:root {
  --ink: #09111f;
  --muted: #526071;
  --line: #d9e3ee;
  --paper: #ffffff;
  --wash: #f4f8fc;
  --blue: #1496e8;
  --blue-dark: #0b5f9d;
  --green: #25b46b;
  --gold: #f4c542;
  --dark: #06101d;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --display: "Archivo Black", Impact, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  line-height: 1.55;
}

body { overflow-x: clip; }

a { color: inherit; }

.brain-top {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.brain-container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.brain-nav {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brain-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-family: var(--display);
  letter-spacing: 0.02em;
}

.brain-logo img {
  width: 76px;
  height: auto;
}

.brain-nav-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.brain-link,
.brain-phone,
.brain-cta {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border: 1px solid var(--line);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  font-weight: 700;
}

.brain-phone,
.brain-cta {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.brain-hero {
  background:
    linear-gradient(rgba(6, 16, 29, 0.94), rgba(6, 16, 29, 0.9)),
    repeating-linear-gradient(90deg, transparent 0, transparent 63px, rgba(255,255,255,.06) 64px),
    repeating-linear-gradient(0deg, transparent 0, transparent 63px, rgba(255,255,255,.06) 64px);
  color: var(--paper);
  padding: 62px 0 58px;
}

.brain-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr);
  gap: 34px;
  align-items: end;
}

.brain-kicker {
  color: #8fd0ff;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.brain-hero h1 {
  font-family: var(--display);
  font-size: clamp(40px, 7vw, 76px);
  line-height: .92;
  letter-spacing: 0;
  margin: 0 0 18px;
  max-width: 780px;
}

.brain-hero p {
  max-width: 760px;
  margin: 0;
  color: rgba(255,255,255,.82);
  font-size: 18px;
}

.brain-proof {
  border: 1px solid rgba(143,208,255,.36);
  background: rgba(255,255,255,.05);
  padding: 18px;
}

.brain-proof-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px dashed rgba(255,255,255,.15);
  font-family: var(--mono);
  font-size: 12px;
}

.brain-proof-row:last-child { border-bottom: 0; }
.brain-proof-row strong { color: #8fd0ff; text-align: right; }

.brain-main {
  padding: 44px 0 64px;
  background: var(--wash);
}

.brain-section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 22px;
}

.brain-section-head h2,
.brain-article h1,
.brain-related h2 {
  font-family: var(--display);
  letter-spacing: 0;
  line-height: 1;
  margin: 0;
}

.brain-section-head h2 { font-size: clamp(28px, 4vw, 44px); }
.brain-section-head p { margin: 0; max-width: 560px; color: var(--muted); }

.brain-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.brain-card {
  min-height: 270px;
  background: var(--paper);
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  padding: 18px;
  text-decoration: none;
}

.brain-card:hover {
  border-color: var(--blue);
  box-shadow: 0 12px 30px rgba(20,150,232,.12);
}

.brain-chip {
  width: fit-content;
  background: #e8f5ff;
  color: var(--blue-dark);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  font-weight: 700;
  padding: 5px 7px;
  text-transform: uppercase;
}

.brain-card h3 {
  font-size: 21px;
  line-height: 1.12;
  margin: 16px 0 10px;
}

.brain-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.brain-card .brain-read {
  margin-top: auto;
  padding-top: 18px;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  font-weight: 700;
}

.brain-bottom-band {
  margin-top: 28px;
  background: var(--dark);
  color: var(--paper);
  padding: 22px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
}

.brain-bottom-band p {
  margin: 4px 0 0;
  color: rgba(255,255,255,.72);
}

.brain-rights-panel {
  margin-top: 18px;
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 18px 22px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
}

.brain-rights-panel strong {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.brain-rights-panel p {
  margin: 6px 0 0;
  color: var(--muted);
}

.brain-rights-panel a {
  color: var(--blue-dark);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .12em;
  text-decoration: none;
  text-transform: uppercase;
}

.brain-article-wrap {
  background: var(--wash);
  padding: 34px 0 64px;
}

.brain-breadcrumbs {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--muted);
  margin-bottom: 22px;
}

.brain-breadcrumbs a { text-decoration: none; }

.brain-article-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 28px;
  align-items: start;
}

.brain-article {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: clamp(22px, 4vw, 42px);
  min-width: 0;
  overflow-wrap: anywhere;
}

.brain-article h1 {
  font-size: clamp(36px, 6vw, 66px);
  margin: 14px 0 18px;
}

.brain-answer {
  border-left: 5px solid var(--blue);
  background: #eef8ff;
  padding: 18px 20px;
  font-size: 19px;
  font-weight: 800;
}

.brain-article h2 {
  font-size: 24px;
  margin: 34px 0 10px;
}

.brain-article p,
.brain-article li {
  color: #243044;
  font-size: 17px;
}

.brain-article ul { padding-left: 22px; }

.brain-source-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.brain-source-list a {
  display: block;
  border: 1px solid var(--line);
  padding: 12px;
  text-decoration: none;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--blue-dark);
  background: #fbfdff;
}

.brain-aside {
  position: sticky;
  top: 18px;
  display: grid;
  gap: 14px;
  min-width: 0;
}

.brain-aside-card {
  background: var(--dark);
  color: var(--paper);
  padding: 18px;
  border: 1px solid rgba(255,255,255,.12);
  min-width: 0;
  overflow-wrap: anywhere;
}

.brain-aside-card h2,
.brain-aside-card h3 {
  margin: 0 0 10px;
  font-family: var(--display);
  letter-spacing: 0;
}

.brain-aside-card p {
  color: rgba(255,255,255,.75);
}

.brain-aside-card .brain-cta {
  width: 100%;
  background: var(--blue);
  border-color: var(--blue);
  color: var(--ink);
}

.brain-mini-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 9px;
}

.brain-mini-list a {
  display: block;
  padding: 10px;
  background: rgba(255,255,255,.06);
  text-decoration: none;
}

.brain-policy-list {
  display: grid;
  gap: 12px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.brain-policy-list li {
  border: 1px solid var(--line);
  background: #fbfdff;
  padding: 14px;
}

.brain-policy-list strong {
  display: block;
  margin-bottom: 4px;
  color: var(--ink);
}

.brain-footer {
  background: var(--ink);
  color: rgba(255,255,255,.78);
  padding: 28px 0;
  font-size: 14px;
}

.brain-footer a { color: var(--paper); }

.brain-rights {
  display: inline-block;
  margin-top: 8px;
  color: rgba(255,255,255,.62);
  font-size: 12px;
}

@media (max-width: 860px) {
  .brain-hero-grid,
  .brain-article-grid,
  .brain-bottom-band,
  .brain-rights-panel {
    grid-template-columns: 1fr;
  }

  .brain-grid { grid-template-columns: 1fr; }
  .brain-nav { align-items: flex-start; flex-direction: column; padding: 14px 0; }
  .brain-nav-actions { justify-content: flex-start; }
  .brain-aside { position: static; }
}

@media (max-width: 520px) {
  .brain-container { width: min(100% - 28px, 1120px); }
  .brain-link, .brain-phone, .brain-cta { width: 100%; }
  .brain-nav-actions { width: 100%; }
}