.chaos-lab {
    --ca: #0c86c8; --ca2: #c73d95; --ca3: #b26a10;      /* 主色 / 次色 / 强调 */
    --ok: #0f9d63; --hot: #c73d95; --warn: #b26a10;     /* 判定色：有序 / 混沌 / 提醒 */
    --ca-border: rgba(12, 134, 200, .28);
    position: relative;
    color: var(--text-primary);
}
[data-theme="dark"] .chaos-lab {
    --ca: #4de7ff; --ca2: #ff4db8; --ca3: #ffb35c;
    --ok: #3ddc97; --hot: #ff4db8; --warn: #ffb35c;
    --ca-border: rgba(77, 231, 255, .22);
}
html { scroll-behavior: smooth; }

/* ---------- 毛玻璃面板（背景/边框由 site.css 通用毛玻璃列表提供） ---------- */
.lab-panel, .lab-controls, .lab-map-frame {
    box-shadow: var(--glass-shadow), var(--glass-inset-highlight);
}

/* ---------- 序章 ---------- */
.lab-hero { position: relative; overflow: hidden; padding: 2.5rem 0 3rem; }
.lab-hero::before {
    content: ""; position: absolute; inset: -20% 0 0; pointer-events: none;
    background: radial-gradient(52% 46% at 50% 8%, color-mix(in srgb, var(--ca) 14%, transparent), transparent 72%);
}
.lab-hero-inner { position: relative; }
.lab-kicker { color: var(--ca); font: 600 .72rem/1.6 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .22em; margin-bottom: .8rem; }
.lab-title { font-size: clamp(2rem, 5vw, 3.4rem); font-weight: 800; line-height: 1.15; letter-spacing: -.02em; margin-bottom: 1rem; }
.lab-title b { color: var(--ca); }
.lab-hero-inner > p { color: var(--text-secondary); font-size: 1.05rem; line-height: 2; margin-bottom: 1.5rem; max-width: 42em; }
.lab-specs { display: flex; flex-wrap: wrap; gap: .55rem; }
.lab-chip {
    padding: .3rem .75rem; border-radius: 999px;
    font: .72rem ui-monospace, SFMono-Regular, Consolas, monospace;
    color: var(--text-secondary); border: 1px dashed color-mix(in srgb, var(--ca) 38%, transparent);
}
.lab-scroll { display: inline-block; margin-top: 2.2rem; color: var(--text-secondary); font: .75rem ui-monospace, monospace; letter-spacing: .14em; text-decoration: none; }
.lab-scroll span { margin-left: .7rem; color: var(--ca); font-size: 1.4rem; }
.lab-scroll:hover { color: var(--text-primary); }

/* ---------- 实验台导航 ---------- */
.lab-stations {
    position: sticky; top: 68px; z-index: 60; padding: .45rem 0;
    background: color-mix(in srgb, var(--glass-bg) 90%, transparent);
    -webkit-backdrop-filter: blur(14px) saturate(160%); backdrop-filter: blur(14px) saturate(160%);
    border-top: 1px solid var(--glass-border); border-bottom: 1px solid var(--glass-border);
}
.lab-stations-inner { display: flex; gap: .35rem; overflow-x: auto; scrollbar-width: none; }
.lab-stations-inner::-webkit-scrollbar { display: none; }
.lab-station-link {
    display: inline-flex; align-items: center; gap: .45rem; padding: .42rem .95rem; border-radius: 999px;
    color: var(--text-secondary); text-decoration: none; font-size: .85rem; white-space: nowrap; transition: color .2s, background .2s;
}
.lab-station-link span { font: .66rem ui-monospace, monospace; color: var(--ca); opacity: .85; }
.lab-station-link:hover { color: var(--text-primary); background: var(--glass-bg-hover); }
.lab-station-link.is-active {
    color: var(--text-primary); background: color-mix(in srgb, var(--ca) 14%, transparent);
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--ca) 45%, transparent);
}

/* ---------- 实验台区间 ---------- */
.lab-section { position: relative; padding: 4.5rem 0; scroll-margin-top: 130px; }
.lab-section:not(:first-of-type)::before {
    content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
    width: min(1120px, calc(100% - 2rem)); height: 1px;
    background: color-mix(in srgb, var(--text-secondary) 18%, transparent);
}
.lab-head { margin-bottom: 1.9rem; }
.lab-eyebrow { color: var(--ca); font: 600 .7rem/1.6 ui-monospace, monospace; letter-spacing: .2em; }
.lab-head h2 { margin: .4rem 0 .5rem; font-size: clamp(1.65rem, 3.6vw, 2.5rem); font-weight: 800; letter-spacing: -.01em; display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; }
.lab-head-chip {
    font: .68rem ui-monospace, monospace; letter-spacing: .1em; font-weight: 400; padding: .22rem .6rem; border-radius: 999px;
    color: var(--ca); border: 1px solid color-mix(in srgb, var(--ca) 40%, transparent); background: color-mix(in srgb, var(--ca) 8%, transparent);
}
.lab-sub { color: var(--text-secondary); font-size: .95rem; line-height: 1.9; }
.lab-sub strong { color: var(--ca2); font-family: ui-monospace, monospace; }

/* ---------- 玻璃面板 ---------- */
.lab-panel {
    position: relative; padding: 1.15rem; border-radius: 16px;
    transition: background .3s ease, border-color .3s ease, box-shadow .3s ease, transform .3s ease;
}
.lab-panel:hover { background: var(--glass-bg-hover); border-color: var(--glass-border-hover); box-shadow: var(--glass-shadow-hover), var(--glass-inset-highlight); }
.lab-panel h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: .55rem; }
.lab-panel h3::before { content: "· "; color: var(--ca); }
.lab-panel p { color: var(--text-secondary); font-size: .88rem; line-height: 1.9; margin: 0; }
.lab-panel-head { display: flex; align-items: center; gap: .7rem; margin-bottom: .8rem; min-height: 1.4rem; }
.lab-panel-title { font: .7rem ui-monospace, monospace; letter-spacing: .14em; color: var(--text-secondary); }
.lab-instrument { margin-left: auto; font: .72rem ui-monospace, monospace; color: var(--ca); }
.lab-panel-foot { display: flex; align-items: center; gap: 1.2rem; margin-top: .7rem; flex-wrap: wrap; }
.lab-panel-foot-note { margin-left: auto; color: var(--text-secondary); font-size: .78rem; }
.lab-note { margin-top: .7rem; font-size: .8rem !important; }
.lab-legend { display: inline-flex; align-items: center; gap: .4rem; font: .68rem ui-monospace, monospace; color: var(--text-secondary); }
.lab-legend i { width: 8px; height: 8px; border-radius: 50%; background: currentColor; box-shadow: 0 0 8px currentColor; }
.lg-cyan { color: #4de7ff; }
.lg-pink { color: #ff4db8; }

.lab-badge {
    display: inline-flex; align-items: center; padding: .13rem .55rem; border-radius: 999px;
    font: .66rem ui-monospace, monospace; letter-spacing: .08em; border: 1px solid;
    color: var(--text-secondary); border-color: var(--glass-border); background: var(--glass-bg);
}
.lab-badge-ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); background: color-mix(in srgb, var(--ok) 10%, transparent); }
.lab-badge-hot { color: var(--hot); border-color: color-mix(in srgb, var(--hot) 40%, transparent); background: color-mix(in srgb, var(--hot) 10%, transparent); }
.lab-badge-warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); background: color-mix(in srgb, var(--warn) 10%, transparent); }
.lab-badge-ca { color: var(--ca); border-color: color-mix(in srgb, var(--ca) 40%, transparent); background: color-mix(in srgb, var(--ca) 10%, transparent); }

/* ---------- 模拟屏 ---------- */
.lab-screen {
    position: relative; overflow: hidden; border-radius: 12px;
    border: 1px solid var(--ca-border);
    background: radial-gradient(120% 100% at 50% 0%, #0d1a33 0%, #070d1c 62%, #050a15 100%);
    box-shadow: inset 0 0 46px rgba(77, 231, 255, .05);
}
.lab-screen canvas { display: block; width: 100%; height: 300px; }
.lab-screen-tall canvas { height: 360px; }
.lab-screen-live { flex: 1 1 auto; min-height: 340px; }
.lab-screen-live canvas { height: 100%; }
.lab-screen-mini canvas { height: 190px; }
.lab-screen.lab-screen-square canvas { width: 100%; aspect-ratio: 1; height: auto; }
.lab-screen-selected canvas { height: 250px; }

/* ---------- 网格 ---------- */
.lab-grid { display: grid; gap: 1.1rem; }
.lab-grid-2 { grid-template-columns: 1fr 1fr; }
.lab-grid-3 { grid-template-columns: repeat(3, 1fr); }
.lab-lab-grid { grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); align-items: stretch; }
.lab-lab-grid > .lab-panel:first-child { display: flex; flex-direction: column; }
.lab-lab-side { display: grid; grid-template-rows: auto auto; gap: 1.1rem; }

.lab-callout { margin: 1.6rem 0 0; text-align: center; color: var(--text-secondary); font-size: .95rem; }
.lab-callout em { color: var(--ca3); font-style: normal; font-weight: 600; }

/* ---------- 仪器读数 ---------- */
.lab-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: .75rem; margin-top: 1.1rem; }
.lab-stat {
    padding: .85rem 1rem; border-radius: 12px; text-align: center;
    background: color-mix(in srgb, var(--glass-bg) 80%, var(--ca) 6%);
    border: 1px solid var(--glass-border); box-shadow: var(--glass-shadow), var(--glass-inset-highlight);
    transition: transform .25s ease, box-shadow .25s ease;
}
.lab-stat:hover { transform: translateY(-2px); box-shadow: var(--glass-shadow-hover), var(--glass-inset-highlight); }
.lab-stat b { display: block; color: var(--ca); font: 1.3rem ui-monospace, monospace; }
.lab-stat span { color: var(--text-secondary); font-size: .75rem; }

/* ---------- 实验引导 / 判定 ---------- */
.lab-guide {
    display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1px; margin-top: 1.1rem;
    border: 1px solid var(--glass-border); border-radius: 14px; overflow: hidden; background: var(--glass-border);
}
.lab-guide-cell { display: flex; flex-direction: column; gap: .45rem; padding: 1rem 1.15rem; background: var(--glass-bg); color: var(--text-secondary); font-size: .82rem; line-height: 1.8; }
.lab-guide-cell strong { color: var(--ca); font: .72rem ui-monospace, monospace; letter-spacing: .06em; }
.lab-guide-cell:nth-child(2) strong { color: var(--ca2); }
.lab-verdict strong { font-size: .95rem; }
.lab-verdict strong.verdict-ok { color: var(--ok); }
.lab-verdict strong.verdict-warn { color: var(--warn); }
.lab-verdict strong.verdict-hot { color: var(--hot); }

/* ---------- 控制台 ---------- */
.lab-controls {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem 1.2rem; margin-top: 1.1rem; padding: 1.15rem 1.25rem;
    border-radius: 14px;
}
.lab-controls label { color: var(--text-secondary); font-size: .84rem; }
.lab-controls output { float: right; color: var(--ca); font: .78rem ui-monospace, monospace; }
.lab-controls input[type="range"] { display: block; width: 100%; margin-top: .75rem; accent-color: var(--ca); }
.lab-control-buttons { grid-column: 1 / -1; display: flex; gap: .6rem; flex-wrap: wrap; margin-top: .2rem; }

.lab-btn {
    padding: .5rem 1.05rem; border-radius: 999px; cursor: pointer; font-size: .84rem;
    color: var(--text-primary); border: 1px solid color-mix(in srgb, var(--ca) 40%, transparent);
    background: color-mix(in srgb, var(--ca) 8%, transparent); transition: all .22s ease;
}
.lab-btn:hover { border-color: color-mix(in srgb, var(--ca) 70%, transparent); background: color-mix(in srgb, var(--ca) 16%, transparent); transform: translateY(-1px); }
.lab-btn-hot { color: var(--hot); border-color: color-mix(in srgb, var(--hot) 45%, transparent); background: color-mix(in srgb, var(--hot) 9%, transparent); }
.lab-btn-hot:hover { border-color: color-mix(in srgb, var(--hot) 75%, transparent); background: color-mix(in srgb, var(--hot) 17%, transparent); }

/* ---------- 混沌地图 ---------- */
.lab-map-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; margin-bottom: 1rem; }
.lab-map-modes { display: flex; flex-wrap: wrap; gap: .5rem; }
.lab-mode {
    padding: .48rem 1rem; border-radius: 999px; cursor: pointer; font-size: .82rem;
    color: var(--text-secondary); border: 1px solid var(--glass-border); background: var(--glass-bg); transition: all .2s ease;
}
.lab-mode:hover { color: var(--text-primary); border-color: color-mix(in srgb, var(--ca) 45%, transparent); }
.lab-mode.is-active {
    color: var(--ca); border-color: color-mix(in srgb, var(--ca) 55%, transparent);
    background: color-mix(in srgb, var(--ca) 12%, transparent); font-weight: 600;
}
.lab-map-actions { display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; }
.lab-scan-speed { font: .72rem ui-monospace, monospace; color: var(--text-secondary); }
.lab-scan-cond {
    font: .72rem ui-monospace, monospace; color: var(--ca);
    padding: .22rem .6rem; border-radius: 999px;
    border: 1px dashed color-mix(in srgb, var(--ca) 45%, transparent);
}
.lab-scan-cond.is-dirty { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 55%, transparent); background: color-mix(in srgb, var(--warn) 9%, transparent); }

.lab-progress { display: flex; flex-direction: column; gap: .45rem; margin-bottom: 1.5rem; }
.lab-progress-track { height: 8px; border-radius: 999px; background: color-mix(in srgb, var(--text-secondary) 22%, transparent); overflow: hidden; }
.lab-progress-fill { height: 100%; width: 0; border-radius: 999px; background: linear-gradient(90deg, var(--ca2), var(--ca)); transition: width .35s ease; }
.lab-progress-meta { display: flex; justify-content: space-between; gap: 1rem; font: .72rem ui-monospace, monospace; color: var(--text-secondary); flex-wrap: wrap; }

.lab-map-layout { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr); gap: clamp(1.2rem, 4vw, 2.4rem); align-items: start; }
.lab-map-frame { position: relative; padding: .55rem; border-radius: 16px; }
.lab-map-frame canvas {
    display: block; width: 100%; aspect-ratio: 1; border-radius: 10px; background: #060b18;
    image-rendering: pixelated; cursor: crosshair; border: 1px solid var(--ca-border);
}
.map-axis { position: absolute; color: var(--text-secondary); font: .64rem ui-monospace, monospace; letter-spacing: .08em; pointer-events: none; }
.map-axis-x { right: 1.1rem; bottom: .75rem; }
.map-axis-y { top: .8rem; left: .9rem; writing-mode: vertical-rl; }

.lab-map-copy { color: var(--text-secondary); line-height: 1.9; font-size: .9rem; }
.lab-legend-box { display: flex; flex-direction: column; gap: .55rem; margin-bottom: 1.2rem; }
.lg-strip { height: 9px; border-radius: 999px; background: linear-gradient(90deg, #ff4d64, #ffb35c, #7ce7c8, #4de7ff); }
.lg-caption { font: .7rem ui-monospace, monospace; color: var(--text-secondary); }
.lg-chip { display: inline-flex; align-items: center; gap: .45rem; font: .72rem ui-monospace, monospace; color: var(--text-secondary); }
.sw { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.sw-pink { background: #ff4db8; box-shadow: 0 0 8px #ff4db8; }
.sw-teal { background: #3ed4b2; box-shadow: 0 0 8px #3ed4b2; }
.sw-navy { background: #0a1640; border: 1px solid color-mix(in srgb, var(--ca) 35%, transparent); }
.sw-gray { background: #2e3650; border: 1px solid color-mix(in srgb, var(--ca) 30%, transparent); }
.lab-stat-line {
    display: flex; justify-content: space-between; align-items: baseline; gap: 1rem;
    padding: .45rem 0; border-bottom: 1px dashed color-mix(in srgb, var(--text-secondary) 26%, transparent); font-size: .84rem;
}
.lab-stat-line b { font-weight: 500; color: var(--text-secondary); }
.lab-stat-line span { font: .78rem ui-monospace, monospace; color: var(--ca); }
.lab-tip { margin-top: 1.2rem; font-size: .82rem; }
.map-selection {
    margin-top: 1.1rem; padding: .65rem .85rem; border-radius: 8px;
    border-left: 3px solid var(--ca2); background: color-mix(in srgb, var(--ca2) 10%, transparent);
    font: .76rem ui-monospace, monospace; color: var(--text-primary);
}

.lab-map-detail { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr); gap: clamp(1.2rem, 4vw, 2.4rem); align-items: center; margin-top: 1.5rem; }
.selected-copy { font-size: .9rem; }
.selected-copy .lab-stat-line:first-child { border-top: 1px dashed color-mix(in srgb, var(--text-secondary) 26%, transparent); margin-top: -1px; }

/* ---------- 尾声 ---------- */
.lab-outro { padding: 4.5rem 0 5.5rem; }
.lab-outro .lab-head { text-align: center; }
.lab-outro h3 { color: var(--text-primary); }
.lab-backtop { text-align: center; margin-top: 2.2rem; }
.lab-backtop a { color: var(--ca); text-decoration: none; font: .76rem ui-monospace, monospace; letter-spacing: .12em; }
.lab-backtop a:hover { text-decoration: underline; }

/* ---------- 响应式 ---------- */
@media (max-width: 991.98px) {
    .lab-lab-grid, .lab-map-layout, .lab-map-detail { grid-template-columns: 1fr; }
    .lab-lab-grid > .lab-panel:first-child { display: block; }
    .lab-screen-live { flex: none; }
    .lab-screen-live canvas { height: 400px; }
    .lab-grid-3 { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
    .lab-section { padding: 3.2rem 0; }
    .lab-grid-2 { grid-template-columns: 1fr; }
    .lab-stats { grid-template-columns: 1fr 1fr; }
    .lab-guide { grid-template-columns: 1fr; }
    .lab-controls { grid-template-columns: 1fr; }
    .lab-screen canvas { height: 260px; }
    .lab-screen-tall canvas { height: 300px; }
    .lab-screen-live canvas { height: 320px; }
    .lab-screen-mini canvas { height: 165px; }
    .lab-stations { top: 56px; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .lab-panel, .lab-btn, .lab-mode, .lab-stat { transition: none; }
}