/* ============================================
   USDT冷钱包 - 全局样式表
   风格：深空蓝至极光紫渐变 + 磨砂玻璃
   ============================================ */

/* === CSS Variables === */
:root {
  --primary-bg: #0a0e27;
  --secondary-bg: #111640;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-cyan: #06b6d4;
  --accent-green: #10b981;
  --accent-orange: #f59e0b;
  --accent-red: #ef4444;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --glass-bg: rgba(17, 22, 64, 0.6);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-highlight: rgba(255, 255, 255, 0.12);
  --gradient-main: linear-gradient(135deg, #0a0e27 0%, #1a1050 50%, #2d1b69 100%);
  --gradient-card: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
  --gradient-accent: linear-gradient(135deg, #3b82f6, #8b5cf6);
  --gradient-green: linear-gradient(135deg, #10b981, #06b6d4);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --font-main: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

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

body {
  font-family: var(--font-main);
  background: var(--gradient-main);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* === Grid Background === */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* === Particle Effect === */
.particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: rgba(59, 130, 246, 0.4);
  border-radius: 50%;
  animation: floatParticle 15s infinite linear;
}

.particle:nth-child(2n) {
  background: rgba(139, 92, 246, 0.3);
  animation-duration: 20s;
}

.particle:nth-child(3n) {
  background: rgba(6, 182, 212, 0.3);
  animation-duration: 25s;
  width: 2px;
  height: 2px;
}

@keyframes floatParticle {
  0% { transform: translateY(100vh) translateX(0); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-10vh) translateX(100px); opacity: 0; }
}

/* === Container === */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
}

h1 { font-size: 2.5rem; margin-bottom: 1rem; }
h2 { font-size: 2rem; margin-bottom: 0.8rem; }
h3 { font-size: 1.5rem; margin-bottom: 0.6rem; }
h4 { font-size: 1.25rem; margin-bottom: 0.5rem; }
h5 { font-size: 1.1rem; margin-bottom: 0.4rem; }
h6 { font-size: 1rem; margin-bottom: 0.3rem; }

p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.8;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* === Header / Navigation === */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 14, 39, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: all 0.3s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-accent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 8px;
}

.nav-menu a {
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: all 0.3s ease;
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--text-primary);
  background: rgba(59, 130, 246, 0.1);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all 0.3s ease;
  border-radius: 2px;
}

/* === Breadcrumb === */
.breadcrumb {
  padding: 100px 0 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

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

.breadcrumb span {
  margin: 0 8px;
  color: var(--text-muted);
}

/* === Hero Section === */
.hero {
  padding: 140px 0 80px;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-block;
  padding: 6px 20px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--accent-blue);
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 3rem;
  background: linear-gradient(135deg, #fff 0%, #a5b4fc 50%, #8b5cf6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.hero .container {
  display: flex;
  align-items: center;
  gap: 40px;
  text-align: left;
}

.hero-content {
  flex: 1;
  min-width: 0;
}

.hero-visual {
  flex: 1;
  min-width: 0;
  max-width: 480px;
}

.hero-img {
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: contain;
  border-radius: var(--radius-lg);
  filter: drop-shadow(0 20px 40px rgba(59, 130, 246, 0.2));
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--glass-highlight);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--accent-blue);
  color: var(--text-primary);
}

/* === Glass Card === */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all 0.3s ease;
}

.glass-card:hover {
  border-color: rgba(59, 130, 246, 0.2);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

/* === Section Styles === */
.section {
  padding: 80px 0;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-header h2 {
  font-size: 2rem;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 50px;
  font-size: 0.8rem;
  color: var(--accent-blue);
  margin-bottom: 12px;
  font-weight: 600;
}

/* === Dashboard (CSS Animation) === */
.dashboard {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.dash-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.dash-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-accent);
}

.dash-value {
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}

.dash-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.dash-change {
  font-size: 0.8rem;
  margin-top: 8px;
  font-weight: 600;
}

.dash-change.up { color: var(--accent-green); }
.dash-change.down { color: var(--accent-red); }

@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.dash-card {
  animation: countUp 0.6s ease forwards;
}

.dash-card:nth-child(2) { animation-delay: 0.1s; }
.dash-card:nth-child(3) { animation-delay: 0.2s; }
.dash-card:nth-child(4) { animation-delay: 0.3s; }

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

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

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* === News / Article Cards === */
.news-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.news-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: row;
}

.news-card:hover {
  border-color: rgba(59, 130, 246, 0.2);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.news-card .news-card-img {
  width: 280px;
  min-width: 280px;
  height: 200px;
  object-fit: cover;
  display: block;
  flex-shrink: 0;
}

.news-card .news-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.news-card-tag {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 50px;
  font-size: 0.75rem;
  color: var(--accent-blue);
  margin-bottom: 10px;
  width: fit-content;
}

.news-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
  line-height: 1.5;
}

.news-card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

.news-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* === Video Card === */
.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.video-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: all 0.3s ease;
}

.video-card:hover {
  border-color: rgba(59, 130, 246, 0.2);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.video-thumb,
.video-card-thumb {
  position: relative;
  overflow: hidden;
  height: 200px;
}

.video-thumb img,
.video-card-thumb {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.video-card:hover .video-thumb img,
.video-card:hover .video-card-thumb {
  transform: scale(1.05);
}

.video-play,
.video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background: rgba(59, 130, 246, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #fff;
  opacity: 0.8;
  transition: opacity 0.3s ease;
}

.video-card:hover .video-play,
.video-card:hover .video-play-btn {
  opacity: 1;
}

.video-info,
.video-card-info {
  padding: 16px;
}

.video-info h5,
.video-card-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.video-duration,
.video-card-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.8);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  color: #fff;
}

/* === Expert / Review / Community Grids === */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

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

/* === Expert Cards === */
.expert-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  transition: all 0.3s ease;
}

.expert-card:hover {
  border-color: rgba(139, 92, 246, 0.3);
  transform: translateY(-4px);
}

.expert-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--gradient-accent);
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: #fff;
  font-weight: 700;
}

.expert-name {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.expert-title {
  font-size: 0.85rem;
  color: var(--accent-blue);
  margin-bottom: 12px;
}

.expert-quote {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-style: italic;
  line-height: 1.7;
}

/* === Testimonial / Review Cards === */
.review-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all 0.3s ease;
}

.review-card:hover {
  border-color: rgba(16, 185, 129, 0.3);
}

.review-stars {
  color: var(--accent-orange);
  font-size: 0.9rem;
  margin-bottom: 12px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: #fff;
  font-weight: 700;
}

.review-author-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.review-author-info {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* === Community / Share Cards === */
.community-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: all 0.3s ease;
}

.community-card:hover {
  border-color: rgba(6, 182, 212, 0.3);
}

.community-user {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.community-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: #fff;
  font-weight: 700;
}

.community-username {
  font-size: 0.9rem;
  font-weight: 600;
}

.community-time {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.community-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 12px;
}

.community-stats {
  display: flex;
  gap: 20px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* === Search Box === */
.search-box {
  position: relative;
  max-width: 500px;
  margin: 0 auto 40px;
}

.search-input {
  width: 100%;
  padding: 14px 50px 14px 20px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
  transition: all 0.3s ease;
  font-family: var(--font-main);
}

.search-input:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.search-input::placeholder {
  color: var(--text-muted);
}

.search-btn {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  background: var(--gradient-accent);
  border: none;
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.search-result {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background: var(--secondary-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-top: 8px;
  display: none;
  z-index: 100;
}

.search-result.active {
  display: block;
}

.search-loading {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--accent-blue);
  font-size: 0.9rem;
}

.search-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(59, 130, 246, 0.2);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* === Step Guide === */
.step-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.step-tab {
  padding: 10px 24px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.9rem;
  font-weight: 500;
  font-family: var(--font-main);
}

.step-tab.active,
.step-tab:hover {
  background: rgba(59, 130, 246, 0.15);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.step-content {
  display: none;
}

.step-content.active {
  display: block;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === Market Ticker === */
.ticker-bar {
  background: rgba(10, 14, 39, 0.9);
  border-bottom: 1px solid var(--glass-border);
  padding: 8px 0;
  overflow: hidden;
  position: relative;
}

.ticker-track {
  display: flex;
  gap: 40px;
  animation: tickerScroll 30s linear infinite;
  white-space: nowrap;
}

.ticker-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
}

.ticker-symbol {
  font-weight: 700;
  color: var(--text-primary);
}

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

.ticker-change {
  font-weight: 600;
}

.ticker-change.up { color: var(--accent-green); }
.ticker-change.down { color: var(--accent-red); }

@keyframes tickerScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* === Content Page Styles === */
.page-hero {
  padding: 120px 0 40px;
  text-align: center;
}

.page-hero h1 {
  font-size: 2.2rem;
  background: linear-gradient(135deg, #fff 0%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.content-section {
  padding: 40px 0;
}

.article-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
}

.article-content h2 {
  margin-top: 32px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--glass-border);
}

.article-content h3 {
  margin-top: 24px;
  margin-bottom: 12px;
}

.article-content p {
  margin-bottom: 16px;
  line-height: 1.8;
}

.article-content ul,
.article-content ol {
  margin: 16px 0;
  padding-left: 24px;
  color: var(--text-secondary);
}

.article-content li {
  margin-bottom: 8px;
  line-height: 1.7;
}

.article-content img {
  max-width: 100%;
  border-radius: var(--radius-md);
  margin: 20px 0;
}

.article-content blockquote {
  border-left: 3px solid var(--accent-blue);
  padding: 16px 20px;
  margin: 20px 0;
  background: rgba(59, 130, 246, 0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* === Info Box === */
.info-box {
  padding: 20px 24px;
  border-radius: var(--radius-md);
  margin: 20px 0;
  border-left: 4px solid;
}

.info-box.warning {
  background: rgba(245, 158, 11, 0.1);
  border-color: var(--accent-orange);
}

.info-box.success {
  background: rgba(16, 185, 129, 0.1);
  border-color: var(--accent-green);
}

.info-box.danger {
  background: rgba(239, 68, 68, 0.1);
  border-color: var(--accent-red);
}

.info-box.info {
  background: rgba(59, 130, 246, 0.1);
  border-color: var(--accent-blue);
}

/* === Feature List === */
.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 20px 0;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
}

.feature-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: var(--gradient-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.feature-item h5 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.feature-item p {
  font-size: 0.85rem;
  margin-bottom: 0;
}

/* === Footer === */
.site-footer {
  background: rgba(5, 7, 18, 0.8);
  border-top: 1px solid var(--glass-border);
  padding: 60px 0 30px;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 300px;
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 1rem;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--accent-blue);
}

.footer-bottom {
  border-top: 1px solid var(--glass-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copyright {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-update {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* === Lazy Load === */
.lazy-img {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.lazy-img.loaded {
  opacity: 1;
}

/* === Animations === */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === Pulse Animation for Dashboard === */
.pulse {
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* === Scrollbar === */
::-webkit-scrollbar {
  width: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: rgba(59, 130, 246, 0.3);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(59, 130, 246, 0.5);
}

/* === Forum Styles === */
.forum-post {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 20px;
  transition: all 0.3s ease;
}

.forum-post:hover {
  border-color: rgba(59, 130, 246, 0.2);
}

.forum-post-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.forum-post-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.forum-post-tag {
  padding: 3px 10px;
  background: rgba(139, 92, 246, 0.1);
  border-radius: 50px;
  font-size: 0.75rem;
  color: var(--accent-purple);
}

.forum-post-body {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.forum-post-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.forum-post-stats {
  display: flex;
  gap: 16px;
}

/* === Responsive === */
@media (max-width: 1024px) {
  .dashboard { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  html { font-size: 15px; }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 20px;
    border-bottom: 1px solid var(--glass-border);
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-menu a {
    padding: 12px 16px;
    width: 100%;
  }

  .nav-toggle {
    display: flex;
  }

  .hero { padding: 120px 0 60px; }
  .hero .container { flex-direction: column; text-align: center; }
  .hero-visual { max-width: 100%; }
  .hero-img { max-height: 300px; }
  .hero-actions { justify-content: center; }
  .hero h1 { font-size: 2rem; }
  .hero-subtitle { font-size: 1rem; }

  .news-card { flex-direction: column; }
  .news-card .news-card-img { width: 100%; min-width: 100%; height: 180px; }

  .video-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .community-grid { grid-template-columns: 1fr; }

  .dashboard { grid-template-columns: 1fr 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }

  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .feature-list { grid-template-columns: 1fr; }

  .article-content { padding: 24px; }

  .page-hero h1 { font-size: 1.8rem; }

  .section { padding: 50px 0; }

  .step-tabs { gap: 8px; }
  .step-tab { padding: 8px 16px; font-size: 0.85rem; }

  .hero-buttons, .hero-actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; max-width: 300px; justify-content: center; }
}

@media (max-width: 480px) {
  html { font-size: 14px; }
  .dashboard { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.7rem; }
  .container { padding: 0 16px; }
  .header-inner { padding: 10px 16px; }
}