/* ============================================
   卓越印务 — 公司官网样式
   ============================================ */

/* --- Reset & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #1a73e8;
  --primary-dark: #0d47a1;
  --primary-light: #4fc3f7;
  --accent: #ff6f00;
  --dark: #0a1628;
  --dark2: #111d35;
  --dark3: #162245;
  --gray: #6b7280;
  --gray-light: #e5e7eb;
  --gray-bg: #f8fafc;
  --white: #ffffff;
  --text: #1f2937;
  --text-light: #6b7280;
  --radius: 12px;
  --transition: 0.3s cubic-bezier(.4,0,.2,1);
  --shadow: 0 4px 24px rgba(0,0,0,.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.12);
  --max-width: 1200px;
}

html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  line-height: 1.7;
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }
.section-dark { background: var(--dark); color: var(--white); }
.section-dark .section-desc { color: rgba(255,255,255,.6); }

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 32px; border-radius: 8px; font-size: .95rem;
  font-weight: 600; border: none; cursor: pointer;
  transition: var(--transition); letter-spacing: .3px;
}
.btn-primary {
  background: var(--primary); color: var(--white);
  box-shadow: 0 4px 16px rgba(26,115,232,.3);
}
.btn-primary:hover {
  background: var(--primary-dark); transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(26,115,232,.4);
}
.btn-outline {
  background: transparent; color: var(--white);
  border: 2px solid rgba(255,255,255,.4);
}
.btn-outline:hover {
  border-color: var(--white); background: rgba(255,255,255,.1);
  transform: translateY(-2px);
}
.btn-lg { padding: 16px 40px; font-size: 1.05rem; }

/* --- Section Header --- */
.section-header {
  text-align: center; max-width: 700px; margin: 0 auto 60px;
}
.section-tag {
  display: inline-block; padding: 6px 18px; border-radius: 20px;
  background: rgba(26,115,232,.1); color: var(--primary);
  font-size: .82rem; font-weight: 600; letter-spacing: 1px;
  margin-bottom: 16px;
}
.section-dark .section-tag { background: rgba(79,195,247,.15); color: var(--primary-light); }
.section-title {
  font-size: 2.2rem; font-weight: 800; line-height: 1.25;
  margin-bottom: 16px;
}
.section-dark .section-title { color: var(--white); }
.section-desc {
  font-size: 1.05rem; color: var(--text-light); line-height: 1.7;
}

/* ========== Navigation ========== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  padding: 16px 0; transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(10,22,40,.95); backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px); padding: 10px 0;
  box-shadow: 0 2px 20px rgba(0,0,0,.1);
}
.nav-container {
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
}
.logo-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--primary); color: var(--white);
  font-weight: 800; font-size: .85rem; letter-spacing: 1px;
}
.logo-text { font-size: 1.2rem; font-weight: 700; color: var(--white); }
.nav-menu {
  display: flex; gap: 8px;
}
.nav-link {
  padding: 8px 16px; border-radius: 6px; color: rgba(255,255,255,.75);
  font-size: .92rem; font-weight: 500; transition: var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--white); background: rgba(255,255,255,.1); }

/* Hamburger */
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--white); border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* ========== Hero ========== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark2) 50%, var(--dark3) 100%);
  overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(26,115,232,.12) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(79,195,247,.08) 0%, transparent 50%);
  pointer-events: none;
}
.hero-overlay { display: none; }
.hero-content { position: relative; z-index: 2; padding: 120px 0 80px; max-width: 720px; }
.hero-title {
  font-size: 3.5rem; font-weight: 800; color: var(--white);
  line-height: 1.15; margin-bottom: 24px;
}
.highlight {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 1.15rem; color: rgba(255,255,255,.65);
  line-height: 1.8; margin-bottom: 40px; max-width: 600px;
}
.hero-buttons { display: flex; gap: 16px; }

/* Scroll Indicator */
.scroll-indicator {
  position: absolute; bottom: 40px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: rgba(255,255,255,.4); font-size: .8rem; letter-spacing: 1px;
}
.scroll-arrow {
  width: 20px; height: 20px; border-right: 2px solid rgba(255,255,255,.3);
  border-bottom: 2px solid rgba(255,255,255,.3);
  transform: rotate(45deg); animation: scrollBounce 2s infinite;
}
@keyframes scrollBounce {
  0%, 100% { transform: rotate(45deg) translate(0,0); opacity: .4; }
  50% { transform: rotate(45deg) translate(4px,4px); opacity: 1; }
}

/* ========== Stats ========== */
.stats-bar {
  background: var(--white); padding: 60px 0;
  border-bottom: 1px solid var(--gray-light);
}
.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.stat-item { text-align: center; }
.stat-number {
  font-size: 2.8rem; font-weight: 800; color: var(--primary);
  line-height: 1;
}
.stat-plus, .stat-percent { font-size: 1.8rem; font-weight: 700; color: var(--primary); }
.stat-label { margin-top: 8px; color: var(--text-light); font-size: .95rem; }

/* ========== About ========== */
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
  align-items: center;
}
.about-image { position: relative; }
.image-placeholder {
  position: relative; border-radius: var(--radius);
  overflow: hidden; aspect-ratio: 4/3;
}
.image-placeholder svg { width: 100%; height: 100%; display: block; }
.image-overlay-content {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; color: rgba(255,255,255,.7);
  background: rgba(0,0,0,.3); backdrop-filter: blur(2px);
}
.about-text h3 { font-size: 1.5rem; font-weight: 700; margin-bottom: 16px; }
.about-text p { margin-bottom: 16px; color: var(--text-light); line-height: 1.8; }
.about-features { margin-top: 8px; }
.about-features li {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 8px 0; color: var(--text); font-weight: 500;
}
.about-features .check { color: var(--primary); font-weight: 700; }

/* ========== Technology ========== */
.tech-grid {
  display: grid; grid-template-columns: repeat(4,1fr); gap: 24px;
  margin-bottom: 60px;
}
.tech-card {
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius); padding: 32px 24px;
  transition: var(--transition);
}
.tech-card:hover {
  background: rgba(255,255,255,.08); transform: translateY(-4px);
  border-color: rgba(79,195,247,.2);
}
.tech-icon {
  width: 48px; height: 48px; margin-bottom: 20px;
  color: var(--primary-light);
}
.tech-icon svg { width: 100%; height: 100%; }
.tech-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 16px; color: var(--white); }
.tech-card ul li {
  padding: 4px 0; color: rgba(255,255,255,.65); font-size: .9rem;
  position: relative; padding-left: 14px;
}
.tech-card ul li::before {
  content: '›'; position: absolute; left: 0; color: var(--primary-light);
  font-weight: 700;
}

/* Equipment Table */
.equipment-section { margin-top: 20px; }
.equipment-title {
  font-size: 1.3rem; font-weight: 700; margin-bottom: 20px;
  text-align: center; color: var(--white);
}
.table-wrapper { overflow-x: auto; }
.eq-table {
  width: 100%; border-collapse: collapse;
  background: rgba(255,255,255,.04);
  border-radius: var(--radius); overflow: hidden;
}
.eq-table th, .eq-table td {
  padding: 14px 20px; text-align: left;
  border-bottom: 1px solid rgba(255,255,255,.06);
  font-size: .92rem;
}
.eq-table th {
  background: rgba(255,255,255,.06);
  color: var(--primary-light); font-weight: 600;
  font-size: .85rem; text-transform: uppercase; letter-spacing: .5px;
}
.eq-table td { color: rgba(255,255,255,.75); }
.eq-table tr:last-child td { border-bottom: none; }

/* ========== Products ========== */
.products-grid {
  display: grid; grid-template-columns: repeat(4,1fr); gap: 24px;
}
.product-card {
  background: var(--white); border: 1px solid var(--gray-light);
  border-radius: var(--radius); overflow: hidden;
  transition: var(--transition);
}
.product-card:hover {
  transform: translateY(-4px); box-shadow: var(--shadow-lg);
}
.product-img {
  position: relative; aspect-ratio: 200/140; overflow: hidden;
}
.product-img svg { width: 100%; height: 100%; }
.product-img-label {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  font-size: 2.5rem;
}
.product-card h3 {
  font-size: 1.1rem; font-weight: 700; padding: 16px 20px 0;
}
.product-card p {
  padding: 8px 20px 20px; color: var(--text-light);
  font-size: .9rem; line-height: 1.7;
}

/* ========== Quality ========== */
.quality-steps {
  display: grid; grid-template-columns: repeat(4,1fr); gap: 24px;
}
.quality-step {
  text-align: center; padding: 40px 24px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius); transition: var(--transition);
}
.quality-step:hover {
  background: rgba(255,255,255,.08); transform: translateY(-4px);
}
.step-number {
  font-size: 3rem; font-weight: 800;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; line-height: 1; margin-bottom: 16px;
}
.quality-step h3 {
  font-size: 1.1rem; font-weight: 700; margin-bottom: 12px;
  color: var(--white);
}
.quality-step p { color: rgba(255,255,255,.6); font-size: .9rem; line-height: 1.7; }

/* ========== CTA ========== */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  text-align: center; padding: 80px 0;
}
.cta-content h2 {
  font-size: 2rem; color: var(--white); margin-bottom: 16px;
}
.cta-content p {
  font-size: 1.1rem; color: rgba(255,255,255,.75); margin-bottom: 32px;
}
.cta-content .btn-primary {
  background: var(--white); color: var(--primary);
  box-shadow: 0 4px 16px rgba(0,0,0,.2);
}
.cta-content .btn-primary:hover {
  background: var(--gray-bg); transform: translateY(-2px);
}

/* ========== Contact ========== */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1.5fr; gap: 48px;
}
.contact-info { display: flex; flex-direction: column; gap: 28px; }
.contact-item {
  display: flex; gap: 16px; align-items: flex-start;
}
.contact-icon {
  width: 44px; height: 44px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px; background: rgba(26,115,232,.1);
  color: var(--primary);
}
.contact-icon svg { width: 22px; height: 22px; }
.contact-item h4 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
.contact-item p { color: var(--text-light); font-size: .92rem; }
.contact-link { color: var(--primary); }
.contact-link:hover { text-decoration: underline; }

/* Contact Form */
.contact-form {
  background: var(--white); padding: 36px; border-radius: var(--radius);
  box-shadow: var(--shadow-lg); border: 1px solid var(--gray-light);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block; font-size: .9rem; font-weight: 600;
  margin-bottom: 6px; color: var(--text);
}
.form-group input, .form-group textarea {
  width: 100%; padding: 12px 16px; border: 1px solid var(--gray-light);
  border-radius: 8px; font-size: .95rem; font-family: inherit;
  transition: var(--transition); background: var(--gray-bg);
  outline: none;
}
.form-group input:focus, .form-group textarea:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,115,232,.15);
  background: var(--white);
}
.form-group textarea { resize: vertical; }
.btn-submit { width: 100%; }
.form-note {
  text-align: center; margin-top: 12px;
  font-size: .8rem; color: var(--text-light);
}

/* ========== Footer ========== */
.footer {
  background: var(--dark); color: rgba(255,255,255,.7);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px; padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.footer-logo {
  font-size: 1.3rem; font-weight: 700; color: var(--white);
  display: block; margin-bottom: 12px;
}
.footer-brand p { font-size: .9rem; line-height: 1.7; }
.footer-links h4, .footer-contact h4 {
  color: var(--white); font-size: .95rem; font-weight: 600;
  margin-bottom: 16px;
}
.footer-links ul li { margin-bottom: 10px; }
.footer-links ul li a {
  font-size: .9rem; transition: var(--transition); color: rgba(255,255,255,.6);
}
.footer-links ul li a:hover { color: var(--primary-light); }
.footer-contact p { font-size: .9rem; margin-bottom: 8px; }
.footer-bottom {
  padding: 24px 0; text-align: center; font-size: .85rem;
  color: rgba(255,255,255,.4);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .tech-grid, .products-grid, .quality-steps {
    grid-template-columns: repeat(2,1fr);
  }
  .footer-grid { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .hero-title { font-size: 2.2rem; }
  .hero-subtitle { font-size: 1rem; }
  .section-title { font-size: 1.6rem; }
  .stats-grid { grid-template-columns: repeat(2,1fr); gap: 32px; }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .tech-grid, .products-grid, .quality-steps { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-content h2 { font-size: 1.5rem; }

  /* Mobile nav */
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
    background: var(--dark2); flex-direction: column;
    padding: 80px 24px 24px; transition: var(--transition);
    box-shadow: -4px 0 20px rgba(0,0,0,.3);
  }
  .nav-menu.open { right: 0; }
  .nav-link { padding: 14px 16px; font-size: 1rem; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.8rem; }
  .hero-buttons { flex-direction: column; gap: 12px; }
  .btn { width: 100%; }
  .contact-form { padding: 24px; }
}

/* ========== Animations ========== */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion) {
  .fade-in { opacity: 1; transform: none; }
}