:root {
  --bg: #d8ddc8;
  --paper: #e8ecda;
  --sheet: #f3f5e8;
  --ink: #2c3224;
  --muted: #5d6550;
  --line: #b7c0a4;
  --pine: #3b5340;
  --pine-soft: #5d7a5c;
  --seal: #8e3a30;
  --seal-soft: #c96a58;
  --mark: #e6d27a;
  --flash: #f0c98a;
  --shadow: 0 10px 30px rgba(44, 50, 36, 0.08);
  --safe-t: env(safe-area-inset-top);
  --safe-b: env(safe-area-inset-bottom);
  --top-h: calc(58px + var(--safe-t));
  --drawer-w: min(86vw, 320px);
}

:root[data-theme="dusk"] {
  --bg: #1f241c;
  --paper: #262c22;
  --sheet: #30372a;
  --ink: #d7dcc8;
  --muted: #9aa38a;
  --line: #454d3b;
  --pine: #9bb89a;
  --pine-soft: #7d9a78;
  --seal: #d27a6c;
  --seal-soft: #b56558;
  --mark: #6d5c2a;
  --flash: #7a5a28;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
html { color-scheme: light; }
html[data-theme="dusk"] { color-scheme: dark; }

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Source Han Sans SC",
    "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.18;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.35'/%3E%3C/svg%3E");
}

.top, .shell, .drawer { position: relative; z-index: 1; }

.top {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 44px 1fr auto;
  grid-template-areas:
    "menu brand theme"
    "search search search";
  gap: 8px 8px;
  padding: calc(8px + var(--safe-t)) 12px 10px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.brand {
  grid-area: brand;
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: inherit;
  min-width: 0;
}
.seal {
  width: 28px;
  height: 28px;
  border: 1.5px solid var(--seal);
  color: var(--seal);
  display: grid;
  place-items: center;
  font-family: "Songti SC", "STSong", "Noto Serif SC", serif;
  font-weight: 700;
  font-size: 16px;
  transform: rotate(-8deg);
  flex: none;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.brand-text strong {
  font-family: "Songti SC", "STSong", "Noto Serif SC", serif;
  font-size: 16px;
  letter-spacing: 0.08em;
}
.brand-text small { color: var(--muted); font-size: 11px; letter-spacing: 0.12em; }

.search {
  grid-area: search;
  display: flex;
  gap: 6px;
}
.search input {
  flex: 1;
  height: 42px;
  border: 1px solid var(--line);
  background: var(--sheet);
  color: var(--ink);
  border-radius: 999px;
  padding: 0 16px;
  font-size: 16px;
  outline: none;
}
.search input:focus { border-color: var(--pine); box-shadow: 0 0 0 3px color-mix(in srgb, var(--pine) 18%, transparent); }
.go, .icon-btn, .text-btn, .chip, .law-card {
  font: inherit;
  color: inherit;
  background: transparent;
  border: 0;
  cursor: pointer;
}
.go {
  height: 42px;
  min-width: 42px;
  border-radius: 999px;
  background: var(--pine);
  color: var(--sheet);
  font-weight: 600;
}
.icon-btn {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--sheet);
}
#menuBtn { grid-area: menu; }
#themeBtn { grid-area: theme; font-family: "Songti SC", serif; color: var(--seal); }

.burger, .burger:before, .burger:after {
  display: block;
  width: 16px;
  height: 1.5px;
  background: var(--ink);
  position: relative;
  margin: 0 auto;
}
.burger:before, .burger:after {
  content: "";
  position: absolute;
  left: 0;
}
.burger:before { top: -5px; }
.burger:after { top: 5px; }

.shell { min-height: calc(100dvh - var(--top-h)); }
.stage {
  padding: 14px 14px calc(28px + var(--safe-b));
  max-width: 820px;
  margin: 0 auto;
}

.hero {
  border: 1px solid var(--line);
  background: var(--sheet);
  padding: 18px 16px 14px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
  position: relative;
}
.hero:before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid color-mix(in srgb, var(--seal) 35%, var(--line));
  pointer-events: none;
}
.hero h1 {
  margin: 0 0 6px;
  font-family: "Songti SC", "STSong", "Noto Serif SC", serif;
  font-size: 26px;
  letter-spacing: 0.12em;
  font-weight: 700;
}
.hero p { margin: 0; color: var(--muted); font-size: 13px; }

.cat { margin: 22px 0 10px; }
.cat h2 {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--seal);
  font-weight: 600;
}
.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.law-card {
  text-align: left;
  border: 1px solid var(--line);
  background: var(--sheet);
  padding: 12px 12px 10px;
  border-radius: 2px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-height: 84px;
}
.law-card:active { transform: translateY(1px); }
.law-card b {
  font-family: "Songti SC", "STSong", serif;
  font-size: 17px;
  letter-spacing: 0.04em;
}
.law-card span { color: var(--muted); font-size: 12px; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 0; }
.chip {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  color: var(--muted);
}

.law-head { margin-bottom: 14px; }
.law-head h1 {
  margin: 4px 0 6px;
  font-family: "Songti SC", "STSong", serif;
  font-size: 22px;
  letter-spacing: 0.06em;
  line-height: 1.35;
}
.meta { color: var(--muted); font-size: 12px; display: flex; flex-wrap: wrap; gap: 8px; }
.jump {
  display: flex;
  gap: 6px;
  margin-top: 10px;
}
.jump input {
  flex: 1;
  height: 38px;
  border: 1px solid var(--line);
  background: var(--sheet);
  color: var(--ink);
  border-radius: 8px;
  padding: 0 12px;
  font-size: 16px;
}

.heading {
  margin: 22px 0 8px;
  padding-top: 6px;
  scroll-margin-top: 130px;
  font-family: "Songti SC", "STSong", serif;
  letter-spacing: 0.08em;
  color: var(--pine);
}
.heading.h2 { font-size: 18px; }
.heading.h3 { font-size: 16px; }
.heading.h4 { font-size: 15px; color: var(--pine-soft); }

.article {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-left: 3px solid var(--seal);
  padding: 12px 12px 10px;
  margin: 0 0 10px;
  scroll-margin-top: 130px;
}
.article.hit { outline: 2px solid var(--flash); background: color-mix(in srgb, var(--flash) 28%, var(--sheet)); }
.art-no {
  font-family: "Songti SC", "STSong", serif;
  color: var(--seal);
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
.art-path { color: var(--muted); font-size: 11px; margin-bottom: 6px; }
.art-body { white-space: pre-wrap; word-break: break-word; font-size: 16px; }
.art-body :is(p) { margin: 0 0 0.6em; }
mark {
  background: var(--mark);
  color: inherit;
  padding: 0 1px;
  border-radius: 2px;
}

.result {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--sheet);
  border: 1px solid var(--line);
  padding: 12px;
  margin: 0 0 8px;
}
.result .who { color: var(--pine); font-size: 12px; letter-spacing: 0.04em; }
.result b { display: block; font-family: "Songti SC", serif; margin: 2px 0 4px; }
.result p { margin: 0; color: var(--muted); font-size: 14px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.empty, .status { color: var(--muted); padding: 24px 8px; text-align: center; }

.drawer {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--drawer-w);
  background: var(--paper);
  border-right: 1px solid var(--line);
  z-index: 30;
  transform: translateX(-105%);
  transition: transform 0.22s ease;
  display: flex;
  flex-direction: column;
  padding-top: var(--safe-t);
}
.drawer.open { transform: none; }
.drawer-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 14px 10px;
  border-bottom: 1px solid var(--line);
  font-family: "Songti SC", serif;
  letter-spacing: 0.12em;
}
.text-btn { color: var(--seal); padding: 6px 4px; }
.toc {
  overflow: auto;
  padding: 8px 8px calc(20px + var(--safe-b));
  -webkit-overflow-scrolling: touch;
}
.toc a, .toc button {
  display: block;
  width: 100%;
  text-align: left;
  text-decoration: none;
  color: inherit;
  background: none;
  border: 0;
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 14px;
}
.toc .lv3 { padding-left: 22px; color: var(--muted); }
.toc .lv4 { padding-left: 34px; color: var(--muted); font-size: 13px; }
.toc a:active, .toc button:active, .toc .on { background: color-mix(in srgb, var(--pine) 14%, transparent); color: var(--pine); }
.toc .group { margin: 10px 6px 4px; color: var(--seal); font-size: 12px; letter-spacing: 0.16em; }

.scrim {
  position: fixed;
  inset: 0;
  background: rgba(30, 34, 24, 0.35);
  z-index: 25;
}

@media (min-width: 880px) {
  .top {
    grid-template-columns: 44px minmax(140px, 200px) 1fr 44px;
    grid-template-areas: "menu brand search theme";
    align-items: center;
    padding: 10px 18px;
  }
  .shell {
    display: grid;
    grid-template-columns: 280px 1fr;
  }
  .drawer {
    position: sticky;
    top: var(--top-h);
    height: calc(100dvh - var(--top-h));
    transform: none;
    width: 280px;
  }
  .drawer[hidden] { display: flex !important; }
  #closeDrawer, #scrim, #menuBtn { display: none; }
  .stage { padding: 22px 28px 48px; }
  .grid { grid-template-columns: 1fr 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .drawer { transition: none; }
}