:root{color-scheme:light;--page-bg:#eef6f4;--surface:#fff;--surface-tint:#f6fbfa;--surface-soft:#e7f1ef;--text:#1d2d29;--text-muted:#4f6761;--border:#c6d8d5;--accent-turf:#2f6b44;--accent-blue-gray:#66808a;--accent-marker:#d9bd58;--route-green:#7ba983;--section-radius:.5rem;--content-width:74rem;--hero-shadow:0 22px 42px #34584f14;font-family:system-ui,Segoe UI,Helvetica Neue,Arial,sans-serif}*{box-sizing:border-box}html,body{background:var(--page-bg);min-width:320px;color:var(--text);margin:0}body{line-height:1.5}a{color:inherit;text-underline-offset:.18em;text-decoration-thickness:.08em}a:hover{color:var(--accent-turf)}a:focus-visible{outline:3px solid var(--accent-marker);outline-offset:3px}.skip-link{z-index:20;background:var(--text);color:#fff;padding:.65rem .85rem;font-weight:700;position:fixed;top:.75rem;left:.75rem;transform:translateY(-180%)}.skip-link:focus{transform:translateY(0)}.site-frame,.site-main{width:min(100% - 2rem, var(--content-width));margin-inline:auto}.site-header,.site-footer{background:var(--surface)}.site-header{z-index:10;background:#fffffff0;border-bottom:1px solid #66808a38;position:sticky;top:0}.site-header-inner,.site-footer-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem 1.5rem;display:flex}.site-header-inner{min-height:4.6rem;padding-block:.95rem}.site-brand{color:inherit;align-items:center;gap:.9rem;text-decoration:none;display:inline-flex}.site-brand-mark{width:6.5rem;height:4.15rem;color:var(--accent-turf);background:#edf6f1;border:1px solid #2f6b442e;border-radius:.55rem;justify-content:center;align-items:center;padding:0;display:inline-flex;overflow:hidden}.site-brand-mark img{object-fit:cover;width:100%;height:100%;display:block}.site-brand-symbol{width:100%;height:100%;display:block}.brand-symbol-grass{fill:var(--accent-turf)}.brand-symbol-cut{fill:#f7fbfa}.brand-symbol-shadow{fill:#1d2d292e}.brand-symbol-wheel{fill:#405b64;stroke:#2a4148;stroke-width:1.2px}.brand-symbol-wheel-back{fill:var(--accent-blue-gray)}.brand-symbol-body{fill:var(--accent-turf);stroke:#214f32;stroke-width:1.5px}.brand-symbol-panel{fill:#dbe9ee;stroke:#506a73;stroke-width:1.2px}.brand-symbol-sensor{fill:var(--accent-marker);stroke:#8e7629;stroke-width:1px}.brand-symbol-trim{fill:none;stroke:#fff;stroke-width:1.8px;stroke-linecap:round}.site-brand-copy{gap:.15rem;display:grid}.site-brand-copy strong{letter-spacing:-.02em;font-size:1.05rem}.site-brand-copy span{color:var(--text-muted);max-width:34rem;font-size:.92rem}.primary-nav,.site-footer nav{flex-wrap:wrap;gap:.55rem 1rem;display:flex}.primary-nav a,.site-footer a{color:var(--accent-blue-gray);font-weight:600;text-decoration:none}.primary-nav a:hover,.site-footer a:hover{color:var(--accent-turf)}.site-main{padding-block:clamp(1.6rem,4.8vw,3.5rem)}.site-footer{border-top:1px solid var(--border);color:var(--text-muted);margin-top:1.8rem;font-size:.92rem}.site-footer-inner{padding-block:1.2rem 1.45rem}.site-footer p{max-width:40rem;margin:0}h1,h2,h3{color:var(--text);letter-spacing:-.03em;margin:0}h1{font-size:clamp(2.2rem,4vw,3.8rem);line-height:1.05}h2{font-size:clamp(1.45rem,2.8vw,2.2rem);line-height:1.12}h3{font-size:1.04rem;line-height:1.22}.eyebrow,.section-label{color:var(--accent-turf);letter-spacing:.05em;text-transform:uppercase;margin:0;font-size:.92rem;font-weight:750}.lede{max-width:40rem;color:var(--accent-blue-gray);margin:0;font-size:1.08rem;font-weight:640}.hero,.section-block{border:1px solid var(--border);background:var(--surface);border-radius:var(--section-radius);padding:clamp(1.2rem,3vw,2rem)}.section-block+.section-block{margin-top:1.1rem}.hero{box-shadow:var(--hero-shadow);grid-template-columns:minmax(0,1.05fr) minmax(18rem,.95fr);align-items:center;gap:1.5rem;display:grid}.section-heading{gap:.7rem;max-width:47rem;margin-bottom:1.15rem;display:grid}.section-summary,.hero-support,.decision-step p,.path-row p,.topic-row p{color:var(--text-muted);margin:0}.hero-copy{gap:.95rem;display:grid}.hero-support{max-width:38rem;font-size:1.04rem}.hero-links{flex-wrap:wrap;gap:.65rem 1rem;display:flex}.hero-links a{color:var(--accent-turf);font-weight:750}.hero-diagram{background:#f3f8f6;border:1px solid #66808a2e;padding:.55rem}.hero-diagram svg{max-width:100%;height:auto;display:block}.hero-diagram img{width:100%;max-width:100%;height:auto;display:block}.hero-generated-art{background:#f7fbfa;padding:0;overflow:hidden}.hero-generated-art img{aspect-ratio:1;object-fit:cover}.clean-cut-frame{fill:#f7fbfa;stroke:#66808a6b;stroke-width:2px}.clean-cut-lawn{fill:#dff0d8;stroke:#2f6b4461;stroke-width:2px}.clean-cut-pass-outer{fill:#2f6b44}.clean-cut-pass-inner{fill:#f6fbfa}.clean-cut-route{fill:none;stroke:#d9bd58;stroke-width:5px;stroke-linecap:round;stroke-dasharray:10 9}.clean-cut-tree circle{fill:#86b98a;stroke:#2f6b448f;stroke-width:2px}.clean-cut-tree-soft circle{fill:#b4d7bc}.clean-cut-tree .clean-cut-tree-core{fill:#5f8c65;stroke:none}.clean-cut-passage{fill:#e7f1ef;stroke:#66808a7a;stroke-width:2px}.clean-cut-dock rect{fill:#f4df95;stroke:#a88428;stroke-width:2px}.clean-cut-dock path{fill:var(--accent-blue-gray)}.clean-cut-mower-shadow{fill:#1d2d292e}.clean-cut-wheel{fill:#405b64;stroke:#2a4148;stroke-width:3px}.clean-cut-wheel-back{fill:var(--accent-blue-gray)}.clean-cut-wheel-hub{fill:#dbe9ee;stroke:#405b64;stroke-width:3px}.clean-cut-mower-body{fill:var(--accent-turf);stroke:#214f32;stroke-width:4px}.clean-cut-mower-panel{fill:#dbe9ee;stroke:#506a73;stroke-width:3px}.clean-cut-mower-window{fill:#66808a;stroke:#405b64;stroke-width:3px}.clean-cut-mower-sensor{fill:var(--accent-marker);stroke:#8e7629;stroke-width:2px}.clean-cut-mower-trim,.clean-cut-mower-slot{fill:none;stroke:#fff;stroke-width:4px;stroke-linecap:round}.planner-frame,.planner-zone,.planner-passage{stroke-width:2px}.planner-frame{fill:#f7fbfa;stroke:#66808a6b}.planner-zone-front{fill:#dff0d8;stroke:#2f6b4466}.planner-zone-upper{fill:#dbe9ee;stroke:#66808a7a}.planner-zone-back{fill:#e9f4db;stroke:#2f6b4452}.planner-passage{fill:#edf5f5;stroke:#66808a6b}.planner-dock{fill:#f4df95;stroke:#c49d2f;stroke-width:2px}.planner-tree{fill:#86b98a;stroke:#2f6b448f;stroke-width:2px}.planner-tree-soft{fill:#b4d7bc}.planner-route{fill:none;stroke:var(--accent-turf);stroke-linecap:round;stroke-linejoin:round;stroke-width:5px}.planner-route-soft{stroke:var(--route-green);stroke-width:3.2px}.planner-slope{stroke:var(--accent-marker);stroke-dasharray:8 7;stroke-width:3px}.planner-label{fill:var(--text);font-size:15px;font-weight:700}.planner-label-marker{fill:#7a6223}.decision-flow,.path-list,.topic-preview-list{gap:.85rem;display:grid}.decision-flow{grid-template-columns:repeat(2,minmax(0,1fr));margin:0;padding:0;list-style:none}.decision-step,.path-row,.topic-row{border:1px solid var(--border);border-radius:.45rem;padding:1rem 1.05rem}.decision-step{background:var(--surface-tint)}.decision-step h3,.path-row h3,.topic-row h3{margin-bottom:.45rem}.path-row{background:#f8fbfb;grid-template-columns:minmax(10rem,.42fr) minmax(0,1fr);align-items:start;gap:1rem;display:grid}.topic-preview-list{background:var(--surface-soft);border:1px solid #66808a24;border-radius:.45rem;padding:.9rem}.topic-row{background:#ffffffe0;grid-template-columns:minmax(8rem,.3fr) minmax(0,1fr);gap:1rem;display:grid}.topic-link{color:inherit;gap:.45rem;text-decoration:none;display:grid}.topic-link:hover h3{color:var(--accent-turf)}.topic-path{color:var(--accent-blue-gray);letter-spacing:.04em;text-transform:uppercase;margin:0;font-size:.92rem;font-weight:700}@media (width<=720px){.site-frame,.site-main{width:min(100% - 1.25rem, var(--content-width))}.site-header-inner,.site-footer-inner,.site-brand{align-items:flex-start}.site-brand-copy span{max-width:none}.primary-nav{width:100%}.hero,.path-row,.topic-row,.decision-flow{grid-template-columns:1fr}.topic-preview-list{padding:.75rem}}@media (width<=520px){h1{font-size:clamp(2rem,11vw,2.8rem)}.hero,.section-block{padding:1rem}.planner-label{font-size:13px}}.content-page{gap:1rem;max-width:52rem;margin-inline:auto;display:grid}.content-page-header,.content-page-body{border:1px solid var(--border);border-radius:var(--section-radius);background:var(--surface);padding:clamp(1.2rem,3vw,2rem)}.content-page-header{gap:.8rem;display:grid}.content-page-header>p:last-child{color:var(--text-muted);margin:0;font-size:1.08rem}.content-page-body>:first-child{margin-top:0}.content-page-body>:last-child{margin-bottom:0}.content-page-body h2{margin-top:1.6rem}.content-page-body p,.content-page-body li{color:var(--text-muted)}.content-page-body a{color:var(--accent-turf);font-weight:700}.article-illustration{border:1px solid var(--border);border-radius:var(--section-radius);background:var(--surface);margin:0;overflow:hidden}.article-illustration img{width:100%;height:auto;display:block}.article-illustration figcaption{border-top:1px solid var(--border);color:var(--text-muted);padding:.75rem 1rem;font-size:.9rem}.article-section>.article-illustration,.comparison-table-block>.article-illustration{margin-bottom:1rem}.guide-shell{gap:1.15rem;display:grid}.guide-shell,.guide-body,.guide-content,.comparison-table-block,.comparison-table-shell{min-width:0}.guide-hero,.article-section,.identity-grid,.comparison-table-block,.related-guides-block,.source-notes{border:1px solid var(--border);border-radius:var(--section-radius);background:var(--surface);padding:clamp(1.15rem,2.8vw,1.7rem)}.guide-hero{box-shadow:var(--hero-shadow);grid-template-columns:minmax(0,1fr) minmax(14rem,.36fr);align-items:start;gap:1.2rem;display:grid}.guide-hero-copy{gap:.85rem;display:grid}.guide-deck,.article-section p,.article-section li,.identity-card-summary,.callout-copy,.source-note-item p{color:var(--text-muted);margin:0}.guide-deck{max-width:46rem;font-size:1.04rem}.identity-card-label,.article-toc-title,.comparison-table caption{color:var(--accent-blue-gray);letter-spacing:.04em;text-transform:uppercase;font-size:.86rem;font-weight:750}.guide-body{grid-template-columns:minmax(0,1fr);display:grid}.article-toc{border:1px solid var(--border);background:#f7fbfa;border-radius:.5rem;padding:1rem}.article-toc-title{margin:0 0 .75rem}.article-toc ol{counter-reset:article-toc;grid-template-columns:repeat(auto-fit,minmax(16rem,1fr));gap:.55rem 1rem;margin:0;padding:0;list-style:none;display:grid}.article-toc li{counter-increment:article-toc;grid-template-columns:1.4rem minmax(0,1fr);gap:.35rem;display:grid}.article-toc li:before{content:counter(article-toc) ".";color:var(--text)}.article-toc a{color:var(--accent-blue-gray);text-decoration:none}.article-toc a:hover{color:var(--accent-turf)}.guide-content{gap:1rem;display:grid}.affiliate-disclosure{color:var(--text-muted);text-align:center;margin:-.2rem 0 0;font-size:.88rem;font-weight:500}.article-section{gap:.85rem;display:grid}.article-section ul,.article-section ol,.identity-card-points,.source-note-list,.related-guides{margin:0;padding-left:1.1rem}.article-section h2,.identity-card h2,.callout h2{font-size:clamp(1.2rem,2.2vw,1.55rem)}.featured-products{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:var(--surface);gap:0;display:grid}.featured-products .affiliate-disclosure{border-bottom:1px solid var(--border);margin:0;padding:.75rem 1rem}.homepage-products{border:1px solid var(--border);border-radius:var(--section-radius);margin-top:1.1rem;overflow:hidden}.homepage-products-heading{max-width:none;margin:0;padding:1.2rem}.identity-grid{background:0 0;border:0;border-radius:0;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;padding:0;display:grid}.identity-grid-single{grid-template-columns:minmax(0,1fr);width:min(100%,38rem);margin-inline:auto}.identity-card{border:0;border-right:1px solid var(--border);background:var(--surface);border-radius:0;grid-template-rows:auto auto auto 1fr auto;gap:0;min-width:0;padding:1rem;display:grid}.identity-card:first-child{border-left:1px solid var(--border)}.product-matrix__product h2{min-height:3.5rem;color:var(--text);text-align:center;justify-content:center;align-items:center;margin:0 0 1rem;font-size:clamp(1.5rem,2.5vw,1.8rem);line-height:1.15;display:flex}.product-matrix__image-link{border-block:1px solid var(--border);display:block}.product-matrix__image-link img{aspect-ratio:1;object-fit:contain;width:100%;height:auto;display:block}.product-matrix__fact{color:var(--text-muted);text-align:center;margin:.8rem 0 0;font-size:.9rem;line-height:1.45}.product-matrix__features{color:var(--text-muted);gap:.65rem;margin:1.125rem 0 0;padding-left:1.15rem;font-size:.94rem;line-height:1.5;display:grid}.product-matrix__features li::marker{color:var(--accent-turf)}.commerce-cta{color:var(--text);text-align:center;background:#ef861c;border:1px solid #b94e00;border-radius:.6rem;place-self:end center;margin-top:1.2rem;padding:.78rem 1.1rem;font-weight:850;line-height:1.2;text-decoration:none;box-shadow:0 2px #a74100}.commerce-cta:hover{color:var(--text);background:#dd7009;box-shadow:0 2px #8d3700}.product-matrix__image-link:focus-visible,.commerce-cta:focus-visible{outline:3px solid var(--accent-marker);outline-offset:4px}.comparison-table-shell{max-width:100%;overflow-x:auto}.comparison-table{border-collapse:collapse;width:100%;min-width:40rem}.comparison-table caption{text-align:left;margin-bottom:.75rem}.comparison-table th,.comparison-table td{border:1px solid var(--border);text-align:left;vertical-align:top;padding:.8rem .85rem}.comparison-table thead th{color:var(--text);background:#eef5f4}.comparison-table tbody th{background:#f8fbfb;width:22%;font-weight:700}.comparison-table-note-row td,.comparison-table-note-row th{color:var(--text-muted);background:#fbfcf8}.callout{border-radius:.5rem;gap:.45rem;padding:.95rem 1rem;display:grid}.callout h2{margin:0}.callout-caution{background:#f8f3de;border:1px solid #d9bd5899}.callout-unknown{background:#f2f6f7;border:1px solid #66808a52}.source-note-list{gap:.85rem;display:grid}.source-note-item a{font-weight:700}.source-note-item p{margin-top:.25rem}.related-guides-block{background:var(--surface-tint);gap:.8rem;display:grid}.related-guides{gap:.55rem;display:grid}.related-guides a{font-weight:700}@media (width<=960px){.guide-body,.guide-hero{grid-template-columns:1fr}}@media (width<=720px){.article-toc ol,.identity-grid{grid-template-columns:1fr}.identity-card,.identity-card:first-child{border-left:0;border-right:0;border-top:1px solid var(--border);padding:1.25rem 0}.identity-card:first-child{border-top:0}.product-matrix__product h2{min-height:0;margin-bottom:.8rem;padding-inline:1rem;font-size:1.55rem}.product-matrix__image-link{justify-self:center;width:min(100%,18rem)}.product-matrix__fact,.product-matrix__features{justify-self:center;width:min(100% - 2rem,40rem)}.comparison-table{min-width:34rem}}