:root{color-scheme:light;--ink:#152e32;--muted:#4a6265;--line:#d9e2df;--accent:#116759;--paper:#f7f8f4}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.85 system-ui,"Microsoft YaHei",sans-serif}header,main,footer{max-width:1120px;margin:auto;padding:24px 32px}header{display:flex;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line)}header span,footer,.muted{color:var(--muted);font-size:.86rem}.brand{font-weight:750;text-decoration:none}a{color:var(--accent);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}nav,.links{display:flex;flex-wrap:wrap;gap:12px 24px}nav{padding:12px 0}h1{font-size:clamp(2rem,4.8vw,3.3rem);line-height:1.3;max-width:850px;font-weight:750;letter-spacing:-.03em}h2{font-size:1.6rem;line-height:1.45}h3{font-size:1.15rem}p{max-width:850px}.hero{padding:38px 0 46px;border-bottom:1px solid var(--line)}.intro{font-size:1.15rem;color:var(--muted);max-width:760px}.eyebrow{color:var(--accent);font-weight:650}section{padding:28px 0;border-bottom:1px solid var(--line)}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}.cards article,.faq{padding:20px;border:1px solid var(--line);background:white;border-radius:8px}.faq{margin:14px 0}.faq h3{margin:0}.button,button{display:inline-block;background:var(--accent);color:white;padding:10px 22px;border:0;border-radius:5px;font:inherit;text-decoration:none;cursor:pointer}button:disabled{opacity:.55;cursor:wait}button.secondary{background:#e0eae5;color:var(--ink)}.notice{padding:12px 18px;background:#edf0d9;border-left:4px solid #818d34}.error{background:#fff0eb;border-left-color:#a0442d}label{display:block;margin:14px 0}input,select,textarea{font:inherit;padding:10px;border:1px solid #77928c;border-radius:4px;max-width:100%;background:white}textarea{display:block;width:100%;min-height:210px}fieldset{margin:20px 0;padding:20px;border:1px solid var(--line)}fieldset label{display:flex;align-items:center;gap:12px}table{width:100%;border-collapse:collapse;font-size:.88rem}td,th{text-align:left;vertical-align:top;padding:12px;border-bottom:1px solid var(--line)}.table-wrap{overflow:auto}code{overflow-wrap:anywhere;font-size:.85em}pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#e9efeb;padding:18px}.skip{position:absolute;left:-9999px}.skip:focus{left:10px;top:5px;background:white;padding:8px}:focus-visible{outline:3px solid #ad7624;outline-offset:4px}footer{margin-top:35px}.metric{font-size:1.5rem;font-weight:700}@media(max-width:650px){header,main,footer{padding:18px}header span{display:none}.hero{padding:18px 0 28px}section{padding:20px 0}table{min-width:620px}h1{font-size:2.1rem}button,.button{width:100%;text-align:center}}

.directory-hero{padding:20px 0 28px}.directory-hero h1{font-size:clamp(1.8rem,3.5vw,2.6rem)}.test-directory h2{margin-bottom:8px}.topic-links{margin:14px 0 24px;gap:10px}.topic-links a{padding:7px 16px;border:1px solid var(--line);border-radius:24px;text-decoration:none;background:white}.topic-links a:hover{border-color:var(--accent)}.test-cards article{display:flex;flex-direction:column;scroll-margin-top:24px}.test-cards h3{font-size:1.4rem;margin:0 0 8px}.test-cards p{margin:6px 0 12px}.test-scenario{font-weight:650}.test-facts{color:var(--accent);font-weight:650}.dimension-tags{display:flex;flex-wrap:wrap;gap:6px;list-style:none;padding:0;margin:0 0 24px}.dimension-tags li{font-size:.82rem;background:#edf3ee;padding:3px 9px;border-radius:4px}.test-cards .button{margin-top:auto;text-align:center;padding:10px}.test-cards .muted{font-size:.8rem}@media(max-width:650px){.topic-links a{font-size:.9rem}.test-cards{grid-template-columns:1fr}.directory-hero h1{font-size:1.85rem}}