.stccg-wrap{max-width:920px;margin:30px auto;padding:0 16px;font-family:Arial,Helvetica,sans-serif;color:#101828}
.stccg-header{text-align:center;margin-bottom:24px}
.stccg-header h1{margin:0 0 10px;font-size:40px;line-height:1.15;color:#101828}
.stccg-header p{max-width:760px;margin:0 auto;color:#667085;font-size:16px;line-height:1.6}
.stccg-card{background:#fff;border:1px solid #e6eaf0;border-radius:22px;padding:24px;box-shadow:0 12px 32px rgba(16,24,40,.06);margin-bottom:18px}
.stccg-field label{display:block;font-weight:700;color:#344054;margin-bottom:7px}
.stccg-field input,.stccg-field select{width:100%;border:1px solid #d0d5dd;border-radius:13px;padding:12px 13px;font-size:15px;box-sizing:border-box;background:#fff;color:#101828;outline:none}
.stccg-field input:focus,.stccg-field select:focus{border-color:#2563eb;box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.stccg-grid{display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:end;margin-top:16px}
.stccg-swap{width:48px;height:48px;border:none;border-radius:14px;background:#2563eb;color:#fff;font-size:22px;font-weight:800;cursor:pointer;transition:.2s ease}
.stccg-swap:hover{background:#1e4fd1;transform:translateY(-1px)}
.stccg-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.stccg-btn{border:none;background:#2563eb;color:#fff;padding:12px 17px;border-radius:12px;font-weight:700;cursor:pointer;transition:.2s ease}
.stccg-btn:hover{transform:translateY(-1px);filter:brightness(.96)}
.stccg-copy{background:#16a34a}
.stccg-result{margin-top:18px;background:linear-gradient(135deg,#0f172a,#2563eb);color:#fff;border-radius:20px;padding:24px;font-size:28px;font-weight:800;line-height:1.3;word-break:break-word}
.stccg-rate{margin-top:12px;color:#667085;font-size:14px}
.stccg-note{background:#fffaeb;color:#92400e;border:1px solid #fedf89;border-radius:16px;padding:14px 16px;line-height:1.55}
@media(max-width:720px){.stccg-header h1{font-size:32px}.stccg-grid{grid-template-columns:1fr}.stccg-swap{width:100%}.stccg-result{font-size:22px}}