/* Layout: "sơn mài" workbench — top bar, meridian rail (left), full-height 3D stage (centre), point dossier (right). Stacks on phones. */
:root{
  /* Đồng bộ bảng màu website Triều Đông Y: giấy kem, mực nâu, vàng đồng, đỏ son */
  color-scheme:light;
  --bg:#F6EFE1; --surface:#FFF8EA; --surface2:#F9F0DC; --ink:#2F241C; --text:#4A3426; --muted:#7A6656; --line:#E6D6B8; --line2:#D9BF8C;
  --stage:#2A2019; --stage-hi:#5A4535; --skin:#D9BA9C; --organ:#B97A6E;
  --gold:#B88A44; --gold-dark:#8A6235; --gold-soft:#D7BA7A; --gold-ink:#FFFFFF; --red:#8B2E24; --red-soft:#A94B3D; --brown:#4A3426; --herb:#5E6B45;
  --cinnabar:#C2412A; --indigo:#93A6EE; --amber:#E2B262; --jade:#5E6B45; --warn:#A94B3D; --point:#E0B562; --glow:#FFD27A;
  --font-display:Tahoma,Geneva,Verdana,sans-serif;
  --font-body:Tahoma,Geneva,Verdana,sans-serif;
  --font-eyebrow:Tahoma,Geneva,Verdana,sans-serif;
  --font-mono:Tahoma,Geneva,Verdana,sans-serif;
  --r:10px;
  --shadow:0 6px 24px rgba(62,42,30,.10); --shadow-lg:0 12px 40px rgba(62,42,30,.16);
}
[hidden]{display:none!important}
html,body{height:100%}
*{box-sizing:border-box}
body{background:var(--bg);color:var(--ink);font-family:var(--font-body);font-size:14px;line-height:1.5;
  padding-left:max(14px,env(safe-area-inset-left,0px));padding-right:max(14px,env(safe-area-inset-right,0px));padding-block:12px;
  background-image:radial-gradient(1200px 600px at 50% -10%,#2A1D15 0%,transparent 60%)}
button,input,textarea,select{font:inherit;color:inherit}
::selection{background:color-mix(in srgb,var(--gold) 40%,transparent)}

.shell{height:100%;display:grid;grid-template-columns:236px minmax(0,1fr) 372px;grid-template-rows:auto minmax(0,1fr);gap:12px}

/* ---------- Top bar ---------- */
.topbar{grid-column:1/-1;display:flex;align-items:center;gap:14px;flex-wrap:nowrap;min-width:0}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand svg{flex:none}
.brand-name{font:600 22px/1 var(--font-display);letter-spacing:.02em;color:var(--ink)}
.brand-name em{font-style:normal;color:var(--gold)}
.cur{flex:1;display:flex;flex-direction:column;min-width:0;padding-left:14px;border-left:1px solid var(--line2)}
.cur h1{margin:0;font:600 19px/1.15 var(--font-display);letter-spacing:.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cur .sub{font-size:11.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.han{font-family:"Noto Serif SC","Songti SC","SimSun",serif}
.tools{margin-left:auto;display:flex;align-items:center;gap:6px;flex-wrap:nowrap;flex:none}
.tbtn{display:inline-flex;align-items:center;gap:7px;height:34px;padding:0 12px;border-radius:9px;border:1px solid var(--line2);background:var(--surface);cursor:pointer;font-size:13px;color:var(--ink);white-space:nowrap}
.tbtn svg{width:16px;height:16px;flex:none;stroke:currentColor;fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.tbtn:hover{border-color:var(--gold)}
.tbtn[aria-pressed="true"],.tbtn.on{background:var(--gold);border-color:var(--gold);color:var(--gold-ink)}
select.tbtn{appearance:none;padding-right:28px;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 15px) 15px,calc(100% - 10px) 15px;background-size:5px 5px;background-repeat:no-repeat}
select.tbtn.on{background-color:var(--gold);color:var(--gold-ink)}
details.menu{position:relative}
details.menu>summary{list-style:none}
details.menu>summary::-webkit-details-marker{display:none}
.menu-pop{position:absolute;right:0;top:40px;z-index:20;background:var(--surface2);border:1px solid var(--line2);border-radius:12px;padding:8px;box-shadow:0 18px 40px rgba(0,0,0,.45);min-width:200px;display:grid;gap:2px}
.menu-pop.grid{grid-template-columns:repeat(2,minmax(0,1fr));min-width:300px}
.menu-pop button{background:none;border:0;text-align:left;padding:7px 10px;border-radius:7px;cursor:pointer;font-size:13px;color:var(--ink)}
.menu-pop button:hover{background:color-mix(in srgb,var(--gold) 16%,transparent)}
.menu-pop .mh{grid-column:1/-1;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);padding:6px 10px 2px}

/* ---------- Rail ---------- */
.rail{min-height:0;grid-row:3;display:flex;flex-direction:column;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:12px;overflow:hidden}
.search{position:relative}
.search input{width:100%;height:36px;border-radius:9px;border:1px solid var(--line2);background:var(--bg);padding:0 10px 0 32px;color:var(--ink)}
.search input:focus{outline:none;border-color:var(--gold)}
.search svg{position:absolute;left:10px;top:10px;width:16px;height:16px;stroke:var(--muted);fill:none;stroke-width:1.8}
.results{position:absolute;left:0;right:0;top:40px;z-index:15;background:var(--surface2);border:1px solid var(--line2);border-radius:10px;max-height:340px;overflow:auto;box-shadow:0 18px 40px rgba(0,0,0,.45);padding:4px}
.results button{display:grid;grid-template-columns:auto minmax(0,1fr);gap:2px 8px;width:100%;text-align:left;background:none;border:0;padding:6px 8px;border-radius:7px;cursor:pointer;color:var(--ink)}
.results button:hover,.results button.act{background:color-mix(in srgb,var(--gold) 16%,transparent)}
.results .rc{font:500 11.5px var(--font-mono);color:var(--gold)}
.results .rm{grid-column:2;font-size:11px;color:var(--muted)}
.results .none{padding:8px;color:var(--muted);font-size:12.5px}
.mer-switch{overflow:auto;min-height:0;display:flex;flex-direction:column;gap:1px;margin:0 -4px;padding:0 4px}
.mer-sep{font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);padding:12px 8px 5px}
.mer-sep:first-child{padding-top:2px}
.mer{display:flex;align-items:center;gap:9px;width:100%;border:0;background:none;padding:6px 8px;border-radius:8px;cursor:pointer;color:var(--ink);text-align:left;font-size:13.5px}
.mer:hover{background:color-mix(in srgb,var(--ink) 6%,transparent)}
.mer[aria-selected="true"]{background:color-mix(in srgb,var(--gold) 15%,transparent);box-shadow:inset 2px 0 0 var(--gold)}
.mer .md{width:9px;height:9px;border-radius:50%;flex:none;box-shadow:0 0 0 2px color-mix(in srgb,var(--bg) 70%,transparent)}
.mer .mn{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mer .mc{font:500 10.5px var(--font-mono);color:var(--muted)}
.mer:focus-visible,.tbtn:focus-visible,.btn:focus-visible,.tab:focus-visible,.prow:focus-visible{outline:2px solid var(--gold);outline-offset:2px}

/* ---------- Stage ---------- */
.stage{grid-row:3;position:relative;min-width:0;min-height:0;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);
  background:radial-gradient(ellipse 70% 62% at 50% 40%,var(--stage-hi),var(--stage))}
#viewport{position:absolute;inset:0;touch-action:none}
#viewport canvas{display:block;width:100%;height:100%}
#labels{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.lbl.flip{transform:translate(calc(-100% - 9px),-50%)!important}
.lbl{overflow:hidden;text-overflow:ellipsis}
.lbl{position:absolute;transform:translate(9px,-50%);font:500 10.5px/1.2 var(--font-mono);color:var(--ink);white-space:nowrap;
  background:color-mix(in srgb,var(--bg) 72%,transparent);padding:2px 6px;border-radius:5px;border:1px solid color-mix(in srgb,var(--ink) 10%,transparent)}
.lbl.sel{font:600 12px/1.2 var(--font-body);border-color:var(--gold);color:var(--gold);background:color-mix(in srgb,var(--bg) 88%,transparent)}
.lbl.deep{font:italic 400 11px/1.2 var(--font-body);color:var(--indigo);background:transparent;border:0}
.lbl.link{color:var(--amber)}
.lbl.hit{border-color:var(--glow);color:var(--glow)}
.tools-wrap{margin-left:auto;display:flex;flex-direction:column;align-items:flex-end;gap:6px;flex:none;min-width:0}
.tools-wrap .tools{margin-left:0}
.dock{display:flex;align-items:center;gap:6px;flex-wrap:nowrap;justify-content:flex-end}
.dock:not(:has(> :not([hidden]))){display:none}
.dock select.tbtn{max-width:240px;overflow:hidden;text-overflow:ellipsis}
.play svg{fill:currentColor;stroke:none}
.ticker{position:absolute;left:14px;bottom:14px;max-width:calc(100% - 290px)!important;background:color-mix(in srgb,var(--bg) 85%,transparent);color:var(--gold);border:1px solid color-mix(in srgb,var(--gold) 45%,transparent);
  font:600 14px var(--font-body);padding:6px 16px;border-radius:999px;white-space:nowrap;max-width:calc(100% - 24px);overflow:hidden;text-overflow:ellipsis}
.ticker.deep{color:var(--indigo);border-color:color-mix(in srgb,var(--indigo) 45%,transparent)}
.legend{position:absolute;left:12px;top:12px;display:flex;flex-direction:column;gap:4px;font-size:11.5px;color:var(--muted);
  background:color-mix(in srgb,var(--bg) 70%,transparent);padding:8px 11px;border-radius:10px;border:1px solid var(--line)}
.legend i{display:inline-block;width:20px;height:0;vertical-align:middle;margin-right:7px;border-top:3px solid}
.legend .k-main{border-color:var(--cinnabar)} .legend .k-deep{border-top-style:dotted;border-color:var(--indigo)} .legend .k-br{border-color:var(--amber)}
.legend .k-glow{width:9px;height:9px;border:0;border-radius:50%;background:var(--glow);box-shadow:0 0 8px var(--glow);margin-left:5px;margin-right:13px}
.all-legend{position:absolute;right:12px;top:12px;display:grid;grid-template-columns:repeat(2,auto);gap:1px 10px;background:color-mix(in srgb,var(--bg) 80%,transparent);
  padding:9px 10px;border-radius:10px;border:1px solid var(--line);font-size:12px;max-height:calc(100% - 90px);overflow:auto}
.all-legend button{display:flex;align-items:center;gap:7px;background:none;border:0;padding:3px 5px;border-radius:5px;cursor:pointer;text-align:left;color:var(--ink)}
.all-legend button:hover{background:color-mix(in srgb,var(--ink) 8%,transparent)}
.all-legend button.cur{outline:1px solid var(--gold);color:var(--gold)}
.all-legend i{width:14px;height:4px;border-radius:2px;display:inline-block}
.lg-h{grid-column:1/-1;font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-top:5px}

/* ---------- Panel ---------- */
.panel{grid-row:3;min-width:0;min-height:0;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.btn{border:1px solid var(--line2);background:transparent;border-radius:8px;padding:5px 11px;cursor:pointer;font-size:13px;color:var(--ink)}
.btn:hover:not(:disabled){border-color:var(--gold)}
.btn:disabled{opacity:.4;cursor:default}
.btn.primary{background:var(--gold);color:var(--gold-ink);border-color:var(--gold);font-weight:600}
.btn.on{background:var(--warn);border-color:var(--warn);color:#1a0f05}
.tabs{display:flex;gap:4px;padding:8px 10px 0;border-bottom:1px solid var(--line)}
.tab{background:none;border:0;padding:9px 10px;cursor:pointer;color:var(--muted);border-bottom:2px solid transparent;font-weight:500;font-size:13.5px}
.tab[aria-selected="true"]{color:var(--ink);border-bottom-color:var(--gold)}
.tabbody{overflow:auto;flex:1;min-height:0;padding:12px 14px 18px}
.plist{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(132px,1fr));border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--line)}
.plist li{display:flex;background:var(--surface,#FFF8EA);box-shadow:0 0 0 .5px var(--line)}
.prow{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:2px;min-height:52px;padding:8px 10px;cursor:pointer;border:0;background:none;text-align:left;width:100%;color:var(--ink);transition:background .15s}
.prow .pname{white-space:normal;line-height:1.25;font-size:13.5px}
.prow:hover{background:color-mix(in srgb,var(--gold) 9%,transparent)}
.prow.sel{background:color-mix(in srgb,var(--gold) 20%,transparent);box-shadow:inset 3px 0 0 var(--gold)}
.code{font:500 11.5px var(--font-mono);color:var(--gold)}
.pname{font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.dot{width:8px;height:8px;border-radius:50%;border:1.5px solid var(--line2)}
.dot.ok{background:var(--jade);border-color:var(--jade)}
.list-head{display:flex;justify-content:space-between;align-items:baseline;padding:0 8px 8px;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.card{display:grid;gap:12px}
.back{justify-self:start;background:none;border:0;color:var(--muted);cursor:pointer;padding:2px 0;font-size:12.5px}
.back:hover{color:var(--gold)}
.card h2{margin:0;font:600 26px/1.15 var(--font-display);letter-spacing:.01em;text-wrap:balance}
.card h2 .code{display:block;font-size:12px;margin-bottom:3px}
.sub{color:var(--muted);font-size:12.5px}
.tags{display:flex;flex-wrap:wrap;gap:5px}
.tag{font-size:11.5px;padding:2px 9px;border-radius:999px;background:color-mix(in srgb,var(--warn) 16%,transparent);color:var(--warn)}
.field{display:grid;gap:3px}
.field>span{font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--gold)}
.field p{margin:0}
.field input[type=text],.field textarea{width:100%;border:1px solid var(--line2);border-radius:8px;background:var(--bg);padding:7px 9px;resize:vertical;color:var(--ink)}
.check{display:flex;gap:8px;align-items:center;cursor:pointer;font-size:13px}
.coords{font:400 11.5px var(--font-mono);color:var(--muted);font-variant-numeric:tabular-nums}
.hb{display:grid;gap:12px;padding:14px;border:1px solid var(--line2);border-radius:12px;background:linear-gradient(180deg,color-mix(in srgb,var(--gold) 7%,var(--surface2)),var(--surface2))}
.hb-head{display:flex;flex-wrap:wrap;gap:6px 10px;align-items:baseline;padding-bottom:8px;border-bottom:1px solid var(--line2)}
.hb-src{font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:500}
.pre{white-space:pre-line;line-height:1.6}
.pf-list{margin:0;padding-left:18px;display:grid;gap:4px}
.steps{margin:0;padding-left:20px;display:grid;gap:7px;line-height:1.55}
.steps b{font-weight:600;color:var(--gold)}
.sec{font-size:10.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:18px 0 6px}
.nodelist{list-style:none;padding:0;margin:0;display:grid;gap:2px}
.nodelist li{display:flex;gap:6px;align-items:center;font-size:13px}
.nodelist button.lnk{background:none;border:0;padding:3px 4px;cursor:pointer;text-align:left;flex:1;border-radius:6px;color:var(--ink)}
.nodelist button.lnk:hover{background:color-mix(in srgb,var(--ink) 6%,transparent)}
.nodelist .mini{font-size:11.5px;padding:1px 7px}
.toggle{display:flex;align-items:center;gap:10px;padding:6px 0;cursor:pointer}
.toggle input,.check input{accent-color:var(--gold);width:16px;height:16px}
.range{display:grid;gap:4px;margin-top:10px}
.range input{accent-color:var(--gold)}
.note{font-size:12.5px;color:var(--muted);border-left:2px solid var(--line2);padding-left:10px;margin-top:14px}

/* ---------- Article reader ---------- */
.reader{position:fixed;inset:0;z-index:30;background:rgba(5,3,2,.66);backdrop-filter:blur(4px);display:flex;justify-content:center;padding:max(16px,env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-right,0px)) max(16px,env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px))}
.reader-inner{background:var(--surface);color:var(--ink);border:1px solid var(--line2);border-radius:16px;width:min(840px,100%);display:flex;flex-direction:column;min-height:0;max-height:100%}
.reader-head{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:14px 22px;border-bottom:1px solid var(--line);font:600 20px var(--font-display)}
.reader-body{overflow:auto;padding:8px 26px 30px;line-height:1.7;font-size:14.5px}
.reader-body h3{font:600 26px/1.25 var(--font-display);margin:18px 0 10px;color:var(--ink);text-wrap:balance}
.reader-body h4{font:600 20px/1.3 var(--font-display);margin:22px 0 6px;color:var(--gold)}
.reader-body h5,.reader-body h6{font-size:11.5px;margin:16px 0 4px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.reader-body p{margin:7px 0;max-width:72ch}
.reader-body .notice{border-left:3px solid var(--warn);background:color-mix(in srgb,var(--warn) 9%,transparent);padding:9px 13px;border-radius:7px;margin:12px 0}
.reader-body .cite{font-size:10.5px;vertical-align:super;color:var(--gold);text-decoration:none;margin-left:2px}
.tblwrap{overflow-x:auto;margin:12px 0}
.reader-body table{border-collapse:collapse;font-size:13.5px;min-width:100%}
.reader-body caption{text-align:left;font-weight:600;padding:4px 0;color:var(--muted)}
.reader-body th,.reader-body td{border:1px solid var(--line2);padding:7px 9px;vertical-align:top;text-align:left}
.reader-body th{background:color-mix(in srgb,var(--gold) 9%,transparent)}
.refs{font-size:13px;padding-left:22px}
.refs a{color:var(--gold);word-break:break-word}


/* ---------- Triều Đông Y theme overrides ---------- */
body{color:var(--text);background:var(--bg);background-image:radial-gradient(900px 500px at 10% -10%,rgba(215,186,122,.22),transparent 60%),radial-gradient(800px 500px at 100% 0%,rgba(139,46,36,.06),transparent 60%)}
.shell{grid-template-rows:auto auto minmax(0,1fr) auto}
.ribbon{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--brown);color:#EFE3CC;font-size:12.5px;padding:7px 16px;border-radius:8px;flex-wrap:wrap}
.ribbon b{color:var(--gold-soft);font-weight:600}
.ribbon .pill{background:linear-gradient(90deg,rgba(215,186,122,.2),rgba(184,138,68,.3));color:#fff;padding:2px 12px;border-radius:999px}
.topbar{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:10px 14px;box-shadow:var(--shadow);position:relative}
.topbar::after{content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;background:linear-gradient(90deg,transparent,var(--gold),transparent)}
.brand-name{font:700 21px/1 var(--font-display);color:var(--ink);letter-spacing:0}
.brand-name em{color:var(--red);font-style:normal}
.cur{border-left-color:var(--line2)}
.cur h1{font:600 17px/1.2 var(--font-display);color:var(--ink)}
.cur .sub{color:var(--muted)}
.tbtn{background:var(--surface);border-color:var(--line2);color:var(--text);border-radius:6px}
.tbtn:hover{border-color:var(--gold);color:var(--gold-dark)}
.tbtn[aria-pressed="true"],.tbtn.on,select.tbtn.on{background:linear-gradient(135deg,var(--gold-dark),#6F4D2C);border-color:#6F4D2C;color:#fff;box-shadow:0 6px 18px rgba(138,98,53,.25)}
select.tbtn{background-color:var(--surface)}
.menu-pop{background:var(--surface);border-color:var(--line2);box-shadow:var(--shadow-lg);border-radius:10px}
.menu-pop button{color:var(--text)}
.menu-pop button:hover{background:rgba(184,138,68,.14);color:var(--red)}
.menu-pop .mh,.mer-sep,.list-head,.sec,.lg-h,.hb-src{font-family:var(--font-eyebrow);font-style:italic;color:var(--gold-dark);letter-spacing:.08em}
.rail,.panel{background:linear-gradient(180deg,var(--surface),var(--surface2));border-color:rgba(184,138,68,.42);box-shadow:inset 0 0 0 4px var(--surface),inset 0 0 0 5px rgba(184,138,68,.18),var(--shadow)}
.search input{background:#fff;border:2px solid var(--line2);border-radius:999px;color:var(--ink)}
.search input:focus{border-color:var(--gold)}
.search svg{stroke:var(--gold-dark)}
.results{background:var(--surface);border-color:var(--line2);box-shadow:var(--shadow-lg)}
.results button{color:var(--text)}
.results button:hover,.results button.act{background:rgba(184,138,68,.14)}
.results .rc{color:var(--red)}
.mer{color:var(--text)}
.mer:hover{background:rgba(139,46,36,.06);color:var(--red)}
.mer[aria-selected="true"]{background:rgba(139,46,36,.08);color:var(--red);box-shadow:inset 3px 0 0 var(--red);font-weight:600}
.mer .md{box-shadow:0 0 0 2px #fff}
.mer .mc{color:var(--muted)}
.mer:focus-visible,.tbtn:focus-visible,.btn:focus-visible,.tab:focus-visible,.prow:focus-visible{outline-color:var(--gold-dark)}
.stage{border-color:rgba(184,138,68,.42);box-shadow:inset 0 0 0 4px rgba(255,248,234,.06),var(--shadow)}
.legend{background:rgba(255,248,234,.9);border-color:var(--line2);color:var(--text)}
.legend .k-main{border-color:var(--cinnabar)}
.all-legend{background:rgba(255,248,234,.94);border-color:var(--line2);color:var(--text)}
.all-legend button{color:var(--text)}
.all-legend button.cur{outline-color:var(--red);color:var(--red)}
.ticker{background:rgba(255,248,234,.95);color:var(--red);border-color:var(--gold)}
.ticker.deep{color:#3E4FA3;border-color:#93A6EE}
.lbl{background:rgba(42,32,25,.78);color:#F6EFE1;border-color:rgba(215,186,122,.25)}
.lbl.sel{color:var(--gold-soft);border-color:var(--gold-soft);background:rgba(42,32,25,.9)}
.btn{border-color:var(--line2);color:var(--text);border-radius:6px}
.btn:hover:not(:disabled){border-color:var(--gold);color:var(--gold-dark)}
.btn.primary{background:linear-gradient(135deg,var(--gold-dark),#6F4D2C);border-color:#6F4D2C;color:#fff;box-shadow:0 8px 24px rgba(138,98,53,.25)}
.btn.primary:hover:not(:disabled){color:#fff;background:#6F4D2C}
.btn.on{background:var(--red-soft);border-color:var(--red-soft);color:#fff}
.tabs{border-bottom-color:var(--line)}
.tab{color:var(--muted)}
.tab[aria-selected="true"]{color:var(--red);border-bottom-color:var(--red)}
.prow{color:var(--text)}
.prow:hover{background:rgba(139,46,36,.05)}
.prow.sel{background:rgba(184,138,68,.16)}
.code{color:var(--red)}
.dot{border-color:var(--line2)} .dot.ok{background:var(--herb);border-color:var(--herb)}
.back{color:var(--muted)} .back:hover{color:var(--red)}
.card h2{font:600 24px/1.2 var(--font-display);color:var(--ink)}
.field>span{font-family:var(--font-eyebrow);font-style:italic;color:var(--gold-dark);letter-spacing:.06em}
.field input[type=text],.field textarea{background:#fff;border-color:var(--line2);color:var(--ink)}
.tag{background:rgba(169,75,61,.1);color:var(--red-soft)}
.hb{background:#FFFDF6;border-color:rgba(184,138,68,.42);box-shadow:inset 0 0 0 4px #FFFDF6,inset 0 0 0 5px rgba(184,138,68,.18)}
.hb-head{border-bottom-color:var(--line)}
.steps b{color:var(--red)}
.nodelist button.lnk{color:var(--text)}
.toggle input,.check input,.range input{accent-color:var(--gold-dark)}
.note{border-left-color:var(--gold-soft)}
.reader{background:rgba(47,36,28,.55)}
.reader-inner{background:var(--surface);color:var(--text);border-color:var(--line2);border-radius:20px;box-shadow:0 18px 52px rgba(47,36,28,.18)}
.reader-head{font:600 18px var(--font-display);color:var(--ink);border-bottom-color:var(--line)}
.reader-body h3{font:600 24px/1.3 var(--font-display);color:var(--ink)}
.reader-body h4{font:600 18px/1.3 var(--font-display);color:var(--red)}
.reader-body h5,.reader-body h6{color:var(--gold-dark);font-family:var(--font-eyebrow);font-style:italic}
.reader-body .notice{border-left-color:var(--red-soft);background:rgba(169,75,61,.07)}
.reader-body .cite{color:var(--gold-dark)}
.reader-body th,.reader-body td{border-color:var(--line2)}
.reader-body th{background:rgba(184,138,68,.12)}
.refs a{color:var(--red)}
@media (max-width:1180px){ .shell{grid-template-columns:208px minmax(0,1fr) 336px} .brand-name{font-size:19px} }
@media (max-width:1100px){ .topbar{flex-wrap:wrap} .tools-wrap{flex:1 1 100%;align-items:flex-start;margin-left:0} .dock{justify-content:flex-start;flex-wrap:wrap} .tools{flex:1 1 100%;flex-wrap:wrap;margin-left:0} .menu-pop{right:auto;left:0} #moreMenu .menu-pop{left:auto;right:0} }
@media (max-width:900px){
  html,body{height:auto}
  .dock{flex-wrap:wrap}
  .shell{height:auto;grid-template-columns:1fr;grid-template-rows:auto}
  .rail,.stage,.panel{grid-row:auto}
  .cur{border-left:0;padding-left:0;flex-basis:100%;order:3}
  .cur h1{white-space:normal;overflow:visible}
  .cur .sub{white-space:normal;overflow:visible;text-overflow:clip;line-height:1.45;margin-top:2px}
  .tools{margin-left:0}
  .rail{max-height:none}
  .mer-switch{flex-direction:row;overflow-x:auto;gap:4px;padding-bottom:4px}
  .mer-sep{padding:8px 6px 0;white-space:nowrap}
  .mer{width:auto;flex:none;white-space:nowrap}
  .mer .mc{display:none}
  .stage{height:60svh;min-height:380px}
  .tabbody{overflow:visible}
  .legend{display:none}
}
.ai-badge{position:absolute;right:14px;bottom:14px;z-index:3;display:flex;align-items:center;gap:6px;pointer-events:none;
  background:rgba(255,248,234,.92);color:var(--gold-dark);border:1px solid var(--gold);border-radius:999px;padding:5px 12px 5px 10px;
  font:600 12.5px var(--font-body);letter-spacing:.02em;box-shadow:0 2px 10px rgba(42,32,25,.25);white-space:nowrap}
.ai-badge svg{width:14px;height:14px;fill:var(--gold);stroke:none}
@media (max-width:900px){ .ai-badge{bottom:auto;top:12px;right:12px;font-size:11.5px} .ticker{max-width:calc(100% - 28px)!important} }
/* ---------- Điện thoại: thanh công cụ gọn ---------- */
@media (max-width:600px){
  .tools-wrap{gap:8px;width:100%}
  .tools{display:grid!important;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;width:100%}
  .tools > .tbtn, .tools > details > summary.tbtn{flex-direction:column;justify-content:center;gap:3px;height:52px;padding:4px 2px;font-size:11px;line-height:1.15;border-radius:10px;white-space:normal;text-align:center;width:100%}
  .tools > details.menu{display:block;min-width:0}
  .tools > details > summary.tbtn{list-style:none}
  .tools > details > summary.tbtn::-webkit-details-marker{display:none}
  .tools > .tbtn svg, .tools > details > summary.tbtn svg{width:18px;height:18px}
  .dock{display:grid!important;grid-template-columns:38px 38px minmax(0,1fr) minmax(0,1.25fr);gap:6px;width:100%}
  .dock .tbtn{height:38px;font-size:12px;border-radius:9px}
  .dock #bPlay, .dock #bRestart{font-size:0;gap:0;padding:0;justify-content:center;width:38px}
  .dock #bPlay svg, .dock #bRestart svg{width:17px;height:17px}
  .dock select.tbtn{max-width:none;width:100%;min-width:0;padding-left:10px;padding-right:24px;background-position:calc(100% - 13px) 16px,calc(100% - 8px) 16px}
  .brand-name{font-size:20px}
}
.site-foot{grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:6px;padding:6px 12px 10px;text-align:center}
.sf-links{display:flex;flex-wrap:wrap;justify-content:center;gap:4px 18px}
.sf-links a{color:var(--gold-dark);font-size:13.5px;text-decoration:none;font-weight:600}
.sf-links a:hover{color:var(--red);text-decoration:underline}
.sf-copy{font-size:12px;color:var(--muted)}
.sitepage{position:fixed;inset:0;z-index:40;background:rgba(5,3,2,.62);backdrop-filter:blur(4px);display:flex;justify-content:center;padding:max(16px,env(safe-area-inset-top,0px)) 16px max(16px,env(safe-area-inset-bottom,0px))}
.sitepage[hidden]{display:none}
.sp-inner{background:var(--surface);color:var(--ink);border:1px solid var(--line2);border-radius:16px;width:min(820px,100%);display:flex;flex-direction:column;min-height:0;max-height:100%;box-shadow:var(--shadow-lg)}
.sp-head{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:14px 22px;border-bottom:1px solid var(--line);font:700 20px var(--font-display);color:var(--red)}
.sp-body{overflow:auto;padding:8px 26px 26px;line-height:1.7;font-size:15px}
.sp-body h2{font-size:18px;color:var(--red);margin:22px 0 8px}
.sp-body ul{padding-left:20px}.sp-body li{margin:4px 0}
.sp-body a{color:var(--red)}
.pg-lead{font-size:16px;font-weight:600;color:var(--text)}
.pg-upd{font-size:12.5px;color:var(--muted);font-style:italic;margin-bottom:4px}
.pg-todo{margin-top:22px;padding:10px 14px;border-left:3px solid var(--gold);background:rgba(184,138,68,.1);border-radius:6px;font-size:14px}
@media (max-width:600px){ .sitepage{padding:0} .sp-inner{border-radius:0;width:100%} .sp-body{padding:4px 16px 24px} .sp-head{padding:12px 16px;font-size:18px} }
.disclaimer{grid-column:1/-1;display:flex;gap:10px;align-items:flex-start;background:var(--brown);color:#EFE3CC;border-radius:8px;padding:9px 16px;font-size:12.5px;line-height:1.55}
.disclaimer p{margin:0}
.disclaimer b{color:var(--gold-soft)}
.disclaimer svg{flex:none;width:16px;height:16px;margin-top:2px;fill:none;stroke:var(--gold-soft);stroke-width:1.8;stroke-linejoin:round;stroke-linecap:round}
.draft-flag{background:#FBEFD2;border:1px dashed var(--gold-dark);color:var(--red);border-radius:8px;padding:9px 12px;margin:0 0 14px;font-size:13px;line-height:1.5}
.copy-link{justify-self:start;display:inline-flex;align-items:center;gap:6px;font-size:12.5px;padding:5px 12px}
.link-preview{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--muted);word-break:break-all}
.link-preview svg{flex:none;width:13px;height:13px;fill:none;stroke:var(--gold);stroke-width:1.8;stroke-linecap:round}
.copy-link svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round}

/* ---- Trình đọc bài: mô hình 3D luôn nhìn thấy ---- */
.reader-head{gap:6px!important}
#readerTitle{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rd-nav{width:34px;height:32px;padding:0;font-size:20px;line-height:1}
.rd-nav:disabled{opacity:.35;cursor:default}
.rd-model{display:none}
.rd-points{margin-top:26px;border-top:1px solid var(--line);padding-top:14px}
.rd-points-h{font:italic 600 12px var(--font-eyebrow);letter-spacing:.08em;text-transform:uppercase;color:var(--gold-dark);margin-bottom:8px}
.rd-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:6px}
.rd-pt{display:flex;flex-direction:column;align-items:flex-start;gap:1px;text-align:left;border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:6px 9px;cursor:pointer;color:var(--ink)}
.rd-pt .pname{font-size:13px;line-height:1.25}
.rd-pt{min-width:0}.rd-pt .pname,.rd-pt .code{white-space:normal;overflow-wrap:anywhere;max-width:100%}
.reader-body{overflow-x:hidden;overflow-wrap:break-word}
.reader-body img,.reader-body svg{max-width:100%;height:auto}
.rd-pt:hover{border-color:var(--gold)}
.rd-pt.on{background:rgba(184,138,68,.18);border-color:var(--gold)}
.rd-pt.short .pname::after{content:" ·";color:var(--muted)}
#listWrap.below{margin-top:18px;border-top:1px solid var(--line);padding-top:12px}
@media (min-width:901px){
  .reader{inset:0 0 0 auto!important;width:min(760px,50vw);background:none!important;backdrop-filter:none!important;padding:12px 12px 12px 0!important}
  .reader-inner{width:100%!important;max-height:none!important;height:100%;box-shadow:-12px 0 40px rgba(47,36,28,.22)!important}
  body.reading .shell{margin-right:calc(min(760px,50vw) - 2px);grid-template-columns:200px minmax(0,1fr) 0}
  body.reading .panel{display:none}
  body.reading .tools-wrap{flex:1 1 auto;min-width:0}
  body.reading .tools,body.reading .dock{flex-wrap:wrap;justify-content:flex-end}
  body.reading .rail{overflow:auto}
}
@media (max-width:900px){
  body.reading{overflow:hidden}
  body.reading .stage{position:fixed;left:0;right:0;top:0;height:42svh;min-height:0;z-index:31;border-radius:0;margin:0}
  .reader{padding:0!important;background:none!important;backdrop-filter:none!important;align-items:flex-end}
  .reader-inner{position:fixed;left:0;right:0;bottom:0;top:42svh;width:100%!important;max-height:none!important;border-radius:16px 16px 0 0!important;box-shadow:0 -10px 30px rgba(47,36,28,.25)!important}
  body.reading-full .stage{visibility:hidden}
  body.reading-full .reader-inner{top:0;border-radius:0!important}
  .rd-model{display:inline-block}
  .reader-head{padding:10px 12px!important;font-size:15px!important}
  .reader-body{padding:6px 16px 28px!important}
  body.reading .stage .legend, body.reading .stage .ai-badge, body.reading .stage .all-legend{display:none}
}

/* Phụ đề khi xem đường đi: xuống dòng thay vì cắt "…" */
.ticker{white-space:normal!important;overflow:visible!important;text-overflow:clip!important;font-size:13.5px!important;font-weight:600;line-height:1.4!important;
  padding:6px 14px!important;border-radius:14px!important;text-wrap:balance;font-weight:500!important;box-shadow:0 2px 10px rgba(42,32,25,.18)}
  .ticker b{font-weight:700}
  .ticker .tk-hint{opacity:.75;font-weight:400}
@media (max-width:900px){
  .ticker{left:10px!important;right:10px;bottom:10px!important;max-width:none!important;font-size:12.5px!important;line-height:1.38!important;padding:6px 11px!important;border-radius:12px!important;text-align:center}
}
#bVoice.on{background:var(--brown);color:#FFF8EA;border-color:var(--brown)}
#bVoice.on svg{stroke:#FFF8EA}

.mer-nav{margin-top:20px;border-top:1px solid var(--line);padding-top:14px}
.mer-nav .mn-h{font:600 15px var(--font-display);color:var(--ink);margin-bottom:4px}
.mer-nav .mn-sub{font:italic 600 11.5px var(--font-eyebrow);letter-spacing:.08em;text-transform:uppercase;color:var(--gold-dark);margin:12px 0 6px}
.mn-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:6px}
.mn-btn{display:flex;align-items:center;gap:7px;border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:7px 9px;cursor:pointer;color:var(--ink);text-align:left;font-size:13px}
.mn-btn:hover{border-color:var(--gold)}
.mn-btn.on{background:rgba(184,138,68,.18);border-color:var(--gold);font-weight:600}
.mn-btn .md{width:9px;height:9px;border-radius:50%;flex:none}
.mn-btn .mn-name{flex:1;min-width:0}
.mn-btn .mn-code{font-size:11px;color:var(--muted)}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}