/* orviden.online — original stylesheet. No external resources, no web fonts.
   System font stack only; nothing is fetched from a third-party host. */

:root{
  --ink:#0f172a;
  --ink-2:#334155;
  --muted:#5b6b82;
  --bg:#ffffff;
  --surface:#f7f9fc;
  --surface-2:#eef2f9;
  --line:#dfe6f1;
  --line-soft:#eaeff7;
  --brand:#4338ca;
  --brand-2:#4f46e5;
  --brand-ink:#312e81;
  --brand-wash:#eef0ff;
  --teal:#0d7d72;
  --teal-wash:#e6f4f2;
  --amber:#8a5a00;
  --amber-wash:#fff6e3;
  --amber-line:#f0d49a;
  --radius:14px;
  --radius-s:9px;
  --shadow:0 1px 2px rgba(15,23,42,.05), 0 8px 24px -12px rgba(15,23,42,.18);
  --shadow-lg:0 2px 4px rgba(15,23,42,.05), 0 20px 48px -20px rgba(15,23,42,.28);
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif;
  --serif:Georgia,"Times New Roman",Times,"Liberation Serif",serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --wrap:1180px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}

img,svg{max-width:100%;height:auto;display:block}
a{color:var(--brand);text-underline-offset:2px}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.25;color:var(--ink);margin:0 0 .5em;letter-spacing:-.015em}
h1{font-size:clamp(1.9rem,1.35rem + 2.1vw,3rem);font-weight:800}
h2{font-size:clamp(1.45rem,1.2rem + 1vw,2rem);font-weight:750;margin-top:2.2em}
h3{font-size:clamp(1.15rem,1.05rem + .45vw,1.35rem);font-weight:700;margin-top:1.8em}
h4{font-size:1.02rem;font-weight:700}
p{margin:0 0 1.15em}
ul,ol{margin:0 0 1.2em;padding-left:1.3em}
li{margin:.4em 0}
strong{font-weight:680;color:var(--ink)}
hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}
code{font-family:var(--mono);font-size:.9em;background:var(--surface-2);padding:.12em .38em;border-radius:5px}

:focus-visible{outline:3px solid var(--brand-2);outline-offset:2px;border-radius:4px}

.skip{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:.7rem 1.1rem;z-index:100;border-radius:0 0 8px 0}
.skip:focus{left:0}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}

/* ---------- Affiliate disclosure bar (above the fold, before all content) ---------- */
.disclosure-bar{
  background:var(--brand-ink);
  color:#e7e9ff;
  font-size:.86rem;
  line-height:1.5;
  padding:.62rem 0;
}
.disclosure-bar .wrap{display:flex;gap:.6rem;align-items:flex-start}
.disclosure-bar svg{flex:0 0 auto;margin-top:.15rem}
.disclosure-bar a{color:#fff;text-decoration:underline}

/* ---------- Header ---------- */
.site-head{
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(1.6) blur(8px);
  border-bottom:1px solid var(--line-soft);
  position:sticky;top:0;z-index:50;
}
.site-head .wrap{display:flex;align-items:center;gap:1rem;min-height:66px}
.brand{display:inline-flex;align-items:center;gap:.6rem;font-weight:800;font-size:1.18rem;color:var(--ink);text-decoration:none;letter-spacing:-.02em}
.brand:hover{text-decoration:none}
.brand-mark{width:30px;height:30px;flex:0 0 auto}
.brand-sub{display:block;font-size:.66rem;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin-top:-2px}
.nav{margin-left:auto;display:flex;gap:.2rem;flex-wrap:wrap;align-items:center}
.nav a{
  color:var(--ink-2);text-decoration:none;font-size:.93rem;font-weight:560;
  padding:.45rem .72rem;border-radius:8px;
}
.nav a:hover{background:var(--surface-2);color:var(--brand);text-decoration:none}
.nav a[aria-current="page"]{color:var(--brand);background:var(--brand-wash)}
.nav-toggle{
  display:none;margin-left:auto;background:var(--surface);border:1px solid var(--line);
  border-radius:9px;padding:.45rem .7rem;font-size:.9rem;font-weight:600;color:var(--ink-2);cursor:pointer;
}
@media (max-width:860px){
  /* The toggle only appears when scripting is available; without it the nav
     stays open, so the site is fully navigable with JavaScript disabled. */
  .js .nav-toggle{display:inline-block}
  .nav{
    margin-left:0;order:3;width:100%;flex-direction:column;align-items:stretch;
    gap:0;padding:.4rem 0 .8rem;border-top:1px solid var(--line-soft);
  }
  .js .nav:not([data-open]){display:none}
  .nav a{padding:.6rem .5rem;border-radius:6px}
  .site-head .wrap{flex-wrap:wrap}
}

/* ---------- Layout ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 322px;gap:52px;align-items:start;padding:34px 0 56px}
@media (max-width:1000px){.layout{grid-template-columns:minmax(0,1fr);gap:40px}}
.article{min-width:0;max-width:74ch}
.page{max-width:76ch;padding:34px 0 60px}
.rail{position:sticky;top:86px;display:flex;flex-direction:column;gap:20px}
@media (max-width:1000px){.rail{position:static}}

/* ---------- Article head ---------- */
.eyebrow{
  display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:var(--teal);background:var(--teal-wash);padding:.3rem .62rem;border-radius:999px;margin-bottom:1rem;
}
.standfirst{font-size:1.18rem;line-height:1.6;color:var(--ink-2);margin:0 0 1.5rem}
.byline{
  display:flex;flex-wrap:wrap;gap:.5rem 1.1rem;align-items:center;
  font-size:.88rem;color:var(--muted);border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line-soft);padding:.85rem 0;margin:0 0 1.8rem;
}
.byline .who{color:var(--ink-2);font-weight:640}
.byline .dot{color:var(--line);}

/* ---------- Disclosure box after H1 ---------- */
.disclosure-box{
  background:var(--amber-wash);border:1px solid var(--amber-line);border-left:4px solid var(--amber);
  border-radius:var(--radius-s);padding:1rem 1.15rem;margin:0 0 1.9rem;font-size:.93rem;line-height:1.6;
}
.disclosure-box h2,.disclosure-box h3{
  margin:0 0 .4rem;font-size:.88rem;letter-spacing:.06em;text-transform:uppercase;color:var(--amber);
}
.disclosure-box p{margin:0 0 .6rem;color:#5b4413}
.disclosure-box p:last-child{margin:0}

/* ---------- Table of contents ---------- */
.toc{background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--radius);padding:1.1rem 1.25rem}
.toc h2{font-size:.78rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin:0 0 .6rem}
.toc ol{margin:0;padding-left:1.2rem;font-size:.92rem}
.toc li{margin:.35em 0}
.toc a{color:var(--ink-2);text-decoration:none}
.toc a:hover{color:var(--brand);text-decoration:underline}

/* ---------- Figures ---------- */
figure{margin:2rem 0;padding:0}
figure .frame{
  background:var(--surface);border:1px solid var(--line-soft);border-radius:var(--radius);
  padding:14px;overflow:hidden;
}
figure img{width:100%}
figcaption{font-size:.86rem;color:var(--muted);margin-top:.65rem;line-height:1.55}
figcaption b{color:var(--ink-2);font-weight:640}

/* ---------- Callouts ---------- */
.note{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-s);
  padding:1rem 1.15rem;margin:1.6rem 0;font-size:.95rem;
}
.note p:last-child{margin:0}
.note--fact{background:var(--teal-wash);border-color:#bfe0dc}
.note--fact h3{margin:0 0 .45rem;font-size:.82rem;letter-spacing:.07em;text-transform:uppercase;color:var(--teal)}
.note--trademark{font-size:.87rem;color:var(--muted)}

.keypoints{background:var(--brand-wash);border:1px solid #d9dcfb;border-radius:var(--radius);padding:1.2rem 1.4rem;margin:1.8rem 0}
.keypoints h2{margin:0 0 .6rem;font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;color:var(--brand-ink)}
.keypoints ul{margin:0;padding-left:1.15rem}
.keypoints li{margin:.45em 0;color:var(--ink-2)}

/* ---------- Tables ---------- */
.table-scroll{overflow-x:auto;margin:1.7rem 0;border:1px solid var(--line);border-radius:var(--radius)}
table{border-collapse:collapse;width:100%;font-size:.93rem;min-width:520px}
th,td{text-align:left;padding:.75rem .9rem;border-bottom:1px solid var(--line-soft);vertical-align:top}
thead th{background:var(--surface-2);font-size:.78rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:700}
tbody tr:last-child td{border-bottom:0}

/* ---------- Call to action ---------- */
.cta{
  background:linear-gradient(180deg,#fbfcff,#f2f4fd);
  border:1px solid #dcdffa;border-radius:var(--radius);
  padding:1.4rem 1.5rem;margin:2.2rem 0;box-shadow:var(--shadow);
}
.cta h2{margin:0 0 .45rem;font-size:1.12rem;font-weight:740}
.cta p{font-size:.95rem;color:var(--ink-2);margin:0 0 1rem}
.btn{
  display:block;width:100%;text-align:center;text-decoration:none;
  background:var(--brand-2);color:#fff;font-weight:700;font-size:1.02rem;
  padding:.92rem 1.3rem;border-radius:10px;border:1px solid var(--brand);
  box-shadow:0 1px 0 rgba(255,255,255,.18) inset,0 8px 18px -10px rgba(67,56,202,.75);
}
.btn:hover{background:var(--brand);text-decoration:none}
.btn .btn-label{
  display:block;font-size:.74rem;font-weight:600;letter-spacing:.07em;text-transform:uppercase;
  opacity:.88;margin-top:.3rem;
}
.btn--ghost{background:#fff;color:var(--brand);border:1.5px solid var(--brand-2);box-shadow:none;font-size:.96rem;padding:.75rem 1rem}
.btn--ghost:hover{background:var(--brand-wash);color:var(--brand-ink)}
.cta-note{font-size:.82rem;color:var(--muted);margin:.7rem 0 0;line-height:1.55}

/* ---------- Sidebar cards ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem 1.3rem;box-shadow:var(--shadow)}
.card h2{margin:0 0 .55rem;font-size:1.05rem;font-weight:740}
.card h3{margin:0 0 .5rem;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.card p{font-size:.92rem;color:var(--ink-2)}
.card ul{font-size:.92rem;padding-left:1.1rem;color:var(--ink-2)}
.card--offer{border-color:#d9dcfb;background:linear-gradient(180deg,#fff,#f8f9ff)}
.card-links{list-style:none;padding:0;margin:0;font-size:.93rem}
.card-links li{margin:0;border-bottom:1px solid var(--line-soft)}
.card-links li:last-child{border-bottom:0}
.card-links a{display:block;padding:.5rem 0;color:var(--ink-2);text-decoration:none}
.card-links a:hover{color:var(--brand)}

/* ---------- Partner link label ---------- */
.partner-tag{
  display:inline-flex;align-items:center;gap:.35rem;font-size:.72rem;font-weight:700;
  letter-spacing:.07em;text-transform:uppercase;color:var(--amber);background:var(--amber-wash);
  border:1px solid var(--amber-line);border-radius:999px;padding:.18rem .55rem;margin-bottom:.6rem;
}

/* ---------- Guide cards grid ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));gap:20px;margin:1.8rem 0}
.grid .card h2{font-size:1.02rem}
.grid .card p{margin-bottom:.6rem}
.grid .card a.more{font-size:.9rem;font-weight:640;text-decoration:none}
.grid .card a.more:hover{text-decoration:underline}

/* ---------- Definition-style legal blocks ---------- */
.factbox{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.2rem 1.4rem;margin:1.6rem 0}
.factbox dl{margin:0;display:grid;grid-template-columns:minmax(150px,auto) 1fr;gap:.55rem 1.2rem;font-size:.95rem}
.factbox dt{font-weight:660;color:var(--muted)}
.factbox dd{margin:0;color:var(--ink)}
@media (max-width:560px){.factbox dl{grid-template-columns:1fr;gap:.15rem}.factbox dd{margin-bottom:.6rem}}

/* ---------- Footer ---------- */
.site-foot{background:var(--ink);color:#c3cede;font-size:.9rem;padding:44px 0 32px;margin-top:40px}
.site-foot a{color:#e5ebf5;text-decoration:none}
.site-foot a:hover{text-decoration:underline}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:34px}
@media (max-width:820px){.foot-grid{grid-template-columns:1fr 1fr;gap:26px}}
@media (max-width:520px){.foot-grid{grid-template-columns:1fr}}
.foot-grid h2{color:#fff;font-size:.78rem;letter-spacing:.09em;text-transform:uppercase;margin:0 0 .75rem;font-weight:700}
.foot-grid ul{list-style:none;padding:0;margin:0}
.foot-grid li{margin:.35em 0}
.foot-id{font-style:normal;line-height:1.65;color:#aab8cb}
.foot-id b{color:#fff;font-weight:650}
.foot-bottom{border-top:1px solid #23324a;margin-top:32px;padding-top:20px;font-size:.83rem;color:#93a3b8;line-height:1.65}
.foot-bottom p{margin:0 0 .6rem}
.foot-bottom p:last-child{margin:0}

/* ---------- 404 ---------- */
.notfound{text-align:center;padding:80px 0}
.notfound h1{font-size:clamp(2rem,1.4rem + 2.4vw,3rem)}
.notfound .code{font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);font-weight:700}

/* Visually hidden (kept available to screen readers) */
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}