:root{--ink:#17312f;--deep:#102b2b;--lime:#b9e675;--paper:#f8f9f4;--muted:#637572;--line:#dce5dc;--shadow:0 20px 60px rgba(10,38,34,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{cursor:pointer}.wrap{width:min(1180px,calc(100% - 48px));margin:auto}
.site-header{background:var(--deep);color:#edf5ea;border-bottom:1px solid rgba(255,255,255,.12)}.header-inner{display:flex;align-items:center;gap:40px;min-height:78px}.brand{font-size:24px;font-weight:800;letter-spacing:-.06em;white-space:nowrap}.brand span:last-child{color:var(--lime)}.brand-mark{display:inline-grid;place-items:center;width:34px;height:34px;margin-right:7px;border:1px solid #a6d77a;border-radius:10px;color:var(--lime);font-size:24px;vertical-align:-3px}.site-header nav{display:flex;gap:30px;margin-left:auto}.site-header nav a{font-size:14px;font-weight:650;color:#cbdcd3}.site-header nav a:hover,.site-header nav a[aria-current]{color:var(--lime)}.header-action,.button{display:inline-flex;align-items:center;justify-content:center;border:1px solid #cbe996;background:var(--lime);color:var(--deep);padding:11px 18px;border-radius:9px;font-size:14px;font-weight:800;white-space:nowrap}.button:hover,.header-action:hover{filter:brightness(.94)}
.hero{background:radial-gradient(circle at 85% 10%,#2e5545,transparent 28%),linear-gradient(135deg,#102b2b,#153734 70%,#204b3b);color:#fff;padding:72px 0 82px}.eyebrow,.section-kicker,.panel-overline,.card-kicker{font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase}.eyebrow{display:flex;align-items:center;gap:10px;color:var(--lime);margin-bottom:32px}.live-dot{width:8px;height:8px;background:var(--lime);border-radius:50%}.hero-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:58px;align-items:center}.hero h1{font-size:clamp(42px,5vw,69px);line-height:1.06;letter-spacing:-.065em;margin:0 0 24px}.hero h1 em{color:var(--lime);font-style:normal}.hero-copy>p{font-size:19px;line-height:1.6;color:#c8dad3;max-width:510px;margin:0}.hero-points{display:flex;flex-wrap:wrap;gap:15px;margin-top:46px}.hero-points span{font-size:13px;color:#dbe8df;border-top:1px solid #5c8170;padding-top:11px}
.planner-panel{background:#fff;color:var(--ink);border-radius:18px;padding:26px;box-shadow:var(--shadow)}.panel-head,.section-head{display:flex;align-items:start;justify-content:space-between;gap:20px}.panel-overline{color:#688375}.panel-head h2{font-size:23px;letter-spacing:-.04em;margin:4px 0 20px}.panel-badge{background:#e9f6da;color:#2c5b38;padding:6px 10px;border-radius:20px;font-size:12px;font-weight:700}.calculator{display:grid;gap:16px}.field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.field{display:grid;gap:7px}.field label{font-size:14px;font-weight:700}.field input,.field select{height:46px;width:100%;background:#fafcf8;border:1px solid #cad9cf;border-radius:8px;padding:0 12px;color:var(--ink)}.field input:focus,.field select:focus{outline:3px solid #b8df91;outline-offset:1px}.form-hint{font-size:13px;color:var(--muted);margin:0}.calc-result{background:#eaf4df;border:1px solid #d8e9cd;border-radius:12px;padding:17px 19px}.result-kicker{display:block;color:#4f6f57;font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.result-value{display:block;font-size:33px;letter-spacing:-.05em;font-weight:850;line-height:1.25}.result-note{display:block;color:#4a6655;font-size:13px}.calc-actions{display:flex;gap:10px;flex-wrap:wrap}.calc-actions button{border:0;background:var(--deep);color:#fff;border-radius:8px;padding:11px 15px;font-size:14px;font-weight:750}.calc-actions button.secondary{background:#edf3ec;color:var(--deep)}
.section{padding:77px 0}.section-head{margin-bottom:26px;align-items:end}.section-kicker{color:#517d50}.section h2,.feature-band h2,.content h1{font-size:clamp(30px,3.2vw,43px);line-height:1.16;letter-spacing:-.05em;margin:5px 0 10px}.section-head p{color:var(--muted);margin:0}.text-link{font-size:14px;font-weight:800;text-decoration:underline;text-underline-offset:4px}.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.link-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:23px;min-height:205px;display:flex;flex-direction:column;transition:transform .18s,border-color .18s}.link-card:hover{transform:translateY(-3px);border-color:#8fbf79}.card-kicker{color:#6b8c67;letter-spacing:.08em}.link-card strong{font-size:19px;letter-spacing:-.03em;line-height:1.25;margin:10px 0}.link-card>span:nth-child(3){font-size:14px;color:var(--muted)}.card-go{margin-top:auto;padding-top:16px;font-weight:800;font-size:13px;color:#2f6c49}.feature-band{background:#e9f1e5;padding:65px 0}.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}.feature-band p{max-width:500px;color:#516960;font-size:17px}.feature-band .button{margin-top:16px;background:var(--deep);color:#fff;border-color:var(--deep)}.layer-diagram{display:grid;gap:8px;transform:skewY(-5deg)}.layer{display:flex;justify-content:space-between;padding:15px 22px;border-radius:7px;box-shadow:8px 8px 0 rgba(20,70,51,.08);font-weight:800}.layer b{font-size:12px;opacity:.65;text-transform:uppercase}.layer-top{background:#8eaba5}.layer-mid{background:#d2bb8e}.layer-base{background:#8e9891}.layer-earth{background:#735d47;color:#fff}
.site-footer{background:var(--deep);color:#d7e8dd;padding:55px 0}.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:35px}.footer-grid p{max-width:320px;color:#a8c0b1;font-size:14px}.footer-grid>div:not(:first-child){display:flex;flex-direction:column;gap:9px;font-size:14px}.footer-grid strong{color:#fff;margin-bottom:3px}.footer-grid a:hover{color:var(--lime)}.footer-brand{color:#fff}
.content{padding:36px 0 85px}.breadcrumbs{font-size:13px;color:#6c8078;margin-bottom:15px}.breadcrumbs a{text-decoration:underline;text-underline-offset:3px}.content-header{max-width:780px;margin-bottom:22px}.content-header>p{font-size:18px;color:#526962;margin:7px 0 0}.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:38px;align-items:start}.main-column>*:first-child{margin-top:0}.content-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:27px;margin:0 0 22px}.content-card h2{font-size:23px;letter-spacing:-.035em;margin:0 0 16px}.content-card h3{font-size:17px;margin:22px 0 7px}.content-card p,.content-card li{color:#425852}.content-card li{margin-bottom:7px}.content-card ul,.content-card ol{padding-left:22px}.sidebar{position:sticky;top:24px}.sidebar .content-card{padding:21px}.sidebar a{display:block;color:#2a6948;font-size:14px;font-weight:700;margin:11px 0}.source-list a{text-decoration:underline;text-underline-offset:3px}.tool-panel{max-width:760px}.tool-panel .calculator{gap:20px}.tool-panel .result-value{font-size:42px}.small-note{font-size:13px;color:#667d70}.notice{background:#edf4e7;border-left:4px solid #8eb56a;padding:15px 18px;border-radius:0 8px 8px 0}.data-table{width:100%;border-collapse:collapse}.data-table td,.data-table th{padding:10px;text-align:left;border-bottom:1px solid var(--line);font-size:14px}.data-table th{background:#f1f5ef}.tag-list{display:flex;flex-wrap:wrap;gap:8px}.tag-list a{background:#e9f1e4;border:1px solid #d5e5d0;border-radius:22px;padding:8px 12px;font-size:14px;font-weight:700}.plan-list{display:grid;gap:9px}.plan-item{display:flex;justify-content:space-between;gap:10px;background:#f2f6ee;border-radius:8px;padding:12px 14px}.plan-item button{background:none;border:0;color:#9a3b33;text-decoration:underline;font-size:13px}.print-only{display:none}
@media(min-width:900px){.tool-panel .calculator{grid-template-columns:minmax(0,1fr) minmax(220px,.85fr);align-items:start}.tool-panel .field-grid{grid-column:1;grid-template-columns:1fr}.tool-panel .calc-result{grid-column:2;grid-row:1}.tool-panel .calc-actions,.tool-panel .form-hint{grid-column:1/-1}.tool-panel .result-value{font-size:32px}.content-card .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:850px){.site-header nav{display:none}.header-inner{justify-content:space-between}.hero-grid,.feature-grid,.content-grid{grid-template-columns:1fr}.hero-grid{gap:35px}.hero{padding:48px 0}.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.sidebar{position:static}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.wrap{width:min(100% - 30px,1180px)}.header-inner{min-height:66px}.brand{font-size:21px}.header-action{padding:9px 11px;font-size:12px}.hero h1{font-size:43px}.hero-copy>p{font-size:16px}.hero-points{margin-top:25px}.planner-panel{padding:19px}.field-grid,.card-grid,.footer-grid{grid-template-columns:1fr}.section{padding:52px 0}.section-head{display:block}.section-head .text-link{display:inline-block;margin-top:13px}.feature-grid{gap:40px}.content{padding:30px 0 60px}.content-card{padding:20px}}
@media print{.site-header,.site-footer,.sidebar,.calc-actions,.no-print{display:none!important}.content{padding:0}.content-grid{display:block}.content-card{break-inside:avoid}.print-only{display:block}}

/* Photo and diagram system */
.brand-mark{border:0;width:29px;height:29px;margin-right:4px;color:var(--lime)}.brand-mark .icon{width:29px;height:29px;vertical-align:middle}
.hero{position:relative;isolation:isolate;overflow:hidden;background:var(--deep)}.hero-media,.hero-media img{position:absolute;inset:0;width:100%;height:100%}.hero-media{z-index:-2;display:block}.hero-media img{object-fit:cover;object-position:center 55%}.hero:before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(4,29,20,.86) 0%,rgba(6,37,26,.70) 39%,rgba(7,38,27,.30) 76%,rgba(7,38,27,.22) 100%)}.hero-content{position:relative}.hero-points span{display:inline-flex;align-items:center;gap:7px}.hero-points .icon{width:17px;height:17px;color:var(--lime)}
.steps-band{background:#fff;border-bottom:1px solid var(--line);padding:25px 0}.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}.step{display:grid;grid-template-columns:53px 1fr;column-gap:13px;align-items:center}.step-icon{grid-row:1/3;display:grid;place-items:center;width:53px;height:53px;border-radius:12px;background:#e7f4d8;color:#2a6b46}.step b{font-size:15px}.step>span:last-child{font-size:13px;color:var(--muted)}
.card-icon{display:grid;place-items:center;width:43px;height:43px;border-radius:11px;background:#eaf4df;color:#286943;margin-bottom:12px}.card-description{font-size:14px;color:var(--muted)}.link-card.with-photo{padding:0 0 19px;overflow:hidden}.link-card.with-photo>.card-kicker,.link-card.with-photo>strong,.link-card.with-photo>.card-description,.link-card.with-photo>.card-go{margin-left:17px;margin-right:17px}.link-card.with-photo>.card-kicker{margin-top:17px}.link-card.with-photo>.card-go{padding-top:15px}.card-photo{margin:0;width:100%;line-height:0}.card-photo img{width:100%;height:148px;object-fit:cover;display:block}.materials-grid{grid-template-columns:repeat(5,minmax(0,1fr))}.materials-grid .link-card{min-height:295px}.project-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.photo-figure{margin:0 0 22px}.photo-figure img{display:block;width:100%;height:auto;max-height:400px;object-fit:cover;aspect-ratio:3/2;border-radius:12px}.photo-figure figcaption,.diagram-figure figcaption{font-size:12px;color:#688075;margin-top:7px}.tool-panel+.photo-figure{max-width:480px}.tool-panel+.photo-figure img{max-height:270px}.content-card .photo-figure{margin:14px 0 22px}.content-card .photo-figure img{max-height:340px}.hub-photo{max-height:240px;overflow:hidden;margin-bottom:22px;border-radius:12px}.hub-photo .photo-figure,.hub-photo img{margin:0;max-height:240px}.hub-photo img{aspect-ratio:5/2}
.diagram-figure{margin:18px 0 14px}.diagram-figure svg{display:block;width:100%;max-width:560px;height:auto;background:#f9fcf6;border:1px solid #d9e7d6;border-radius:12px}.feature-band .diagram-figure{margin:0}.feature-band .diagram-figure svg{background:#fff;box-shadow:var(--shadow)}.feature-band .diagram-figure figcaption{padding-left:3px}.cutout-strip{display:grid;grid-template-columns:repeat(4,70px);gap:12px;margin-top:20px}.cutout-strip .photo-figure{margin:0}.cutout-strip img{width:70px;height:70px;object-fit:cover;border:1px solid var(--line);border-radius:9px}
@media(max-width:1000px){.materials-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.project-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:650px){.hero{padding:30px 0 44px}.hero-media img{object-position:center 40%}.hero:before{background:linear-gradient(180deg,rgba(3,28,20,.82) 0%,rgba(5,34,24,.76) 45%,rgba(5,33,24,.65) 100%)}.hero h1{font-size:37px}.hero-copy>p{font-size:15px;line-height:1.45}.hero-points{display:none}.hero-grid{gap:24px}.hero .field-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.hero .field label{font-size:12px}.steps-grid{grid-template-columns:1fr;gap:19px}.materials-grid,.project-grid{grid-template-columns:1fr 1fr}.card-photo img{height:115px}.materials-grid .link-card{min-height:295px}}
@media(max-width:430px){.materials-grid,.project-grid{grid-template-columns:1fr}.card-photo img{height:165px}.cutout-strip{grid-template-columns:repeat(4,1fr)}.cutout-strip img{width:100%;height:auto;aspect-ratio:1}}
@media print{.hero-media,.steps-band,.photo-figure,.hub-photo{display:none!important}.diagram-figure{break-inside:avoid}}
.footer-link-button{background:none;border:0;padding:0;text-align:left;color:inherit;font-size:14px}.footer-link-button:hover{text-decoration:underline;color:var(--lime)}
.analytics-banner{position:fixed;z-index:1000;inset:auto 20px 20px;display:flex;align-items:center;justify-content:space-between;gap:25px;max-width:940px;margin:auto;padding:20px 22px;border:1px solid #c7d7ca;border-radius:14px;background:#fff;box-shadow:0 12px 40px rgba(0,0,0,.22);color:var(--ink)}.analytics-banner strong{font-size:18px}.analytics-banner p{margin:4px 0 0;font-size:14px;color:#425852}.analytics-banner a{text-decoration:underline}.analytics-actions{display:flex;gap:10px;flex-shrink:0}.analytics-actions button{border:1px solid #9aada1;border-radius:8px;background:#fff;padding:9px 12px;font-weight:700;color:var(--ink)}.analytics-actions button:last-child{background:var(--deep);color:#fff;border-color:var(--deep)}@media(max-width:680px){.analytics-banner{inset:auto 12px 12px;display:block;padding:16px}.analytics-actions{margin-top:14px;flex-wrap:wrap}}
/* Navigation, accessible tables and purchase workflow */
.skip-link{position:absolute;left:1rem;top:-5rem;z-index:100;background:white;color:#102b2b;padding:1rem}.skip-link:focus{top:1rem}
:focus-visible{outline:3px solid #557826;outline-offset:4px}
.table-scroll{overflow-x:auto;max-width:100%}.quote-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem}fieldset{border:1px solid #cbd5c7;border-radius:12px;margin:1rem 0;padding:1rem;min-width:0}legend{font-weight:700;padding:0 .5rem}.field-grid label{display:flex;flex-direction:column;gap:.4rem}input,select{max-width:100%;padding:.65rem;border:1px solid #879b91;border-radius:6px;font:inherit}input[type=checkbox]{width:auto}.content-card nav li{margin:.4rem 0}[data-search-results]{margin-top:1.5rem}[data-quotes] button,[data-zones] button{padding:.7rem 1rem;border-radius:8px;cursor:pointer}.main-column{min-width:0}.site-header nav{flex-wrap:wrap;gap:1rem}.card-description{line-height:1.55}
@media(max-width:900px){.quote-grid{grid-template-columns:1fr}.header-inner{flex-wrap:wrap}.site-header nav{order:3;width:100%;justify-content:center}.header-action{margin-left:auto}}
@media print{.site-header,.site-footer,.skip-link,[data-export-plan],.analytics-banner{display:none!important}.content-grid{display:block}.sidebar{display:none}.content-card{break-inside:avoid}}
@media(max-width:900px){.site-header nav{display:flex;font-size:.82rem;gap:.65rem;padding-bottom:.5rem}}