:root {
  color-scheme: light;
  --bg: #edf2f8;
  --rail-bg: #e3ebf4;
  --surface: #f8fafd;
  --border: #c9d5e3;
  --ink: #14202f;
  --muted: #44556a;
  --accent: #1f57bd;
  --accent-ink: #f4f8fd;
  --dot: color-mix(in srgb, var(--accent) 22%, transparent);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --radius: 8px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.5;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--ink);
}

:is(a, button):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  inset-inline-start: 1rem;
  inset-block-start: -3.5rem;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
  transition: inset-block-start 0.15s ease;
  z-index: 10;
}

.skip-link:focus {
  inset-block-start: 1rem;
}

.frame {
  min-height: 100dvh;
  display: grid;
  grid-template-columns: 1fr;
}

@media (min-width: 960px) {
  .frame {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}

/* Identity rail. Observability nod: a dot-matrix field, the texture of a
   metrics scatterplot, faded toward the content column. */
.rail {
  position: relative;
  isolation: isolate;
  background: var(--rail-bg);
  border-block-end: 1px solid var(--border);
  padding: clamp(2rem, 5vw, 4rem) clamp(1.5rem, 4vw, 3.5rem);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.rail::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: radial-gradient(var(--dot) 1.5px, transparent 1.5px);
  background-size: 26px 26px;
  mask-image: linear-gradient(115deg, transparent 32%, black 78%);
  -webkit-mask-image: linear-gradient(115deg, transparent 32%, black 78%);
}

@media (min-width: 960px) {
  .rail {
    position: sticky;
    inset-block-start: 0;
    block-size: 100dvh;
    border-block-end: 0;
    border-inline-end: 1px solid var(--border);
    justify-content: center;
  }
}

.role {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin: 0;
}

.name {
  margin: 0;
  font-size: clamp(3.25rem, 8.5vw, 6rem);
  line-height: 0.94;
  letter-spacing: -0.04em;
  font-weight: 750;
}

.name-line {
  display: block;
}

.name-line + .name-line {
  margin-inline-start: clamp(1.5rem, 4vw, 3.5rem);
}

.dot {
  color: var(--accent);
}

.tagline {
  max-width: 38ch;
  color: var(--muted);
  font-size: 1.05rem;
  margin: 0;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.cta {
  display: inline-block;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  transition: transform 0.15s var(--ease-out), background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.cta:active {
  transform: scale(0.97);
}

.cta-primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.cta-primary:hover {
  background: color-mix(in srgb, var(--accent) 88%, black);
}

.cta-secondary {
  color: var(--ink);
  border: 1px solid var(--border);
  background: var(--surface);
}

.cta-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.rail-tabs {
  margin-block-start: 1rem;
}

@media (max-width: 959.98px) {
  .rail-tabs {
    position: sticky;
    inset-block-start: 0;
    z-index: 4;
    margin-inline: calc(-1 * clamp(1.5rem, 4vw, 3.5rem));
    padding-inline: clamp(1.5rem, 4vw, 3.5rem);
    padding-block: 0.75rem;
    background: var(--rail-bg);
    border-block-end: 1px solid var(--border);
  }
}

[role="tablist"] {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.35rem;
}

[role="tab"] {
  appearance: none;
  border: 0;
  background: transparent;
  font: inherit;
  font-weight: 650;
  font-size: clamp(1.35rem, 2.4vw, 1.8rem);
  letter-spacing: -0.02em;
  color: var(--muted);
  padding: 0.35rem 0.75rem 0.35rem 0;
  min-block-size: 44px;
  border-inline-start: 3px solid transparent;
  padding-inline-start: 0.85rem;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, transform 0.2s var(--ease-out);
}

[role="tab"]:hover {
  color: var(--accent);
  transform: translateX(3px);
}

[role="tab"][aria-selected="true"] {
  color: var(--ink);
  border-inline-start-color: var(--accent);
}

.content {
  padding: clamp(2.5rem, 6vw, 5.5rem) clamp(1.5rem, 5vw, 4.5rem) 2rem;
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

@media (min-width: 960px) {
  .content {
    padding-block-start: clamp(4rem, 12vh, 8rem);
  }
}

.panel {
  scroll-margin-block-start: 1.5rem;
  flex: 1;
}

.panel h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  letter-spacing: -0.02em;
  margin: 0 0 0.85rem;
}

.current-role {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.current-company {
  color: var(--ink);
}

.duty-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 52ch;
  display: grid;
  gap: 1rem;
}

.duty-list li {
  padding: 1.1rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  box-shadow: 0 6px 20px -16px color-mix(in srgb, var(--accent) 35%, transparent);
}

.duty-list li:nth-child(2) {
  margin-inline-start: clamp(0rem, 5vw, 3.5rem);
}

.faq {
  margin-block-start: 2rem;
  display: grid;
  gap: 0.6rem;
  max-width: 52ch;
}

.faq details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1.1rem;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--ink);
  min-block-size: 24px;
}

.faq summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.faq details[open] summary {
  margin-block-end: 0.5rem;
}

.faq p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.clients-intro {
  color: var(--muted);
  max-width: 55ch;
  margin: 0 0 1rem;
}

.service-tags,
.skill-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 2rem;
  padding: 0;
}

.service-tags li,
.skill-tags li {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
}

.client-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

.client {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem 1.6rem;
  max-width: 46rem;
  box-shadow: 0 1px 2px color-mix(in srgb, var(--accent) 6%, transparent),
    0 10px 28px -20px color-mix(in srgb, var(--accent) 35%, transparent);
  transition: transform 0.25s var(--ease-out), border-color 0.25s ease;
}

.client:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
}

@media (min-width: 960px) {
  .client:nth-child(2) {
    margin-inline-start: clamp(1rem, 6vw, 4rem);
  }

  .client:nth-child(3) {
    margin-inline-start: clamp(2rem, 12vw, 8rem);
  }
}

.client h3 {
  margin: 0 0 0.4rem;
  font-size: 1.1rem;
}

.client h3 a {
  display: inline-block;
  text-decoration: none;
  color: var(--ink);
  padding-block: 0.2rem;
  transition: color 0.2s ease;
}

.client h3 a:hover {
  color: var(--accent);
}

.client p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer {
  margin-block-start: 4rem;
  padding-block-start: 1.5rem;
  border-block-start: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
}

.faq-page {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.faq-page-header {
  padding: 1.5rem clamp(1.5rem, 4vw, 3.5rem);
  border-block-end: 1px solid var(--border);
}

.faq-back {
  font-weight: 700;
  text-decoration: none;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.faq-page-content {
  flex: 1;
  max-width: 640px;
  inline-size: 100%;
  margin-inline: auto;
  padding: clamp(2.5rem, 6vw, 4rem) clamp(1.5rem, 4vw, 3.5rem);
}

.faq-page-content h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  letter-spacing: -0.02em;
  margin: 0 0 1.5rem;
}

.faq-back-link {
  margin-block-start: 2rem;
}

.faq-back-link a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.faq-back-link a:hover {
  text-decoration: underline;
}

.faq-page-footer {
  padding-inline: clamp(1.5rem, 4vw, 3.5rem);
  padding-block-end: 2rem;
}

.profile-links {
  list-style: none;
  display: flex;
  gap: 1rem;
  margin: 0 0 0.75rem;
  padding: 0;
}

.profile-links a {
  display: inline-block;
  text-decoration: none;
  color: var(--muted);
  padding: 0.5rem 0.4rem;
  transition: color 0.2s ease;
}

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

@media (prefers-reduced-motion: no-preference) {
  .rail > * {
    animation: rise 0.7s var(--ease-out) both;
  }

  .rail > .role { animation-delay: 0.05s; }
  .rail > .name { animation-delay: 0.12s; }
  .rail > .tagline { animation-delay: 0.2s; }
  .rail > .cta-row { animation-delay: 0.28s; }
  .rail > .rail-tabs { animation-delay: 0.36s; }

  .panel.is-entering {
    animation: panel-in 0.4s var(--ease-out) both;
  }

  .panel.is-entering [data-stagger] {
    animation: rise 0.5s var(--ease-out) both;
  }

  .panel.is-entering [data-stagger]:nth-child(1) { animation-delay: 0.08s; }
  .panel.is-entering [data-stagger]:nth-child(2) { animation-delay: 0.16s; }
  .panel.is-entering [data-stagger]:nth-child(3) { animation-delay: 0.24s; }

  .client.is-visible:hover {
    transform: translateY(-4px);
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
}

@keyframes panel-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}