/* ═══════════════════════════════════════════════════════════
   AOER 奥尔射箭 — 官网设计系统
   Design Token: 与 store_app 深色主题保持一致
   ═══════════════════════════════════════════════════════════ */

/* ─── 1. Design Tokens ──────────────────────────────────── */
:root {
  /* 背景层 (Premium B&W) */
  --bg-body: #FFFFFF;
  --bg-section: #FAFAFA;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F8F9FA;
  --bg-navbar: rgba(255, 255, 255, 0.85);
  --bg-navbar-scrolled: rgba(255, 255, 255, 0.95);

  /* 文字层 */
  --text-primary: #111827;
  --text-secondary: #4B5563;
  --text-muted: #9CA3AF;

  /* 强调色与边框 */
  --accent: #000000;
  --accent-dark: #1F2937;
  --accent-glow: rgba(0, 0, 0, 0.1);
  --accent-glow-strong: rgba(0, 0, 0, 0.15);
  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-card: rgba(0, 0, 0, 0.06);

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* 间距 */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;
  --space-2xl: 96px;

  /* 阴影 */
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.06);
  --shadow-glow: 0 4px 20px rgba(0, 0, 0, 0.08);

  /* 动画 */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ─── 2. Reset & Base ───────────────────────────────────── */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px; /* 解决锚点偏移问题 */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

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

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

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

/* ─── 3. Layout ─────────────────────────────────────────── */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-2xl) 0;
  position: relative;
}

/* ─── 4. Navigation ─────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-sm) 0;
  background: transparent; /* 初始透明 */
  border-bottom: 1px solid transparent;
  transition: all var(--transition-smooth);
}

.navbar.scrolled {
  background: var(--bg-navbar-scrolled);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
}

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

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.navbar-logo {
  height: 32px;
  width: auto;
  mix-blend-mode: multiply; /* 白底变透明，完美融入背景 */
}

.navbar-title {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.5px;
}

/* 汉堡菜单按钮 (仅移动端可见) */
.navbar-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s;
}

/* 汉堡菜单打开状态的动画 */
.navbar-toggle.active .toggle-bar:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.navbar-toggle.active .toggle-bar:nth-child(2) {
  opacity: 0;
}
.navbar-toggle.active .toggle-bar:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
}

.navbar-links a {
  display: flex;
  align-items: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.navbar-links a:hover {
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.04);
}

/* Nav Dropdown */
.nav-dropdown {
  position: relative;
  display: flex;
  align-items: center;
}

.nav-dropdown-btn {
  display: flex;
  align-items: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.nav-dropdown:hover .nav-dropdown-btn {
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.04);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 8px;
  background: var(--bg-navbar-scrolled);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
  padding: var(--space-xs);
  min-width: 180px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px) scale(0.95);
  transform-origin: top right;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
  text-decoration: none;
}

.dropdown-item:hover {
  background: rgba(0, 0, 0, 0.04);
}

.item-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* ─── 5. Hero Section ───────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 80px;
  position: relative;
  overflow: hidden;
}

/* 弥散光球 —— 为白色 Hero 注入呼吸感与纵深 */
.hero::after {
  content: '';
  position: absolute;
  width: 800px;
  height: 800px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(0, 0, 0, 0.035) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  animation: breathe 6s ease-in-out infinite alternate;
}

@keyframes breathe {
  0% { transform: translate(-50%, -50%) scale(1); opacity: 0.6; }
  100% { transform: translate(-50%, -50%) scale(1.15); opacity: 1; }
}

/* 背景装饰 (已由 bg-canvas 接管) */
#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.2rem);
  font-weight: 800;
  letter-spacing: 0px;
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, #111827 0%, #6B7280 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeInUp 0.8s 0.2s var(--transition-slow) both;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto var(--space-lg);
  animation: fadeInUp 0.8s 0.4s var(--transition-slow) both;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--bg-body);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
  animation: fadeInUp 0.8s 0.1s var(--transition-slow) both;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: #111827;
  border-radius: 50%;
  position: relative;
}

.badge-dot::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: rgba(17, 24, 39, 0.3);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.5); opacity: 1; }
  100% { transform: scale(2.5); opacity: 0; }
}

/* ─── 6. Download Buttons ───────────────────────────────── */
.download-group {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s 0.6s var(--transition-slow) both;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-smooth);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn-download::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity var(--transition-smooth);
}

.btn-download:hover::before {
  opacity: 1;
}

.btn-download--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #FFFFFF;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-download--primary::before {
  background: linear-gradient(135deg, #333333, var(--accent));
}

.btn-download--primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 32px var(--accent-glow-strong);
  color: #FFFFFF;
}

.btn-download--secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.btn-download--secondary::before {
  background: var(--bg-card-hover);
}

.btn-download--secondary:hover {
  transform: translateY(-2px) scale(1.02);
  border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  color: var(--text-primary);
}

/* SVG 图标样式 (替代 Emoji) */
.btn-icon-svg {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

.btn-text-group {
  text-align: left;
  line-height: 1.3;
  position: relative;
  z-index: 1;
}

.btn-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 400;
  opacity: 0.8;
}

.btn-store-name {
  display: block;
  font-size: 1rem;
  font-weight: 700;
}

/* ─── 7. Features Section ───────────────────────────────── */
.features {
  background: var(--bg-section);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: var(--space-sm);
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.section-desc {
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto;
  font-size: 0.95rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition-smooth);
}

.feature-card:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  border-color: var(--border-subtle);
  box-shadow: var(--shadow-card);
}

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

/* 卡片追光效果 (鼠标跟随光晕) */
.feature-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(0, 0, 0, 0.04),
    transparent 40%
  );
  border-radius: inherit;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

.feature-card:hover::after {
  opacity: 1;
}

/* 功能图标容器 (替代 Emoji) */
.feature-icon-box {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--bg-section);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  transition: all var(--transition-smooth);
}

.feature-card:hover .feature-icon-box {
  background: var(--text-primary);
  color: var(--bg-body);
  border-color: var(--text-primary);
}

.feature-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.feature-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ─── 8. CTA Section ────────────────────────────────────── */
.cta {
  text-align: center;
  position: relative;
}

/* 背景装饰已移除，由 Canvas 统一接管 */

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.cta-desc {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  font-size: 0.95rem;
}

/* ─── 9. Footer ─────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border-card);
  padding: var(--space-lg) 0;
  background: var(--bg-body);
}

.footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.footer-logo {
  height: 20px;
  mix-blend-mode: multiply;
  opacity: 0.6;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

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

/* ─── 10. Scroll Animations (Progressive Enhancement) ─── */
.reveal {
  /* 默认可见，防止 JS 失败导致白屏 */
  transition: all var(--transition-slow);
}

.js-enabled .reveal {
  opacity: 0;
  transform: translateY(30px);
}

.js-enabled .reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── 11. Page: Privacy & Support ───────────────────────── */
.page-header {
  padding-top: 120px;
  padding-bottom: var(--space-lg);
  text-align: center;
  background: var(--bg-section);
  border-bottom: 1px solid var(--border-card);
}

.page-content {
  max-width: 780px;
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}

.page-content h2 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
  color: var(--accent);
}

.page-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: var(--space-md);
  margin-bottom: var(--space-xs);
}

.page-content p,
.page-content li {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: var(--space-sm);
}

.page-content ul {
  padding-left: var(--space-md);
}

.page-content li {
  margin-bottom: var(--space-xs);
}

.page-content .contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-top: var(--space-md);
}

.page-content .contact-card p {
  margin-bottom: var(--space-xs);
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  margin-bottom: var(--space-sm);
  transition: border-color var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--border-subtle);
}

.faq-item h3 {
  margin-top: 0;
  color: var(--text-primary);
}

.faq-item p {
  margin-bottom: 0;
}

/* ─── 12. Responsive ────────────────────────────────────── */
@media (max-width: 1023px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .features-grid {
    grid-template-columns: 1fr;
  }

  .download-group {
    flex-direction: column;
    align-items: center;
  }

  .btn-download {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }

  /* 汉堡菜单按钮显示 */
  .navbar-toggle {
    display: flex;
  }

  /* 移动端抽屉导航 */
  .navbar-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-navbar-scrolled);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: column;
    padding: var(--space-sm) var(--space-md);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
  }

  .navbar-links.open {
    display: flex;
  }

  .navbar-links li {
    width: 100%;
  }

  .navbar-links a {
    padding: 12px var(--space-sm);
    border-radius: var(--radius-sm);
    width: 100%;
  }

  /* 移动端下拉菜单适配 */
  .nav-dropdown {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: transparent;
    backdrop-filter: none;
    padding: 0 0 0 var(--space-sm);
    margin-top: 0;
    min-width: auto;
  }

  .nav-dropdown-btn {
    padding: 12px var(--space-sm);
    width: 100%;
  }

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

  .section {
    padding: var(--space-xl) 0;
  }

  /* 隐私政策/技术支持页面的移动端适配 */
  .page-header {
    padding-top: 100px;
    padding-bottom: var(--space-md);
  }

  .page-content {
    padding: var(--space-lg) var(--space-sm);
  }
}