/* ===== 设计Token ===== */
:root {
  --bg: #F5F3EF;
  --bg-dark: #141414;
  --bg-wood: #2A1F17;
  --bg-card: #FFFFFF;
  --text: #1F1F1F;
  --text-secondary: #5C5C5C;
  --text-muted: #8A8A8A;
  --text-on-dark: #EDEAE4;
  --text-on-dark-muted: #9A958C;
  --accent: #A8845A;
  --accent-light: #C4A06B;
  --accent-dark: #8A6A42;
  --border: #D8D3C8;
  --border-dark: #3A3A3A;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.1);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.15);
  --font-display: 'Noto Serif SC', 'Songti SC', serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --max-width: 1280px;
  --nav-height: 72px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* ===== 技术图纸线条装饰（签名元素） ===== */
.tech-line {
  position: relative;
}
.tech-line::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  width: 48px; height: 1px;
  background: var(--accent);
}
.tech-line-h {
  height: 1px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent) 60px, transparent 60px, transparent 100%);
  position: relative;
}
.tech-line-h::after {
  content: '';
  position: absolute;
  right: 0; top: 0;
  width: 60px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent));
}
.dimension-mark {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--accent);
  text-transform: uppercase;
  font-weight: 500;
}
.dimension-mark::before {
  content: '';
  width: 32px; height: 1px;
  background: var(--accent);
}

/* ===== 导航栏 ===== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(245,243,239,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  transition: all 0.3s ease;
}
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-logo .logo-mark {
  width: 32px; height: 32px;
  border: 1.5px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--accent);
  font-weight: 700;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}
.nav-links a {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-secondary);
  transition: color 0.2s;
  position: relative;
  padding: 4px 0;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text);
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 100%; height: 1.5px;
  background: var(--accent);
}
.nav-cta {
  background: var(--text);
  color: var(--bg);
  padding: 10px 24px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 1px;
  transition: all 0.2s;
}
.nav-cta:hover {
  background: var(--accent);
  color: #fff;
}
.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav-mobile-toggle span {
  width: 24px; height: 1.5px;
  background: var(--text);
  transition: all 0.3s;
}

/* ===== 主内容区 ===== */
.main {
  padding-top: var(--nav-height);
  min-height: 100vh;
}
.view { display: none; }
.view.active { display: block; animation: fadeIn 0.4s ease; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

/* ===== 通用区块 ===== */
.section {
  padding: 100px 0;
}
.section-label {
  font-size: 12px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-label::before {
  content: '';
  width: 32px; height: 1px;
  background: var(--accent);
}
.section-title {
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 20px;
}
.section-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.8;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-dark);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('images/hero-showroom.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(20,20,20,0.85) 0%, rgba(20,20,20,0.5) 50%, rgba(42,31,23,0.7) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
  width: 100%;
}
.hero-eyebrow {
  font-size: 13px;
  letter-spacing: 6px;
  color: var(--accent-light);
  text-transform: uppercase;
  margin-bottom: 28px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 16px;
}
.hero-eyebrow::before {
  content: '';
  width: 48px; height: 1px;
  background: var(--accent);
}
.hero-title {
  font-family: var(--font-display);
  font-size: 56px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-on-dark);
  margin-bottom: 24px;
  max-width: 820px;
}
.hero-title .accent-text {
  color: var(--accent-light);
}
.hero-desc {
  font-size: 18px;
  color: var(--text-on-dark-muted);
  max-width: 620px;
  line-height: 1.9;
  margin-bottom: 48px;
}
.hero-ctas {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 1.5px;
  transition: all 0.25s ease;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(168,132,90,0.35);
}
.btn-outline {
  border-color: rgba(237,234,228,0.4);
  color: var(--text-on-dark);
  background: transparent;
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  background: rgba(168,132,90,0.08);
}
.btn-dark {
  background: var(--text);
  color: var(--bg);
}
.btn-dark:hover {
  background: var(--accent);
  color: #fff;
}
.hero-stats {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  z-index: 2;
  border-top: 1px solid rgba(237,234,228,0.12);
  background: rgba(20,20,20,0.6);
  backdrop-filter: blur(8px);
}
.hero-stats-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 28px 32px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.stat-item .stat-num {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--accent-light);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-item .stat-label {
  font-size: 12px;
  color: var(--text-on-dark-muted);
  letter-spacing: 1px;
}

/* ===== 痛点区块 ===== */
.pain-section {
  background: var(--bg);
}
.pain-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 56px;
}
.pain-card {
  background: var(--bg-card);
  padding: 36px 28px;
  border: 1px solid var(--border);
  position: relative;
  transition: all 0.3s ease;
}
.pain-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.pain-card .pain-num {
  font-family: var(--font-display);
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 20px;
  font-weight: 600;
}
.pain-card .pain-icon {
  width: 44px; height: 44px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
}
.pain-card .pain-icon svg {
  width: 22px; height: 22px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 1.5;
}
.pain-card h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text);
}
.pain-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== 七大赋能体系 ===== */
.services-preview {
  background: var(--bg-dark);
  color: var(--text-on-dark);
}
.services-preview .section-title { color: var(--text-on-dark); }
.services-preview .section-subtitle { color: var(--text-on-dark-muted); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border-dark);
  margin-top: 56px;
  border: 1px solid var(--border-dark);
}
.service-card {
  background: var(--bg-dark);
  padding: 40px 32px;
  transition: all 0.3s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.service-card:hover {
  background: #1E1E1E;
}
.service-card:hover::before {
  transform: scaleX(1);
}
.service-card .svc-num {
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 3px;
  margin-bottom: 24px;
  font-weight: 600;
}
.service-card .svc-icon {
  width: 48px; height: 48px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.service-card .svc-icon svg {
  width: 32px; height: 32px;
  stroke: var(--accent-light);
  fill: none;
  stroke-width: 1.2;
}
.service-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-on-dark);
}
.service-card p {
  font-size: 13.5px;
  color: var(--text-on-dark-muted);
  line-height: 1.8;
}

/* ===== 双合作模式 ===== */
.partnership-preview {
  background: var(--bg);
}
.partnership-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 56px;
}
.partner-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 48px 40px;
  position: relative;
  transition: all 0.3s ease;
}
.partner-card.featured {
  border-color: var(--accent);
  background: linear-gradient(180deg, #FFFEFB 0%, #F9F5EE 100%);
}
.partner-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}
.partner-card .partner-badge {
  position: absolute;
  top: -1px; right: 32px;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  padding: 6px 16px;
  letter-spacing: 2px;
  font-weight: 500;
}
.partner-card .partner-type {
  font-size: 12px;
  letter-spacing: 4px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 16px;
  font-weight: 500;
}
.partner-card h3 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
}
.partner-card .partner-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
}
.partner-features {
  list-style: none;
  margin-bottom: 36px;
}
.partner-features li {
  padding: 10px 0;
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  border-bottom: 1px solid var(--border);
}
.partner-features li:last-child { border-bottom: none; }
.partner-features li::before {
  content: '';
  width: 6px; height: 6px;
  background: var(--accent);
  margin-top: 8px;
  flex-shrink: 0;
}
.partner-card .btn { width: 100%; justify-content: center; }

/* ===== 案例精选 ===== */
.cases-preview {
  background: var(--bg);
}
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 56px;
}
.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s ease;
}
.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.case-card .case-img {
  height: 240px;
  background-size: cover;
  background-position: center;
  position: relative;
  overflow: hidden;
}
.case-card .case-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.4) 100%);
}
.case-card .case-tag {
  position: absolute;
  top: 16px; left: 16px;
  background: rgba(20,20,20,0.8);
  color: var(--accent-light);
  font-size: 11px;
  padding: 5px 12px;
  letter-spacing: 1px;
  z-index: 2;
}
.case-card .case-body {
  padding: 28px;
}
.case-card .case-location {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.case-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
}
.case-card p {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.case-card .case-meta {
  display: flex;
  gap: 16px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.case-card .case-meta span {
  font-size: 12px;
  color: var(--text-muted);
}

/* ===== CTA区块 ===== */
.cta-section {
  background: var(--bg-wood);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('images/manufacturing-base.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.12;
}
.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.cta-inner .section-label {
  justify-content: center;
  color: var(--accent-light);
}
.cta-inner .section-label::before { display: none; }
.cta-inner h2 {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 700;
  color: var(--text-on-dark);
  margin-bottom: 20px;
  line-height: 1.3;
}
.cta-inner p {
  font-size: 17px;
  color: var(--text-on-dark-muted);
  margin-bottom: 40px;
  line-height: 1.8;
}
.cta-inner .hero-ctas {
  justify-content: center;
}

/* ===== 页脚 ===== */
.footer {
  background: #0E0E0E;
  color: var(--text-on-dark-muted);
  padding: 64px 0 32px;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border-dark);
}
.footer-brand .nav-logo {
  color: var(--text-on-dark);
  margin-bottom: 20px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-on-dark);
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.footer-col ul {
  list-style: none;
}
.footer-col li {
  margin-bottom: 12px;
}
.footer-col a {
  font-size: 13.5px;
  color: var(--text-on-dark-muted);
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--accent-light); }
.footer-bottom {
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
}

/* ===== 服务详情页 ===== */
.page-hero {
  background: var(--bg-dark);
  padding: 80px 0 64px;
  position: relative;
  overflow: hidden;
}
.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}
.page-hero .container {
  position: relative;
  z-index: 2;
}
.page-hero h1 {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  color: var(--text-on-dark);
  margin-bottom: 16px;
}
.page-hero p {
  font-size: 18px;
  color: var(--text-on-dark-muted);
  max-width: 680px;
  line-height: 1.8;
}

.service-detail-section {
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
}
.service-detail-section:last-child { border-bottom: none; }
.service-detail-header {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 32px;
  margin-bottom: 32px;
  align-items: start;
}
.service-detail-num {
  font-family: var(--font-display);
  font-size: 56px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  opacity: 0.6;
}
.service-detail-header h2 {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
}
.service-detail-header p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
}
.service-detail-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 40px;
}
.deliverables h4, .process h4 {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.deliverables ul, .process ul {
  list-style: none;
}
.deliverables li, .process li {
  padding: 12px 0;
  font-size: 14.5px;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 14px;
  border-bottom: 1px solid #EDEAE4;
}
.deliverables li:last-child, .process li:last-child { border-bottom: none; }
.deliverables li::before {
  content: '';
  width: 8px; height: 8px;
  border: 1.5px solid var(--accent);
  margin-top: 6px;
  flex-shrink: 0;
}
.process li {
  counter-increment: step;
}
.process li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
  min-width: 28px;
}
.process { counter-reset: step; }

/* ===== 合作模式页 ===== */
.comparison-table-wrap {
  margin-top: 56px;
  overflow-x: auto;
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
}
.comparison-table th, .comparison-table td {
  padding: 20px 24px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 14.5px;
}
.comparison-table th {
  background: var(--bg-dark);
  color: var(--text-on-dark);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.5px;
}
.comparison-table th:first-child {
  background: #1A1A1A;
  width: 200px;
}
.comparison-table th.highlight {
  background: var(--accent-dark);
}
.comparison-table td:first-child {
  font-weight: 500;
  color: var(--text);
  background: #FAF8F4;
}
.comparison-table tr:hover td {
  background: #FDFBF7;
}
.comparison-table .check {
  color: var(--accent);
  font-weight: 700;
}
.comparison-table .partial {
  color: var(--text-muted);
}

.process-timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin-top: 56px;
  position: relative;
}
.process-timeline::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 10%; right: 10%;
  height: 1px;
  background: var(--border);
}
.timeline-step {
  text-align: center;
  position: relative;
  padding: 0 12px;
}
.timeline-step .step-dot {
  width: 56px; height: 56px;
  border: 1.5px solid var(--accent);
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  position: relative;
  z-index: 2;
}
.timeline-step h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}
.timeline-step p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== 案例页 ===== */
.case-filters {
  display: flex;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 10px 24px;
  font-size: 13.5px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  transition: all 0.2s;
  letter-spacing: 0.5px;
}
.filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.filter-btn.active {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.cases-full-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

/* ===== 智造实力页 ===== */
.manufacturing-hero-img {
  width: 100%;
  height: 420px;
  background-image: url('images/manufacturing-base.webp');
  background-size: cover;
  background-position: center;
  position: relative;
}
.manufacturing-hero-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(20,20,20,0.3) 0%, rgba(20,20,20,0.6) 100%);
}
.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
}
.capability-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 36px 28px;
  transition: all 0.3s;
}
.capability-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}
.capability-card .cap-icon {
  width: 52px; height: 52px;
  border: 1px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}
.capability-card .cap-icon svg {
  width: 26px; height: 26px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 1.5;
}
.capability-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}
.capability-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}
.cert-row {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 32px;
}
.cert-badge {
  padding: 12px 24px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

/* ===== 关于我们页 ===== */
.about-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-story-img {
  height: 480px;
  background-image: url('images/about-story.webp');
  background-size: cover;
  background-position: center;
  position: relative;
}
.about-story-img::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--accent);
  transform: translate(16px, 16px);
  pointer-events: none;
}
.about-story-text h2 {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 700;
  margin-bottom: 24px;
  line-height: 1.4;
}
.about-story-text p {
  font-size: 15.5px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 20px;
}
.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}
.value-card {
  text-align: center;
  padding: 40px 24px;
}
.value-card .value-num {
  font-family: var(--font-display);
  font-size: 48px;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 16px;
}
.value-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
}
.value-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ===== 申请表单页 ===== */
.apply-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}
.apply-info h2 {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.4;
}
.apply-info > p {
  font-size: 15.5px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
}
.contact-items {
  list-style: none;
}
.contact-items li {
  display: flex;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.contact-items .ci-icon {
  width: 44px; height: 44px;
  border: 1px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-items .ci-icon svg {
  width: 20px; height: 20px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 1.5;
}
.contact-items h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}
.contact-items p {
  font-size: 14px;
  color: var(--text-secondary);
}
.apply-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 48px 40px;
}
.form-group {
  margin-bottom: 24px;
}
.form-group label {
  display: block;
  font-size: 13.5px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text);
}
.form-group label .required {
  color: var(--accent);
  margin-left: 4px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  background: var(--bg);
  font-family: inherit;
  font-size: 14.5px;
  color: var(--text);
  transition: border-color 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group textarea {
  resize: vertical;
  min-height: 100px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.type-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.type-option {
  border: 1px solid var(--border);
  padding: 16px;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}
.type-option:hover {
  border-color: var(--accent);
}
.type-option.selected {
  border-color: var(--accent);
  background: rgba(168,132,90,0.06);
}
.type-option .to-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
}
.type-option .to-desc {
  font-size: 12px;
  color: var(--text-muted);
}
.apply-form .btn {
  width: 100%;
  justify-content: center;
  margin-top: 8px;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .pain-grid, .services-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid, .cases-full-grid, .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-stats-inner { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .process-timeline { grid-template-columns: repeat(3, 1fr); row-gap: 32px; }
  .process-timeline::before { display: none; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-mobile-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    position: absolute;
    top: var(--nav-height);
    left: 0; right: 0;
    background: var(--bg);
    flex-direction: column;
    padding: 24px 32px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
  }
  .hero-title { font-size: 36px; }
  .section-title { font-size: 30px; }
  .page-hero h1 { font-size: 34px; }
  .pain-grid, .services-grid, .cases-grid, .cases-full-grid,
  .capability-grid, .partnership-cards, .service-detail-body,
  .about-story, .apply-layout, .form-row, .type-options {
    grid-template-columns: 1fr;
  }
  .hero-stats-inner { grid-template-columns: 1fr 1fr; gap: 20px; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .process-timeline { grid-template-columns: 1fr 1fr; }
  .section { padding: 64px 0; }
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
  .service-detail-header { grid-template-columns: 1fr; gap: 16px; }
  .service-detail-num { font-size: 40px; }
  .values-grid { grid-template-columns: 1fr; }
  .about-story-img { height: 320px; }
  .apply-form { padding: 32px 24px; }
}


/* SEO and accessibility remediation */
.language-switch { position: relative; margin-left: 18px; white-space: nowrap; }
.language-switch details { position: relative; }
.language-switch summary { list-style: none; color: var(--text-secondary); font-size: 12px; letter-spacing: 1px; padding: 8px 10px; border: 1px solid var(--border); cursor: pointer; }
.language-switch summary::-webkit-details-marker { display: none; }
.language-switch summary::after { content: '⌄'; margin-left: 8px; color: var(--accent); }
.language-switch details[open] summary, .language-switch summary:hover { color: var(--accent-dark); border-color: var(--accent); }
.language-options { position: absolute; top: calc(100% + 8px); right: 0; min-width: 132px; padding: 8px; background: var(--bg-card); border: 1px solid var(--border); box-shadow: var(--shadow-md); z-index: 20; }
.language-options a, .language-options span { display: block; padding: 8px 10px; color: var(--text-secondary); font-size: 12px; line-height: 1.4; }
.language-options a:hover, .language-options span[aria-current="page"] { color: var(--text); background: rgba(168,132,90,0.08); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.hero-bg, .manufacturing-hero-img, .about-story-img { display: block; object-fit: cover; }
.hero-bg { width: 100%; height: 100%; }
.manufacturing-hero-img { object-position: center; }
.about-story-img { width: 100%; }
.case-card .case-img > img { width: 100%; height: 100%; object-fit: cover; }
.center-action { text-align: center; margin-top: 48px; }
.form-status { min-height: 1.5em; margin-top: 16px; font-size: 13px; color: var(--text-secondary); overflow-wrap: anywhere; }
.form-status.success { color: #2f6d45; }
.form-status.error { color: #9f2d2d; }
.contact-items p, .contact-items a, .page-hero p, .hero-desc { overflow-wrap: anywhere; word-break: break-word; }
.service-card, .case-card, .capability-card { text-decoration: none; }
@media (max-width: 768px) {
  body { overflow-x: hidden; }
  .nav-inner, .container, .hero-content { padding-left: 20px; padding-right: 20px; min-width: 0; }
  .nav-inner { justify-content: flex-start; gap: 12px; }
  .nav-logo { font-size: 18px; letter-spacing: 3px; min-width: 0; flex-shrink: 1; }
  .nav-cta { display: none; }
  .language-switch { margin-left: auto; flex: 0 0 auto; }
  .nav-mobile-toggle { padding: 8px 4px; }
  .nav-mobile-toggle { flex: 0 0 auto; }
  .hero-content, .hero-title, .hero-desc, .page-hero h1, .page-hero p { width: 100%; max-width: 100%; min-width: 0; }
  .hero-title { font-size: clamp(30px, 8vw, 36px); overflow-wrap: anywhere; word-break: normal; }
  .hero-desc, .page-hero p { font-size: 16px; line-height: 1.8; overflow-wrap: anywhere; word-break: normal; }
  .page-hero h1 { overflow-wrap: anywhere; word-break: normal; }
  .container > * { min-width: 0; }
  .contact-items li { min-width: 0; }
  .contact-items p { font-size: 13px; }
  .comparison-table-wrap { overflow-x: auto; }
  .comparison-table { min-width: 680px; }
  .case-card .case-img { height: 220px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

html[dir="rtl"] body {
  font-family: Tahoma, Arial, sans-serif;
}
html[dir="rtl"] .nav-inner {
  direction: rtl;
}
html[dir="rtl"] .nav-links,
html[dir="rtl"] .nav-cta,
html[dir="rtl"] .language-switch,
html[dir="rtl"] .nav-mobile-toggle {
  direction: rtl;
}
html[dir="rtl"] .language-switch {
  margin-left: 0;
  margin-right: 18px;
}
html[dir="rtl"] .language-options {
  left: 0;
  right: auto;
  text-align: right;
}
html[dir="rtl"] .language-switch summary::after {
  margin-left: 0;
  margin-right: 8px;
}
html[dir="rtl"] .section-label {
  flex-direction: row-reverse;
  justify-content: flex-end;
}
html[dir="rtl"] .partner-features li {
  flex-direction: row;
}
html[dir="rtl"] .case-card .case-tag {
  left: auto;
  right: 16px;
}
html[dir="rtl"] .comparison-table th,
html[dir="rtl"] .comparison-table td {
  text-align: right;
}
html[dir="rtl"] .form-group input,
html[dir="rtl"] .form-group select,
html[dir="rtl"] .form-group textarea {
  text-align: right;
}
html[dir="rtl"] .nav-links.open {
  direction: rtl;
}
html[dir="rtl"] .hero-content,
html[dir="rtl"] .hero-title,
html[dir="rtl"] .hero-desc,
html[dir="rtl"] .page-hero h1,
html[dir="rtl"] .page-hero p {
  text-align: right;
  overflow-wrap: anywhere;
  word-break: normal;
}