/* Kernel architecture uses the same neutral editorial surfaces as the platform reference. */
.kernel-section { padding-bottom: 64px; scroll-margin-top: 140px; }
.kernel-plate { display: grid; grid-template-columns: .85fr 1.4fr; gap: 6%; padding: 36px; background: var(--paper-2); color: var(--ink); }
.kernel-intro { display: flex; flex-direction: column; align-items: flex-start; }
.kernel-kicker, .kernel-layer-label, .kernel-index { font-size: 12px; line-height: 1.5; letter-spacing: .02em; }
.kernel-kicker { color: var(--mid); margin: 0 0 34px; }
.kernel-intro h2 { font-size: clamp(34px, 3.25vw, 48px); font-weight: 800; letter-spacing: -.055em; line-height: 1.1; margin: 0 0 24px; }
.kernel-intro > p:not(.kernel-kicker):not(.kernel-scope) { font-size: 16px; line-height: 1.65; color: var(--mid); margin: 0 0 26px; max-width: 34ch; }
.kernel-link { display: inline-flex; align-items: center; gap: 18px; font-size: 14px; line-height: 1.5; color: var(--ink); }
.kernel-link:hover { text-decoration: underline; text-underline-offset: 5px; }
.kernel-link span { font-size: 20px; }
.kernel-intro .kernel-scope { margin: auto 0 0; padding-top: 36px; font-size: 11px; line-height: 1.7; color: var(--mid); }
.kernel-map { min-width: 0; }
.kernel-layer { display: flex; align-items: center; justify-content: space-between; gap: 20px; border: 1px solid var(--line-2); padding: 18px 20px; }
.kernel-layer-label { color: var(--mid); }
.kernel-layer p { font-size: 12px; line-height: 1.6; margin: 0; text-align: right; }
.kernel-layer p > span { padding: 0 6px; color: var(--mid); }
.kernel-operators { margin: 12px 0; background: var(--paper-3); }
.kernel-core { background: var(--paper); color: var(--ink); border: 1px solid var(--line-2); }
.kernel-core-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; padding: 23px 22px; }
.kernel-core-heading h3 { font-size: 27px; font-weight: 800; letter-spacing: -.055em; line-height: 1.2; margin: 0; }
.kernel-core-heading > span { font-size: 11px; line-height: 1.4; color: var(--mid); text-align: right; }
.kernel-services { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 0 12px; border: 1px solid var(--line); }
.kernel-services a { position: relative; padding: 18px 13px 35px; min-width: 0; color: inherit; }
.kernel-services a + a { border-left: 1px solid var(--line); }
.kernel-services strong { display: block; font-size: 16px; font-weight: 500; letter-spacing: -.02em; line-height: 1.25; }
.kernel-services a > span:not(.kernel-arrow) { display: block; font-size: 11px; line-height: 1.5; color: var(--mid); margin-top: 9px; }
.kernel-arrow { position: absolute; bottom: 10px; right: 12px; font-size: 18px; line-height: 1; }
.kernel-services a:hover { background: var(--paper-2); }
.kernel-plate a:focus-visible { outline: 2px solid currentColor; outline-offset: 4px; z-index: 1; }
.kernel-invariants { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; padding: 20px 13px; font-size: 10px; line-height: 1.5; text-align: center; }
.kernel-invariants span + span { border-left: 1px solid var(--line); }
.kernel-foundations { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 12px; }
.kernel-foundations > a { position: relative; min-width: 0; border: 1px solid var(--line-2); padding: 18px 16px 31px; color: var(--ink); }
.kernel-foundations > a:hover { background: var(--paper-3); }
.kernel-foundations .kernel-layer-label { display: block; font-size: 10px; margin-bottom: 14px; }
.kernel-foundations strong { font-size: 15px; line-height: 1.4; font-weight: 400; display: block; }
.kernel-foundations p { color: var(--mid); font-size: 11px; line-height: 1.6; margin: 8px 0 0; }
.kernel-map-caption { font-size: 11px; color: var(--mid); line-height: 1.5; margin: 17px 0 0; text-align: right; }
.kernel-primitives { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 42px; padding-top: 46px; }
.kernel-primitives article { border-top: 1px solid var(--line-2); padding-top: 22px; }
.kernel-index { display: block; color: var(--mid); margin-bottom: 19px; }
.kernel-primitives h3 { font-size: 24px; font-weight: 800; line-height: 1.25; letter-spacing: -.055em; max-width: 21ch; margin: 0 0 16px; }
.kernel-primitives p { color: var(--mid); font-size: 15px; line-height: 1.7; margin-bottom: 20px; max-width: 43ch; }
.kernel-primitives .ed-link { font-size: 14px; }
.kernel-applications-intro { padding-top: 12px; }
.kernel-applications-intro .business-section-head { margin-bottom: 20px; }
.kernel-platform-overview { padding-top: 64px; }
@media (max-width: 1100px) {
  .kernel-plate { grid-template-columns: .8fr 1.4fr; gap: 30px; padding: 34px; }
  .kernel-layer { flex-direction: column; align-items: flex-start; gap: 7px; padding: 14px 16px; }
  .kernel-layer p { text-align: left; }
  .kernel-primitives { gap: 28px; }
}
@media (max-width: 800px) {
  .kernel-plate { grid-template-columns: 1fr; padding: 28px; gap: 32px; }
  .kernel-intro h2 { max-width: 16ch; font-size: 40px; }
  .kernel-intro h2 br { display: none; }
  .kernel-kicker { margin-bottom: 22px; }
  .kernel-intro > p:not(.kernel-kicker):not(.kernel-scope) { max-width: 46ch; }
  .kernel-intro .kernel-scope { padding-top: 23px; }
  .kernel-layer { flex-direction: row; align-items: center; gap: 20px; }
  .kernel-layer p { text-align: right; }
  .kernel-primitives { grid-template-columns: 1fr; gap: 28px; }
  .kernel-primitives h3, .kernel-primitives p { max-width: none; }
  .kernel-primitives article { display: grid; grid-template-columns: 1fr 1.15fr; column-gap: 25px; }
  .kernel-index { grid-column: 1; }
  .kernel-primitives h3 { grid-column: 1; }
  .kernel-primitives p { grid-column: 2; grid-row: 1 / 3; }
  .kernel-primitives .ed-link { grid-column: 2; }
}
@media (max-width: 480px) {
  .kernel-section { padding-bottom: 48px; }
  .kernel-plate { padding: 24px 18px; }
  .kernel-intro h2 { font-size: 36px; }
  .kernel-layer { flex-direction: column; align-items: flex-start; gap: 8px; }
  .kernel-layer p { text-align: left; font-size: 11px; }
  .kernel-layer p > span { padding: 0 3px; }
  .kernel-operators { margin: 10px; }
  .kernel-core-heading { display: block; padding: 22px 15px; }
  .kernel-core-heading h3 { font-size: 25px; }
  .kernel-core-heading > span { display: block; margin-top: 8px; font-size: 10px; text-align: left; }
  .kernel-services { grid-template-columns: 1fr; }
  .kernel-services a { padding: 16px 35px 16px 13px; }
  .kernel-services a + a { border-left: 0; border-top: 1px solid var(--line); }
  .kernel-services .kernel-arrow { top: 20px; bottom: auto; }
  .kernel-services a > span:not(.kernel-arrow) { margin-top: 5px; }
  .kernel-invariants { grid-template-columns: 1fr 1fr; row-gap: 14px; }
  .kernel-invariants span:nth-child(3) { border-left: 0; }
  .kernel-foundations { gap: 8px; }
  .kernel-foundations > a { padding: 15px 10px 32px; }
  .kernel-foundations strong { font-size: 14px; }
  .kernel-foundations p { font-size: 10px; }
  .kernel-map-caption { font-size: 10px; text-align: left; }
  .kernel-primitives { padding-top: 32px; }
  .kernel-primitives article { display: block; }
  .kernel-primitives h3 { font-size: 25px; }
  .kernel-platform-overview { padding-top: 32px; }
}