/* Zorvex v4 — minimal light design system (Apple/Notion school):
   typography does the work, near-monochrome, hairlines over shadows. */
:root{
  --ink:#1d1d1f; --black:#111113; --mut:#6e6e73; --faint:#86868b;
  --line:#e6e6e4; --line2:#d2d2d7; --bg:#fff; --band:#f5f5f7; --card:#fff;
  --teal:#0e7c66; --teal-d:#0a5f4f; --teal-soft:#eef4f1;
  --gold:#b97f22; --gold-soft:#fdf6e9; --red:#c0452f;
  --radius:12px;
  --shadow:0 1px 2px rgba(0,0,0,.04);
  --font:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;font-size:17px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
::selection{background:var(--black);color:#fff}
a{color:var(--ink);text-decoration:underline;text-decoration-color:#c7c7cc;text-underline-offset:3px}
a:hover{text-decoration-color:var(--ink)}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:4px}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
/* ---------- header ---------- */
header.site{background:rgba(255,255,255,.88);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);position:sticky;top:0;z-index:60;border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;gap:28px;min-height:58px;position:relative}
.logo{display:flex;align-items:center;line-height:0;text-decoration:none}
.logo img{height:32px;width:auto;display:block}
nav.main{display:flex;gap:4px;margin-left:auto;align-items:center}
nav.main a{color:#333336;padding:8px 11px;border-radius:8px;font-size:15px;font-weight:550;text-decoration:none;transition:background .13s,color .13s;white-space:nowrap}
nav.main a:hover{background:var(--band);color:#000}
.menu-btn{display:none;background:none;border:0;cursor:pointer;padding:10px 6px;margin-left:auto;flex-direction:column;gap:6px}
.menu-btn span{display:block;width:22px;height:2px;background:var(--ink);border-radius:2px;transition:transform .18s,opacity .18s}
.menu-btn[aria-expanded="true"] span:first-child{transform:translateY(4px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:last-child{transform:translateY(-4px) rotate(-45deg)}
@media(max-width:900px){
  .menu-btn{display:flex}
  nav.main{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:8px 20px 16px;gap:0;box-shadow:0 18px 30px rgba(0,0,0,.07)}
  nav.main.open{display:flex}
  nav.main a{font-size:17px;font-weight:600;padding:13px 2px;border-top:1px solid var(--line);border-radius:0}
  nav.main a:first-child{border-top:0}
  nav.main a:hover{background:none}
}
/* ---------- hero ---------- */
.hero{background:#fff;padding:64px 0 10px;border-bottom:1px solid var(--line)}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;color:var(--faint);margin-bottom:16px}
.hero h1{font-size:clamp(36px,5.6vw,60px);line-height:1.08;letter-spacing:-1.6px;max-width:820px;font-weight:800;color:#000}
.hero p.sub{font-size:20px;color:var(--mut);max-width:700px;margin-top:16px;line-height:1.5}
.stats-band{display:flex;flex-wrap:wrap;margin-top:36px}
.stats-band .sb{padding:2px 26px 2px 0;margin-right:26px}
.stats-band .sb + .sb{border-left:1px solid var(--line);padding-left:26px}
.stats-band .n{font-size:27px;font-weight:800;letter-spacing:-.6px;color:#000}
.stats-band .t{font-size:13.5px;color:var(--mut);font-weight:550}
.trust-row{display:flex;flex-wrap:wrap;gap:6px 22px;margin:20px 0 26px;font-size:14.5px;color:var(--mut);font-weight:550}
.trust-row span::before{content:"✓ ";color:var(--ink);font-weight:800}
@media(max-width:640px){.stats-band .sb{padding-right:16px;margin-right:16px}.stats-band .sb + .sb{padding-left:16px}}
/* ---------- type & layout ---------- */
.crumbs{font-size:14px;color:var(--faint);padding:18px 0 0}
.crumbs a{color:var(--faint);text-decoration:none}
.crumbs a:hover{color:var(--ink)}
main{padding:12px 0 40px}
h1.page{font-size:clamp(30px,4.6vw,44px);line-height:1.12;letter-spacing:-1.1px;color:#000;margin:14px 0 10px;font-weight:800}
.lede{font-size:19.5px;color:#3c3c40;max-width:820px;line-height:1.55}
h2{font-size:25px;color:#000;margin:42px 0 12px;letter-spacing:-.6px;font-weight:800}
h3{font-size:18.5px;color:var(--ink);margin:20px 0 8px;font-weight:700}
p{margin:0 0 14px}
ul,ol{margin:0 0 16px 22px}
li{margin-bottom:6px}
.tag{display:inline-block;background:var(--band);color:var(--mut);font-weight:650;font-size:12px;border-radius:999px;padding:4px 11px;margin-bottom:10px;text-transform:uppercase;letter-spacing:.7px}
.qa{background:#fff;border:1px solid var(--line);border-left:3px solid var(--ink);border-radius:10px;padding:15px 18px;margin:18px 0;max-width:860px;font-size:16px}
.qa strong{color:var(--ink);text-transform:uppercase;font-size:12px;letter-spacing:.8px}
.post-hero{width:100%;height:auto;border-radius:14px;margin:20px 0 8px;display:block;background:var(--band)}
/* ---------- calculator ---------- */
.calc-card{background:var(--card);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:28px;margin:26px 0}
.calc-grid{display:grid;grid-template-columns:1fr 1.08fr;gap:34px}
@media(max-width:860px){.calc-grid{grid-template-columns:1fr}}
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;font-size:14px;margin-bottom:5px;color:#333336}
.field .inwrap{display:flex;align-items:stretch;border:1.5px solid var(--line2);border-radius:10px;overflow:hidden;background:#fff;transition:border-color .13s,box-shadow .13s}
.field .inwrap:focus-within{border-color:var(--ink);box-shadow:0 0 0 3px rgba(0,0,0,.07)}
.field .pre,.field .suf{background:var(--band);color:var(--mut);display:flex;align-items:center;padding:0 11px;font-size:15px;font-weight:600}
.field input,.field select{border:0;outline:0;padding:11px 12px;font-size:16.5px;width:100%;font-weight:600;color:var(--ink);background:#fff;font-family:var(--font)}
.field .hint{font-size:13px;color:var(--faint);margin-top:4px}
input.rng{-webkit-appearance:none;appearance:none;width:100%;height:26px;background:transparent;cursor:pointer;margin-top:2px}
input.rng::-webkit-slider-runnable-track{height:5px;border-radius:3px;background:var(--line2)}
input.rng::-webkit-slider-thumb{-webkit-appearance:none;width:19px;height:19px;border-radius:50%;background:#fff;border:2px solid var(--ink);margin-top:-7px;box-shadow:0 1px 4px rgba(0,0,0,.18)}
input.rng::-moz-range-track{height:5px;border-radius:3px;background:var(--line2)}
input.rng::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:#fff;border:2px solid var(--ink);box-shadow:0 1px 4px rgba(0,0,0,.18)}
.btn{display:inline-block;background:var(--black);color:#fff;font-weight:650;font-size:16.5px;border:0;border-radius:10px;padding:14px 26px;cursor:pointer;width:100%;transition:background .13s;font-family:var(--font)}
.btn:hover{background:#000}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}
.abtn{background:#fff;border:1.5px solid var(--line2);color:var(--ink);font-weight:600;font-size:14px;border-radius:999px;padding:8px 16px;cursor:pointer;transition:border-color .13s,background .13s;font-family:var(--font)}
.abtn:hover{border-color:var(--ink);background:var(--band)}
.results{min-width:0}
.res-head{background:var(--band);border-radius:14px;padding:22px;text-align:center;margin-bottom:16px}
.res-head .lbl{font-size:12.5px;font-weight:700;text-transform:uppercase;letter-spacing:.9px;color:var(--mut)}
.res-head .big{font-size:clamp(33px,5vw,46px);font-weight:800;color:#000;letter-spacing:-1.2px;line-height:1.08;margin:3px 0}
.res-head .sub2{font-size:15px;color:var(--mut)}
table.break{width:100%;border-collapse:collapse;font-size:15.5px}
table.break td,table.break th{padding:9px 6px;border-bottom:1px solid var(--line);text-align:left}
table.break td:last-child,table.break th:last-child{text-align:right;font-weight:700;white-space:nowrap}
table.break tr.total td{border-top:2px solid var(--ink);border-bottom:0;font-weight:800;color:#000;font-size:16.5px}
.bar{display:flex;height:14px;border-radius:7px;overflow:hidden;margin:12px 0 4px}
.bar div{min-width:2px}
.legend{display:flex;flex-wrap:wrap;gap:12px;font-size:13.5px;color:var(--mut);margin-bottom:8px}
.legend.col{flex-direction:column;gap:7px;margin:0}
.legend i{display:inline-block;width:11px;height:11px;border-radius:3px;margin-right:5px}
.donut-wrap{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin:6px 0 12px}
.donut{width:148px;height:148px;flex:none}
.donut .dc-t{font-size:19px;font-weight:800;fill:#000}
.donut .dc-s{font-size:11.5px;fill:var(--mut);font-weight:600}
details.sched{margin-top:14px;border:1px solid var(--line);border-radius:10px;background:#fff}
details.sched summary{cursor:pointer;font-weight:650;padding:13px 16px;color:var(--ink)}
.sched-scroll{max-height:430px;overflow:auto;border-top:1px solid var(--line)}
table.sched{width:100%;border-collapse:collapse;font-size:14px}
table.sched th{position:sticky;top:0;background:var(--band);color:var(--ink);padding:8px;text-align:right;font-size:13px}
table.sched th:first-child{text-align:left}
table.sched td{padding:6px 8px;border-bottom:1px solid #f0f0f2;text-align:right;font-variant-numeric:tabular-nums}
table.sched td:first-child{text-align:left}
.note{font-size:13.5px;color:var(--mut)}
.callout{background:var(--gold-soft);border:1px solid #f0e2bd;border-radius:10px;padding:16px 18px;margin:18px 0}
.callout strong{color:#7a5410}
.win{background:var(--band);border:1px solid var(--line);border-radius:10px;padding:16px 18px;margin:18px 0}
.refs{background:#fbfbfd;border:1px solid var(--line);border-radius:12px;padding:18px 20px;margin:26px 0;max-width:860px}
.refs h3{margin:0 0 8px;font-size:16px}
.refs ul{margin:0 0 6px 18px}
.refs li{margin-bottom:4px;font-size:15px}
/* ---------- data tables ---------- */
table.data{width:100%;border-collapse:collapse;font-size:15px;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;margin:14px 0}
table.data th{background:var(--band);color:var(--ink);padding:10px 12px;text-align:right;font-size:13.5px;font-weight:700}
table.data th:first-child{text-align:left}
table.data td{padding:8px 12px;border-bottom:1px solid #f0f0f2;text-align:right;font-variant-numeric:tabular-nums}
table.data td:first-child{text-align:left;font-weight:600}
table.data tr:nth-child(even) td{background:#fbfbfd}
.table-scroll{overflow-x:auto}
/* ---------- cards & clusters ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px;margin:18px 0}
.tool-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;display:block;transition:border-color .13s;position:relative;text-decoration:none}
.tool-card:hover{border-color:var(--ink);text-decoration:none}
.tool-card .card-img{width:100%;height:158px;object-fit:cover;border-radius:8px;display:block;margin-bottom:14px;background:var(--band)}
.tool-card h3{margin:2px 0 5px;font-size:17px;color:var(--ink)}
.tool-card p{font-size:14.5px;color:var(--mut);margin:0}
.tool-card::after{content:"→";position:absolute;top:18px;right:18px;color:#c7c7cc;font-weight:800;transition:color .13s}
.tool-card:hover::after{color:var(--ink)}
.chips{display:flex;flex-wrap:wrap;gap:9px;margin:14px 0}
.chips a{background:#fff;border:1.5px solid var(--line2);border-radius:999px;padding:8px 16px;font-size:14.5px;font-weight:600;color:var(--ink);text-decoration:none;transition:border-color .13s}
.chips a:hover{border-color:var(--ink)}
.cluster{background:#fbfbfd;border:1px solid var(--line);border-radius:14px;padding:24px;margin:22px 0}
.cluster h2{margin-top:0}
.journey{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0}
.journey a{background:#fff;border:1.5px solid var(--line2);border-radius:999px;padding:8px 15px;font-size:14.5px;font-weight:600;color:var(--ink);text-decoration:none}
.journey a.cur{background:var(--black);color:#fff;border-color:var(--black)}
.journey a:hover{border-color:var(--ink)}
.next-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;margin:16px 0}
.next-card{background:var(--black);color:#fff;border-radius:var(--radius);padding:20px;display:block;transition:background .13s;text-decoration:none}
.next-card:hover{background:#000;text-decoration:none}
.next-card .step{font-size:12px;font-weight:700;letter-spacing:.9px;text-transform:uppercase;color:#a1a1a6}
.next-card h3{color:#fff;margin:6px 0 4px;font-size:17px}
.next-card p{color:#c7c7cc;font-size:14.5px;margin:0}
.faq{border:1px solid var(--line);border-radius:10px;background:#fff;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:650;padding:15px 17px;color:var(--ink);list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq .a{padding:0 17px 15px;color:#3c3c40}
.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;margin:14px 0}
.kv .cell{background:#fbfbfd;border:1px solid var(--line);border-radius:10px;padding:13px 15px}
.kv .k{font-size:12px;color:var(--mut);font-weight:700;text-transform:uppercase;letter-spacing:.5px}
.kv .v{font-size:20px;font-weight:800;color:#000}
.formula{background:#1d1d1f;color:#e8e8ea;border-radius:10px;padding:16px 18px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:15px;overflow-x:auto;margin:14px 0;word-break:break-all}
.prose{max-width:860px}
.prose img{max-width:100%}
/* ---------- footer ---------- */
footer.site{background:var(--band);color:#55555a;margin-top:56px;padding:46px 0 28px;font-size:15px;border-top:1px solid var(--line)}
footer.site h4{color:var(--ink);font-size:15.5px;margin-bottom:12px}
footer.site a{color:#55555a;text-decoration:none}
footer.site a:hover{color:#000;text-decoration:underline}
footer.site .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:26px}
footer.site ul{list-style:none;margin:0}
footer.site li{margin-bottom:7px}
footer.site .fine{border-top:1px solid #e0e0e2;margin-top:28px;padding-top:16px;font-size:13.5px;color:var(--faint)}
/* ---------- print ---------- */
@media print{
  header.site,footer.site,.journey,.actions,.btn,.refs,.next-grid,.faq,.stats-band,.trust-row,.menu-btn,.crumbs{display:none!important}
  body{background:#fff;font-size:13px}
  .calc-card{box-shadow:none;border:1px solid #ccc;break-inside:avoid}
  .sched-scroll{max-height:none;overflow:visible}
  main{padding:0}
}