*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
/* Grid/flex children default to min-width:auto and refuse to shrink below their
   content, which is the usual cause of mobile horizontal overflow. */
main *,footer *,header *{min-width:0}
h1,h2,h3,h4,p,li,blockquote,figcaption,dd,dt,summary{overflow-wrap:break-word}
.skip{position:absolute;left:-9999px;top:0;z-index:100;padding:.75rem 1.25rem;background:#000;color:#fff;text-decoration:none}
.skip:focus{left:0}
:focus-visible{outline:3px solid currentColor;outline-offset:2px}
.vh{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
details>summary{cursor:pointer;min-height:44px;display:flex;align-items:center}
details>summary::-webkit-details-marker{display:none}
@media (prefers-reduced-motion:reduce){*{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}

:root{--warm:#F1EEE9;--slate:#28333E;--forest:#315A4A;--clay:#B85D4C;--white:#FFFFFF;
 --quiet:#636a70;--rule:#d9d3ca;
 --claytext:#a45141}
body{background:var(--warm);color:var(--slate);
 font:400 17px/1.7 "Libre Franklin",system-ui,sans-serif}
h1,h2,h3{font-family:Lora,Georgia,serif;font-weight:600;margin:0;
 letter-spacing:-.008em}
h4{font-family:"Libre Franklin",system-ui,sans-serif;font-weight:700;margin:0}

/* the one measurement the whole page is built on */
.bf-frame{max-width:1300px;margin:0 auto;padding:0 28px;display:grid;
 grid-template-columns:minmax(0,1.35fr) minmax(0,300px) minmax(0,0.95fr);
 gap:0 34px}

/* ---- header: aligned to the spine, links pushed into the side space ---- */
.bf-hd{border-bottom:1px solid var(--rule);background:var(--white)}
.bf-hn{list-style:none;margin:0;padding:0;display:flex;gap:0 26px;flex-wrap:wrap;
 align-items:baseline}
.bf-hn--l{justify-content:flex-end}
.bf-hn a{display:inline-block;padding:13px 0;text-decoration:none;font-size:14.5px;
 font-weight:600}
.bf-hn a:hover{color:var(--claytext)}
.bf-hd-id{margin:0;text-align:center;padding:13px 0;font-family:Lora,Georgia,serif;
 font-weight:600;font-size:15.5px}

/* ---- the balanced opening ---- */
.bf-op{padding:0 0 64px}
.bf-mass-l{grid-column:1;margin-top:46px}
.bf-spine{grid-column:2;margin-top:0;border-left:2px solid var(--slate);
 border-right:2px solid var(--slate);padding:26px 22px 30px;text-align:center}
.bf-mass-r{grid-column:3;margin-top:124px}
.bf-k{margin:0 0 12px;font-size:13px;font-weight:700;color:var(--claytext);
 font-family:"Libre Franklin",system-ui,sans-serif}
h1{font-size:clamp(34px,3.8vw,58px);line-height:1.06}
.bf-spine-d{margin:16px 0 0;font-size:15.5px;font-weight:600;line-height:1.5}
.bf-spine-acts{margin:22px 0 0;display:grid;gap:9px}
.bf-a{display:block;padding:12px 16px;font-weight:700;font-size:15px;
 text-decoration:none;background:var(--forest);color:var(--white);
 font-family:"Libre Franklin",system-ui,sans-serif}
.bf-a--o{background:transparent;color:var(--slate);
 box-shadow:inset 0 0 0 2px var(--slate)}
.bf-a:hover{background:var(--clay);color:var(--white);box-shadow:none}
.bf-scene{margin:0}
.bf-scene img{width:100%;height:auto;aspect-ratio:3/2;object-fit:cover}
.bf-scene figcaption{margin-top:9px;font-size:12.5px;color:var(--quiet)}
.bf-purpose{margin:22px 0 0;font-size:18.5px;line-height:1.6;max-width:50ch;
 color:#3c4750}
.bf-themes-h{font-size:19px;margin:0 0 12px}
.bf-themes{list-style:none;margin:0;padding:0;border-top:2px solid var(--forest)}
.bf-themes li{padding:11px 0;border-bottom:1px solid var(--rule)}
.bf-themes b{display:block;font-size:15.5px;font-weight:700}
.bf-themes span{display:block;font-size:13px;color:var(--quiet);margin-top:2px}

/* ---- centred sections ---- */
.bf-s{padding:66px 0}
.bf-s--white{background:var(--white)}
.bf-s--slate{background:var(--slate);color:#ccd4da}
.bf-s--slate h2,.bf-s--slate h3,.bf-s--slate h4{color:var(--white)}
.bf-mid{max-width:1060px;margin:0 auto;padding:0 28px}
.bf-narrow{max-width:760px;margin:0 auto;padding:0 28px}
h2{font-size:clamp(26px,3vw,42px);line-height:1.1;margin:0 0 16px}
.bf-lead{font-size:18.5px;max-width:66ch;margin:0 0 28px;color:#3c4750}
.bf-s--slate .bf-lead{color:#aab6bf}
.bf-more{margin:30px 0 0;font-weight:700}
.bf-more a{color:var(--claytext)}
.bf-s--slate .bf-more a{color:#f0a698}

.bf-prio{list-style:none;margin:0;padding:0;display:grid;
 grid-template-columns:repeat(2,minmax(0,1fr));gap:34px}
.bf-prio li{border-top:3px solid var(--clay);padding:14px 0 0}
.bf-prio h3{font-size:21px;margin:0 0 7px}
.bf-prio p{margin:0;color:#3c4750}

/* ---- programme: alternating wide/narrow about one centreline ---- */
.bf-days{display:grid;gap:0}
.bf-day{margin:0 auto;padding:32px 28px;border-top:1px solid var(--rule);width:100%}
.bf-day--wide{max-width:1060px}
.bf-day--narrow{max-width:760px}
.bf-day-h{display:flex;flex-wrap:wrap;gap:4px 20px;align-items:baseline}
.bf-day h3{font-size:clamp(21px,2.3vw,30px);line-height:1.14}
.bf-day-d{margin:0;font-size:14.5px;font-weight:700;color:var(--forest)}
.bf-day-c{margin:0;font-size:13.5px;color:var(--quiet)}
.bf-day-b{margin:10px 0 0;color:#3c4750}
.bf-rows{list-style:none;margin:18px 0 0;padding:0}
.bf-rows li{padding:13px 0;border-top:1px dashed var(--rule)}
.bf-rows h4{font-size:17px;line-height:1.32}
.bf-when{margin:4px 0 0;font-size:13.5px;color:var(--quiet)}
.attr{margin:4px 0 0;font-size:14px;color:#3c4750}

/* ---- speakers: text-led in a narrow column, two full-width features ---- */
.bf-prof{padding:22px 0;border-top:1px solid var(--rule)}
.bf-prof h3{font-size:22px;line-height:1.18}
.bf-prof-r{margin:6px 0 0;font-size:15px;color:#3c4750}
.bf-prof-o{margin:3px 0 0;font-size:15px;font-weight:700;color:var(--forest)}
.bf-prof-s{margin:10px 0 0;font-size:16px;font-weight:700}
.bf-feature{display:grid;grid-template-columns:minmax(0,260px) minmax(0,1fr);
 gap:32px;align-items:start;padding:34px 0;border-top:3px solid var(--slate)}
.bf-feature img{width:100%;height:auto;aspect-ratio:4/5;object-fit:cover}
.bf-feature h3{font-size:clamp(23px,2.4vw,32px);line-height:1.14}
.bf-feature .bf-prof-r,.bf-feature .bf-prof-o{font-size:16.5px}
.bf-pts{margin:16px 0 0;padding-left:20px;color:#3c4750}
.bf-pts li{margin:0 0 7px}

/* ---- participation / sponsorship / venue ---- */
.bf-modes{list-style:none;margin:0;padding:0;display:grid;
 grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
.bf-modes h3{font-size:20px;margin:0 0 8px}
.bf-modes p{margin:0;color:#3c4750}
.bf-s--slate .bf-modes p{color:#aab6bf}
.bf-spon{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:36px;
 align-items:start}
.bf-spon-card{background:var(--warm);padding:24px;border-left:6px solid var(--clay)}
.bf-spon-card h3{font-size:19px;margin:0 0 10px}
.bf-spon-card p{margin:0 0 8px;font-size:15px}
.bf-spon-card a{color:var(--claytext);font-weight:700}
.bf-venue{margin:0 0 36px;display:grid;
 grid-template-columns:minmax(0,13rem) minmax(0,1fr);gap:0 28px}
.bf-venue dt{font-size:13.5px;color:var(--quiet);padding:11px 0;
 border-top:1px solid var(--rule)}
.bf-venue dd{margin:0;padding:11px 0;border-top:1px solid var(--rule);font-weight:600}
.bf-gal{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:24px;
 align-items:start}
.bf-gal figure{margin:0}
.bf-gal img{width:100%;height:auto;object-fit:cover}
.bf-gal figure:nth-child(1) img{aspect-ratio:3/2}
.bf-gal figure:nth-child(2) img{aspect-ratio:1/1}
.bf-gal figcaption{margin-top:8px;font-size:12.5px;color:var(--quiet)}

/* ---- faq / organiser ---- */
.bf-q{border-top:1px solid var(--rule);padding:4px 0}
.bf-q summary{font-family:Lora,Georgia,serif;font-weight:600;font-size:18.5px;
 padding:13px 0}
.bf-q p{margin:0 0 16px;color:#3c4750}
.bf-org{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:36px}
.bf-org h3{font-size:18px;margin:0 0 10px}
.bf-org p{margin:0 0 10px;font-size:15px;color:#3c4750}
.bf-org a{color:var(--claytext);font-weight:700}

/* ---- footer ---- */
.ft{background:var(--slate);color:#c5ced5}
.ft-in{max-width:1060px;margin:0 auto;padding:52px 28px;display:grid;gap:12px}
.ft-org strong{color:var(--white)}
.ft-links{list-style:none;display:flex;flex-wrap:wrap;gap:18px;padding:0;margin:8px 0}
.ft-links a{color:#f0a698;font-weight:700;font-size:14.5px}
.ft-note,.ft-id,.ft-contact{font-size:13.5px;color:#a9b4bc;margin:0;max-width:78ch}
.ft-contact a{color:var(--white)}
.ft-c{font-size:13px;color:#97a3ac;margin:10px 0 0}

@media (max-width:1040px){
  .bf-prio,.bf-modes,.bf-org,.bf-spon,.bf-gal{grid-template-columns:minmax(0,1fr)}
  .bf-feature{grid-template-columns:minmax(0,1fr);gap:22px}
  .bf-feature img{max-width:240px}
}
@media (max-width:860px){
  /* identity, actions, image, purpose, themes. Balance is kept by alternating
     which side the section headings are indented from. */
  /* linearised as identity, actions, image, purpose, themes -- which is not
     the desktop source order, so the masses are explicitly re-ordered. */
  .bf-frame{display:flex;flex-direction:column;gap:0}
  .bf-hd .bf-frame{gap:0}
  .bf-hd-id{order:-1;text-align:left;padding-bottom:0}
  .bf-hn,.bf-hn--l{justify-content:flex-start;gap:0 22px}
  .bf-op .bf-spine{order:1}
  .bf-op .bf-mass-l{order:2}
  .bf-op .bf-mass-r{order:3}
  .bf-mass-l,.bf-mass-r,.bf-spine{margin-top:0}
  .bf-spine{border-left:0;border-right:0;border-top:3px solid var(--slate);
   border-bottom:3px solid var(--slate);text-align:left;padding:24px 0 26px}
  .bf-spine-acts{grid-template-columns:1fr 1fr;gap:10px}
  .bf-a{text-align:center}
  .bf-mass-l{margin-top:30px}
  .bf-mass-r{margin-top:34px}
  .bf-day--wide,.bf-day--narrow{max-width:none}
  .bf-day--wide .bf-day-h{padding-left:0}
  .bf-day--narrow .bf-day-h{padding-left:18px;border-left:3px solid var(--clay)}
  .bf-venue{grid-template-columns:minmax(0,1fr);gap:0}
  .bf-venue dt{padding-bottom:0}
  .bf-venue dd{padding-top:2px;border-top:0}
  .bf-s{padding:50px 0}
}