@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

/* --- 全局重置与变量 (白天版 / Light Theme) --- */
:root {
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --bg-dark: #f8f9fc;
  --panel-bg: rgba(255, 255, 255, 0.45);
  --panel-border: rgba(255, 255, 255, 0.7);
  --text-primary: #141622;
  --text-secondary: #585d77;
  --text-muted: #8c92ac;
  --primary-gradient: linear-gradient(135deg, #ff5e36, #ff2a6d);
  --secondary-gradient: linear-gradient(135deg, #8a2be2, #4a00e0);
  --btn-shadow: 0 8px 30px rgba(255, 42, 109, 0.18);
  --transition-normal: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body, html {
  width: 100%;
  height: 100%;
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- 背景发光动效层 (柔和马卡龙/淡彩白天色调) --- */
.bg-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  background-color: var(--bg-dark);
  overflow: hidden;
}

.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.5;
  will-change: transform;
  animation: floatGlow 18s infinite alternate ease-in-out;
}

.bg-glow-1 {
  width: 55vw;
  height: 55vw;
  background: radial-gradient(circle, rgba(255, 94, 54, 0.14) 0%, rgba(255, 94, 54, 0) 70%);
  top: -15%;
  left: -10%;
}

.bg-glow-2 {
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(138, 43, 226, 0.12) 0%, rgba(138, 43, 226, 0) 70%);
  bottom: -20%;
  right: -10%;
  animation-delay: -6s;
}

.bg-glow-3 {
  width: 40vw;
  height: 40vw;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.1) 0%, rgba(0, 242, 254, 0) 70%);
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -12s;
  animation-duration: 25s;
}

@keyframes floatGlow {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(8%, 10%) scale(1.15); }
  100% { transform: translate(-5%, -5%) scale(0.9); }
}

/* 粒子 Canvas 层 */
.canvas-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

#particle-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* --- 容器布局 --- */
.app-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 2rem;
  position: relative;
  z-index: 1;
}

.main-content {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 1200px;
}

/* --- 页面元素进入动画 --- */
.animate-fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

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

/* ==========================================================================
   双端响应式样式
   ========================================================================== */

/* ------------------ 电脑端 (Desktop) ------------------ */
@media (min-width: 992px) {
  .desktop-layout {
    display: grid;
    grid-template-columns: 1.1fr 1.3fr;
    gap: 5rem;
    width: 100%;
    align-items: center;
  }
  
  .mobile-layout {
    display: none;
  }

  /* 左侧：手机样机 */
  .mockup-container {
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .iphone-mockup {
    width: 320px;
    height: 640px;
    border-radius: 48px;
    border: 14px solid #1c1a24;
    background: #ffffff;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.08), 
                inset 0 0 10px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
  }

  /* 灵动岛 */
  .iphone-island {
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 95px;
    height: 25px;
    background: #000;
    border-radius: 15px;
    z-index: 10;
  }

  /* 手机屏幕内部 */
  .iphone-screen {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: 3rem 1.5rem 2rem 1.5rem;
    background: radial-gradient(circle at top, #faf9ff 0%, #e8e7ee 80%);
    position: relative;
  }

  .iphone-screen::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, rgba(255,255,255,0) 40%, rgba(255,255,255,0.4) 50%, rgba(255,255,255,0) 60%);
    transform: rotate(30deg);
    pointer-events: none;
  }

  .mock-app-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 2rem;
    text-align: center;
  }

  .mock-logo-wrapper {
    position: relative;
    margin-bottom: 1.5rem;
  }

  .mock-app-logo {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
    animation: mockLogoGlow 3s infinite alternate ease-in-out;
  }

  .mock-logo-glow {
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border-radius: 24px;
    background: var(--primary-gradient);
    z-index: -1;
    filter: blur(12px);
    opacity: 0.3;
  }

  .mock-app-name {
    font-size: 1.8rem;
    font-weight: 700;
    color: #141622;
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
  }

  .mock-app-tag {
    font-size: 0.85rem;
    padding: 2px 10px;
    background: var(--primary-gradient);
    color: #fff;
    border-radius: 20px;
    font-weight: 600;
    letter-spacing: 0.5px;
  }

  .mock-app-desc {
    margin-top: 1.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    padding: 0 1rem;
  }

  .mock-screen-footer {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
  }

  .mock-screen-btn {
    width: 100%;
    padding: 12px;
    border-radius: 12px;
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0, 0, 0, 0.06);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    text-align: center;
    backdrop-filter: blur(5px);
  }

  .mock-screen-home-bar {
    width: 110px;
    height: 4px;
    background: rgba(0, 0, 0, 0.15);
    border-radius: 2px;
    margin-top: 0.5rem;
  }

  @keyframes mockLogoGlow {
    0% { transform: translateY(0) scale(1); }
    100% { transform: translateY(-5px) scale(1.02); }
  }

  /* 右侧：下载信息区 */
  .download-panel {
    display: flex;
    flex-direction: column;
    gap: 2rem;
  }

  .app-header {
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  .app-brand {
    display: flex;
    align-items: center;
    gap: 1.5rem;
  }

  .app-logo {
    width: 90px;
    height: 90px;
    border-radius: 22px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.06);
    border: 2px solid rgba(255, 255, 255, 0.8);
  }

  .app-title-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
  }

  .app-title-row {
    display: flex;
    align-items: center;
    gap: 1rem;
  }

  .app-name {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: #141622;
  }

  .app-badge {
    font-size: 0.85rem;
    font-weight: 600;
    padding: 3px 12px;
    background: var(--primary-gradient);
    color: #fff;
    border-radius: 20px;
    box-shadow: var(--btn-shadow);
  }

  .app-meta-grid {
    display: flex;
    gap: 1.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
  }

  .app-meta-item strong {
    color: var(--text-primary);
    font-weight: 600;
  }

  .app-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 550px;
  }

  /* Glassmorphism 下载卡片 */
  .glass-card {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.04), 
                inset 0 1px 0 rgba(255, 255, 255, 0.6);
    max-width: 550px;
    display: flex;
    flex-direction: column;
    gap: 2rem;
  }

  .qr-download-section {
    display: flex;
    align-items: center;
    gap: 2rem;
  }

  .qr-code-box {
    position: relative;
    padding: 12px;
    background: #ffffff;
    border-radius: 18px;
    border: 1px solid rgba(0, 0, 0, 0.04);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
  }

  .qr-code-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(255, 42, 109, 0.15);
  }

  .qr-code-canvas {
    display: block;
    width: 150px;
    height: 150px;
  }

  .qr-tips {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
  }

  .qr-tips h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
  }

  .qr-tips p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
  }

  .btn-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
  }

  .download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    padding: 16px 20px;
    border-radius: 16px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    color: #fff;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
  }

  .download-btn-ios {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.08);
    color: var(--text-primary);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
  }

  .download-btn-ios:hover {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.15);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.05);
  }

  .download-btn-ios svg {
    color: #000;
  }

  .download-btn-android {
    background: var(--primary-gradient);
    border: none;
    box-shadow: var(--btn-shadow);
  }

  .download-btn-android:hover {
    transform: translateY(-3px);
    filter: brightness(1.05);
    box-shadow: 0 12px 35px rgba(255, 42, 109, 0.3);
  }

  .download-btn svg {
    width: 22px;
    height: 22px;
    fill: currentColor;
  }
}

/* ------------------ 手机端 (Mobile) ------------------ */
@media (max-width: 991px) {
  .desktop-layout {
    display: none;
  }

  .mobile-layout {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 480px;
    padding: 1rem 0;
  }

  .mobile-card {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-radius: 28px;
    width: 100%;
    padding: 2.5rem 1.8rem;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.04), 
                inset 0 1px 0 rgba(255, 255, 255, 0.6);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
  }

  .mobile-logo-wrapper {
    position: relative;
    margin-top: -1rem;
    margin-bottom: 1.5rem;
  }

  .mobile-app-logo {
    width: 96px;
    height: 96px;
    border-radius: 24px;
    border: 2px solid rgba(255, 255, 255, 0.8);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.06);
  }

  .mobile-logo-glow {
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border-radius: 28px;
    background: var(--primary-gradient);
    z-index: -1;
    filter: blur(15px);
    opacity: 0.35;
    animation: pulseGlow 2.5s infinite alternate ease-in-out;
  }

  @keyframes pulseGlow {
    0% { transform: scale(0.95); opacity: 0.25; }
    100% { transform: scale(1.05); opacity: 0.5; }
  }

  .mobile-app-name {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
  }

  .mobile-app-tag-row {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 1.2rem;
  }

  .mobile-app-tag {
    font-size: 0.8rem;
    font-weight: 600;
    padding: 2px 10px;
    background: var(--primary-gradient);
    color: #fff;
    border-radius: 20px;
    box-shadow: var(--btn-shadow);
  }

  .mobile-os-compatibility {
    font-size: 0.8rem;
    color: #4a00e0;
    font-weight: 600;
  }

  .mobile-app-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
  }

  /* 倒计时提示框 */
  .countdown-box {
    margin-bottom: 1.2rem;
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0, 0, 0, 0.05);
    padding: 8px 16px;
    border-radius: 12px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: none;
    align-items: center;
    gap: 6px;
  }

  .countdown-seconds {
    color: #ff2a6d;
    font-weight: 700;
  }

  /* 移动端主下载按钮 */
  .mobile-primary-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    padding: 18px 24px;
    border-radius: 18px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    color: #fff;
    background: var(--primary-gradient);
    box-shadow: var(--btn-shadow);
    transition: var(--transition-normal);
    animation: btnPulse 2s infinite ease-in-out;
  }

  .mobile-primary-btn:active {
    transform: scale(0.97);
    filter: brightness(0.95);
  }

  @keyframes btnPulse {
    0%, 100% { box-shadow: 0 8px 25px rgba(255, 42, 109, 0.2); }
    50% { box-shadow: 0 12px 35px rgba(255, 42, 109, 0.4); }
  }

  .mobile-primary-btn svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
  }

  /* 移动端次级下载按钮 (备用系统下载) */
  .mobile-secondary-btn {
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-decoration: underline;
    background: none;
    border: none;
    cursor: pointer;
  }

  /* 移动端文件参数表格 */
  .mobile-meta-grid {
    margin-top: 2rem;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    padding-top: 1.5rem;
  }

  .mobile-meta-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 0.8rem;
    color: var(--text-muted);
  }

  .mobile-meta-item span {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 600;
  }
}

/* --- 微信等应用内浏览器屏蔽引导遮罩层 (轻量明亮滤镜) --- */
.wechat-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 1000;
  display: flex;
  justify-content: flex-end;
  padding: 2rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.wechat-overlay.show {
  opacity: 1;
  visibility: visible;
}

.wechat-tip-container {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  max-width: 320px;
  gap: 1.5rem;
  position: relative;
}

.wechat-arrow {
  width: 70px;
  height: 70px;
  animation: arrowBounce 1.5s infinite ease-in-out;
}

.wechat-card {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 20px;
  padding: 1.5rem;
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 0.95rem;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
}

.wechat-card-step {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.wechat-card-step span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  background: var(--primary-gradient);
  border-radius: 50%;
  color: #fff;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 3px;
}

@keyframes arrowBounce {
  0%, 100% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(-10px) translateX(8px); }
}

/* --- 底部通用 Footer --- */
.footer {
  width: 100%;
  max-width: 1200px;
  padding-top: 2rem;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition-normal);
}

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

@media (max-width: 768px) {
  .footer {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
    padding-bottom: 1rem;
  }
}