/* «Серебряные нити» — стили компонентов. Все цвета — через sn-токены; три версии переключаются атрибутом data-theme. */

.sn-page, [data-theme] { background: var(--sn-bg); color: var(--sn-text); font-family: var(--font-text); font-size: 16px; line-height: 26px; }
.sn-page *, .sn-page *::before, .sn-page *::after { box-sizing: border-box; }
.sn-page { -webkit-font-smoothing: antialiased; }
.sn-page h1, .sn-page h2, .sn-page h3, .sn-page p, .sn-page ul, .sn-page ol, .sn-page dl, .sn-page dd, .sn-page figure { margin: 0; padding: 0; }
.sn-page ul, .sn-page ol { list-style: none; }
.sn-page a { color: var(--sn-link); text-decoration-thickness: 1px; text-underline-offset: 3px; }
.sn-page a:hover { text-decoration-thickness: 2px; }
.sn-page :focus-visible { outline: 2px solid var(--sn-focus); outline-offset: 2px; border-radius: var(--radius-xs); }
.sn-container { max-width: var(--container); margin: 0 auto; padding: 0 24px; position: relative; }
.sn-visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.sn-sep { margin: 0 10px; color: var(--sn-thread); }
.sn-muted { color: var(--sn-text-muted); font-size: 14px; }

/* Типографика ролей */
.sn-eyebrow { font: 500 14px/20px var(--font-text); letter-spacing: .1em; text-transform: uppercase; color: var(--sn-text-muted); }
.sn-display { font: 300 72px/76px var(--font-display); letter-spacing: -.01em; color: var(--sn-heading); }
.sn-h2 { font: 400 36px/44px var(--font-display); color: var(--sn-heading); }
.sn-lead { font: 400 18px/28px var(--font-text); color: var(--sn-text); }
.sn-body { font: 400 16px/26px var(--font-text); }
.sn-accent-caps { font: 300 22px/28px var(--font-display); letter-spacing: .32em; text-transform: uppercase; color: var(--sn-heading); }
.sn-note { font-size: 14px; line-height: 20px; color: var(--sn-text-muted); }

/* Логотип: цвета из токенов версии */
.sn-logo { display: block; height: 56px; width: auto; }
.sn-logo__ink { fill: var(--sn-logo-ink); }
.sn-logo__steel { fill: var(--sn-logo-steel); }
.sn-logo__light { fill: var(--sn-logo-light); }

/* Нити */
.sn-t { fill: none; stroke: var(--sn-thread); stroke-width: var(--thread-hair); vector-effect: non-scaling-stroke; }
.sn-t--soft { stroke: var(--sn-thread-soft); }
.sn-node { fill: var(--sn-bg); stroke: var(--sn-thread); stroke-width: 1.5px; }
.sn-nodedot { display: inline-block; width: var(--node-size); height: var(--node-size); border-radius: 50%; background: var(--sn-bg); border: 1.5px solid var(--sn-thread); flex: none; }
.sn-divider { display: block; width: 100%; height: 16px; }
.sn-pattern { position: absolute; inset: 0; width: 100%; height: 100%; }
.sn-sphere { display: block; max-width: 100%; height: auto; }
.sn-draw .sn-t { stroke-dasharray: 1; stroke-dashoffset: 1; animation: sn-draw 1.3s cubic-bezier(.4,0,.2,1) forwards; animation-delay: calc(var(--i, 0) * 25ms); }
@keyframes sn-draw { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) { .sn-draw .sn-t { animation: none; stroke-dashoffset: 0; } .sn-btn, .sn-page a { transition: none !important; } }

/* Кнопки */
.sn-actions { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
.sn-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 52px; padding: 14px 24px; border-radius: var(--radius-sm); border: 1px solid transparent; font: 500 16px/20px var(--font-text); text-decoration: none; cursor: pointer; transition: background-color .15s, color .15s, border-color .15s; }
.sn-page a.sn-btn { text-decoration: none; }
.sn-btn--primary { background: var(--sn-brand); color: var(--sn-on-brand); }
.sn-page a.sn-btn--primary { color: var(--sn-on-brand); }
.sn-btn--primary:hover, .sn-btn--primary[data-state="hover"] { background: var(--sn-brand-hover); }
.sn-btn--primary:active, .sn-btn--primary[data-state="active"] { background: var(--sn-brand-hover); transform: translateY(1px); }
.sn-btn--secondary { background: transparent; color: var(--sn-link); border-color: var(--sn-border-control); }
.sn-page a.sn-btn--secondary { color: var(--sn-link); }
.sn-btn--secondary:hover, .sn-btn--secondary[data-state="hover"] { border-color: var(--sn-link); box-shadow: inset 0 0 0 1px var(--sn-link); }
.sn-btn--silver { background: var(--sn-silver-fill); color: var(--sn-on-silver); border-color: var(--sn-accent-silver); }
.sn-page a.sn-btn--silver { color: var(--sn-on-silver); }
.sn-btn--silver:hover, .sn-btn--silver[data-state="hover"] { border-color: var(--sn-on-silver); }
.sn-btn--link { background: none; min-height: 44px; padding: 12px 4px; color: var(--sn-link); }
.sn-page a.sn-btn--link { color: var(--sn-link); }
.sn-btn--link:hover span, .sn-btn--link[data-state="hover"] span { text-decoration: underline; text-underline-offset: 4px; }
.sn-btn[data-state="focus"] { outline: 2px solid var(--sn-focus); outline-offset: 2px; }
.sn-btn:disabled, .sn-btn[aria-disabled="true"] { background: var(--sn-surface-alt); color: var(--sn-text-muted); border-color: transparent; cursor: not-allowed; box-shadow: none; transform: none; }
.sn-btn--link:disabled { background: none; }
.sn-btn--block { width: 100%; }
.sn-btn .sn-ico { width: 18px; height: 18px; }
.sn-spinner { width: 16px; height: 16px; border-radius: 50%; border: 1.5px solid currentColor; border-right-color: transparent; animation: sn-spin .8s linear infinite; }
@keyframes sn-spin { to { transform: rotate(360deg); } }
.sn-ico { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.sn-iconbtn { width: 44px; height: 44px; display: inline-grid; place-items: center; background: none; border: 0; border-radius: var(--radius-sm); color: var(--sn-text); cursor: pointer; }
.sn-iconbtn:hover { background: var(--sn-surface); }

/* Бейдж статуса и теги */
.sn-badge { display: inline-flex; align-items: flex-start; gap: 10px; padding: 8px 14px; border: 1px solid var(--sn-line); border-radius: var(--radius-xs); font: 500 14px/20px var(--font-text); background: var(--sn-bg); max-width: 100%; }
.sn-badge__dot { width: 8px; height: 8px; border-radius: 50%; margin-top: 6px; flex: none; background: currentColor; }
.sn-badge--open { color: var(--sn-status-open); }
.sn-badge--closed { color: var(--sn-status-closed); }
.sn-badge--closed .sn-badge__dot { background: none; border: 1.5px solid currentColor; }
.sn-badge--soon { color: var(--sn-status-soon); }
.sn-tag { display: inline-flex; align-items: center; gap: 6px; padding: 2px 8px; border-radius: var(--radius-xs); border: 1px solid var(--sn-line); font: 500 13px/20px var(--font-text); color: var(--sn-text-muted); white-space: nowrap; }
.sn-tag .sn-ico { width: 14px; height: 14px; }

/* Строка события */
.sn-eventbar { background: var(--sn-surface-deep); color: var(--sn-on-deep); font-size: 14px; line-height: 20px; }
.sn-eventbar__in { display: flex; justify-content: space-between; align-items: center; min-height: 44px; gap: 16px; }
.sn-eventbar b { font-weight: 500; }
.sn-eventbar .sn-sep { color: var(--sn-on-deep-muted); }
.sn-page .sn-eventbar__link { color: var(--sn-on-deep); display: inline-flex; align-items: center; gap: 6px; font-weight: 500; text-decoration: none; white-space: nowrap; }
.sn-page .sn-eventbar__link:hover { text-decoration: underline; }
.sn-eventbar__link .sn-ico { width: 16px; height: 16px; }
.sn-eventbar :focus-visible { outline-color: var(--sn-on-deep); }

/* Шапка */
.sn-header { background: var(--sn-bg); border-bottom: 1px solid var(--sn-line); }
.sn-header__in { display: flex; align-items: center; gap: 32px; min-height: 88px; }
.sn-header__logo { flex: none; display: block; }
.sn-header__logo .sn-logo { height: 68px; }
.sn-nav ul, ul.sn-nav { display: flex; gap: 4px; align-items: center; }
.sn-nav { flex: 1; }
.sn-nav--aside { flex: none; border-left: 1px solid var(--sn-line); padding-left: 16px !important; }
.sn-page .sn-nav a { display: block; padding: 10px 10px; color: var(--sn-text); text-decoration: none; font: 500 15px/20px var(--font-text); border-radius: var(--radius-xs); position: relative; }
.sn-page .sn-nav a:hover { color: var(--sn-link); }
.sn-page .sn-nav a[aria-current="page"] { color: var(--sn-heading); }
.sn-page .sn-nav a[aria-current="page"]::after { content: ""; position: absolute; left: 10px; right: 10px; bottom: -24px; height: 2px; background: var(--sn-brand); }
.sn-page .sn-nav--aside a { color: var(--sn-text-muted); }
.sn-page a.sn-vk { display: inline-grid; place-items: center; width: 36px; height: 36px; padding: 0; border: 1px solid var(--sn-border-control); border-radius: var(--radius-sm); font: 600 12px/1 var(--font-text); letter-spacing: .04em; color: var(--sn-text); }
.sn-header--mobile .sn-header__in { min-height: 64px; justify-content: space-between; }
.sn-header--mobile .sn-logo { height: 40px; }

/* Первый экран главной */
.sn-hero { position: relative; overflow: hidden; padding: 96px 0 104px; }
.sn-hero__art { position: absolute; top: 40px; right: max(0px, calc((100% - var(--container)) / 2 - 40px)); width: 560px; }
.sn-hero__in { position: relative; }
.sn-hero__text { max-width: 760px; display: grid; gap: 24px; justify-items: start; }
.sn-hero__slogan { font: 400 22px/30px var(--font-text); color: var(--sn-text); }
.sn-hero__slogan span { display: block; font-size: 14px; line-height: 20px; color: var(--sn-text-muted); margin-top: 4px; }
.sn-hero__event { width: 100%; max-width: 560px; margin-top: 8px; }
.sn-hero__eventname { font: 500 22px/30px var(--font-text); color: var(--sn-heading); margin-top: 12px !important; }
.sn-hero__eventmeta { display: flex; align-items: center; gap: 8px; color: var(--sn-text-muted); font-size: 16px; margin-top: 4px !important; }
.sn-hero__eventmeta .sn-sep { margin: 0 2px; }

/* Полосы и сетки секций */
.sn-band { background: var(--sn-surface); padding: 96px 0; position: relative; }
[data-theme="silver"] .sn-band, [data-theme="silver"].sn-band { background-image: linear-gradient(180deg, var(--sn-surface) 0%, var(--sn-surface-alt) 100%); }
.sn-sechead { display: grid; grid-template-columns: auto 1fr; gap: 32px; align-items: center; margin-bottom: 48px; }
.sn-conf__grid { display: grid; grid-template-columns: 7fr 4fr; gap: 24px 96px; align-items: start; }
.sn-conf__grid > div:first-child { display: grid; gap: 20px; }
.sn-conf__cd { padding-top: 28px; }

/* Обратный отсчёт */
.sn-countdown { border: 1px solid var(--sn-line); border-radius: var(--radius-md); padding: 24px 28px; background: var(--sn-bg); }
.sn-countdown__label { font: 500 14px/20px var(--font-text); letter-spacing: .14em; text-transform: uppercase; color: var(--sn-text-muted); }
.sn-countdown__row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 16px 0 !important; }
.sn-countdown__row > div { border-top: 1px solid var(--sn-thread); padding-top: 12px; }
.sn-countdown__n { display: block; font: 300 52px/58px var(--font-display); color: var(--sn-heading); font-variant-numeric: tabular-nums; }
.sn-countdown__u { font-size: 14px; color: var(--sn-text-muted); }
.sn-countdown__foot { font-size: 14px; line-height: 20px; color: var(--sn-text-muted); }
.sn-countdown--compact .sn-countdown__n { font-size: 36px; line-height: 44px; }

/* Четыре дня — нить с узлами */
.sn-days { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 72px !important; position: relative; }
.sn-days::before { content: ""; position: absolute; left: 0; right: 0; top: 3px; height: 1.5px; background: var(--sn-thread); }
.sn-day { position: relative; display: grid; gap: 4px; padding-top: 24px; }
.sn-day .sn-nodedot { position: absolute; top: 0; left: 0; background: var(--sn-surface); }
.sn-day__date { font: 300 28px/36px var(--font-display); color: var(--sn-heading); }
.sn-day__date b { font-weight: 400; }
.sn-day__fmt { font: 500 13px/20px var(--font-text); letter-spacing: .1em; text-transform: uppercase; color: var(--sn-text-muted); }
.sn-day__what { font-size: 16px; line-height: 24px; }

/* Конкурс */
.sn-contest { padding: 96px 0; }
.sn-contest__grid { display: grid; grid-template-columns: 6fr 5fr; gap: 96px; align-items: start; }
.sn-contest__grid > div:first-child { display: grid; gap: 20px; justify-items: start; }
.sn-mini { display: flex; flex-wrap: wrap; gap: 8px 28px; color: var(--sn-text-muted); }
.sn-mini__n { font: 400 28px/36px var(--font-display); color: var(--sn-heading); margin-right: 4px; }
.sn-card { background: var(--sn-surface); border: 1px solid var(--sn-line); border-radius: var(--radius-md); padding: 32px; }
.sn-prices { width: 100%; border-collapse: collapse; }
.sn-prices caption { text-align: left; font: 500 18px/28px var(--font-text); color: var(--sn-heading); padding-bottom: 12px; }
.sn-prices caption span { display: block; font: 400 14px/20px var(--font-text); color: var(--sn-text-muted); }
.sn-prices th, .sn-prices td { text-align: left; padding: 12px 0; border-top: 1px solid var(--sn-line); font-weight: 400; vertical-align: top; }
.sn-prices td { text-align: right; font-weight: 500; white-space: nowrap; padding-left: 16px; }

/* Цифры проекта */
.sn-stats { padding: 96px 0; background: var(--sn-surface-alt); }
.sn-stats .sn-h2 { margin-bottom: 48px; }
.sn-stats__rail { position: relative; }
.sn-stats__line { position: absolute; left: 0; right: 0; top: 3px; height: 1.5px; background: var(--sn-thread); }
.sn-stats__list { display: grid; grid-template-columns: repeat(7, 1fr); gap: 24px; }
.sn-stat { display: grid; gap: 8px; align-content: start; position: relative; padding-top: 28px; }
.sn-stat .sn-nodedot { position: absolute; top: 0; left: 0; background: var(--sn-surface-alt); }
.sn-stat__n { font: 300 44px/52px var(--font-display); color: var(--sn-heading); white-space: nowrap; }
.sn-stat__l { font-size: 14px; line-height: 20px; color: var(--sn-text-muted); }
.sn-stats--compact .sn-stats__list { grid-template-columns: repeat(2, 1fr); gap: 32px 16px; }
.sn-stats--compact .sn-stats__line { display: none; }
.sn-stats--compact .sn-stat__n { font-size: 36px; line-height: 44px; }

/* Страница конференции */
.sn-chero { padding: 32px 0 96px; position: relative; }
.sn-crumbs ol { display: flex; gap: 8px; font-size: 14px; line-height: 20px; color: var(--sn-text-muted); margin-bottom: 56px !important; }
.sn-crumbs li + li::before { content: "/"; margin-right: 8px; color: var(--sn-thread); }
.sn-chero__grid { display: grid; grid-template-columns: 7fr 5fr; gap: 72px; align-items: start; }
.sn-chero__grid > div:first-child { display: grid; gap: 24px; justify-items: start; }
.sn-chero__theme { font-size: 22px; line-height: 32px; max-width: 640px; }
.sn-facts { display: grid; grid-template-columns: repeat(3, auto); gap: 32px; border-top: 1px solid var(--sn-line); padding-top: 24px !important; width: 100%; }
.sn-facts dt { display: flex; align-items: center; gap: 6px; font: 500 13px/20px var(--font-text); letter-spacing: .1em; text-transform: uppercase; color: var(--sn-text-muted); }
.sn-facts dt .sn-ico { width: 16px; height: 16px; }
.sn-facts dd { font: 500 18px/26px var(--font-text); margin-top: 6px !important; color: var(--sn-text); }
.sn-facts dd .sn-muted { display: block; font-weight: 400; }
.sn-chero__side { display: grid; gap: 20px; }
.sn-tagline { font: 500 16px/24px var(--font-text); color: var(--sn-link); }

/* Заглушка фото */
.sn-photo { position: relative; overflow: hidden; background: var(--sn-placeholder); border-radius: var(--radius-md); display: flex; align-items: flex-end; }
.sn-photo figcaption { position: relative; margin: 16px; padding: 4px 10px; background: var(--sn-bg); color: var(--sn-text-muted); font-size: 14px; line-height: 20px; border-radius: var(--radius-xs); }

/* Программа по дням */
.sn-tabs { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--sn-line); }
.sn-tab { display: grid; gap: 2px; text-align: left; padding: 16px 20px 18px; background: none; border: 0; border-bottom: 2px solid transparent; margin-bottom: -1px; cursor: pointer; color: var(--sn-text-muted); font-family: var(--font-text); }
.sn-tab__day { font: 500 13px/20px var(--font-text); letter-spacing: .1em; text-transform: uppercase; }
.sn-tab__date { font: 400 28px/36px var(--font-display); color: var(--sn-text); }
.sn-tab__fmt { font-size: 14px; line-height: 20px; }
.sn-tab:hover .sn-tab__date { color: var(--sn-link); }
.sn-tab[aria-selected="true"] { border-bottom-color: var(--sn-brand); background: var(--sn-bg); color: var(--sn-text); }
.sn-tab[aria-selected="true"] .sn-tab__date { color: var(--sn-heading); }
.sn-panel { background: var(--sn-bg); padding: 8px 32px 16px; border-radius: 0 0 var(--radius-md) var(--radius-md); }
.sn-panel__head { font: 500 14px/20px var(--font-text); color: var(--sn-text-muted); padding: 20px 0 8px !important; letter-spacing: .02em; }
.sn-prow { display: grid; grid-template-columns: 200px 1fr 320px; gap: 24px; padding: 20px 0; border-top: 1px solid var(--sn-line); align-items: baseline; }
.sn-prow__time { font: 400 18px/28px var(--font-display); font-variant-numeric: tabular-nums; color: var(--sn-heading); }
.sn-prow__title { font: 500 18px/28px var(--font-text); }
.sn-prow__meta { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.sn-prow__place { font-size: 14px; color: var(--sn-text-muted); }
.sn-program .sn-note { margin-top: 20px !important; }

/* Подвал */
.sn-footer { background: var(--sn-surface-deep); color: var(--sn-on-deep); padding: 0 0 40px; --sn-logo-ink: var(--sn-on-deep); --sn-logo-steel: var(--sn-on-deep); --sn-logo-light: var(--sn-on-deep-muted); }
.sn-footer__event { border-bottom: 1px solid var(--sn-on-deep-muted); padding: 20px 0 !important; font-size: 14px; color: var(--sn-on-deep); }
.sn-page .sn-footer a { color: var(--sn-on-deep); }
.sn-footer__grid { display: grid; grid-template-columns: 2fr repeat(4, 1fr); gap: 24px; padding: 48px 0 !important; }
.sn-footer__brand .sn-logo { height: 56px; margin-bottom: 20px; }
.sn-footer__slogan { font: 400 18px/28px var(--font-text); }
.sn-footer__tag { color: var(--sn-on-deep-muted); margin-top: 4px !important; }
.sn-footer__h { font: 500 13px/20px var(--font-text); letter-spacing: .1em; text-transform: uppercase; color: var(--sn-on-deep-muted); margin-bottom: 12px !important; }
.sn-footer li { padding: 4px 0; font-size: 15px; }
.sn-page .sn-footer li a { text-decoration: none; }
.sn-page .sn-footer li a:hover { text-decoration: underline; }
.sn-footer__bottom { display: flex; justify-content: space-between; gap: 24px; border-top: 1px solid var(--sn-on-deep-muted); padding-top: 20px !important; font-size: 14px; }
.sn-footer__muted { color: var(--sn-on-deep-muted); }
.sn-footer :focus-visible { outline-color: var(--sn-on-deep); }

/* Мобильная версия (макет 390px) */
.sn-page--mobile .sn-container { padding: 0 16px; }
.sn-page--mobile .sn-eventbar { font-size: 13px; }
.sn-page--mobile .sn-hero { padding: 40px 0 56px; }
.sn-page--mobile .sn-hero__art { width: 220px; top: 20px; right: -44px; }
.sn-page--mobile .sn-hero__text { gap: 20px; }
.sn-page--mobile .sn-display { font-size: 44px; line-height: 48px; }
.sn-page--mobile .sn-hero__text { padding-top: 196px; }
.sn-page--mobile .sn-eyebrow { font-size: 12px; line-height: 18px; }
.sn-page--mobile .sn-hero__slogan { font-size: 18px; line-height: 26px; }
.sn-page--mobile .sn-hero__eventname { font-size: 18px; line-height: 26px; }
.sn-page--mobile .sn-hero__eventmeta { flex-wrap: wrap; font-size: 15px; }
.sn-page--mobile .sn-actions { width: 100%; }
.sn-page--mobile .sn-actions .sn-btn { width: 100%; }
.sn-page--mobile .sn-band, .sn-page--mobile .sn-stats { padding: 56px 0; }
.sn-page--mobile .sn-h2 { font-size: 28px; line-height: 36px; }
.sn-page--mobile .sn-conf__grid { grid-template-columns: 1fr; gap: 32px; }
.sn-page--mobile .sn-conf__cd { padding-top: 0; }
.sn-page--mobile .sn-countdown { padding: 20px; }
.sn-page--mobile .sn-countdown__n { font-size: 36px; line-height: 44px; }
.sn-page--mobile .sn-days { grid-template-columns: 1fr; gap: 0; margin-top: 40px !important; padding-left: 28px; }
.sn-page--mobile .sn-days::before { left: 3px; right: auto; top: 6px; bottom: 6px; width: 1.5px; height: auto; }
.sn-page--mobile .sn-day { padding: 0 0 24px; }
.sn-page--mobile .sn-day .sn-nodedot { left: -28px; top: 10px; }