/* tevana.online — self-hosted styles, system fonts only, no external requests */
:root{
  --bg:#f4f5f2; --surface:#ffffff; --surface-2:#e9ebe4; --soft:#dfe3d8; --line:#cbd1c1;
  --ink:#1b1f1a; --muted:#5e6656; --brand:#4b6b2f; --brand-dark:#3a5424; --brand-ink:#ffffff;
  --accent:#e8c877; --warn-bg:#fff7e0; --warn-line:#e0c56e;
  --radius:14px; --shadow:0 1px 2px rgba(27,31,26,.06),0 8px 24px rgba(27,31,26,.06);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --wrap:1160px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:clamp(1rem,.97rem + .2vw,1.075rem);line-height:1.7}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-underline-offset:2px}
a:hover{color:var(--brand-dark)}
h1,h2,h3,h4{line-height:1.25;letter-spacing:-.01em;margin:0 0 .6em}
h1{font-size:clamp(1.9rem,1.4rem + 2.2vw,2.9rem);letter-spacing:-.02em}
h2{font-size:clamp(1.4rem,1.2rem + .9vw,1.85rem);margin-top:2.2em;padding-top:.2em;scroll-margin-top:80px}
h3{font-size:1.18rem;margin-top:1.6em}
p,ul,ol,table,figure{margin:0 0 1.1em}
ul,ol{padding-left:1.3em}
li{margin-bottom:.35em}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:8px 14px;z-index:50}
.skip:focus{left:8px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}

/* disclosure bar */
.adbar{background:var(--ink);color:#f1f3ec;font-size:.85rem;line-height:1.45;padding:8px 0;text-align:center}
.adbar a{color:var(--accent)}

/* header */
.site-header{background:rgba(244,245,242,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:saturate(1.4) blur(8px)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;color:var(--ink);text-decoration:none;letter-spacing:-.02em}
.brand img{width:34px;height:34px}
.brand small{display:block;font-weight:500;font-size:.72rem;color:var(--muted);letter-spacing:0}
.nav{display:flex;gap:4px;flex-wrap:wrap}
.nav a{color:var(--ink);text-decoration:none;padding:6px 12px;border-radius:999px;font-size:.93rem;font-weight:500}
.nav a:hover,.nav a[aria-current="page"]{background:var(--soft);color:var(--ink)}

/* layout */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;padding:40px 0 64px}
.layout.single{grid-template-columns:minmax(0,760px);justify-content:center}
.content{min-width:0}
.sidebar{position:relative}
.sidebar .sticky{position:sticky;top:84px;display:flex;flex-direction:column;gap:18px}
@media (max-width:960px){.layout{grid-template-columns:minmax(0,1fr);gap:32px}.sidebar .sticky{position:static}}

/* article header */
.eyebrow{display:inline-block;font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--brand);margin-bottom:10px}
.lede{font-size:1.18em;color:#333a31}
.meta{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:.9rem;color:var(--muted);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:10px 0;margin-bottom:24px}
.meta strong{color:var(--ink)}

/* boxes */
.box{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;margin:0 0 24px;box-shadow:var(--shadow)}
.box h3,.box h4{margin-top:0}
.box p:last-child,.box ul:last-child{margin-bottom:0}
.disclosure{background:var(--warn-bg);border:1px solid var(--warn-line);border-left:5px solid #c9a227;border-radius:var(--radius);padding:14px 18px;font-size:.95rem;margin:0 0 28px}
.disclosure p{margin:0}
.note{font-size:.9rem;color:var(--muted)}
.callout{background:var(--surface-2);border-radius:var(--radius);padding:16px 20px;margin:0 0 1.2em}
.callout p:last-child{margin:0}
.toc ol{margin:0;padding-left:1.2em;font-size:.94rem}
.toc a{color:var(--ink);text-decoration:none}
.toc a:hover{color:var(--brand);text-decoration:underline}
.facts dl{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;margin:0;font-size:.93rem}
.facts dt{color:var(--muted)}
.facts dd{margin:0;font-weight:600}

/* figures */
figure{margin:28px 0}
figure img{border-radius:var(--radius);border:1px solid var(--line);background:#fff;width:100%}
figcaption{font-size:.88rem;color:var(--muted);margin-top:8px}

/* tables */
.table-wrap{overflow-x:auto;margin:0 0 1.2em}
table{border-collapse:collapse;width:100%;font-size:.94rem;background:var(--surface);border-radius:var(--radius);overflow:hidden}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--soft);vertical-align:top}
th{background:var(--surface-2);font-weight:700}

/* call to action */
.cta{background:linear-gradient(135deg,#eef2e6,#e3e9d8);border:1px solid var(--line);border-radius:18px;padding:22px;margin:32px 0;text-align:center}
.cta p{margin:0}
.cta-title{font-weight:700;font-size:1.1rem;margin-bottom:12px!important}
.btn{display:inline-flex;flex-direction:column;align-items:center;gap:2px;background:var(--brand);color:var(--brand-ink);text-decoration:none;font-weight:700;font-size:1.02rem;padding:12px 26px;border-radius:12px;box-shadow:0 2px 0 var(--brand-dark);transition:background .15s}
.btn:hover{background:var(--brand-dark);color:#fff}
.btn:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.btn .tag{font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;opacity:.9}
.btn-block{width:100%}
.cta-note{font-size:.82rem;color:var(--muted);margin-top:10px!important;line-height:1.45}
.sidebar .cta{margin:0;padding:18px}

/* cards grid */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:0 0 1.4em}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.card h3{margin-top:0;font-size:1.05rem}
.card p{margin:0;font-size:.95rem}

/* footer */
.site-footer{background:var(--ink);color:#cfd5c7;font-size:.9rem;padding:40px 0 28px;margin-top:auto}
.site-footer a{color:#fff}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}
@media (max-width:760px){.foot-grid{grid-template-columns:1fr}}
.site-footer h4{color:#fff;font-size:.95rem;margin-bottom:10px}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:6px}
.site-footer address{font-style:normal;line-height:1.6}
.foot-legal{border-top:1px solid #3a4137;margin-top:28px;padding-top:18px;font-size:.82rem;line-height:1.55;color:#aeb5a6}
.foot-legal p{margin:0 0 8px}
.glossary dt{margin-top:12px}
.glossary dt:first-child{margin-top:0}
.glossary dd{margin:2px 0 0;color:#333a31}
kbd{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.85em;background:var(--surface-2);border:1px solid var(--line);border-radius:4px;padding:1px 5px}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em}