/* 小刘BOT — site styles.
   Layout: topbar → hero switcher → briefs → project rail → articles → footer; square corners,
   hairline grid, Klein blue as the single signature colour. Chinese text uses system fonts. */

@font-face { font-family: "Archivo LQ"; font-style: normal; font-weight: 800; font-stretch: 125%; font-display: swap; src: url("fonts/archivo-wide.woff2") format("woff2"); unicode-range: U+0000-00FF, U+2000-206F, U+2191, U+2193, U+2212; }
@font-face { font-family: "Geist Mono LQ"; font-style: normal; font-weight: 400 600; font-display: swap; src: url("fonts/geist-mono.woff2") format("woff2"); unicode-range: U+0000-00FF, U+2000-206F, U+2191, U+2193, U+2212; }

:root {
  --bg: #f2f3f5; --surface: #ffffff; --ink: #0c0e13; --ink2: #3a404b; --mute: #646c79; --line: #dadde3; --rule: #0c0e13;
  --accent: #002fa7; --accent-ink: #ffffff; --accent-soft: #e5eaf7;
  --hero-bg: #002fa7; --hero-fg: #ffffff; --hero-mute: rgba(255,255,255,.76); --hero-line: rgba(255,255,255,.22); --hero-num: rgba(255,255,255,.42);
  --pc-hover-bg: #002fa7; --pc-hover-fg: #ffffff; --pc-hover-mute: rgba(255,255,255,.76);
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", "Segoe UI", Roboto, sans-serif;
  --serif: "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", "SimSun", Georgia, serif;
  --wide: "Archivo LQ", var(--sans);
  --mono: "Geist Mono LQ", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --read-font: var(--sans);
  --fs: 17px;
  --measure: 720px;
  color-scheme: light;
}
/* English pages: Latin fonts first, or CJK fonts draw quotes and dashes at full width. */
:root:lang(en) {
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --serif: Georgia, "Times New Roman", "Songti SC", "Noto Serif CJK SC", "SimSun", serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b0c10; --surface: #121419; --ink: #eceef2; --ink2: #b8bdc7; --mute: #8f96a2; --line: #262a33; --rule: #eceef2;
    --accent: #8aa4ff; --accent-ink: #0b0c10; --accent-soft: #151d3d;
    --hero-bg: #1a3cb8; --pc-hover-bg: #1a3cb8;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0b0c10; --surface: #121419; --ink: #eceef2; --ink2: #b8bdc7; --mute: #8f96a2; --line: #262a33; --rule: #eceef2;
  --accent: #8aa4ff; --accent-ink: #0b0c10; --accent-soft: #151d3d;
  --hero-bg: #1a3cb8; --pc-hover-bg: #1a3cb8;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 16px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.65 var(--sans); text-rendering: optimizeLegibility; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
img { max-width: 100%; height: auto; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
[hidden] { display: none !important; }
.sr { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 12px; top: -48px; z-index: 50; background: var(--ink); color: var(--surface); padding: 8px 12px; }
.skip:focus { top: 12px; }
.wrap { max-width: 1320px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
.main { min-height: 60vh; }

/* ---------- top bar ---------- */
.top { background: var(--surface); border-bottom: 1px solid var(--line); position: relative; z-index: 20; }
.top-in { display: flex; align-items: center; gap: 24px; height: 58px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 16px; white-space: nowrap; }
.brand i { width: 26px; height: 26px; background: var(--ink); color: var(--surface); display: grid; place-items: center; font: 800 11px/1 var(--wide); font-stretch: 125%; font-style: normal; letter-spacing: .02em; }
.nav { display: flex; gap: 2px; height: 100%; }
.nav-item { position: relative; display: flex; }
.nav-link { display: flex; align-items: center; padding: 0 12px; font-size: 14.5px; color: var(--ink2); border: 0; background: none; border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; }
.nav-link:hover { color: var(--ink); }
.nav-link.on { color: var(--ink); font-weight: 700; border-bottom-color: var(--accent); }
.submenu { position: absolute; top: 100%; left: 0; min-width: 200px; background: var(--surface); border: 1px solid var(--line); box-shadow: 0 16px 32px -20px rgba(12,14,19,.35); display: none; flex-direction: column; padding: 4px 0; }
.nav-item.has-sub:hover .submenu, .nav-item.has-sub:focus-within .submenu, .nav-item.open .submenu { display: flex; }
.sub-link { display: flex; justify-content: space-between; gap: 16px; padding: 9px 14px; font-size: 14px; border: 0; background: none; text-align: left; white-space: nowrap; }
.sub-link span { font: 11.5px/1.8 var(--mono); color: var(--mute); }
.sub-link:hover { background: var(--accent); color: var(--accent-ink); }
.sub-link:hover span { color: inherit; }
.top-r { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.search { position: relative; display: flex; align-items: center; border: 1px solid var(--line); background: var(--bg); width: 260px; }
.search input { border: 0; background: transparent; padding: 7px 10px; font: inherit; font-size: 13.5px; color: var(--ink); width: 100%; outline: none; min-width: 0; }
.search input::placeholder { color: var(--mute); }
.search:focus-within { border-color: var(--ink); }
kbd { font: 11px/1.4 var(--mono); border: 1px solid var(--line); padding: 0 5px; color: var(--mute); background: var(--surface); margin-right: 8px; }
.search-pop { position: absolute; top: calc(100% + 6px); right: -1px; width: min(560px, calc(100vw - 32px)); max-height: 70vh; overflow: auto; background: var(--surface); border: 1px solid var(--ink); box-shadow: 0 24px 48px -24px rgba(12,14,19,.45); z-index: 30; }
.search-pop a { display: grid; grid-template-columns: 64px minmax(0,1fr); gap: 2px 12px; padding: 10px 14px; border-bottom: 1px solid var(--line); }
.search-pop a:last-child { border-bottom: 0; }
.search-pop a:hover, .search-pop a.sel { background: var(--accent-soft); }
.search-pop em { font: 600 11px/1.8 var(--mono); color: var(--accent); font-style: normal; }
.search-pop b { font-size: 14px; line-height: 1.5; }
.search-pop small { grid-column: 2; font: 11.5px/1.5 var(--mono); color: var(--mute); }
.search-pop mark { background: none; color: var(--accent); font-weight: 800; }
.search-pop .empty { padding: 14px; font-size: 13px; color: var(--mute); }
.lang { display: flex; border: 1px solid var(--line); }
.lang a { font: 600 12px/1 var(--mono); padding: 7px 9px; color: var(--mute); }
.lang a.on { background: var(--ink); color: var(--surface); }
.nav-open { display: none; border: 1px solid var(--line); background: var(--surface); width: 38px; height: 34px; padding: 0; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.nav-open span:not(.sr) { width: 16px; height: 2px; background: var(--ink); display: block; }

/* ---------- buttons, chips ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 11px 18px; font-size: 14px; font-weight: 700; border: 1px solid currentColor; background: transparent; white-space: nowrap; transition: transform .15s; }
.btn:hover { transform: translateY(-1px); }
.btn.solid { background: var(--hero-fg); color: var(--hero-bg); border-color: var(--hero-fg); }
.btn.ink { background: var(--ink); color: var(--surface); border-color: var(--ink); }
.btn.small { padding: 7px 12px; font-size: 13px; }
.more { font-size: 13.5px; font-weight: 700; display: inline-flex; gap: 6px; align-items: center; white-space: nowrap; border-bottom: 1px solid currentColor; padding-bottom: 1px; }
.more:hover { color: var(--accent); }
.tag { display: inline-block; font: 11.5px/1 var(--mono); border: 1px solid var(--line); padding: 4px 7px; color: var(--ink2); background: var(--surface); }
a.tag:hover { border-color: var(--accent); color: var(--accent); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips a, .chips button { border: 1px solid var(--line); background: var(--surface); padding: 6px 11px; font-size: 13px; line-height: 1.3; }
.chips a:hover, .chips button:hover { border-color: var(--ink); }
.chips button[aria-pressed="true"] { background: var(--ink); color: var(--surface); border-color: var(--ink); }
.chips sup { font: 10.5px/1 var(--mono); margin-left: 4px; opacity: .65; vertical-align: 0; }
.seg { display: flex; border: 1px solid var(--line); background: var(--surface); }
.seg button { border: 0; background: transparent; padding: 7px 11px; font-size: 13px; color: var(--mute); }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--surface); }

/* ---------- hero ---------- */
.hero { margin-top: 20px; background: var(--hero-bg); color: var(--hero-fg); position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(var(--hero-line) 1px, transparent 1px), linear-gradient(90deg, var(--hero-line) 1px, transparent 1px); background-size: 56px 56px; opacity: .35; -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 70%); mask-image: linear-gradient(90deg, transparent 0, #000 70%); }
.h-tabs { display: flex; border-bottom: 1px solid var(--hero-line); position: relative; z-index: 1; }
.h-tabs button { border: 0; background: transparent; color: var(--hero-mute); padding: 16px 22px; font-size: 14.5px; font-weight: 700; border-right: 1px solid var(--hero-line); position: relative; }
.h-tabs button[aria-selected="true"] { color: var(--hero-fg); background: rgba(255,255,255,.08); }
.h-tabs button[aria-selected="true"]::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 3px; background: var(--hero-fg); }
.h-meta { margin-left: auto; align-self: center; padding: 0 22px; font: 12px/1 var(--mono); color: var(--hero-mute); }
.h-body { position: relative; z-index: 1; }
.h-pane { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.05fr); }
.h-left { padding: 36px 40px 40px; display: flex; flex-direction: column; gap: 18px; border-right: 1px solid var(--hero-line); }
.h-kick { font: 12.5px/1.5 var(--mono); color: var(--hero-mute); display: flex; gap: 6px 14px; flex-wrap: wrap; }
.h-title { margin: 0; font-size: clamp(34px, 4.4vw, 58px); line-height: 1.08; font-weight: 900; letter-spacing: -.01em; }
.h-lede { margin: 0; font-size: 16.5px; line-height: 1.7; color: var(--hero-mute); max-width: 46ch; }
.h-lede b { color: var(--hero-fg); }
.h-acts { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 4px; }
.h-step { display: flex; align-items: center; margin-top: auto; border: 1px solid var(--hero-line); align-self: flex-start; }
.h-step button { border: 0; background: transparent; color: var(--hero-fg); padding: 8px 12px; font: 600 12.5px/1 var(--mono); }
.h-step button:disabled { opacity: .35; cursor: default; }
.h-step span { font: 600 13px/1 var(--mono); padding: 8px 12px; border-left: 1px solid var(--hero-line); border-right: 1px solid var(--hero-line); }
.h-right { padding: 22px 0; }
.topic { display: grid; grid-template-columns: 76px minmax(0,1fr); align-items: baseline; padding: 14px 40px 14px 28px; border-bottom: 1px solid var(--hero-line); }
.topic:last-child { border-bottom: 0; }
.topic em { font: 800 30px/1 var(--wide); font-stretch: 125%; font-style: normal; color: var(--hero-num); font-variant-numeric: tabular-nums; }
.topic strong { font-size: 16.5px; line-height: 1.55; }
.topic:hover em { color: var(--hero-fg); }
.topic:hover strong { text-decoration: underline; text-underline-offset: 4px; }
.kpis { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); border-top: 1px solid var(--hero-line); border-left: 1px solid var(--hero-line); }
.kpis div { padding: 12px 14px; border-right: 1px solid var(--hero-line); border-bottom: 1px solid var(--hero-line); }
.kpis b { display: block; font: 800 26px/1.15 var(--wide); font-stretch: 112%; font-variant-numeric: tabular-nums; }
.kpis span { font: 11.5px/1.4 var(--mono); color: var(--hero-mute); }
.rank { display: grid; grid-template-columns: 76px minmax(0,1fr) 110px; gap: 0 12px; align-items: center; padding: 13px 40px 13px 28px; border-bottom: 1px solid var(--hero-line); }
.rank:last-child { border-bottom: 0; }
.rank em { font: 800 30px/1 var(--wide); font-stretch: 125%; font-style: normal; color: var(--hero-num); }
.rank strong { display: block; font-size: 16px; }
.rank small { font: 11.5px/1.5 var(--mono); color: var(--hero-mute); }
.rank .spark { width: 110px; height: 30px; }

/* ---------- sections ---------- */
.sec { margin-top: 56px; }
.sec-h { display: flex; align-items: flex-end; gap: 16px; border-top: 2px solid var(--rule); padding-top: 14px; margin-bottom: 18px; flex-wrap: wrap; }
.sec-h h2 { margin: 0; font-size: 30px; font-weight: 900; line-height: 1; }
.sec-h .cnt { font: 12.5px/1 var(--mono); color: var(--mute); padding-bottom: 3px; }
.sec-h .r { margin-left: auto; display: flex; gap: 14px; align-items: center; }
.sq { width: 36px; height: 36px; border: 1px solid var(--line); background: var(--surface); display: grid; place-items: center; font-size: 16px; }
.sq:hover { border-color: var(--ink); }
.brief-grid { display: grid; grid-template-columns: minmax(0,1fr) 300px; gap: 32px; }
.issue { display: grid; grid-template-columns: 108px minmax(0,1fr); gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.issue .dt b { display: block; font: 800 24px/1 var(--wide); font-stretch: 112%; font-variant-numeric: tabular-nums; }
.issue .dt span { display: block; font: 11.5px/1.6 var(--mono); color: var(--mute); margin-top: 6px; }
.issue h3 { margin: 0 0 8px; font-size: 16.5px; line-height: 1.55; font-weight: 700; }
.issue h3 a:hover { color: var(--accent); }
.issue ol { margin: 0; padding: 0; list-style: none; display: grid; gap: 3px; }
.issue li { display: grid; grid-template-columns: 26px minmax(0,1fr); font-size: 14px; line-height: 1.6; color: var(--ink2); }
.issue li a:hover { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.issue li i { font: 600 11.5px/1.9 var(--mono); font-style: normal; color: var(--accent); }
.issue .rest { margin-top: 3px; }
.issue .tog { border: 0; background: none; padding: 6px 0 0; font: 600 12px/1 var(--mono); color: var(--mute); }
.issue .tog:hover { color: var(--accent); }
.issue.kf { background: var(--accent-soft); box-shadow: -12px 0 0 var(--accent-soft), 12px 0 0 var(--accent-soft); }
.side-box { border: 1px solid var(--line); background: var(--surface); margin-bottom: 16px; }
.side-box h3 { margin: 0; padding: 12px 14px; font-size: 13px; font-weight: 700; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; gap: 8px; }
.side-box h3 span { font: 400 11.5px/1.6 var(--mono); color: var(--mute); }
.side-box h3 span a:hover { color: var(--accent); }
.side-box .row { display: flex; justify-content: space-between; padding: 10px 14px; border-bottom: 1px solid var(--line); font-size: 14px; }
.side-box .row:last-child { border-bottom: 0; }
.side-box .row:hover, .side-box .row.on { background: var(--accent); color: var(--accent-ink); }
.side-box .p { padding: 12px 14px; font-size: 13px; color: var(--mute); line-height: 1.65; margin: 0; }
.side-box .chips { padding: 12px 14px; }
.side-box .side-list { padding: 0 14px; }
.copy { display: flex; border-top: 1px solid var(--line); }
.copy code { flex: 1; min-width: 0; padding: 10px 14px; font: 12px/1.4 var(--mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.copy button { border: 0; border-left: 1px solid var(--line); background: var(--ink); color: var(--surface); font-size: 12.5px; padding: 0 14px; }

/* project cards */
.rail { display: grid; grid-auto-flow: column; grid-auto-columns: 252px; overflow-x: auto; scroll-snap-type: x mandatory; border-left: 1px solid var(--line); scrollbar-width: thin; }
.pc { scroll-snap-align: start; background: var(--surface); border: 1px solid var(--line); border-left: 0; min-height: 356px; padding: 18px 18px 16px; display: flex; flex-direction: column; gap: 10px; transition: background .18s, color .18s; color: var(--ink); }
.pc:hover { background: var(--pc-hover-bg); color: var(--pc-hover-fg); --mute: var(--pc-hover-mute); --line2: rgba(255,255,255,.25); }
.pc-k { font: 11.5px/1.5 var(--mono); color: var(--mute); }
.pc h3 { margin: 0; font-size: 19px; line-height: 1.25; font-weight: 900; }
.pc p { margin: 0; font-size: 13.5px; line-height: 1.7; color: var(--mute); display: -webkit-box; -webkit-line-clamp: 6; -webkit-box-orient: vertical; overflow: hidden; }
.pc-s { margin-top: auto; display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); border-top: 1px solid var(--line2, var(--line)); padding-top: 10px; }
.pc-s b { display: block; font: 800 17px/1.2 var(--wide); font-stretch: 112%; font-variant-numeric: tabular-nums; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pc-s span { font: 10.5px/1.4 var(--mono); color: var(--mute); }
.pc .spark { width: 100%; height: 34px; display: block; color: var(--accent); }
.pc:hover .spark { color: currentColor; }
.pc-none { margin-top: auto; font: 11.5px/1.5 var(--mono); color: var(--mute); border-top: 1px solid var(--line2, var(--line)); padding-top: 10px; }
.grid-pc { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px,1fr)); border-left: 1px solid var(--line); border-top: 1px solid var(--line); }
.grid-pc .pc { border-top: 0; min-height: 380px; }
.grid-pc .pc p { -webkit-line-clamp: 8; }

/* article rows */
.arow { display: grid; grid-template-columns: 108px minmax(0,1fr) 28px; gap: 20px; padding: 18px 0; border-bottom: 1px solid var(--line); align-items: start; }
.arow .d { font: 600 13px/1.7 var(--mono); color: var(--mute); font-variant-numeric: tabular-nums; }
.arow h3 { margin: 0 0 6px; font-size: 17px; line-height: 1.5; font-weight: 700; }
.arow p { margin: 0; font-size: 14px; line-height: 1.7; color: var(--mute); max-width: 80ch; }
.arow .tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.arow .go { font-size: 18px; color: var(--mute); padding-top: 2px; transition: transform .15s; }
.arow:hover h3 { color: var(--accent); }
.arow:hover .go { color: var(--accent); transform: translateX(3px); }

/* ---------- footer ---------- */
.foot { margin-top: 72px; background: #0c0e13; color: #f2f3f5; padding-top: 40px; padding-bottom: max(28px, env(safe-area-inset-bottom, 0px)); }
.foot-in { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 28px; }
.foot h2 { margin: 0 0 12px; font: 600 11.5px/1 var(--mono); letter-spacing: .08em; opacity: .6; }
.foot a { display: block; font-size: 14px; padding: 3px 0; opacity: .88; }
.foot a:hover { opacity: 1; text-decoration: underline; }
.foot p { margin: 0; font-size: 13.5px; opacity: .7; line-height: 1.7; max-width: 36ch; }
.foot .brand { margin-bottom: 10px; }
.foot .brand i { background: #f2f3f5; color: #0c0e13; }
.foot-base { grid-column: 1 / -1; border-top: 1px solid rgba(255,255,255,.18); padding-top: 16px; font: 12px/1.6 var(--mono); display: flex; gap: 8px 20px; flex-wrap: wrap; align-items: baseline; }
.foot-base > span { opacity: .6; }
.privacy { font-family: var(--sans); font-size: 12.5px; }
.privacy summary { cursor: pointer; opacity: .75; }
.privacy p { margin: 8px 0; max-width: 72ch; }
.privacy button { border: 1px solid rgba(255,255,255,.4); background: none; color: inherit; padding: 4px 8px; font-size: 12px; }

/* ---------- page headers & lists ---------- */
.ph { padding-top: 36px; }
.ph-in { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 24px; align-items: end; border-bottom: 2px solid var(--rule); padding-bottom: 20px; }
.ph h1 { margin: 0 0 10px; font-size: clamp(36px, 5.6vw, 68px); line-height: 1.05; font-weight: 900; letter-spacing: -.02em; text-wrap: balance; }
.ph p { margin: 0; font-size: 15.5px; color: var(--mute); max-width: 64ch; line-height: 1.7; }
.ph .chips, .ph .kstrip { margin-top: 18px; }
.stamp { font: 12px/1.4 var(--mono); color: var(--mute); }
.field { display: flex; align-items: center; border: 1px solid var(--ink); background: var(--surface); min-width: 300px; }
.field input { border: 0; background: transparent; padding: 11px 12px; font: inherit; font-size: 14px; color: var(--ink); flex: 1; min-width: 0; outline: none; }
.field > span { padding: 0 12px; font: 12px/1 var(--mono); color: var(--mute); white-space: nowrap; }
.field button { border: 0; border-left: 1px solid var(--ink); background: var(--ink); color: var(--surface); padding: 11px 16px; font-size: 14px; }
.kstrip { display: grid; grid-template-columns: repeat(6, minmax(0,1fr)); border-left: 1px solid var(--line); border-top: 1px solid var(--line); background: var(--surface); }
.kstrip div { padding: 14px 16px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.kstrip b { display: block; font: 800 28px/1.1 var(--wide); font-stretch: 112%; font-variant-numeric: tabular-nums; }
.kstrip span { font: 11.5px/1.5 var(--mono); color: var(--mute); }
.toolbar { display: flex; gap: 12px; align-items: center; justify-content: space-between; flex-wrap: wrap; margin: 22px 0 14px; }
.list { margin-top: 12px; }
.empty { padding: 30px 0; color: var(--mute); }
.arch { display: grid; grid-template-columns: 200px minmax(0,1fr); gap: 40px; margin-top: 28px; }
.arch > aside { position: sticky; top: 16px; align-self: start; max-height: calc(100vh - 32px); overflow: auto; }
.months { display: flex; flex-direction: column; border-left: 1px solid var(--line); }
.months a { padding: 7px 0 7px 14px; font: 13px/1.4 var(--mono); color: var(--mute); display: flex; justify-content: space-between; margin-left: -1px; border-left: 2px solid transparent; gap: 8px; }
.months a:hover, .months a.on { color: var(--ink); border-left-color: var(--accent); }
.months small { font-size: 11px; }
.keys { font: 11.5px/1.8 var(--mono); color: var(--mute); margin: 16px 0; padding-left: 14px; }
.mgroup + .mgroup { margin-top: 28px; }
.mh { display: flex; align-items: baseline; gap: 14px; margin: 0 0 4px; padding: 18px 0 10px; border-bottom: 1px solid var(--rule); font-size: 22px; font-weight: 900; flex-wrap: wrap; }
.mh span { font: 400 12px/1 var(--mono); color: var(--mute); }
.mh .more { margin-left: auto; font-size: 13px; }

/* tools */
.tools { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); border-left: 1px solid var(--line); border-top: 1px solid var(--line); margin-top: 24px; }
.tool { background: var(--surface); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); display: flex; flex-direction: column; }
.tool figure { margin: 0; aspect-ratio: 1200 / 510; overflow: hidden; border-bottom: 1px solid var(--line); background: var(--bg); }
.tool img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .35s; }
.tool:hover img { transform: scale(1.03); }
.tb { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.tool h3 { margin: 0; font-size: 17px; font-weight: 900; display: flex; justify-content: space-between; gap: 10px; }
.tool h3 span { font: 400 11px/1.9 var(--mono); color: var(--mute); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tool p { margin: 0; font-size: 13.5px; line-height: 1.7; color: var(--mute); }
.tool .host { margin-top: auto; padding-top: 10px; font: 11.5px/1 var(--mono); color: var(--ink2); display: flex; justify-content: space-between; }
.tool:hover .host { color: var(--accent); }

/* visual archive & posters */
.vgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 0; border-left: 1px solid var(--line); border-top: 1px solid var(--line); margin-top: 24px; }
.vcard { background: var(--surface); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.vcard figure { margin: 0; aspect-ratio: 2 / 3; overflow: hidden; background: var(--bg); border-bottom: 1px solid var(--line); }
.vcard img { width: 100%; height: 100%; object-fit: cover; display: block; }
.vcard div { padding: 12px 14px; }
.vcard h3 { margin: 0; font-size: 15px; }
.vcard p { margin: 2px 0 0; font: 12px/1.5 var(--mono); color: var(--mute); }
.vcard:hover h3 { color: var(--accent); }
.poster-layout { display: grid; grid-template-columns: 180px minmax(0,1fr); gap: 32px; margin-top: 24px; }
.poster-toc { position: sticky; top: 16px; align-self: start; max-height: calc(100vh - 32px); overflow: auto; }
.poster-toc .toc { margin-bottom: 18px; }
.poster-toc .toc a { display: block; font-family: var(--mono); font-size: 12.5px; padding: 4px 0 4px 12px; }
.poster-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 24px 20px; }
.poster { margin: 0; scroll-margin-top: 16px; }
.poster-img { display: block; border: 1px solid var(--line); padding: 0; background: var(--surface); width: 100%; cursor: zoom-in; aspect-ratio: 2 / 3; overflow: hidden; }
.poster-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.poster figcaption { margin-top: 8px; font-size: 13px; line-height: 1.5; }
.poster figcaption b { display: block; font: 600 12px/1.6 var(--mono); color: var(--accent); }
.poster figcaption a:hover { color: var(--accent); text-decoration: underline; }

/* topics */
.tgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px,1fr)); border-left: 1px solid var(--line); border-top: 1px solid var(--line); margin-top: 24px; }
.tcard { background: var(--surface); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 18px; display: flex; flex-direction: column; gap: 8px; min-height: 170px; }
.tcard h3 { margin: 0; font-size: 19px; font-weight: 900; }
.tcard p { margin: 0; font-size: 13.5px; line-height: 1.7; color: var(--mute); }
.tmeta { margin-top: auto; display: flex; justify-content: space-between; font: 11.5px/1.5 var(--mono); color: var(--mute); }
.tmeta b { color: var(--accent); }
.tcard:hover { background: var(--accent); color: var(--accent-ink); --mute: rgba(255,255,255,.76); }
.tcard:hover .tmeta b { color: inherit; }
.topic-layout { display: grid; grid-template-columns: minmax(0,1fr) 320px; gap: 40px; margin-top: 28px; }
.tmonth h3 { margin: 18px 0 4px; font-size: 18px; display: flex; gap: 12px; align-items: baseline; }
.tmonth h3 span { font: 400 12px/1 var(--mono); color: var(--mute); }
.titem { display: grid; grid-template-columns: 56px minmax(0,1fr) 20px; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 15px; line-height: 1.55; }
.titem .d { font: 600 12.5px/1.8 var(--mono); color: var(--mute); }
.titem .go { color: var(--mute); }
.titem:hover b { color: var(--accent); }
.side-list .arow { grid-template-columns: minmax(0,1fr); gap: 4px; padding: 12px 0; }
.side-list .arow .go, .side-list .arow p, .side-list .arow .tags { display: none; }
.side-list .arow h3 { font-size: 14.5px; margin: 0; }

/* about, 404, generic page */
.about { display: grid; gap: 28px; margin-top: 28px; max-width: 900px; }
.about-lede { font-size: 20px; line-height: 1.7; margin: 0; }
.about-links { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); border-left: 1px solid var(--line); border-top: 1px solid var(--line); }
.about-links a { padding: 16px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--surface); font-weight: 800; font-size: 17px; display: flex; flex-direction: column; gap: 4px; }
.about-links a span { font: 12px/1.4 var(--mono); color: var(--mute); font-weight: 400; }
.about-links a:hover { background: var(--accent); color: var(--accent-ink); }
.about-links a:hover span { color: inherit; }
.qr { display: flex; gap: 20px; flex-wrap: wrap; }
.qr figure { margin: 0; background: var(--surface); border: 1px solid var(--line); padding: 12px; text-align: center; }
.qr img { width: 180px; height: 180px; display: block; }
.qr figcaption { margin-top: 8px; font-size: 13px; color: var(--mute); }
.nf { padding: 80px 0 40px; max-width: 720px; }
.nf-code { font: 800 120px/1 var(--wide); font-stretch: 125%; color: var(--accent); margin: 0; }
.nf h1 { font-size: 36px; margin: 16px 0 10px; }
.nf p { color: var(--mute); font-size: 16px; }
.nf .h-acts { margin-top: 24px; }
.page-prose { max-width: 760px; margin-top: 28px; }

/* ---------- reading ---------- */
.rd { display: grid; grid-template-columns: 220px minmax(0, var(--measure)) 260px; gap: 48px; justify-content: center; padding: 32px max(16px, env(safe-area-inset-right, 0px)) 0 max(16px, env(safe-area-inset-left, 0px)); }
.rd[data-measure="narrow"] { --measure: 640px; }
.rd[data-measure="wide"] { --measure: 840px; }
.rd-l, .rd-r { position: sticky; top: 24px; align-self: start; max-height: calc(100vh - 48px); overflow: auto; scrollbar-width: thin; }
.toc-h { font: 600 11.5px/1 var(--mono); letter-spacing: .08em; color: var(--mute); display: flex; justify-content: space-between; margin-bottom: 10px; }
.issues-h { margin-top: 26px; }
.toc { border-left: 1px solid var(--line); }
.toc a { display: grid; grid-template-columns: 24px 1fr; padding: 6px 0 6px 12px; margin-left: -1px; border-left: 2px solid transparent; font-size: 13.5px; line-height: 1.5; color: var(--mute); }
.toc a.l3 { padding-left: 24px; font-size: 13px; }
.toc a i { font: 600 11px/1.9 var(--mono); font-style: normal; }
.toc a.on { color: var(--ink); border-left-color: var(--accent); font-weight: 700; }
.toc a:hover { color: var(--ink); }
.prog { height: 2px; background: var(--line); margin: 14px 0 6px; }
.prog i { display: block; height: 100%; width: 0; background: var(--accent); }
.rd-tools { margin-top: 22px; display: flex; flex-direction: column; gap: 8px; }
.rd-tools small { font: 11px/1 var(--mono); color: var(--mute); }
.rd-tools .seg button { padding: 6px 9px; font-size: 12.5px; flex: 1; }
.issue-index { display: flex; flex-direction: column; border-left: 1px solid var(--line); }
.issue-index a { padding: 6px 0 6px 12px; margin-left: -1px; border-left: 2px solid transparent; display: flex; gap: 10px; align-items: baseline; }
.issue-index b { font: 700 13px/1.4 var(--mono); }
.issue-index span { font: 11px/1.4 var(--mono); color: var(--mute); }
.issue-index a.on { border-left-color: var(--accent); background: var(--accent-soft); }
.issue-index a:hover b { color: var(--accent); }
.crumb { font: 12.5px/1 var(--mono); color: var(--mute); display: flex; gap: 8px; flex-wrap: wrap; }
.crumb a:hover { color: var(--accent); }
.rd-a h1 { font-size: clamp(26px, 2.6vw, 34px); line-height: 1.35; font-weight: 900; margin: 14px 0; letter-spacing: -.005em; text-wrap: balance; }
.issue-kick { margin-top: 14px; font: 12.5px/1.4 var(--mono); color: var(--mute); display: flex; gap: 12px; }
.issue-kick b { color: var(--accent); }
.rd-a h1 .h1-pre { display: block; font: 600 13px/1.5 var(--mono); color: var(--mute); letter-spacing: 0; margin-bottom: 6px; }
.rd-meta { display: flex; flex-wrap: wrap; gap: 6px 18px; font: 12.5px/1.6 var(--mono); color: var(--mute); padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.abstract { margin: 20px 0 8px; padding: 14px 18px; background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--accent); font-size: 15px; line-height: 1.75; color: var(--ink2); }
.abstract b { display: block; font: 600 11px/1.6 var(--mono); letter-spacing: .08em; color: var(--accent); }
.toc-m { display: none; border: 1px solid var(--line); background: var(--surface); margin: 16px 0; }
.toc-m summary { padding: 10px 14px; font-weight: 700; font-size: 14px; cursor: pointer; }
.toc-m .toc { border-left: 0; padding: 0 14px 10px; }

.prose { font-family: var(--read-font); font-size: var(--fs); line-height: 1.9; color: var(--ink); overflow-wrap: break-word; margin-top: 18px; }
.prose > * { margin-top: 0; }
.prose p { margin: 0 0 1.05em; }
.prose h2 { font-family: var(--sans); font-size: 1.38em; line-height: 1.4; font-weight: 900; margin: 2.1em 0 .8em; padding-top: .9em; border-top: 1px solid var(--line); scroll-margin-top: 20px; }
.prose h2 > i { font: 800 .78em/1 var(--wide); font-stretch: 112%; font-style: normal; color: var(--accent); margin-right: .3em; }
.prose h3 { font-family: var(--sans); font-size: 1.12em; line-height: 1.5; font-weight: 800; margin: 1.8em 0 .6em; scroll-margin-top: 20px; }
.prose h4 { font-family: var(--sans); font-size: 1em; margin: 1.5em 0 .5em; }
.prose a { color: var(--accent); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; word-break: break-word; }
.prose ul, .prose ol { padding-left: 1.4em; margin: 0 0 1.1em; }
.prose li { margin: .3em 0; }
.prose li::marker { color: var(--accent); }
.prose blockquote { margin: 1.4em 0; padding: .4em 0 .4em 1.1em; border-left: 3px solid var(--accent); color: var(--ink2); }
.prose img { display: block; margin: 1.3em auto; border: 1px solid var(--line); background: var(--surface); cursor: zoom-in; }
.prose figure { margin: 1.3em 0 1.5em; }
.prose figure img { margin: 0 auto; }
.prose figcaption { font: 12px/1.6 var(--mono); color: var(--mute); margin-top: 8px; text-align: center; }
.prose pre { font: 13.5px/1.65 var(--mono); background: #0c0e13; color: #e6e8eb; padding: 16px 18px; overflow-x: auto; margin: 1.3em 0; }
.prose code { font-family: var(--mono); font-size: .88em; background: var(--accent-soft); padding: .1em .35em; }
.prose pre code { background: none; padding: 0; font-size: inherit; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2em 0; }
.prose .table-wrap { overflow-x: auto; margin: 1.3em 0; border: 1px solid var(--line); }
.prose table { border-collapse: collapse; width: 100%; font-family: var(--sans); font-size: .9em; line-height: 1.6; }
.prose th, .prose td { padding: 9px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose th { background: var(--surface); font-weight: 700; }
.prose .note { border: 1px solid var(--line); background: var(--surface); padding: 10px 14px; font-size: .9em; color: var(--ink2); }
.prose .xref { display: flex; align-items: center; justify-content: space-between; gap: 16px; border: 1px solid var(--line); background: var(--surface); padding: 12px 16px; margin: 0 0 1.05em; font-family: var(--sans); font-size: .92em; text-decoration: none; color: var(--ink); }
.prose .xref span { font: 11.5px/1 var(--mono); color: var(--mute); white-space: nowrap; }
.prose .xref:hover { border-color: var(--accent); color: var(--accent); }
.prose .wp-block-image, .prose .wp-block-embed { margin: 1.3em 0; }
.brief-prose h2:first-child { margin-top: .6em; }
.prose .sources { list-style: none; padding: 10px 14px; margin: .2em 0 1.4em; background: var(--surface); border: 1px solid var(--line); font: 12.5px/1.7 var(--mono); }
.prose .sources::before { content: attr(data-label); display: block; color: var(--mute); margin-bottom: 2px; }
.prose .sources li { margin: 0; }
.prose .sources a { color: var(--ink2); text-decoration: none; }
.prose .sources a:hover { color: var(--accent); }
.rd-pager { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 40px; }
.rd-pager a, .rd-pager > span { background: var(--surface); padding: 14px 16px; font-size: 14px; line-height: 1.5; font-weight: 700; }
.rd-pager a span { display: block; font: 400 11.5px/1.6 var(--mono); color: var(--mute); }
.rd-pager a.r { text-align: right; }
.rd-pager a:hover { color: var(--accent); }
.rd-end { margin-top: 24px; border-top: 2px solid var(--rule); padding-top: 14px; }
.side-meta { border-top: 2px solid var(--rule); padding-top: 12px; }
.side-meta dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; font-size: 13px; }
.side-meta dt { font: 11.5px/1.7 var(--mono); color: var(--mute); }
.side-meta dd { margin: 0; font-variant-numeric: tabular-nums; }
.side-meta dd.tags { display: flex; flex-wrap: wrap; gap: 4px; }
.rd-r h2 { margin: 22px 0 10px; font: 600 11.5px/1 var(--mono); letter-spacing: .08em; color: var(--mute); }
.rd-r .side-box { margin-top: 18px; }
.side-card { margin-top: 20px; border: 1px solid var(--line); background: var(--surface); padding: 14px; }
.side-card h2 { margin: 0 0 10px; }
.side-card .pname { font-weight: 900; font-size: 17px; margin: 0 0 6px; }
.side-card .pdesc { font-size: 13px; line-height: 1.65; color: var(--mute); margin: 0 0 12px; }
.mini-stats { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 8px; margin-bottom: 12px; }
.mini-stats div { border-top: 2px solid var(--ink); padding-top: 6px; }
.mini-stats b { display: block; font: 800 16px/1.2 var(--wide); font-stretch: 112%; font-variant-numeric: tabular-nums; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mini-stats span { font: 10.5px/1.4 var(--mono); color: var(--mute); }
.poster-card img { display: block; border: 1px solid var(--line); }
.rel { display: block; padding: 10px 0; border-top: 1px solid var(--line); font-size: 13.5px; line-height: 1.55; font-weight: 700; }
.rel span { display: block; font: 400 11px/1.6 var(--mono); color: var(--mute); }
.rel:hover { color: var(--accent); }

/* lightbox */
.lb { position: fixed; inset: 0; z-index: 60; background: rgba(5,6,10,.9); display: grid; grid-template-rows: 1fr auto; place-items: center; padding: max(20px, env(safe-area-inset-top, 0px)) max(20px, env(safe-area-inset-right, 0px)) max(20px, env(safe-area-inset-bottom, 0px)) max(20px, env(safe-area-inset-left, 0px)); cursor: zoom-out; }
.lb img { max-width: 100%; max-height: calc(100vh - 110px); border: 1px solid rgba(255,255,255,.2); background: #fff; cursor: default; }
.lb-bar { display: flex; gap: 12px; align-items: center; color: #f2f3f5; font: 12.5px/1.4 var(--mono); padding-top: 12px; max-width: 100%; }
.lb-bar button { border: 1px solid rgba(255,255,255,.4); background: none; color: inherit; padding: 6px 12px; }
.lb-bar span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 60vw; }

/* ---------- responsive ---------- */
@media (min-width: 1600px) {
  .rd { grid-template-columns: 260px minmax(0, var(--measure)) 320px; gap: 72px; }
}
@media (max-width: 1240px) {
  .rd { grid-template-columns: 200px minmax(0,1fr); gap: 36px; }
  .rd-r { grid-column: 2; position: static; max-height: none; overflow: visible; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 0 28px; align-items: start; }
}
@media (max-width: 1100px) {
  .search { width: 200px; }
  .nav-link { padding: 0 9px; }
}
@media (max-width: 1024px) {
  .h-pane { grid-template-columns: minmax(0,1fr); }
  .h-left { border-right: 0; border-bottom: 1px solid var(--hero-line); }
  .brief-grid, .topic-layout { grid-template-columns: minmax(0,1fr); }
  .tools { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .kstrip { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .foot-in { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .top-in { gap: 12px; }
  .nav-open { display: flex; order: 3; }
  .nav { display: none; position: absolute; top: 58px; left: 0; right: 0; flex-direction: column; height: auto; background: var(--surface); border-bottom: 1px solid var(--line); padding: 6px max(16px, env(safe-area-inset-right, 0px)) 12px max(16px, env(safe-area-inset-left, 0px)); box-shadow: 0 24px 40px -28px rgba(12,14,19,.45); }
  .nav.open { display: flex; }
  .nav-link { padding: 11px 0; border-bottom: 0; font-size: 15.5px; }
  .nav-link.on { color: var(--accent); }
  .nav-item { flex-direction: column; }
  .nav-item .submenu { position: static; display: flex; border: 0; box-shadow: none; padding: 0 0 6px 14px; min-width: 0; }
  .sub-link { padding: 7px 0; }
  .search { width: auto; flex: 1; }
  .search kbd { display: none; }
  .top-r { flex: 1; }
  .rd { grid-template-columns: minmax(0,1fr); }
  .rd-l { display: none; }
  .rd-r { grid-column: 1; }
  .toc-m { display: block; }
  .arch, .poster-layout { grid-template-columns: minmax(0,1fr); }
  .arch > aside, .poster-toc { position: static; max-height: none; }
  .months { flex-direction: row; overflow-x: auto; border-left: 0; border-bottom: 1px solid var(--line); }
  .months a { border-left: 0; border-bottom: 2px solid transparent; padding: 8px 12px; margin: 0 0 -1px; white-space: nowrap; }
  .months a:hover { border-bottom-color: var(--accent); }
  .keys, .arch > aside .side-box, .poster-toc .toc { display: none; }
  .ph-in { grid-template-columns: minmax(0,1fr); }
  .field { min-width: 0; }
}
@media (max-width: 640px) {
  .brand span { display: none; }
  .h-left { padding: 26px 20px 28px; }
  .topic, .rank { padding: 12px 20px 12px 16px; grid-template-columns: 52px minmax(0,1fr); }
  .rank .spark { display: none; }
  .topic em, .rank em { font-size: 22px; }
  .h-tabs button { padding: 14px 16px; }
  .h-meta { display: none; }
  .kpis { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .issue, .arow { grid-template-columns: minmax(0,1fr); gap: 8px; }
  .issue .dt { display: flex; gap: 10px; align-items: baseline; }
  .issue .dt span { margin: 0; }
  .arow .go { display: none; }
  .tools { grid-template-columns: minmax(0,1fr); }
  .kstrip { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .foot-in { grid-template-columns: minmax(0,1fr); }
  .rail { grid-auto-columns: 78%; }
  .poster-grid { grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px 12px; }
  .rd-pager { grid-template-columns: minmax(0,1fr); }
  .rd-pager a.r { text-align: left; }
  .titem { grid-template-columns: 48px minmax(0,1fr); }
  .titem .go { display: none; }
  .sec-h h2 { font-size: 26px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; scroll-behavior: auto !important; }
}
@media print {
  .top, .foot, .rd-l, .rd-r, .rd-pager, .toc-m { display: none !important; }
  .rd { display: block; }
}