/* Shared styles for OpenPubFiles content pages (guides). The home page keeps its own inline CSS. */
:root{
  --ink:#0f172a; --ink-2:#334155; --muted:#475569; --line:#dbe3ec; --line-2:#c9d4e1;
  --bg:#f8fafc; --surface:#ffffff; --soft:#eef3f8; --navy:#0f2a4a;
  --brand:#1d4ed8; --brand-soft:#e7eefc;
  --cta:#c2410c; --cta-hover:#a3360a; --on-cta:#ffffff;
  --ok:#15803d; --ok-ink:#166534; --ok-soft:#e8f5ec; --no:#b91c1c; --no-soft:#fdecec; --warn-soft:#fff7e6; --warn-ink:#7c2d12;
  --radius:16px; --shadow:0 1px 2px rgba(15,23,42,.06),0 10px 30px rgba(15,23,42,.08);
  --focus:0 0 0 3px #ffffff,0 0 0 6px #1d4ed8;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:18px/1.7 "Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-underline-offset:3px}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:none;box-shadow:var(--focus);border-radius:10px}
.ic{width:24px;height:24px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.ic-sm{width:20px;height:20px}
.skip{position:absolute;left:16px;top:-60px;background:var(--navy);color:#fff;padding:12px 16px;border-radius:10px;z-index:100;text-decoration:none}
.skip:focus{top:12px}

/* header / footer */
.top{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.95);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.top .bar{max-width:1140px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.2rem;color:var(--ink);text-decoration:none}
.logo svg{width:32px;height:32px}
.top .btn{min-height:46px;padding:0 20px;font-size:1rem}
footer{padding:40px 24px 110px;color:var(--muted);font-size:.95rem;background:var(--surface);border-top:1px solid var(--line);margin-top:64px}
footer .bar{max-width:1140px;margin:0 auto;display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px}
footer a{color:var(--ink-2)}
.legal{flex-basis:100%;font-size:.85rem}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:56px;padding:0 28px;border-radius:12px;font-family:inherit;font-weight:700;font-size:1.08rem;line-height:1.2;text-decoration:none;border:2px solid transparent;cursor:pointer;transition:background-color .18s ease,border-color .18s ease,transform .18s ease;touch-action:manipulation}
.btn-cta{background:var(--cta);color:var(--on-cta)}
.btn-cta:hover{background:var(--cta-hover)}
.btn-cta:active{transform:scale(.98)}
.btn-outline{background:var(--surface);color:var(--navy);border-color:var(--line-2)}
.btn-outline:hover{border-color:var(--navy)}

/* article */
.article{max-width:780px;margin:0 auto;padding:32px 24px 0}
.crumbs{font-size:.92rem;color:var(--muted);margin-bottom:18px}
.crumbs a{color:var(--muted)}
.article h1{font-size:clamp(2rem,4.4vw,2.9rem);line-height:1.15;letter-spacing:-.015em;font-weight:800;margin:0 0 14px}
.meta{display:flex;flex-wrap:wrap;gap:6px 18px;color:var(--muted);font-size:.95rem;margin-bottom:28px}
.article h2{font-size:clamp(1.5rem,2.8vw,1.95rem);line-height:1.2;letter-spacing:-.01em;margin:56px 0 14px;scroll-margin-top:84px}
.article h3{font-size:1.2rem;margin:28px 0 8px}
.article p,.article li{color:var(--ink-2)}
.article ul,.article ol{padding-left:1.3em}
.article li{margin-bottom:8px}
.article strong{color:var(--ink)}

.answer{background:var(--surface);border:2px solid var(--brand);border-radius:var(--radius);padding:24px 26px;box-shadow:var(--shadow)}
.answer h2{margin:0 0 10px;font-size:1.25rem;display:flex;align-items:center;gap:10px}
.answer ul{margin:0;padding-left:1.2em}
.answer li{margin-bottom:8px}
.toc{background:var(--soft);border-radius:var(--radius);padding:20px 26px;margin-top:24px}
.toc b{display:block;margin-bottom:6px}
.toc ol{margin:0;padding-left:1.2em}
.toc li{margin:4px 0}

.table-wrap{overflow-x:auto;margin:16px 0}
.data{width:100%;border-collapse:collapse;background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden;font-size:1rem}
.data th,.data td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.data th{background:#f6f8fb;color:var(--ink);font-size:.95rem}
.data tr:last-child td{border-bottom:0}
.tag{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:3px 10px;font-size:.85rem;font-weight:700;white-space:nowrap}
.tag.no{background:var(--no-soft);color:var(--no)} .tag.ok{background:var(--ok-soft);color:var(--ok-ink)} .tag.warn{background:var(--warn-soft);color:var(--warn-ink)}

.options{display:grid;gap:16px;margin-top:18px}
.opt{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px}
.opt.us{border:2px solid var(--cta);box-shadow:0 12px 40px rgba(194,65,12,.12)}
.opt h3{margin:0 0 6px;display:flex;align-items:center;gap:10px}
.opt .num{width:32px;height:32px;border-radius:50%;background:var(--navy);color:#fff;font-size:.95rem;display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.opt.us .num{background:var(--cta)}
.opt .pros{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 0}
.callout{display:flex;gap:14px;background:var(--warn-soft);border:1px solid #f5d9a8;border-radius:14px;padding:18px 20px;margin:18px 0;color:var(--warn-ink)}
.callout .ic{margin-top:3px}
.callout p{margin:0;color:var(--warn-ink)}

.cta-box{background:var(--navy);color:#fff;border-radius:20px;padding:32px;margin:40px 0;text-align:center}
.cta-box h2{color:#fff;margin:0 0 10px}
.cta-box p{color:#dbe6f3;margin:0 auto 20px;max-width:34em}
.cta-box .note{display:block;color:#c7d6e8;font-size:.95rem;margin-top:12px}

.faq details{background:var(--surface);border:1px solid var(--line);border-radius:12px;margin-bottom:12px}
.faq summary{cursor:pointer;font-weight:700;padding:18px 22px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;min-height:56px;color:var(--ink)}
.faq summary::-webkit-details-marker{display:none}
.faq summary .ic{transition:transform .2s ease;color:var(--muted)}
.faq details[open] summary .ic{transform:rotate(45deg)}
.faq details p{padding:0 22px 18px;margin:0}

.sources{font-size:.95rem;border-top:1px solid var(--line);margin-top:48px;padding-top:20px}
.sources li{margin-bottom:6px}

.sticky{display:none}
@media (max-width:980px){
  .sticky{display:block;position:fixed;left:0;right:0;bottom:0;z-index:50;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:rgba(255,255,255,.97);border-top:1px solid var(--line)}
  .sticky .btn{width:100%}
}
@media (max-width:600px){
  body{font-size:17px}
  .article{padding:24px 16px 0}
  .top .bar{padding:0 16px}
  .top .btn{display:none}
  .cta-box{padding:26px 20px}
  .cta-box .btn{width:100%}
  .data{font-size:.95rem}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}