/* ========== Reset & Base ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --primary: #2c3e50;
  --primary-light: #3d5a73;
  --primary-dark: #1a2530;
  --accent: #e74c3c;
  --accent-light: #ec6553;
  --bg-dark: #161f2a;
  --bg-section: #f4f6f8;
  --text: #1e2a36;
  --text-light: #5a6b78;
  --white: #ffffff;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(44,62,80,.10);
  --shadow-lg: 0 8px 40px rgba(44,62,80,.15);
  --transition: .35s cubic-bezier(.4,0,.2,1);
  --max-width: 1200px;
  --header-h: 72px;
}
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: "Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;
  color: var(--text); background: var(--white); overflow-x: hidden; line-height: 1.7;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ========== Header ========== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; height: var(--header-h);
  background: rgba(255,255,255,.95); backdrop-filter: blur(12px);
  z-index: 999; box-shadow: 0 1px 0 rgba(44,62,80,.08);
  transition: var(--transition);
}
.site-header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,.08); }
.header-inner {
  max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.15rem; color: var(--primary); }
.logo-icon {
  width: 38px; height: 38px; border-radius: 9px;
  background: linear-gradient(135deg,var(--primary),var(--primary-light));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.3rem; font-weight: 900;
}
.logo-img {
  width: 44px; height: 44px; object-fit: contain; border-radius: 8px; flex-shrink: 0;
}
.logo-text small { display: block; font-size: .6rem; font-weight: 400; color: var(--text-light); }

/* Nav */
.main-nav ul { display: flex; gap: 8px; }
.main-nav a {
  padding: 8px 18px; border-radius: 8px; font-size: .95rem; font-weight: 500; color: var(--text);
}
.main-nav a:hover, .main-nav a.active { background: var(--primary); color: #fff; }

/* Mobile toggle */
.nav-toggle { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--primary); }

/* ========== Hero ========== */
.hero {
  min-height: 100vh; display: flex; align-items: center; position: relative; overflow: hidden;
  background: linear-gradient(135deg,#0e1721 0%,#1a2937 40%,#2c3e50 100%);
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 20% 80%, rgba(231,76,60,.12) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(61,90,115,.20) 0%, transparent 50%);
}
.hero::after {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 50px 50px;
}
.hero-inner {
  max-width: var(--max-width); margin: 0 auto; padding: 120px 24px 80px;
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
  position: relative; z-index: 2;
}
.hero-text { color: #fff; }
.hero-tag {
  display: inline-block; padding: 6px 16px; border-radius: 50px;
  background: rgba(231,76,60,.12); border: 1px solid rgba(231,76,60,.3);
  color: var(--accent-light); font-size: .85rem; margin-bottom: 24px;
}
.hero h1 { font-size: 2.6rem; font-weight: 800; line-height: 1.3; margin-bottom: 20px; }
.hero h1 span { color: var(--accent); }
.hero-desc { font-size: 1.05rem; color: rgba(255,255,255,.75); margin-bottom: 32px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 10px; font-weight: 600; font-size: .95rem;
  transition: var(--transition); cursor: pointer; border: none;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #c0392b; transform: translateY(-2px); box-shadow: 0 8px 24px rgba(231,76,60,.35); }
.btn-outline { background: transparent; border: 2px solid rgba(255,255,255,.25); color: #fff; }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

/* Hero visual */
.hero-visual { position: relative; }
.hero-card {
  background: rgba(255,255,255,.06); backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,.12); border-radius: 20px;
  padding: 36px; color: #fff;
}
.hero-card h3 { font-size: 1.2rem; margin-bottom: 20px; color: var(--accent); }
.hero-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.hero-stat { text-align: center; padding: 20px 10px; background: rgba(255,255,255,.04); border-radius: 12px; }
.hero-stat .num { font-size: 2rem; font-weight: 800; color: var(--accent); }
.hero-stat .label { font-size: .85rem; color: rgba(255,255,255,.65); margin-top: 4px; }

/* ========== Section ========== */
.section { padding: 90px 0; }
.section-alt { background: var(--bg-section); }
.section-inner { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section-head { text-align: center; margin-bottom: 56px; }
.section-head .tag {
  display: inline-block; padding: 5px 16px; border-radius: 50px;
  background: rgba(231,76,60,.08); color: var(--accent); font-size: .85rem; font-weight: 600;
  margin-bottom: 16px; text-transform: uppercase; letter-spacing: 1px;
}
.section-head h2 { font-size: 2rem; font-weight: 800; color: var(--text); }
.section-head p { color: var(--text-light); margin-top: 12px; font-size: 1rem; }

/* ========== About Cards ========== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.about-card {
  background: #fff; border-radius: var(--radius); padding: 40px;
  box-shadow: var(--shadow); transition: var(--transition);
  border: 1px solid rgba(44,62,80,.06);
}
.about-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.about-card h3 { font-size: 1.3rem; color: var(--primary); margin-bottom: 16px; display: flex; align-items: center; gap: 10px; }
.about-card h3::before { content: ''; width: 4px; height: 24px; background: var(--accent); border-radius: 2px; }
.about-card p { color: var(--text-light); font-size: .95rem; margin-bottom: 12px; }

/* Mission / Vision */
.mv-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: 24px; margin-top: 48px; }
.mv-card {
  text-align: center; padding: 36px 28px; background: #fff; border-radius: var(--radius);
  box-shadow: var(--shadow); transition: var(--transition);
}
.mv-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.mv-icon {
  width: 64px; height: 64px; margin: 0 auto 20px; border-radius: 16px;
  background: linear-gradient(135deg,var(--primary),var(--primary-light));
  display: flex; align-items: center; justify-content: center; font-size: 1.8rem; color: #fff;
}
.mv-card h4 { font-size: 1.15rem; color: var(--text); margin-bottom: 10px; }
.mv-card p { color: var(--text-light); font-size: .9rem; }

/* ========== Service ========== */
.service-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
.service-card {
  background: #fff; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); transition: var(--transition);
  border: 1px solid rgba(44,62,80,.06);
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-header { padding: 36px 28px 20px; background: linear-gradient(135deg,var(--primary-dark),var(--primary)); color: #fff; }
.service-header .icon { font-size: 2.2rem; margin-bottom: 12px; }
.service-header h3 { font-size: 1.25rem; }
.service-body { padding: 24px 28px; }
.service-body ul li {
  padding: 8px 0; border-bottom: 1px dashed rgba(0,0,0,.06);
  font-size: .9rem; color: var(--text-light); display: flex; align-items: flex-start; gap: 8px;
}
.service-body ul li::before { content: '\25B8'; color: var(--accent); font-size: 1rem; flex-shrink: 0; }
.service-body ul li:last-child { border-bottom: none; }

/* ========== News ========== */
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-item {
  display: flex; align-items: center; gap: 24px; padding: 24px 28px;
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow);
  transition: var(--transition); border-left: 4px solid transparent;
}
.news-item:hover { border-left-color: var(--accent); transform: translateX(6px); box-shadow: var(--shadow-lg); }
.news-date { text-align: center; flex-shrink: 0; width: 70px; }
.news-date .day { font-size: 1.6rem; font-weight: 800; color: var(--accent); }
.news-date .year { font-size: .8rem; color: var(--text-light); }
.news-content h4 { font-size: 1rem; color: var(--text); margin-bottom: 4px; }
.news-content p { font-size: .85rem; color: var(--text-light); }

/* ========== Contact ========== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.contact-info-card {
  background: linear-gradient(135deg,var(--primary-dark),var(--primary));
  border-radius: var(--radius); padding: 40px; color: #fff;
}
.contact-info-card h3 { font-size: 1.4rem; margin-bottom: 24px; }
.contact-item { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 20px; }
.contact-item .ci-icon { font-size: 1.3rem; flex-shrink: 0; }
.contact-item .ci-label { font-size: .8rem; color: rgba(255,255,255,.55); }
.contact-item .ci-value { font-size: 1rem; font-weight: 500; }

.contact-form { background: #fff; border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow); }
.contact-form h3 { font-size: 1.2rem; margin-bottom: 24px; color: var(--text); }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: .85rem; color: var(--text-light); margin-bottom: 6px; }
.form-group input, .form-group textarea {
  width: 100%; padding: 12px 16px; border: 1px solid #dfe4e8; border-radius: 8px;
  font-size: .9rem; font-family: inherit; transition: var(--transition);
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(231,76,60,.1); }
.form-group textarea { resize: vertical; min-height: 100px; }

/* ========== Footer ========== */
.site-footer { background: var(--bg-dark); color: rgba(255,255,255,.65); padding: 48px 0 24px; }
.footer-inner { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.footer-top { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; margin-bottom: 32px; }
.footer-logo { font-size: 1.1rem; font-weight: 700; color: #fff; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: .9rem; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 20px; text-align: center; font-size: .8rem; }

/* ========== Page Hero (inner pages) ========== */
.page-hero {
  padding: 140px 0 70px; background: linear-gradient(135deg,#0e1721,#1a2937);
  text-align: center; position: relative; overflow: hidden;
}
.page-hero::before {
  content: ''; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 40px 40px;
}
.page-hero-inner { position: relative; z-index: 2; }
.page-hero h1 { color: #fff; font-size: 2.2rem; margin-bottom: 12px; }
.page-hero p { color: rgba(255,255,255,.6); font-size: 1rem; }
.breadcrumb { display: flex; justify-content: center; gap: 8px; margin-top: 16px; font-size: .85rem; }
.breadcrumb a { color: rgba(255,255,255,.5); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: rgba(255,255,255,.3); }

/* ========== Animations ========== */
@keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
.fade-up { animation: fadeUp .8s ease forwards; }
.reveal { opacity: 0; transform: translateY(30px); transition: .8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ========== Gallery ========== */
.gallery-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
.gallery-item { border-radius:var(--radius); overflow:hidden; cursor:pointer; aspect-ratio:4/3; box-shadow:var(--shadow); transition:var(--transition); }
.gallery-item:hover { transform:scale(1.03); box-shadow:var(--shadow-lg); }
.gallery-item img { width:100%; height:100%; object-fit:cover; }
.gallery-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,.9); z-index:9999; align-items:center; justify-content:center; padding:40px; }
.gallery-overlay.open { display:flex; }
.gallery-overlay img { max-width:90%; max-height:85vh; border-radius:8px; object-fit:contain; }
.gallery-close { position:absolute; top:20px; right:30px; color:#fff; font-size:2.5rem; cursor:pointer; line-height:1; }
.gallery-prev,.gallery-next { position:absolute; top:50%; transform:translateY(-50%); background:none; border:none; color:#fff; font-size:2rem; cursor:pointer; padding:16px; opacity:.6; transition:var(--transition); }
.gallery-prev { left:20px; }
.gallery-next { right:20px; }
.gallery-prev:hover,.gallery-next:hover { opacity:1; }

/* ========== Responsive ========== */
@media (max-width: 900px) {
  .hero-inner, .about-grid, .mv-grid, .service-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2rem; }
  .mv-grid { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .main-nav { display: none; position: fixed; top: var(--header-h); left: 0; right: 0; background: #fff; padding: 16px; box-shadow: 0 4px 20px rgba(0,0,0,.1); }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; }
  .nav-toggle { display: block; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 1.6rem; }
  .section { padding: 60px 0; }
  .section-head h2 { font-size: 1.5rem; }
  .news-item { flex-direction: column; align-items: flex-start; }
  .gallery-grid { grid-template-columns: 1fr; }
}