/*
=============================================================
  999bajiapp.com - Global Stylesheet
  竞品骨架参考: telsesra.za.com (98WIN Vietnam站)
  骨架类型: 混合型首页 (Banner轮播 + 长文说明 + 重Footer)
  Style DNA:
    - layout_bias: 混合型(分发+长文SEO)
    - hero_layout: 全宽Banner轮播
    - nav_alignment: Logo居中 + 两侧按钮 + 底部导航栏
    - card_geometry: 中等圆角
    - background_treatment: 深色渐变层叠 + 分区色块
    - section_divider: 色块分区
    - shadow_density: 层叠阴影
    - icon_style: 实心图标
    - cta_emphasis: 高
    - copy_tone: 转化引导型 + 新手教育型
=============================================================
*/

/* ===== CSS Variables ===== */
:root {
  --color-primary: #1a0a2e;
  --color-primary-dark: #0d0620;
  --color-primary-mid: #2d1060;
  --color-accent: #f5c518;
  --color-accent-dark: #e0a800;
  --color-accent-orange: #ff8c00;
  --color-secondary: #7b2fff;
  --color-secondary-light: #9b5fff;
  --color-white: #ffffff;
  --color-white-80: rgba(255,255,255,0.8);
  --color-white-60: rgba(255,255,255,0.6);
  --color-white-20: rgba(255,255,255,0.2);
  --color-text-body: #e8e0f0;
  --color-text-muted: #a89bc0;
  --color-bg-card: rgba(255,255,255,0.06);
  --color-bg-card-hover: rgba(255,255,255,0.1);
  --color-border: rgba(245,197,24,0.2);
  --color-border-hover: rgba(245,197,24,0.5);
  --color-header-bg: #1a0a2e;
  --color-header-nav-bg: #120820;
  --color-footer-bg: #0d0620;
  --color-footer-mid: #120820;
  --color-section-alt: #150930;
  --color-section-dark: #0d0620;
  --color-success: #22c55e;
  --color-danger: #ef4444;

  --font-stack: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "Noto Sans Bengali", sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-xs: 12px;
  --font-size-lg: 18px;
  --font-size-xl: 22px;
  --font-size-2xl: 28px;
  --font-size-3xl: 36px;
  --font-size-4xl: 48px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 20px rgba(245,197,24,0.3);
  --shadow-glow-purple: 0 0 30px rgba(123,47,255,0.4);

  --transition: all 0.3s ease;
  --transition-fast: all 0.15s ease;

  --container-max: 1280px;
  --container-pad: 20px;
  --header-height: 70px;
  --header-nav-height: 44px;
}

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

html {
  scroll-behavior: smooth;
  font-size: var(--font-size-base);
}

body {
  font-family: var(--font-stack);
  background-color: var(--color-primary-dark);
  color: var(--color-text-body);
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--color-accent-orange);
}

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-white);
}

p {
  margin-bottom: 1em;
  color: var(--color-text-body);
}

/* ===== Container ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-primary-dark); }
::-webkit-scrollbar-thumb { background: var(--color-accent); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-accent-orange); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-family: var(--font-stack);
  font-size: var(--font-size-sm);
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: 0.3px;
}

.btn-register {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-orange) 100%);
  color: var(--color-primary-dark);
  box-shadow: 0 0 15px rgba(245,197,24,0.4);
}

.btn-register:hover {
  background: linear-gradient(135deg, var(--color-accent-orange) 0%, var(--color-accent) 100%);
  color: var(--color-primary-dark);
  box-shadow: 0 0 25px rgba(245,197,24,0.6);
  transform: translateY(-1px);
}

.btn-login {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}

.btn-login:hover {
  background: var(--color-accent);
  color: var(--color-primary-dark);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-light) 100%);
  color: var(--color-white);
  box-shadow: var(--shadow-glow-purple);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(123,47,255,0.6);
  color: var(--color-white);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 1.5px solid var(--color-white-20);
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-lg {
  padding: 14px 32px;
  font-size: var(--font-size-lg);
}

.btn-sm {
  padding: 7px 16px;
  font-size: var(--font-size-xs);
}

/* ===== Header ===== */
#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-header-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

.header-main {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

/* Logo */
.site-logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.site-logo img,
.site-logo svg {
  height: 44px;
  max-height: 44px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
}

/* Header CTA buttons */
.header-cta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

/* Mobile hamburger */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--color-white);
  flex-direction: column;
  gap: 5px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
  transition: var(--transition);
}

/* Header Nav Bar (竞品骨架: header-bottom wide-nav) */
.header-nav-bar {
  background: var(--color-header-nav-bg);
  border-top: 1px solid var(--color-border);
  height: var(--header-nav-height);
}

.header-nav-bar .container {
  height: 100%;
  display: flex;
  align-items: center;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 100%;
}

.main-nav > li {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
}

.main-nav > li > a {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 14px;
  height: 100%;
  color: var(--color-white-80);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.main-nav > li > a:hover,
.main-nav > li.active > a {
  color: var(--color-accent);
  background: rgba(245,197,24,0.08);
}

.main-nav > li > a .nav-arrow {
  font-size: 10px;
  transition: transform 0.2s;
}

.main-nav > li:hover > a .nav-arrow {
  transform: rotate(180deg);
}

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: var(--color-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: var(--transition);
  z-index: 100;
}

.main-nav > li:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown li a {
  display: block;
  padding: 10px 16px;
  color: var(--color-white-80);
  font-size: var(--font-size-sm);
  transition: var(--transition-fast);
}

.nav-dropdown li a:hover {
  color: var(--color-accent);
  background: rgba(245,197,24,0.08);
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.7);
  z-index: 998;
}

.mobile-nav-panel {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 280px;
  height: 100%;
  background: var(--color-primary);
  z-index: 999;
  overflow-y: auto;
  padding: 20px 0;
  box-shadow: var(--shadow-lg);
  transform: translateX(-100%);
  transition: transform 0.3s ease;
}

.mobile-nav-panel.open {
  transform: translateX(0);
}

.mobile-nav-panel .mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px 20px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 10px;
}

.mobile-nav-close {
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 24px;
  cursor: pointer;
  padding: 4px;
}

.mobile-nav-list li a {
  display: block;
  padding: 12px 20px;
  color: var(--color-white-80);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  transition: var(--transition-fast);
}

.mobile-nav-list li a:hover {
  color: var(--color-accent);
  background: rgba(245,197,24,0.08);
}

.mobile-nav-cta {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mobile-nav-cta .btn {
  width: 100%;
  justify-content: center;
}

/* ===== Banner / Hero ===== */
.hero-banner {
  position: relative;
  width: 100%;
  overflow: hidden;
  background: var(--color-primary-dark);
}

.hero-banner img,
.hero-banner svg {
  width: 100%;
  height: auto;
  display: block;
  max-height: 480px;
  object-fit: cover;
}

/* ===== Section Base ===== */
.section {
  padding: 60px 0;
}

.section-alt {
  background: var(--color-section-alt);
}

.section-dark {
  background: var(--color-section-dark);
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 8px;
  position: relative;
}

.section-title span {
  color: var(--color-accent);
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: var(--font-size-base);
  margin-bottom: 36px;
}

.section-header {
  margin-bottom: 36px;
}

.section-header.center {
  text-align: center;
}

/* Title underline decoration */
.title-underline {
  display: inline-block;
  position: relative;
}

.title-underline::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-orange));
  border-radius: 2px;
}

.title-underline.center::after {
  left: 50%;
  transform: translateX(-50%);
}

/* ===== Quick Entry Cards (竞品骨架: shortcut cards) ===== */
.quick-entry-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}

.quick-entry-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 12px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.quick-entry-card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.quick-entry-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  box-shadow: var(--shadow-glow-purple);
}

.quick-entry-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-white-80);
  line-height: 1.3;
}

/* ===== Feature Cards ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: var(--transition);
}

.feature-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-orange) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-glow);
}

.feature-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: 10px;
  color: var(--color-white);
}

.feature-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: 0;
}

/* ===== Game Category Cards ===== */
.game-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.game-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  text-decoration: none;
  display: block;
}

.game-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.game-card-thumb {
  width: 100%;
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--color-primary-mid), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  position: relative;
  overflow: hidden;
}

.game-card-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 50%, rgba(0,0,0,0.6) 100%);
}

.game-card-body {
  padding: 16px;
}

.game-card-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 6px;
}

.game-card-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: 12px;
  line-height: 1.5;
}

.game-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
}

.game-card-cta:hover {
  color: var(--color-accent-orange);
}

/* ===== Stats Bar ===== */
.stats-bar {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary-mid) 100%);
  padding: 30px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}

.stat-item {
  padding: 10px;
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: 900;
  color: var(--color-accent);
  display: block;
  line-height: 1.1;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-white-80);
  margin-top: 4px;
}

/* ===== Promotion Cards ===== */
.promo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.promo-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.promo-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-orange));
}

.promo-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.promo-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-orange));
  color: var(--color-primary-dark);
  font-size: var(--font-size-xs);
  font-weight: 800;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.promo-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: 8px;
}

.promo-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

/* ===== Long-form Content Area (竞品骨架: 长文说明区) ===== */
.longform-content {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
}

.longform-content h2 {
  font-size: var(--font-size-xl);
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-secondary), var(--color-primary-mid));
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  margin: 24px 0 14px;
  border-left: 4px solid var(--color-accent);
}

.longform-content h2:first-child {
  margin-top: 0;
}

.longform-content h3 {
  font-size: var(--font-size-lg);
  color: var(--color-accent);
  margin: 20px 0 10px;
}

.longform-content p {
  font-size: var(--font-size-base);
  color: var(--color-text-body);
  line-height: 1.8;
  margin-bottom: 14px;
}

.longform-content ul,
.longform-content ol {
  list-style: none;
  margin: 12px 0 16px;
  padding: 0;
}

.longform-content ul li,
.longform-content ol li {
  padding: 6px 0 6px 24px;
  position: relative;
  color: var(--color-text-body);
  font-size: var(--font-size-base);
  line-height: 1.7;
}

.longform-content ul li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-size: 14px;
}

.longform-content ol {
  counter-reset: ol-counter;
}

.longform-content ol li {
  counter-increment: ol-counter;
}

.longform-content ol li::before {
  content: counter(ol-counter) '.';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
  font-size: var(--font-size-sm);
}

.longform-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: var(--font-size-sm);
}

.longform-content table th {
  background: var(--color-secondary);
  color: var(--color-white);
  padding: 10px 14px;
  text-align: left;
  font-weight: 700;
}

.longform-content table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-body);
}

.longform-content table tr:nth-child(even) td {
  background: rgba(255,255,255,0.03);
}

.longform-content blockquote {
  border-left: 3px solid var(--color-accent);
  padding: 12px 20px;
  background: rgba(245,197,24,0.06);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 16px 0;
  font-style: italic;
  color: var(--color-text-muted);
}

/* ===== FAQ Section ===== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.open {
  border-color: var(--color-accent);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  cursor: pointer;
  font-weight: 600;
  color: var(--color-white);
  font-size: var(--font-size-base);
  gap: 12px;
  user-select: none;
}

.faq-question:hover {
  color: var(--color-accent);
}

.faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--color-accent);
  transition: transform 0.3s;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--color-accent);
  color: var(--color-primary-dark);
}

.faq-answer {
  display: none;
  padding: 0 20px 18px;
  color: var(--color-text-muted);
  font-size: var(--font-size-base);
  line-height: 1.7;
  border-top: 1px solid var(--color-border);
  padding-top: 14px;
}

.faq-item.open .faq-answer {
  display: block;
}

/* ===== YouTube Video Module ===== */
.video-section {
  padding: 60px 0;
  background: var(--color-section-alt);
}

.video-wrapper {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.video-responsive {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
}

.video-responsive iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ===== CTA Section ===== */
.cta-section {
  padding: 70px 0;
  background: linear-gradient(135deg, var(--color-primary-mid) 0%, var(--color-secondary) 50%, var(--color-primary-mid) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-section h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: 16px;
  position: relative;
}

.cta-section p {
  font-size: var(--font-size-lg);
  color: var(--color-white-80);
  margin-bottom: 32px;
  position: relative;
}

.cta-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
}

/* ===== Breadcrumb ===== */
.breadcrumb-bar {
  background: var(--color-header-nav-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 10px 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.breadcrumb-sep {
  color: var(--color-border);
}

.breadcrumb-current {
  color: var(--color-accent);
}

/* ===== Page Header ===== */
.page-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-mid) 100%);
  padding: 50px 0 40px;
  border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
  font-size: var(--font-size-3xl);
  margin-bottom: 12px;
}

.page-header p {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 600px;
  margin-bottom: 0;
}

/* ===== Article / Inner Page ===== */
.article-wrapper {
  max-width: 900px;
  margin: 0 auto;
}

.article-header {
  text-align: center;
  margin-bottom: 36px;
}

.article-header h1 {
  font-size: var(--font-size-2xl);
  margin-bottom: 12px;
}

.article-featured-img {
  width: 100%;
  border-radius: var(--radius-lg);
  margin-bottom: 28px;
  overflow: hidden;
  background: var(--color-bg-card);
  aspect-ratio: 2/1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 80px;
}

/* ===== Table of Contents ===== */
.toc-box {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 28px;
}

.toc-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.toc-list {
  list-style: none;
  counter-reset: toc-counter;
}

.toc-list li {
  counter-increment: toc-counter;
  padding: 5px 0;
}

.toc-list li::before {
  content: counter(toc-counter) '. ';
  color: var(--color-accent);
  font-weight: 700;
  font-size: var(--font-size-sm);
}

.toc-list li a {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.toc-list li a:hover {
  color: var(--color-accent);
}

/* ===== Steps / Process ===== */
.steps-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.step-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: var(--transition);
}

.step-item:hover {
  border-color: var(--color-accent);
}

.step-number {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-orange));
  color: var(--color-primary-dark);
  font-weight: 900;
  font-size: var(--font-size-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-content h4 {
  font-size: var(--font-size-base);
  margin-bottom: 6px;
  color: var(--color-white);
}

.step-content p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: 0;
}

/* ===== Contact Page ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.contact-info-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.contact-info-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: 20px;
  color: var(--color-accent);
}

.contact-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
}

.contact-item:last-child {
  border-bottom: none;
}

.contact-item-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-secondary), var(--color-secondary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.contact-item-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 3px;
}

.contact-item-value {
  font-size: var(--font-size-base);
  color: var(--color-white);
  font-weight: 500;
}

.contact-form-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.contact-form-card h3 {
  font-size: var(--font-size-xl);
  margin-bottom: 20px;
  color: var(--color-accent);
}

.form-group {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-white-80);
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-white);
  font-family: var(--font-stack);
  font-size: var(--font-size-base);
  transition: var(--transition-fast);
  outline: none;
}

.form-control:focus {
  border-color: var(--color-accent);
  background: rgba(255,255,255,0.08);
}

.form-control::placeholder {
  color: var(--color-text-muted);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.form-notice {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: 8px;
}

/* ===== Policy Pages ===== */
.policy-content {
  max-width: 860px;
  margin: 0 auto;
}

.policy-content h2 {
  font-size: var(--font-size-xl);
  color: var(--color-accent);
  margin: 28px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.policy-content h2:first-child {
  margin-top: 0;
}

.policy-content p {
  font-size: var(--font-size-base);
  color: var(--color-text-body);
  line-height: 1.8;
  margin-bottom: 14px;
}

.policy-content ul {
  list-style: none;
  margin: 10px 0 16px;
}

.policy-content ul li {
  padding: 5px 0 5px 20px;
  position: relative;
  color: var(--color-text-body);
  font-size: var(--font-size-base);
}

.policy-content ul li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

/* ===== Related Links / Internal Nav ===== */
.related-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 28px;
}

.related-link-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  text-decoration: none;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 12px;
}

.related-link-card:hover {
  border-color: var(--color-accent);
  background: var(--color-bg-card-hover);
  transform: translateY(-2px);
}

.related-link-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.related-link-text {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-white-80);
}

.related-link-card:hover .related-link-text {
  color: var(--color-accent);
}

/* ===== 404 Page ===== */
.error-page {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
}

.error-code {
  font-size: 120px;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

.error-title {
  font-size: var(--font-size-2xl);
  margin-bottom: 12px;
}

.error-desc {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  margin-bottom: 32px;
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== Footer (竞品骨架: 4列重型Footer) ===== */
#site-footer {
  background: var(--color-footer-bg);
  border-top: 1px solid var(--color-border);
}

.footer-main {
  padding: 50px 0 36px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 36px;
}

.footer-col-title {
  font-size: var(--font-size-sm);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-accent);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.footer-logo {
  margin-bottom: 14px;
}

.footer-logo img,
.footer-logo svg {
  height: 40px;
  max-height: 40px;
  width: auto;
  max-width: 160px;
}

.footer-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links li a {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer-links li a:hover {
  color: var(--color-accent);
  padding-left: 4px;
}

.footer-links li a::before {
  content: '›';
  color: var(--color-accent);
  font-size: 16px;
}

/* Footer Contact */
.footer-contact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-contact-list li {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}

.footer-contact-list li strong {
  color: var(--color-white-80);
  display: block;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

.footer-contact-list li a {
  color: var(--color-text-muted);
}

.footer-contact-list li a:hover {
  color: var(--color-accent);
}

/* Footer Bottom */
.footer-bottom {
  background: var(--color-footer-mid);
  border-top: 1px solid var(--color-border);
  padding: 16px 0;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-copyright {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: 16px;
}

.footer-bottom-links a {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.footer-bottom-links a:hover {
  color: var(--color-accent);
}

/* ===== Utility Classes ===== */
.text-center { text-align: center; }
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-text-muted); }
.text-white { color: var(--color-white); }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.mb-8 { margin-bottom: 32px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mt-8 { margin-top: 32px; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.w-full { width: 100%; }

/* Highlight box */
.highlight-box {
  background: linear-gradient(135deg, rgba(123,47,255,0.15), rgba(245,197,24,0.08));
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin: 16px 0;
}

.highlight-box p {
  margin-bottom: 0;
  font-size: var(--font-size-base);
  color: var(--color-text-body);
}

/* Warning box */
.warning-box {
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.3);
  border-left: 4px solid var(--color-danger);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin: 16px 0;
}

.warning-box p {
  margin-bottom: 0;
  color: #fca5a5;
  font-size: var(--font-size-sm);
}

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  cursor: pointer;
  border: none;
  box-shadow: var(--shadow-glow);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 500;
  text-decoration: none;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--color-accent-orange);
  transform: translateY(-3px);
  color: var(--color-primary-dark);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .quick-entry-grid { grid-template-columns: repeat(3, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .game-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .promo-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .related-links { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
    --font-size-3xl: 28px;
    --font-size-2xl: 22px;
    --font-size-xl: 18px;
  }

  .header-nav-bar { display: none; }
  .mobile-menu-btn { display: flex; }

  .quick-entry-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .feature-grid { grid-template-columns: 1fr; }
  .game-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .promo-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .related-links { grid-template-columns: 1fr; }

  .longform-content { padding: 24px 20px; }
  .section { padding: 40px 0; }
  .cta-section { padding: 50px 0; }

  .footer-bottom-inner { flex-direction: column; text-align: center; }

  .site-logo img, .site-logo svg { height: 36px; max-height: 36px; }
  .footer-logo img, .footer-logo svg { height: 34px; max-height: 34px; }

  .error-code { font-size: 80px; }
}

@media (max-width: 480px) {
  :root { --container-pad: 14px; }
  .quick-entry-grid { grid-template-columns: repeat(3, 1fr); gap: 6px; }
  .game-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .header-cta .btn { padding: 8px 14px; font-size: 12px; }
  .cta-buttons { flex-direction: column; align-items: stretch; }
  .cta-buttons .btn { justify-content: center; }
}