:root{
  --bg:#0f1720;
  --card:#ffffff;
  --ink:#1b2733;
  --muted:#5b6b7a;
  --brand:#0b5cff;
  --brand-dark:#0a3fb0;
  --accent:#ff7a18;
  --danger:#c0392b;
  --danger-bg:#fdecea;
  --success:#1e7e46;
  --success-bg:#e8f6ee;
  --line:#e6ecf2;
  --shadow:0 8px 30px rgba(15,23,32,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:#f2f5f8;
  line-height:1.6;
}
.wrap{max-width:820px;margin:0 auto;padding:0 20px}

/* Hero */
.hero{
  background:linear-gradient(135deg,#0b5cff 0%,#0a3fb0 60%,#062a78 100%);
  color:#fff;
  padding:56px 0 44px;
}
.kicker{
  text-transform:uppercase;letter-spacing:.12em;font-size:.8rem;font-weight:700;
  opacity:.9;margin:0 0 10px;
}
.hero h1{
  font-size:clamp(1.9rem,5vw,3rem);line-height:1.1;margin:0 0 16px;font-weight:800;
}
.hero h1 span{color:var(--accent)}
.lead{font-size:1.12rem;max-width:60ch;margin:0 0 22px;opacity:.96}
.meta{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);
  padding:6px 12px;border-radius:999px;font-size:.86rem;font-weight:600;white-space:nowrap;
}

/* Cards */
main{padding:26px 0 60px}
.card,.callout,.progress-card,.disclaimer{
  background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:24px;margin:18px 0;box-shadow:var(--shadow);
}
.card h2,.callout h2{margin:0 0 14px;font-size:1.4rem}
.card h3{margin:18px 0 6px;font-size:1.05rem}
p{margin:0 0 12px}
ul,ol{margin:0 0 12px;padding-left:1.25rem}
li{margin:6px 0}

/* Progress */
.progress-card{position:sticky;top:12px;z-index:5;padding:18px 20px}
.progress-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.progress-head span{color:var(--muted);font-variant-numeric:tabular-nums;font-weight:600}
.bar{height:12px;background:#e6ecf2;border-radius:999px;overflow:hidden}
.bar-fill{height:100%;width:0;background:linear-gradient(90deg,var(--brand),var(--accent));
  border-radius:999px;transition:width .35s ease}
.hint{margin:10px 0 0;font-size:.85rem;color:var(--muted)}

/* Callouts */
.callout.danger{background:var(--danger-bg);border-color:#f5c6c0}
.callout.danger h2{color:var(--danger)}
.callout.success{background:var(--success-bg);border-color:#bfe4cd}
.callout.success h2{color:var(--success)}

.note{background:#eef4ff;border-left:4px solid var(--brand);padding:12px 14px;border-radius:8px;margin:14px 0}
.note.small{font-size:.92rem}
.warn{background:#fff4e5;border-left:4px solid var(--accent);padding:10px 14px;border-radius:8px;font-weight:600}
.tip{background:#f3f0ff;border-left:4px solid #6c4bd8;padding:10px 14px;border-radius:8px}

/* Checkable lists */
.ticks,.steplist{list-style:none;padding-left:0}
.ticks li,.steplist>li{
  position:relative;padding:10px 12px 10px 42px;border:1px solid var(--line);
  border-radius:10px;margin:8px 0;cursor:pointer;transition:background .15s,border-color .15s;
  background:#fbfcfe;
}
.ticks li:hover,.steplist>li:hover{border-color:var(--brand)}
.ticks li::before,.steplist>li::before{
  content:"";position:absolute;left:12px;top:12px;width:20px;height:20px;
  border:2px solid #c3cdd8;border-radius:6px;background:#fff;transition:all .15s;
}
.ticks li.done,.steplist>li.done{background:var(--success-bg);border-color:#bfe4cd}
.ticks li.done::before,.steplist>li.done::before{
  background:var(--success);border-color:var(--success);
  content:"✓";color:#fff;font-size:14px;font-weight:800;text-align:center;line-height:18px;
}
.ticks li.done{text-decoration:line-through;text-decoration-color:#9bbfa9;color:#5f7a6a}

/* Steps */
.steplist{counter-reset:step}
.steplist>li{padding:14px 16px 14px 56px}
.steplist>li h3{margin:0 0 4px;padding-top:2px}
.steplist>li::after{
  counter-increment:step;content:counter(step);
  position:absolute;left:14px;top:36px;width:26px;height:26px;line-height:26px;text-align:center;
  background:var(--brand);color:#fff;border-radius:50%;font-weight:800;font-size:.85rem;
}
.steplist>li.done::after{background:var(--success)}
.steplist>li::before{top:16px;left:16px}
.steplist>li p{margin:6px 0}

.cols{display:grid;grid-template-columns:1fr 1fr;gap:22px}
@media (max-width:620px){.cols{grid-template-columns:1fr}.progress-card{position:static}}

/* FAQ */
.faq details{border:1px solid var(--line);border-radius:10px;padding:2px 14px;margin:8px 0;background:#fbfcfe}
.faq summary{cursor:pointer;font-weight:600;padding:10px 0}
.faq summary::marker{color:var(--brand)}
.faq details[open]{background:#fff;border-color:var(--brand)}

.disclaimer{background:#f7f9fb;color:var(--muted);font-size:.9rem;box-shadow:none}

footer{background:var(--bg);color:#c7d2dd;text-align:center;padding:26px 0}
footer p{margin:0}