/* ============================================================
   sections.css — 报名区域、页脚、响应式
   ============================================================ */

/* ----- Register Section ----- */
#register {
  padding: 92px 60px;
  background: linear-gradient(135deg, #e4f0ff 0%, #ede8ff 100%);
}
.register-inner {
  max-width: 700px; margin: 0 auto;
  text-align: center;
}
.reg-title-en {
  font-size: clamp(22px, 2.8vw, 34px);
  font-weight: 900; color: var(--blue); line-height: 1.2;
}
.reg-title-en img { height: clamp(44px, 5.5vw, 80px); width: auto; display: inline-block; }
.reg-title-cn {
  font-size: clamp(20px, 2.4vw, 30px);
  font-weight: 800; color: var(--text-dark); margin-top: 8px;
}
.reg-desc {
  font-size: 14px; color: var(--text-mid);
  margin-top: 18px; line-height: 1.9;
}
.reg-email { margin-top: 32px; }
.reg-email-label {
  font-size: 15px; color: var(--text-gray); letter-spacing: 0.5px;
}
.reg-email-addr {
  display: block; margin-top: 10px;
  font-size: clamp(15px, 1.8vw, 22px);
  font-weight: 400; letter-spacing: 1px;
  color: var(--blue);
  text-decoration: none;
  transition: color 0.25s, letter-spacing 0.25s;
}
.reg-email-addr:hover {
  color: var(--blue-dark);
  /* letter-spacing: 4px; */
}

/* ----- Footer ----- */
footer {
  background: #101828;
  color: rgba(255,255,255,0.45);
  text-align: center; padding: 28px 24px;
  font-size: 12.5px; line-height: 1.9;
}
footer .ft-brand  { color: var(--blue-light); font-weight: 700; }
footer .ft-divider { margin: 0 8px; opacity: 0.3; }
footer .ft-top    { margin-bottom: 14px; font-size: 13px; }
footer .ft-row    {
  margin-top: 5px;
  font-size: 12px;
  line-height: 1.8;
}
footer .ft-copy-cn,
footer .ft-copy-en {
  display: inline;
}
footer .ft-copy-en {
  margin-left: 12px;
}
footer .ft-small  { font-size: 11px; opacity: 0.7; }
footer .ft-link   { color: rgba(255,255,255,0.55); text-decoration: none; }
footer .ft-link:hover { color: var(--blue-light); text-decoration: underline; }

/* ----- Responsive ----- */
@media (max-width: 900px) {
  nav { padding: 0 24px; }
  nav .nav-date { display: none; }
  .section-inner { padding: 0 24px; }
  #register { padding-left: 24px; padding-right: 24px; }
  .register-inner { padding: 0 8px; }
}
@media (max-width: 700px) {
  .vmodal-body { flex-direction: column; }
  .vmodal-playlist {
    width: 100%; max-height: 220px;
    border-left: none; border-top: 1px solid rgba(255,255,255,0.07);
  }
  footer .ft-copy-cn,
  footer .ft-copy-en {
    display: block;
  }
  footer .ft-copy-en {
    margin-left: 0;
  }
}