/* 吹雪云 (Chuixue Cloud) 官方样式表 - 原生极简高效 CSS */
:root {
  --font-main: 'Manrope', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-accent: 'Fraunces', Georgia, serif;
  
  --color-bg-start: #e0f0ff;
  --color-bg-mid: #ffffff;
  --color-bg-end: #d4e8ff;
  
  --primary-color: #0e74da;
  --primary-hover: #0c61b6;
  --primary-glow: rgba(14, 116, 218, 0.28);
  
  --text-dark: #122133;
  --text-muted: #4e6378;
  --text-light: #7c90a6;
  
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-card: rgba(255, 255, 255, 0.65);
  --glass-border: rgba(255, 255, 255, 0.45);
  --glass-border-subtle: rgba(255, 255, 255, 0.3);
  --glass-shadow: 0 12px 40px rgba(10, 77, 140, 0.08);
  --glass-shadow-hover: 0 16px 48px rgba(10, 77, 140, 0.15);
  
  --radius-panel: 18px;
  --radius-pill: 9999px;
  --blur-val: 24px;
}

/* 全局重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background: linear-gradient(135deg, var(--color-bg-start) 0%, var(--color-bg-mid) 50%, var(--color-bg-end) 100%);
  background-attachment: fixed;
  color: var(--text-dark);
  line-height: 1.65;
  overflow-x: hidden;
  min-height: 100vh;
}

/* 布局容器 */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 顶部导航栏与 Sheen 动态流光 */
.header-wrapper {
  padding-top: 18px;
}

.navbar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur-val));
  -webkit-backdrop-filter: blur(var(--blur-val));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-panel);
  box-shadow: var(--glass-shadow);
  overflow: hidden;
}

/* 6秒循环流光特效 */
.navbar::after {
  content: '';
  position: absolute;
  top: 0;
  left: -150%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.6) 45%, rgba(180, 220, 255, 0.45) 55%, transparent 100%);
  animation: navSheen 6s infinite ease-in-out;
  pointer-events: none;
}

@keyframes navSheen {
  0% { left: -150%; }
  45% { left: 150%; }
  100% { left: 150%; }
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.5px;
}

.nav-brand-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0e74da, #60a5fa);
  border-radius: 10px;
  color: #fff;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 28px;
}

.nav-menu a {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.nav-menu a:hover {
  color: var(--primary-color);
}

.nav-menu .badge-recommend {
  background: linear-gradient(135deg, #0e74da, #38bdf8);
  color: #ffffff;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 700;
  box-shadow: 0 2px 10px rgba(14, 116, 218, 0.25);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.nav-menu .badge-recommend:hover {
  color: #ffffff;
  transform: translateY(-1px);
}

/* 按钮通用样式 (胶囊式圆角 + 悬浮内发光) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.98rem;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s ease;
  border: 1px solid transparent;
  min-height: 48px;
}

.btn-primary {
  background: linear-gradient(135deg, #0e74da 0%, #2563eb 100%);
  color: #ffffff;
  box-shadow: 0 8px 24px var(--primary-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0c61b6 0%, #1d4ed8 100%);
  box-shadow: inset 0 0 14px rgba(255, 255, 255, 0.45), 0 10px 28px rgba(14, 116, 218, 0.35);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.85);
  color: #0e74da;
  border: 1px solid rgba(14, 116, 218, 0.3);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 15px rgba(10, 77, 140, 0.06);
}

.btn-secondary:hover {
  background: #ffffff;
  border-color: #0e74da;
  box-shadow: inset 0 0 12px rgba(255, 255, 255, 0.6), 0 8px 24px rgba(10, 77, 140, 0.12);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--text-dark);
  border: 1px solid var(--glass-border);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.5);
  border-color: rgba(14, 116, 218, 0.3);
  box-shadow: inset 0 0 10px rgba(255, 255, 255, 0.5);
}

/* 主视觉区 (Hero Section) */
.hero-section {
  position: relative;
  padding: 85px 0 65px;
  text-align: center;
  overflow: visible;
}

/* 浮动雪花背景 Motif */
.hero-snowflake-bg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 580px;
  height: 580px;
  opacity: 0.16;
  pointer-events: none;
  z-index: 0;
  animation: floatSlow 20s infinite ease-in-out;
}

@keyframes floatSlow {
  0% { transform: translate(-50%, -50%) rotate(0deg); }
  50% { transform: translate(-50%, -46%) rotate(180deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin: 0 auto;
}

.hero-pill-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--glass-border-subtle);
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 700;
  color: #0e74da;
  box-shadow: 0 4px 16px rgba(10, 77, 140, 0.05);
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.3rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-dark);
  margin-bottom: 20px;
  letter-spacing: -0.8px;
}

.accent-word {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 700;
  background: linear-gradient(135deg, #0e74da 10%, #0284c7 90%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  padding: 0 4px;
}

.hero-subtitle {
  font-size: 1.18rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 34px;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 38px;
}

.hero-trust-metrics {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  flex-wrap: wrap;
  padding-top: 10px;
}

.metric-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.metric-number {
  font-size: 1.55rem;
  font-weight: 800;
  color: #0e74da;
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-light);
  font-weight: 600;
}

/* 模块标题通用 */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 46px;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 1.2px;
  color: #0e74da;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.3rem);
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-muted);
}

/* 核心优势板块 (3个图文卡片) */
.advantages-section {
  padding: 50px 0;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.glass-card {
  background: var(--glass-card);
  backdrop-filter: blur(var(--blur-val));
  -webkit-backdrop-filter: blur(var(--blur-val));
  border: 1px solid var(--glass-border-subtle);
  border-radius: var(--radius-panel);
  box-shadow: var(--glass-shadow);
  padding: 32px 26px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.glass-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--glass-shadow-hover);
  border-color: rgba(255, 255, 255, 0.7);
}

.card-icon-wrap {
  width: 58px;
  height: 58px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(14, 116, 218, 0.12), rgba(56, 189, 248, 0.15));
  border: 1px solid rgba(14, 116, 218, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: #0e74da;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.card-text {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* 流媒体与 AI 支持图卡板块 */
.support-section {
  padding: 50px 0;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.support-banner {
  background: var(--glass-card);
  backdrop-filter: blur(var(--blur-val));
  -webkit-backdrop-filter: blur(var(--blur-val));
  border: 1px solid var(--glass-border-subtle);
  border-radius: var(--radius-panel);
  box-shadow: var(--glass-shadow);
  padding: 32px;
}

.support-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.support-head-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, #0e74da, #38bdf8);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
}

.support-head-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-dark);
}

.support-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 22px;
  line-height: 1.6;
}

.badge-tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.service-tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--glass-border-subtle);
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-dark);
  box-shadow: 0 2px 8px rgba(10, 77, 140, 0.04);
}

.service-tag span.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
}

/* 套餐价格对比表 */
.pricing-section {
  padding: 55px 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  align-items: stretch;
}

.pricing-card {
  background: var(--glass-card);
  backdrop-filter: blur(var(--blur-val));
  -webkit-backdrop-filter: blur(var(--blur-val));
  border: 1px solid var(--glass-border-subtle);
  border-radius: var(--radius-panel);
  box-shadow: var(--glass-shadow);
  padding: 32px 22px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--glass-shadow-hover);
}

.pricing-card.featured {
  background: rgba(255, 255, 255, 0.88);
  border: 2px solid #0e74da;
  box-shadow: 0 16px 48px rgba(14, 116, 218, 0.16);
  transform: scale(1.02);
}

.pricing-card.featured:hover {
  transform: scale(1.02) translateY(-6px);
}

.featured-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #0e74da, #0284c7);
  color: #fff;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 12px rgba(14, 116, 218, 0.3);
}

.plan-name {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--text-dark);
}

.plan-desc {
  font-size: 0.88rem;
  color: var(--text-light);
  margin-bottom: 18px;
  min-height: 40px;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(14, 116, 218, 0.1);
}

.plan-currency {
  font-size: 1.3rem;
  font-weight: 700;
  color: #0e74da;
}

.plan-price {
  font-size: 2.3rem;
  font-weight: 800;
  color: #0e74da;
  line-height: 1;
}

.plan-period {
  font-size: 0.88rem;
  color: var(--text-light);
}

.plan-features {
  list-style: none;
  margin-bottom: 26px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.plan-features li svg {
  width: 17px;
  height: 17px;
  color: #10b981;
  flex-shrink: 0;
}

.plan-btn {
  width: 100%;
}

/* 用户评价板块 (Testimonials) */
.reviews-section {
  padding: 50px 0;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--glass-card);
  backdrop-filter: blur(var(--blur-val));
  -webkit-backdrop-filter: blur(var(--blur-val));
  border: 1px solid var(--glass-border-subtle);
  border-radius: var(--radius-panel);
  box-shadow: var(--glass-shadow);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.stars {
  color: #f59e0b;
  margin-bottom: 14px;
  display: flex;
  gap: 3px;
}

.review-comment {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
}

.reviewer-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.reviewer-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0e74da, #60a5fa);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

.reviewer-info h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-dark);
}

.reviewer-info p {
  font-size: 0.8rem;
  color: var(--text-light);
}

/* FAQ 常见问题解答板块 */
.faq-section {
  padding: 50px 0 70px;
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--glass-card);
  backdrop-filter: blur(var(--blur-val));
  -webkit-backdrop-filter: blur(var(--blur-val));
  border: 1px solid var(--glass-border-subtle);
  border-radius: var(--radius-panel);
  box-shadow: var(--glass-shadow);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item:hover {
  border-color: rgba(14, 116, 218, 0.3);
}

.faq-summary {
  padding: 20px 24px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  user-select: none;
}

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

.faq-summary::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 400;
  color: #0e74da;
  transition: transform 0.2s ease;
}

details[open] .faq-summary::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-content {
  padding: 0 24px 22px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 页脚区域 (按要求：只保留这四个标题，内容打开新页面展示) */
.footer-section {
  padding: 40px 0 50px;
  border-top: 1px solid rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(var(--blur-val));
  -webkit-backdrop-filter: blur(var(--blur-val));
}

.footer-nav-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.footer-link-title {
  text-decoration: none;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-dark);
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--glass-border-subtle);
  transition: all 0.2s ease;
}

.footer-link-title:hover {
  background: #ffffff;
  color: #0e74da;
  box-shadow: 0 4px 15px rgba(10, 77, 140, 0.1);
  transform: translateY(-2px);
}

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

/* 资讯与关于等内页专用样式 */
.page-header-box {
  background: var(--glass-card);
  backdrop-filter: blur(var(--blur-val));
  -webkit-backdrop-filter: blur(var(--blur-val));
  border: 1px solid var(--glass-border-subtle);
  border-radius: var(--radius-panel);
  box-shadow: var(--glass-shadow);
  padding: 40px 30px;
  margin: 30px 0 35px;
  text-align: center;
}

.article-card {
  background: var(--glass-card);
  backdrop-filter: blur(var(--blur-val));
  -webkit-backdrop-filter: blur(var(--blur-val));
  border: 1px solid var(--glass-border-subtle);
  border-radius: var(--radius-panel);
  box-shadow: var(--glass-shadow);
  padding: 34px;
  margin-bottom: 30px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.article-card:hover {
  border-color: rgba(14, 116, 218, 0.3);
  box-shadow: var(--glass-shadow-hover);
}

.article-badge {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(14, 116, 218, 0.1);
  color: #0e74da;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.article-title {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 14px;
  line-height: 1.4;
}

.article-meta {
  font-size: 0.86rem;
  color: var(--text-light);
  margin-bottom: 18px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.article-content {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.article-content p {
  margin-bottom: 16px;
}

.article-content h3 {
  color: var(--text-dark);
  margin: 22px 0 12px;
  font-size: 1.22rem;
}

.article-content ul, .article-content ol {
  padding-left: 22px;
  margin-bottom: 16px;
}

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

.article-content a.natural-link {
  color: #0e74da;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

.article-content a.natural-link:hover {
  color: #0284c7;
}

/* 移动端媒体查询 (@media 响应式适配) */
@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    gap: 16px;
    padding: 16px 20px;
  }
  
  .nav-menu {
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .hero-section {
    padding: 55px 0 45px;
  }
  
  .hero-snowflake-bg {
    width: 380px;
    height: 380px;
  }
  
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-cta-group .btn {
    width: 100%;
  }
  
  .hero-trust-metrics {
    gap: 20px;
  }
  
  .advantages-grid {
    grid-template-columns: 1fr;
  }
  
  .support-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-card.featured {
    transform: none;
  }
  
  .pricing-card.featured:hover {
    transform: translateY(-4px);
  }
  
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-nav-container {
    flex-direction: column;
    gap: 12px;
    width: 100%;
  }
  
  .footer-link-title {
    width: 100%;
    text-align: center;
  }
}