.tchv-wrap{max-width:760px;margin:24px auto;padding:10px}.tchv-card{background:#fff;border-radius:18px;box-shadow:0 8px 30px rgb(0 0 0 / .08);padding:28px}.tchv-head{display:flex;gap:14px;align-items:flex-start}.tchv-icon{font-size:28px}.tchv-head h2{margin:0 0 6px;font-size:24px}.tchv-head p{margin:0;color:#666;line-height:1.5}.tchv-form{margin-top:24px;display:grid;gap:10px}.tchv-form label{font-weight:600}.tchv-form input,.tchv-form select{width:100%;box-sizing:border-box;padding:13px 14px;border:1px solid #d9dfe7;border-radius:10px;font-size:16px;background:#fff}.tchv-form button{padding:14px;border:0;border-radius:10px;background:#2563eb;color:#fff;font-weight:700;cursor:pointer;font-size:16px}.tchv-form button:hover{filter:brightness(.96)}.tchv-message{margin-top:16px;min-height:24px;color:#b42318;line-height:1.5}.tchv-result{margin-top:18px}.tchv-success{border-top:1px solid #e5e7eb;padding-top:18px}.tchv-success p{margin:8px 0;line-height:1.5}.tchv-exam-note{margin:0 0 6px;color:#666;font-size:14px}.tchv-robot{border:1px solid #e5e7eb;border-radius:10px;padding:11px 12px;background:#fafafa}.tchv-robot label{display:flex;gap:8px;align-items:center;font-weight:600;cursor:pointer}.tchv-robot input[type=checkbox]{width:18px;height:18px}.tchv-robot #tchv-website{position:absolute;left:-9999px;top:-9999px;width:1px;height:1px;opacity:0;pointer-events:none}.tchv-amount{text-align:center;margin:20px 0;padding:18px;background:#f5f8ff;border-radius:14px;font-size:16px}.tchv-amount strong{display:block;font-size:30px;margin-top:6px;line-height:1.2}.tchv-qr{text-align:center;margin-top:20px}.tchv-qr img{display:block;width:min(320px,100%);height:auto;margin:12px auto;border-radius:10px}.tchv-qr a{display:inline-block;margin-top:5px}.tchv-noqr{color:#a15c00}.tchv-exam-badge{display:inline-block;padding:8px 12px;border-radius:999px;background:#eef5ff;color:#1d4ed8;font-weight:700;font-size:14px;margin-bottom:8px}.tchv-zalo{margin-top:22px;padding-top:18px;border-top:1px solid #e5e7eb;text-align:center}.tchv-zalo-btn{display:inline-block;padding:13px 18px;border-radius:10px;background:#0b69ff;color:#fff;text-decoration:none;font-weight:700}.tchv-zalo-btn:hover{filter:brightness(.96);color:#fff}.tchv-zalo-note{font-size:13px;color:#666;margin:10px 0 0!important}@media(max-width:600px){.tchv-card{padding:20px}.tchv-head h2{font-size:20px}.tchv-amount strong{font-size:26px}}.tchv-form select#tchv-exam{height:auto!important;min-height:54px!important;line-height:1.4!important;padding:12px 44px 12px 14px!important;box-sizing:border-box!important;overflow:visible!important;white-space:normal!important}.tchv-form select#tchv-exam option{line-height:1.4!important;padding:8px!important;white-space:normal!important}