:root{
  --brand:#0f6670;--brand-strong:#0b5962;--brand-deep:#074c54;--brand-soft:#e7f2f1;
  --ink:#17272b;--muted:#647378;--canvas:#f7faf9;--surface:#fff;--border:#dce4e3;
  --blue-soft:#eef6fb;--grey-soft:#f2f5f6;--success:#246955;--warning:#8a4b12;--danger:#b54747;
  --radius-sm:8px;--radius:12px;--radius-card:16px;--shadow:0 10px 32px rgba(20,50,50,.06);
  --max:1240px;--content:1120px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--canvas);color:var(--ink);line-height:1.5}
a{color:inherit;text-decoration:none}.container{width:min(var(--max),calc(100% - 40px));margin:auto}.content{width:min(var(--content),calc(100% - 40px));margin:auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(220,228,227,.8)}.nav{height:72px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:9px;font-family:Manrope,Inter,sans-serif;font-weight:800;font-size:20px;letter-spacing:-.03em}.brand-mark{width:28px;height:28px;border-radius:9px;background:var(--brand-soft);display:grid;place-items:center;color:var(--brand);font-size:18px;font-weight:800}.nav-links{display:flex;align-items:center;gap:22px;font-size:14px;font-weight:600;margin-left:18px}.nav-links a:hover{color:var(--brand)}.nav-search{margin-left:auto;width:230px;position:relative}.nav-search input{width:100%;height:40px;border:1px solid var(--border);border-radius:10px;padding:0 38px 0 13px;background:white}.nav-search span{position:absolute;right:12px;top:9px;color:var(--muted)}.menu-btn{display:none;margin-left:auto;border:0;background:none;font-size:24px}
.hero{padding:78px 0 64px;background:radial-gradient(circle at 55% 20%,#eaf6f8 0,rgba(234,246,248,.6) 26%,transparent 58%),linear-gradient(180deg,#fbfdfc,#f7faf9)}.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;align-items:center;gap:44px}.hero h1{font:700 clamp(42px,5vw,64px)/1.04 Manrope,Inter,sans-serif;letter-spacing:-.045em;margin:0 0 20px;max-width:680px}.hero h1 em{font-style:normal;color:var(--brand)}.hero p{font-size:18px;max-width:600px;color:#405156;margin:0 0 28px}.hero-visual{position:relative;min-height:330px}.visual-card{position:absolute;background:white;border:1px solid var(--border);box-shadow:var(--shadow);border-radius:22px}.calc-visual{width:190px;height:230px;left:70px;top:45px;transform:rotate(-5deg);padding:18px}.calc-screen{height:44px;background:#dce5e2;border-radius:8px;margin-bottom:18px}.calc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.calc-grid span{height:35px;border-radius:8px;background:#203137;color:#fff;display:grid;place-items:center;font-size:13px}.print-visual{width:230px;height:170px;right:30px;top:35px;transform:rotate(6deg);padding:14px;background:linear-gradient(135deg,#d8eef6,#e9f4ee 48%,#b9d9e6);overflow:hidden}.print-visual:after{content:"300 DPI";position:absolute;right:12px;bottom:12px;width:68px;height:68px;border-radius:50%;background:white;color:var(--brand);display:grid;place-items:center;font-weight:800;box-shadow:0 8px 24px rgba(20,50,50,.1)}.ruler{position:absolute;right:15px;bottom:15px;width:240px;height:44px;border:1px solid #9ba9a8;background:repeating-linear-gradient(90deg,transparent 0 9px,#7d8a8a 10px 11px);transform:rotate(-7deg);opacity:.75}
.hero-search{position:relative;max-width:720px}.hero-search input{width:100%;height:60px;border:1px solid #cdd9d8;border-radius:12px;background:#fff;padding:0 66px 0 20px;font-size:16px;box-shadow:0 8px 28px rgba(20,50,50,.06);outline:none}.hero-search input:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(15,102,112,.1)}.hero-search button{position:absolute;right:5px;top:5px;width:50px;height:50px;border:0;border-radius:9px;background:var(--brand);color:#fff;font-size:19px}.chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.chip{padding:6px 10px;border:1px solid #d8e1e0;border-radius:999px;background:#fff;font-size:12px;color:#405156}.chip:hover{border-color:#b6ccca;color:var(--brand)}
.section{padding:64px 0}.section.alt{background:#fff}.section-head{display:flex;align-items:end;justify-content:space-between;margin-bottom:24px}.section-head h2{font:700 30px/1.15 Manrope,Inter,sans-serif;letter-spacing:-.03em;margin:0 0 7px}.section-head p{margin:0;color:var(--muted)}.link{color:var(--brand);font-weight:700;font-size:14px}.tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.tool-card,.category-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-card);padding:22px;transition:.16s ease;min-height:185px}.tool-card:hover,.category-card:hover{transform:translateY(-2px);border-color:#bdd0ce;box-shadow:var(--shadow)}.tool-icon{width:38px;height:38px;border-radius:11px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-weight:800;margin-bottom:16px}.tool-card h3,.category-card h3{font:700 17px/1.25 Manrope,Inter,sans-serif;letter-spacing:-.015em;margin:0 0 9px}.tool-card p,.category-card p{font-size:14px;color:var(--muted);margin:0 0 18px}.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.category-card{min-height:160px;background:linear-gradient(180deg,#fff,#fbfcfc)}.category-card:nth-child(2),.category-card:nth-child(5){background:linear-gradient(180deg,#fff,#f5f9fb)}.category-card:nth-child(3),.category-card:nth-child(6){background:linear-gradient(180deg,#fff,#f7f8f8)}
.requirement-banner{background:linear-gradient(135deg,#083f46,#0b626b);color:#fff;border-radius:22px;padding:34px;display:grid;grid-template-columns:1.2fr 2fr;gap:30px;align-items:center;box-shadow:var(--shadow)}.requirement-banner h2{font:700 29px/1.15 Manrope,Inter,sans-serif;margin:0 0 8px}.requirement-banner p{margin:0;color:#d7eaeb}.req-pills{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.req-pill{border:1px solid rgba(255,255,255,.25);background:rgba(255,255,255,.08);padding:13px 15px;border-radius:11px;font-size:13px}.req-pill:hover{background:rgba(255,255,255,.14)}
.footer{background:#17272b;color:#d9e2e1;padding:52px 0 28px;margin-top:72px}.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:34px}.footer h4{color:#fff;margin:0 0 12px}.footer a{display:block;color:#b9c8c6;font-size:14px;margin:7px 0}.footer-bottom{margin-top:36px;padding-top:20px;border-top:1px solid #2d3d40;font-size:13px;color:#99aaa8}
.breadcrumb{font-size:12px;color:var(--muted);margin:28px 0 18px}.tool-page h1{font:700 clamp(30px,4vw,42px)/1.1 Manrope,Inter,sans-serif;letter-spacing:-.035em;margin:0 0 9px}.lede{color:var(--muted);margin:0 0 28px;font-size:16px}.calculator-shell{margin:26px 0 34px}.calc-panel{display:grid;grid-template-columns:.9fr 1.1fr;background:#fff;border:1px solid var(--border);border-radius:18px;overflow:hidden;box-shadow:0 12px 36px rgba(20,50,50,.05)}.input-pane,.result-pane{padding:28px}.result-pane{background:linear-gradient(145deg,var(--brand-soft),#f5fbfb)}.pane-label{font-size:12px;font-weight:800;letter-spacing:.08em;color:var(--muted);text-transform:uppercase;margin-bottom:18px}.field{margin-bottom:17px}.field label{display:block;font-size:13px;font-weight:700;margin-bottom:7px}.input-wrap{display:flex;align-items:stretch}.input-wrap input,.input-wrap select,.field input,.field select{width:100%;height:52px;border:1px solid #cfdad9;border-radius:10px;background:white;padding:0 13px;font:500 16px Inter,sans-serif;outline:none}.input-wrap input{border-radius:10px 0 0 10px}.input-wrap .unit{min-width:76px;border:1px solid #cfdad9;border-left:0;border-radius:0 10px 10px 0;background:#f9fbfb;display:grid;place-items:center;padding:0 12px;color:#4e5f63;font-size:14px}.field input:focus,.field select:focus,.input-wrap input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,102,112,.08)}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.primary-btn,.secondary-btn{height:48px;border-radius:10px;border:0;padding:0 18px;font-weight:800;cursor:pointer}.primary-btn{background:var(--brand);color:#fff}.primary-btn:hover{background:var(--brand-strong)}.secondary-btn{background:#fff;color:var(--brand);border:1px solid #bfd1cf}.result-main{margin-bottom:22px}.result-main .label{font-size:14px;color:#425257}.result-main .value{font:700 clamp(36px,5vw,48px)/1.05 Manrope,Inter,sans-serif;letter-spacing:-.04em;margin-top:4px}.result-grid{display:grid;grid-template-columns:1fr 1fr;border:1px solid #ccdfdd;border-radius:12px;overflow:hidden;margin:18px 0}.result-item{padding:15px}.result-item:nth-child(odd){border-right:1px solid #ccdfdd}.result-item:nth-child(-n+2){border-bottom:1px solid #ccdfdd}.result-item small{display:block;color:#5f7073;margin-bottom:3px}.result-item strong{font-size:17px}.formula{font-size:13px;color:#405156;border-top:1px solid #d5e5e3;padding-top:15px;margin-top:12px}.status{display:flex;align-items:center;gap:8px;color:var(--success);font-weight:800;font-size:14px}.smart-strip{margin-top:14px;border:1px solid #d2e4e2;background:#f0f8f7;border-radius:12px;padding:14px 16px;font-size:13px}.info-card{background:#fff;border:1px solid var(--border);border-radius:16px;padding:24px;margin:16px 0}.info-card h2{font:700 23px Manrope,Inter,sans-serif;margin:0 0 12px}.info-card p{color:#46575b}.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.related-card{border:1px solid var(--border);border-radius:12px;padding:15px;background:#fff;font-size:13px}.related-card strong{display:block;margin-bottom:5px}.preset-row{display:flex;gap:8px;flex-wrap:wrap}.preset{border:1px solid #d6e0df;background:#fff;border-radius:9px;padding:8px 11px;font-size:12px;cursor:pointer}.preset.active{background:var(--brand-soft);border-color:#a8ceca;color:var(--brand);font-weight:800}.two-col-info{display:grid;grid-template-columns:1fr 1fr;gap:18px}.table-wrap{overflow:auto}.data-table{width:100%;border-collapse:collapse;font-size:14px}.data-table th{text-align:left;background:#f6f9f9;color:#536367;padding:10px}.data-table td{padding:10px;border-top:1px solid #e6eceb}.data-table tr.highlight td{background:#eaf5f4;color:#134f56;font-weight:700}
.upload-box{border:1px solid #cdd8d7;border-radius:14px;background:#fbfdfd;min-height:220px;display:grid;place-items:center;text-align:center;padding:22px}.upload-box input{display:none}.upload-box label{cursor:pointer}.preview-image{max-width:100%;max-height:190px;border-radius:10px;display:none}.privacy-note{margin-top:14px;padding:11px 13px;border-radius:10px;background:#f4faf9;border:1px solid #d6e6e4;color:#506266;font-size:12px}.search-page{padding:38px 0}.search-large{max-width:760px;margin-bottom:30px}.all-tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:980px){.nav-links,.nav-search{display:none}.menu-btn{display:block}.hero-grid{grid-template-columns:1fr}.hero-visual{display:none}.tool-grid{grid-template-columns:repeat(2,1fr)}.category-grid{grid-template-columns:repeat(2,1fr)}.requirement-banner{grid-template-columns:1fr}.calc-panel{grid-template-columns:1fr}.related-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.5fr 1fr 1fr}.footer-grid>div:last-child{display:none}}
@media (max-width:640px){.container,.content{width:min(100% - 28px,var(--max))}.nav{height:62px}.hero{padding:46px 0 42px}.hero h1{font-size:40px}.hero p{font-size:16px}.hero-search input{height:56px}.hero-search button{height:46px;width:46px}.section{padding:46px 0}.section-head{align-items:start}.section-head h2{font-size:25px}.tool-grid{grid-template-columns:1fr}.category-grid{grid-template-columns:1fr}.tool-card{min-height:auto}.requirement-banner{padding:26px}.req-pills{grid-template-columns:1fr}.breadcrumb{margin-top:20px}.input-pane,.result-pane{padding:22px}.field-row{grid-template-columns:1fr}.result-grid{grid-template-columns:1fr}.result-item:nth-child(odd){border-right:0}.result-item{border-bottom:1px solid #ccdfdd!important}.result-item:last-child{border-bottom:0!important}.two-col-info{grid-template-columns:1fr}.related-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.all-tools-grid{grid-template-columns:1fr}.tool-page h1{font-size:32px}}

/* QA accessibility hardening */
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(15,102,112,.38);outline-offset:3px}
.skip-link{position:fixed;left:12px;top:8px;z-index:1000;background:#fff;color:#0b5962;border:2px solid #0f6670;border-radius:8px;padding:8px 12px;font-weight:700;transform:translateY(-150%)}
.skip-link:focus{transform:translateY(0)}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}