:root{
  --blue:#2463eb;--blue-dark:#1746b5;--green:#20b486;--navy:#10213f;--text:#24324a;
  --muted:#6b7890;--line:#dfe6f0;--soft:#f4f7fb;--white:#fff;--shadow:0 14px 40px rgba(16,33,63,.10)
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--text);background:var(--white);line-height:1.6}a{color:inherit;text-decoration:none}img{max-width:100%}.container{width:min(1160px,calc(100% - 32px));margin:auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.nav{height:72px;display:flex;align-items:center;gap:26px}.brand{display:flex;align-items:center;gap:12px;font-weight:850;color:var(--navy);font-size:1.1rem}.brand-mark{display:grid;grid-template-columns:repeat(2,13px);gap:4px;padding:7px;border-radius:12px;background:var(--soft)}.brand-mark i{width:13px;height:13px;border-radius:4px;display:block}.brand-mark i:nth-child(1){background:var(--blue)}.brand-mark i:nth-child(2){background:var(--green)}.brand-mark i:nth-child(3){background:#0d356f}.brand-mark i:nth-child(4){background:#54c7ae}.nav-links{margin-left:auto;display:flex;align-items:center;gap:22px;font-weight:650;color:#53617a}.nav-links a:hover,.nav-links a.active{color:var(--blue)}.menu-btn{display:none;margin-left:auto;border:0;background:transparent;font-size:1.6rem}
.hero{background:linear-gradient(145deg,#f7fbff 0%,#edf4ff 52%,#f6fffb 100%);padding:92px 0 82px;border-bottom:1px solid var(--line);overflow:hidden}.hero-inner{text-align:center;position:relative}.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border:1px solid #cfe0ff;border-radius:999px;color:var(--blue-dark);background:#fff;font-weight:750;font-size:.88rem}.hero h1{font-size:clamp(2.7rem,6vw,5.2rem);line-height:1.02;letter-spacing:-.055em;margin:22px auto 18px;max-width:900px;color:var(--navy)}.hero h1 span{color:var(--blue)}.hero p{font-size:1.16rem;color:var(--muted);max-width:700px;margin:0 auto 30px}.search-wrap{position:relative;max-width:720px;margin:0 auto}.search-box{width:100%;height:68px;border:1px solid #c9d7ea;border-radius:18px;padding:0 62px 0 24px;font-size:1.05rem;box-shadow:var(--shadow);outline:none}.search-box:focus{border-color:var(--blue);box-shadow:0 0 0 4px rgba(36,99,235,.12),var(--shadow)}.search-icon{position:absolute;right:21px;top:50%;transform:translateY(-50%);font-size:1.4rem}.search-results{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);text-align:left;overflow:hidden;z-index:20}.search-results.show{display:block}.search-result{display:block;padding:14px 18px;border-bottom:1px solid var(--line)}.search-result:last-child{border:0}.search-result:hover{background:var(--soft)}.popular-searches{margin-top:18px;color:var(--muted);font-size:.92rem}.popular-searches a{display:inline-block;margin:5px 5px 0;padding:6px 11px;background:#fff;border:1px solid var(--line);border-radius:999px;color:#4d5b73;font-weight:650}
section{padding:78px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px}.section-head h2{font-size:clamp(2rem,3.4vw,3rem);line-height:1.1;letter-spacing:-.035em;color:var(--navy);margin:0}.section-head p{color:var(--muted);max-width:620px;margin:8px 0 0}.text-link{color:var(--blue);font-weight:800}.grid{display:grid;gap:20px}.cards-4{grid-template-columns:repeat(4,1fr)}.cards-3{grid-template-columns:repeat(3,1fr)}.tool-card,.category-card,.feature-card{border:1px solid var(--line);border-radius:20px;background:#fff;padding:24px;transition:.2s ease;position:relative}.tool-card:hover,.category-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#c7d4e8}.icon{width:48px;height:48px;display:grid;place-items:center;border-radius:14px;background:#edf4ff;font-size:1.4rem;margin-bottom:18px}.tool-card h3,.category-card h3{margin:0 0 6px;color:var(--navy);font-size:1.08rem}.tool-card p,.category-card p{margin:0;color:var(--muted);font-size:.94rem}.category-card{background:linear-gradient(180deg,#fff,#fafcff)}.soft{background:var(--soft)}
.featured{display:grid;grid-template-columns:1.05fr .95fr;border-radius:28px;overflow:hidden;background:var(--navy);color:#fff;box-shadow:var(--shadow)}.featured-copy{padding:50px}.featured-copy .eyebrow{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);color:#dce8ff}.featured h2{font-size:2.65rem;line-height:1.05;margin:18px 0 14px}.featured p{color:#c9d4e8}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:12px;font-weight:800;border:0;cursor:pointer}.btn-primary{background:var(--blue);color:#fff}.btn-primary:hover{background:var(--blue-dark)}.btn-light{background:#fff;color:var(--navy)}.featured-preview{padding:34px;background:linear-gradient(145deg,#2463eb,#20b486);display:grid;align-items:center}.mini-card{background:#fff;color:var(--text);border-radius:22px;padding:24px;box-shadow:0 18px 40px rgba(0,0,0,.18)}.mini-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.mini-field{padding:12px;border:1px solid var(--line);border-radius:10px;color:#758196}.mini-result{margin-top:14px;background:var(--soft);padding:18px;border-radius:12px}.mini-result strong{font-size:1.6rem;color:var(--navy)}
.trust-card{text-align:center}.trust-card .icon{margin:0 auto 18px}.trust-card h3{color:var(--navy);margin:0 0 6px}.trust-card p{color:var(--muted);margin:0}.site-footer{background:#0e1a31;color:#c8d1e1;padding:58px 0 24px}.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:38px}.site-footer h4{color:#fff;margin:0 0 14px}.site-footer a{display:block;margin:8px 0;color:#c8d1e1}.footer-bottom{margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:20px;font-size:.9rem}
.page-hero{padding:60px 0 36px;background:var(--soft);border-bottom:1px solid var(--line)}.page-hero h1{margin:0 0 10px;color:var(--navy);font-size:clamp(2.3rem,5vw,4rem);letter-spacing:-.045em;line-height:1.05}.page-hero p{margin:0;color:var(--muted);max-width:760px}.calculator-layout{display:grid;grid-template-columns:minmax(0,760px) 1fr;gap:30px;align-items:start}.calc-card,.content-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:0 10px 28px rgba(16,33,63,.06)}.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.field label{display:block;font-weight:750;margin-bottom:7px;color:var(--navy)}.field input,.field select,.field textarea{width:100%;height:48px;border:1px solid #cfd9e7;border-radius:11px;padding:0 13px;font:inherit;outline:none;background:#fff}.field textarea{height:130px;padding-top:12px}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(36,99,235,.1)}.result-panel{margin-top:22px;border-radius:16px;background:var(--soft);padding:20px}.result-panel h3{margin:0 0 10px;color:var(--navy)}.result-value{font-size:2rem;font-weight:900;color:var(--blue);line-height:1.1}.result-list{display:grid;gap:8px;margin-top:14px}.result-row{display:flex;justify-content:space-between;gap:18px;padding-top:8px;border-top:1px solid #dce4ef}.sidebar-list a{display:block;padding:11px 0;border-bottom:1px solid var(--line);font-weight:700;color:#41506a}.article h2{color:var(--navy);margin-top:0}.article h3{color:var(--navy);margin-top:30px}.article p,.article li{color:#53617a}.notice{padding:14px 16px;border-left:4px solid var(--blue);background:#edf4ff;border-radius:8px;color:#385070}.legal{max-width:860px}.legal h2{margin-top:32px;color:var(--navy)}
@media(max-width:900px){.cards-4{grid-template-columns:repeat(2,1fr)}.cards-3{grid-template-columns:1fr}.featured{grid-template-columns:1fr}.calculator-layout{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.nav-links{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;padding:18px 16px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:flex-start}.nav-links.open{display:flex}.menu-btn{display:block}}
@media(max-width:600px){.container{width:min(100% - 22px,1160px)}.hero{padding:65px 0}.hero h1{font-size:2.75rem}.cards-4{grid-template-columns:1fr}.calc-grid,.mini-row{grid-template-columns:1fr}.featured-copy{padding:32px 24px}.featured h2{font-size:2.15rem}.section-head{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr}.footer-bottom{flex-direction:column}.calc-card,.content-card{padding:21px}}

/* Mortgage calculator v1.1 */
.mortgage-hero{background:linear-gradient(145deg,#f4f8ff,#eef5ff 58%,#effcf8)}
.calculator-section{padding-top:42px}.mortgage-layout{grid-template-columns:minmax(0,790px) minmax(260px,1fr)}
.calc-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:24px}.calc-card-head h2{margin:0;color:var(--navy);font-size:1.45rem}.calc-card-head p{margin:4px 0 0;color:var(--muted)}
.btn-secondary{background:var(--soft);color:var(--navy);border:1px solid var(--line)}.btn-secondary:hover{background:#e8eef7}.btn-light-outline{background:#fff;color:var(--navy);border:1px solid var(--line)}.btn-light-outline:hover{background:var(--soft)}
.input-prefix,.input-suffix{position:relative}.input-prefix span,.input-suffix span{position:absolute;top:50%;transform:translateY(-50%);color:#68758b;font-weight:750;pointer-events:none}.input-prefix span{left:14px}.input-prefix input{padding-left:30px}.input-suffix span{right:14px}.input-suffix input{padding-right:38px}.field small{display:block;margin-top:6px;color:var(--muted);font-size:.8rem}.field-full{grid-column:1/-1}.form-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
.mortgage-results{padding:0;overflow:hidden;background:#fff;border:1px solid var(--line)}.monthly-total{padding:25px;background:linear-gradient(135deg,var(--navy),#173664);color:#fff}.monthly-total span,.monthly-total small{display:block;color:#cdd9ec}.monthly-total strong{display:block;font-size:clamp(2.25rem,6vw,3.4rem);line-height:1.05;margin:7px 0}.payment-breakdown{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-bottom:1px solid var(--line)}.payment-breakdown div{padding:17px;border-right:1px solid var(--line);border-top:1px solid var(--line)}.payment-breakdown div:nth-child(3n){border-right:0}.payment-breakdown span,.loan-summary-grid span{display:block;color:var(--muted);font-size:.82rem}.payment-breakdown strong,.loan-summary-grid strong{display:block;color:var(--navy);margin-top:3px}.loan-summary-grid{display:grid;grid-template-columns:repeat(4,1fr);padding:20px;gap:14px}.loan-summary-grid div{padding:10px 12px;background:var(--soft);border-radius:12px}
.amortization-card{margin-top:24px}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px}.amortization-table{width:100%;border-collapse:collapse;min-width:610px}.amortization-table th,.amortization-table td{text-align:right;padding:13px 15px;border-bottom:1px solid var(--line)}.amortization-table th:first-child,.amortization-table td:first-child{text-align:left}.amortization-table th{background:var(--soft);color:var(--navy);font-size:.86rem}.amortization-table tbody tr:last-child td{border-bottom:0}.amortization-table tbody tr:hover{background:#fafcff}.mortgage-guide{margin-top:24px}
.mortgage-sidebar{display:grid;gap:20px}.sticky-card{position:sticky;top:94px}.sidebar-stat{display:flex;justify-content:space-between;gap:15px;padding:13px 0;border-bottom:1px solid var(--line)}.sidebar-stat:last-child{border-bottom:0}.sidebar-stat span{color:var(--muted)}.sidebar-stat strong{color:var(--navy)}.site-footer .footer-bottom div{display:flex;gap:18px}.site-footer .footer-bottom a{margin:0}
@media(max-width:900px){.mortgage-layout{grid-template-columns:1fr}.sticky-card{position:static}.payment-breakdown{grid-template-columns:repeat(2,1fr)}.payment-breakdown div:nth-child(3n){border-right:1px solid var(--line)}.payment-breakdown div:nth-child(2n){border-right:0}.loan-summary-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.calc-card-head{flex-direction:column}.calc-card-head .btn{width:100%}.form-actions .btn{width:100%}.payment-breakdown{grid-template-columns:1fr}.payment-breakdown div,.payment-breakdown div:nth-child(3n){border-right:0}.loan-summary-grid{grid-template-columns:1fr}.monthly-total{padding:22px}.mortgage-results{margin-left:-2px;margin-right:-2px}}
@media print{.site-header,.page-hero,.mortgage-sidebar,.form-actions,.mortgage-guide,.site-footer,.calc-card-head .btn{display:none!important}body{background:#fff}.calculator-section{padding:0}.calculator-layout{display:block}.calc-card,.content-card{box-shadow:none;border:1px solid #bbb}.calc-card form{display:none}.amortization-card{break-before:page}.table-wrap{overflow:visible}.amortization-table{min-width:0;font-size:11px}}

/* Loan calculator v1.2 */
.loan-hero{background:linear-gradient(145deg,#f5f9ff,#eef5ff 58%,#f2fbf8)}
.loan-result-grid{grid-template-columns:repeat(4,1fr)}
.loan-result-grid div:nth-child(3n){border-right:1px solid var(--line)}
.loan-result-grid div:nth-child(4n){border-right:0}
@media(max-width:900px){.loan-result-grid{grid-template-columns:repeat(2,1fr)}.loan-result-grid div:nth-child(3n){border-right:1px solid var(--line)}.loan-result-grid div:nth-child(2n){border-right:0}}
@media(max-width:600px){.loan-result-grid{grid-template-columns:1fr}.loan-result-grid div,.loan-result-grid div:nth-child(3n){border-right:0}}

/* Concrete calculator v1.3 */
.concrete-hero{background:linear-gradient(145deg,#f5f9ff,#edf6ff 55%,#eefbf5)}
.concrete-layout{grid-template-columns:minmax(0,800px) minmax(260px,1fr)}
.shape-tabs{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:6px;background:var(--soft);border-radius:15px;margin-bottom:24px}
.shape-tab{border:0;background:transparent;border-radius:10px;padding:12px 8px;font:inherit;font-weight:800;color:#5d6a80;cursor:pointer}
.shape-tab:hover{background:#fff;color:var(--blue)}.shape-tab.active{background:#fff;color:var(--blue);box-shadow:0 4px 14px rgba(16,33,63,.09)}
.dimension-input{display:grid;grid-template-columns:1fr 82px}.dimension-input input{border-radius:11px 0 0 11px}.dimension-input select{border-left:0;border-radius:0 11px 11px 0;background:var(--soft);font-weight:750}
.shape-field[hidden]{display:none}.calc-error{min-height:24px;margin-top:12px;color:#b42318;font-weight:700}
.concrete-results{padding:0;overflow:hidden}.concrete-main-result{padding:25px;background:linear-gradient(135deg,#10213f,#225f78);color:#fff}.concrete-main-result span,.concrete-main-result small{display:block;color:#d5e5eb}.concrete-main-result strong{display:block;font-size:clamp(2.3rem,6vw,3.5rem);line-height:1.05;margin:7px 0}
.concrete-result-grid{grid-template-columns:repeat(4,1fr)}.concrete-result-grid div:nth-child(3n){border-right:1px solid var(--line)}.concrete-result-grid div:nth-child(4n){border-right:0}
.concrete-summary-grid{grid-template-columns:repeat(2,1fr)}.concrete-sidebar{display:grid;gap:20px}.concrete-guide{margin-top:24px}.formula-box{padding:16px 18px;background:#eef6ff;border:1px solid #d3e3fb;border-radius:12px;color:#294a76;margin:18px 0}.concrete-guide details{border-top:1px solid var(--line);padding:14px 0}.concrete-guide summary{cursor:pointer;font-weight:800;color:var(--navy)}.concrete-guide details p{margin-bottom:0}.concrete-tip{border-left:4px solid var(--green)}.concrete-tip p{margin-bottom:0;color:var(--muted)}
@media(max-width:900px){.concrete-layout{grid-template-columns:1fr}.concrete-result-grid{grid-template-columns:repeat(2,1fr)}.concrete-result-grid div:nth-child(3n){border-right:1px solid var(--line)}.concrete-result-grid div:nth-child(2n){border-right:0}}
@media(max-width:600px){.shape-tabs{grid-template-columns:repeat(2,1fr)}.concrete-result-grid,.concrete-summary-grid{grid-template-columns:1fr}.concrete-result-grid div,.concrete-result-grid div:nth-child(3n){border-right:0}.dimension-input{grid-template-columns:1fr 76px}}
@media print{.shape-tabs,.concrete-sidebar,.concrete-guide,.calc-error{display:none!important}.concrete-results{border:1px solid #bbb}.concrete-main-result{background:#fff!important;color:#000!important}.concrete-main-result span,.concrete-main-result small{color:#444!important}}
.gravel-hero{background:linear-gradient(145deg,#f7f9f4,#eef5e8 55%,#edf6ff)}
.gravel-main-result{background:linear-gradient(135deg,#263d32,#4c745e)}

/* Shared calculator framework v2.1 */
.breadcrumb{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-bottom:16px;color:var(--muted);font-size:.9rem}.breadcrumb a{color:var(--blue);font-weight:750}.calc-kicker{display:block;color:var(--blue);font-size:.78rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase;margin-bottom:5px}.btn-soft{background:var(--soft);color:var(--navy)}.btn-outline{background:#fff;color:var(--navy);border:1px solid #cdd8e7}.btn-outline:hover,.btn-soft:hover{border-color:var(--blue);color:var(--blue)}.input-prefix,.input-suffix{position:relative}.input-prefix span,.input-suffix span{position:absolute;top:50%;transform:translateY(-50%);color:#778399;font-weight:750;pointer-events:none}.input-prefix span{left:14px}.input-prefix input{padding-left:30px}.input-suffix span{right:14px}.input-suffix input{padding-right:43px}.input-suffix.wide input{padding-right:78px}.checkbox-field{display:flex;align-items:end;padding-bottom:7px}.checkbox-field label{display:flex;align-items:center;gap:10px;margin:0;cursor:pointer}.checkbox-field input{width:18px;height:18px;accent-color:var(--blue)}.calc-error{min-height:24px;color:#b42318;font-weight:750}.results-dashboard{padding:0;overflow:hidden;margin-top:24px}.results-dashboard[hidden]{display:none}.results-hero{padding:26px;background:linear-gradient(135deg,var(--navy),#174a78);color:#fff}.results-hero span,.results-hero small{display:block;color:#d5e0ef}.results-hero strong{display:block;font-size:clamp(2.3rem,6vw,3.55rem);line-height:1.05;margin:7px 0}.result-metrics{display:grid;grid-template-columns:repeat(4,1fr);border-bottom:1px solid var(--line)}.result-metrics>div{padding:17px;border-right:1px solid var(--line)}.result-metrics>div:last-child{border-right:0}.result-metrics span,.result-details span{display:block;color:var(--muted);font-size:.82rem}.result-metrics strong,.result-details strong{display:block;color:var(--navy);margin-top:3px}.result-details{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding:20px}.result-details>div{background:var(--soft);padding:13px;border-radius:12px}.shopping-note{margin:20px 20px 0;padding:16px 18px;background:#eef9f5;border:1px solid #caeadf;border-radius:13px}.shopping-note strong{color:#155f4b}.shopping-note p{margin:4px 0 0;color:#42675d}.results-actions{padding:0 20px 22px}.calculator-guide{margin-top:24px}.calculator-guide details{border-top:1px solid var(--line);padding:14px 0}.calculator-guide summary{cursor:pointer;color:var(--navy);font-weight:800}.paint-hero{background:linear-gradient(145deg,#fff8f2,#f6f2ff 55%,#eef8ff)}.paint-layout{grid-template-columns:minmax(0,800px) minmax(270px,1fr)}.paint-sidebar{display:grid;gap:20px}.trust-mini .icon{margin-bottom:12px;background:#eaf8f3;color:#14795c}.trust-mini h3{margin:0 0 6px;color:var(--navy)}.trust-mini p{margin:0;color:var(--muted)}
@media(max-width:900px){.paint-layout{grid-template-columns:1fr}.result-metrics{grid-template-columns:repeat(2,1fr)}.result-metrics>div:nth-child(2){border-right:0}.result-details{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.result-metrics,.result-details{grid-template-columns:1fr}.result-metrics>div{border-right:0;border-bottom:1px solid var(--line)}.result-metrics>div:last-child{border-bottom:0}.checkbox-field{align-items:center;padding-bottom:0}.results-hero{padding:22px}}
@media print{.breadcrumb,.paint-sidebar,.calc-card:first-of-type,.results-actions,.calculator-guide{display:none!important}.results-dashboard{box-shadow:none;border:1px solid #bbb}.results-hero{background:#fff!important;color:#000!important}.results-hero span,.results-hero small{color:#444!important}}