/* ============================================
   积木风（Neon Metropolis Style）主样式表
   色彩体系：午夜黑 #43A047 | 积木洋红 #E53935 | 积木青 #FDD835 | 深空蓝 #1E88E5 | 银灰 #37474F
   ============================================ */

/* --- 字体加载 --- */
@font-face {
  font-family: 'Fredoka One';
  src: url('../fonts/fredoka-one.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Nunito Sans';
  src: url('../fonts/nunito-sans-regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Nunito Sans';
  src: url('../fonts/nunito-sans-semibold.ttf') format('truetype');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Nunito Sans';
  src: url('../fonts/nunito-sans-bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* --- CSS变量 --- */
:root {
  --lego-midnight: #43A047;
  --lego-magenta: #E53935;
  --lego-cyan: #FDD835;
  --lego-deepblue: #1E88E5;
  --lego-silver: #37474F;
  --lego-midnight-rgb: 67,160,71;
  --lego-magenta-rgb: 229,57,53;
  --lego-cyan-rgb: 253,216,53;
  --lego-deepblue-rgb: 30,136,229;
  --lego-silver-rgb: 55,71,79;
  --font-heading: 'Fredoka One', 'PingFang SC', sans-serif;
  --font-body: 'Nunito Sans', 'Microsoft YaHei', sans-serif;
}

/* --- 全局重置 --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: #0d1117;
  color: var(--lego-silver);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* 电路板背景纹理 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(30,136,229,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,136,229,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* --- 排版 --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--lego-cyan);
  line-height: 1.3;
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(28px, 5vw, 52px);
  text-shadow: 0 0 20px rgba(var(--lego-cyan-rgb), 0.6), 0 0 40px rgba(var(--lego-cyan-rgb), 0.3);
}

h2 {
  font-size: clamp(22px, 3.5vw, 36px);
  text-shadow: 0 0 15px rgba(var(--lego-cyan-rgb), 0.4);
}

h3 {
  font-size: clamp(18px, 2.5vw, 28px);
}

h4 { font-size: clamp(16px, 2vw, 22px); }
h5 { font-size: clamp(15px, 1.8vw, 20px); }
h6 { font-size: clamp(14px, 1.5vw, 18px); }

p {
  font-size: clamp(14px, 1.6vw, 16px);
  margin-bottom: 1rem;
  color: #b0bec5;
}

a {
  color: var(--lego-cyan);
  text-decoration: none;
  transition: color 0.3s ease, text-shadow 0.3s ease;
}

a:hover {
  color: var(--lego-magenta);
  text-shadow: 0 0 10px rgba(var(--lego-magenta-rgb), 0.5);
}

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

/* --- 导航栏 --- */
.lego-nav-bar {
  position: relative;
  background: rgba(13, 17, 23, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--lego-magenta);
  box-shadow: 0 2px 20px rgba(var(--lego-magenta-rgb), 0.3);
  z-index: 1000;
  padding: 0 1rem;
}

.lego-nav-inner {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

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

.lego-nav-logo img {
  width: 40px;
  height: 40px;
  border-radius: 4px;
}

.lego-nav-logo-text {
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--lego-cyan);
  text-shadow: 0 0 10px rgba(var(--lego-cyan-rgb), 0.5);
}

.lego-nav-links {
  display: flex;
  list-style: none;
  gap: 0;
}

.lego-nav-links li a {
  display: block;
  padding: 20px 14px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  color: #b0bec5;
  transition: all 0.3s ease;
  position: relative;
  white-space: nowrap;
}

.lego-nav-links li a:hover,
.lego-nav-links li a.lego-nav-active {
  color: var(--lego-cyan);
  text-shadow: 0 0 10px rgba(var(--lego-cyan-rgb), 0.6);
}

.lego-nav-links li a.lego-nav-active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 2px;
  background: var(--lego-cyan);
  box-shadow: 0 0 8px rgba(var(--lego-cyan-rgb), 0.8);
  animation: lego-flicker 3s infinite;
}

/* 移动端菜单按钮 */
.lego-menu-toggle {
  display: none;
  background: none;
  border: 2px solid var(--lego-cyan);
  border-radius: 4px;
  padding: 6px 8px;
  cursor: pointer;
  flex-direction: column;
  gap: 4px;
}

.lego-menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--lego-cyan);
  box-shadow: 0 0 6px rgba(var(--lego-cyan-rgb), 0.8);
  transition: all 0.3s ease;
}

/* --- Hero区域 --- */
.lego-hero-section {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.lego-hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.lego-hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(13, 17, 23, 0.7);
  z-index: 1;
}

.lego-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  padding: 2rem;
}

.lego-hero-content h1 {
  margin-bottom: 1rem;
}

.lego-hero-subtitle {
  font-size: clamp(16px, 2vw, 22px);
  color: #b0bec5;
  margin-bottom: 1.5rem;
}

.lego-hero-text {
  font-size: clamp(14px, 1.5vw, 16px);
  color: #90a4ae;
  margin-bottom: 2rem;
  line-height: 1.8;
}

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

/* --- 按钮 --- */
.lego-btn-primary {
  display: inline-block;
  padding: 14px 32px;
  background: var(--lego-magenta);
  color: #0d1117;
  font-family: var(--font-heading);
  font-size: 16px;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  min-width: 44px;
  min-height: 44px;
  text-align: center;
}

.lego-btn-primary:hover {
  background: #ff5252;
  box-shadow: 0 0 20px rgba(var(--lego-magenta-rgb), 0.6), 0 0 40px rgba(var(--lego-magenta-rgb), 0.3);
  color: #fff;
  transform: translateY(-2px);
}

.lego-btn-secondary {
  display: inline-block;
  padding: 14px 32px;
  background: transparent;
  color: var(--lego-cyan);
  font-family: var(--font-heading);
  font-size: 16px;
  border: 2px solid var(--lego-cyan);
  border-radius: 2px;
  cursor: pointer;
  transition: all 0.3s ease;
  min-width: 44px;
  min-height: 44px;
  text-align: center;
}

.lego-btn-secondary:hover {
  border-color: var(--lego-cyan);
  box-shadow: 0 0 20px rgba(var(--lego-cyan-rgb), 0.5), 0 0 40px rgba(var(--lego-cyan-rgb), 0.2);
  color: #fff;
  transform: translateY(-2px);
}

/* --- 内容区域 --- */
.lego-section {
  padding: 4rem 1rem;
  position: relative;
  z-index: 1;
}

.lego-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}

.lego-section-title {
  text-align: center;
  margin-bottom: 3rem;
}

/* --- 卡片组件 --- */
.lego-card {
  background: rgba(var(--lego-deepblue-rgb), 0.15);
  border: 1px solid rgba(var(--lego-deepblue-rgb), 0.3);
  border-radius: 2px;
  padding: 1.5rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.lego-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--lego-magenta), var(--lego-cyan), var(--lego-magenta));
  opacity: 0.6;
}

.lego-card:hover {
  border-color: var(--lego-magenta);
  box-shadow: 0 0 15px rgba(var(--lego-magenta-rgb), 0.2), 0 0 30px rgba(var(--lego-magenta-rgb), 0.1);
  transform: translateY(-4px);
}

.lego-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 2px;
  margin-bottom: 1rem;
}

.lego-card-title {
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--lego-cyan);
  margin-bottom: 0.5rem;
}

.lego-card-meta {
  font-size: 13px;
  color: #78909c;
  margin-bottom: 0.5rem;
}

.lego-card-desc {
  font-size: 14px;
  color: #b0bec5;
  line-height: 1.6;
}

/* --- 六大游戏殿堂网格 --- */
.lego-game-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

/* --- 面包屑导航 --- */
.lego-breadcrumb {
  padding: 1rem 0;
  font-size: 14px;
}

.lego-breadcrumb a {
  color: var(--lego-cyan);
}

.lego-breadcrumb span {
  color: #78909c;
  margin: 0 0.5rem;
}

/* --- 全息投影屏幕 --- */
.lego-holo-screen {
  background: rgba(var(--lego-deepblue-rgb), 0.2);
  border: 1px solid rgba(var(--lego-cyan-rgb), 0.3);
  border-radius: 2px;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.lego-holo-screen::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--lego-cyan), transparent);
  animation: lego-scan 4s linear infinite;
}

/* --- 注册表单 --- */
.lego-form-group {
  margin-bottom: 1.5rem;
}

.lego-form-input {
  width: 100%;
  padding: 12px 16px;
  background: rgba(var(--lego-deepblue-rgb), 0.2);
  border: none;
  border-bottom: 2px solid rgba(var(--lego-cyan-rgb), 0.3);
  color: #eceff1;
  font-family: var(--font-body);
  font-size: 15px;
  transition: all 0.3s ease;
  min-height: 44px;
}

.lego-form-input:focus {
  outline: none;
  border-bottom-color: var(--lego-cyan);
  box-shadow: 0 2px 10px rgba(var(--lego-cyan-rgb), 0.2);
  animation: lego-flicker 2s infinite;
}

/* --- VIP摩天楼 --- */
.lego-vip-tower {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.lego-vip-floor {
  background: rgba(var(--lego-deepblue-rgb), 0.15);
  border-left: 3px solid var(--lego-magenta);
  padding: 1.5rem;
  transition: all 0.3s ease;
  cursor: pointer;
}

.lego-vip-floor:hover {
  background: rgba(var(--lego-deepblue-rgb), 0.3);
  border-left-color: var(--lego-cyan);
  box-shadow: 0 0 15px rgba(var(--lego-cyan-rgb), 0.15);
}

.lego-vip-level {
  font-family: var(--font-heading);
  color: var(--lego-magenta);
  font-size: 16px;
  margin-bottom: 0.5rem;
}

/* --- 安全认证 --- */
.lego-security-badges {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin: 2rem 0;
}

.lego-badge {
  text-align: center;
  padding: 1.5rem;
  background: rgba(var(--lego-deepblue-rgb), 0.15);
  border: 1px solid rgba(var(--lego-cyan-rgb), 0.2);
  border-radius: 2px;
  min-width: 160px;
}

.lego-badge-icon {
  font-size: 48px;
  margin-bottom: 0.5rem;
  display: block;
}

/* --- 负责任博弈 --- */
.lego-responsible-section {
  background: rgba(13, 17, 23, 0.95);
  border-top: 2px solid rgba(var(--lego-magenta-rgb), 0.3);
  padding: 3rem 1rem;
}

.lego-age-warning {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border: 3px solid var(--lego-magenta);
  border-radius: 50%;
  font-family: var(--font-heading);
  font-size: 24px;
  color: var(--lego-magenta);
  box-shadow: 0 0 15px rgba(var(--lego-magenta-rgb), 0.4);
  margin-bottom: 1rem;
}

/* --- 页脚 --- */
.lego-footer {
  background: #080c12;
  border-top: 1px solid rgba(var(--lego-deepblue-rgb), 0.3);
  padding: 3rem 1rem 1.5rem;
  position: relative;
  z-index: 1;
}

.lego-footer-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-bottom: 2rem;
}

.lego-footer-col h5 {
  font-family: var(--font-heading);
  color: var(--lego-cyan);
  font-size: 16px;
  margin-bottom: 1rem;
  text-shadow: 0 0 8px rgba(var(--lego-cyan-rgb), 0.3);
}

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

.lego-footer-links li {
  margin-bottom: 0.5rem;
}

.lego-footer-links li a {
  color: #78909c;
  font-size: 14px;
  transition: color 0.3s ease;
}

.lego-footer-links li a:hover {
  color: var(--lego-cyan);
}

.lego-footer-social {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.lego-footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(var(--lego-cyan-rgb), 0.3);
  border-radius: 2px;
  color: var(--lego-cyan);
  font-size: 18px;
  transition: all 0.3s ease;
}

.lego-footer-social a:hover {
  border-color: var(--lego-magenta);
  box-shadow: 0 0 10px rgba(var(--lego-magenta-rgb), 0.3);
  color: var(--lego-magenta);
}

.lego-footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(var(--lego-deepblue-rgb), 0.2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.lego-footer-license {
  font-size: 12px;
  color: #546e7a;
}

.lego-footer-payments {
  display: flex;
  gap: 0.8rem;
  align-items: center;
}

.lego-footer-payments span {
  font-size: 12px;
  color: #546e7a;
  padding: 4px 8px;
  border: 1px solid #37474F;
  border-radius: 2px;
}

.lego-footer-18plus {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 12px;
  color: #546e7a;
}

.lego-footer-18badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 2px solid var(--lego-magenta);
  border-radius: 50%;
  font-family: var(--font-heading);
  font-size: 12px;
  color: var(--lego-magenta);
}

/* --- 内页Hero --- */
.lego-page-hero {
  position: relative;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

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

.lego-page-hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(13,17,23,0.6), rgba(13,17,23,0.9));
}

.lego-page-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 2rem;
}

/* --- 内页内容 --- */
.lego-content-area {
  padding: 3rem 1rem;
}

.lego-content-grid {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.lego-article-block {
  background: rgba(var(--lego-deepblue-rgb), 0.1);
  border: 1px solid rgba(var(--lego-deepblue-rgb), 0.2);
  border-radius: 2px;
  padding: 2rem;
}

.lego-article-block h3 {
  border-left: 3px solid var(--lego-magenta);
  padding-left: 1rem;
  margin-bottom: 1.5rem;
}

.lego-img-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 2rem 0;
}

.lego-img-grid img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border: 1px solid rgba(var(--lego-deepblue-rgb), 0.3);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.lego-img-grid img:hover {
  border-color: var(--lego-cyan);
  box-shadow: 0 0 10px rgba(var(--lego-cyan-rgb), 0.2);
}

/* --- 数据表格 --- */
.lego-data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

.lego-data-table th {
  background: rgba(var(--lego-deepblue-rgb), 0.3);
  color: var(--lego-cyan);
  font-family: var(--font-heading);
  font-size: 14px;
  padding: 12px 16px;
  text-align: left;
  border-bottom: 2px solid var(--lego-magenta);
}

.lego-data-table td {
  padding: 10px 16px;
  border-bottom: 1px solid rgba(var(--lego-deepblue-rgb), 0.2);
  font-size: 14px;
  color: #b0bec5;
}

.lego-data-table tr:hover td {
  background: rgba(var(--lego-deepblue-rgb), 0.1);
}

/* --- FAQ --- */
.lego-faq-item {
  background: rgba(var(--lego-deepblue-rgb), 0.1);
  border: 1px solid rgba(var(--lego-deepblue-rgb), 0.2);
  margin-bottom: 1rem;
  border-radius: 2px;
  overflow: hidden;
}

.lego-faq-question {
  padding: 1rem 1.5rem;
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: 16px;
  color: var(--lego-cyan);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.3s ease;
  min-height: 44px;
}

.lego-faq-question:hover {
  background: rgba(var(--lego-deepblue-rgb), 0.2);
}

.lego-faq-answer {
  padding: 0 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.lego-faq-item.lego-faq-open .lego-faq-answer {
  max-height: 500px;
  padding: 1rem 1.5rem;
}

/* --- APP下载页 --- */
.lego-download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 2rem;
}

.lego-download-card {
  background: rgba(var(--lego-deepblue-rgb), 0.15);
  border: 1px solid rgba(var(--lego-deepblue-rgb), 0.3);
  border-radius: 2px;
  padding: 2rem;
  text-align: center;
}

.lego-qr-placeholder {
  width: 180px;
  height: 180px;
  margin: 1rem auto;
  background: rgba(255,255,255,0.9);
  border: 2px solid var(--lego-cyan);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: #333;
}

/* ============================================
   动画效果
   ============================================ */

/* 动画1：积木闪烁（Neon Flicker） */
@keyframes lego-flicker {
  0%, 19.999%, 22%, 62.999%, 64%, 64.999%, 70%, 100% {
    opacity: 1;
    text-shadow: 0 0 10px rgba(var(--lego-cyan-rgb), 0.6);
  }
  20%, 21.999%, 63%, 63.999%, 65%, 69.999% {
    opacity: 0.7;
    text-shadow: none;
  }
}

/* 动画2：全息投影显现（Hologram Reveal） */
@keyframes lego-hologram-reveal {
  0% {
    opacity: 0;
    transform: translateY(20px);
    filter: blur(4px) hue-rotate(20deg);
    clip-path: inset(0 0 100% 0);
  }
  50% {
    opacity: 0.6;
    filter: blur(2px) hue-rotate(10deg);
    clip-path: inset(0 0 30% 0);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0) hue-rotate(0deg);
    clip-path: inset(0 0 0 0);
  }
}

.lego-holo-animate {
  animation: lego-hologram-reveal 0.8s ease-out forwards;
}

/* 动画3：脉冲波纹（Pulse Ripple） */
@keyframes lego-pulse-ripple {
  0% {
    box-shadow: 0 0 0 0 rgba(var(--lego-magenta-rgb), 0.4);
  }
  70% {
    box-shadow: 0 0 0 15px rgba(var(--lego-magenta-rgb), 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(var(--lego-magenta-rgb), 0);
  }
}

.lego-btn-primary:hover,
.lego-card:hover {
  animation: lego-pulse-ripple 0.6s ease-out;
}

/* 动画4：扫描线 */
@keyframes lego-scan {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* 滚动显现 */
.lego-scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.lego-scroll-reveal.lego-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   响应式设计
   ============================================ */

@media (max-width: 1024px) {
  .lego-game-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .lego-footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .lego-nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(13, 17, 23, 0.98);
    flex-direction: column;
    border-bottom: 2px solid var(--lego-magenta);
    padding: 1rem 0;
  }
  .lego-nav-links.lego-nav-open {
    display: flex;
  }
  .lego-nav-links li a {
    padding: 12px 20px;
    font-size: 15px;
  }
  .lego-menu-toggle {
    display: flex;
  }
  .lego-game-grid {
    grid-template-columns: 1fr;
  }
  .lego-img-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .lego-download-grid {
    grid-template-columns: 1fr;
  }
  .lego-footer-grid {
    grid-template-columns: 1fr;
  }
  .lego-footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .lego-page-hero {
    height: 300px;
  }
  .lego-hero-section {
    min-height: 90vh;
  }
}

@media (max-width: 480px) {
  .lego-img-grid {
    grid-template-columns: 1fr;
  }
  .lego-hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  .lego-security-badges {
    flex-direction: column;
  }
}

/* --- 数据流瀑布背景 Canvas --- */
#brick-data-waterfall {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.06;
}

/* --- 活动卡片 --- */
.lego-event-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.lego-event-item {
  background: rgba(var(--lego-deepblue-rgb), 0.12);
  border: 1px solid rgba(var(--lego-deepblue-rgb), 0.25);
  border-left: 3px solid var(--lego-cyan);
  padding: 1.5rem;
  border-radius: 2px;
  transition: all 0.3s ease;
}

.lego-event-item:hover {
  border-left-color: var(--lego-magenta);
  background: rgba(var(--lego-deepblue-rgb), 0.2);
}

.lego-event-tag {
  display: inline-block;
  padding: 2px 10px;
  background: rgba(var(--lego-magenta-rgb), 0.2);
  color: var(--lego-magenta);
  font-size: 12px;
  font-weight: 700;
  border-radius: 2px;
  margin-bottom: 0.5rem;
}

/* --- 充值方案 --- */
.lego-deposit-plans {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 2rem 0;
}

.lego-deposit-card {
  background: rgba(var(--lego-deepblue-rgb), 0.15);
  border: 1px solid rgba(var(--lego-magenta-rgb), 0.3);
  border-radius: 2px;
  padding: 2rem;
  text-align: center;
  transition: all 0.3s ease;
}

.lego-deposit-card:hover {
  border-color: var(--lego-cyan);
  box-shadow: 0 0 20px rgba(var(--lego-cyan-rgb), 0.15);
  transform: translateY(-4px);
}

.lego-deposit-amount {
  font-family: var(--font-heading);
  font-size: 32px;
  color: var(--lego-cyan);
  margin-bottom: 0.5rem;
}

@media (max-width: 768px) {
  .lego-deposit-plans {
    grid-template-columns: 1fr;
  }
}

/* --- 试玩标签卡 --- */
.lego-trial-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 1.5rem;
  border-bottom: 2px solid rgba(var(--lego-deepblue-rgb), 0.3);
}

.lego-trial-tab {
  padding: 10px 20px;
  background: transparent;
  border: none;
  color: #78909c;
  font-family: var(--font-heading);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s ease;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  min-height: 44px;
}

.lego-trial-tab:hover,
.lego-trial-tab.lego-tab-active {
  color: var(--lego-cyan);
  border-bottom-color: var(--lego-cyan);
}

.lego-trial-content {
  display: none;
}

.lego-trial-content.lego-tab-visible {
  display: block;
}

/* --- OG图片样式 --- */
.lego-og-image {
  display: none;
}

/* --- 两列布局 --- */
.lego-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 768px) {
  .lego-two-col {
    grid-template-columns: 1fr;
  }
}