:root {
  --color-pm-blue: #2055d4;
  --color-pm-blue-light: #eef2ff;
  --color-ochre: #9b6f1e;
  --color-ochre-light: #fbf4e6;
  --color-data-green: #1a7a54;
  --color-data-green-light: #e6f5ee;
  --color-game-purple: #6535b8;
  --color-game-purple-light: #f1ecfb;
  --neutral-50: #fafaf7;
  --neutral-100: #f4f1ea;
  --neutral-150: #eeeae0;
  --neutral-200: #ddd8cc;
  --neutral-300: #c4bdae;
  --neutral-500: #7e786b;
  --neutral-600: #6b6558;
  --neutral-700: #514c42;
  --neutral-900: #1a1814;
  --bg-base: var(--neutral-50);
  --bg-elevated: #ffffff;
  --bg-sunken: var(--neutral-100);
  --text-primary: var(--neutral-900);
  --text-secondary: var(--neutral-600);
  --border-default: var(--neutral-200);
  --border-strong: var(--neutral-300);
  --font-display: "DM Serif Display", Georgia, serif;
  --font-body: "DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;
  --radius-sm: 4px;
  --radius-md: 8px;
  --shadow-sm: 0 2px 4px rgba(26, 24, 20, 0.06), 0 1px 2px rgba(26, 24, 20, 0.04);
  --shadow-md: 0 4px 12px rgba(26, 24, 20, 0.08), 0 2px 4px rgba(26, 24, 20, 0.04);
  --shadow-lg: 0 10px 28px rgba(26, 24, 20, 0.12), 0 4px 8px rgba(26, 24, 20, 0.05);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background:
    linear-gradient(90deg, rgba(32, 85, 212, 0.04) 1px, transparent 1px),
    linear-gradient(180deg, rgba(26, 122, 84, 0.035) 1px, transparent 1px),
    var(--bg-base);
  background-size: 56px 56px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

img,
video,
iframe {
  max-width: 100%;
}

img,
video {
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: var(--color-pm-blue);
}

.site-shell {
  overflow: hidden;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  border-bottom: 1px solid var(--border-default);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(14px);
}

.nav-inner {
  width: min(1280px, calc(100% - 32px));
  min-height: 64px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 1;
}

.brand-mark {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-size: 22px;
}

.nav-links,
.social-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links {
  margin-left: auto;
}

.nav-links a,
.social-links a,
.button,
.filter-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.2;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, color 180ms ease;
}

.nav-links a {
  color: var(--text-secondary);
}

.nav-links a[aria-current="page"],
.nav-links a:hover {
  border-color: rgba(32, 85, 212, 0.18);
  background: var(--color-pm-blue-light);
  color: var(--color-pm-blue);
}

.social-links a {
  width: 38px;
  padding: 0;
  border-color: var(--border-default);
  background: var(--bg-elevated);
}

.page-main {
  width: min(1280px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  padding: 42px 0 38px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 46px;
  align-items: center;
  border-bottom: 1px solid var(--border-default);
}

.hero.compact {
  min-height: 0;
  padding: 58px 0 34px;
  grid-template-columns: minmax(0, 1fr);
  max-width: 1080px;
}

.eyebrow,
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 20px;
  color: var(--color-pm-blue);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.eyebrow::before,
.kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: currentColor;
}

h1,
h2,
h3 {
  color: var(--text-primary);
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: 0;
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(44px, 6vw, 76px);
}

h2 {
  margin: 0;
  font-size: clamp(32px, 4vw, 54px);
}

h3 {
  margin: 0;
  font-size: 26px;
}

p {
  color: var(--text-secondary);
}

.lead {
  max-width: 720px;
  margin: 0 0 24px;
  font-size: 17px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button.primary {
  border-color: var(--color-pm-blue);
  background: var(--color-pm-blue);
  color: #fff;
}

.button.secondary {
  border-color: var(--border-default);
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.button:hover,
.filter-button:hover {
  transform: translateY(-2px);
}

.pill-row,
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill,
.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 11px;
  border: 1px solid rgba(32, 85, 212, 0.14);
  border-radius: 999px;
  background: var(--color-pm-blue-light);
  color: var(--color-pm-blue);
  font-size: 12px;
  font-weight: 700;
}

.pill.ochre,
.tag.ochre {
  border-color: rgba(155, 111, 30, 0.16);
  background: var(--color-ochre-light);
  color: var(--color-ochre);
}

.pill.green,
.tag.green {
  border-color: rgba(26, 122, 84, 0.16);
  background: var(--color-data-green-light);
  color: var(--color-data-green);
}

.pill.purple,
.tag.purple {
  border-color: rgba(101, 53, 184, 0.16);
  background: var(--color-game-purple-light);
  color: var(--color-game-purple);
}

.profile-panel {
  align-self: stretch;
  display: grid;
  align-content: center;
  gap: 14px;
}

.portrait-card {
  padding: 14px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-md);
}

.portrait-card img {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  object-fit: cover;
  filter: saturate(0.92);
}

.data-card,
.note-card,
.content-card,
.project-card,
.media-card,
.book-card,
.timeline-card,
.case-panel {
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-sm);
}

.data-card {
  padding: 14px;
}

.mono-label {
  margin-bottom: 12px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

.bar-row {
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 12px;
  align-items: center;
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 700;
}

.bar-label {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--text-primary);
}

.bar-label i {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-pm-blue-light);
  color: var(--color-pm-blue);
  font-size: 10px;
}

.bar-label.data i {
  background: var(--color-data-green-light);
  color: var(--color-data-green);
}

.bar-label.psychology i {
  background: var(--color-ochre-light);
  color: var(--color-ochre);
}

.bar-label.software i {
  background: var(--color-game-purple-light);
  color: var(--color-game-purple);
}

.bar-track {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--bg-sunken);
}

.bar-fill {
  display: block;
  height: 100%;
  background: var(--color-pm-blue);
}

.bar-fill.product {
  width: 76%;
}

.bar-fill.data {
  width: 76%;
  background: var(--color-data-green);
}

.bar-fill.psychology {
  width: 76%;
  background: var(--color-ochre);
}

.bar-fill.software {
  width: 76%;
  background: var(--color-game-purple);
}

.section-band {
  padding: 58px 0;
  border-bottom: 1px solid var(--border-default);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 0.5fr);
  gap: 28px;
  align-items: end;
  margin-bottom: 26px;
}

.section-head p {
  margin: 0;
}

.note-card {
  margin-top: 22px;
  padding: 15px 18px;
  border-left: 4px solid var(--color-ochre);
  background: var(--color-ochre-light);
}

.note-card p {
  margin: 0;
}

.timeline-grid,
.content-grid,
.project-grid,
.book-grid,
.media-grid {
  display: grid;
  gap: 18px;
}

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

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

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

.content-card,
.timeline-card {
  padding: 20px;
}

.timeline-card {
  display: grid;
  gap: 14px;
  border-top: 4px solid var(--color-data-green);
}

.timeline-card:nth-child(1) {
  border-top-color: var(--color-ochre);
}

.timeline-card:nth-child(3) {
  border-top-color: var(--color-game-purple);
}

.experience-list {
  position: relative;
  display: grid;
  gap: 0;
}

.experience-list::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 176px;
  width: 1px;
  background: var(--border-default);
  transform: translateX(-50%);
}

.experience-item {
  position: relative;
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 52px;
  padding: 0 0 28px;
}

.experience-item::before {
  content: "";
  position: absolute;
  top: 8px;
  left: 176px;
  width: 17px;
  height: 17px;
  border: 3px solid var(--bg-base);
  border-radius: 50%;
  background: #8fa1c7;
  box-shadow: 0 0 0 1px var(--border-default);
  transform: translateX(-50%);
}

.experience-item.is-current::before {
  background: var(--color-pm-blue);
}

.education-list::before {
  background: var(--color-data-green);
}

.education-list .experience-item::before {
  width: 20px;
  height: 20px;
  border-color: var(--bg-base);
  background: var(--color-data-green-light);
  box-shadow: 0 0 0 1px rgba(26, 122, 84, 0.34);
}

.education-list .experience-item::after {
  content: "";
  position: absolute;
  top: 20px;
  left: 176px;
  width: 4px;
  height: 7px;
  border-right: 2px solid var(--color-data-green);
  border-bottom: 2px solid var(--color-data-green);
  transform: translate(-50%, -50%) rotate(45deg);
  transform-origin: center;
}

.experience-date {
  display: grid;
  align-content: start;
  gap: 8px;
  padding-top: 4px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
}

.experience-date strong {
  width: fit-content;
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--color-data-green-light);
  color: var(--color-data-green);
  font-family: var(--font-body);
  font-size: 11px;
  line-height: 1;
}

.experience-body {
  padding: 4px 0 26px;
  border-bottom: 1px solid var(--border-default);
}

.experience-item:last-child {
  padding-bottom: 0;
}

.experience-item:last-child .experience-body {
  border-bottom: 0;
}

.experience-body h3 {
  margin-bottom: 6px;
  font-size: 29px;
}

.experience-company {
  margin: 0 0 14px;
  color: var(--color-pm-blue);
  font-weight: 800;
}

.experience-body .tag-list {
  margin-top: 16px;
}

.meta {
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 12px;
}

.clean-list {
  margin: 0;
  padding-left: 18px;
  color: var(--text-secondary);
}

.clean-list li + li {
  margin-top: 7px;
}

.course-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.course-row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  min-height: 62px;
  gap: 12px;
  padding: 10px 12px;
  border: 2px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-sm);
}

.course-row > div {
  min-width: 0;
}

.course-row h3 {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 800;
  line-height: 1.18;
}

.course-row .button {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 8px;
  min-width: 30px;
  min-height: 30px;
  width: 30px;
  height: 30px;
  justify-self: end;
  padding: 0;
  border: 1px solid rgba(32, 85, 212, 0.18);
  border-radius: 50%;
  background: var(--bg-elevated);
  color: var(--color-pm-blue);
  font-size: 15px;
  font-weight: 800;
}

.course-row .button::after {
  content: "\2192";
  display: inline-block;
  transition: transform 180ms ease;
}

.course-row .button:hover {
  transform: none;
}

.course-row .button:hover::after {
  transform: translateX(3px);
}

.course-row.course-data {
  border-color: rgba(26, 122, 84, 0.74);
}

.course-row.course-software {
  border-color: rgba(101, 53, 184, 0.74);
}

.course-row.course-product {
  border-color: rgba(32, 85, 212, 0.74);
}

.capability-map {
  overflow: hidden;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background:
    linear-gradient(135deg, rgba(32, 85, 212, 0.06), transparent 34%),
    var(--bg-elevated);
  box-shadow: var(--shadow-sm);
}

.capability-header,
.capability-row {
  display: grid;
  grid-template-columns: minmax(170px, 0.9fr) repeat(4, minmax(0, 1fr));
}

.capability-header {
  border-bottom: 1px solid var(--border-default);
  background: var(--bg-sunken);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.capability-header span {
  padding: 14px 16px;
}

.capability-row + .capability-row {
  border-top: 1px solid var(--border-default);
}

.capability-title,
.skill-cell {
  min-height: 122px;
  padding: 15px;
}

.capability-title {
  display: grid;
  align-content: start;
  gap: 8px;
  border-right: 1px solid var(--border-default);
  background: rgba(250, 250, 247, 0.76);
}

.capability-title span {
  color: var(--color-pm-blue);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
}

.capability-title h3 {
  font-size: 29px;
  line-height: 0.95;
}

.capability-title p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.45;
}

.skill-cell {
  position: relative;
  border-right: 1px solid var(--border-default);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 800;
  line-height: 1.9;
}

.skill-cell:last-child {
  border-right: 0;
}

.project-card,
.media-card {
  overflow: hidden;
  display: grid;
  grid-template-rows: auto 1fr;
  border-top: 4px solid var(--neutral-300);
  background: var(--bg-elevated);
}

.project-media,
.media-frame {
  position: relative;
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-bottom: 1px solid var(--border-default);
  background: var(--neutral-100);
}

.project-media img,
.media-frame img,
.media-frame video,
.media-frame iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.media-frame img,
.media-frame video,
.media-frame iframe {
  object-fit: cover;
}

.project-media img {
  padding: 12px;
  object-fit: contain;
}

.project-card .project-body,
.media-body {
  display: grid;
  align-content: start;
  padding: 16px;
  background: var(--bg-elevated);
}

.project-card h3,
.media-card h3 {
  margin-bottom: 8px;
  font-size: 24px;
}

.project-card p,
.media-card p {
  margin: 0 0 16px;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 24px;
}

.filter-button {
  border-color: var(--border-default);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  cursor: pointer;
}

.filter-button.is-active {
  border-color: rgba(26, 122, 84, 0.22);
  background: var(--color-data-green-light);
  color: var(--color-data-green);
}

.book-section {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 26px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border-default);
}

.book-section h2 {
  position: sticky;
  top: 100px;
  align-self: start;
  font-size: 29px;
}

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

.book-card {
  display: grid;
  grid-template-columns: 116px minmax(0, 1fr);
  gap: 14px;
  padding: 12px;
}

.book-card img {
  width: 116px;
  height: 164px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  box-shadow: var(--shadow-sm);
}

.book-card h3 {
  margin-bottom: 10px;
  font-size: 21px;
}

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

.media-section {
  padding: 34px 0;
  border-bottom: 1px solid var(--border-default);
}

.media-section h2 {
  margin-bottom: 18px;
  font-size: 34px;
}

.case-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-pm-blue);
  font-size: 13px;
  font-weight: 800;
}

.case-link::after {
  content: "\2192";
  transition: transform 180ms ease;
}

.case-link:hover::after {
  transform: translateX(3px);
}

.card-title-row {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

.mobile-project-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.phone-card {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: 15px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  box-shadow: var(--shadow-sm);
  border-top: 4px solid var(--neutral-300);
}

.phone-frame {
  position: relative;
  max-width: 184px;
  margin: 0 auto;
  padding: 10px;
  border: 1px solid var(--neutral-300);
  border-radius: 28px;
  background: var(--neutral-900);
  box-shadow: var(--shadow-md);
}

.phone-frame::before {
  content: "";
  position: absolute;
  top: 5px;
  left: 50%;
  width: 46px;
  height: 4px;
  border-radius: 999px;
  background: rgba(255,255,255,0.18);
  transform: translateX(-50%);
}

.phone-frame video {
  width: 100%;
  aspect-ratio: 9 / 18;
  border-radius: 20px;
  object-fit: cover;
}

.phone-card h3 {
  font-size: 21px;
}

.phone-card .case-link {
  margin-top: 4px;
}

.case-hero {
  padding: 54px 0 30px;
  border-bottom: 1px solid var(--border-default);
}

.case-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 26px;
  padding: 32px 0 60px;
}

.case-panel {
  padding: 20px;
}

.case-panel + .case-panel {
  margin-top: 20px;
}

.case-media {
  display: grid;
  gap: 18px;
}

.evidence-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.evidence-grid img {
  width: min(520px, 100%);
  margin: 0 auto;
  height: auto;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--bg-sunken);
  padding: 18px;
  box-shadow: var(--shadow-sm);
  object-fit: contain;
}

.case-slide {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.7fr);
  gap: 18px;
  align-items: center;
  padding: 18px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
}

.case-slide img,
.case-slide iframe {
  width: 100%;
  aspect-ratio: 16 / 10;
  height: auto;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--bg-sunken);
  object-fit: contain;
}

.case-slide h2 {
  margin-bottom: 10px;
  font-size: 29px;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.tool-card {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
}

.tool-card img {
  flex: 0 0 auto;
  width: 32px;
  height: 32px;
  padding: 4px;
  border-radius: 6px;
  background: var(--neutral-50);
  object-fit: contain;
}

.tool-card span {
  min-width: 0;
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.15;
  overflow-wrap: anywhere;
}

.site-footer {
  width: min(1280px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  color: var(--text-secondary);
  font-size: 13px;
}

.is-hidden {
  display: none !important;
}

@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav-links,
  .social-links {
    display: none;
  }

  .site-nav.is-open .nav-links,
  .site-nav.is-open .social-links {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 64px;
    display: grid;
    padding: 14px;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    background: var(--bg-elevated);
    box-shadow: var(--shadow-lg);
  }

  .site-nav.is-open .social-links {
    top: 268px;
    grid-template-columns: repeat(2, 38px);
  }

  .hero,
  .section-head,
  .case-layout,
  .case-slide,
  .book-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 0;
    gap: 36px;
  }

  .timeline-grid,
  .content-grid.two,
  .content-grid.three,
  .project-grid,
  .book-grid,
  .media-grid,
  .mobile-project-grid {
    grid-template-columns: 1fr;
  }

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

  .book-section h2 {
    position: static;
  }

  .experience-list::before {
    left: 10px;
  }

  .experience-item {
    grid-template-columns: 1fr;
    gap: 12px;
    padding-left: 34px;
  }

  .experience-item::before {
    left: 10px;
  }

  .education-list .experience-item::after {
    left: 10px;
  }

  .capability-header {
    display: none;
  }

  .capability-row {
    grid-template-columns: 1fr;
  }

  .capability-title,
  .skill-cell {
    min-height: 0;
    padding: 16px;
  }

  .capability-title {
    border-right: 0;
    border-bottom: 1px solid var(--border-default);
  }

  .skill-cell {
    border-right: 0;
    border-bottom: 1px solid var(--border-default);
  }

  .skill-cell::after {
    position: absolute;
    top: 17px;
    right: 16px;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .skill-cell-data::after {
    content: "Data";
  }

  .skill-cell-product::after {
    content: "Product";
  }

  .skill-cell-software::after {
    content: "Software";
  }

  .skill-cell-behavior::after {
    content: "Behavior";
  }
}

@media (max-width: 620px) {
  .page-main,
  .nav-inner,
  .site-footer {
    width: min(100% - 24px, 1180px);
  }

  h1 {
    font-size: 42px;
  }

  .hero,
  .section-band {
    padding: 42px 0;
  }

  .bar-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .book-card {
    grid-template-columns: 1fr;
  }

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

  .book-card img {
    width: 100%;
    height: auto;
    max-height: 340px;
  }

  .site-footer {
    display: grid;
  }
}