/* Tablet Deck website: the deck's own HUD look (RSI theme colours). */
:root {
  --bg: #05090f;
  --panel: #0b1726;
  --panel-hi: #12253b;
  --line: #1f3a58;
  --accent: #4fb3ff;
  --text: #e8eef5;
  --dim: #8aa0b8;
  --display: "Oxanium", "Exo 2", system-ui, sans-serif;
  --body: "Exo 2", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; color: var(--text); font: 17px/1.6 var(--body);
  background:
    radial-gradient(1200px 600px at 75% -10%, rgba(79,179,255,.16), transparent 60%),
    linear-gradient(rgba(79,179,255,.035) 1px, transparent 1px) 0 0 / 40px 40px,
    linear-gradient(90deg, rgba(79,179,255,.035) 1px, transparent 1px) 0 0 / 40px 40px,
    var(--bg);
}
a { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }

/* ---------- header ---------- */
.top {
  position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px clamp(16px, 4vw, 48px); background: rgba(5,9,15,.82); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font: 600 18px var(--display); letter-spacing: .14em; text-transform: uppercase; }
.top nav { display: flex; flex-wrap: wrap; gap: 6px 22px; }
.top nav a { color: var(--dim); text-decoration: none; font-weight: 600; letter-spacing: .04em; }
.top nav a:hover { color: var(--text); }

main { max-width: 1180px; margin: 0 auto; padding: 0 clamp(16px, 4vw, 40px); }
.kicker { margin: 0 0 6px; color: var(--accent); font: 600 13px var(--display); letter-spacing: .22em; }
h1, h2, h3 { font-family: var(--display); line-height: 1.12; margin: 0 0 14px; }
h1 { font-size: clamp(36px, 5.4vw, 64px); letter-spacing: .01em; }
h1 span { color: var(--accent); text-shadow: 0 0 28px rgba(79,179,255,.45); }
h2 { font-size: clamp(26px, 3.2vw, 38px); }
h3 { font-size: 20px; }
.lead { font-size: 19px; color: #c5d3e2; max-width: 34em; }
.fine { color: var(--dim); font-size: 14px; }
.fine.signing { font-size: 13px; }
.fine.signing a { color: var(--dim); }
.center-text { text-align: center; }

/* ---------- hero ---------- */
.hero { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(24px, 4vw, 56px); align-items: center; padding: clamp(40px, 7vw, 90px) 0 40px; }
.tablet {
  padding: 14px; border-radius: 26px; background: linear-gradient(145deg, #1b2a3c, #0a121c);
  border: 1px solid #2c4562; box-shadow: 0 30px 80px rgba(0,0,0,.6), 0 0 60px rgba(79,179,255,.18);
}
.tablet img { border-radius: 12px; width: 100%; }
.cta { display: flex; flex-wrap: wrap; gap: 14px; margin: 26px 0 12px; }
.cta.center { justify-content: center; margin-top: 30px; }
.btn {
  display: inline-flex; align-items: center; gap: 12px; padding: 12px 20px; border-radius: 10px; text-decoration: none;
  color: var(--text); background: var(--panel-hi); border: 1px solid var(--accent);
  transition: transform .15s, box-shadow .15s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 26px rgba(79,179,255,.28); }
.btn b { display: block; font: 600 17px var(--display); letter-spacing: .03em; }
.btn small { display: block; color: var(--dim); font-size: 13px; }
.btn .ico { font-size: 22px; }
.btn.primary { background: linear-gradient(180deg, #5cbcff, #2f8fdb); color: #03121f; border-color: #8fd0ff; }
.btn.primary small { color: #08324f; }
.notice {
  margin: 0 0 40px; padding: 12px 16px; border-left: 3px solid var(--accent); border-radius: 6px;
  background: rgba(11,23,38,.7); color: var(--dim); font-size: 14px;
}

/* ---------- sections ---------- */
.block { padding: clamp(40px, 6vw, 72px) 0; border-top: 1px solid rgba(31,58,88,.6); }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr)); gap: 18px; margin-top: 26px; }
.card {
  padding: 22px; border-radius: 14px; background: linear-gradient(180deg, rgba(18,37,59,.9), rgba(11,23,38,.9));
  border: 1px solid var(--line); position: relative; overflow: hidden;
}
.card::before { content: ""; position: absolute; inset: 0 0 auto; height: 2px; background: linear-gradient(90deg, var(--accent), transparent); }
.card p { margin: 0; color: #b8c6d6; }
.icon { display: inline-flex; width: 44px; height: 44px; margin-bottom: 12px; color: var(--accent); filter: drop-shadow(0 0 10px rgba(79,179,255,.45)); }
.icon svg { width: 100%; height: 100%; stroke-width: 2.4; }
.split { display: grid; grid-template-columns: 1fr 1.3fr; gap: clamp(24px, 4vw, 56px); align-items: center; }
.split.reverse { grid-template-columns: 1.3fr 1fr; }
.split.reverse > div { order: 2; }
.split img, .wide { border-radius: 14px; border: 1px solid var(--line); box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.wide { margin-top: 22px; }
.split p { color: #c5d3e2; }

.steps { list-style: none; counter-reset: step; padding: 0; margin: 26px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.steps li { counter-increment: step; padding: 22px; border-radius: 14px; background: var(--panel); border: 1px solid var(--line); }
.steps li::before { content: "0" counter(step); display: block; color: var(--accent); font: 700 30px var(--display); margin-bottom: 6px; }
.steps b { font: 600 20px var(--display); }
.steps p { margin: 6px 0 0; color: #b8c6d6; }

.faq details { margin: 10px 0; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); }
.faq summary { cursor: pointer; padding: 14px 18px; font-weight: 600; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before { content: "+"; display: inline-block; width: 20px; color: var(--accent); font-weight: 700; }
.faq details[open] summary::before { content: "−"; }
.faq details p { margin: 0; padding: 0 18px 16px 38px; color: #b8c6d6; }

footer { margin-top: 40px; padding: 30px clamp(16px, 4vw, 48px) 40px; border-top: 1px solid var(--line); text-align: center; color: var(--dim); }
footer a { color: var(--text); }

@media (max-width: 860px) {
  .hero, .split, .split.reverse { grid-template-columns: 1fr; }
  .split.reverse > div { order: 0; }
  .steps { grid-template-columns: 1fr; }
  .top nav a:not(:nth-last-child(-n+2)) { display: none; }
}