/* 婺江建设 · 主题三「科技蓝」 */
:root {
  --tech-blue: #0A58CA;
  --glow-blue: #3E8BFF;
  --dark-bg: #0B1120;
  --concrete-gray: #1E293B;
  --light-bg: #F8FAFC;
  --text-main: #334155;
  --text-light: #94A3B8;
  --max-width: 1440px;
  --header-h: 90px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  color: var(--text-main);
  background: #fff;
  overflow-x: hidden;
  line-height: 1.7;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font: inherit; background: none; border: 0; cursor: pointer; color: inherit; }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}

.section-header { text-align: center; margin-bottom: 60px; }
.section-header h2 {
  font-size: 2.4rem;
  color: var(--concrete-gray);
  margin-bottom: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
}
.section-header p {
  font-size: 0.95rem;
  color: var(--tech-blue);
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-weight: 600;
}
.dark-mode .section-header h2 { color: #fff; }
.dark-mode .section-header p { color: var(--glow-blue); }

.btn-primary {
  display: inline-block;
  padding: 12px 30px;
  background: var(--tech-blue);
  color: #fff;
  font-weight: 500;
  letter-spacing: 0.06em;
  transition: background 0.3s, box-shadow 0.3s, transform 0.3s;
}
.btn-primary:hover {
  background: var(--glow-blue);
  box-shadow: 0 8px 20px rgba(10, 88, 202, 0.28);
  transform: translateY(-2px);
}
.btn-outline-light {
  display: inline-block;
  padding: 12px 30px;
  border: 1px solid var(--glow-blue);
  color: var(--glow-blue);
  background: transparent;
  transition: background 0.3s, color 0.3s;
}
.btn-outline-light:hover {
  background: var(--glow-blue);
  color: #fff;
}

/* —— Header —— */
header#header {
  position: fixed;
  top: 0;
  width: 100%;
  height: var(--header-h);
  z-index: 1000;
  transition: all 0.35s ease;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(11, 17, 32, 0.28);
  backdrop-filter: blur(12px);
}
header#header.scrolled {
  background: rgba(11, 17, 32, 0.96);
  height: 72px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}
body:not(.is-home) header#header {
  background: rgba(11, 17, 32, 0.96);
  height: 72px;
}
.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  gap: 1rem;
}
.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  line-height: 0;
}
.logo img {
  display: block;
  height: 44px;
  max-width: 220px;
  width: auto;
  object-fit: contain;
}
.nav-links {
  display: flex;
  align-items: stretch;
  height: 100%;
  gap: 0.15rem;
  flex: 1;
  justify-content: flex-end;
}
.nav-links > li {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
}
.nav-links > li > a {
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 0 0.7rem;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  white-space: nowrap;
  transition: color 0.25s;
}
.nav-links > li > a:hover,
.nav-links > li.is-active > a { color: var(--glow-blue); }
.nav-links .caret {
  width: 0.85em;
  height: 0.85em;
  opacity: 0.75;
}
.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 168px;
  background: #fff;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.14);
  border-top: 3px solid var(--tech-blue);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.22s ease;
  z-index: 40;
}
.nav-links > li:hover > .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown > li > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.35rem;
  padding: 0.75rem 1.05rem;
  font-size: 0.88rem;
  color: var(--text-main);
  border-bottom: 1px solid #eef2f7;
  transition: background 0.2s, color 0.2s, padding-left 0.2s;
}
.dropdown > li > a:hover {
  background: var(--light-bg);
  color: var(--tech-blue);
  padding-left: 1.25rem;
}
.dropdown .caret-right {
  width: 0.75em;
  height: 0.75em;
  flex-shrink: 0;
  opacity: 0.55;
}
.dropdown .has-sub {
  position: relative;
}
.dropdown-sub {
  position: absolute;
  left: calc(100% - 2px);
  top: -3px;
  min-width: 132px;
  max-height: 70vh;
  overflow-y: auto;
  background: #fff;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.14);
  border-top: 3px solid var(--tech-blue);
  opacity: 0;
  visibility: hidden;
  transform: translateX(6px);
  transition: all 0.2s ease;
  z-index: 45;
}
.dropdown .has-sub:hover > .dropdown-sub {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}
.dropdown-sub a {
  display: block;
  padding: 0.65rem 1rem;
  font-size: 0.86rem;
  color: var(--text-main);
  border-bottom: 1px solid #eef2f7;
}
.dropdown-sub a:hover {
  background: var(--light-bg);
  color: var(--tech-blue);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-shrink: 0;
}
.lang-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  padding: 0.38rem 0.7rem;
  border: 1px solid rgba(255, 255, 255, 0.35);
  white-space: nowrap;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.lang-switch:hover {
  color: #fff;
  border-color: var(--glow-blue);
  background: rgba(62, 139, 255, 0.12);
}
.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}
.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  transition: transform 0.3s, opacity 0.3s;
}
.menu-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.is-open span:nth-child(2) { opacity: 0; }
.menu-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-mobile {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--dark-bg);
  padding: 1rem 1.25rem 2rem;
  overflow-y: auto;
  z-index: 1100;
}
.nav-mobile.is-open { display: block; }
.nav-mobile details { border-bottom: 1px solid rgba(255,255,255,0.08); }
.nav-mobile summary,
.nav-mobile > a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.95rem 0.2rem;
  color: #fff;
  font-size: 1.02rem;
  list-style: none;
  cursor: pointer;
}
.nav-mobile summary::-webkit-details-marker { display: none; }
.nav-mobile details a {
  display: block;
  padding: 0.6rem 1rem;
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
}
body.nav-open { overflow: hidden; }

/* —— Hero —— */
.hero {
  position: relative;
  height: 100vh;
  min-height: 680px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #000;
}
.hero-slider {
  position: absolute;
  inset: 0;
  z-index: 1;
}
.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s ease, visibility 0.8s ease;
  display: flex;
  align-items: center;
}
.hero-slide.is-active {
  opacity: 1;
  visibility: visible;
  z-index: 1;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
  transform: scale(1.04);
  will-change: transform;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(11,17,32,0.88) 0%, rgba(11,17,32,0.35) 55%, rgba(11,17,32,0.2) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  max-width: min(1100px, 96vw);
  overflow: visible;
}
.hero-controls {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
}
.hero-arrow {
  pointer-events: auto;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border: 1px solid rgba(255,255,255,0.35);
  background: rgba(11,17,32,0.35);
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}
.hero-arrow::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 10px;
  border-top: 2px solid #fff;
  border-right: 2px solid #fff;
}
.hero-prev { left: 24px; }
.hero-prev::before { transform: translate(-40%, -50%) rotate(-135deg); }
.hero-next { right: 24px; }
.hero-next::before { transform: translate(-60%, -50%) rotate(45deg); }
.hero-arrow:hover {
  background: rgba(10,88,202,0.55);
  border-color: rgba(255,255,255,0.7);
}
.hero-dots {
  position: absolute;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  z-index: 4;
  display: flex;
  gap: 10px;
}
.hero-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.65);
  background: transparent;
  padding: 0;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}
.hero-dots button.is-active {
  background: #fff;
  transform: scale(1.15);
}
.hero-title {
  font-size: clamp(1.35rem, 2.6vw + 0.55rem, 3.35rem);
  line-height: 1.25;
  font-weight: 900;
  margin-bottom: 1rem;
  letter-spacing: 0.06em;
  white-space: nowrap !important;
  word-break: keep-all;
  overflow-wrap: normal;
  opacity: 0;
  transform: translateY(28px);
}
.hero-subtitle {
  font-size: clamp(0.88rem, 1.35vw, 1.15rem);
  color: #E2E8F0;
  margin-bottom: 2rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  max-width: 42em;
  opacity: 0;
  transform: translateY(28px);
}
.hero-content .btn-primary {
  opacity: 0;
  transform: translateY(24px);
}
.hero-slide.is-active .hero-title {
  animation: fadeUp 0.9s 0.15s forwards;
}
.hero-slide.is-active .hero-subtitle {
  animation: fadeUp 0.9s 0.35s forwards;
}
.hero-slide.is-active .hero-content .btn-primary {
  animation: fadeUp 0.9s 0.55s forwards;
}
.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 72px;
  z-index: 3;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.72);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  opacity: 0;
  animation: fadeUp 1s 1s forwards;
}
.hero-scroll span {
  width: 22px;
  height: 34px;
  border: 1.5px solid rgba(255,255,255,0.55);
  border-radius: 12px;
  position: relative;
}
.hero-scroll span::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 7px;
  width: 3px;
  height: 7px;
  margin-left: -1.5px;
  border-radius: 2px;
  background: #fff;
  animation: scrollDot 1.6s ease-in-out infinite;
}
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }
@keyframes scrollDot {
  0% { opacity: 1; transform: translateY(0); }
  70% { opacity: 0; transform: translateY(12px); }
  100% { opacity: 0; transform: translateY(12px); }
}
.hero-slide.is-active .hero-bg {
  animation: kenburns 18s ease-in-out infinite alternate;
}
@keyframes kenburns {
  0% { transform: scale(1) translate(0, 0); }
  100% { transform: scale(1.08) translate(calc(-1.2% + var(--mx, 0px)), calc(-0.8% + var(--my, 0px))); }
}

/* —— Scroll reveal (H5) —— */
[data-reveal] {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.75s cubic-bezier(0.22, 1, 0.36, 1), transform 0.75s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: opacity, transform;
}
[data-reveal].is-in {
  opacity: 1;
  transform: none;
}
[data-reveal="left"] { transform: translateX(-40px); }
[data-reveal="right"] { transform: translateX(40px); }
[data-reveal="left"].is-in,
[data-reveal="right"].is-in { transform: none; }
[data-reveal="zoom"] { transform: scale(0.94); }
[data-reveal="zoom"].is-in { transform: none; }
[data-reveal][data-delay="1"] { transition-delay: 0.08s; }
[data-reveal][data-delay="2"] { transition-delay: 0.16s; }
[data-reveal][data-delay="3"] { transition-delay: 0.24s; }
[data-reveal][data-delay="4"] { transition-delay: 0.32s; }

@media (prefers-reduced-motion: reduce) {
  .hero-title,
  .hero-subtitle,
  .hero-content .btn-primary,
  .hero-scroll,
  .hero-bg.is-ready,
  .hero-slide.is-active .hero-bg { animation: none !important; opacity: 1; transform: none; }
  .hero-scroll span::after { animation: none !important; }
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}
/* 极窄屏才允许标题折行，其余一律单行 */
@media (max-width: 420px) {
  .hero-title {
    white-space: normal !important;
    font-size: clamp(1.4rem, 7vw, 1.75rem);
    letter-spacing: 0.04em;
  }
  .hero-scroll { display: none; }
}

/* —— About —— */
.about-section { padding: 100px 0; background: #fff; }
.about-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
}
.about-image {
  position: relative;
  overflow: hidden;
  background: #111;
}
.about-image img {
  width: 100%;
  height: 100%;
  min-height: 420px;
  object-fit: cover;
  transition: transform 0.6s;
}
.about-image:hover img { transform: scale(1.03); }
.about-play {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  width: 78px;
  height: 78px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.85);
  background: rgba(10, 88, 202, 0.72);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.25s, background 0.25s, box-shadow 0.25s;
  box-shadow: 0 10px 28px rgba(0,0,0,0.28);
}
.about-play:hover {
  transform: translate(-50%, -50%) scale(1.06);
  background: rgba(10, 88, 202, 0.9);
}
.about-play-icon {
  width: 0;
  height: 0;
  margin-left: 4px;
  border-style: solid;
  border-width: 12px 0 12px 20px;
  border-color: transparent transparent transparent #fff;
}
.video-modal[hidden] { display: none !important; }
.video-modal {
  position: fixed;
  inset: 0;
  z-index: 4000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.video-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(5, 8, 16, 0.78);
}
.video-modal-dialog {
  position: relative;
  z-index: 1;
  width: min(920px, 96vw);
  background: #0B1120;
  border: 1px solid rgba(255,255,255,0.12);
  box-shadow: 0 24px 60px rgba(0,0,0,0.45);
}
.video-modal-close {
  position: absolute;
  right: 10px;
  top: 6px;
  z-index: 2;
  width: 40px;
  height: 40px;
  color: #fff;
  font-size: 1.8rem;
  line-height: 1;
  cursor: pointer;
}
.video-modal-body {
  padding: 48px 16px 16px;
}
.video-modal-body video {
  display: block;
  width: 100%;
  max-height: 70vh;
  background: #000;
}
.about-content h3 {
  font-size: 1.9rem;
  color: var(--concrete-gray);
  margin-bottom: 1.1rem;
  letter-spacing: 0.04em;
}
.about-content p {
  color: #64748B;
  margin-bottom: 1rem;
  font-size: 1.02rem;
}

.data-bar {
  background: var(--dark-bg);
  padding: 60px 0;
  color: #fff;
  position: relative;
}
.data-bar::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(62, 139, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(62, 139, 255, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
}
.data-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  position: relative;
  z-index: 2;
}
.data-item { text-align: center; }
.data-number {
  font-size: 3.2rem;
  font-weight: 900;
  font-family: Arial, sans-serif;
  color: var(--glow-blue);
  line-height: 1.1;
}
.data-label { color: var(--text-light); font-size: 0.95rem; margin-top: 0.4rem; }

/* —— Business —— */
.business-section { padding: 100px 0; background: var(--light-bg); }
.business-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.biz-card {
  position: relative;
  height: 420px;
  overflow: hidden;
  display: block;
  background: #111;
  cursor: default;
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.45s;
}
.biz-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 36px rgba(11, 17, 32, 0.22);
}
.biz-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s, filter 0.5s;
  filter: grayscale(55%) brightness(0.78);
}
.biz-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11,17,32,0.92) 0%, transparent 55%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px 24px;
  color: #fff;
}
.biz-no {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.55);
  margin-bottom: 0.55rem;
  font-family: Arial, sans-serif;
}
.biz-overlay h3 {
  font-size: 1.35rem;
  margin-bottom: 0.55rem;
  transition: color 0.3s, transform 0.3s;
}
.biz-overlay p {
  font-size: 0.92rem;
  color: #CBD5E1;
  opacity: 0;
  transform: translateY(16px);
  transition: all 0.35s;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.biz-card:hover img {
  transform: scale(1.08);
  filter: grayscale(0%) brightness(1);
}
.biz-card:hover .biz-overlay h3 {
  transform: translateY(-4px);
  color: var(--glow-blue);
}
.biz-card:hover .biz-overlay p {
  opacity: 1;
  transform: translateY(0);
}

/* —— Honors —— */
.honors-section { padding: 100px 0; background: #fff; }
.honors-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.honor-card {
  background: var(--light-bg);
  border: 1px solid #E2E8F0;
  padding: 20px;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  display: block;
}
.honor-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 32px rgba(0,0,0,0.08);
  border-color: var(--tech-blue);
}
.honor-card img {
  width: 100%;
  height: 160px;
  object-fit: contain;
  background: #fff;
  margin-bottom: 14px;
}
.honor-card p {
  font-size: 0.92rem;
  color: var(--concrete-gray);
  font-weight: 600;
  line-height: 1.5;
}

/* —— Projects —— */
.projects-section { padding: 100px 0; background: var(--dark-bg); }
.project-gallery {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
  grid-auto-rows: 260px;
}
.proj-item {
  position: relative;
  overflow: hidden;
  display: block;
  background: #111;
}
.proj-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s;
}
.proj-1 { grid-column: span 7; grid-row: span 2; }
.proj-2,
.proj-3 { grid-column: span 5; }
.proj-info {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  padding: 18px 20px;
  background: rgba(255,255,255,0.96);
  transform: translateY(12px);
  opacity: 0;
  transition: all 0.35s ease;
  border-left: 4px solid var(--tech-blue);
}
.proj-item:hover img { transform: scale(1.05); }
.proj-item:hover .proj-info {
  transform: translateY(0);
  opacity: 1;
}
.proj-info h4 {
  font-size: 1.15rem;
  color: var(--concrete-gray);
  margin-bottom: 4px;
}
.proj-info span {
  font-size: 0.85rem;
  color: var(--text-light);
}

/* —— News —— */
.news-section { padding: 100px 0; background: var(--light-bg); }
.news-wrapper {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 28px;
}
.news-featured {
  background: #fff;
  border: 1px solid #E2E8F0;
  overflow: hidden;
  display: block;
  transition: box-shadow 0.3s;
}
.news-featured:hover { box-shadow: 0 12px 28px rgba(0,0,0,0.06); }
.news-featured .thumb { overflow: hidden; }
.news-featured img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  transition: transform 0.5s;
}
.news-featured:hover img { transform: scale(1.04); }
.news-featured-content { padding: 28px; }
.news-date {
  color: var(--tech-blue);
  font-weight: 600;
  font-size: 0.88rem;
  margin-bottom: 10px;
  display: block;
}
.news-featured h3 {
  font-size: 1.4rem;
  color: var(--concrete-gray);
  margin-bottom: 12px;
  line-height: 1.45;
}
.news-featured p { color: #64748B; font-size: 0.98rem; }
.news-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.news-item {
  background: #fff;
  padding: 22px;
  border: 1px solid #E2E8F0;
  display: flex;
  gap: 18px;
  transition: box-shadow 0.3s;
}
.news-item:hover { box-shadow: 0 10px 22px rgba(0,0,0,0.05); }
.news-item-date {
  min-width: 72px;
  text-align: center;
  border-right: 1px solid #E2E8F0;
  padding-right: 16px;
  flex-shrink: 0;
}
.news-item-date strong {
  display: block;
  font-size: 1.7rem;
  color: var(--tech-blue);
  line-height: 1;
}
.news-item-date span {
  display: block;
  margin-top: 6px;
  font-size: 0.78rem;
  color: #94A3B8;
  white-space: nowrap;
  letter-spacing: 0.02em;
}
.news-item-content h4 {
  font-size: 1.05rem;
  color: var(--concrete-gray);
  margin-bottom: 6px;
  line-height: 1.45;
}
.news-item-content p {
  font-size: 0.88rem;
  color: #64748B;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* —— Footer —— */
footer#footer {
  background: #050810;
  color: var(--text-light);
  padding: 70px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-col h4 {
  color: #fff;
  font-size: 1.1rem;
  margin-bottom: 22px;
}
.footer-col p { margin-bottom: 12px; font-size: 0.92rem; }
.footer-col a {
  display: block;
  margin-bottom: 12px;
  transition: color 0.25s;
}
.footer-col a:hover { color: var(--glow-blue); }
.footer-col .logo {
  display: block;
  width: 100%;
  margin-bottom: 16px;
  line-height: 0;
}
.footer-col .logo img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  object-position: left center;
}
.footer-bottom {
  text-align: center;
  padding-top: 26px;
  font-size: 0.88rem;
}

/* —— Inner pages —— */
.page-banner {
  margin-top: 72px;
  padding: 72px 0 52px;
  background:
    linear-gradient(110deg, rgba(11,17,32,0.92), rgba(10,88,202,0.55)),
    url("../images/banner/banner-2.jpg") center/cover;
  color: #fff;
}
.page-banner h1 {
  font-size: clamp(1.9rem, 3.5vw, 2.7rem);
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  font-weight: 800;
}
.crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.7);
}
.crumb a:hover { color: #fff; }
.page-body {
  padding: 56px 0 80px;
  background: var(--light-bg);
}
.page-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 28px;
  align-items: start;
}
.side-nav {
  background: #fff;
  border: 1px solid #E2E8F0;
  padding: 0.35rem 0;
  position: sticky;
  top: 96px;
}
.side-nav .side-group {
  border-bottom: 1px solid #F1F5F9;
}
.side-nav .side-group:last-child {
  border-bottom: 0;
}
.side-nav .side-group.is-open {
  background: linear-gradient(180deg, rgba(10, 88, 202, 0.04), transparent 120%);
}
.side-nav .side-group.is-open .side-sub {
  border-left-color: #93C5FD;
}
.side-nav .side-main {
  display: block;
  padding: 0.75rem 1.05rem 0.45rem;
  color: #1E293B;
  font-size: 0.95rem;
  font-weight: 600;
  border-left: 3px solid transparent;
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}
.side-nav .side-main:hover {
  color: var(--tech-blue);
  background: #F8FAFC;
}
.side-nav .side-main.is-active,
.side-nav .side-main.is-parent {
  color: var(--tech-blue);
  border-left-color: var(--tech-blue);
  background: rgba(10, 88, 202, 0.06);
}
.side-nav .side-sub {
  position: relative;
  margin: 0 0 0.55rem 1.05rem;
  padding: 0.1rem 0 0.4rem 0.85rem;
  border-left: 2px solid #DBEAFE;
}
.side-nav .side-sub:not(:has(a)) {
  display: none;
  margin: 0;
  padding: 0;
  border: 0;
}
.side-nav .side-sub-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.75rem 0.4rem 0.15rem;
  color: #64748B;
  font-size: 0.88rem;
  font-weight: 400;
  border-left: 0;
  line-height: 1.35;
  transition: color 0.2s, background 0.2s;
}
.side-nav .side-sub-mark {
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  border-radius: 50%;
  background: #CBD5E1;
}
.side-nav .side-sub-link:hover {
  color: var(--tech-blue);
  background: transparent;
}
.side-nav .side-sub-link:hover .side-sub-mark {
  background: var(--tech-blue);
}
.side-nav .side-sub-link.is-active {
  color: var(--tech-blue);
  font-weight: 600;
  background: transparent;
}
.side-nav .side-sub-link.is-active .side-sub-mark {
  background: var(--tech-blue);
  box-shadow: 0 0 0 3px rgba(10, 88, 202, 0.15);
}
.content-panel {
  background: #fff;
  border: 1px solid #E2E8F0;
  padding: 32px 36px;
}
.content-panel h2 {
  font-size: 1.5rem;
  color: var(--concrete-gray);
  margin-bottom: 1.2rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid #E2E8F0;
}
.content-panel .lead {
  font-size: 1.05rem;
  color: var(--concrete-gray);
  margin-bottom: 1.1rem;
}
.content-panel p {
  color: #64748B;
  margin-bottom: 1rem;
}
.list-rows a {
  display: flex;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid #E2E8F0;
}
.list-rows a:hover { color: var(--tech-blue); }
.list-rows .t { flex: 1; font-weight: 500; line-height: 1.5; }
.list-rows .d { color: var(--tech-blue); white-space: nowrap; font-size: 0.9rem; }

/* 新闻列表：左图右文 */
.news-media-list {
  display: flex;
  flex-direction: column;
}
.news-media-item {
  display: grid;
  grid-template-columns: 168px 1fr;
  gap: 1.15rem 1.35rem;
  align-items: stretch;
  padding: 1.15rem 0;
  border-bottom: 1px solid #E2E8F0;
  transition: background 0.2s;
}
.news-media-item:first-child {
  padding-top: 0.35rem;
}
.news-media-item:hover {
  color: inherit;
}
.news-media-thumb {
  position: relative;
  overflow: hidden;
  background: #E2E8F0;
  min-height: 112px;
  border-radius: 8px;
}
.news-media-thumb img,
.news-media-placeholder {
  display: block;
  width: 100%;
  height: 112px;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-media-placeholder {
  background: linear-gradient(135deg, #0A58CA 0%, #0B1120 100%);
}
.news-media-item:hover .news-media-thumb img {
  transform: scale(1.04);
}
.news-media-body {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 0.1rem 0;
}
.news-media-body h3 {
  margin: 0 0 0.45rem;
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--concrete-gray);
  line-height: 1.45;
  transition: color 0.2s;
}
.news-media-item:hover .news-media-body h3 {
  color: var(--tech-blue);
}
.news-media-body p {
  margin: 0;
  flex: 1;
  color: #64748B;
  font-size: 0.92rem;
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-media-body time {
  margin-top: 0.55rem;
  color: var(--tech-blue);
  font-size: 0.86rem;
  font-weight: 500;
}
@media (max-width: 640px) {
  .news-media-item {
    grid-template-columns: 108px 1fr;
    gap: 0.85rem;
  }
  .news-media-thumb img,
  .news-media-placeholder {
    height: 84px;
  }
  .news-media-body h3 {
    font-size: 0.98rem;
  }
  .news-media-body p {
    -webkit-line-clamp: 2;
    font-size: 0.86rem;
  }
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 18px;
}
.card {
  border: 1px solid #E2E8F0;
  background: var(--light-bg);
  overflow: hidden;
  transition: transform 0.25s, border-color 0.25s;
}
.card:hover {
  transform: translateY(-3px);
  border-color: rgba(10, 88, 202, 0.35);
}
.card-media {
  height: 140px;
  background: linear-gradient(145deg, #0A58CA, #0B1120);
}
.card-body { padding: 1rem 1.1rem 1.25rem; }
.card-body .meta {
  color: var(--tech-blue);
  font-size: 0.78rem;
  margin-bottom: 0.35rem;
}
.card-body h3 {
  font-size: 1rem;
  color: var(--concrete-gray);
  line-height: 1.45;
}
.article h1 {
  font-size: clamp(1.35rem, 2.2vw, 1.75rem);
  color: var(--concrete-gray);
  line-height: 1.4;
  margin-bottom: 0.7rem;
}
.article .meta {
  color: var(--tech-blue);
  font-size: 0.9rem;
  margin-bottom: 1.35rem;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.contact-card h3 {
  font-size: 1.2rem;
  color: var(--concrete-gray);
  margin-bottom: 1rem;
}
.contact-card strong { color: var(--concrete-gray); }

/* —— Responsive —— */
@media (max-width: 1200px) {
  .nav-links > li > a { padding: 0 0.45rem; font-size: 0.84rem; }
  .about-wrapper,
  .news-wrapper { grid-template-columns: 1fr; }
  .data-grid,
  .business-grid { grid-template-columns: repeat(2, 1fr); }
  .honors-grid { grid-template-columns: repeat(2, 1fr); }
  .proj-1,
  .proj-2,
  .proj-3 { grid-column: span 12; }
}
@media (max-width: 900px) {
  .nav-links { display: none; }
  .menu-toggle { display: flex; }
  .page-layout { grid-template-columns: 1fr; }
  .side-nav {
    position: static;
    display: block;
  }
  .side-nav .side-group {
    border-bottom: 1px solid #F1F5F9;
  }
  .side-nav .side-sub {
    margin-left: 0.85rem;
  }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .container { padding: 0 20px; }
}
@media (max-width: 640px) {
  .data-grid,
  .business-grid,
  .honors-grid,
  .footer-grid { grid-template-columns: 1fr; }
  .biz-overlay p { opacity: 1; transform: none; }
  .proj-info { opacity: 1; transform: none; }
}