:root {
  --primary: #c2410c;
  --primary-dark: #9a3412;
  --primary-light: #fff7ed;
  --dark: #1c1917;
  --dark-soft: #292524;
  --bg: #fafaf9;
  --surface: #ffffff;
  --text: #1c1917;
  --text-muted: #78716c;
  --border: #e7e5e4;
  --success: #16a34a;
  --error: #dc2626;
  --font: 'Manrope', system-ui, sans-serif;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(28, 25, 23, 0.08);
  --shadow-lg: 0 24px 60px rgba(28, 25, 23, 0.14);
  --header-h: 72px;
  --transition: 0.25s ease;
}

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

html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-family: var(--font);
  font-size: 15px;
  font-weight: 700;
  border-radius: 12px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.btn--primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

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

.btn--dark {
  background: var(--dark);
  color: #fff;
  border-color: var(--dark);
}

.btn--dark:hover { background: var(--dark-soft); }

.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.header--scrolled {
  border-color: var(--border);
  box-shadow: var(--shadow);
}

.header__inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: var(--header-h);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  flex-shrink: 0;
}

.logo__icon {
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.logo__accent { color: var(--primary); }

.nav {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: auto;
}

.nav__link {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  transition: color var(--transition);
}

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

.nav__link--cta {
  background: var(--primary-light);
  color: var(--primary);
  padding: 8px 16px;
  border-radius: 8px;
}

.header__phone {
  font-size: 14px;
  font-weight: 700;
  color: var(--dark);
  flex-shrink: 0;
}

.header__cta {
  padding: 10px 20px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  border-radius: 10px;
  flex-shrink: 0;
  transition: background var(--transition);
}

.header__cta:hover { background: var(--primary-dark); }

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}

.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: all var(--transition);
}

.burger--active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.burger--active span:nth-child(2) { opacity: 0; }
.burger--active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Hero */
.hero {
  padding: calc(var(--header-h) + 48px) 0 80px;
  background: linear-gradient(135deg, #fff7ed 0%, #fafaf9 50%, #fff 100%);
  overflow: hidden;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero__badge {
  display: inline-block;
  padding: 6px 14px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  border-radius: 100px;
  margin-bottom: 20px;
}

.hero__title {
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero__title span { color: var(--primary); }

.hero__text {
  font-size: 18px;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 480px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.hero__stats {
  display: flex;
  gap: 32px;
}

.hero__stats li strong {
  display: block;
  font-size: 28px;
  font-weight: 800;
  color: var(--dark);
}

.hero__stats li span {
  font-size: 13px;
  color: var(--text-muted);
}

.hero__visual { position: relative; }

.hero__image-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/3;
}

.hero__image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__float {
  position: absolute;
  background: var(--surface);
  padding: 14px 18px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero__float--top { top: 20px; left: -20px; }
.hero__float--bottom { bottom: 24px; right: -16px; }

.hero__float-icon {
  width: 32px;
  height: 32px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

/* Sections */
.section { padding: 80px 0; }
.section--alt { background: var(--surface); }

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 48px;
}

.section-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-muted);
}

/* Quiz */
.quiz-section {
  padding: 80px 0;
  background: var(--dark);
  color: #fff;
}

.quiz-section .section-label { color: #fb923c; }
.quiz-section .section-title { color: #fff; }
.quiz-section .section-subtitle { color: #a8a29e; }

.quiz {
  max-width: 720px;
  margin: 0 auto;
  background: var(--dark-soft);
  border-radius: 20px;
  padding: 40px;
  border: 1px solid rgba(255,255,255,0.08);
}

.quiz__progress {
  margin-bottom: 32px;
}

.quiz__progress-bar {
  height: 6px;
  background: rgba(255,255,255,0.1);
  border-radius: 100px;
  overflow: hidden;
  margin-bottom: 10px;
}

.quiz__progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), #fb923c);
  border-radius: 100px;
  transition: width 0.4s ease;
  width: 0%;
}

.quiz__progress-text {
  font-size: 13px;
  color: #a8a29e;
  font-weight: 600;
}

.quiz__step { display: none; }
.quiz__step--active { display: block; animation: fadeIn 0.35s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.quiz__question {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 8px;
}

.quiz__hint {
  font-size: 14px;
  color: #a8a29e;
  margin-bottom: 24px;
}

.quiz__options {
  display: grid;
  gap: 10px;
}

.quiz__options--grid {
  grid-template-columns: repeat(2, 1fr);
}

.quiz__option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  background: rgba(255,255,255,0.04);
  border: 2px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--transition);
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  text-align: left;
}

.quiz__option:hover { border-color: rgba(251,146,60,0.5); background: rgba(251,146,60,0.08); }

.quiz__option--selected {
  border-color: var(--primary);
  background: rgba(194,65,12,0.15);
}

.quiz__option input { display: none; }

.quiz__option-icon {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.08);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.quiz__option--selected .quiz__option-icon { background: var(--primary); }

.quiz__checkboxes {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.quiz__checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background: rgba(255,255,255,0.04);
  border: 2px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition);
}

.quiz__checkbox:hover { border-color: rgba(251,146,60,0.4); }

.quiz__checkbox--checked {
  border-color: var(--primary);
  background: rgba(194,65,12,0.12);
}

.quiz__checkbox input { display: none; }

.quiz__checkbox-mark {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 5px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  transition: all var(--transition);
}

.quiz__checkbox--checked .quiz__checkbox-mark {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.quiz__nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 32px;
  gap: 12px;
}

.quiz__back {
  background: none;
  border: none;
  color: #a8a29e;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  padding: 8px 0;
  transition: color var(--transition);
}

.quiz__back:hover { color: #fff; }
.quiz__back:disabled { opacity: 0; pointer-events: none; }

.quiz__result {
  text-align: center;
  padding: 20px 0;
}

.quiz__result-price {
  font-size: 42px;
  font-weight: 800;
  color: #fb923c;
  margin: 16px 0 8px;
}

.quiz__result-note {
  font-size: 14px;
  color: #a8a29e;
  margin-bottom: 28px;
}

.quiz__form {
  display: grid;
  gap: 16px;
  text-align: left;
}

.quiz__input {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255,255,255,0.06);
  border: 2px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  color: #fff;
  font-family: var(--font);
  font-size: 15px;
  transition: border-color var(--transition);
}

.quiz__input::placeholder { color: #78716c; }
.quiz__input:focus { outline: none; border-color: var(--primary); }
.quiz__input--error { border-color: var(--error); }

.quiz__error {
  font-size: 13px;
  color: #f87171;
  margin-top: -8px;
}

.quiz__success {
  text-align: center;
  padding: 40px 20px;
}

.quiz__success-icon {
  width: 64px;
  height: 64px;
  background: var(--success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin: 0 auto 20px;
}

.quiz__success h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
}

.quiz__success p { color: #a8a29e; font-size: 15px; }

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

.advantage {
  padding: 28px 24px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: box-shadow var(--transition), transform var(--transition);
}

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

.advantage__icon {
  width: 48px;
  height: 48px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 16px;
}

.advantage__title {
  font-size: 17px;
  font-weight: 800;
  margin-bottom: 8px;
}

.advantage__text {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}

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

.portfolio-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.portfolio-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.portfolio-card__image {
  aspect-ratio: 4/3;
  overflow: hidden;
}

.portfolio-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.portfolio-card:hover .portfolio-card__image img { transform: scale(1.05); }

.portfolio-card__body { padding: 20px; }

.portfolio-card__tag {
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.portfolio-card__title {
  font-size: 17px;
  font-weight: 800;
  margin-bottom: 4px;
}

.portfolio-card__meta {
  font-size: 14px;
  color: var(--text-muted);
}

/* Process */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.process-step {
  position: relative;
  padding: 28px 24px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.process-step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
  opacity: 0.3;
  margin-bottom: 12px;
}

.process-step__title {
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 8px;
}

.process-step__text {
  font-size: 14px;
  color: var(--text-muted);
}

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

.review-card {
  padding: 28px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.review-card__stars {
  color: #f59e0b;
  font-size: 16px;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.review-card__text {
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 20px;
  color: var(--text);
}

.review-card__author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-card__avatar {
  width: 44px;
  height: 44px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
}

.review-card__name { font-size: 14px; font-weight: 700; }
.review-card__meta { font-size: 13px; color: var(--text-muted); }

/* CTA */
.cta-banner {
  padding: 72px 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  text-align: center;
  color: #fff;
}

.cta-banner__title {
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 800;
  margin-bottom: 12px;
}

.cta-banner__text {
  font-size: 17px;
  opacity: 0.9;
  margin-bottom: 28px;
}

.cta-banner .btn--primary {
  background: #fff;
  color: var(--primary);
  border-color: #fff;
}

.cta-banner .btn--primary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}

/* Footer */
.footer {
  background: var(--dark);
  color: #a8a29e;
  padding: 60px 0 0;
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer .logo { color: #fff; margin-bottom: 12px; }
.footer__desc { font-size: 14px; line-height: 1.6; }

.footer__title {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__link {
  display: block;
  font-size: 14px;
  margin-bottom: 10px;
  transition: color var(--transition);
}

.footer__link:hover { color: #fb923c; }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  font-size: 13px;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero__inner { grid-template-columns: 1fr; gap: 40px; }
  .hero__visual { max-width: 560px; margin: 0 auto; }
  .hero__float--top { left: 0; }
  .hero__float--bottom { right: 0; }
  .advantages, .portfolio-grid, .process-steps, .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .footer__inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--surface);
    flex-direction: column;
    align-items: flex-start;
    padding: 32px 24px;
    gap: 20px;
    transform: translateX(100%);
    transition: transform var(--transition);
    z-index: 99;
  }

  .nav--open { transform: translateX(0); }
  .nav__link { font-size: 18px; }

  .header__phone, .header__cta { display: none; }
  .burger { display: flex; }

  .hero { padding-bottom: 60px; }
  .hero__stats { gap: 20px; }
  .section { padding: 60px 0; }

  .quiz { padding: 28px 20px; }
  .quiz__options--grid, .quiz__checkboxes { grid-template-columns: 1fr; }

  .advantages, .portfolio-grid, .process-steps, .reviews-grid {
    grid-template-columns: 1fr;
  }

  .footer__inner { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; gap: 8px; text-align: center; }
}

/* Mobile menu — Android fix */
@media (max-width: 768px) {
  body.menu-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
  }

  .header {
    z-index: 1200 !important;
  }

  .header--menu-open {
    background: #ffffff !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }

  .burger {
    position: relative;
    z-index: 1202;
  }

  .header .nav,
  #nav.nav,
  #nav {
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    height: 100% !important;
    min-height: 100dvh !important;
    margin: 0 !important;
    padding: calc(var(--header-height, var(--header-h, 72px)) + 8px) 24px 32px !important;
    background-color: #ffffff !important;
    background-image: none !important;
    opacity: 1 !important;
    isolation: isolate !important;
    z-index: 1201 !important;
    transform: translate3d(100%, 0, 0) !important;
    transition: transform 0.28s ease, visibility 0.28s ease !important;
    visibility: hidden !important;
    pointer-events: none !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch;
    box-shadow: -12px 0 40px rgba(0, 0, 0, 0.18) !important;
    gap: 0 !important;
  }

  .header .nav--open,
  #nav.nav--open,
  #nav.nav--open {
    transform: translate3d(0, 0, 0) !important;
    visibility: visible !important;
    pointer-events: auto !important;
  }

  .nav-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1199;
    background-color: rgba(15, 23, 42, 0.65);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.28s ease, visibility 0.28s ease;
  }

  .nav-backdrop--visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
}