:root{
  --ink:#10202e;--muted:#4d6175;--paper:#ffffff;--cream:#f4f7fb;
  --navy:#123a5e;--teal:#0e8a7d;--amber:#f0a821;--amber-dk:#cf8a0c;
  --line:#dde6ef;--ring:rgba(14,138,125,.35);
  --shadow:0 10px 30px rgba(18,58,94,.10);
  --maxw:1080px;--gutter:22px;
  --sans:"Mulish",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --head:"Sora",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{width:100%;overflow-x:hidden}
html{scroll-behavior:smooth}
body{margin:0;background:var(--cream);color:var(--ink);font-family:var(--sans);
  font-size:17px;line-height:1.68;-webkit-text-size-adjust:100%}
.shell{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter);width:100%}
a{color:var(--teal)}
a:hover{color:var(--navy)}
img{max-width:100%;height:auto}
h1,h2,h3{font-family:var(--head);line-height:1.22;color:var(--navy);font-weight:700}
h1{font-size:2.15rem;margin:.4em 0 .35em}
h2{font-size:1.5rem;margin:1.7em 0 .5em}
h3{font-size:1.18rem;margin:1.3em 0 .4em}
p{margin:0 0 1.05em}
.skiplink{position:absolute;left:-9999px;top:0;background:var(--navy);color:#fff;padding:10px 16px;z-index:120}
.skiplink:focus{left:8px;top:8px}
.readbar{position:fixed;top:0;left:0;height:3px;width:0;background:var(--amber);z-index:130}

/* header */
.masthead{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);
  backdrop-filter:saturate(1.1) blur(6px);border-bottom:1px solid var(--line)}
.head-row{display:flex;align-items:center;gap:18px;min-height:66px;flex-wrap:nowrap}
.wordmark{font-family:var(--head);font-weight:700;font-size:1.28rem;color:var(--navy);
  text-decoration:none;white-space:nowrap}
.wordmark:hover{color:var(--teal)}
.menu{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:nowrap}
.menu a{color:var(--ink);text-decoration:none;font-size:.95rem;padding:8px 9px;border-radius:8px;white-space:nowrap}
.menu a:hover{background:var(--cream);color:var(--navy)}
.menu a.active{color:var(--teal);font-weight:600}
.toggle{display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--line);
  background:#fff;border-radius:10px;cursor:pointer;padding:0}
.toggle span{display:block;width:20px;height:2px;margin:4px auto;background:var(--navy)}
.cta-link{display:inline-block;background:var(--amber);color:#3a2600;text-decoration:none;
  font-family:var(--head);font-weight:700;border-radius:11px;padding:12px 20px;
  box-shadow:0 6px 16px rgba(240,168,33,.32);transition:transform .12s,background .12s}
.cta-link:hover{background:var(--amber-dk);color:#3a2600;transform:translateY(-1px)}
.cta-mini{padding:9px 15px;font-size:.92rem;margin-left:6px}
.cta-hero{font-size:1.08rem;padding:15px 26px}

/* main */
main{padding:26px 0 56px}
.trail{font-size:.86rem;color:var(--muted);margin:0 0 12px}
.trail a{color:var(--teal);text-decoration:none}
.trail i{color:#9fb0c1;font-style:normal;margin:0 2px}
.snap{font-size:1.12rem;line-height:1.6;color:#22384a;background:#fff;border:1px solid var(--line);
  border-left:5px solid var(--teal);border-radius:12px;padding:16px 18px;box-shadow:var(--shadow)}
.visual{margin:18px 0 22px;text-align:center}
.visual img{width:92%;border-radius:14px;box-shadow:var(--shadow);display:block;margin:0 auto}
.visual figcaption{font-size:.86rem;color:var(--muted);margin-top:9px}

/* play box */
.play-box{margin:22px 0;padding:18px;background:linear-gradient(135deg,#fff,#eef5ff);
  border:1px solid var(--line);border-radius:14px;text-align:center;box-shadow:var(--shadow)}
.play-note{display:block;font-size:.82rem;color:var(--muted);margin-top:9px}

/* deck */
.deck-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:6px 0 8px}
.tile{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;text-align:center;box-shadow:var(--shadow)}
.tk{display:block;font-family:var(--head);font-weight:700;color:var(--navy);font-size:1.06rem}
.tv{display:block;color:var(--muted);font-size:.86rem;margin-top:4px}

/* lists */
ul.checks,ol.howsteps{margin:0 0 1.1em;padding-left:0;list-style:none}
ul.checks li{position:relative;padding:6px 6px 6px 30px;margin:0 0 6px}
ul.checks li:before{content:"◆";position:absolute;left:6px;top:6px;color:var(--teal);font-size:.8rem}
ol.howsteps{counter-reset:st;padding-left:0}
ol.howsteps li{position:relative;padding:8px 6px 8px 44px;margin:0 0 8px;list-style:none}
ol.howsteps li:before{counter-increment:st;content:counter(st);position:absolute;left:6px;top:6px;
  width:26px;height:26px;border-radius:50%;background:var(--navy);color:#fff;font-family:var(--head);
  font-weight:700;font-size:.9rem;display:flex;align-items:center;justify-content:center}

/* tables */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 1.2em;border-radius:12px}
table{border-collapse:collapse;width:100%;min-width:480px;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
th,td{padding:11px 13px;text-align:left;border-bottom:1px solid var(--line);font-size:.95rem}
th{background:var(--navy);color:#fff;font-family:var(--head);font-weight:600}
tr:last-child td{border-bottom:0}
tbody tr:nth-child(even){background:var(--cream)}

/* faq */
.faq{margin:30px 0 8px}
.ask{background:#fff;border:1px solid var(--line);border-radius:12px;margin:0 0 10px;overflow:hidden}
.ask summary{cursor:pointer;padding:14px 16px;font-family:var(--head);font-weight:600;color:var(--navy);
  list-style:none;position:relative;min-height:44px;display:flex;align-items:center}
.ask summary::-webkit-details-marker{display:none}
.ask summary:after{content:"+";position:absolute;right:16px;color:var(--teal);font-size:1.3rem}
.ask[open] summary:after{content:"–"}
.ans{padding:0 16px 14px;color:#25394a}

/* errpage */
.errpage{padding:30px 0 40px}

/* footer */
.footer{background:var(--ink);color:#c6d4e1;padding:38px 0 22px;margin-top:30px}
.foot-cols{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.4fr;gap:26px}
.foot-mark{font-family:var(--head);font-weight:700;font-size:1.18rem;color:#fff;margin-bottom:8px}
.footer h3{font-family:var(--head);font-size:.98rem;color:#fff;margin:0 0 8px}
.footer p{font-size:.88rem;line-height:1.55;color:#a9bccd}
.footer ul{list-style:none;margin:0;padding:0}
.footer li{margin:0 0 6px}
.footer a{color:#9fd8d0;text-decoration:none;font-size:.9rem}
.footer a:hover{color:#fff}
.badge18{display:inline-block;margin-top:10px;border:2px solid #9fd8d0;color:#9fd8d0;border-radius:50%;
  width:42px;height:42px;line-height:38px;text-align:center;font-family:var(--head);font-weight:700}
.foot-legal{border-top:1px solid #233646;margin-top:24px;padding-top:16px;font-size:.8rem;color:#7e94a8;text-align:center}

/* uptop */
.uptop{position:fixed;right:18px;bottom:18px;width:46px;height:46px;border:0;border-radius:50%;
  background:var(--navy);color:#fff;font-size:1.2rem;cursor:pointer;opacity:0;pointer-events:none;
  transition:opacity .2s;box-shadow:var(--shadow);z-index:90}
.uptop.show{opacity:1;pointer-events:auto}

@media(max-width:860px){
  .deck-grid{grid-template-columns:repeat(2,1fr)}
  .foot-cols{grid-template-columns:1fr 1fr;gap:20px}
}
@media(max-width:720px){
  body{font-size:16px}
  h1{font-size:1.55rem}h2{font-size:1.28rem}h3{font-size:1.08rem}
  .toggle{display:block}
  .menu{display:none;position:absolute;left:0;right:0;top:66px;flex-direction:column;align-items:stretch;
    background:#fff;border-bottom:1px solid var(--line);padding:10px var(--gutter);gap:2px}
  .menu.open{display:flex}
  .menu a{padding:12px 8px;border-radius:9px}
  .cta-mini{margin:8px 0 0;text-align:center}
  .visual img{width:100%}
  .foot-cols{grid-template-columns:1fr;gap:18px}
}
@media(max-width:430px){
  .deck-grid{grid-template-columns:1fr 1fr}
}