/* 辽冶官网公共样式 - 深蓝+钢铁灰工业风 */
:root {
  --primary: #0f2942;
  --primary-light: #1a3d5f;
  --accent: #c9a227;
  --steel: #64748b;
  --steel-light: #94a3b8;
  --text: #1e293b;
  --text-light: #64748b;
  --bg: #f1f5f9;
  --white: #fff;
  --max-width: 1200px;
  --header-height: 72px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--text);
  line-height: 1.7;
  background: var(--white);
}

a { color: var(--primary-light); text-decoration: none; }
a:hover { text-decoration: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* header */
.site-header {
  background: var(--primary);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}
.site-header .container {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-size: 26px;
  font-weight: 800;
  color: var(--white);
  letter-spacing: 1px;
}
.logo span { color: var(--accent); font-weight: 700; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.main-nav a {
  color: rgba(255,255,255,0.9);
  padding: 8px 18px;
  font-size: 18px;
  border-radius: 4px;
  transition: all 0.2s;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--white);
  background: rgba(255,255,255,0.12);
}
.main-nav .lang-switch {
  margin-left: 8px;
  padding: 6px 14px;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 4px;
}
.main-nav .lang-switch:hover {
  background: var(--accent);
  color: var(--primary);
}

.header-cta {
  background: var(--white);
  color: var(--primary) !important;
  padding: 10px 22px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 14px;
  transition: all 0.2s;
}
.header-cta:hover {
  background: var(--accent);
  color: var(--primary) !important;
}

/* banner */
.banner {
  position: relative;
  height: 640px;
  background: url('../.thumbs/1200/images/home/banner.jpg') center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
}
.banner::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(15,41,66,0.82) 0%, rgba(15,41,66,0.65) 100%);
}
.banner-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--white);
  max-width: 900px;
  padding: 0 24px;
}
.banner-content h1 {
  font-size: 52px;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.2;
  letter-spacing: 1px;
}
.banner-content p {
  font-size: 22px;
  margin-bottom: 36px;
  color: rgba(255,255,255,0.9);
}
.banner-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  padding: 14px 32px;
  font-weight: 700;
  border-radius: 4px;
  transition: all 0.2s;
  font-size: 16px;
}
.btn-primary {
  background: var(--accent);
  color: var(--primary);
}
.btn-primary:hover { background: #d4b43a; transform: translateY(-2px); }
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}
.btn-outline:hover { background: var(--white); color: var(--primary); transform: translateY(-2px); }
.btn-link {
  color: var(--primary-light);
  font-weight: 700;
  padding: 0;
}
.btn-link:hover { color: var(--accent); }
.btn-link::after {
  content: " →";
  transition: margin 0.2s;
}
.btn-link:hover::after { margin-left: 4px; }

/* section */
.section { padding: 80px 0; }
.section-light { background: var(--bg); }
.section-title {
  text-align: center;
  font-size: 36px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 16px;
}
.section-subtitle {
  text-align: center;
  color: var(--text-light);
  font-size: 18px;
  margin-bottom: 48px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* advantages */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
}
.advantage-card {
  background: var(--white);
  padding: 32px 24px;
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 4px 16px rgba(15,41,66,0.06);
  transition: transform 0.2s, box-shadow 0.2s;
}
.advantage-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(15,41,66,0.12);
}
.advantage-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 28px;
  font-weight: 700;
}
.advantage-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.advantage-text {
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.6;
}

/* product cards */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-card {
  background: var(--white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(15,41,66,0.06);
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(15,41,66,0.14);
}
.product-img {
  height: 220px;
  background: #e2e8f0 center/cover;
}
.product-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.product-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}
.product-text {
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 20px;
  flex: 1;
}

/* content */
.content-block { max-width: 900px; margin: 0 auto; }
.content-block p { margin-bottom: 16px; text-align: justify; }
.content-block h2 { color: var(--primary); margin: 32px 0 16px; font-size: 24px; }
.content-block h3 { color: var(--primary-light); margin: 24px 0 12px; font-size: 20px; }
.content-block ul { margin-left: 24px; margin-bottom: 16px; }
.content-block li { margin-bottom: 8px; }

.page-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: var(--white);
  padding: 60px 0;
  text-align: center;
}
.page-banner h1 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 12px;
}
.page-banner p {
  font-size: 18px;
  opacity: 0.9;
}

.detail-image {
  width: 100%;
  max-height: 500px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 32px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

/* honors */
.honor-list { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
.honor-item {
  background: var(--white);
  border-left: 4px solid var(--accent);
  padding: 16px 20px;
  border-radius: 4px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  min-width: 260px;
}

/* partners */
.partner-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.partner-item {
  background: var(--white);
  padding: 24px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.partner-item h3 { color: var(--primary); font-size: 18px; margin-bottom: 10px; }
.partner-item p { color: var(--text-light); font-size: 14px; }

/* gallery */
.gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.gallery img { width: 100%; height: auto; object-fit: contain; border-radius: 4px; }

/* contact */
.contact-info { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin-top: 16px; }
.contact-item { background: var(--white); padding: 12px; border-radius: 6px; box-shadow: 0 1px 4px rgba(0,0,0,0.04); }
.contact-item h4 { color: var(--primary); margin-bottom: 4px; font-size: 15px; }
.contact-item p { font-size: 15px; line-height: 1.5; word-break: break-word; }

/* footer */
.footer {
  background: var(--primary);
  color: rgba(255,255,255,0.85);
  padding: 60px 0 24px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo { margin-bottom: 16px; display: inline-block; }
.footer-brand p { line-height: 1.8; color: rgba(255,255,255,0.75); }
.footer-title {
  color: var(--white);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
}
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: rgba(255,255,255,0.75); transition: color 0.2s; }
.footer-links a:hover { color: var(--accent); }
.footer-contact p { margin-bottom: 10px; color: rgba(255,255,255,0.75); }
.footer-contact a { color: rgba(255,255,255,0.75); }
.footer-contact a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 20px;
  text-align: center;
  color: rgba(255,255,255,0.6);
}
.footer-bottom a { color: rgba(255,255,255,0.8); }
.footer-bottom a:hover { color: var(--accent); }

/* breadcrumb */
.breadcrumb { background: var(--bg); padding: 14px 0; font-size: 14px; border-bottom: 1px solid #e2e8f0; }
.breadcrumb a { color: var(--text-light); }
.breadcrumb a:hover { color: var(--primary-light); }
.breadcrumb span { color: var(--text); }

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--white);
  font-size: 26px;
  cursor: pointer;
  padding: 4px 8px;
  margin-left: auto;
}

/* responsive */
@media (max-width: 992px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .banner-content h1 { font-size: 40px; }
}

@media (max-width: 768px) {
  .site-header .container { height: auto; padding: 10px 16px; flex-wrap: wrap; }
  .logo { font-size: 22px; }
  .mobile-menu-btn { display: none; }
  .main-nav {
    display: flex;
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
    padding: 8px 0 0;
    gap: 0;
    background: transparent;
    box-shadow: none;
  }
  .main-nav.open { display: flex; }
  .main-nav a {
    flex: 1 1 30%;
    max-width: 33%;
    padding: 6px 4px;
    font-size: 16px;
    text-align: center;
    border-bottom: none;
    border-radius: 4px;
    white-space: nowrap;
  }
  .header-cta { display: none; }
  .banner { height: 480px; margin-top: 0; }
  .banner-content h1 { font-size: 32px; }
  .banner-content p { font-size: 18px; }
  .product-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .section { padding: 56px 0; }
  .section-title { font-size: 28px; }
}

/* admin link */
.admin-link {
  color: var(--accent) !important;
  font-weight: 700;
}
.admin-link:hover {
  background: rgba(201, 162, 39, 0.15) !important;
}

/* contact form */
.contact-form-section {
  background: var(--bg);
}
.contact-form-wrapper {
  max-width: 720px;
  margin: 0 auto;
  background: var(--white);
  padding: 24px;
  border-radius: 6px;
  box-shadow: 0 2px 10px rgba(15,41,66,0.05);
}
.contact-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 14px;
}
.contact-form .form-group {
  margin-bottom: 14px;
}
.contact-form label {
  display: block;
  margin-bottom: 4px;
  color: var(--text);
  font-weight: 500;
  font-size: 15px;
}
.contact-form .required::after {
  content: ' *';
  color: #dc2626;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 15px;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(26, 61, 95, 0.1);
}
.contact-form textarea {
  min-height: 80px;
  resize: vertical;
}
.contact-form .captcha-row {
  display: flex;
  gap: 12px;
  align-items: center;
}
.contact-form .captcha-row input {
  flex: 1;
  max-width: 160px;
}
.contact-form .captcha-img {
  height: 40px;
  cursor: pointer;
  border: 1px solid #d1d5db;
  border-radius: 6px;
}
.contact-form .form-actions {
  margin-top: 16px;
}
.contact-form .submit-btn {
  background: var(--primary);
  color: var(--white);
  border: none;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 700;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}
.contact-form .submit-btn:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
}
.contact-form .submit-btn:disabled {
  background: var(--steel-light);
  cursor: not-allowed;
  transform: none;
}
.contact-form .form-message {
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: 6px;
  display: none;
}
.contact-form .form-message.success {
  display: block;
  background: #d1fae5;
  color: #065f46;
}
.contact-form .form-message.error {
  display: block;
  background: #fee2e2;
  color: #991b1b;
}

/* success page */
.success-page {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.success-box {
  background: var(--white);
  padding: 60px 40px;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(15,41,66,0.06);
  max-width: 560px;
}
.success-box h2 {
  color: var(--primary);
  font-size: 28px;
  margin-bottom: 16px;
}
.success-box p {
  color: var(--text-light);
  margin-bottom: 32px;
}
.success-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.success-actions a {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 6px;
  font-weight: 600;
  transition: all 0.2s;
}
.success-actions .btn-primary {
  background: var(--primary);
  color: var(--white);
}
.success-actions .btn-primary:hover {
  background: var(--primary-light);
}
.success-actions .btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.success-actions .btn-outline:hover {
  background: var(--primary);
  color: var(--white);
}

/* PC 端联系我们页面紧凑布局，让一屏能看到留言表单 */
@media (min-width: 769px) {
  .contact-page .section { padding: 24px 0; }
  .contact-page .section-title { font-size: 24px; margin-bottom: 6px; }
  .contact-page .section-subtitle { font-size: 15px; margin-bottom: 6px; }
  .contact-page .contact-info { gap: 10px; margin-top: 12px; }
  .contact-page .contact-item { padding: 10px; }
  .contact-page .contact-item h4 { margin-bottom: 3px; font-size: 14px; }
  .contact-page .contact-item p { font-size: 14px; line-height: 1.4; }
  .contact-page .contact-form-wrapper { padding: 20px; }
  .contact-page .contact-form .form-row { gap: 12px; margin-bottom: 10px; }
  .contact-page .contact-form .form-group { margin-bottom: 10px; }
  .contact-page .contact-form label { margin-bottom: 3px; font-size: 14px; }
  .contact-page .contact-form input,
  .contact-page .contact-form textarea { padding: 8px 10px; font-size: 14px; }
  .contact-page .contact-form textarea { min-height: 60px; }
  .contact-page .contact-form .captcha-img { height: 36px; }
  .contact-page .contact-form .form-actions { margin-top: 12px; }
  .contact-page .contact-form .submit-btn { padding: 10px 24px; font-size: 14px; }
}

/* 手机端联系我们页面紧凑布局 */
@media (max-width: 640px) {
  .contact-page .section { padding: 20px 0; }
  .contact-page .section-title { font-size: 22px; margin-bottom: 6px; }
  .contact-page .section-subtitle { font-size: 14px; margin-bottom: 6px; }
  .contact-page .contact-info { grid-template-columns: 1fr; gap: 8px; margin-top: 10px; }
  .contact-page .contact-item { padding: 10px; }
  .contact-form-wrapper {
    padding: 16px;
  }
  .contact-form .form-row {
    grid-template-columns: 1fr;
    gap: 10px;
    margin-bottom: 10px;
  }
  .contact-form .form-group {
    margin-bottom: 10px;
  }
  .contact-form label {
    font-size: 14px;
    margin-bottom: 3px;
  }
  .contact-form input,
  .contact-form textarea {
    padding: 8px 10px;
    font-size: 14px;
  }
  .contact-form textarea {
    min-height: 60px;
  }
  .contact-form .submit-btn {
    padding: 10px 24px;
    font-size: 14px;
  }
  .success-box {
    padding: 32px 20px;
  }
  .success-box h2 {
    font-size: 22px;
    margin-bottom: 10px;
  }
  .success-box p {
    margin-bottom: 20px;
  }
}