@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@500;600&family=Inter:wght@400;500;600;700&family=Space+Grotesk:wght@500;600;700&display=swap');

:root{
  --sans:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
  --display:'Space Grotesk','Inter',system-ui,sans-serif;
  --mono:'IBM Plex Mono','SFMono-Regular',Consolas,monospace;
}

html{font-size:16px}
[hidden]{display:none!important}
body{font-family:var(--sans);font-weight:400;letter-spacing:-.006em;background:#fff}
h1,h2,h3,h4,.brand,.button,button{font-family:var(--display)}
h1,h2,h3,h4{color:#12181f;letter-spacing:-.035em}
p{color:#56616d}
::selection{background:#dce5ff;color:#17295f}
.wrap{width:min(1180px,calc(100% - 34px))}

.top,.light .top{height:66px;background:#12181f;color:#fff;border-bottom:1px solid #26313d;box-shadow:0 1px 0 rgba(255,255,255,.04)}
.nav{gap:26px}
.brand{font-size:1.08rem;font-weight:700;letter-spacing:-.035em}
.brand i{color:#47b98b;font-size:1.3rem}
.links{gap:8px;color:#d9dee5;font-size:.86rem}
.links a{padding:8px 11px;border-radius:7px;transition:background .15s ease,color .15s ease}
.links a:hover{background:#202a35;color:#fff}

/* Global navigation and calculator mega menu. */
.top{position:relative;z-index:100}
.nav{position:relative;min-height:66px}
.links{display:flex;align-items:center;margin-left:auto}
.mega-trigger{display:flex;align-items:center;gap:7px;min-height:38px;padding:8px 12px;border:1px solid transparent;background:transparent;color:#e4e8ee;font:600 .86rem var(--sans);cursor:pointer}
.mega-trigger:hover,.mega-trigger[aria-expanded=true]{background:#202a35;color:#fff;border-color:#354251}
.menu-grid-icon{color:#63c5a0;font-size:1rem;line-height:1}
.menu-chevron{font-size:1rem;transition:transform .18s ease}
.mega-trigger[aria-expanded=true] .menu-chevron{transform:rotate(180deg)}
.links a[aria-current=page]{background:#26313d;color:#fff}
.mega-menu{position:absolute;top:calc(100% - 1px);right:0;width:min(1040px,calc(100vw - 34px));background:#fff;color:#17202a;border:1px solid #d8dee8;border-radius:0 0 14px 14px;box-shadow:0 24px 60px rgba(9,18,31,.2);overflow:hidden;z-index:120}
.mega-menu[hidden]{display:none}
.mega-top{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 24px 18px;border-bottom:1px solid #e4e8ef;background:linear-gradient(100deg,#f4f7ff,#fff)}
.mega-top strong{display:block;font:650 1.25rem var(--display);letter-spacing:-.03em;color:#12181f;margin-top:3px}
.mega-kicker{font-size:.7rem;font-weight:700;letter-spacing:.11em;text-transform:uppercase;color:#3453ac}
.mega-top>a{color:#28479d;font-size:.84rem;font-weight:700;padding:9px 12px;border:1px solid #c6d2ee;border-radius:8px;background:#fff;white-space:nowrap}
.mega-top>a:hover{background:#e9eefc}
.mega-search{padding:17px 24px 7px;background:#fff}
.mega-search label{display:block;color:#344054;font-size:.76rem;font-weight:700;margin-bottom:6px}
.mega-search input{width:100%;min-height:46px;padding:10px 14px;border:1px solid #d8dee8;border-radius:8px;font:500 .9rem var(--sans);outline:none;color:#17202a;background:#fff}
.mega-search input:focus{border-color:#3453ac;box-shadow:0 0 0 3px rgba(52,83,172,.12)}
.mega-search p{min-height:18px;margin:5px 0 0;font-size:.72rem;color:#5c6879}
.mega-columns{display:grid;grid-template-columns:1.12fr .9fr 1fr;gap:14px;padding:8px 24px 24px}
.mega-columns section{padding:15px;border:1px solid #e1e6ee;border-radius:10px;background:#fbfcff}
.mega-heading{display:flex;gap:10px;align-items:center;padding-bottom:11px;margin-bottom:5px;border-bottom:1px solid #e5e9f0}
.mega-heading strong{display:block;font:650 .9rem var(--display);color:#17202a}
.mega-heading small{display:block;color:#6a7585;font-size:.7rem;margin-top:1px}
.mega-icon{display:grid;place-items:center;width:34px;height:34px;border-radius:9px;background:#e9eefc;color:#3453ac;font-weight:700}
.return-icon{background:#e5f4ed;color:#167054}.grow-icon{background:#fff0df;color:#9a5610}
.mega-columns a{display:block;padding:9px 10px;border-radius:7px;color:#1c2937;transition:background .13s ease,transform .13s ease}
.mega-columns [hidden]{display:none!important}
.mega-columns a:hover,.mega-columns a:focus-visible{background:#edf2ff;transform:translateX(2px)}
.mega-columns a[aria-current=page]{background:#e5ebfb;box-shadow:inset 3px 0 #3453ac}
.mega-columns a b{display:block;font:600 .84rem var(--sans);color:#17202a}
.mega-columns a span{display:block;font-size:.68rem;color:#707b8b;margin-top:2px;line-height:1.35}
.mega-footer{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:13px 24px;background:#12181f;color:#aeb8c5;font-size:.73rem}
.mega-footer>div{display:flex;gap:4px;flex-wrap:wrap;justify-content:flex-end}
.mega-footer a{color:#e0e5eb;padding:6px 8px;border-radius:6px}
.mega-footer a:hover{background:#26313d;color:#fff}
.mega-open body:after{content:'';position:fixed;z-index:90;inset:66px 0 0;background:rgba(10,18,29,.25);pointer-events:none}

button,.button{border-radius:8px;font-weight:650;transition:transform .15s ease,background .15s ease,border-color .15s ease,color .15s ease}
button:active,.button:active{transform:translateY(1px)}
.button{background:#12181f;color:#fff;padding:12px 17px}
.button:hover{background:#26303c}
.button.ghost{background:#fff;color:#2f4b9c;border:1px solid #cbd4ec}
.button.ghost:hover{background:#e8ecf8;border-color:#aebde2}

.hero,.light .hero{padding:82px 0 66px;background:linear-gradient(180deg,#f7f9ff 0,#fff 100%);border-bottom:1px solid #e5e8ed}
.hero h1,.calc-intro h1{font-family:var(--display);font-weight:700;letter-spacing:-.055em}
.hero p,.calc-intro p{color:#5c6672;line-height:1.7}
.eyebrow{color:#2f4b9c;font-family:var(--sans);letter-spacing:.12em}
.search{max-width:760px}
.search input{min-height:56px;border-radius:9px;box-shadow:0 8px 28px rgba(31,48,82,.06)}

section{padding:54px 0}
.section-head h2{font-family:var(--display);font-weight:650;letter-spacing:-.04em}
.grid{gap:16px}
.card,.light .card{border:1px solid #dfe3e8;border-radius:11px;box-shadow:0 1px 2px rgba(18,24,31,.05)}
.tool-card{min-height:172px;padding:22px;position:relative;overflow:hidden}
.tool-card::after{content:'→';position:absolute;right:20px;bottom:17px;color:#2f4b9c;font:700 1rem var(--display);opacity:.65;transition:transform .15s ease}
.tool-card:hover{transform:translateY(-2px);background:#f8faff;border-color:#bfcbed;box-shadow:0 9px 24px rgba(35,54,92,.08)}
.tool-card:hover::after{transform:translateX(3px)}
.tool-card strong{font-family:var(--display);font-size:1.08rem;color:#12181f}
.tool-card p{color:#66717d}
.tag{color:#2f4b9c;letter-spacing:.08em}
.callout,.light .callout{border-radius:11px;background:linear-gradient(135deg,#eef2ff,#f4f8ff);border-color:#ccd6ef;color:#273863}
.explain{background:#f5f6f8;border-top:1px solid #e5e8ec;border-bottom:1px solid #e5e8ec}
.reading{font-size:1rem;line-height:1.75}
.reading h2,.reading h3{font-family:var(--display)}

.search input,.field input,.field select,.tool-select{font-family:var(--sans)}
.field input[type=number],.result strong,td{font-family:var(--mono)}
.field input:focus,.field select:focus,.search input:focus{border-color:#2f4b9c;box-shadow:0 0 0 3px rgba(47,75,156,.1)}

.notice{font-size:.8rem;background:#fff8e8;border-color:#ead9b3}
.notice .wrap{padding:8px 0}
.detail-hero{padding:46px 0 34px;background:linear-gradient(180deg,#fafbff,#fff);border-bottom:1px solid #e4e8ed}
.detail-hero h1{font-family:var(--display);font-weight:700;letter-spacing:-.045em;margin-top:7px}
.detail-hero p{color:#5c6672;line-height:1.65}
.feature-strip{gap:36px;margin-top:22px}
.feature-strip span{font-size:.78rem;color:#66717d}
.feature-strip b{font-family:var(--display);font-size:.9rem;color:#12181f;margin-bottom:2px}

.tool-section{padding:38px 0 54px}
.tool-grid{gap:28px}
.tool-form,.tool-results{border-color:#dfe3e8;border-radius:10px;padding:24px;box-shadow:0 1px 2px rgba(18,24,31,.06)}
.tool-form h2,.tool-results h2{font-family:var(--display);font-size:1.15rem;color:#12181f}
.panel-copy{color:#65707c;line-height:1.55}
.tool-form .field{margin-bottom:17px}
.tool-form .field label{color:#2b333b;font-size:.85rem;font-weight:600;margin-bottom:6px}
.tool-form input,.tool-form select{min-height:52px;padding:10px 14px!important;border:1px solid #dfe3e8!important;border-radius:7px!important;background:#fff!important;color:#12181f!important;outline:none}
.tool-form input[type=number]{font:600 .98rem var(--mono)!important}
.tool-form select{font:600 .92rem var(--sans)!important}
.calculate{min-height:48px;border-radius:7px;font-family:var(--display);font-weight:700;background:#12181f;color:#fff}
.calculate:hover{background:#26303c}
.result-grid{gap:11px}
.tool-results .result{padding:14px;border-radius:7px;background:#fff;border-color:#dfe3e8}
.tool-results .result.primary{background:#e8ecf8;border-color:#c6d0eb}
.tool-results .result span{font-size:.76rem;font-weight:600;color:#65707c}
.tool-results .result strong{font:600 1.08rem var(--mono);color:#15202b}
.tool-results .result.primary strong{font-size:1.55rem;color:#203e96}
.save-btn{border-radius:999px;background:#eef2ff;color:#2f4b9c;border-color:#becaeb;font-family:var(--sans);font-weight:650}
.save-btn:hover{background:#2f4b9c;color:#fff;border-color:#2f4b9c}
.risk{border-radius:7px;background:#fdf1de;color:#765015;border-color:#bc811f}
.formula{border-radius:8px;font-family:var(--mono);background:#fff;color:#26384d}

.reading{max-width:820px}
.reading h2{font-family:var(--display);font-size:1.5rem;letter-spacing:-.03em}
.reading h3{font-family:var(--display)}
.seo-breadcrumb{display:flex;flex-wrap:wrap;gap:7px;align-items:center;margin-bottom:20px;color:#718096;font-size:.76rem}
.seo-breadcrumb a{color:#3453ac;font-weight:600}
.seo-breadcrumb span[aria-current=page]{color:#56616d}
.seo-method-note{margin-top:18px!important;font-size:.76rem!important;color:#647189!important}
.seo-method-note a{color:#3453ac;font-weight:600}
.seo-expanded-content{margin-top:34px;padding-top:2px;border-top:1px solid #dde3eb}
.seo-expanded-content h2:first-child{margin-top:28px}
.related{gap:10px}
.related a{border-radius:8px;transition:background .15s ease,border-color .15s ease,transform .15s ease}
.related a:hover{background:#f8faff;border-color:#9fb0dc;transform:translateY(-1px)}
.faq details{border-color:#dfe3e8}
.faq summary{font-family:var(--display);color:#17202a}
footer,.detail-footer{padding:34px 0!important}

@media(max-width:620px){
  .top,.light .top{height:auto;min-height:62px}
  .nav{min-height:62px;align-items:center}
  .links{display:flex;max-width:68vw;overflow-x:auto;scrollbar-width:none}
  .links::-webkit-scrollbar{display:none}
  .links a{white-space:nowrap;padding:7px 9px}
  .hero,.light .hero{padding:54px 0 42px}
  .hero h1{font-size:2.35rem}
  .tool-card{min-height:150px}
  .notice .wrap{padding:8px 0}
  .detail-hero{padding:34px 0 26px}
  .feature-strip{gap:16px}
  .tool-section{padding-top:28px}
  .tool-form,.tool-results{padding:18px}
  .tool-actions{align-items:flex-start}
  .save-btn{padding:7px 11px}
  .nav{gap:9px}
  .brand{font-size:1rem;white-space:nowrap}
  .links{display:flex;max-width:none;overflow:visible;gap:4px}
  .links .nav-directory,.links .nav-method{display:none}
  .mega-trigger{padding:7px 10px;min-height:36px}
  .mega-menu{position:fixed;top:62px;left:8px;right:8px;width:auto;max-height:calc(100dvh - 70px);overflow:auto;border-radius:0 0 12px 12px}
  .mega-top{padding:16px;align-items:flex-start}
  .mega-top strong{font-size:1.05rem;max-width:190px}
  .mega-top>a{font-size:.74rem;padding:8px}
  .mega-search{padding:14px 16px 5px}
  .mega-columns{grid-template-columns:1fr;padding:6px 16px 18px;gap:10px}
  .mega-columns section{padding:12px}
  .mega-columns a{padding:10px 8px}
  .mega-footer{align-items:flex-start;flex-direction:column;padding:13px 16px;gap:6px}
  .mega-footer>div{justify-content:flex-start}
  .mega-open body{overflow:hidden}
  .mega-open body:after{inset:62px 0 0}
}

/* Shared calculator controls and full result breakdowns. */
.tool-grid>*{min-width:0}
.tool-results .result.primary{grid-column:1/-1}
.tool-help{font-size:.88rem;line-height:1.65;color:#5d6878;margin:12px 0 22px}
.field[hidden],.tool-breakdown[hidden]{display:none!important}
.field small,.remember-row small{display:block;font-size:.76rem;line-height:1.5;color:#657185;margin-top:6px}
.tool-form .unit-input input{padding-right:58px!important;width:100%;min-width:0}
.tool-form input[aria-invalid=true]{border-color:#ba4335!important;background:#fff8f7!important}
.secondary-action{background:#eef2ff;color:#2f4b9c;border:1px solid #cbd4eb;padding:10px 16px;min-height:44px;font-size:.87rem}
.secondary-action:hover{background:#e0e7fb;border-color:#a6b8df}
button:disabled{opacity:.5;cursor:not-allowed}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,.breakdown-scroll:focus-visible{outline:3px solid #8ca6ee!important;outline-offset:3px}
.reset-action{width:100%;margin-top:10px}
.save-btn{white-space:nowrap;flex-shrink:0}
.csv-fallback{display:block;margin-top:12px;font-size:.85rem;color:#3453ac;text-decoration:underline}
.csv-fallback[hidden]{display:none}
.remember-row{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:18px 0;border-top:1px solid #e1e6ee;margin-top:20px;cursor:pointer;font-size:.86rem}
.tool-form .remember-row input{appearance:none;flex:0 0 48px;width:48px!important;min-height:28px;height:28px;padding:0!important;border-radius:20px!important;background:#c9d1de!important;position:relative;cursor:pointer}
.tool-form .remember-row input:before{content:'';position:absolute;left:3px;top:3px;width:20px;height:20px;background:#fff;border-radius:50%;box-shadow:0 1px 3px #12181f22;transition:transform .16s}
.tool-form .remember-row input:checked{background:#3453ac!important;border-color:#3453ac!important}
.tool-form .remember-row input:checked:before{transform:translateX(20px)}
.result-summary{background:#f1f4fb;border-left:3px solid #3654ac;padding:12px 14px;font-size:.88rem;line-height:1.6;margin:16px 0}
.tool-results .result strong{overflow-wrap:anywhere}
.action-status{font-size:.78rem;color:#3654ac;line-height:1.5;margin:10px 0 0}
.purchase-row{border:1px solid #dce2ed;border-radius:10px;padding:16px;margin:0 0 18px;min-width:0;background:#fafbff}
.purchase-row legend{font-weight:650;font-size:.88rem;padding:0 8px;color:#273858}
.purchase-row .field input{width:100%;min-width:0}
.tool-breakdown{padding:26px 0 0;margin-top:26px;border-top:1px solid #e1e6ee}
.tool-breakdown h2{font-size:1.4rem;margin-bottom:8px}
.breakdown-scroll{border:1px solid #dce2ed;border-radius:10px;overflow:auto;scrollbar-color:#6b82c4 #e9eef9;scrollbar-width:thin}
.breakdown-scroll table{width:100%;border-collapse:collapse;white-space:nowrap}
.breakdown-scroll th{background:#f3f5fa;color:#26344d;padding:15px;text-align:right;font-size:.82rem}
.breakdown-scroll td{padding:14px 15px;border-top:1px solid #e0e5ee;text-align:right;color:#25334a;font-size:.84rem}
.breakdown-scroll th:first-child,.breakdown-scroll td:first-child{text-align:left}
.breakdown-scroll tr:nth-child(even){background:#fafbfe}
.table-navigation{display:flex;align-items:center;gap:12px;padding:12px 16px;background:#f1f4fc;border:1px solid #dce3f2;border-radius:10px;margin-bottom:12px;color:#3d5289;font-size:.8rem}
.table-navigation[hidden]{display:none}
.table-navigation input{flex:1;min-width:40px;accent-color:#3654ac;cursor:pointer}
.table-navigation button{padding:5px 12px;min-height:36px;background:white}
.table-navigation span{white-space:nowrap}
@media(max-width:520px){.table-navigation{gap:8px;padding:10px}.table-navigation span{display:none}}
.growth-bar{display:flex;height:16px;overflow:hidden;border-radius:20px;background:#53a389;margin:22px 0 10px}
.growth-bar span{background:#3654ac;display:block}
.tool-directory-controls{padding:0 0 26px;display:flex;gap:12px;flex-wrap:wrap}
.tool-directory-controls input{flex:1;min-width:200px;padding:14px;border:1px solid #dce2ed;border-radius:8px;background:white;color:#17202a}
.tool-directory-controls select{padding:12px;border:1px solid #dce2ed;border-radius:8px;background:white;color:#17202a}
.tool-card[hidden]{display:none!important}
@media(max-width:520px){.tool-results .result.primary{grid-column:1/-1}.tool-results .result-grid{grid-template-columns:1fr 1fr}.tool-results .result{padding:11px}.tool-results .result strong{font-size:.95rem}.tool-results .result.primary strong{font-size:1.4rem}.purchase-row .form-grid{grid-template-columns:1fr}.breakdown-scroll td,.breakdown-scroll th{padding:12px}.tool-form .field{min-width:0}}