/* standalone reset (replaces Tailwind preflight) */
*, *::before, *::after { box-sizing: border-box; }
h1, h2, h3, h4, p, figure, blockquote { margin: 0; }
button, input { font-family: inherit; font-size: inherit; color: inherit; }
button { background: none; border: 0; padding: 0; }
table { border-collapse: collapse; border-spacing: 0; }
img, svg { vertical-align: middle; }
ul, ol { margin: 0; padding: 0; }

:root {
  color-scheme: dark;
  --code-comment: #6f7d93;
  --code-keyword: #ff9b6a;
  --code-string: #8bd9a8;
  --code-number: #d8b06a;
  --code-func: #8fc7ff;
  --bg: #0a0c11;
  --bg-elev: #0f131c;
  --bg-code: #0d1119;
  --surface: rgba(255, 255, 255, 0.035);
  --surface-2: rgba(255, 255, 255, 0.065);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.18);
  --text: #e9edf6;
  --text-2: #a8b2c6;
  --text-3: #707c94;
  --accent: #ff9557;
  --accent-2: #63e6c3;
  --accent-3: #9c9cff;
  --accent-soft: rgba(255, 149, 87, 0.13);
  --teal-soft: rgba(99, 230, 195, 0.1);
  --danger: #f28b8b;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
  --mono: "DM Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

html[data-theme="light"] {
  color-scheme: light;
  --code-comment: #8a93a5;
  --code-keyword: #b4471c;
  --code-string: #12734e;
  --code-number: #96650b;
  --code-func: #2058a8;
  --bg: #f6f7fb;
  --bg-elev: #ffffff;
  --bg-code: #f4f6fa;
  --surface: rgba(20, 28, 45, 0.035);
  --surface-2: rgba(20, 28, 45, 0.07);
  --border: rgba(20, 28, 45, 0.11);
  --border-strong: rgba(20, 28, 45, 0.22);
  --text: #172033;
  --text-2: #4a566d;
  --text-3: #7b869b;
  --accent: #d9631f;
  --accent-2: #0f8f72;
  --accent-3: #5b57d6;
  --accent-soft: rgba(217, 99, 31, 0.09);
  --teal-soft: rgba(15, 143, 114, 0.08);
  --danger: #c24747;
  --shadow: 0 20px 55px rgba(30, 40, 70, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(58rem 36rem at 10% -12%, var(--accent-soft), transparent 62%),
    radial-gradient(46rem 32rem at 92% 4%, var(--teal-soft), transparent 62%),
    linear-gradient(rgba(128, 145, 180, 0.045) 1px, transparent 1px) 0 0 / 46px 46px,
    linear-gradient(90deg, rgba(128, 145, 180, 0.045) 1px, transparent 1px) 0 0 / 46px 46px;
  mask-image: linear-gradient(to bottom, #000 0%, #000 42%, transparent 92%);
}
.app { position: relative; z-index: 1; min-height: 100vh; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
::selection { background: var(--accent-soft); color: var(--text); }
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 20px; border: 2px solid transparent; background-clip: padding-box; }
::-webkit-scrollbar-track { background: transparent; }

/* ---------- top bar ---------- */
.scroll-progress {
  position: fixed; inset: 0 0 auto 0; height: 2px; z-index: 120;
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--accent), #ffd39a 46%, var(--accent-2));
}
.topbar {
  position: sticky; top: 0; z-index: 60;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 76%, transparent);
  backdrop-filter: blur(20px) saturate(160%);
}
.topbar-inner {
  max-width: 1560px; margin: 0 auto; height: 62px; padding: 0 28px;
  display: flex; align-items: center; gap: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -0.02em; }
.brand-mark {
  width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center;
  color: #0b0e14;
  background: linear-gradient(135deg, #ffb173, var(--accent) 55%, #f2683c);
  box-shadow: 0 4px 18px rgba(255, 149, 87, 0.28);
}
.brand-text { font-size: 17px; }
.brand-tag { font-size: 11px; color: var(--text-3); border-left: 1px solid var(--border); padding-left: 10px; font-weight: 500; }
.topbar-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.search-trigger {
  display: flex; align-items: center; gap: 10px; height: 34px; min-width: 268px; padding: 0 10px 0 13px;
  border: 1px solid var(--border); border-radius: 9px; background: var(--surface);
  color: var(--text-3); font-size: 12.5px; transition: border-color .2s, background .2s, color .2s;
}
.search-trigger:hover { border-color: var(--border-strong); background: var(--surface-2); color: var(--text-2); }
.search-trigger kbd, .palette-input-row kbd {
  margin-left: auto; font-family: var(--mono); font-size: 10.5px; padding: 2px 6px;
  border: 1px solid var(--border); border-radius: 5px; color: var(--text-3); background: var(--surface-2);
}
.icon-btn {
  width: 34px; height: 34px; border-radius: 9px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text-2); display: grid; place-items: center;
  transition: .2s;
}
.icon-btn:hover { color: var(--accent); border-color: var(--border-strong); background: var(--surface-2); }
.sidebar-trigger { display: none; }
.topbar-actions > .icon-btn:nth-of-type(2) { display: none; }

/* ---------- sidebar ---------- */
.sidebar {
  position: fixed; top: 62px; bottom: 0; left: 0; width: 250px; z-index: 40;
  border-right: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(14px);
  overflow-y: auto; overscroll-behavior: contain;
  display: none;
}
.app.is-reader .sidebar:not(.drawer) { display: block; }
.sidebar-nav { padding: 20px 12px 46px; }
.sidebar-home {
  display: flex; align-items: center; gap: 9px; padding: 9px 12px; margin-bottom: 16px;
  font-size: 12.5px; color: var(--text-2); border-radius: 8px; transition: .2s;
}
.sidebar-home:hover { background: var(--surface); color: var(--text); }
.sidebar-home-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); }
.sidebar-part { margin-bottom: 4px; }
.part-head {
  width: 100%; display: flex; align-items: center; gap: 9px; padding: 8px 10px;
  background: none; border: 0; color: var(--text-3); text-align: left; border-radius: 8px;
  font-size: 11px; letter-spacing: .04em; transition: .2s;
}
.part-head:hover { color: var(--text); background: var(--surface); }
.part-index { font-family: var(--mono); font-size: 10.5px; color: var(--accent); opacity: .8; }
.part-name { flex: 1; font-weight: 600; }
.chev { transition: transform .2s; opacity: .6; }
.chev.open { transform: rotate(180deg); }
.part-chapters { overflow: hidden; padding-left: 6px; }
.chapter-link {
  position: relative; display: flex; align-items: baseline; gap: 9px;
  padding: 7px 10px 7px 16px; border-radius: 7px; font-size: 12.8px; color: var(--text-2);
  transition: color .18s, background .18s;
}
.chapter-link:hover { color: var(--text); background: var(--surface); }
.chapter-link.active { color: var(--accent); background: var(--accent-soft); font-weight: 600; }
.chapter-num { font-family: var(--mono); font-size: 10.5px; opacity: .65; flex: 0 0 auto; }
.chapter-title { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.active-bar {
  position: absolute; left: 3px; top: 6px; bottom: 6px; width: 2px; border-radius: 2px;
  background: var(--accent); box-shadow: 0 0 9px var(--accent);
}
.sidebar-extra { margin-top: 26px; padding: 16px 12px 0; border-top: 1px solid var(--border); }
.sidebar-extra-label { font-size: 10.5px; letter-spacing: .09em; color: var(--text-3); margin-bottom: 10px; }
.sidebar-extra a { display: block; padding: 6px 0; font-size: 12.3px; color: var(--text-3); transition: .2s; }
.sidebar-extra a:hover { color: var(--accent); }
.drawer-backdrop { position: fixed; inset: 0; z-index: 70; background: rgba(0, 0, 0, .55); }
.sidebar.drawer {
  display: block; top: 0; width: 290px; z-index: 80;
  background: var(--bg-elev); border-right: 1px solid var(--border-strong); box-shadow: var(--shadow);
}
.drawer-close { position: absolute; right: 14px; top: 14px; z-index: 2; }
.sidebar.drawer .sidebar-nav { padding-top: 58px; }

/* ---------- shared spotlight card ---------- */
.spotlight { position: relative; overflow: hidden; border-radius: 16px; }
.spotlight::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 0; opacity: 0;
  background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 50%), var(--accent-soft), transparent 68%);
  transition: opacity .28s;
}
.spotlight:hover::before { opacity: 1; }
.spotlight > * { position: relative; z-index: 1; }

/* ---------- home ---------- */
.page { min-height: calc(100vh - 62px); }
.home { max-width: 1180px; margin: 0 auto; padding: 0 32px; }
.hero { padding: 104px 0 62px; max-width: 860px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 13px; border-radius: 999px;
  border: 1px solid var(--border-strong); background: var(--surface); color: var(--text-2);
  font-size: 11.5px; letter-spacing: .04em; font-family: var(--mono);
}
.eyebrow svg { color: var(--accent); }
.hero-title {
  margin: 26px 0 22px; font-size: clamp(42px, 6.4vw, 76px); line-height: 1.08;
  font-weight: 800; letter-spacing: -0.045em;
}
.grad {
  background: linear-gradient(96deg, var(--accent) 8%, #ffd39a 46%, var(--accent-2) 92%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { margin: 0; font-size: 16px; line-height: 1.95; color: var(--text-2); }
.hero-sub code, .prose :not(pre) > code {
  font-family: var(--mono); font-size: .88em; padding: 2px 6px; border-radius: 5px;
  background: var(--surface-2); border: 1px solid var(--border); color: var(--accent);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.btn-primary, .btn-ghost {
  display: inline-flex; align-items: center; gap: 9px; height: 44px; padding: 0 22px;
  border-radius: 11px; font-size: 14px; font-weight: 600; transition: .22s;
}
.btn-primary {
  color: #14100c; border: 1px solid transparent;
  background: linear-gradient(135deg, #ffbb85, var(--accent) 60%, #f47a42);
  box-shadow: 0 10px 30px rgba(255, 149, 87, .22);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 38px rgba(255, 149, 87, .32); }
.btn-ghost { border: 1px solid var(--border-strong); color: var(--text-2); background: var(--surface); }
.btn-ghost:hover { color: var(--text); background: var(--surface-2); transform: translateY(-2px); }
.hero-note { display: flex; align-items: center; gap: 8px; margin-top: 26px; font-size: 12px; color: var(--text-3); font-family: var(--mono); }
.hero-note svg { color: var(--accent-2); }

.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.stat-card { padding: 22px 22px 20px; border: 1px solid var(--border); background: var(--surface); }
.stat-value { font-family: var(--mono); font-size: 34px; font-weight: 500; letter-spacing: -.04em; color: var(--text); }
.stat-suffix { color: var(--accent); font-size: 20px; margin-left: 2px; }
.stat-label { margin-top: 4px; font-size: 13px; font-weight: 600; color: var(--text-2); }
.stat-hint { margin-top: 8px; font-size: 11.5px; line-height: 1.6; color: var(--text-3); }

.section { padding: 86px 0 0; }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.section-kicker { font-family: var(--mono); font-size: 11px; letter-spacing: .16em; color: var(--accent); margin-bottom: 9px; }
.section-head h2 { margin: 0; font-size: 27px; font-weight: 700; letter-spacing: -.03em; }
.section-head p { margin: 0; max-width: 420px; font-size: 13px; line-height: 1.7; color: var(--text-3); }
.part-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
.part-card { height: 100%; border: 1px solid var(--border); background: var(--surface); transition: transform .25s, border-color .25s, box-shadow .25s; }
.part-card:hover { transform: translateY(-4px); border-color: var(--border-strong); box-shadow: var(--shadow); }
.part-card-link { display: flex; flex-direction: column; height: 100%; padding: 22px; min-height: 232px; }
.part-watermark {
  position: absolute; right: 10px; top: -22px; font-family: var(--mono); font-size: 108px;
  font-weight: 500; line-height: 1; color: var(--text); opacity: .035; pointer-events: none; user-select: none;
}
.part-card-top { display: flex; align-items: center; justify-content: space-between; }
.part-badge { font-family: var(--mono); font-size: 11px; color: var(--accent); border: 1px solid var(--border-strong); padding: 2px 8px; border-radius: 6px; }
.part-count { font-size: 11px; color: var(--text-3); }
.part-card h3 { margin: 18px 0 12px; font-size: 19px; font-weight: 700; letter-spacing: -.02em; }
.part-card ul { list-style: none; margin: 0; padding: 0; flex: 1; }
.part-card li { font-size: 12.5px; color: var(--text-2); padding: 3px 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.part-card li span { font-family: var(--mono); font-size: 10.5px; color: var(--text-3); margin-right: 7px; }
.part-card li.more { color: var(--text-3); font-size: 11.5px; }
.part-go { display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; font-size: 12px; font-weight: 600; color: var(--accent); }
.part-go svg { transition: transform .2s; }
.part-card:hover .part-go svg { transform: translateX(4px); }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 15px; }
.feature-card { padding: 26px; border: 1px solid var(--border); background: var(--surface); min-height: 200px; }
.feature-icon { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 11px; background: var(--accent-soft); color: var(--accent); }
.tone-teal .feature-icon { background: var(--teal-soft); color: var(--accent-2); }
.tone-violet .feature-icon { background: rgba(156, 156, 255, .12); color: var(--accent-3); }
.feature-card h3 { margin: 18px 0 10px; font-size: 16px; font-weight: 700; }
.feature-card p { margin: 0; font-size: 13px; line-height: 1.8; color: var(--text-3); }

.extra-section { padding-bottom: 70px; }
.extra-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.extra-link {
  display: flex; align-items: center; gap: 12px; padding: 15px 18px; border: 1px solid var(--border);
  border-radius: 11px; background: var(--surface); font-size: 13.5px; color: var(--text-2); transition: .2s;
}
.extra-link svg:first-child { color: var(--accent); }
.extra-link svg:last-child { margin-left: auto; opacity: 0; transform: translateX(-6px); transition: .2s; }
.extra-link:hover { color: var(--text); border-color: var(--border-strong); background: var(--surface-2); }
.extra-link:hover svg:last-child { opacity: 1; transform: translateX(0); }
.footer {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 26px 0 44px; border-top: 1px solid var(--border); font-size: 11.5px; color: var(--text-3);
}
.footer-brand { display: inline-flex; align-items: center; gap: 7px; font-family: var(--mono); color: var(--text-2); }

/* ---------- reader layout ---------- */
@media (min-width: 1180px) { .app.is-reader .page { margin-left: 250px; } }
.reader-layout {
  max-width: 1240px; margin: 0 auto; padding: 40px 44px 110px;
  display: grid; grid-template-columns: minmax(0, 1fr) 210px; gap: 56px;
}
.doc-layout { grid-template-columns: minmax(0, 1fr); max-width: 900px; }
.reader-main { min-width: 0; }
.reader-breadcrumb { display: flex; align-items: center; gap: 9px; font-size: 11.5px; color: var(--text-3); margin-bottom: 30px; }
.reader-breadcrumb a:hover { color: var(--accent); }
.crumb-current { color: var(--text-2); }
.reader-head { position: relative; padding: 0 0 34px; margin-bottom: 38px; border-bottom: 1px solid var(--border); }
.reader-watermark {
  position: absolute; right: 0; top: -34px; font-family: var(--mono); font-size: 128px; line-height: 1;
  font-weight: 500; color: var(--text); opacity: .035; pointer-events: none; user-select: none;
}
.reader-kicker { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.reader-part-badge { font-size: 11px; font-weight: 600; color: var(--accent); background: var(--accent-soft); border: 1px solid var(--border); padding: 4px 10px; border-radius: 6px; }
.reader-num { font-family: var(--mono); font-size: 10.5px; letter-spacing: .12em; color: var(--text-3); }
.reader-head h1 { margin: 0 0 14px; font-size: clamp(30px, 3.6vw, 43px); font-weight: 800; letter-spacing: -.04em; line-height: 1.2; }
.reader-desc { margin: 0; font-size: 14px; line-height: 1.8; color: var(--text-2); max-width: 660px; }
.reader-meta { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 22px; font-size: 11.5px; color: var(--text-3); font-family: var(--mono); }
.reader-meta span { display: inline-flex; align-items: center; gap: 6px; }

.toc-panel { position: relative; }
.toc-inner { position: sticky; top: 96px; max-height: calc(100vh - 130px); overflow-y: auto; padding-right: 6px; }
.toc-title { font-size: 11px; letter-spacing: .12em; color: var(--text-3); margin-bottom: 14px; font-family: var(--mono); }
.toc-list { display: flex; flex-direction: column; gap: 2px; border-left: 1px solid var(--border); }
.toc-link {
  display: flex; align-items: baseline; gap: 9px; padding: 6px 0 6px 13px; margin-left: -1px;
  font-size: 12px; line-height: 1.55; color: var(--text-3); border-left: 2px solid transparent; transition: .2s;
}
.toc-link:hover { color: var(--text-2); }
.toc-link.active { color: var(--accent); border-left-color: var(--accent); }
.toc-dot { width: 4px; height: 4px; border-radius: 50%; background: currentColor; opacity: .5; flex: 0 0 auto; transform: translateY(-2px); }
.toc-foot { margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--border); font-size: 12px; }
.toc-foot a:hover { color: var(--accent); }

.chapter-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 70px; }
.chapter-nav-card {
  display: flex; flex-direction: column; gap: 10px; padding: 20px; min-height: 96px;
  border: 1px solid var(--border); border-radius: 13px; background: var(--surface); transition: .22s;
}
.chapter-nav-card:hover { border-color: var(--border-strong); background: var(--surface-2); transform: translateY(-3px); }
.chapter-nav-card.next { text-align: right; }
.chapter-nav-card.disabled { visibility: hidden; }
.nav-dir { display: inline-flex; align-items: center; gap: 6px; font-size: 11px; color: var(--text-3); font-family: var(--mono); }
.chapter-nav-card.next .nav-dir { justify-content: flex-end; }
.chapter-nav-card strong { font-size: 14.5px; font-weight: 600; color: var(--text); }
.reader-footnote { display: flex; align-items: center; gap: 7px; margin-top: 26px; font-size: 11.5px; color: var(--text-3); font-family: var(--mono); }
.doc-others { margin-top: 66px; padding-top: 26px; border-top: 1px solid var(--border); display: flex; flex-direction: column; gap: 10px; }
.doc-others-title { font-size: 11px; letter-spacing: .1em; color: var(--text-3); font-family: var(--mono); margin-bottom: 4px; }
.doc-others a { display: inline-flex; align-items: center; gap: 9px; font-size: 13px; color: var(--text-2); }
.doc-others a:hover { color: var(--accent); }
.doc-others .back-home { margin-top: 12px; color: var(--accent); }

/* ---------- prose / markdown ---------- */
.prose { max-width: 820px; font-size: 15px; line-height: 1.95; color: var(--text-2); }
.prose > :first-child { margin-top: 0; }
.prose p { margin: 0 0 17px; }
.prose strong { color: var(--text); font-weight: 650; }
.prose em { color: var(--text); }
.prose-h2, .prose-h3 { position: relative; scroll-margin-top: 92px; color: var(--text); letter-spacing: -.02em; }
.prose-h2 {
  font-size: 24px; font-weight: 700; margin: 58px 0 20px; padding-bottom: 13px;
  border-bottom: 1px solid var(--border);
}
.prose-h3 { font-size: 18px; font-weight: 650; margin: 36px 0 15px; }
.h-anchor {
  position: absolute; left: -22px; top: 50%; transform: translateY(-50%);
  font-family: var(--mono); font-size: 15px; color: var(--accent); opacity: 0; transition: .2s;
}
.prose-h2:hover .h-anchor, .prose-h3:hover .h-anchor { opacity: .8; }
.prose ul, .prose ol { margin: 0 0 20px; padding-left: 24px; }
.prose li { margin: 7px 0; padding-left: 3px; }
.prose li::marker { color: var(--accent); font-family: var(--mono); font-size: .9em; }
.prose li > ul, .prose li > ol { margin: 8px 0 8px; }
.prose li .code-block { margin: 14px 0 18px; }
.prose a.md-link { color: var(--accent); text-decoration: underline; text-decoration-style: dotted; text-underline-offset: 3px; text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent); }
.prose a.md-link:hover { color: var(--text); text-decoration-color: var(--accent); }
.prose font[style] { color: var(--text-3) !important; font-size: .93em; line-height: 1.85; }
.prose blockquote.rule-callout {
  margin: 26px 0; padding: 16px 20px; border-left: 3px solid var(--accent); border-radius: 0 10px 10px 0;
  background: linear-gradient(90deg, var(--accent-soft), transparent 82%);
}
.prose blockquote.rule-callout p { margin: 0 0 8px; }
.prose blockquote.rule-callout p:last-child { margin-bottom: 0; }
.prose blockquote.rule-callout strong { color: var(--accent); }
.prose .verdict { padding: 9px 15px; border-radius: 0 8px 8px 0; margin: 20px 0 14px; }
.verdict-bad { border-left: 3px solid var(--danger); background: color-mix(in srgb, var(--danger) 7%, transparent); }
.verdict-good { border-left: 3px solid var(--accent-2); background: var(--teal-soft); }
.prose hr { height: 1px; border: 0; background: var(--border); margin: 40px 0; }
.table-scroll { overflow-x: auto; margin: 22px 0 26px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.prose table { width: 100%; border-collapse: collapse; font-size: 13.2px; line-height: 1.7; }
.prose th, .prose td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
.prose th { color: var(--text); font-weight: 650; background: var(--surface-2); font-size: 12.5px; }
.prose td { color: var(--text-2); }
.prose tr:last-child td { border-bottom: 0; }
.prose tbody tr:hover td { background: var(--surface); color: var(--text); }
.prose table code { font-size: .86em; }
.prose img { max-width: 100%; border-radius: 10px; }

/* ---------- code blocks ---------- */
.code-block {
  margin: 22px 0; border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
  background: var(--bg-code); transition: border-color .2s;
}
.code-block:hover { border-color: var(--border-strong); }
.code-head {
  display: flex; align-items: center; gap: 10px; height: 36px; padding: 0 12px;
  background: var(--bg-elev); border-bottom: 1px solid var(--border);
}
.code-dots { display: flex; gap: 5px; }
.code-dots i { width: 8px; height: 8px; border-radius: 50%; background: var(--border-strong); }
.code-dots i:first-child { background: color-mix(in srgb, var(--accent) 70%, transparent); }
.code-dots i:nth-child(2) { background: color-mix(in srgb, #e8c46a 60%, transparent); }
.code-dots i:nth-child(3) { background: color-mix(in srgb, var(--accent-2) 55%, transparent); }
.code-lang { font-family: var(--mono); font-size: 10.5px; letter-spacing: .08em; color: var(--text-3); text-transform: uppercase; }
.code-copy {
  margin-left: auto; display: inline-flex; align-items: center; gap: 6px; padding: 4px 9px;
  border: 1px solid transparent; border-radius: 6px; background: transparent; color: var(--text-3);
  font-size: 11px; opacity: 0; transition: .2s;
}
.code-block:hover .code-copy, .code-copy:focus-visible { opacity: 1; }
.code-copy:hover { color: var(--text); background: var(--surface-2); border-color: var(--border); }
.code-body { margin: 0; overflow-x: auto; padding: 16px 18px; font-family: var(--mono); font-size: 12.8px; line-height: 1.8; }
.code-body code { font-family: var(--mono); }
.code-body .shiki { background: transparent !important; }
.code-body .shiki span { color: var(--shiki-light); }
html[data-theme="dark"] .code-body .shiki span { color: var(--shiki-dark); }
.code-body pre.shiki { margin: 0; }

/* ---------- command palette ---------- */
.palette-backdrop {
  position: fixed; inset: 0; z-index: 110; display: flex; justify-content: center; align-items: flex-start;
  padding: 13vh 20px 20px; background: rgba(3, 5, 9, .68); backdrop-filter: blur(7px);
}
.palette {
  width: min(620px, 100%); border: 1px solid var(--border-strong); border-radius: 16px;
  background: color-mix(in srgb, var(--bg-elev) 96%, transparent); box-shadow: var(--shadow); overflow: hidden;
}
.palette-input-row { display: flex; align-items: center; gap: 12px; padding: 16px 18px; border-bottom: 1px solid var(--border); color: var(--text-3); }
.palette-input-row input { flex: 1; border: 0; outline: 0; background: transparent; color: var(--text); font-size: 15px; }
.palette-input-row input::placeholder { color: var(--text-3); }
.palette-results { max-height: 380px; overflow-y: auto; padding: 8px; }
.palette-hint, .palette-empty { padding: 20px 14px; font-size: 12.5px; color: var(--text-3); text-align: center; }
.palette-hit {
  width: 100%; display: flex; align-items: flex-start; gap: 12px; padding: 10px 12px;
  border: 1px solid transparent; border-radius: 10px; background: transparent; text-align: left; color: var(--text-2);
}
.palette-hit.selected { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 25%, transparent); }
.hit-kind { flex: 0 0 auto; margin-top: 2px; font-family: var(--mono); font-size: 10px; color: var(--accent); border: 1px solid var(--border-strong); border-radius: 5px; padding: 1px 5px; }
.hit-main { min-width: 0; flex: 1; display: flex; flex-direction: column; gap: 3px; }
.hit-title { font-size: 13.5px; font-weight: 600; color: var(--text); }
.hit-sub { font-size: 11px; color: var(--text-3); }
.hit-snippet { font-size: 11.5px; color: var(--text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hit-arrow { opacity: .35; }
.palette-hit > svg { margin-top: 4px; color: var(--accent); flex: 0 0 auto; }
.palette-footer { display: flex; gap: 16px; padding: 10px 18px; border-top: 1px solid var(--border); font-size: 10.5px; color: var(--text-3); font-family: var(--mono); }

/* ---------- responsive ---------- */
@media (min-width: 1181px) { .sidebar-trigger { display: none; } }
@media (max-width: 1180px) {
  .app.is-reader .sidebar:not(.drawer) { display: none; }
  .sidebar-trigger { display: grid; }
  .reader-layout { grid-template-columns: minmax(0, 1fr); max-width: 900px; padding: 36px 32px 90px; }
  .toc-panel { display: none; }
  .prose { max-width: 100%; }
}
@media (max-width: 900px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .part-grid, .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .section-head { flex-direction: column; align-items: flex-start; }
  .hero { padding-top: 76px; }
}
@media (max-width: 640px) {
  .topbar-inner { padding: 0 16px; gap: 10px; }
  .brand-tag { display: none; }
  .search-trigger { display: none; }
  .topbar-actions > .icon-btn:nth-of-type(2) { display: grid; }
  .home { padding: 0 20px; }
  .hero { padding: 60px 0 44px; }
  .hero-title { font-size: 40px; }
  .wide-only { display: none; }
  .stats-row, .part-grid, .feature-grid, .extra-grid { grid-template-columns: 1fr; }
  .section { padding-top: 62px; }
  .reader-layout { padding: 28px 20px 80px; }
  .prose-h2 { font-size: 21px; }
  .h-anchor { display: none; }
  .chapter-nav { grid-template-columns: 1fr; }
  .chapter-nav-card.disabled { display: none; }
  .footer { flex-direction: column; align-items: flex-start; }
}

/* ---------- highlight.js tokens ---------- */
.hljs { background: transparent !important; color: var(--text-2); }
.hljs-comment, .hljs-quote { color: var(--code-comment); font-style: italic; }
.hljs-keyword, .hljs-selector-tag, .hljs-literal, .hljs-type, .hljs-built_in { color: var(--code-keyword); }
.hljs-string, .hljs-regexp, .hljs-addition, .hljs-attribute { color: var(--code-string); }
.hljs-number, .hljs-symbol, .hljs-bullet, .hljs-meta { color: var(--code-number); }
.hljs-title, .hljs-title.function_, .hljs-section, .hljs-name, .hljs-attr, .hljs-selector-class { color: var(--code-func); }
.hljs-variable, .hljs-params, .hljs-template-variable { color: var(--text-2); }
.hljs-emphasis { font-style: italic; }
.hljs-strong { font-weight: 700; }