.deepdoc-main {
  overflow-x: clip;
}

.deepdoc-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
  background:
    linear-gradient(to bottom, color-mix(in srgb, var(--color-panel) 82%, transparent), transparent),
    var(--color-bg);
}

.deepdoc-hero::before {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(color-mix(in srgb, var(--color-accent) 32%, transparent) 1px, transparent 1px),
    linear-gradient(color-mix(in srgb, var(--color-border) 22%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--color-border) 22%, transparent) 1px, transparent 1px);
  background-position: center;
  background-size: 24px 24px, 72px 72px, 72px 72px;
  content: "";
  mask-image: linear-gradient(to right, var(--color-shadow), transparent);
  opacity: 0.28;
  pointer-events: none;
}

.deepdoc-hero::after {
  position: absolute;
  top: 8%;
  right: -8%;
  width: min(58vw, 760px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--color-accent) 13%, transparent), transparent 68%);
  content: "";
  pointer-events: none;
}

.deepdoc-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: min(760px, calc(100svh - var(--header-height)));
  grid-template-columns: minmax(0, 1.02fr) minmax(420px, 0.98fr);
  align-items: center;
  gap: clamp(46px, 7vw, 96px);
  padding-top: clamp(72px, 9vw, 126px);
  padding-bottom: clamp(72px, 9vw, 126px);
}

.deepdoc-hero-copy {
  min-width: 0;
}

.deepdoc-hero-copy h1 {
  max-width: 690px;
  margin-top: 19px;
}

.deepdoc-hero-copy .lead {
  max-width: 660px;
  margin-top: 24px;
}

.deepdoc-intro {
  max-width: 660px;
  margin-top: 24px;
  padding-left: 18px;
  border-left: 2px solid var(--color-accent);
  color: var(--color-text-muted);
}

.deepdoc-intro a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.deepdoc-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 28px;
}

.protocol-plate {
  position: relative;
  min-width: 0;
  border: 1px solid var(--color-border);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
}

.protocol-plate::before {
  position: absolute;
  inset: -1px;
  border: 1px solid color-mix(in srgb, var(--color-accent) 18%, transparent);
  content: "";
  pointer-events: none;
  transform: translate(12px, 12px);
}

.plate-header,
.plate-footer {
  display: flex;
  min-height: 40px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-inline: 15px;
  color: var(--color-annotation);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.plate-header {
  border-bottom: 1px solid var(--color-border);
}

.plate-footer {
  border-top: 1px solid var(--color-border);
}

.plate-core {
  position: relative;
  min-height: 390px;
  overflow: hidden;
  background:
    linear-gradient(color-mix(in srgb, var(--color-border) 22%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--color-border) 22%, transparent) 1px, transparent 1px),
    var(--color-panel-raised);
  background-size: 32px 32px;
}

.plate-core svg {
  position: absolute;
  inset: 24px;
  width: calc(100% - 48px);
  height: calc(100% - 48px);
}

.plate-grid-line {
  fill: none;
  stroke: var(--color-border);
  stroke-width: 1;
}

.plate-path-glow {
  fill: none;
  stroke: var(--color-accent);
  stroke-linecap: round;
  stroke-width: 14;
  opacity: 0.12;
}

.plate-path {
  fill: none;
  stroke: var(--color-accent);
  stroke-linecap: round;
  stroke-width: 2;
}

.plate-point {
  fill: var(--color-accent);
}

.plate-node {
  position: absolute;
  z-index: 2;
  display: inline-flex;
  min-width: 50px;
  min-height: 26px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-accent);
  background: var(--color-panel);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.plate-node-app {
  bottom: 18%;
  left: 5%;
}

.plate-node-protocol {
  top: 15%;
  left: 33%;
}

.plate-node-route {
  right: 24%;
  bottom: 17%;
}

.plate-node-exit {
  top: 22%;
  right: 4%;
}

.deepdoc-shell {
  padding-top: clamp(52px, 7vw, 90px);
  padding-bottom: var(--section-space);
}

.deepdoc-shell > .toc-tabs {
  margin-bottom: clamp(58px, 8vw, 94px);
}

.deepdoc-article {
  width: min(100%, 940px);
  margin-inline: auto;
  font-size: 16px;
  line-height: 1.92;
}

.deepdoc-section {
  position: relative;
  padding-top: clamp(46px, 6vw, 76px);
  padding-bottom: clamp(46px, 6vw, 76px);
  border-top: 1px solid var(--color-border);
}

.deepdoc-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.deepdoc-section h2 {
  max-width: 790px;
  margin-top: 10px;
}

.deepdoc-section h3 {
  margin-top: 2.35em;
  padding-bottom: 11px;
  border-bottom: 1px solid var(--color-border);
  font-size: clamp(20px, 2vw, 26px);
}

.deepdoc-section p {
  color: var(--color-text-muted);
}

.deepdoc-section p strong {
  color: var(--color-text);
}

.chapter-mark {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
}

.deepdoc-section .callout {
  margin-top: 2em;
  margin-bottom: 2em;
}

.deepdoc-section .table-scroll {
  margin-top: 2.2em;
  margin-bottom: 2.2em;
}

.deepdoc-section table {
  line-height: 1.6;
}

.deepdoc-section table td {
  color: var(--color-text-muted);
}

.deepdoc-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 34px;
  margin-top: clamp(52px, 7vw, 88px);
  padding: clamp(28px, 5vw, 54px);
  border: 1px solid var(--color-border);
  background:
    linear-gradient(105deg, color-mix(in srgb, var(--color-accent) 8%, transparent), transparent 56%),
    var(--color-panel-raised);
}

.deepdoc-next h2 {
  margin-top: 8px;
  font-size: clamp(28px, 3.4vw, 42px);
}

.deepdoc-next p:not(.mono-label) {
  max-width: 680px;
  margin-top: 12px;
  color: var(--color-text-muted);
}

.deepdoc-next-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
}

@media (max-width: 1040px) {
  .deepdoc-hero-grid {
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .protocol-plate {
    width: min(100%, 720px);
  }

  .plate-core {
    min-height: 340px;
  }
}

@media (max-width: 820px) {
  .deepdoc-next {
    grid-template-columns: 1fr;
  }

  .deepdoc-next-links {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .deepdoc-hero-grid {
    gap: 42px;
    padding-top: 54px;
    padding-bottom: 64px;
  }

  .deepdoc-facts {
    align-items: flex-start;
    flex-direction: column;
  }

  .protocol-plate::before {
    transform: translate(6px, 6px);
  }

  .plate-core {
    min-height: 270px;
  }

  .plate-core svg {
    inset: 12px;
    width: calc(100% - 24px);
    height: calc(100% - 24px);
  }

  .plate-node {
    min-width: 42px;
    min-height: 24px;
    font-size: 9px;
  }

  .plate-header,
  .plate-footer {
    font-size: 8px;
  }

  .deepdoc-article {
    font-size: 15px;
    line-height: 1.84;
  }

  .deepdoc-section h3 {
    margin-top: 2em;
  }

  .deepdoc-next-links {
    align-items: stretch;
    flex-direction: column;
  }

  .deepdoc-next-links .btn-secondary {
    width: 100%;
  }
}

@media (max-width: 390px) {
  .plate-node-route {
    right: 18%;
  }

  .plate-node-exit {
    right: 2%;
  }

  .plate-header span:last-child,
  .plate-footer span:last-child {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .protocol-plate::before {
    transform: translate(6px, 6px);
  }
}