:root{--ink:#14212b;--muted:#65727c;--line:#dfe7eb;--brand:#087f5b;--brand-dark:#075e46;--soft:#edf8f4;--warn:#fff5e8;--white:#fff;--shadow:0 14px 40px rgba(20,33,43,.08)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:#f7faf9;line-height:1.65}a{color:inherit;text-decoration:none}button,input{font:inherit}.wrap{width:min(1120px,calc(100% - 32px));margin:auto}.site-header{background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}.nav{height:66px;display:flex;align-items:center;justify-content:space-between}.logo{font-weight:800;font-size:21px;letter-spacing:-.5px}.logo span{color:var(--brand)}.nav-links{display:flex;gap:22px;color:var(--muted);font-size:14px}.hero{padding:72px 0 54px;background:linear-gradient(145deg,#effaf6,#fff 65%)}.eyebrow{display:inline-flex;padding:6px 11px;border-radius:999px;background:var(--soft);color:var(--brand-dark);font-size:13px;font-weight:700}.hero h1{font-size:clamp(34px,6vw,60px);line-height:1.12;max-width:780px;margin:20px 0 16px;letter-spacing:-2px}.hero p{font-size:18px;color:var(--muted);max-width:680px}.search{display:flex;max-width:720px;background:#fff;border:1px solid #cbd9d4;padding:7px;border-radius:16px;box-shadow:var(--shadow);margin-top:30px}.search input{flex:1;border:0;outline:0;padding:10px 13px;min-width:0}.search button,.primary{border:0;border-radius:11px;background:var(--brand);color:#fff;padding:11px 20px;font-weight:700;cursor:pointer}.hint{font-size:13px;color:var(--muted);margin-top:10px}.section{padding:58px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:22px}.section h2{font-size:30px;margin:0}.section-head p{margin:0;color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.card{display:block;background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;transition:.2s;box-shadow:0 4px 16px rgba(20,33,43,.03)}.card:hover{transform:translateY(-3px);border-color:#9bc8b9;box-shadow:var(--shadow)}.icon{width:46px;height:46px;display:grid;place-items:center;background:var(--soft);color:var(--brand-dark);border-radius:14px;font-weight:800}.card h3{margin:18px 0 6px}.card p{font-size:14px;color:var(--muted);margin:0}.tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}.tag{font-size:12px;padding:3px 8px;border-radius:999px;background:#f2f5f4;color:#53615b}.why{background:#12271f;color:#fff}.why-grid{display:grid;grid-template-columns:1.2fr repeat(3,1fr);gap:24px}.why p{color:#b9c8c2}.number{font-size:30px;font-weight:800;color:#6fe0b7}.ad-slot{border:1px dashed #aebbb6;border-radius:14px;text-align:center;color:#87938e;padding:22px;background:#fbfdfc}.breadcrumb{font-size:13px;color:var(--muted);padding-top:25px}.page-title{font-size:40px;line-height:1.2;margin:18px 0 10px}.lead{color:var(--muted);font-size:18px;max-width:760px}.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:26px;align-items:start}.panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;margin:18px 0}.panel h2,.panel h3{margin-top:0}.steps{counter-reset:item;list-style:none;padding:0}.steps li{counter-increment:item;display:flex;gap:13px;padding:12px 0;border-bottom:1px solid #edf1ef}.steps li:last-child{border:0}.steps li:before{content:counter(item);flex:0 0 28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--soft);color:var(--brand-dark);font-weight:800;font-size:13px}.warning{background:var(--warn);border-color:#f0cf9e}.decision{border-left:5px solid var(--brand)}.side{position:sticky;top:84px}.issue-list{display:grid;gap:10px}.issue-link{padding:13px 15px;border:1px solid var(--line);border-radius:12px;background:#fff}.issue-link:hover{border-color:var(--brand)}.footer{padding:38px 0;border-top:1px solid var(--line);color:var(--muted);font-size:13px;background:#fff}.footer-row{display:flex;justify-content:space-between;gap:20px}.search-results{display:none;max-width:720px;margin-top:10px;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}.search-results.active{display:block}.result{display:block;padding:13px 16px;border-bottom:1px solid var(--line)}.result:last-child{border:0}.result small{display:block;color:var(--muted)}@media(max-width:850px){.grid{grid-template-columns:repeat(2,1fr)}.why-grid{grid-template-columns:1fr 1fr}.content-grid{grid-template-columns:1fr}.side{position:static}.nav-links{display:none}}@media(max-width:520px){.grid,.why-grid{grid-template-columns:1fr}.hero{padding-top:45px}.hero h1{letter-spacing:-1px}.search button{padding:10px 13px}.section-head,.footer-row{align-items:start;flex-direction:column}.page-title{font-size:32px}}
.diagnostic-shell{border-top:5px solid var(--brand)}.diagnostic-scope{color:var(--muted);font-size:14px}.diagnostic-progress{font-size:13px;color:var(--brand-dark);font-weight:800;margin:22px 0 8px}.diagnostic-actions{display:flex;gap:10px;margin-top:20px}.diagnostic-actions button,.secondary{border:1px solid var(--brand);border-radius:11px;background:var(--brand);color:#fff;padding:10px 22px;font-weight:700;cursor:pointer}.diagnostic-actions .secondary,.secondary{background:#fff;color:var(--brand-dark)}.diagnostic-outcome{padding:18px;border-radius:13px;background:var(--soft);margin:18px 0}.outcome-stop{background:#fff0ed;border:1px solid #efb4a8}.part-list{display:grid;gap:12px}.part-card{border:1px solid var(--line);border-radius:13px;padding:16px}.part-card p{margin:7px 0}.part-card small{display:block;color:var(--muted);margin-top:6px}.repair-level{display:inline-block;margin-left:9px;padding:2px 7px;border-radius:999px;font-size:11px;background:#edf2f0}.level-3{background:#fff0ed;color:#9d2d1c}

.skip-link{position:fixed;top:8px;left:12px;z-index:100;padding:10px 16px;background:#fff;color:var(--brand-dark);border:2px solid var(--brand);border-radius:8px;transform:translateY(calc(-100% - 16px))}.skip-link:focus{transform:translateY(0)}