:root {
  --bg: #06070d;
  --bg-2: #0b0d18;
  --panel: #0e1120;
  --panel-2: #121628;
  --line: #1f2540;
  --line-2: #2b3357;
  --text: #dbe2f4;
  --muted: #7a84a6;
  --cyan: #00e5ff;
  --magenta: #ff2e88;
  --yellow: #f7d046;
  --green: #35f2a1;
  --red: #ff4d5e;
  --violet: #8b7bff;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
  --sans: 'Noto Sans KR', system-ui, sans-serif;
  --r: 10px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--sans); font-size: 15px; line-height: 1.55;
  -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
.grid-bg {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(255,46,136,.13), transparent 60%),
    radial-gradient(800px 500px at -10% 20%, rgba(0,229,255,.10), transparent 60%),
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px) 0 0 / 40px 40px,
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px) 0 0 / 40px 40px,
    var(--bg);
}
a { color: var(--cyan); text-decoration: none; }
b, strong { font-weight: 700; }
.kr { font-family: var(--sans); font-weight: 500; color: var(--magenta); font-size: .7em; letter-spacing: .04em; margin-left: .5em; opacity: .9; }

/* ---------- topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; gap: 24px;
  padding: 12px clamp(16px, 4vw, 48px);
  background: rgba(6,7,13,.78); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); }
.brand-mark { width: 22px; height: 22px; border: 2px solid var(--cyan); border-radius: 4px; position: relative; box-shadow: 0 0 12px rgba(0,229,255,.35); }
.brand-mark::after { content: ''; position: absolute; left: 50%; top: 4px; bottom: 3px; width: 2px; background: var(--magenta); transform: translateX(-50%); }
.brand-text { font-family: var(--mono); font-weight: 700; letter-spacing: .12em; font-size: 14px; }
.brand-text b { color: var(--cyan); margin-left: 2px; }
.brand-kr { font-size: 12px; color: var(--muted); }
.nav { display: flex; gap: 22px; margin-left: auto; }
.nav a { color: var(--muted); font-family: var(--mono); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; }
.nav a:hover { color: var(--text); }
.topbar-meta { font-family: var(--mono); font-size: 11px; color: var(--muted); border: 1px solid var(--line-2); padding: 3px 8px; border-radius: 4px; letter-spacing: .1em; }

main { max-width: 1280px; margin: 0 auto; padding: 0 clamp(16px, 4vw, 48px); }

/* ---------- hero ---------- */
.hero-bg { position: absolute; top: 0; left: 0; right: 0; height: min(860px, 100vh); z-index: -1; overflow: hidden; pointer-events: none; }
.hero-bg img { position: absolute; right: 0; top: 0; width: min(1500px, 100%); height: 100%; object-fit: cover; object-position: 70% 40%; opacity: .9;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 45%), linear-gradient(180deg, #000 55%, transparent 100%);
  -webkit-mask-composite: source-in; mask-image: linear-gradient(90deg, transparent 0%, #000 45%), linear-gradient(180deg, #000 55%, transparent 100%); mask-composite: intersect; }
.hero-bg::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, var(--bg) 0%, rgba(6,7,13,.75) 38%, rgba(6,7,13,.15) 70%, rgba(6,7,13,.35) 100%); }
.hero { padding: 96px 0 56px; min-height: min(640px, 82vh); display: flex; flex-direction: column; justify-content: center; }
.hero h1 { text-shadow: 0 2px 30px rgba(6,7,13,.6); }
.eyebrow { font-family: var(--mono); font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); display: flex; align-items: center; gap: 10px; margin: 0 0 18px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 10px var(--green); }
.hero h1 { font-weight: 900; font-size: clamp(40px, 7vw, 84px); line-height: .95; letter-spacing: -.02em; margin: 0; text-transform: uppercase; }
.hero-kr { display: block; font-size: .32em; font-weight: 700; letter-spacing: .08em; margin-top: 14px;
  background: linear-gradient(90deg, var(--cyan), var(--magenta)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lede { max-width: 720px; color: #b3bcd8; font-size: 16.5px; margin: 22px 0 26px; }
.chips { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.chips li { font-family: var(--mono); font-size: 12.5px; border: 1px solid var(--line-2); background: rgba(14,17,32,.7); padding: 6px 12px 6px 6px; border-radius: 6px; display: flex; gap: 10px; align-items: center; }
.chips span { background: var(--panel-2); color: var(--cyan); padding: 1px 7px; border-radius: 4px; font-size: 11px; letter-spacing: .1em; }

/* ---------- notice ---------- */
.notice { display: flex; gap: 0; border: 1px solid rgba(247,208,70,.35); border-radius: var(--r); overflow: hidden; background: linear-gradient(90deg, rgba(247,208,70,.08), rgba(247,208,70,.02)); margin: 8px 0 8px; }
.notice-tag { font-family: var(--mono); font-size: 11px; letter-spacing: .16em; color: #111; background: var(--yellow); padding: 14px 14px; writing-mode: horizontal-tb; display: flex; align-items: center; white-space: nowrap; font-weight: 700; }
.notice-body { padding: 13px 18px; color: #e6dcb2; font-size: 14.5px; }
.notice-body strong { color: var(--yellow); }

/* ---------- sections ---------- */
.section { padding: 56px 0 8px; }
.section-head { display: flex; align-items: baseline; gap: 16px; margin-bottom: 22px; border-bottom: 1px solid var(--line); padding-bottom: 14px; }
.section-idx { font-family: var(--mono); color: var(--magenta); font-size: 13px; letter-spacing: .12em; }
.section-head h2 { margin: 0; font-size: clamp(24px, 3vw, 32px); font-weight: 900; text-transform: uppercase; letter-spacing: .01em; }

/* ---------- tabs ---------- */
.tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 18px; }
.tab { position: relative; text-align: left; font: inherit; color: var(--text); background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  padding: 0; overflow: hidden; cursor: pointer; min-height: 190px; display: flex; align-items: flex-end; transition: border-color .2s, box-shadow .2s, transform .2s; }
.tab-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .45; filter: saturate(.7); transition: opacity .3s, transform .5s, filter .3s; }
.tab::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(6,7,13,0) 20%, rgba(6,7,13,.92) 100%); }
.tab-body { position: relative; z-index: 1; padding: 16px 18px; display: flex; flex-direction: column; gap: 6px; align-items: flex-start; }
.tab-title { font-weight: 900; font-size: 20px; text-transform: uppercase; letter-spacing: .01em; display: flex; align-items: baseline; gap: 10px; }
.tab-kr { font-size: 12px; color: var(--magenta); font-weight: 500; }
.tab-sub { font: 400 11.5px var(--mono); color: #9aa4c4; letter-spacing: .04em; }
.tab:hover { border-color: var(--line-2); transform: translateY(-2px); }
.tab:hover .tab-img { opacity: .6; }
.tab.is-active { border-color: var(--cyan); box-shadow: 0 0 0 1px var(--cyan), 0 12px 40px rgba(0,229,255,.12); }
.tab.is-active .tab-img { opacity: .8; filter: saturate(1); transform: scale(1.03); }
.tab:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }
.badge { font: 500 10.5px var(--mono); letter-spacing: .08em; text-transform: uppercase; padding: 2px 7px; border-radius: 4px; backdrop-filter: blur(4px); }
.badge.ok { background: rgba(53,242,161,.14); color: var(--green); border: 1px solid rgba(53,242,161,.4); }
.badge.warn { background: rgba(247,208,70,.12); color: var(--yellow); border: 1px solid rgba(247,208,70,.4); }

.sim-brief { color: #aab3cf; margin: 0 0 16px; max-width: 900px; font-size: 14.5px; }
.sim-brief b { color: var(--text); }

/* ---------- simulator layout ---------- */
.sim { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 16px; }
.viewport, .controls, .card { background: linear-gradient(180deg, var(--panel), var(--bg-2)); border: 1px solid var(--line); border-radius: var(--r); }
.viewport { display: flex; flex-direction: column; min-width: 0; overflow: hidden; }
.vp-head, .vp-foot { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 14px; font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em; color: var(--muted); }
.vp-head { border-bottom: 1px solid var(--line); }
.vp-foot { border-top: 1px solid var(--line); flex-wrap: wrap; }
.vp-foot b { color: var(--text); margin-left: 6px; font-weight: 500; }
.vp-state { color: var(--cyan); border: 1px solid rgba(0,229,255,.4); padding: 2px 8px; border-radius: 4px; background: rgba(0,229,255,.06); }
.vp-state.alarm { color: var(--yellow); border-color: rgba(247,208,70,.5); background: rgba(247,208,70,.08); }
.viewport svg { width: 100%; height: auto; display: block; background:
  linear-gradient(rgba(0,229,255,.035) 1px, transparent 1px) 0 0 / 20px 20px,
  linear-gradient(90deg, rgba(0,229,255,.035) 1px, transparent 1px) 0 0 / 20px 20px; }

.controls { padding: 6px 16px 16px; display: flex; flex-direction: column; }
.ctl-group { padding: 12px 0; border-bottom: 1px dashed var(--line); }
.ctl-group:last-child { border-bottom: 0; }
.ctl-label { font: 500 10.5px var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }

.btn { font: 700 14px var(--sans); color: var(--text); background: var(--panel-2); border: 1px solid var(--line-2); border-radius: 8px; padding: 10px 12px; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; gap: 2px; transition: transform .08s, box-shadow .15s, border-color .15s; user-select: none; -webkit-user-select: none; touch-action: manipulation; width: 100%; }
.btn small { font: 400 10px var(--mono); color: var(--muted); letter-spacing: .08em; }
.btn:hover { border-color: var(--muted); }
.btn:active, .btn.is-pressed { transform: translateY(1px); }
.btn.go { border-color: rgba(53,242,161,.45); color: var(--green); }
.btn.go.is-pressed, .btn.go:hover { box-shadow: 0 0 18px rgba(53,242,161,.25); }
.btn.alt { border-color: rgba(0,229,255,.45); color: var(--cyan); }
.btn.alt.is-pressed, .btn.alt:hover { box-shadow: 0 0 18px rgba(0,229,255,.25); }
.btn.stop { border-color: rgba(255,77,94,.5); color: var(--red); }
.btn.stop.is-pressed, .btn.stop:hover { box-shadow: 0 0 18px rgba(255,77,94,.28); }
.btn.ghost { font-weight: 500; font-size: 13px; color: #b9c1dc; padding: 8px 10px; margin-top: 8px; }
.btn-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.btn-row.three { grid-template-columns: repeat(3, 1fr); }
.btn-row .btn.ghost { margin-top: 0; }
.ctl-group .btn-row + .btn, .bits + .btn-row { margin-top: 10px; }

.switch-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.sw { display: flex; align-items: center; gap: 10px; cursor: pointer; background: var(--panel-2); border: 1px solid var(--line-2); border-radius: 8px; padding: 8px 10px; }
.sw input { position: absolute; opacity: 0; pointer-events: none; }
.sw-ui { width: 30px; height: 16px; border-radius: 10px; background: #252b47; position: relative; flex: none; transition: .15s; }
.sw-ui::after { content: ''; position: absolute; top: 2px; left: 2px; width: 12px; height: 12px; border-radius: 50%; background: var(--muted); transition: .15s; }
.sw input:checked + .sw-ui { background: rgba(255,46,136,.3); }
.sw input:checked + .sw-ui::after { left: 16px; background: var(--magenta); box-shadow: 0 0 8px var(--magenta); }
.sw input:focus-visible + .sw-ui { outline: 2px solid var(--cyan); outline-offset: 2px; }
.sw-txt { font: 400 11px var(--mono); color: var(--muted); display: flex; flex-direction: column; line-height: 1.3; }
.sw-txt b { color: var(--text); font-size: 12px; }
.sw-txt small { color: var(--cyan); font-size: 10.5px; }

.seg { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line-2); border-radius: 8px; overflow: hidden; }
.seg button { font: 500 12px var(--mono); background: var(--panel-2); color: var(--muted); border: 0; padding: 7px; cursor: pointer; }
.seg button + button { border-left: 1px solid var(--line-2); }
.seg button.is-on { background: rgba(0,229,255,.12); color: var(--cyan); }

.watch { display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; margin: 0; font-family: var(--mono); font-size: 12px; }
.watch dt { color: var(--muted); }
.watch dd { margin: 0; color: var(--text); text-align: right; }
.watch dd.on { color: var(--green); }

.bits { display: grid; grid-template-columns: repeat(8, 1fr); gap: 4px; }
.bit { font: 500 10px var(--mono); text-align: center; border: 1px solid var(--line-2); border-radius: 5px; padding: 4px 0 3px; color: var(--muted); background: var(--panel-2); }
.bit b { display: block; font-size: 13px; color: #3b4466; }
.bit.on { border-color: rgba(255,46,136,.6); color: var(--magenta); }
.bit.on b { color: var(--magenta); text-shadow: 0 0 8px rgba(255,46,136,.6); }

/* ---------- bottom cards ---------- */
.sim-bottom { display: grid; grid-template-columns: 1.15fr 1fr 1fr; gap: 16px; margin-top: 16px; }
.card { padding: 14px 16px; min-width: 0; }
.card-head { font: 700 13px var(--sans); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 12px; display: flex; align-items: center; }
.card-head .kr { font-size: 11px; }
.mini { margin-left: auto; font: 500 10.5px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); background: transparent; border: 1px solid var(--line-2); padding: 3px 8px; border-radius: 4px; cursor: pointer; }
.mini:hover { color: var(--text); }

.states { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 5px; }
.states li { font: 400 12px var(--mono); display: flex; gap: 8px; align-items: center; padding: 5px 8px; border: 1px solid var(--line); border-radius: 6px; color: var(--muted); transition: .12s; }
.states li span { color: #4a5478; min-width: 18px; }
.states li.carry { border-left: 2px solid rgba(247,208,70,.5); }
.states li.alarm { border-left: 2px solid rgba(255,77,94,.5); }
.states li.on { color: var(--bg); background: var(--cyan); border-color: var(--cyan); box-shadow: 0 0 16px rgba(0,229,255,.35); }
.states li.on span { color: var(--bg); }
.states li.on.alarm { background: var(--yellow); border-color: var(--yellow); }

.io { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 14px; }
.io-col h4 { margin: 0 0 6px; font: 500 10.5px var(--mono); letter-spacing: .16em; color: var(--muted); }
.led { display: flex; align-items: center; gap: 8px; font: 400 11.5px var(--mono); color: var(--muted); padding: 2px 0; }
.led i { width: 9px; height: 9px; border-radius: 50%; background: #1d2238; border: 1px solid #2d3555; flex: none; }
.led em { font-style: normal; color: #4f5a80; min-width: 30px; }
.led.on { color: var(--text); }
.led.on i { background: var(--green); border-color: var(--green); box-shadow: 0 0 8px var(--green); }
.led.out.on i { background: var(--magenta); border-color: var(--magenta); box-shadow: 0 0 8px var(--magenta); }

.log-card { display: flex; flex-direction: column; }
.log { list-style: none; margin: 0; padding: 0; font: 400 11.5px/1.6 var(--mono); color: #9aa4c4; height: 250px; overflow-y: auto; scrollbar-width: thin; scrollbar-color: var(--line-2) transparent; }
.log li { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; border-bottom: 1px solid rgba(31,37,64,.6); }
.log time { color: #4f5a80; margin-right: 8px; }
.log .t-ok { color: var(--green); } .log .t-warn { color: var(--yellow); } .log .t-hot { color: var(--magenta); }

.footnote { font: 400 11.5px var(--mono); color: var(--muted); margin: 12px 0 0; }

/* ---------- pruebas ---------- */
.lab { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 16px; margin-bottom: 16px; }
.lab-photo { margin: 0; padding: 0; overflow: hidden; }
.lab-photo img { width: 100%; height: 100%; max-height: 420px; object-fit: cover; display: block; }
.lab-photo figcaption { font-size: 13px; color: var(--muted); padding: 10px 14px; border-top: 1px solid var(--line); }
.checks { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; font-size: 14px; color: #c3cbe4; }
.checks li { display: flex; gap: 12px; align-items: flex-start; }
.checks i { flex: none; width: 18px; height: 18px; margin-top: 2px; border-radius: 50%; border: 1px solid var(--green); box-shadow: 0 0 10px rgba(53,242,161,.35); position: relative; }
.checks i::after { content: ''; position: absolute; left: 5px; top: 2px; width: 5px; height: 9px; border: solid var(--green); border-width: 0 2px 2px 0; transform: rotate(45deg); }
.checks b { color: var(--text); }
.lab-checks .muted { color: var(--muted); font-size: 13px; margin: 18px 0 0; }
.videos { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
.vcard { margin: 0; background: linear-gradient(180deg, var(--panel), var(--bg-2)); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; display: flex; flex-direction: column; transition: border-color .2s; }
.vcard:hover { border-color: var(--line-2); }
.vcard video { width: 100%; aspect-ratio: 478 / 850; object-fit: cover; display: block; background: #000; }
.vcard figcaption { padding: 12px 12px 14px; display: flex; flex-direction: column; gap: 6px; align-items: flex-start; font-size: 13px; color: #aab3cf; line-height: 1.45; flex: 1; }
.vcard figcaption b { font: 500 12px var(--mono); color: var(--cyan); letter-spacing: .04em; }
.vcard .badge { margin-top: auto; }
.vtag { font-weight: 900; text-transform: uppercase; color: var(--text); font-size: 15px; letter-spacing: .02em; }

.gx { margin-top: 28px; }
.gx-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 14px; }
.gx-head h3 { margin: 0; font-size: 18px; font-weight: 900; text-transform: uppercase; letter-spacing: .02em; }
.gx-head p { margin: 0; color: var(--muted); font-size: 13.5px; }
.gx-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.gx-item { font: inherit; color: inherit; text-align: left; padding: 0; cursor: zoom-in; background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; display: flex; flex-direction: column; transition: border-color .2s, transform .2s; }
.gx-item:hover { border-color: var(--cyan); transform: translateY(-2px); }
.gx-item:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
.gx-item img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; object-position: top left; display: block; background: #fff; }
.gx-item span { padding: 9px 11px 11px; font-size: 12.5px; color: #aab3cf; line-height: 1.4; display: flex; gap: 8px; }
.gx-item em { font: 500 11px var(--mono); color: var(--magenta); font-style: normal; padding-top: 1px; }
.lightbox { border: 1px solid var(--line-2); border-radius: 12px; background: var(--panel); padding: 0; max-width: min(1400px, 96vw); width: 96vw; color: var(--text); }
.lightbox::backdrop { background: rgba(3,4,8,.85); backdrop-filter: blur(4px); }
.lightbox figure { margin: 0; }
.lightbox img { width: 100%; max-height: 80vh; object-fit: contain; display: block; background: #fff; }
.lightbox figcaption { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 14px; font-size: 14px; flex-wrap: wrap; }
.lb-nav { display: flex; align-items: center; gap: 8px; font: 500 12px var(--mono); color: var(--muted); }
.lb-nav .mini { margin-left: 0; }

/* ---------- MEF ---------- */
.mef-grid { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 16px; }
.fig { margin: 0; padding: 12px; }
.fig img { width: 100%; height: auto; display: block; border-radius: 6px; background: #fff; }
.fig figcaption { font-size: 13px; color: var(--muted); margin-top: 10px; }
.strategy p { font-size: 14px; color: #b3bcd8; margin: 0 0 12px; }
.strategy .muted { color: var(--muted); font-size: 13px; margin: 12px 0 0; }
.mini-table { width: 100%; border-collapse: collapse; font: 400 12px var(--mono); }
.mini-table th { text-align: left; color: var(--muted); font-weight: 500; border-bottom: 1px solid var(--line-2); padding: 6px 4px; font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; }
.mini-table td { padding: 7px 4px; border-bottom: 1px solid var(--line); }
.mini-table td:last-child { color: var(--magenta); text-align: center; font-weight: 700; }
.formula { font: 500 15px var(--mono); color: var(--cyan); background: var(--panel-2); border: 1px solid var(--line-2); border-radius: 8px; padding: 12px 14px; margin: 0; }

/* ---------- code ---------- */
.code-card { padding: 0; overflow: hidden; }
.code-head { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--line); }
.file { font: 500 12px var(--mono); color: var(--cyan); }
.code-actions { margin-left: auto; display: flex; gap: 8px; }
.code-actions .mini { margin-left: 0; }
.code { margin: 0; padding: 16px; max-height: 560px; overflow: auto; font: 400 12.5px/1.6 var(--mono); color: #c9d2ec; tab-size: 4; scrollbar-width: thin; scrollbar-color: var(--line-2) transparent; }
.code .k { color: var(--magenta); font-weight: 500; }
.code .c { color: #5d6890; font-style: italic; }
.code .n { color: var(--yellow); }
.code .d { color: var(--green); }

.footer { max-width: 1280px; margin: 64px auto 0; padding: 22px clamp(16px, 4vw, 48px) 40px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 16px; font: 400 12px var(--mono); color: var(--muted); flex-wrap: wrap; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .lab { grid-template-columns: 1fr; }
  .gx-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .videos { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .sim { grid-template-columns: 1fr; }
  .sim-bottom { grid-template-columns: 1fr 1fr; }
  .log-card { grid-column: 1 / -1; }
  .mef-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .nav, .topbar-meta { display: none; }
  .hero { padding-top: 40px; }
  .sim-bottom { grid-template-columns: 1fr; }
  .notice { flex-direction: column; }
  .notice-tag { padding: 6px 12px; }
  .btn-row.three { grid-template-columns: 1fr 1fr 1fr; }
  .switch-row { grid-template-columns: 1fr; }
  .tabs { grid-template-columns: 1fr; }
  .videos { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gx-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tab { min-height: 150px; }
  .hero { min-height: 0; padding: 56px 0 36px; }
  .hero-bg { height: 560px; }
  .hero-bg img { width: 100%; object-position: 65% 40%; opacity: .55; }
  .states { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }