/* 实验台栏目页：深色发光横幅呼应实验台风格，下方按学科标签切换卡片。 */
.labs-page{max-width:1280px;margin:0 auto;padding:26px 32px 60px}
.labs-hero{position:relative;display:grid;grid-template-columns:1fr minmax(320px,440px);align-items:center;gap:30px;padding:34px 40px;border-radius:22px;overflow:hidden;color:#e6f1ff;background:radial-gradient(120% 140% at 85% 20%,#173b66 0%,#0a1626 55%,#060b14 100%);box-shadow:0 18px 40px rgba(6,20,40,.18)}
.labs-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(62,224,255,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(62,224,255,.08) 1px,transparent 1px);background-size:36px 36px;pointer-events:none}
.labs-hero-copy{position:relative}
.labs-kicker{margin:0 0 6px;color:#6ff3ff;font-size:14px;font-weight:800;letter-spacing:.2em}
.labs-hero h1{margin:0 0 10px;font-size:46px;letter-spacing:.06em;background:linear-gradient(100deg,#6ff3ff,#ffffff 45%,#ffd27a);-webkit-background-clip:text;background-clip:text;color:transparent}
.labs-hero-copy>p:last-child{margin:0;max-width:560px;color:#bcd3e8;font-size:16px;line-height:1.75}
.labs-hero-art{position:relative;width:100%}
.lh-wire,.lb-wire{fill:none;stroke:#2f6f9a;stroke-width:4;stroke-linejoin:round}
.lh-flow,.lb-flow{fill:none;stroke:#ffc15a;stroke-width:6;stroke-linecap:round;stroke-dasharray:.1 22;animation:labsFlow 1s linear infinite;filter:drop-shadow(0 0 4px #ffb347)}
@keyframes labsFlow{to{stroke-dashoffset:-22}}
.lh-halo,.lb-halo{fill:rgba(255,207,90,.28);filter:blur(10px);animation:labsGlow 2.2s ease-in-out infinite}
@keyframes labsGlow{50%{opacity:.6}}
.lh-lamp,.lb-lamp{fill:#0a1626;stroke:#ffd27a;stroke-width:3}.lh-x,.lb-x{stroke:#fff3c4;stroke-width:3}
.lh-res{fill:#0a1626;stroke:#cfe8ff;stroke-width:3}
.lh-cell,.lb-sym{fill:none;stroke:#cfe8ff;stroke-width:3;stroke-linecap:round}.lh-cell{stroke-width:3}.thick{stroke-width:8!important}
.lh-meter,.lb-meter{fill:#0a1626;stroke:#6ff3ff;stroke-width:3}.lh-a,.lb-a{fill:#6ff3ff;font:700 17px "Microsoft YaHei",sans-serif;text-anchor:middle}
.lb-cut{fill:#0b1a2d}.lb-node{fill:#cfe8ff}

.labs-tabs{display:flex;gap:10px;margin:26px 0 18px}
.labs-tabs button{display:inline-flex;align-items:center;gap:9px;padding:11px 22px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--ink);font:inherit;font-size:17px;font-weight:800;cursor:pointer;transition:.18s}
.labs-tabs button b{min-width:24px;padding:1px 7px;border-radius:999px;background:#eef4f8;color:var(--muted);font-size:13px}
.labs-tabs button:hover{border-color:var(--accent)}
.labs-tabs button[aria-selected="true"]{color:#06233a;border-color:var(--accent);background:color-mix(in srgb,var(--accent) 22%,#fff);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 22%,transparent)}
.labs-tabs button[aria-selected="true"] b{background:var(--accent);color:#06233a}

.labs-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.labs-card{display:grid;grid-template-columns:minmax(220px,44%) 1fr;min-height:250px;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fff;color:inherit;text-decoration:none;transition:transform .2s,box-shadow .2s,border-color .2s}
.labs-card:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:0 16px 34px rgba(23,63,89,.14)}
.labs-visual{position:relative;display:grid;place-items:center;padding:16px;background:radial-gradient(circle at 50% 45%,#ffffff,#e9f2f7 75%)}
.labs-visual img{width:100%;height:100%;max-height:220px;object-fit:contain}
.labs-card.is-bench .labs-visual{background:radial-gradient(130% 120% at 60% 30%,#173b66,#081222 70%)}
.labs-bench-art{width:100%;max-height:220px}
.labs-kind{position:absolute;left:12px;top:12px;padding:4px 11px;border-radius:999px;font-size:13px;font-weight:800;color:#06233a;background:var(--accent);box-shadow:0 0 14px color-mix(in srgb,var(--accent) 60%,transparent)}
.labs-body{display:flex;flex-direction:column;gap:10px;padding:22px 24px}
.labs-body h2{margin:0;font-size:23px;color:var(--ink)}
.labs-body p{margin:0;color:var(--muted);font-size:15px;line-height:1.7}
.labs-body ul{display:flex;flex-wrap:wrap;gap:7px;margin:0;padding:0;list-style:none}
.labs-body li{padding:3px 10px;border-radius:999px;font-size:13px;color:#24506b;background:color-mix(in srgb,var(--accent) 14%,#fff);border:1px solid color-mix(in srgb,var(--accent) 40%,#fff)}
.labs-action{display:flex;justify-content:space-between;align-items:center;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.labs-action b{color:var(--blue);font-size:15px}
.labs-card.is-bench .labs-action b{color:#0b84b8}

/* GLOW 化学实验台插画 */
.lg-halo{fill:rgba(69,240,160,.25);filter:blur(16px);animation:labsGlow 2.6s ease-in-out infinite}
.lg-flask,.lg-tube{fill:none;stroke:#cfe8ff;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.lg-liquid{fill:#45f0a0;opacity:.85;filter:drop-shadow(0 0 10px #45f0a0)}
.lg-liquid2{fill:#ff6fb5;opacity:.85;filter:drop-shadow(0 0 8px #ff6fb5)}
.lg-liquid3{fill:#5aa8ff;opacity:.85;filter:drop-shadow(0 0 8px #5aa8ff)}
.lg-bubble{fill:#eafff5;animation:labsBubble 2.4s ease-in infinite}.lg-bubble.b2{animation-delay:-.8s}.lg-bubble.b3{animation-delay:-1.6s}
@keyframes labsBubble{0%{transform:translateY(0);opacity:0}20%{opacity:1}100%{transform:translateY(-70px);opacity:0}}

@media(max-width:1100px){.labs-grid{grid-template-columns:1fr}}
@media(max-width:760px){.labs-hero{grid-template-columns:1fr}.labs-hero-art{display:none}.labs-card{grid-template-columns:1fr}.labs-page{padding:18px}}
@media(prefers-reduced-motion:reduce){.labs-page *{animation:none!important}}

/* 光学实验台卡片：白光经三棱镜色散 */
.lo-white{fill:none;stroke:#fffbe8;stroke-width:5;stroke-linecap:round;filter:drop-shadow(0 0 6px #fff3c4)}
.lo-ray{fill:none;stroke:var(--c);stroke-width:4;stroke-linecap:round;filter:drop-shadow(0 0 5px var(--c));animation:labsGlow 2.4s ease-in-out infinite}
.lo-prism{fill:rgba(191,244,255,.18);stroke:#bff4ff;stroke-width:3;stroke-linejoin:round;filter:drop-shadow(0 0 10px rgba(111,243,255,.6))}