/* ============================================
   竖屏风暴 - 主样式表
   CSS前缀: sp-
   设计风格: 手机竖屏霓虹风 (Vertical Neon Style)
   ============================================ */

/* === Google Fonts 本地替代 === */
@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Teko:wght@400;600;700&family=Noto+Sans+SC:wght@300;400;500;700&family=Roboto:wght@300;400;500;700&display=swap');

/* === CSS Variables === */
:root {
  --sp-black: #0A0A0A;
  --sp-neon-pink: #FF00E5;
  --sp-cyber-blue: #00F0FF;
  --sp-electric-purple: #7B00FF;
  --sp-text-gray: #E0E0E0;
  --sp-link-blue: #00F0FF;
  --sp-dark-bg: #111111;
  --sp-card-bg: #1A1A1A;
  --sp-border-glow: rgba(0, 240, 255, 0.3);
  --sp-pink-glow: 0 0 15px rgba(255, 0, 229, 0.5), 0 0 30px rgba(255, 0, 229, 0.2);
  --sp-blue-glow: 0 0 15px rgba(0, 240, 255, 0.5), 0 0 30px rgba(0, 240, 255, 0.2);
  --sp-purple-glow: 0 0 15px rgba(123, 0, 255, 0.5), 0 0 30px rgba(123, 0, 255, 0.2);
  --sp-font-title: 'Bebas Neue', 'Teko', sans-serif;
  --sp-font-body: 'Noto Sans SC', 'Roboto', sans-serif;
}

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

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

body {
  font-family: var(--sp-font-body);
  background-color: var(--sp-black);
  color: var(--sp-text-gray);
  line-height: 1.7;
  overflow-x: hidden;
}

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

a:hover {
  text-shadow: var(--sp-blue-glow);
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--sp-font-title);
  color: #fff;
  line-height: 1.2;
}

/* === 干扰标签隐藏 === */
.storm-jammer-block { display: none !important; }

/* === 导航栏 === */
#sp-header {
  width: 100%;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid rgba(0, 240, 255, 0.15);
}

.sp-nav-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.sp-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sp-logo img {
  width: 42px;
  height: 42px;
  border-radius: 8px;
}

.sp-logo-text {
  font-family: var(--sp-font-title);
  font-size: 1.6rem;
  color: #fff;
  letter-spacing: 2px;
  text-shadow: var(--sp-blue-glow);
}

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

.sp-nav-links li a {
  display: block;
  padding: 8px 16px;
  color: var(--sp-text-gray);
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  transition: all 0.3s ease;
  border-radius: 4px;
}

.sp-nav-links li a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--sp-neon-pink), var(--sp-cyber-blue));
  transition: all 0.4s ease;
  transform: translateX(-50%);
  box-shadow: 0 0 8px var(--sp-cyber-blue);
}

.sp-nav-links li a:hover {
  color: #fff;
  text-shadow: 0 0 10px var(--sp-cyber-blue);
}

.sp-nav-links li a:hover::after {
  width: 80%;
}

/* === 汉堡菜单 === */
.sp-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 1100;
  padding: 8px;
}

.sp-hamburger span {
  display: block;
  width: 28px;
  height: 2px;
  background: var(--sp-cyber-blue);
  transition: all 0.3s ease;
  box-shadow: 0 0 6px var(--sp-cyber-blue);
}

.sp-hamburger.sp-active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.sp-hamburger.sp-active span:nth-child(2) {
  opacity: 0;
}

.sp-hamburger.sp-active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.sp-mobile-menu {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(10, 10, 10, 0.97);
  z-index: 1050;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  transform: translateY(100%);
  transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.sp-mobile-menu.sp-open {
  transform: translateY(0);
}

.sp-mobile-menu a {
  font-family: var(--sp-font-title);
  font-size: 2rem;
  color: var(--sp-text-gray);
  letter-spacing: 3px;
  text-shadow: 0 0 20px var(--sp-cyber-blue);
  transition: all 0.3s ease;
}

.sp-mobile-menu a:hover {
  color: var(--sp-cyber-blue);
  text-shadow: 0 0 30px var(--sp-cyber-blue), 0 0 60px var(--sp-neon-pink);
}

/* === Hero 风暴之眼 === */
.sp-hero {
  position: relative;
  width: 100%;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--sp-black);
}

.sp-hero-bg {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.6;
}

.sp-hero-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: linear-gradient(180deg, rgba(10,10,10,0.3) 0%, rgba(10,10,10,0.8) 100%);
}

.sp-hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 40px 20px;
  max-width: 800px;
}

.sp-hero-content h1 {
  font-size: 4rem;
  letter-spacing: 6px;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--sp-neon-pink), var(--sp-cyber-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  margin-bottom: 20px;
  animation: sp-glow-pulse 3s ease-in-out infinite;
}

.sp-hero-slogan {
  font-size: 1.8rem;
  font-family: var(--sp-font-title);
  color: #fff;
  text-shadow: var(--sp-pink-glow);
  margin-bottom: 16px;
  letter-spacing: 4px;
}

.sp-hero-desc {
  font-size: 1.1rem;
  color: var(--sp-text-gray);
  max-width: 600px;
  margin: 0 auto 30px;
  line-height: 1.8;
}

/* === 通用模块标题 === */
.sp-section {
  padding: 80px 20px;
  max-width: 1440px;
  margin: 0 auto;
}

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

.sp-section-tag {
  font-family: 'Roboto Mono', monospace;
  font-size: 0.85rem;
  color: var(--sp-cyber-blue);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 12px;
  text-shadow: 0 0 10px var(--sp-cyber-blue);
}

.sp-section-title {
  font-size: 2.5rem;
  color: #fff;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.sp-section-desc {
  font-size: 1.05rem;
  color: rgba(224, 224, 224, 0.8);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.8;
}

/* === 霓虹按钮 === */
.sp-btn {
  display: inline-block;
  padding: 14px 36px;
  font-family: var(--sp-font-title);
  font-size: 1.1rem;
  letter-spacing: 2px;
  border: 2px solid var(--sp-cyber-blue);
  color: var(--sp-cyber-blue);
  background: transparent;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.3), inset 0 0 10px rgba(0, 240, 255, 0.1);
}

.sp-btn:hover {
  background: var(--sp-cyber-blue);
  color: var(--sp-black);
  box-shadow: 0 0 30px rgba(0, 240, 255, 0.6), 0 0 60px rgba(0, 240, 255, 0.3);
}

.sp-btn-pink {
  border-color: var(--sp-neon-pink);
  color: var(--sp-neon-pink);
  box-shadow: 0 0 10px rgba(255, 0, 229, 0.3), inset 0 0 10px rgba(255, 0, 229, 0.1);
}

.sp-btn-pink:hover {
  background: var(--sp-neon-pink);
  color: #fff;
  box-shadow: 0 0 30px rgba(255, 0, 229, 0.6), 0 0 60px rgba(255, 0, 229, 0.3);
}

/* === 卡片组件 === */
.sp-card {
  background: var(--sp-card-bg);
  border: 1px solid rgba(0, 240, 255, 0.15);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.4s ease;
  position: relative;
}

.sp-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: linear-gradient(135deg, rgba(255, 0, 229, 0.05), rgba(0, 240, 255, 0.05));
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}

.sp-card:hover {
  border-color: var(--sp-cyber-blue);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.2), 0 0 40px rgba(0, 240, 255, 0.1);
  transform: translateY(-4px);
}

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

.sp-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.sp-card-body {
  padding: 20px;
}

.sp-card-title {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: #fff;
}

.sp-card-text {
  font-size: 0.95rem;
  color: rgba(224, 224, 224, 0.7);
  line-height: 1.6;
}

/* === 网格布局 === */
.sp-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

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

.sp-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* === 热门挑战 === */
.sp-challenges {
  background: linear-gradient(180deg, var(--sp-black) 0%, #0d0d15 100%);
}

.sp-challenge-card {
  position: relative;
}

.sp-challenge-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--sp-neon-pink);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  box-shadow: var(--sp-pink-glow);
  z-index: 2;
  letter-spacing: 1px;
}

.sp-challenge-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 12px;
  font-size: 0.85rem;
  color: rgba(224, 224, 224, 0.6);
}

.sp-heat-value {
  color: var(--sp-neon-pink);
  font-weight: 700;
  text-shadow: 0 0 8px rgba(255, 0, 229, 0.5);
}

/* === 新星崛起 === */
.sp-creator-card {
  text-align: center;
  padding: 30px 20px;
}

.sp-creator-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  margin: 0 auto 16px;
  border: 3px solid var(--sp-cyber-blue);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
  object-fit: cover;
  background: var(--sp-dark-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.sp-creator-name {
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 6px;
}

.sp-creator-growth {
  color: var(--sp-cyber-blue);
  font-size: 0.9rem;
  font-weight: 600;
}

/* === 创作学院 === */
.sp-academy-tabs {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.sp-tab-btn {
  padding: 10px 24px;
  border: 1px solid rgba(0, 240, 255, 0.3);
  background: transparent;
  color: var(--sp-text-gray);
  font-family: var(--sp-font-body);
  font-size: 0.95rem;
  border-radius: 30px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.sp-tab-btn:hover, .sp-tab-btn.sp-active {
  border-color: var(--sp-cyber-blue);
  color: var(--sp-cyber-blue);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
  background: rgba(0, 240, 255, 0.08);
}

/* === 灵感源泉 瀑布流 === */
.sp-masonry {
  columns: 3;
  column-gap: 20px;
}

.sp-masonry-item {
  break-inside: avoid;
  margin-bottom: 20px;
}

/* === 装备商店 === */
.sp-gear-card .sp-card-body {
  display: flex;
  flex-direction: column;
}

.sp-gear-price {
  font-family: var(--sp-font-title);
  font-size: 1.4rem;
  color: var(--sp-neon-pink);
  margin-top: 12px;
  text-shadow: 0 0 8px rgba(255, 0, 229, 0.4);
}

/* === 品牌合作 === */
.sp-brand-showcase {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-top: 40px;
}

.sp-brand-img {
  flex: 1;
  border-radius: 12px;
  overflow: hidden;
}

.sp-brand-info {
  flex: 1;
}

/* === 风暴大数据 === */
.sp-data-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.sp-data-card {
  background: var(--sp-card-bg);
  border: 1px solid rgba(0, 240, 255, 0.15);
  border-radius: 12px;
  padding: 24px;
}

.sp-data-card canvas {
  width: 100% !important;
  height: 250px !important;
}

.sp-stat-number {
  font-family: var(--sp-font-title);
  font-size: 3rem;
  color: var(--sp-cyber-blue);
  text-shadow: var(--sp-blue-glow);
}

.sp-stat-label {
  font-size: 0.9rem;
  color: rgba(224, 224, 224, 0.6);
  margin-top: 4px;
}

/* === 社区热议 === */
.sp-buzz-card {
  padding: 24px;
}

.sp-buzz-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(123, 0, 255, 0.2);
  border: 1px solid rgba(123, 0, 255, 0.4);
  color: var(--sp-electric-purple);
  font-size: 0.8rem;
  border-radius: 20px;
  margin-bottom: 12px;
}

.sp-buzz-comment {
  font-style: italic;
  color: rgba(224, 224, 224, 0.8);
  border-left: 3px solid var(--sp-neon-pink);
  padding-left: 16px;
  margin-top: 12px;
}

/* === 加入我们 === */
.sp-join-section {
  position: relative;
  text-align: center;
  padding: 100px 20px;
  overflow: hidden;
}

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

.sp-join-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  margin: 0 auto;
}

.sp-join-benefits {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 40px 0;
}

.sp-benefit-item {
  padding: 20px;
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: 8px;
  background: rgba(26, 26, 26, 0.8);
}

.sp-benefit-icon {
  font-size: 2rem;
  margin-bottom: 10px;
}

/* === 页脚 === */
#sp-footer {
  background: #080808;
  border-top: 1px solid rgba(0, 240, 255, 0.15);
  padding: 60px 20px 30px;
}

.sp-footer-grid {
  max-width: 1440px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 40px;
}

.sp-footer-col h3 {
  font-size: 1.2rem;
  color: var(--sp-cyber-blue);
  margin-bottom: 20px;
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
  letter-spacing: 1px;
}

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

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

.sp-footer-links li a {
  color: rgba(224, 224, 224, 0.7);
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

.sp-footer-links li a:hover {
  color: var(--sp-cyber-blue);
  text-shadow: 0 0 8px rgba(0, 240, 255, 0.4);
}

.sp-footer-bottom {
  max-width: 1440px;
  margin: 0 auto;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
}

.sp-footer-award {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 16px;
}

.sp-footer-award img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

.sp-footer-award span {
  font-size: 0.85rem;
  color: rgba(224, 224, 224, 0.6);
}

.sp-footer-cert {
  font-size: 0.8rem;
  color: rgba(224, 224, 224, 0.5);
  margin-top: 12px;
  line-height: 2;
}

.sp-footer-cert a {
  color: rgba(224, 224, 224, 0.5);
}

.sp-footer-cert a:hover {
  color: var(--sp-cyber-blue);
}

.sp-copyright {
  font-size: 0.8rem;
  color: rgba(224, 224, 224, 0.4);
  margin-top: 16px;
}

/* === 风暴擂台 === */
.sp-arena-wrapper {
  min-height: 80vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 20px;
}

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

.sp-arena-stage {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 30px;
  align-items: center;
  max-width: 1200px;
  width: 100%;
}

.sp-arena-player {
  background: var(--sp-card-bg);
  border: 2px solid rgba(0, 240, 255, 0.2);
  border-radius: 16px;
  overflow: hidden;
  padding: 20px;
  text-align: center;
  transition: all 0.5s ease;
}

.sp-arena-player.sp-leading {
  border-color: var(--sp-neon-pink);
  box-shadow: 0 0 30px rgba(255, 0, 229, 0.4), 0 0 60px rgba(255, 0, 229, 0.2);
}

.sp-arena-video {
  width: 100%;
  aspect-ratio: 9/16;
  max-height: 450px;
  background: #000;
  border-radius: 12px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid rgba(0, 240, 255, 0.1);
}

.sp-arena-video img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sp-arena-vs {
  font-family: var(--sp-font-title);
  font-size: 4rem;
  color: var(--sp-neon-pink);
  text-shadow: 0 0 30px rgba(255, 0, 229, 0.6), 0 0 60px rgba(255, 0, 229, 0.3);
  animation: sp-vs-pulse 2s ease-in-out infinite;
}

.sp-vote-count {
  font-family: var(--sp-font-title);
  font-size: 2.5rem;
  color: var(--sp-cyber-blue);
  text-shadow: var(--sp-blue-glow);
  margin: 10px 0;
}

.sp-vote-btn {
  padding: 12px 40px;
  font-size: 1rem;
  margin-top: 10px;
}

.sp-vote-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  border-color: rgba(224, 224, 224, 0.3);
  color: rgba(224, 224, 224, 0.3);
  box-shadow: none;
}

.sp-arena-result {
  text-align: center;
  margin-top: 40px;
  display: none;
}

.sp-arena-result.sp-show {
  display: block;
}

/* === APP下载页 === */
.sp-app-page {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}

.sp-app-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  max-width: 1200px;
  align-items: center;
}

.sp-app-mockup {
  text-align: center;
}

.sp-app-mockup img {
  max-width: 350px;
  margin: 0 auto;
  border-radius: 24px;
  box-shadow: 0 0 40px rgba(0, 240, 255, 0.2), 0 0 80px rgba(255, 0, 229, 0.1);
}

.sp-app-info h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--sp-neon-pink), var(--sp-cyber-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sp-app-buttons {
  display: flex;
  gap: 16px;
  margin-top: 30px;
}

.sp-store-btn {
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
}

/* === 栏目页通用 === */
.sp-page-banner {
  position: relative;
  height: 350px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.sp-page-banner img {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.5;
}

.sp-page-banner-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: linear-gradient(180deg, rgba(10,10,10,0.4) 0%, rgba(10,10,10,0.9) 100%);
}

.sp-page-banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.sp-page-banner-content h1 {
  font-size: 3rem;
  letter-spacing: 4px;
  text-shadow: var(--sp-blue-glow);
}

.sp-page-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 20px;
}

.sp-video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.sp-video-card {
  position: relative;
}

.sp-video-thumb {
  aspect-ratio: 9/16;
  border-radius: 12px;
  overflow: hidden;
  background: var(--sp-dark-bg);
}

.sp-video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sp-video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background: rgba(0, 240, 255, 0.3);
  border: 2px solid var(--sp-cyber-blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  backdrop-filter: blur(4px);
}

.sp-video-play::after {
  content: '';
  width: 0;
  height: 0;
  border-left: 18px solid var(--sp-cyber-blue);
  border-top: 11px solid transparent;
  border-bottom: 11px solid transparent;
  margin-left: 4px;
}

.sp-video-card:hover .sp-video-play {
  background: rgba(0, 240, 255, 0.5);
  box-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
}

.sp-video-info {
  padding: 12px 0;
}

.sp-video-title {
  font-size: 1rem;
  color: #fff;
  margin-bottom: 6px;
}

.sp-video-meta {
  font-size: 0.85rem;
  color: rgba(224, 224, 224, 0.5);
}

/* === 动画 === */
@keyframes sp-glow-pulse {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.2); }
}

@keyframes sp-vs-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

@keyframes sp-neon-flicker {
  0%, 19%, 21%, 23%, 25%, 54%, 56%, 100% { opacity: 1; }
  20%, 24%, 55% { opacity: 0.6; }
}

@keyframes sp-slide-up {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

.sp-animate-in {
  animation: sp-slide-up 0.6s ease forwards;
}

/* === 响应式 360px === */
@media (max-width: 360px) {
  .sp-hero-content h1 { font-size: 2rem; }
  .sp-hero-slogan { font-size: 1.1rem; }
  .sp-section-title { font-size: 1.6rem; }
  .sp-grid-2, .sp-grid-3, .sp-grid-4 { grid-template-columns: 1fr; }
  .sp-masonry { columns: 1; }
  .sp-data-grid { grid-template-columns: 1fr; }
  .sp-join-benefits { grid-template-columns: 1fr; }
  .sp-arena-stage { grid-template-columns: 1fr; }
  .sp-arena-vs { font-size: 2.5rem; }
  .sp-app-container { grid-template-columns: 1fr; }
  .sp-footer-grid { grid-template-columns: 1fr; }
}

/* === 响应式 768px === */
@media (max-width: 768px) {
  .sp-nav-links { display: none; }
  .sp-hamburger { display: flex; }
  .sp-mobile-menu { display: flex; }

  .sp-hero-content h1 { font-size: 2.5rem; }
  .sp-hero-slogan { font-size: 1.3rem; }
  .sp-section { padding: 50px 16px; }
  .sp-section-title { font-size: 1.8rem; }

  .sp-grid-2 { grid-template-columns: 1fr; }
  .sp-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .sp-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .sp-masonry { columns: 2; }
  .sp-data-grid { grid-template-columns: 1fr; }

  .sp-brand-showcase { flex-direction: column; }
  .sp-join-benefits { grid-template-columns: 1fr; }

  .sp-arena-stage { grid-template-columns: 1fr; gap: 16px; }
  .sp-arena-vs { font-size: 2.5rem; }

  .sp-app-container { grid-template-columns: 1fr; text-align: center; }
  .sp-app-buttons { justify-content: center; }

  .sp-footer-grid { grid-template-columns: 1fr; text-align: center; }
  .sp-page-banner { height: 250px; }
  .sp-page-banner-content h1 { font-size: 2rem; }
}

/* === 响应式 1024px === */
@media (max-width: 1024px) {
  .sp-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .sp-masonry { columns: 2; }
  .sp-nav-links li a { padding: 8px 10px; font-size: 0.88rem; }
}

/* === 响应式 1440px === */
@media (min-width: 1441px) {
  .sp-section { max-width: 1440px; }
  .sp-hero-content h1 { font-size: 5rem; }
}

/* === 页面内容区域 === */
.sp-article-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px;
  line-height: 1.9;
}

.sp-article-content h2 {
  font-size: 1.8rem;
  margin: 40px 0 20px;
  color: var(--sp-cyber-blue);
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.sp-article-content h3 {
  font-size: 1.4rem;
  margin: 30px 0 16px;
  color: var(--sp-neon-pink);
}

.sp-article-content p {
  margin-bottom: 20px;
  color: var(--sp-text-gray);
}

.sp-article-content img {
  border-radius: 12px;
  margin: 24px 0;
  border: 1px solid rgba(0, 240, 255, 0.15);
}

.sp-article-content ul, .sp-article-content ol {
  margin: 16px 0;
  padding-left: 24px;
}

.sp-article-content li {
  margin-bottom: 8px;
  color: rgba(224, 224, 224, 0.8);
}

/* === 社交图标 === */
.sp-social-icons {
  display: flex;
  gap: 16px;
  justify-content: center;
}

.sp-social-icon {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(0, 240, 255, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--sp-cyber-blue);
  font-size: 0.85rem;
  transition: all 0.3s ease;
}

.sp-social-icon:hover {
  border-color: var(--sp-cyber-blue);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
  background: rgba(0, 240, 255, 0.1);
}

/* === 全屏模块背景 === */
.sp-full-bg {
  position: relative;
  overflow: hidden;
}

.sp-full-bg > img.sp-bg-img {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.3;
  z-index: 0;
}

.sp-full-bg > .sp-section {
  position: relative;
  z-index: 1;
}