/* ============================================================
   Arctic Crack Style — 冰裂风主样式表
   色值体系：午夜黑#CFD8DC | 冰裂洋红#0091EA | 冰裂青#ECEFF1
              深空蓝#546E7A | 银灰#0D0D0D
   ============================================================ */

/* === 字体定义 === */
@font-face {
  font-family: 'Fjalla One';
  src: url('../fonts/FjallaOne-Regular.woff2') format('woff2'),
       url('../fonts/FjallaOne-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Hind';
  src: url('../fonts/Hind-Regular.woff2') format('woff2'),
       url('../fonts/Hind-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Hind';
  src: url('../fonts/Hind-Bold.woff2') format('woff2'),
       url('../fonts/Hind-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Hind';
  src: url('../fonts/Hind-Light.woff2') format('woff2'),
       url('../fonts/Hind-Light.ttf') format('truetype');
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

/* === CSS变量 === */
:root {
  --arctic-midnight: #CFD8DC;
  --arctic-magenta: #0091EA;
  --arctic-cyan: #ECEFF1;
  --arctic-deep-blue: #546E7A;
  --arctic-silver: #0D0D0D;
  --arctic-midnight-rgb: 207,216,220;
  --arctic-magenta-rgb: 0,145,234;
  --arctic-cyan-rgb: 236,239,241;
  --arctic-deep-blue-rgb: 84,110,122;
  --arctic-bg-dark: #0a0a14;
  --arctic-bg-card: rgba(84,110,122,0.35);
  --arctic-glow-magenta: 0 0 15px rgba(0,145,234,0.6), 0 0 30px rgba(0,145,234,0.3);
  --arctic-glow-cyan: 0 0 15px rgba(236,239,241,0.4), 0 0 30px rgba(236,239,241,0.2);
  --arctic-font-title: 'Fjalla One', 'PingFang SC', sans-serif;
  --arctic-font-body: 'Hind', '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(--arctic-font-body);
  background-color: var(--arctic-bg-dark);
  color: var(--arctic-cyan);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(rgba(0,145,234,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,145,234,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--arctic-magenta);
  text-decoration: none;
  transition: color 0.3s ease, text-shadow 0.3s ease;
}
a:hover {
  color: var(--arctic-cyan);
  text-shadow: var(--arctic-glow-cyan);
}

/* === 标题系统 === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--arctic-font-title);
  color: var(--arctic-cyan);
  line-height: 1.3;
  margin-bottom: 0.8em;
}
h1 {
  font-size: clamp(28px, 5vw, 52px);
  text-shadow: var(--arctic-glow-cyan);
  letter-spacing: 2px;
}
h2 {
  font-size: clamp(22px, 3.5vw, 36px);
  color: var(--arctic-magenta);
  text-shadow: var(--arctic-glow-magenta);
  border-left: 4px solid var(--arctic-magenta);
  padding-left: 16px;
}
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, 17px);
  margin-bottom: 1em;
  color: var(--arctic-midnight);
}

/* === 导航栏 === */
.arctic-nav-bar {
  position: relative;
  width: 100%;
  background: rgba(10,10,20,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 2px solid var(--arctic-magenta);
  box-shadow: 0 2px 20px rgba(0,145,234,0.3);
  z-index: 100;
  padding: 0 20px;
}
.arctic-nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.arctic-logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--arctic-font-title);
  font-size: 20px;
  color: var(--arctic-cyan);
  text-shadow: var(--arctic-glow-cyan);
}
.arctic-logo-link img {
  width: 36px;
  height: 36px;
}
.arctic-nav-list {
  display: flex;
  list-style: none;
  gap: 4px;
}
.arctic-nav-item a {
  display: block;
  padding: 8px 14px;
  font-family: var(--arctic-font-title);
  font-size: 14px;
  color: var(--arctic-midnight);
  border-radius: 4px;
  transition: all 0.3s ease;
  white-space: nowrap;
}
.arctic-nav-item a:hover,
.arctic-nav-item.arctic-active a {
  color: var(--arctic-cyan);
  background: rgba(0,145,234,0.15);
  text-shadow: var(--arctic-glow-cyan);
}
.arctic-nav-item.arctic-active a::before {
  content: '◆';
  margin-right: 4px;
  font-size: 8px;
  animation: arctic-neon-flicker 2s infinite;
}
.arctic-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  min-width: 44px;
  min-height: 44px;
  justify-content: center;
  align-items: center;
}
.arctic-mobile-toggle span {
  display: block;
  width: 24px;
  height: 3px;
  background: var(--arctic-magenta);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(0,145,234,0.6);
  transition: transform 0.3s ease;
}

/* === Hero区域 === */
.arctic-hero-section {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.arctic-hero-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.arctic-hero-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(26,26,46,0.7);
}
.arctic-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  padding: 40px 20px;
}
.arctic-hero-subtitle {
  font-size: clamp(16px, 2vw, 22px);
  color: var(--arctic-midnight);
  margin-bottom: 24px;
}
.arctic-hero-text {
  font-size: clamp(14px, 1.5vw, 17px);
  color: var(--arctic-midnight);
  line-height: 1.8;
  margin-bottom: 32px;
}
.arctic-btn-group {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.arctic-btn-primary {
  display: inline-block;
  padding: 14px 36px;
  background: var(--arctic-magenta);
  color: var(--arctic-bg-dark);
  font-family: var(--arctic-font-title);
  font-size: 16px;
  font-weight: 700;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s ease;
  min-width: 44px;
  min-height: 44px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.arctic-btn-primary:hover {
  color: var(--arctic-bg-dark);
  box-shadow: var(--arctic-glow-magenta);
  transform: translateY(-2px);
}
.arctic-btn-secondary {
  display: inline-block;
  padding: 14px 36px;
  background: transparent;
  color: var(--arctic-cyan);
  font-family: var(--arctic-font-title);
  font-size: 16px;
  border: 2px solid var(--arctic-cyan);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s ease;
  min-width: 44px;
  min-height: 44px;
  text-align: center;
}
.arctic-btn-secondary:hover {
  color: var(--arctic-cyan);
  box-shadow: var(--arctic-glow-cyan);
  border-color: var(--arctic-magenta);
  transform: translateY(-2px);
}

/* === 模块容器 === */
.arctic-section {
  position: relative;
  padding: 80px 20px;
  max-width: 1400px;
  margin: 0 auto;
  z-index: 1;
}
.arctic-section-full {
  position: relative;
  padding: 80px 20px;
  z-index: 1;
}
.arctic-section-inner {
  max-width: 1400px;
  margin: 0 auto;
}
.arctic-section-title {
  text-align: center;
  margin-bottom: 48px;
}
.arctic-divider {
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--arctic-magenta), var(--arctic-cyan));
  margin: 16px auto 0;
  box-shadow: var(--arctic-glow-magenta);
}

/* === 卡片网格 === */
.arctic-grid-6 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.arctic-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.arctic-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.arctic-card {
  background: var(--arctic-bg-card);
  border: 1px solid rgba(0,145,234,0.3);
  border-radius: 4px;
  padding: 24px;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}
.arctic-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--arctic-magenta), transparent);
}
.arctic-card:hover {
  border-color: var(--arctic-magenta);
  box-shadow: var(--arctic-glow-magenta);
  transform: translateY(-4px);
}
.arctic-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 4px;
  margin-bottom: 16px;
  border: 1px solid rgba(0,145,234,0.2);
}
.arctic-card-title {
  font-family: var(--arctic-font-title);
  font-size: 18px;
  color: var(--arctic-cyan);
  margin-bottom: 8px;
}
.arctic-card-meta {
  font-size: 13px;
  color: var(--arctic-magenta);
  margin-bottom: 8px;
}
.arctic-card-desc {
  font-size: 14px;
  color: var(--arctic-midnight);
  line-height: 1.6;
}
.arctic-card-btn {
  display: inline-block;
  margin-top: 16px;
  padding: 10px 24px;
  background: rgba(0,145,234,0.2);
  color: var(--arctic-magenta);
  border: 1px solid var(--arctic-magenta);
  border-radius: 4px;
  font-size: 14px;
  transition: all 0.3s ease;
  min-height: 44px;
  line-height: 24px;
}
.arctic-card-btn:hover {
  background: var(--arctic-magenta);
  color: var(--arctic-bg-dark);
  box-shadow: var(--arctic-glow-magenta);
}

/* === 试玩区 === */
.arctic-trial-zone {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 24px;
  background: var(--arctic-bg-card);
  border: 1px solid rgba(0,145,234,0.3);
  border-radius: 4px;
  padding: 24px;
}
.arctic-trial-list {
  list-style: none;
}
.arctic-trial-list li {
  padding: 12px 16px;
  border-left: 3px solid transparent;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 14px;
  color: var(--arctic-midnight);
  min-height: 44px;
  display: flex;
  align-items: center;
}
.arctic-trial-list li:hover,
.arctic-trial-list li.arctic-active {
  border-left-color: var(--arctic-magenta);
  color: var(--arctic-cyan);
  background: rgba(0,145,234,0.1);
}
.arctic-trial-screen {
  background: rgba(10,10,20,0.8);
  border: 2px solid var(--arctic-magenta);
  border-radius: 4px;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.arctic-trial-screen img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* === 影院频道 === */
.arctic-cinema-screen {
  background: var(--arctic-deep-blue);
  border: 2px solid var(--arctic-magenta);
  border-radius: 4px;
  padding: 24px;
  position: relative;
}
.arctic-cinema-player {
  width: 100%;
  aspect-ratio: 16/9;
  background: rgba(10,10,20,0.9);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}
.arctic-cinema-player img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.7;
}
.arctic-play-btn {
  position: absolute;
  width: 72px;
  height: 72px;
  background: rgba(0,145,234,0.8);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: var(--arctic-glow-magenta);
}
.arctic-play-btn::after {
  content: '';
  border-left: 24px solid var(--arctic-bg-dark);
  border-top: 14px solid transparent;
  border-bottom: 14px solid transparent;
  margin-left: 4px;
}
.arctic-play-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 0 30px rgba(0,145,234,0.8);
}
.arctic-video-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.arctic-video-item {
  background: rgba(10,10,20,0.6);
  border: 1px solid rgba(0,145,234,0.2);
  border-radius: 4px;
  padding: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
}
.arctic-video-item:hover {
  border-color: var(--arctic-magenta);
  box-shadow: var(--arctic-glow-magenta);
}

/* === 注册表单 === */
.arctic-form-card {
  background: var(--arctic-bg-card);
  border: 1px solid rgba(0,145,234,0.3);
  border-radius: 4px;
  padding: 40px;
  max-width: 600px;
  margin: 0 auto;
}
.arctic-form-group {
  margin-bottom: 20px;
}
.arctic-form-label {
  display: block;
  font-size: 14px;
  color: var(--arctic-cyan);
  margin-bottom: 8px;
  font-family: var(--arctic-font-title);
}
.arctic-form-input {
  width: 100%;
  padding: 12px 16px;
  background: rgba(10,10,20,0.8);
  border: none;
  border-bottom: 2px solid var(--arctic-cyan);
  color: var(--arctic-cyan);
  font-family: var(--arctic-font-body);
  font-size: 16px;
  transition: all 0.3s ease;
  min-height: 44px;
}
.arctic-form-input:focus {
  outline: none;
  border-bottom-color: var(--arctic-magenta);
  box-shadow: 0 2px 10px rgba(0,145,234,0.3);
  animation: arctic-neon-flicker 1.5s ease-in-out;
}

/* === 首充广告牌 === */
.arctic-billboard {
  background: linear-gradient(135deg, rgba(0,145,234,0.15), rgba(84,110,122,0.3));
  border: 2px solid var(--arctic-magenta);
  border-radius: 4px;
  padding: 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.arctic-billboard::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle, rgba(0,145,234,0.1) 0%, transparent 70%);
  animation: arctic-pulse-bg 4s ease-in-out infinite;
}
.arctic-price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.arctic-price-card {
  background: rgba(10,10,20,0.6);
  border: 1px solid rgba(0,145,234,0.3);
  border-radius: 4px;
  padding: 24px;
  transition: all 0.3s ease;
}
.arctic-price-card:hover {
  border-color: var(--arctic-magenta);
  box-shadow: var(--arctic-glow-magenta);
  transform: translateY(-4px);
}
.arctic-price-title {
  font-family: var(--arctic-font-title);
  font-size: 20px;
  color: var(--arctic-magenta);
  margin-bottom: 12px;
}
.arctic-price-amount {
  font-size: 36px;
  font-family: var(--arctic-font-title);
  color: var(--arctic-cyan);
  text-shadow: var(--arctic-glow-cyan);
}

/* === 活动广场 === */
.arctic-quest-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.arctic-quest-card {
  background: var(--arctic-bg-card);
  border: 1px solid rgba(0,145,234,0.2);
  border-radius: 4px;
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: all 0.3s ease;
}
.arctic-quest-card:hover {
  border-color: var(--arctic-magenta);
  box-shadow: var(--arctic-glow-magenta);
}
.arctic-quest-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  background: rgba(0,145,234,0.2);
  border: 1px solid var(--arctic-magenta);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--arctic-magenta);
}

/* === VIP摩天楼 === */
.arctic-tower-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.arctic-tower-visual {
  position: relative;
}
.arctic-tower-visual img {
  width: 100%;
  border-radius: 4px;
  border: 1px solid rgba(0,145,234,0.3);
}
.arctic-floor-list {
  list-style: none;
}
.arctic-floor-item {
  padding: 20px;
  border-left: 3px solid var(--arctic-deep-blue);
  margin-bottom: 16px;
  background: var(--arctic-bg-card);
  border-radius: 0 4px 4px 0;
  transition: all 0.3s ease;
  cursor: pointer;
}
.arctic-floor-item:hover {
  border-left-color: var(--arctic-magenta);
  box-shadow: var(--arctic-glow-magenta);
}
.arctic-floor-level {
  font-family: var(--arctic-font-title);
  font-size: 16px;
  color: var(--arctic-magenta);
  margin-bottom: 4px;
}
.arctic-floor-desc {
  font-size: 14px;
  color: var(--arctic-midnight);
}

/* === 安全认证 === */
.arctic-security-zone {
  background: var(--arctic-bg-card);
  border: 1px solid rgba(0,145,234,0.2);
  border-radius: 4px;
  padding: 48px;
}
.arctic-cert-grid {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin: 32px 0;
  flex-wrap: wrap;
}
.arctic-cert-badge {
  text-align: center;
  padding: 24px;
  border: 1px solid rgba(0,145,234,0.3);
  border-radius: 4px;
  min-width: 180px;
  transition: all 0.3s ease;
}
.arctic-cert-badge:hover {
  box-shadow: var(--arctic-glow-magenta);
}
.arctic-cert-badge img {
  width: 80px;
  height: 80px;
  margin: 0 auto 12px;
}
.arctic-cert-name {
  font-family: var(--arctic-font-title);
  font-size: 14px;
  color: var(--arctic-cyan);
}

/* === 负责任博弈 === */
.arctic-curfew-zone {
  background: rgba(10,10,20,0.8);
  border-top: 2px solid rgba(0,145,234,0.3);
  padding: 48px 20px;
}
.arctic-curfew-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  align-items: start;
}
.arctic-age-badge {
  width: 64px;
  height: 64px;
  border: 3px solid var(--arctic-magenta);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--arctic-font-title);
  font-size: 24px;
  color: var(--arctic-magenta);
  box-shadow: var(--arctic-glow-magenta);
}

/* === 页脚 === */
.arctic-footer {
  background: rgba(10,10,20,0.95);
  border-top: 2px solid var(--arctic-magenta);
  padding: 48px 20px 24px;
  position: relative;
  z-index: 1;
}
.arctic-footer-inner {
  max-width: 1400px;
  margin: 0 auto;
}
.arctic-footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-bottom: 32px;
}
.arctic-footer-col-title {
  font-family: var(--arctic-font-title);
  font-size: 16px;
  color: var(--arctic-cyan);
  margin-bottom: 16px;
  text-shadow: var(--arctic-glow-cyan);
}
.arctic-footer-links {
  list-style: none;
}
.arctic-footer-links li {
  margin-bottom: 8px;
}
.arctic-footer-links a {
  font-size: 14px;
  color: var(--arctic-midnight);
  transition: color 0.3s ease;
}
.arctic-footer-links a:hover {
  color: var(--arctic-magenta);
}
.arctic-social-icons {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}
.arctic-social-icon {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(0,145,234,0.3);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--arctic-midnight);
  transition: all 0.3s ease;
  min-width: 44px;
  min-height: 44px;
}
.arctic-social-icon:hover {
  border-color: var(--arctic-magenta);
  color: var(--arctic-magenta);
  box-shadow: var(--arctic-glow-magenta);
}
.arctic-payment-icons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.arctic-payment-icon {
  padding: 6px 12px;
  border: 1px solid rgba(84,110,122,0.5);
  border-radius: 4px;
  font-size: 12px;
  color: var(--arctic-midnight);
}
.arctic-footer-bottom {
  border-top: 1px solid rgba(84,110,122,0.3);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.arctic-footer-license {
  font-size: 12px;
  color: var(--arctic-midnight);
  opacity: 0.7;
}
.arctic-footer-age {
  display: flex;
  align-items: center;
  gap: 8px;
}
.arctic-footer-age-badge {
  width: 32px;
  height: 32px;
  border: 2px solid var(--arctic-magenta);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--arctic-font-title);
  font-size: 12px;
  color: var(--arctic-magenta);
}

/* === 面包屑 === */
.arctic-breadcrumb {
  padding: 16px 20px;
  max-width: 1400px;
  margin: 0 auto;
  font-size: 13px;
  color: var(--arctic-midnight);
  z-index: 1;
  position: relative;
}
.arctic-breadcrumb a {
  color: var(--arctic-magenta);
}
.arctic-breadcrumb span {
  margin: 0 8px;
  color: var(--arctic-deep-blue);
}

/* === 内页Hero === */
.arctic-inner-hero {
  position: relative;
  width: 100%;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.arctic-inner-hero .arctic-hero-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-size: cover;
  background-position: center;
}
.arctic-inner-hero .arctic-hero-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(26,26,46,0.75);
}
.arctic-inner-hero .arctic-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 20px;
}

/* === 内页内容 === */
.arctic-content-area {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 20px;
  position: relative;
  z-index: 1;
}
.arctic-content-block {
  margin-bottom: 48px;
}
.arctic-content-block p {
  margin-bottom: 16px;
}
.arctic-img-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 24px 0;
}
.arctic-img-grid img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid rgba(0,145,234,0.2);
  transition: all 0.3s ease;
}
.arctic-img-grid img:hover {
  border-color: var(--arctic-magenta);
  box-shadow: var(--arctic-glow-magenta);
}
.arctic-info-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}
.arctic-info-table th,
.arctic-info-table td {
  padding: 12px 16px;
  border: 1px solid rgba(84,110,122,0.3);
  font-size: 14px;
}
.arctic-info-table th {
  background: rgba(0,145,234,0.15);
  color: var(--arctic-cyan);
  font-family: var(--arctic-font-title);
  text-align: left;
}
.arctic-info-table td {
  color: var(--arctic-midnight);
}
.arctic-info-table tr:hover td {
  background: rgba(0,145,234,0.05);
}

/* === APP下载 === */
.arctic-download-zone {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}
.arctic-download-card {
  background: var(--arctic-bg-card);
  border: 1px solid rgba(0,145,234,0.3);
  border-radius: 4px;
  padding: 40px;
  text-align: center;
  transition: all 0.3s ease;
}
.arctic-download-card:hover {
  border-color: var(--arctic-magenta);
  box-shadow: var(--arctic-glow-magenta);
}
.arctic-qr-placeholder {
  width: 180px;
  height: 180px;
  background: var(--arctic-cyan);
  margin: 24px auto;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--arctic-bg-dark);
  font-family: var(--arctic-font-title);
}

/* === 动画 === */
@keyframes arctic-neon-flicker {
  0%, 100% { opacity: 1; }
  5% { opacity: 0.8; }
  10% { opacity: 1; }
  15% { opacity: 0.6; }
  20% { opacity: 1; }
  80% { opacity: 1; }
  85% { opacity: 0.7; }
  90% { opacity: 1; }
}
@keyframes arctic-hologram-reveal {
  0% {
    opacity: 0;
    transform: translateY(20px);
    filter: blur(4px) hue-rotate(20deg);
  }
  50% {
    opacity: 0.6;
    filter: blur(1px) hue-rotate(5deg);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0) hue-rotate(0deg);
  }
}
@keyframes arctic-pulse-ripple {
  0% {
    box-shadow: 0 0 0 0 rgba(0,145,234,0.4);
  }
  100% {
    box-shadow: 0 0 0 20px rgba(0,145,234,0);
  }
}
@keyframes arctic-pulse-bg {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(180deg); }
}
@keyframes arctic-data-fall {
  0% { transform: translateY(-100%); opacity: 0; }
  10% { opacity: 0.6; }
  90% { opacity: 0.6; }
  100% { transform: translateY(100vh); opacity: 0; }
}

.arctic-animate-in {
  animation: arctic-hologram-reveal 0.8s ease-out forwards;
}
.arctic-flicker {
  animation: arctic-neon-flicker 3s infinite;
}
.arctic-pulse:hover {
  animation: arctic-pulse-ripple 0.6s ease-out;
}

/* === 数据流瀑布背景 === */
.arctic-data-waterfall {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.arctic-data-stream {
  position: absolute;
  font-family: monospace;
  font-size: 12px;
  color: rgba(0,145,234,0.15);
  white-space: nowrap;
  animation: arctic-data-fall linear infinite;
  writing-mode: vertical-rl;
}

/* === 响应式设计 === */
@media (max-width: 1024px) {
  .arctic-grid-6 { grid-template-columns: repeat(2, 1fr); }
  .arctic-footer-grid { grid-template-columns: repeat(2, 1fr); }
  .arctic-tower-section { grid-template-columns: 1fr; }
  .arctic-download-zone { grid-template-columns: 1fr; }
  .arctic-price-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .arctic-nav-list {
    display: none;
    position: absolute;
    top: 64px;
    left: 0; right: 0;
    background: rgba(10,10,20,0.98);
    flex-direction: column;
    padding: 16px;
    border-bottom: 2px solid var(--arctic-magenta);
  }
  .arctic-nav-list.arctic-nav-open {
    display: flex;
  }
  .arctic-mobile-toggle {
    display: flex;
  }
  .arctic-grid-6 { grid-template-columns: 1fr; }
  .arctic-grid-3 { grid-template-columns: 1fr; }
  .arctic-grid-2 { grid-template-columns: 1fr; }
  .arctic-quest-grid { grid-template-columns: 1fr; }
  .arctic-video-list { grid-template-columns: 1fr; }
  .arctic-trial-zone { grid-template-columns: 1fr; }
  .arctic-img-grid { grid-template-columns: repeat(2, 1fr); }
  .arctic-curfew-inner { grid-template-columns: 1fr; }
  .arctic-section { padding: 48px 16px; }
  .arctic-inner-hero { height: 280px; }
  .arctic-billboard { padding: 32px 16px; }
  .arctic-price-grid { grid-template-columns: 1fr; }
  .arctic-form-card { padding: 24px 16px; }
  h1 { font-size: 28px; }
  h2 { font-size: 22px; }
}
@media (max-width: 414px) {
  .arctic-nav-inner { height: 56px; }
  .arctic-hero-content { padding: 20px 12px; }
  .arctic-img-grid { grid-template-columns: 1fr; }
  .arctic-cert-grid { gap: 16px; }
}