/* ============================================
   黑桃传媒MCN机构官网 - 主样式表
   视觉风格：现代商务 + 创意潮酷
   ============================================ */

/* CSS Variables */
:root {
  --color-primary: #1A1A1A;
  --color-accent-pink: #FF3366;
  --color-accent-blue: #00E5FF;
  --color-bg-white: #FFFFFF;
  --color-bg-light: #FAFAFA;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-muted: #999999;
  --color-border: #E5E5E5;
  --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.15);
  --shadow-glow-pink: 0 0 20px rgba(255,51,102,0.3);
  --shadow-glow-blue: 0 0 20px rgba(0,229,255,0.3);
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  --max-width: 1200px;
  --header-height: 72px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg-white);
  line-height: 1.8;
  overflow-x: hidden;
}

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-pink);
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-primary);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
  line-height: 1.8;
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ============================================
   Header & Navigation
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(12px);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-accent-pink), var(--color-accent-blue));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  color: #fff;
  font-size: 1.2rem;
}

.site-logo .logo-text {
  color: #fff;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.main-nav a {
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent-pink), var(--color-accent-blue));
  transition: width var(--transition-normal);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.main-nav a:hover {
  color: #fff;
}

.nav-cta {
  background: linear-gradient(135deg, var(--color-accent-pink), #FF6B8A);
  color: #fff !important;
  padding: 0.5rem 1.25rem !important;
  border-radius: var(--radius-xl);
  font-weight: 600 !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-pink);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.5rem;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: #fff;
  transition: all var(--transition-fast);
}

/* ============================================
   Hero Section
   ============================================ */
.hero-section {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-primary);
}

.hero-video-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(26,26,26,0.8) 0%, rgba(26,26,26,0.4) 50%, rgba(255,51,102,0.1) 100%);
}

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

.hero-content h1 {
  color: #fff;
  font-size: 3.5rem;
  font-weight: 900;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.hero-content h1 .accent-pink {
  color: var(--color-accent-pink);
}

.hero-content h1 .accent-blue {
  color: var(--color-accent-blue);
}

.hero-content p {
  color: rgba(255,255,255,0.8);
  font-size: 1.2rem;
  margin-bottom: 2.5rem;
}

.hero-cta-group {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-xl);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent-pink), #FF6B8A);
  color: #fff;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow-pink);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.4);
}

.btn-secondary:hover {
  border-color: var(--color-accent-blue);
  color: var(--color-accent-blue);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow-blue);
}

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

.btn-outline:hover {
  background: var(--color-accent-pink);
  color: #fff;
  transform: translateY(-3px);
}

/* ============================================
   Data Stats Section
   ============================================ */
.stats-section {
  padding: var(--spacing-lg) 0;
  background: var(--color-primary);
  position: relative;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  text-align: center;
}

.stat-item {
  padding: var(--spacing-md);
}

.stat-number {
  font-size: 3rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--color-accent-pink), var(--color-accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
}

.stat-label {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
}

/* ============================================
   Section Styles
   ============================================ */
.section {
  padding: var(--spacing-xl) 0;
}

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

.section-bg-dark {
  background: var(--color-primary);
  color: #fff;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-header h2 {
  margin-bottom: 1rem;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent-pink), var(--color-accent-blue));
  border-radius: 2px;
}

.section-header p {
  color: var(--color-text-light);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 1rem auto 0;
}

.section-bg-dark .section-header h2 {
  color: #fff;
}

.section-bg-dark .section-header p {
  color: rgba(255,255,255,0.7);
}

/* ============================================
   KOL Showcase Cards
   ============================================ */
.kol-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.kol-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
}

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

.kol-card-image {
  position: relative;
  height: 320px;
  overflow: hidden;
}

.kol-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.kol-card:hover .kol-card-image img {
  transform: scale(1.05);
}

.kol-card-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--color-accent-pink);
  color: #fff;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-xl);
  font-size: 0.75rem;
  font-weight: 600;
}

.kol-card-info {
  padding: 1.5rem;
}

.kol-card-info h4 {
  margin-bottom: 0.5rem;
}

.kol-card-info .kol-category {
  color: var(--color-accent-pink);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.kol-card-stats {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.kol-card-stats span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* ============================================
   Brand Wall
   ============================================ */
.brand-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--spacing-md);
  align-items: center;
  justify-items: center;
}

.brand-item {
  padding: 1.5rem;
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  height: 80px;
  width: 100%;
  transition: all var(--transition-normal);
  font-weight: 700;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.brand-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

/* ============================================
   Case Study Cards
   ============================================ */
.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-md);
}

.case-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.case-card-image {
  height: 220px;
  overflow: hidden;
  position: relative;
}

.case-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-card-roi {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(26,26,26,0.9);
  color: var(--color-accent-blue);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.9rem;
}

.case-card-body {
  padding: 1.5rem;
}

.case-card-body h4 {
  margin-bottom: 0.75rem;
}

.case-card-body p {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

.case-card-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.case-card-tags span {
  background: var(--color-bg-light);
  color: var(--color-text-muted);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-xl);
  font-size: 0.75rem;
}

/* ============================================
   Services Section
   ============================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--spacing-md);
}

.service-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent-pink), var(--color-accent-blue));
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.service-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(255,51,102,0.1), rgba(0,229,255,0.1));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.service-card h4 {
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
  padding: var(--spacing-xl) 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, #2D2D2D 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,51,102,0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -50%;
  left: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,229,255,0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  position: relative;
  z-index: 2;
}

.cta-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 3rem;
  text-align: center;
  transition: all var(--transition-normal);
}

.cta-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.2);
  transform: translateY(-4px);
}

.cta-card h3 {
  color: #fff;
  margin-bottom: 1rem;
}

.cta-card p {
  color: rgba(255,255,255,0.7);
  margin-bottom: 2rem;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
  background: #111111;
  padding: var(--spacing-lg) 0 var(--spacing-md);
  color: rgba(255,255,255,0.7);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-brand p {
  margin-top: 1rem;
  font-size: 0.9rem;
  line-height: 1.8;
}

.footer-links h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 1.25rem;
}

.footer-links ul li {
  margin-bottom: 0.75rem;
}

.footer-links ul li a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

.footer-links ul li a:hover {
  color: var(--color-accent-pink);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
}

.footer-bottom a {
  color: rgba(255,255,255,0.5);
}

.footer-bottom a:hover {
  color: var(--color-accent-pink);
}

/* ============================================
   Breadcrumb
   ============================================ */
.breadcrumb {
  padding: calc(var(--header-height) + 2rem) 0 1rem;
  background: var(--color-bg-light);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.breadcrumb-list a {
  color: var(--color-text-light);
}

.breadcrumb-list a:hover {
  color: var(--color-accent-pink);
}

.breadcrumb-list .separator {
  color: var(--color-text-muted);
}

/* ============================================
   Page Header (Inner Pages)
   ============================================ */
.page-header {
  padding: calc(var(--header-height) + 4rem) 0 3rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, #2D2D2D 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,51,102,0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.page-header h1 {
  color: #fff;
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.page-header p {
  color: rgba(255,255,255,0.7);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   Filter Bar (KOL Matrix)
   ============================================ */
.filter-bar {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-md);
  justify-content: center;
}

.filter-btn {
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  font-size: 0.85rem;
  cursor: pointer;
  background: var(--color-bg-white);
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-accent-pink);
  color: #fff;
  border-color: var(--color-accent-pink);
}

/* ============================================
   Form Styles
   ============================================ */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: var(--font-body);
  transition: border-color var(--transition-fast);
  background: var(--color-bg-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent-pink);
  box-shadow: 0 0 0 3px rgba(255,51,102,0.1);
}

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

/* ============================================
   Data Dashboard
   ============================================ */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.5rem;
}

.dashboard-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
}

.dashboard-card .dash-value {
  font-size: 2rem;
  font-weight: 900;
  font-family: var(--font-mono);
  background: linear-gradient(135deg, var(--color-accent-pink), var(--color-accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.dashboard-card .dash-label {
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  margin-top: 0.5rem;
}

/* ============================================
   Search Page
   ============================================ */
.search-container {
  max-width: 700px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
}

.search-box {
  display: flex;
  gap: 0.75rem;
  margin-bottom: var(--spacing-md);
}

.search-box input {
  flex: 1;
  padding: 1rem 1.5rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  font-size: 1rem;
}

.search-box input:focus {
  border-color: var(--color-accent-pink);
  outline: none;
}

.search-box button {
  padding: 1rem 2rem;
  background: var(--color-accent-pink);
  color: #fff;
  border: none;
  border-radius: var(--radius-xl);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}

.search-results .result-item {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.search-results .result-item h4 a {
  color: var(--color-primary);
}

.search-results .result-item h4 a:hover {
  color: var(--color-accent-pink);
}

.search-results .result-item p {
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

.search-results .result-item .result-url {
  color: var(--color-accent-blue);
  font-size: 0.8rem;
  margin-top: 0.25rem;
}

/* ============================================
   404 Page
   ============================================ */
.error-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-md);
  background: var(--color-primary);
}

.error-page h1 {
  font-size: 8rem;
  background: linear-gradient(135deg, var(--color-accent-pink), var(--color-accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.error-page h2 {
  color: #fff;
  margin: 1rem 0;
}

.error-page p {
  color: rgba(255,255,255,0.7);
  margin-bottom: 2rem;
}

/* ============================================
   Timeline
   ============================================ */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent-pink), var(--color-accent-blue));
}

.timeline-item {
  position: relative;
  padding-bottom: 2.5rem;
  padding-left: 2rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  background: var(--color-accent-pink);
  border-radius: 50%;
  transform: translateX(-5px);
}

.timeline-item .timeline-date {
  color: var(--color-accent-pink);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.timeline-item h4 {
  margin-bottom: 0.5rem;
}

.timeline-item p {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

/* ============================================
   FAQ Accordion
   ============================================ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
}

.faq-question {
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  background: var(--color-bg-white);
  transition: background var(--transition-fast);
}

.faq-question:hover {
  background: var(--color-bg-light);
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--color-accent-pink);
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-question::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.faq-item.active .faq-answer {
  padding: 0 1.5rem 1.25rem;
  max-height: 500px;
}

/* ============================================
   Content Styles
   ============================================ */
.content-area {
  padding: var(--spacing-lg) 0;
}

.content-area h2 {
  margin-bottom: 1.5rem;
}

.content-area h3 {
  margin: 2rem 0 1rem;
}

.content-area p {
  margin-bottom: 1.25rem;
  line-height: 1.9;
}

.content-area ul {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.content-area ul li {
  position: relative;
  padding-left: 1rem;
  margin-bottom: 0.75rem;
  line-height: 1.8;
}

.content-area ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7rem;
  width: 6px;
  height: 6px;
  background: var(--color-accent-pink);
  border-radius: 50%;
}

/* ============================================
   App Download Page
   ============================================ */
.app-hero {
  padding: calc(var(--header-height) + 4rem) 0 var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-primary) 0%, #2D2D2D 100%);
  text-align: center;
}

.app-hero h1 {
  color: #fff;
  margin-bottom: 1rem;
}

.app-hero p {
  color: rgba(255,255,255,0.7);
  max-width: 600px;
  margin: 0 auto 2rem;
}

.app-download-btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.download-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.5rem;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-md);
  color: #fff;
  transition: all var(--transition-normal);
}

.download-btn:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--color-accent-pink);
  color: #fff;
  transform: translateY(-3px);
}

.download-btn .btn-label {
  font-size: 0.75rem;
  opacity: 0.7;
}

.download-btn .btn-store {
  font-size: 1.1rem;
  font-weight: 600;
}

/* ============================================
   Parallax Effect
   ============================================ */
.parallax-section {
  position: relative;
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  padding: var(--spacing-xl) 0;
}

.parallax-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(26,26,26,0.85);
}

.parallax-content {
  position: relative;
  z-index: 2;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
  }
  
  .cta-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  
  .main-nav {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(26,26,26,0.98);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
  }
  
  .main-nav.active {
    display: flex;
  }
  
  .menu-toggle {
    display: flex;
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
  }
  
  .stat-number {
    font-size: 2rem;
  }
  
  .case-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .page-header h1 {
    font-size: 2rem;
  }
  
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.75rem; }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 2rem;
  }
  
  .hero-cta-group {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .filter-bar {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 0.5rem;
  }
  
  .filter-btn {
    white-space: nowrap;
  }
}

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

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* CountUp Animation */
.count-up {
  display: inline-block;
}

/* Smooth scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.6);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-10px); }
  60% { transform: translateX(-50%) translateY(-5px); }
}