:root {
  --ink-900: #070a12;
  --ink-850: #0b0f1a;
  --ink-800: #0e1422;
  --ink-700: #141b2d;
  --ink-600: #1b2438;
  --ink-500: #243149;
  --line: #243149;
  --line-soft: #1a2235;
  --text: #e7ecf5;
  --text-dim: #aab4c8;
  --text-faint: #6c7791;
  --coral: #ff7a59;
  --coral-bright: #ff8f6b;
  --coral-soft: #ffb27a;
  --teal: #46d5c5;
  --teal-dim: #2fa597;
  --amber: #ffce57;
  --violet: #9d7bff;
  --radius: 14px;
  --radius-sm: 9px;
  --radius-lg: 24px;
  --maxw: 1140px;
  --shadow: 0 18px 50px -22px rgba(0, 0, 0, .85);
  --shadow-soft: 0 14px 40px -24px rgba(255, 122, 89, .58);
  --font-display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  color-scheme: dark;
}

body {
  margin: 0;
  background: var(--ink-850);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  content: "";
  background:
    radial-gradient(900px 540px at 78% -8%, rgba(255, 122, 89, .13), transparent 60%),
    radial-gradient(760px 520px at 8% 12%, rgba(70, 213, 197, .08), transparent 58%),
    radial-gradient(1000px 700px at 50% 116%, rgba(157, 123, 255, .07), transparent 60%);
}

body::after {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  opacity: .28;
  background-image:
    linear-gradient(rgba(255, 255, 255, .022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .022) 1px, transparent 1px);
  background-size: 48px 48px;
}

a {
  color: var(--coral-soft);
  text-decoration: none;
}

a:hover {
  color: var(--coral-bright);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

button,
input,
select {
  font: inherit;
}

:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: .75rem;
  z-index: 50;
  transform: translateY(-160%);
  padding: .7rem 1rem;
  border-radius: 999px;
  background: var(--teal);
  color: var(--ink-900);
  font-weight: 800;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  background: rgba(11, 15, 26, .82);
  backdrop-filter: blur(18px);
}

.nav-shell,
.shell {
  width: min(var(--maxw), calc(100% - 40px));
  margin-inline: auto;
}

.nav-shell {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 800;
}

.brand img {
  border-radius: var(--radius-sm);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: .25rem;
}

.nav-links a {
  padding: .58rem .82rem;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--text-dim);
  font-size: .92rem;
  font-weight: 700;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  border-color: rgba(255, 178, 122, .28);
  background: rgba(255, 122, 89, .1);
  color: var(--text);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--ink-700);
  color: var(--text);
  padding: .55rem .85rem;
  font-weight: 800;
}

.section-pad {
  padding-block: clamp(4.5rem, 8vw, 7.5rem);
}

.section-tight {
  padding-block: 2rem;
}

.hero {
  padding-top: clamp(4.5rem, 8vw, 7rem);
}

.hero-grid,
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, .82fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 4.8rem);
}

.hero-copy {
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--font-display);
  line-height: 1.05;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  font-size: clamp(2.75rem, 6vw, 5.8rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
}

h3 {
  font-size: clamp(1.12rem, 2vw, 1.45rem);
}

p {
  margin: 0;
  color: var(--text-dim);
}

.hero-text {
  max-width: 620px;
  margin-top: 1.2rem;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
}

.hero-actions,
.code-card-head,
.footer-grid,
.calculator-fields,
.tool-grid {
  display: flex;
  gap: 1rem;
}

.hero-actions {
  flex-wrap: wrap;
  margin-top: 1.8rem;
}

.button,
.copy-button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  padding: .78rem 1.1rem;
  cursor: pointer;
  font-weight: 900;
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
}

.button:active,
.copy-button:active {
  transform: translateY(1px);
}

.button-primary {
  background: linear-gradient(135deg, var(--coral), var(--coral-soft));
  color: var(--ink-900);
  box-shadow: var(--shadow-soft);
}

.button-secondary,
.copy-button {
  border: 1px solid rgba(255, 178, 122, .36);
  background: rgba(255, 122, 89, .08);
  color: var(--text);
}

.hero-card,
.price-card,
.tool-panel,
.result-panel,
.code-card,
.comparison-grid article,
.card-grid article,
.stacked-list article,
.calculator,
.fact-grid article {
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--radius);
  background: rgba(14, 20, 34, .76);
  box-shadow: var(--shadow);
}

.hero-card {
  overflow: hidden;
  margin: 0;
}

.hero-card figcaption {
  padding: .9rem 1rem;
  color: var(--text-dim);
  font-size: .9rem;
}

.panel-band {
  border-block: 1px solid rgba(255, 255, 255, .06);
  background: rgba(7, 10, 18, .28);
}

.quick-facts h2 {
  margin-bottom: 1.2rem;
}

.fact-grid,
.pricing-grid,
.card-grid,
.comparison-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.fact-grid article,
.price-card,
.card-grid article,
.comparison-grid article,
.stacked-list article,
.tool-panel,
.result-panel,
.calculator {
  padding: 1.2rem;
}

.fact-grid strong,
.price-card h3,
.card-grid h3,
.comparison-grid h3,
.stacked-list h3 {
  display: block;
  margin-bottom: .45rem;
  color: var(--text);
}

.fact-grid span {
  color: var(--text-dim);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 1.6rem;
}

.section-heading p,
.split > div > p {
  margin-top: .85rem;
}

.stacked-list {
  display: grid;
  gap: 1rem;
}

.tool-grid {
  align-items: stretch;
}

.tool-panel {
  flex: 1 1 360px;
}

.tool-panel label,
.calculator label {
  display: grid;
  gap: .45rem;
  color: var(--text);
  font-weight: 800;
}

select,
input[type="number"] {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--ink-900);
  color: var(--text);
  padding: .72rem .8rem;
}

.tool-panel .button {
  margin-top: 1rem;
}

.result-panel {
  flex: 1.2 1 420px;
  min-height: 160px;
  color: var(--text);
  font-size: 1.08rem;
}

.pricing-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.price-card.featured {
  border-color: rgba(255, 178, 122, .48);
  background: rgba(255, 122, 89, .1);
}

.price {
  margin-block: .7rem;
  color: var(--coral-soft);
  font-family: var(--font-display);
  font-size: 2.15rem;
  font-weight: 900;
}

.calculator {
  margin-top: 1rem;
}

.calculator-fields {
  flex-wrap: wrap;
}

.calculator-fields label {
  flex: 1 1 210px;
}

.checkline {
  display: flex !important;
  align-items: center;
  grid-template-columns: auto 1fr;
  gap: .7rem !important;
}

.calculator-result {
  margin-top: 1rem;
  color: var(--text);
  font-weight: 800;
}

.table-wrap,
.comparison-table-wrap {
  display: block;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--radius);
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
}

th,
td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

th {
  background: linear-gradient(135deg, rgba(255, 122, 89, .18), rgba(70, 213, 197, .12));
  color: var(--text);
  font-family: var(--font-mono);
  font-size: .85rem;
}

td {
  color: var(--text-dim);
}

.steps {
  margin: 1.2rem 0 0;
  padding-left: 1.2rem;
  color: var(--text-dim);
}

.steps li + li {
  margin-top: .55rem;
}

.code-card {
  max-width: 100%;
  min-width: 0;
  overflow: hidden;
}

.code-card-head {
  align-items: center;
  justify-content: space-between;
  padding: .9rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: .88rem;
}

pre {
  max-width: 100%;
  min-width: 0;
  margin: 0;
  overflow-x: auto;
  padding: 1rem;
  background: var(--ink-900);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: .9rem;
  line-height: 1.6;
}

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

.risk-list {
  display: grid;
  gap: .9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.risk-list li {
  border-left: 4px solid var(--coral);
  border-radius: var(--radius-sm);
  background: rgba(255, 122, 89, .08);
  color: var(--text);
  padding: .85rem 1rem;
}

.faq-shell {
  max-width: 900px;
}

details {
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--radius);
  background: rgba(14, 20, 34, .72);
  padding: 1rem 1.1rem;
}

details + details {
  margin-top: .8rem;
}

summary {
  cursor: pointer;
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 900;
}

details p {
  margin-top: .7rem;
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding-block: 2.2rem;
}

.footer-grid {
  align-items: start;
  justify-content: space-between;
}

.footer-grid > div:last-child {
  display: grid;
  gap: .45rem;
  text-align: right;
}

/* ---- flow diagram ---- */
.flow-diagram {
  display: flex;
  align-items: stretch;
  gap: 0;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.flow-step {
  flex: 1;
  min-width: 150px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  border-radius: var(--radius-sm);
  padding: 1.1rem 1rem;
  text-align: center;
}

.flow-icon {
  display: block;
  width: 38px;
  height: 38px;
  margin: 0 auto 0.5rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--coral), var(--coral-soft));
  color: var(--ink-900);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.1rem;
  line-height: 38px;
  text-align: center;
}

.flow-step h3 {
  font-size: 0.96rem;
  margin-bottom: 0.3rem;
}

.flow-step p {
  font-size: 0.82rem;
}

.flow-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--coral-soft);
  font-size: 1.5rem;
  padding: 0 8px;
  flex: none;
}

/* ---- vs columns ---- */
.vs-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.vs-col {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  background: rgba(14, 20, 34, 0.76);
}

.vs-fugu { border-top: 3px solid var(--coral); }
.vs-ultra { border-top: 3px solid var(--teal); }

.vs-col h3 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--ink-700);
  color: var(--text-faint);
  font-weight: 500;
}

/* ---- checklist ---- */
.checklist {
  list-style: none;
  padding: 0;
  margin: 0.8rem 0 0;
}

.checklist li {
  padding: 0.35rem 0;
  color: var(--text-dim);
  font-size: 0.92rem;
}

.checklist li::before {
  content: ">";
  color: var(--coral-soft);
  font-weight: 900;
  margin-right: 0.5rem;
}

/* ---- callout boxes ---- */
.callout {
  border-left: 3px solid var(--coral);
  background: rgba(255, 122, 89, 0.06);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1rem 1.2rem;
}

.callout-coral { border-left-color: var(--coral); }
.callout-teal { border-left-color: var(--teal); background: rgba(70, 213, 197, 0.06); }
.callout-amber { border-left-color: var(--amber); background: rgba(255, 206, 87, 0.06); }

.callout p {
  font-size: 0.95rem;
  color: var(--text-dim);
}

.callout strong {
  color: var(--text);
}

/* ---- timeline steps ---- */
.timeline-steps {
  display: grid;
  gap: 0.9rem;
  margin-top: 0.5rem;
}

.tl-step {
  display: flex;
  gap: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(14, 20, 34, 0.72);
  padding: 1.1rem 1.2rem;
  align-items: flex-start;
}

.tl-num {
  flex: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--coral), var(--coral-soft));
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-weight: 900;
  font-size: 0.82rem;
}

.tl-step h3 {
  margin: 0 0 0.3rem;
  font-size: 1rem;
}

.tl-step p {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin: 0;
}

/* ---- glossary ---- */
.glossary-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.8rem;
  margin-top: 0.5rem;
}

.glossary-item {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  padding: 1rem 1.1rem;
  background: rgba(14, 20, 34, 0.7);
}

.glossary-item dt {
  font-family: var(--font-mono);
  color: var(--coral-soft);
  font-size: 0.86rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.glossary-item dd {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
}

/* ---- toc nav ---- */
.toc-nav {
  columns: 2;
  column-gap: 1.5rem;
}

.toc-nav a {
  display: block;
  padding: 0.45rem 0;
  color: var(--text-dim);
  font-size: 0.92rem;
  border-bottom: 1px solid var(--line-soft);
}

.toc-nav a:hover {
  color: var(--coral-soft);
  padding-left: 6px;
}

/* ---- tag cloud ---- */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.tag-cloud span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  border: 1px solid var(--line);
  background: var(--ink-800);
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  transition: 0.15s;
}

.tag-cloud span:hover {
  border-color: var(--coral);
  color: var(--coral-soft);
}

/* ---- takeaway numbers ---- */
.takeaway-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: rgba(255, 122, 89, 0.18);
  line-height: 1;
  margin-bottom: 0.3rem;
}

/* ---- footer grid improvements ---- */
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}

.footer-grid strong {
  display: block;
  margin-bottom: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.footer-grid a {
  display: block;
  color: var(--text-dim);
  font-size: 0.88rem;
  padding: 0.3rem 0;
}

.footer-grid a:hover {
  color: var(--coral-soft);
}

.policy-shell {
  max-width: 860px;
}

.policy-shell h1 {
  margin-bottom: 1.2rem;
}

.policy-shell h2 {
  margin-top: 2rem;
  font-size: clamp(1.45rem, 3vw, 2.2rem);
}

.policy-shell p + p,
.policy-shell h2 + p {
  margin-top: .85rem;
}

@media (prefers-reduced-motion: no-preference) {
  .hero-copy,
  .hero-card,
  .fact-grid article,
  .price-card,
  .card-grid article,
  .comparison-grid article {
    animation: rise-in .55s ease both;
  }

  .hero-card {
    animation-delay: .08s;
  }

  @keyframes rise-in {
    from {
      opacity: 0;
      transform: translateY(18px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

@media (max-width: 920px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    left: 20px;
    right: 20px;
    top: 74px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: var(--radius);
    background: var(--ink-800);
    padding: .7rem;
  }

  .nav-links.is-open {
    display: flex;
  }

  .hero-grid,
  .split,
  .tool-grid {
    grid-template-columns: 1fr;
    display: grid;
  }

  .fact-grid,
  .pricing-grid,
  .card-grid,
  .comparison-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .footer-grid > div:last-child {
    text-align: left;
  }

  .flow-diagram { flex-direction: column; }
  .flow-arrow { transform: rotate(90deg); padding: 4px 0; }
  .vs-cols { grid-template-columns: 1fr; }
  .glossary-grid { grid-template-columns: 1fr; }
  .toc-nav { columns: 1; }
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .nav-shell,
  .shell {
    width: min(100% - 28px, var(--maxw));
  }

  .section-pad {
    padding-block: 3.6rem;
  }

  h1 {
    font-size: clamp(2.25rem, 14vw, 3.35rem);
  }

  .hero-actions,
  .calculator-fields {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .fact-grid,
  .pricing-grid,
  .card-grid,
  .comparison-grid,
  .glossary-grid {
    grid-template-columns: 1fr;
  }

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

  .toc-nav { columns: 1; }
}