:root {
  color-scheme: light;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", "Menlo", "Consolas", monospace;
  color: #111111;
  background: #fafafa;
  --page: #fafafa;
  --surface: #ffffff;
  --surface-muted: #f0f0f0;
  --text: #111111;
  --muted: #555555;
  --faint: #999999;
  --line: #e4e4e4;
  --ink: #111111;
  --accent: #1d4ed8;
  --accent-soft: #eff3ff;
  --experienced: #555555;
  --experienced-soft: #ededed;
  --shadow: none;
  --radius: 6px;
  /* 백엔드 스택 구분 색 (배경은 연하게, 좌측 보더로 식별) */
  --csharp-soft: #f5f3fb;
  --csharp-line: #9b7fd4;
  --spring-soft: #eef7f1;
  --spring-line: #5cab7d;
  --node-soft: #fdf6ec;
  --node-line: #d8a25a;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--text);
}

a {
  color: inherit;
  text-decoration-color: rgba(29, 78, 216, 0.35);
  text-underline-offset: 3px;
}

a:hover {
  color: var(--accent);
}

a:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(29, 78, 216, 0.3);
  outline-offset: 4px;
  border-radius: 6px;
}

.top-nav {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  gap: 6px;
  justify-content: center;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(247, 247, 244, 0.92);
  backdrop-filter: blur(12px);
}

.top-nav a {
  padding: 8px 10px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

.top-nav a:hover {
  color: var(--accent);
}

main {
  padding-bottom: 72px;
}

.hero,
.section {
  width: min(1080px, calc(100% - 48px));
  margin: 0 auto;
}

.hero {
  padding: 72px 0 44px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  font-size: 52px;
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -.03em;
}

h2 {
  margin: 0 0 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ink);
  font-size: 26px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -.02em;
}

h3 {
  margin: 0;
  font-size: 20px;
  line-height: 1.4;
  font-weight: 700;
  letter-spacing: -.01em;
}

h4 {
  margin: 0;
  font-size: 16px;
  line-height: 1.45;
  font-weight: 700;
  letter-spacing: -.01em;
}

.hero-summary {
  max-width: 760px;
  margin: 22px 0 0;
  color: #3f454b;
  font-size: 19px;
  line-height: 1.8;
}

.hero-profile {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-actions-secondary {
  margin-top: 10px;
}

.button-link {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.section {
  scroll-margin-top: 72px;
  padding: 44px 0;
  border-top: 1px solid var(--line);
}

.summary-page .section,
.summary-hero {
  width: calc(100% - 48px);
  max-width: 760px;
  margin: 0 auto;
}

.summary-hero {
  padding: 72px 0 44px;
}

.summary-hero h1 {
  max-width: 680px;
  font-size: 48px;
}

.summary-page .section {
  padding: 34px 0;
}

.summary-link-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.summary-link-note {
  margin: 0 0 14px;
  color: #3f454b;
  font-size: 15px;
  line-height: 1.7;
}

.summary-link {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  color: var(--text);
  font-size: 15px;
  font-weight: 750;
  text-decoration: none;
}

.summary-skill-list {
  display: grid;
  gap: 26px;
}

.summary-education-list {
  display: grid;
  gap: 18px;
}

.summary-skill-item h3 {
  margin-bottom: 8px;
  font-size: 18px;
  line-height: 1.35;
}

.summary-education-item h3 {
  margin-bottom: 6px;
  font-size: 18px;
  line-height: 1.35;
}

.summary-skill-item p,
.summary-education-item p {
  margin: 0;
  color: #202124;
  font-size: 16px;
  line-height: 1.65;
}

.snapshot-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.snapshot-item,
.skill-card,
.entry-card,
.project-card,
.compact-list article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.snapshot-item {
  min-height: 118px;
  padding: 18px;
}

.snapshot-item strong {
  display: block;
  margin-bottom: 10px;
  color: var(--faint);
  font-size: 13px;
  font-family: var(--mono);
  letter-spacing: .04em;
}

.snapshot-item span {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
}

.prose {
  max-width: 860px;
}

.prose p,
.entry-summary,
.compact-list p,
.contact-list p {
  margin: 0;
  color: #3f454b;
  font-size: 16px;
  line-height: 1.75;
}

.prose p + p {
  margin-top: 10px;
}

.details-block {
  max-width: 860px;
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.details-block summary {
  cursor: pointer;
  padding: 14px 16px;
  color: var(--accent);
  font-weight: 750;
}

.detail-list,
.bullet-list,
.compact-bullets {
  margin: 0;
  padding: 0;
  list-style: none;
}

.detail-list {
  padding: 0 16px 16px;
}

.detail-content {
  padding: 0 16px 16px;
}

.detail-content .detail-list {
  padding: 0;
}

.detail-section + .detail-section {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.detail-section h3,
.detail-section h4 {
  margin: 0 0 12px;
  color: #1f2328;
  font-size: 18px;
  line-height: 1.5;
}

.detail-section p {
  margin: 0;
  color: #3f454b;
  font-size: 15px;
  line-height: 1.75;
}

.detail-section p + p,
.detail-section .detail-bullets {
  margin-top: 12px;
}

.detail-list li,
.bullet-list li,
.compact-bullets li {
  position: relative;
  padding-left: 16px;
  color: #3f454b;
  font-size: 15px;
  line-height: 1.7;
}

.detail-list li::before,
.bullet-list li::before,
.compact-bullets li::before {
  position: absolute;
  left: 0;
  content: "";
  width: 5px;
  height: 5px;
  margin-top: 10px;
  border-radius: 50%;
  background: var(--accent);
}

.project-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.filter-tab {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  font-family: var(--mono);
  line-height: 1.3;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.filter-tab:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.filter-tab.active {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.project-card.is-hidden {
  display: none;
}

/* 백엔드 스택은 서로 배타적이므로 카드마다 하나의 색만 적용된다. */
.project-card[data-categories~="csharp"] {
  background: var(--csharp-soft);
  border-left: 3px solid var(--csharp-line);
}

.project-card[data-categories~="spring"] {
  background: var(--spring-soft);
  border-left: 3px solid var(--spring-line);
}

.project-card[data-categories~="node"] {
  background: var(--node-soft);
  border-left: 3px solid var(--node-line);
}

.project-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 18px;
  font-size: 12px;
  color: var(--muted);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.legend-dot {
  width: 11px;
  height: 11px;
  border-radius: 3px;
  border: 1px solid transparent;
}

.legend-dot.csharp {
  background: var(--csharp-soft);
  border-color: var(--csharp-line);
}

.legend-dot.spring {
  background: var(--spring-soft);
  border-color: var(--spring-line);
}

.legend-dot.node {
  background: var(--node-soft);
  border-color: var(--node-line);
}

.skills-grid,
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.skill-card {
  padding: 18px;
}

.skill-card h3 {
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: .04em;
}

.badge-row,
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.badge-row + .badge-row {
  margin-top: 10px;
}

.badge-row.empty,
.project-links.empty {
  display: none;
}

.badge-label {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 800;
}

.badge,
.tag {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 4px 9px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.3;
}

.badge.production {
  background: var(--accent-soft);
  color: var(--accent);
}

.badge.experienced {
  background: var(--experienced-soft);
  color: var(--experienced);
}

.tag {
  background: var(--surface-muted);
  color: #3f454b;
  font-family: var(--mono);
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tag-list li {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 4px 9px;
  border-radius: 4px;
  background: var(--surface-muted);
  color: #3f454b;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.3;
}

.stack {
  display: grid;
  gap: 14px;
}

.entry-card,
.project-card {
  padding: 20px;
}

.entry-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin-bottom: 10px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 750;
}

.entry-summary {
  margin-top: 10px;
}

.bullet-list {
  display: grid;
  gap: 4px;
  margin-top: 14px;
}

.project-grid {
  align-items: start;
}

.project-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
}

.project-card .tag-row {
  margin-top: 14px;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.text-link {
  color: var(--accent);
  font-size: 14px;
  font-weight: 750;
}

.compact-list {
  display: grid;
  gap: 10px;
}

.compact-list article {
  padding: 16px;
}

.period {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 750;
}

.compact-bullets {
  display: grid;
  gap: 8px;
}

.contact-list {
  display: grid;
  gap: 8px;
}

.contact-value {
  color: #3f454b;
}

.top-link {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  margin-top: 22px;
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.top-link:hover {
  color: var(--accent);
}

.section-kicker {
  margin: 0 0 8px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.ai-hero-panel,
.ai-summary-card,
.project-detail-hero,
.project-detail-highlights article,
.project-detail-card,
.workflow-card,
.routing-list article,
.ai-group-card,
.agent-card,
.example-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.project-detail-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.72fr);
  gap: 20px;
  align-items: center;
  padding: 20px;
  background: var(--surface);
}

.project-page-hero {
  padding-bottom: 48px;
}

.project-detail-page {
  border-top: 0;
  padding-top: 32px;
}

.project-detail-copy h3 {
  max-width: 720px;
  font-size: 26px;
}

.project-detail-copy h2 {
  margin-bottom: 12px;
  border-bottom: 0;
  padding-bottom: 0;
}

.project-detail-copy .entry-summary {
  max-width: 760px;
}

.project-detail-media {
  display: grid;
  gap: 10px;
}

.project-detail-media.empty {
  display: none;
}

.project-detail-media figure {
  margin: 0;
}

.project-detail-media img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  object-fit: cover;
  background: var(--surface-muted);
}

.project-detail-media figcaption {
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.doc-figure {
  margin: 16px 0 0;
}

.doc-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.doc-figure figcaption {
  margin-top: 8px;
  text-align: center;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.callout {
  display: flex;
  gap: 10px;
  margin: 16px 0 0;
  padding: 14px 16px;
  background: var(--accent-soft);
  border-radius: var(--radius);
}

.callout .callout-icon {
  flex-shrink: 0;
  font-size: 16px;
  line-height: 1.6;
}

.callout p {
  margin: 0;
  color: var(--accent);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.6;
}

.event-flow-visual {
  display: grid;
  gap: 8px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(29, 78, 216, 0.10), rgba(255, 255, 255, 0.75)),
    var(--surface-muted);
}

.event-flow-node {
  display: flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(38, 48, 45, 0.1);
  border-radius: var(--radius);
  background: #ffffff;
  color: #26302d;
  font-size: 14px;
  font-weight: 700;
  text-align: center;
}

.event-flow-entry {
  background: #eff3ff;
}

.event-flow-arrow {
  justify-self: center;
  width: 2px;
  height: 18px;
  border-radius: 4px;
  background: #7d8b85;
  position: relative;
}

.event-flow-arrow::after {
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 8px;
  height: 8px;
  border-right: 2px solid #7d8b85;
  border-bottom: 2px solid #7d8b85;
  content: "";
  transform: translateX(-50%) rotate(45deg);
}

.project-detail-highlights {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 28px;
}

.project-detail-highlights article {
  min-height: 84px;
  padding: 16px;
  background: #f5f7ff;
}

.project-detail-highlights strong {
  display: block;
  color: #26302d;
  font-size: 15px;
  line-height: 1.55;
}

.project-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.project-detail-card {
  padding: 18px;
}

.ai-panel {
  margin-top: 40px;
}

.ai-panel-head {
  margin-bottom: 16px;
}

.ai-panel-head .section-kicker {
  margin-bottom: 6px;
}

.ai-panel-head h2 {
  margin-bottom: 0;
}

.project-detail-card h4 {
  margin-bottom: 12px;
}

.ai-hero-panel {
  padding: 24px;
  background: linear-gradient(180deg, #ffffff 0%, #f5f7ff 100%);
}

.ai-hero-panel h3 {
  max-width: 820px;
  font-size: 26px;
  line-height: 1.35;
}

.ai-principles {
  list-style: none;
  max-width: 820px;
  margin: 18px 0 14px;
  padding: 0;
  display: grid;
  gap: 8px;
  counter-reset: ai-principle;
}

.ai-principles li {
  position: relative;
  padding: 11px 16px 11px 46px;
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  color: var(--accent);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  counter-increment: ai-principle;
}

.ai-principles li::before {
  content: counter(ai-principle);
  position: absolute;
  top: 50%;
  left: 14px;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: var(--accent);
  border-radius: 50%;
  color: #ffffff;
  font-size: 13px;
  font-weight: 800;
}

.ai-hero-panel .entry-summary {
  max-width: 820px;
}

.ai-media-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) repeat(3, minmax(0, 0.7fr));
  gap: 10px;
  margin-top: 14px;
}

.ai-media-grid.empty {
  display: none;
}

.ai-media-grid figure {
  margin: 0;
}

.ai-media-grid figure:first-child {
  grid-row: span 2;
}

.ai-media-grid img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 132px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  object-fit: cover;
  background: var(--surface-muted);
}

.ai-media-grid figure:first-child img {
  min-height: 274px;
}

.ai-media-grid figcaption {
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.video-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 14px;
}

.video-grid iframe {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: var(--radius);
}

.phone-shot-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.phone-shot-grid figure {
  margin: 0;
}

.phone-shot-grid img {
  display: block;
  width: 100%;
  aspect-ratio: 9 / 16;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  object-fit: cover;
  object-position: top center;
  background: var(--surface-muted);
  box-shadow: var(--shadow);
}

.phone-shot-grid figcaption {
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.ai-summary-grid,
.workflow-grid,
.ai-group-grid,
.example-grid {
  display: grid;
  gap: 12px;
}

.ai-summary-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 14px;
}

.ai-summary-card {
  min-height: 116px;
  padding: 18px;
}

.ai-summary-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 17px;
}

.ai-summary-card span {
  color: #3f454b;
  font-size: 15px;
  line-height: 1.6;
}

.ai-block {
  margin-top: 24px;
}

.ai-block > h3 {
  margin-bottom: 14px;
}

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

.workflow-card {
  padding: 18px;
}

.workflow-name {
  display: inline-flex;
  min-height: 26px;
  align-items: center;
  margin-bottom: 10px;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 850;
}

.workflow-steps {
  margin: 12px 0;
  padding: 12px;
  border-radius: var(--radius);
  background: var(--surface-muted);
  color: #30363d;
  font-size: 14px;
  font-weight: 750;
  line-height: 1.7;
}

.workflow-diagram {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 12px 0;
  padding: 14px;
  border-radius: var(--radius);
  background: var(--surface-muted);
}

.workflow-diagram-fork {
  align-items: flex-start;
}

.workflow-node {
  display: inline-flex;
  flex-direction: column;
  min-height: 52px;
  min-width: 120px;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: #30363d;
  font-size: 13px;
  font-weight: 850;
  line-height: 1.25;
  text-align: center;
  white-space: nowrap;
}

.workflow-node-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-muted, #6e7681);
  margin-bottom: 3px;
}

.workflow-node-name {
  display: block;
  font-size: 14px;
  font-weight: 850;
  color: var(--text-heading, #30363d);
}

.workflow-node.node-input {
  border-color: rgba(139, 92, 246, 0.28);
  background: rgba(139, 92, 246, 0.08);
}
.workflow-node.node-input .workflow-node-label {
  color: rgba(139, 92, 246, 0.85);
}

.workflow-node.node-skill {
  border-color: rgba(29, 78, 216, 0.28);
  background: var(--accent-soft);
}
.workflow-node.node-skill .workflow-node-label {
  color: var(--accent);
}
.workflow-node.node-skill .workflow-node-name {
  color: var(--accent);
}

.workflow-node.node-implement {
  border-color: rgba(245, 158, 11, 0.32);
  background: rgba(245, 158, 11, 0.1);
}
.workflow-node.node-implement .workflow-node-label {
  color: rgba(180, 110, 0, 0.95);
}

.workflow-node.node-test {
  border-color: rgba(59, 130, 246, 0.3);
  background: rgba(59, 130, 246, 0.08);
}
.workflow-node.node-test .workflow-node-label {
  color: rgba(37, 99, 235, 0.95);
}

.skill-node {
  border-color: rgba(29, 78, 216, 0.24);
  background: var(--accent-soft);
  color: var(--accent);
}

.workflow-arrow {
  position: relative;
  flex: 0 0 28px;
  height: 18px;
}

.workflow-arrow::before,
.workflow-arrow::after {
  position: absolute;
  top: 50%;
  content: "";
}

.workflow-arrow::before {
  left: 2px;
  right: 7px;
  height: 2px;
  border-radius: 4px;
  background: linear-gradient(90deg, rgba(29, 78, 216, 0.18), rgba(29, 78, 216, 0.68));
  transform: translateY(-50%);
}

.workflow-arrow::after {
  right: 2px;
  width: 8px;
  height: 8px;
  border-top: 2px solid rgba(29, 78, 216, 0.68);
  border-right: 2px solid rgba(29, 78, 216, 0.68);
  transform: translateY(-50%) rotate(45deg);
}

.workflow-branches {
  display: grid;
  gap: 10px;
  min-width: min(100%, 360px);
  flex: 1 1 360px;
}

.workflow-branch {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.62);
}

.workflow-branch-label {
  display: inline-flex;
  min-height: 26px;
  align-items: center;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--experienced-soft);
  color: var(--experienced);
  font-size: 12px;
  font-weight: 850;
}

.implement-notes {
  display: grid;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.implement-note {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-left: 3px solid rgba(245, 158, 11, 0.55);
  border-radius: var(--radius);
  background: rgba(245, 158, 11, 0.06);
}

.implement-note-head {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 5px;
}

.implement-note-name {
  font-size: 13.5px;
  font-weight: 850;
  color: rgba(180, 110, 0, 0.95);
}

.implement-note-scale {
  display: inline-flex;
  align-items: center;
  padding: 2px 9px;
  border-radius: 4px;
  background: var(--experienced-soft);
  color: var(--experienced);
  font-size: 11px;
  font-weight: 850;
}

.implement-note-desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: #3f454b;
}

.routing-list {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.routing-list article {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
}

.routing-list strong {
  font-size: 13px;
  color: var(--accent);
}

.routing-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.routing-tags span {
  padding: 3px 10px;
  background: var(--accent-soft);
  border-radius: 4px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}

.routing-list p,
.ai-group-card p,
.agent-card p,
.example-card p {
  margin: 0;
  color: #3f454b;
  font-size: 14px;
  line-height: 1.65;
}

.ai-sub-title {
  margin: 24px 0 10px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

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

.ai-group-card,
.agent-card,
.example-card {
  padding: 16px;
}

.ai-group-card p {
  margin-top: 8px;
}

.ai-group-card .tag-row {
  margin-top: 12px;
}

.agent-pipeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.agent-card span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 850;
}

.agent-card strong {
  display: block;
  margin-bottom: 8px;
}

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

.ai-hero-points {
  max-width: 820px;
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

@media (max-width: 860px) {
  .snapshot-grid,
  .skills-grid,
  .project-grid,
  .project-detail-hero,
  .project-detail-highlights,
  .project-detail-grid,
  .ai-media-grid,
  .video-grid,
  .ai-summary-grid,
  .workflow-grid,
  .ai-group-grid,
  .agent-pipeline,
  .example-grid {
    grid-template-columns: 1fr;
  }

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

  .routing-list article {
    grid-template-columns: 1fr;
  }

  .ai-media-grid figure:first-child {
    grid-row: auto;
  }

  .ai-media-grid figure:first-child img {
    min-height: 210px;
  }
}

@media (max-width: 720px) {
  .top-nav {
    justify-content: flex-start;
    overflow-x: auto;
    padding: 8px 12px;
  }

  .top-nav a {
    flex: 0 0 auto;
  }

  .hero,
  .section {
    width: min(100% - 32px, 1080px);
  }

  .hero {
    padding: 52px 0 34px;
  }

  h1 {
    font-size: 38px;
  }

  .summary-hero h1 {
    font-size: 32px;
  }

  h2 {
    font-size: 23px;
  }

  h3 {
    font-size: 18px;
  }

  h4 {
    font-size: 15px;
  }

  .hero-summary {
    font-size: 17px;
  }

  .section {
    padding: 34px 0;
  }

  .snapshot-item {
    min-height: 0;
  }

  .entry-card,
  .project-card,
  .skill-card,
  .project-detail-hero,
  .project-detail-card,
  .ai-hero-panel,
  .ai-summary-card,
  .workflow-card,
  .ai-group-card,
  .agent-card,
  .example-card,
  .ai-hero-panel h3 {
    font-size: 21px;
  }

  .project-detail-copy h3 {
    font-size: 21px;
  }

}

.site-footer {
  margin-top: 48px;
  padding: 20px 24px;
  border-top: 1px solid var(--line);
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

@media print {
  @page {
    size: A4;
    margin: 12mm;
  }

  html,
  body,
  #app,
  .summary-page {
    background: #ffffff;
  }

  main {
    padding-bottom: 0;
  }

  .summary-nav {
    display: none;
  }

  .site-footer {
    display: none;
  }

  .summary-hero {
    padding: 0 0 18px;
  }

  .summary-hero h1 {
    font-size: 34px;
  }

  .summary-hero .eyebrow,
  .hero-profile {
    font-size: 12px;
  }

  .summary-page h2 {
    break-after: avoid;
    page-break-after: avoid;
    font-size: 21px;
  }

  .summary-page h3 {
    font-size: 16px;
  }

  .summary-page .prose p,
  .summary-link-note,
  .summary-skill-item p,
  .summary-education-item p,
  .entry-summary,
  .bullet-list li,
  .compact-list p {
    font-size: 13.5px;
    line-height: 1.55;
  }

  .entry-meta,
  .period {
    font-size: 11.5px;
  }

  .summary-page .section {
    padding: 18px 0;
  }

  .summary-page .entry-card {
    padding: 16px;
  }

  .summary-page .entry-summary {
    margin-top: 8px;
  }

  .summary-page .bullet-list {
    gap: 2px;
    margin-top: 10px;
  }

  .summary-skill-list {
    gap: 14px;
  }

  .summary-education-list {
    gap: 10px;
  }

  .summary-skill-item h3,
  .summary-education-item h3 {
    margin-bottom: 4px;
  }

  .summary-page .section,
  .summary-hero {
    width: 100%;
    max-width: none;
  }

  .summary-page .entry-card,
  .summary-page .summary-education-item {
    break-inside: avoid;
    box-shadow: none;
  }
}