:root{
  --ink:#0c1a24;
  --ink-soft:#1a2e3a;
  --paper:#eef3f0;
  --muted:#4d606b;
  --line:#c5d2cb;
  --acc:#1f7a5a;
  --acc-deep:#145c43;
  --warn-bg:#fff3d1;
  --warn-line:#b8891a;
  --hero-fg:#f4f7f5;
  --card:#fff;
  --radius:8px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font:17px/1.65 Literata,Georgia,"Times New Roman",serif;
  color:var(--ink);
  background:
    linear-gradient(180deg,rgba(238,243,240,.97),rgba(226,234,229,.98)),
    url("bg-atmosphere.jpg") center top / cover fixed;
}
img{max-width:100%;display:block}
a{color:var(--acc-deep)}
a:focus-visible,.btn:focus-visible{outline:3px solid var(--warn-line);outline-offset:2px}

.w{width:min(960px,calc(100% - 40px));margin-inline:auto}
.w--wide{width:min(1120px,calc(100% - 40px))}

.age{
  background:var(--ink);color:var(--hero-fg);
  font:600 14px/1.4 Syne,sans-serif;padding:10px 0;
}
.age b{
  display:inline-flex;align-items:center;justify-content:center;
  width:2em;height:2em;margin-right:.65rem;
  border:2px solid currentColor;border-radius:50%;font-size:13px;
}

.topnav{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0;
}
.brand{
  font:800 clamp(22px,4vw,32px)/1 Syne,sans-serif;
  letter-spacing:-.03em;color:var(--acc);text-decoration:none;
}
.back{
  font:700 13px Syne,sans-serif;text-decoration:none;color:var(--ink-soft);
  border:1px solid var(--line);padding:8px 12px;border-radius:6px;background:#fff;
}
.back:hover{border-color:var(--acc);color:var(--acc-deep)}

.phero{
  position:relative;overflow:hidden;color:var(--hero-fg);
  border-radius:2px;margin-bottom:28px;
  min-height:280px;display:grid;align-items:end;
}
.phero__bg{position:absolute;inset:0;z-index:0}
.phero__bg img{width:100%;height:100%;object-fit:cover;filter:saturate(.85)}
.phero__shade{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(105deg,rgba(8,18,24,.92) 0%,rgba(8,18,24,.55) 70%,rgba(8,18,24,.25));
}
.phero__copy{position:relative;z-index:2;padding:36px 28px 28px;max-width:38rem;animation:rise .7s ease both}
.phero__kicker{
  font:700 12px/1 Syne,sans-serif;letter-spacing:.08em;text-transform:uppercase;
  color:rgba(244,247,245,.75);margin:0 0 10px;
}
.phero h1{
  margin:0 0 10px;
  font:800 clamp(32px,5vw,48px)/1.05 Syne,sans-serif;
  letter-spacing:-.035em;text-shadow:0 2px 18px rgba(0,0,0,.35);
}
.phero .lead{margin:0 0 18px;color:rgba(244,247,245,.9);max-width:34rem}
.cta-row{display:flex;flex-wrap:wrap;gap:10px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font:700 14px/1 Syne,sans-serif;letter-spacing:.02em;
  text-decoration:none;border-radius:var(--radius);
  padding:12px 16px;border:2px solid transparent;
  transition:transform .2s ease, background .2s ease, border-color .2s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn--primary{background:var(--acc);color:#fff}
.btn--primary:hover{background:var(--acc-deep)}
.btn--ghost{background:transparent;color:var(--hero-fg);border-color:rgba(244,247,245,.55)}
.btn--ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn--soft{
  background:#fff;color:var(--ink-soft);border:1px solid var(--line);width:100%;
}
.btn--soft:hover{border-color:var(--acc);color:var(--acc-deep)}
.btn--card{width:100%;background:var(--acc);color:#fff;padding:12px 16px}
.btn--card:hover{background:var(--acc-deep)}

.warn{
  background:var(--warn-bg);color:var(--ink);
  border-left:5px solid var(--warn-line);
  padding:14px 16px;margin:0 0 28px;
  font:600 14px/1.5 Syne,sans-serif;
}
.warn a{color:var(--acc-deep);font-weight:700}

.layout{
  display:grid;grid-template-columns:1fr 280px;gap:32px;align-items:start;
  margin-bottom:56px;
}
.panel{
  background:rgba(255,255,255,.82);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px 20px;
  position:sticky;top:16px;
}
.panel h2{font:700 14px Syne,sans-serif;margin:0 0 12px;letter-spacing:.03em;text-transform:uppercase}
.panel dl{margin:0;display:grid;gap:12px}
.panel dt{font:700 12px Syne,sans-serif;color:var(--muted);margin:0}
.panel dd{margin:2px 0 0;font-size:14px}
.panel code{font:600 12px ui-monospace,SFMono-Regular,Menlo,monospace;word-break:break-all}
.panel .btn{margin-top:16px}

article.prose h2{
  margin:36px 0 12px;
  font:700 clamp(22px,3vw,30px)/1.15 Syne,sans-serif;
  letter-spacing:-.03em;
}
article.prose h2:first-child{margin-top:0}
article.prose h3{font:700 18px Syne,sans-serif;margin:22px 0 8px}
article.prose p,.prose li{color:var(--ink-soft)}
article.prose ul{padding-left:1.2em}
article.prose li{margin:6px 0}

.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:18px 0}
.box{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;
}
.box strong{display:block;font:700 14px Syne,sans-serif;margin-bottom:6px}
.box p{margin:0;font-size:14px;color:var(--muted)}

.steps{margin:0;padding:0;list-style:none;display:grid;gap:12px}
.steps li{
  display:grid;grid-template-columns:36px 1fr;gap:12px;align-items:start;
  background:rgba(255,255,255,.75);border:1px solid var(--line);border-radius:var(--radius);padding:14px;
}
.steps b{
  width:36px;height:36px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--ink);color:#fff;font:700 13px Syne,sans-serif;
}
.steps h3{margin:0 0 4px;font:700 16px Syne,sans-serif}
.steps p{margin:0;font-size:14px;color:var(--muted)}

.faq{border-top:1px solid var(--line);margin-top:8px}
.faq details{border-bottom:1px solid var(--line);background:rgba(255,255,255,.65)}
.faq summary{
  cursor:pointer;font:700 15px/1.35 Syne,sans-serif;padding:14px 4px;list-style:none;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--acc)}
.faq details[open] summary::after{content:"–"}
.faq details p{margin:0 0 14px;color:var(--muted)}

.others{margin:48px 0}
.others h2{font:700 24px Syne,sans-serif;margin:0 0 14px}
.others-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.others a{
  display:block;text-decoration:none;color:var(--ink);
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px;
  font:700 14px Syne,sans-serif;transition:border-color .2s, transform .2s;
}
.others a:hover{border-color:var(--acc);transform:translateY(-2px)}
.others a span{display:block;margin-top:4px;font:400 13px Literata,serif;color:var(--muted)}

footer{
  margin-top:24px;background:var(--ink);color:rgba(238,243,240,.82);
  padding:36px 0 48px;font-size:14px;line-height:1.6;
}
footer h3{font:700 14px Syne,sans-serif;color:#fff;margin:20px 0 8px}
footer a{color:#8fd4b5}
footer .warn{margin:0 0 8px;color:var(--ink)}
.reg-list{margin:0;padding-left:1.15em;display:grid;gap:6px}
.footer-links{display:flex;flex-wrap:wrap;gap:10px 16px;margin:16px 0 8px}
.footer-meta{opacity:.75;margin:0}

@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
}
@media (max-width:860px){
  .layout{grid-template-columns:1fr}
  .panel{position:static}
  .grid2,.others-grid{grid-template-columns:1fr}
}