/* WestNet Learning — Free Tools : stylesheet v2 "Instrument"
   Calm, measured, flexbox-only (old-browser safe), no data-URIs. */
:root{
  --navy:#0C1C35;--navy2:#13284c;--navy3:#1B3862;
  --ink:#14233B;--slate:#5A6A7B;--muted:#5A6A7B;
  --paper:#E9ECF0;--bg:#E9ECF0;--face:#FFFFFF;--card:#FFFFFF;
  --line:#D6DCE4;--rule:#C4CCD6;--tint:#F1F4F8;--tint2:#E6EBF2;
  --gold:#B4831C;--gold2:#96700F;--gold3:#E7C25C;--gold-br:#E7C25C;
  --green:#0E7C5B;--red:#B3322B;
  --r:10px;--rs:7px;
  --serif:'IBM Plex Sans','Segoe UI',system-ui,sans-serif;
  --sans:'IBM Plex Sans','Segoe UI',system-ui,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,Consolas,monospace;
  --shadow:0 1px 2px rgba(20,35,59,.06);
  --shadow-lg:0 16px 40px rgba(20,35,59,.18);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background:var(--paper);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;font-size:16px}
a{color:var(--navy);text-decoration:none}
a:hover{color:var(--gold2)}
h1,h2,h3{line-height:1.15;font-weight:600}
img{max-width:100%}
svg{max-width:100%;display:block}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px;width:100%}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.hide{display:none !important}

/* Graduated tick rule — the signature motif */
.rule{height:14px;border-bottom:1px solid var(--rule);
  background-image:repeating-linear-gradient(90deg,var(--rule) 0 1px,transparent 1px 9px);
  background-position:left bottom;background-repeat:repeat-x;background-size:100% 8px}
.rule.on-dark{border-bottom-color:rgba(255,255,255,.35);
  background-image:repeating-linear-gradient(90deg,rgba(255,255,255,.32) 0 1px,transparent 1px 9px)}

/* ---------- Header ---------- */
.site-header{background:var(--navy);color:#fff;position:sticky;top:0;z-index:200}
.site-header .inner{display:flex;align-items:center;justify-content:space-between;padding:11px 0;flex-wrap:nowrap}
.brand{display:flex;align-items:baseline;flex:0 0 auto}
.site-header img.logo{height:28px;filter:brightness(0) invert(1)}
.brand-sub{font-weight:600;font-size:16px;color:var(--gold3);margin-left:8px}
.site-nav{display:flex;align-items:center;flex-wrap:nowrap;white-space:nowrap}
.site-nav a{color:rgba(255,255,255,.82);font-size:13px;font-weight:500;margin-left:20px}
.site-nav a:first-child{margin-left:0}
.site-nav a:hover,.site-nav a.active{color:var(--gold3)}
.site-nav a.nav-office{color:var(--gold3)}
.btn-gold{display:inline-block;background:var(--gold3);color:var(--navy) !important;font-weight:600;font-size:13px;padding:9px 15px;border-radius:var(--rs);border:none;cursor:pointer}
.btn-gold:hover{background:#F3D67E;color:var(--navy) !important}
.site-nav .btn-gold{margin-left:20px}
.nav-toggle{display:none;background:none;border:1px solid rgba(255,255,255,.3);border-radius:6px;width:42px;height:38px;cursor:pointer;flex-direction:column;justify-content:center;align-items:center}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--gold3);margin:2px 0}
@media(max-width:860px){
  .nav-toggle{display:flex}
  .site-nav{position:absolute;top:100%;left:0;right:0;background:var(--navy);flex-direction:column;align-items:stretch;max-height:0;overflow:hidden;transition:max-height .25s ease}
  .site-nav.open{max-height:520px;padding:6px 20px 16px}
  .site-nav a{margin:0;padding:12px 0;border-bottom:1px solid rgba(255,255,255,.08);font-size:15px}
  .site-nav .btn-gold{margin:12px 0 0;text-align:center}
}

/* ---------- Tool page hero ---------- */
.tool-head{background:var(--navy);color:#fff;padding:20px 0 0}
.crumbs{font-size:12.5px;color:rgba(255,255,255,.6);margin-bottom:16px}
.crumbs a{color:rgba(255,255,255,.72)}
.crumbs a:hover{color:var(--gold3)}
.crumbs .sep{margin:0 7px;color:rgba(255,255,255,.3)}
.crumbs .cur{color:var(--gold3)}
.th-row{display:flex;align-items:center;padding-bottom:20px}
.th-ico{flex:0 0 auto;width:52px;height:52px;border:1px solid rgba(231,194,92,.4);border-radius:12px;display:flex;align-items:center;justify-content:center;margin-right:16px;color:var(--gold3)}
.th-ico svg{width:28px;height:28px}
.th-txt h1{font-size:30px;font-weight:600;letter-spacing:-.01em}
.th-tag{color:rgba(255,255,255,.74);font-size:15px;margin-top:2px;max-width:64ch}
@media(max-width:560px){.th-txt h1{font-size:24px}.th-ico{width:44px;height:44px}.th-ico svg{width:24px;height:24px}}

/* ---------- Main / panels ---------- */
.tool-main{padding:26px 0 8px}
.panel{background:var(--face);border:1px solid var(--line);border-radius:var(--r);padding:22px;margin-bottom:18px}
.panel h2{font-size:17px;margin-bottom:4px}
.panel .hint,.hint{color:var(--slate);font-size:13px}
.grid2,.grid3{display:flex;flex-wrap:wrap;margin:-9px}
.grid2>*{flex:1 1 300px;margin:9px;min-width:0}
.grid3>*{flex:1 1 200px;margin:9px;min-width:0}
.stack>*+*{margin-top:14px}
.row{display:flex;flex-wrap:wrap;align-items:center}
.row>*{margin:5px 10px 5px 0}
.spread{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap}
.spread>*{margin:4px 0}

/* ---------- Form controls ---------- */
label.lbl,.lbl{display:block;font-size:12.5px;font-weight:600;color:var(--slate);margin-bottom:6px}
input[type=text],input[type=number],input[type=url],input[type=password],input[type=date],input[type=search],select,textarea{
  width:100%;font-family:inherit;font-size:15px;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:var(--rs);padding:11px 12px;transition:border-color .15s,box-shadow .15s}
textarea{resize:vertical;min-height:120px;line-height:1.55}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--gold);box-shadow:0 0 0 3px rgba(180,131,28,.16)}
select{cursor:pointer}
.mono,textarea.mono,input.mono{font-family:var(--mono);font-size:13.5px}
.field{margin-bottom:14px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;font-family:inherit;font-weight:600;font-size:14px;padding:11px 17px;border-radius:var(--rs);border:1px solid transparent;cursor:pointer;transition:.15s;white-space:nowrap;line-height:1.1}
.btn.primary{background:var(--navy);color:#fff}
.btn.primary:hover{background:var(--navy3)}
.btn.ghost{background:#fff;border-color:var(--line);color:var(--navy)}
.btn.ghost:hover{border-color:var(--navy);background:var(--tint)}
.btn.navy{background:var(--navy);color:#fff}
.btn.navy:hover{background:var(--navy3)}
.btn.sm{padding:8px 12px;font-size:13px}
.btn.block{width:100%}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn+.btn{margin-left:8px}

/* Segmented control */
.seg{display:inline-flex;flex-wrap:wrap;background:var(--tint2);border-radius:var(--rs);padding:3px}
.seg button{border:none;background:none;font-family:inherit;font-size:13px;font-weight:600;color:var(--slate);padding:8px 14px;border-radius:5px;cursor:pointer;transition:.12s}
.seg button.on{background:#fff;color:var(--navy);box-shadow:var(--shadow)}
.seg.gold button.on{background:var(--navy);color:#fff}

/* Result / readout */
.result{background:var(--tint);border:1px solid var(--line);border-radius:var(--rs);padding:16px}
.result.big{text-align:center;padding:24px 16px}
.result .val{font-family:var(--mono);font-weight:600;font-variant-numeric:tabular-nums;font-size:40px;color:var(--navy);line-height:1.05;word-break:break-word;letter-spacing:-.02em}
.result .val.mono{font-size:26px}
.result .sub{color:var(--slate);font-size:13px;margin-top:8px}
.out-mono{font-family:var(--mono);font-size:13.5px;background:var(--navy);color:#e8eefb;border-radius:var(--rs);padding:14px;overflow:auto;white-space:pre-wrap;word-break:break-word;max-height:420px}
.copy-wrap{position:relative}
.copy-btn{position:absolute;top:8px;right:8px}
.chip{display:inline-flex;align-items:center;font-size:12.5px;font-weight:600;background:var(--tint2);color:var(--navy);padding:5px 11px;border-radius:20px;border:1px solid var(--line)}
.chip.gold{background:rgba(180,131,28,.1);border-color:rgba(180,131,28,.35);color:var(--gold2)}
.badge{display:inline-block;font-size:12px;font-weight:700;padding:3px 9px;border-radius:5px}
.badge.ok{background:rgba(14,124,91,.12);color:var(--green)}
.badge.err{background:rgba(179,50,43,.12);color:var(--red)}
table.tbl{width:100%;border-collapse:collapse;font-size:14px}
table.tbl th,table.tbl td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line)}
table.tbl th{font-size:12px;color:var(--slate);font-weight:600}
table.tbl td{font-variant-numeric:tabular-nums}
table.tbl tr:hover td{background:var(--tint)}
.scroll-x{overflow-x:auto}

/* Toast */
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%) translateY(16px);background:var(--navy);color:#fff;padding:12px 20px;border-radius:var(--rs);font-size:13.5px;font-weight:600;box-shadow:var(--shadow-lg);opacity:0;pointer-events:none;transition:.22s;z-index:600}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast .tk{color:var(--gold3);margin-right:6px}
.note{font-size:13px;color:var(--slate);background:var(--tint);border-left:3px solid var(--gold);border-radius:0 var(--rs) var(--rs) 0;padding:11px 14px}
.privacy{display:inline-flex;align-items:center;font-size:12.5px;color:var(--green);font-weight:600}

/* Prose */
.prose{max-width:66ch;margin:8px auto 0}
.prose h2{font-size:23px;margin:26px 0 10px;color:var(--navy);font-weight:600}
.prose h3{font-size:16px;margin:18px 0 6px}
.prose p,.prose li{color:#37475b;font-size:15px}
.prose ul,.prose ol{margin:8px 0 8px 22px}
.prose li{margin:4px 0}
.prose a{color:var(--gold2);text-decoration:underline}

/* FAQ */
.faq{max-width:800px;margin:32px auto 8px;padding:0 20px}
.faq h2{font-size:24px;text-align:center;margin-bottom:16px;color:var(--navy);font-weight:600}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--rs);margin-bottom:9px;overflow:hidden}
.faq-item summary{cursor:pointer;padding:15px 18px;font-weight:600;font-size:15px;list-style:none;position:relative;padding-right:44px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:after{content:'+';position:absolute;right:18px;top:12px;font-size:22px;color:var(--gold2);font-weight:400}
.faq-item[open] summary:after{content:'\2212'}
.faq-a{padding:0 18px 16px;color:#3a4c60;font-size:14.5px}
.faq-a a{color:var(--gold2);text-decoration:underline}

/* Related tools */
.related{max-width:1160px;margin:34px auto 10px;padding:0 20px}
.related h2{font-size:22px;text-align:center;margin-bottom:16px;color:var(--navy);font-weight:600}
.rel-grid{display:flex;flex-wrap:wrap;margin:-6px}
.rel-card{display:flex;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--rs);padding:11px 13px;margin:6px;flex:1 1 168px;min-width:0;transition:border-color .15s}
.rel-card:hover{border-color:var(--gold)}
.rel-ico{flex:0 0 auto;width:26px;height:26px;display:flex;align-items:center;justify-content:center;margin-right:10px;color:var(--gold2)}
.rel-ico svg{width:22px;height:22px}
.rel-name{font-size:13px;font-weight:600;color:var(--navy);line-height:1.25}

/* Footer */
footer{background:var(--navy);color:rgba(255,255,255,.62);padding:0 0 28px;font-size:12.5px;text-align:center;margin-top:34px}
footer .gold-bar{height:3px;background:var(--gold);margin-bottom:22px}
footer a{color:var(--gold3)}
footer .f-links{margin:11px 0}
footer .f-links a{margin:0 10px;line-height:2.1}

/* ---------- Hub ---------- */
.hub-hero{background:var(--navy);color:#fff;padding:48px 0 0}
.hub-hero h1{font-size:44px;font-weight:600;max-width:16ch;letter-spacing:-.02em}
.hub-hero p{color:rgba(255,255,255,.76);font-size:18px;max-width:56ch;margin:14px 0 26px}
.hub-search{max-width:540px;position:relative;margin-bottom:30px}
.hub-search input{background:#fff;border:none;padding:15px 16px 15px 46px;font-size:16px;border-radius:var(--rs)}
.hub-search .si{position:absolute;left:15px;top:50%;margin-top:-10px;width:20px;height:20px;color:var(--slate)}
.hub-search .si svg{width:20px;height:20px}
.hub-hero .rule{margin-bottom:0}
@media(max-width:560px){.hub-hero{padding:34px 0 0}.hub-hero h1{font-size:31px}.hub-hero p{font-size:16px}}

main{display:block}
.featured{max-width:1160px;margin:28px auto 0;padding:0 20px}
.feat-grid{display:flex;flex-wrap:wrap;margin:-8px}
.feat-card{display:flex;align-items:center;background:#fff;border:1px solid var(--line);border-left:3px solid var(--gold);border-radius:var(--r);padding:18px;margin:8px;flex:1 1 340px;min-width:0;transition:border-color .15s}
.feat-card:hover{border-color:var(--gold);border-left-color:var(--gold)}
.feat-ico{flex:0 0 auto;width:48px;height:48px;border-radius:10px;background:var(--navy);display:flex;align-items:center;justify-content:center;margin-right:15px;color:var(--gold3)}
.feat-ico svg{width:26px;height:26px}
.feat-card h3{font-size:16px;color:var(--navy);font-weight:600}
.feat-card p{font-size:13px;color:var(--slate);margin-top:2px}
.feat-card .go{font-size:12.5px;font-weight:600;color:var(--gold2);margin-top:5px;display:inline-block}

.cat-sec{max-width:1160px;margin:34px auto 0;padding:0 20px}
.cat-head{display:flex;align-items:baseline;margin-bottom:14px}
.cat-head h2{font-size:15px;font-weight:600;color:var(--slate);white-space:nowrap;letter-spacing:.02em;flex:0 0 auto;margin-right:14px}
.cat-head .rule{flex:1 1 auto}
.tool-grid{display:flex;flex-wrap:wrap;margin:-8px}
.tool-card{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px;margin:8px;flex:1 1 246px;min-width:0;transition:border-color .15s}
.tool-card:after{content:'';position:absolute;left:18px;right:18px;bottom:12px;height:6px;
  background-image:repeating-linear-gradient(90deg,var(--rule) 0 1px,transparent 1px 7px);
  background-repeat:repeat-x;background-position:bottom;background-size:100% 6px;opacity:.9;transition:.15s}
.tool-card:hover{border-color:var(--gold)}
.tool-card:hover:after{background-image:repeating-linear-gradient(90deg,var(--gold) 0 1px,transparent 1px 7px)}
.tool-card .tc-ico{width:44px;height:44px;border-radius:10px;background:var(--tint2);display:flex;align-items:center;justify-content:center;margin-bottom:13px;color:var(--gold2)}
.tool-card .tc-ico svg{width:24px;height:24px}
.tool-card h3{font-size:15.5px;color:var(--navy);margin-bottom:5px;font-weight:600}
.tool-card p{font-size:13px;color:var(--slate);line-height:1.5;flex:1 0 auto;padding-bottom:16px}
.tool-card.ext .tc-ico{background:var(--navy);color:var(--gold3)}
.tool-card .ext-tag{position:absolute;top:15px;right:15px;font-size:10px;font-weight:700;color:var(--gold2)}
.no-results{max-width:1160px;margin:20px auto;padding:0 20px;text-align:center;color:var(--slate);font-size:15px}

@media(prefers-reduced-motion:reduce){*{transition:none !important;scroll-behavior:auto !important}}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px}