/* 宁夏恒诚晟丰商贸有限公司 - 官网样式 */

:root {
  --color-primary: #1a4d8f;
  --color-primary-dark: #0f3566;
  --color-accent: #d98c1f;
  --color-text: #2b2f36;
  --color-text-light: #6b7280;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f7fa;
  --color-border: #e5e8ec;
  --max-width: 1160px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.3;
}

.brand-name small {
  display: block;
  font-size: 12px;
  font-weight: 400;
  color: var(--color-text-light);
  letter-spacing: 1px;
}

.main-nav ul {
  display: flex;
  gap: 32px;
}

.main-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary) 60%, #2f6fb8);
  color: #fff;
  padding: 88px 0 96px;
}

.hero .container {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 720px;
}

.hero-flex.container {
  max-width: var(--max-width);
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.hero-text {
  flex: 1;
  max-width: 600px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.hero-image {
  flex: 0 0 380px;
}

.hero-image img {
  width: 100%;
  height: auto;
}

.hero-tag {
  display: inline-block;
  align-self: flex-start;
  background: rgba(255, 255, 255, 0.15);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 2px;
}

.hero h1 {
  font-size: 38px;
  line-height: 1.4;
}

.hero p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 12px;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: #c47f16;
  transform: translateY(-1px);
}

.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #fff;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* Page banner (non-home pages) */
.page-banner {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: #fff;
  padding: 56px 0;
}

.page-banner h1 {
  font-size: 30px;
}

.page-banner .breadcrumb {
  margin-top: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
}

.page-banner .breadcrumb a:hover {
  color: #fff;
}

/* Sections */
section {
  padding: 72px 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 44px;
}

.section-head .eyebrow {
  color: var(--color-accent);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 3px;
  text-transform: uppercase;
}

.section-head h2 {
  font-size: 28px;
  margin-top: 10px;
  color: var(--color-primary-dark);
}

.section-head p {
  margin-top: 12px;
  color: var(--color-text-light);
}

/* Grid cards */
.grid {
  display: grid;
  gap: 24px;
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 28px 24px;
  transition: box-shadow 0.2s, transform 0.2s;
}

.card:hover {
  box-shadow: 0 10px 30px rgba(15, 53, 102, 0.08);
  transform: translateY(-3px);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 17px;
  margin-bottom: 8px;
  color: var(--color-primary-dark);
}

.card p {
  font-size: 14px;
  color: var(--color-text-light);
}

/* Product card */
.product-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  overflow: hidden;
}

.product-thumb {
  height: 140px;
  background: linear-gradient(135deg, var(--color-bg-alt), #e6ecf4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  color: var(--color-primary);
}

.product-thumb img {
  width: 56px;
  height: 56px;
}

.about-image img {
  width: 100%;
  height: auto;
  border-radius: 12px;
}

.contact-illustration {
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.contact-illustration img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  display: block;
}

.product-card .product-body {
  padding: 20px;
}

.product-card h3 {
  font-size: 16px;
  color: var(--color-primary-dark);
  margin-bottom: 6px;
}

.product-card p {
  font-size: 13px;
  color: var(--color-text-light);
}

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat .num {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.stat .label {
  margin-top: 6px;
  font-size: 14px;
  color: var(--color-text-light);
}

/* Timeline (about page) */
.timeline {
  border-left: 2px solid var(--color-border);
  margin-left: 12px;
  padding-left: 28px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.timeline-item {
  position: relative;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-item .year {
  font-weight: 700;
  color: var(--color-primary);
  font-size: 15px;
}

.timeline-item h3 {
  margin: 4px 0 6px;
  font-size: 16px;
}

.timeline-item p {
  color: var(--color-text-light);
  font-size: 14px;
}

/* News list */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.news-item {
  display: flex;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}

.news-item .date-box {
  flex-shrink: 0;
  width: 76px;
  height: 76px;
  border-radius: 8px;
  background: var(--color-bg-alt);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.news-item .date-box .day {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary-dark);
}

.news-item .date-box .month {
  font-size: 12px;
  color: var(--color-text-light);
}

.news-item h3 {
  font-size: 17px;
  margin-bottom: 6px;
  color: var(--color-primary-dark);
}

.news-item p {
  font-size: 14px;
  color: var(--color-text-light);
}

.tag {
  display: inline-block;
  font-size: 12px;
  color: var(--color-primary);
  background: rgba(26, 77, 143, 0.08);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 8px;
}

/* Contact */
.info-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.info-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.info-list .info-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.info-list .info-title {
  font-weight: 600;
  font-size: 14px;
  color: var(--color-text);
}

.info-list .info-desc {
  font-size: 13px;
  color: var(--color-text-light);
  margin-top: 2px;
}

.map-placeholder {
  height: 320px;
  border-radius: 10px;
  background: repeating-linear-gradient(45deg, var(--color-bg-alt), var(--color-bg-alt) 12px, #eef1f5 12px, #eef1f5 24px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: 14px;
  border: 1px dashed var(--color-border);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-form label {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  display: block;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

.contact-form .btn {
  border: none;
  cursor: pointer;
  align-self: flex-start;
}

/* CTA band */
.cta-band {
  background: var(--color-primary-dark);
  color: #fff;
  text-align: center;
}

.cta-band h2 {
  font-size: 26px;
  margin-bottom: 12px;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 24px;
}

/* Footer */
.site-footer {
  background: #12233b;
  color: rgba(255, 255, 255, 0.65);
  padding: 56px 0 24px;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .brand-name {
  color: #fff;
}

.footer-brand p {
  margin-top: 12px;
  max-width: 340px;
  color: rgba(255, 255, 255, 0.55);
}

.footer-col h4 {
  color: #fff;
  font-size: 14px;
  margin-bottom: 14px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom a:hover {
  color: rgba(255, 255, 255, 0.8);
}

/* Responsive */
@media (max-width: 860px) {
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    display: none;
  }

  .main-nav.open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
  }

  .main-nav a {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-toggle {
    display: flex;
  }

  .hero h1 {
    font-size: 28px;
  }

  .hero-flex.container {
    flex-direction: column;
  }

  .hero-image {
    flex: none;
    width: 100%;
    max-width: 320px;
  }

  .grid-3,
  .grid-4,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}