/* ===== 公共弹窗与悬浮组件样式（所有页面共用） ===== */

/* News Modal */
.news-modal {
  position: fixed; inset: 0; z-index: 2000;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity 0.4s ease;
}
.news-modal.open { opacity: 1; pointer-events: all; }
.news-modal-overlay {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(4px);
}
.news-modal-content {
  position: relative; background: var(--white);
  width: 90%; max-width: 780px; max-height: 85vh; overflow-y: auto;
  border-radius: var(--radius); z-index: 1;
  transform: translateY(20px); transition: transform 0.4s ease;
}
.news-modal.open .news-modal-content { transform: translateY(0); }
.news-modal-close {
  position: absolute; top: 20px; right: 20px;
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-alt); border-radius: 50%; z-index: 2;
  color: var(--text-primary); transition: background var(--transition);
}
.news-modal-close:hover { background: var(--border); }
.news-modal-img { width: 100%; height: 340px; background-size: cover; background-position: center; }
.news-modal-body { padding: 48px; }
.news-modal-body .overline { margin-bottom: 16px; }
.news-modal-body h2 { font-size: 32px; font-weight: 700; line-height: 1.3; margin-bottom: 24px; }
.news-modal-body .article-text { font-size: 16px; color: var(--text-secondary); line-height: 1.9; }
.news-modal-body .article-text p { margin-bottom: 20px; }

/* Info Modal */
.info-modal {
  position: fixed; inset: 0; z-index: 2500;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity 0.4s ease;
}
.info-modal.open { opacity: 1; pointer-events: all; }
.info-modal-overlay {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(4px);
}
.info-modal-content {
  position: relative; background: var(--white);
  width: 90%; max-width: 420px; border-radius: var(--radius); z-index: 1;
  transform: translateY(20px) scale(0.97);
  transition: transform 0.45s cubic-bezier(0.25,0.46,0.45,0.94);
  overflow: hidden; box-shadow: 0 24px 80px rgba(0,0,0,0.18);
}
.info-modal.open .info-modal-content { transform: translateY(0) scale(1); }
.info-modal-close {
  position: absolute; top: 16px; right: 16px;
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.06); border-radius: 50%; z-index: 2;
  color: var(--text-muted); transition: all var(--transition);
  cursor: pointer; padding: 0; border: none;
}
.info-modal-close:hover { background: rgba(0,0,0,0.12); color: var(--text-primary); }
.info-panel { display: none; padding: 48px 40px; }
.info-panel.active { display: block; }
.info-panel-header { text-align: center; margin-bottom: 32px; }
.info-panel-icon {
  width: 60px; height: 60px; background: var(--bg-alt); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px; color: var(--text-primary);
}
.info-panel-header h3 { font-size: 22px; font-weight: 700; margin-bottom: 6px; letter-spacing: -0.01em; }
.info-panel-header p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }
.wechat-qr-wrapper { display: flex; justify-content: center; margin-bottom: 24px; }
.wechat-qr {
  width: 192px; height: 192px; border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  display: flex; align-items: center; justify-content: center; background: var(--white);
}
.wechat-qr img, .wechat-qr svg { width: 100%; height: 100%; }
.wechat-id-row {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  padding: 12px 16px; background: var(--bg-alt); border-radius: var(--radius);
}
.wechat-id-label { font-size: 13px; color: var(--text-muted); flex-shrink: 0; }
.wechat-id-value {
  font-family: var(--font-en); font-size: 15px; font-weight: 600;
  color: var(--text-primary); user-select: all; letter-spacing: 0.01em;
}
.copy-btn {
  padding: 5px 14px; font-size: 12px; font-weight: 500; font-family: var(--font-cn);
  background: var(--text-primary); color: var(--white); border: none;
  border-radius: 100px; cursor: pointer; transition: all var(--transition); flex-shrink: 0;
}
.copy-btn:hover { background: var(--accent-hover); }
.copy-btn.copied { background: #22c55e; }
.info-contact-list { display: flex; flex-direction: column; gap: 16px; }
.info-contact-item {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 18px; background: var(--bg-alt); border-radius: var(--radius);
  transition: all var(--transition); text-decoration: none; color: inherit;
}
.info-contact-item:hover { background: var(--white); box-shadow: var(--shadow-sm); }
.info-contact-icon {
  width: 44px; height: 44px; background: var(--white); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; color: var(--text-primary);
}
.info-contact-text h4 { font-size: 12px; font-weight: 500; color: var(--text-muted); margin-bottom: 3px; }
.info-contact-text p { font-size: 15px; font-weight: 600; color: var(--text-primary); line-height: 1.3; }
.info-address-map {
  width: 100%; height: 200px;
  background: linear-gradient(135deg, #e8e8e8 0%, #d0d0d0 100%);
  border-radius: var(--radius); margin-bottom: 24px;
  position: relative; overflow: hidden;
}
.info-address-map iframe { width: 100%; height: 100%; border: 0; display: block; }
.info-address-card {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 20px; background: var(--bg-alt); border-radius: var(--radius);
}
.info-address-card .addr-icon {
  width: 44px; height: 44px; background: var(--white); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; color: var(--text-primary);
}
.info-address-card h4 { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.info-address-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }

/* 响应式 */
@media (max-width: 768px) {
  .info-panel { padding: 40px 24px; }
  .info-modal-content { max-width: 92%; }
  .wechat-qr { width: 160px; height: 160px; }
}

/* ===== 右侧悬浮工具栏 ===== */
.side-tools {
  position: fixed; right: 28px; top: 50%; transform: translateY(-50%);
  z-index: 950; display: flex; flex-direction: column; gap: 6px;
}
.side-tool-btn {
  width: 52px; height: 52px; background: var(--white); border: 1px solid var(--border);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: all var(--transition); color: var(--text-primary);
  position: relative; box-shadow: var(--shadow-sm); padding: 0;
}
.side-tool-btn:hover {
  background: var(--text-primary); color: var(--white); border-color: var(--text-primary);
  transform: scale(1.08); box-shadow: var(--shadow-md);
}
.side-tool-label {
  position: absolute; right: 62px; white-space: nowrap;
  background: var(--text-primary); color: var(--white);
  padding: 6px 14px; border-radius: var(--radius);
  font-size: 13px; font-weight: 500; opacity: 0; pointer-events: none;
  transform: translateX(8px); transition: all var(--transition); box-shadow: var(--shadow-sm);
}
.side-tool-label::after {
  content: ''; position: absolute; right: -6px; top: 50%; transform: translateY(-50%);
  width: 0; height: 0;
  border-top: 6px solid transparent; border-bottom: 6px solid transparent;
  border-left: 6px solid var(--text-primary);
}
.side-tool-btn:hover .side-tool-label { opacity: 1; transform: translateX(0); }

/* 移动端底部工具栏 */
.mobile-tools {
  display: none; position: fixed; bottom: 0; left: 0; right: 0;
  z-index: 950; background: var(--white);
  border-top: 1px solid var(--border); box-shadow: 0 -2px 20px rgba(0,0,0,0.06);
}
.mobile-tools-inner { display: grid; grid-template-columns: repeat(4, 1fr); height: 56px; }
.mobile-tool-btn {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; cursor: pointer; transition: all var(--transition);
  color: var(--text-secondary); padding: 0; font-size: 11px; font-weight: 500;
}
.mobile-tool-btn:hover { color: var(--text-primary); background: var(--bg-alt); }

@media (max-width: 768px) {
  .side-tools { display: none !important; }
  .mobile-tools { display: block; }
}

/* 防横向溢出：内容被撑宽时禁止页面出现横向滚动与右侧空白 */
html, body { overflow-x: hidden; }


/* ===== 公共基础样式（从 about.css 统一） ===== */
:root {
  --white: #ffffff;
  --bg: #ffffff;
  --bg-alt: #fafafa;
  --bg-dark: #0a0a0a;
  --text-primary: #0a0a0a;
  --text-secondary: #555555;
  --text-muted: #999999;
  --text-light: #cccccc;
  --border: #e5e5e5;
  --border-light: #dddddd;
  --accent: #2a2a2a;
  --overlay: rgba(0, 0, 0, 0.55);
  --font-en: 'Space Grotesk', sans-serif;
  --font-cn: 'Noto Sans SC', sans-serif;
  --font-display: 'DM Serif Display', serif;
  --container: 1200px;
  --nav-height: 72px;
  --section-pad: 140px;
  --grid-gap: 48px;
  --radius: 3px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --transition: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-cn); color: var(--text-primary); background: var(--bg);
  line-height: 1.7; font-weight: 400;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; }

/* Grain overlay */
body::before {
  content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 9999;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.025;
}

/* Layout */
.container { max-width: var(--container); margin: 0 auto; padding: 0 32px; }
.section { padding: var(--section-pad) 0; }
.section-alt { padding: var(--section-pad) 0; background: var(--bg-alt); }

/* Typography */
.section-label {
  font-family: var(--font-en); font-size: 13px; font-weight: 500;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--text-muted); margin-bottom: 12px;
}
.section-title {
  font-size: clamp(28px, 5vw, 42px); font-weight: 700;
  letter-spacing: -0.02em; line-height: 1.2; margin-bottom: 20px;
}
.section-desc {
  font-size: 17px; color: var(--text-secondary);
  line-height: 1.8; max-width: 560px;
}
.overline {
  font-family: var(--font-en); font-size: 11px; font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-muted);
}

/* Section Header */
.section-header { margin-bottom: 80px; }
.section-header.center { text-align: center; margin-bottom: 80px; }
.section-header.center .section-desc { margin: 0 auto; }
.section-header.center .section-label { margin-left: auto; margin-right: auto; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px;
  font-size: 14px; font-weight: 500; letter-spacing: 0.02em;
  border-radius: var(--radius); transition: all var(--transition); cursor: pointer;
}
.btn-primary { background: var(--text-primary); color: var(--white); }
.btn-primary:hover { background: var(--accent); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-outline { background: transparent; color: var(--text-primary); border: 1.5px solid var(--text-primary); }
.btn-outline:hover { background: var(--text-primary); color: var(--white); }
.btn-white { background: var(--white); color: var(--text-primary); }
.btn-white:hover { background: var(--bg-alt); transform: translateY(-1px); }
.btn-sm { padding: 10px 24px; font-size: 13px; }
.btn-icon { width: 20px; height: 20px; }

/* Navigation */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-height); z-index: 1000;
  transition: all var(--transition); background: transparent;
}
.nav.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
}
.nav.menu-open {
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
}
.nav.menu-open .nav-logo { color: var(--text-primary); }
.nav.menu-open .nav-logo .logo-mark { background: var(--text-primary); color: var(--white); }
.nav.menu-open .nav-menu-btn { color: var(--text-primary); }

.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 100%; max-width: var(--container); margin: 0 auto; padding: 0 32px;
}
.nav-logo {
  font-family: var(--font-en); font-size: 20px; font-weight: 700;
  letter-spacing: -0.02em; color: var(--white);
  transition: color var(--transition); display: flex; align-items: center; gap: 10px;
}
.nav-logo .logo-mark {
  width: 32px; height: 32px; background: var(--white); border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 700; color: var(--bg-dark);
  transition: background var(--transition), color var(--transition);
}
.nav.scrolled .nav-logo { color: var(--text-primary); }
.nav.scrolled .nav-logo .logo-mark { background: var(--text-primary); color: var(--white); }

.nav-links { display: flex; align-items: center; gap: 36px; }
.nav-links a {
  font-size: 14px; font-weight: 400; color: rgba(255,255,255,0.8);
  transition: color var(--transition); position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 1.5px; background: var(--white);
  transition: width var(--transition), background var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--white); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav.scrolled .nav-links a { color: var(--text-secondary); }
.nav.scrolled .nav-links a:hover, .nav.scrolled .nav-links a.active { color: var(--text-primary); }
.nav.scrolled .nav-links a::after { background: var(--text-primary); }

.nav-cta .btn { padding: 10px 24px; font-size: 13px; }
.nav-cta .btn-primary { background: var(--white); color: var(--text-primary); }
.nav-cta .btn-primary:hover { background: rgba(255,255,255,0.9); }
.nav.scrolled .nav-cta .btn-primary { background: var(--text-primary); color: var(--white); }

.nav-menu-btn { display: none; color: var(--white); transition: color var(--transition); }
.nav.scrolled .nav-menu-btn { color: var(--text-primary); }

/* Mobile Menu */
.mobile-menu {
  display: none; position: fixed; inset: 0; background: var(--white);
  z-index: 1100; flex-direction: column; align-items: center; justify-content: center; gap: 32px;
  opacity: 0; pointer-events: none; transition: opacity 0.4s ease;
}
.mobile-menu.open { opacity: 1; pointer-events: all; }
.mobile-menu a { font-size: 28px; font-weight: 500; color: var(--text-primary); }
.mobile-menu-close {
  position: absolute; top: 24px; right: 32px; color: var(--text-primary); z-index: 2;
}

/* Page Hero */
.page-hero {
  position: relative; height: 52vh; min-height: 380px; max-height: 560px;
  overflow: hidden; display: flex; align-items: flex-end;
}
.page-hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  transform: scale(1.08);
  animation: heroZoom 18s ease forwards;
}
@keyframes heroZoom { to { transform: scale(1); } }
.page-hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(10,10,10,0.72) 0%, rgba(10,10,10,0.38) 100%);
}
.page-hero-content {
  position: relative; z-index: 10;
  padding: 0 0 80px calc((100vw - var(--container)) / 2 + 32px);
  max-width: var(--container);
}
.hero-progress {
  position: absolute; bottom: 0; left: 0; height: 3px;
  background: rgba(255,255,255,0.6); width: 0; transition: width 0.3s ease;
}

/* Breadcrumb */
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--font-en); font-size: 13px; color: var(--text-secondary);
  letter-spacing: 0.05em; margin-bottom: 24px;
}
.breadcrumb a { position: relative; color: var(--text-secondary); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--text-secondary); }
.breadcrumb a::after {
  content: ''; position: absolute; bottom: -1px; left: 0;
  width: 0; height: 1px; background: var(--text-secondary);
  transition: width 0.3s ease;
}
.breadcrumb a:hover::after { width: 100%; }

/* ═══════════════════════════════════════
   Stats Bar
   ═══════════════════════════════════════ */
.stats-bar { padding: 80px 0; border-bottom: 1px solid var(--border); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.stat-item { text-align: center; padding: 0 32px; position: relative; }
.stat-item:not(:last-child)::after {
  content: ''; position: absolute; right: 0; top: 50%; transform: translateY(-50%);
  width: 1px; height: 48px; background: var(--border);
}
.stat-number {
  font-family: var(--font-en); font-size: 52px; font-weight: 700;
  letter-spacing: -0.03em; line-height: 1; margin-bottom: 12px; color: var(--text-primary);
}
.stat-number .suffix { font-size: 28px; font-weight: 400; color: var(--text-muted); }
.stat-label { font-size: 14px; color: var(--text-muted); font-weight: 400; }
.counter-wrap { position: relative; }
.counter-wrap::after {
  content: ''; position: absolute; bottom: -16px; left: 50%; transform: translateX(-50%);
  width: 32px; height: 2px; background: var(--border); border-radius: 2px;
}

/* ═══════════════════════════════════════
   Mission & Vision
   ═══════════════════════════════════════ */
.mission-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 32px;
}
.mission-card {
  background: var(--white);
  padding: 56px 48px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: all var(--transition);
  position: relative; overflow: hidden;
}
.mission-card:hover {
  border-color: var(--text-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.mission-card-icon {
  width: 56px; height: 56px; margin-bottom: 28px; color: var(--text-primary);
}
.mission-card h3 {
  font-size: clamp(20px, 3vw, 24px); font-weight: 700;
  margin-bottom: 16px; letter-spacing: -0.01em;
}
.mission-card p {
  font-size: 15px; color: var(--text-secondary); line-height: 1.8;
}

/* ═══════════════════════════════════════
   Development Timeline
   ═══════════════════════════════════════ */
.timeline-wrapper { position: relative; }
.timeline-line {
  position: absolute; left: 50%; top: 0; bottom: 0;
  width: 1px; background: var(--border); transform: translateX(-50%);
}
.timeline-list { display: flex; flex-direction: column; }
.timeline-item {
  position: relative; padding-bottom: 80px;
}
.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
  position: absolute; left: 50%; top: 0;
  width: 14px; height: 14px;
  background: var(--white); border: 3px solid var(--text-primary);
  border-radius: 50%; transform: translate(-50%, -4px);
  z-index: 2; transition: all 0.35s ease;
}
.timeline-item:hover .timeline-dot {
  background: var(--text-primary);
  box-shadow: 0 0 0 6px rgba(10,10,10,0.08);
}

.timeline-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 80px;
}

.timeline-content { padding: 0 56px; }
.timeline-content.align-right {
  text-align: right; padding-right: 56px; padding-left: 0;
}
.timeline-content.align-left {
  text-align: left; padding-left: 56px; padding-right: 0;
}
.timeline-spacer { /* empty cell for alternating layout */ }

.timeline-year {
  font-family: var(--font-en);
  font-size: clamp(32px, 5vw, 42px); font-weight: 700;
  letter-spacing: -0.03em; color: var(--border-light);
  margin-bottom: 8px; line-height: 1; transition: color var(--transition);
}
.timeline-item:hover .timeline-year { color: var(--text-muted); }
.timeline-content h3 { font-size: 20px; font-weight: 600; margin-bottom: 12px; }
.timeline-content p {
  font-size: 15px; color: var(--text-secondary); line-height: 1.8; max-width: 420px;
}
.timeline-content.align-right p { margin-left: auto; }

/* ═══════════════════════════════════════
   Why Choose Us
   ═══════════════════════════════════════ */
.why-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 48px;
}
.why-item { opacity: 1; }
.why-number {
  font-family: var(--font-en); font-size: clamp(48px, 7vw, 64px);
  font-weight: 700; letter-spacing: -0.04em; line-height: 1;
  color: var(--border); margin-bottom: 20px;
  transition: color 0.35s ease;
}
.why-item:hover .why-number { color: var(--text-primary); }
.why-line { width: 32px; height: 3px; background: var(--text-primary); margin-bottom: 24px; border-radius: 2px; }
.why-item h3 { font-size: 20px; font-weight: 600; color: var(--text-primary); margin-bottom: 14px; }
.why-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; }

/* ═══════════════════════════════════════
   Team Section
   ═══════════════════════════════════════ */
.team-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.team-card {
  background: var(--white); border-radius: var(--radius);
  overflow: hidden; border: 1px solid var(--border);
  transition: all var(--transition);
}
.team-card:hover {
  transform: translateY(-6px); box-shadow: 0 16px 48px rgba(0,0,0,0.1);
}
.team-avatar-wrap {
  position: relative; overflow: hidden; height: 260px;
  background-size: cover; background-position: center top;
}
.team-avatar-wrap::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(10,10,10,0.45) 0%, transparent 60%);
  opacity: 0; transition: opacity 0.35s ease;
}
.team-card:hover .team-avatar-wrap::after { opacity: 1; }
.team-socials {
  position: absolute; bottom: 16px; left: 0; right: 0;
  display: flex; justify-content: center; gap: 10px;
  opacity: 0; transform: translateY(12px);
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  z-index: 2;
}
.team-card:hover .team-socials { opacity: 1; transform: translateY(0); }
.team-social-btn {
  width: 32px; height: 32px; background: rgba(255,255,255,0.9);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  color: var(--text-primary);
}
.team-card-body { padding: 24px; }
.team-card-body h3 { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.team-card-body .team-role { font-size: 13px; color: var(--text-muted); margin-bottom: 8px; }
.team-card-body .team-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

/* ═══════════════════════════════════════
   Culture Section
   ═══════════════════════════════════════ */
.culture-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.culture-card {
  border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.culture-card:hover {
  border-color: var(--text-primary); transform: translateY(-4px); box-shadow: var(--shadow-md);
}
.culture-img-wrap { overflow: hidden; height: 240px; }
.culture-img {
  width: 100%; height: 100%; background-size: cover; background-position: center;
  transition: transform 0.6s ease;
}
.culture-card:hover .culture-img { transform: scale(1.04); }
.culture-body { padding: 28px; }
.culture-body h3 { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.culture-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ═══════════════════════════════════════
   Core Values
   ═══════════════════════════════════════ */
.values-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.value-card {
  position: relative; overflow: hidden;
  text-align: center; padding: 48px 28px;
  border: 1px solid var(--border); border-radius: var(--radius);
  transition: all var(--transition);
}
.value-card::before {
  content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 3px;
  background: var(--text-primary); transform: scaleX(0); transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.value-card:hover::before { transform: scaleX(1); }
.value-card:hover {
  border-color: var(--text-primary); transform: translateY(-4px); box-shadow: var(--shadow-sm);
}
.value-card-icon { width: 48px; height: 48px; margin: 0 auto 24px; color: var(--text-primary); }
.value-card h3 { font-size: 18px; font-weight: 600; margin-bottom: 12px; }
.value-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; }

/* ═══════════════════════════════════════
   Certifications
   ═══════════════════════════════════════ */
.certs-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.cert-card {
  background: var(--white); padding: 32px; border-radius: var(--radius);
  text-align: center; border: 1px solid var(--border);
  transition: all var(--transition);
}
.cert-card:hover {
  border-color: var(--text-primary); transform: translateY(-4px); box-shadow: var(--shadow-sm);
}
.cert-card-icon { width: 64px; height: 64px; margin: 0 auto 20px; color: var(--text-primary); }
.cert-card h3 { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.cert-card p { font-size: 12px; color: var(--text-muted); }

/* ═══════════════════════════════════════
   CTA Section
   ═══════════════════════════════════════ */
.cta-section { padding: 120px 0; text-align: center; }
.cta-section .section-title { margin-bottom: 24px; }
.cta-section .section-desc { margin: 0 auto 48px; text-align: center; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ═══════════════════════════════════════
   Footer
   ═══════════════════════════════════════ */
.footer { background: var(--bg-dark); color: var(--white); padding: 80px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 64px; margin-bottom: 64px; }
.footer-brand h3 { font-family: var(--font-en); font-size: 22px; font-weight: 700; margin-bottom: 16px; letter-spacing: -0.02em; }
.footer-brand p { font-size: 14px; color: rgba(255,255,255,0.5); line-height: 1.7; max-width: 320px; margin-bottom: 24px; }
.footer-col h4 { font-size: 14px; font-weight: 600; margin-bottom: 24px; letter-spacing: 0.02em; }
.footer-col ul li { margin-bottom: 14px; }
.footer-col ul li a { font-size: 14px; color: rgba(255,255,255,0.5); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1); padding: 24px 0;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 8px 16px;
}
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.35); white-space: nowrap; }
.footer-bottom-links { display: flex; gap: 24px; }
.footer-bottom-links a { font-size: 13px; color: rgba(255,255,255,0.35); transition: color var(--transition); }
.footer-bottom-links a:hover { color: rgba(255,255,255,0.7); }

/* Back to Top */
.back-to-top {
  position: fixed; bottom: 32px; right: 32px;
  width: 48px; height: 48px; background: var(--text-primary); color: var(--white);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  z-index: 100; opacity: 0; pointer-events: none;
  transform: translateY(12px); transition: all var(--transition); box-shadow: var(--shadow-md);
}
.back-to-top.visible { opacity: 1; pointer-events: all; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-2px); }

/* Side Tools */
.side-tools {
  position: fixed; right: 28px; top: 50%; transform: translateY(-50%);
  z-index: 950; display: flex; flex-direction: column; gap: 6px;
}
.side-tool-btn {
  width: 52px; height: 52px; background: var(--white); border: 1px solid var(--border);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: all var(--transition); color: var(--text-primary);
  position: relative; box-shadow: var(--shadow-sm); padding: 0;
}
.side-tool-btn:hover {
  background: var(--text-primary); color: var(--white); border-color: var(--text-primary);
  transform: scale(1.08); box-shadow: var(--shadow-md);
}
.side-tool-label {
  position: absolute; right: 62px; white-space: nowrap;
  background: var(--text-primary); color: var(--white);
  padding: 6px 14px; border-radius: var(--radius);
  font-size: 13px; font-weight: 500; opacity: 0; pointer-events: none;
  transform: translateX(8px); transition: all var(--transition); box-shadow: var(--shadow-sm);
}
.side-tool-label::after {
  content: ''; position: absolute; right: -6px; top: 50%; transform: translateY(-50%);
  width: 0; height: 0;
  border-top: 6px solid transparent; border-bottom: 6px solid transparent;
  border-left: 6px solid var(--text-primary);
}
.side-tool-btn:hover .side-tool-label { opacity: 1; transform: translateX(0); }

/* Mobile Bottom Tools */
.mobile-tools {
  display: none; position: fixed; bottom: 0; left: 0; right: 0;
  z-index: 950; background: var(--white);
  border-top: 1px solid var(--border); box-shadow: 0 -2px 20px rgba(0,0,0,0.06);
}
.mobile-tools-inner { display: grid; grid-template-columns: repeat(4, 1fr); height: 56px; }
.mobile-tool-btn {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; cursor: pointer; transition: all var(--transition);
  color: var(--text-secondary); padding: 0; font-size: 11px; font-weight: 500;
}
.mobile-tool-btn:hover { color: var(--text-primary); background: var(--bg-alt); }

/* Quote Modal */
.quote-modal {
  position: fixed; inset: 0; z-index: 3000;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity 0.4s ease;
}
.quote-modal.open { opacity: 1; pointer-events: all; }
.quote-modal-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(4px); }
.quote-modal-content {
  position: relative; background: var(--white); width: 92%; max-width: 860px; max-height: 90vh;
  overflow-y: auto; border-radius: var(--radius); z-index: 1;
  transform: translateY(30px) scale(0.97);
  transition: transform 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  box-shadow: 0 24px 80px rgba(0,0,0,0.18);
}
.quote-modal.open .quote-modal-content { transform: translateY(0) scale(1); }
.quote-modal-inner { display: grid; grid-template-columns: 1fr 1fr; min-height: 460px; }
.quote-modal-left {
  background: var(--bg-dark); color: var(--white); padding: 52px 44px;
  display: flex; flex-direction: column; justify-content: space-between;
}
.quote-modal-left .overline { color: rgba(255,255,255,0.45); margin-bottom: 24px; }
.quote-modal-left h2 { font-size: 30px; font-weight: 700; line-height: 1.25; letter-spacing: -0.02em; margin-bottom: 20px; }
.quote-modal-left > p { font-size: 15px; color: rgba(255,255,255,0.6); line-height: 1.8; margin-bottom: 40px; }
.quote-modal-contact-info { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 28px; }
.quote-modal-contact-item { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.quote-modal-contact-item:last-child { margin-bottom: 0; }
.quote-modal-contact-icon {
  width: 36px; height: 36px; border: 1px solid rgba(255,255,255,0.15); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0; color: rgba(255,255,255,0.7);
}
.quote-modal-contact-item span { font-size: 15px; color: rgba(255,255,255,0.85); }
.quote-modal-right { padding: 52px 44px; display: flex; flex-direction: column; justify-content: center; }
.quote-modal-right h3 { font-size: 22px; font-weight: 700; margin-bottom: 8px; letter-spacing: -0.01em; }
.quote-modal-right > p { font-size: 14px; color: var(--text-muted); margin-bottom: 32px; }
.quote-modal-form .form-group { margin-bottom: 20px; }
.quote-modal-form .form-group label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 8px; color: var(--text-primary); }
.quote-modal-form .form-group input, .quote-modal-form .form-group textarea {
  width: 100%; padding: 14px 16px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--white); color: var(--text-primary); font-size: 15px;
  transition: border-color var(--transition); outline: none;
}
.quote-modal-form .form-group input:focus, .quote-modal-form .form-group textarea:focus { border-color: var(--text-primary); }
.quote-modal-form .form-group textarea { resize: vertical; min-height: 64px; }
.quote-modal-form .form-group .error-msg { font-size: 12px; color: #e53e3e; margin-top: 6px; display: none; }
.quote-modal-form .btn { width: 100%; justify-content: center; margin-top: 4px; }
.quote-modal-close {
  position: absolute; top: 20px; right: 20px; width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,0.06); border-radius: 50%; z-index: 2;
  color: var(--text-muted); transition: all var(--transition); cursor: pointer;
}
.quote-modal-close:hover { background: rgba(0,0,0,0.12); color: var(--text-primary); }
.quote-modal-success { display: none; text-align: center; padding: 60px 44px; }
.quote-modal-success.show {
  display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 460px;
}
.quote-modal-success .success-icon { width: 72px; height: 72px; margin-bottom: 24px; color: #22c55e; }
.quote-modal-success h3 { font-size: 24px; font-weight: 700; margin-bottom: 10px; }
.quote-modal-success p { font-size: 15px; color: var(--text-secondary); line-height: 1.7; }

/* Scroll Animations */
.reveal { opacity: 0; transform: translateY(32px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-left { opacity: 0; transform: translateX(-32px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal-left.visible { opacity: 1; transform: translateX(0); }
.reveal-right { opacity: 0; transform: translateX(32px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal-right.visible { opacity: 1; transform: translateX(0); }
.stagger-children > * { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.stagger-children.visible > *:nth-child(1) { transition-delay: 0s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.08s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.16s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.24s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.32s; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.4s; opacity: 1; transform: translateY(0); }

/* ═══════════════════════════════════════
   Responsive
   ═══════════════════════════════════════ */
@media (max-width: 1024px) {
  :root { --section-pad: 100px; --grid-gap: 32px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .stat-item:not(:last-child)::after { display: none; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .certs-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }

  /* Timeline mobile */
  .timeline-line { display: none; }
  .timeline-dot { display: none; }
  .timeline-row { grid-template-columns: 1fr; gap: 0; }
  .timeline-spacer { display: none; }
  .timeline-content,
  .timeline-content.align-right,
  .timeline-content.align-left {
    text-align: left; padding: 0;
  }
  .timeline-content.align-right p { margin-left: 0; }
  .timeline-item {
    padding-bottom: 56px; padding-left: 28px;
    border-left: 2px solid var(--border);
  }
  .timeline-item:last-child { padding-bottom: 0; }
  .timeline-item::before {
    content: ''; position: absolute; left: -7px; top: 8px;
    width: 12px; height: 12px; background: var(--white);
    border: 2px solid var(--text-primary); border-radius: 50%;
  }
  .timeline-year { font-size: 32px; margin-bottom: 6px; }
}

@media (max-width: 768px) {
  :root { --section-pad: 80px; --nav-height: 60px; }
  .nav-links, .nav-cta { display: none; }
  .nav-menu-btn { display: flex; }
  .mobile-menu { display: flex; }

  .page-hero { height: 42vh; min-height: 300px; }
  .page-hero-content { padding: 0 32px 48px; }
  .page-hero-content h1 { font-size: 36px; }
  .page-hero-content p { font-size: 15px; }

  .stats-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .stat-number { font-size: 40px; }

  .mission-grid { grid-template-columns: 1fr; gap: 24px; }
  .mission-card { padding: 40px 28px; }

  .values-grid { grid-template-columns: 1fr; }
  .certs-grid { grid-template-columns: 1fr; }
  .culture-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .why-grid { grid-template-columns: 1fr 1fr; gap: 32px 24px; }

  .side-tools { display: none !important; }
  .mobile-tools { display: block; }
  .back-to-top { bottom: 76px; right: 20px; }

  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer { padding-bottom: 76px !important; } /* 为底部 Mobile Tools 预留空间 */
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .footer-bottom p {
    white-space: normal;
    display: inline-flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 4px 8px;
    line-height: 1.7;
  }
  .footer-bottom-links { justify-content: center; }

  .quote-modal-inner { grid-template-columns: 1fr; }
  .quote-modal-left { padding: 40px 32px 32px; }
  .quote-modal-left > p { margin-bottom: 24px; }
  .quote-modal-right { padding: 32px; }
}

@media (max-width: 480px) {
  .container { padding: 0 20px; }
  .page-hero { min-height: 260px; }
  .page-hero-content h1 { font-size: 30px; }
  .stat-number { font-size: 36px; }
  .team-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .why-number { font-size: 40px; }
  .quote-modal-left { padding: 32px 24px 24px; }
  .quote-modal-right { padding: 24px; }
  .quote-modal-left h2 { font-size: 24px; }
}