:root{
  --bg:#eef3f8;
  --card:#ffffff;
  --text:#172433;
  --muted:#607085;
  --brand:#16364f;
  --line:#d9e4ee;
  --soft:#f7fafc;
  --ok:#0f8a2d;
  --danger:#b42318;
  --blue-soft:#eef6fb;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Arial,sans-serif;background:var(--bg);color:var(--text)}
body{min-height:100vh}
.switch-shell{max-width:720px;margin:0 auto;padding:14px}
.switch-card{background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:0 10px 30px rgba(15,23,42,.06)}
.switch-head{padding:22px 18px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#fff,#f8fbfd);text-align:center}
.switch-logo{width:min(380px,90%);max-width:100%;height:auto;display:block;margin:0 auto 18px auto}
.switch-title{margin:0;font-size:28px;line-height:1.05;color:var(--brand)}
.switch-sub{margin:10px auto 0 auto;font-size:14px;line-height:1.6;color:#334155;max-width:600px}
.switch-body{padding:16px 18px 18px 18px}
.switch-foot{padding:0 18px 18px 18px;color:var(--muted);font-size:12px;line-height:1.6}
.switch-msg{border-radius:12px;padding:12px 13px;margin:0 0 14px 0;font-size:14px;line-height:1.55;border:1px solid var(--line)}
.switch-msg.ok{background:#eef9f1;color:#155724;border-color:#cfead6}
.switch-msg.err{background:#fff1f1;color:#8e2323;border-color:#f0c9c9}
.switch-msg.big{font-size:15px}
.switch-note{background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:12px 13px;margin:0 0 14px 0;color:#475569;font-size:14px;line-height:1.55}
.switch-note strong{color:var(--brand)}
.switch-plan{background:#fbfdff;border:1px solid var(--line);border-radius:16px;padding:13px;margin:0 0 14px 0}
.switch-plan-title{font-weight:800;color:var(--brand);font-size:15px;margin:0 0 10px 0}
.switch-plan dl{margin:0;display:grid;grid-template-columns:1fr;gap:7px}
.switch-plan dl div{display:flex;justify-content:space-between;gap:12px;padding:7px 0;border-bottom:1px solid #edf3f8}
.switch-plan dl div:last-child{border-bottom:0}
.switch-plan dt{margin:0;color:#64748b;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.03em}
.switch-plan dd{margin:0;text-align:right;color:#172433;font-size:13px;font-weight:700}
.switch-grid{display:grid;grid-template-columns:1fr;gap:12px}
.switch-field label{display:block;font-size:12px;font-weight:700;letter-spacing:.03em;text-transform:uppercase;color:#516171;margin:0 0 6px 0}
.switch-field input[type="text"],.switch-field input[type="email"],.switch-field input[type="tel"],.switch-field textarea{width:100%;border:1px solid var(--line);border-radius:12px;padding:0 14px;font-size:16px;background:#fff;color:var(--text)}
.switch-field input[type="text"],.switch-field input[type="email"],.switch-field input[type="tel"]{height:48px}
.switch-field textarea{padding-top:12px;line-height:1.45;resize:vertical}
.switch-field input[readonly]{background:#f8fafc;color:#475569}
.switch-field input:focus,.switch-field textarea:focus{outline:none;border-color:#9eb6cb;box-shadow:0 0 0 4px rgba(22,54,79,.08)}
.switch-field.full{grid-column:1/-1}
.switch-choice-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.switch-choice{display:flex!important;align-items:center;gap:8px;min-height:48px;padding:0 12px;border:1px solid var(--line);border-radius:12px;background:#fff;text-transform:none!important;letter-spacing:0!important;font-size:14px!important;color:#334155!important}
.switch-choice input{margin:0}
.switch-actions{display:flex;flex-direction:column;gap:10px;margin-top:14px}
.switch-btn{display:inline-flex;justify-content:center;align-items:center;min-height:50px;padding:0 16px;border-radius:12px;border:0;background:var(--brand);color:#fff;text-decoration:none;font-size:16px;font-weight:700;cursor:pointer}
.switch-btn.secondary{background:#e8eef4;color:var(--brand)}
.switch-link-btn{background:transparent;border:0;color:var(--brand);font-weight:700;text-decoration:underline;cursor:pointer;padding:8px 0;font-size:13px}
.switch-verify-grid{display:grid;grid-template-columns:1fr;gap:12px}
.switch-verify-box{border:1px solid var(--line);background:#fff;border-radius:14px;padding:13px}
.switch-verify-box.done{background:#eef9f1;border-color:#cfead6}
.switch-verify-box h2{margin:0 0 6px 0;color:var(--brand);font-size:16px}
.switch-verify-box p{margin:0 0 12px 0;font-size:13px;line-height:1.5;color:#475569}
.switch-otp-form{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:center}
.switch-otp-form input{height:50px;border:1px solid var(--line);border-radius:12px;padding:0 14px;font-size:20px;text-align:center;letter-spacing:.12em}
.switch-resend-form{margin-top:8px}
.switch-section-title{margin:18px 0 10px 0;color:var(--brand);font-size:17px;font-weight:800}
.switch-upload-grid{display:grid;grid-template-columns:1fr;gap:12px}
.switch-upload{border:1px dashed #9fb4c8;border-radius:14px;padding:14px;background:#fcfdff}
.switch-upload.has-file{border-style:solid;background:#f7fbf8;border-color:#cfead6}
.switch-upload-title{font-size:14px;font-weight:800;color:var(--brand);margin:0 0 6px 0}
.switch-upload-title span{color:var(--danger)}
.switch-upload p{margin:0 0 10px 0;font-size:13px;line-height:1.5;color:var(--muted)}
.switch-upload input[type="file"]{display:block;width:100%;font-size:14px}
.switch-file-ok{margin:0 0 10px 0;border-radius:10px;background:#eef9f1;color:#155724;padding:8px 10px;font-size:12px;font-weight:700}
.switch-existing-files{background:var(--blue-soft);border:1px solid var(--line);border-radius:12px;padding:12px;margin:14px 0 0 0;font-size:13px;color:#334155}
.switch-existing-files ul{margin:8px 0 0 0;padding-left:18px}
.switch-existing-files li{margin:4px 0}
.switch-check{display:flex;gap:10px;align-items:flex-start;background:#fbfdff;border:1px solid var(--line);border-radius:12px;padding:12px;margin-top:14px}
.switch-check input{margin-top:3px}
.switch-check label{font-size:13px;line-height:1.55;color:#334155}
.switch-check a{color:var(--brand);font-weight:700}
@media(min-width:700px){
  .switch-shell{padding:24px;max-width:760px}
  .switch-head,.switch-body,.switch-foot{padding-left:22px;padding-right:22px}
  .switch-title{font-size:30px}
  .switch-grid{grid-template-columns:1fr 1fr}
  .switch-upload-grid{grid-template-columns:1fr 1fr}
  .switch-verify-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){
  .switch-logo{width:min(340px,92%);margin-bottom:16px}
  .switch-title{font-size:25px}
  .switch-choice-row{grid-template-columns:1fr}
  .switch-plan dl div{display:block}
  .switch-plan dd{text-align:left;margin-top:3px}
  .switch-otp-form{grid-template-columns:1fr}
}