:root{
  --bg:#0b0d12; --card:#141822; --card-line:#222836; --inner:#0e1118;
  --text:#fff; --muted:#9db0c8; --faint:#6f7f95;
  --red1:#ff5a4d; --red2:#a31f1a; --tag-bg:#3a1a1d; --tag-text:#ff6a5e;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh}
.wrap{max-width:1160px;margin:0 auto;padding:36px 20px}

/* cards */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
.card{background:var(--card);border:1px solid var(--card-line);border-radius:18px;padding:26px}
.tag{display:inline-block;background:var(--tag-bg);color:var(--tag-text);font-size:.7rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:5px 14px;border-radius:999px;margin-bottom:14px}
.card h2{font-size:1.4rem;font-weight:700;margin-bottom:10px}
.card p{color:var(--muted);font-size:.95rem;margin-bottom:18px}
.card p strong{color:#fff;font-weight:600}

/* code box */
.code-box{display:block;position:relative;background:var(--inner);border:1px solid var(--card-line);border-radius:12px;padding:18px 20px;margin-bottom:20px;cursor:pointer;transition:border-color .2s}
.code-box:hover,.code-box:focus-visible{border-color:var(--red1);outline:none}
.code-label{display:block;color:var(--muted);font-size:.88rem}
.code{display:block;font-size:1.9rem;font-weight:700;letter-spacing:.08em;margin:6px 0}
.code-hint{display:block;color:var(--faint);font-size:.85rem}
.copy-state{position:absolute;top:14px;right:16px;font-size:.72rem;color:var(--faint)}
.code-box.copied .copy-state{color:#4ade80}

/* button */
.btn{display:inline-flex;align-items:center;gap:10px;background:linear-gradient(90deg,var(--red1),var(--red2));color:#fff;font-weight:600;font-size:1rem;padding:14px 26px;border-radius:12px;border:1px solid rgba(255,255,255,.12);box-shadow:0 8px 20px rgba(255,90,77,.18);transition:transform .15s,filter .15s}
.btn:hover{transform:translateY(-2px);filter:brightness(1.08)}
.btn:focus-visible,.wa:focus-visible{outline:2px solid #fff;outline-offset:3px}
.btn svg{width:18px;height:18px;fill:none;stroke:#fff;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
a{text-decoration:none}

/* whatsapp */
.wa{position:fixed;right:18px;bottom:18px;width:56px;height:56px;border-radius:50%;background:#25d366;display:grid;place-items:center;box-shadow:0 6px 18px rgba(0,0,0,.4);transition:transform .15s}
.wa:hover{transform:scale(1.08)}
.wa svg{width:28px;height:28px;fill:none;stroke:#fff;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* toast */
.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);background:#fff;color:#111;font-weight:600;font-size:.9rem;padding:10px 20px;border-radius:999px;opacity:0;pointer-events:none;transition:opacity .25s,transform .25s}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* mobile */
@media (max-width:820px){
  .cards{grid-template-columns:1fr}
  .wrap{padding:24px 16px}
  .card{padding:20px}
}
@media (max-width:480px){
  .btn{width:100%;justify-content:center}
  .code{font-size:1.6rem}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}