/* Gonçalo Pena – site stylesheet (from the approved prototype proto-a.html). */
:root{
  --bg:#fff;--surface:#F8FAFC;--card:#fff;--text:#1F2937;--head:#111827;--ink:#000;--muted:#6B7280;--muted2:#374151;
  --border:#E5E7EB;--border2:#D1D5DB;--dm:#309CDE;--h2:#309CDE;--link:#0369A1;--tint:rgba(48,156,222,.2);--tint-h2:#0369A1;
  --bar:var(--blue-ui);--code:#F3F6F9;--ex-bg:#F6EFD9;--ex-fg:#6B5518;--chip-bg:#E6F3FB;--chip-fg:#0369A1;
  --tk-kw:#0369A1;--tk-str:#0F766E;--tk-com:#6B7280;--tk-num:#B45309;--tk-fn:#1E3A8A;--tk-op:#9F1239;
  --side:280px;--hdr:0px;--blue-ui:#1D7ABB;color-scheme:light
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0D1822;--surface:#122130;--card:#132432;--text:#D3DEE8;--head:#EEF4FA;--ink:#E6EEF5;--muted:#8DA2B4;--muted2:#B2C2D0;
  --border:#20364A;--border2:#2B4760;--h2:#5BB4EA;--link:#7CC4F0;--tint:rgba(48,156,222,.13);--tint-h2:#7CC4F0;
  --bar:#17567F;--code:#0A141D;--ex-bg:#3A3220;--ex-fg:#E4CF94;--chip-bg:#15334A;--chip-fg:#9FD3F3;
  --tk-kw:#7CC4F0;--tk-str:#5FD0C4;--tk-com:#7F95A8;--tk-num:#E7B96A;--tk-fn:#CFE6F7;--tk-op:#F29AAE;color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0D1822;--surface:#122130;--card:#132432;--text:#D3DEE8;--head:#EEF4FA;--ink:#E6EEF5;--muted:#8DA2B4;--muted2:#B2C2D0;
  --border:#20364A;--border2:#2B4760;--h2:#5BB4EA;--link:#7CC4F0;--tint:rgba(48,156,222,.13);--tint-h2:#7CC4F0;
  --bar:#17567F;--code:#0A141D;--ex-bg:#3A3220;--ex-fg:#E4CF94;--chip-bg:#15334A;--chip-fg:#9FD3F3;
  --tk-kw:#7CC4F0;--tk-str:#5FD0C4;--tk-com:#7F95A8;--tk-num:#E7B96A;--tk-fn:#CFE6F7;--tk-op:#F29AAE;color-scheme:dark}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{font-size:15px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.5;overflow-x:hidden}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
h1,h2,h3,h4{color:var(--head);letter-spacing:-.025em;line-height:1.2;margin:0}
p{margin:0 0 .8em}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--link);outline-offset:2px;border-radius:2px}
.tnum,time{font-variant-numeric:tabular-nums}
.wrap{max-width:1280px;margin:0 auto;padding:0 24px}
html{scroll-padding-top:calc(var(--hdr) + 24px)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.mono,pre,code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"DejaVu Sans Mono",monospace}

/* side column (desktop) / top bar (phones) */
.side{position:fixed;inset:0 auto 0 0;width:var(--side);z-index:60;display:flex;flex-direction:column;overflow-y:auto;background:var(--surface);border-right:1px solid var(--border)}
.mesh{flex:none;height:112px;position:relative;background:#0b2e4f}
.mesh canvas{display:block;width:100%;height:100%}
.id{position:relative;margin-top:-44px;padding:0 22px}
.id .photo{width:88px;height:88px;aspect-ratio:auto;border-radius:8px;border:3px solid var(--surface);font-size:30px;background-color:#1D7ABB}
.id .photo.has-photo{background:var(--surface)}
.nm{margin:12px 0 0;font-size:24px;font-weight:900;letter-spacing:-.02em;line-height:1.15;color:var(--head)}
.nm a{color:inherit}
.nm a:hover{text-decoration:none;color:var(--link)}
.who p{margin:2px 0 0;font-size:14px;line-height:1.45;color:var(--muted)}
.who .pos{color:var(--text);font-weight:600}
.menubtn{display:none}
.nav{margin:18px 12px 0}
.nav a{display:flex;align-items:center;min-height:36px;padding:0 12px;border-left:3px solid transparent;border-radius:8px;color:var(--text);font-size:15px;font-weight:600;transition:background-color .2s,color .2s}
.nav a:hover{color:var(--link);text-decoration:none}
.nav a.is-active{background:var(--tint);border-left-color:var(--dm);color:var(--link)}
.tools{margin-top:auto;padding:16px 22px 20px}
.tog{display:inline-flex;align-items:center;gap:8px;font:inherit;font-size:14px;font-weight:600;min-height:32px;padding:0 12px;border:1px solid var(--border2);border-radius:8px;background:var(--card);color:var(--text);cursor:pointer}
.tog:hover{border-color:var(--dm)}
.tog svg{width:16px;height:16px;flex:none}
.tog .i-sun,[data-mode="dark"] .i-moon{display:none}
[data-mode="dark"] .i-sun{display:block}
.tog-l::before{content:"Dark mode"}
[data-mode="dark"] .tog-l::before{content:"Light mode"}
.slinks{display:flex;flex-wrap:wrap;gap:0 4px;margin:12px 0 0;font-size:13px}
.side .slinks a{display:inline-flex;align-items:center;min-height:28px}
.side .slinks a:not(:last-child)::after{content:"·";margin-left:6px;color:var(--muted)}
.page{margin-left:var(--side);padding:0 clamp(24px,5vw,72px)}
.page>main,.foot>.page>*{max-width:1040px}
.page-t{margin:48px 0 -24px;font-size:clamp(2rem,4vw,2.6rem);font-weight:900;letter-spacing:-.035em;color:var(--head)}

/* sections */
.sec{padding:48px 0 8px}
.h2{color:var(--h2);font-size:28px;font-weight:600;letter-spacing:-.025em;margin:0 0 22px}
.h3{font-size:17px;font-weight:700;margin:0 0 10px}
.sec-head{display:flex;justify-content:space-between;align-items:baseline;gap:16px;flex-wrap:wrap}
.more{color:var(--ink);font-size:13px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;white-space:nowrap}
.more::after{content:"";display:inline-block;width:6px;height:6px;border:solid currentColor;border-width:2px 2px 0 0;transform:rotate(45deg);margin-left:7px;vertical-align:2px}
.lead{font-size:1.07rem;color:var(--muted2);max-width:70ch}
.muted{color:var(--muted)}
.small{font-size:13px}
.btn{display:inline-flex;align-items:center;font:inherit;font-size:12px;font-weight:600;line-height:1;border:1px solid var(--border2);background:var(--bg);color:var(--text);border-radius:6px;padding:6px 10px;cursor:pointer;text-decoration:none}
.btn:hover{border-color:var(--dm);color:var(--link);text-decoration:none}
.btn.is-copied{border-color:var(--dm);background:var(--chip-bg);color:var(--link)}
.btn-p{background:var(--blue-ui);border-color:var(--blue-ui);color:#fff}
.btn-p:hover{background:#0369A1;border-color:#0369A1;color:#fff}

/* about */
.about{max-width:72ch}
.photo{width:100%;aspect-ratio:4/5;border-radius:8px;overflow:hidden;display:grid;place-items:center;color:#fff;font-weight:900;font-size:68px;letter-spacing:-.04em;
  background:linear-gradient(rgba(255,255,255,.1) 1px,transparent 1px) 0 0/100% 19px,linear-gradient(90deg,rgba(255,255,255,.1) 1px,transparent 1px) 0 0/27px 100%,linear-gradient(160deg,#309CDE,#0b2e4f)}
.photo.has-photo{background:var(--surface)}
.photo img{width:100%;height:100%;object-fit:cover;display:block}
.role{font-weight:600;color:var(--head);margin-bottom:14px}
.role span{display:block;font-weight:400;color:var(--muted)}
.bio p{max-width:72ch}
.interests{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 28px;margin-top:6px;max-width:640px}
.interests li{position:relative;padding-left:16px}
.interests li::before{content:"";position:absolute;left:0;top:.62em;width:7px;height:7px;background:#309CDE}

/* research tiles */
.tiles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.tile{position:relative;display:block;min-height:200px;aspect-ratio:16/7;border-radius:8px;overflow:hidden;color:#fff;isolation:isolate}
.tile canvas,.card-img canvas{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;z-index:-2;transition:transform .5s}
.tile::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(to top,rgba(0,0,0,.74),rgba(0,0,0,.22) 70%);transition:background .3s}
.tile:hover{text-decoration:none}
.tile:hover canvas{transform:scale(1.04)}
.tile:hover::after{background:linear-gradient(to top,rgba(0,0,0,.66),rgba(0,0,0,.08) 70%)}
.tile-b{position:absolute;left:0;right:0;bottom:0;padding:20px 22px}
.tile-n{display:block;font-size:12px;font-weight:600;color:rgba(255,255,255,.85);font-variant-numeric:tabular-nums;margin-bottom:4px}
.tile-l{display:block;font-size:17px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;line-height:1.25}
.tile-d{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:13px;color:rgba(255,255,255,.85);margin-top:6px;max-width:60ch}

/* bramble */
.bram{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,440px);gap:48px;align-items:start}
.bram-id{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.bram-id img{width:54px;height:auto}
.bram-id b{display:block;font-size:22px;font-weight:700;color:var(--head);letter-spacing:-.02em}
.logo-d{display:none}
:root[data-theme="dark"] .logo-l{display:none}
:root[data-theme="dark"] .logo-d{display:block}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .logo-l{display:none}:root:not([data-theme="light"]) .logo-d{display:block}}
.meta{display:flex;flex-wrap:wrap;gap:6px;margin:14px 0 18px}
.pill{font-size:12px;font-weight:600;border:1px solid var(--border2);border-radius:999px;padding:3px 10px;color:var(--muted2);font-variant-numeric:tabular-nums}
.links{display:flex;flex-wrap:wrap;gap:10px 24px;align-items:center}
.widget{--bp-accent:var(--dm);--bp-text:var(--text);--bp-muted:var(--muted);--bp-border:var(--border);--bp-surface:var(--surface);background:var(--card);border:1px solid var(--border);border-radius:8px;padding:18px}

/* event cards */
.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{position:relative}
.card-img{position:relative;aspect-ratio:16/10;border-radius:8px;overflow:hidden;isolation:isolate;margin-bottom:12px}
.card:hover canvas{transform:scale(1.05)}
.chip{position:absolute;left:10px;bottom:10px;background:#fff;color:#111827;border-radius:6px;padding:3px 9px;font-weight:700;font-size:13px;font-variant-numeric:tabular-nums;box-shadow:0 2px 6px rgba(0,0,0,.2)}
.card-v{font-size:12px;color:var(--muted);margin:0 0 4px}
.card h3{font-size:15px;font-weight:700;line-height:1.35;letter-spacing:-.01em;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card h3 a{color:var(--head)}
.card h3 a::after{content:"";position:absolute;inset:0}
.card:hover h3 a{text-decoration:underline;text-underline-offset:3px}

/* pale-blue news panel */
.panel{background:var(--tint);padding:40px 32px 36px;margin-top:56px}
.panel .h2{color:var(--tint-h2)}
.panel .grp+.grp{margin-top:36px;padding-top:32px;border-top:1px solid rgba(48,156,222,.35)}
.news{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 32px}
.news .d{display:block;font-size:12px;color:var(--muted2);margin-bottom:4px;font-variant-numeric:tabular-nums}
.news .t{display:block;font-weight:700;color:var(--head);line-height:1.35}
.news a.t:hover{color:var(--link)}
.news .s{display:block;font-size:13px;color:var(--muted2);margin-top:3px}

/* contact */
.contact{scroll-margin-top:calc(var(--hdr) + 70px)}
.cgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.cgrid p+h3{margin-top:18px}
.cgrid h3{font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.email{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.email .mono{font-size:14px;color:var(--head)}
.plinks li{display:flex;justify-content:space-between;gap:12px;padding:5px 0;border-bottom:1px solid var(--border)}
.plinks .h{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* publications */
.fld{display:flex;flex-direction:column;gap:4px;min-width:0}
.fld label{font-size:11px;font-weight:600;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}
.fld input,.fld select{font:inherit;font-size:14px;height:38px;padding:0 10px;border:1px solid var(--border2);border-radius:6px;background:var(--bg);color:var(--text);width:100%;min-width:0}
.fld input:focus-visible,.fld select:focus-visible{outline:2px solid var(--dm);outline-offset:1px}
.count{margin:14px 0 6px;font-size:13px;color:var(--muted)}
.count strong{color:var(--head)}
.yg{display:grid;grid-template-columns:96px minmax(0,1fr);gap:0 24px;border-top:1px solid var(--border2);padding-top:6px;margin-top:18px}
.yg-y{font-size:22px;font-weight:900;color:var(--h2);font-variant-numeric:tabular-nums;padding-top:12px}
.pub{padding:12px 0 14px}
.pub+.pub{border-top:1px solid var(--border)}
.pub-t{font-weight:600;font-size:15.5px;color:var(--head);margin:0 0 3px;line-height:1.35}
.pub-head{display:flex;justify-content:space-between;align-items:flex-start;gap:6px 20px}
.pub-jcr{flex:none;margin:1px 0 0;text-align:right;font-size:12.5px;line-height:1.4;color:var(--muted2);font-variant-numeric:tabular-nums}
.pub-jcr .q{display:inline-block;font-weight:700;font-size:11.5px;color:var(--link);background:var(--tint);border-radius:4px;padding:0 6px}
.pub-jcr sup{font-size:9px;margin-left:1px}
.pub-jcr .area{display:block;font-size:12px;color:var(--muted);max-width:22ch;margin-left:auto}
.jcr-note{margin-top:18px}
@media (max-width:640px){.pub-head{flex-direction:column}.pub-jcr{text-align:left;margin:0 0 4px}.pub-jcr .area{display:inline;margin-left:6px}}
.pub-a{margin:0 0 2px}
.pub-a strong{color:var(--head)}
.coauth{color:var(--muted)}
.pub-v{margin:0 0 8px;color:var(--muted);font-size:14px}
.pub-ty{font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;margin-left:6px;color:var(--muted)}
.pub-row{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;justify-content:space-between}
.chips,.acts{display:flex;flex-wrap:wrap;gap:6px}
.tchip{font:inherit;font-size:12px;font-weight:600;border:0;border-radius:4px;background:var(--chip-bg);color:var(--chip-fg);padding:3px 8px;cursor:pointer}
.tchip:hover{background:var(--blue-ui);color:#fff}
.bib{margin-top:10px}
.bib pre,.code{background:var(--code);border:1px solid var(--border);padding:12px 14px;font-size:12.5px;line-height:1.55;overflow-x:auto;margin:0 0 8px;color:var(--text);tab-size:2}
.empty{padding:24px 0;color:var(--muted)}
.cv{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 48px}
.cv li{padding:7px 0;border-bottom:1px solid var(--border);display:grid;grid-template-columns:88px minmax(0,1fr);gap:12px}
.cv li .y{color:var(--muted);font-size:13px;font-variant-numeric:tabular-nums;padding-top:1px}
.cv li .x{font-size:13px;color:var(--muted)}
.cv-foot{margin-top:28px;padding-top:18px;border-top:1px solid var(--border2)}

/* software */
.sw-top{display:grid;grid-template-columns:120px minmax(0,1fr);gap:28px;align-items:center}
.sw-top img{width:120px;height:auto}
.sw-top h2{font-size:34px;font-weight:700;letter-spacing:-.03em;color:var(--head);margin-bottom:6px}
/* text and widget sit side by side when the column is wide enough, and stack otherwise */
.sw-grid{display:flex;flex-wrap:wrap;gap:24px 36px;align-items:flex-start}
.sw-text{flex:1 1 340px;min-width:0}
.sw-text p{margin-bottom:.5em}
.sw-text .katex-display{margin:.5em 0;overflow-x:auto;overflow-y:hidden;padding:2px 0}
.sw-grid>.widget{flex:1 1 480px;max-width:600px;min-width:0}
.tabs{display:flex;gap:0;border-bottom:1px solid var(--border2);margin-bottom:0}
.tab{font:inherit;font-size:13px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;background:none;border:0;border-bottom:2px solid transparent;margin-bottom:-1px;color:var(--muted);padding:10px 16px;cursor:pointer}
.tab[aria-selected="true"]{color:var(--ink);border-bottom-color:var(--ink)}
.codebox{position:relative}
.codebox .btn{position:absolute;top:10px;right:10px}
.codebox .code{padding-right:70px;border-top:0}
.tok-kw{color:var(--tk-kw);font-weight:600}.tok-str{color:var(--tk-str)}.tok-com{color:var(--tk-com);font-style:italic}.tok-num{color:var(--tk-num)}.tok-fn{color:var(--tk-fn)}.tok-op{color:var(--tk-op)}
.feat{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 28px}
.feat div{border-top:2px solid #309CDE;padding-top:12px}
.feat h3{font-size:15px;font-weight:700;margin-bottom:6px}
.feat p{font-size:14px;color:var(--muted2);margin:0}

/* teaching */
.courses{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.course{border:1px solid var(--border);border-top:3px solid #309CDE;border-radius:8px;padding:18px 20px;background:var(--card);display:flex;flex-direction:column}
.course h3{font-size:18px;font-weight:700}
.course .en{color:var(--muted);font-size:13px;margin:2px 0 12px}
.course .go{margin-top:auto;padding-top:12px}
.tbl{overflow-x:auto;border:1px solid var(--border)}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:14px}
th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--border);vertical-align:top}
th{font-size:11px;font-weight:600;letter-spacing:.07em;text-transform:uppercase;color:var(--muted);background:var(--surface)}
tr:last-child td{border-bottom:0}
td .en{display:block;color:var(--muted);font-size:13px}
.notes li{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 16px;padding:10px 0;border-bottom:1px solid var(--border)}

/* footer */
.foot{margin-top:72px;border-top:1px solid var(--border2);padding:14px 0 36px;font-size:11px;color:var(--muted)}
.foot-crumb{margin:0 0 10px}
.foot-crumb span+span::before{content:"·";margin:0 8px}
.foot-row{display:flex;justify-content:space-between;gap:10px 24px;flex-wrap:wrap}
.foot-row ul{display:flex;gap:16px;flex-wrap:wrap}
.foot a{color:var(--muted2)}

@media (max-width:1024px){
  .cards,.news,.feat{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bram,.am-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .bram .widget{max-width:480px}
  .courses{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:800px){
  :root{--hdr:60px}
  body{padding-top:var(--hdr)}
  .side{inset:0 0 auto 0;width:100%;height:auto;max-height:100vh;flex-direction:row;flex-wrap:wrap;align-items:center;overflow:visible;border-right:0;border-bottom:1px solid var(--border)}
  .mesh{display:none}
  .id{display:flex;align-items:center;gap:12px;flex:1;min-width:0;height:var(--hdr);margin:0;padding:0 16px}
  .id .photo{width:40px;height:40px;border-width:0;font-size:15px;flex:none}
  .nm{margin:0;font-size:17px}
  .who p{display:none}
  .who .pos{display:block;font-size:12px;font-weight:400;color:var(--muted)}
  .menubtn{display:inline-flex;align-items:center;margin:0 16px 0 0;min-height:44px;padding:0 14px;font:inherit;font-size:14px;font-weight:600;border:1px solid var(--border2);border-radius:8px;background:var(--card);color:var(--text);cursor:pointer}
  .nav,.tools{display:none;width:100%}
  .side.open{overflow-y:auto}
  .side.open .nav{display:block;margin:0 8px}
  .side.open .tools{display:block;margin:0;padding:12px 16px 20px}
  .page{margin-left:0;padding:0 16px}
  .panel{margin-left:-16px;margin-right:-16px}
  .page-t{margin-top:32px}
}
@media (max-width:720px){
  .interests,.tiles,.cgrid,.cv,.courses{grid-template-columns:minmax(0,1fr)}
  .tile{aspect-ratio:auto;min-height:180px}
  .tile-d{display:none}
  .panel{padding:28px 16px}
  .yg{grid-template-columns:minmax(0,1fr)}
  .yg-y{padding-top:10px}
  .sw-top{grid-template-columns:72px minmax(0,1fr);gap:16px}
  .sw-top img{width:72px}
  .sw-top h2{font-size:26px}
  .sec{padding-top:40px}
  .h2{font-size:24px}
}
@media (max-width:520px){
  .cards,.news,.feat{grid-template-columns:minmax(0,1fr)}
  .cv li{grid-template-columns:minmax(0,1fr);gap:0}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}}

/* production additions: readable without JavaScript, and theme filtering by hiding pre-rendered items */
.tile,.card-img{background:#0b2e4f}
.pub+.pub{border-top:0}
.pub:not([hidden])~.pub{border-top:1px solid var(--border)}

/* publications timeline: a rail that fills to the reading line as you scroll; the dots passed turn blue */
.tl{position:relative}
.tl::before,.tl::after{content:"";position:absolute;z-index:0;left:108px;top:36px;bottom:0;width:2px;margin-left:-1px;background:var(--border)}
.tl::after{background:#309CDE;transform-origin:top;transform:scaleY(var(--p,0))}
.tl .yg{border-top:0;margin-top:0;padding-top:0}
.tl .yg+.yg{margin-top:20px}
.tl .yg{scroll-margin-top:calc(var(--hdr) + 70px)}
.tl .yg-y{transition:color .2s}
.yx{position:sticky;z-index:30;top:var(--hdr);display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;background:var(--bg);padding:10px 0;margin:8px 0 4px;border-bottom:1px solid var(--border)}
.yx::-webkit-scrollbar{display:none}
.yx a{flex:none;font-size:12.5px;font-weight:600;font-variant-numeric:tabular-nums;color:var(--muted);padding:3px 9px;border-radius:4px;transition:background-color .2s,color .2s}
.yx a:hover{color:var(--link);text-decoration:none}
.yx a[aria-current="true"]{background:var(--blue-ui);color:#fff}
.tl .pub{position:relative}
.tl .pub::before{content:"";position:absolute;z-index:1;left:-12px;top:17px;width:11px;height:11px;margin-left:-5.5px;border-radius:50%;background:var(--bg);border:2px solid var(--border2);transition:background-color .2s,border-color .2s}
.tl .pub.is-past::before{background:#309CDE;border-color:#309CDE}
.tl-on .yg-y{color:var(--muted)}
.tl-on .yg.is-now .yg-y{color:var(--h2)}
@media (max-width:720px){
  .tl::before,.tl::after{left:5px;top:12px}
  .tl .yg{padding-left:24px}
  .tl .pub::before{left:-19px}
}

/* publications: theme filter bar */
.tbar{display:flex;flex-wrap:wrap;gap:6px;margin:18px 0 0}
.tf{font:inherit;font-size:13px;font-weight:600;border:1px solid var(--border2);border-radius:999px;background:var(--bg);color:var(--muted2);padding:5px 12px;cursor:pointer;transition:background-color .15s,border-color .15s,color .15s}
.tf span{font-weight:400;color:var(--muted);font-variant-numeric:tabular-nums;margin-left:2px}
.tf:hover{border-color:var(--dm);color:var(--link)}
.tf[aria-pressed="true"]{background:var(--blue-ui);border-color:var(--blue-ui);color:#fff}
.tf[aria-pressed="true"] span{color:rgba(255,255,255,.85)}

/* publications: DOI link with an icon copy button, and BibTeX that copies on click */
.split{display:inline-flex}
.split .btn:first-child{border-radius:6px 0 0 6px}
.split .btn-ic{border-radius:0 6px 6px 0;margin-left:-1px;padding:0 7px}
.btn-ic svg{width:13px;height:13px;display:block}
.btn-ic .i-ok,.btn-ic.is-copied .i-copy{display:none}
.btn-ic.is-copied .i-ok{display:block}
.bib{position:relative}
.bib pre{cursor:copy;padding-right:72px}
.bib .btn{position:absolute;top:8px;right:8px}
.split .btn:hover,.split .btn:focus-visible{position:relative;z-index:1}

/* accessibility: skip link, and link targets of at least 24px (44px on touch screens) */
.skip{position:fixed;z-index:100;left:16px;top:-80px;background:var(--bg);color:var(--head);border:2px solid var(--link);border-radius:6px;padding:10px 16px;font-weight:600;transition:top .15s}
.skip:focus{top:calc(env(safe-area-inset-top,0px) + 8px);text-decoration:none}
#main:focus{outline:none}
.foot a,.plinks a,.links a,.cgrid p a,.more{display:inline-flex;align-items:center;min-height:24px}
.foot-row ul{gap:4px 16px}
.plinks li{align-items:center}
@media (pointer:coarse){
  .foot a,.plinks a,.links a,.cgrid p a,.more,.nav a,.side .slinks a{min-height:44px}
  .foot-row ul,.links{gap:0 20px}
  .tog{min-height:44px}
  .btn,.tf,.tchip{min-height:36px}
  .yx a{padding:10px 12px}
}

/* previous courses: on phones each row becomes a short stacked entry instead of a sideways-scrolling table */
@media (max-width:720px){
  .tbl{border:0;overflow:visible}
  .tbl table{min-width:0}
  .tbl thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
  .tbl tr{display:block;padding:12px 0;border-bottom:1px solid var(--border)}
  .tbl tr:last-child{border-bottom:0}
  .tbl td{display:block;padding:0;border:0}
  .tbl td:first-child{font-weight:600;color:var(--head);font-size:15px}
  .tbl td .en{font-weight:400}
  .tbl td+td{margin-top:2px;color:var(--muted)}
  .tbl td:last-child{font-variant-numeric:tabular-nums}
}