/* Break The Root — Acre-inspired visual direction
   Palette: deep plum, aubergine, muted lavender, white and fine neutral rules. */
:root {
  --plum-950: #200622;
  --plum-900: #2b0a30;
  --plum-800: #401447;
  --plum-700: #54245b;
  --lavender: #c6a8cc;
  --lavender-light: #e5d9e8;
  --ink: #211b28;
  --muted: #716875;
  --line: #e6e0e7;
  --paper: #fff;
  --soft: #f8f5f8;
  --max: 1380px;
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --plum-950: #140d17;
  --plum-900: #201525;
  --plum-800: #38183d;
  --plum-700: #51285a;
  --lavender: #c6a2d1;
  --lavender-light: #38293e;
  --ink: #f4edf6;
  --muted: #b9aebe;
  --line: #3a2d40;
  --paper: #140d17;
  --soft: #201525;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Manrope", Arial, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.shell { width: min(var(--max), calc(100% - 72px)); margin-inline: auto; }
.site-header { height: 78px; display: flex; align-items: center; gap: 28px; width: min(1280px, calc(100% - 72px)); margin: auto; }
.brand { display: inline-flex; align-items: center; gap: 11px; flex-shrink: 0; font-size: 17px; font-weight: 800; letter-spacing: -.7px; }
.brand-mark { width: 30px; height: 30px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 3px; transform: skewY(-12deg); }
.brand-mark i { display: block; background: var(--plum-800); }
.brand-mark i:nth-child(2), .brand-mark i:nth-child(3) { background: #a884b1; }
.nav-links { display: flex; align-items: center; justify-content: center; gap: clamp(14px, 1.8vw, 26px); margin-inline: auto; }
.nav-links a, .login-link { font-size: 12px; font-weight: 600; color: #403645; white-space: nowrap; }
.nav-actions { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }
.theme-toggle { width: 38px; height: 38px; flex: 0 0 38px; display: grid; place-items: center; padding: 0; border: 1px solid #d8d1da; border-radius: 8px; color: var(--plum-800); background: transparent; cursor: pointer; transition: background .2s, border-color .2s, color .2s; }
.theme-toggle:hover { background: var(--soft); border-color: #a884b1; }
.theme-toggle:focus-visible { outline: 2px solid #a884b1; outline-offset: 3px; }
.theme-icon { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.theme-icon-sun { display: none; }
.social-links { display: flex; align-items: center; gap: 12px; }
.nav-actions { min-width: 0; flex-wrap: wrap; justify-content: flex-end; }
.social-links .icon-link { display: grid; place-items: center; width: 22px; height: 24px; color: #716875; font-size: 0; }
.social-links .icon-link svg { width: 19px; height: 19px; fill: currentColor; }
.social-links .icon-link:hover { color: var(--plum-800); }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 52px; padding: 6px 7px 6px 22px; border: 1px solid transparent; border-radius: 9px; font-size: 12px; font-weight: 700; transition: transform .2s, background .2s, border-color .2s; }
.button:hover { transform: translateY(-2px); }
.button-small { min-height: 42px; padding: 0 17px; gap: 15px; }
.button-outline { border-color: #4c3151; color: var(--plum-900); }
.button-outline:hover { background: var(--soft); }
.button-light { background: #fff; color: var(--plum-950); }
.button-light .arrow-box { background: var(--plum-900); color: #fff; }
.arrow-box { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 7px; font-size: 17px; }
.button-ghost { color: #fff; border-color: #704d76; padding-left: 20px; }
.button-ghost > span { font-size: 18px; color: var(--lavender); margin: 0 7px; }
.button-dark { color: white; background: var(--plum-900); }
.button-dark .arrow-box { background: #57345d; }
.menu-toggle { display: none; }
.hero { width: 100%; max-width: none; margin-inline: 0; color: white; overflow: hidden; position: relative; border-radius: 0; background: linear-gradient(112deg, #26072a 0%, #320b38 48%, #4b1d50 100%); }
.hero-grid { width: min(var(--max), calc(100% - 72px)); margin-inline: auto; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); min-height: 480px; align-items: center; }
.hero-copy { padding: 72px 5%; max-width: none; position: relative; z-index: 1; }
.hero-art { display: block; width: 100%; height: 440px; max-height: 440px; aspect-ratio: 1.42; object-fit: cover; object-position: center; align-self: center; mix-blend-mode: lighten; mask-image: linear-gradient(90deg, transparent 0%, #000 24%); }
.eyebrow, .section-kicker { font: 10px "DM Mono", monospace; letter-spacing: 1.4px; text-transform: uppercase; }
.eyebrow { color: #a77bb1; margin: 0 0 22px; }
.eyebrow.light { color: #d3b8d8; }
h1, h2, h3, p { margin-top: 0; }
.hero h1 { max-width: 780px; font-size: clamp(42px, 5vw, 68px); font-weight: 500; line-height: 1.08; letter-spacing: -2px; margin: 0 0 25px; }
h1 em, h2 em { color: #c9a9d0; font-style: normal; }
.hero-accent { color: #c9a9d0; }
.hero-description { max-width: 520px; color: #fff; font-size: 14px; line-height: 1.85; margin-bottom: 28px; }
.hero-buttons { display: flex; gap: 12px; flex-wrap: wrap; }
.section { padding-top: 112px; padding-bottom: 112px; }
.section-kicker { display: flex; justify-content: space-between; gap: 20px; color: #8a788d; border-bottom: 1px solid var(--line); padding-bottom: 17px; }
h2 { font-size: clamp(34px, 4.2vw, 56px); line-height: 1.12; letter-spacing: -2.4px; font-weight: 500; margin-bottom: 0; }
.labs-section { padding-top: 112px; }
.catalog-page .labs-section { padding-top: 52px; }
.arena-title { margin: 0 0 25px; }
.arena-filters { display: flex; align-items: center; gap: 12px; margin-bottom: 30px; }
.filter-control select, .search-control input { height: 42px; border: 1px solid #d8d1da; border-radius: 6px; background: #fff; color: #403645; font: 12px "Manrope", sans-serif; }
.filter-control select { min-width: 138px; padding: 0 34px 0 14px; }
.search-control { position: relative; display: block; }
.search-control input { width: min(260px, 34vw); padding: 0 14px 0 38px; }
.search-control input::placeholder { color: #918995; }
.search-control svg { position: absolute; z-index: 1; width: 15px; height: 15px; left: 13px; top: 13px; fill: none; stroke: #8b8490; stroke-width: 1.7; stroke-linecap: round; }
.filter-control select:focus-visible, .search-control input:focus-visible { outline: 2px solid #a884b1; outline-offset: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.filter-empty { margin: 30px 0; color: var(--muted); text-align: center; font-size: 13px; }
.lab-card[hidden] { display: none; }
.lab-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.lab-card { --category-accent: #a98dbd; position: relative; min-height: 224px; border: 1px solid #4a3550; border-radius: 9px; overflow: hidden; color: #fff; background: #29132f; transition: transform .2s, box-shadow .2s; }
.lab-card-link { position: absolute; z-index: 2; inset: 0; display: block; border-radius: inherit; }
.lab-card-link:focus-visible { outline: 2px solid var(--category-accent); outline-offset: -3px; }
.lab-card[data-categories~="linux"] { --category-accent: #8eb7c2; }
.lab-card[data-categories~="protocols"] { --category-accent: #8eafa4; }
.lab-card[data-categories~="authentication"] { --category-accent: #b58ba6; }
.lab-card:hover { transform: translateY(-3px); box-shadow: 0 12px 28px rgba(40,12,45,.1); }
.lab-card::before { content: ""; position: absolute; z-index: 3; inset: 0; pointer-events: none; opacity: 0; }
.lab-card::before { background: linear-gradient(var(--category-accent),var(--category-accent)) left top / 14px 1px, linear-gradient(var(--category-accent),var(--category-accent)) left top / 1px 14px, linear-gradient(var(--category-accent),var(--category-accent)) right top / 14px 1px, linear-gradient(var(--category-accent),var(--category-accent)) right top / 1px 14px, linear-gradient(var(--category-accent),var(--category-accent)) left bottom / 14px 1px, linear-gradient(var(--category-accent),var(--category-accent)) left bottom / 1px 14px, linear-gradient(var(--category-accent),var(--category-accent)) right bottom / 14px 1px, linear-gradient(var(--category-accent),var(--category-accent)) right bottom / 1px 14px; background-repeat: no-repeat; transition: opacity .2s; }
.lab-card:hover::before, .lab-card:focus-within::before { opacity: .9; }
.lab-card.is-solved { border-top: 2px solid #62a997; }
.lab-card.is-solved .lab-info::after { content: "PWNED"; position: absolute; z-index: 2; top: 14px; left: 14px; color: #438c7a; font: 8px "DM Mono", monospace; letter-spacing: .8px; }
.lab-card.is-locked .room-art { filter: saturate(.55); }
.lab-card.is-locked .lab-lock { position: absolute; z-index: 2; right: 3px; bottom: 3px; width: 20px; height: 20px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.3); border-radius: 50%; color: #f0e8f2; background: rgba(28,14,33,.78); transition: transform .3s ease, opacity .3s ease; }
.lab-lock svg { width: 9px; height: 11px; fill: none; stroke: currentColor; stroke-width: 1.25; stroke-linecap: round; stroke-linejoin: round; }
.lab-card.is-locked:hover .lab-lock { transform: rotate(-12deg) translateY(-1px); opacity: .55; }
.lab-visual { --art-accent: #d5afe1; --art-angle: -24deg; position: absolute; z-index: 1; top: 14px; right: 14px; width: 64px; height: 64px; isolation: isolate; overflow: hidden; border: 1px solid color-mix(in srgb, var(--category-accent) 58%, transparent); border-radius: 50%; background-color: #28112f; transition: filter .25s ease; }
.lab-card[data-categories~="linux"] .lab-visual, .lab-card[data-categories~="protocols"] .lab-visual, .lab-card[data-categories~="authentication"] .lab-visual, .lab-card[data-categories~="web"] .lab-visual { --art-accent: var(--category-accent); }
.room-art::before { transition: transform .7s ease; }
.lab-card:hover .room-art::before { transform: rotate(calc(var(--art-angle) + 5deg)); }
.lab-visual::after { content: ""; position: absolute; z-index: 1; inset: 0; border-radius: inherit; background: radial-gradient(circle at 34% 28%, rgba(255,255,255,.12), transparent 54%), rgba(18,12,22,.12); pointer-events: none; }
.room-art { position: absolute; inset: 0; overflow: hidden; opacity: .8; pointer-events: none; }
.room-art::before { content: ""; position: absolute; width: 68%; aspect-ratio: 1; top: -36%; left: 43%; border: 1px solid rgba(255,255,255,.34); border-radius: 50%; transform: rotate(var(--art-angle)); box-shadow: 0 0 0 16px rgba(255,255,255,.045), 0 0 0 38px rgba(255,255,255,.035), inset 0 0 30px rgba(255,255,255,.08); }
.room-art::after { content: ""; position: absolute; inset: 12% 0 0; opacity: .42; background: repeating-linear-gradient(0deg, transparent 0 22px, rgba(255,255,255,.14) 23px, transparent 24px); mask-image: linear-gradient(90deg, transparent, #000 80%); }
.room-art i { position: absolute; display: block; }
.room-art i:nth-child(1) { width: 29%; height: 42%; left: 15%; top: 29%; border: 1px solid rgba(255,255,255,.4); border-radius: 48% 52% 46% 54%; transform: rotate(var(--art-angle)); box-shadow: 0 0 0 11px rgba(255,255,255,.035); }
.room-art i:nth-child(2) { width: 12px; height: 12px; left: 74%; top: 68%; border-radius: 50%; background: var(--art-accent); box-shadow: 0 0 22px var(--art-accent); }
.room-art i:nth-child(3) { width: 37%; height: 1px; left: 14%; top: 77%; background: rgba(255,255,255,.6); box-shadow: 0 7px 0 rgba(255,255,255,.24), 0 14px 0 rgba(255,255,255,.14); transform: rotate(-8deg); }
.lab-visual h3 { display: none; }
.room-art-image { width: 100%; height: 100%; display: block; object-fit: cover; opacity: .86; }
.btn-signout { border: 0; background: transparent; color: var(--muted); font: 600 12px "Manrope", sans-serif; cursor: pointer; }
.btn-signout:hover { color: var(--ink); }
.avatar { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--plum-800); color: #fff; font-size: 12px; font-weight: 800; }
.room-inkwell { --art-accent: #e4c1ef; --art-angle: -36deg; background-image: radial-gradient(ellipse at 76% 18%, #865293, transparent 44%), linear-gradient(135deg, #492452, #1d0b26); }
.room-sensorhub { --art-accent: #c4b6e8; --art-angle: 18deg; background-image: radial-gradient(circle at 75% 38%, #78659a, transparent 30%), repeating-linear-gradient(90deg, transparent 0 25px, rgba(255,255,255,.075) 26px, transparent 27px), linear-gradient(145deg, #32173f, #160d28); }
.room-intro-injection { --art-accent: #f0b4df; --art-angle: -12deg; background-image: repeating-linear-gradient(132deg, transparent 0 19px, rgba(240,180,223,.12) 20px, transparent 22px), radial-gradient(ellipse at 20% 30%, #874d80, transparent 48%), linear-gradient(145deg, #351138, #1d0d2d); }
.room-sql-basic { --art-accent: #dfb9f2; --art-angle: 42deg; background-image: linear-gradient(rgba(221,185,242,.09) 1px, transparent 1px), linear-gradient(90deg, rgba(221,185,242,.09) 1px, transparent 1px), radial-gradient(circle at 74% 23%, #73508c, transparent 40%), linear-gradient(135deg, #30123d, #190d28); background-size: 24px 24px, 24px 24px, auto, auto; }
.room-sql-deeper { --art-accent: #d6c2f4; --art-angle: 68deg; background-image: radial-gradient(ellipse at 74% 20%, #775d9f, transparent 40%), repeating-linear-gradient(150deg, transparent 0 30px, rgba(255,255,255,.09) 31px, transparent 33px), linear-gradient(130deg, #291034, #171022); }
.room-sql-blind { --art-accent: #c9b9f3; --art-angle: -58deg; background-image: radial-gradient(circle, rgba(224,205,255,.27) 1px, transparent 2px), radial-gradient(ellipse at 80% 20%, #604b8d, transparent 42%), linear-gradient(140deg, #21102f, #160d24); background-size: 22px 22px, auto, auto; }
.room-sql-second-order { --art-accent: #e5b7e8; --art-angle: 30deg; background-image: repeating-radial-gradient(ellipse at 76% 38%, transparent 0 18px, rgba(229,183,232,.16) 19px 20px, transparent 21px 35px), linear-gradient(130deg, #3b1646, #1b0e2d); }
.room-meridian { --art-accent: #efc9df; --art-angle: -22deg; background-image: repeating-linear-gradient(90deg, transparent 0 31px, rgba(239,201,223,.14) 32px, transparent 34px), radial-gradient(ellipse at 23% 25%, #765071, transparent 46%), linear-gradient(145deg, #321332, #1c0d28); }
.room-password-reset { --art-accent: #e7bce9; --art-angle: 9deg; background-image: radial-gradient(circle at 72% 42%, transparent 0 25px, rgba(231,188,233,.28) 26px 27px, transparent 29px), radial-gradient(ellipse at 72% 42%, #775083, transparent 43%), linear-gradient(140deg, #34133e, #1a0d29); }
.room-session-fixation { --art-accent: #d6b5ed; --art-angle: 52deg; background-image: linear-gradient(90deg, transparent 49.5%, rgba(255,255,255,.14) 50%, transparent 50.5%), linear-gradient(0deg, transparent 49.5%, rgba(255,255,255,.14) 50%, transparent 50.5%), radial-gradient(circle at 50% 50%, #6c4b83, transparent 46%), linear-gradient(145deg, #291139, #180d27); }
.room-remember-me { --art-accent: #edc3e9; --art-angle: -44deg; background-image: radial-gradient(circle, rgba(237,195,233,.24) 2px, transparent 3px), radial-gradient(ellipse at 25% 32%, #754a79, transparent 48%), linear-gradient(135deg, #38163c, #190e2a); background-size: 28px 28px, auto, auto; }
.room-jwt { --art-accent: #c8c0f2; --art-angle: 76deg; background-image: repeating-linear-gradient(135deg, transparent 0 27px, rgba(200,192,242,.13) 28px, transparent 30px), radial-gradient(ellipse at 75% 22%, #685994, transparent 45%), linear-gradient(130deg, #281338, #170d2a); }
.room-oauth { --art-accent: #e3b9ef; --art-angle: 22deg; background-image: radial-gradient(circle at 38% 44%, transparent 0 44px, rgba(227,185,239,.23) 45px 46px, transparent 48px), radial-gradient(circle at 63% 44%, transparent 0 44px, rgba(227,185,239,.23) 45px 46px, transparent 48px), linear-gradient(140deg, #3e1b4b, #190d28); }
.room-autharium { --art-accent: #edbfe8; --art-angle: -72deg; background-image: repeating-linear-gradient(0deg, transparent 0 35px, rgba(237,191,232,.12) 36px, transparent 38px), repeating-linear-gradient(90deg, transparent 0 42px, rgba(237,191,232,.11) 43px, transparent 45px), radial-gradient(ellipse at 76% 20%, #754c85, transparent 44%), linear-gradient(135deg, #33123d, #170d27); }
.lab-info { min-height: 224px; padding: 14px 14px 12px; display: grid; grid-template-rows: auto 1fr auto auto; grid-template-areas: "title" "summary" "meta" "footer"; gap: 6px; }
.lab-meta { display: flex; justify-content: space-between; gap: 8px; align-items: center; color: #c5b7c9; font: 8px "DM Mono", monospace; letter-spacing: .35px; }
.lab-meta > span:first-child { color: #fff; }
.lab-info .lab-meta { grid-area: meta; }
.difficulty { --signal: #8d6d99; display: inline-flex; align-items: center; gap: 5px; padding: 0; border: 0; color: #e5dce8; font: 8px "DM Mono", monospace; white-space: nowrap; }
.difficulty::after { content: ""; display: inline-block; width: 18px; height: 11px; background-repeat: no-repeat; }
.difficulty.easy::after { background-image: linear-gradient(to top, var(--signal) 34%, transparent 34%), linear-gradient(to top, rgba(117,102,122,.2) 67%, transparent 67%), linear-gradient(to top, rgba(117,102,122,.2) 100%, transparent 100%); background-size: 4px 100%, 4px 100%, 4px 100%; background-position: left bottom, center bottom, right bottom; }
.difficulty.medium::after { background-image: linear-gradient(to top, var(--signal) 34%, transparent 34%), linear-gradient(to top, var(--signal) 67%, transparent 67%), linear-gradient(to top, rgba(117,102,122,.2) 100%, transparent 100%); background-size: 4px 100%, 4px 100%, 4px 100%; background-position: left bottom, center bottom, right bottom; }
.difficulty.hard::after { background-image: linear-gradient(to top, var(--signal) 34%, transparent 34%), linear-gradient(to top, var(--signal) 67%, transparent 67%), linear-gradient(to top, var(--signal) 100%, transparent 100%); background-size: 4px 100%, 4px 100%, 4px 100%; background-position: left bottom, center bottom, right bottom; }
.difficulty.easy { --signal: #6fb77b; color: #6fb77b; }
.difficulty.medium { --signal: #e09a4b; color: #e09a4b; }
.difficulty.hard { --signal: #df6468; color: #df6468; }
.lab-info h3 { grid-area: title; max-width: calc(100% - 65px); margin: 2px 0 0; font-size: 17px; font-weight: 700; line-height: 1.3; }
.lab-info p { grid-area: summary; max-width: calc(100% - 65px); align-self: start; color: #fff; font-size: 14px; line-height: 1.5; margin: 0; }
.lab-footer { grid-area: footer; display: flex; justify-content: space-between; align-items: center; padding-top: 7px; border-top: 1px solid rgba(255,255,255,.18); font-size: 10px; font-weight: 700; }
.lab-access.free { color: #a8d5b5; }
.lab-access.paid { color: #e7c28e; }
.lab-footer a { width: 26px; height: 26px; display: grid; place-items: center; border: 1px solid #e4d9e7; border-radius: 50%; color: var(--plum-800); font-size: 14px; }
.join-section { color: #fff; background: radial-gradient(ellipse at 50% 0, rgba(135,83,148,.24), transparent 56%), linear-gradient(135deg, #240927, #35103d 58%, #28102f); text-align: center; padding: 78px 0 70px; }
.join-content { display: flex; flex-direction: column; align-items: center; }
.join-eyebrow { color: #c6a8cc; font: 10px "DM Mono", monospace; letter-spacing: 1.2px; margin-bottom: 16px; }
.join-content h2 { font-size: clamp(36px, 4.2vw, 54px); line-height: 1.12; }
.join-description { max-width: 620px; margin: 20px 0 25px; color: #d1bfd5; font-size: 13px; line-height: 1.8; }
.join-actions { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; }
.join-secondary { color: #fff; border-color: rgba(255,255,255,.32); padding-left: 20px; }
.join-secondary > span { color: var(--lavender); font-size: 18px; margin: 0 7px; }
.join-benefits { display: flex; justify-content: center; gap: 27px; flex-wrap: wrap; padding: 0; margin: 27px 0 0; list-style: none; color: #d1bfd5; font-size: 11px; }
.join-benefits li::before { content: "✓"; color: #c6a8cc; margin-right: 8px; }
.site-footer { color: #eee5f0; background: #200622; }
.footer-main { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 36px; padding-top: 50px; padding-bottom: 44px; }
.footer-brand { color: #fff; }
.footer-brand .brand-mark i { background: #c6a8cc; }
.footer-brand .brand-mark i:nth-child(2), .footer-brand .brand-mark i:nth-child(3) { background: #8c6794; }
.footer-about p { max-width: 250px; margin: 17px 0 0; color: #bdaec1; font-size: 11px; line-height: 1.8; }
.footer-column { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.footer-column h3 { margin: 2px 0 4px; color: #fff; font-size: 14px; }
.footer-column a { color: #c5b7c8; font-size: 11px; }
.footer-column a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid rgba(255,255,255,.15); padding-top: 17px; padding-bottom: 20px; color: #a997ad; font: 9px "DM Mono", monospace; }
:root[data-theme="dark"] body { background: var(--paper); color: var(--ink); }
:root[data-theme="dark"] .brand-mark i { background: var(--lavender); }
:root[data-theme="dark"] .brand-mark i:nth-child(2),
:root[data-theme="dark"] .brand-mark i:nth-child(3) { background: #8c6794; }
:root[data-theme="dark"] .nav-links a,
:root[data-theme="dark"] .login-link { color: var(--ink); }
:root[data-theme="dark"] .social-links .icon-link { color: var(--muted); }
:root[data-theme="dark"] .social-links .icon-link:hover { color: var(--lavender); }
:root[data-theme="dark"] .button-outline { border-color: #684b70; color: var(--ink); }
:root[data-theme="dark"] .button-outline:hover { background: var(--soft); }
:root[data-theme="dark"] .theme-toggle { color: var(--lavender); border-color: #4b3a51; }
:root[data-theme="dark"] .theme-icon-moon { display: none; }
:root[data-theme="dark"] .theme-icon-sun { display: block; }
:root[data-theme="dark"] .filter-control select,
:root[data-theme="dark"] .search-control input { color: var(--ink); background: var(--soft); border-color: var(--line); }
:root[data-theme="dark"] .search-control input::placeholder { color: var(--muted); }
:root[data-theme="dark"] .search-control svg { stroke: var(--muted); }
:root[data-theme="dark"] .filter-control select:focus-visible,
:root[data-theme="dark"] .search-control input:focus-visible { outline-color: var(--lavender); }
:root[data-theme="dark"] .lab-card { background: var(--soft); border-color: var(--line); }
:root[data-theme="dark"] .lab-meta { color: var(--muted); }
:root[data-theme="dark"] .lab-footer { border-color: var(--line); }
:root[data-theme="dark"] .lab-access.free { color: #a8d5b5; }
:root[data-theme="dark"] .lab-access.paid { color: #e7c28e; }
:root[data-theme="dark"] .lab-footer a { color: var(--lavender); border-color: #60476a; }
:root[data-theme="dark"] .filter-empty { color: var(--muted); }
@media (max-width: 1050px) {
  .site-header { gap: 16px; }.nav-links { gap: 12px; }.nav-links a { font-size: 10px; }.nav-actions { gap: 10px; }.social-links { gap: 8px; }.social-links a { font-size: 10px; }
  .hero-copy { padding-left: 7%; padding-right: 7%; }
}
@media (max-width: 780px) {
  .shell, .site-header { width: min(100% - 36px, var(--max)); }
  .site-header { height: 70px; justify-content: space-between; gap: 14px; }.menu-toggle { display: block; border: 0; background: transparent; font-size: 24px; color: var(--plum-900); cursor: pointer; margin-left: auto; }
  .nav-links { display: none; position: absolute; top: 65px; left: 18px; right: 18px; z-index: 10; padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: white; box-shadow: 0 15px 40px rgba(35,5,40,.12); }
  .nav-links.open { display: grid; gap: 0; }.nav-links a { padding: 13px 5px; border-bottom: 1px solid var(--line); font-size: 13px; }.nav-links a:last-child { border: 0; }
  .nav-actions { display: flex; width: 100%; justify-content: flex-end; order: 4; }
  .social-links { display: flex; }
  :root[data-theme="dark"] .menu-toggle { color: var(--ink); }
  :root[data-theme="dark"] .nav-links { background: var(--soft); border-color: var(--line); box-shadow: 0 15px 40px rgba(0,0,0,.35); }
  :root[data-theme="dark"] .nav-links a { color: var(--ink); border-color: var(--line); }
  .hero { width: 100%; margin-inline: 0; border-radius: 0; }.hero-grid { width: min(100% - 36px, var(--max)); grid-template-columns: 1fr; min-height: 0; }
  .hero-copy { padding: 58px 18px 20px; }.hero h1 { font-size: clamp(42px, 10vw, 62px); letter-spacing: -1.5px; }.hero-description { font-size: 13px; }
  .hero-art { width: min(100%, 520px); height: min(300px, 56vw); max-height: 300px; justify-self: center; margin: -4px auto 12px; }
  .section { padding-top: 76px; padding-bottom: 76px; }.section-kicker { font-size: 8px; }
  h2 { letter-spacing: -1.5px; }
  .arena-filters { flex-wrap: wrap; }.search-control { flex: 1 1 220px; }.search-control input { width: 100%; }
  .lab-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }.lab-card, .lab-info { min-height: 224px; }
  .join-section { padding: 62px 0 56px; }.join-content h2 { font-size: 38px; }.join-benefits { gap: 12px 20px; }
  .footer-main { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 24px; }.footer-about { grid-column: 1 / -1; }
  .footer-bottom { flex-wrap: wrap; }
}
@media (max-width: 420px) {
  .brand { font-size: 15px; }.brand-mark { width: 26px; height: 26px; }
  .lab-grid { grid-template-columns: 1fr; }
  .join-content h2 { font-size: 34px; }.join-actions { width: 100%; }.join-actions .button { width: 100%; max-width: 310px; }.join-benefits { flex-direction: column; align-items: center; gap: 10px; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 26px 18px; }.footer-column h3 { font-size: 13px; }.footer-bottom { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  .lab-card, .lab-visual, .lab-lock, .room-art::before { transition: none; }
}