@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');
:root{
  --blue:#1d4ed8;--blue2:#2563eb;--blue-soft:#eff4ff;--ink:#0f1b2d;--muted:#5b6b82;
  --line:#e4e9f2;--bg:#f6f8fc;--card:#ffffff;--radius:18px;
  --shadow:0 10px 30px rgba(15,27,45,.08);--shadow-lg:0 24px 60px rgba(15,27,45,.12);
  --accent:#1d4ed8;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Plus Jakarta Sans',system-ui,-apple-system,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
button,input,select{font-family:inherit}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.top{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:26px;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.02em;white-space:nowrap}
.brand .logo{width:36px;height:36px;flex:none}
.brand em{font-style:normal;color:var(--blue)}
.nav{display:flex;gap:4px}
.nav a{padding:9px 14px;border-radius:10px;font-weight:600;font-size:14.5px;color:var(--muted)}
.nav a:hover{background:var(--blue-soft);color:var(--blue)}
.menu{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 12px;font-size:18px;cursor:pointer}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:15px;padding:13px 24px;border-radius:14px;border:1px solid transparent;cursor:pointer;transition:.18s}
.btn.primary{background:var(--blue);color:#fff;box-shadow:0 8px 20px rgba(29,78,216,.28)}
.btn.primary:hover{background:#1a45bd;transform:translateY(-1px)}
.btn.ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn.ghost:hover{border-color:var(--blue);color:var(--blue)}
.top .btn{margin-left:auto;padding:10px 20px;font-size:14px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(180deg,#e9f0fe 0%,var(--bg) 100%);border-bottom:1px solid var(--line)}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding:72px 24px 64px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);color:var(--blue);font-weight:700;font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;padding:8px 16px;border-radius:100px;margin-bottom:22px}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 4px rgba(34,197,94,.18)}
.hero h1{font-size:clamp(38px,5.2vw,60px);line-height:1.06;letter-spacing:-.03em;font-weight:800;margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--blue)}
.lead{font-size:18px;color:var(--muted);max-width:520px;margin-bottom:30px}
.search{display:flex;background:#fff;border:1px solid var(--line);border-radius:18px;padding:7px;box-shadow:var(--shadow-lg);max-width:560px;margin-bottom:24px}
.search input{flex:1;border:0;outline:0;font-size:16px;padding:12px 18px;background:transparent;min-width:0}
.search .btn{border-radius:12px;white-space:nowrap}
.trust{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14px;font-weight:600;color:var(--muted)}
.trust span{display:inline-flex;align-items:center;gap:8px}
.trust b{color:#16a34a;font-size:16px}
.heroart{position:relative}
.heroart img{border-radius:24px;box-shadow:var(--shadow-lg);width:100%;height:420px;object-fit:cover}
.heroart .float{position:absolute;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-lg);padding:14px 18px;font-size:13px;font-weight:700}
.heroart .float small{display:block;font-weight:600;color:var(--muted);font-size:12px}
.float.f1{top:24px;left:-28px}
.float.f2{bottom:28px;right:-16px}
.float .big{font-size:22px;color:var(--blue);font-weight:800}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:-34px auto 0;position:relative;z-index:2;max-width:1180px;padding:0 24px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px 24px;display:flex;align-items:center;gap:14px}
.stat .n{font-size:30px;font-weight:800;color:var(--blue);letter-spacing:-.02em;white-space:nowrap}
.stat .t{font-size:13.5px;font-weight:600;color:var(--muted);line-height:1.35}

/* ---------- sections ---------- */
.section{padding:72px 0 8px}
.sectionhead{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px}
.sectionhead h2{font-size:clamp(26px,3.4vw,36px);letter-spacing:-.025em;font-weight:800}
.sectionhead p{color:var(--muted);font-size:16px;margin-top:6px}
.textlink{color:var(--blue);font-weight:700;font-size:15px;white-space:nowrap}
.textlink:hover{text-decoration:underline}
.catpills{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:26px}
.pill{border:1px solid var(--line);background:#fff;border-radius:100px;padding:9px 18px;font-size:14px;font-weight:700;color:var(--muted);cursor:pointer;transition:.15s}
.pill:hover{border-color:var(--blue);color:var(--blue)}
.pill.active{background:var(--ink);border-color:var(--ink);color:#fff}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.tool{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.2s;display:flex;flex-direction:column}
.tool:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:#c9d6f2}
.tool .ph{height:150px;overflow:hidden;position:relative;background:#dfe7f5}
.tool .ph img{width:100%;height:100%;object-fit:cover;transition:.3s}
.tool:hover .ph img{transform:scale(1.06)}
.tool .ph .tag{position:absolute;top:12px;left:12px;background:rgba(15,27,45,.85);color:#fff;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:5px 12px;border-radius:100px}
.tool .body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:8px;flex:1}
.tool h3{font-size:17.5px;font-weight:800;letter-spacing:-.01em}
.tool p{font-size:14px;color:var(--muted);flex:1}
.tool b{color:var(--blue);font-size:14px;font-weight:700}

/* featured band */
.band{margin:72px 0 0;background:linear-gradient(120deg,#0f1b2d 0%,#1e3a8a 100%);border-radius:28px;color:#fff;padding:56px;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;overflow:hidden}
.band .eyebrow{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2);color:#fff}
.band h2{font-size:clamp(26px,3.4vw,38px);letter-spacing:-.025em;margin-bottom:14px;font-weight:800}
.band p{color:#c3d0e8;margin-bottom:26px;font-size:16px}
.band .btn.primary{background:#fff;color:var(--blue);box-shadow:none}
.points{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.point{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:16px 18px;font-size:14px}
.point strong{display:block;font-size:14.5px;margin-bottom:2px}
.point small{color:#aebdd8}

/* guides */
.guidegrid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.guidecard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:.2s}
.guidecard:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.guidecard small{color:var(--blue);font-weight:700;font-size:12px;letter-spacing:.07em;text-transform:uppercase}
.guidecard h3{font-size:19px;margin:8px 0;font-weight:800;letter-spacing:-.01em}
.guidecard p{color:var(--muted);font-size:14.5px;margin-bottom:14px}

/* faq */
.faq{max-width:780px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden}
.faq summary{padding:18px 22px;font-weight:700;font-size:15.5px;cursor:pointer;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq details p{padding:0 22px 20px;color:var(--muted);font-size:14.5px}

/* ---------- calculator pages ---------- */
.pagehero{background:linear-gradient(180deg,#e9f0fe,var(--bg));border-bottom:1px solid var(--line);padding:44px 0 30px}
.crumb{font-size:13.5px;color:var(--muted);margin-bottom:12px;font-weight:600}
.crumb a:hover{color:var(--blue)}
.crumb b{color:var(--ink)}
.calc-title{font-size:clamp(28px,4vw,40px);font-weight:800;letter-spacing:-.025em;display:flex;align-items:center;gap:14px}
.calc-title .tic{width:52px;height:52px;border-radius:16px;display:inline-flex;align-items:center;justify-content:center;flex:none;background:var(--accent);box-shadow:0 8px 18px rgba(15,27,45,.18)}
.calc-title .tic svg{width:28px;height:28px}
.calcintro{color:var(--muted);font-size:16px;max-width:640px;margin-top:10px}
.calc-layout{display:grid;grid-template-columns:230px 1fr;gap:28px;padding:32px 0 72px;align-items:start;max-width:1180px;margin:0 auto;padding-left:24px;padding-right:24px}
.sidebar{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;position:sticky;top:96px;box-shadow:var(--shadow)}
.side-title{font-size:11.5px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);padding:8px 12px 12px}
.side-link{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:11px;font-size:14px;font-weight:600;color:var(--muted);margin-bottom:2px}
.side-link .sic{width:30px;height:30px;border-radius:9px;background:var(--blue-soft);display:inline-flex;align-items:center;justify-content:center;flex:none}
.side-link .sic svg{width:16px;height:16px}
.side-link:hover{background:var(--blue-soft);color:var(--blue)}
.side-link.active{background:var(--ink);color:#fff}
.side-link.active .sic{background:rgba(255,255,255,.16)}
.side-divider{border-top:1px solid var(--line);margin:12px 4px}
.calc-columns{display:grid;grid-template-columns:1fr 340px;gap:24px;align-items:start}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.panel h2{font-size:19px;font-weight:800;margin-bottom:18px;letter-spacing:-.01em}
.panel.results{background:linear-gradient(160deg,#0f1b2d,color-mix(in srgb,var(--accent) 45%,#0f1b2d));border:0;color:#fff;position:sticky;top:96px}
.resulthead{font-size:12px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:#cdd9f5;margin-bottom:6px;display:flex;justify-content:space-between;align-items:center}
.diagram{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.16);border-radius:14px;padding:14px;margin:14px 0 6px}
.diagram svg{width:100%;height:auto;display:block}
.diagram .dcap{text-align:center;font-size:12px;color:#aebdd8;margin-top:8px;font-weight:600}
.rrow{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:11px 0;border-bottom:1px solid rgba(255,255,255,.12);font-size:14px}
.rrow:last-of-type{border:0}
.rrow .k{color:#aebdd8;font-weight:600}
.rrow .v{font-weight:800;font-size:17px;text-align:right}
.rrow.hero .v{font-size:32px;color:#fff;letter-spacing:-.02em}
.rrow.hero .k{color:#fff;font-weight:700}
.note{font-size:13px;color:#aebdd8;margin-top:14px;line-height:1.55}
.units{display:flex;gap:8px;margin-bottom:20px}
.units button{flex:1;border:1px solid var(--line);background:#fff;border-radius:11px;padding:10px;font-weight:700;font-size:13.5px;color:var(--muted);cursor:pointer}
.units button.active{background:var(--ink);color:#fff;border-color:var(--ink)}
.fieldrow{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:700;color:var(--muted);margin-bottom:7px}
.field input,.field select{width:100%;border:1.5px solid var(--line);border-radius:12px;padding:13px 15px;font-size:16px;font-weight:600;color:var(--ink);background:#fbfcfe;transition:.15s}
.field input:focus,.field select:focus{outline:0;border-color:var(--blue);background:#fff;box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.actions{display:flex;gap:12px;margin-top:20px}
.actions .btn,.actions button{flex:1;justify-content:center}
.soft{background:var(--blue-soft);border-radius:14px;padding:18px 20px;font-size:14px;color:#33415c;margin-top:18px}
.content{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);margin-top:24px}
.content h2{font-size:21px;margin:0 0 12px;font-weight:800;letter-spacing:-.01em}
.content h3{font-size:16.5px;margin:20px 0 8px;font-weight:800}
.content p,.content li{color:var(--muted);font-size:15px}
.content ul{padding-left:20px;margin:8px 0}
.content li{margin-bottom:6px}

/* per-calculator accents */
.accent-concrete{--accent:#b45309}.accent-gravel{--accent:#78716c}.accent-mulch{--accent:#4d7c0f}
.accent-paint{--accent:#7c3aed}.accent-sqft{--accent:#2563eb}.accent-tile{--accent:#0d9488}
.accent-drywall{--accent:#475569}.accent-units{--accent:#db2777}

/* ---------- generic pages ---------- */
.page{padding:56px 0 80px;max-width:820px;margin:0 auto;padding-left:24px;padding-right:24px}
.page h1{font-size:clamp(30px,4vw,42px);letter-spacing:-.025em;margin-bottom:16px;font-weight:800}
.page p{color:var(--muted);margin-bottom:14px;font-size:16px}

/* ---------- footer ---------- */
.footer{background:#0f1b2d;color:#c3d0e8;margin-top:80px}
.footerinner{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;padding:56px 24px 40px;max-width:1180px;margin:0 auto}
.footer .brand{color:#fff;margin-bottom:12px}
.footer p{font-size:14.5px;max-width:380px}
.footer small{color:#7d8fb0;font-size:12.5px}
.footerlinks{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;align-content:start}
.footerlinks a{font-size:14px;font-weight:600;padding:6px 0}
.footerlinks a:hover{color:#fff}
.copy{border-top:1px solid rgba(255,255,255,.1);padding:20px;text-align:center;font-size:12.5px;color:#7d8fb0}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--ink);color:#fff;padding:13px 24px;border-radius:12px;font-size:14px;font-weight:600;display:none;z-index:99;box-shadow:var(--shadow-lg)}

/* ---------- responsive ---------- */
@media(max-width:1020px){
  .grid{grid-template-columns:repeat(2,1fr)}
  .hero .wrap{grid-template-columns:1fr;padding:56px 24px}
  .heroart img{height:300px}
  .float.f1{left:8px}.float.f2{right:8px}
  .band{grid-template-columns:1fr;padding:40px 28px}
  .calc-layout{grid-template-columns:1fr}
  .sidebar{position:static;display:flex;overflow-x:auto;gap:6px;padding:10px}
  .side-title,.side-divider{display:none}
  .side-link{white-space:nowrap;margin:0}
  .calc-columns{grid-template-columns:1fr}
  .panel.results{position:static}
  .stats{grid-template-columns:repeat(2,1fr)}
  .guidegrid{grid-template-columns:1fr}
}
@media(max-width:640px){
  .nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;padding:12px;border-bottom:1px solid var(--line);z-index:60}
  .nav.open{display:flex}
  .menu{display:block}
  .top .btn{display:none}
  .grid{grid-template-columns:1fr}
  .fieldrow{grid-template-columns:1fr}
  .search{flex-direction:column}
  .search .btn{justify-content:center}
  .stats{grid-template-columns:1fr 1fr;margin-top:-24px}
  .stat{flex-direction:column;align-items:flex-start;gap:2px;padding:16px 18px}
  .stat .n{font-size:26px}
  .points{grid-template-columns:1fr}
  .actions{flex-direction:column}
  .actions .btn{padding:16px;font-size:16px}
  .panel{padding:22px}
  .footerinner{grid-template-columns:1fr}
  .section{padding:52px 0 8px}
  .field input,.field select{font-size:16px;padding:14px 15px}
}

/* ---------- legacy page compatibility (v9 markup) ---------- */
.mark{width:36px;height:36px;border-radius:10px;background:var(--blue);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:20px;flex:none}
.pagehero{background:linear-gradient(180deg,#e9f0fe,var(--bg));border-bottom:1px solid var(--line);padding:52px 0 36px}
.pagehero h1{font-size:clamp(30px,4vw,44px);letter-spacing:-.025em;font-weight:800}
.pagehero p{color:var(--muted);max-width:660px;margin-top:10px;font-size:16px}
.notice{background:#fff8f1;border:1px solid #ffdfc5;color:#805026;border-radius:12px;padding:14px 16px;font-size:13.5px;margin-top:14px;line-height:1.6}
.alsosee{background:#f4f8ff;border:1px solid #d7e6ff;border-radius:12px;padding:12px 16px;font-size:14px;margin:14px 0;line-height:1.6}
.alsosee a{font-weight:600}
/* results panel: keep light so existing SVG diagrams render correctly */
.panel.results{background:#fff;border:1px solid var(--line);border-top:4px solid var(--accent)}
.resulthead h2{font-size:19px;color:var(--ink);margin:0;letter-spacing:0;text-transform:none}
.resulthead .pill{font-size:11px;color:#15803d;background:#e6f7ee;border-radius:99px;padding:6px 10px;font-weight:700;letter-spacing:0;text-transform:none;border:0}
.diagram{background:#fbfcfe;border:1px solid var(--line)}
.diagram .dcap{color:var(--muted)}
.panel.results .stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:6px 0 0}
.panel.results .stat{background:var(--blue-soft);border:1px solid var(--line);border-radius:10px;padding:12px 8px;text-align:center;display:block;box-shadow:none}
.panel.results .stat strong{display:block;color:var(--ink);font-size:clamp(15px,1.6vw,21px);letter-spacing:-.02em}
.panel.results .stat small{display:block;color:var(--muted);font-size:10.5px;margin-top:5px;font-weight:600}
.formula{display:flex;gap:12px;font-size:12.5px;padding:9px 0;border-top:1px dashed var(--line);margin-top:2px;line-height:1.5}
.formula b{color:var(--accent);font-size:10.5px;text-transform:uppercase;letter-spacing:.07em;white-space:nowrap;padding-top:2px}
.formula span{color:var(--muted)}
.guide-steps{margin:14px 0;padding:0;list-style:none;counter-reset:step}
.guide-steps li{counter-increment:step;position:relative;padding:10px 0 10px 44px;color:var(--muted);font-size:15px;border-bottom:1px dashed var(--line)}
.guide-steps li:last-child{border:0}
.guide-steps li::before{content:counter(step);position:absolute;left:0;top:10px;width:30px;height:30px;border-radius:50%;background:var(--blue-soft);color:var(--blue);font-weight:800;font-size:14px;display:flex;align-items:center;justify-content:center}
.example{background:#fbfcfe;border:1px solid var(--line);border-left:4px solid var(--blue);border-radius:0 12px 12px 0;padding:16px 20px;margin:16px 0;font-size:14.5px;color:var(--muted)}
.example b{color:var(--ink)}
.guide-cta{display:inline-flex;align-items:center;gap:8px;margin-top:14px}
.guideimg{border-radius:14px;overflow:hidden;margin:16px 0;border:1px solid var(--line)}
.guideimg img{width:100%;height:220px;object-fit:cover}

.faq-section{margin:26px 0 6px}
.faq-section h2{margin-bottom:14px}