:root {
  --black: #0a0a0a;
  --white: #fafafa;
  --gray-100: #f5f5f5;
  --gray-200: #e8e8e8;
  --gray-400: #999;
  --gray-600: #666;
  --gray-800: #333;
  --measure: 860px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--black);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  color-scheme: light;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(
      1200px 800px at 28% -10%,
      rgba(10, 10, 10, 0.03),
      transparent 60%
    ),
    radial-gradient(
      900px 700px at 92% 8%,
      rgba(10, 10, 10, 0.02),
      transparent 58%
    );
  mix-blend-mode: multiply;
}

::selection {
  background: var(--black);
  color: var(--white);
}

a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--gray-200);
}

:where(a, button, input, textarea, summary):focus-visible {
  outline: 2px solid var(--black);
  outline-offset: 2px;
}

code {
  font-family: var(--mono);
  background: rgba(245, 245, 245, 0.9);
  border: 1px solid var(--gray-200);
  padding: 0 4px;
}

pre {
  background: rgba(245, 245, 245, 0.9);
  border: 1px solid var(--gray-200);
  padding: 12px 14px;
  overflow: auto;
  margin: 12px 0 0;
}

pre code {
  background: transparent;
  border: 0;
  padding: 0;
  font-size: 12px;
  line-height: 1.6;
}

.container {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 24px;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 250, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
}

.header-inner {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.logo {
  font-size: 11px;
  letter-spacing: 4px;
  text-transform: uppercase;
  font-weight: 650;
  color: var(--gray-600);
  white-space: nowrap;
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
}

.tag {
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 7px 12px;
  border: 1px solid var(--gray-200);
  color: var(--gray-600);
  white-space: nowrap;
  background: rgba(245, 245, 245, 0.6);
}

.nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
}

.nav:empty {
  display: none;
}

.nav a {
  border-bottom: none;
  color: var(--gray-600);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 6px 8px;
  border-radius: 0;
}

.nav a:hover {
  color: var(--black);
  background: rgba(245, 245, 245, 0.9);
}

.nav a[aria-current="true"] {
  color: var(--black);
  background: rgba(245, 245, 245, 0.9);
}

.hero {
  padding: 72px 0 36px;
}

body[data-layout="compare"] .hero,
body[data-layout="roadmap"] .hero,
body[data-layout="playbook"] .hero,
body[data-layout="audit"] .hero {
  text-align: left;
}

body:not([data-layout]) .hero,
body[data-layout="memo"] .hero {
  text-align: center;
}

.hero-label {
  font-size: 11px;
  letter-spacing: 6px;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 14px;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(30px, 4.6vw, 54px);
  font-weight: 300;
  letter-spacing: 2px;
  line-height: 1.18;
}

h1 strong {
  font-weight: 700;
}

.hero-sub {
  margin: 0;
  font-size: 13px;
  color: var(--gray-600);
  letter-spacing: 0.8px;
}

.hero-sub span {
  margin: 0 10px;
  color: var(--gray-400);
}

.hero-abstract {
  margin: 14px auto 0;
  color: var(--gray-800);
  max-width: 740px;
}

.hero-abstract:empty {
  display: none;
}

body[data-layout="compare"] .hero-abstract,
body[data-layout="roadmap"] .hero-abstract,
body[data-layout="playbook"] .hero-abstract,
body[data-layout="audit"] .hero-abstract {
  margin-left: 0;
}

.chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 18px;
}

body[data-layout="compare"] .chips,
body[data-layout="roadmap"] .chips,
body[data-layout="playbook"] .chips,
body[data-layout="audit"] .chips {
  justify-content: flex-start;
}

.chip {
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 6px 10px;
  border: 1px solid var(--gray-200);
  background: rgba(250, 250, 250, 0.9);
  color: var(--gray-600);
}

.toc {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

body[data-layout="compare"] .toc,
body[data-layout="roadmap"] .toc,
body[data-layout="playbook"] .toc,
body[data-layout="audit"] .toc {
  justify-content: flex-start;
}

.toc a {
  border-bottom: none;
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 6px 8px;
  background: rgba(245, 245, 245, 0.7);
}

.toc a:hover {
  background: rgba(245, 245, 245, 0.95);
}

hr {
  border: 0;
  border-top: 1px solid var(--gray-200);
  margin: 22px 0;
}

section {
  padding: 18px 0;
}

h2 {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 6px;
  text-transform: uppercase;
  color: var(--gray-600);
  font-weight: 650;
}

.callout {
  border: 1px solid var(--black);
  background: rgba(250, 250, 250, 0.92);
  padding: 16px 16px;
}

.callout[data-variant="info"] {
  border-color: var(--black);
}

.callout[data-variant="warn"] {
  border-color: var(--black);
}

.callout[data-variant="danger"] {
  border-color: var(--black);
}

.callout[data-variant="success"] {
  border-color: var(--black);
}

.callout-title {
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gray-600);
  margin: 0 0 8px;
}

.callout p {
  margin: 0;
}

.callout p + p {
  margin-top: 10px;
}

ul,
ol {
  margin: 10px 0 0;
  padding-left: 18px;
}

li + li {
  margin-top: 6px;
}

.grid {
  display: grid;
  gap: 12px;
}

.grid.cols-2 {
  grid-template-columns: 1fr 1fr;
}

.grid.cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  border: 1px solid var(--gray-200);
  background: rgba(245, 245, 245, 0.6);
  padding: 16px;
}

.kicker {
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gray-600);
  margin: 0 0 8px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 14px;
  letter-spacing: 0.3px;
}

.card p {
  margin: 0;
  color: var(--gray-800);
}

.card p + p {
  margin-top: 10px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
  font-size: 13px;
}

th,
td {
  text-align: left;
  vertical-align: top;
  border: 1px solid var(--gray-200);
  padding: 10px 10px;
}

th {
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gray-600);
  background: rgba(250, 250, 250, 0.92);
}

details {
  margin-top: 10px;
  border: 1px solid var(--gray-200);
  background: rgba(250, 250, 250, 0.9);
}

summary {
  cursor: pointer;
  padding: 10px 12px;
  font-size: 12px;
  color: var(--gray-800);
}

.details-body {
  padding: 0 12px 12px;
  color: var(--gray-800);
}

.mono {
  font-family: var(--mono);
}

.muted {
  color: var(--gray-600);
}

.toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  margin-top: 18px;
}

body[data-layout="compare"] .toolbar,
body[data-layout="roadmap"] .toolbar,
body[data-layout="playbook"] .toolbar,
body[data-layout="audit"] .toolbar {
  justify-content: flex-start;
}

.btn {
  appearance: none;
  border: 1px solid var(--black);
  background: var(--black);
  color: var(--white);
  padding: 8px 12px;
  font-size: 12px;
  letter-spacing: 2px;
  text-transform: uppercase;
  border-radius: 0;
  cursor: pointer;
}

.btn:hover {
  opacity: 0.92;
}

.btn.ghost {
  background: transparent;
  color: var(--black);
}

.dropzone {
  margin-top: 14px;
  border: 1px dashed var(--gray-200);
  background: rgba(250, 250, 250, 0.88);
  padding: 16px;
}

.dropzone[data-drag="true"] {
  border-color: var(--black);
}

.dropzone p {
  margin: 0;
  color: var(--gray-800);
}

.dropzone .hint {
  margin-top: 8px;
  font-size: 12px;
  color: var(--gray-600);
}

.error {
  border: 1px solid var(--black);
  background: rgba(250, 250, 250, 0.92);
  padding: 12px 14px;
  margin-top: 12px;
}

.error pre {
  margin-top: 10px;
}

footer {
  margin: 52px 0 38px;
  padding-top: 16px;
  border-top: 1px solid var(--gray-200);
  color: var(--gray-600);
  font-size: 12px;
  text-align: center;
}

@media (max-width: 900px) {
  .grid.cols-3 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .grid.cols-2 {
    grid-template-columns: 1fr;
  }

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

  .nav {
    justify-content: flex-start;
  }

  .container {
    padding: 0 18px;
  }
}

@media print {
  body::before {
    display: none;
  }

  .header {
    position: static;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: transparent;
  }

  body {
    font-size: 12pt;
  }

  a {
    border-bottom: none;
    text-decoration: underline;
  }

  .nav,
  .toolbar,
  .dropzone {
    display: none !important;
  }
}