/* 博纳后台登录：左侧品牌叙事 + 下半能力卡片 */
.bona-login {
  --blue: #2f75e8;
  --blue-bright: #4c8dff;
  --text: #1f2d3d;
  --muted: #7a8899;
  --line: #dce6f2;

  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.618fr 1fr;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: #fff;
}

.bona-login__hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 40px;
  padding: 48px 56px 36px;
  background: linear-gradient(155deg, #6aa6ff 0%, #4c8dff 48%, #3b7af0 100%);
}

.bona-login__hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(720px 480px at 0% 0%, rgba(255, 255, 255, 0.34), transparent 55%),
    radial-gradient(560px 400px at 100% 100%, rgba(30, 64, 175, 0.22), transparent 48%);
}

.bona-login__orb {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
}

.bona-login__orb--a {
  width: 360px;
  height: 360px;
  right: -90px;
  bottom: 8%;
  border-width: 36px;
  border-color: rgba(255, 255, 255, 0.1);
  background: transparent;
}

.bona-login__orb--b {
  width: 180px;
  height: 180px;
  right: 18%;
  bottom: 28%;
}

.bona-login__orb--c {
  width: 92px;
  height: 92px;
  left: 12%;
  bottom: 18%;
  background: rgba(255, 255, 255, 0.1);
  border: 0;
}

.bona-login__grid {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 46%;
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.35) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, transparent, #000 35%, #000 80%, transparent);
}

.bona-login__hero-top,
.bona-login__hero-bottom {
  position: relative;
  z-index: 1;
}

.bona-login__logo {
  margin: 0 0 56px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.46em;
  color: rgba(255, 255, 255, 0.86);
}

.bona-login__headline {
  margin: 0;
  font-size: clamp(24px, 2.1vw + 10px, 36px);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0.06em;
  text-shadow: 0 8px 24px rgba(30, 80, 170, 0.18);
}

.bona-login__hero-lead {
  margin: 20px 0 0;
  max-width: 420px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.9);
}

.bona-login__hero-bottom {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.bona-login__cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.bona-login__card {
  padding: 18px 16px 16px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(10px);
  box-shadow: 0 12px 28px rgba(30, 80, 170, 0.12);
  min-height: 132px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.bona-login__card--2 {
  background: rgba(255, 255, 255, 0.2);
}

.bona-login__card-kicker {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: rgba(255, 255, 255, 0.72);
}

.bona-login__card strong {
  font-size: 15px;
  font-weight: 650;
  letter-spacing: 0.04em;
  line-height: 1.35;
}

.bona-login__card p {
  margin: 0;
  font-size: 12px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.78);
}

.bona-login__hero-foot {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: rgba(255, 255, 255, 0.78);
}

.bona-login__panel {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 40px;
  background: #f7f9fc;
}

.bona-login__box {
  width: 100%;
  max-width: 360px;
}

.bona-login__mode {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.28em;
  color: var(--blue);
}

.bona-login__title {
  margin: 0;
  font-size: 28px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.bona-login__hint {
  margin: 10px 0 32px;
  font-size: 14px;
  color: var(--muted);
}

.bona-login__form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.bona-login__field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
  color: #5a6b7d;
}

.bona-login__field input {
  height: 48px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  font-size: 15px;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.bona-login__field input::placeholder {
  color: #b0bccb;
}

.bona-login__field input:focus {
  border-color: var(--blue-bright);
  box-shadow: 0 0 0 3px rgba(76, 141, 255, 0.18);
}

.bona-login__btn {
  margin-top: 8px;
  height: 48px;
  border: 0;
  border-radius: 8px;
  background: var(--blue);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.2em;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(47, 117, 232, 0.28);
}

.bona-login__btn:hover {
  background: #3d82ee;
}

.bona-login__ok,
.bona-login__err {
  margin: 0 0 18px;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 13px;
}

.bona-login__ok {
  background: #e8f7ee;
  color: #157347;
}

.bona-login__err {
  background: #fdecec;
  color: #b42318;
}

@media (max-width: 1100px) {
  .bona-login__cards {
    grid-template-columns: 1fr;
  }
  .bona-login__card {
    min-height: 0;
  }
}

@media (max-width: 900px) {
  .bona-login {
    grid-template-columns: 1fr;
  }
  .bona-login__hero {
    min-height: auto;
    padding: 28px 24px 24px;
    gap: 24px;
  }
  .bona-login__logo {
    margin-bottom: 20px;
  }
  .bona-login__headline {
    font-size: 22px;
  }
  .bona-login__hero-lead {
    margin-top: 12px;
  }
  .bona-login__orb--a,
  .bona-login__orb--b,
  .bona-login__grid {
    display: none;
  }
  .bona-login__panel {
    padding: 32px 20px 40px;
    align-items: flex-start;
  }
}