/* PROTOTYPE — Pie Agent Docs + Release note (DocsShell.astro). Tokens, nav and buttons come from landing/a-base.css +
   pa-ui.css; only d-* (docs) and r-* (release note) classes live here. Reading pages: solid canvas, no WebGL stage. */

.d-root { min-height: 100vh; background: var(--pa-canvas); color: var(--pa-ink); font-family: var(--pa-font-ui); }
.d-root [hidden] { display: none !important; }
.d-root .a-links a.on { color: var(--pa-ink); background: var(--pa-tint-2); }
.d-root code { font: .92em var(--pa-font-mono); padding: 1px 5px; border-radius: var(--pa-r-xs); background: var(--pa-tint-2); color: var(--pa-ink); }
.d-root kbd { font: 11px var(--pa-font-mono); color: var(--pa-ink-3); padding: 2px 6px; border-radius: var(--pa-r-xs); border: var(--pa-bw) solid var(--pa-line); }
.d-root svg { width: 16px; height: 16px; flex: none; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.d-nav-h { margin: 0 0 6px; font: 600 var(--pa-fs-xs) var(--pa-font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--pa-ink-3); }
.d-crumb { margin: 0 0 10px; font: var(--pa-fs-xs) var(--pa-font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--pa-link); }
.d-badge { display: inline-flex; align-items: center; height: 22px; padding: 0 8px; border-radius: var(--pa-r-pill); font: 500 var(--pa-fs-xs) var(--pa-font-mono); color: var(--pa-ink-2); border: var(--pa-bw) solid var(--pa-line); background: var(--pa-tint-1); white-space: nowrap; }
.d-badge.pro { color: var(--pa-link); border-color: color-mix(in oklch, var(--pa-link) 45%, transparent); background: var(--pa-accent-tint); }

/* ── docs layout: sidebar · article · outline ── */
.d-bar { display: none; }
.d-layout { display: grid; grid-template-columns: 260px minmax(0, 1fr) 208px; gap: 48px; width: min(1280px, calc(100vw - 48px)); margin: 0 auto; padding: 96px 0 80px; }
.d-side, .d-toc { position: sticky; top: 88px; align-self: start; max-height: calc(100vh - 104px); overflow-y: auto; scrollbar-width: thin; }
.d-find { all: unset; box-sizing: border-box; cursor: pointer; display: flex; align-items: center; gap: 8px; width: 100%; height: 36px; padding: 0 10px; margin-bottom: 22px; border-radius: var(--pa-r-m); border: var(--pa-bw) solid var(--pa-line); background: var(--pa-tint-1); color: var(--pa-ink-3); font-size: var(--pa-fs); transition: border-color var(--pa-dur-1); }
.d-find:hover { border-color: var(--pa-line-strong); color: var(--pa-ink-2); }
.d-find span { flex: 1; }
.d-nav { display: grid; gap: 22px; }
.d-side { padding-right: 8px; scrollbar-width: none; }
.d-side::-webkit-scrollbar { display: none; }
.d-side .d-nav-h { padding-left: 0; }
.d-nav-g { display: grid; gap: 1px; }
/* active item = 012 trace rail: every link is a node on one vertical line per group, the open page is the node that
   "runs" (teal dot + sonar, the rail flows into it), the same marks the chat uses for the step Pie is on */
.d-nav a, .d-toc a, .r-idx a { position: relative; text-decoration: none; transition: color var(--pa-dur-1); }
.d-nav a::before, .d-toc a::before, .r-idx a::before { content: ""; position: absolute; left: var(--rail-x); top: 0; bottom: 0; width: 1px; background: var(--pa-line); }
.d-nav a:first-of-type::before, .d-toc a:first-of-type::before, .r-idx a:first-of-type::before { top: 50%; }
.d-nav a:last-of-type::before, .d-toc-list a:last-of-type::before, .r-idx a:last-of-type::before { bottom: 50%; }
.d-nav a::after, .d-toc a::after, .r-idx a::after { content: ""; position: absolute; left: calc(var(--rail-x) - 3px); top: calc(50% - 3.5px); width: 7px; height: 7px; border-radius: 50%;
  background: var(--pa-canvas); box-shadow: inset 0 0 0 1.5px var(--pa-ink-3), 0 0 0 3px var(--pa-canvas); transition: background var(--pa-dur-2), box-shadow var(--pa-dur-2), transform var(--pa-dur-2) var(--pa-ease); }
.d-nav a:hover::after, .d-toc a:hover::after, .r-idx a:hover::after { box-shadow: inset 0 0 0 1.5px var(--pa-ink), 0 0 0 3px var(--pa-canvas); transform: scale(1.15); }
.d-nav a.on::after, .r-idx a.on::after { background: var(--pa-st-running); box-shadow: none; animation: pa-sonar 1.2s var(--pa-ease) infinite; }
.d-toc a.on::after { background: var(--pa-link); box-shadow: 0 0 0 3px var(--pa-canvas), 0 0 10px var(--pa-run-glow); }
.d-nav a.on::before, .r-idx a.on::before { background: linear-gradient(180deg, transparent, var(--pa-st-running), transparent); background-size: 100% 200%; animation: pa-flow 1s linear infinite; }
.d-nav a { --rail-x: 6px; display: flex; align-items: center; gap: 8px; padding: 7px 12px 7px 24px; color: var(--pa-ink-3); font-size: var(--pa-fs); line-height: 1.35; }
.d-nav a:hover { color: var(--pa-ink); }
.d-nav a.on { color: var(--pa-ink); font-weight: 600; }
.d-nav a em { margin-left: auto; font: normal 10px var(--pa-font-mono); letter-spacing: .04em; color: var(--pa-link); }

.d-main { min-width: 0; max-width: 740px; }
.d-main h1 { margin: 0; font-size: clamp(32px, 3.6vw, 44px); line-height: 1.08; letter-spacing: -.035em; font-weight: 750; text-wrap: balance; }
.d-desc { margin: 12px 0 0; font-size: 17px; line-height: 1.5; color: var(--pa-ink-3); }
.d-badges { display: flex; gap: 6px; margin-top: 16px; flex-wrap: wrap; }
.d-body { margin-top: 32px; padding-top: 28px; border-top: var(--pa-bw) solid var(--pa-line); font-size: 15.5px; line-height: 1.7; color: var(--pa-ink-2); }
.d-body > * { margin: 0 0 20px; }
.d-body p { margin-top: 0; }
.d-lead { font-size: 18px; line-height: 1.6; color: var(--pa-ink); }
.d-body h2 { margin: 40px 0 14px; font-size: 22px; line-height: 1.25; letter-spacing: -.02em; font-weight: 650; color: var(--pa-ink); }
.d-body h2 a { color: inherit; text-decoration: none; }
.d-body h2 a::after { content: "#"; margin-left: 8px; color: var(--pa-ink-3); opacity: 0; transition: opacity var(--pa-dur-1); }
.d-body h2:hover a::after { opacity: 1; }

.d-list { padding-left: 20px; display: grid; gap: 6px; }
.d-list li::marker { color: var(--pa-link); }
.d-steps { list-style: none; padding: 0; counter-reset: st; display: grid; gap: 0; }
.d-steps li { counter-increment: st; position: relative; padding: 2px 0 18px 44px; display: grid; gap: 2px; }
.d-steps li::before { content: counter(st); position: absolute; left: 0; top: 0; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; font: 600 12px var(--pa-font-mono); color: var(--pa-link); background: var(--pa-accent-tint); border: var(--pa-bw) solid color-mix(in oklch, var(--pa-link) 35%, transparent); }
.d-steps li::after { content: ""; position: absolute; left: 13.5px; top: 32px; bottom: 2px; width: 1px; background: var(--pa-line); }
.d-steps li:last-child { padding-bottom: 0; }
.d-steps li:last-child::after { display: none; }
.d-steps b { color: var(--pa-ink); font-weight: 600; }
.d-defs { display: grid; gap: 0; border: var(--pa-bw) solid var(--pa-line); border-radius: var(--pa-r-m); overflow: hidden; }
.d-defs div { display: grid; grid-template-columns: minmax(120px, 34%) 1fr; gap: 16px; padding: 11px 16px; }
.d-defs div + div { border-top: var(--pa-bw) solid var(--pa-line); }
.d-defs dt { color: var(--pa-ink); font-weight: 600; }
.d-defs dd { margin: 0; }

.d-try { padding: 14px 16px 16px; border-radius: var(--pa-r-m); background: var(--pa-tint-1); border: var(--pa-bw) solid var(--pa-line); }
.d-try-h { margin: 0 0 10px !important; font: var(--pa-fs-xs) var(--pa-font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--pa-ink-3); }
.d-try-row { display: flex; flex-wrap: wrap; gap: 8px; }
.d-chip { all: unset; cursor: pointer; box-sizing: border-box; max-width: 100%; display: inline-flex; align-items: center; min-height: 32px; padding: 5px 12px; border-radius: var(--pa-r-pill); background: var(--pa-canvas); border: var(--pa-bw) solid var(--pa-line-strong); color: var(--pa-ink); font-size: var(--pa-fs); line-height: 1.4; transition: border-color var(--pa-dur-1), background var(--pa-dur-1); }
.d-chip:hover { border-color: color-mix(in oklch, var(--pa-link) 60%, transparent); }
.d-chip.copied { background: var(--pa-accent-tint); border-color: var(--pa-link); }
.d-chip.copied::after { content: "Đã copy"; margin-left: 8px; font: var(--pa-fs-xs) var(--pa-font-mono); color: var(--pa-link); }

.d-call { display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: baseline; padding: 12px 16px; border-radius: var(--pa-r-m); border: var(--pa-bw) solid; }
.d-call b { font: 600 var(--pa-fs-xs) var(--pa-font-mono); letter-spacing: .06em; text-transform: uppercase; }
.d-call p { margin: 0; color: var(--pa-ink); }
.d-call.tip { border-color: color-mix(in oklch, var(--pa-link) 35%, transparent); background: var(--pa-accent-tint); }
.d-call.tip b { color: var(--pa-link); }
.d-call.note { border-color: color-mix(in oklch, var(--pa-st-attention) 40%, transparent); background: color-mix(in oklch, var(--pa-st-attention) 9%, transparent); }
.d-call.note b { color: var(--pa-st-attention); }

.d-code { position: relative; }
.d-code pre { margin: 0; padding: 16px 18px; overflow-x: auto; border-radius: var(--pa-r-m); background: #12171a; border: var(--pa-bw) solid var(--pa-line); }
.d-code pre code { padding: 0; background: none; font-size: 13px; line-height: 1.7; color: var(--pa-ink); }
.d-code-copy { all: unset; cursor: pointer; position: absolute; top: 8px; right: 8px; padding: 3px 8px; border-radius: var(--pa-r-xs); font: var(--pa-fs-xs) var(--pa-font-mono); color: var(--pa-ink-3); background: var(--pa-tint-2); }
.d-code-copy:hover { color: var(--pa-ink); }
.d-formula { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.d-formula span { padding: 8px 14px; border-radius: var(--pa-r-m); background: var(--pa-surface); border: var(--pa-bw) solid var(--pa-line); color: var(--pa-ink); font-weight: 600; }
.d-formula i { font-style: normal; color: var(--pa-link); font-weight: 700; }
.d-table { overflow-x: auto; border: var(--pa-bw) solid var(--pa-line); border-radius: var(--pa-r-m); }
.d-table table { width: 100%; border-collapse: collapse; font-size: var(--pa-fs-md); }
.d-table th { text-align: left; padding: 10px 14px; font: 600 var(--pa-fs-xs) var(--pa-font-mono); letter-spacing: .04em; color: var(--pa-ink-3); background: var(--pa-tint-1); }
.d-table td { padding: 11px 14px; border-top: var(--pa-bw) solid var(--pa-line); vertical-align: top; }
.d-table td:first-child { color: var(--pa-ink); font-weight: 500; min-width: 160px; }

.d-shots { display: grid; gap: 16px; }
.d-shots.multi { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.d-shot { margin: 0; display: grid; gap: 8px; align-content: start; }
.d-shot-img { all: unset; cursor: zoom-in; display: block; border-radius: var(--pa-r-m); overflow: hidden; border: var(--pa-bw) solid var(--pa-line); background: #f4f4f0; transition: border-color var(--pa-dur-2), transform var(--pa-dur-2) var(--pa-ease); }
.d-shot-img:hover { border-color: color-mix(in oklch, var(--pa-link) 55%, transparent); transform: translateY(-2px); }
.d-shot-img img { width: 100%; max-height: 420px; object-fit: cover; object-position: top; }
.d-shots:not(.multi) .d-shot-img img { max-height: 560px; object-fit: contain; }
.d-shot figcaption { font-size: var(--pa-fs-sm); line-height: 1.5; color: var(--pa-ink-3); }
.d-zoom { padding: 0; border: 0; background: transparent; max-width: min(1100px, 94vw); max-height: 92vh; }
.d-zoom::backdrop { background: color-mix(in srgb, #0b1011 85%, transparent); backdrop-filter: blur(3px); }
.d-zoom img { max-height: 90vh; width: auto; margin: 0 auto; border-radius: var(--pa-r-m); cursor: zoom-out; }

.d-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 10px; }
.d-card { position: relative; display: grid; gap: 4px; padding: 14px 16px; border-radius: var(--pa-r-m); background: var(--pa-surface); border: var(--pa-bw) solid var(--pa-line); text-decoration: none; transition: border-color var(--pa-dur-2), transform var(--pa-dur-2) var(--pa-ease); }
.d-card:hover { border-color: color-mix(in oklch, var(--pa-link) 50%, transparent); transform: translateY(-2px); }
.d-card b { color: var(--pa-ink); font-weight: 600; }
.d-card span { font-size: var(--pa-fs); line-height: 1.45; color: var(--pa-ink-3); padding-right: 16px; }
.d-card i { position: absolute; right: 14px; top: 14px; font-style: normal; color: var(--pa-link); transition: transform var(--pa-dur-2) var(--pa-ease); }
.d-card:hover i { transform: translateX(3px); }
.d-buy { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding: 18px 20px; border-radius: var(--pa-r-l); background: var(--pa-surface); border: var(--pa-bw) solid color-mix(in oklch, var(--pa-link) 35%, transparent); }
.d-buy-num { font-size: 28px; font-weight: 700; letter-spacing: -.03em; color: var(--pa-ink); margin-right: 10px; }
.d-buy-per { font-size: var(--pa-fs); color: var(--pa-ink-3); }

.d-pn { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 56px; padding-top: 24px; border-top: var(--pa-bw) solid var(--pa-line); }
.d-pn-a { display: grid; gap: 4px; padding: 14px 16px; border-radius: var(--pa-r-m); border: var(--pa-bw) solid var(--pa-line); text-decoration: none; transition: border-color var(--pa-dur-2); }
.d-pn-a:hover { border-color: color-mix(in oklch, var(--pa-link) 50%, transparent); }
.d-pn-a small { font: var(--pa-fs-xs) var(--pa-font-mono); color: var(--pa-ink-3); }
.d-pn-a b { color: var(--pa-ink); font-weight: 600; }
.d-pn-a.nx { text-align: right; }

.d-toc { display: grid; gap: 2px; align-content: start; }
.d-toc-list { display: grid; }
.d-toc a { --rail-x: 4px; padding: 5px 0 5px 18px; color: var(--pa-ink-3); font-size: var(--pa-fs-sm); line-height: 1.4; }
.d-toc a:hover { color: var(--pa-ink); }
.d-toc a.on { color: var(--pa-ink); }
.d-toc .d-toc-up { margin-top: 14px; padding-left: 0; }
.d-toc .d-toc-up::before, .d-toc .d-toc-up::after { display: none; }

/* ── search (⌘K) ── */
.d-search { padding: 0; border: 0; background: transparent; width: min(640px, calc(100vw - 32px)); max-height: none; margin: 12vh auto auto; color: var(--pa-ink); overflow: visible; }
.d-search::backdrop { background: color-mix(in srgb, #0b1011 70%, transparent); backdrop-filter: blur(3px); }
.d-search-box { border-radius: var(--pa-r-l); overflow: hidden; }
.d-search-in { display: flex; align-items: center; gap: 10px; padding: 0 16px; height: 54px; border-bottom: var(--pa-bw) solid var(--pa-line); color: var(--pa-ink-3); }
.d-search-in input { flex: 1; min-width: 0; height: 100%; background: none; border: 0; outline: 0; color: var(--pa-ink); font: 16px var(--pa-font-ui); }
.d-search-res { list-style: none; margin: 0; padding: 6px; max-height: min(60vh, 480px); overflow-y: auto; }
.d-search-res a { display: grid; grid-template-columns: auto 1fr; gap: 2px 10px; padding: 10px 12px; border-radius: var(--pa-r-s); text-decoration: none; }
.d-search-res a.on { background: var(--pa-accent-tint); }
.d-search-res small { grid-row: span 2; align-self: start; margin-top: 2px; font: 10px var(--pa-font-mono); letter-spacing: .04em; color: var(--pa-link); padding: 2px 6px; border-radius: var(--pa-r-xs); background: var(--pa-tint-2); white-space: nowrap; }
.d-search-res b { color: var(--pa-ink); font-weight: 600; font-size: var(--pa-fs-md); }
.d-search-res span { color: var(--pa-ink-3); font-size: var(--pa-fs-sm); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.d-search-empty { margin: 0; padding: 22px; text-align: center; color: var(--pa-ink-3); }

/* ── footer ── */
.d-foot { border-top: var(--pa-bw) solid var(--pa-line); }
.d-foot-in { width: min(1280px, calc(100vw - 48px)); margin: 0 auto; padding: 28px 0 40px; display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.d-foot-brand { display: flex; align-items: center; gap: 8px; font-weight: 600; }
.d-foot-brand img { width: 24px; height: 24px; border-radius: 50%; background: radial-gradient(circle at 50% 32%, #ffffff 0%, #f4f6f9 60%, #e3e8ef 100%); }
.d-foot nav { display: flex; gap: 18px; flex-wrap: wrap; }
.d-foot nav a { color: var(--pa-ink-2); text-decoration: none; font-size: var(--pa-fs); }
.d-foot nav a:hover { color: var(--pa-ink); }
.d-foot-fine { margin-left: auto; font: var(--pa-fs-xs) var(--pa-font-mono); color: var(--pa-ink-3); }

/* ── release note ── */
.r-hero { width: min(1180px, calc(100vw - 48px)); margin: 0 auto; padding: 120px 0 28px; }
.r-hero-in { display: flex; align-items: center; gap: 24px; }
.r-hero-bot { width: 96px; height: 96px; border-radius: 50%; flex: none; background: radial-gradient(circle at 50% 32%, #ffffff 0%, #f4f6f9 60%, #e3e8ef 100%); box-shadow: 0 0 0 1px var(--pa-line-strong), 0 18px 40px -16px rgba(0,0,0,.6); animation: r-bob 4s ease-in-out infinite; }
@keyframes r-bob { 50% { transform: translateY(-5px) rotate(-2deg); } }
.r-hero h1 { margin: 0; font-size: clamp(36px, 5vw, 60px); line-height: 1; letter-spacing: -.045em; font-weight: 800; }
.r-stats { margin: 14px 0 0; font: var(--pa-fs-sm) var(--pa-font-mono); color: var(--pa-ink-3); }
.r-stats b { color: var(--pa-ink); }
.r-bar { position: sticky; top: 62px; z-index: 12; padding: 14px 0; background: linear-gradient(var(--pa-canvas) 84%, transparent); }
.r-bar-in { width: min(1180px, calc(100vw - 48px)); margin: 0 auto; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.r-chips { display: inline-flex; gap: 2px; padding: 3px; border-radius: var(--pa-r-m); background: var(--pa-tint-1); border: var(--pa-bw) solid var(--pa-line); flex-wrap: wrap; }
.r-chips button { display: inline-flex; align-items: center; gap: 6px; font: 500 var(--pa-fs) var(--pa-font-ui); color: var(--pa-ink-2); background: none; border: 0; padding: 7px 12px; border-radius: var(--pa-r-s); cursor: pointer; transition: background var(--pa-dur-1), color var(--pa-dur-1); }
.r-chips button:hover { color: var(--pa-ink); background: var(--pa-tint-2); }
.r-chips button i { font: normal var(--pa-fs-xs) var(--pa-font-mono); color: var(--pa-ink-3); }
.r-chips button.on { background: var(--pa-accent); color: var(--pa-on-accent); }
.r-chips button.on i { color: var(--pa-on-accent); }
.r-q { margin-left: auto; display: flex; align-items: center; gap: 8px; height: 38px; padding: 0 12px; width: min(320px, 100%); border-radius: var(--pa-r-m); border: var(--pa-bw) solid var(--pa-line); background: var(--pa-tint-1); color: var(--pa-ink-3); }
.r-q:focus-within { border-color: color-mix(in oklch, var(--pa-link) 55%, transparent); box-shadow: var(--pa-focus); }
.r-q input { flex: 1; min-width: 0; background: none; border: 0; outline: 0; color: var(--pa-ink); font: var(--pa-fs-md) var(--pa-font-ui); }
.r-layout { width: min(1180px, calc(100vw - 48px)); margin: 0 auto; padding: 12px 0 80px; display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 40px; }
.r-idx { position: sticky; top: 148px; align-self: start; max-height: calc(100vh - 164px); overflow-y: auto; scrollbar-width: thin; display: grid; gap: 18px; }
.r-idx-g { display: grid; gap: 1px; }
.r-idx { padding-right: 6px; scrollbar-width: none; }
.r-idx::-webkit-scrollbar { display: none; }
.r-idx .d-nav-h { padding-left: 0; }
.r-idx a { --rail-x: 5px; display: flex; align-items: baseline; justify-content: space-between; gap: 8px; padding: 4px 4px 4px 20px; font: var(--pa-fs-sm) var(--pa-font-mono); color: var(--pa-ink-3); }
.r-idx a small { font-size: 10.5px; color: var(--pa-ink-3); }
.r-idx a:hover { color: var(--pa-ink); }
.r-idx a.on { color: var(--pa-ink); font-weight: 600; }
.r-idx a.off { opacity: .35; }
.r-list { list-style: none; margin: 0; padding: 0; display: grid; }
.r-rel { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 28px; position: relative; padding-bottom: 28px; scroll-margin-top: 150px; }
.r-rel::before { content: ""; position: absolute; left: 132px; top: 6px; bottom: 0; width: 1px; background: var(--pa-line); }
.r-rel::after { content: ""; position: absolute; left: 128px; top: 6px; width: 9px; height: 9px; border-radius: 50%; background: var(--pa-ink-3); box-shadow: 0 0 0 4px var(--pa-canvas); }
.r-rel.major::after { background: var(--pa-link); box-shadow: 0 0 0 4px var(--pa-canvas), 0 0 0 6px color-mix(in oklch, var(--pa-link) 35%, transparent); }
.r-rel:first-child::after { background: var(--pa-st-done); }
.r-meta { display: grid; gap: 4px; justify-items: start; align-content: start; text-align: left; }
.r-tag { font: 600 var(--pa-fs) var(--pa-font-mono); color: var(--pa-ink); text-decoration: none; padding: 2px 8px; border-radius: var(--pa-r-pill); border: var(--pa-bw) solid var(--pa-line-strong); }
.r-tag:hover { border-color: var(--pa-link); color: var(--pa-link); }
.r-meta time { font: var(--pa-fs-xs) var(--pa-font-mono); color: var(--pa-ink-3); padding-left: 8px; }
.r-card { padding: 18px 20px; border-radius: var(--pa-r-l); background: var(--pa-surface); border: var(--pa-bw) solid var(--pa-line); transition: border-color var(--pa-dur-2); }
.r-rel:target .r-card, .r-card:hover { border-color: color-mix(in oklch, var(--pa-link) 40%, transparent); }
.r-card header { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.r-card h2 { margin: 0 6px 0 0; font-size: 19px; letter-spacing: -.02em; font-weight: 650; color: var(--pa-ink); }
.r-rel.major .r-card h2 { font-size: 22px; }
.d-badge.k-major { color: var(--pa-st-queue); border-color: color-mix(in oklch, var(--pa-st-queue) 40%, transparent); }
.d-badge.k-patch { color: var(--pa-ink-3); }
.r-link { all: unset; cursor: pointer; margin-left: auto; width: 26px; height: 26px; display: grid; place-items: center; border-radius: var(--pa-r-xs); color: var(--pa-ink-3); font: 600 14px var(--pa-font-mono); }
.r-link:hover { background: var(--pa-tint-2); color: var(--pa-ink); }
.r-link.copied::after { content: "Đã copy link"; position: absolute; transform: translate(-100%, 0); margin-left: -8px; font: var(--pa-fs-xs) var(--pa-font-mono); color: var(--pa-link); white-space: nowrap; }
.r-card ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.r-card li { display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 10px; align-items: baseline; font-size: 15px; line-height: 1.6; color: var(--pa-ink-2); }
.r-card li code { overflow-wrap: anywhere; }
.r-k { justify-self: start; font: 600 10px var(--pa-font-mono); letter-spacing: .05em; text-transform: uppercase; padding: 2px 6px; border-radius: var(--pa-r-xs); }
.r-card li.new .r-k { color: var(--pa-link); background: var(--pa-accent-tint); }
.r-card li.fix .r-k { color: var(--pa-st-attention); background: color-mix(in oklch, var(--pa-st-attention) 12%, transparent); }
.r-empty { text-align: center; color: var(--pa-ink-3); margin: 0 0 80px; }

/* ── responsive ── */
@media (max-width: 1180px) {
  .d-layout { grid-template-columns: 232px minmax(0, 1fr); gap: 40px; }
  .d-toc { display: none; }
}
@media (max-width: 860px) {
  .d-bar { display: flex; align-items: center; gap: 12px; position: sticky; top: 0; z-index: 12; padding: 72px 16px 10px; background: linear-gradient(var(--pa-canvas) 86%, transparent); }
  .d-menu-btn { all: unset; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; height: 36px; padding: 0 12px; border-radius: var(--pa-r-s); border: var(--pa-bw) solid var(--pa-line); background: var(--pa-tint-1); font-size: var(--pa-fs); color: var(--pa-ink); flex: none; }
  .d-bar-crumb { min-width: 0; font-size: var(--pa-fs-sm); color: var(--pa-ink-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .d-bar-crumb i { font-style: normal; margin: 0 4px; }
  .d-bar-crumb b { color: var(--pa-ink); font-weight: 500; }
  .d-layout { display: block; width: auto; padding: 12px 16px 56px; }
  .d-side { position: fixed; inset: 0 auto 0 0; z-index: 40; width: min(320px, 86vw); max-height: none; padding: 20px 16px 32px 26px; background: var(--pa-canvas); border-right: var(--pa-bw) solid var(--pa-line); box-shadow: 0 0 60px rgba(0, 0, 0, .6); transform: translateX(-104%); transition: transform var(--pa-dur-3) var(--pa-ease); visibility: hidden; }
  .d-side.open { transform: none; visibility: visible; }
  .d-scrim { position: fixed; inset: 0; z-index: 39; background: color-mix(in srgb, #0b1011 60%, transparent); }
  .d-nav a { padding: 9px 10px 9px 24px; }
  .d-body { font-size: 15.5px; }
  .d-shots.multi { grid-template-columns: minmax(0, 1fr); }
  .d-defs div { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .d-pn { grid-template-columns: minmax(0, 1fr); }
  .d-foot-in { width: auto; padding: 24px 16px 36px; }
  .d-foot-fine { margin-left: 0; }

  .r-hero { width: auto; padding: 96px 16px 20px; }
  .r-hero-in { gap: 16px; }
  .r-hero-bot { width: 68px; height: 68px; }
  .r-bar { top: 62px; padding: 12px 0; }
  .r-bar-in { width: auto; padding: 0 16px; }
  .r-q { margin-left: 0; width: 100%; }
  .r-layout { display: block; width: auto; padding: 8px 16px 64px; }
  .r-idx { display: none; }
  .r-rel { grid-template-columns: minmax(0, 1fr); gap: 10px; padding: 0 0 22px 22px; }
  .r-rel::before { left: 4px; }
  .r-rel::after { left: 0; }
  .r-meta { display: flex; align-items: baseline; gap: 8px; }
  .r-card { padding: 16px; }
  .r-card li { grid-template-columns: minmax(0, 1fr); gap: 2px; }
}
@media (prefers-reduced-motion: reduce) { .d-nav a.on::after, .d-nav a.on::before, .r-idx a.on::after, .r-idx a.on::before { animation: none; } .r-hero-bot { animation: none; } .d-card, .d-shot-img { transition: none; } }