/* teneron.online – self-hosted, system fonts only, no external requests */
:root{
  --bg:#f6f7fb;--surface:#ffffff;--ink:#0f172a;--muted:#475569;--line:#e2e8f0;
  --brand:#0b7a5c;--brand-ink:#ffffff;--brand-soft:#e7f6f0;--accent:#3346c9;--accent-soft:#eef2ff;
  --warn:#92400e;--warn-soft:#fef7e6;--radius:16px;--shadow:0 1px 2px rgba(15,23,42,.05),0 8px 24px rgba(15,23,42,.06);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --serif:Charter,"Bitstream Charter","Sitka Text",Cambria,Georgia,serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  color-scheme:light dark;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0b1120;--surface:#111a2e;--ink:#e5e9f0;--muted:#a3adbf;--line:#24314a;
    --brand:#2fbf8f;--brand-ink:#04140e;--brand-soft:#0f2a24;--accent:#8fa0ff;--accent-soft:#1a2244;
    --warn:#fbbf24;--warn-soft:#2a2111;--shadow:none}
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 var(--font)}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-underline-offset:.18em}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:var(--bg);padding:8px 14px;z-index:10}
.skip:focus{left:8px;top:8px}
.container{width:min(1160px,100% - 32px);margin-inline:auto}

/* disclosure bar */
.ad-bar{background:var(--ink);color:var(--bg);font-size:14px;line-height:1.45}
.ad-bar .container{padding:9px 0;display:flex;gap:10px;align-items:baseline;flex-wrap:wrap}
.ad-bar strong{font-weight:700;letter-spacing:.02em}
.ad-bar a{color:inherit}

/* header */
.site-header{background:var(--surface);border-bottom:1px solid var(--line)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:800;font-size:20px;letter-spacing:-.01em}
.brand img{width:34px;height:34px}
.brand span{color:var(--muted);font-weight:500}
.nav ul{list-style:none;margin:0;padding:0;display:flex;gap:4px;flex-wrap:wrap}
.nav a{display:block;padding:8px 12px;border-radius:10px;color:var(--ink);text-decoration:none;font-size:15px;font-weight:600}
.nav a:hover,.nav a[aria-current="page"]{background:var(--brand-soft);color:var(--brand)}
.menu summary{display:none}
@media (max-width:820px){
  .menu summary{display:block;cursor:pointer;list-style:none;padding:8px 14px;border:1px solid var(--line);border-radius:10px;font-weight:600;font-size:15px}
  .menu summary::-webkit-details-marker{display:none}
  .menu:not([open]) .nav{display:none}
  .menu[open] .nav{position:absolute;left:16px;right:16px;margin-top:10px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:8px;box-shadow:var(--shadow);z-index:5}
  .menu[open] .nav ul{flex-direction:column}
  .site-header .container{position:relative}
}
@media (min-width:821px){.menu .nav{display:block!important}}

/* layout */
.page{padding:36px 0 64px}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start}
.layout > main{grid-column:1;grid-row:1}
.layout > aside{grid-column:2;grid-row:1;position:sticky;top:20px}
@media (max-width:980px){.layout{grid-template-columns:1fr}.layout > aside{grid-column:1;grid-row:2;position:static}}
.narrow{max-width:780px}

/* typography */
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--brand);margin-bottom:8px}
h1{font-size:clamp(30px,2.2vw + 18px,46px);line-height:1.12;letter-spacing:-.02em;margin:0 0 18px}
h2{font-size:clamp(23px,1vw + 17px,30px);line-height:1.2;letter-spacing:-.01em;margin:48px 0 14px}
h3{font-size:20px;line-height:1.3;margin:28px 0 8px}
p,ul,ol{margin:0 0 16px}
li{margin-bottom:6px}
.lead{font-size:20px;color:var(--muted);line-height:1.55}
.article{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:clamp(20px,4vw,48px);box-shadow:var(--shadow)}
.article p,.article li{font-family:var(--serif);font-size:18.5px}
.article .box p,.article .box li,.article .cta-block p,.article table,.article figcaption,.article .faq p{font-family:var(--font);font-size:16px}
.byline{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:14.5px;color:var(--muted);margin:18px 0 26px;padding:14px 0;border-block:1px solid var(--line)}
.byline strong{color:var(--ink)}

/* boxes */
.box{border-radius:var(--radius);padding:18px 20px;margin:22px 0;border:1px solid var(--line);background:var(--surface)}
.box > :last-child{margin-bottom:0}
.box-title{font-weight:800;font-size:15px;letter-spacing:.02em;margin:0 0 6px;display:block}
.box.disclosure{background:var(--warn-soft);border-color:#f2d59b;color:var(--ink)}
.box.disclosure .box-title{color:var(--warn)}
.box.summary{background:var(--brand-soft);border-color:transparent}
.box.note{background:var(--accent-soft);border-color:transparent}
.box ul{padding-left:20px}

/* figures */
figure{margin:30px 0}
figure img{width:100%;border-radius:16px;border:1px solid var(--line);background:#fff}
figcaption{font-size:14.5px;color:var(--muted);margin-top:10px;line-height:1.5}
figcaption b{color:var(--ink)}

/* tables */
.table-wrap{overflow-x:auto;margin:20px 0;border:1px solid var(--line);border-radius:14px}
table{border-collapse:collapse;width:100%;font-size:15.5px;min-width:520px}
th,td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--bg);font-weight:700}
tr:last-child td{border-bottom:0}

/* CTA */
.cta-block{margin:30px 0;padding:22px;border-radius:var(--radius);background:var(--bg);border:1px dashed var(--line);text-align:center}
.cta-block .cta-intro{font-weight:600;margin-bottom:12px}
.btn{display:inline-flex;flex-direction:column;align-items:center;gap:2px;padding:13px 26px;border-radius:12px;background:var(--brand);color:var(--brand-ink);font:700 17px/1.25 var(--font);text-decoration:none;border:0;box-shadow:0 2px 0 rgba(0,0,0,.12)}
.btn:hover{filter:brightness(1.07);text-decoration:none}
.btn-label{font-size:11.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;opacity:.9;padding:1px 8px;border-radius:999px;background:rgba(255,255,255,.18)}
.btn.block{display:flex;width:100%}
.cta-note{font-size:13.5px!important;color:var(--muted);margin:10px 0 0!important;line-height:1.45}

/* sidebar */
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:20px;margin-bottom:18px;box-shadow:var(--shadow)}
.side-card h2{font-size:17px;margin:0 0 10px}
.toc ol{padding-left:20px;margin:0;font-size:15px}
.toc li{margin-bottom:5px}
.toc a{color:var(--ink);text-decoration:none}
.toc a:hover{color:var(--brand);text-decoration:underline}
.side-card .ticks{list-style:none;padding:0;font-size:15px}
.side-card .ticks li{padding-left:24px;position:relative}
.side-card .ticks li::before{content:"";position:absolute;left:4px;top:.55em;width:9px;height:9px;border-radius:50%;background:var(--brand)}
.side-card .small{font-size:13.5px;color:var(--muted)}

/* FAQ */
.faq details{border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin-bottom:10px;background:var(--surface)}
.faq summary{cursor:pointer;font-weight:700;font-family:var(--font)}
.faq details[open] summary{margin-bottom:8px}

.sources{font-size:15px!important}
.sources li{font-family:var(--font)!important;font-size:15px!important;word-break:break-word}

/* simple pages */
.doc{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:clamp(20px,4vw,48px);box-shadow:var(--shadow)}
.doc h2:first-of-type{margin-top:32px}
.facts{display:grid;grid-template-columns:max-content 1fr;gap:8px 22px;margin:18px 0;padding:18px 20px;border-radius:14px;background:var(--bg)}
.facts dt{font-weight:700}
.facts dd{margin:0}
@media (max-width:560px){.facts{grid-template-columns:1fr}.facts dd{margin-bottom:8px}}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;margin:24px 0}
.card{border:1px solid var(--line);border-radius:16px;padding:18px;background:var(--bg)}
.card h3{margin-top:0}
code,kbd{font-family:var(--mono);font-size:.9em;background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:1px 6px}

/* footer */
.site-footer{background:#0b1120;color:#cbd5e1;padding:48px 0 28px;font-size:15px}
.site-footer a{color:#e2e8f0}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
@media (max-width:760px){.foot-grid{grid-template-columns:1fr}}
.site-footer h2{font-size:14px;letter-spacing:.08em;text-transform:uppercase;color:#94a3b8;margin:0 0 12px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer address{font-style:normal;line-height:1.7}
.foot-legal{border-top:1px solid #1e293b;margin-top:32px;padding-top:20px;font-size:13.5px;color:#94a3b8;line-height:1.6}
.foot-legal p{margin:0 0 8px}

.center{text-align:center}
.muted{color:var(--muted)}