/* ============================================
   美名五金官网 全局样式
   工业硬朗风：深灰蓝 + 琥珀橙
   ============================================ */

:root {
  --dark-1: #1B2632;   /* 首屏深底 */
  --dark-2: #22303C;   /* 导航/页脚底 */
  --dark-line: #31414F; /* 深色分隔线 */
  --accent: #EF9F27;   /* 主点缀橙 */
  --accent-dark: #BA7517;
  --accent-text: #412402;
  --t-white: #FFFFFF;
  --t-light: #C7D0D9;
  --t-muted: #9AA7B2;
  --t-dim: #6B7987;
  --page-bg: #F5F5F2;
  --card-bg: #FFFFFF;
  --t-dark: #2C2C2A;
  --t-dark-2: #5F5E5A;
  --t-dark-3: #888780;
  --border: #E3E1DA;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--t-dark);
  background: var(--page-bg);
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  background: var(--dark-2);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.logo-cn {
  font-size: 22px;
  font-weight: 700;
  color: var(--t-white);
  letter-spacing: 2px;
}

.logo-en {
  font-size: 11px;
  color: var(--t-muted);
  letter-spacing: 1px;
}

.logo-mark {
  width: 10px;
  height: 22px;
  background: var(--accent);
  align-self: center;
  margin-right: 4px;
}

.nav-links {
  display: flex;
  gap: 34px;
}

.nav-links a {
  font-size: 15px;
  color: var(--t-light);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color .2s, border-color .2s;
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--t-light);
  margin: 5px 0;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  padding: 12px 32px;
  font-size: 15px;
  border-radius: 6px;
  cursor: pointer;
  border: none;
  transition: background .2s, color .2s, border-color .2s;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
  font-weight: 700;
}

.btn-primary:hover { background: #F7B14C; }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--dark-line);
  color: var(--t-light);
}

.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- 首屏 ---------- */
.hero {
  background: var(--dark-1);
  background-image: repeating-linear-gradient(
    135deg,
    transparent 0px, transparent 22px,
    rgba(255,255,255,.02) 22px, rgba(255,255,255,.02) 23px
  );
  padding: 96px 0 88px;
}

.hero-tag {
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--accent);
  margin-bottom: 14px;
}

.hero h1 {
  font-size: 44px;
  font-weight: 700;
  color: var(--t-white);
  line-height: 1.35;
  margin-bottom: 18px;
  letter-spacing: 1px;
}

.hero p {
  font-size: 17px;
  color: var(--t-muted);
  max-width: 620px;
  margin-bottom: 34px;
}

.hero-actions { display: flex; gap: 14px; }

/* ---------- 数据栏 ---------- */
.stats {
  background: var(--dark-2);
  border-top: 1px solid var(--dark-line);
}

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

.stat-item {
  text-align: center;
  padding: 26px 12px;
  border-right: 1px solid var(--dark-line);
}

.stat-item:last-child { border-right: none; }

.stat-num {
  font-size: 30px;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 13px;
  color: var(--t-muted);
  margin-top: 2px;
}

/* ---------- 通用区块 ---------- */
.section { padding: 72px 0; }

.section-head { text-align: center; margin-bottom: 44px; }

.section-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--t-dark);
  display: inline-block;
  position: relative;
  padding: 0 18px;
}

.section-title::before,
.section-title::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 10px;
  height: 10px;
  background: var(--accent);
  transform: translateY(-50%) rotate(45deg);
}

.section-title::before { left: -12px; }
.section-title::after { right: -12px; }

.section-sub {
  font-size: 14px;
  color: var(--t-dark-3);
  margin-top: 10px;
}

/* ---------- 产品卡片 ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.product-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 24px rgba(27, 38, 50, .10);
}

.product-thumb {
  height: 170px;
  background: #E8E6DE;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  color: var(--t-dark-3);
  font-size: 14px;
}

.product-thumb img { width: 100%; height: 100%; object-fit: cover; }

.product-info { padding: 18px 18px 22px; }

.product-info h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
}

.product-info p {
  font-size: 13px;
  color: var(--t-dark-2);
}

.product-link {
  display: inline-block;
  margin-top: 12px;
  font-size: 13px;
  color: var(--accent-dark);
  font-weight: 700;
}

.product-link:hover { color: var(--accent); }

/* ---------- 加工能力 ---------- */
.capability {
  background: var(--dark-1);
}

.capability .section-title { color: var(--t-white); }

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.cap-card {
  background: var(--dark-2);
  border: 1px solid var(--dark-line);
  border-radius: 10px;
  padding: 28px 24px;
}

.cap-num {
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 10px;
}

.cap-card h3 {
  font-size: 19px;
  color: var(--t-white);
  margin-bottom: 8px;
}

.cap-card p {
  font-size: 14px;
  color: var(--t-muted);
}

/* ---------- 询盘横幅 ---------- */
.cta-band {
  background: var(--accent);
  padding: 34px 0;
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.cta-inner h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent-text);
}

.cta-inner p {
  font-size: 14px;
  color: #6B4A10;
  margin-top: 2px;
}

.cta-band .btn { background: var(--dark-2); color: var(--t-white); }
.cta-band .btn:hover { background: var(--dark-1); }

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--dark-2);
  padding: 48px 0 0;
  color: var(--t-muted);
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 36px;
}

.footer-grid h3 {
  font-size: 16px;
  color: var(--t-white);
  margin-bottom: 14px;
}

.footer-grid li { margin-bottom: 8px; }

.footer-grid a:hover { color: var(--accent); }

.footer-logo-cn {
  font-size: 20px;
  font-weight: 700;
  color: var(--t-white);
  letter-spacing: 2px;
  margin-bottom: 10px;
}

.footer-bottom {
  border-top: 1px solid var(--dark-line);
  padding: 16px 0;
  text-align: center;
  font-size: 12px;
  color: var(--t-dim);
}

/* ---------- 子页首屏 ---------- */
.page-hero {
  background: var(--dark-1);
  padding: 72px 0;
}

.page-hero h1 {
  font-size: 38px;
  color: var(--t-white);
  font-weight: 700;
  letter-spacing: 3px;
}

.page-hero p {
  font-size: 16px;
  color: var(--t-muted);
  margin-top: 10px;
  letter-spacing: 1px;
}

/* ---------- 表格 ---------- */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  font-size: 14px;
}

.spec-table th, .spec-table td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}

.spec-table th {
  background: #EFEEE8;
  font-weight: 700;
  white-space: nowrap;
}

/* ---------- 询盘表单 ---------- */
.form-wrap {
  max-width: 720px;
  margin: 0 auto;
}

.form-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 36px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group { margin-bottom: 18px; }

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 6px;
}

.form-group label .req { color: #C0392B; }

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  font-size: 15px;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #FBFBF9;
  outline: none;
  transition: border-color .2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

.form-note {
  font-size: 12px;
  color: var(--t-dark-3);
  margin-top: 14px;
}

/* ---------- 联系信息栏（联系我们页） ---------- */
.contact-info-bar {
  background: var(--page-bg);
  padding: 60px 0 64px;
}

.contact-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.contact-info-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 36px 30px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: box-shadow .25s, transform .25s;
}

.contact-info-item:hover {
  box-shadow: 0 12px 32px rgba(27, 38, 50, .10);
  transform: translateY(-3px);
}

.contact-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(239, 159, 39, .10);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-icon svg {
  width: 26px;
  height: 26px;
}

.contact-label {
  font-size: 20px;
  font-weight: 700;
  color: var(--t-dark);
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.contact-text p {
  font-size: 16px;
  color: var(--t-dark-2);
  line-height: 2;
  margin: 0;
}

.contact-text a {
  color: var(--accent-dark);
  text-decoration: none;
  transition: color .2s;
}

.contact-text a:hover { color: var(--accent); }

/* ---------- 合作共赢（联系我们页） ---------- */
.cooperation {
  background: var(--card-bg);
  padding: 56px 0;
  border-bottom: 1px solid var(--border);
}

.coop-gallery {
  display: grid;
  grid-template-columns: 2fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 16px;
}

.coop-gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 12px;
  display: block;
  transition: transform .35s ease, box-shadow .35s ease;
}

.coop-gallery .coop-main { grid-row: 1 / span 2; }

.coop-gallery img:hover {
  transform: scale(1.03);
  box-shadow: 0 10px 28px rgba(27, 38, 50, .14);
}

.coop-credit {
  font-size: 12px;
  color: var(--t-dark-3);
  margin-top: 14px;
  text-align: right;
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .capability-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: none; }
  .stat-item:nth-child(1), .stat-item:nth-child(2) { border-bottom: 1px solid var(--dark-line); }
  .hero h1 { font-size: 32px; }
  .cta-inner { flex-direction: column; text-align: center; }
  .contact-info-grid { grid-template-columns: 1fr; }
  .coop-gallery { grid-template-columns: 1fr; grid-template-rows: none; }
  .coop-gallery .coop-main { grid-row: auto; }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--dark-2);
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
    border-top: 1px solid var(--dark-line);
  }

  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; border-bottom: none; }
  .nav-toggle { display: block; }

  .product-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero { padding: 64px 0 56px; }
  .form-card { padding: 24px 18px; }
}

/* ============================================
   产品列表页（数据驱动）
   ============================================ */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tab {
  padding: 8px 18px;
  font-size: 14px;
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--t-dark-2);
  cursor: pointer;
  transition: all .2s;
}

.tab:hover { border-color: var(--accent); color: var(--accent-dark); }

.tab.active {
  background: var(--dark-2);
  color: var(--t-white);
  border-color: var(--dark-2);
}

.search-box {
  position: relative;
  min-width: 220px;
  flex: 1;
  max-width: 320px;
}

.search-box input {
  width: 100%;
  padding: 9px 14px 9px 36px;
  font-size: 14px;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: #FFFFFF url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23888780' stroke-width='2'><circle cx='11' cy='11' r='7'/><path d='M21 21l-4-4'/></svg>") 12px center no-repeat;
  outline: none;
}

.search-box input:focus { border-color: var(--accent); }

.series-list { display: block; }

.series-list > .product-grid { margin-bottom: 24px; }

.series-heading {
  font-size: 18px;
  font-weight: 700;
  color: var(--t-dark);
  margin: 32px 0 16px;
  padding-left: 12px;
  border-left: 4px solid var(--accent);
}

.pcard {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .2s, box-shadow .2s;
}

.pcard:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 24px rgba(27, 38, 50, .10);
}

.pcard-thumb {
  height: 180px;
  background: #E8E6DE;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--t-dark-3);
  font-size: 14px;
}

.pcard-thumb img { width: 100%; height: 100%; object-fit: cover; }

.pcard-body { padding: 14px 16px 18px; flex: 1; display: flex; flex-direction: column; }

.pcard-series {
  display: inline-block;
  font-size: 11px;
  color: var(--accent-dark);
  background: #FAEEDA;
  padding: 2px 10px;
  border-radius: 10px;
  margin-bottom: 8px;
  align-self: flex-start;
}

.pcard-body h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
}

.pcard-desc {
  font-size: 13px;
  color: var(--t-dark-2);
  margin-bottom: 12px;
  min-height: 20px;
}

.pcard .spec-table { font-size: 12px; margin-bottom: 12px; }

.pcard .spec-table th { width: 68px; padding: 5px 8px; }

.pcard .spec-table td { padding: 5px 8px; }

.pcard-actions { margin-top: auto; }

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--t-dark-3);
}

.placeholder-card .pcard-thumb { background: #F0EEE6; }

.placeholder-card .pcard-body { align-items: center; text-align: center; }

@media (max-width: 640px) {
  .toolbar { flex-direction: column; align-items: stretch; }
  .search-box { max-width: none; }
}

/* ============================================
   关于我们 / 公司介绍
   ============================================ */
.about { padding: 72px 0; background: var(--page-bg); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-text h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--t-dark);
  margin-bottom: 24px;
  display: inline-block;
  position: relative;
  padding-left: 18px;
}

.about-text h2::before {
  content: "";
  position: absolute;
  left: 0; top: 6px;
  width: 6px; height: calc(100% - 12px);
  background: var(--accent);
}

.about-text p {
  font-size: 15px;
  line-height: 1.95;
  color: var(--t-dark-2);
  margin-bottom: 16px;
}

.about-text strong {
  color: var(--accent-dark);
  font-weight: 700;
}

.about-side h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--t-dark);
  margin-bottom: 18px;
}

.about-values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 18px;
}

.about-value {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 16px 18px;
}

.about-value .label {
  font-size: 13px;
  color: var(--t-dark-3);
}

.about-value .text {
  font-size: 15px;
  font-weight: 700;
  color: var(--t-dark);
  margin-top: 4px;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}

.about-stat {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 10px;
  text-align: center;
}

.about-stat .num {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent-dark);
}

.about-stat .lbl {
  font-size: 12px;
  color: var(--t-dark-3);
  margin-top: 4px;
}

/* ============================================
   加工现场 / 检测中心 图集
   ============================================ */
.gallery { padding: 72px 0; background: #FFFFFF; }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: start;
}

.gallery-item {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  background: #E8E6DE;
  border: 1px solid var(--border);
}

.gallery-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform .3s;
}

.gallery-item:hover img { transform: scale(1.02); }

.gallery-item.wide { grid-column: span 2; }

.gallery-caption {
  background: var(--dark-2);
  padding: 36px 24px;
  border-radius: 10px;
  color: var(--t-light);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.gallery-caption h3 {
  color: var(--t-white);
  font-size: 20px;
  margin-bottom: 8px;
}

.gallery-caption p {
  color: var(--t-muted);
  font-size: 14px;
  line-height: 1.7;
}

/* ============================================
   刀片画廊（产品页）& 定制案例页
   ============================================ */
.series-note {
  grid-column: 1 / -1;
  background: var(--page-bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 14px 18px;
  margin-bottom: 8px;
  color: var(--t-dark-2);
  font-size: 14px;
  line-height: 1.7;
}

.series-note a { color: var(--accent-dark); font-weight: 500; }

/* 案例条目卡片：图片 + 标题 */
.case-item {
  display: flex;
  flex-direction: column;
  border-radius: 10px;
  overflow: hidden;
  background: #FFFFFF;
  border: 1px solid var(--border);
  transition: box-shadow .25s, transform .25s;
}

.case-item:hover {
  box-shadow: 0 8px 24px rgba(27, 38, 50, .12);
  transform: translateY(-2px);
}

.case-thumb {
  aspect-ratio: 4 / 3;
  background: #E8E6DE;
  overflow: hidden;
}

.case-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.case-cap {
  padding: 12px 14px;
  font-size: 14px;
  color: var(--t-dark-1);
  border-top: 1px solid var(--border);
  text-align: center;
}

/* 首页定制案例入口 */
.cases-entry { background: var(--page-bg); }

.cases-entry-inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.cases-entry-inner p {
  color: var(--t-dark-2);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 22px;
}

/* ============================================
   合作客户
   ============================================ */
.clients { padding: 72px 0; background: var(--page-bg); }

.clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.client-card {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 84px;
  transition: box-shadow .2s, transform .2s, border-color .2s;
}

.client-card:hover {
  box-shadow: 0 8px 18px rgba(27, 38, 50, .08);
  transform: translateY(-2px);
  border-color: var(--accent);
}

.client-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--t-dark);
  letter-spacing: 2px;
}

/* ============================================
   新增区块响应式
   ============================================ */
@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 28px; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-item.wide { grid-column: span 2; }
  .clients-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .about-stats { grid-template-columns: 1fr; }
  .about-values { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr; }
  .gallery-item.wide { grid-column: span 1; aspect-ratio: 4 / 3; }
  .clients-grid { grid-template-columns: 1fr; }
}