/* Design tokens, reset, header, footer and shared pieces (buttons, badges, messages) */
:root{
  --bg:#faf9f6; --surface:#ffffff; --ink:#16181b; --muted:#6b7077; --line:#e7e5df;
  --btn:#16181b; --btn-ink:#ffffff; --focus:#c2410c; --ok:#1d7a4d; --err:#b3261e;
  --radius:14px; --shadow:0 1px 2px rgba(0,0,0,.04),0 8px 24px rgba(0,0,0,.06);
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#121315; --surface:#1b1c1f; --ink:#f2f1ed; --muted:#9b9fa6; --line:#2c2e33;
    --btn:#f2f1ed; --btn-ink:#121315; --focus:#ff8a4c; --ok:#5fcf98; --err:#ff8e86;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.35);
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  line-height:1.5; padding-bottom:env(safe-area-inset-bottom,0);
}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}

/* header */
.top{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line);padding-top:env(safe-area-inset-top,0)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{font-weight:700;font-size:20px;letter-spacing:.14em}

/* shared */
.price{margin:0;font-weight:600}
.badge{position:absolute;inset-block-start:10px;inset-inline-start:10px;background:var(--btn);color:var(--btn-ink);font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px}
.btn{width:100%;padding:15px;border:0;border-radius:12px;background:var(--btn);color:var(--btn-ink);font-weight:700;font-size:16px;cursor:pointer;text-align:center;display:block}
.btn:disabled{opacity:.6;cursor:wait}
.msg{text-align:center;padding:70px 0;color:var(--muted)}
.msg .btn{display:inline-block;width:auto;padding:11px 22px;margin-top:14px}
footer{padding:26px 0 40px;text-align:center;color:var(--muted);font-size:13px;border-top:1px solid var(--line)}