/* Shared UI system: issimpleswapsafe.com — icy blue "Safety Layers" identity */
:root{
  --bg:#f4f8fd;
  --surface:#ffffff;
  --surface2:#eaf1fb;
  --navy:#0a1f3d;
  --navy2:#123568;
  --accent:#0f75fc;
  --accent-dark:#0044c9;
  --cyan:#0e7490;
  --warn:#b45309;
  --warn-tint:#fdf1e4;
  --green:#0f9d58;
  --ink:#0f2038;
  --ink2:#4a5b7c;
  --ink3:#7c8aa8;
  --line:#dbe5f3;
  --radius:14px;
  --shadow:0 14px 34px -20px rgba(10,31,61,.18);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:'Inter',system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:'Poppins',system-ui,sans-serif;line-height:1.25;letter-spacing:-.01em;margin:0;color:var(--navy);font-weight:700}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

.wrap{max-width:1120px;margin:0 auto;padding:0 24px}

h1{font-size:clamp(1.9rem,3.6vw,2.6rem);font-weight:800;margin:0 0 14px}
h2{font-size:clamp(1.35rem,2.4vw,1.65rem);margin:0 0 10px}
h3{font-size:1rem;font-weight:700;margin:0 0 4px}
.lede{font-size:1.06rem;color:var(--ink2);line-height:1.65;margin:0}
.supporting{font-size:.93rem;color:var(--ink2);line-height:1.6;margin:0}
.label{font-size:.74rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink3)}

.ti{width:18px;height:18px;display:inline-block;flex:none}
.ti svg{display:block;width:100%;height:100%}

.btn{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#fff;font-weight:700;padding:11px 20px;border-radius:999px;border:none;cursor:pointer;font-size:.92rem;font-family:'Inter',sans-serif}
.btn:hover{text-decoration:none;background:var(--accent-dark)}
.btn.ghost{background:#fff;color:var(--accent);border:1.4px solid var(--line)}
.btn.ghost:hover{background:var(--surface2)}
.pill-link{display:inline-flex;align-items:center;gap:6px;border:1.3px solid var(--line);color:var(--ink2);font-weight:600;font-size:.85rem;padding:8px 14px;border-radius:999px}
.pill-link:hover{border-color:var(--accent);color:var(--accent);text-decoration:none;background:var(--surface2)}
.pill-link .ti{width:12px;height:12px}

.nav{position:sticky;top:0;z-index:50;background:rgba(244,248,253,.9);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:10px}
.brand .mark{width:32px;height:32px;border-radius:9px;background:var(--navy);display:grid;place-items:center;color:#fff;flex:none}
.brand .mark .ti{width:17px;height:17px}
.brandtext{font-weight:700;font-size:1rem;color:var(--navy);font-family:'Poppins',system-ui,sans-serif}
.navlinks{display:flex;gap:22px;align-items:center}
.navlinks a{color:var(--ink2);font-weight:600;font-size:.9rem}
.navlinks a:hover{color:var(--accent);text-decoration:none}
.navlinks a.on{color:var(--accent)}
.navcta{display:flex;align-items:center;gap:16px}
@media(max-width:780px){.navlinks{display:none}}

section{padding:52px 0}
.sec-head{max-width:68ch;margin:0 0 22px}
.sec-head p{color:var(--ink2);font-size:.97rem;margin:6px 0 0}

/* direct-answer callout: used right after H1/H2 questions */
.direct-answer{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:10px;padding:16px 20px}
.direct-answer p{margin:0;color:var(--ink2);font-size:.96rem;line-height:1.6}
.direct-answer strong{color:var(--navy)}

/* Safety Layers: stacked responsibility bands, not cards */
.layers{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow)}
.layer{display:grid;grid-template-columns:220px 1fr}
.layer+.layer{border-top:1px solid var(--line)}
@media(max-width:760px){.layer{grid-template-columns:1fr}}
.layer-label{padding:22px 24px;display:flex;flex-direction:column;justify-content:center;gap:5px}
.layer-label .tag{font-family:'Poppins',system-ui,sans-serif;font-weight:700;font-size:.68rem;text-transform:uppercase;letter-spacing:.09em}
.layer-label h3{margin:0;font-size:1.02rem}
.layer.service .layer-label{background:var(--navy)}
.layer.service .layer-label .tag{color:#9db8e6}
.layer.service .layer-label h3{color:#fff}
.layer.infra .layer-label{background:var(--accent)}
.layer.infra .layer-label .tag{color:#d7e8ff}
.layer.infra .layer-label h3{color:#fff}
.layer.user .layer-label{background:var(--surface2)}
.layer.user .layer-label .tag{color:var(--accent-dark)}
.layer.user .layer-label h3{color:var(--navy)}
.layer-body{background:var(--surface);padding:20px 24px;display:flex;flex-wrap:wrap;gap:18px 28px}
.layer-item{flex:1 1 200px;min-width:180px}
.layer-item h4{margin:0 0 4px;font-size:.9rem;color:var(--navy);font-weight:700}
.layer-item p{margin:0;font-size:.85rem;color:var(--ink2);line-height:1.5}


/* checklist strip */
.check-rail{display:grid;gap:0;border-top:1px solid var(--line)}
.check-rail li{list-style:none;display:grid;grid-template-columns:42px 1fr;gap:18px;padding:20px 0;border-bottom:1px solid var(--line);align-items:flex-start}
.check-rail .n{width:34px;height:34px;border-radius:50%;background:var(--surface2);color:var(--accent-dark);font-family:'Poppins',system-ui,sans-serif;font-weight:700;font-size:1rem;display:grid;place-items:center}
.check-rail p{margin:0;color:var(--ink2);font-size:1.02rem;line-height:1.55}
.check-rail strong{color:var(--navy)}

/* wallet-to-wallet annotated journey */
.journey{display:flex;align-items:stretch;gap:0}
@media(max-width:820px){.journey{flex-direction:column}}
.jstep{flex:1;display:flex;flex-direction:column;gap:14px;padding:0 16px;position:relative}
.jstep:not(:last-child):after{content:"";position:absolute;top:27px;right:-14px;width:28px;height:1px;background:var(--line)}
@media(max-width:820px){.jstep:not(:last-child):after{display:none}.jstep{padding:0 0 24px;border-bottom:1px solid var(--line);margin-bottom:24px}}
.jstep .jtile{width:54px;height:54px;border-radius:14px;background:var(--surface2);color:var(--accent-dark);display:grid;place-items:center}
.jstep .jtile .ti{width:25px;height:25px}
.jstep h4{margin:0;font-size:1.04rem;color:var(--navy)}
.jstep p{margin:0;color:var(--ink2);font-size:.9rem;line-height:1.55}
.jstep .jtag{display:inline-flex;align-self:flex-start;font-family:'Poppins',system-ui,sans-serif;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;padding:4px 10px;border-radius:999px}
.jtag.service{background:var(--navy);color:#fff}
.jtag.infra{background:var(--accent);color:#fff}
.jtag.user{background:var(--surface2);color:var(--accent-dark)}

/* caution note, used sparingly */
.caution{display:flex;gap:12px;align-items:flex-start;background:var(--warn-tint);border-radius:10px;padding:14px 18px}
.caution .ti{color:var(--warn);width:18px;height:18px;margin-top:2px}
.caution p{margin:0;color:#7c4a12;font-size:.88rem;line-height:1.55}


.cta-block{background:var(--navy);border-radius:20px;padding:32px 34px;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.cta-block h2{margin:0 0 4px;color:#fff}
.cta-block p{margin:0;color:#b9c9e4;font-size:.92rem}
.cta-block .btn{background:#fff;color:var(--navy)}
.cta-block .btn:hover{background:var(--surface2)}

footer{background:var(--navy);color:#b9c9e4;padding:40px 0 24px;margin-top:8px}
.foot-row{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;padding-bottom:22px}
footer .brand .mark{background:rgba(255,255,255,.14)}
footer .brandtext{color:#fff}
footer .navlinks a{color:#b9c9e4;font-weight:500}
footer .navlinks a:hover{color:#fff}
.foot-note{margin:0;font-size:.85rem;color:#8ea3c9;max-width:64ch;line-height:1.6}
.foot-note a{color:#cfe0f7;text-decoration:underline}
.fnote{border-top:1px solid rgba(255,255,255,.14);margin-top:18px;padding-top:14px;font-size:.78rem;color:#6d84ac}