/* dshworld.ai — first public map */

:root {
  --bg: #f4efe4;
  --bg-2: #ebe4d4;
  --paper: #fffaf0;
  --ink: #16130e;
  --ink-2: #3d3830;
  --muted: #6d665a;
  --line: #d4cbb8;
  --line-strong: #16130e;
  --accent: #b42318;
  --accent-ink: #8a160f;
  --accent-soft: #f3d2cc;
  --ok: #1f4d3a;
  --warn: #8a4b12;
  --shadow: 0 1px 0 rgba(22, 19, 14, 0.06);
  --sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Source Han Sans SC",
    "Microsoft YaHei", "WenQuanYi Micro Hei", system-ui, sans-serif;
  --mono: "SFMono-Regular", "Cascadia Code", "Sarasa Mono SC", "Microsoft YaHei Mono",
    ui-monospace, Menlo, Consolas, monospace;
  --max: 72rem;
  --narrow: 46rem;
  --pad: clamp(1.1rem, 3.2vw, 2rem);
  --radius: 2px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12110e;
    --bg-2: #1a1814;
    --paper: #1c1a16;
    --ink: #f3eee4;
    --ink-2: #d4cbb8;
    --muted: #9a9284;
    --line: #3a352c;
    --line-strong: #f3eee4;
    --accent: #ef6a5a;
    --accent-ink: #ffd2cb;
    --accent-soft: #3a201c;
    --ok: #8fceb0;
    --warn: #e0b07a;
    --shadow: none;
  }
}

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

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

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  letter-spacing: 0.01em;
  background:
    radial-gradient(1200px 480px at 8% -10%, rgba(180, 35, 24, 0.06), transparent 55%),
    var(--bg);
  min-height: 100vh;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
}

a { color: var(--accent-ink); text-underline-offset: 0.18em; }
a:hover { color: var(--accent); }
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 0.8rem;
  top: -3rem;
  background: var(--ink);
  color: var(--bg);
  padding: 0.4rem 0.7rem;
  z-index: 80;
}
.skip:focus { top: 0.8rem; }

.wrap {
  width: min(var(--max), calc(100% - var(--pad) * 2));
  margin-inline: auto;
}
.wrap-narrow { width: min(var(--narrow), calc(100% - var(--pad) * 2)); margin-inline: auto; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.6rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: inherit;
  min-width: 0;
}
.brand:hover { color: inherit; }

.mark {
  width: 28px;
  height: 28px;
  flex: 0 0 auto;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand-text strong {
  font-size: 1.02rem;
  font-weight: 650;
  letter-spacing: 0.01em;
}
.brand-text span {
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  color: var(--ink);
  padding: 0.35rem 0.65rem;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.15rem 1.05rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 0.92rem;
  padding: 0.2rem 0;
  border-bottom: 1px solid transparent;
}
.nav a:hover { color: var(--ink); border-bottom-color: var(--ink); }
.nav a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

.nav-group { position: relative; }
.nav-group > span {
  font-size: 0.92rem;
  color: var(--ink-2);
  cursor: default;
}
.nav-sub {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 0.45rem);
  min-width: 12.5rem;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  padding: 0.45rem 0.2rem;
  box-shadow: var(--shadow);
  z-index: 30;
}
.nav-group:hover .nav-sub,
.nav-group:focus-within .nav-sub { display: block; }
.nav-sub a {
  display: block;
  padding: 0.38rem 0.75rem;
  border: 0;
  font-size: 0.88rem;
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; align-items: center; }
  .nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: var(--paper);
    border-bottom: 1px solid var(--line-strong);
    flex-direction: column;
    align-items: stretch;
    padding: 0.6rem var(--pad) 1rem;
    gap: 0;
  }
  .site-header.is-open .nav { display: flex; }
  .nav a, .nav-group > span {
    display: block;
    padding: 0.7rem 0;
    border-bottom: 1px solid var(--line);
    font-size: 1rem;
  }
  .nav-sub {
    display: block;
    position: static;
    border: 0;
    background: transparent;
    padding: 0 0 0.4rem 0.8rem;
    box-shadow: none;
  }
  .nav-sub a { border: 0; padding: 0.45rem 0; color: var(--muted); }
}

/* Hero */
.hero {
  padding: clamp(2.4rem, 6vw, 4.6rem) 0 1.4rem;
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 1rem;
}
.kicker::before {
  content: "";
  width: 0.55rem;
  height: 0.55rem;
  background: var(--accent);
}
h1, h2, h3 { font-weight: 650; letter-spacing: -0.02em; line-height: 1.22; }
.hero h1 {
  font-size: clamp(2.05rem, 6.4vw, 3.55rem);
  margin: 0 0 1.1rem;
  max-width: 16ch;
}
.lede {
  font-size: clamp(1.02rem, 2.1vw, 1.18rem);
  color: var(--ink-2);
  max-width: 42rem;
  margin: 0;
}
.note {
  margin: 1.15rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

/* Beats */
.beats { padding: 0.4rem 0 1.2rem; }
.beat {
  display: grid;
  grid-template-columns: 6.2rem 1fr;
  gap: 1.2rem 1.8rem;
  padding: 1.7rem 0;
  border-top: 1px solid var(--line);
}
.beat:last-child { border-bottom: 1px solid var(--line); }
.beat-no {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  padding-top: 0.35rem;
}
.beat h2 { margin: 0 0 0.7rem; font-size: clamp(1.35rem, 3vw, 1.75rem); }
.beat p { margin: 0 0 0.75rem; color: var(--ink-2); }
.beat p:last-child { margin-bottom: 0; }

@media (max-width: 680px) {
  .beat { grid-template-columns: 1fr; gap: 0.35rem; padding: 1.35rem 0; }
}

/* Command */
.cmd {
  display: flex;
  align-items: stretch;
  gap: 0;
  border: 1px solid var(--line-strong);
  background: var(--paper);
  overflow: hidden;
  max-width: 40rem;
}
.cmd code {
  display: block;
  flex: 1;
  padding: 0.7rem 0.9rem;
  font-family: var(--mono);
  font-size: 0.88rem;
  overflow-x: auto;
  white-space: nowrap;
}
.cmd button {
  border: 0;
  border-left: 1px solid var(--line-strong);
  background: var(--bg-2);
  color: var(--ink);
  font: inherit;
  font-size: 0.8rem;
  padding: 0 0.9rem;
  cursor: pointer;
  white-space: nowrap;
}
.cmd button:hover { background: var(--accent-soft); }
.cmd-hint { margin: 0.45rem 0 0; color: var(--muted); font-size: 0.85rem; }

.install {
  margin: 2.2rem 0 0.4rem;
  padding: 1.2rem 1.25rem 1.3rem;
  background: var(--paper);
  border: 1px solid var(--line);
}
.install h2 { margin: 0 0 0.55rem; font-size: 1.15rem; }

/* Path index */
.paths {
  padding: 2.4rem 0 1rem;
}
.paths h2 { margin: 0 0 0.35rem; font-size: 1.2rem; }
.paths .sub { margin: 0 0 1.1rem; color: var(--muted); font-size: 0.92rem; }
.path-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border: 1px solid var(--line-strong);
  background: var(--paper);
}
.path-grid a {
  display: block;
  padding: 1rem 0.95rem 1.1rem;
  text-decoration: none;
  color: inherit;
  border-right: 1px solid var(--line);
  min-height: 8.2rem;
}
.path-grid a:last-child { border-right: 0; }
.path-grid a:hover { background: var(--bg-2); }
.path-grid em {
  display: block;
  font-style: normal;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.45rem;
}
.path-grid strong { display: block; font-size: 1.02rem; margin-bottom: 0.35rem; }
.path-grid span { display: block; color: var(--muted); font-size: 0.86rem; line-height: 1.5; }

@media (max-width: 980px) {
  .path-grid { grid-template-columns: 1fr 1fr; }
  .path-grid a { border-right: 0; border-bottom: 1px solid var(--line); min-height: 0; }
  .path-grid a:nth-child(odd) { border-right: 1px solid var(--line); }
  .path-grid a:last-child { border-bottom: 0; }
}
@media (max-width: 560px) {
  .path-grid { grid-template-columns: 1fr; }
  .path-grid a,
  .path-grid a:nth-child(odd) { border-right: 0; border-bottom: 1px solid var(--line); }
}

/* Page body */
.page { padding: 2.2rem 0 3.2rem; }
.page h1 {
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  margin: 0 0 0.85rem;
}
.page .lede { margin-bottom: 1.4rem; }

.prose { max-width: 44rem; }
.prose h2 {
  margin: 2rem 0 0.6rem;
  font-size: 1.2rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
}
.prose h2:first-child { border-top: 0; padding-top: 0; margin-top: 0.4rem; }
.prose p { margin: 0 0 0.8rem; color: var(--ink-2); }
.prose ul, .prose ol { margin: 0 0 0.9rem; padding-left: 1.2rem; color: var(--ink-2); }
.prose li { margin: 0.25rem 0; }
.prose code, .inline-code, p code, li code, td code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--bg-2);
  padding: 0.08em 0.32em;
  border-radius: var(--radius);
}

.dont {
  background: var(--paper);
  border-left: 3px solid var(--accent);
  padding: 0.85rem 1rem;
  margin: 1rem 0 0;
}
.dont strong { display: block; margin-bottom: 0.3rem; color: var(--accent-ink); }

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0 0 1.3rem;
}
.chip {
  display: inline-block;
  border: 1px solid var(--line-strong);
  padding: 0.12rem 0.5rem;
  font-size: 0.78rem;
  font-family: var(--mono);
  letter-spacing: 0.02em;
  background: var(--paper);
}

/* Modes */
.mode-list { display: grid; gap: 0.9rem; margin-top: 1.4rem; }
.mode {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 1.15rem 1.2rem 1.2rem;
}
.mode header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.45rem 0.8rem;
  margin-bottom: 0.45rem;
}
.mode h2 { margin: 0; font-size: 1.28rem; }
.mode .alias {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
}
.mode p { margin: 0 0 0.55rem; color: var(--ink-2); }
.mode p:last-child { margin-bottom: 0; }
.mode .fit { color: var(--ok); font-size: 0.92rem; }
.mode .not { color: var(--warn); font-size: 0.92rem; }

/* Stack */
.stack { display: grid; gap: 0.55rem; margin: 1rem 0 1.4rem; }
.stack-card {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  padding: 0.85rem 1rem;
}
.stack-card.indent-1 { margin-left: 1rem; }
.stack-card.indent-2 { margin-left: 2rem; }
.stack-card.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 0.55rem; border: 0; padding: 0; background: transparent; }
.stack-card.pair > div {
  background: var(--paper);
  border: 1px solid var(--line-strong);
  padding: 0.85rem 1rem;
}
.stack-card em {
  display: block;
  font-style: normal;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--accent);
  margin-bottom: 0.2rem;
}
.stack-card strong { display: block; }
.stack-card span { display: block; color: var(--muted); font-size: 0.88rem; margin-top: 0.15rem; }
@media (max-width: 640px) {
  .stack-card.indent-1, .stack-card.indent-2 { margin-left: 0; }
  .stack-card.pair { grid-template-columns: 1fr; }
}

/* Sandbox table */
.table-wrap { overflow-x: auto; margin: 0.8rem 0 1.1rem; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  background: var(--paper);
}
th, td {
  text-align: left;
  vertical-align: top;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--line);
}
th { font-weight: 650; background: var(--bg-2); }

.pager {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2.2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.92rem;
}
.pager a { text-decoration: none; }
.pager span { color: var(--muted); display: block; font-size: 0.78rem; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--line-strong);
  padding: 1.4rem 0 2.2rem;
  margin-top: 1rem;
  color: var(--ink-2);
  font-size: 0.9rem;
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 1.4rem;
}
.site-footer h2 {
  margin: 0 0 0.4rem;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
.site-footer p, .site-footer li { margin: 0 0 0.35rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer .tiny { color: var(--muted); font-size: 0.82rem; margin-top: 1.1rem; }
@media (max-width: 760px) {
  .foot-grid { grid-template-columns: 1fr; }
}

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