:root {
  --bg: #050505;
  --bg-secondary: #0c0c0c;
  --surface: #101010;
  --surface-2: #151515;
  --text: #ffffff;
  --text-soft: #a8a8a8;
  --text-muted: #777777;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.18);
  --primary: #ffffff;
  --primary-text: #000000;
  --secondary-btn-bg: transparent;
  --secondary-btn-text: #ffffff;
  --card-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --overlay: rgba(0, 0, 0, 0.78);
  --preview-border: #1f1f1f;
  --accent-glow: none;
}

body.theme-blue {
  --bg: #eaf6ff;
  --bg-secondary: #d8efff;
  --surface: #ffffff;
  --surface-2: #f2fbff;
  --text: #0f172a;
  --text-soft: #4b5e7a;
  --text-muted: #71839b;
  --border: rgba(0, 140, 255, 0.16);
  --border-strong: rgba(0, 140, 255, 0.35);
  --primary: #00aff0;
  --primary-text: #ffffff;
  --secondary-btn-bg: #ffffff;
  --secondary-btn-text: #00aff0;
  --card-shadow: 0 18px 50px rgba(0, 136, 255, 0.12);
  --overlay: rgba(8, 22, 40, 0.62);
  --preview-border: #00aff0;
  --accent-glow: 0 0 0 1px rgba(0, 175, 240, 0.08), 0 18px 50px rgba(0, 175, 240, 0.14);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background:
    radial-gradient(circle at top left, rgba(255,255,255,0.03), transparent 30%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background 0.35s ease, color 0.35s ease;
}

body.theme-blue {
  background:
    radial-gradient(circle at top left, rgba(0, 175, 240, 0.18), transparent 28%),
    radial-gradient(circle at bottom right, rgba(0, 175, 240, 0.10), transparent 30%),
    linear-gradient(180deg, #f4fbff 0%, #eaf6ff 100%);
}

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

button {
  font: inherit;
}

.header {
  padding: 24px 40px;
}

.navbar {
  max-width: 1320px;
  margin: 0 auto;
  min-height: 64px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.7px;
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-links a {
  color: var(--text-soft);
  font-size: 15px;
  transition: color 0.2s ease;
}

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

.theme-toggle {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 12px 18px;
  cursor: pointer;
  transition: 0.25s ease;
  box-shadow: var(--accent-glow);
}

.theme-toggle:hover {
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.hero {
  max-width: 1320px;
  margin: 0 auto;
  min-height: calc(100vh - 110px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 70px;
  padding: 30px 40px 80px;
}

.hero-left {
  max-width: 680px;
}

.hero-label {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.hero-left h1 {
  font-size: 64px;
  line-height: 1.05;
  letter-spacing: -2px;
  margin-bottom: 24px;
}

.hero-text {
  color: var(--text-soft);
  font-size: 21px;
  line-height: 1.7;
  max-width: 620px;
  margin-bottom: 34px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  border-radius: 999px;
  font-size: 15px;
  border: 1px solid transparent;
  transition: 0.25s ease;
}

.btn.primary {
  background: var(--primary);
  color: var(--primary-text);
  box-shadow: var(--accent-glow);
}

.btn.primary:hover {
  transform: translateY(-1px);
  opacity: 0.95;
}

.btn.secondary {
  background: var(--secondary-btn-bg);
  color: var(--secondary-btn-text);
  border-color: var(--border);
}

.btn.secondary:hover {
  border-color: var(--border-strong);
  background: var(--surface);
}

.hero-right {
  display: flex;
  justify-content: center;
}

.preview-grid {
  width: 100%;
  max-width: 760px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
}

.preview-item {
  position: relative;
  overflow: hidden;
  border-radius: 22px;
  border: 1px solid var(--preview-border);
  background: var(--surface);
  box-shadow: var(--card-shadow);
  cursor: pointer;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.preview-item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.18), transparent 40%);
  pointer-events: none;
}

.preview-item:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  box-shadow: var(--card-shadow), var(--accent-glow);
}

.preview-item img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  display: block;
  transition: transform 0.35s ease;
}

.preview-item:hover img {
  transform: scale(1.04);
}

.info-strip {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 40px 100px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.info-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 28px;
  box-shadow: var(--accent-glow);
  transition: 0.25s ease;
}

.info-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
}

.info-card h3 {
  font-size: 22px;
  margin-bottom: 10px;
  letter-spacing: -0.4px;
}

.info-card p {
  font-size: 15px;
  color: var(--text-soft);
  line-height: 1.7;
}

/* MODAL */
.image-modal {
  position: fixed;
  inset: 0;
  background: var(--overlay);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 999;
  backdrop-filter: blur(8px);
}

.image-modal.active {
  opacity: 1;
  pointer-events: auto;
}

.image-modal-content {
  position: relative;
  width: min(68vw, 1150px);
  height: min(80vh, 820px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 26px;
  padding: 22px;
  box-shadow: var(--card-shadow), var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
}

.image-modal-content img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 16px;
  display: block;
  background: var(--bg-secondary);
}

.close-modal {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font-size: 28px;
  cursor: pointer;
  z-index: 5;
  transition: 0.2s ease;
}

.close-modal:hover {
  border-color: var(--border-strong);
}

.arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font-size: 28px;
  cursor: pointer;
  z-index: 5;
  transition: 0.2s ease;
}

.arrow:hover {
  border-color: var(--border-strong);
  transform: translateY(-50%) scale(1.04);
}

.arrow.left {
  left: 16px;
}

.arrow.right {
  right: 16px;
}

@media (max-width: 1200px) {
  .hero-left h1 {
    font-size: 54px;
  }

  .hero-text {
    font-size: 19px;
  }
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 50px;
    min-height: auto;
    padding-top: 20px;
  }

  .hero-left {
    max-width: 100%;
  }

  .preview-grid {
    max-width: 100%;
  }

  .info-strip {
    grid-template-columns: 1fr;
  }

  .image-modal-content {
    width: 92vw;
    height: 74vh;
  }
}

@media (max-width: 768px) {
  .header,
  .hero,
  .info-strip {
    padding-left: 20px;
    padding-right: 20px;
  }

  .navbar {
    flex-wrap: wrap;
    justify-content: center;
  }

  .nav-links {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: 18px;
  }

  .theme-toggle {
    width: 100%;
  }

  .hero-left h1 {
    font-size: 40px;
    letter-spacing: -1.2px;
  }

  .hero-text {
    font-size: 17px;
  }

  .preview-grid {
    grid-template-columns: 1fr;
  }

  .preview-item img {
    height: 220px;
  }
}

@media (max-width: 480px) {
  .hero {
    padding-bottom: 60px;
  }

  .hero-left h1 {
    font-size: 34px;
  }

  .buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .image-modal-content {
    width: 94vw;
    height: 68vh;
    padding: 18px;
  }

  .arrow {
    width: 44px;
    height: 44px;
    font-size: 24px;
  }

  .close-modal {
    width: 42px;
    height: 42px;
  }
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.social-links {
  display: flex;
  align-items: center;
  gap: 10px;
}

.social-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  transition: 0.25s ease;
  box-shadow: var(--accent-glow);
}

.social-icon svg {
  width: 19px;
  height: 19px;
  display: block;
}

.social-icon:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  background: var(--surface-2);
}

.contact-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
}

.contact-hint {
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}

.page-hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 40px 70px;
}

.page-hero h1 {
  font-size: 62px;
  line-height: 1.05;
  letter-spacing: -2px;
  max-width: 900px;
  margin-bottom: 24px;
}

.page-text {
  max-width: 760px;
  font-size: 20px;
  line-height: 1.7;
  color: var(--text-soft);
}

.comparison-section {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 40px 80px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
}

.comparison-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 28px;
  padding: 34px;
  box-shadow: var(--accent-glow);
}

.comparison-negative {
  border-color: var(--border);
}

.comparison-positive {
  border-color: var(--border-strong);
}

.section-mini-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.8px;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.comparison-card h2 {
  font-size: 32px;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -0.8px;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.feature-list li {
  position: relative;
  padding-left: 22px;
  color: var(--text-soft);
  line-height: 1.7;
}

.feature-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--text);
}

.reason-blocks {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 40px 90px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.reason-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 30px;
  transition: 0.25s ease;
}

.reason-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
}

.reason-card h3 {
  font-size: 24px;
  line-height: 1.25;
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.reason-card p {
  color: var(--text-soft);
  line-height: 1.75;
  font-size: 15px;
}

.closing-cta {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 40px 100px;
}

.closing-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 30px;
  padding: 48px;
  text-align: center;
  box-shadow: var(--accent-glow);
}

.closing-box h2 {
  font-size: 46px;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 16px;
}

.closing-box p {
  color: var(--text-soft);
  font-size: 18px;
  margin-bottom: 28px;
}

.center-buttons {
  justify-content: center;
}

@media (max-width: 980px) {
  .page-hero h1 {
    font-size: 46px;
    letter-spacing: -1.2px;
  }

  .page-text {
    font-size: 18px;
  }

  .comparison-section {
    grid-template-columns: 1fr;
  }

  .reason-blocks {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .page-hero,
  .comparison-section,
  .reason-blocks,
  .closing-cta {
    padding-left: 20px;
    padding-right: 20px;
  }

  .page-hero {
    padding-top: 20px;
    padding-bottom: 50px;
  }

  .page-hero h1 {
    font-size: 36px;
  }

  .comparison-card,
  .closing-box,
  .reason-card {
    padding: 24px;
  }

  .comparison-card h2 {
    font-size: 26px;
  }

  .closing-box h2 {
    font-size: 34px;
  }

  .closing-box p {
    font-size: 16px;
  }
}

.features-grid {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 40px 100px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 24px;
  transition: 0.25s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
}

.feature-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.6;
}

@media (max-width: 1100px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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