/* ===== 参会登录页 ===== */
body.login-body {
  min-height: 100vh;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
}

.login-shell {
  width: 100%;
  max-width: 1040px;
  background: #fff;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  min-height: 560px;
}

/* 左侧品牌区 */
.login-hero {
  position: relative;
  background: linear-gradient(155deg, #12365c 0%, #0b2745 55%, #071a2e 100%);
  color: #fff;
  padding: 46px 44px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
}
.login-hero::before,
.login-hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(120, 190, 60, .30), rgba(120, 190, 60, 0) 70%);
}
.login-hero::before { width: 420px; height: 420px; right: -140px; top: -120px; }
.login-hero::after {
  width: 320px; height: 320px; left: -120px; bottom: -110px;
  background: radial-gradient(circle, rgba(30, 155, 215, .32), rgba(30, 155, 215, 0) 70%);
}
.login-hero > * { position: relative; z-index: 1; }

.brand-lock { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 40px; height: 40px; border-radius: 11px;
  background: #fff;
  display: grid; place-items: center;
  object-fit: contain; padding: 3px; flex: none;
  box-shadow: 0 4px 14px rgba(0, 0, 0, .22);
}
.brand-name { font-size: 18px; font-weight: 800; letter-spacing: 3px; }
.brand-sub { font-size: 11px; opacity: .72; letter-spacing: 1.6px; }

.hero-title { font-size: 30px; line-height: 1.35; font-weight: 800; }
.hero-title-en {
  margin-top: 10px; font-size: 15px; font-weight: 600;
  opacity: .78; letter-spacing: .6px;
}
.hero-date {
  margin-top: 22px; display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; padding: 7px 14px; border-radius: 999px;
  background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .2);
}
.hero-desc { font-size: 13.5px; line-height: 1.85; opacity: .78; max-width: 380px; }

/* 右侧表单区 */
.login-form { padding: 46px 44px; display: flex; flex-direction: column; justify-content: center; }
.login-form h2 { font-size: 22px; margin-bottom: 6px; }
.login-tip { font-size: 13px; color: var(--ink-2); margin-bottom: 26px; line-height: 1.7; }

.login-foot {
  margin-top: 22px; font-size: 12px; color: var(--ink-3);
  border-top: 1px solid var(--line); padding-top: 16px; display: flex; gap: 14px; flex-wrap: wrap;
}
.login-foot a { color: var(--brand); font-weight: 600; }

@media (max-width: 860px) {
  .login-shell { grid-template-columns: 1fr; max-width: 460px; min-height: 0; }
  .login-hero { padding: 34px 28px; }
  .hero-title { font-size: 24px; }
  .hero-desc { display: none; }
  .login-form { padding: 30px 28px 34px; }
}