/**
 * Certificate Company V2 Theme - Dark Tech Style
 * 证件制作公司单页主题第二版 - 深色科技风格
 * Author: MiniMax Agent
 * Version: 2.0
 * Color Scheme: Black & Gold Tech Style
 */

/* ==========================================================================
   1. CSS VARIABLES & RESET
   ========================================================================== */

:root {
  /* Color Palette - Dark Tech Theme */
  --color-primary-bg: #121212;        /* Tech Black */
  --color-secondary-bg: #1E1E1E;      /* Deep Gray */
  --color-accent: #D4AF37;            /* Prestige Gold */
  --color-accent-light: #F8DDA4;      /* Bright Gold */
  --color-text-primary: #E0E0E0;      /* Light Gray */
  --color-text-secondary: #888888;    /* Medium Gray */
  --color-border: #333333;            /* Dark Gray */
  --color-overlay: rgba(18, 18, 18, 0.95);
  
  /* Typography */
  --font-primary: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-accent: 'Montserrat', 'Poppins', var(--font-primary);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  
  /* Transitions */
  --transition-fast: 0.2s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.3);
  --shadow-gold: 0 0 20px rgba(212, 175, 55, 0.3);
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-primary-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent);
}

/* ==========================================================================
   2. TYPOGRAPHY
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-accent);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

h2 {
  font-size: 2rem;
  letter-spacing: 0.25px;
}

h3 {
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: 0.1px;
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.text-accent {
  color: var(--color-accent);
}

.text-secondary {
  color: var(--color-text-secondary);
}

/* ==========================================================================
   3. LAYOUT & CONTAINERS
   ========================================================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.section {
  padding: var(--spacing-xxl) 0;
  position: relative;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
  border-radius: 2px;
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ==========================================================================
   4. NAVIGATION
   ========================================================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--color-overlay);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: var(--color-primary-bg);
  box-shadow: var(--shadow-md);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) 0;
}

.navbar-brand {
  font-family: var(--font-accent);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 1px;
}

.navbar-nav {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.navbar-nav a {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
}

.navbar-nav a:hover,
.navbar-nav a.active {
  color: var(--color-accent);
  background: rgba(212, 175, 55, 0.1);
}

.navbar-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--spacing-xs);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .navbar-toggle {
    display: block;
  }
  
  .navbar-nav {
    position: fixed;
    top: 70px;
    right: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--color-secondary-bg);
    flex-direction: column;
    justify-content: start;
    align-items: center;
    padding-top: var(--spacing-xl);
    transition: right var(--transition-normal);
  }
  
  .navbar-nav.active {
    right: 0;
  }
  
  .navbar-nav a {
    padding: var(--spacing-md);
    font-size: 1.2rem;
    width: 200px;
    text-align: center;
  }
}

/* ==========================================================================
   5. HERO SECTION
   ========================================================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: var(--color-primary-bg);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 80%, rgba(212, 175, 55, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(212, 175, 55, 0.05) 0%, transparent 50%),
    linear-gradient(135deg, var(--color-primary-bg) 0%, var(--color-secondary-bg) 100%);
  z-index: 1;
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 0 var(--spacing-sm);
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--color-text-primary), var(--color-accent));
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
  font-size: 1.3rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-description {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-cta {
  animation: fadeInUp 1s ease-out 0.6s both;
}

/* ==========================================================================
   6. BUTTONS
   ========================================================================== */

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-family: var(--font-accent);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  text-align: center;
  cursor: pointer;
  border: none;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  color: var(--color-primary-bg);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-gold);
  color: var(--color-primary-bg);
}

.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn-secondary:hover {
  background: var(--color-accent);
  color: var(--color-primary-bg);
  transform: translateY(-2px);
}

.btn-large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1.1rem;
}

/* ==========================================================================
   7. CARDS
   ========================================================================== */

.card {
  background: var(--color-secondary-bg);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  border: 1px solid transparent;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.card:hover::before {
  opacity: 1;
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.card-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-accent);
}

.card-description {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   8. SERVICES SECTION
   ========================================================================== */

.services {
  background: var(--color-secondary-bg);
  position: relative;
}

.services::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 70% 30%, rgba(212, 175, 55, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

.service-card {
  text-align: center;
}

.service-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--color-primary-bg);
  box-shadow: var(--shadow-md);
}

/* ==========================================================================
   9. PROCESS SECTION
   ========================================================================== */

.process-timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.process-timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--color-accent), var(--color-accent-light));
  transform: translateX(-50%);
}

.process-step {
  position: relative;
  margin-bottom: var(--spacing-xl);
  display: flex;
  align-items: center;
}

.process-step:nth-child(even) {
  flex-direction: row-reverse;
}

.process-step:nth-child(even) .process-content {
  text-align: right;
}

.process-number {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--color-primary-bg);
  box-shadow: var(--shadow-md);
  position: relative;
  z-index: 2;
  margin: 0 var(--spacing-lg);
}

.process-content {
  flex: 1;
  background: var(--color-secondary-bg);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

/* ==========================================================================
   10. CONTACT SECTION
   ========================================================================== */

.contact {
  background: var(--color-primary-bg);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: start;
}

.contact-info {
  background: var(--color-secondary-bg);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.contact-item {
  display: flex;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: var(--spacing-md);
  color: var(--color-primary-bg);
}

.contact-form {
  background: var(--color-secondary-bg);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--color-text-primary);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm);
  background: var(--color-primary-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.3);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* ==========================================================================
   11. FOOTER
   ========================================================================== */

.footer {
  background: var(--color-secondary-bg);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
  text-align: center;
}

.footer-content {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.footer-links {
  margin-top: var(--spacing-sm);
}

.footer-links a {
  margin: 0 var(--spacing-sm);
  color: var(--color-accent);
}

/* ==========================================================================
   12. ANIMATIONS
   ========================================================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.fade-in-up {
  animation: fadeInUp 0.8s ease-out forwards;
}

.fade-in {
  animation: fadeIn 0.8s ease-out forwards;
}

/* ==========================================================================
   13. RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 992px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .process-timeline::before {
    left: 30px;
  }
  
  .process-step {
    flex-direction: row !important;
    padding-left: var(--spacing-xl);
  }
  
  .process-step .process-content {
    text-align: left !important;
  }
  
  .process-number {
    position: absolute;
    left: 0;
    margin: 0;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-xxl: 3rem;
    --spacing-xl: 2rem;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 1.8rem;
  }
  
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  .contact-info,
  .contact-form {
    padding: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .card {
    padding: var(--spacing-md);
  }
  
  .btn {
    padding: var(--spacing-sm) var(--spacing-md);
  }
}

/* ==========================================================================
   14. ABOUT SECTION
   ========================================================================== */

.about-section {
  background: var(--color-secondary-bg);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  align-items: center;
}

.about-text {
  padding: var(--spacing-lg);
}

.about-text .section-title {
  text-align: left;
  margin-bottom: var(--spacing-lg);
  color: var(--color-accent);
}

.about-description {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xl);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 屏幕宽度 ≥760px 时，限制最多 3 行 */
@media (min-width: 760px) {
  .about-description {
      -webkit-line-clamp: 3; /* 限制 3 行 */
  }
  .feature-text p {
      /* -webkit-line-clamp: 1;  */
  }
}

/* 屏幕宽度 <760px 时，不限制行数 */
@media (max-width: 759px) {
  .about-description,.feature-text p {
      -webkit-line-clamp: initial; /* 恢复默认（不限制） */
  }
}


.about-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: rgba(212, 175, 55, 0.05);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-accent);
  transition: all var(--transition-normal);
}

.feature-item:hover {
  background: rgba(212, 175, 55, 0.1);
  transform: translateX(10px);
}

.feature-icon {
  font-size: 1.5rem;
  color: var(--color-accent);
  min-width: 50px;
  text-align: center;
}

.feature-text h4 {
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
}

.feature-text p {
  color: var(--color-text-secondary);
  margin: 0;
  font-size: 0.9rem;
}

.about-image {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-lg);
}

.about-image img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--color-accent);
}

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

/* About Section Responsive */
@media (max-width: 992px) {
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    text-align: center;
  }
  
  .about-text .section-title {
    text-align: center;
  }
  
  .feature-item:hover {
    transform: translateY(-5px);
  }
}

@media (max-width: 768px) {
  .about-text {
    padding: var(--spacing-md);
  }
  
  .feature-item {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-sm);
  }
  
  .feature-icon {
    min-width: auto;
  }
}

/* ==========================================================================
   15. UTILITY CLASSES
   ========================================================================== */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.hidden { display: none; }
.visible { display: block; }

/* ==========================================================================
   16. SCROLLBAR STYLING
   ========================================================================== */

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-primary-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-accent);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent-light);
}

/* ==========================================================================
   17. SELECTION STYLING
   ========================================================================== */

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

::-moz-selection {
  background: var(--color-accent);
  color: var(--color-primary-bg);
}
.erx-wx-box h5{
  color:#121212 !important
}