:root {
  --paper: #f4f3ef;
  --ink: #111111;
  --muted: #6f706d;
  --rule: #d5d5cf;
  --panel: #eaeae6;
  --panel-hover: #e3e3dd;
  --blue: #0b36b8;
  --sand: #d8c4a4;
  --gutter: clamp(1.25rem, 5vw, 5.5rem);
  --grid-gap: clamp(0.45rem, 0.75vw, 0.8rem);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  scroll-behavior: smooth;
}

body {
  min-width: 20rem;
  min-height: 100vh;
  margin: 0;
  background: var(--paper);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

button,
a {
  color: inherit;
  font: inherit;
}

input {
  transition:
    background-color 180ms ease,
    border-color 180ms ease;
}

input:focus {
  border-color: var(--blue);
  background-color: var(--panel);
  outline: none;
}

button {
  border: 0;
}

.page-shell {
  width: min(100%, 100rem);
  margin-inline: auto;
  padding: clamp(2.2rem, 5vw, 5.5rem) var(--gutter)
    clamp(3rem, 7vw, 7rem);
}

.hero {
  border-top: 1px solid var(--rule);
  padding-top: 0.85rem;
}

.hero-meta,
.page-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  line-height: 1.3;
  text-transform: uppercase;
}

.hero-meta span:first-child {
  color: var(--blue);
}

.footer-actions {
  display: inline-flex;
  align-items: center;
  gap: clamp(1.2rem, 2.4vw, 2.4rem);
}

.footer-github {
  color: var(--muted);
  text-decoration: none;
  transition:
    color 180ms ease,
    text-decoration-color 180ms ease;
}

.footer-github:hover {
  color: var(--blue);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.28rem;
}

.footer-github:focus-visible {
  color: var(--blue);
  outline: 2px solid var(--blue);
  outline-offset: 0.3rem;
}

h1 {
  max-width: none;
  margin: clamp(2.35rem, 4.4vw, 4.5rem) 0 0;
  font-family: "Arial Narrow", "Helvetica Neue", "PingFang SC",
    "Hiragino Sans GB", sans-serif;
  font-size: clamp(3.75rem, 8vw, 8.5rem);
  font-stretch: condensed;
  font-weight: 300;
  letter-spacing: -0.075em;
  line-height: 0.96;
  text-wrap: balance;
}

.navigation-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--grid-gap);
  margin-top: clamp(2.6rem, 5vw, 5.25rem);
}

.nav-card {
  position: relative;
  isolation: isolate;
  display: grid;
  min-width: 0;
  min-height: clamp(10rem, 12.75vw, 12rem);
  overflow: hidden;
  padding: clamp(1.2rem, 2vw, 2rem);
  background: var(--panel);
  text-decoration: none;
  transition:
    background-color 180ms ease,
    color 180ms ease,
    transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.nav-card::before {
  position: absolute;
  z-index: -1;
  top: 14%;
  right: 7%;
  width: 28%;
  aspect-ratio: 1;
  border: 1px solid currentColor;
  content: "";
  opacity: 0.17;
  transform: rotate(0deg);
  transition:
    opacity 180ms ease,
    transform 300ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.nav-card:nth-child(9n + 1)::before {
  border: 0;
  background-image: radial-gradient(currentColor 1px, transparent 1px);
  background-size: 10px 10px;
}

.nav-card:nth-child(9n + 2)::before {
  transform: rotate(45deg) scale(0.72);
}

.nav-card:nth-child(9n + 3)::before {
  border-radius: 50%;
  box-shadow:
    inset 0 0 0 18px var(--panel),
    inset 0 0 0 19px currentColor;
}

.nav-card:nth-child(9n + 4)::before {
  border: 0;
  background-image: repeating-linear-gradient(
    to bottom,
    currentColor 0 1px,
    transparent 1px 9px
  );
  transform: skewY(-10deg);
}

.nav-card:nth-child(9n + 5)::before {
  border-width: 1px 0 0 1px;
  background-image: linear-gradient(
    135deg,
    transparent 48%,
    currentColor 49% 50%,
    transparent 51%
  );
}

.nav-card:nth-child(9n + 6)::before {
  border-radius: 50% 50% 0 50%;
  transform: rotate(45deg);
}

.nav-card:nth-child(9n + 7)::before {
  border: 0;
  background-image: repeating-linear-gradient(
    to right,
    currentColor 0 1px,
    transparent 1px 10px
  );
}

.nav-card:nth-child(9n + 8)::before {
  border: 0;
  background: currentColor;
  clip-path: polygon(28% 16%, 84% 50%, 28% 84%);
}

.nav-card:nth-child(9n + 9)::before {
  border: 0;
  background:
    linear-gradient(currentColor 0 0) 0 0 / 27% 27%,
    linear-gradient(currentColor 0 0) 50% 0 / 27% 27%,
    linear-gradient(currentColor 0 0) 100% 0 / 27% 27%,
    linear-gradient(currentColor 0 0) 0 50% / 27% 27%,
    linear-gradient(currentColor 0 0) 50% 50% / 27% 27%,
    linear-gradient(currentColor 0 0) 100% 50% / 27% 27%,
    linear-gradient(currentColor 0 0) 0 100% / 27% 27%,
    linear-gradient(currentColor 0 0) 50% 100% / 27% 27%,
    linear-gradient(currentColor 0 0) 100% 100% / 27% 27%;
  background-repeat: no-repeat;
}

.card-index {
  align-self: start;
  font-size: clamp(2.7rem, 4.6vw, 4.6rem);
  font-weight: 300;
  letter-spacing: -0.07em;
  line-height: 0.88;
}

.card-copy {
  align-self: end;
  display: grid;
  gap: 0.22rem;
  width: fit-content;
}

.card-copy strong {
  font-size: clamp(1.15rem, 1.65vw, 1.6rem);
  font-weight: 600;
  letter-spacing: -0.025em;
}

.card-copy span {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.card-arrow {
  position: absolute;
  right: clamp(1.2rem, 2vw, 2rem);
  bottom: clamp(1.2rem, 2vw, 2rem);
  font-size: 1.6rem;
  font-weight: 300;
  line-height: 1;
  transition: transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.nav-card--accent {
  background: var(--blue);
  color: #ffffff;
}

.nav-card--accent .card-copy span {
  color: rgb(255 255 255 / 72%);
}

.nav-card:hover {
  z-index: 1;
  background: var(--panel-hover);
  transform: translateY(-3px);
}

.nav-card--accent:hover {
  background: #092f9f;
}

.nav-card:hover::before {
  opacity: 0.32;
  transform: rotate(8deg) scale(1.04);
}

.nav-card:hover .card-arrow {
  transform: translate(0.22rem, -0.22rem);
}

.nav-card:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 4px;
}

.nav-card--accent:focus-visible {
  outline: none;
}

.page-footer {
  margin-top: clamp(2.6rem, 4.5vw, 4.6rem);
  padding-top: 0.9rem;
  border-top: 1px solid var(--rule);
  font-weight: 500;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: clamp(2.5rem, 4.5vw, 4.8rem);
  color: var(--blue);
  font-size: 1rem;
  font-weight: 550;
  text-decoration: none;
}

.back-link span {
  font-size: 1.2em;
  transition: transform 180ms ease;
}

.back-link:hover span {
  transform: translateX(-0.25rem);
}

.back-link:focus-visible,
.tool-card:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 4px;
}

.tools-hero h1 {
  max-width: 100%;
  font-size: clamp(3.75rem, 7vw, 6rem);
  letter-spacing: -0.04em;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-auto-flow: row;
  grid-auto-rows: minmax(14rem, 1fr);
  gap: var(--grid-gap);
  margin-top: clamp(2.3rem, 4vw, 4.5rem);
}

.tool-card {
  position: relative;
  isolation: isolate;
  display: grid;
  min-width: 0;
  min-height: 14rem;
  overflow: hidden;
  padding: clamp(1.35rem, 2vw, 2.15rem);
  background: var(--panel);
  text-decoration: none;
  transition:
    background-color 180ms ease,
    color 180ms ease,
    transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.tool-card::before {
  position: absolute;
  z-index: -1;
  top: 18%;
  right: 9%;
  width: 30%;
  aspect-ratio: 1;
  content: "";
  opacity: 0.18;
  transition:
    opacity 180ms ease,
    transform 300ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.tool-card .card-copy {
  max-width: calc(100% - 2rem);
}

.tool-card .card-copy span {
  overflow-wrap: anywhere;
  text-transform: none;
}

.tool-card:nth-child(3n + 2)::before {
  border: 0;
  background-image: radial-gradient(currentColor 1px, transparent 1px);
  background-size: 10px 10px;
}

.tool-card:nth-child(3n + 3)::before {
  border: 1px solid currentColor;
  transform: rotate(45deg) scale(0.72);
}

.tool-card:nth-child(3n + 1)::before {
  border: 1px solid currentColor;
  border-radius: 50%;
}

.tool-card--feature {
  grid-column: span 2;
  background: var(--blue);
  color: #ffffff;
}

.tool-card--feature::before {
  top: auto;
  right: 5%;
  bottom: 8%;
  width: 48%;
  border: 1px solid currentColor;
  background: linear-gradient(
    135deg,
    transparent 49.6%,
    currentColor 49.8% 50.2%,
    transparent 50.4%
  );
  clip-path: polygon(0 0, 100% 0, 100% 100%);
}

.tool-card--feature .card-copy {
  align-self: end;
}

.tool-card--feature .card-copy span {
  color: rgb(255 255 255 / 76%);
}

.tool-card:hover {
  z-index: 1;
  background: var(--panel-hover);
  transform: translateY(-3px);
}

.tool-card--feature:hover {
  background: #092f9f;
}

.tool-card:hover::before {
  opacity: 0.34;
  transform: translateY(-0.2rem) rotate(4deg);
}

.tool-card:hover .card-arrow {
  transform: translate(0.22rem, -0.22rem);
}

.tool-card--feature:focus-visible {
  outline-color: var(--ink);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--grid-gap);
  margin-top: clamp(2.3rem, 4vw, 4.5rem);
}

.portfolio-card {
  min-height: clamp(18rem, 28vw, 28rem);
}

.portfolio-card.tool-card--feature {
  grid-column: auto;
}

.search-hero h1 {
  font-size: clamp(4.5rem, 8vw, 7.5rem);
  letter-spacing: -0.055em;
}

.search-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) clamp(7.5rem, 11vw, 10rem);
  gap: var(--grid-gap);
  margin-top: clamp(2.3rem, 4vw, 4.5rem);
}

.search-form input,
.search-form button {
  min-height: clamp(4.25rem, 5vw, 5.25rem);
  border: 1px solid #aeadA7;
  border-radius: 0;
}

.search-form input {
  min-width: 0;
  padding: 1.2rem clamp(1.25rem, 2.3vw, 2.2rem);
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: clamp(1.2rem, 1.65vw, 1.65rem);
  outline: none;
  caret-color: var(--blue);
  -webkit-appearance: none;
  appearance: none;
}

.search-form input::placeholder {
  color: var(--muted);
  opacity: 1;
}

.search-form input:focus {
  border-color: var(--blue);
  background-color: var(--panel);
}

.search-form button {
  padding: 1rem;
  border-color: var(--blue);
  background: var(--blue);
  color: #ffffff;
  cursor: pointer;
  font-size: clamp(1rem, 1.35vw, 1.3rem);
  font-weight: 550;
  transition:
    background-color 180ms ease,
    transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.search-form button:hover {
  background: #092f9f;
  transform: translateY(-2px);
}

.search-form button:focus-visible,
.search-result:focus-visible,
.search-fallback:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 4px;
}

.search-form button:focus-visible,
.search-result--feature:focus-visible {
  outline-color: var(--ink);
}

.search-note {
  margin: 0.9rem 0 0;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.6;
}

.search-results-section {
  margin-top: clamp(2.8rem, 5.2vw, 5.5rem);
}

.search-results-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: clamp(1.2rem, 2vw, 1.8rem);
}

.search-results-header h2 {
  margin: 0;
  font-size: clamp(1.5rem, 2.2vw, 2.2rem);
  font-weight: 500;
  letter-spacing: -0.035em;
}

.search-results-header span {
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  white-space: nowrap;
}

.search-results-grid {
  display: grid;
  grid-template-columns: minmax(17rem, 0.9fr) minmax(24rem, 1.45fr);
  grid-auto-flow: row;
  grid-auto-rows: minmax(8.5rem, auto);
  gap: var(--grid-gap);
}

.search-result {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: clamp(3.5rem, 5vw, 5.5rem) minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(0.9rem, 1.8vw, 1.8rem);
  min-width: 0;
  min-height: 8.5rem;
  overflow: hidden;
  padding: clamp(1.2rem, 2vw, 2rem);
  background: var(--panel);
  text-decoration: none;
  transition:
    background-color 180ms ease,
    color 180ms ease,
    transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.search-result__index {
  align-self: start;
  font-size: clamp(2.5rem, 4.3vw, 4.1rem);
  font-weight: 300;
  letter-spacing: -0.07em;
  line-height: 0.92;
}

.search-result__copy {
  display: grid;
  gap: 0.3rem;
  min-width: 0;
}

.search-result__category {
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.search-result__title {
  font-size: clamp(1.15rem, 1.6vw, 1.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.search-result__description,
.search-result__domain {
  overflow: hidden;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.5;
  text-overflow: ellipsis;
}

.search-result__domain {
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.035em;
  white-space: nowrap;
}

.search-result__arrow {
  align-self: end;
  font-size: 1.4rem;
  line-height: 1;
  transition: transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.search-result--feature {
  grid-row: span 3;
  grid-template-columns: 1fr;
  grid-template-rows: auto 1fr auto;
  align-items: start;
  min-height: 27rem;
  background: var(--blue);
  color: #ffffff;
}

.search-result--feature::before {
  position: absolute;
  right: clamp(1.5rem, 3vw, 3rem);
  bottom: clamp(1.5rem, 3vw, 3rem);
  width: min(45%, 12rem);
  aspect-ratio: 1.55;
  background-image: radial-gradient(rgb(255 255 255 / 88%) 1.2px, transparent 1.2px);
  background-size: 18px 18px;
  content: "";
  opacity: 0.75;
}

.search-result--feature .search-result__index {
  font-size: clamp(4rem, 7vw, 6.5rem);
}

.search-result--feature .search-result__copy {
  align-self: end;
  max-width: 75%;
}

.search-result--feature .search-result__category,
.search-result--feature .search-result__description,
.search-result--feature .search-result__domain {
  color: rgb(255 255 255 / 76%);
}

.search-result--feature .search-result__title {
  font-size: clamp(1.6rem, 2.6vw, 2.5rem);
  font-weight: 500;
}

.search-result--feature .search-result__arrow {
  position: absolute;
  right: clamp(1.35rem, 2vw, 2rem);
  top: clamp(1.35rem, 2vw, 2rem);
}

.search-result--feature:only-child {
  grid-column: 1 / -1;
  min-height: 18rem;
}

.search-result:hover {
  z-index: 1;
  background: var(--panel-hover);
  transform: translateY(-3px);
}

.search-result--feature:hover {
  background: #092f9f;
}

.search-result:hover .search-result__arrow {
  transform: translate(0.2rem, -0.2rem);
}

.search-fallback {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 4.5rem;
  margin-top: var(--grid-gap);
  padding: 1rem clamp(1.25rem, 2vw, 2rem);
  border: 1px solid #aeadA7;
  text-decoration: none;
  transition:
    border-color 180ms ease,
    color 180ms ease;
}

.search-fallback strong {
  font-size: 1rem;
  font-weight: 550;
}

.search-fallback span {
  font-size: 1.5rem;
  transition: transform 180ms ease;
}

.search-fallback:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.search-fallback:hover span {
  transform: translateX(0.25rem);
}

.search-noscript {
  margin: 2rem 0 0;
  padding: 1rem;
  border: 1px solid var(--rule);
  line-height: 1.6;
}

[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 56rem) {
  .navigation-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .nav-card {
    min-height: 11rem;
  }

  .tools-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: minmax(12rem, auto);
  }

  .tool-card {
    min-height: 12rem;
  }

  .tool-card--feature {
    grid-column: span 2;
    min-height: 16rem;
  }

  .portfolio-card,
  .portfolio-card.tool-card--feature {
    grid-column: auto;
    min-height: 18rem;
  }

  .search-results-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: auto;
  }

  .search-result,
  .search-result--feature,
  .search-result--feature:only-child {
    grid-column: auto;
    grid-row: auto;
    min-height: 10rem;
  }

  .search-result--feature {
    min-height: 17rem;
  }
}

@media (max-width: 40rem) {
  .page-shell {
    padding-top: 1.4rem;
  }

  .hero {
    padding-top: 0.75rem;
  }

  .hero-meta,
  .page-footer {
    font-size: 0.65rem;
    letter-spacing: 0.12em;
  }

  h1 {
    max-width: 100%;
    font-size: clamp(3.25rem, 17vw, 5.2rem);
    letter-spacing: -0.08em;
  }

  .navigation-grid {
    grid-template-columns: 1fr;
    gap: 0.55rem;
    margin-top: 2.2rem;
  }

  .nav-card {
    min-height: 9.5rem;
  }

  .page-footer {
    margin-top: 2.2rem;
  }

  .back-link {
    margin-bottom: 2rem;
  }

  .tools-hero h1 {
    font-size: clamp(3.2rem, 16vw, 4.6rem);
    letter-spacing: -0.04em;
  }

  .tools-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: auto;
    gap: 0.55rem;
    margin-top: 2rem;
  }

  .tool-card,
  .tool-card--feature {
    grid-column: auto;
    min-height: 10rem;
  }

  .tool-card--feature {
    min-height: 14rem;
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: 0.55rem;
    margin-top: 2rem;
  }

  .portfolio-card,
  .portfolio-card.tool-card--feature {
    min-height: 13rem;
  }

  .search-hero h1 {
    font-size: clamp(4rem, 22vw, 6rem);
  }

  .search-form {
    grid-template-columns: 1fr;
    margin-top: 2rem;
  }

  .search-form input,
  .search-form button {
    min-height: 4rem;
  }

  .search-note {
    margin-top: 0.75rem;
  }

  .search-results-section {
    margin-top: 2.8rem;
  }

  .search-results-header {
    align-items: flex-end;
    margin-bottom: 1rem;
  }

  .search-results-header h2 {
    font-size: 1.45rem;
  }

  .search-result {
    grid-template-columns: 3rem minmax(0, 1fr) auto;
    gap: 0.8rem;
    min-height: 9rem;
    padding: 1.2rem;
  }

  .search-result--feature {
    grid-template-columns: 1fr;
    min-height: 14rem;
  }

  .search-result--feature .search-result__copy {
    max-width: 72%;
  }

  .search-result--feature::before {
    right: 1rem;
    bottom: 1rem;
    width: 34%;
    opacity: 0.38;
  }
}

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

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