:root {
  --paper: #f3efe4;
  --paper-bright: #faf8f1;
  --paper-hover: #e9e3d7;
  --ink: #101516;
  --muted: #60645e;
  --line: rgba(16, 21, 22, 0.2);
  --blue: #3f5eff;
  --red: #ff4d2e;
  --lime: #c4f044;
  --yellow: #f6c945;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(rgba(16, 21, 22, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 21, 22, 0.025) 1px, transparent 1px),
    var(--paper);
  background-size: 28px 28px;
  color: var(--ink);
  font-family: "Bricolage Grotesque", "PingFang SC", sans-serif;
  text-rendering: optimizeLegibility;
}

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

.skip-link {
  position: fixed;
  z-index: 20;
  left: 1rem;
  top: 1rem;
  transform: translateY(-150%);
  background: var(--ink);
  color: var(--paper);
  padding: 0.75rem 1rem;
}

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

.topbar,
main,
footer {
  width: min(1480px, calc(100% - 64px));
  margin-inline: auto;
}

.topbar {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--ink);
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.wordmark-mark {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.08em;
}

.wordmark-meta,
.system-state,
.eyebrow,
.project-status,
.project-domain,
.note-index,
.directory-note,
footer {
  font-family: "DM Mono", monospace;
  font-size: 0.68rem;
  line-height: 1.5;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.wordmark-meta {
  padding-left: 1rem;
  border-left: 1px solid var(--line);
  color: var(--muted);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.system-state {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.system-state i,
.project-status i {
  width: 7px;
  height: 7px;
  display: inline-block;
  border-radius: 50%;
  background: #3fb950;
  box-shadow: 0 0 0 4px rgba(63, 185, 80, 0.12);
}

.profile-link {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--ink);
  font-size: 0.78rem;
  font-weight: 600;
  transition: background-color 180ms ease, color 180ms ease;
}

.profile-link:hover,
.profile-link:focus-visible {
  background: var(--ink);
  color: var(--paper);
}

.hero {
  padding: clamp(1.25rem, 2.4vw, 2.25rem) 0;
}

.eyebrow {
  margin: 0 0 0.75rem;
  color: var(--muted);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 2.15fr) minmax(260px, 0.75fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: end;
}

h1 {
  max-width: 1050px;
  margin: 0;
  font-size: clamp(2.5rem, 4.5vw, 5rem);
  font-weight: 550;
  line-height: 0.87;
  letter-spacing: -0.072em;
}

h1 em {
  font-family: "Newsreader", "Songti SC", serif;
  font-weight: 400;
  letter-spacing: -0.06em;
}

.hero-note {
  display: grid;
  gap: 0.5rem;
  align-self: end;
  padding-bottom: 0.45rem;
}

.note-index {
  color: var(--red);
}

.hero-note p {
  margin: 0;
  font-family: "Newsreader", "Songti SC", serif;
  font-size: clamp(0.9rem, 1.1vw, 1.05rem);
  line-height: 1.4;
}

.hero-rule {
  margin-top: clamp(1rem, 1.8vw, 1.5rem);
  height: 5px;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.hero-rule span {
  display: block;
  width: 30%;
  height: 100%;
  background: var(--ink);
  animation: rule-in 900ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.projects {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}

.project {
  --accent: var(--paper-hover);
  position: relative;
  min-height: clamp(220px, 27vh, 285px);
  overflow: hidden;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  grid-template-rows: 1fr auto;
  gap: 0.75rem;
  padding: clamp(0.9rem, 1.5vw, 1.35rem);
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  isolation: isolate;
  transition: color 220ms ease;
}

.project::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: auto 0 0;
  height: 0;
  background: var(--accent);
  transition: height 420ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.project:hover::before,
.project:focus-visible::before {
  height: 100%;
}

.project:focus-visible {
  outline: 4px solid var(--ink);
  outline-offset: -8px;
}

.project--paper {
  --accent: var(--paper-hover);
}

.project--uris {
  --accent: var(--paper-hover);
}

.project--voca {
  --accent: var(--paper-hover);
}

.project-number {
  font-family: "Newsreader", serif;
  font-size: 1.35rem;
  font-style: italic;
  line-height: 1;
}

.project-copy {
  position: relative;
  z-index: 2;
  max-width: calc(100% - 125px);
}

.project-status {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: clamp(1rem, 2vw, 1.75rem);
}

.project h2 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.45rem, 2.2vw, 2.35rem);
  line-height: 0.95;
  letter-spacing: -0.055em;
}

.project p {
  max-width: 36ch;
  margin: 0 0 0.75rem;
  font-family: "Newsreader", "Songti SC", serif;
  font-size: clamp(0.82rem, 1vw, 0.98rem);
  line-height: 1.38;
}

.project-domain {
  display: inline-block;
  padding-top: 0.4rem;
  border-top: 1px solid currentColor;
}

.project-icon {
  position: absolute;
  z-index: 1;
  right: clamp(0.75rem, 1.4vw, 1.4rem);
  top: clamp(2.4rem, 4vw, 3.5rem);
  width: clamp(88px, 8.5vw, 125px);
  height: auto;
  mix-blend-mode: multiply;
  transform: rotate(4deg);
  transition: transform 450ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.project:nth-child(even) .project-icon {
  transform: rotate(-4deg);
}

.project:hover .project-icon,
.project:focus-visible .project-icon {
  transform: rotate(0) translate(-0.75rem, -0.5rem) scale(1.04);
}

.project-open {
  grid-column: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  align-self: end;
  padding-top: 0.45rem;
  border-top: 1px solid currentColor;
  font-size: 0.68rem;
  font-weight: 650;
}

.project-open b {
  font-size: 1rem;
  font-weight: 400;
}

.paper-modes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.paper-mode {
  position: relative;
  display: grid;
  gap: 0.15rem;
  min-width: 0;
  padding: 0.5rem 1.8rem 0.5rem 0.55rem;
  border: 1px solid var(--line);
  background: rgba(250, 248, 241, 0.42);
  transition: background-color 180ms ease, border-color 180ms ease;
}

.paper-mode:hover,
.paper-mode:focus-visible {
  border-color: var(--ink);
  background: var(--paper-bright);
}

.paper-mode:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

.paper-mode strong {
  overflow: hidden;
  font-size: 0.78rem;
  line-height: 1.2;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.paper-mode small,
.mode-tag {
  overflow: hidden;
  font-family: "DM Mono", monospace;
  font-size: 0.54rem;
  line-height: 1.3;
  letter-spacing: 0.06em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.paper-mode small {
  color: var(--muted);
}

.mode-tag {
  color: var(--muted);
}

.mode-tag--ai {
  color: var(--red);
}

.paper-mode b {
  position: absolute;
  right: 0.55rem;
  bottom: 0.45rem;
  font-size: 0.85rem;
  font-weight: 400;
}

.directory-note {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding: 0.65rem 0 1rem;
  color: var(--muted);
}

.directory-note p {
  margin: 0;
}

kbd {
  min-width: 1.6em;
  display: inline-grid;
  place-items: center;
  padding: 0.05em 0.3em;
  border: 1px solid var(--line);
  background: var(--paper-bright);
  color: var(--ink);
  font: inherit;
}

footer {
  min-height: 46px;
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 2rem;
  align-items: center;
  border-top: 1px solid var(--ink);
}

footer p {
  margin: 0;
}

footer a {
  border-bottom: 1px solid var(--ink);
}

@keyframes rule-in {
  from { width: 0; }
}

@media (max-width: 900px) {
  .topbar,
  main,
  footer {
    width: min(100% - 32px, 720px);
  }

  .system-state {
    display: none;
  }

  .hero-grid,
  .projects {
    grid-template-columns: 1fr;
  }

  .hero-note {
    max-width: 520px;
  }

  .project {
    min-height: 350px;
  }

  .project-copy {
    max-width: calc(100% - 125px);
  }

  .project-icon {
    width: min(30vw, 125px);
  }

  .directory-note,
  footer {
    align-items: flex-start;
    flex-direction: column;
  }

  footer {
    grid-template-columns: 1fr;
    padding: 1.5rem 0;
  }
}

@media (max-width: 560px) {
  .topbar {
    min-height: 64px;
  }

  .wordmark-meta,
  .profile-link {
    display: none;
  }

  .hero {
    padding-top: 2rem;
  }

  h1 {
    font-size: clamp(2.4rem, 11.5vw, 3rem);
  }

  .project {
    min-height: 330px;
    grid-template-columns: 28px minmax(0, 1fr);
    padding: 1rem;
  }

  .project-status {
    margin-bottom: 6.5rem;
  }

  .project-icon {
    right: 0.4rem;
    top: 3.25rem;
    width: 112px;
  }

  .project-copy {
    max-width: 100%;
  }

  .project h2 {
    max-width: calc(100% - 110px);
  }

  .paper-intro {
    max-width: calc(100% - 105px);
  }

  .paper-modes {
    grid-template-columns: 1fr;
  }

  .directory-note {
    display: block;
  }

  .directory-note p + p {
    margin-top: 1rem;
  }
}

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

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