:root {
  --font-base: "Inter", sans-serif;
  --container: 1180px;
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --transition: 0.22s ease;
}

html[data-theme="dark"] {
  --bg: #08101d;
  --bg-secondary: #0d1729;
  --surface: rgba(255, 255, 255, 0.06);
  --surface-strong: rgba(255, 255, 255, 0.09);
  --card: rgba(11, 19, 34, 0.9);
  --card-soft: rgba(14, 24, 42, 0.86);
  --text: #f4f7fb;
  --text-soft: #dbe4f2;
  --muted: #97a6bc;
  --border: rgba(255, 255, 255, 0.1);
  --primary: #5b7cff;
  --primary-hover: #496cf4;
  --primary-soft: rgba(91, 124, 255, 0.14);
  --success: #18c964;
  --success-soft: rgba(24, 201, 100, 0.12);
  --shadow: 0 24px 64px rgba(0, 0, 0, 0.28);
  --shadow-soft: 0 14px 34px rgba(0, 0, 0, 0.18);
  --hero-glow-a: rgba(91, 124, 255, 0.2);
  --hero-glow-b: rgba(24, 201, 100, 0.12);
  --theme-color: #0b1220;
}

html[data-theme="light"] {
  --bg: #f5f8fc;
  --bg-secondary: #edf3fb;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-strong: rgba(255, 255, 255, 0.96);
  --card: rgba(255, 255, 255, 0.96);
  --card-soft: rgba(255, 255, 255, 0.88);
  --text: #111a2d;
  --text-soft: #263248;
  --muted: #5f6d83;
  --border: rgba(17, 26, 45, 0.08);
  --primary: #466cff;
  --primary-hover: #3559ea;
  --primary-soft: rgba(70, 108, 255, 0.1);
  --success: #0ea85a;
  --success-soft: rgba(14, 168, 90, 0.1);
  --shadow: 0 20px 48px rgba(18, 35, 62, 0.08);
  --shadow-soft: 0 12px 24px rgba(18, 35, 62, 0.06);
  --hero-glow-a: rgba(70, 108, 255, 0.08);
  --hero-glow-b: rgba(14, 168, 90, 0.06);
  --theme-color: #f5f8fc;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--text);
  background:
    radial-gradient(circle at top left, var(--hero-glow-a), transparent 26%),
    radial-gradient(circle at bottom right, var(--hero-glow-b), transparent 24%),
    var(--bg);
  overflow-x: hidden;
}

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

button,
input,
textarea,
select {
  font: inherit;
}

.site-shell {
  min-height: 100vh;
}

.container {
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
}

.header {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter: blur(14px);
}

.nav {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-badge {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  font-size: 18px;
  font-weight: 900;
  color: #ffffff;
  background: linear-gradient(135deg, var(--primary), var(--success));
  box-shadow: var(--shadow-soft);
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.brand-text strong {
  font-size: 15px;
  line-height: 1.2;
}

.brand-text span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.3;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
}

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

.nav-link:hover {
  color: var(--text);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.theme-toggle {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
  box-shadow: var(--shadow-soft);
}

.theme-toggle:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
}

.hero {
  padding: 56px 0 36px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 28px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--primary) 28%, var(--border));
  background: var(--primary-soft);
  color: var(--text);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.2px;
}

.hero-copy h1 {
  margin: 18px 0 16px;
  font-size: clamp(34px, 5vw, 60px);
  line-height: 1.02;
  letter-spacing: -1.8px;
  max-width: 720px;
}

.hero-text {
  margin: 0;
  max-width: 760px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.hero-points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0;
}

.point-card {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 72px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.point-card span:last-child {
  font-weight: 700;
  color: var(--text-soft);
  line-height: 1.45;
}

.point-icon {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: var(--success-soft);
  color: var(--success);
  font-weight: 900;
  flex-shrink: 0;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-microcopy {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.hero-panel {
  min-width: 0;
}

.window-card {
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface-strong), var(--card));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.window-bar {
  height: 54px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 18px;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 80%, transparent);
}

.window-bar span {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--muted) 36%, transparent);
}

.window-content {
  padding: 22px;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}

.panel-head small {
  display: block;
  color: var(--muted);
  margin-bottom: 6px;
}

.panel-head h2 {
  margin: 0;
  font-size: 30px;
  letter-spacing: -0.8px;
}

.live-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  color: var(--success);
  background: var(--success-soft);
  border: 1px solid color-mix(in srgb, var(--success) 24%, var(--border));
  white-space: nowrap;
}

.feature-matrix {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.mini-card {
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface);
}

.mini-card strong {
  display: block;
  margin-bottom: 6px;
  font-size: 15px;
}

.mini-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
  font-size: 14px;
}

.offer-box {
  margin-top: 18px;
  padding: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--primary) 22%, var(--border));
  background: linear-gradient(135deg, var(--primary-soft), color-mix(in srgb, var(--success) 6%, transparent));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.offer-copy {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.offer-copy strong {
  font-size: 34px;
  line-height: 1.05;
  letter-spacing: -1px;
}

.offer-copy small {
  color: var(--muted);
  font-weight: 600;
}

.old-price {
  color: var(--muted);
  text-decoration: line-through;
  font-weight: 700;
}

.metrics {
  padding: 8px 0 0;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.metric-card {
  padding: 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.metric-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 17px;
}

.metric-card span {
  color: var(--muted);
  line-height: 1.6;
  font-size: 14px;
}

.section {
  padding: 84px 0;
}

.section-alt {
  background: color-mix(in srgb, var(--bg-secondary) 74%, transparent);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 30px;
}

.section-heading h2 {
  margin: 16px 0 14px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.08;
  letter-spacing: -1.2px;
}

.section-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.benefit-card {
  padding: 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition), border-color var(--transition);
}

.benefit-card:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--primary) 28%, var(--border));
}

.benefit-icon {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: var(--primary-soft);
  font-size: 24px;
  margin-bottom: 14px;
}

.benefit-card h3 {
  margin: 0 0 10px;
  font-size: 20px;
}

.benefit-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 15px;
}

.split-grid {
  display: grid;
  grid-template-columns: 1fr 0.95fr;
  gap: 24px;
  align-items: center;
}

.copy-block h2 {
  margin: 16px 0 14px;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.08;
  letter-spacing: -1.2px;
}

.copy-block p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.clean-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.clean-list li {
  position: relative;
  padding-left: 28px;
  color: var(--text-soft);
  font-weight: 600;
  line-height: 1.55;
}

.clean-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--success);
  font-weight: 900;
}

.stack-cards {
  display: grid;
  gap: 14px;
}

.stack-card {
  padding: 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.stack-card small {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--muted);
  font-weight: 700;
}

.stack-card strong {
  font-size: 18px;
  line-height: 1.55;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.step-card {
  padding: 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-soft);
}

.step-number {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 900;
  margin-bottom: 14px;
}

.step-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 18px;
}

.step-card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

.pricing-layout {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 22px;
  align-items: stretch;
  padding: 28px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface-strong), var(--card));
  box-shadow: var(--shadow);
}

.pricing-copy h2 {
  margin: 16px 0 14px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.08;
  letter-spacing: -1.2px;
}

.pricing-copy p {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.75;
}

.pricing-card {
  padding: 26px;
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--primary) 20%, var(--border));
  background: var(--card-soft);
}

.muted-label {
  display: inline-block;
  color: var(--muted);
  font-weight: 700;
  font-size: 13px;
}

.muted-space {
  margin-top: 12px;
}

.old-price-large {
  font-size: 30px;
  margin-top: 8px;
}

.price-main {
  margin-top: 8px;
  font-size: 54px;
  line-height: 1;
  font-weight: 900;
  letter-spacing: -2px;
}

.price-support {
  margin: 12px 0 18px;
  color: var(--text-soft);
  font-weight: 600;
}

.secure-box {
  margin-top: 14px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.secure-box p {
  margin: 0;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--surface);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.faq-question {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--text);
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  text-align: left;
  font-weight: 800;
  font-size: 16px;
}

.faq-plus {
  font-size: 24px;
  line-height: 1;
  transition: transform var(--transition);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.28s ease;
}

.faq-answer p {
  margin: 0;
  padding: 0 24px 22px;
  color: var(--muted);
  line-height: 1.75;
  font-size: 15px;
}

.faq-item.active .faq-answer {
  max-height: 260px;
}

.faq-item.active .faq-plus {
  transform: rotate(45deg);
}

.cta-banner {
  padding: 28px;
  border-radius: var(--radius-xl);
  border: 1px solid color-mix(in srgb, var(--primary) 20%, var(--border));
  background: linear-gradient(135deg, var(--primary-soft), color-mix(in srgb, var(--success) 5%, transparent));
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cta-copy h2 {
  margin: 16px 0 10px;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.08;
  letter-spacing: -1px;
}

.cta-copy p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 16px;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  border: 0;
  cursor: pointer;
  min-height: 52px;
  padding: 0 20px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 800;
  font-size: 15px;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), opacity var(--transition);
}

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

.btn:disabled {
  opacity: 0.72;
  cursor: not-allowed;
}

.btn-primary {
  color: #ffffff;
  background: linear-gradient(135deg, var(--primary), color-mix(in srgb, var(--primary) 84%, #7aa0ff));
  box-shadow: 0 14px 26px color-mix(in srgb, var(--primary) 24%, transparent);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-hover), color-mix(in srgb, var(--primary-hover) 84%, #6a92ff));
}

.btn-outline {
  color: var(--text);
  background: transparent;
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: color-mix(in srgb, var(--primary) 28%, var(--border));
}

.btn-lg {
  min-height: 58px;
  padding: 0 24px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

.btn-nav {
  min-height: 44px;
  padding: 0 18px;
  border-radius: 14px;
}

.status-banner {
  position: fixed;
  top: 96px;
  right: 18px;
  z-index: 60;
  max-width: 360px;
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: var(--card);
  box-shadow: var(--shadow);
  transform: translateY(-12px);
  opacity: 0;
  pointer-events: none;
  transition: 0.22s ease;
}

.status-banner.show {
  transform: translateY(0);
  opacity: 1;
}

.status-banner.success {
  border-color: color-mix(in srgb, var(--success) 36%, var(--border));
}

.status-banner.warning {
  border-color: rgba(245, 165, 36, 0.36);
}

.status-banner.error {
  border-color: rgba(243, 18, 96, 0.36);
}

.sticky-buy {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 45;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 12px 12px 16px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--card) 92%, transparent);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

.sticky-copy {
  min-width: 0;
}

.sticky-copy small {
  display: block;
  color: var(--muted);
  margin-bottom: 4px;
  font-weight: 600;
}

.sticky-copy strong {
  font-size: 20px;
  line-height: 1;
}

@media (max-width: 1140px) {
  .hero-grid,
  .split-grid,
  .pricing-layout {
    grid-template-columns: 1fr;
  }

  .metrics-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .benefits-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .steps-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pricing-card {
    max-width: 520px;
  }
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .hero {
    padding-top: 42px;
  }

  .hero-copy h1 {
    max-width: none;
  }

  .feature-matrix,
  .hero-points,
  .benefits-grid,
  .metrics-grid,
  .steps-grid {
    grid-template-columns: 1fr;
  }

  .offer-box,
  .cta-banner {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-actions {
    width: 100%;
  }

  .cta-actions .btn {
    width: 100%;
  }

  .price-main {
    font-size: 46px;
  }

  .sticky-buy {
    display: flex;
  }

  body {
    padding-bottom: 94px;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 20px, var(--container));
  }

  .nav {
    min-height: 74px;
  }

  .brand-badge {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    font-size: 16px;
  }

  .brand-text span {
    font-size: 12px;
  }

  .btn-nav {
    min-height: 42px;
    padding: 0 14px;
    font-size: 14px;
  }

  .theme-toggle {
    width: 40px;
    height: 40px;
  }

  .hero-copy h1,
  .section-heading h2,
  .copy-block h2,
  .pricing-copy h2,
  .cta-copy h2 {
    letter-spacing: -1px;
  }

  .hero-text,
  .section-heading p,
  .copy-block p,
  .pricing-copy p {
    font-size: 16px;
  }

  .hero-cta {
    flex-direction: column;
  }

  .hero-cta .btn {
    width: 100%;
  }

  .window-content,
  .pricing-layout,
  .cta-banner {
    padding: 20px;
  }

  .faq-question {
    padding: 18px 18px;
    font-size: 15px;
  }

  .faq-answer p {
    padding: 0 18px 18px;
  }

  .status-banner {
    left: 12px;
    right: 12px;
    top: 84px;
    max-width: none;
  }

  .sticky-buy {
    flex-direction: row;
    align-items: center;
  }

  .sticky-buy .btn {
    min-width: 120px;
  }
}

@media (max-width: 480px) {
  .brand-text span {
    display: none;
  }

  .nav {
    gap: 10px;
  }

  .nav-actions {
    gap: 8px;
  }

  .btn-nav {
    padding: 0 12px;
  }

  .offer-copy strong {
    font-size: 28px;
  }

  .old-price-large {
    font-size: 24px;
  }

  .price-main {
    font-size: 40px;
  }
}