/* ============================================
   壹号娱乐 - 烈焰竞技风 主样式表
   ============================================ */

/* --- 字体引入 --- */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

/* --- CSS变量定义 --- */
:root {
  --flame-red: #d63031;
  --competition-blue: #0984e3;
  --deep-charcoal: #1e272e;
  --champion-gold: #f0932b;
  --flame-red-dark: #b71c1c;
  --competition-blue-dark: #0652DD;
  --text-white: #f5f5f5;
  --text-gray: #b2bec3;
  --card-bg: rgba(30, 39, 46, 0.92);
  --card-border: rgba(214, 48, 49, 0.25);
  --section-gap: 4rem;
}

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

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

body {
  font-family: 'Noto Sans SC', 'Alibaba PuHuiTi', 'Microsoft YaHei', sans-serif;
  background-color: var(--deep-charcoal);
  color: var(--text-white);
  line-height: 1.8;
  overflow-x: hidden;
}

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

a:hover {
  color: var(--champion-gold);
}

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

/* --- 通用容器 --- */
.flame-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.flame-section {
  padding: var(--section-gap) 0;
  position: relative;
}

/* --- 斜切分割装饰 --- */
.diagonal-top {
  position: relative;
}
.diagonal-top::before {
  content: '';
  position: absolute;
  top: -3rem;
  left: 0;
  width: 100%;
  height: 3rem;
  background: inherit;
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  z-index: 1;
}

.diagonal-bottom::after {
  content: '';
  position: absolute;
  bottom: -3rem;
  left: 0;
  width: 100%;
  height: 3rem;
  background: inherit;
  clip-path: polygon(0 0, 100% 0, 0 100%);
  z-index: 1;
}

/* --- 标题样式 --- */
.section-title {
  font-family: Impact, 'Arial Black', sans-serif;
  font-size: 2.5rem;
  color: var(--text-white);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 1rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  display: block;
  width: 60%;
  height: 4px;
  background: linear-gradient(90deg, var(--flame-red), var(--champion-gold));
  margin-top: 0.5rem;
  border-radius: 2px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-gray);
  margin-bottom: 2.5rem;
  max-width: 700px;
}

/* ============================================
   导航栏
   ============================================ */
.arena-nav {
  background: linear-gradient(180deg, rgba(30,39,46,0.98) 0%, rgba(30,39,46,0.85) 100%);
  padding: 0.8rem 0;
  position: relative;
  z-index: 100;
  border-bottom: 2px solid var(--flame-red);
}

.arena-nav .flame-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.nav-logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--flame-red), var(--champion-gold));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: Impact, sans-serif;
  font-size: 1.5rem;
  color: #fff;
  font-weight: 900;
}

.nav-logo-text {
  font-family: Impact, 'Arial Black', sans-serif;
  font-size: 1.4rem;
  color: var(--flame-red);
  letter-spacing: 1px;
}

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

.nav-links li a {
  display: block;
  padding: 0.6rem 1.1rem;
  color: var(--text-white);
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  transition: all 0.3s ease;
  clip-path: polygon(8% 0, 100% 0, 92% 100%, 0 100%);
  background: transparent;
}

.nav-links li a:hover,
.nav-links li a.active {
  background: var(--flame-red);
  color: #fff;
}

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

.nav-hamburger span {
  width: 28px;
  height: 3px;
  background: var(--flame-red);
  border-radius: 2px;
  transition: 0.3s;
}

/* --- 移动端导航 --- */
@media (max-width: 768px) {
  .nav-hamburger {
    display: flex;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(30,39,46,0.98);
    flex-direction: column;
    padding: 1rem;
    border-bottom: 2px solid var(--flame-red);
  }
  .nav-links.active {
    display: flex;
  }
  .nav-links li a {
    clip-path: none;
    padding: 0.8rem 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
  }
}

/* ============================================
   模块1：全屏视频Hero
   ============================================ */
.hero-arena {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-arena__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-arena__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-arena__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(30,39,46,0.7) 0%, rgba(30,39,46,0.5) 40%, rgba(30,39,46,0.85) 100%);
  z-index: 1;
}

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

.hero-arena__title {
  font-family: Impact, 'Arial Black', sans-serif;
  font-size: 4rem;
  color: #fff;
  text-shadow: 0 0 30px rgba(214,48,49,0.5), 0 4px 8px rgba(0,0,0,0.5);
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero-arena__title span {
  color: var(--flame-red);
}

.hero-arena__slogan {
  font-size: 1.5rem;
  color: var(--champion-gold);
  margin-bottom: 2rem;
  font-weight: 500;
  letter-spacing: 3px;
}

.hero-arena__play-btn {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--flame-red);
  border: 3px solid rgba(255,255,255,0.3);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  margin-bottom: 2rem;
  animation: breathe 2s ease-in-out infinite;
  transition: transform 0.3s;
}

.hero-arena__play-btn:hover {
  transform: scale(1.1);
}

.hero-arena__play-btn svg {
  width: 30px;
  height: 30px;
  fill: #fff;
  margin-left: 4px;
}

.cta-btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  background: linear-gradient(135deg, var(--flame-red), var(--flame-red-dark));
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 2px;
  animation: breathe 2.5s ease-in-out infinite;
  transition: transform 0.3s, box-shadow 0.3s;
  clip-path: polygon(5% 0, 100% 0, 95% 100%, 0 100%);
}

.cta-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 0 25px rgba(214,48,49,0.6);
  color: #fff;
}

.cta-btn--blue {
  background: linear-gradient(135deg, var(--competition-blue), var(--competition-blue-dark));
}

@keyframes breathe {
  0%, 100% { box-shadow: 0 0 10px rgba(214,48,49,0.3); }
  50% { box-shadow: 0 0 25px rgba(214,48,49,0.6); }
}

/* ============================================
   模块2：博彩玩法种类概览
   ============================================ */
.game-categories {
  background: linear-gradient(135deg, #1e272e 0%, #2d3436 100%);
  padding: var(--section-gap) 0;
}

.categories-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr 0.9fr;
  gap: 1.5rem;
}

.category-card {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  min-height: 280px;
  cursor: pointer;
  transition: transform 0.4s ease;
  clip-path: polygon(0 0, 100% 3%, 100% 97%, 0 100%);
}

.category-card:hover {
  transform: scale(1.03);
}

.category-card__bg {
  position: absolute;
  inset: 0;
}

.category-card__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: blur(2px) brightness(0.6);
  transition: filter 0.4s;
}

.category-card:hover .category-card__bg img {
  filter: blur(3px) brightness(0.4);
}

.category-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(214,48,49,0.7) 0%, rgba(9,132,227,0.5) 100%);
  clip-path: polygon(0 20%, 100% 0, 100% 80%, 0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.4s;
}

.category-card:nth-child(2) .category-card__overlay {
  background: linear-gradient(135deg, rgba(9,132,227,0.7) 0%, rgba(214,48,49,0.5) 100%);
}

.category-card:nth-child(3) .category-card__overlay {
  background: linear-gradient(135deg, rgba(240,147,43,0.7) 0%, rgba(214,48,49,0.5) 100%);
}

.category-card:nth-child(4) .category-card__overlay {
  background: linear-gradient(135deg, rgba(214,48,49,0.6) 0%, rgba(240,147,43,0.6) 100%);
}

.category-card:hover .category-card__overlay {
  background: rgba(30,39,46,0.8);
}

.category-card__name {
  font-family: Impact, 'Arial Black', sans-serif;
  font-size: 1.8rem;
  color: #fff;
  text-shadow: 0 2px 8px rgba(0,0,0,0.5);
  letter-spacing: 2px;
  z-index: 2;
  position: relative;
}

@media (max-width: 768px) {
  .categories-grid {
    grid-template-columns: 1fr 1fr;
  }
  .category-card {
    min-height: 200px;
  }
}

@media (max-width: 480px) {
  .categories-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   模块3：百家乐开奖走势
   ============================================ */
.baccarat-trend {
  background: #1a1f25;
  padding: var(--section-gap) 0;
  position: relative;
}

.baccarat-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
  align-items: center;
}

.baccarat-info h3 {
  font-family: Impact, sans-serif;
  font-size: 2rem;
  color: var(--champion-gold);
  margin-bottom: 1rem;
}

.baccarat-info p {
  color: var(--text-gray);
  margin-bottom: 1.5rem;
  line-height: 1.9;
}

.baccarat-dealer-img {
  border-radius: 12px;
  overflow: hidden;
  margin-top: 1.5rem;
  border: 2px solid var(--flame-red);
}

.baccarat-chart {
  background: rgba(30,39,46,0.8);
  border-radius: 12px;
  padding: 1.5rem;
  border: 1px solid rgba(214,48,49,0.2);
}

.road-map {
  display: grid;
  grid-template-columns: repeat(20, 1fr);
  gap: 3px;
}

.road-cell {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  color: #fff;
}

.road-cell--banker {
  background: var(--flame-red);
}

.road-cell--player {
  background: var(--competition-blue);
}

.road-cell--tie {
  background: transparent;
  border: 2px solid #27ae60;
  color: #27ae60;
}

.road-cell--empty {
  background: rgba(255,255,255,0.05);
}

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

/* ============================================
   模块4：PG电子游戏卡片
   ============================================ */
.pg-games {
  background: linear-gradient(180deg, #2d3436 0%, #1e272e 100%);
  padding: var(--section-gap) 0;
}

.pg-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.pg-card {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  transition: transform 0.4s;
}

.pg-card:hover {
  transform: scale(1.03);
}

.pg-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: filter 0.4s;
}

.pg-card:hover .pg-card__img {
  filter: blur(3px);
}

.pg-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: background 0.4s;
}

.pg-card:hover .pg-card__overlay {
  background: rgba(0,0,0,0.65);
}

.pg-card__name {
  font-family: Impact, sans-serif;
  font-size: 1.3rem;
  color: #fff;
  margin-bottom: 1rem;
  text-shadow: 0 2px 6px rgba(0,0,0,0.5);
  position: absolute;
  bottom: 0.5rem;
  left: 0;
  right: 0;
  text-align: center;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  padding: 2rem 0.5rem 0.8rem;
}

.pg-card__play {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--flame-red);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.8);
  transition: all 0.4s;
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
}

.pg-card:hover .pg-card__play {
  opacity: 1;
  transform: scale(1);
}

@media (max-width: 768px) {
  .pg-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .pg-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   模块5：首存优惠+充值活动
   ============================================ */
.promo-banner {
  background: linear-gradient(135deg, var(--deep-charcoal) 0%, #2d3436 50%, var(--deep-charcoal) 100%);
  padding: 4rem 0;
  position: relative;
  overflow: hidden;
}

.promo-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(214,48,49,0.15) 0%, transparent 60%),
              radial-gradient(circle at 70% 50%, rgba(240,147,43,0.1) 0%, transparent 60%);
}

.promo-content {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.promo-text h3 {
  font-family: Impact, sans-serif;
  font-size: 2.5rem;
  color: var(--champion-gold);
  margin-bottom: 0.5rem;
}

.promo-text h3 span {
  color: var(--flame-red);
  font-size: 3rem;
}

.promo-text p {
  color: var(--text-gray);
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

.countdown-box {
  text-align: center;
}

.countdown-label {
  font-size: 1rem;
  color: var(--text-gray);
  margin-bottom: 1rem;
}

.countdown-timer {
  display: flex;
  gap: 0.8rem;
  justify-content: center;
}

.countdown-unit {
  background: rgba(214,48,49,0.15);
  border: 1px solid var(--flame-red);
  border-radius: 8px;
  padding: 1rem 1.2rem;
  min-width: 70px;
}

.countdown-number {
  font-family: Impact, sans-serif;
  font-size: 2.5rem;
  color: var(--flame-red);
  display: block;
  line-height: 1;
}

.countdown-text {
  font-size: 0.75rem;
  color: var(--text-gray);
  margin-top: 0.3rem;
  display: block;
}

@media (max-width: 768px) {
  .promo-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .promo-text h3 {
    font-size: 1.8rem;
  }
  .promo-text h3 span {
    font-size: 2.2rem;
  }
}

/* ============================================
   模块6：博彩文章
   ============================================ */
.articles-section {
  background: #1e272e;
  padding: var(--section-gap) 0;
}

.articles-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.article-card {
  background: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--card-border);
  transition: transform 0.3s, box-shadow 0.3s;
}

.article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(214,48,49,0.15);
}

.article-card__img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.article-card__body {
  padding: 1.5rem;
}

.article-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.8rem;
  line-height: 1.5;
}

.article-card__title a {
  color: #fff;
}

.article-card__title a:hover {
  color: var(--flame-red);
}

.article-card__excerpt {
  color: var(--text-gray);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card__meta {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.8rem;
  color: var(--text-gray);
}

.article-card__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--flame-red), var(--champion-gold));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: #fff;
  font-weight: 700;
}

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

/* ============================================
   模块7：用户评论
   ============================================ */
.reviews-section {
  background: linear-gradient(135deg, #2d3436 0%, #1e272e 100%);
  padding: var(--section-gap) 0;
}

.reviews-carousel {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.review-card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 1.5rem;
  border: 1px solid var(--card-border);
  position: relative;
  transition: transform 0.3s;
}

.review-card:hover {
  transform: translateY(-3px);
}

.review-card__header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.review-card__avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--flame-red), var(--champion-gold));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #fff;
  font-weight: 700;
  flex-shrink: 0;
}

.review-card__info {
  flex: 1;
}

.review-card__name {
  font-weight: 700;
  color: #fff;
  font-size: 1rem;
}

.review-card__level {
  font-size: 0.8rem;
  color: var(--champion-gold);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.review-card__stars {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  color: var(--champion-gold);
  font-size: 0.9rem;
  letter-spacing: 1px;
}

.review-card__content {
  color: var(--text-gray);
  font-size: 0.95rem;
  line-height: 1.8;
  font-style: italic;
  border-left: 3px solid var(--flame-red);
  padding-left: 1rem;
}

.review-card__date {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.3);
  margin-top: 0.8rem;
  text-align: right;
}

@media (max-width: 768px) {
  .reviews-carousel {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   模块8：注册模块
   ============================================ */
.register-section {
  background: var(--deep-charcoal);
  padding: 4rem 0;
  border-top: 2px solid var(--flame-red);
  border-bottom: 2px solid var(--flame-red);
}

.register-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.register-promo h3 {
  font-family: Impact, sans-serif;
  font-size: 2rem;
  color: var(--champion-gold);
  margin-bottom: 1rem;
}

.register-promo p {
  color: var(--text-gray);
  font-size: 1.05rem;
  line-height: 1.8;
}

.register-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.register-form input {
  padding: 0.9rem 1.2rem;
  background: rgba(255,255,255,0.05);
  border: 2px solid var(--competition-blue);
  border-radius: 6px;
  color: #fff;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.3s;
}

.register-form input:focus {
  border-color: var(--flame-red);
}

.register-form input::placeholder {
  color: rgba(255,255,255,0.4);
}

.register-form button {
  padding: 1rem;
  background: linear-gradient(135deg, var(--flame-red), var(--flame-red-dark));
  border: none;
  border-radius: 6px;
  color: #fff;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 2px;
  transition: transform 0.3s, box-shadow 0.3s;
}

.register-form button:hover {
  transform: scale(1.02);
  box-shadow: 0 0 20px rgba(214,48,49,0.5);
}

@media (max-width: 768px) {
  .register-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

/* ============================================
   模块9：MGA牌照
   ============================================ */
.mga-section {
  background: #1a1f25;
  padding: 3rem 0;
}

.mga-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 2rem;
  align-items: center;
}

.mga-logo {
  width: 150px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.1);
}

.mga-text h4 {
  font-size: 1.2rem;
  color: var(--champion-gold);
  margin-bottom: 0.5rem;
}

.mga-text p {
  color: var(--text-gray);
  font-size: 0.95rem;
  line-height: 1.8;
}

.mga-license {
  font-family: monospace;
  color: var(--competition-blue);
  font-weight: 700;
}

@media (max-width: 768px) {
  .mga-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .mga-logo {
    margin: 0 auto;
  }
}

/* ============================================
   模块10：支付方式
   ============================================ */
.payment-section {
  background: var(--deep-charcoal);
  padding: 3rem 0;
}

.payment-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
  align-items: center;
}

.payment-item {
  background: rgba(255,255,255,0.05);
  border-radius: 8px;
  padding: 1rem 1.5rem;
  min-width: 120px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.08);
  transition: transform 0.3s;
  position: relative;
}

.payment-item:hover {
  transform: translateY(-3px);
}

.payment-item--featured {
  border-color: var(--champion-gold);
  background: rgba(240,147,43,0.08);
}

.payment-item__badge {
  position: absolute;
  top: -8px;
  right: -8px;
  background: var(--champion-gold);
  color: #1e272e;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
}

.payment-item__name {
  font-size: 0.9rem;
  color: var(--text-white);
  margin-top: 0.5rem;
}

.payment-item__icon {
  font-size: 2rem;
}

/* ============================================
   模块11：FAQ手风琴
   ============================================ */
.faq-section {
  background: linear-gradient(135deg, #2d3436 0%, #1e272e 100%);
  padding: var(--section-gap) 0;
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 1rem;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  overflow: hidden;
}

.faq-question {
  padding: 1.2rem 1.5rem;
  background: rgba(214,48,49,0.08);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
  color: #fff;
  font-size: 1.05rem;
  clip-path: polygon(0 0, 100% 0, 98% 100%, 2% 100%);
  transition: background 0.3s;
}

.faq-question:hover {
  background: rgba(214,48,49,0.15);
}

.faq-question__icon {
  font-size: 1.5rem;
  color: var(--flame-red);
  transition: transform 0.3s;
}

.faq-item.active .faq-question__icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
  background: rgba(30,39,46,0.6);
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer__content {
  padding: 1.5rem;
  color: var(--text-gray);
  line-height: 1.9;
  font-size: 0.95rem;
}

/* ============================================
   页脚
   ============================================ */
.arena-footer {
  background: #0d1117;
  padding: 3rem 0 1.5rem;
  border-top: 3px solid var(--flame-red);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-col h4 {
  font-family: Impact, sans-serif;
  font-size: 1.1rem;
  color: var(--flame-red);
  margin-bottom: 1rem;
  letter-spacing: 1px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.5rem;
}

.footer-col ul li a {
  color: var(--text-gray);
  font-size: 0.9rem;
  transition: color 0.3s;
}

.footer-col ul li a:hover {
  color: var(--champion-gold);
}

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

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-gray);
  font-size: 1rem;
  transition: all 0.3s;
}

.footer-social a:hover {
  background: var(--flame-red);
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom__text {
  color: rgba(255,255,255,0.3);
  font-size: 0.8rem;
}

.footer-age-badge {
  background: var(--flame-red);
  color: #fff;
  font-family: Impact, sans-serif;
  font-size: 1.2rem;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--champion-gold);
}

.footer-payment-icons {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  align-items: center;
}

.footer-payment-icons span {
  background: rgba(255,255,255,0.05);
  padding: 0.3rem 0.8rem;
  border-radius: 4px;
  font-size: 0.75rem;
  color: var(--text-gray);
}

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

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ============================================
   面包屑导航
   ============================================ */
.breadcrumb-nav {
  padding: 1rem 0;
  background: rgba(30,39,46,0.95);
}

.breadcrumb-list {
  display: flex;
  list-style: none;
  gap: 0.5rem;
  font-size: 0.85rem;
  flex-wrap: wrap;
}

.breadcrumb-list li {
  color: var(--text-gray);
}

.breadcrumb-list li a {
  color: var(--competition-blue);
}

.breadcrumb-list li::after {
  content: '>';
  margin-left: 0.5rem;
  color: rgba(255,255,255,0.3);
}

.breadcrumb-list li:last-child::after {
  display: none;
}

.breadcrumb-list li:last-child {
  color: var(--flame-red);
}

/* ============================================
   内页通用样式
   ============================================ */
.inner-hero {
  background: linear-gradient(135deg, var(--deep-charcoal), #2d3436);
  padding: 4rem 0 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.inner-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(214,48,49,0.1) 0%, transparent 70%);
}

.inner-hero h1 {
  font-family: Impact, sans-serif;
  font-size: 2.5rem;
  color: #fff;
  position: relative;
  z-index: 1;
}

.inner-content {
  padding: var(--section-gap) 0;
}

.inner-content h2 {
  font-family: Impact, sans-serif;
  font-size: 1.8rem;
  color: var(--flame-red);
  margin: 2rem 0 1rem;
}

.inner-content h3 {
  font-size: 1.3rem;
  color: var(--champion-gold);
  margin: 1.5rem 0 0.8rem;
}

.inner-content p {
  color: var(--text-gray);
  line-height: 1.9;
  margin-bottom: 1rem;
}

.inner-content ul, .inner-content ol {
  color: var(--text-gray);
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.inner-content li {
  margin-bottom: 0.5rem;
  line-height: 1.8;
}

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

.inner-gallery img {
  border-radius: 8px;
  width: 100%;
  height: 200px;
  object-fit: cover;
  border: 1px solid rgba(214,48,49,0.2);
}

.info-box {
  background: rgba(214,48,49,0.08);
  border-left: 4px solid var(--flame-red);
  padding: 1.5rem;
  border-radius: 0 8px 8px 0;
  margin: 1.5rem 0;
}

.info-box h4 {
  color: var(--flame-red);
  margin-bottom: 0.5rem;
}

.info-box p {
  color: var(--text-gray);
}

.rtp-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

.rtp-table th {
  background: var(--flame-red);
  color: #fff;
  padding: 0.8rem 1rem;
  text-align: left;
  font-weight: 700;
}

.rtp-table td {
  padding: 0.8rem 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  color: var(--text-gray);
}

.rtp-table tr:nth-child(even) td {
  background: rgba(255,255,255,0.02);
}

@media (max-width: 768px) {
  .inner-gallery {
    grid-template-columns: 1fr 1fr;
  }
  .inner-hero h1 {
    font-size: 1.8rem;
  }
}

/* ============================================
   APP下载页
   ============================================ */
.app-download-hero {
  text-align: center;
  padding: 4rem 0;
  background: linear-gradient(135deg, var(--deep-charcoal), #2d3436);
}

.app-download-hero h1 {
  font-family: Impact, sans-serif;
  font-size: 2.5rem;
  color: #fff;
  margin-bottom: 0.5rem;
}

.app-download-hero p {
  color: var(--champion-gold);
  font-size: 1.2rem;
}

.app-qr-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  max-width: 700px;
  margin: 3rem auto;
}

.app-qr-box {
  text-align: center;
  background: var(--card-bg);
  border-radius: 12px;
  padding: 2rem;
  border: 1px solid var(--card-border);
}

.app-qr-box__qr {
  width: 180px;
  height: 180px;
  background: #fff;
  margin: 0 auto 1.5rem;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: #333;
}

.app-qr-box h3 {
  color: #fff;
  margin-bottom: 1rem;
}

.app-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin: 3rem 0;
}

.app-feature-card {
  text-align: center;
  padding: 2rem 1rem;
  background: var(--card-bg);
  border-radius: 12px;
  border: 1px solid var(--card-border);
}

.app-feature-card__icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.app-feature-card h4 {
  color: #fff;
  margin-bottom: 0.5rem;
}

.app-feature-card p {
  color: var(--text-gray);
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .app-qr-section {
    grid-template-columns: 1fr;
  }
  .app-features {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .app-features {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   滑入动画
   ============================================ */
.slide-in {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.slide-in-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ============================================
   火焰粒子效果容器
   ============================================ */
#flame-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  overflow: hidden;
}

.flame-particle {
  position: absolute;
  bottom: -10px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  animation: rise 3s ease-in infinite;
  opacity: 0;
}

@keyframes rise {
  0% {
    opacity: 0;
    transform: translateY(0) scale(1);
  }
  20% {
    opacity: 0.8;
  }
  100% {
    opacity: 0;
    transform: translateY(-300px) scale(0.3);
  }
}

/* ============================================
   数字跳动效果
   ============================================ */
.number-bounce {
  display: inline-block;
  animation: bounce-num 0.6s ease infinite alternate;
}

@keyframes bounce-num {
  0% { transform: translateY(0); }
  100% { transform: translateY(-3px); }
}