@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap');
:root{--ink:#132b37;--deep:#102a36;--teal:#176a70;--teal-dark:#10565c;--soft:#edf4f4;--paper:#f6f8f8;--white:#fff;--muted:#506572;--line:#cddadd;--amber:#ad732e;--amber-soft:#fbf2e6}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.58 'IBM Plex Sans',Arial,sans-serif}a{color:var(--teal-dark);text-underline-offset:3px}a:hover{text-decoration-thickness:2px}.shell{max-width:1180px;margin:auto;padding:0 30px}
.utility{background:var(--deep);color:#dae8eb;font:500 11px/1.4 'IBM Plex Mono',monospace;letter-spacing:.06em;text-transform:uppercase}.utility .shell{display:flex;justify-content:space-between;gap:16px;padding-top:8px;padding-bottom:8px}.top{background:var(--white);border-bottom:1px solid var(--line)}.top .shell{display:flex;align-items:center;justify-content:space-between;gap:28px;min-height:82px}.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:var(--deep);white-space:nowrap}.brand-symbol{display:block;width:42px;height:42px}.brand-type{display:flex;flex-direction:column;line-height:1.06}.brand-name{font-size:23px;font-weight:700;letter-spacing:-.05em}.brand-name em{color:var(--teal-dark);font-style:normal}.brand-sub{margin-top:5px;color:var(--muted);font:500 9px 'IBM Plex Mono',monospace;letter-spacing:.13em;text-transform:uppercase}.top nav{display:flex;align-items:center;flex-wrap:wrap;gap:6px 26px}.top nav a{text-decoration:none;color:var(--ink);font-size:14px;font-weight:600}.top nav a:hover{color:var(--teal-dark);text-decoration:underline}
.eyebrow,.micro{font:600 11px 'IBM Plex Mono',monospace;letter-spacing:.09em;text-transform:uppercase;color:var(--teal-dark)}h1,h2,h3{color:var(--deep);font-weight:600}h1{font-size:clamp(38px,5vw,62px);line-height:1.08;letter-spacing:-.055em;margin:16px 0 20px;max-width:820px}h2{font-size:clamp(25px,3vw,36px);line-height:1.16;letter-spacing:-.04em;margin:0 0 14px}h3{font-size:20px;letter-spacing:-.025em;margin:0 0 8px}p{margin:0 0 16px}.lead{font-size:19px;line-height:1.55;max-width:690px;color:#35505b}.hero{background:linear-gradient(90deg,#eef5f5 0%,#f4f8f8 100%);border-bottom:1px solid var(--line);padding:58px 0 54px}.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 265px;gap:52px;align-items:end}.hero-aside{background:#fff;border:1px solid var(--line);border-left:3px solid var(--teal);padding:20px 22px;box-shadow:0 4px 14px #0c39420a}.hero-aside strong{display:block;font-size:15px;margin:7px 0 8px}.hero-aside p{font-size:13px;color:var(--muted);margin:0}.hero-aside .micro{font-size:10px}
.tool-zone{padding-top:32px}.tool{background:var(--white);border:1px solid var(--line);box-shadow:0 9px 24px #1639440c;padding:32px;margin-bottom:65px}.tool-head{display:flex;justify-content:space-between;gap:20px;align-items:start;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:22px}.tool-head h2{margin:7px 0 5px}.tool-head p{margin:0;color:var(--muted);font-size:14px}.tool-badge{display:inline-block;border:1px solid #a3bec1;color:var(--teal-dark);background:var(--soft);padding:7px 10px;font:600 11px 'IBM Plex Mono',monospace;text-transform:uppercase;letter-spacing:.05em;white-space:nowrap}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px 16px}.field{display:flex;flex-direction:column;gap:7px;min-width:0}.field.wide{grid-column:span 2}label,.label{font-weight:600;font-size:14px}select,input{width:100%;min-height:48px;padding:11px 12px;border:1px solid #91a7ad;background:#fff;border-radius:3px;color:var(--ink);font:inherit;font-size:16px}select:hover,input:hover{border-color:var(--teal)}input:focus,select:focus,button:focus-visible,a:focus-visible{outline:3px solid #e2a650;outline-offset:2px}.hint{font-size:12px;line-height:1.45;color:var(--muted)}.choices{display:flex;gap:8px;flex-wrap:wrap}.choice{border:1px solid var(--line);background:var(--white);padding:10px 15px;cursor:pointer;font:600 14px 'IBM Plex Sans'}.choice[aria-pressed=true]{background:var(--teal);color:#fff;border-color:var(--teal)}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}button{cursor:pointer}.primary,.secondary{min-height:46px;padding:10px 19px;font:600 14px 'IBM Plex Sans';border-radius:3px}.primary{color:#fff;background:var(--teal-dark);border:1px solid var(--teal-dark)}.primary:hover{background:#0c454a}.secondary{background:#fff;border:1px solid #8ea4aa;color:var(--ink)}.secondary:hover{background:var(--soft)}.status{min-height:22px;font-size:13px;color:var(--teal-dark);margin:9px 0 0}.error{color:#a63727}.result{border-top:1px solid var(--line);margin-top:22px;padding-top:22px}.result[hidden],.conditional[hidden]{display:none}.result-grid{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line)}.metric{padding:22px 24px;border-right:1px solid var(--line);background:#f8fbfb}.metric:last-child{border-right:0}.metric strong{display:block;font-size:clamp(31px,4vw,44px);font-weight:600;letter-spacing:-.055em;line-height:1.1;color:var(--deep)}.metric span{font:600 11px 'IBM Plex Mono';text-transform:uppercase;letter-spacing:.04em;color:var(--teal-dark)}.result-note{background:var(--soft);border-left:3px solid var(--teal);padding:14px 17px;margin:14px 0;font-size:14px}
.section{padding:60px 0;border-top:1px solid var(--line)}.section-head{display:flex;justify-content:space-between;gap:32px;align-items:end;margin-bottom:24px}.section-head p{max-width:535px;color:var(--muted);font-size:14px;margin:0}.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line)}table{border-collapse:collapse;width:100%;min-width:690px;text-align:left}th,td{padding:15px 17px;border-bottom:1px solid var(--line);vertical-align:top}th{background:var(--deep);color:#fff;font:500 11px 'IBM Plex Mono';text-transform:uppercase;letter-spacing:.04em}td{font-size:14px}td:first-child{font-weight:600}td small{display:block;color:var(--muted)}tr:last-child td{border-bottom:0}.split{display:grid;grid-template-columns:1fr 1fr;gap:68px}.plain-list{padding-left:20px}.plain-list li{margin-bottom:11px}.callout{border-left:4px solid var(--amber);padding:16px 20px;background:var(--amber-soft);color:#4f3e2a;font-size:14px}.footer{background:var(--deep);color:#e2edf0;padding:46px 0}.footer a{color:#e2edf0}.footer-inner{display:flex;justify-content:space-between;gap:30px}.footer nav{display:flex;flex-wrap:wrap;gap:10px 20px;max-width:650px;font-size:13px}.footer strong{font-size:19px;font-weight:600}.footer .quiet{color:#bbd0d5}.page{padding:62px 0 80px;max-width:820px}.page h1{font-size:clamp(36px,5vw,56px)}.page h2{margin-top:42px}.page ul{padding-left:24px}.page li{margin-bottom:9px}.source-list{font-size:14px}.checkbox-list label{display:flex;gap:10px;align-items:start;font-weight:500;padding:10px 0;border-bottom:1px solid var(--line)}.checkbox-list input{width:18px;min-height:18px;margin-top:4px}.quiet{color:var(--muted);font-size:14px}.tabs{display:flex;gap:8px;margin-bottom:20px}.tab{padding:11px 17px;border:1px solid var(--line);background:#fff;font:600 14px 'IBM Plex Sans'}.tab[aria-selected=true]{border-color:var(--teal);border-bottom:3px solid var(--teal);color:var(--teal-dark)}.panel[hidden]{display:none}
@media(max-width:820px){.hero-grid,.split{grid-template-columns:1fr}.hero-aside{max-width:590px}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-inner{display:block}.footer nav{margin-top:20px}}@media(max-width:600px){.shell{padding:0 18px}.utility .shell{padding-top:7px;padding-bottom:7px}.utility span:last-child{display:none}.top .shell{align-items:start;flex-direction:column;gap:14px;padding-top:16px;padding-bottom:15px}.top nav{gap:8px 18px}.top nav a{font-size:13px}.brand-symbol{width:39px;height:39px}.brand-name{font-size:21px}.hero{padding:40px 0 36px}.hero-grid{gap:24px}h1{font-size:39px}.lead{font-size:17px}.tool-zone{padding-top:0}.tool{padding:24px 18px;margin:0 -18px 48px;border-left:0;border-right:0}.tool-head{display:block}.tool-badge{margin-top:13px}.grid{grid-template-columns:1fr;gap:16px}.field.wide{grid-column:auto}.result-grid{grid-template-columns:1fr}.metric{border-right:0;border-bottom:1px solid var(--line)}.metric:last-child{border-bottom:0}.section{padding:44px 0}.section-head{display:block}.page{padding-top:38px}.page h1{font-size:38px}}