/* ========== Main Form (Hero) ========== */
.main-form {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - 64px);
  padding: 2rem 1rem;
  color: #fff;
}

.main-form header.form {
  width: 100%;
  max-width: 900px;
}

/* 桌面端：保留极致透明液态水晶卡片 */
.form-info {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 50px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(28px) saturate(160%);
  -webkit-backdrop-filter: blur(28px) saturate(160%);
  border-radius: 32px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.08),
    0 1px 4px rgba(255, 255, 255, 0.06) inset;
  padding: 2.5rem 2rem;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 图标区 */
.form-icon img {
  width: 180px;
  height: 180px;
  border-radius: 24px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-icon img:hover {
  transform: scale(1.05);
}

/* 内容区 */
.form-content {
  text-align: center;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 标题：改为指定红色 #a20f10 */
.form-title h1 {
  font-size: 4rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 1rem;
  color: #a20f10;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.4));
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 描述文字：改为指定绿色 #2b8163 */
.form-desc-text {
  font-size: 1.3rem;
  color: #2b8163;
  max-width: 600px;
  margin: 0 auto 1.5rem;
  line-height: 1.6;
  text-shadow: 0 1px 3px rgba(0,0,0,0.4);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 按钮组容器 */
.button-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 按钮统一样式 */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: 24px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.3s ease;
  border: 1px solid rgba(255,255,255,0.2);
  backdrop-filter: blur(6px);
  background: rgba(255,255,255,0.08);
  color: #fff;
  text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

/* 主按钮颜色 */
.btn-primary {
  background: rgba(43, 129, 99, 0.75);
  color: #fff;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
  background: rgba(43, 129, 99, 0.85);
  border-color: rgba(255,255,255,0.3);
}

.btn:active {
  transform: translateY(0);
}

/* ========== 响应式：平板及以下（竖屏）- 透图悬空模式 ========== */
@media (max-width: 768px) {
  /* 完全移除卡片样式，变成纯透明悬空 */
  .form-info {
    flex-direction: column;
    gap: 28px;
    background: transparent; /* 移除背景 */
    backdrop-filter: none; /* 移除毛玻璃 */
    -webkit-backdrop-filter: none;
    border: none; /* 移除边框 */
    box-shadow: none; /* 移除阴影 */
    padding: 0; /* 移除内边距 */
  }

  .form-icon img {
    width: 140px;
    height: 140px;
    border-radius: 20px;
  }

  .form-title h1 {
    font-size: 2.8rem;
  }

  .form-desc-text {
    font-size: 1.1rem;
  }

  .button-group {
    flex-direction: column;
    width: 100%;
    max-width: 280px;
    margin: 0 auto;
  }

  .btn {
    width: 100%;
    text-align: center;
  }
}

/* ========== 响应式：小屏手机 ========== */
@media (max-width: 480px) {
  .main-form {
    justify-content: flex-start;
    padding-top: 4rem;
  }

  .form-info {
    gap: 24px;
  }

  .form-icon img {
    width: 120px;
    height: 120px;
  }

  .form-title h1 {
    font-size: 2.2rem;
  }
}