:root {
  --bg: #07101d;
  --bg-soft: #0d1527;
  --panel: rgba(15, 23, 40, .82);
  --panel-2: rgba(10, 18, 32, .92);
  --line: rgba(255, 255, 255, .1);
  --text: #f5f7fb;
  --muted: #9fb0c9;
  --soft: #c9d6ea;
  --primary: #73a9ff;
  --primary-2: #9ce9ff;
  --accent: #7cf1c4;
  --danger: #ff8b8b;
  --shadow: 0 24px 80px rgba(0, 0, 0, .36);
  --radius: 26px;
  --radius-sm: 18px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(115, 169, 255, .2), transparent 28%),
    radial-gradient(circle at left center, rgba(156, 233, 255, .12), transparent 26%),
    linear-gradient(180deg, #06101c 0%, #091323 38%, #060c16 100%);
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
code {
  background: rgba(255, 255, 255, .08);
  padding: .2rem .45rem;
  border-radius: 9px;
}

.container { width: min(var(--container), calc(100% - 32px)); margin: 0 auto; }
.narrow { width: min(880px, calc(100% - 32px)); }
.site-shell { min-height: 100vh; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.top-strip {
  border-bottom: 1px solid rgba(255, 255, 255, .05);
  background: rgba(5, 10, 20, .45);
}
.top-strip-inner {
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
  font-size: .88rem;
}
.top-strip a {
  color: var(--primary-2);
  white-space: nowrap;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: rgba(8, 13, 24, .72);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}
.nav-wrap {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
.brand strong {
  display: block;
  font-size: 1rem;
  letter-spacing: -.02em;
}
.brand small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
}
.brand-mark {
  width: 46px;
  height: 46px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary-2), var(--primary));
  color: #04111f;
  font-weight: 800;
  box-shadow: 0 14px 40px rgba(115, 169, 255, .34);
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
}
.site-nav a:not(.btn) { color: var(--muted); }
.site-nav a:not(.btn):hover { color: var(--text); }
.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  border-radius: 14px;
  padding: .72rem 1rem;
}

.hero,
.page-hero { padding: 70px 0 34px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 30px;
  align-items: center;
}
.hero h1,
.page-hero h1,
.thankyou-panel h1 {
  margin: 12px 0 16px;
  font-size: clamp(2.35rem, 5vw, 4.45rem);
  line-height: .98;
  letter-spacing: -.05em;
}
.lead {
  max-width: 760px;
  color: var(--soft);
  font-size: 1.08rem;
  line-height: 1.72;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: .5rem .82rem;
  border-radius: 999px;
  border: 1px solid rgba(156, 233, 255, .25);
  background: rgba(156, 233, 255, .08);
  color: var(--primary-2);
  font-size: .8rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.hero-actions,
.cta-actions,
.selector-actions,
.sidebar-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.key-points,
.check-list,
.contact-list {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
}
.key-points li,
.check-list li,
.contact-list li {
  position: relative;
  padding-left: 28px;
  margin: 0 0 12px;
  color: #dbe5f6;
  line-height: 1.62;
}
.key-points li::before,
.check-list li::before,
.contact-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .48rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-2), var(--accent));
  box-shadow: 0 0 0 4px rgba(115, 169, 255, .12);
}
.warning-list li::before {
  background: linear-gradient(135deg, #ffc8a3, var(--danger));
  box-shadow: 0 0 0 4px rgba(255, 139, 139, .14);
}

.glass-panel,
.glass-card {
  background: linear-gradient(180deg, rgba(17, 28, 47, .86), rgba(11, 20, 36, .92));
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}
.glass-panel { padding: 30px; }
.glass-card { padding: 24px; }
.hero-panel { display: grid; gap: 20px; }
.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.metric-card {
  padding: 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, .04);
  border: 1px solid rgba(255, 255, 255, .06);
}
.metric-card strong {
  display: block;
  font-size: 1.5rem;
  line-height: 1;
}
.metric-card span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: .94rem;
  line-height: 1.45;
}
.hero-note h3,
.hero-note p { margin: 0; }
.hero-note p {
  margin-top: 10px;
  color: var(--soft);
  line-height: 1.68;
}

.section { padding: 36px 0; }
.section-soft { background: linear-gradient(180deg, rgba(255, 255, 255, .018), rgba(255, 255, 255, 0)); }
.section-head { margin-bottom: 22px; }
.section-head.left { margin-bottom: 18px; }
.section h2,
.prose h1,
.prose h2 {
  margin: 12px 0 14px;
  font-size: clamp(1.9rem, 4vw, 2.9rem);
  line-height: 1.06;
  letter-spacing: -.04em;
}
.section p,
.prose p,
.mini-copy { color: var(--soft); line-height: 1.74; }
.mini-copy strong { color: var(--text); }
.gap-top { margin-top: 20px; }
.align-center { align-items: center; }

.grid { display: grid; gap: 18px; }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.feature-card h3,
.product-card h3,
.product-card h2,
.compare-mini-card h3 {
  margin: 0 0 10px;
  font-size: 1.34rem;
}
.icon-dot {
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary-2), var(--accent));
  margin-bottom: 16px;
  box-shadow: 0 0 0 10px rgba(115, 169, 255, .08);
}
.product-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
.wide-topline { margin-bottom: 6px; }
.badge,
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, .1);
  background: rgba(255, 255, 255, .05);
  color: #e7f1ff;
  padding: .46rem .8rem;
  font-size: .84rem;
}
.muted {
  color: var(--muted);
  font-size: .92rem;
}
.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  color: var(--primary-2);
}
.arrow-link:hover { color: #fff; }
.spec-list { list-style: none; padding: 0; margin: 18px 0 0; }
.spec-list li {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 0;
  border-top: 1px solid rgba(255, 255, 255, .07);
}
.spec-list li span { color: var(--muted); }
.spec-list.compact li { padding: 10px 0; }
.split-grid {
  display: grid;
  grid-template-columns: 1fr .9fr;
  gap: 24px;
  align-items: start;
}
.sidebar-specs {
  position: sticky;
  top: 106px;
}
.sidebar-note {
  margin-top: 18px;
  color: var(--muted);
  font-size: .94rem;
  line-height: 1.6;
}
.intro-panel h2,
.intro-panel p { margin-top: 0; }
.related-panel h2 { margin-top: 10px; }

.selector-shell { display: grid; gap: 20px; }
.selector-card { display: grid; gap: 20px; }
.selector-step { display: grid; gap: 12px; }
.selector-title {
  font-weight: 700;
  color: var(--text);
}
.selector-options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.selector-option {
  border: 1px solid rgba(255, 255, 255, .09);
  background: rgba(255, 255, 255, .04);
  color: var(--text);
  border-radius: 16px;
  padding: .95rem 1rem;
  cursor: pointer;
  transition: .2s ease;
}
.selector-option.is-active {
  background: linear-gradient(135deg, rgba(156, 233, 255, .18), rgba(115, 169, 255, .18));
  border-color: rgba(156, 233, 255, .4);
}
.selector-placeholder {
  color: var(--muted);
  line-height: 1.65;
}
.selector-recommendation {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 18px;
  padding-top: 6px;
}
.selector-recommendation h3,
.selector-recommendation h4 {
  margin: 6px 0 10px;
}
.selector-label {
  font-size: .82rem;
  letter-spacing: .12em;
  color: var(--primary-2);
  text-transform: uppercase;
}
.selector-alt {
  padding: 18px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, .08);
  background: rgba(255, 255, 255, .03);
}

.catalog-toolbar {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.chip { cursor: pointer; }
.chip.active {
  background: linear-gradient(135deg, rgba(156, 233, 255, .18), rgba(115, 169, 255, .18));
  border-color: rgba(156, 233, 255, .35);
}
.search-input input {
  width: 100%;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, .1);
  padding: 1rem 1.05rem;
  background: rgba(255, 255, 255, .04);
  color: var(--text);
}
.empty-state {
  margin-top: 16px;
  padding: 16px 18px;
  border-radius: 16px;
  color: var(--muted);
  border: 1px dashed rgba(255, 255, 255, .12);
}

.table-wrap { overflow-x: auto; }
.compare-table {
  width: 100%;
  min-width: 980px;
  border-collapse: collapse;
}
.compare-table th,
.compare-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.compare-table th { color: #ebf3ff; font-size: .92rem; }
.compare-table td { color: #d6e0ef; }
.compare-table a { color: var(--primary-2); }
.table-note {
  margin-top: 4px;
  color: var(--muted);
  font-size: .84rem;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  margin-bottom: 14px;
}
.faq-wrap { display: grid; gap: 18px; }
.faq-list { display: grid; gap: 16px; }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item p { margin: 14px 0 0; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.form-grid label,
.lead-form label {
  display: grid;
  gap: 8px;
}
.form-grid .full-width { grid-column: 1 / -1; }
input,
select,
textarea {
  width: 100%;
  border-radius: 15px;
  border: 1px solid rgba(255, 255, 255, .12);
  padding: .96rem 1rem;
  background: rgba(255, 255, 255, .04);
  color: var(--text);
  outline: none;
}
input:focus,
select:focus,
textarea:focus,
.selector-option:focus,
.btn:focus,
.chip:focus {
  border-color: rgba(156, 233, 255, .52);
  box-shadow: 0 0 0 4px rgba(115, 169, 255, .12);
}
textarea { resize: vertical; }
.hp-field { position: absolute; left: -9999px; }
.alert {
  margin-bottom: 16px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, .08);
}
.alert-error {
  background: rgba(255, 91, 91, .12);
  color: #ffd7d7;
}
.contact-box {
  margin-top: 20px;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, .08);
  background: rgba(255, 255, 255, .03);
}
.compact-list { margin-top: 12px; }
.compact-list li { margin-bottom: 10px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: 16px;
  padding: .95rem 1.26rem;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
  transition: transform .18s ease, background .18s ease, box-shadow .18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-sm { padding: .76rem 1rem; border-radius: 13px; }
.btn-primary {
  color: #061221;
  background: linear-gradient(135deg, var(--primary-2), var(--primary));
  box-shadow: 0 16px 36px rgba(115, 169, 255, .28);
}
.btn-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, .04);
  border-color: rgba(255, 255, 255, .1);
}
.btn-secondary:hover { background: rgba(255, 255, 255, .08); }
.full { width: 100%; }

.site-footer {
  margin-top: 40px;
  padding: 34px 0 52px;
  border-top: 1px solid rgba(255, 255, 255, .06);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr .95fr;
  gap: 20px;
}
.footer-title,
.footer-brand {
  font-weight: 800;
  margin-bottom: 12px;
}
.site-footer p,
.site-footer a,
.footer-muted {
  display: block;
  color: var(--muted);
  line-height: 1.78;
}
.site-footer a:hover { color: var(--text); }
.prose { padding-top: 24px; }

@media (max-width: 1080px) {
  .hero-grid,
  .split-grid,
  .footer-grid,
  .grid.three,
  .grid.two,
  .selector-recommendation,
  .metric-grid,
  .cta-panel {
    grid-template-columns: 1fr;
  }
  .sidebar-specs { position: static; }
}

@media (max-width: 820px) {
  .top-strip-inner { flex-direction: column; align-items: flex-start; padding: 10px 0; }
  .site-nav {
    position: absolute;
    top: 82px;
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    border-radius: 20px;
    background: rgba(8, 14, 25, .98);
    border: 1px solid rgba(255, 255, 255, .08);
  }
  .site-nav.open { display: flex; }
  .nav-toggle { display: inline-flex; }
  .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .hero,
  .page-hero,
  .section { padding: 28px 0; }
  .glass-panel { padding: 22px; }
  .glass-card { padding: 20px; }
  .container,
  .narrow { width: min(var(--container), calc(100% - 24px)); }
}