/* nab.radio.fm — original design system */
:root{
  --navy:#0e2a38;
  --navy-2:#12394d;
  --teal:#0e7c86;
  --teal-dark:#0a5f67;
  --amber:#f2a93b;
  --amber-dark:#d98f1f;
  --bg:#f4f7f9;
  --card:#ffffff;
  --ink:#1d2b33;
  --muted:#5a6d77;
  --line:#dde6ea;
  --radius:14px;
  --shadow:0 6px 24px rgba(14,42,56,.08), 0 1px 3px rgba(14,42,56,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.65;
  font-size:17px;
}
a{color:var(--teal-dark);text-decoration:underline;text-underline-offset:2px}
a:hover{color:var(--teal)}
img{max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}

/* ---------- top bar ---------- */
.topbar{background:var(--navy);color:#fff}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:14px;padding-bottom:14px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:#fff}
.brand .mark{
  background:var(--teal);color:#fff;font-weight:700;font-size:.82rem;
  padding:6px 10px;border-radius:8px;letter-spacing:.02em;white-space:nowrap;
}
.brand .name{font-size:1.22rem;font-weight:700;letter-spacing:.01em}
.brand .name span{color:var(--amber)}
nav.main{display:flex;gap:4px;flex-wrap:wrap}
nav.main a{
  color:#dcebf0;text-decoration:none;font-size:.95rem;font-weight:600;
  padding:8px 12px;border-radius:8px;
}
nav.main a:hover{background:var(--navy-2);color:#fff}

/* ---------- hero ---------- */
.hero{
  background:linear-gradient(135deg,var(--navy) 0%,var(--navy-2) 55%,var(--teal-dark) 130%);
  color:#fff;padding:56px 0 48px;
}
.hero h1{font-size:2.35rem;line-height:1.18;margin:0 0 14px;font-weight:800}
.hero h1 em{font-style:normal;color:var(--amber)}
.hero p.lede{font-size:1.13rem;color:#d7e6ec;max-width:720px;margin:0 0 26px}
.btn{
  display:inline-block;background:var(--amber);color:#23180a;font-weight:700;
  padding:15px 26px;border-radius:12px;text-decoration:none;font-size:1.05rem;
  box-shadow:0 8px 20px rgba(0,0,0,.25);border:2px solid var(--amber);
}
.btn:hover{background:var(--amber-dark);border-color:var(--amber-dark);color:#23180a}
.btn.secondary{background:transparent;color:#fff;border-color:#7fa3b0;box-shadow:none}
.btn.secondary:hover{border-color:#fff;color:#fff}
.hero .btnrow{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero .official-note{font-size:.85rem;color:#a9c4cf;margin-top:14px}
.hero .official-note strong{color:#fff}

/* ---------- layout ---------- */
main{padding:38px 0 10px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:28px 30px;margin-bottom:26px;
}
.card h2{margin-top:0;font-size:1.5rem;line-height:1.3;color:var(--navy)}
.card h3{color:var(--navy);font-size:1.15rem;margin-bottom:6px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:26px}
.grid .card{margin-bottom:0;height:100%}
.grid .card p{margin:6px 0 0;color:var(--muted);font-size:.97rem}
.tag{
  display:inline-block;background:#e7f3f4;color:var(--teal-dark);font-weight:700;
  font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;padding:4px 9px;border-radius:999px;margin-bottom:10px;
}
.muted{color:var(--muted)}
.small{font-size:.9rem}

/* steps */
ol.steps{counter-reset:step;list-style:none;margin:18px 0;padding:0}
ol.steps>li{
  counter-increment:step;position:relative;background:#f8fbfc;border:1px solid var(--line);
  border-radius:var(--radius);padding:18px 20px 18px 74px;margin-bottom:14px;
}
ol.steps>li::before{
  content:counter(step);position:absolute;left:18px;top:16px;width:40px;height:40px;
  background:var(--teal);color:#fff;border-radius:50%;font-weight:800;font-size:1.15rem;
  display:flex;align-items:center;justify-content:center;
}
ol.steps>li strong{display:block;color:var(--navy);font-size:1.05rem;margin-bottom:2px}
ol.steps>li p{margin:4px 0 0;color:var(--muted)}

/* callouts */
.note{border-left:5px solid var(--amber);background:#fdf6e9;border-radius:0 var(--radius) var(--radius) 0;padding:16px 20px;margin:20px 0}
.note strong{color:#8a5b07}
.warn{border-left:5px solid #c0392b;background:#fbf0ee;border-radius:0 var(--radius) var(--radius) 0;padding:16px 20px;margin:20px 0}
.warn strong{color:#93302a}
.ok{border-left:5px solid var(--teal);background:#eef7f7;border-radius:0 var(--radius) var(--radius) 0;padding:16px 20px;margin:20px 0}

/* typo chips */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0 4px}
.chips a{
  background:#eef4f6;border:1px solid var(--line);border-radius:999px;padding:8px 16px;
  text-decoration:none;font-weight:600;color:var(--navy);font-size:.95rem;
}
.chips a:hover{border-color:var(--teal);color:var(--teal-dark)}

/* FAQ */
.faq details{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:4px 22px;margin-bottom:12px;box-shadow:var(--shadow);
}
.faq summary{
  cursor:pointer;font-weight:700;color:var(--navy);padding:14px 0;font-size:1.03rem;list-style:none;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--teal);font-size:1.3rem;line-height:1}
.faq details[open ] summary::after{content:"–"}
.faq details p{margin:0 0 16px;color:var(--muted)}

/* tables */
table{width:100%;border-collapse:collapse;margin:16px 0;font-size:.97rem}
th,td{border:1px solid var(--line);padding:10px 13px;text-align:left;vertical-align:top}
th{background:#eef4f6;color:var(--navy)}
tr:nth-child(even) td{background:#fafcfd}

/* forms */
form .field{margin-bottom:16px}
form label{display:block;font-weight:600;color:var(--navy);margin-bottom:6px}
form input,form textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;
  font:inherit;background:#fbfdfd;
}
form button{
  background:var(--teal);color:#fff;border:none;font:inherit;font-weight:700;
  padding:13px 26px;border-radius:10px;cursor:pointer;
}
form button:hover{background:var(--teal-dark)}

/* footer */
footer{background:var(--navy);color:#c6d8df;margin-top:44px;padding:44px 0 30px}
footer .cols{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-bottom:30px}
footer h4{color:#fff;margin:0 0 14px;font-size:1rem;letter-spacing:.02em}
footer ul{list-style:none;margin:0;padding:0}
footer li{margin-bottom:9px}
footer a{color:#c6d8df;text-decoration:none;font-size:.94rem}
footer a:hover{color:var(--amber);text-decoration:underline}
footer .soon{font-size:.94rem;color:#9db6c0}
.disclaimer{
  border-top:1px solid #24485c;padding-top:20px;font-size:.84rem;color:#93aeb9;line-height:1.6;
}
.disclaimer strong{color:#c6d8df}
.copyline{margin-top:12px;font-size:.84rem;color:#7e9aa6}

@media (max-width:880px){
  .grid{grid-template-columns:1fr 1fr}
  footer .cols{grid-template-columns:1fr 1fr}
  .hero h1{font-size:1.9rem}
}
@media (max-width:560px){
  .grid{grid-template-columns:1fr}
  footer .cols{grid-template-columns:1fr}
  .card{padding:22px 20px}
  ol.steps>li{padding-left:66px}
  body{font-size:16px}
}

/* ---------- v2 visual upgrade: logo, depth, 3D homepage ---------- */
.brand img.logo{
  width:42px;height:42px;border-radius:11px;object-fit:cover;flex:none;
  box-shadow:0 4px 14px rgba(0,0,0,.35), inset 0 0 0 1px rgba(255,255,255,.25);
}
.btn{
  background:linear-gradient(180deg,#ffc25e,var(--amber) 55%,var(--amber-dark));
  box-shadow:0 10px 24px rgba(217,143,31,.35), 0 2px 0 #a96f10, inset 0 1px 0 rgba(255,255,255,.55);
  transition:transform .15s ease, box-shadow .15s ease;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(217,143,31,.4), 0 3px 0 #a96f10, inset 0 1px 0 rgba(255,255,255,.55)}
.btn.secondary{background:rgba(255,255,255,.06);box-shadow:inset 0 0 0 1px rgba(255,255,255,.15)}
.card{box-shadow:0 14px 34px rgba(14,42,56,.10), 0 2px 6px rgba(14,42,56,.06)}
.chips a{transition:transform .15s ease, box-shadow .15s ease;box-shadow:0 3px 10px rgba(14,42,56,.07)}
.chips a:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(14,42,56,.13)}

/* homepage 3D hero */
.hero3d{
  position:relative;overflow:hidden;color:#fff;padding:64px 0 58px;
  background:
    radial-gradient(900px 480px at 85% -10%, rgba(14,124,134,.55), transparent 60%),
    radial-gradient(700px 420px at -10% 110%, rgba(242,169,59,.28), transparent 55%),
    linear-gradient(130deg,#081c28 0%,var(--navy) 45%,var(--navy-2) 75%,var(--teal-dark) 135%);
}
.hero3d::after{
  content:"";position:absolute;inset:auto -10% -65% -10%;height:70%;
  background:radial-gradient(50% 100% at 50% 0%, rgba(255,255,255,.10), transparent 70%);
  pointer-events:none;
}
.hero3d .wrap{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.hero3d h1{font-size:2.6rem;line-height:1.14;margin:0 0 16px;font-weight:800;letter-spacing:-.01em}
.hero3d h1 em{font-style:normal;color:var(--amber)}
.hero3d p.lede{font-size:1.14rem;color:#d7e6ec;margin:0 0 26px}
.hero3d .btnrow{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero3d .official-note{font-size:.86rem;color:#a9c4cf;margin-top:16px}
.hero3d .official-note strong{color:#fff}
.stage{perspective:1200px}
.panel3d{
  transform:rotateY(-11deg) rotateX(5deg);transform-style:preserve-3d;
  background:linear-gradient(160deg, rgba(255,255,255,.14), rgba(255,255,255,.04));
  border:1px solid rgba(255,255,255,.28);border-radius:20px;padding:22px;
  box-shadow:0 40px 80px rgba(0,0,0,.45), 0 18px 30px rgba(0,0,0,.3), inset 0 1px 0 rgba(255,255,255,.35);
  backdrop-filter:blur(6px);
  animation:floaty 7s ease-in-out infinite;
}
@keyframes floaty{0%,100%{transform:rotateY(-11deg) rotateX(5deg) translateY(0)}50%{transform:rotateY(-9deg) rotateX(4deg) translateY(-10px)}}
.panel3d .prow{display:flex;align-items:center;gap:12px;background:rgba(8,28,40,.55);border:1px solid rgba(255,255,255,.14);border-radius:12px;padding:12px 14px;margin-bottom:12px}
.panel3d .prow:last-child{margin-bottom:0}
.panel3d .dot{width:34px;height:34px;flex:none;border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:800;color:#06222b;background:linear-gradient(180deg,#7fe3ec,#39b7c2);box-shadow:inset 0 1px 0 rgba(255,255,255,.6)}
.panel3d .dot.amber{background:linear-gradient(180deg,#ffd58a,#f2a93b)}
.panel3d .dot.green{background:linear-gradient(180deg,#a9ecb8,#4cc06a)}
.panel3d .pt{font-weight:700;font-size:.98rem;line-height:1.3}
.panel3d .ps{font-size:.82rem;color:#a9c4cf;line-height:1.35}
.panel3d .ok-badge{margin-left:auto;flex:none;background:#123f2c;color:#7ce6a3;border:1px solid #1f6b47;font-size:.72rem;font-weight:800;letter-spacing:.05em;padding:4px 9px;border-radius:999px}
.trustrow{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.trustrow span{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);color:#dcebf0;font-size:.82rem;font-weight:600;padding:7px 13px;border-radius:999px}
.lift{transition:transform .18s ease, box-shadow .18s ease}
.lift:hover{transform:translateY(-5px);box-shadow:0 24px 44px rgba(14,42,56,.16), 0 4px 10px rgba(14,42,56,.08)}
.icon-badge{
  width:46px;height:46px;border-radius:13px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;
  background:linear-gradient(150deg,var(--teal),var(--teal-dark));color:#fff;
  box-shadow:0 10px 20px rgba(14,124,134,.35), inset 0 1px 0 rgba(255,255,255,.4);
}
.icon-badge.amber{background:linear-gradient(150deg,#ffc25e,var(--amber-dark));box-shadow:0 10px 20px rgba(217,143,31,.35), inset 0 1px 0 rgba(255,255,255,.5)}
.icon-badge svg{width:24px;height:24px}
@media (max-width:880px){
  .hero3d .wrap{grid-template-columns:1fr}
  .hero3d h1{font-size:2.05rem}
  .stage{max-width:520px}
}