/* ============================================
   Trust冷钱包 - 全站样式表
   深空蓝到极光紫渐变色系 + 磨砂玻璃效果
   ============================================ */

/* === 基础重置与变量 === */
:root {
  --deep-blue: #0a0e27;
  --space-blue: #0f1642;
  --aurora-purple: #6c3ce0;
  --aurora-light: #a855f7;
  --neon-green: #00ff88;
  --neon-cyan: #00d4ff;
  --text-primary: #e8eaf6;
  --text-secondary: #9fa8da;
  --glass-bg: rgba(15, 22, 66, 0.6);
  --glass-border: rgba(168, 85, 247, 0.2);
  --card-hover: rgba(108, 60, 224, 0.15);
  --gradient-main: linear-gradient(135deg, #0a0e27 0%, #1a1050 50%, #2d1b69 100%);
  --gradient-card: linear-gradient(135deg, rgba(15, 22, 66, 0.8), rgba(45, 27, 105, 0.6));
  --gradient-btn: linear-gradient(135deg, #6c3ce0, #00d4ff);
  --gradient-text: linear-gradient(90deg, #00d4ff, #a855f7);
  --radius: 16px;
  --radius-sm: 8px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --transition: all 0.3s ease;
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: var(--gradient-main);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* === 粒子网格背景 === */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(108, 60, 224, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108, 60, 224, 0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 0;
  pointer-events: none;
  animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(60px, 60px); }
}

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

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--neon-cyan);
  border-radius: 50%;
  opacity: 0.3;
  animation: float 15s infinite ease-in-out;
}

.particle:nth-child(1) { left: 10%; top: 20%; animation-delay: 0s; animation-duration: 18s; }
.particle:nth-child(2) { left: 30%; top: 60%; animation-delay: 2s; animation-duration: 22s; }
.particle:nth-child(3) { left: 50%; top: 30%; animation-delay: 4s; animation-duration: 16s; }
.particle:nth-child(4) { left: 70%; top: 70%; animation-delay: 1s; animation-duration: 20s; }
.particle:nth-child(5) { left: 90%; top: 40%; animation-delay: 3s; animation-duration: 24s; }
.particle:nth-child(6) { left: 20%; top: 80%; animation-delay: 5s; animation-duration: 19s; }
.particle:nth-child(7) { left: 60%; top: 10%; animation-delay: 2.5s; animation-duration: 21s; }
.particle:nth-child(8) { left: 80%; top: 50%; animation-delay: 1.5s; animation-duration: 17s; }

@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0); opacity: 0.3; }
  25% { transform: translateY(-80px) translateX(30px); opacity: 0.6; }
  50% { transform: translateY(-40px) translateX(-20px); opacity: 0.2; }
  75% { transform: translateY(-100px) translateX(15px); opacity: 0.5; }
}

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

/* === 头部导航 === */
.header {
  position: sticky;
  top: 0;
  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);
  padding: 0;
}

.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;
  text-decoration: none;
  color: var(--text-primary);
}

.logo img {
  height: 36px;
  width: auto;
}

.logo-text {
  font-size: 1.2rem;
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

/* 导航菜单 */
.nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav a {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  transition: var(--transition);
  white-space: nowrap;
}

.nav a:hover, .nav a.active {
  color: var(--neon-cyan);
  background: rgba(0, 212, 255, 0.1);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

/* 搜索框 */
.search-bar {
  background: rgba(15, 22, 66, 0.5);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 10px 20px;
  margin: 0 auto;
  max-width: 1200px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.search-bar input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 0.95rem;
  outline: none;
}

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

.search-bar button {
  background: var(--gradient-btn);
  border: none;
  color: #fff;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
}

.search-bar button:hover {
  opacity: 0.85;
  transform: scale(1.02);
}

.search-result {
  display: none;
  padding: 15px 20px;
  color: var(--neon-cyan);
  font-size: 0.9rem;
  text-align: center;
}

/* === 面包屑 === */
.breadcrumb {
  padding: 15px 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.breadcrumb a {
  color: var(--neon-cyan);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb span {
  margin: 0 8px;
  opacity: 0.5;
}

/* === Hero 区域 === */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
}

.hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero h2 {
  font-size: 1.3rem;
  color: var(--text-secondary);
  font-weight: 400;
  margin-bottom: 30px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-btns {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-btn);
  color: #fff;
  padding: 14px 32px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(108, 60, 224, 0.4);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--neon-cyan);
  padding: 14px 32px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid var(--neon-cyan);
  transition: var(--transition);
  cursor: pointer;
}

.btn-secondary:hover {
  background: rgba(0, 212, 255, 0.1);
  transform: translateY(-2px);
}

/* === 磨砂玻璃卡片 === */
.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);
  padding: 30px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-btn);
  opacity: 0;
  transition: var(--transition);
}

.glass-card:hover {
  transform: translateY(-4px);
  border-color: rgba(168, 85, 247, 0.4);
  box-shadow: var(--shadow);
}

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

/* === 仪表盘 === */
.dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin: 40px 0;
}

.dash-item {
  text-align: center;
  padding: 25px 15px;
}

.dash-item .dash-value {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  margin-bottom: 5px;
}

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

.dash-item .dash-change {
  font-size: 0.8rem;
  margin-top: 5px;
}

.dash-change.up { color: var(--neon-green); }
.dash-change.down { color: #ff4757; }

/* 价格跳动动画 */
@keyframes priceFlicker {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.price-animate {
  animation: priceFlicker 2s infinite;
}

/* === 内容网格 === */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 25px;
  margin: 30px 0;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  margin: 30px 0;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin: 30px 0;
}

/* === 区块标题 === */
.section {
  padding: 60px 0;
}

.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 10px;
  text-align: center;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* === 新闻/文章卡片 === */
.article-card {
  padding: 25px;
}

.article-card .tag {
  display: inline-block;
  background: rgba(108, 60, 224, 0.3);
  color: var(--aurora-light);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  margin-bottom: 12px;
}

.article-card h4, .article-card h5, .article-card h6 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  line-height: 1.5;
}

.article-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.article-card .meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 15px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* === 图片卡片 === */
.img-card {
  overflow: hidden;
  padding: 0;
}

.img-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: var(--transition);
}

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

.img-card .img-content {
  padding: 20px;
}

/* === 视频卡片 === */
.video-card {
  position: relative;
  overflow: hidden;
  padding: 0;
  cursor: pointer;
}

.video-card .video-thumb {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: var(--transition);
}

.video-card .play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 60px;
  height: 60px;
  background: rgba(108, 60, 224, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.video-card .play-btn::after {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 4px;
}

.video-card:hover .play-btn {
  transform: translate(-50%, -50%) scale(1);
}

.video-card:hover .video-thumb {
  transform: scale(1.05);
  filter: brightness(0.7);
}

.video-card .video-info {
  padding: 15px 20px;
}

/* === 专家展示 === */
.expert-card {
  text-align: center;
  padding: 30px 20px;
}

.expert-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 15px;
  background: var(--gradient-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
}

.expert-card h5 {
  font-size: 1.05rem;
  margin-bottom: 5px;
}

.expert-card .expert-title {
  font-size: 0.8rem;
  color: var(--aurora-light);
  margin-bottom: 10px;
}

.expert-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* === 用户评价 === */
.review-card {
  padding: 25px;
}

.review-card .stars {
  color: #ffd700;
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.review-card .review-text {
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 15px;
  font-style: italic;
  color: var(--text-secondary);
}

.review-card .reviewer {
  display: flex;
  align-items: center;
  gap: 10px;
}

.reviewer-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 600;
  color: #fff;
}

.reviewer-info .name {
  font-size: 0.9rem;
  font-weight: 600;
}

.reviewer-info .date {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* === 分享按钮 === */
.share-bar {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 30px 0;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  text-decoration: none;
  color: #fff;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.share-btn:hover { transform: translateY(-2px); opacity: 0.9; }
.share-btn.wechat { background: #07c160; }
.share-btn.weibo { background: #e6162d; }
.share-btn.douyin { background: #161823; border: 1px solid #fe2c55; }
.share-btn.bilibili { background: #00a1d6; }

/* === 步骤条 === */
.steps {
  display: flex;
  justify-content: center;
  gap: 0;
  margin: 30px 0;
  flex-wrap: wrap;
}

.step-item {
  padding: 15px 25px;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition);
  text-align: center;
  min-width: 120px;
}

.step-item:hover, .step-item.active {
  color: var(--neon-cyan);
  border-bottom-color: var(--neon-cyan);
  background: rgba(0, 212, 255, 0.05);
}

.step-content {
  display: none;
  padding: 30px;
  animation: fadeIn 0.3s ease;
}

.step-content.active {
  display: block;
}

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

/* === SVG 安全动效 === */
.security-diagram {
  max-width: 600px;
  margin: 30px auto;
}

.security-diagram svg {
  width: 100%;
  height: auto;
}

.svg-pulse {
  animation: svgPulse 2s infinite;
}

@keyframes svgPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.svg-flow {
  animation: svgFlow 3s infinite linear;
}

@keyframes svgFlow {
  0% { stroke-dashoffset: 100; }
  100% { stroke-dashoffset: 0; }
}

/* === CSS 科技图标 === */
.tech-icon {
  width: 60px;
  height: 60px;
  position: relative;
  margin: 0 auto 15px;
}

.icon-shield {
  width: 50px;
  height: 60px;
  background: var(--gradient-btn);
  clip-path: polygon(50% 0%, 100% 20%, 100% 70%, 50% 100%, 0% 70%, 0% 20%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

.icon-shield::after {
  content: '✓';
  color: #fff;
  font-size: 1.5rem;
  font-weight: 700;
}

.icon-lock {
  width: 40px;
  height: 50px;
  border: 3px solid var(--neon-cyan);
  border-radius: 0 0 8px 8px;
  position: relative;
  margin: 15px auto 0;
}

.icon-lock::before {
  content: '';
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 20px;
  border: 3px solid var(--neon-cyan);
  border-bottom: none;
  border-radius: 12px 12px 0 0;
}

.icon-lock::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  background: var(--neon-cyan);
  border-radius: 50%;
}

.icon-chip {
  width: 50px;
  height: 50px;
  border: 2px solid var(--aurora-light);
  border-radius: 8px;
  position: relative;
  margin: 5px auto;
}

.icon-chip::before, .icon-chip::after {
  content: '';
  position: absolute;
  background: var(--aurora-light);
}

.icon-chip::before {
  width: 6px;
  height: 6px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  box-shadow:
    -12px 0 0 var(--aurora-light),
    12px 0 0 var(--aurora-light),
    0 -12px 0 var(--aurora-light),
    0 12px 0 var(--aurora-light);
}

.icon-chain {
  display: flex;
  gap: 4px;
  justify-content: center;
  align-items: center;
  margin: 15px auto;
}

.icon-chain .block {
  width: 16px;
  height: 16px;
  border: 2px solid var(--neon-green);
  border-radius: 3px;
}

.icon-chain .link {
  width: 10px;
  height: 2px;
  background: var(--neon-green);
}

/* === 页脚 === */
.footer {
  background: rgba(5, 7, 18, 0.9);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--glass-border);
  padding: 50px 0 20px;
  margin-top: 60px;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 30px;
  margin-bottom: 30px;
}

.footer-brand .logo-text {
  font-size: 1.3rem;
  margin-bottom: 10px;
  display: block;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.7;
}

.footer h6 {
  font-size: 0.95rem;
  margin-bottom: 15px;
  color: var(--text-primary);
}

.footer ul {
  list-style: none;
}

.footer ul li {
  margin-bottom: 8px;
}

.footer ul a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  transition: var(--transition);
}

.footer ul a:hover {
  color: var(--neon-cyan);
}

.footer-bottom {
  border-top: 1px solid rgba(168, 85, 247, 0.1);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* === 懒加载 === */
.lazy {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.lazy.loaded {
  opacity: 1;
}

/* === 内页内容区 === */
.page-content {
  padding: 40px 0;
}

.page-content h2 {
  font-size: 1.6rem;
  margin-bottom: 20px;
}

.page-content h3 {
  font-size: 1.3rem;
  margin: 30px 0 15px;
  color: var(--neon-cyan);
}

.page-content p {
  margin-bottom: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.page-content ul, .page-content ol {
  margin: 15px 0 15px 25px;
  color: var(--text-secondary);
}

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

/* === 三层加密图 === */
.encryption-layers {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 30px 0;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.enc-layer {
  padding: 25px;
  text-align: center;
  position: relative;
}

.enc-layer .layer-num {
  position: absolute;
  top: -10px;
  left: 20px;
  background: var(--gradient-btn);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
}

.enc-layer h5 {
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.enc-arrow {
  text-align: center;
  color: var(--aurora-light);
  font-size: 1.5rem;
  animation: arrowBounce 1.5s infinite;
}

@keyframes arrowBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* === 论坛动态 === */
.forum-post {
  padding: 20px;
  margin-bottom: 15px;
}

.forum-post .post-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.forum-post .post-author {
  display: flex;
  align-items: center;
  gap: 10px;
}

.forum-post .post-tag {
  background: rgba(0, 212, 255, 0.15);
  color: var(--neon-cyan);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
}

/* === 市场行情表 === */
.market-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
}

.market-table th {
  background: rgba(108, 60, 224, 0.2);
  padding: 12px 15px;
  text-align: left;
  font-size: 0.85rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--glass-border);
}

.market-table td {
  padding: 12px 15px;
  border-bottom: 1px solid rgba(168, 85, 247, 0.1);
  font-size: 0.9rem;
}

.market-table tr:hover {
  background: rgba(108, 60, 224, 0.1);
}

.price-up { color: var(--neon-green); }
.price-down { color: #ff4757; }

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

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

  .header-inner { padding: 10px 15px; }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 15px;
    border-bottom: 1px solid var(--glass-border);
  }

  .nav.open { display: flex; }

  .nav-toggle { display: block; }

  .hero h1 { font-size: 2rem; }
  .hero h2 { font-size: 1.1rem; }

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

  .dashboard { grid-template-columns: repeat(2, 1fr); }

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

  .steps { flex-direction: column; }
  .step-item { border-bottom: none; border-left: 3px solid transparent; text-align: left; }
  .step-item:hover, .step-item.active { border-left-color: var(--neon-cyan); }

  .hero-btns { flex-direction: column; align-items: center; }
}

@media (max-width: 480px) {
  html { font-size: 14px; }
  .hero { padding: 50px 0 40px; }
  .hero h1 { font-size: 1.7rem; }
  .container { padding: 0 15px; }
  .glass-card { padding: 20px; }
  .section { padding: 40px 0; }
  .dash-item .dash-value { font-size: 1.5rem; }
}

/* === 打印样式 === */
@media print {
  body { background: #fff; color: #333; }
  .header, .footer, .particles, .share-bar { display: none; }
  .glass-card { border: 1px solid #ddd; background: #fff; }
}