:root {
  --bg: #ffffff;
  --bg-alt: #f7f6f2;
  --bg-alt2: #eeece5;
  --ink: #1d2733;
  --navy: #13365c;
  --muted: #5c6672;
  --line: #dedbd2;
  --card: #ffffff;
  --sun: #f39c1f;
  --sun-ink: #1d1d1d;
  --sun-soft: #fff4e0;
  --good: #2e7d32;
  --radius: 3px;
  --font: "Source Sans 3", "Segoe UI", Arial, sans-serif;
  color-scheme: light;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.55 var(--font); }
a { color: var(--navy); }
img, svg { max-width: 100%; }
img { display: block; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
h1, h2, h3 { color: var(--navy); line-height: 1.2; margin: 0 0 12px; font-weight: 700; }
h1 { font-size: clamp(2rem, 4.4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 2.8vw, 2.1rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 12px; }
.muted, .fine { color: var(--muted); }
.fine { font-size: 0.8125rem; line-height: 1.45; }
.fine a { color: inherit; }

/* buttons + inputs */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; border-radius: var(--radius); padding: 13px 22px; font: inherit; font-weight: 700; cursor: pointer; text-decoration: none; background: var(--sun); color: var(--sun-ink); white-space: nowrap; }
.btn:hover { background: #e58c0c; }
.btn.secondary { background: var(--navy); color: #fff; }
.btn.secondary:hover { background: #0d2845; }
.btn.ghost { background: #fff; color: var(--navy); border: 1px solid var(--line); }
.btn.ghost:hover { border-color: var(--navy); }
.btn.small { padding: 8px 14px; font-size: 0.875rem; }
input, select, textarea { font: inherit; color: var(--ink); background: #fff; border: 1px solid #c9c5ba; border-radius: var(--radius); padding: 12px 14px; }
:is(input, select, textarea, .btn, a, button):focus-visible { outline: 3px solid var(--sun); outline-offset: 2px; }
label { font-weight: 600; font-size: 0.9375rem; }

/* top strip + nav */
.topbar { background: var(--navy); color: #fff; font-size: 0.875rem; text-align: center; padding: 7px 20px; }
.nav { position: sticky; top: 0; z-index: 20; background: #fff; border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; gap: 24px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.125rem; text-decoration: none; color: var(--navy); }
.brand svg { width: 40px; height: 40px; flex: none; }
.brand .roof { fill: currentColor; stroke: var(--bg); }
.brand-sub { font-weight: 400; color: var(--muted); }
.nav-links { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.nav-links a { text-decoration: none; color: var(--ink); font-weight: 600; font-size: 0.9375rem; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--navy); text-decoration: underline; text-underline-offset: 6px; }
.nav-links .btn, .nav-links .btn:hover { color: var(--sun-ink); text-decoration: none; }
.menu-btn { display: none; margin-left: auto; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 6px 12px; color: var(--ink); font: inherit; }
@media (max-width: 760px) {
  .menu-btn { display: block; }
  .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0; background: #fff; border-bottom: 1px solid var(--line); padding: 8px 20px 16px; }
  .nav-links a { padding: 10px 0; }
  .nav.open .nav-links { display: flex; }
}

/* address form */
.addr { display: flex; gap: 8px; max-width: 560px; }
.addr input { flex: 1; min-width: 0; }
.consent-line { margin-top: 10px; max-width: 560px; }
@media (max-width: 520px) { .addr { flex-direction: column; } }

/* photo hero */
.hero { position: relative; color: #fff; background: #1b2a3a center / cover no-repeat; }
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgb(12 26 44 / 88%) 0%, rgb(12 26 44 / 70%) 50%, rgb(12 26 44 / 25%) 100%); }
.hero .wrap { position: relative; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; padding-block: 72px; }
.hero h1 { color: #fff; }
.hero .lede { color: #e6ebf1; }
.hero ul { list-style: none; padding: 0; margin: 0 0 8px; display: grid; gap: 6px; }
.hero li::before { content: "✓"; color: var(--sun); font-weight: 700; margin-right: 10px; }
.form-box { background: #fff; color: var(--ink); border-top: 5px solid var(--sun); padding: 28px; }
.form-box h2 { font-size: 1.375rem; margin-bottom: 6px; }
.form-box .addr { flex-direction: column; }
.form-box .badges { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 14px; font-size: 0.8125rem; color: var(--muted); }
.lede { font-size: 1.1875rem; color: var(--muted); max-width: 36em; margin-bottom: 22px; }
.eyebrow { display: inline-block; font-weight: 700; font-size: 0.8125rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--sun); margin-bottom: 10px; }
@media (max-width: 900px) { .hero .wrap { grid-template-columns: 1fr; padding-block: 48px; } }

/* stat strip */
.stat-strip { background: var(--bg-alt); border-bottom: 1px solid var(--line); }
.stat-strip .wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat-strip div { padding: 22px 16px; border-left: 1px solid var(--line); }
.stat-strip div:first-child { border-left: 0; }
.stat-strip strong { display: block; font-size: 1.75rem; color: var(--navy); font-variant-numeric: tabular-nums; line-height: 1.2; }
.stat-strip span { font-size: 0.875rem; color: var(--muted); }
@media (max-width: 760px) { .stat-strip .wrap { grid-template-columns: 1fr 1fr; } .stat-strip div:nth-child(3) { border-left: 0; } }

/* sections */
.section { padding: 72px 0; }
.section.alt { background: var(--bg-alt); border-block: 1px solid var(--line); }
.section-head { max-width: 760px; margin-bottom: 32px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 860px) { .grid3, .grid2 { grid-template-columns: 1fr; } .grid4 { grid-template-columns: 1fr 1fr; } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.card h3 { margin-top: 8px; }
.photo-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.photo-card img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.photo-card div { padding: 20px 22px 22px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.split img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--radius); }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; gap: 24px; } }
.step { position: relative; padding-top: 30px; }
.step-n { position: absolute; top: -1px; left: -1px; background: var(--sun); color: var(--sun-ink); font-weight: 700; padding: 4px 14px; font-size: 0.875rem; }
.checks { list-style: none; padding: 0; display: grid; gap: 8px; }
.checks li::before { content: "✓"; color: var(--good); font-weight: 700; margin-right: 10px; }

/* tabs (landing preview + planner tools) */
.tabs { display: flex; flex-wrap: wrap; border-bottom: 2px solid var(--navy); }
.tabs button { font: inherit; font-weight: 600; font-size: 0.9375rem; background: #fff; color: var(--navy); border: 1px solid var(--line); border-bottom: 0; margin-right: 4px; padding: 10px 18px; cursor: pointer; border-radius: var(--radius) var(--radius) 0 0; }
.tabs button[aria-selected="true"] { background: var(--navy); color: #fff; border-color: var(--navy); }
.tab-panel { border: 1px solid var(--line); border-top: 0; background: #fff; padding: 24px; }
.preview { display: grid; grid-template-columns: 1.2fr 1fr; gap: 32px; align-items: center; }
.preview img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
@media (max-width: 860px) { .preview { grid-template-columns: 1fr; } .tabs button { flex: 1 1 45%; margin: 0; } }

/* calculator */
.calc { display: grid; grid-template-columns: 1fr 1.3fr; border: 1px solid var(--line); background: #fff; }
.calc form { padding: 28px; display: grid; gap: 14px; align-content: start; background: var(--bg-alt); border-right: 1px solid var(--line); }
.calc form label { display: grid; gap: 6px; }
.calc-out { padding: 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; align-content: start; }
.calc-out .kpi { border: 1px solid var(--line); }
.calc-out p { grid-column: 1 / -1; margin: 4px 0 0; }
@media (max-width: 760px) { .calc { grid-template-columns: 1fr; } .calc form { border-right: 0; border-bottom: 1px solid var(--line); } }

/* KPI blocks */
.kpi { background: #fff; border: 1px solid var(--line); border-top: 3px solid var(--sun); padding: 14px 16px; }
.kpi strong { display: block; font-size: 1.5rem; color: var(--navy); font-variant-numeric: tabular-nums; line-height: 1.2; white-space: nowrap; }
.kpi span { font-size: 0.8125rem; color: var(--muted); }
.kpis { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; margin: 0 0 20px; }
@media (max-width: 1000px) { .kpis { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 520px) { .kpis { grid-template-columns: 1fr 1fr; } .kpi strong { font-size: 1.25rem; } }

.faq details { border: 1px solid var(--line); background: #fff; margin-bottom: 8px; padding: 16px 20px; }
.faq summary { font-weight: 700; color: var(--navy); cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::after { content: "+"; font-weight: 400; font-size: 1.25rem; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 10px 0 0; color: var(--muted); }
.cta-band { position: relative; color: #fff; background: #1b2a3a center / cover no-repeat; padding: 56px 48px; display: grid; gap: 14px; }
.cta-band::before { content: ""; position: absolute; inset: 0; background: rgb(12 26 44 / 78%); }
.cta-band > * { position: relative; }
.cta-band h2 { color: #fff; }
.cta-band .lede { color: #e6ebf1; margin: 0; }
.cta-band .fine, .cta-band .fine a { color: #cfd7e1; }
@media (max-width: 600px) { .cta-band { padding: 32px 20px; } }

/* tables */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
th { background: var(--bg-alt); color: var(--navy); font-weight: 700; font-size: 0.8125rem; text-transform: uppercase; letter-spacing: 0.04em; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tbody tr:hover { background: #fbfaf7; }
.table-wrap { overflow-x: auto; background: #fff; border: 1px solid var(--line); }
.bar-cell { width: 28%; }
.bar-cell i { display: block; height: 10px; background: var(--sun); }

/* content pages */
.page-head { padding: 48px 0 32px; background: var(--bg-alt); border-bottom: 1px solid var(--line); margin-bottom: 40px; }
.legal { padding: 48px 0 0; }
.prose { max-width: 760px; }
.prose h2 { font-size: 1.5rem; margin-top: 32px; }
.prose li { margin-bottom: 6px; }
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 24px 0 0; }
@media (max-width: 760px) { .stat-row { grid-template-columns: 1fr 1fr; } }

/* footer */
.footer { background: var(--navy); color: #c9d3df; margin-top: 72px; padding: 48px 0 32px; font-size: 0.9375rem; }
.footer .wrap { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 24px; }
.footer .brand { display: flex; color: #fff; }
.footer .brand .roof { stroke: var(--navy); }
.footer .brand-sub { color: #c9d3df; }
.footer h4 { color: #fff; margin: 0 0 10px; font-size: 0.9375rem; }
.footer a { display: block; text-decoration: none; padding: 3px 0; color: #c9d3df; }
.footer a:hover { color: #fff; }
.footer .fine { color: #aab6c5; }
@media (max-width: 760px) { .footer .wrap { grid-template-columns: 1fr 1fr; } }

/* planner */
.planner-head { padding: 28px 0 22px; background: var(--bg-alt); border-bottom: 1px solid var(--line); margin-bottom: 24px; }
.planner-head h1 { font-size: clamp(1.6rem, 3.4vw, 2.2rem); }
.status { min-height: 1.5em; color: var(--muted); margin: 8px 0 0; }
.empty { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; padding: 8px 0 48px; }
.empty img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
@media (max-width: 860px) { .empty { grid-template-columns: 1fr; } }
.addr-line { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; flex-wrap: wrap; margin-bottom: 14px; }
.addr-line strong { font-size: 1.25rem; color: var(--navy); }
.badge { font-size: 0.8125rem; color: var(--muted); border: 1px solid var(--line); padding: 2px 10px; background: #fff; }
.result-main { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 24px; align-items: start; }
@media (max-width: 960px) { .result-main { grid-template-columns: 1fr; } }
.map { aspect-ratio: 4 / 3; overflow: hidden; background: var(--bg-alt); border: 1px solid var(--line); }
.legend { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-top: 10px; font-size: 0.8125rem; color: var(--muted); }
.legend .swatch { display: inline-block; width: 40px; height: 10px; vertical-align: middle; margin-right: 6px; background: linear-gradient(90deg, #122046, #468cff); }
.schematic { width: 100%; height: 100%; display: block; }
.schematic .ground { fill: #cdd6c2; } .schematic .roof { fill: #8a8f99; }
.schematic polygon { fill: none; stroke: #e8eef8; stroke-width: 0.05; stroke-dasharray: 0.15 0.1; }
.schematic polygon.on { stroke-dasharray: none; }
.side { display: grid; gap: 16px; }
.panel-box { background: #fff; border: 1px solid var(--line); }
.panel-box > h2 { font-size: 1rem; margin: 0; padding: 10px 16px; background: var(--bg-alt); border-bottom: 1px solid var(--line); }
.panel-box > div, .panel-box > form { padding: 16px; }
.size-row { display: flex; gap: 12px; align-items: center; }
.size-row input[type="number"] { width: 92px; text-align: center; font-weight: 700; padding: 8px; }
.size-row input[type="range"] { flex: 1; accent-color: var(--sun); }
.quick { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.offset-bar { height: 12px; background: var(--bg-alt2); overflow: hidden; margin: 10px 0 4px; }
.offset-bar i { display: block; height: 100%; background: var(--sun); transition: width .2s; }
.inputs2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.inputs2 label { display: grid; gap: 4px; font-size: 0.8125rem; }
.inputs2 input { padding: 9px 10px; }
.bom { display: grid; gap: 0; border: 1px solid var(--line); }
.bom-item { display: grid; grid-template-columns: 56px 56px 1fr auto; gap: 14px; align-items: center; padding: 12px 14px; border-bottom: 1px solid var(--line); }
.bom-item:last-child { border-bottom: 0; }
.bom-item .qty { font-weight: 700; font-size: 1.25rem; text-align: center; background: var(--navy); color: #fff; padding: 6px 0; }
.bom-item img { width: 56px; height: 56px; object-fit: cover; border: 1px solid var(--line); background: #fff; }
.equip-img { display: block; width: 120px; height: 120px; object-fit: cover; border: 1px solid var(--line); background: #fff; }
.bom-item .name { font-weight: 600; }
.bom-item small { display: block; color: var(--muted); font-size: 0.8125rem; }
.bom-item a { font-size: 0.875rem; font-weight: 600; }
@media (max-width: 520px) { .bom-item { grid-template-columns: 40px 40px 1fr; gap: 4px 10px; } .bom-item img { width: 40px; height: 40px; } .bom-item a { grid-column: 3; } .bom-item > span:empty { display: none; } }
.locked .blur { filter: blur(6px); user-select: none; pointer-events: none; }
.gate { display: grid; gap: 10px; }
.gate .row { display: flex; gap: 8px; }
.gate .row input { flex: 1; min-width: 0; }
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; font-size: 0.8125rem; color: var(--muted); }
.check input { margin-top: 3px; flex: none; width: 16px; height: 16px; }
.report-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.report-stats div { background: var(--sun-soft); padding: 12px; }
.report-stats strong { display: block; font-size: 1.25rem; color: var(--navy); font-variant-numeric: tabular-nums; }
.report-stats span { font-size: 0.75rem; color: var(--muted); }
.quote { display: grid; gap: 10px; }
.quote label { display: grid; gap: 4px; }
.thanks { font-weight: 700; }

/* planner tools */
.tools { margin: 32px 0 0; }
.tools > h2 { margin-bottom: 16px; }
.tool-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 24px; align-items: start; }
.tool-grid > * { min-width: 0; }
@media (max-width: 860px) { .tool-grid { grid-template-columns: 1fr; } }
.chart { display: flex; align-items: flex-end; gap: 1px; height: 220px; padding: 0 0 0 2px; border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); position: relative; }
#savings-chart { gap: 4px; }
.chart button, .chart i { flex: 1; min-width: 0; background: #b7c3d3; border: 0; padding: 0; cursor: pointer; }
.chart i { cursor: default; }
.chart .on { background: var(--navy); }
.chart .pick { background: var(--sun); }
.chart .neg { background: #c9c5ba; }
.chart .line { position: absolute; left: 0; right: 0; border-top: 2px dashed var(--good); pointer-events: none; }
.chart .line span { position: absolute; left: 4px; top: -22px; font-size: 0.75rem; color: var(--good); font-weight: 700; background: #fff; padding: 0 4px; }
.chart-axis { display: flex; justify-content: space-between; font-size: 0.75rem; color: var(--muted); margin-top: 6px; }
.key { display: flex; gap: 16px; flex-wrap: wrap; font-size: 0.8125rem; color: var(--muted); margin-top: 10px; }
.key i { display: inline-block; width: 12px; height: 12px; vertical-align: -1px; margin-right: 6px; }
.locked-note { text-align: center; padding: 32px 16px; background: var(--bg-alt); border: 1px dashed var(--line); }