: var(--accent);
}

.footer__disclaimer {
  border-top: 1px solid #4a5568;
  padding: 32px 24px;
  text-align: center;
  font-size: 0.9rem;
  color: #a0aec0;
}

.footer__copy {
  border-top: 1px solid #4a5568;
  padding: 24px;
  text-align: center;
  font-size: 0.9rem;
  color: var(--gray);
}

@media (max-width: 767px) {
  .footer__inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 500px) {
  .footer__inner {
    grid-template-columns: 1fr;
  }
}

.popup {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  align-items: center;
  justify-content: center;
}

.popup.active {
  display: flex;
}

.popup__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
}

.popup__content {
  position: relative;
  background: var(--light);
  border-radius: var(--radius);
  padding: 40px 32px;
  max-width: 480px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow-lg);
  animation: popupIn 0.3s ease;
}

.popup__logo {
  margin-bottom: 24px;
}

.popup__content h3 {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.popup__content p {
  color: var(--text-light);
  margin-bottom: 12px;
}

@keyframes popupIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@media (max-width: 500px) {
  section {
    padding: 40px 0;
  }
}

h2 {
    margin-bottom: 24px;
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 0;
}

.legal-content .wrapper {
  margin: 0 auto;
}

.legal-content h1 {
  font-size: 2rem;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 24px;
}

.legal-content h2 {
  font-size: 1.8rem;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  line-height: 1.2;
  color: var(--text);
  margin: 28px 0 16px;
}

.legal-content h3 {
  font-size: 1.4rem;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  line-height: 1.2;
  color: var(--text);
  margin: 24px 0 12px;
}

.legal-content p {
  font-size: 1rem;
  line-height: 1.6;
  color: #333;
  margin-bottom: 16px;
}

.legal-content ul,
.legal-content ol {
  margin: 1rem 0;
  padding-left: 1.5rem;
}

.legal-content li {
  font-size: 1rem;
  line-height: 1.6;
  color: #333;
  margin-bottom: 8px;
}

.legal-content b,
.legal-content strong {
  font-weight: 600;
  color: var(--text);
}

.legal-content a {
  color: var(--primary);
  text-decoration: underline;
  font-weight: 500;
}

.legal-content a:hover {
  color: var(--primary-light);
}

.legal-content br {
  content: '';
  display: block;
  margin-bottom: 4px;
}