/* System Test — extends /static/css/site.css (tokens, buttons, panels, fonts). */
.st-top { position: sticky; top: 0; z-index: 50; display: flex; align-items: center; gap: 14px; padding: 8px var(--gutter); background: #0b0a1aee; backdrop-filter: blur(6px); border-bottom: 3px solid #000; box-shadow: 0 2px 0 var(--line-2); }
.st-title { font: 10px var(--pixel); color: #000; background: var(--cyan); padding: 5px 7px; border: 2px solid #000; }
.st-spacer { flex: 1; }
.st-main { max-width: var(--maxw); }
.st-hero { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 28px; align-items: start; margin: 8px 0 22px; }
@media (max-width: 900px) { .st-hero { grid-template-columns: 1fr; } }
.st-hero h1 { font-size: clamp(1.7rem, 4vw, 2.6rem); }
.bootlog {
  margin: 0; min-height: 260px; max-height: 340px; overflow: auto; background: #020208; color: #9dff8a;
  font: 18px/1.25 var(--led); border: 3px solid #000; box-shadow: var(--shadow), inset 0 0 0 2px #1a3d16, inset 0 0 40px #39ff1414;
  border-radius: 6px; padding: 14px 16px; white-space: pre-wrap; overflow-wrap: anywhere; text-shadow: 0 0 6px #39ff1466;
}
.bootlog .ok { color: var(--neon); }
.bootlog .warn { color: var(--yellow); }
.bootlog .bad { color: var(--red); }
.bootlog .dim { color: #4f8a45; }
.st-progress { margin: 0 0 18px; }
.st-progress-label { display: flex; justify-content: space-between; font-weight: 600; margin-bottom: 6px; }
.st-progress-track { height: 16px; background: #050414; border: 2px solid #000; box-shadow: 3px 3px 0 #000; border-radius: 3px; overflow: hidden; }
.st-progress-track span { display: block; height: 100%; width: 0; background: repeating-linear-gradient(90deg, var(--neon) 0 10px, #2bd40f 10px 12px); transition: width .25s; }
.st-stage { margin-bottom: 18px; }
.st-stage-head { display: flex; justify-content: space-between; font: 10px var(--pixel); color: var(--cyan); margin-bottom: 8px; }
.st-fps { color: var(--neon); }
.st-stage-box { position: relative; width: 100%; max-width: 960px; aspect-ratio: 16 / 9; background: #000; border: 3px solid #000; box-shadow: var(--shadow), 0 0 0 1px var(--line-2); border-radius: 6px; overflow: hidden; }
.st-stage-box canvas { width: 100% !important; height: 100% !important; display: block; }
.st-score { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 24px; align-items: center; box-shadow: var(--shadow), inset 0 0 0 2px var(--yellow); }
@media (max-width: 700px) { .st-score { grid-template-columns: 1fr; } }
.score-big { text-align: center; padding: 6px 18px; }
.score-num { font: 72px/1 var(--led); color: var(--neon); text-shadow: 0 0 16px #39ff1488; }
.score-tier { font: 12px/1.5 var(--pixel); color: var(--yellow); margin-top: 6px; }
.score-emoji { font-size: 48px; }
.subscores { display: grid; gap: 8px; }
.subscore { display: grid; grid-template-columns: 140px minmax(0, 1fr) 64px; gap: 10px; align-items: center; font-size: .92rem; }
.subscore .bl-track { height: 12px; }
.subscore .bl-val { font-weight: 700; }
.score-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.share-link { margin-top: 10px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.share-link input { max-width: 420px; }
.st-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 380px), 1fr)); gap: 0 18px; align-items: start; }
.st-panel h2 { display: flex; align-items: center; gap: 8px; }
.st-panel .panel-title button { margin-left: auto; }
.kv { width: 100%; border-collapse: collapse; font-size: .9rem; }
.kv th { text-align: left; font-weight: 600; color: var(--muted); padding: 5px 8px 5px 0; vertical-align: top; width: 42%; }
.kv td { padding: 5px 0; overflow-wrap: anywhere; }
.kv tr + tr th, .kv tr + tr td { border-top: 1px dashed var(--line); }
.kv .st { display: inline-block; width: 1.3em; }
.kv .ok { color: var(--neon); }
.kv .bad { color: var(--red); }
.kv .warn { color: var(--yellow); }
.kv .note { display: block; color: var(--dim); font-size: .8rem; }
.feat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(165px, 1fr)); gap: 4px 10px; font-size: .86rem; }
.feat-grid span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.feat-grid .ok::before { content: '✔ '; color: var(--neon); }
.feat-grid .bad { color: var(--dim); }
.feat-grid .bad::before { content: '✖ '; color: var(--red); }
.feat-group { margin: 10px 0 4px; font: 9px var(--pixel); color: var(--pink); }
.lat-table td.num { font-variant-numeric: tabular-nums; text-align: right; }
.lat-bar { display: inline-block; height: 8px; background: var(--series-1); border-radius: 0 3px 3px 0; vertical-align: middle; }
.pad-view { display: grid; gap: 10px; }
.pad { background: var(--bg-3); border: 1px solid var(--line-2); border-radius: 4px; padding: 8px; }
.pad-buttons { display: flex; flex-wrap: wrap; gap: 3px; margin: 6px 0; }
.pad-buttons i { width: 22px; height: 22px; display: grid; place-items: center; font: 10px var(--sans); font-style: normal; background: #050414; border: 1px solid var(--line-2); border-radius: 3px; }
.pad-buttons i.on { background: var(--neon); color: #000; }
.pad-axes { display: grid; grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); gap: 6px; font-size: .78rem; }
.pad-axes span { display: block; height: 8px; background: #050414; border: 1px solid var(--line-2); position: relative; }
.pad-axes span b { position: absolute; top: -1px; width: 4px; height: 8px; background: var(--yellow); margin-left: -2px; }
.saved-banner { margin-bottom: 18px; }
.st-about ul { margin: 0; padding-left: 1.2em; color: var(--muted); }
.st-about li { margin-bottom: 4px; }