/* 凯源泰迪企业门户 - 轻奢极简商务设计系统 */
:root {
  --kytd-primary: #1a3a5c;
  --kytd-primary-light: #2d5a87;
  --kytd-accent: #c9a962;
  --kytd-accent-soft: rgba(201, 169, 98, 0.15);
  --kytd-bg: #f8f9fb;
  --kytd-bg-elevated: #ffffff;
  --kytd-text: #1c2331;
  --kytd-text-muted: #5c6578;
  --kytd-border: rgba(26, 58, 92, 0.08);
  --kytd-shadow-sm: 0 2px 8px rgba(26, 58, 92, 0.06);
  --kytd-shadow-md: 0 8px 32px rgba(26, 58, 92, 0.1);
  --kytd-shadow-lg: 0 16px 48px rgba(26, 58, 92, 0.12);
  --kytd-radius: 12px;
  --kytd-radius-lg: 20px;
  --kytd-font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --kytd-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body.kytd-portal {
  font-family: var(--kytd-font);
  background: var(--kytd-bg);
  color: var(--kytd-text);
  line-height: 1.7;
  margin: 0;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* 导航 */
.kytd-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--kytd-border);
  transition: var(--kytd-transition);
}

.kytd-nav.scrolled {
  box-shadow: var(--kytd-shadow-sm);
}

.kytd-nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.kytd-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--kytd-primary);
}

.kytd-brand img { height: 40px; width: auto; }

.kytd-brand-text {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.kytd-nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.kytd-nav-links a {
  display: block;
  padding: 8px 16px;
  color: var(--kytd-text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: 8px;
  transition: var(--kytd-transition);
}

.kytd-nav-links a:hover,
.kytd-nav-links a.active {
  color: var(--kytd-primary);
  background: var(--kytd-accent-soft);
}

.kytd-nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  color: var(--kytd-primary);
}

/* 主内容 */
.kytd-main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 40px 24px 80px;
  animation: kytdFadeIn 0.6s ease;
}

@keyframes kytdFadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 页面标题 */
.kytd-page-header {
  text-align: center;
  margin-bottom: 48px;
}

.kytd-page-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  color: var(--kytd-primary);
  margin: 0 0 12px;
  letter-spacing: 0.04em;
}

.kytd-page-header .subtitle {
  color: var(--kytd-text-muted);
  font-size: 1.0625rem;
  max-width: 640px;
  margin: 0 auto;
}

.kytd-divider {
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--kytd-accent), var(--kytd-primary-light));
  margin: 20px auto 0;
  border-radius: 2px;
}

/* 卡片 */
.kytd-card {
  background: var(--kytd-bg-elevated);
  border-radius: var(--kytd-radius-lg);
  border: 1px solid var(--kytd-border);
  box-shadow: var(--kytd-shadow-sm);
  overflow: hidden;
  transition: var(--kytd-transition);
}

.kytd-card:hover {
  box-shadow: var(--kytd-shadow-md);
  transform: translateY(-2px);
}

.kytd-card-body { padding: 32px; }

.kytd-card-body p {
  font-size: 1.0625rem;
  text-indent: 2em;
  margin: 0 0 1em;
  color: var(--kytd-text);
}

/* 产品网格 */
.kytd-product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.kytd-product-card {
  background: var(--kytd-bg-elevated);
  border-radius: var(--kytd-radius-lg);
  border: 1px solid var(--kytd-border);
  overflow: hidden;
  transition: var(--kytd-transition);
  display: flex;
  flex-direction: column;
}

.kytd-product-card:hover {
  box-shadow: var(--kytd-shadow-lg);
  transform: translateY(-4px);
}

.kytd-product-card .img-wrap {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: linear-gradient(135deg, #f0f3f7 0%, #e8ecf2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.kytd-product-card img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 16px;
  transition: var(--kytd-transition);
}

.kytd-product-card:hover img { transform: scale(1.03); }

.kytd-product-card h3 {
  padding: 20px 24px 8px;
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--kytd-primary);
}

.kytd-product-card .card-footer {
  padding: 0 24px 24px;
  margin-top: auto;
}

/* 按钮 */
.kytd-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: var(--kytd-transition);
}

.kytd-btn-primary {
  background: linear-gradient(135deg, var(--kytd-primary) 0%, var(--kytd-primary-light) 100%);
  color: #fff;
  box-shadow: 0 4px 12px rgba(26, 58, 92, 0.25);
}

.kytd-btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(26, 58, 92, 0.35);
  color: #fff;
}

.kytd-btn-outline {
  background: transparent;
  color: var(--kytd-primary);
  border: 1.5px solid var(--kytd-primary);
}

.kytd-btn-outline:hover {
  background: var(--kytd-accent-soft);
}

.kytd-btn-sm { padding: 6px 16px; font-size: 0.875rem; }

/* 业务卡片 */
.kytd-service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}

.kytd-service-item {
  background: var(--kytd-bg-elevated);
  border-radius: var(--kytd-radius-lg);
  padding: 32px;
  border: 1px solid var(--kytd-border);
  transition: var(--kytd-transition);
}

.kytd-service-item:hover {
  box-shadow: var(--kytd-shadow-md);
  border-color: var(--kytd-accent);
}

.kytd-service-item h3 {
  color: var(--kytd-primary);
  margin: 0 0 12px;
  font-size: 1.25rem;
}

/* 表格 */
.kytd-table-wrap {
  background: var(--kytd-bg-elevated);
  border-radius: var(--kytd-radius-lg);
  border: 1px solid var(--kytd-border);
  overflow: hidden;
  box-shadow: var(--kytd-shadow-sm);
}

.kytd-table-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 28px;
  border-bottom: 1px solid var(--kytd-border);
}

.kytd-table-header h2 {
  margin: 0;
  font-size: 1.25rem;
  color: var(--kytd-primary);
}

.kytd-table {
  width: 100%;
  border-collapse: collapse;
}

.kytd-table th,
.kytd-table td {
  padding: 16px 28px;
  text-align: left;
  border-bottom: 1px solid var(--kytd-border);
}

.kytd-table th {
  background: rgba(26, 58, 92, 0.03);
  font-weight: 600;
  color: var(--kytd-primary);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.kytd-table tr:last-child td { border-bottom: none; }

.kytd-table tr:hover td { background: var(--kytd-accent-soft); }

.kytd-table .actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* 表单 */
.kytd-form {
  max-width: 560px;
  margin: 0 auto;
  background: var(--kytd-bg-elevated);
  padding: 40px;
  border-radius: var(--kytd-radius-lg);
  border: 1px solid var(--kytd-border);
  box-shadow: var(--kytd-shadow-md);
}

.kytd-form-group { margin-bottom: 24px; }

.kytd-form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--kytd-primary);
}

.kytd-form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--kytd-border);
  border-radius: 8px;
  font-size: 1rem;
  transition: var(--kytd-transition);
  background: #fff;
}

.kytd-form-control:focus {
  outline: none;
  border-color: var(--kytd-primary-light);
  box-shadow: 0 0 0 3px var(--kytd-accent-soft);
}

.kytd-file-drop {
  border: 2px dashed var(--kytd-border);
  border-radius: var(--kytd-radius);
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: var(--kytd-transition);
}

.kytd-file-drop:hover,
.kytd-file-drop.dragover {
  border-color: var(--kytd-accent);
  background: var(--kytd-accent-soft);
}

/* 预览弹窗 */
.kytd-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(26, 58, 92, 0.5);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  animation: kytdFadeIn 0.2s ease;
}

.kytd-modal-overlay.active { display: flex; }

.kytd-modal {
  background: #fff;
  border-radius: var(--kytd-radius-lg);
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--kytd-shadow-lg);
}

.kytd-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 28px;
  border-bottom: 1px solid var(--kytd-border);
}

.kytd-modal-header h3 { margin: 0; color: var(--kytd-primary); }

.kytd-modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--kytd-text-muted);
  line-height: 1;
  padding: 4px;
}

.kytd-modal-body {
  padding: 28px;
  overflow: auto;
  flex: 1;
}

.kytd-modal-body img { max-width: 100%; height: auto; border-radius: 8px; }

.kytd-modal-body iframe {
  width: 100%;
  height: 70vh;
  border: none;
  border-radius: 8px;
}

/* Hero 首页 */
.kytd-hero {
  background: linear-gradient(135deg, var(--kytd-primary) 0%, #0f2847 50%, var(--kytd-primary-light) 100%);
  color: #fff;
  border-radius: var(--kytd-radius-lg);
  padding: clamp(48px, 8vw, 80px) clamp(32px, 6vw, 64px);
  margin-bottom: 48px;
  position: relative;
  overflow: hidden;
}

.kytd-hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(201, 169, 98, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.kytd-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 600;
  margin: 0 0 16px;
  position: relative;
}

.kytd-hero p {
  font-size: 1.125rem;
  opacity: 0.9;
  max-width: 720px;
  margin: 0;
  position: relative;
  text-indent: 0;
}

/* 联系信息 */
.kytd-contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.kytd-contact-item {
  padding: 28px;
  background: var(--kytd-bg-elevated);
  border-radius: var(--kytd-radius);
  border: 1px solid var(--kytd-border);
}

.kytd-contact-item h4 {
  color: var(--kytd-accent);
  margin: 0 0 8px;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.kytd-contact-item p { margin: 0; color: var(--kytd-text); }

/* 页脚 */
.kytd-footer {
  background: var(--kytd-primary);
  color: rgba(255, 255, 255, 0.85);
  padding: 32px 24px;
  margin-top: auto;
}

.kytd-footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 0.875rem;
}

.kytd-footer a { color: var(--kytd-accent); text-decoration: none; }

/* 详情页 */
.kytd-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.kytd-detail-img {
  background: linear-gradient(135deg, #f0f3f7, #e8ecf2);
  border-radius: var(--kytd-radius-lg);
  padding: 32px;
  text-align: center;
}

.kytd-detail-img img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
}

.kytd-detail-content h2 {
  color: var(--kytd-primary);
  margin: 0 0 20px;
}

.kytd-detail-content p {
  text-indent: 2em;
  margin-bottom: 1em;
}

/* 提示消息 */
.kytd-alert {
  padding: 16px 24px;
  border-radius: 8px;
  margin-bottom: 24px;
}

.kytd-alert-success {
  background: rgba(34, 139, 87, 0.1);
  color: #1a6b42;
  border: 1px solid rgba(34, 139, 87, 0.2);
}

.kytd-alert-error {
  background: rgba(192, 57, 43, 0.1);
  color: #922b21;
  border: 1px solid rgba(192, 57, 43, 0.2);
}

/* 响应式 */
@media (max-width: 768px) {
  .kytd-nav-toggle { display: block; }

  .kytd-nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px;
    border-bottom: 1px solid var(--kytd-border);
    transform: translateY(-120%);
    opacity: 0;
    transition: var(--kytd-transition);
    pointer-events: none;
  }

  .kytd-nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .kytd-nav-links a { width: 100%; text-align: center; }

  .kytd-detail { grid-template-columns: 1fr; }

  .kytd-main { padding: 24px 16px 60px; }

  .kytd-table-header { flex-direction: column; gap: 16px; align-items: flex-start; }

  .kytd-table th, .kytd-table td { padding: 12px 16px; font-size: 0.875rem; }
}

/* 详情页 legacy 卡片兼容 */
.kytd-main .card {
  background: var(--kytd-bg-elevated);
  border-radius: var(--kytd-radius-lg);
  border: 1px solid var(--kytd-border);
  box-shadow: var(--kytd-shadow-sm);
  margin-bottom: 24px;
  overflow: hidden;
}

.kytd-main .card-header,
.kytd-main .card .card-header {
  background: transparent;
  border-bottom: 1px solid var(--kytd-border);
  padding: 24px 28px;
  color: var(--kytd-primary);
  font-weight: 600;
}

.kytd-main .card-body,
.kytd-main .card .card-body {
  padding: 28px;
}

.kytd-main .card-body p,
.kytd-main .card-text {
  text-indent: 2em;
  line-height: 1.8;
  color: var(--kytd-text);
}

.kytd-main .card-body img,
.kytd-main .card-img-top {
  border-radius: 8px;
  max-width: 100%;
  height: auto;
}

.kytd-main .btn-primary {
  background: linear-gradient(135deg, var(--kytd-primary), var(--kytd-primary-light));
  border: none;
  border-radius: 8px;
  padding: 8px 20px;
}

.kytd-main .card-bottom {
  padding: 0 28px 28px;
}

/* 智能缩略图 */
.kytd-smart-img {
  transition: opacity 0.35s ease, filter 0.35s ease;
}

.kytd-smart-img.kytd-img-loading {
  opacity: 0;
}

.kytd-smart-img.kytd-img-ready {
  opacity: 1;
}

.kytd-product-card .img-wrap,
.kytd-cert-img,
.kytd-detail-img {
  position: relative;
  background: linear-gradient(110deg, #eceef1 8%, #f5f6f8 18%, #eceef1 33%);
  background-size: 200% 100%;
}

.kytd-product-card .img-wrap:has(.kytd-img-loading),
.kytd-cert-img:has(.kytd-img-loading) {
  animation: kytdShimmer 1.4s ease-in-out infinite;
}

@keyframes kytdShimmer {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

.kytd-product-card .kytd-smart-img,
.kytd-cert-img .kytd-smart-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  cursor: zoom-in;
}

.kytd-cert-img {
  text-align: center;
  padding: 16px;
  min-height: 200px;
}

.kytd-cert-img .kytd-smart-img {
  max-width: 100%;
  max-height: 360px;
}

.kytd-main .card-body img.kytd-smart-img,
.kytd-main .card-img-top.kytd-smart-img {
  width: 100%;
  height: auto;
  cursor: zoom-in;
}