/* ============================================
   可复用组件：按钮、卡片、徽章等
   ============================================ */

/* === 按钮 === */
.btn {
  display: inline-block;
  padding: 14px 36px;
  font-size: var(--fs-base);
  font-weight: 600;
  letter-spacing: 0.5px;
  border-radius: var(--r-sm);
  transition: all var(--t-normal);
  text-align: center;
  cursor: pointer;
  border: 2px solid transparent;
}

.btn--gold {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: #ffffff;
  border-color: var(--color-gold);
}

.btn--gold:hover {
  background: linear-gradient(135deg, var(--color-gold-light), var(--color-gold));
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn--outline {
  background: transparent;
  color: var(--color-gold);
  border-color: var(--color-gold);
}

.btn--outline:hover {
  background: var(--color-gold);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn--sm {
  padding: 10px 24px;
  font-size: var(--fs-sm);
}

.btn--lg {
  padding: 16px 48px;
  font-size: var(--fs-lg);
}

/* === 卡片 === */
.card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: var(--r-lg);
  padding: var(--sp-2xl);
  transition: all var(--t-normal);
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(26, 86, 219, 0.3);
  box-shadow: var(--shadow-gold);
}

.card__icon {
  width: 64px;
  height: 64px;
  border-radius: var(--r-md);
  background: rgba(26, 86, 219, 0.08);
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  margin-bottom: var(--sp-lg);
  font-size: 28px;
  color: var(--color-gold);
}

.card__title {
  font-size: var(--fs-xl);
  color: var(--color-white);
  margin-bottom: var(--sp-sm);
  font-weight: 600;
}

.card__text {
  color: var(--color-text-secondary);
  font-size: var(--fs-sm);
  line-height: 1.7;
}

/* 蓝色顶部边线卡片 */
.card--bordered::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
  opacity: 0;
  transition: opacity var(--t-normal);
}

.card--bordered:hover::before { opacity: 1; }

/* === 徽章/标签 === */
.badge {
  display: inline-block;
  padding: 4px 14px;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.5px;
  border-radius: 20px;
  background: rgba(26, 86, 219, 0.08);
  color: var(--color-gold);
  border: 1px solid rgba(26, 86, 219, 0.2);
}

/* === 分隔线 === */
.divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
  border: none;
  border-radius: 2px;
}

.divider--center { margin: var(--sp-lg) auto; }
.divider--left { margin: var(--sp-lg) 0; }

/* === 回到顶部 === */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-gold);
  color: #ffffff;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: var(--shadow-md);
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--t-normal);
  cursor: pointer;
  border: none;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-gold-light);
  transform: translateY(-3px);
}

/* === 面包屑 === */
.breadcrumb {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  gap: var(--sp-sm);
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.6);
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.75);
  transition: color var(--t-fast);
}

.breadcrumb a:hover { color: #ffffff; }

.breadcrumb__sep { color: rgba(255, 255, 255, 0.4); }

/* === CTA 横幅 === */
.cta-banner {
  background: linear-gradient(135deg, #1e3a8a, #1a56db);
  border-top: none;
  border-bottom: none;
  text-align: center;
  padding: var(--sp-3xl) var(--container-pad);
}

.cta-banner h2 {
  margin-bottom: var(--sp-md);
  color: #ffffff;
}

.cta-banner p {
  margin-bottom: var(--sp-xl);
  font-size: var(--fs-lg);
  color: rgba(255, 255, 255, 0.8);
}

.cta-banner .btn--gold {
  background: #ffffff;
  color: var(--color-gold);
  border-color: #ffffff;
}

.cta-banner .btn--gold:hover {
  background: rgba(255, 255, 255, 0.9);
  color: var(--color-gold-dark);
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.2);
}

.cta-banner .btn--outline {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.5);
}

.cta-banner .btn--outline:hover {
  background: #ffffff;
  color: var(--color-gold);
  border-color: #ffffff;
}

/* === SVG 图标通用 === */
.card__icon svg,
.why-card__icon svg,
.advantage-card__icon svg,
.service-block__icon svg,
.quick-card__icon svg,
.contact-info-card__icon svg {
  display: block;
}

.footer-icon {
  display: -webkit-inline-box;
  display: -ms-inline-flexbox;
  display: inline-flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  color: rgba(255, 255, 255, 0.8);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-icon svg {
  display: block;
  width: 16px;
  height: 16px;
}

/* === 表单元素 === */
.form-group {
  margin-bottom: var(--sp-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--sp-sm);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: var(--r-sm);
  color: var(--color-text);
  font-size: var(--fs-base);
  transition: border-color var(--t-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
}

.form-textarea {
  min-height: 140px;
}

.form-select {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23718096' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-error {
  display: none;
  margin-top: 4px;
  font-size: var(--fs-xs);
  color: #e53e3e;
}

.form-group--error .form-input,
.form-group--error .form-select,
.form-group--error .form-textarea {
  border-color: #e53e3e;
}

.form-group--error .form-error {
  display: block;
}

/* === 加载遮罩 === */
.page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #ffffff;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  z-index: 99999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.page-loader__spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(26, 86, 219, 0.15);
  border-top-color: var(--color-gold);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}