/* ===================================================================
   龙猫云 (Totoro Cloud) - 极光玻璃拟态样式表
   极简无依赖、纯原生现代 CSS，针对秒开优化与全终端响应式
   =================================================================== */

:root {
  --bg-primary: #070913;
  --bg-secondary: #0d1224;
  --aurora-cyan: rgba(0, 240, 255, 0.45);
  --aurora-violet: rgba(138, 43, 226, 0.5);
  --aurora-pink: rgba(255, 64, 160, 0.45);
  --glass-bg: rgba(18, 24, 48, 0.65);
  --glass-bg-hover: rgba(26, 35, 71, 0.82);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-border-focus: rgba(0, 240, 255, 0.45);
  --glass-glow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --gradient-brand: linear-gradient(135deg, #00f0ff 0%, #a855f7 50%, #ec4899 100%);
  --gradient-btn: linear-gradient(135deg, #00d2ff 0%, #7928ca 50%, #ff0080 100%);
  --gradient-btn-hover: linear-gradient(135deg, #33dcff 0%, #903ded 50%, #ff339c 100%);
  --font-sans: 'Space Grotesk', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  background-color: var(--bg-primary);
  line-height: 1.65;
}

/* ================= 极光光斑背景动画 ================= */
.aurora-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.aurora-blob {
  position: absolute;
  filter: blur(90px);
  opacity: 0.65;
  border-radius: 50%;
  animation-iteration-count: infinite;
  animation-timing-function: ease-in-out;
}

.blob-cyan {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, var(--aurora-cyan) 0%, rgba(0,240,255,0) 70%);
  top: -100px;
  left: -100px;
  animation: floatCyan 18s alternate infinite;
}

.blob-violet {
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, var(--aurora-violet) 0%, rgba(138,43,226,0) 70%);
  bottom: 5%;
  right: -80px;
  animation: floatViolet 22s alternate infinite;
}

.blob-pink {
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, var(--aurora-pink) 0%, rgba(255,64,160,0) 70%);
  top: 35%;
  left: 30%;
  animation: floatPink 20s alternate infinite;
}

@keyframes floatCyan {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(120px, 80px) scale(1.15); }
  100% { transform: translate(40px, 140px) scale(0.95); }
}

@keyframes floatViolet {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-100px, -70px) scale(1.12); }
  100% { transform: translate(-40px, 60px) scale(0.9); }
}

@keyframes floatPink {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-80px, 90px) scale(1.2); }
  100% { transform: translate(90px, -60px) scale(0.88); }
}

/* 页面入场淡入上移动画 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* ================= 布局与网格 ================= */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 85px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 52px;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid rgba(0, 240, 255, 0.3);
  color: #38bdf8;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ================= 渐变文字与徽标 ================= */
.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* ================= 磨砂玻璃卡片 ================= */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  transition: var(--transition-smooth);
}

.glass-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 255, 255, 0.28);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5), 0 0 25px rgba(0, 240, 255, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

/* ================= 按钮体系 ================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 28px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
  gap: 8px;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-btn);
  color: #ffffff;
  box-shadow: 0 0 22px rgba(121, 40, 202, 0.45);
}

.btn-primary:hover {
  background: var(--gradient-btn-hover);
  box-shadow: 0 0 35px rgba(0, 210, 255, 0.65), 0 6px 20px rgba(255, 0, 128, 0.4);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.35);
  transform: translateY(-2px);
  color: #fff;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.1rem;
}

/* ================= 顶栏导航 ================= */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 9, 19, 0.72);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  transition: var(--transition-smooth);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-size: 1.35rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.5px;
}

.logo-badge {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.2rem;
  color: #0b0f19;
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 24px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: var(--transition-smooth);
  position: relative;
  padding: 6px 2px;
}

.nav-link:hover, .nav-link.active {
  color: #ffffff;
}

.nav-link.highlight {
  color: #38bdf8;
  font-weight: 600;
}

.nav-link.highlight::after {
  content: "HOT";
  display: inline-block;
  font-size: 0.65rem;
  background: linear-gradient(135deg, #ec4899, #f43f5e);
  color: #fff;
  padding: 1px 6px;
  border-radius: 10px;
  margin-left: 6px;
  vertical-align: top;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ================= 主视觉区 (Hero) ================= */
.hero-section {
  padding: 90px 0 60px;
  text-align: center;
  position: relative;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  margin-bottom: 24px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.hero-pill .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 10px #10b981;
}

.hero-title {
  font-size: 3.4rem;
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -1.5px;
  margin-bottom: 22px;
  max-width: 980px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 760px;
  margin: 0 auto 38px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}

.hero-guarantee {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.hero-guarantee span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1040px;
  margin: 0 auto;
}

.stat-card {
  padding: 24px 18px;
  text-align: center;
}

.stat-value {
  font-size: 2.1rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 6px;
  letter-spacing: -0.5px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ================= 核心优势三卡片 ================= */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.feature-card {
  padding: 36px 30px;
  position: relative;
  overflow: hidden;
}

.feature-icon-wrapper {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid rgba(0, 240, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  font-size: 1.6rem;
  color: #38bdf8;
}

.feature-card:nth-child(2) .feature-icon-wrapper {
  background: rgba(168, 85, 247, 0.1);
  border-color: rgba(168, 85, 247, 0.3);
  color: #c084fc;
}

.feature-card:nth-child(3) .feature-icon-wrapper {
  background: rgba(236, 72, 153, 0.1);
  border-color: rgba(236, 72, 153, 0.3);
  color: #f472b6;
}

.feature-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #fff;
}

.feature-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 18px;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.f-tag {
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #cbd5e1;
}

/* ================= 流媒体与 AI 支持图卡 ================= */
.media-ai-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.media-ai-box {
  padding: 36px 32px;
  position: relative;
}

.media-ai-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.media-ai-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.07);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.media-ai-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: #ffffff;
}

.media-ai-sub {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.media-badges-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.service-badge {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 12px 10px;
  text-align: center;
  transition: var(--transition-smooth);
}

.service-badge:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(0, 240, 255, 0.3);
  transform: translateY(-2px);
}

.service-badge .name {
  font-size: 0.9rem;
  font-weight: 600;
  color: #f1f5f9;
  display: block;
}

.service-badge .status {
  font-size: 0.72rem;
  color: #10b981;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin-top: 3px;
}

/* ================= 价格套餐对比表 ================= */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  padding: 40px 32px;
  position: relative;
  display: flex;
  flex-direction: column;
}

.pricing-card.featured {
  border-color: rgba(0, 240, 255, 0.45);
  box-shadow: 0 15px 40px rgba(0, 240, 255, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  transform: scale(1.03);
}

.pricing-card.featured:hover {
  transform: scale(1.05) translateY(-6px);
}

.badge-popular {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-brand);
  color: #000;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 1px;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 14px rgba(0, 240, 255, 0.4);
}

.plan-name {
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  min-height: 42px;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.plan-currency {
  font-size: 1.3rem;
  font-weight: 600;
  color: #38bdf8;
}

.plan-price {
  font-size: 2.8rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1;
}

.plan-cycle {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.plan-features {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
}

.plan-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: #cbd5e1;
  margin-bottom: 14px;
}

.check-icon {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.15);
  color: #10b981;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
}

/* ================= 用户评价卡片 ================= */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  padding: 30px 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testimonial-quote {
  font-size: 0.95rem;
  color: #e2e8f0;
  line-height: 1.68;
  margin-bottom: 22px;
  position: relative;
}

.testimonial-user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #0b0f19;
  font-size: 1rem;
}

.user-info h4 {
  font-size: 0.95rem;
  color: #fff;
  font-weight: 600;
}

.user-info span {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.user-stars {
  color: #fbbf24;
  font-size: 0.85rem;
  margin-top: 2px;
}

/* ================= 常见问题 (FAQ) ================= */
.faq-grid {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  padding: 22px 26px;
  cursor: pointer;
}

.faq-item summary {
  list-style: none;
  font-size: 1.1rem;
  font-weight: 600;
  color: #ffffff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  outline: none;
  user-select: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.5rem;
  font-weight: 400;
  color: #38bdf8;
  transition: transform 0.3s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-answer {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ================= CTA 横幅区 ================= */
.cta-banner {
  padding: 60px 40px;
  text-align: center;
  position: relative;
  background: linear-gradient(135deg, rgba(13,18,36,0.9) 0%, rgba(30,16,60,0.9) 100%);
  border: 1px solid rgba(0, 240, 255, 0.25);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 35px rgba(121, 40, 202, 0.25);
}

.cta-banner h2 {
  font-size: 2.4rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}

.cta-banner p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto 30px;
}

/* ================= 极简独立页脚 ================= */
.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 42px 0;
  background: rgba(7, 9, 19, 0.95);
  margin-top: 60px;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  list-style: none;
  flex-wrap: wrap;
}

.footer-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.98rem;
  font-weight: 500;
  transition: var(--transition-smooth);
}

.footer-link:hover {
  color: #00f0ff;
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

.footer-copyright {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
}

/* ================= 文章/单页通用容器样式 ================= */
.article-container {
  max-width: 860px;
  margin: 40px auto 80px;
  padding: 44px 38px;
}

.article-header {
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-muted);
  font-size: 0.86rem;
  margin-top: 14px;
}

.article-content {
  color: #d1d5db;
  line-height: 1.85;
  font-size: 1.02rem;
}

.article-content h2 {
  font-size: 1.6rem;
  color: #fff;
  margin: 36px 0 16px;
  padding-left: 12px;
  border-left: 4px solid #00f0ff;
}

.article-content h3 {
  font-size: 1.25rem;
  color: #f1f5f9;
  margin: 26px 0 12px;
}

.article-content p {
  margin-bottom: 18px;
}

.article-content ul, .article-content ol {
  margin: 0 0 20px 24px;
}

.article-content li {
  margin-bottom: 8px;
}

.article-content blockquote {
  border-left: 3px solid #a855f7;
  padding: 14px 20px;
  background: rgba(168, 85, 247, 0.08);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 20px 0;
  color: #e2e8f0;
}

.article-content a {
  color: #38bdf8;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-content a:hover {
  color: #00f0ff;
}

.article-toc {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 24px 0 32px;
}

.article-toc h4 {
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 12px;
}

.article-toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.article-toc li {
  margin-bottom: 6px;
}

.article-toc a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
}

.article-toc a:hover {
  color: #38bdf8;
}

/* ================= 响应式媒体查询 ================= */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.8rem;
  }
  .features-grid, .pricing-grid, .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-card.featured {
    transform: none;
  }
}

@media (max-width: 768px) {
  .header-container {
    height: 64px;
  }
  .nav-links {
    display: none; /* 移动端精简保留关键操作 */
  }
  .hero-section {
    padding: 60px 0 40px;
  }
  .hero-title {
    font-size: 2.1rem;
    letter-spacing: -0.5px;
  }
  .hero-subtitle {
    font-size: 1rem;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .features-grid, .media-ai-container, .pricing-grid, .testimonials-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .media-badges-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .section-title {
    font-size: 1.75rem;
  }
  .cta-banner h2 {
    font-size: 1.8rem;
  }
  .footer-links {
    gap: 20px;
  }
  .article-container {
    padding: 24px 18px;
    margin: 20px auto 40px;
  }
}