/* =========================================================
   БАЗА
   ========================================================= */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg-dark: #1a1a1a;
  --bg-medium: #232323;
  --bg-light: #2d2d2d;
  --bg-card: #262626;
  --border: #3a3a3a;
  --text: #e8e8e8;
  --text-muted: #9a9a9a;
  --accent: #ffb800;
  --accent-hover: #ffc933;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', Tahoma, system-ui, sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* =========================================================
   HEADER
   ========================================================= */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  padding: 15px 0;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
}

.logo-icon {
  width: 38px; height: 38px;
  background: var(--accent);
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: 20px;
  color: #1a1a1a;
}

nav ul { display: flex; list-style: none; gap: 24px; }

nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.2s;
  font-weight: 500;
}

nav a:hover, nav a.active { color: var(--accent); }

.header-phone {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  font-size: 16px;
  white-space: nowrap;
}

.header-phone:hover { color: var(--accent); }

.burger {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 26px;
  cursor: pointer;
}

/* =========================================================
   HERO
   ========================================================= */
.hero {
  padding: 160px 0 100px;
  background:
    radial-gradient(circle at 80% 20%, rgba(255, 184, 0, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 20% 80%, rgba(255, 184, 0, 0.05) 0%, transparent 50%),
    var(--bg-dark);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 50%; height: 100%;
  background-image:
    linear-gradient(rgba(255, 184, 0, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 184, 0, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 54px);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.5px;
}

.hero h1 span { color: var(--accent); }

.hero p {
  font-size: 18px;
  color: var(--text-muted);
  margin-bottom: 36px;
  max-width: 560px;
}

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

.btn {
  display: inline-block;
  padding: 15px 32px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.25s;
  font-family: inherit;
}

.btn-primary { background: var(--accent); color: #1a1a1a; }

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(255, 184, 0, 0.25);
}

.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}

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

.btn-large { padding: 18px 42px; font-size: 17px; }

.hero-features { display: flex; gap: 30px; margin-top: 40px; flex-wrap: wrap; }

.hero-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-muted);
}

.hero-feature::before {
  content: '✓';
  color: var(--accent);
  font-weight: 700;
  font-size: 16px;
}

.hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.hero-card h3 {
  font-size: 20px;
  margin-bottom: 20px;
  color: var(--accent);
}

.hero-card ul { list-style: none; }

.hero-card li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
  color: var(--text-muted);
}

.hero-card li:last-child { border-bottom: none; }

.hero-card li::before {
  content: '•';
  color: var(--accent);
  font-weight: 700;
  margin-right: 10px;
  font-size: 18px;
}

/* =========================================================
   SECTIONS
   ========================================================= */
section { padding: 90px 0; }

.section-head { text-align: center; margin-bottom: 60px; }

.section-head h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-head p {
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto;
  font-size: 16px;
}

.label {
  display: inline-block;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

/* =========================================================
   SERVICES
   ========================================================= */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 32px 28px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 184, 0, 0.4);
  background: var(--bg-light);
}

.service-card:hover::before { transform: scaleX(1); }

.service-icon {
  width: 56px; height: 56px;
  background: rgba(255, 184, 0, 0.1);
  border: 1px solid rgba(255, 184, 0, 0.3);
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 26px;
  margin-bottom: 20px;
  color: var(--accent);
}

.service-card h3 { font-size: 19px; margin-bottom: 12px; color: var(--text); }

.service-card p { color: var(--text-muted); font-size: 15px; }

/* =========================================================
   PREVIEW SECTION — ФОТО + ВИДЕО РЯДОМ
   ========================================================= */
.preview-section { padding: 80px 0; }

.preview-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: stretch;
}

.preview-column {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: border-color 0.3s;
}

.preview-column:hover {
  border-color: rgba(255, 184, 0, 0.3);
}

.preview-column-head {
  text-align: center;
  margin-bottom: 26px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
}

.preview-column-head h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.preview-column-head h3 .icon {
  color: var(--accent);
  font-size: 24px;
}

.preview-column-head p {
  color: var(--text-muted);
  font-size: 14px;
}

.preview-column .preview-photos {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 28px;
  flex: 1;
}

.preview-column .preview-photos .gallery-item {
  aspect-ratio: 4 / 3;
}

.preview-column .preview-photos .gallery-overlay {
  font-size: 12px;
  padding: 30px 12px 12px;
  opacity: 1;
  transform: translateY(0);
  background: linear-gradient(to top, rgba(0,0,0,0.85), transparent 80%);
}

.preview-column .preview-videos {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 28px;
  flex: 1;
}

.preview-column .video-preview-info {
  padding: 14px 18px;
}

.preview-column .video-preview-info h4 {
  font-size: 15px;
  margin-bottom: 4px;
}

.preview-column .video-preview-info p {
  font-size: 13px;
}

.preview-column .video-preview-play {
  width: 56px;
  height: 56px;
  font-size: 22px;
}

.preview-column-cta {
  margin-top: auto;
  padding-top: 4px;
  text-align: center;
}

.preview-column-cta .btn {
  width: 100%;
  padding: 14px 24px;
  font-size: 15px;
}

/* =========================================================
   GALLERY
   ========================================================= */
.gallery-filters {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 22px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 30px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  transition: all 0.25s;
}

.filter-btn:hover { border-color: var(--accent); color: var(--accent); }

.filter-btn.active {
  background: var(--accent);
  color: #1a1a1a;
  border-color: var(--accent);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  border: 1px solid var(--border);
  cursor: pointer;
  aspect-ratio: 4 / 3;
  background: var(--bg-card);
  transition: all 0.3s;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
  display: block;
}

.gallery-item:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.gallery-item:hover img { transform: scale(1.08); }

.gallery-overlay {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 40px 18px 16px;
  background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s;
}

.gallery-item:hover .gallery-overlay { opacity: 1; transform: translateY(0); }

/* =========================================================
   VIDEO (полные плееры на video.html)
   ========================================================= */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 24px;
}

.video-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 0.3s;
}

.video-card:hover { border-color: rgba(255,184,0,0.4); }

.video-card video,
.video-card iframe {
  width: 100%;
  display: block;
  background: #000;
  aspect-ratio: 16 / 9;
  border: none;
}

.video-info { padding: 18px 22px; }

.video-info h4 { font-size: 16px; margin-bottom: 6px; }

.video-info p { color: var(--text-muted); font-size: 14px; }

/* =========================================================
   VIDEO PREVIEW CARD (для главной)
   Клик по превью → встроенный плеер внутри карточки
   ========================================================= */
.video-preview-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  color: var(--text);
  display: block;
  transition: border-color 0.3s, box-shadow 0.3s;
  position: relative;
  cursor: pointer;
}

/* transform задаём только на вложенный thumb, НЕ на карточку,
   иначе fullscreen у видео будет работать некорректно */
.video-preview-card:hover {
  border-color: var(--accent);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.video-preview-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #000;
  overflow: hidden;
  transition: transform 0.3s;
}

.video-preview-card:hover .video-preview-thumb {
  transform: translateY(-4px);
}

.video-preview-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s;
}

.video-preview-card:hover .video-preview-thumb img {
  transform: scale(1.05);
}

.video-preview-play {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 70px; height: 70px;
  background: rgba(255, 184, 0, 0.9);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #1a1a1a;
  font-size: 26px;
  padding-left: 5px;
  transition: transform 0.3s, background 0.3s, box-shadow 0.3s;
  pointer-events: none;
}

.video-preview-card:hover .video-preview-play {
  transform: translate(-50%, -50%) scale(1.1);
  background: var(--accent);
  box-shadow: 0 10px 30px rgba(255, 184, 0, 0.5);
}

.video-preview-info {
  padding: 18px 22px;
}

.video-preview-info h4 {
  font-size: 16px;
  margin-bottom: 6px;
  color: var(--text);
}

.video-preview-info p {
  color: var(--text-muted);
  font-size: 14px;
}

/* =========================================================
   ПРЕВЬЮ ВИДЕО — ВСТРОЕННЫЙ ПЛЕЕР
   Когда видео уже играет внутри карточки
   ========================================================= */

.video-preview-card.is-playing {
  cursor: default;
}

.video-preview-card.is-playing:hover {
  box-shadow: none;
}

.video-preview-card.is-playing:hover .video-preview-thumb {
  transform: none;
}

.video-preview-card.is-playing:hover .video-preview-thumb img {
  transform: none;
}

.video-preview-card.is-playing .video-preview-play {
  display: none;
}

/* aspect-ratio убираем на время воспроизведения */
.video-preview-card.is-playing .video-preview-thumb {
  aspect-ratio: auto;
  background: #000;
  transform: none;
  overflow: visible;
}

.video-preview-card.is-playing .video-preview-thumb video {
  display: block;
  width: 100%;
  height: auto;
  max-height: 500px;
  background: #000;
  border: none;
}

.video-preview-card.is-playing .video-preview-thumb iframe {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: none;
  background: #000;
}

/* Fullscreen для видео — корректное растягивание */
.video-preview-card.is-playing .video-preview-thumb video:fullscreen {
  width: 100vw;
  height: 100vh;
  max-height: none;
  object-fit: contain;
}

.video-preview-card.is-playing .video-preview-thumb video:-webkit-full-screen {
  width: 100vw;
  height: 100vh;
  max-height: none;
  object-fit: contain;
}

/* =========================================================
   LIGHTBOX
   ========================================================= */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.93);
  z-index: 9999;
  display: none;
  place-items: center;
  padding: 40px 20px;
  cursor: zoom-out;
  animation: fadeIn 0.25s ease;
}

.lightbox.active { display: grid; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.lightbox-img {
  max-width: 92%;
  max-height: 88vh;
  border-radius: 12px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6);
  animation: zoomIn 0.3s ease;
}

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

.lightbox-close {
  position: absolute;
  top: 25px; right: 30px;
  background: none;
  border: none;
  color: #fff;
  font-size: 38px;
  cursor: pointer;
  line-height: 1;
  transition: color 0.2s;
}

.lightbox-close:hover { color: var(--accent); }

/* =========================================================
   ADVANTAGES
   ========================================================= */
.advantages { background: var(--bg-medium); }

.adv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.adv-item {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border-radius: 14px;
  border: 1px solid var(--border);
  transition: all 0.3s;
}

.adv-item:hover { border-color: var(--accent); transform: translateY(-4px); }

.adv-num {
  font-size: 42px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 12px;
}

.adv-item h4 { font-size: 17px; margin-bottom: 8px; }
.adv-item p { color: var(--text-muted); font-size: 14px; }

/* =========================================================
   PROCESS
   ========================================================= */
.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
  position: relative;
}

.step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  position: relative;
}

.step-num {
  position: absolute;
  top: -18px;
  left: 24px;
  width: 40px; height: 40px;
  background: var(--accent);
  color: #1a1a1a;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 18px;
}

.step h4 { margin-top: 12px; margin-bottom: 10px; font-size: 17px; }
.step p { color: var(--text-muted); font-size: 14px; }

/* =========================================================
   DOWNLOAD
   ========================================================= */
.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px 30px;
  text-align: center;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.download-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}

.download-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 184, 0, 0.5);
  background: var(--bg-light);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.download-card:hover::before { transform: scaleX(1); }

.download-icon {
  width: 80px; height: 80px;
  background: rgba(255, 184, 0, 0.1);
  border: 2px solid rgba(255, 184, 0, 0.3);
  border-radius: 20px;
  display: grid;
  place-items: center;
  font-size: 40px;
  margin-bottom: 22px;
  transition: all 0.3s;
}

.download-card:hover .download-icon {
  background: rgba(255, 184, 0, 0.2);
  border-color: var(--accent);
  transform: scale(1.05);
}

.download-card h3 { font-size: 20px; margin-bottom: 8px; font-weight: 700; }

.download-card .download-desc {
  color: var(--text-muted);
  font-size: 14px;
  margin-bottom: 22px;
  line-height: 1.5;
}

.download-meta {
  display: flex;
  gap: 16px;
  justify-content: center;
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
  width: 100%;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 28px;
  background: var(--accent);
  color: #1a1a1a;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  transition: all 0.25s;
}

.download-card:hover .download-btn {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 184, 0, 0.3);
}

.download-note {
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 40px;
}

.download-note a {
  color: var(--accent);
  text-decoration: none;
}

.download-note a:hover { text-decoration: underline; }

/* =========================================================
   CTA
   ========================================================= */
.cta {
  background: linear-gradient(135deg, #262626 0%, #2d2d2d 100%);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: -50%; right: -10%;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(255, 184, 0, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta h2 { font-size: clamp(26px, 3.5vw, 36px); margin-bottom: 16px; position: relative; }

.cta p {
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 auto 32px;
  position: relative;
}

/* =========================================================
   CONTACTS
   ========================================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: start;
}

.contact-info h3 { font-size: 24px; margin-bottom: 20px; }
.contact-info p { color: var(--text-muted); margin-bottom: 30px; }

.contact-item {
  display: flex;
  gap: 16px;
  margin-bottom: 22px;
  align-items: flex-start;
}

.contact-item-icon {
  width: 44px; height: 44px;
  background: rgba(255, 184, 0, 0.1);
  border: 1px solid rgba(255, 184, 0, 0.3);
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 18px;
  color: var(--accent);
  flex-shrink: 0;
}

.contact-item-label { font-size: 13px; color: var(--text-muted); margin-bottom: 3px; }
.contact-item-value { font-size: 16px; font-weight: 600; color: var(--text); }
.contact-item-value a { color: var(--text); text-decoration: none; }
.contact-item-value a:hover { color: var(--accent); }

form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px;
}

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

.form-group label {
  display: block;
  font-size: 14px;
  margin-bottom: 8px;
  color: var(--text-muted);
}

.form-group input[type="text"],
.form-group input[type="tel"],
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 13px 16px;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea { resize: vertical; min-height: 100px; }

form .btn-primary { width: 100%; padding: 16px; }

.form-note {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 14px;
}

.form-error {
  background: rgba(255, 87, 87, 0.1);
  border: 1px solid rgba(255, 87, 87, 0.4);
  color: #ff5757;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 16px;
  display: none;
}

.form-error.active { display: block; }

.form-success {
  display: none;
  text-align: center;
  padding: 50px 30px;
  background: var(--bg-card);
  border: 1px solid rgba(255, 184, 0, 0.5);
  border-radius: 16px;
}

.form-success.active { display: block; }

.form-success-icon {
  width: 70px; height: 70px;
  margin: 0 auto 20px;
  background: rgba(255, 184, 0, 0.15);
  border: 2px solid var(--accent);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 36px;
  color: var(--accent);
}

.form-success h3 { font-size: 24px; margin-bottom: 10px; }
.form-success p { color: var(--text-muted); font-size: 15px; }

/* =========================================================
   PAGE HEADER (для внутренних страниц)
   ========================================================= */
.page-header {
  padding: 150px 0 40px;
  text-align: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 184, 0, 0.08) 0%, transparent 60%),
    var(--bg-dark);
  border-bottom: 1px solid var(--border);
}

.page-header h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.page-header p {
  color: var(--text-muted);
  font-size: 16px;
  max-width: 600px;
  margin: 0 auto;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 30px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
  transition: gap 0.2s;
}

.back-link:hover { gap: 12px; }

/* =========================================================
   FOOTER
   ========================================================= */
footer {
  background: #141414;
  border-top: 1px solid var(--border);
  padding: 50px 0 25px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  font-size: 15px;
  margin-bottom: 18px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-col p,
.footer-col a {
  color: var(--text-muted);
  font-size: 14px;
  text-decoration: none;
  display: block;
  margin-bottom: 10px;
  transition: color 0.2s;
}

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

.footer-bottom {
  text-align: center;
  padding-top: 25px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 13px;
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 900px) {
  nav ul { display: none; }
  nav.active ul {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--bg-medium);
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
  }
  .burger { display: block; }
  .header-phone { display: none; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .preview-columns {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

@media (max-width: 520px) {
  section { padding: 60px 0; }
  .hero { padding: 130px 0 70px; }
  .page-header { padding: 130px 0 30px; }
  .hero-card { padding: 24px; }
  form { padding: 24px; }
  .cta { padding: 40px 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .download-card { padding: 28px 22px; }
  .download-icon { width: 66px; height: 66px; font-size: 32px; }
  .video-preview-play { width: 56px; height: 56px; font-size: 22px; }
  .preview-column { padding: 24px 20px; }
  .preview-column .preview-photos { gap: 10px; }
  .preview-column-head h3 { font-size: 19px; }
}