:root{
  --bg:#fbf8f3;--paper:#ffffff;--ink:#1c2128;--body:#3a4250;--muted:#6b7280;--line:#e7e1d6;--soft:#f3eee5;
  --brand:#0f766e;--brand-dark:#0b5d56;--brand-soft:#e3f3f0;--accent:#f97316;--accent-soft:#fff1e6;
  --good:#15803d;--warn:#b45309;--bad:#b91c1c;
  --veml:#4d8dff;--veml-ink:#05070b;
  --display:"Bricolage Grotesque",ui-sans-serif,system-ui,sans-serif;
  --sans:"Inter",ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --r:14px;--shadow:0 1px 2px rgba(28,33,40,.05),0 8px 24px rgba(28,33,40,.06);
  --field:#fffdf9;--btn:#ffffff;--cell:#ffffff;--headbg:rgba(251,248,243,.92);--cta-bg:#1c2128;--cta-ink:#ffffff;--on-brand:#ffffff;--tmode-line:#bfe3dc;
  color-scheme:light;
}
:root[data-theme="dark"]{--bg:#0b0d10;--paper:#14171c;--ink:#eef1f5;--body:#c4cad3;--muted:#8d95a3;--line:#262b33;--soft:#1b1f26;
  --brand:#2dd4bf;--brand-dark:#5eead4;--brand-soft:#0f2e2b;--accent:#fb923c;--accent-soft:#2a1c10;
  --good:#4ade80;--warn:#fbbf24;--bad:#f87171;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.35);
  --field:#0f1216;--btn:#1b1f26;--cell:#14171c;--headbg:rgba(11,13,16,.9);--cta-bg:#4d8dff;--cta-ink:#05070b;--on-brand:#04201c;--tmode-line:#1d4a44;
  color-scheme:dark;}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#0b0d10;--paper:#14171c;--ink:#eef1f5;--body:#c4cad3;--muted:#8d95a3;--line:#262b33;--soft:#1b1f26;
  --brand:#2dd4bf;--brand-dark:#5eead4;--brand-soft:#0f2e2b;--accent:#fb923c;--accent-soft:#2a1c10;
  --good:#4ade80;--warn:#fbbf24;--bad:#f87171;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.35);
  --field:#0f1216;--btn:#1b1f26;--cell:#14171c;--headbg:rgba(11,13,16,.9);--cta-bg:#4d8dff;--cta-ink:#05070b;--on-brand:#04201c;--tmode-line:#1d4a44;
  color-scheme:dark;}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--brand)}a:hover{color:var(--brand-dark)}
img,svg{max-width:100%}
[hidden]{display:none!important}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.narrow{max-width:760px;margin:0 auto}
/* header */
.top{position:sticky;top:0;z-index:20;background:var(--headbg);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.logo{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--ink);font-family:var(--display);font-weight:700;font-size:1.35rem;letter-spacing:-.02em}
.logo .mark{width:30px;height:30px;border-radius:9px;background:var(--brand);display:grid;place-items:center;color:var(--on-brand)}
.logo b{color:var(--accent);font-weight:700}
.nav{display:flex;gap:4px;align-items:center}
.nav a{text-decoration:none;color:var(--body);font-weight:500;font-size:.95rem;padding:8px 12px;border-radius:9px}
.nav a:hover,.nav a.on{background:var(--soft);color:var(--ink)}
.nav a.cta{background:var(--cta-bg);color:var(--cta-ink)}.nav a.cta:hover{filter:brightness(1.1);background:var(--cta-bg);color:var(--cta-ink)}
.nav .sm{display:none}
@media (max-width:720px){.nav a:not(.cta):not(.keep){display:none}.top .wrap{height:58px;padding:0 14px;gap:8px}.nav{gap:2px}.nav a{padding:7px 8px;font-size:.9rem}.nav .lg{display:none}.nav .sm{display:inline}.logo{font-size:1.2rem;gap:7px}.logo .mark{width:26px;height:26px}}
/* hero */
.hero{padding:56px 0 28px;text-align:center}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--brand);background:var(--brand-soft);padding:5px 12px;border-radius:99px;margin-bottom:16px}
h1,h2,h3,h4{font-family:var(--display);letter-spacing:-.02em;color:var(--ink);line-height:1.15}
.hero h1{font-size:clamp(2.2rem,5.2vw,3.6rem);margin:0 auto 14px;max-width:16ch}
.hero h1 em{font-style:normal;color:var(--brand);background:linear-gradient(transparent 62%,var(--accent-soft) 62%)}
.hero p{font-size:1.15rem;color:var(--body);max-width:58ch;margin:0 auto}
.checks{display:flex;flex-wrap:wrap;justify-content:center;gap:8px 22px;list-style:none;padding:0;margin:20px 0 0;color:var(--body);font-size:.95rem}
.checks li::before{content:"✓";color:var(--brand);font-weight:700;margin-right:7px}
/* cards & tools */
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
.tool{padding:22px;margin:24px auto 0;max-width:900px}
.tool h2{margin:0 0 4px;font-size:1.35rem}
.tool .sub{margin:0 0 14px;color:var(--muted);font-size:.95rem}
textarea{width:100%;min-height:200px;resize:vertical;font-family:var(--mono);font-size:14px;line-height:1.55;padding:14px;border:1.5px solid var(--line);border-radius:11px;background:var(--field);color:var(--ink);outline:none}
textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-soft)}
textarea.drag{border-style:dashed;border-color:var(--brand);background:var(--brand-soft)}
textarea[readonly]{background:var(--soft);min-height:180px}
.opts{display:flex;flex-wrap:wrap;gap:10px 20px;margin:12px 0 4px;font-size:.95rem;color:var(--body)}
.opts label{display:flex;align-items:center;gap:7px;cursor:pointer}
input[type=checkbox],input[type=radio]{accent-color:var(--brand);width:17px;height:17px}
input[type=number],select{font:inherit;padding:8px 10px;border:1.5px solid var(--line);border-radius:9px;background:var(--btn);color:var(--ink);width:110px}
.row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:14px}
.btn{font:inherit;font-weight:600;font-size:.95rem;padding:11px 18px;border-radius:10px;border:1.5px solid var(--line);background:var(--btn);color:var(--ink);cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;gap:7px;line-height:1.2}
.btn:hover{border-color:var(--ink)}
.btn.primary{background:var(--brand);border-color:var(--brand);color:var(--on-brand)}.btn.primary:hover{background:var(--brand-dark)}
.btn.small{padding:7px 12px;font-size:.85rem}
.btn.ghost{background:transparent;border-color:transparent;color:var(--muted)}.btn.ghost:hover{color:var(--ink)}
.filebtn{position:relative;overflow:hidden}.filebtn input{position:absolute;inset:0;opacity:0;cursor:pointer}
.privacy{font-size:.85rem;color:var(--muted);margin:12px 0 0;display:flex;gap:7px;align-items:center}
.privacy::before{content:"🔒";font-size:.85rem}
.out{margin-top:22px;border-top:1px solid var(--line);padding-top:20px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px;margin-bottom:14px}
.stat{background:var(--soft);border-radius:11px;padding:12px 14px}
.stat b{display:block;font-family:var(--display);font-size:1.6rem;line-height:1.1}
.stat span{font-size:.85rem;color:var(--muted)}
.stat.st-good{background:var(--brand-soft)}.stat.st-good b{color:var(--brand-dark)}
.stat.st-warn{background:var(--accent-soft)}.stat.st-warn b{color:var(--warn)}
.notes{margin-top:14px;font-size:.92rem;max-height:340px;overflow:auto;border:1px solid var(--line);border-radius:11px;padding:4px 16px 12px;background:var(--field)}
.notes h4{margin:14px 0 6px;font-family:var(--sans);font-size:.9rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
.notes ul{margin:0;padding-left:18px}.notes li{margin:3px 0;overflow-wrap:anywhere}
.notes s{color:var(--bad)}
.muted{color:var(--muted)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:720px){.two{grid-template-columns:1fr}}
.two label.lbl{display:block;font-weight:600;margin-bottom:6px}
.modes{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 2px}
.modes label{border:1.5px solid var(--line);border-radius:10px;padding:8px 12px;cursor:pointer;background:var(--btn);font-size:.93rem;display:flex;gap:8px;align-items:center}
.modes label:has(input:checked){border-color:var(--brand);background:var(--brand-soft)}
table.ty{width:100%;border-collapse:collapse;font-size:.92rem;margin-top:6px}
table.ty td,table.ty th{border-bottom:1px solid var(--line);padding:8px 6px;text-align:left;overflow-wrap:anywhere}
.batch{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid var(--line);flex-wrap:wrap;font-size:.93rem}
.batch .row{margin:0}
/* veml box */
.veml{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:center;background:radial-gradient(120% 140% at 0% 0%,#0d1d45 0%,#05070b 65%);color:#dfe6f3;border-radius:var(--r);padding:24px 26px;margin:32px 0;border:1px solid #1d2a4d}
.veml .vlogo{font-family:Georgia,"Times New Roman",serif;font-size:2.1rem;color:var(--veml);text-shadow:0 0 18px rgba(77,141,255,.55);line-height:1}
.veml .vlogo span{color:#c9ced6;text-shadow:none}
.veml h3,.prose .veml h3{color:#fff;margin:0 0 4px;font-size:1.25rem}
.veml p,.prose .veml p{margin:0;color:#c3cde0;font-size:.96rem;line-height:1.55}
.veml strong{color:#fff}
.veml .btn{margin-top:12px;background:var(--veml);border-color:var(--veml);color:var(--veml-ink)}
.veml .btn:hover{background:#6ea2ff;border-color:#6ea2ff}
.veml .small{margin-top:8px;font-size:.8rem;color:#8fa0c4}
@media (max-width:560px){.veml{grid-template-columns:1fr;gap:8px}}
/* sections */
section.block{padding:56px 0}
section.block>.wrap>h2,.sechead h2{font-size:clamp(1.6rem,3.2vw,2.2rem);margin:0 0 8px}
.sechead{display:flex;justify-content:space-between;align-items:end;gap:16px;flex-wrap:wrap;margin-bottom:22px}
.sechead p{margin:0;color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.tcard,.gcard{display:flex;flex-direction:column;text-decoration:none;color:var(--ink);padding:20px;transition:transform .15s,box-shadow .15s}
.tcard:hover,.gcard:hover{transform:translateY(-2px);box-shadow:0 2px 4px rgba(28,33,40,.06),0 14px 32px rgba(28,33,40,.09);color:var(--ink)}
.tcard .ic{width:42px;height:42px;border-radius:11px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;margin-bottom:12px;font-size:1.2rem}
.tcard h3,.gcard h3{margin:0 0 6px;font-size:1.12rem}
.tcard p,.gcard p{margin:0;color:var(--muted);font-size:.93rem;line-height:1.55}
.gcard .cat{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--accent);margin-bottom:8px}
.gcard .more{margin-top:auto;padding-top:12px;font-weight:600;color:var(--brand);font-size:.92rem}
.pills{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px}
.pills button{font:inherit;font-size:.9rem;padding:7px 14px;border-radius:99px;border:1.5px solid var(--line);background:var(--btn);cursor:pointer;color:var(--body)}
.pills button.on{background:var(--ink);border-color:var(--ink);color:var(--bg)}
/* article */
.crumbs{font-size:.88rem;color:var(--muted);margin:28px 0 14px}
.crumbs a{color:var(--muted)}
article.guide h1{font-size:clamp(2rem,4.4vw,2.9rem);margin:0 0 12px}
.lede{font-size:1.15rem;color:var(--body)}
.meta{display:flex;flex-wrap:wrap;gap:6px 16px;color:var(--muted);font-size:.9rem;margin-bottom:22px}
.meta .cat{color:var(--accent);font-weight:700;text-transform:uppercase;letter-spacing:.06em;font-size:.78rem;align-self:center}
.toc{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin:22px 0 8px;font-size:.95rem}
.toc strong{display:block;margin-bottom:4px}
.toc ol{margin:0;padding-left:20px}.toc li{margin:3px 0}
.toc a{color:var(--body);text-decoration:none}.toc a:hover{color:var(--brand);text-decoration:underline}
.prose h2{font-size:1.65rem;margin:42px 0 10px;scroll-margin-top:84px}
.prose h3{font-size:1.25rem;margin:28px 0 8px}
.prose p,.prose li{color:var(--body)}
.prose li{margin:6px 0}
.prose code{font-family:var(--mono);font-size:.88em;background:var(--soft);border:1px solid var(--line);padding:2px 6px;border-radius:6px;overflow-wrap:anywhere}
.prose table{width:100%;border-collapse:collapse;margin:18px 0;font-size:.93rem;display:block;overflow-x:auto}
.prose th,.prose td{border:1px solid var(--line);padding:9px 11px;text-align:left;vertical-align:top}
.prose th{background:var(--soft);font-weight:600;color:var(--ink)}
.prose td{background:var(--cell)}
.tip,.warn{border-radius:12px;padding:14px 16px;margin:20px 0;font-size:.97rem}
.tip{background:var(--brand-soft);border-left:4px solid var(--brand)}
.warn{background:var(--accent-soft);border-left:4px solid var(--accent)}
.tip p,.warn p{margin:0}
.faq{margin-top:44px}
.faq details{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin:10px 0}
.faq summary{cursor:pointer;font-weight:600;color:var(--ink)}
.faq details p{margin:10px 0 0;color:var(--body)}
.sources{margin-top:34px;font-size:.88rem;color:var(--muted)}
.sources ul{padding-left:18px}.sources a{color:var(--muted);overflow-wrap:anywhere}
.related{margin:44px 0 0}
.updated{font-size:.85rem;color:var(--muted);margin-top:30px}
/* footer */
footer.site{margin-top:64px;border-top:1px solid var(--line);background:var(--paper)}
footer.site .wrap{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px;padding:40px 20px}
footer.site h4{margin:0 0 10px;font-family:var(--sans);font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
footer.site ul{list-style:none;padding:0;margin:0}footer.site li{margin:6px 0}
footer.site a{color:var(--body);text-decoration:none;font-size:.93rem}footer.site a:hover{color:var(--brand)}
footer.site p{color:var(--muted);font-size:.9rem;margin:10px 0 0;max-width:36ch}
.copy{border-top:1px solid var(--line);padding:16px 20px;color:var(--muted);font-size:.82rem;text-align:center}
@media (max-width:800px){footer.site .wrap{grid-template-columns:1fr 1fr}}
#toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%) translateY(10px);background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:10px;font-size:.92rem;opacity:0;transition:all .2s;pointer-events:none;z-index:50}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media (max-width:560px){body{font-size:16px}.tool{padding:16px}.hero{padding:36px 0 16px}}
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

.tmode{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;margin-top:10px;padding:10px 14px;border-radius:11px;background:var(--brand-soft);border:1px solid var(--tmode-line);font-size:.93rem;color:var(--ink)}
.tmode .tm-ic{color:var(--brand);font-size:1.1rem}
.tmode label{display:flex;align-items:center;gap:7px}
.tmode select{width:auto;max-width:220px;padding:5px 8px}
textarea.wide{white-space:pre;overflow-wrap:normal;overflow-x:auto}
.tprev{overflow-x:auto;border:1px solid var(--line);border-radius:11px;margin-bottom:10px;background:var(--cell)}
.tprev table{border-collapse:collapse;font-size:.85rem;min-width:100%}
.tprev th,.tprev td{padding:7px 10px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap;max-width:260px;overflow:hidden;text-overflow:ellipsis}
.tprev th{background:var(--soft);font-weight:600}
.small{font-size:.85rem}

.fig{margin:26px 0;padding:0}
.figscroll{overflow-x:auto;background:#fffdf9;border:1px solid var(--line);border-radius:14px;padding:14px}
.fig svg{display:block;width:100%;height:auto;max-width:100%}
.fig figcaption{font-size:.9rem;color:var(--muted);margin-top:8px;line-height:1.5}
.fig figcaption code{font-size:.82em}

.author{display:flex;gap:16px;align-items:flex-start;background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:18px;margin-top:34px}
.author .av{flex:none;width:52px;height:52px;border-radius:50%;background:var(--brand);color:var(--on-brand);display:grid;place-items:center;font-family:var(--display);font-weight:700;font-size:1.1rem}
.author p{margin:4px 0 0;color:var(--body);font-size:.95rem}
.meta a{color:var(--muted)}


.themebtn{font:inherit;width:36px;height:36px;border-radius:10px;border:1.5px solid var(--line);background:var(--btn);color:var(--ink);cursor:pointer;display:grid;place-items:center;padding:0;flex:none}
.themebtn:hover{border-color:var(--ink)}
.themebtn .sun{display:none}
:root[data-theme="dark"] .themebtn .sun{display:block}:root[data-theme="dark"] .themebtn .moon{display:none}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .themebtn .sun{display:block}:root:not([data-theme="light"]) .themebtn .moon{display:none}}
/* figures stay light (they show spreadsheets); give them a soft frame in dark mode */
:root[data-theme="dark"] .figscroll{border-color:#2b3038}
@media (max-width:720px){.themebtn{width:32px;height:32px}}
@media (max-width:380px){.nav a.keep:first-child{display:none}}