:root {
  --ink: #17231d;
  --muted: #657068;
  --cream: #f3f0e7;
  --paper: #fbfaf6;
  --line: #d9ddd5;
  --green: #173e2d;
  --green-2: #245a42;
  --mint: #c7ead5;
  --orange: #f07645;
  --orange-soft: #f9d8c9;
  --blue-soft: #dce8f4;
  --shadow: 0 14px 40px rgba(30, 48, 39, .08);
  --field: #fff;
  --hover: #fff;
  --glass: rgba(251, 250, 246, .94);
  color-scheme: light;
}

html[data-theme="dark"] {
  --ink: #e8eee9;
  --muted: #93a198;
  --cream: #0e1511;
  --paper: #151f19;
  --line: #2b3b32;
  --green: #173e2d;
  --green-2: #93d8ad;
  --mint: #b9e4c9;
  --orange: #ef7c4f;
  --orange-soft: #d69a7f;
  --blue-soft: #29465e;
  --shadow: 0 16px 45px rgba(0, 0, 0, .24);
  --field: #1a261f;
  --hover: #1b2921;
  --glass: rgba(21, 31, 25, .94);
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html {
  scroll-behavior: smooth;
  background: var(--cream);
}

body {
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  background:
    linear-gradient(rgba(23, 62, 45, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 62, 45, .035) 1px, transparent 1px),
    var(--cream);
  background-size: 48px 48px;
  font: 15px/1.55 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button, input, select { font: inherit; }
a { color: inherit; text-decoration: none; }
button, select, input { outline: none; }

.shell {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.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;
}

.nav {
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(23, 35, 29, .15);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 14px;
  font-weight: 750;
  letter-spacing: -.015em;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: white;
  background: var(--green);
  border-radius: 9px 2px 9px 2px;
  font-size: 12px;
  letter-spacing: -.06em;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 13px;
  font-weight: 650;
}

.nav__links > a:first-child:hover { color: var(--orange); }

.nav__controls,
.lang-switch {
  display: flex;
  align-items: center;
}

.nav__controls { gap: 10px; }

.lang-switch {
  height: 32px;
  padding: 3px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 100px;
}

.lang-option {
  height: 24px;
  padding: 0 8px;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 100px;
  cursor: pointer;
  font-size: 10px;
  font-weight: 800;
}

.lang-option.is-active {
  color: white;
  background: var(--green);
}

.theme-toggle {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  padding: 0;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 50%;
  cursor: pointer;
}

.theme-toggle svg {
  width: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.theme-toggle__moon { display: none; }
html[data-theme="dark"] .theme-toggle__sun { display: none; }
html[data-theme="dark"] .theme-toggle__moon { display: block; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 750;
  transition: transform .2s ease, background .2s ease;
}

.button:hover { transform: translateY(-2px); }
.button svg { width: 17px; fill: currentColor; }
.button--dark { color: white; background: var(--green); }
.button--dark:hover { background: var(--green-2); }
.button--accent { color: #211d18; background: var(--orange); border: 1px solid var(--orange); }
.button--ghost {
  color: #fff;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, .32);
}
.button--ghost:hover {
  background: rgba(255, 255, 255, .1);
  border-color: rgba(255, 255, 255, .55);
}
.nav-star-count {
  min-width: 18px;
  padding-left: 8px;
  border-left: 1px solid rgba(255, 255, 255, .25);
  color: var(--mint);
}

.hero {
  min-height: 560px;
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  align-items: center;
  gap: 52px;
  padding-block: 70px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 20px;
  color: var(--green-2);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.eyebrow span {
  width: 24px;
  height: 2px;
  background: var(--orange);
}

h1, h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(47px, 5vw, 64px);
  line-height: 1.02;
  letter-spacing: -.05em;
}

h1 span,
h1 em {
  display: block;
  white-space: nowrap;
}

h1 em {
  margin-top: 4px;
  color: var(--green-2);
  font-weight: 400;
}

.lede {
  max-width: 610px;
  margin: 27px 0 30px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.65;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.hero-star {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--green-2);
  font-size: 12px;
  font-weight: 750;
}

.hero-star > span:first-child {
  color: var(--orange);
  font-size: 17px;
}

.hero-star strong {
  padding-left: 8px;
  border-left: 1px solid var(--line);
}

.hero__visual {
  position: relative;
  height: 400px;
  overflow: hidden;
  background: var(--green);
  border-radius: 105px 12px 105px 12px;
  box-shadow: var(--shadow);
}

.hero__visual::before,
.hero__visual::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 50%;
}

.hero__visual::before { inset: 55px; }
.hero__visual::after { inset: 105px; }

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
}

.orb--one {
  width: 260px;
  height: 260px;
  right: -60px;
  top: -50px;
  background: var(--orange);
  opacity: .9;
}

.orb--two {
  width: 190px;
  height: 190px;
  left: -55px;
  bottom: -25px;
  background: var(--mint);
  opacity: .7;
}

.face-grid {
  position: absolute;
  z-index: 2;
  inset: 75px 95px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: repeat(5, 1fr);
  align-items: center;
  justify-items: center;
  transform: perspective(500px) rotateY(-9deg) rotateZ(-3deg);
}

.face-grid span {
  width: 5px;
  height: 5px;
  background: white;
  border-radius: 50%;
  box-shadow: 0 0 12px rgba(255, 255, 255, .7);
}

.face-grid span:nth-child(6n),
.face-grid span:nth-child(4n) { width: 9px; height: 9px; background: var(--orange-soft); }

.visual-label {
  position: absolute;
  z-index: 3;
  padding: 9px 13px;
  color: var(--green);
  background: rgba(251, 250, 246, .92);
  border-radius: 4px;
  box-shadow: 0 8px 22px rgba(0, 0, 0, .14);
  font: 700 10px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.visual-label--top { top: 48px; left: 36px; }
.visual-label--bottom { right: 32px; bottom: 48px; }

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-bottom: 34px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.stat {
  min-height: 126px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 24px 30px;
  border-right: 1px solid var(--line);
}

.stat strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 33px;
  font-weight: 500;
  line-height: 1;
}

.stat span {
  margin-top: 9px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.stat--stars {
  border: 0;
  color: white;
  background: var(--green);
  border-radius: 0 15px 15px 0;
}

.stat--stars span { color: var(--mint); }

.stat--stars small {
  margin-top: 7px;
  color: rgba(255, 255, 255, .72);
  font-size: 11px;
  font-weight: 700;
}

.star-sparkline {
  width: 92px;
  height: 22px;
  margin-top: 8px;
  overflow: visible;
}

.star-sparkline polyline {
  fill: none;
  stroke: var(--mint);
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.star-history-link {
  margin-top: 7px;
  color: rgba(255, 255, 255, .72);
  font-size: 11px;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.star-history-link:hover { color: white; }

.community {
  position: relative;
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
  margin-bottom: 120px;
  padding: 32px 38px;
  overflow: hidden;
  color: white;
  background:
    radial-gradient(circle at 78% -60%, rgba(240, 118, 69, .55), transparent 34%),
    var(--green);
  border-radius: 16px;
}

.community::after {
  content: "";
  position: absolute;
  width: 250px;
  height: 250px;
  right: 22%;
  top: -190px;
  border: 1px solid rgba(255, 255, 255, .15);
  border-radius: 50%;
}

.community__icon {
  width: 66px;
  height: 66px;
  display: grid;
  place-items: center;
  color: var(--green);
  background: var(--mint);
  border-radius: 50%;
}

.community__icon svg {
  width: 27px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
}

.community .eyebrow {
  margin-bottom: 8px;
  color: var(--mint);
}

.community h2 {
  margin: 0 0 10px;
  font-size: 34px;
}

.community p:not(.eyebrow) {
  max-width: 650px;
  margin: 0;
  color: rgba(255, 255, 255, .72);
  font-size: 14px;
}

.community small {
  display: block;
  margin-top: 12px;
  color: rgba(255, 255, 255, .48);
  font-size: 11px;
}

.community__actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 11px;
  min-width: 228px;
}

.community__actions .button {
  width: 100%;
}

.button--large {
  min-height: 50px;
  padding-inline: 24px;
}

.community__issues {
  color: rgba(255, 255, 255, .62);
  font-size: 11px;
  text-align: center;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.community__issues:hover { color: white; }

.areas {
  margin-bottom: 120px;
}

.areas__heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: 32px;
}

.areas__heading .eyebrow { margin-bottom: 10px; }

.areas__intro {
  max-width: 470px;
}

.areas__intro p {
  margin: 0 0 12px;
  color: var(--muted);
}

.areas__intro a {
  color: var(--green-2);
  font-size: 12px;
  font-weight: 800;
  text-decoration: underline;
  text-decoration-color: var(--orange);
  text-underline-offset: 4px;
}

.area-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  overflow: hidden;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 14px;
  gap: 1px;
}

.area-card {
  position: relative;
  min-height: 138px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 22px;
  color: var(--ink);
  background: var(--paper);
  border: 0;
  cursor: pointer;
  text-align: left;
  transition: background .18s ease, color .18s ease;
}

.area-card:hover {
  color: white;
  background: var(--green);
}

.area-card__index {
  margin-bottom: 25px;
  color: var(--orange);
  font: 750 10px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.area-card strong {
  padding-right: 24px;
  font: 600 17px/1.25 Georgia, "Times New Roman", serif;
}

.area-card__count {
  margin-top: 6px;
  color: var(--muted);
  font-size: 11px;
}

.area-card:hover .area-card__count { color: rgba(255, 255, 255, .65); }

.area-card i {
  position: absolute;
  right: 20px;
  top: 20px;
  font-style: normal;
  color: var(--muted);
  opacity: 0;
  transform: translate(-4px, 4px);
  transition: opacity .18s ease, transform .18s ease;
}

.area-card:hover i {
  opacity: 1;
  color: var(--mint);
  transform: translate(0, 0);
}

.catalog { padding-bottom: 100px; }

.catalog__heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 34px;
}

.catalog__heading .eyebrow { margin-bottom: 10px; }

h2 {
  margin: 0;
  font-size: clamp(36px, 5vw, 54px);
  letter-spacing: -.04em;
  line-height: 1;
}

.catalog__heading > p {
  max-width: 440px;
  margin: 0;
  color: var(--muted);
}

.filters {
  position: sticky;
  z-index: 10;
  top: 12px;
  display: grid;
  grid-template-columns: minmax(240px, 2fr) minmax(170px, 1fr) 120px 145px auto;
  gap: 10px;
  padding: 12px;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(30, 48, 39, .08);
  backdrop-filter: blur(14px);
}

.filters input,
.filters select {
  width: 100%;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--ink);
  background: var(--field);
}

.filters input:focus,
.filters select:focus { border-color: var(--green-2); box-shadow: 0 0 0 3px rgba(36, 90, 66, .12); }

.filters select { padding: 0 38px 0 14px; }

.search {
  position: relative;
  min-width: 0;
}

.search svg {
  position: absolute;
  z-index: 1;
  width: 18px;
  left: 15px;
  top: 15px;
  fill: none;
  stroke: var(--muted);
  stroke-width: 1.8;
  stroke-linecap: round;
}

.search input { padding: 0 16px 0 43px; }

.filter-actions {
  display: flex;
  gap: 8px;
}

.toggle input { position: absolute; opacity: 0; pointer-events: none; }

.toggle span {
  height: 48px;
  display: grid;
  place-items: center;
  padding: 0 15px;
  color: var(--muted);
  background: var(--field);
  border: 1px solid var(--line);
  border-radius: 9px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
}

.toggle input:checked + span {
  color: white;
  background: var(--green);
  border-color: var(--green);
}

.results-bar {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 13px;
}

.results-bar p { margin: 0; }

.results-bar button {
  padding: 0;
  color: var(--green-2);
  background: none;
  border: 0;
  cursor: pointer;
  font-weight: 700;
}

.paper-list {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}

.paper-card {
  position: relative;
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr) 180px;
  gap: 26px;
  padding: 25px 28px;
  border-bottom: 1px solid var(--line);
  transition: background .18s ease, transform .18s ease;
}

.paper-card:last-child { border-bottom: 0; }
.paper-card:hover { background: var(--hover); }
.paper-card:hover .paper-title { color: var(--green-2); }

.paper-year {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 22px;
  color: var(--green-2);
}

.paper-title {
  display: inline;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 19px;
  line-height: 1.35;
  font-weight: 600;
  transition: color .18s ease;
}

.paper-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
}

.section-tag {
  color: var(--green-2);
  font-weight: 750;
}

.section-tag::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 7px;
  background: var(--orange);
  border-radius: 50%;
}

.keywords {
  display: block;
  margin-top: 8px;
  color: #858d86;
  font-size: 12px;
}

.paper-links {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 7px;
  flex-wrap: wrap;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 100px;
  background: var(--field);
  font-size: 11px;
  font-weight: 750;
  transition: border-color .18s ease, transform .18s ease;
}

.chip::after { content: "↗"; font-size: 10px; }
.chip:hover { transform: translateY(-1px); border-color: var(--green-2); }
.chip--code { color: var(--green-2); background: #eef6f1; }
.chip--project { color: #365c7f; background: #f0f5fa; }
.chip--download { color: #965332; background: #fdf1eb; }
.chip--update {
  color: var(--muted);
  background: transparent;
  border-style: dashed;
}
.chip--update:hover { color: var(--green-2); }

html[data-theme="dark"] .chip--code { background: rgba(147, 216, 173, .12); }
html[data-theme="dark"] .chip--project { background: rgba(150, 186, 216, .12); color: #9ec0dc; }
html[data-theme="dark"] .chip--download { background: rgba(239, 124, 79, .12); color: #efb196; }

.empty {
  padding: 80px 20px;
  text-align: center;
  color: var(--muted);
}

.empty strong { display: block; color: var(--ink); font: 500 26px Georgia, serif; }
.empty span { display: block; margin-top: 8px; }
.empty__suggest {
  display: inline-flex;
  margin-top: 18px;
  color: var(--green-2);
  font-size: 13px;
  font-weight: 750;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.load-more {
  display: block;
  min-width: 190px;
  height: 46px;
  margin: 28px auto 0;
  color: white;
  background: var(--green);
  border: 0;
  border-radius: 100px;
  cursor: pointer;
  font-weight: 750;
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 55px; }
  .hero__copy { max-width: 700px; }
  .hero__visual { height: 340px; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .stat--stars { border-radius: 0 0 15px 0; }
  .community { grid-template-columns: 66px 1fr; }
  .community__actions { grid-column: 2; align-items: stretch; }
  .area-grid { grid-template-columns: repeat(3, 1fr); }
  .areas__heading { align-items: flex-start; }
  .filters { grid-template-columns: 1fr 1fr; }
  .search { grid-column: 1 / -1; }
  .paper-card { grid-template-columns: 64px minmax(0, 1fr); }
  .paper-links { grid-column: 2; justify-content: flex-start; }
}

@media (max-width: 620px) {
  .shell { width: min(100% - 24px, 1180px); }
  .nav { height: 66px; }
  .nav__links > a:first-child { display: none; }
  .brand > span:last-child { display: none; }
  .nav__links { gap: 8px; }
  .button--dark { padding-inline: 12px; }
  .button--dark > span:first-of-type { display: none; }
  .lang-switch { height: 30px; }
  .theme-toggle { width: 30px; height: 30px; }
  .hero { min-height: auto; gap: 42px; padding-block: 48px 60px; }
  h1 { font-size: clamp(36px, 10vw, 47px); }
  h1 em { font-size: .9em; }
  .hero__visual { height: 290px; border-radius: 80px 10px 80px 10px; }
  .stat { min-height: 106px; padding: 20px; }
  .stat strong { font-size: 28px; }
  .community {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 86px;
    padding: 28px 24px;
  }
  .community__icon { width: 52px; height: 52px; }
  .community__actions { grid-column: 1; align-items: stretch; }
  .community h2 { font-size: 30px; }
  .areas { margin-bottom: 86px; }
  .areas__heading { flex-direction: column; gap: 18px; }
  .area-grid { grid-template-columns: 1fr 1fr; }
  .area-card { min-height: 125px; padding: 19px; }
  .catalog__heading { align-items: flex-start; flex-direction: column; gap: 18px; }
  .filters { position: static; grid-template-columns: 1fr; }
  .search { grid-column: auto; }
  .filter-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .paper-card { grid-template-columns: 1fr; gap: 10px; padding: 22px 20px; }
  .paper-year { font-size: 14px; font-family: inherit; font-weight: 800; }
  .paper-links { grid-column: 1; justify-content: flex-start; margin-top: 4px; }
}