/* ==========================================================================
   WgetCloud 官方视觉规范样式表 - Obsidian & Laser Glacier Blue
   Theme: 曜石深空灰与激光冰川蓝商务极客风
   Version: 2026.1 Enterprise Release
   ========================================================================== */

:root {
  /* 基础主色调 */
  --bg-primary: #0a0d10;
  --bg-secondary: #0e1217;
  --bg-card: rgba(14, 18, 23, 0.72);
  --bg-card-hover: rgba(18, 24, 32, 0.85);
  --bg-glass: rgba(10, 13, 16, 0.75);

  /* 激光冰川蓝核心渐变及高亮 */
  --accent-cyan: #00f2fe;
  --accent-blue: #4facfe;
  --accent-gradient: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
  --accent-gradient-hover: linear-gradient(135deg, #26f5fe 0%, #68baff 100%);
  --accent-glow: rgba(0, 242, 254, 0.35);
  --accent-glow-subtle: rgba(0, 242, 254, 0.12);

  /* 边框与微光感 */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 242, 254, 0.22);
  --border-glow-active: rgba(0, 242, 254, 0.55);

  /* 文字颜色层级 */
  --text-main: #f0f4f8;
  --text-muted: #8b9bb4;
  --text-dim: #55657a;
  --text-highlight: #ffffff;

  /* 辅助状态色 */
  --success: #10b981;
  --warning: #f59e0b;
  --purple-glow: rgba(139, 92, 246, 0.25);

  /* 字体与度量 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  line-height: 1.65;
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 242, 254, 0.12), transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 40%, rgba(79, 172, 254, 0.06), transparent 60%);
  background-attachment: fixed;
  overflow-x: hidden;
}

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

img, svg {
  display: block;
  max-width: 100%;
}

ul, ol {
  list-style: none;
}

/* 布局容器 */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 文本渐变特效 */
.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* 亚克力磨砂质感卡片 */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 242, 254, 0.3), transparent);
  opacity: 0.6;
}

.glass-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  box-shadow: 0 12px 36px -10px rgba(0, 0, 0, 0.6), 0 0 24px -6px var(--accent-glow-subtle);
  transform: translateY(-3px);
}

/* 交互按钮体系 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #050a10;
  box-shadow: 0 4px 20px -2px rgba(0, 242, 254, 0.45);
}

.btn-primary:hover {
  background: var(--accent-gradient-hover);
  box-shadow: 0 6px 28px rgba(0, 242, 254, 0.65);
  transform: translateY(-2px);
  color: #000;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  border-color: var(--border-glow);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(0, 242, 254, 0.1);
  border-color: var(--accent-cyan);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(0, 242, 254, 0.2);
}

.btn-glow {
  position: relative;
  overflow: hidden;
}

.btn-glow::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(60deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: rotate(30deg) translateY(-100%);
  transition: transform 0.6s ease;
}

.btn-glow:hover::after {
  transform: rotate(30deg) translateY(100%);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

/* ==========================================================================
   Header 悬浮导航
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px var(--accent-glow);
}

.logo-icon svg {
  width: 20px;
  height: 20px;
  fill: #0a0d10;
}

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

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 6px 0;
}

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

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: var(--transition);
  transform: translateX(-50%);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

/* ==========================================================================
   Hero 核心首屏
   ========================================================================== */
.hero-section {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-bottom: 28px;
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.15);
}

.hero-badge .pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-cyan);
  animation: pulseAnimation 2s infinite;
}

@keyframes pulseAnimation {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 242, 254, 0.7); }
  70% { transform: scale(1.15); box-shadow: 0 0 0 10px rgba(0, 242, 254, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 242, 254, 0); }
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 36px;
  font-weight: 400;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

/* 实时指标展示框 */
.metrics-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
  padding: 24px;
  background: rgba(14, 18, 23, 0.65);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
}

.metric-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--accent-cyan);
  text-shadow: 0 0 15px rgba(0, 242, 254, 0.4);
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ==========================================================================
   核心优势卡片板块
   ========================================================================== */
.section {
  padding: 90px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-cyan);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
}

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

.feature-card {
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.feature-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--accent-cyan);
  transition: var(--transition);
}

.feature-card:hover .feature-icon-box {
  background: var(--accent-gradient);
  color: #0a0d10;
  box-shadow: 0 0 20px var(--accent-glow);
  transform: scale(1.05);
}

.feature-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: #fff;
}

.feature-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 20px;
}

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

.feature-tag-pill {
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
}

/* ==========================================================================
   价格方案对比板块
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

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

.pricing-card.featured {
  border-color: var(--border-glow-active);
  background: rgba(18, 25, 34, 0.85);
  box-shadow: 0 0 35px -5px rgba(0, 242, 254, 0.25);
  transform: translateY(-8px);
}

.pricing-badge {
  position: absolute;
  top: 18px;
  right: 20px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--accent-gradient);
  color: #0a0d10;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

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

.plan-price-box {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.price-number {
  font-size: 3rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: #fff;
  line-height: 1;
}

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

.plan-features-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
  flex-grow: 1;
}

.plan-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.plan-feature-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--accent-cyan);
}

.plan-feature-item strong {
  color: var(--text-main);
}

/* ==========================================================================
   精选长尾技术专题板块 (Articles Section)
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.article-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
}

.article-card-inner {
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
  font-size: 0.82rem;
}

.article-pill {
  padding: 3px 10px;
  background: rgba(0, 242, 254, 0.12);
  color: var(--accent-cyan);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.article-date, .article-read {
  color: var(--text-dim);
}

.article-title {
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 14px;
  color: #fff;
  transition: var(--transition);
}

.article-card:hover .article-title {
  color: var(--accent-cyan);
}

.article-excerpt {
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.7;
  margin-bottom: 24px;
  flex-grow: 1;
}

.article-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-cyan);
  font-weight: 600;
  font-size: 0.92rem;
}

.article-card:hover .article-cta svg {
  transform: translateX(4px);
}

.article-cta svg {
  transition: var(--transition);
}

/* ==========================================================================
   FAQ 手风琴折叠交互
   ========================================================================== */
.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--border-glow);
}

.faq-item.active {
  border-color: var(--border-glow-active);
  background: var(--bg-card-hover);
}

.faq-question {
  width: 100%;
  padding: 22px 26px;
  background: transparent;
  border: none;
  color: #fff;
  font-size: 1.08rem;
  font-weight: 600;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.faq-icon {
  width: 24px;
  height: 24px;
  color: var(--accent-cyan);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out, padding 0.3s ease;
  padding: 0 26px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

.faq-item.active .faq-answer {
  padding-bottom: 24px;
}

/* ==========================================================================
   用户真实好评板块 (Testimonials)
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
}

.stars-row {
  display: flex;
  gap: 4px;
  color: #f59e0b;
  margin-bottom: 16px;
  font-size: 1.1rem;
}

.review-text {
  color: var(--text-main);
  font-size: 0.96rem;
  line-height: 1.7;
  margin-bottom: 24px;
  flex-grow: 1;
  font-style: normal;
}

.reviewer-profile {
  display: flex;
  align-items: center;
  gap: 14px;
}

.avatar-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.2), rgba(79, 172, 254, 0.4));
  border: 1px solid var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
}

.reviewer-info {
  display: flex;
  flex-direction: column;
}

.reviewer-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
}

.reviewer-title {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ==========================================================================
   底部极速转化横幅 (Conversion Banner)
   ========================================================================== */
.conversion-banner {
  padding: 70px 0;
  margin-top: 40px;
}

.banner-box {
  padding: 56px 48px;
  text-align: center;
  background: radial-gradient(ellipse at center, rgba(0, 242, 254, 0.15) 0%, rgba(14, 18, 23, 0.9) 70%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  box-shadow: 0 0 40px rgba(0, 242, 254, 0.15);
}

.banner-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.banner-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 32px;
}

/* ==========================================================================
   Footer 页脚
   ========================================================================== */
.site-footer {
  background: #06080a;
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 36px;
  font-size: 0.9rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand {
  max-width: 320px;
}

.footer-desc {
  color: var(--text-dim);
  font-size: 0.88rem;
  line-height: 1.7;
  margin-top: 16px;
}

.footer-col-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link {
  color: var(--text-muted);
  font-size: 0.88rem;
  transition: var(--transition);
}

.footer-link:hover {
  color: var(--accent-cyan);
  padding-left: 4px;
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-dim);
  font-size: 0.82rem;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-anchor-text {
  color: var(--text-muted);
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-anchor-text:hover {
  color: var(--accent-cyan);
}

/* 回顶按钮 */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 99;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--accent-gradient);
  color: #0a0d10;
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-3px);
}

/* ==========================================================================
   移动端与响应式适配
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.8rem;
  }
  .features-grid,
  .pricing-grid,
  .reviews-grid {
    grid-template-columns: 1fr;
    max-width: 600px;
    margin: 0 auto;
  }
  .pricing-card.featured {
    transform: none;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .metrics-strip {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions .btn-secondary {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .mobile-nav-panel {
    display: none;
    position: fixed;
    top: 76px;
    left: 0;
    width: 100%;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-subtle);
    padding: 24px;
    flex-direction: column;
    gap: 18px;
    z-index: 999;
  }
  .mobile-nav-panel.open {
    display: flex;
  }
  .hero-title {
    font-size: 2.15rem;
  }
  .hero-subtitle {
    font-size: 1rem;
  }
  .section-title {
    font-size: 1.85rem;
  }
  .metrics-strip {
    grid-template-columns: 1fr;
    padding: 18px;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .banner-box {
    padding: 40px 24px;
  }
  .banner-title {
    font-size: 1.65rem;
  }
}