:root {
  color-scheme: light;
  --birch: #F7F9FA;
  --ice-panel: #EDF2F6;
  --card-white: #FFFFFF;
  --baltic: #121E26;
  --baltic-muted: #4A5B68;
  --fjord: #1D5B79;
  --fjord-dark: #14435A;
  --fjord-tint: rgba(29, 91, 121, 0.08);
  --amber-signal: #FF9F1C;
  --amber-tint: rgba(255, 159, 28, 0.18);
  --line-grid: #121E26;
  --line-soft: rgba(18, 30, 38, 0.16);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Cascadia Mono', 'Consolas', 'Courier New', monospace;
  background-color: var(--birch);
  color: var(--baltic);
  font-family: var(--font-sans);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body {
  margin: 0;
  background-color: var(--birch);
  color: var(--baltic);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--fjord);
  outline-offset: 3px;
}

::selection {
  background: var(--fjord);
  color: #FFFFFF;
}

h1, h2, h3, h4, p {
  margin: 0;
}

.nordic-frame {
  width: min(1420px, calc(100% - 48px));
  margin-inline: auto;
  border-inline: 1.5px solid var(--line-grid);
  background: var(--birch);
}

/* Header */
.nordic-header {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: stretch;
  border-bottom: 1.5px solid var(--line-grid);
  background: var(--card-white);
}

.brand-cell {
  padding: 20px 28px;
  display: flex;
  align-items: center;
  gap: 14px;
  border-inline-end: 1.5px solid var(--line-grid);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.brand-dot {
  width: 10px;
  height: 10px;
  background: var(--fjord);
  display: inline-block;
}

.nav-cell {
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
}

.nav-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--baltic);
  padding-block: 4px;
  border-bottom: 2px solid transparent;
}

.nav-link:hover {
  border-bottom-color: var(--fjord);
  color: var(--fjord);
}

/* Language Menu */
.lang-menu {
  position: relative;
  font-family: var(--font-mono);
}

.lang-btn {
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border: 1.5px solid var(--line-grid);
  background: var(--birch);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  user-select: none;
}

.lang-btn::-webkit-details-marker {
  display: none;
}

.lang-menu[open] .lang-btn {
  background: var(--baltic);
  color: #FFFFFF;
}

.lang-dropdown {
  position: absolute;
  inset-inline-end: 0;
  top: calc(100% + 6px);
  z-index: 40;
  width: 236px;
  max-height: 320px;
  overflow-y: auto;
  background: var(--card-white);
  border: 1.5px solid var(--line-grid);
  box-shadow: 6px 6px 0 var(--baltic);
  padding: 6px;
  display: grid;
  gap: 2px;
}

.lang-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px;
  font-size: 12px;
  color: var(--baltic);
}

.lang-option:hover {
  background: var(--fjord-tint);
}

.lang-option.is-active {
  background: var(--fjord);
  color: #FFFFFF;
  font-weight: 700;
}

/* Buttons */
.btn-fjord {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 24px;
  background: var(--fjord);
  color: #FFFFFF;
  border: 1.5px solid var(--line-grid);
  font-size: 14px;
  font-weight: 700;
  transition: background 0.14s ease, transform 0.12s ease;
}

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

.btn-fjord-sm {
  padding: 9px 16px;
  font-size: 13px;
}

.btn-slate-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 20px;
  border: 1.5px solid var(--line-grid);
  background: var(--card-white);
  color: var(--baltic);
  font-size: 14px;
  font-weight: 700;
}

.btn-slate-outline:hover {
  background: var(--ice-panel);
}

[dir='rtl'] .arrow-svg {
  transform: scaleX(-1);
}

/* Hero Grid */
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.12fr;
  border-bottom: 1.5px solid var(--line-grid);
}

.hero-left {
  padding: 44px 36px;
  border-inline-end: 1.5px solid var(--line-grid);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 28px;
}

.nordic-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 5px 11px;
  border: 1px solid var(--line-grid);
  background: var(--ice-panel);
}

.hero-h1 {
  margin-top: 18px;
  font-size: clamp(42px, 5vw, 68px);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.04em;
  color: var(--baltic);
}

.hero-h1-sub {
  display: block;
  margin-top: 10px;
  font-size: clamp(24px, 2.7vw, 36px);
  font-weight: 800;
  color: var(--fjord);
  letter-spacing: -0.025em;
}

.hero-lead {
  margin-top: 18px;
  font-size: 16.5px;
  line-height: 1.62;
  color: var(--baltic-muted);
  max-width: 58ch;
}

/* Giant 0 RUB Nordic Callout + Pro Rates */
.zero-rub-showcase {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  border: 1.5px solid var(--line-grid);
  background: var(--card-white);
}

.zero-rub-primary {
  padding: 20px 22px;
  border-inline-end: 1.5px solid var(--line-grid);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 8px;
}

.zero-num-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
}

.zero-giant {
  font-size: clamp(34px, 4vw, 54px);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: var(--baltic);
}

.amber-pill {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--amber-signal);
  color: var(--baltic);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1.5px solid var(--baltic);
}

.zero-caption {
  font-size: 13px;
  font-weight: 600;
  color: var(--baltic-muted);
}

.pro-rates-stack {
  display: grid;
  grid-template-rows: 1fr 1fr;
}

.pro-rate-cell {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line-grid);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.pro-rate-cell:last-child {
  border-bottom: none;
}

.pro-rate-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--baltic-muted);
}

.pro-rate-val {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 800;
  color: var(--fjord);
  margin-top: 2px;
}

.hero-cta-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* Right Column: Glacial Fjord-Blue Multimodal Workspace Inspector */
.hero-right {
  background: var(--fjord);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.inspector-window {
  background: var(--card-white);
  border: 2px solid var(--baltic);
  box-shadow: 8px 8px 0 var(--baltic);
  overflow: hidden;
}

.inspector-topbar {
  padding: 10px 16px;
  background: var(--ice-panel);
  border-bottom: 1.5px solid var(--line-grid);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.inspector-status {
  color: var(--fjord);
}

.inspector-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
}

.insp-cell {
  padding: 16px;
  border-inline-end: 1px solid var(--line-grid);
  border-bottom: 1px solid var(--line-grid);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
}

.insp-cell:nth-child(2n) {
  border-inline-end: none;
}

.insp-cell:nth-child(3),
.insp-cell:nth-child(4) {
  border-bottom: none;
}

.insp-head {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--baltic-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Context Window 1M Bar Visualization */
.ctx-big-num {
  font-size: 26px;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--baltic);
}

.ctx-bars {
  display: grid;
  grid-template-columns: repeat(16, 1fr);
  gap: 3px;
  height: 44px;
  padding: 6px;
  background: var(--ice-panel);
  border: 1px solid var(--line-soft);
}

.ctx-bar {
  background: var(--fjord);
  display: block;
}

.ctx-bar.is-muted {
  background: rgba(18, 30, 38, 0.18);
}

.ctx-meta-list {
  display: grid;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--baltic);
}

.ctx-meta-row {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed var(--line-soft);
  padding-bottom: 2px;
}

/* Code Execution Console Panel */
.code-console {
  background: var(--baltic);
  color: #E2ECF2;
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.48;
  border: 1px solid var(--baltic);
}

.code-kw {
  color: var(--amber-signal);
}

.code-fn {
  color: #7CC6EE;
}

/* PDF Document Inspector Panel */
.pdf-sheet {
  background: var(--ice-panel);
  border: 1px solid var(--line-grid);
  padding: 12px;
  font-size: 12px;
  display: grid;
  gap: 6px;
}

.pdf-badge-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
}

/* Section Structural Dividers */
.section-block {
  border-bottom: 1.5px solid var(--line-grid);
}

.section-header-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 36px 28px 28px;
  gap: 28px;
  align-items: end;
  border-bottom: 1.5px solid var(--line-grid);
  background: var(--card-white);
}

.section-index {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fjord);
  display: block;
  margin-bottom: 8px;
}

.section-h2 {
  font-size: clamp(28px, 3.4vw, 44px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.035em;
}

.section-sub {
  font-size: 16px;
  color: var(--baltic-muted);
  line-height: 1.6;
}

/* Comparison Matrix Table */
.matrix-wrap {
  padding: 28px;
  background: var(--birch);
  overflow-x: auto;
}

.nordic-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-white);
  border: 1.5px solid var(--line-grid);
  font-size: 14px;
}

.nordic-table th,
.nordic-table td {
  padding: 14px 16px;
  border: 1px solid var(--line-grid);
  text-align: start;
}

.nordic-table thead th {
  background: var(--ice-panel);
  font-weight: 800;
  font-size: 14px;
}

.nordic-table thead th.is-fjord {
  background: var(--fjord);
  color: #FFFFFF;
}

.check-mark {
  font-weight: 900;
  color: var(--fjord);
}

/* 3 Modular Task Cards with Fjord Top Bar */
.modules-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  padding: 28px;
  gap: 22px;
  background: var(--ice-panel);
}

.module-card {
  background: var(--card-white);
  border: 1.5px solid var(--line-grid);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.module-topbar {
  height: 14px;
  background: var(--fjord);
  border-bottom: 1.5px solid var(--line-grid);
}

.module-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 18px;
  flex: 1;
}

.module-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  color: var(--fjord);
  text-transform: uppercase;
}

.module-title {
  font-size: 21px;
  font-weight: 800;
  line-height: 1.2;
  margin-top: 6px;
}

.module-text {
  font-size: 15px;
  color: var(--baltic-muted);
  line-height: 1.6;
  margin-top: 10px;
}

.module-prompt {
  padding: 11px 14px;
  background: var(--birch);
  border-left: 3px solid var(--fjord);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--baltic);
}

/* Pricing 3-Column Strip */
.pricing-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.pricing-col {
  padding: 28px;
  border-inline-end: 1.5px solid var(--line-grid);
  background: var(--card-white);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
}

.pricing-col:last-child {
  border-inline-end: none;
}

.pricing-col.is-highlight {
  background: var(--fjord-tint);
}

.pricing-tier-name {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fjord);
}

.pricing-big {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 900;
  color: var(--baltic);
  margin-top: 6px;
}

.pricing-desc {
  font-size: 14.5px;
  color: var(--baltic-muted);
  line-height: 1.58;
}

/* FAQ Accordion */
.faq-list {
  background: var(--card-white);
}

.faq-row {
  border-bottom: 1px solid var(--line-grid);
  padding: 22px 28px;
}

.faq-row:last-child {
  border-bottom: none;
}

.faq-summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 17px;
  font-weight: 800;
  color: var(--baltic);
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-chevron {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 800;
  color: var(--fjord);
}

.faq-answer {
  margin-top: 12px;
  font-size: 15px;
  color: var(--baltic-muted);
  line-height: 1.64;
  max-width: 82ch;
}

/* Footer */
.nordic-footer {
  padding: 28px;
  background: var(--baltic);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-link {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 6px 12px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  color: #FFFFFF;
}

.footer-link:hover {
  border-color: var(--amber-signal);
  color: var(--amber-signal);
}

.footer-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.72);
}

@media (max-width: 1080px) {
  .nordic-header,
  .hero-grid,
  .section-header-grid,
  .modules-grid,
  .pricing-strip {
    grid-template-columns: 1fr;
  }
  .brand-cell,
  .hero-left,
  .pricing-col {
    border-inline-end: none;
    border-bottom: 1.5px solid var(--line-grid);
  }
}

@media (max-width: 680px) {
  .nordic-frame {
    width: calc(100% - 20px);
  }
  .zero-rub-showcase,
  .inspector-grid {
    grid-template-columns: 1fr;
  }
  .zero-rub-primary {
    border-inline-end: none;
    border-bottom: 1.5px solid var(--line-grid);
  }
}