:root {
  --bg: #f6f7f4;
  --surface: #ffffff;
  --surface-soft: #edf2ee;
  --ink: #102321;
  --muted: #5d6966;
  --line: rgba(16, 35, 33, 0.14);
  --line-strong: rgba(16, 35, 33, 0.22);
  --accent: #173a34;
  --accent-soft: #dfeae4;
  --warm: #7b5f3e;
  --shadow: 0 10px 28px rgba(16, 35, 33, 0.06);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  font-size: 18px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

body,
button {
  letter-spacing: 0;
}

h1,
h2,
h3,
h4,
p,
ul,
ol,
figure {
  margin: 0;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

.container {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-sm);
  background: var(--ink);
  color: #fff;
  font-weight: 800;
  text-decoration: none;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.hero {
  padding: 4.8rem 0 2.7rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 330px);
  gap: 3rem;
  align-items: center;
}

.hero-copy {
  display: grid;
  gap: 1.1rem;
  max-width: 790px;
}

.hero-role,
.section-kicker,
.case-company,
.timeline-period {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  line-height: 1.3;
  text-transform: uppercase;
}

.hero-role {
  max-width: 42ch;
  font-size: clamp(1.1rem, 1.45vw, 1.35rem);
  letter-spacing: 0.045em;
  line-height: 1.25;
}

.hero-headline {
  max-width: 13ch;
  font-size: clamp(3rem, 7vw, 5.5rem);
  line-height: 0.98;
}

.hero-summary {
  max-width: 68ch;
  color: rgba(16, 35, 33, 0.88);
  font-size: 1.08rem;
}

.hero-proof-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 0;
  list-style: none;
}

.hero-proof-list li {
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: rgba(16, 35, 33, 0.82);
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1.25;
}

.hero-media {
  width: 100%;
  padding: 0.55rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero-media img {
  width: 100%;
  aspect-ratio: 1;
  height: auto;
  border-radius: 12px;
  object-fit: cover;
  object-position: center 48%;
}

.cta-row,
.case-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

@media (min-width: 1081px) {
  .hero .cta-row {
    flex-wrap: nowrap;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.48rem;
  min-height: 46px;
  max-width: 100%;
  padding: 0.72rem 1rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 850;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  white-space: normal;
}

.btn-icon {
  display: inline-grid;
  flex: 0 0 auto;
  place-items: center;
  width: 1.1rem;
  height: 1.1rem;
}

.btn-icon svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.btn-icon-hh {
  width: 1.55rem;
  height: 1.55rem;
  border-radius: 0.42rem;
  background: #d6001c;
  color: #fff;
  font-size: 0.78rem;
  font-weight: 900;
  line-height: 1;
  text-transform: lowercase;
}

.btn-label {
  min-width: 0;
}

.btn-primary {
  background: var(--ink);
  color: #fff;
}

.btn-secondary {
  border-color: var(--line-strong);
  background: var(--surface);
  color: var(--ink);
}

.btn-project {
  border-color: var(--warm);
  background: var(--warm);
  color: #fff;
}

.section {
  padding: 4.2rem 0;
}

.public-project-strip {
  padding: 0 0 1rem;
}

.public-project-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.5rem;
  align-items: center;
  padding: 1.35rem 1.45rem;
  border-radius: var(--radius-lg);
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow);
}

.public-project-copy {
  display: grid;
  gap: 0.45rem;
}

.public-project-kicker {
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  line-height: 1.3;
  text-transform: uppercase;
}

.public-project-card h2 {
  max-width: 34ch;
  font-size: clamp(1.35rem, 2.6vw, 2rem);
  line-height: 1.12;
}

.public-project-card p:last-child {
  max-width: 76ch;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.95rem;
}

.public-project-card .btn-project {
  min-width: 190px;
  border-color: #fff;
  background: #fff;
  color: var(--ink);
}

.useful-strip {
  padding: 0.75rem 0 3.6rem;
}

.useful-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}

.useful-item {
  min-height: 132px;
  padding: 0.95rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.useful-item h3 {
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.18;
}

.useful-item p {
  margin-top: 0.55rem;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.42;
}

.section + .section,
.case-detail-section,
.case-contact {
  border-top: 1px solid rgba(16, 35, 33, 0.08);
}

.section-head {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1.6rem;
}

.section-head-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(280px, 0.54fr);
  gap: 2rem;
  align-items: start;
}

.section-head h2 {
  max-width: 20ch;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
}

.section-head-compact .section-head-grid {
  grid-template-columns: minmax(0, 1fr);
}

.section-head-compact h2 {
  max-width: 24ch;
}

.section-head p {
  max-width: 60ch;
  color: var(--muted);
  font-size: 1rem;
}

.experience-list,
.cases-list {
  display: grid;
  gap: 1rem;
}

.experience-card,
.case-card,
.technical-project,
.process-card,
.leader-role-card,
.speaking-card,
.contact-card,
.case-detail-block {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.experience-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 1.5rem;
  padding: 1.25rem;
}

.experience-main h3 {
  margin-top: 0.28rem;
  font-size: 1.55rem;
  line-height: 1.15;
}

.timeline-role {
  margin-top: 0.2rem;
  color: var(--accent);
  font-weight: 850;
}

.experience-context {
  margin-top: 0.7rem;
  color: var(--muted);
}

.responsibility-list,
.case-card-body ul,
.leader-role-card ul,
.case-detail-block ul,
.contact-list {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.85rem;
  padding: 0;
  list-style: none;
}

.responsibility-list li,
.case-card-body li,
.leader-role-card li,
.case-detail-block li,
.contact-list li {
  position: relative;
  padding-left: 1rem;
  color: var(--muted);
}

.responsibility-list li::before,
.case-card-body li::before,
.leader-role-card li::before,
.case-detail-block li::before,
.contact-list li::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--warm);
}

.experience-side {
  display: grid;
  align-content: start;
  gap: 1rem;
}

.metric-list {
  display: grid;
  gap: 0.6rem;
}

.metric-item {
  padding: 0.85rem;
  border: 1px solid rgba(23, 58, 52, 0.14);
  border-radius: var(--radius-md);
  background: var(--accent-soft);
}

.metric-item strong,
.metric-item span {
  display: block;
}

.metric-item strong {
  color: var(--accent);
  font-size: 1.6rem;
  line-height: 1;
}

.metric-item span {
  margin-top: 0.35rem;
  color: rgba(16, 35, 33, 0.78);
  font-size: 0.9rem;
  line-height: 1.35;
}

.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tech-list li {
  padding: 0.34rem 0.62rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: rgba(16, 35, 33, 0.76);
  font-size: 0.82rem;
  font-weight: 750;
  line-height: 1.2;
}

.case-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(260px, 0.55fr) minmax(0, 1fr);
  gap: 0;
  overflow: hidden;
  padding: 0;
  transition:
    border-color 0.22s ease,
    box-shadow 0.22s ease,
    transform 0.22s ease;
}

.case-card:hover {
  border-color: rgba(23, 58, 52, 0.24);
  box-shadow: 0 18px 42px rgba(16, 35, 33, 0.09);
  transform: translateY(-2px);
}

.case-card-head {
  display: grid;
  align-content: start;
  padding: 1.25rem;
  border-right: 1px solid rgba(16, 35, 33, 0.1);
  background:
    linear-gradient(135deg, rgba(223, 234, 228, 0.95), rgba(255, 255, 255, 0.76)),
    var(--surface-soft);
}

.case-card-head .case-company {
  width: fit-content;
  max-width: 100%;
  padding: 0.28rem 0.5rem;
  border: 1px solid rgba(23, 58, 52, 0.13);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--accent);
}

.case-card-head h3 {
  margin-top: 0.62rem;
  font-size: 1.55rem;
  line-height: 1.16;
}

.case-situation-label {
  margin-top: 1rem;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  line-height: 1.3;
  text-transform: uppercase;
}

.case-card-head p:last-child,
.case-card-body p,
.technical-project p,
.process-card li,
.speaking-card p,
.contact-card p,
.case-detail-block p,
.result-list span {
  color: var(--muted);
}

.case-card-head p:last-child,
.case-card-body p,
.technical-project p,
.case-detail-block p {
  margin-top: 0.65rem;
}

.case-card-body {
  display: grid;
  gap: 0;
  padding: 1.25rem 1.25rem 1.15rem;
}

.case-card-body section {
  padding: 0.85rem 0 0.95rem;
  border-top: 1px solid rgba(16, 35, 33, 0.1);
}

.case-card-body section:first-child {
  padding-top: 0;
  border-top: 0;
}

.case-card-body h4 {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  line-height: 1.3;
  text-transform: uppercase;
}

.case-result {
  margin-top: 0.1rem;
  padding: 0.85rem 0 0.35rem;
  border-top: 1px solid rgba(16, 35, 33, 0.1);
  background: none;
}

.case-card-body .case-result {
  padding: 0.85rem 0 0.35rem;
  border-top-color: rgba(16, 35, 33, 0.08);
}

.text-link {
  display: inline-flex;
  width: fit-content;
  color: var(--accent);
  font-size: 0.94rem;
  font-weight: 850;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.case-card .text-link {
  margin-top: 0.95rem;
}

.technical-projects {
  margin-top: 1rem;
}

.technical-project {
  padding: 1.15rem;
}

.technical-project h3 {
  margin-top: 0.55rem;
  font-size: 1.15rem;
  line-height: 1.25;
}

.note {
  color: rgba(16, 35, 33, 0.7);
  font-size: 0.92rem;
}

.process-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 1rem;
  align-items: stretch;
}

.process-card,
.leader-role-card {
  padding: 1.2rem;
}

.process-card h3,
.leader-role-card h3,
.architecture-copy h3,
.speaking-card h3,
.contact-card h3 {
  font-size: 1.22rem;
  line-height: 1.22;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.55rem;
  margin-top: 1rem;
  padding: 0;
  list-style: none;
  counter-reset: process;
}

.process-list li {
  min-height: 88px;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
  font-size: 0.92rem;
  font-weight: 750;
  line-height: 1.3;
  counter-increment: process;
}

.process-list li::before {
  content: counter(process, decimal-leading-zero);
  display: block;
  margin-bottom: 0.35rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
}

.architecture-section {
  margin-top: 1.2rem;
}

.architecture-copy {
  display: grid;
  grid-template-columns: minmax(0, 0.35fr) minmax(0, 0.65fr);
  gap: 1rem;
  align-items: start;
  margin-bottom: 0.9rem;
}

.architecture-copy-compact {
  grid-template-columns: minmax(0, 1fr);
}

.architecture-copy p,
.architecture-responsibility {
  color: var(--muted);
}

.architecture-scroll {
  overflow-x: auto;
  padding: 0.25rem 0.25rem 0.7rem;
  scrollbar-color: rgba(23, 58, 52, 0.36) transparent;
}

.architecture-flow {
  display: grid;
  grid-template-columns: repeat(5, minmax(190px, 1fr));
  gap: 0.8rem;
  min-width: 1040px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.architecture-stage {
  position: relative;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 0.75rem;
  min-height: 318px;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.architecture-stage h4 {
  color: var(--ink);
  font-size: 1.08rem;
  line-height: 1.2;
}

.architecture-stage p {
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.42;
}

.architecture-tools {
  display: grid;
  align-content: end;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.architecture-tool {
  display: inline-flex;
  align-items: center;
  gap: 0.36rem;
  width: 100%;
  min-height: 34px;
  padding: 0.3rem 0.55rem 0.3rem 0.34rem;
  border: 1px solid rgba(23, 58, 52, 0.1);
  border-radius: 999px;
  background: var(--surface-soft);
  color: rgba(16, 35, 33, 0.82);
  font-size: 0.8rem;
  font-weight: 800;
  line-height: 1.12;
}

.architecture-tool-icon {
  display: inline-grid;
  flex: 0 0 auto;
  place-items: center;
  width: 1.72rem;
  height: 1.72rem;
  border-radius: 999px;
  background: #fff;
  box-shadow: inset 0 0 0 1px rgba(23, 58, 52, 0.12);
}

.architecture-tool-icon img {
  width: 20px;
  height: 20px;
  object-fit: contain;
}

.architecture-arrow {
  position: absolute;
  top: 50%;
  right: -0.78rem;
  z-index: 2;
  display: grid;
  width: 1.38rem;
  height: 1.38rem;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--accent);
  font-size: 0.86rem;
  font-weight: 900;
  line-height: 1;
  transform: translateY(-50%);
}

.architecture-responsibility {
  max-width: 78ch;
  margin-top: 0.85rem;
  font-size: 0.95rem;
}

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

.dashboard-card {
  display: grid;
  gap: 0.75rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.dashboard-card img {
  aspect-ratio: 16 / 9;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  object-fit: cover;
}

.dashboard-iframe {
  width: 100%;
  min-height: 640px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: 1rem;
}

.speaking-card,
.contact-card {
  padding: 1.2rem;
  display: grid;
  align-content: center;
  gap: 0.95rem;
}

.speaking-card h3 {
  margin-top: 0.55rem;
}

.speaking-card p,
.contact-card p {
  margin-top: 0.65rem;
}

.contact-actions {
  display: grid;
  gap: 0.72rem;
}

.contact-actions .btn {
  width: 100%;
  min-height: 58px;
  font-size: 1rem;
}

.contact-actions .btn-primary {
  box-shadow: 0 16px 30px rgba(16, 35, 33, 0.12);
}

.reveal-ready .reveal-item {
  opacity: 1;
}

@media (prefers-reduced-motion: no-preference) {
  .reveal-ready .reveal-item {
    opacity: 0;
    transform: translateY(18px);
    transition:
      opacity 0.62s ease,
      transform 0.62s cubic-bezier(0.22, 1, 0.36, 1);
  }

  .reveal-ready .reveal-item.is-visible {
    opacity: 1;
    transform: translateY(0);
  }

  .reveal-ready .case-card.reveal-item {
    transform: translateY(20px) scale(0.99);
  }

  .reveal-ready .case-card.reveal-item.is-visible {
    transform: translateY(0) scale(1);
  }
}

.contact-list a {
  color: var(--accent);
  font-weight: 800;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.site-footer {
  padding: 1.5rem 0 2rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.7rem 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.footer-inner p {
  color: rgba(16, 35, 33, 0.66);
  font-size: 0.9rem;
}

.case-hero {
  padding: 4rem 0 3.2rem;
}

.case-hero-grid {
  max-width: 920px;
}

.case-hero h1 {
  max-width: 18ch;
  margin-top: 0.6rem;
  font-size: clamp(2.35rem, 5vw, 4.2rem);
  line-height: 1.04;
}

.case-hero p:last-child {
  max-width: 68ch;
  margin-top: 1rem;
  color: rgba(16, 35, 33, 0.84);
  font-size: 1.08rem;
}

.back-link {
  display: inline-flex;
  margin-bottom: 1rem;
  color: var(--accent);
  font-size: 0.94rem;
  font-weight: 850;
  text-decoration: none;
}

.case-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.case-detail-block {
  padding: 1.15rem;
}

.case-detail-block h2 {
  font-size: 1.2rem;
  line-height: 1.2;
}

.case-detail-wide {
  grid-column: 1 / -1;
}

.result-list li {
  display: grid;
  gap: 0.3rem;
}

.result-list strong {
  color: var(--accent);
  font-size: 1.08rem;
}

.case-tech-list {
  margin-top: 0.85rem;
}

.case-tech-list li {
  padding-left: 0.62rem;
}

.case-tech-list li::before {
  display: none;
}

.case-contact-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

:where(a, button, .btn):focus-visible {
  outline: 3px solid rgba(123, 95, 62, 0.42);
  outline-offset: 3px;
}

@media (max-width: 1080px) {
  .experience-card,
  .case-card,
  .process-layout,
  .contact-layout,
  .public-project-card,
  .section-head-grid,
  .architecture-copy {
    grid-template-columns: 1fr;
  }

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

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

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

@media (max-width: 760px) {
  body {
    font-size: 17px;
  }

  .container {
    width: calc(100% - 28px);
  }

  .hero {
    padding: 3.1rem 0 3.4rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .hero-media {
    width: 100%;
    max-width: 520px;
    justify-self: center;
  }

  .public-project-card {
    padding: 1.15rem;
  }

  .public-project-card .btn-project {
    width: 100%;
  }

  .section {
    padding: 3.2rem 0;
  }

  .experience-card,
  .case-card,
  .technical-project,
  .process-card,
  .leader-role-card,
  .speaking-card,
  .contact-card,
  .case-detail-block {
    padding: 1rem;
  }

  .process-list,
  .useful-grid,
  .dashboard-grid,
  .case-detail-grid {
    grid-template-columns: 1fr;
  }

  .case-card-head {
    border-right: 0;
    border-bottom: 1px solid rgba(16, 35, 33, 0.1);
  }

  .architecture-flow {
    min-width: 980px;
  }

  .case-contact-inner {
    display: grid;
  }

  .btn {
    width: 100%;
  }
}

@media (max-width: 420px) {
  .hero-headline {
    font-size: 2.6rem;
  }

  .hero-summary {
    font-size: 1rem;
  }

  .hero-proof-list {
    display: grid;
  }

  .section-head h2 {
    font-size: 1.82rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}