/* Стилі сторінки буклета. Кольори --brand і --accent задає кожна подія у своєму index.html. */

:root {
  --brand: #19598f;
  --accent: #ecd578;
  --brand-deep: color-mix(in srgb, var(--brand) 68%, #000);
  --brand-soft: color-mix(in srgb, var(--brand) 9%, #fff);
  --ink: #1b2b3a;
  --muted: #667789;
  --line: #dfe7ee;
  --bg: #f4f7fa;
  --card: #fff;
  --radius: 20px;
  --shadow: 0 1px 2px rgb(16 40 64 / .05), 0 8px 28px rgb(16 40 64 / .07);
  font-family: Manrope, system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  font-synthesis: none;
  color: var(--ink);
  background: var(--bg);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; min-height: 100svh; line-height: 1.5; }
/* Тло сторінки — діагональний градієнт у кольорах події. Окремий нерухомий шар, бо background-attachment: fixed на телефонах смикається */
body::before {
  content: ""; position: fixed; inset: 0; z-index: -1;
  background: linear-gradient(135deg, color-mix(in srgb, var(--brand) 42%, #fff) 0%, color-mix(in srgb, var(--brand) 14%, #fff) 45%, color-mix(in srgb, var(--accent) 50%, #fff) 100%);
}
img { max-width: 100%; display: block; }
h1, h2, h3, p, ul, figure { margin: 0; }
ul { padding: 0; list-style: none; }
a { color: var(--brand); }
button { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; padding: 0; text-align: inherit; }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--brand) 55%, #fff); outline-offset: 2px; border-radius: 8px; }

.bk-icon { width: 1.25em; height: 1.25em; flex: none; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.bk-skip { position: absolute; left: -999px; top: 8px; z-index: 50; background: var(--card); padding: 8px 14px; border-radius: 10px; }
.bk-skip:focus { left: 8px; }
.bk-noscript { max-width: 640px; margin: 15vh auto; padding: 0 24px; display: grid; gap: 12px; }
.bk-preview-bar { background: #1b2b3a; color: #fff; font-size: 13px; font-weight: 600; text-align: center; padding: 7px 16px; }

/* ---------- Шапка ---------- */

.bk-header {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  /* Лого й кнопки стоять по краях колонки буклета (.bk-main), а не по краях вікна */
  height: 64px; padding: 0 calc(max(0px, (100% - 1240px) / 2) + clamp(16px, 4vw, 40px));
  background: color-mix(in srgb, var(--card) 70%, transparent);
  backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid var(--line);
}
.bk-brand { display: flex; align-items: center; min-width: 0; font-weight: 800; letter-spacing: .02em; color: var(--brand-deep); text-decoration: none; text-transform: uppercase; font-size: 15px; }
.bk-brand span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bk-brand img { height: 36px; width: auto; }
.bk-header-tools { display: flex; align-items: center; gap: 10px; flex: none; }
.bk-icon-btn { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 12px; color: var(--brand-deep); }
.bk-icon-btn:hover { background: var(--brand-soft); }
.bk-lang { display: flex; padding: 3px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
.bk-lang button { padding: 6px 12px; border-radius: 9px; font-size: 13px; font-weight: 700; color: var(--muted); }
.bk-lang button[aria-pressed="true"] { background: var(--brand); color: #fff; }

.bk-main { max-width: 1240px; margin: 0 auto; padding: clamp(16px, 3vw, 32px) clamp(16px, 4vw, 40px) 56px; }
.bk-main:focus { outline: none; }

/* ---------- Головна буклета ---------- */

.bk-home { display: grid; gap: clamp(14px, 2vw, 24px); grid-template-columns: minmax(0, 1.55fr) minmax(300px, 1fr); align-items: stretch; }

.bk-hero {
  position: relative; overflow: hidden; isolation: isolate;
  min-height: clamp(380px, 62svh, 620px);
  display: flex; align-items: flex-end;
  border-radius: calc(var(--radius) + 8px);
  background: linear-gradient(140deg, var(--brand) 0%, var(--brand-deep) 100%);
  color: #fff; box-shadow: var(--shadow);
}
.bk-hero-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; }
.bk-hero.has-image::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(to top, color-mix(in srgb, var(--brand-deep) 94%, transparent) 0%, color-mix(in srgb, var(--brand-deep) 55%, transparent) 42%, transparent 78%);
}
.bk-hero-art { position: absolute; inset: 0; z-index: -1; overflow: hidden; }
.bk-hero-art::before, .bk-hero-art::after { content: ""; position: absolute; border-radius: 50%; }
.bk-hero-art::before { width: 62%; aspect-ratio: 1; right: -16%; top: -22%; background: radial-gradient(circle at 35% 35%, color-mix(in srgb, var(--accent) 85%, transparent), transparent 68%); opacity: .55; }
.bk-hero-art::after { width: 46%; aspect-ratio: 1; right: 8%; top: 14%; border: 1.5px solid rgb(255 255 255 / .28); box-shadow: 0 0 0 46px rgb(255 255 255 / .05), 0 0 0 110px rgb(255 255 255 / .035); }
.bk-hero-body { padding: clamp(22px, 4vw, 48px); display: grid; gap: 14px; max-width: 760px; }
.bk-kicker { justify-self: start; font-size: 12px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: var(--brand-deep); background: var(--accent); padding: 6px 12px; border-radius: 999px; }
.bk-hero h1 { font-size: clamp(30px, 5.2vw, 60px); line-height: 1.04; font-weight: 800; letter-spacing: -.02em; text-wrap: balance; }
.bk-subtitle { font-size: clamp(15px, 1.5vw, 19px); line-height: 1.45; opacity: .92; text-wrap: pretty; }
.bk-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.bk-chip { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px; font-size: 14px; font-weight: 600; color: #fff; text-decoration: none; background: rgb(255 255 255 / .16); border: 1px solid rgb(255 255 255 / .26); backdrop-filter: blur(8px); }
a.bk-chip:hover, button.bk-chip:hover { background: rgb(255 255 255 / .28); }
button.bk-chip { cursor: pointer; font-family: inherit; }
.bk-btn:disabled, .bk-chip:disabled { opacity: .7; cursor: progress; }

.bk-side { display: flex; flex-direction: column; gap: clamp(14px, 2vw, 24px); }
.bk-hub { display: grid; gap: 12px; flex: 1; grid-auto-rows: 1fr; }
.bk-tile {
  display: flex; align-items: center; gap: 16px; padding: 18px 20px; min-height: 84px;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  color: var(--ink); text-decoration: none; box-shadow: var(--shadow);
  transition: transform .18s, border-color .18s, box-shadow .18s;
  animation: bk-rise .5s both; animation-delay: calc(var(--i) * 60ms);
}
.bk-tile:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--brand) 45%, var(--line)); }
.bk-tile-icon { width: 52px; height: 52px; flex: none; display: grid; place-items: center; border-radius: 15px; background: var(--brand-soft); color: var(--brand); font-size: 21px; transition: background .18s, color .18s; }
.bk-tile:hover .bk-tile-icon { background: var(--brand); color: #fff; }
.bk-tile-text { display: grid; gap: 2px; flex: 1; min-width: 0; }
.bk-tile-text strong { font-size: 18px; font-weight: 700; }
.bk-tile-text small { font-size: 13.5px; color: var(--muted); }
.bk-tile-arrow { color: var(--muted); transition: transform .18s, color .18s; }
.bk-tile:hover .bk-tile-arrow { transform: translateX(4px); color: var(--brand); }
@keyframes bk-rise { from { opacity: 0; transform: translateY(10px); } }

.bk-social { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding: 16px 20px; border-radius: var(--radius); background: var(--brand-deep); color: #fff; }
.bk-social h2 { font-size: 15px; font-weight: 700; }
.bk-social-links { display: flex; gap: 8px; }
.bk-social-links a { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 12px; color: #fff; background: rgb(255 255 255 / .14); font-size: 17px; transition: background .18s, color .18s; }
.bk-social-links a:hover { background: var(--accent); color: var(--brand-deep); }

.bk-partners { margin-top: clamp(24px, 4vw, 44px); }
.bk-partners h2 { font-size: 12px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: var(--ink); text-align: center; margin-bottom: 16px; }
.bk-partner-track { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.bk-partner-list.is-carousel { overflow: hidden; mask-image: linear-gradient(to right, transparent, #000 6%, #000 94%, transparent); }
.is-carousel .bk-partner-track { flex-wrap: nowrap; justify-content: flex-start; width: max-content; animation: bk-marquee var(--bk-loop, 30s) linear infinite; }
.is-carousel .bk-partner { flex: none; }
.is-carousel:hover .bk-partner-track, .is-carousel:focus-within .bk-partner-track { animation-play-state: paused; }
/* Зсув на половину стрічки плюс половину проміжку — рівно одна копія логотипів */
@keyframes bk-marquee { to { transform: translateX(calc(-50% - 6px)); } }
.bk-partner { height: 84px; min-width: 150px; max-width: 240px; padding: 16px 22px; display: grid; place-items: center; background: var(--card); border: 1px solid var(--line); border-radius: 16px; color: var(--ink); font-weight: 700; font-size: 14px; text-align: center; text-decoration: none; }
.bk-partner img { max-height: 52px; width: auto; object-fit: contain; }
a.bk-partner:hover { border-color: color-mix(in srgb, var(--brand) 45%, var(--line)); }

/* ---------- Внутрішні сторінки ---------- */

.bk-page-head { display: grid; gap: 6px; margin-bottom: clamp(18px, 3vw, 30px); justify-items: start; }
.bk-page-head h1 { font-size: clamp(28px, 4.4vw, 46px); line-height: 1.1; font-weight: 800; letter-spacing: -.02em; color: var(--brand-deep); }
.bk-page-head p { color: var(--ink); opacity: .82; font-weight: 500; }
.bk-page-head .bk-btn { margin-top: 8px; }
.bk-back { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 8px; padding: 7px 14px 7px 10px; border-radius: 999px; background: var(--card); border: 1px solid var(--line); font-size: 14px; font-weight: 600; text-decoration: none; }
.bk-back:hover { border-color: var(--brand); }

.bk-btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: 12px; background: var(--brand); color: #fff; font-size: 14px; font-weight: 700; text-decoration: none; white-space: nowrap; transition: background .18s; }
.bk-btn:hover { background: var(--brand-deep); }

.bk-empty { display: grid; justify-items: center; gap: 8px; padding: 64px 24px; text-align: center; background: var(--card); border: 1px dashed var(--line); border-radius: var(--radius); color: var(--muted); }
.bk-empty .bk-icon { font-size: 34px; color: var(--brand); opacity: .7; }
.bk-empty strong { font-size: 19px; color: var(--ink); }

.bk-prose { max-width: 760px; font-size: 17px; line-height: 1.65; display: grid; gap: 1em; text-wrap: pretty; }

/* Програма */
.bk-day + .bk-day { margin-top: 32px; }
.bk-day-title { font-size: 15px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--brand); margin-bottom: 12px; }
.bk-schedule { display: grid; gap: 12px; max-width: 900px; }
.bk-session { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.bk-session.is-now { border-color: var(--brand); box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 16%, transparent), var(--shadow); }
.bk-session summary, .bk-session-static { display: grid; gap: 8px; padding: 18px 22px; }
.bk-session summary { cursor: pointer; list-style: none; }
.bk-session summary::-webkit-details-marker { display: none; }
.bk-session-top { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.bk-session time { font-weight: 800; font-size: 15px; color: var(--brand-deep); font-variant-numeric: tabular-nums; }
.bk-type { font-size: 12px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; padding: 3px 10px; border-radius: 999px; background: var(--brand-soft); color: var(--brand); }
.bk-now { font-size: 12px; font-weight: 800; text-transform: uppercase; padding: 3px 10px; border-radius: 999px; background: var(--accent); color: var(--brand-deep); }
.bk-session h2 { font-size: clamp(17px, 2vw, 20px); line-height: 1.3; font-weight: 700; text-wrap: balance; }
.bk-session-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 4px; }
.bk-stack { display: flex; padding-left: 8px; }
.bk-stack .bk-avatar { margin-left: -8px; border: 2px solid var(--card); }
.bk-chevron { color: var(--muted); transition: transform .2s; }
details[open] .bk-chevron { transform: rotate(180deg); }
.bk-session-body { padding: 0 22px 20px; display: grid; gap: 10px; border-top: 1px solid var(--line); padding-top: 16px; }
.bk-session-body h3 { font-size: 12px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-top: 4px; }
.bk-note { color: var(--muted); font-size: 15px; }
.bk-session.is-break { display: flex; align-items: center; gap: 16px; padding: 14px 22px; background: transparent; box-shadow: none; border-style: dashed; }
.bk-session.is-break h2 { font-size: 16px; font-weight: 600; color: var(--muted); }
.bk-break-icon { font-size: 22px; color: var(--muted); }

.bk-people { display: grid; gap: 4px; }
.bk-person { display: flex; align-items: center; gap: 12px; width: 100%; padding: 8px; border-radius: 14px; }
.bk-person:hover { background: var(--brand-soft); }
.bk-person span { display: grid; min-width: 0; }
.bk-person strong { font-weight: 700; }
.bk-person em { font-style: normal; font-size: 12px; color: var(--brand); font-weight: 700; }
.bk-person small { color: var(--muted); font-size: 13.5px; line-height: 1.35; }

.bk-avatar { width: 40px; height: 40px; flex: none; border-radius: 50%; object-fit: cover; background: var(--brand-soft); }
.bk-avatar-empty, .bk-avatar-more { display: grid; place-items: center; color: var(--brand); font-size: 17px; }
.bk-avatar-more { font-size: 12px; font-weight: 800; }
.bk-avatar.is-large { width: 96px; height: 96px; font-size: 38px; }
.bk-avatar.is-xl { width: 132px; height: 132px; font-size: 52px; }

/* Спікери */
.bk-speakers { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); }
.bk-speaker { display: grid; justify-items: center; align-content: start; gap: 8px; padding: 24px 18px; text-align: center; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); transition: transform .18s, border-color .18s; }
.bk-speaker:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--brand) 45%, var(--line)); }
.bk-speaker strong { font-size: 16.5px; font-weight: 700; line-height: 1.25; margin-top: 6px; }
.bk-speaker small { color: var(--muted); font-size: 13.5px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }

/* Матеріали */
.bk-materials { display: grid; gap: 12px; max-width: 900px; }
.bk-material { display: flex; align-items: center; gap: 16px; padding: 16px 20px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.bk-format { width: 52px; height: 52px; flex: none; display: grid; place-items: center; border-radius: 14px; background: var(--brand-soft); color: var(--brand); font-size: 12px; font-weight: 800; letter-spacing: .04em; }
.bk-material-text { flex: 1; min-width: 0; }
.bk-material h2 { font-size: 16.5px; font-weight: 700; line-height: 1.3; }
.bk-material p { color: var(--muted); font-size: 14px; }

/* Фото */
.bk-gallery { columns: 4 240px; column-gap: 12px; }
.bk-photo { display: block; width: 100%; margin-bottom: 12px; border-radius: 16px; overflow: hidden; background: var(--line); break-inside: avoid; }
.bk-photo img { width: 100%; height: auto; transition: transform .35s; }
.bk-photo:hover img { transform: scale(1.04); }

/* ---------- Діалоги ---------- */

.bk-dialog { border: 0; padding: 0; width: min(560px, calc(100vw - 24px)); max-height: calc(100svh - 24px); border-radius: 24px; background: var(--card); color: var(--ink); box-shadow: 0 30px 80px rgb(10 25 40 / .35); }
.bk-dialog::backdrop { background: rgb(12 26 40 / .62); backdrop-filter: blur(4px); }
.bk-dialog[open] { animation: bk-rise .25s both; }
.bk-dialog-close { position: absolute; top: 12px; right: 12px; z-index: 2; width: 40px; height: 40px; display: grid; place-items: center; border-radius: 50%; background: var(--bg); font-size: 16px; }
.bk-speaker-card { display: grid; justify-items: center; gap: 10px; padding: 36px 28px 30px; text-align: center; }
.bk-speaker-card h2 { font-size: 23px; font-weight: 800; line-height: 1.2; margin-top: 8px; }
.bk-role { color: var(--muted); }
.bk-speaker-card .bk-prose { font-size: 15.5px; text-align: left; margin-top: 8px; }
.bk-speaker-card h3 { font-size: 12px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-top: 14px; justify-self: start; }
.bk-speaker-sessions { display: grid; gap: 8px; width: 100%; text-align: left; }
.bk-speaker-sessions li { display: grid; grid-template-columns: 96px 1fr; gap: 10px; padding: 10px 14px; border-radius: 12px; background: var(--bg); font-size: 14.5px; }
.bk-speaker-sessions time { font-weight: 800; color: var(--brand-deep); font-variant-numeric: tabular-nums; }
.bk-speaker-sessions em { display: inline-block; margin-left: 8px; font-style: normal; font-size: 11px; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; padding: 2px 8px; border-radius: 999px; background: var(--brand-soft); color: var(--brand); vertical-align: 1px; }
.bk-speaker-sessions em.bk-now { background: var(--accent); color: var(--brand-deep); }
.bk-speaker-sessions li.is-now { box-shadow: inset 3px 0 0 var(--accent); }
.bk-speaker-days { display: grid; gap: 8px; width: 100%; text-align: left; }
.bk-speaker-day { border: 1px solid var(--line); border-radius: 14px; }
.bk-speaker-day summary { display: flex; align-items: center; gap: 10px; padding: 12px 14px; cursor: pointer; list-style: none; font-size: 14.5px; }
.bk-speaker-day summary::-webkit-details-marker { display: none; }
.bk-speaker-day summary strong { display: block; margin-right: auto; font-weight: 800; color: var(--brand-deep); }
.bk-speaker-day summary strong::first-letter { text-transform: uppercase; }
.bk-speaker-day summary time { color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.bk-count { min-width: 24px; height: 24px; padding: 0 7px; display: grid; place-items: center; border-radius: 999px; background: var(--brand-soft); color: var(--brand); font-size: 12px; font-weight: 800; }
.bk-speaker-day .bk-speaker-sessions { padding: 0 8px 8px; }

.bk-dialog.is-lightbox { width: 100vw; max-width: 100vw; height: 100svh; max-height: 100svh; border-radius: 0; background: transparent; box-shadow: none; overflow: hidden; }
.bk-dialog.is-lightbox::backdrop { background: rgb(8 16 26 / .94); }
.bk-lightbox { width: 100%; height: 100%; display: grid; grid-template-rows: 1fr auto; place-items: center; padding: 56px 12px 12px; gap: 10px; }
.bk-lightbox img { max-width: 100%; max-height: calc(100svh - 110px); object-fit: contain; border-radius: 10px; }
.bk-lightbox figcaption { color: rgb(255 255 255 / .7); font-size: 13px; font-weight: 600; }
.is-lightbox .bk-dialog-close, .bk-nav { background: rgb(255 255 255 / .14); color: #fff; }
.bk-nav { position: absolute; top: 50%; translate: 0 -50%; width: 48px; height: 48px; display: grid; place-items: center; border-radius: 50%; font-size: 18px; }
.bk-nav:hover, .is-lightbox .bk-dialog-close:hover { background: rgb(255 255 255 / .3); }
.bk-nav.is-prev { left: 12px; }
.bk-nav.is-next { right: 12px; }

/* Поділитися */
.bk-dialog.is-share { width: min(420px, calc(100vw - 24px)); }
.bk-share { display: grid; gap: 14px; padding: 30px 26px 26px; text-align: center; }
.bk-share h2 { font-size: 21px; font-weight: 800; }
.bk-qr { width: min(240px, 100%); aspect-ratio: 1; margin: 4px auto 0; padding: 6px; display: grid; place-items: center; border-radius: 18px; background: #fff; border: 1px solid var(--line); }
.bk-qr svg { width: 100%; height: 100%; display: block; }
.bk-qr:empty { background: linear-gradient(100deg, var(--bg) 30%, #fff 50%, var(--bg) 70%) 0 0 / 200% 100%; animation: bk-shimmer 1.2s linear infinite; }
@keyframes bk-shimmer { to { background-position: -200% 0; } }
.bk-qr-error, .bk-qr-hint { color: var(--muted); font-size: 13.5px; }
.bk-share-link { display: flex; gap: 8px; }
.bk-share-link input { flex: 1; min-width: 0; padding: 10px 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); font: inherit; font-size: 14px; text-overflow: ellipsis; }
.bk-share-actions { display: flex; gap: 8px; }
.bk-share-actions .bk-btn { flex: 1; justify-content: center; }
.bk-btn.is-light { background: var(--brand-soft); color: var(--brand-deep); }
.bk-btn.is-light:hover { background: color-mix(in srgb, var(--brand) 18%, #fff); }
.bk-btn:disabled { opacity: .5; cursor: default; }

/* ---------- Мобільні ---------- */

@media (max-width: 900px) {
  .bk-home { grid-template-columns: 1fr; }
  .bk-hero { min-height: clamp(320px, 52svh, 460px); }
  .bk-hub { grid-auto-rows: auto; }
  .bk-header { height: 56px; }
  .bk-brand img { height: 30px; }
}
@media (max-width: 560px) {
  .bk-material { flex-wrap: wrap; }
  .bk-material .bk-btn { width: 100%; justify-content: center; }
  .bk-speakers { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .bk-speaker { padding: 18px 10px; }
  .bk-avatar.is-large { width: 76px; height: 76px; }
  .bk-gallery { columns: 2; column-gap: 8px; }
  .bk-photo { margin-bottom: 8px; border-radius: 12px; }
  .bk-speaker-sessions li { grid-template-columns: 1fr; gap: 2px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .bk-partner-list.is-carousel { overflow-x: auto; mask-image: none; }
  .is-carousel .bk-partner[aria-hidden] { display: none; }
}

/* Часові пояси */
.bk-tz { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 6px; font-size: 14px; color: var(--ink); }
.bk-tz > span { opacity: .82; }
.bk-tz-toggle { display: inline-flex; padding: 3px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
.bk-tz-toggle button { padding: 5px 12px; border-radius: 9px; font-size: 13px; font-weight: 700; color: var(--muted); }
.bk-tz-toggle button[aria-pressed="true"] { background: var(--brand); color: #fff; }
/* Час у кількох поясах: кожен — «пігулка» з підписом поясу; основна виділена кольором події, додаткові — нейтральні */
.bk-when { display: inline-flex; align-items: baseline; gap: 6px; padding: 3px 11px; border-radius: 999px; background: var(--brand-soft); border: 1px solid color-mix(in srgb, var(--brand) 28%, transparent); }
.bk-when small { font-size: 11px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; color: var(--brand); }
.bk-when.is-extra { background: var(--bg); border-color: var(--line); }
.bk-session-top .bk-when.is-extra time { font-size: 13px; font-weight: 700; color: var(--ink); }
.bk-when.is-extra small { color: var(--muted); }

.bk-chip-zones > span { display: inline-flex; flex-wrap: wrap; align-items: baseline; column-gap: 6px; }
.bk-chip-zones strong { font-weight: 800; font-variant-numeric: tabular-nums; }
.bk-sep { opacity: .6; }