/* ==========================================
   CSS 注释系统 - 技术教程下载页面
   ========================================== */

/* CSS 自定义属性 */
:root {
  /* 深色主题 - 科技风格 */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #111116;
  --color-bg-tertiary: #1a1a1f;
  --color-text-primary: #ffffff;
  --color-text-secondary: #a0a0a0;
  --color-text-tertiary: #6b6b6b;
  --color-accent: #9abae9;
  --color-accent-light: #c9f0fa;
  --color-accent-hover: #7da8d9;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-light: rgba(255, 255, 255, 0.05);
  
  /* 渐变效果 - 科技风格 */
  --gradient-primary: linear-gradient(135deg, #9abae9 0%, #c9f0fa 50%, #9abae9 100%);
  --gradient-glow: radial-gradient(circle, rgba(154, 186, 233, 0.3) 0%, transparent 70%);
  --gradient-shimmer: linear-gradient(90deg, 
    transparent 0%, 
    rgba(201, 240, 250, 0.1) 25%, 
    rgba(154, 186, 233, 0.2) 50%, 
    rgba(201, 240, 250, 0.1) 75%, 
    transparent 100%);
  
  /* 间距系统 */
  --space-xs: 0.5rem;    /* 8px */
  --space-sm: 1rem;      /* 16px */
  --space-md: 1.5rem;    /* 24px */
  --space-lg: 2rem;      /* 32px */
  --space-xl: 3rem;      /* 48px */
  --space-2xl: 4rem;     /* 64px */
  --space-3xl: 6rem;     /* 96px */
  
  /* 圆角系统 */
  --radius-sm: 0.5rem;   /* 8px */
  --radius-md: 0.75rem;  /* 12px */
  --radius-lg: 1rem;     /* 16px */
  --radius-xl: 1.5rem;   /* 24px */
  
  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
  
  /* 阴影 - 科技风格 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 32px rgba(154, 186, 233, 0.3);
  
  /* 动画 */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

.tutorial-download-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* ==========================================
   布局容器
   ========================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  /* 隐藏滚动条但保持功能 */
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE and Edge */
}

/* 隐藏 Webkit 浏览器（Chrome, Safari, Edge）的滚动条 */
html::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  /* 隐藏滚动条但保持功能 */
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE and Edge */
}

/* 隐藏 Webkit 浏览器（Chrome, Safari, Edge）的滚动条 */
body::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-base);
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul {
  list-style: none;
}

/* ==========================================
   通用组件
   ========================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section-title {
  font-size: 2.75rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #c9f0fa 0%, #9abae9 50%, #c9f0fa 100%);
  background-size: 200% 200%;
  animation: gradient-shift 3s ease infinite;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
  line-height: 1.2;
  position: relative;
}

.section-description {
  text-align: center;
  color: rgba(160, 160, 160, 0.9);
  font-size: 1.0625rem;
  margin-bottom: 4rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
  letter-spacing: 0.01em;
}

/* 按钮样式 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  border-radius: 0.75rem;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  text-align: center;
  will-change: transform;
  letter-spacing: 0.01em;
  position: relative;
  overflow: hidden;
}

.btn svg {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
}

.btn:hover svg {
  transform: translateY(2px);
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

.btn-primary {
  background: linear-gradient(135deg, #9abae9 0%, #c9f0fa 50%, #9abae9 100%);
  background-size: 200% 200%;
  animation: gradient-shift 3s ease infinite;
  color: #0a0a0f;
  box-shadow: 
    0 4px 16px rgba(154, 186, 233, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(201, 240, 250, 0.3);
  font-weight: 700;
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--gradient-shimmer);
  animation: shimmer 2s infinite;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 
    0 8px 24px rgba(154, 186, 233, 0.6),
    0 0 0 1px rgba(201, 240, 250, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  color: #0a0a0f;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(154, 186, 233, 0.5);
  transform: translateY(-2px);
  color: white;
  box-shadow: 
    0 4px 16px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover svg {
  transform: scale(1.1);
}

/* ==========================================
   导航栏
   ========================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 15, 0.7);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.9);
  box-shadow: 
    0 4px 24px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.03);
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

.navbar-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-sm) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.navbar-logo {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background-color: #ffffff;
  padding: 2px;
}

.navbar-title {
  font-size: 1.125rem;
  font-weight: 600;
}

.navbar-menu {
  display: flex;
  gap: var(--space-xl);
}

.navbar-menu a {
  font-weight: 500;
  position: relative;
  padding: var(--space-xs) 0;
  transition: color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  letter-spacing: 0.01em;
}

.navbar-menu a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #9abae9, #c9f0fa);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(154, 186, 233, 0.6);
}

.navbar-menu a:hover {
  color: #ffffff;
}

.navbar-menu a:hover::after {
  width: 100%;
}

.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--space-xs);
}

.navbar-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: all var(--transition-base);
}

/* ==========================================
   Hero 区域
   ========================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: var(--space-3xl) var(--space-lg);
}

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

.hero-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.5;
}

.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(154, 186, 233, 0.12) 0%, rgba(201, 240, 250, 0.06) 50%, transparent 70%);
  border-radius: 50%;
  filter: blur(120px);
  animation: glow-pulse 4s ease-in-out infinite;
}

.particles-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.mouse-trail-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9997;
  mix-blend-mode: screen;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.mouse-glow {
  position: fixed;
  width: 400px;
  height: 400px;
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 9999;
  mix-blend-mode: screen;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.mouse-glow::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  transform: translate(-50%, -50%);
  background: radial-gradient(
    ellipse 200px 80px at center,
    rgba(201, 240, 250, 0.15) 0%,
    rgba(154, 186, 233, 0.1) 30%,
    rgba(154, 186, 233, 0.05) 60%,
    transparent 100%
  );
  filter: blur(25px);
}

.mouse-glow::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 60px;
  height: 60px;
  transform: translate(-50%, -50%);
  background: radial-gradient(
    circle,
    rgba(201, 240, 250, 0.2) 0%,
    rgba(154, 186, 233, 0.12) 40%,
    transparent 70%
  );
  filter: blur(15px);
}

.trail-dot {
  position: fixed;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  mix-blend-mode: screen;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.trail-1 {
  background: radial-gradient(circle, rgba(201, 240, 250, 0.3), transparent);
  box-shadow: 0 0 12px rgba(201, 240, 250, 0.2);
}

.trail-2 {
  background: radial-gradient(circle, rgba(201, 240, 250, 0.2), transparent);
  box-shadow: 0 0 10px rgba(201, 240, 250, 0.15);
}

.trail-3 {
  background: radial-gradient(circle, rgba(154, 186, 233, 0.18), transparent);
  box-shadow: 0 0 8px rgba(154, 186, 233, 0.12);
}

.trail-4 {
  background: radial-gradient(circle, rgba(154, 186, 233, 0.12), transparent);
  box-shadow: 0 0 6px rgba(154, 186, 233, 0.08);
}

@keyframes pulse {
  0%, 100% {
    opacity: 0.5;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    opacity: 0.8;
    transform: translate(-50%, -50%) scale(1.1);
  }
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

@keyframes gradient-shift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

@keyframes glow-pulse {
  0%, 100% {
    opacity: 0.3;
    filter: blur(120px);
  }
  50% {
    opacity: 0.5;
    filter: blur(140px);
  }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
}

.hero-title {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.hero-title-main {
  font-size: 4.5rem;
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(135deg, #ffffff 0%, #c9f0fa 50%, #9abae9 100%);
  background-size: 200% 200%;
  animation: gradient-shift 4s ease infinite;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.03em;
  text-shadow: 0 0 80px rgba(154, 186, 233, 0.4);
}

.hero-title-sub {
  font-size: 1.625rem;
  font-weight: 400;
  color: rgba(160, 160, 160, 0.95);
  letter-spacing: 0.01em;
}

.hero-description {
  font-size: 1.1875rem;
  color: rgba(160, 160, 160, 0.85);
  margin-bottom: var(--space-lg);
  line-height: 1.8;
  letter-spacing: 0.01em;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.hero-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
  font-size: 0.875rem;
  color: rgba(160, 160, 160, 0.7);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 0.5rem;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}

.meta-item svg {
  width: 16px;
  height: 16px;
  opacity: 0.7;
}

.meta-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(154, 186, 233, 0.3);
  color: rgba(200, 200, 200, 0.9);
  transform: translateY(-1px);
}

.meta-item:hover svg {
  opacity: 1;
}

.meta-filing {
  background: linear-gradient(135deg, rgba(154, 186, 233, 0.08), rgba(201, 240, 250, 0.08));
  border: 1px solid rgba(154, 186, 233, 0.2);
  position: relative;
  overflow: hidden;
  transform: translateZ(0);
  z-index: 0;
  color: rgba(235, 245, 255, 0.92);
  text-shadow: 0 2px 6px rgba(6, 10, 18, 0.65);
}

.meta-filing > * {
  position: relative;
  z-index: 1;
}

.meta-filing::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    90deg,
    rgba(201, 240, 250, 0) 0%,
    rgba(201, 240, 250, 0.2) 20%,
    rgba(201, 240, 250, 0.95) 45%,
    rgba(154, 186, 233, 0.35) 50%,
    rgba(201, 240, 250, 0.2) 55%,
    rgba(201, 240, 250, 0) 80%
  );
  background-size: 240% 100%;
  background-position: 0% 50%;
  opacity: 0.35;
  mix-blend-mode: screen;
  animation: filing-border-scan 2.8s ease-in-out infinite alternate;
  will-change: background-position;
  pointer-events: none;
}

.meta-filing svg {
  opacity: 0.9;
  filter: drop-shadow(0 2px 6px rgba(6, 10, 18, 0.65));
}

.meta-filing::after {
  content: '';
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  background: radial-gradient(circle at 20% 20%, rgba(201, 240, 250, 0.16), transparent 60%);
  opacity: 0.6;
  pointer-events: none;
}

.meta-filing:hover {
  background: linear-gradient(135deg, rgba(154, 186, 233, 0.12), rgba(201, 240, 250, 0.12));
  border-color: rgba(154, 186, 233, 0.3);
}

@keyframes filing-border-scan {
  0% {
    background-position: -80% 50%;
  }
  100% {
    background-position: 180% 50%;
  }
}

.meta-divider {
  color: rgba(255, 255, 255, 0.2);
  font-weight: 300;
}

.hero-miniprogram-pitch {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
}

.hero-miniprogram-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: rgba(7, 193, 96, 0.98);
  background: linear-gradient(135deg, rgba(7, 193, 96, 0.15), rgba(7, 193, 96, 0.08));
  border: 1px solid rgba(7, 193, 96, 0.35);
  border-radius: 2rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.hero-miniprogram-text {
  font-size: 1rem;
  color: rgba(200, 220, 240, 0.9);
  letter-spacing: 0.01em;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

.btn-miniprogram {
  background: linear-gradient(135deg, rgba(7, 193, 96, 0.9), rgba(6, 170, 84, 0.95));
  border-color: rgba(7, 193, 96, 0.5);
  color: #fff;
  box-shadow: 0 4px 20px rgba(7, 193, 96, 0.35);
}

.btn-miniprogram:hover {
  background: linear-gradient(135deg, rgba(7, 193, 96, 1), rgba(6, 170, 84, 1));
  border-color: rgba(7, 193, 96, 0.7);
  color: #fff;
  box-shadow: 0 6px 28px rgba(7, 193, 96, 0.45);
  transform: translateY(-2px);
}

/* ==========================================
   下载区域
   ========================================== */

.download {
  padding: var(--space-3xl) 0;
  background: var(--color-bg-secondary);
}

/* 小程序英雄区域 */
.miniprogram-hero {
  margin-bottom: var(--space-2xl);
}

.miniprogram-hero-inner {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  background: linear-gradient(160deg, rgba(7, 193, 96, 0.06) 0%, rgba(7, 193, 96, 0.02) 40%, rgba(154, 186, 233, 0.04) 100%);
  border: 1px solid rgba(7, 193, 96, 0.2);
  border-radius: 1.5rem;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

.miniprogram-hero-label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: rgba(7, 193, 96, 0.95);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.5rem;
}

.miniprogram-hero-title {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.miniprogram-hero-desc {
  font-size: 1rem;
  color: rgba(160, 160, 160, 0.9);
  line-height: 1.6;
  margin: 0 0 var(--space-xl);
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
}

.miniprogram-hero-qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.miniprogram-hero-qr-img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.miniprogram-hero-qr-hint {
  font-size: 0.9375rem;
  color: rgba(160, 160, 160, 0.85);
  margin: 0;
}

.download-divider-text {
  font-size: 1rem;
  color: rgba(160, 160, 160, 0.6);
  text-align: center;
  margin: 0 0 var(--space-xl);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  max-width: 800px;
  margin: 0 auto;
}

/* ==========================================
   使用指南区域
   ========================================== */

.guide {
  padding: var(--space-3xl) 0;
  background:
    radial-gradient(circle at 15% 0%, rgba(154, 186, 233, 0.14), transparent 42%),
    radial-gradient(circle at 85% 100%, rgba(201, 240, 250, 0.08), transparent 36%),
    #0e121c;
  border-top: 1px solid rgba(154, 186, 233, 0.12);
  border-bottom: 1px solid rgba(154, 186, 233, 0.12);
}

.guide-description {
  margin-bottom: var(--space-2xl);
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-lg);
}

.guide-card {
  padding: 1.35rem;
  border-radius: 1.25rem;
  border: 1px solid rgba(154, 186, 233, 0.18);
  background: linear-gradient(160deg, rgba(18, 24, 36, 0.92), rgba(12, 17, 28, 0.96));
  box-shadow: 0 16px 45px rgba(0, 0, 0, 0.3);
}

.guide-card h3 {
  font-size: 1.18rem;
  color: rgba(201, 240, 250, 0.96);
  margin: 0 0 0.65rem;
  line-height: 1.45;
}

.guide-card-ios {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-xl);
  align-items: center;
  background: linear-gradient(140deg, rgba(154, 186, 233, 0.2), rgba(18, 24, 36, 0.92));
  border-color: rgba(201, 240, 250, 0.3);
}

.guide-card-label {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  font-size: 0.8rem;
  color: rgba(201, 240, 250, 0.95);
  background: rgba(201, 240, 250, 0.14);
  border: 1px solid rgba(201, 240, 250, 0.3);
  margin-bottom: 0.65rem;
}

.guide-steps {
  margin: 0 0 0.75rem 1.15rem;
  color: rgba(186, 198, 214, 0.95);
  line-height: 1.6;
}

.guide-steps li {
  margin-bottom: 0.25rem;
}

.guide-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.guide-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0.52rem 0.9rem;
  border-radius: 0.75rem;
  border: 1px solid rgba(154, 186, 233, 0.32);
  background: rgba(154, 186, 233, 0.14);
  color: rgba(201, 240, 250, 0.95);
  font-size: 0.925rem;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-base);
}

.guide-actions a:hover {
  color: #ffffff;
  border-color: rgba(201, 240, 250, 0.58);
  background: rgba(154, 186, 233, 0.24);
  transform: translateY(-1px);
}

.guide-card-qr {
  text-align: center;
}

.guide-qr-img {
  width: 170px;
  height: 170px;
  border-radius: 0.95rem;
  object-fit: cover;
  border: 1px solid rgba(255, 255, 255, 0.24);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.35);
}

.guide-card-qr p {
  margin-top: 0.7rem;
  color: rgba(186, 198, 214, 0.88);
  font-size: 0.875rem;
}

.guide-command {
  margin-bottom: 0.6rem;
}

.guide-command code {
  display: block;
  padding: 0.65rem 0.85rem;
  border-radius: 0.75rem;
  font-size: 0.875rem;
  background: rgba(6, 10, 18, 0.82);
  border: 1px solid rgba(154, 186, 233, 0.28);
  color: rgba(201, 240, 250, 0.92);
  word-break: break-all;
}

.guide-note {
  margin-top: 0.55rem;
  color: rgba(186, 198, 214, 0.9);
  font-size: 0.88rem;
  line-height: 1.55;
}

/* ==========================================
   版本发布区域
   ========================================== */

.versions {
  padding: var(--space-3xl) 0;
  background:
    radial-gradient(circle at 12% 0%, rgba(154, 186, 233, 0.09), transparent 36%),
    radial-gradient(circle at 90% 100%, rgba(201, 240, 250, 0.08), transparent 36%),
    #0c1320;
  border-top: 1px solid rgba(154, 186, 233, 0.08);
  border-bottom: 1px solid rgba(154, 186, 233, 0.08);
}

.versions .container {
  max-width: 1320px;
  margin: 0 auto;
  padding-left: clamp(18px, 2.2vw, 32px);
  padding-right: clamp(18px, 2.2vw, 32px);
}

.versions-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.versions-header .section-description {
  margin-bottom: 0.75rem;
}

.versions-intro {
  margin: 0 auto;
  color: rgba(188, 201, 218, 0.9);
  font-size: 0.98rem;
  line-height: 1.75;
}

.versions-rail {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  align-items: stretch;
}

.version-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 1.05rem 0.96rem 1.35rem;
  border-radius: 0.85rem;
  border: 1px solid rgba(166, 188, 214, 0.18);
  background: linear-gradient(180deg, rgba(19, 28, 42, 0.84), rgba(14, 21, 33, 0.96));
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.version-card.is-active {
  border-color: rgba(201, 240, 250, 0.52);
  box-shadow: 0 14px 30px rgba(12, 22, 37, 0.38);
  background: linear-gradient(180deg, rgba(40, 55, 78, 0.9), rgba(16, 26, 40, 0.96));
}

.version-card.is-active::before {
  content: '当前推荐';
  position: absolute;
  top: 0;
  right: 0;
  padding: 0.28rem 0.72rem 0.26rem 0.66rem;
  border-radius: 0 0.85rem 0 0.72rem;
  font-size: 0.66rem;
  letter-spacing: 0.03em;
  color: rgba(214, 233, 255, 0.96);
  background: linear-gradient(135deg, rgba(154, 186, 233, 0.26), rgba(154, 186, 233, 0.12));
  border-left: 1px solid rgba(174, 206, 238, 0.45);
  border-bottom: 1px solid rgba(174, 206, 238, 0.38);
  box-shadow: inset 0 1px 0 rgba(220, 238, 255, 0.18);
  font-weight: 700;
}

.version-watermark {
  position: absolute;
  right: 0.72rem;
  bottom: 0.62rem;
  font-size: 1.42rem;
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: 0;
  white-space: nowrap;
  color: rgba(194, 216, 240, 0.14);
  pointer-events: none;
  z-index: 2;
}

.version-card.is-active .version-watermark {
  color: rgba(214, 234, 255, 0.2);
}

.version-card-top {
  margin-bottom: 0.6rem;
  padding-right: 3.4rem;
  border-bottom: 1px solid rgba(163, 187, 214, 0.14);
  padding-bottom: 0.55rem;
  position: relative;
  z-index: 1;
}

.version-card-label {
  margin: 0 0 0.28rem;
  font-size: 0.76rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: rgba(164, 190, 219, 0.76);
}

.version-card-title {
  margin: 0 0 0.38rem;
  font-size: 1.04rem;
  color: rgba(234, 243, 255, 0.96);
  line-height: 1.4;
  min-height: 2.55em;
}

.version-card-tagline {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.55;
  color: rgba(176, 191, 209, 0.84);
  min-height: 2.7em;
}

.version-highlights {
  margin: 0;
  margin-top: 0.12rem;
  padding: 0 2.35rem 0.35rem 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.44rem;
  position: relative;
  z-index: 1;
}

.version-highlight-item {
  position: relative;
  color: rgba(214, 226, 241, 0.94);
  font-size: 0.9rem;
  line-height: 1.6;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.36rem;
  padding-left: 0.85rem;
}

.version-highlight-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.62rem;
  width: 0.26rem;
  height: 0.26rem;
  border-radius: 999px;
  background: rgba(175, 203, 233, 0.9);
  box-shadow: none;
}

.version-highlight-text {
  flex: 1;
}

.version-highlight-item.is-new .version-highlight-text {
  font-weight: 600;
  color: rgba(226, 237, 251, 0.98);
}

.version-new-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.02rem 0.34rem;
  border-radius: 999px;
  font-size: 0.66rem;
  line-height: 1.2;
  color: rgba(237, 187, 104, 0.98);
  font-weight: 800;
  letter-spacing: 0.02em;
  background: rgba(237, 187, 104, 0.14);
  border: 1px solid rgba(237, 187, 104, 0.4);
  flex-shrink: 0;
}

.version-toggle-btn {
  margin-top: auto;
  align-self: flex-start;
  border: 1px solid rgba(154, 186, 233, 0.28);
  background: rgba(154, 186, 233, 0.08);
  color: rgba(192, 216, 240, 0.92);
  border-radius: 999px;
  padding: 0.2rem 0.66rem;
  font-size: 0.72rem;
  cursor: pointer;
  transition: all var(--transition-base);
}

.version-toggle-btn:hover {
  color: rgba(235, 244, 255, 0.96);
  border-color: rgba(189, 218, 248, 0.54);
  background: rgba(154, 186, 233, 0.16);
}

.version-toggle-btn {
  display: none;
}

.download-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0.01) 100%);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 1.25rem;
  padding: 3rem 2.5rem;
  text-align: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  will-change: transform;
  position: relative;
  overflow: hidden;
}

.download-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(154, 186, 233, 0.5), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.download-card:hover {
  transform: translateY(-6px);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.02) 100%);
  border-color: rgba(154, 186, 233, 0.4);
  box-shadow: 
    0 12px 40px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(154, 186, 233, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

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

.download-icon {
  width: 96px;
  height: 96px;
  margin: 0 auto 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.download-icon::before {
  content: '';
  position: absolute;
  inset: -20px;
  background: radial-gradient(circle, rgba(154, 186, 233, 0.2), transparent 70%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.download-icon svg {
  width: 72px;
  height: 72px;
  filter: drop-shadow(0 4px 16px rgba(154, 186, 233, 0.5));
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  z-index: 1;
}

.download-card:hover .download-icon::before {
  opacity: 1;
}

.download-card:hover .download-icon svg {
  transform: scale(1.08) translateY(-4px);
  filter: drop-shadow(0 8px 32px rgba(154, 186, 233, 0.7));
}

.download-card h3 {
  font-size: 1.625rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.download-card p {
  color: rgba(160, 160, 160, 0.9);
  margin-bottom: 2rem;
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
}

/* ==========================================
   功能特性区域
   ========================================== */

.features {
  padding: var(--space-3xl) 0;
  position: relative;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: 1400px;
  margin: 0 auto;
}

.feature-card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.02) 0%, rgba(255, 255, 255, 0.01) 100%);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 1.25rem;
  padding: 2rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  opacity: 0;
  transform: translateY(20px);
  will-change: transform, opacity;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(154, 186, 233, 0.5), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.feature-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 1.25rem;
  padding: 1px;
  background: linear-gradient(135deg, rgba(154, 186, 233, 0.2), rgba(201, 240, 250, 0.2));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.feature-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.feature-card:hover {
  transform: translateY(-4px);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.02) 100%);
  border-color: rgba(154, 186, 233, 0.4);
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(154, 186, 233, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

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

.feature-number {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, rgba(154, 186, 233, 0.2), rgba(201, 240, 250, 0.2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-family: var(--font-mono);
  letter-spacing: -0.05em;
  transition: all 0.4s ease;
}

.feature-card:hover .feature-number {
  background: linear-gradient(135deg, rgba(154, 186, 233, 0.5), rgba(201, 240, 250, 0.5));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transform: scale(1.05);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: linear-gradient(135deg, rgba(154, 186, 233, 0.1), rgba(201, 240, 250, 0.1));
  border: 1px solid rgba(154, 186, 233, 0.2);
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature-icon::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(154, 186, 233, 0.3), transparent 70%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.feature-icon svg {
  width: 32px;
  height: 32px;
  stroke: url(#feature-gradient);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 2px 8px rgba(154, 186, 233, 0.4));
}

.feature-card:hover .feature-icon {
  background: linear-gradient(135deg, rgba(154, 186, 233, 0.2), rgba(201, 240, 250, 0.2));
  border-color: rgba(154, 186, 233, 0.4);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 
    0 8px 24px rgba(154, 186, 233, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

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

.feature-card:hover .feature-icon svg {
  transform: scale(1.05);
  filter: drop-shadow(0 4px 12px rgba(154, 186, 233, 0.6));
}

.feature-title {
  font-size: 1.375rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
  transition: color 0.3s ease;
}

.feature-card:hover .feature-title {
  color: #ffffff;
}

.feature-description {
  color: rgba(160, 160, 160, 0.9);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.feature-tags span {
  padding: 0.5rem 1rem;
  background: rgba(154, 186, 233, 0.08);
  border: 1px solid rgba(154, 186, 233, 0.15);
  border-radius: 0.5rem;
  font-size: 0.8125rem;
  color: rgba(160, 160, 160, 0.95);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-weight: 500;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.feature-card:hover .feature-tags span {
  background: rgba(154, 186, 233, 0.15);
  border-color: rgba(154, 186, 233, 0.3);
  color: rgba(200, 200, 200, 1);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(154, 186, 233, 0.2);
}

/* ==========================================
   联系我们区域
   ========================================== */

.contact {
  padding: var(--space-3xl) 0;
  background: var(--color-bg-secondary);
}

.qr-container {
  display: flex;
  justify-content: center;
  align-items: center;
}

.qr-card-horizontal {
  max-width: 900px;
  width: 100%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 1.5rem;
  padding: 3rem;
  display: flex;
  align-items: center;
  gap: 3rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
}

.qr-card-horizontal::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(154, 186, 233, 0.5), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.qr-card-horizontal:hover {
  transform: translateY(-8px);
  border-color: rgba(154, 186, 233, 0.3);
  box-shadow: 
    0 16px 48px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(154, 186, 233, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.qr-card-horizontal:hover::before {
  opacity: 1;
}

.qr-image-wrapper {
  flex-shrink: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 1.25rem;
  padding: 1.5rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
}

.qr-image-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(154, 186, 233, 0.4), transparent);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.qr-card-horizontal:hover .qr-image-wrapper {
  transform: scale(1.02);
  border-color: rgba(154, 186, 233, 0.3);
  box-shadow: 
    0 12px 40px rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(154, 186, 233, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.qr-card-horizontal:hover .qr-image-wrapper::before {
  opacity: 1;
}

.qr-image {
  width: 220px;
  height: 220px;
  border-radius: 0.75rem;
  transition: all 0.3s ease;
  display: block;
}

.qr-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: left;
}

.qr-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, rgba(154, 186, 233, 0.15), rgba(201, 240, 250, 0.15));
  border: 1px solid rgba(154, 186, 233, 0.2);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.5rem;
}

.qr-icon svg {
  width: 32px;
  height: 32px;
  color: rgba(154, 186, 233, 0.9);
}

.qr-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0;
  letter-spacing: -0.01em;
}

.qr-description {
  font-size: 1rem;
  color: rgba(160, 160, 160, 0.8);
  margin: 0;
  line-height: 1.6;
}

.qr-meta {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.qr-meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: rgba(160, 160, 160, 0.7);
  padding: 0.5rem 0.75rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 0.5rem;
  transition: all 0.3s ease;
}

.qr-meta-item svg {
  width: 16px;
  height: 16px;
  opacity: 0.7;
  flex-shrink: 0;
}

.qr-card-horizontal:hover .qr-meta-item {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(154, 186, 233, 0.15);
  color: rgba(180, 180, 180, 0.9);
}

/* ==========================================
   页脚
   ========================================== */

.footer {
  padding: var(--space-2xl) 0 var(--space-lg);
  border-top: 1px solid var(--color-border-light);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
}

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

.footer-logo {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background-color: #ffffff;
  padding: 2px;
}

.footer-brand p {
  color: var(--color-text-secondary);
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

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

.footer-filing {
  text-align: center;
  padding: var(--space-md) 0;
  margin-top: var(--space-lg);
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.footer-filing p {
  color: var(--color-text-tertiary);
  font-size: 0.8125rem;
  line-height: 1.8;
  margin: 0.25rem 0;
}

.footer-filing a {
  color: var(--color-text-tertiary);
  transition: color 0.3s ease;
}

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

.footer-copyright {
  text-align: center;
  color: var(--color-text-tertiary);
  font-size: 0.875rem;
  padding-top: var(--space-lg);
}

/* ==========================================
   响应式设计
   ========================================== */

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .versions-rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .version-card.is-active {
    transform: none;
  }

  .version-card-top {
    padding-right: 0;
  }

  .version-highlights {
    padding-right: 1.1rem;
  }
}

@media (max-width: 768px) {
  .navbar-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }
  
  .navbar-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .navbar-menu a {
    padding: var(--space-sm) 0;
    font-size: 1.125rem;
  }
  
  .navbar-toggle {
    display: flex;
  }
  
  .navbar-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .navbar-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .navbar-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
  
  .hero-title-main {
    font-size: 2.5rem;
  }
  
  .hero-title-sub {
    font-size: 1.25rem;
  }
  
  .hero-description {
    font-size: 1rem;
  }
  
  .hero-meta {
    font-size: 0.75rem;
    gap: 0.5rem;
  }
  
  .meta-item {
    padding: 0.375rem 0.75rem;
  }
  
  .meta-divider {
    display: none;
  }
  
  .meta-filing {
    width: 100%;
    justify-content: center;
  }
  
  .download-grid {
    grid-template-columns: 1fr;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }

  .versions-rail {
    grid-template-columns: 1fr;
    gap: 0.9rem;
  }

  .version-card {
    padding: 1rem 0.92rem;
  }

  .version-highlight-item {
    font-size: 0.84rem;
    line-height: 1.55;
  }

  .version-watermark {
    font-size: 1.28rem;
  }

  .version-highlights {
    padding-right: 0;
    padding-bottom: 0.15rem;
  }

  
  .qr-card-horizontal {
    flex-direction: column;
    padding: 2rem;
    gap: 2rem;
  }
  
  .qr-info {
    text-align: center;
    align-items: center;
  }
  
  .qr-image {
    width: 200px;
    height: 200px;
  }
  
  .miniprogram-hero-inner {
    padding: var(--space-xl) var(--space-md);
  }

  .guide-grid {
    grid-template-columns: 1fr;
  }

  .guide-card-ios {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .guide-card-qr {
    text-align: left;
  }

  .miniprogram-hero-title {
    font-size: 1.5rem;
  }

  .miniprogram-hero-qr-img {
    width: 180px;
    height: 180px;
  }

  .hero-miniprogram-pitch {
    flex-direction: column;
    gap: 0.5rem;
  }

  .footer-content {
    flex-direction: column;
    gap: var(--space-lg);
    text-align: center;
  }
  
  .section-title {
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .hero-title-main {
    font-size: 2rem;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }

  .guide-actions a {
    width: 100%;
  }

  .guide-qr-img {
    width: 136px;
    height: 136px;
  }

  .versions-intro {
    font-size: 0.92rem;
  }

  .version-card-title {
    font-size: 0.96rem;
  }

  .version-card-tagline {
    font-size: 0.78rem;
  }
}