:root {
  --bg: #f4f4f1;
  --surface: #ffffff;
  --surface-subtle: #eeeeea;
  --text: #151515;
  --muted: #686862;
  --faint: #92928b;
  --line: #d7d7d0;
  --line-strong: #b8b8b0;
  --accent: #315efb;
  --accent-hover: #244bd6;
  --accent-soft: #e9edff;
  --max: 1180px;
  --radius: 10px;
}

html[data-theme="dark"] {
  --bg: #111317;
  --surface: #171a1f;
  --surface-subtle: #1d2026;
  --text: #f2f2ef;
  --muted: #a5a59e;
  --faint: #777872;
  --line: #2c3037;
  --line-strong: #454a53;
  --accent: #7b9cff;
  --accent-hover: #9ab1ff;
  --accent-soft: #1c2850;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

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

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

::selection {
  color: #fff;
  background: var(--accent);
}

.site-header {
  width: min(calc(100% - 36px), var(--max));
  min-height: 64px;
  margin: 0 auto;
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(244, 244, 241, 0.92);
  backdrop-filter: blur(12px);
}

html[data-theme="dark"] .site-header {
  background: rgba(17, 19, 23, 0.92);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.brand-mark {
  width: 31px;
  height: 31px;
  display: grid;
  place-items: center;
  border: 1px solid var(--text);
  border-radius: 50%;
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 25px;
}

.nav a {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 550;
  transition: color 150ms ease;
}

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

.theme-toggle {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: border-color 150ms ease, background 150ms ease;
}

.theme-toggle:hover {
  border-color: var(--line-strong);
  background: var(--surface);
}

.section {
  width: min(calc(100% - 36px), var(--max));
  margin: 0 auto;
  padding: 104px 0;
}

.hero {
  min-height: calc(100vh - 64px);
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  align-items: center;
  gap: 80px;
  padding-top: 74px;
  padding-bottom: 74px;
}

.eyebrow,
.project-kicker {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 900px;
  margin: 24px 0 28px;
  font-size: clamp(3.2rem, 7vw, 6.35rem);
  line-height: 0.95;
  letter-spacing: -0.062em;
  font-weight: 720;
}

h2 {
  margin: 12px 0 0;
  font-size: clamp(2.15rem, 4.2vw, 4rem);
  line-height: 1;
  letter-spacing: -0.05em;
  font-weight: 690;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.1rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-weight: 650;
}

.hero-text {
  max-width: 700px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.16rem);
  line-height: 1.7;
}

.hero-text strong {
  color: var(--text);
  font-weight: 650;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.button {
  min-height: 43px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  font-size: 0.82rem;
  font-weight: 650;
  transition: background 150ms ease, color 150ms ease, border-color 150ms ease;
}

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

.button.primary:hover {
  border-color: var(--accent-hover);
  background: var(--accent-hover);
}

.button.secondary {
  background: transparent;
}

.button.secondary:hover {
  border-color: var(--text);
}

.tech-line {
  max-width: 720px;
  margin-top: 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  color: var(--faint);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.72rem;
}

.tech-line span {
  display: inline-flex;
  align-items: center;
}

.tech-line span:not(:last-child)::after {
  content: "/";
  margin: 0 10px;
  color: var(--line-strong);
}

.hero-card {
  padding-left: 30px;
  border-left: 1px solid var(--line);
}

.profile-top {
  display: flex;
  gap: 16px;
  align-items: center;
  padding-bottom: 24px;
}

.profile-top img {
  flex: 0 0 auto;
  border-radius: 50%;
  filter: grayscale(100%);
}

.role-label {
  margin: 0 0 4px;
  color: var(--accent) !important;
  font-size: 0.71rem !important;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.045em;
}

.profile-top h2 {
  margin: 0 0 3px;
  font-size: 1.15rem;
  line-height: 1.2;
  letter-spacing: -0.025em;
  font-weight: 680;
}

.profile-top p {
  margin: 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.stat-list {
  margin: 0 0 24px;
  border-top: 1px solid var(--line);
}

.stat-list div {
  padding: 12px 0;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--line);
}

.stat-list dt {
  color: var(--muted);
  font-size: 0.78rem;
}

.stat-list dd {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 680;
  font-variant-numeric: tabular-nums;
}

.plain-link,
.project-link,
.live-links a,
.text-button {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 650;
}

.plain-link:hover,
.project-link:hover,
.live-links a:hover,
.text-button:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.focus-strip {
  padding: 22px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px 30px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.73rem;
  font-weight: 600;
  letter-spacing: 0.015em;
}

.section-heading {
  margin-bottom: 44px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 360px);
  gap: 50px;
  align-items: end;
}

.section-heading > div {
  max-width: 780px;
}

.section-heading > p {
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.65;
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  border-top: 1px solid var(--line);
}

.feature-card {
  grid-column: span 6;
  min-height: 315px;
  padding: 26px 24px 24px 0;
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid var(--line);
}

.feature-card:nth-child(odd) {
  padding-right: 34px;
  border-right: 1px solid var(--line);
}

.feature-card:nth-child(even) {
  padding-left: 34px;
}

.feature-card.large,
.feature-card.small {
  grid-column: span 6;
}

.card-top,
.project-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.repo-visibility,
.live-status {
  color: var(--faint);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.68rem;
  font-weight: 500;
}

.feature-card h3 {
  max-width: 90%;
  margin: 44px 0 14px;
  font-size: clamp(1.55rem, 2.3vw, 2.15rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.feature-card > p {
  max-width: 570px;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.65;
}

.feature-footer {
  margin-top: auto;
  padding-top: 26px;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 22px;
}

.project-tags,
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  color: var(--faint);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.67rem;
}

.project-tags span,
.chips span {
  display: inline-flex;
  align-items: center;
}

.project-tags span:not(:last-child)::after,
.chips span:not(:last-child)::after {
  content: "·";
  margin: 0 7px;
  color: var(--line-strong);
}

.live-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.live-card {
  min-height: 190px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: transparent;
  transition: background 150ms ease;
}

.live-card:hover {
  background: var(--surface);
}

.live-card h3 {
  margin: 28px 0 7px;
}

.live-card p {
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 0.78rem;
}

.live-links {
  margin-top: auto;
  display: flex;
  gap: 14px;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.capability-grid article {
  min-height: 260px;
  padding: 26px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.cap-index {
  display: block;
  margin-bottom: 52px;
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.7rem;
  font-weight: 650;
}

.capability-grid p {
  max-width: 500px;
  color: var(--muted);
  font-size: 0.83rem;
  line-height: 1.65;
}

.archive-toolbar {
  margin-bottom: 22px;
  display: grid;
  grid-template-columns: minmax(250px, 1fr) 2fr;
  gap: 22px;
  align-items: start;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 0 12px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--surface);
  color: var(--faint);
}

.search-box:focus-within {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

.search-box input {
  width: 100%;
  height: 42px;
  border: 0;
  outline: 0;
  color: var(--text);
  background: transparent;
  font-size: 0.8rem;
}

.search-box input::placeholder {
  color: var(--faint);
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.filter-button {
  min-height: 34px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.7rem;
  font-weight: 600;
}

.filter-button:hover {
  border-color: var(--line-strong);
  color: var(--text);
}

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

.archive-meta {
  margin: 4px 0 15px;
  display: flex;
  justify-content: space-between;
  color: var(--faint);
  font-size: 0.72rem;
}

.text-button {
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.archive-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.archive-card {
  min-height: 180px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: transparent;
  transition: background 150ms ease;
}

.archive-card:hover {
  background: var(--surface);
}

.archive-card h3 {
  margin: 28px 0 7px;
  font-size: 0.95rem;
  overflow-wrap: anywhere;
}

.archive-card p {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 0.74rem;
  line-height: 1.55;
}

.archive-card .project-tags {
  margin-top: auto;
}

.reference-card {
  opacity: 0.58;
}

.about {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 90px;
  align-items: start;
}

.about-copy p {
  max-width: 700px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.75;
}

.principles {
  border-top: 1px solid var(--line);
}

.principles div {
  min-height: 64px;
  padding: 16px 0;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 10px;
  align-items: baseline;
  border-bottom: 1px solid var(--line);
}

.principles strong {
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.68rem;
}

.principles span {
  font-size: 0.86rem;
  font-weight: 560;
}

.contact {
  margin-bottom: 80px;
  padding: 46px 0;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  border-top: 1px solid var(--text);
  border-bottom: 1px solid var(--line);
}

.contact h2 {
  max-width: 720px;
  font-size: clamp(2rem, 4vw, 3.7rem);
}

footer {
  width: min(calc(100% - 36px), var(--max));
  margin: 0 auto;
  padding: 28px 0 42px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 0.72rem;
}

footer a:hover {
  color: var(--text);
}

@media (max-width: 980px) {
  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
    gap: 55px;
    padding-top: 100px;
    padding-bottom: 90px;
  }

  .hero-card {
    max-width: 620px;
    padding-left: 0;
    padding-top: 28px;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .focus-strip {
    justify-content: flex-start;
  }

  .live-grid,
  .archive-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .archive-toolbar {
    grid-template-columns: 1fr;
  }

  .filter-row {
    justify-content: flex-start;
  }

  .about {
    grid-template-columns: 1fr;
    gap: 50px;
  }
}

@media (max-width: 720px) {
  .site-header {
    width: min(calc(100% - 24px), var(--max));
    gap: 14px;
  }

  .brand > span:last-child {
    display: none;
  }

  .nav {
    gap: 14px;
  }

  .nav a {
    font-size: 0.72rem;
  }

  .section {
    width: min(calc(100% - 24px), var(--max));
    padding: 76px 0;
  }

  .hero {
    padding-top: 76px;
    padding-bottom: 72px;
  }

  h1 {
    font-size: clamp(3.2rem, 16vw, 5rem);
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 16px;
    align-items: start;
  }

  .feature-card,
  .feature-card.large,
  .feature-card.small {
    grid-column: 1 / -1;
    min-height: 280px;
    padding: 24px 0;
    border-right: 0 !important;
  }

  .feature-card:nth-child(even) {
    padding-left: 0;
  }

  .feature-card:nth-child(odd) {
    padding-right: 0;
  }

  .feature-card h3 {
    margin-top: 32px;
  }

  .feature-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .live-grid,
  .capability-grid,
  .archive-grid {
    grid-template-columns: 1fr;
  }

  .archive-meta {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

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

  footer {
    width: min(calc(100% - 24px), var(--max));
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .nav a:nth-child(3) {
    display: none;
  }

  .profile-top {
    align-items: flex-start;
  }

  .tech-line {
    line-height: 2;
  }

  .focus-strip {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}