/* ============================================
   优恩特科技 — 企业官网样式表
   ============================================ */

/* ========== Variables ========== */
:root {
  --color-primary:       #0a2a4a;
  --color-primary-dark:  #061b30;
  --color-primary-light: #1a3f6a;
  --color-accent:        #00b4d8;
  --color-accent-hover:  #0098b8;
  --color-accent-light:  #e6f7fb;
  --color-text:          #333;
  --color-text-light:    #666;
  --color-text-muted:    #999;
  --color-bg:            #fff;
  --color-bg-alt:        #f5f8fc;
  --color-bg-dark:       #0a2a4a;
  --color-border:        #e8ecf0;

  --font-sans: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;

  --text-sm:   14px;
  --text-base: 16px;
  --text-lg:   18px;
  --text-xl:   24px;
  --text-2xl:  32px;
  --text-3xl:  40px;
  --text-4xl:  52px;

  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;

  --max-width: 1200px;
  --header-height: 72px;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  --transition: 0.3s ease;
  --shadow-card: 0 4px 20px rgba(10,42,74,0.08);
  --shadow-hover: 0 12px 40px rgba(10,42,74,0.12);
}

/* ========== Reset ========== */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: color var(--transition); }
ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; font-family: inherit; }
input { font-family: inherit; }

/* ========== Container ========== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ========== Section ========== */
.section {
  padding: var(--space-20) 0;
}
.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}
.section-header h2 {
  font-size: var(--text-3xl);
  font-weight: 900;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  letter-spacing: -0.5px;
}
.section-header p {
  font-size: var(--text-lg);
  color: var(--color-text-light);
  max-width: 560px;
  margin: 0 auto;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 14px 32px;
  font-size: var(--text-base);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  border: 2px solid transparent;
  text-align: center;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,180,216,0.3);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.6);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
}
.btn-lg { padding: 18px 44px; font-size: var(--text-lg); }

/* ========== Reveal ========== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ============================================
   HEADER
   ============================================ */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}
.logo-img {
  height: 42px;
  width: auto;
  display: block;
  mix-blend-mode: multiply;
}
.logo-text {
  font-size: var(--text-xl);
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: 1px;
}

/* Navigation */
.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-link {
  display: block;
  padding: 10px 18px;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  white-space: nowrap;
}
.nav-link:hover { color: var(--color-accent); }
.nav-link.active { color: var(--color-accent); font-weight: 700; }
.nav-arrow { font-size: 10px; margin-left: 4px; }

/* Dropdown Submenu */
.nav-item-has-child { position: relative; }
.nav-sub {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: #fff;
  min-width: 160px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-hover);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 100;
}
.nav-sub::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 6px solid #fff;
}
.nav-item-has-child:hover .nav-sub {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.nav-sub li a {
  display: block;
  padding: 10px 16px;
  font-size: var(--text-sm);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.nav-sub li a:hover {
  background: var(--color-accent-light);
  color: var(--color-accent);
  padding-left: 22px;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.search-btn {
  width: 40px;
  height: 40px;
  border: none;
  background: var(--color-bg-alt);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-base);
  color: var(--color-text);
  transition: all var(--transition);
}
.search-btn:hover { background: var(--color-accent-light); color: var(--color-accent); }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: var(--space-2);
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  transition: all var(--transition);
  border-radius: 2px;
}
.menu-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* Search Overlay */
.search-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(10,42,74,0.95);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
  z-index: 2000;
}
.search-overlay.open { opacity: 1; visibility: visible; }
.search-overlay-inner {
  width: 100%;
  max-width: 600px;
  padding: var(--space-6);
  position: relative;
}
.search-form {
  display: flex;
  gap: var(--space-3);
}
.search-input {
  flex: 1;
  padding: 16px 24px;
  font-size: var(--text-lg);
  border: none;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.1);
  color: #fff;
  outline: 2px solid transparent;
  transition: all var(--transition);
}
.search-input::placeholder { color: rgba(255,255,255,0.4); }
.search-input:focus { outline-color: var(--color-accent); background: rgba(255,255,255,0.15); }
.search-submit {
  padding: 16px 28px;
  border: none;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: var(--text-lg);
  transition: background var(--transition);
}
.search-submit:hover { background: var(--color-accent-hover); }
.search-close {
  position: absolute;
  top: -60px;
  right: var(--space-6);
  background: none;
  border: none;
  color: rgba(255,255,255,0.6);
  font-size: 32px;
  transition: color var(--transition);
}
.search-close:hover { color: #fff; }

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, #0d3555 50%, var(--color-primary-dark) 100%);
  position: relative;
  overflow: hidden;
  margin-top: var(--header-height);
}
.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.hero-particle {
  position: absolute;
  border-radius: 50%;
  opacity: 0.05;
}
.hero-particle-1 {
  width: 600px; height: 600px;
  background: var(--color-accent);
  top: -10%; right: -10%;
  animation: heroFloat 12s ease-in-out infinite;
}
.hero-particle-2 {
  width: 400px; height: 400px;
  background: var(--color-accent);
  bottom: -5%; left: -5%;
  animation: heroFloat 15s ease-in-out infinite reverse;
}
.hero-particle-3 {
  width: 200px; height: 200px;
  background: #fff;
  top: 30%; left: 40%;
  animation: heroFloat 10s ease-in-out infinite;
}
.hero-particle-4 {
  width: 100px; height: 100px;
  border: 1px solid rgba(0,180,216,0.2);
  background: transparent;
  top: 60%; right: 20%;
  animation: heroFloat 8s ease-in-out infinite reverse;
}
@keyframes heroFloat {
  0%,100% { transform: translate(0,0) scale(1); }
  33% { transform: translate(30px,-30px) scale(1.05); }
  66% { transform: translate(-20px,20px) scale(0.95); }
}

.hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-10);
  width: 100%;
  position: relative;
  z-index: 2;
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
}
.hero-content { flex: 1; max-width: 600px; }
.hero-tag {
  display: inline-block;
  padding: 6px 18px;
  background: rgba(0,180,216,0.15);
  color: var(--color-accent);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: 20px;
  margin-bottom: var(--space-5);
  letter-spacing: 2px;
  animation: fadeUp 0.8s ease forwards;
}
.hero-title {
  font-size: var(--text-4xl);
  font-weight: 900;
  color: #fff;
  line-height: 1.15;
  margin-bottom: var(--space-5);
  animation: fadeUp 0.8s ease 0.2s forwards;
  opacity: 0;
}
.hero-desc {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
  margin-bottom: var(--space-8);
  animation: fadeUp 0.8s ease 0.4s forwards;
  opacity: 0;
}
.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  animation: fadeUp 0.8s ease 0.6s forwards;
  opacity: 0;
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Hero Visual - Code Snippet */
.hero-visual {
  flex: 0 0 360px;
  animation: fadeUp 0.8s ease 0.3s forwards;
  opacity: 0;
}
.hero-code-snippet {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  font-family: 'Consolas', 'Courier New', monospace;
  backdrop-filter: blur(4px);
}
.code-line {
  font-size: 14px;
  color: rgba(255,255,255,0.4);
  line-height: 2;
}
.code-line-1 { color: rgba(0,180,216,0.6); }
.code-line-2 { color: rgba(255,255,255,0.6); padding-left: 20px; }
.code-line-3 { color: rgba(0,180,216,0.4); padding-left: 20px; }
.code-line-4 { color: rgba(0,180,216,0.6); padding-left: 20px; }
.code-line-5 { color: rgba(255,255,255,0.5); padding-left: 40px; }
.code-line-6 { color: rgba(0,180,216,0.4); padding-left: 20px; }
.code-line-7 { color: rgba(0,180,216,0.6); }
.code-cursor {
  display: inline-block;
  width: 2px;
  height: 18px;
  background: var(--color-accent);
  animation: blink 1s step-end infinite;
  vertical-align: text-bottom;
  margin-left: 2px;
}
@keyframes blink {
  50% { opacity: 0; }
}

/* ============================================
   解决方案
   ============================================ */
.section-solution { background: var(--color-bg); }
.solution-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}
.solution-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-10) var(--space-8);
  text-align: center;
  transition: all var(--transition);
}
.solution-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}
.solution-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--space-6);
  background: var(--color-accent-light);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  color: var(--color-accent);
  transition: all var(--transition);
}
.solution-card:hover .solution-icon {
  background: var(--color-accent);
  color: #fff;
  transform: scale(1.1) rotate(-5deg);
}
.solution-card h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}
.solution-card p {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ============================================
   程序定制开发
   ============================================ */
.section-custom {
  background: var(--color-bg-alt);
}
.custom-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}
.custom-badge {
  display: inline-block;
  padding: 4px 16px;
  background: var(--color-accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  border-radius: 20px;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: var(--space-5);
}
.custom-title {
  font-size: var(--text-3xl);
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: var(--space-5);
}
.custom-desc {
  font-size: var(--text-base);
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: var(--space-6);
}
.custom-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}
.custom-list li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-base);
  color: var(--color-text);
}
.custom-list li i { color: var(--color-accent); font-size: var(--text-lg); }

.custom-visual-grid {
  position: relative;
  width: 100%;
  padding-bottom: 80%;
}
.custom-visual-box {
  position: absolute;
  border-radius: var(--radius-xl);
  transition: all var(--transition);
}
.custom-visual-box:hover { transform: scale(1.05); z-index: 10; }

/* ============================================
   明星产品
   ============================================ */
.section-products { background: var(--color-bg); }
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
}
.product-card {
  background: var(--color-bg);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.product-img {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 56px;
  color: rgba(255,255,255,0.7);
  transition: transform var(--transition);
}
.product-card:hover .product-img { transform: scale(1.05); }
.product-body { padding: var(--space-6); }
.product-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.product-desc {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}
.product-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  transition: all var(--transition);
}
.product-link i { transition: transform var(--transition); }
.product-link:hover i { transform: translateX(4px); }

/* ============================================
   专属定制 CTA
   ============================================ */
.section-cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  position: relative;
  overflow: hidden;
}
.cta-inner {
  position: relative;
  z-index: 2;
}
.cta-content {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.cta-title {
  font-size: var(--text-3xl);
  font-weight: 900;
  color: #fff;
  margin-bottom: var(--space-5);
}
.cta-desc {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
  margin-bottom: var(--space-8);
}
.cta-features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}
.cta-feature {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: rgba(255,255,255,0.8);
  font-size: var(--text-sm);
}
.cta-feature i { color: var(--color-accent); font-size: var(--text-lg); }

/* Background Shapes */
.cta-bg-shapes {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.cta-shape {
  position: absolute;
  border-radius: 50%;
}
.cta-shape-1 {
  width: 500px; height: 500px;
  border: 1px solid rgba(0,180,216,0.08);
  top: -20%; right: -10%;
  animation: heroFloat 15s ease-in-out infinite;
}
.cta-shape-2 {
  width: 300px; height: 300px;
  border: 1px solid rgba(0,180,216,0.06);
  bottom: -10%; left: -5%;
  animation: heroFloat 12s ease-in-out infinite reverse;
}
.cta-shape-3 {
  width: 150px; height: 150px;
  background: rgba(0,180,216,0.05);
  top: 50%; left: 50%;
  animation: heroFloat 10s ease-in-out infinite;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.8);
}

/* Contact Bar */
.footer-contact-bar {
  padding: var(--space-10) 0;
}
.footer-contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr auto;
  gap: var(--space-8);
  align-items: center;
}
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.footer-contact-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(0,180,216,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-lg);
  color: var(--color-accent);
  flex-shrink: 0;
}
.footer-contact-label {
  font-size: 12px;
  color: rgba(255,255,255,0.4);
  margin-bottom: 2px;
}
.footer-contact-value {
  font-size: var(--text-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.85);
}
.footer-contact-value a { color: inherit; }
.footer-contact-value a:hover { color: var(--color-accent); }
.footer-contact-action .btn { white-space: nowrap; }

/* Client Icons */
.footer-clients {
  padding: var(--space-10) 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}
.footer-clients-title {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  letter-spacing: 2px;
}
.footer-clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  align-items: center;
  gap: var(--space-8) var(--space-10);
  max-width: 800px;
  margin: 0 auto;
}
@media (max-width: 1023px) {
  .footer-clients-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-6) var(--space-8); }
}
@media (max-width: 767px) {
  .footer-clients-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-5) var(--space-6); }
  .client-logo { max-height: 30px; }
}
.client-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.client-logo {
  max-height: 36px;
  width: auto;
}

/* Copyright */
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) 0;
  background: var(--color-bg);
}
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.footer-bottom-links {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.footer-bottom-links a { color: var(--color-text-muted); transition: color var(--transition); }
.footer-bottom-links a:hover { color: var(--color-accent); }
.footer-dot { color: var(--color-border); }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1023px) {
  .hero-inner { flex-direction: column; text-align: center; padding-top: var(--space-16); padding-bottom: var(--space-10); }
  .hero-content { max-width: 100%; }
  .hero-actions { justify-content: center; }
  .hero-visual { display: none; }
  .hero-title { font-size: var(--text-3xl); }
  .hero-desc { font-size: var(--text-base); }
  .hero { min-height: auto; }

  .solution-grid { grid-template-columns: repeat(2, 1fr); }
  .custom-grid { grid-template-columns: 1fr; gap: var(--space-10); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-contact-grid { grid-template-columns: 1fr 1fr; }

  .nav { display: none; }
  .nav.open {
    display: block;
    position: fixed;
    top: var(--header-height);
    left: 0; right: 0;
    background: #fff;
    padding: var(--space-6);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    z-index: 999;
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
  }
  .nav-list { flex-direction: column; gap: 0; }
  .nav-link { padding: 14px 0; font-size: var(--text-base); border-bottom: 1px solid var(--color-border); }
  .nav-sub {
    position: static;
    transform: none;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    padding: 0 0 0 var(--space-5);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .nav-sub::before { display: none; }
  .nav-item-has-child:hover .nav-sub { max-height: 500px; transform: none; }
  .menu-toggle { display: flex; }
}

@media (max-width: 767px) {
  .section { padding: var(--space-16) 0; }
  .section-header h2 { font-size: var(--text-2xl); }
  .solution-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: var(--text-2xl); }
  .hero-desc br { display: none; }

  .footer-contact-grid { grid-template-columns: 1fr; text-align: center; }
  .footer-contact-item { flex-direction: column; text-align: center; }
  .footer-contact-action { justify-content: center; display: flex; }
  .footer-bottom-inner { flex-direction: column; gap: var(--space-3); text-align: center; }

  .cta-features { flex-direction: column; align-items: center; }
}

/* ============================================
   SUB-PAGES
   ============================================ */
.page-header {
  padding: 140px 0 var(--space-16);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  position: relative;
  overflow: hidden;
}
.page-header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0; right: 0;
  height: 40px;
  background: linear-gradient(to top right, #f5f8fc 49%, transparent 51%);
}
.page-header h1 {
  font-size: var(--text-3xl);
  font-weight: 900;
  color: #fff;
  margin-bottom: var(--space-3);
}
.page-header p {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.6);
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.5);
  margin-bottom: var(--space-5);
}
.breadcrumb a { color: rgba(255,255,255,0.5); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb .current { color: var(--color-accent); }

/* Sub-page content */
.page-content {
  padding: var(--space-16) 0;
}
.page-content h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}
.page-content h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  margin-top: var(--space-8);
}
.page-content p {
  font-size: var(--text-base);
  color: var(--color-text-light);
  line-height: 1.9;
  margin-bottom: var(--space-4);
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: var(--space-10);
}
.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-primary));
}
.timeline-item {
  position: relative;
  margin-bottom: var(--space-10);
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-10) + 5px);
  top: 4px;
  width: 16px;
  height: 16px;
  background: var(--color-accent);
  border-radius: 50%;
  border: 3px solid var(--color-bg-alt);
  z-index: 1;
}
.timeline-year {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}
.timeline-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}
.timeline-desc {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: 1.7;
}

/* Values / Culture cards */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-8);
}
.value-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  text-align: center;
  transition: all var(--transition);
}
.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.value-card .value-icon {
  width: 44px; height: 44px;
  margin: 0 auto var(--space-3);
  background: var(--color-accent-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-lg);
  color: var(--color-accent);
}
.value-card h4 {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}
.value-card p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ========== Mission Layout (图文并排) ========== */
.mission-layout {
  display: flex;
  align-items: flex-start;
  gap: var(--space-8);
  margin-top: var(--space-6);
}
.mission-text {
  flex: 1;
}
.mission-image {
  flex: 0 0 360px;
}
.mission-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

@media (max-width: 767px) {
  .mission-layout {
    flex-direction: column;
  }
  .mission-image {
    flex: 0 0 auto;
    width: 100%;
  }
}

/* ========== Project Meta ========== */
.project-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-8);
  margin-bottom: var(--space-10);
}
.meta-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-2);
}
.meta-item i {
  font-size: var(--text-xl);
  color: var(--color-accent);
}
.meta-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.meta-value {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-primary);
}
.meta-status {
  display: inline-block;
  padding: 2px 12px;
  border-radius: 20px;
  font-size: var(--text-sm);
  font-weight: 600;
  background: #e8f5e9;
  color: #2e7d32;
}

/* ========== Feature Grid ========== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}
.feature-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--transition);
}
.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}
.feature-card .feature-icon {
  width: 48px; height: 48px;
  background: var(--color-accent-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-lg);
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}
.feature-card h3 {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
  margin-top: 0;
}
.feature-card p {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ========== Tech Stack ========== */
.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-10);
}
.tech-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  font-size: var(--text-sm);
  color: var(--color-primary);
  transition: all var(--transition);
}
.tech-tag:hover {
  background: var(--color-accent-light);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ========== Process Steps ========== */
.process-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}
.process-step {
  display: flex;
  gap: var(--space-6);
  padding: var(--space-5) var(--space-6);
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-accent);
  transition: all var(--transition);
}
.process-step:hover {
  background: var(--color-bg);
  box-shadow: var(--shadow-card);
}
.process-step .step-num {
  font-size: var(--text-2xl);
  font-weight: 900;
  color: var(--color-accent);
  line-height: 1;
  min-width: 48px;
  opacity: 0.6;
}
.process-step .step-content h3 {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
  margin-top: 0;
}
.process-step .step-content p {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 0;
}

/* Contact form */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}
.contact-form label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-family: inherit;
  transition: border var(--transition);
  margin-bottom: var(--space-5);
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0,180,216,0.1);
}
.contact-form textarea { min-height: 140px; resize: vertical; }

/* Map Visual */
.map-visual {
  position: relative;
  width: 100%;
  height: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.map-visual-bg {
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 50% 55%, rgba(0,180,216,0.08) 0%, transparent 60%),
    linear-gradient(135deg, #e8edf4 0%, #f0f4f9 30%, #e4ecf5 60%, #dce6f0 100%);
  position: relative;
}
.map-visual-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(0,180,216,0.06) 39px, rgba(0,180,216,0.06) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(0,180,216,0.06) 39px, rgba(0,180,216,0.06) 40px);
}
.map-visual-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 200px 120px at 30% 60%, rgba(0,180,216,0.04) 0%, transparent 100%),
    radial-gradient(ellipse 150px 80px at 70% 40%, rgba(10,42,74,0.03) 0%, transparent 100%);
}
.map-visal-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 2;
}
.map-pin {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 24px;
  box-shadow: 0 4px 20px rgba(0,180,216,0.4);
  margin-bottom: var(--space-5);
  animation: mapPinBounce 2s ease-in-out infinite;
}
@keyframes mapPinBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.map-address {
  text-align: center;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  padding: var(--space-5) var(--space-8);
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 24px rgba(10,42,74,0.1);
  max-width: 460px;
}
.map-address strong {
  display: block;
  font-size: var(--text-lg);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}
.map-address span {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: 1.6;
}

/* Jobs / Recruitment */
.job-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-8);
  margin-bottom: var(--space-5);
  transition: all var(--transition);
}
.job-card:hover {
  box-shadow: var(--shadow-card);
  border-color: var(--color-accent);
}
.job-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-6);
}
.job-info h4 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}
.job-meta {
  display: flex;
  gap: var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.job-meta i { margin-right: var(--space-1); color: var(--color-accent); }
.job-action .btn { padding: 10px 28px; font-size: var(--text-sm); }
.job-requirements {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}
.job-requirements h5 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.job-requirements ul {
  list-style: disc;
  padding-left: var(--space-5);
}
.job-requirements li {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: var(--space-1);
}

/* ========== Project Gallery ========== */
.project-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}
.gallery-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}
.gallery-item:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}
.gallery-item img {
  width: 100%;
  height: auto;
  max-height: 360px;
  object-fit: contain;
  display: block;
  background: var(--color-bg-alt);
  padding: var(--space-4);
}
.gallery-caption {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-light);
  text-align: center;
  background: var(--color-bg-alt);
  margin: 0;
}
.gallery-single {
  grid-template-columns: minmax(300px, 500px);
  justify-content: center;
}
@media (max-width: 767px) {
  .project-gallery { grid-template-columns: 1fr; }
  .gallery-item img { max-height: 280px; }
}

/* News detail */
.news-list-item {
  display: flex;
  gap: var(--space-6);
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition);
}
.news-list-item:hover { padding-left: var(--space-3); }
.news-list-date {
  min-width: 80px;
  text-align: center;
}
.news-list-day {
  font-size: var(--text-2xl);
  font-weight: 900;
  color: var(--color-accent);
  line-height: 1;
}
.news-list-month {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.news-list-body h4 {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  transition: color var(--transition);
}
.news-list-item:hover h4 { color: var(--color-accent); }
.news-list-body p {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  line-height: 1.6;
}

@media (max-width: 1023px) {
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .job-card-header { flex-direction: column; text-align: center; }
  .job-meta { justify-content: center; flex-wrap: wrap; }
}
@media (max-width: 767px) {
  .values-grid { grid-template-columns: 1fr; }
}