/* 2026年现代设计风格 - 沉浸式 AI 主题 */

:root {
  /* 颜色系统 */
  --bg-dark: #0a0a0f;
  --bg-darker: #050508;
  --primary: #8a2be2;
  --primary-glow: rgba(138, 43, 226, 0.6);
  --secondary: #00d2ff;
  --secondary-glow: rgba(0, 210, 255, 0.6);
  --text-main: #f8f9fa;
  --text-muted: #a0a0b0;
  
  /* 毛玻璃效果变量 */
  --glass-bg: rgba(20, 20, 30, 0.5);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  
  /* 渐变 */
  --gradient-text: linear-gradient(135deg, #00d2ff 0%, #3a7bd5 50%, #8a2be2 100%);
  --gradient-card: linear-gradient(145deg, rgba(30, 30, 45, 0.6), rgba(15, 15, 25, 0.8));
  
  /* 间距与圆角 */
  --radius-xl: 24px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --transition-smooth: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', '苹方-简', 'Hiragino Sans GB', '冬青黑体', 'Microsoft YaHei', '微软雅黑', 'Noto Sans SC', '思源黑体', 'Source Han Sans SC', '思源黑体 SC', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* 渐变文本 */
.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 毛玻璃面板 */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-shadow);
}

/* --- 背景发光球体 --- */
.ambient-background {
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  z-index: -1;
  overflow: hidden;
}
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: float 20s infinite alternate;
}
.orb-1 {
  top: -10%; left: -10%;
  width: 50vw; height: 50vw;
  background: radial-gradient(circle, rgba(138,43,226,0.3) 0%, transparent 70%);
}
.orb-2 {
  bottom: -20%; right: -10%;
  width: 60vw; height: 60vw;
  background: radial-gradient(circle, rgba(0,210,255,0.2) 0%, transparent 70%);
  animation-delay: -5s;
}
.orb-3 {
  top: 40%; left: 60%;
  width: 30vw; height: 30vw;
  background: radial-gradient(circle, rgba(255,0,128,0.15) 0%, transparent 70%);
  animation-delay: -10s;
}

@keyframes float {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(5%, 10%) scale(1.1); }
  100% { transform: translate(-5%, -5%) scale(0.9); }
}

:root {
  --nav-bg: rgba(20, 20, 30, 0.6);
  --nav-bg-scrolled: rgba(10, 10, 15, 0.8);
  --nav-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* --- 导航栏 --- */
.glass-nav {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 96px;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 48px;
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: var(--transition-smooth);
}

.glass-nav.scrolled {
  padding: 12px 0;
  background: var(--nav-bg-scrolled);
  box-shadow: var(--nav-shadow);
  height: 72px;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 0 32px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 16px;
  font-weight: 700;
  font-size: 1.3rem;
}
.logo-img {
  height: 48px;
  width: auto;
}
.brand-highlight {
  color: var(--text-muted);
  font-weight: 400;
  font-size: 1rem;
  margin-left: 8px;
}

.nav-links {
  display: flex;
  gap: 32px;
}
.nav-links a {
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.95rem;
  transition: var(--transition-smooth);
  opacity: 0.8;
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-links a .nav-icon {
  font-size: 0.85rem;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.nav-links a:hover {
  opacity: 1;
  color: var(--secondary);
}
.nav-links a:hover .nav-icon {
  transform: translateY(-2px) scale(1.1);
  color: var(--primary);
}

.nav-trial-btn {
  color: #fff !important;
  background: linear-gradient(135deg, #ff007a, #7a00ff);
  padding: 8px 20px;
  border-radius: 20px;
  font-weight: 600;
  opacity: 1 !important;
  box-shadow: 0 4px 15px rgba(255, 0, 122, 0.3);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.nav-trial-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 0, 122, 0.5);
  color: #fff !important;
}
.nav-trial-btn .nav-icon {
  color: #fff !important;
}
[data-theme="light"] .nav-trial-btn {
  color: #fff !important;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 导航栏功能图标按钮 */
.nav-icon-btn {
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 1.2rem;
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}
.nav-icon-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--secondary);
  transform: scale(1.1) rotate(5deg);
}

/* --- 按钮 --- */
.btn-glow {
  background: linear-gradient(90deg, #8a2be2, #00d2ff);
  color: white;
  padding: 10px 24px;
  border-radius: 24px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  box-shadow: 0 0 20px var(--primary-glow);
  transition: var(--transition-smooth);
}
.btn-glow:hover {
  box-shadow: 0 0 30px var(--secondary-glow);
  transform: translateY(-2px);
}

.btn-primary {
  background: #fff;
  color: #000;
  padding: 16px 32px;
  border-radius: 32px;
  text-decoration: none;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-smooth);
}
.btn-primary:hover {
  background: #f0f0f0;
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(255,255,255,0.1);
}

.btn-secondary {
  background: rgba(255,255,255,0.05);
  color: #fff;
  padding: 16px 32px;
  border-radius: 32px;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid var(--glass-border);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-smooth);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
}

/* 按钮内的图片图标 */
.btn-img-icon {
  height: 24px;
  width: auto;
  object-fit: contain;
}

/* 呼吸动画 */
.btn-breathing {
  animation: breathe 3s ease-in-out infinite;
}
@keyframes breathe {
  0% {
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.6);
    transform: scale(1.02);
  }
  100% {
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.2);
    transform: scale(1);
  }
}
[data-theme="light"] .btn-breathing {
  animation: breathe-light 3s ease-in-out infinite;
}
@keyframes breathe-light {
  0% {
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.25);
    transform: scale(1.02);
  }
  100% {
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
    transform: scale(1);
  }
}

/* --- 英雄区 --- */
.hero {
  margin: 130px auto 0;
  padding: 30px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 80%;
}
.hero-content {
  width: 100%;
}
.badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--secondary);
  margin-bottom: 24px;
}
.hero-title {
  font-size: 4.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}
.title-line-1 {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.hero-title-icon {
  height: 0.9em; /* 维持与字体字号自适应 */
  width: auto;
  margin-right: 16px;
  /* 移除原有的 vertical-align 和 top 等强制控制属性，让 flexbox 自动完成视觉居中对齐 */
}
.hero-desc {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 800px;
  margin: 0 auto 30px;
  line-height: 1.8;
}
.hero-desc b {
  color: var(--text-main);
}
.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

/* 渐变点缀按钮 */
.btn-accent {
  background: linear-gradient(135deg, #ff007a, #7a00ff);
  color: white;
  padding: 16px 32px;
  border-radius: 32px;
  text-decoration: none;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-smooth);
  border: none;
}
.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(255, 0, 122, 0.3);
}

/* 数据条 */
.stats-bar {
  display: flex;
  justify-content: center;
  gap: 48px;
  padding: 24px 48px;
  margin-bottom: 30px;
}
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.stat-num {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, #fff, #a0a0b0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 4px;
}

/* 视觉Mockup */
.hero-visual {
  width: 100%;
  position: relative;
  perspective: 1000px;
}
.dashboard-mockup {
  padding: 8px;
  border-radius: var(--radius-xl);
  transform: rotateX(5deg) scale(0.95);
  transition: var(--transition-smooth);
  position: relative;
}
.dashboard-mockup:hover {
  transform: rotateX(0deg) scale(1);
  box-shadow: 0 20px 40px rgba(138,43,226,0.2);
}
.mockup-img {
  width: 100%;
  border-radius: var(--radius-lg);
  display: block;
}
.floating-card {
  position: absolute;
  background: rgba(10,10,15,0.8);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  padding: 12px 20px;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 10px 20px rgba(0,0,0,0.5);
  animation: float-card 6s ease-in-out infinite alternate;
}
.card-1 {
  top: 10%; left: -5%;
}
.card-2 {
  bottom: 20%; right: -5%;
  animation-delay: -3s;
}

@keyframes float-card {
  0% { transform: translateY(0px); }
  100% { transform: translateY(-15px); }
}

/* --- Bento Box 功能区 --- */
.bento-section {
  width: 80%;
  margin: 0 auto;
  padding: 30px 0;
}
.section-heading {
  text-align: center;
  margin-bottom: 30px;
}
.section-heading h2 {
  font-size: 3rem;
  margin-bottom: 16px;
}
.section-heading p {
  font-size: 1.1rem;
  color: var(--text-muted);
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: minmax(280px, auto);
  gap: 24px;
}

.bento-card {
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  transition: var(--transition-smooth);
  background: var(--gradient-card);
}
.bento-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255,255,255,0.2);
  box-shadow: 0 15px 30px rgba(0,0,0,0.4);
}
.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }

.highlight-border {
  position: relative;
}
.highlight-border::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: inherit;
  padding: 2px;
  background: linear-gradient(135deg, #8a2be2, #00d2ff);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.bento-icon {
  width: 48px; height: 48px;
  background: rgba(255,255,255,0.05);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--secondary);
  margin-bottom: 20px;
}
.bento-card h3 {
  font-size: 1.5rem;
  margin-bottom: 12px;
  font-weight: 600;
}
.bento-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}
.feature-tags {
  display: flex;
  gap: 8px;
  margin-top: auto;
  padding-top: 20px;
}
.feature-tags span {
  font-size: 0.75rem;
  padding: 4px 10px;
  background: rgba(255,255,255,0.1);
  border-radius: 12px;
}

/* 横向排版模块 */
.row-layout {
  flex-direction: row;
  align-items: center;
  gap: 40px;
}
.row-layout .card-content {
  flex: 1;
}
.row-layout .card-visual {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.mock-sentence {
  background: rgba(0,0,0,0.4);
  padding: 16px;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: monospace;
  font-size: 0.85rem;
  color: #ccc;
}
.mock-sentence .highlight {
  color: #fff;
}
.mock-sentence .badge {
  margin: 0;
  padding: 4px 8px;
  background: rgba(0,210,255,0.1);
  color: #00d2ff;
  border: none;
}

/* --- 独创三屏写作模式 --- */
.three-screen-section {
  width: 80%;
  margin: 0 auto;
  padding: 30px 0;
}
.three-screen-container {
  display: flex;
  gap: 24px;
  justify-content: space-between;
}
.screen-card {
  flex: 1;
  display: flex;
  flex-direction: column;
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition-smooth);
}
.screen-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 30px rgba(0,0,0,0.4);
}
.screen-header {
  background: rgba(0, 0, 0, 0.2);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--glass-border);
}
.screen-header .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin-right: 6px;
}
.screen-header .dot.red { background: #ff5f56; }
.screen-header .dot.yellow { background: #ffbd2e; }
.screen-header .dot.green { background: #27c93f; }
.screen-header span {
  margin-left: 12px;
  font-size: 0.9rem;
  color: var(--text-muted);
  font-family: monospace;
}
.screen-body {
  padding: 24px;
}
.screen-body .highlight-text {
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 12px;
  font-size: 1.1rem;
}
.screen-body p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* --- 竞品对比表格 --- */
.comparison-section {
  width: 80%;
  margin: 30px auto;
  padding: 30px;
  text-align: center;
}
.table-responsive {
  overflow-x: auto;
  margin-top: 40px;
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}
.compare-table th, .compare-table td {
  padding: 16px;
  border-bottom: 1px solid var(--glass-border);
}
.compare-table th {
  font-weight: 600;
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}
.compare-table .highlight-col {
  background: rgba(138, 43, 226, 0.1);
  font-weight: 600;
}
.compare-table td {
  color: var(--text-muted);
  font-size: 0.95rem;
}
.text-success { color: #10B981; }
.text-muted { color: #64748B; }

/* --- 适用场景网格 --- */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}
.scenario-card {
  padding: 32px;
  position: relative;
  transition: var(--transition-smooth);
}
.scenario-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
}
.scenario-number {
  font-size: 3rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.05);
  position: absolute;
  top: 16px;
  right: 24px;
  line-height: 1;
}
[data-theme="light"] .scenario-number {
  color: rgba(0, 0, 0, 0.05);
}
.scenario-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}
.scenario-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

/* --- 适用人群与避坑 --- */
.info-section {
  width: 80%;
  margin: 30px auto;
  padding: 30px;
}
.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}
.info-col h3 {
  font-size: 1.5rem;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.custom-list {
  list-style: none;
}
.custom-list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 16px;
  color: var(--text-main);
}
.custom-list li::before {
  content: '✓';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  left: 0;
  color: #10B981;
}
.muted-list li::before {
  content: '✕';
  color: #ff5f56;
}
.pricing-card {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 32px;
  margin-bottom: 24px;
}
[data-theme="light"] .pricing-card {
  background: rgba(255, 255, 255, 0.5);
}
.pricing-card .price {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 16px;
  line-height: 1;
}
.pricing-card .price span {
  font-size: 1.2rem;
  color: var(--text-muted);
  font-weight: 400;
}
.pricing-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 12px;
}
.pitfall-box {
  background: rgba(255, 189, 46, 0.1);
  border-left: 4px solid #ffbd2e;
  padding: 20px;
  border-radius: 0 12px 12px 0;
}
.pitfall-box p {
  color: var(--text-main);
  font-size: 0.95rem;
  margin-bottom: 12px;
}
.pitfall-box p:last-child {
  margin-bottom: 0;
}

/* --- 真实评价 --- */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.review-card {
  padding: 32px;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
}
.review-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.2);
}
.review-card .stars {
  font-size: 1.2rem;
  margin-bottom: 16px;
}
.review-card .review-text {
  font-style: italic;
  color: var(--text-main);
  font-size: 1.05rem;
  line-height: 1.6;
  margin-bottom: 24px;
  flex-grow: 1;
}
.review-card .review-author {
  color: var(--text-muted);
  font-size: 0.9rem;
  text-align: right;
  font-weight: 600;
}

/* --- FAQ --- */
.faq-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  padding: 24px 32px;
  transition: var(--transition-smooth);
}
.faq-item:hover {
  border-color: var(--primary);
  background: rgba(138, 43, 226, 0.05);
}
.faq-item h4 {
  font-size: 1.2rem;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.faq-item p {
  color: var(--text-muted);
  line-height: 1.6;
  margin-left: 32px;
}

/* --- CTA 区 --- */
.cta-section {
  width: 80%;
  margin: 30px auto;
  padding: 30px;
  text-align: center;
  background: linear-gradient(145deg, rgba(138,43,226,0.1), rgba(0,210,255,0.1));
}
.cta-section h2 {
  font-size: 2.5rem;
  margin-bottom: 16px;
}
.cta-section p {
  color: var(--text-muted);
  margin-bottom: 32px;
  font-size: 1.1rem;
}
.btn-glow.large {
  font-size: 1.1rem;
  padding: 16px 40px;
  border-radius: 32px;
}

/* --- 页脚 --- */
.footer {
  border-top: 1px solid var(--glass-border);
  padding: 60px 0 30px;
  background: #050508;
}
.footer-content {
  width: 80%;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 60px;
  margin-bottom: 40px;
}
.brand-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
  max-width: 60%;
}
.footer-logo {
  height: 32px;
  width: auto;
  object-fit: contain;
  align-self: flex-start;
}
.brand-info p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.8;
}
.notice-text {
  display: inline-block;
  margin-top: 8px;
  color: #ff5252;
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 600;
}
[data-theme="light"] .notice-text {
  color: #d32f2f;
}
.footer-links-wrapper {
  display: flex;
  gap: 80px;
}
.footer-links-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.footer-links-col h4 {
  color: var(--text-main);
  font-size: 1.1rem;
  margin-bottom: 4px;
  font-weight: 600;
}
.footer-links-col a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: var(--transition-smooth);
}
.footer-links-col a:hover {
  color: var(--secondary);
  transform: translateX(4px);
}
.copyright {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  padding-top: 30px;
  border-top: 1px solid rgba(255,255,255,0.05);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.beian-info {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}
.beian-info a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition-smooth);
}
.beian-info a:hover {
  color: var(--secondary);
}
.gongan-beian {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.gongan-beian img {
  height: 16px;
  width: auto;
}

/* --- 悬浮操作区 --- */
.floating-actions {
  position: fixed;
  right: 30px;
  bottom: 30px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 999;
}
.float-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--glass-shadow);
  transition: var(--transition-smooth);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
}
.float-btn.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.float-btn:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(138, 43, 226, 0.4);
}
[data-theme="light"] .float-btn {
  background: rgba(255, 255, 255, 0.8);
}
[data-theme="light"] .float-btn:hover {
  background: var(--primary);
}

/* --- Toast 轻提示 --- */
.toast-notification {
  position: fixed;
  top: 100px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: var(--gradient-card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  padding: 12px 24px;
  border-radius: 30px;
  font-size: 0.95rem;
  font-weight: 600;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  box-shadow: 0 10px 30px rgba(138, 43, 226, 0.3);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.toast-notification.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
[data-theme="light"] .toast-notification {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  color: #1a1a24;
}

/* 响应式调整 */
[data-theme="light"] {
  --bg-dark: #f0f4f8;
  --bg-darker: #ffffff;
  --text-main: #1a1a24;
  --text-muted: #5a5a6a;
  
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(0, 0, 0, 0.1);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.05);
  
  --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.9), rgba(240, 245, 250, 0.8));
  
  --nav-bg: rgba(255, 255, 255, 0.6);
  --nav-bg-scrolled: rgba(255, 255, 255, 0.95);
  --nav-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .nav-icon-btn:hover {
  background: rgba(0, 0, 0, 0.05);
}
[data-theme="light"] .btn-primary {
  background: #1a1a24;
  color: #ffffff;
}
[data-theme="light"] .btn-primary:hover {
  background: #33333e;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}
[data-theme="light"] .btn-secondary {
  background: rgba(0, 0, 0, 0.05);
  color: #1a1a24;
  border-color: rgba(0, 0, 0, 0.1);
}
[data-theme="light"] .btn-secondary:hover {
  background: rgba(0, 0, 0, 0.1);
  border-color: rgba(0, 0, 0, 0.2);
}
[data-theme="light"] .badge {
  background: rgba(0, 0, 0, 0.05);
  color: var(--primary);
  border-color: rgba(0, 0, 0, 0.1);
}
[data-theme="light"] .bento-icon {
  background: rgba(0, 0, 0, 0.05);
  color: var(--primary);
}
[data-theme="light"] .mock-sentence {
  background: rgba(255, 255, 255, 0.8);
  color: #555;
  border-color: rgba(0, 0, 0, 0.1);
}
[data-theme="light"] .mock-sentence .highlight {
  color: #1a1a24;
}
[data-theme="light"] .floating-card {
  background: rgba(255, 255, 255, 0.8);
  color: #1a1a24;
}
[data-theme="light"] .footer {
  background: #ffffff;
  border-top-color: rgba(0, 0, 0, 0.1);
}
[data-theme="light"] .copyright {
  border-top-color: rgba(0, 0, 0, 0.05);
}
[data-theme="light"] .stat-num {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
[data-theme="light"] .cta-section {
  background: linear-gradient(145deg, rgba(138,43,226,0.05), rgba(0,210,255,0.05));
}
[data-theme="light"] .hero-desc b {
  color: var(--primary);
}

/* --- 桌面端独立操作按钮（导航栏内右侧） --- */
@media (min-width: 769px) {
  .nav-container {
    justify-content: flex-start;
  }
  .right-controls {
    margin-left: 50px;
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .top-right-desktop {
    display: flex;
    flex-direction: row; /* 水平排列 */
    gap: 16px;
    align-items: center;
  }
  
  .top-right-desktop .nav-icon-btn {
    width: 41px;
    height: 41px;
    font-size: 1rem;
    border-radius: 50%;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
  }
  
  .top-right-desktop .nav-icon-btn:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(138, 43, 226, 0.4);
  }
  
  [data-theme="light"] .top-right-desktop .nav-icon-btn {
    background: rgba(255, 255, 255, 0.8);
  }
  
  [data-theme="light"] .top-right-desktop .nav-icon-btn:hover {
    background: var(--primary);
  }
}

/* 汉堡菜单按钮（默认隐藏） */
.hamburger-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
  z-index: 1002;
}

.nav-menu-wrapper {
  display: flex;
  align-items: center;
  gap: 32px;
}

.right-controls {
  display: flex;
  align-items: center;
  gap: 24px;
}

/* 响应式调整 */
@media (max-width: 992px) {
  .hero-title { font-size: 3.5rem; }
  .bento-grid { grid-template-columns: repeat(2, 1fr); }
  .span-3 { grid-column: span 2; }
  .row-layout { flex-direction: column; }
  .stats-bar { flex-wrap: wrap; gap: 24px; }
  .three-screen-container { flex-direction: column; }
  .info-grid { grid-template-columns: 1fr; }
  .nav-menu-wrapper { gap: 16px; }
  .nav-links { gap: 16px; }
}

@media (max-width: 768px) {
  /* 移动端 Logo 缩小至 0.75倍 (原高 48px -> 36px) */
  .logo-img { height: 36px; }
  
  /* 导航栏移动端适配与汉堡菜单 */
  .glass-nav {
    width: 90%;
    height: 72px;
    top: 15px;
  }
  .glass-nav.scrolled {
    height: 60px;
  }
  .nav-container {
    padding: 0 20px;
  }
  .hamburger-btn {
    display: block;
  }
  
  .nav-menu-wrapper {
    position: fixed;
    top: 100px;
    left: 5%;
    width: 90%;
    background: var(--nav-bg-scrolled);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    flex-direction: column;
    padding: 24px;
    box-shadow: var(--nav-shadow);
    gap: 24px;
    
    /* 默认隐藏动画状态 */
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px);
    transition: var(--transition-smooth);
  }
  
  .nav-menu-wrapper.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-links { 
    flex-direction: column; 
    width: 100%;
    text-align: center;
    gap: 20px;
  }
  
  .right-controls {
    gap: 8px;
  }

  .nav-actions {
    width: auto;
    justify-content: flex-end;
    border-top: none;
    padding-top: 0;
    gap: 4px;
  }
  
  .nav-icon-btn {
    width: 36px;
    height: 36px;
    font-size: 1.1rem;
  }

  .hero { margin-top: 100px; padding: 30px 0; width: 90%; }
  .hero-title { font-size: 2.5rem; }
  .bento-grid { grid-template-columns: 1fr; }
  .span-2, .span-3 { grid-column: span 1; }
  .hero-buttons { flex-direction: column; width: 100%; max-width: 300px; margin: 0 auto 30px; }
  .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
  
  .bento-section, .three-screen-section, .comparison-section, .info-section, .cta-section {
    width: 90%;
    padding: 30px 0;
    margin: 20px auto;
  }
  .comparison-section, .info-section, .cta-section {
    padding: 20px 15px;
  }
  
  .footer-content { flex-direction: column; gap: 40px; align-items: center; text-align: center; }
  .brand-info { max-width: 100%; align-items: center; }
  .footer-logo { align-self: center; }
  
  /* 移动端页脚链接水平排列 */
  .footer-links-wrapper { 
    flex-direction: row; 
    justify-content: center;
    gap: 40px; 
    width: 100%;
  }
  .footer-links-col {
    align-items: center;
  }
}