/* ============================================================
   Lanan Media - 统一全局样式表 (common.css)
   设计风格：深色科技主题 + 青蓝/金色强调色
   ============================================================ */

/* ---- CSS 变量 ---- */
:root {
  --color-bg-primary: #0a1628;
  --color-bg-secondary: #0d1f3c;
  --color-bg-card: #152642;
  --color-bg-card-hover: #1a3050;
  --color-bg-input: #0f2340;
  --color-border: rgba(0, 212, 255, 0.15);
  --color-border-hover: rgba(0, 212, 255, 0.4);
  --color-accent-cyan: #00d4ff;
  --color-accent-gold: #f0c060;
  --color-accent-cyan-dim: rgba(0, 212, 255, 0.12);
  --color-accent-gold-dim: rgba(240, 192, 96, 0.12);
  --color-text-primary: #e8ecf1;
  --color-text-secondary: #8899aa;
  --color-text-muted: #5a6d80;
  --color-gradient-cyan: linear-gradient(135deg, #00d4ff, #0099cc);
  --color-gradient-gold: linear-gradient(135deg, #f0c060, #d49430);
  --color-gradient-hero: linear-gradient(160deg, #0a1628 0%, #0d1f3c 40%, #0a1830 100%);
  --color-overlay-dark: rgba(10, 22, 40, 0.85);
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-card-hover: 0 8px 40px rgba(0, 212, 255, 0.15);
  --shadow-glow-cyan: 0 0 30px rgba(0, 212, 255, 0.25);
  --shadow-glow-gold: 0 0 30px rgba(240, 192, 96, 0.25);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.35s ease;
  --transition-slow: 0.5s ease;
}

/* ---- 全局重置 ---- */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
}

a {
  color: var(--color-accent-cyan);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--color-accent-gold);
}

img {
  max-width: 100%;
  height: auto;
}

::selection {
  background: var(--color-accent-cyan);
  color: var(--color-bg-primary);
}

/* ---- 自定义滚动条 ---- */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--color-bg-card-hover);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent-cyan);
}

/* ---- 导航栏 ---- */
.navbar-custom {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 22, 40, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: 0;
  transition: all var(--transition-normal);
}
.navbar-custom.scrolled {
  background: rgba(10, 22, 40, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}
.navbar-custom .navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 76px;
}
.navbar-custom .navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: 0.5px;
}
.navbar-custom .navbar-brand .brand-logo {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  object-fit: contain;
}
.navbar-custom .navbar-brand span {
  background: var(--color-gradient-cyan);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.navbar-custom .nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.navbar-custom .nav-links a {
  display: block;
  padding: 10px 20px;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  letter-spacing: 0.3px;
}
.navbar-custom .nav-links a:hover,
.navbar-custom .nav-links a.active {
  color: var(--color-accent-cyan);
  background: var(--color-accent-cyan-dim);
}
.navbar-custom .nav-links a.btn-nav-contact {
  background: var(--color-gradient-cyan);
  color: var(--color-bg-primary);
  font-weight: 600;
  padding: 10px 24px;
  border-radius: 50px;
  margin-left: 8px;
}
.navbar-custom .nav-links a.btn-nav-contact:hover {
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-1px);
}
.navbar-custom .navbar-toggler {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
}
.navbar-custom .navbar-toggler:hover {
  background: var(--color-accent-cyan-dim);
}

@media (max-width: 991px) {
  .navbar-custom .navbar-toggler {
    display: block;
  }
  .navbar-custom .nav-links {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 22, 40, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    gap: 12px;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    z-index: 999;
  }
  .navbar-custom .nav-links.open {
    transform: translateX(0);
  }
  .navbar-custom .nav-links a {
    font-size: 1.2rem;
    padding: 14px 32px;
  }
  .navbar-custom .nav-links a.btn-nav-contact {
    margin-left: 0;
    margin-top: 12px;
  }
}

/* ---- 页脚 ---- */
.footer-custom {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: 80px 0 0;
}
.footer-custom .footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}
.footer-custom .footer-col h4 {
  color: var(--color-text-primary);
  font-family: var(--font-heading);
  font-size: 1.15rem;
  margin-bottom: 20px;
  position: relative;
}
.footer-custom .footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 32px;
  height: 2px;
  background: var(--color-gradient-cyan);
}
.footer-custom .footer-col p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: 8px;
}
.footer-custom .footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-custom .footer-col ul li {
  margin-bottom: 10px;
}
.footer-custom .footer-col ul li a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}
.footer-custom .footer-col ul li a:hover {
  color: var(--color-accent-cyan);
  padding-left: 4px;
}
.footer-custom .footer-col .footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}
.footer-custom .footer-col .footer-contact-item i {
  color: var(--color-accent-cyan);
  margin-top: 4px;
  width: 16px;
  text-align: center;
}
.footer-custom .footer-bottom {
  max-width: 1280px;
  margin: 48px auto 0;
  padding: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-custom .footer-bottom p {
  color: var(--color-text-muted);
  font-size: 0.8rem;
  margin: 0;
}
.footer-custom .footer-social {
  display: flex;
  gap: 12px;
}
.footer-custom .footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}
.footer-custom .footer-social a:hover {
  border-color: var(--color-accent-cyan);
  color: var(--color-accent-cyan);
  box-shadow: var(--shadow-glow-cyan);
}

@media (max-width: 768px) {
  .footer-custom .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}
@media (max-width: 480px) {
  .footer-custom .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-custom .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ---- 通用的区块样式 ---- */
.section-block {
  padding: 100px 0;
  position: relative;
}
.section-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-header .section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-accent-cyan);
  margin-bottom: 12px;
  padding: 6px 16px;
  border: 1px solid var(--color-border);
  border-radius: 50px;
  background: var(--color-accent-cyan-dim);
}
.section-header h2 {
  font-size: 2.6rem;
  color: var(--color-text-primary);
  margin-bottom: 16px;
  font-family: var(--font-heading);
}
.section-header p {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .section-block {
    padding: 60px 0;
  }
  .section-header h2 {
    font-size: 2rem;
  }
  .section-header {
    margin-bottom: 40px;
  }
}

/* ---- 按钮 ---- */
.btn-custom {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  letter-spacing: 0.3px;
  text-decoration: none;
}
.btn-custom-primary {
  background: var(--color-gradient-cyan);
  color: var(--color-bg-primary);
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.2);
}
.btn-custom-primary:hover {
  box-shadow: var(--shadow-glow-cyan);
  transform: translateY(-2px);
  color: var(--color-bg-primary);
}
.btn-custom-outline {
  background: transparent;
  color: var(--color-accent-cyan);
  border: 1.5px solid var(--color-accent-cyan);
}
.btn-custom-outline:hover {
  background: var(--color-accent-cyan);
  color: var(--color-bg-primary);
  box-shadow: var(--shadow-glow-cyan);
}
.btn-custom-gold {
  background: var(--color-gradient-gold);
  color: var(--color-bg-primary);
  box-shadow: 0 4px 20px rgba(240, 192, 96, 0.2);
}
.btn-custom-gold:hover {
  box-shadow: var(--shadow-glow-gold);
  transform: translateY(-2px);
  color: var(--color-bg-primary);
}

/* ---- 卡片 ---- */
.card-custom {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}
.card-custom::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-gradient-cyan);
  opacity: 0;
  transition: opacity var(--transition-normal);
}
.card-custom:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}
.card-custom:hover::before {
  opacity: 1;
}
.card-custom .card-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: var(--color-accent-cyan-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-accent-cyan);
  margin-bottom: 20px;
  transition: all var(--transition-normal);
}
.card-custom:hover .card-icon {
  background: var(--color-accent-cyan);
  color: var(--color-bg-primary);
}
.card-custom h3 {
  font-size: 1.2rem;
  color: var(--color-text-primary);
  margin-bottom: 10px;
  font-family: var(--font-heading);
}
.card-custom p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.6;
}

/* ---- Hero 通用样式 ---- */
.page-hero {
  position: relative;
  min-height: 55vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 120px 24px 80px;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(0, 212, 255, 0.08) 0%, transparent 60%);
  pointer-events: none;
}
.page-hero .hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}
.page-hero h1 {
  font-size: 3.2rem;
  color: var(--color-text-primary);
  margin-bottom: 16px;
  font-family: var(--font-heading);
}
.page-hero p {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}
.page-hero .hero-breadcrumb {
  margin-bottom: 20px;
  font-size: 0.85rem;
  color: var(--color-accent-cyan);
  letter-spacing: 1px;
  text-transform: uppercase;
}

@media (max-width: 768px) {
  .page-hero {
    min-height: 40vh;
    padding: 100px 24px 60px;
  }
  .page-hero h1 {
    font-size: 2.2rem;
  }
}

/* ---- 动画 ---- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 20px rgba(0, 212, 255, 0.15); }
  50% { box-shadow: 0 0 40px rgba(0, 212, 255, 0.35); }
}
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-fade-in-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.animate-fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.animate-slide-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.animate-slide-left.visible {
  opacity: 1;
  transform: translateX(0);
}
.animate-slide-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.animate-slide-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ---- 返回顶部按钮 ---- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-gradient-cyan);
  color: var(--color-bg-primary);
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-normal);
  z-index: 999;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.25);
}
.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow-cyan);
}

/* ---- 自定义 Modal ---- */
.custom-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 22, 40, 0.8);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}
.custom-modal-overlay.show {
  opacity: 1;
  visibility: visible;
}
.custom-modal {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  text-align: center;
  max-width: 460px;
  width: 90%;
  transform: scale(0.9);
  transition: transform var(--transition-normal);
  position: relative;
}
.custom-modal-overlay.show .custom-modal {
  transform: scale(1);
}
.custom-modal .modal-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-accent-cyan-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  font-size: 2rem;
  color: var(--color-accent-cyan);
  animation: pulseGlow 2s ease-in-out infinite;
}
.custom-modal h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: 10px;
  color: var(--color-text-primary);
}
.custom-modal p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 24px;
}
.custom-modal .btn-modal-close {
  background: var(--color-gradient-cyan);
  color: var(--color-bg-primary);
  border: none;
  padding: 12px 36px;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.custom-modal .btn-modal-close:hover {
  box-shadow: var(--shadow-glow-cyan);
}

/* ---- 表单样式 ---- */
.form-control-custom {
  width: 100%;
  padding: 14px 18px;
  background: var(--color-bg-input);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: 0.95rem;
  font-family: var(--font-body);
  transition: all var(--transition-fast);
  outline: none;
}
.form-control-custom:focus {
  border-color: var(--color-accent-cyan);
  box-shadow: 0 0 0 3px var(--color-accent-cyan-dim);
}
.form-control-custom::placeholder {
  color: var(--color-text-muted);
}
textarea.form-control-custom {
  min-height: 140px;
  resize: vertical;
}

/* ---- 装饰性几何背景 ---- */
.geo-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  opacity: 0.04;
}
.geo-bg .geo-line {
  position: absolute;
  border: 1px solid var(--color-accent-cyan);
}
.geo-bg .geo-line.horizontal {
  width: 100%;
  left: 0;
}
.geo-bg .geo-line.vertical {
  height: 100%;
  top: 0;
}
.geo-bg .geo-dot {
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-accent-cyan);
}
.geo-bg .geo-circle {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--color-accent-cyan);
}

/* ---- 通用辅助类 ---- */
.text-cyan { color: var(--color-accent-cyan); }
.text-gold { color: var(--color-accent-gold); }
.text-muted { color: var(--color-text-secondary); }
.bg-secondary { background: var(--color-bg-secondary); }
.bg-card { background: var(--color-bg-card); }
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }