/* 米迪电机 — 纯静态站点样式（系统字体栈，无外链 Web 字体） */
:root {
  --color-bg: #f6f8fb;
  --color-surface: #ffffff;
  --color-text: #1a2332;
  --color-muted: #5c6b7f;
  --color-accent: #0d4f8b;
  --color-accent-hover: #0a3d6d;
  --color-border: #e2e8f0;
  --radius: 10px;
  --shadow: 0 4px 24px rgba(13, 79, 139, 0.08);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei",
    "WenQuanYi Micro Hei", "Noto Sans CJK SC", sans-serif;
  --max-w: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

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

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.container {
  width: min(100% - 2rem, var(--max-w));
  margin-inline: auto;
}

/* ----- Header ----- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.03);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo img {
  display: block;
  max-height: 52px;
  width: auto;
}

.nav-toggle {
  display: none;
  padding: 0.5rem 0.85rem;
  font-family: inherit;
  font-size: 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-surface);
  cursor: pointer;
}

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.15rem 0.5rem;
}

.site-nav > ul > li {
  position: relative;
}

.site-nav > ul > li > a {
  display: block;
  padding: 0.5rem 0.65rem;
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 6px;
  text-decoration: none;
}

.site-nav > ul > li > a:hover,
.site-nav > ul > li > a[aria-current="page"] {
  background: rgba(13, 79, 139, 0.08);
  color: var(--color-accent);
  text-decoration: none;
}

.site-nav .sub {
  display: none;
  position: absolute;
  left: 0;
  top: 100%;
  min-width: 200px;
  padding: 0.4rem 0;
  margin: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.site-nav li:hover .sub,
.site-nav li:focus-within .sub {
  display: block;
}

.site-nav .sub a {
  display: block;
  padding: 0.45rem 1rem;
  color: var(--color-text);
  font-size: 0.9rem;
  font-weight: 400;
  text-decoration: none;
}

.site-nav .sub a:hover {
  background: var(--color-bg);
  color: var(--color-accent);
}

@media (max-width: 960px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 0.75rem 1rem 1rem;
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav > ul {
    flex-direction: column;
    align-items: stretch;
  }

  .site-nav > ul > li > a {
    padding: 0.65rem 0.5rem;
  }

  .site-nav .sub {
    position: static;
    display: block;
    border: none;
    box-shadow: none;
    padding-left: 0.75rem;
    margin-top: 0.25rem;
  }

  .site-nav li:hover .sub {
    display: block;
  }
}

/* ----- Hero ----- */
.hero {
  position: relative;
  background: linear-gradient(135deg, #0d4f8b 0%, #1a6cb5 45%, #0a3d5c 100%);
  color: #fff;
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../../images/871efcab-0bd5-4fe5-ab39-7bb9bcfeea3b.jpg") center / cover no-repeat;
  opacity: 0.18;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.hero .tagline {
  margin: 0 0 1.25rem;
  font-size: 1.1rem;
  opacity: 0.95;
}

.hero .lead {
  margin: 0 0 1.5rem;
  max-width: 42em;
  font-size: 1.02rem;
  line-height: 1.75;
  opacity: 0.92;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.35rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

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

.btn-primary:hover {
  background: #eef4fa;
  color: var(--color-accent-hover);
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.65);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  text-decoration: none;
}

/* ----- Sections ----- */
.section {
  padding: clamp(2rem, 4vw, 3.5rem) 0;
}

.section-title {
  margin: 0 0 0.35rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
}

.section-intro {
  margin: 0 0 1.5rem;
  color: var(--color-muted);
  max-width: 48em;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
  transition: box-shadow 0.2s, transform 0.2s;
}

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

.card a.card-link {
  display: block;
  color: inherit;
  text-decoration: none;
}

.card-image {
  aspect-ratio: 16 / 10;
  background: var(--color-bg);
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-body {
  padding: 1rem 1.15rem 1.2rem;
}

.card-body h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-accent);
}

.card-body p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-muted);
}

/* ----- Page main (inner) ----- */
.page-hero {
  background: linear-gradient(90deg, #0d4f8b, #1a6cb5);
  color: #fff;
  padding: 1.75rem 0;
}

.page-hero h1 {
  margin: 0;
  font-size: 1.65rem;
  font-weight: 700;
}

.breadcrumb {
  margin: 0.35rem 0 0;
  font-size: 0.88rem;
  opacity: 0.9;
}

.breadcrumb a {
  color: #fff;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-main {
  padding: 2rem 0 3rem;
}

.prose {
  background: var(--color-surface);
  padding: clamp(1.25rem, 3vw, 2rem);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
}

.prose h2 {
  margin: 1.5rem 0 0.75rem;
  font-size: 1.2rem;
}

.prose h2:first-child {
  margin-top: 0;
}

.prose p {
  margin: 0 0 1rem;
  text-align: justify;
  text-justify: inter-ideograph;
}

.prose ul,
.prose ol {
  margin: 0 0 1rem;
  padding-left: 1.35rem;
}

.prose li {
  margin-bottom: 0.35rem;
}

.prose .meta {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: 1rem;
}

.figure-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
}

.figure-grid figure {
  margin: 0;
  text-align: center;
}

.figure-grid figcaption {
  margin-top: 0.35rem;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.figure-grid img {
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

.contact-card dl {
  margin: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.35rem 1rem;
  font-size: 0.95rem;
}

.contact-card dt {
  margin: 0;
  color: var(--color-muted);
  font-weight: 500;
}

.contact-card dd {
  margin: 0;
}

.map-embed {
  width: 100%;
  min-height: 280px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
}

.map-link {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.92rem;
}

.news-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.news-list li {
  border-bottom: 1px solid var(--color-border);
  padding: 0.85rem 0;
}

.news-list li:last-child {
  border-bottom: none;
}

.news-list a {
  font-weight: 600;
  color: var(--color-text);
}

.news-list a:hover {
  color: var(--color-accent);
}

.news-list time {
  display: block;
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: 0.25rem;
}

/* ----- Footer ----- */
.site-footer {
  margin-top: auto;
  padding: 2rem 0;
  background: #1a2332;
  color: #a8b4c4;
  font-size: 0.88rem;
  text-align: center;
}

.site-footer p {
  margin: 0.25rem 0;
}

.site-footer a {
  color: #c5d0e0;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

.two-col {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 900px) {
  .two-col {
    grid-template-columns: 1fr 300px;
    align-items: start;
  }
}

.sidebar-img {
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.product-layout {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .product-layout {
    grid-template-columns: minmax(200px, 340px) 1fr;
    align-items: start;
  }
}

.product-layout .thumb {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.5rem;
  background: #fff;
}

.spec-img {
  margin: 1rem 0;
  border-radius: 6px;
  border: 1px solid var(--color-border);
}

/* ----- 产品参数表（YE3 等） ----- */
.table-wrap {
  overflow-x: auto;
  margin: 0.75rem 0 1.5rem;
  -webkit-overflow-scrolling: touch;
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.spec-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 0.82rem;
  line-height: 1.4;
}

.spec-table caption {
  caption-side: top;
  text-align: left;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.5rem 0 0.35rem;
  color: var(--color-text);
}

.spec-table th,
.spec-table td {
  border: 1px solid var(--color-border);
  padding: 0.4rem 0.45rem;
  text-align: center;
}

.spec-table thead th {
  background: rgba(13, 79, 139, 0.1);
  font-weight: 600;
  white-space: nowrap;
}

.spec-table tbody tr:nth-child(even) {
  background: var(--color-bg);
}

.spec-note {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin: 0 0 0.75rem;
}

.prose h3.spec-pole-title {
  margin: 1.35rem 0 0.25rem;
  font-size: 1.05rem;
  color: var(--color-accent);
}