:root {
  color-scheme: dark;
  --paper: #11100f;
  --paper-deep: #0c0b0a;
  --surface: #181715;
  --surface-raised: #1d1b19;
  --ink: #f1ede4;
  --muted: #a7a098;
  --muted-deep: #938c84;
  --line: #35312d;
  --line-strong: #4b443e;
  --control-line: #746b63;
  --accent: #df4a40;
  --accent-soft: #351b19;
  --reachable: #76b391;
  --restricted: #d6a55f;
  --unreachable: #d7655d;
  --unknown: #8d8780;
  --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  min-width: 320px;
  margin: 0;
  overflow-x: clip;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

button:disabled,
input:disabled {
  cursor: not-allowed;
  opacity: 0.52;
}

a {
  color: inherit;
}

::selection {
  background: var(--accent-soft);
  color: var(--ink);
}

.shell {
  width: calc(100% - 32px);
  max-width: 1240px;
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 16px;
  z-index: 10;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0 16px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--paper-deep);
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--paper-deep);
}

.topbar {
  min-height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}

.brand {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-weight: 750;
  letter-spacing: -0.025em;
  text-decoration: none;
  transition: opacity 180ms ease;
}

.brand-dot {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--accent);
}

.archive-index {
  min-width: 3ch;
  margin: 0;
  color: var(--muted-deep);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  line-height: 1.35;
  text-align: right;
}

.archive-index > span:first-child {
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
}

.archive-index > span:nth-child(n + 2) {
  display: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 38px;
  padding-block: 48px 42px;
}

.hero-copy {
  max-width: 690px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  line-height: 1.4;
}

.hero h1 {
  max-width: 11ch;
  margin: 0;
  font-size: clamp(2.6rem, 12vw, 4.75rem);
  font-weight: 780;
  letter-spacing: -0.065em;
  line-height: 0.98;
}

.hero h1 em {
  color: var(--accent);
  font-style: normal;
}

.lede {
  max-width: 38ch;
  margin: 26px 0 0;
  color: var(--ink);
  font-size: clamp(1rem, 2.5vw, 1.18rem);
  line-height: 1.65;
}

.disclaimer {
  max-width: 58ch;
  margin: 24px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--line-strong);
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.7;
}

.hero-summary {
  min-width: 0;
  align-self: end;
  padding-top: 22px;
  border-top: 1px solid var(--line-strong);
}

.summary-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
}

.summary-heading h2 {
  margin: 0;
  font-size: 1.15rem;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.updated-at {
  margin: 0 0 1px;
  color: var(--muted-deep);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-variant-numeric: tabular-nums;
  line-height: 1.45;
  text-align: right;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 20px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.summary-grid > div {
  min-width: 0;
  padding: 14px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.summary-grid > div:first-child {
  grid-column: 1 / -1;
}

.summary-grid dt {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.4;
}

.summary-grid dd {
  margin: 7px 0 0;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 7vw, 2.1rem);
  font-variant-numeric: tabular-nums;
  font-weight: 650;
  letter-spacing: -0.055em;
  line-height: 1;
}

.status-dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  display: inline-block;
  margin-top: 0.38em;
  margin-right: 0;
  border-radius: 50%;
  background: var(--unknown);
}

.status-dot--reachable {
  background: var(--reachable);
}

.status-dot--restricted {
  background: var(--restricted);
}

.status-dot--unreachable {
  background: var(--unreachable);
}

.status-dot--unknown {
  background: var(--unknown);
}

.main-content {
  padding-block: 0 84px;
}

.section-heading,
.result-heading {
  display: flex;
  justify-content: space-between;
  gap: 24px;
}

.section-heading {
  align-items: stretch;
  flex-direction: column;
}

.section-heading h2,
.result-heading h2 {
  margin: 0;
  color: var(--ink);
  letter-spacing: -0.04em;
  line-height: 1.12;
}

.section-heading h2 {
  font-size: clamp(1.7rem, 7vw, 2.45rem);
}

.discovery {
  padding-block: 54px 28px;
}

.discovery-heading {
  align-items: stretch;
}

.search-control {
  width: 100%;
}

.search-label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.search-field {
  min-height: 52px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 0 15px;
  border: 1px solid var(--control-line);
  background: var(--surface);
  color: var(--muted);
}

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

.search-field svg {
  flex: 0 0 auto;
  color: var(--muted-deep);
}

.search-field input {
  width: 100%;
  min-width: 0;
  min-height: 50px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
}

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

.search-field kbd {
  padding: 3px 6px;
  border: 1px solid var(--line);
  background: var(--paper-deep);
  color: var(--muted-deep);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  line-height: 1.35;
  white-space: nowrap;
}

.search-help {
  margin: 7px 0 0;
  color: var(--muted-deep);
  font-size: 0.73rem;
}

.categories {
  display: flex;
  gap: 8px;
  margin-top: 24px;
  padding: 4px 4px 10px;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scroll-padding-inline: 4px;
  scroll-snap-type: x proximity;
  scrollbar-color: var(--control-line) var(--paper);
  scrollbar-width: thin;
}

.category-button,
.text-button,
.retry-button {
  min-height: 44px;
  border: 0;
  cursor: pointer;
  transition: transform 180ms cubic-bezier(0.16, 1, 0.3, 1), opacity 180ms ease;
}

.category-button {
  flex: 0 0 auto;
  padding: 0 15px;
  scroll-snap-align: start;
  border: 1px solid var(--control-line);
  background: var(--surface);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.category-button[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--paper-deep);
  font-weight: 750;
}

.category-button:focus-visible {
  outline-offset: 2px;
}

.category-button:not(:disabled):active,
.text-button:not(:disabled):active,
.retry-button:not(:disabled):active {
  transform: scale(0.98);
}

.data-notice,
.catalog-status {
  margin: 12px 0 30px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
}

.data-notice {
  border-color: var(--restricted);
  background: var(--paper-deep);
  color: var(--restricted);
}

.results {
  min-width: 0;
}

.result-heading {
  align-items: center;
  margin-top: 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-strong);
}

.result-heading h2 {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  letter-spacing: 0;
}

.text-button {
  flex: 0 0 auto;
  padding: 0 8px;
  background: transparent;
  color: var(--accent);
  font-weight: 650;
}

.catalog-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: resource;
}

.resource-item {
  position: relative;
  min-width: 0;
  padding: 28px 0 30px 42px;
  border-bottom: 1px solid var(--line);
  counter-increment: resource;
  animation: resource-enter 320ms cubic-bezier(0.16, 1, 0.3, 1) backwards;
  transition: transform 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

.resource-item::before {
  content: counter(resource, decimal-leading-zero);
  position: absolute;
  top: 32px;
  left: 0;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1.5;
}

.resource-topline,
.resource-meta,
.tag-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.resource-topline {
  justify-content: space-between;
  gap: 12px 18px;
}

.resource-name {
  min-width: 0;
  margin: 0;
  color: var(--ink);
  font-size: clamp(1.08rem, 4.5vw, 1.28rem);
  letter-spacing: -0.025em;
  line-height: 1.35;
}

.resource-link {
  min-height: 44px;
  max-width: 100%;
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  overflow-wrap: anywhere;
  text-decoration-color: var(--line-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.external-mark {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.84em;
  white-space: nowrap;
}

.resource-summary {
  max-width: 66ch;
  margin: 12px 0 17px;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.7;
}

.resource-meta {
  align-items: stretch;
}

.badge {
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  padding: 2px 9px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.25;
  white-space: nowrap;
}

.badge--category {
  border-color: var(--line);
  color: var(--muted);
}

.badge--reachable,
.badge--recommended {
  color: var(--reachable);
}

.badge--restricted,
.badge--caution {
  color: var(--restricted);
}

.badge--unreachable {
  color: var(--unreachable);
}

.badge--unknown {
  color: var(--unknown);
}

.score {
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  color: var(--muted-deep);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-variant-numeric: tabular-nums;
}

.tag-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.tag-list li {
  color: var(--muted-deep);
  font-size: 0.72rem;
}

.tag-list li::before {
  content: "#";
  margin-right: 1px;
  color: var(--accent);
}

.risk-details {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.76rem;
}

.risk-details summary {
  width: fit-content;
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  cursor: pointer;
  list-style: none;
}

.risk-details summary::-webkit-details-marker {
  display: none;
}

.risk-details summary::before {
  content: "+";
  width: 1em;
  flex: 0 0 auto;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1;
  text-align: center;
}

.risk-details[open] summary::before {
  content: "−";
}

.risk-details[open] summary {
  color: var(--ink);
}

.risk-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 7px 18px;
  margin: 2px 0 0;
  padding: 13px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.risk-list li {
  min-width: 0;
}

.risk--low {
  color: var(--reachable);
}

.risk--medium {
  color: var(--restricted);
}

.risk--high {
  color: var(--unreachable);
}

.risk--unknown {
  color: var(--unknown);
}

.skeleton-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.skeleton-row {
  height: 208px;
  border-block: 1px solid var(--line);
  background: var(--surface-raised);
  opacity: 0.72;
  animation: skeleton-pulse 1.35s ease-in-out infinite;
}

.empty-state,
.error-state {
  max-width: 560px;
  padding: 10px 0 10px 18px;
  border-left: 2px solid var(--line-strong);
}

.error-state {
  border-left-color: var(--unreachable);
}

.empty-state h3,
.error-state h3 {
  margin: 0 0 6px;
  color: var(--ink);
  font-size: 1.05rem;
}

.empty-state p,
.error-state p {
  margin: 0;
  color: var(--muted);
}

.retry-button {
  margin-top: 18px;
  padding: 0 18px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--paper-deep);
  font-weight: 750;
}

[hidden] {
  display: none !important;
}

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

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes skeleton-pulse {
  50% {
    opacity: 0.38;
  }
}

@media (max-width: 479px) {
  .search-field kbd {
    display: none;
  }

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

  .risk-list {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 640px) {
  .shell {
    width: calc(100% - 48px);
  }

  .archive-index > span:nth-child(n + 2) {
    display: inline;
  }

  .hero {
    padding-block: 60px 52px;
  }

  .main-content {
    padding-bottom: 96px;
  }

  .section-heading {
    gap: 30px;
  }

  .search-control {
    max-width: 540px;
  }

  .catalog-list,
  .skeleton-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .resource-item {
    padding-left: 48px;
  }

  .risk-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .shell {
    width: calc(100% - 64px);
  }

  .hero {
    grid-template-columns: minmax(0, 11fr) minmax(340px, 9fr);
    align-items: end;
    gap: 48px;
    padding-block: 76px 64px;
  }

  .hero-copy {
    padding-bottom: 4px;
  }

  .hero h1 {
    font-size: clamp(3.6rem, 6.2vw, 4.75rem);
  }

  .hero-summary {
    padding-top: 0;
    padding-left: 30px;
    border-top: 0;
    border-left: 1px solid var(--line-strong);
  }

  .summary-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .summary-grid > div {
    padding: 12px 4px;
  }

  .summary-grid > div:first-child {
    grid-column: auto;
  }

  .summary-grid dt {
    min-height: 2.7em;
    display: flex;
    align-items: flex-start;
    gap: 4px;
    font-size: 0.68rem;
    line-height: 1.35;
    white-space: nowrap;
  }

  .summary-grid dd {
    font-size: clamp(1.35rem, 2.1vw, 1.85rem);
  }

  .main-content {
    padding-bottom: 112px;
  }

  .discovery {
    padding-block: 68px 34px;
  }

  .discovery-heading {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(420px, 0.88fr);
    align-items: end;
    gap: 48px;
  }

  .search-control {
    width: 100%;
    max-width: none;
  }

  .catalog-list,
  .skeleton-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 48px;
  }

  .resource-item {
    padding-top: 32px;
    padding-bottom: 34px;
  }

  .resource-item::before {
    top: 36px;
  }

  .resource-summary {
    min-height: 3.4em;
  }
}

@media (min-width: 1200px) {
  .shell {
    width: calc(100% - 80px);
    max-width: 1240px;
  }

  .hero {
    gap: 72px;
    padding-block: 88px 72px;
  }

  .hero-summary {
    padding-left: 38px;
  }

  .catalog-list,
  .skeleton-list {
    column-gap: 64px;
  }
}

@media (hover: hover) {
  .brand:hover {
    opacity: 0.72;
  }

  .category-button:not(:disabled):hover {
    border-color: var(--muted);
    color: var(--ink);
  }

  .category-button[aria-pressed="true"]:not(:disabled):hover {
    border-color: var(--accent);
    color: var(--paper-deep);
  }

  .text-button:not(:disabled):hover,
  .resource-link:hover,
  .risk-details summary:hover {
    color: var(--accent);
  }

  .retry-button:not(:disabled):hover {
    opacity: 0.82;
  }

  .resource-item:hover {
    transform: translateY(-2px);
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    scroll-behavior: auto !important;
    transition: none !important;
  }
}