/* iesim.org — shared styles */
:root{
  --ground:#F4F5F1; --card:#FFFFFF; --ink:#10202B; --muted:#4A5862;
  --line:#D6DCD5; --line-strong:#C9D0C8;
  --accent:#0A6E53; --accent-dark:#064D3A; --accent-soft:#E3F0EA;
  --warn-bg:#FFF3D6; --warn-ink:#6B4600;
  --night:#10202B; --night-2:#16293A; --night-line:#2C3D49; --mint:#9FE0C6; --night-muted:#A9B6AE;
  --display:'Bricolage Grotesque',system-ui,sans-serif;
  --body:'IBM Plex Sans',system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,Menlo,monospace;
  --radius:16px; --wrap:1200px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.6}
img,svg{max-width:100%}
a{color:var(--accent)}a:hover{color:var(--accent-dark)}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.narrow{max-width:760px}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:8px 14px;z-index:10}
.skip:focus{left:8px}

/* header */
.site-header{border-bottom:1px solid var(--line);background:var(--ground)}
.site-header .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;padding-top:14px;padding-bottom:14px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.logo span{font-family:var(--display);font-size:24px;font-weight:700;letter-spacing:-.5px}
.nav{display:flex;flex-wrap:wrap;gap:6px 22px;font-size:15px;font-weight:500}
.nav a{color:var(--ink);text-decoration:none;padding:8px 0}
.nav a:hover,.nav a[aria-current=page]{color:var(--accent)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:12px 22px;border-radius:12px;font-weight:600;font-size:16px;text-decoration:none;border:1px solid transparent;cursor:pointer;font-family:inherit}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);color:#fff}
.btn-ghost{background:var(--card);color:var(--ink);border-color:var(--line-strong)}
.btn-ghost:hover{border-color:var(--ink);color:var(--ink)}
.btn-sm{min-height:44px;padding:8px 16px;font-size:15px}

/* type */
.eyebrow{font-family:var(--mono);font-size:13px;letter-spacing:1.5px;color:var(--muted);text-transform:uppercase}
h1,h2,h3{line-height:1.08;margin:0}
h1{font-family:var(--display);font-size:clamp(40px,6vw,64px);letter-spacing:-1.8px;font-weight:700}
h2{font-family:var(--display);font-size:clamp(30px,4vw,44px);letter-spacing:-1px;font-weight:700}
h3{font-size:21px;font-weight:600;line-height:1.3}
.lead{font-size:19px;line-height:1.55;color:var(--muted);margin:0;max-width:600px}
.muted{color:var(--muted)}
.small{font-size:14px}

/* sections */
.section{padding:80px 0}
.section-head{display:flex;flex-direction:column;gap:12px;max-width:680px;margin-bottom:36px}
.section-head p{margin:0;font-size:17px;color:var(--muted)}
.band{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.dark{background:var(--night);color:#F4F5F1}
.dark .muted,.dark .section-head p{color:var(--night-muted)}
.dark a{color:var(--mint)}

/* hero */
.hero{padding:64px 0 72px}
.hero .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:56px}
.hero-copy{flex:1 1 520px;min-width:0;display:flex;flex-direction:column;gap:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.ticks{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:14px;color:var(--muted);padding:0;margin:0;list-style:none}
.ticks li{display:inline-flex;align-items:center;gap:6px}
.pass{flex:1 1 380px;min-width:0;max-width:470px;background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:0 24px 48px -24px rgba(16,32,43,.25);overflow:hidden}
.pass-top{padding:24px 28px;display:flex;flex-direction:column;gap:20px}
.pass-row{display:flex;justify-content:space-between;align-items:center;gap:12px}
.pass-code{font-family:var(--mono);font-size:34px;font-weight:500;display:block}
.pass-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.pass-grid dt,.label{font-family:var(--mono);font-size:11px;letter-spacing:1px;color:var(--muted);text-transform:uppercase}
.pass-grid dd{margin:2px 0 0;font-size:18px;font-weight:600}
.perf{border-top:2px dashed var(--line);margin:0 16px}
.pass-bottom{padding:20px 28px 24px;display:flex;flex-direction:column;gap:10px}
.chip{display:inline-flex;align-items:center;gap:5px;font-size:13px;font-weight:600;padding:5px 10px;border-radius:999px;background:var(--accent-soft);color:var(--accent-dark)}
.chip-warn{background:var(--warn-bg);color:var(--warn-ink)}
.chips{display:flex;flex-wrap:wrap;gap:8px}

/* grids & cards */
.cards{display:flex;flex-wrap:wrap;gap:20px}
.card{flex:1 1 240px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:flex;flex-direction:column;gap:12px}
.card p{margin:0;color:var(--muted);font-size:15px}
.step-n{font-family:var(--mono);font-size:14px;color:var(--accent)}
a.card{text-decoration:none;color:var(--ink);transition:border-color .15s}
a.card:hover{border-color:var(--ink)}
.card .more{margin-top:auto;font-weight:600;color:var(--accent);font-size:15px}
.features{display:flex;flex-wrap:wrap;gap:24px 40px;padding:28px 0;margin:0;list-style:none}
.features li{flex:1 1 220px;display:flex;gap:12px;align-items:flex-start}
.features strong{display:block;font-size:15px}
.features span{font-size:14px;color:var(--muted)}

/* provider table */
.table-box{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--card)}
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{text-align:left;vertical-align:top;padding:14px 18px}
thead tr{background:var(--ground)}
tbody tr{border-top:1px solid var(--line)}
th[scope=row]{font-weight:600}
.providers{min-width:760px}
.price{font-weight:600;white-space:nowrap}

.provider-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.provider{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;gap:10px}
.provider .name{font-family:var(--display);font-size:26px;font-weight:700;letter-spacing:-.5px}
.provider .best{align-self:flex-start}
.provider dl{margin:4px 0 8px;display:grid;grid-template-columns:auto 1fr;gap:6px 12px;font-size:14px}
.provider dt{color:var(--muted)}
.provider dd{margin:0;font-weight:600}
.provider .btn{margin-top:auto}

/* note boxes */
.note{background:var(--warn-bg);color:var(--warn-ink);border-radius:12px;padding:14px 16px;font-size:15px}
.note-ok{background:var(--accent-soft);color:var(--accent-dark)}
.disclosure{font-size:14px;color:var(--muted);border-left:0;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 16px}

/* checker + tabs */
.two{display:flex;flex-wrap:wrap;gap:40px}
.two > *{flex:1 1 420px;min-width:0}
.field{display:flex;flex-direction:column;gap:8px;max-width:440px}
.field label{font-weight:600;font-size:14px}
select{font:inherit;font-size:16px;min-height:48px;padding:0 14px;border:1px solid var(--line-strong);border-radius:10px;background:var(--card);color:var(--ink)}
.tabs{display:flex;gap:8px}
.pill{font:inherit;font-size:15px;font-weight:600;min-height:44px;padding:0 18px;border-radius:999px;cursor:pointer;border:1px solid var(--line-strong);background:var(--card);color:var(--ink)}
.pill[aria-selected=true],.pill[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:#fff}
.steps{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:14px;counter-reset:s}
.steps li{display:flex;gap:14px;align-items:flex-start;counter-increment:s}
.steps li::before{content:counter(s);flex:none;width:28px;height:28px;border-radius:999px;background:var(--accent-soft);color:var(--accent-dark);font-family:var(--mono);font-size:13px;display:flex;align-items:center;justify-content:center;margin-top:1px}
[hidden]{display:none!important}

/* faq */
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:20px 0;font-size:18px;font-weight:600;min-height:44px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';font-size:26px;font-weight:400;line-height:1;transition:transform .2s;flex:none}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin:0 0 20px;color:var(--muted);max-width:720px}

/* article */
.article{padding:48px 0 80px}
.article header{display:flex;flex-direction:column;gap:16px;margin-bottom:32px}
.article h1{font-size:clamp(36px,5vw,54px)}
.article h2{font-size:clamp(26px,3vw,34px);margin:48px 0 14px}
.article h3{margin:28px 0 8px}
.article p,.article li{font-size:17px;line-height:1.7}
.article ul,.article ol{padding-left:22px}
.article li{margin:6px 0}
.byline{font-size:14px;color:var(--muted);font-family:var(--mono)}
.toc{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 22px}
.toc ol{margin:8px 0 0}
.toc li{font-size:15px;margin:4px 0}
.answer{background:var(--accent-soft);color:var(--accent-dark);border-radius:14px;padding:20px 22px}
.answer p{margin:0;font-size:17px}
.sources li{font-size:15px}
.legal h2{font-size:26px;margin:36px 0 10px}
.legal p,.legal li{font-size:16px}

/* footer */
.site-footer{background:var(--card);border-top:1px solid var(--line)}
.site-footer .wrap{padding-top:48px;padding-bottom:32px;display:flex;flex-direction:column;gap:32px}
.foot-cols{display:flex;flex-wrap:wrap;gap:32px 64px;justify-content:space-between}
.foot-brand{flex:1 1 260px;max-width:340px;display:flex;flex-direction:column;gap:10px}
.foot-brand .logo span{font-size:22px}
.foot-brand p{margin:0;color:var(--muted);font-size:15px}
.foot-col{display:flex;flex-direction:column;gap:8px;font-size:15px}
.foot-col strong{font-family:var(--mono);font-size:12px;letter-spacing:1px;color:var(--muted);text-transform:uppercase;margin-bottom:4px}
.foot-col a{color:var(--ink);text-decoration:none}
.foot-col a:hover{color:var(--accent)}
.foot-base{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-top:24px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}

@media (max-width:640px){
  .section{padding:56px 0}
  .hero{padding:40px 0 56px}
  .hero .wrap{gap:36px}
  .pass-code{font-size:28px}
}