/* ============================================
   蓝合海软件工作室 - 暗黑科技主题 v2.0
   ============================================ */

:root {
  --bg-primary: #000000;
  --bg-secondary: #0a0a0a;
  --bg-card: #111111;
  --bg-card-hover: #1a1a1a;
  --border-color: #1f1f1f;
  --border-glow: rgba(0, 122, 255, 0.3);
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  --accent: #007aff;
  --accent-hover: #409cff;
  --accent-glow: rgba(0, 122, 255, 0.4);
  --gradient-1: linear-gradient(135deg, #007aff, #00d4ff);
  --gradient-2: linear-gradient(135deg, #007aff, #5856d6);
  --gradient-3: linear-gradient(135deg, #ff2d55, #ff9500);
  --shadow-glow: 0 0 30px rgba(0, 122, 255, 0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; }
ul { list-style: none; }


.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes fadeInScale {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px rgba(0,122,255,0.2); }
  50% { box-shadow: 0 0 40px rgba(0,122,255,0.4); }
}
@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
@keyframes borderGlow {
  0%, 100% { border-color: var(--border-color); }
  50% { border-color: var(--accent); }
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Ripple 点击波纹 */
@keyframes rippleAnim {
  to { transform: scale(4); opacity: 0; }
}

/* 页面过渡 */
#page-transition {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: #000;
  z-index: 99999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
#page-transition.active {
  opacity: 1;
  pointer-events: all;
}

/* 滚动入场动画基类 */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* 交错延迟 */
.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; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* 缩放入场 */
.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal-scale.revealed {
  opacity: 1;
  transform: scale(1);
}

/* 从左侧滑入 */
.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

/* 从右侧滑入 */
.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

/* 图片懒加载模糊过渡 */
img[data-src] {
  filter: blur(10px);
  transition: filter 0.4s ease;
}
img.loaded {
  filter: blur(0);
}

/* 减少动效模式 */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  #page-transition { display: none !important; }
  .reveal, .reveal-scale, .reveal-left, .reveal-right {
    opacity: 1 !important;
    transform: none !important;
  }
  html { scroll-behavior: auto !important; }
}

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
  opacity: 0;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}
.header.scrolled { background: rgba(0,0,0,0.95); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.5px;
}
.logo-icon {
  width: 38px;
  height: 38px;
  background: var(--gradient-1);
  background-size: 200% 200%;
  animation: gradientShift 3s ease infinite;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.1rem;
  font-weight: 800;
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 500;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}
.nav a:hover { color: var(--text-primary); background: rgba(255,255,255,0.05); }
.nav a.active {
  color: #fff;
  background: rgba(0,122,255,0.15);
}
.nav a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text-primary); transition: var(--transition); border-radius: 2px; }

/* ===== Hero ===== */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: 100px 0 60px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -15%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(0,122,255,0.08) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(88,86,214,0.06) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 12s ease-in-out infinite reverse;
}

.hero-content { position: relative; z-index: 1; max-width: 800px; margin: 0 auto; text-align: center; }

.hero-badge {
  display: inline-block;
  padding: 6px 20px;
  background: rgba(0,122,255,0.1);
  border: 1px solid rgba(0,122,255,0.2);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 28px;
  animation: fadeInUp 0.6s ease;
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease 0.1s both;
}
.hero h1 span {
  background: var(--gradient-1);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 4s ease infinite;
}

.hero p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.8;
  animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; animation: fadeInUp 0.6s ease 0.3s both; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: 0.5s;
}
.btn:hover::before { left: 100%; }

.btn-primary {
  background: var(--gradient-1);
  background-size: 200% 200%;
  animation: gradientShift 4s ease infinite;
  color: #fff;
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 40px rgba(0,122,255,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid rgba(255,255,255,0.2);
}
.btn-outline:hover {
  border-color: var(--accent);
  background: rgba(0,122,255,0.1);
  transform: translateY(-3px);
}

/* ===== Sections ===== */
.section { padding: 90px 0; position: relative; }
.section-header { text-align: center; margin-bottom: 60px; }

.section-tag {
  display: inline-block;
  padding: 4px 16px;
  background: rgba(0,122,255,0.1);
  color: var(--accent);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 16px;
  border: 1px solid rgba(0,122,255,0.15);
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.section-title span { background: var(--gradient-1); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.section-desc { color: var(--text-secondary); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }

/* ===== Feature Cards ===== */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.feature-card {
  background: var(--bg-card);
  padding: 40px 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-1);
  background-size: 200% 200%;
  animation: gradientShift 3s ease infinite;
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,122,255,0.3);
  background: var(--bg-card-hover);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.feature-card:hover::before { opacity: 1; }

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
  background: rgba(0,122,255,0.1);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  transition: var(--transition);
}
.feature-card:hover .feature-icon { background: rgba(0,122,255,0.2); transform: scale(1.1); }

.feature-card h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 12px; }
.feature-card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }

/* ===== Service Cards ===== */
.services-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.service-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 36px;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::after {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 100px; height: 100px;
  background: radial-gradient(circle, rgba(0,122,255,0.06) 0%, transparent 70%);
  border-radius: 50%;
  transition: var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,122,255,0.3);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.service-card:hover::after { transform: scale(3); }

.service-card .icon {
  width: 56px; height: 56px;
  background: var(--gradient-1);
  background-size: 200% 200%;
  animation: gradientShift 4s ease infinite;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: white;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}
.service-card h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 12px; position: relative; z-index: 1; }
.service-card p { color: var(--text-secondary); line-height: 1.8; position: relative; z-index: 1; }

.service-features { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border-color); position: relative; z-index: 1; }
.service-features li {
  display: flex; align-items: center; gap: 8px;
  color: var(--text-muted); font-size: 0.9rem; padding: 4px 0;
}
.service-features li::before { content: '✓'; color: var(--accent); font-weight: bold; }

/* ===== Case Cards ===== */
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.case-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: var(--transition);
  display: block;
  color: inherit;
  text-decoration: none;
  position: relative;
}
.case-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-1);
  background-size: 200% 200%;
  animation: gradientShift 3s ease infinite;
  opacity: 0;
  transition: var(--transition);
  z-index: 2;
}
.case-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,122,255,0.3);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.case-card:hover::before { opacity: 1; }

.case-img {
  height: 180px;
  background: linear-gradient(135deg, #0a0a0a, #1a1a1a);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}
.case-img::after {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: conic-gradient(from 0deg, transparent, rgba(0,122,255,0.03), transparent, rgba(0,122,255,0.03), transparent);
  animation: spin 10s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.case-body { padding: 24px; position: relative; z-index: 1; }
.case-body .tag {
  display: inline-block;
  padding: 2px 12px;
  background: rgba(0,122,255,0.1);
  color: var(--accent);
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 500;
  margin-bottom: 10px;
}
.case-body h4 { font-size: 1.05rem; font-weight: 600; margin-bottom: 8px; }
.case-body p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; }

/* ===== Page Hero ===== */
.page-hero {
  padding: 120px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0,122,255,0.06) 0%, transparent 70%);
  border-radius: 50%;
}
.page-hero h1 { font-size: 2.8rem; font-weight: 800; margin-bottom: 12px; }
.page-hero p { color: var(--text-secondary); font-size: 1.1rem; }

/* ===== About ===== */
.about-intro { max-width: 800px; margin: 0 auto; text-align: center; }
.about-intro p { color: var(--text-secondary); font-size: 1.05rem; line-height: 1.9; margin-bottom: 16px; }

.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 48px; }

.value-card {
  text-align: center;
  padding: 40px 24px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.value-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0,122,255,0.3);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.value-card .num {
  font-size: 2.5rem; font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}
.value-card h4 { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; }
.value-card p { color: var(--text-secondary); font-size: 0.9rem; }

/* ===== Contact ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-info h3 { font-size: 1.4rem; font-weight: 600; margin-bottom: 24px; }

.contact-detail {
  display: flex; align-items: flex-start; gap: 16px;
  margin-bottom: 20px;
  padding: 16px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.contact-detail:hover { border-color: rgba(0,122,255,0.3); }

.contact-detail .icon {
  width: 44px; height: 44px;
  background: rgba(0,122,255,0.1);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; flex-shrink: 0;
}
.contact-detail .label { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 2px; }
.contact-detail .value { font-size: 1rem; color: var(--text-primary); font-weight: 500; }

.contact-form {
  background: var(--bg-card);
  padding: 36px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}
.contact-form h3 { font-size: 1.2rem; font-weight: 600; margin-bottom: 24px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.9rem; font-weight: 500; color: var(--text-secondary); margin-bottom: 6px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 12px 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  color: var(--text-primary);
  transition: var(--transition);
  font-family: inherit;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,122,255,0.1);
}
.form-group textarea { height: 120px; resize: vertical; }

/* ===== Article Detail ===== */
.article-detail-wrap {
  padding: 120px 0 60px;
  position: relative;
}
.article-detail-wrap .article-content {
  background: var(--bg-card);
  padding: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  line-height: 1.9;
  font-size: 1.05rem;
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 40px; }
.footer-brand h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 16px; }
.footer-brand p { line-height: 1.8; font-size: 0.9rem; color: var(--text-secondary); max-width: 300px; }
.footer-col h4 { font-size: 1rem; font-weight: 600; margin-bottom: 16px; }
.footer-col a { display: block; color: var(--text-muted); font-size: 0.9rem; padding: 4px 0; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid var(--border-color); padding-top: 24px; text-align: center; font-size: 0.85rem; color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 2.4rem; }
}
@media (max-width: 768px) {
  .section-title { font-size: 1.6rem; }
  .hero h1 { font-size: 1.8rem; }
  .hero { min-height: auto; padding: 100px 0 60px; }
  .nav { display: none; }
  .nav-toggle { display: flex; }
  .nav.active {
    display: flex; flex-direction: column;
    position: absolute; top: 70px; left: 0; right: 0;
    background: rgba(0,0,0,0.95);
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    gap: 4px;
  }
  .features-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .article-detail-wrap .article-content { padding: 24px; }
}