/* ==========================================================================
   闪狐云官网 (ShanhuCloud.lol) - 极速专线官网核心样式表
   域名: https://shanhucloud.lol
   风格: 极客暗黑 (Cyber Dark) + 闪狐焰橙 (Fox Flame) + 霓虹青蓝 (Cyber Cyan)
   适配: 响应式移动端优先 / 所有价格同排对齐 / 性能优化
   ========================================================================== */

:root {
  --bg-dark: #070a14;
  --bg-body: #0a0e1a;
  --bg-surface: rgba(16, 24, 40, 0.75);
  --bg-card: rgba(19, 31, 53, 0.65);
  --bg-card-hover: rgba(26, 42, 71, 0.85);
  --bg-card-featured: rgba(30, 48, 80, 0.9);
  
  --primary: #ff5722;
  --primary-hover: #ff7043;
  --primary-glow: rgba(255, 87, 34, 0.35);
  
  --secondary: #00e5ff;
  --secondary-glow: rgba(0, 229, 255, 0.3);
  
  --accent: #f59e0b;
  --purple: #818cf8;
  
  --text-main: #f8fafc;
  --text-sub: #cbd5e1;
  --text-muted: #8899b0;
  
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(0, 229, 255, 0.25);
  --border-focus: rgba(255, 87, 34, 0.5);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(0, 229, 255, 0.15);
  --shadow-glow-primary: 0 0 35px rgba(255, 87, 34, 0.25);

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 重置与通用规范 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* ==========================================================================
   全景动态九尾天狐背景宇宙系统 (青丘仙山雪岭、巨月临空、流云落樱动态图)
   覆盖整个背景图，显眼震撼，真实灵动
   ========================================================================== */
.fox-bg-universe {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
  background-color: #020612;
}

/* 动态天狐主体画卷：大幅度物理呼吸浮动与景深游弋 */
.dynamic-fox-img-layer {
  position: absolute;
  top: -4%;
  left: -4%;
  width: 108%;
  height: 108%;
  background-image: url('white-fox-bg.webp');
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  animation: cinematicBreath 14s ease-in-out infinite alternate;
  will-change: transform;
  z-index: 1;
}

@keyframes cinematicBreath {
  0% { transform: scale(1.0) translate(0px, 0px); }
  50% { transform: scale(1.035) translate(-10px, -12px); }
  100% { transform: scale(1.0) translate(0px, 0px); }
}

/* 满月神辉光晕 (真实对准右上角皎洁巨月，呼吸光晕) */
.dynamic-moon-halo {
  position: absolute;
  top: 6%;
  right: 17%;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.42) 0%, rgba(224, 242, 254, 0.28) 40%, rgba(0, 229, 255, 0.12) 65%, transparent 80%);
  filter: blur(28px);
  animation: moonHaloPulse 6s ease-in-out infinite alternate;
  z-index: 2;
}

@keyframes moonHaloPulse {
  0% { transform: scale(0.94); opacity: 0.55; }
  100% { transform: scale(1.16); opacity: 0.95; filter: blur(34px); }
}

/* 翻腾仙雾云海层 (在云海瀑布群中飘动) */
.dynamic-cloud-mist {
  position: absolute;
  top: 42%;
  left: -20%;
  width: 140%;
  height: 280px;
  background: radial-gradient(ellipse 70% 45% at 50% 50%, rgba(255, 255, 255, 0.14) 0%, rgba(224, 242, 254, 0.08) 45%, transparent 75%);
  filter: blur(40px);
  animation: mistDrift 16s ease-in-out infinite alternate;
  z-index: 3;
}

@keyframes mistDrift {
  0% { transform: translateX(0px) scaleY(1); opacity: 0.4; }
  50% { transform: translateX(35px) scaleY(1.15); opacity: 0.75; }
  100% { transform: translateX(-25px) scaleY(0.95); opacity: 0.5; }
}

/* 天狐身周青丘仙光流转 */
.dynamic-fox-spirit-glow {
  position: absolute;
  top: 22%;
  left: 28%;
  width: 440px;
  height: 440px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.18) 0%, rgba(255, 255, 255, 0.12) 35%, transparent 70%);
  filter: blur(45px);
  animation: foxGlowPulse 8s ease-in-out infinite alternate;
  z-index: 3;
}

@keyframes foxGlowPulse {
  0% { transform: scale(0.9); opacity: 0.4; }
  100% { transform: scale(1.15); opacity: 0.8; }
}

/* 底部柔和暗夜过渡层，确保下方文字与章节自然融入 */
.fox-bg-universe::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 48%;
  background: linear-gradient(to bottom, transparent 0%, rgba(2, 6, 18, 0.55) 50%, #020612 100%);
  pointer-events: none;
  z-index: 4;
}

#bg-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 5;
}

/* 容器与版心 */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }
}

/* 链接与排版基础 */
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* 按钮通用组件 */
.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;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #ff5722 0%, #ff7844 100%);
  color: #ffffff;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #ff7043 0%, #ff8a65 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(255, 87, 34, 0.5);
  color: #fff;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--text-main);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--secondary);
  color: var(--secondary);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 15px 32px;
  font-size: 1.05rem;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

/* ==========================================================================
   顶部导航栏 (Navbar)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(7, 10, 20, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  background: rgba(7, 10, 20, 0.98);
  border-bottom-color: rgba(0, 229, 255, 0.2);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

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

.brand-logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo-img {
  height: 44px;
  width: 44px;
  object-fit: contain;
  border-radius: 10px;
  filter: drop-shadow(0 2px 10px rgba(0, 229, 255, 0.4));
}

.brand-text-wrap {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #ffffff 0%, #e2e8f0 50%, #00e5ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.brand-domain {
  font-size: 0.75rem;
  color: var(--secondary);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

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

.nav-link {
  font-size: 0.92rem;
  color: var(--text-sub);
  font-weight: 500;
  padding: 6px 4px;
  position: relative;
}

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

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition-fast);
}

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

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

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

/* 移动端抽屉菜单 */
.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  width: 100%;
  background: rgba(10, 14, 26, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 24px 20px;
  z-index: 999;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
  transform: translateY(-100%);
  transition: transform 0.3s ease-in-out;
}

.mobile-nav-drawer.active {
  transform: translateY(0);
}

.mobile-nav-link {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* ==========================================================================
   Hero 主屏区域与九尾天狐专属独立展示舞台 (整体紧凑上移，首屏完整呈现)
   ========================================================================== */
.hero-section {
  position: relative;
  width: 100%;
  min-height: 760px;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow: hidden;
  padding: 0 0 35px;
}

.hero-container-rel {
  position: relative;
  z-index: 10;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 40px;
  position: relative;
}

/* 左侧文本容器：严格约束在左侧 580px 空间，具有高层级与清晰背景对比度，与右侧狐仙绝无重叠 */
.hero-content {
  max-width: 580px;
  position: relative;
  z-index: 10;
}

.hero-badge-wrap {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 87, 34, 0.12);
  border: 1px solid rgba(255, 87, 34, 0.35);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 24px;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ff5722;
  box-shadow: 0 0 10px #ff5722;
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.hero-badge-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: #ff9e80;
  letter-spacing: 0.02em;
}

.hero-title {
  font-size: 3.2rem;
  line-height: 1.18;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.text-gradient-orange {
  background: linear-gradient(135deg, #ff5722 0%, #ff8a65 50%, #ffab40 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-cyan {
  background: linear-gradient(135deg, #00e5ff 0%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-sub);
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: #ffffff;
  font-family: var(--font-mono);
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Hero 主屏区域：九尾天狐全景覆盖整个背景 + 文字往下拉 (零重叠)
   ========================================================================== */
/* ==========================================================================
   黄金首屏视觉布局：文字直接融入九尾天狐全景背景（彻底移除黑色板，文字多层立体阴影保障高对比度）
   margin-top: 290px 确保九尾狐胸首与九尾完全可见，文字直接立于月华雪岩背景之上
   ========================================================================== */
.hero-bottom-content-wrap {
  position: relative;
  z-index: 12;
  width: 100%;
  max-width: 1060px;
  margin-top: 290px; /* 文字精准定位在九尾狐胸首下方，九尾天狐完整展露，无黑色背景板 */
  padding: 0 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border: none;
  border-radius: 0;
  box-shadow: none;
}

.hero-bottom-content-wrap .hero-badge-wrap {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(8, 14, 28, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 87, 34, 0.45);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.6);
  padding: 5px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.hero-bottom-content-wrap .hero-title {
  font-size: 2.75rem;
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
  filter: drop-shadow(0 3px 12px rgba(0, 0, 0, 0.95)) drop-shadow(0 1px 3px rgba(0, 0, 0, 0.9));
}

.hero-bottom-content-wrap .hero-desc {
  font-size: 1.02rem;
  color: #f1f5f9;
  max-width: 820px;
  margin-bottom: 22px;
  line-height: 1.65;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.95), 0 4px 20px rgba(0, 0, 0, 0.9);
}

.hero-bottom-content-wrap .hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 24px;
}

.hero-bottom-content-wrap .hero-cta-group .btn-outline {
  background: rgba(8, 14, 28, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.28);
}

.hero-bottom-content-wrap .hero-cta-group .btn-outline:hover {
  background: rgba(0, 229, 255, 0.15);
  border-color: #00e5ff;
}

.hero-bottom-content-wrap .hero-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  width: 100%;
  max-width: 860px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.hero-bottom-content-wrap .stat-item {
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.95));
}

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

.badge-icon {
  font-size: 0.95rem;
}

/* ==========================================================================
   通用Section标题
   ========================================================================== */
.section {
  padding: 90px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--secondary);
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.25);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

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

/* ==========================================================================
   核心特性 (Features)
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  transition: all var(--transition-normal);
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.feature-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(255, 87, 34, 0.15) 0%, rgba(0, 229, 255, 0.15) 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #ffffff;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-sub);
  line-height: 1.65;
}

/* ==========================================================================
   核心套餐价格专区 (所有价格要同排 / ALL PRICES IN ONE ROW)
   ========================================================================== */
.pricing-section {
  padding: 90px 0;
  background: linear-gradient(180deg, rgba(7, 10, 20, 0.4) 0%, rgba(16, 26, 46, 0.6) 50%, rgba(7, 10, 20, 0.4) 100%);
  position: relative;
}

.pricing-controls {
  display: flex;
  justify-content: center;
  margin-bottom: 36px;
}

.pricing-tabs {
  display: inline-flex;
  background: rgba(0, 0, 0, 0.45);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 4px;
}

.pricing-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-sub);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pricing-tab-btn.active {
  background: linear-gradient(135deg, #ff5722 0%, #ff7844 100%);
  color: #ffffff;
  box-shadow: 0 4px 15px var(--primary-glow);
}

.pricing-row-wrapper {
  width: 100%;
  overflow-x: auto;
  padding-bottom: 16px;
  -webkit-overflow-scrolling: touch;
}

.pricing-row-container {
  display: grid;
  grid-template-columns: repeat(5, minmax(220px, 1fr));
  gap: 16px;
  align-items: stretch;
  min-width: 1100px;
}

.pricing-row-container.onetime-grid {
  grid-template-columns: repeat(3, minmax(280px, 1fr));
  max-width: 980px;
  margin: 0 auto;
  min-width: 0;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: all var(--transition-normal);
  backdrop-filter: blur(16px);
}

.pricing-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(0, 229, 255, 0.4);
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}

.pricing-card.featured {
  background: linear-gradient(180deg, rgba(32, 53, 88, 0.9) 0%, rgba(19, 31, 53, 0.85) 100%);
  border: 2px solid #ff5722;
  box-shadow: var(--shadow-glow-primary);
  transform: translateY(-4px);
}

.pricing-card.featured:hover {
  transform: translateY(-8px);
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #ff5722 0%, #ff9800 100%);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 3px 12px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  box-shadow: 0 4px 10px rgba(255, 87, 34, 0.4);
}

.plan-header {
  margin-bottom: 20px;
  text-align: center;
}

.plan-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 6px;
}

.plan-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  min-height: 38px;
  line-height: 1.4;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
  margin: 16px 0 6px;
}

.plan-currency {
  font-size: 1.3rem;
  font-weight: 700;
  color: #ff7043;
}

.plan-price {
  font-size: 2.6rem;
  font-weight: 900;
  font-family: var(--font-mono);
  color: #ffffff;
  line-height: 1;
}

.plan-period {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.plan-annually {
  font-size: 0.76rem;
  color: var(--secondary);
  font-family: var(--font-mono);
}

.plan-features {
  list-style: none;
  margin: 20px 0;
  padding: 16px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.plan-feature-item {
  font-size: 0.84rem;
  color: var(--text-sub);
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.45;
}

.plan-feature-icon {
  color: #10b981;
  font-size: 0.95rem;
  line-height: 1.2;
}

.plan-cta {
  width: 100%;
  margin-top: 8px;
}

/* ==========================================================================
   客户端下载与外部权威外链 (Clients & Outbound Links)
   ========================================================================== */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.client-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.client-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(0, 229, 255, 0.35);
  transform: translateY(-4px);
}

.client-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.client-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.client-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
}

.client-platform {
  font-size: 0.78rem;
  color: var(--secondary);
}

.client-desc {
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.5;
  margin-bottom: 18px;
}

.client-links {
  display: flex;
  gap: 8px;
}

.client-ext-link {
  font-size: 0.8rem;
  color: var(--secondary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.client-ext-link:hover {
  color: #ffffff;
}

/* ==========================================================================
   文章专栏与知识库 (Articles Knowledge Base)
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
}

.article-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.article-body {
  padding: 24px;
}

.article-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(255, 87, 34, 0.1);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.article-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.45;
  margin-bottom: 10px;
}

.article-excerpt {
  font-size: 0.88rem;
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-footer {
  padding: 14px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.article-read-btn {
  color: var(--secondary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.article-read-btn:hover {
  color: #ffffff;
}

/* ==========================================================================
   真实用户评价 (User Reviews & Testimonials)
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
}

.review-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-3px);
}

.review-stars {
  color: #f59e0b;
  font-size: 1.1rem;
  margin-bottom: 14px;
}

.review-content {
  font-size: 0.92rem;
  color: var(--text-sub);
  line-height: 1.65;
  margin-bottom: 20px;
}

.review-user-info {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.review-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff5722 0%, #38bdf8 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 1rem;
}

.review-meta {
  display: flex;
  flex-direction: column;
}

.review-name {
  font-size: 0.92rem;
  font-weight: 700;
  color: #ffffff;
}

.review-role {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ==========================================================================
   常见问题解答 (FAQ Accordion)
   ========================================================================== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

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

.faq-item.active {
  border-color: rgba(0, 229, 255, 0.35);
  background: rgba(22, 34, 58, 0.85);
}

.faq-question {
  width: 100%;
  background: transparent;
  border: none;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
}

.faq-icon {
  font-size: 1.2rem;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}

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

.faq-answer {
  display: none;
  padding: 0 24px 20px;
  font-size: 0.95rem;
  color: var(--text-sub);
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  display: block;
}

/* ==========================================================================
   CTA 召唤专区 (Call to Action Banner)
   ========================================================================== */
.cta-section {
  padding: 80px 0;
}

.cta-box {
  background: radial-gradient(circle at 50% 0%, rgba(255, 87, 34, 0.25) 0%, rgba(15, 23, 42, 0.8) 75%);
  border: 1px solid rgba(255, 87, 34, 0.35);
  border-radius: var(--radius-lg);
  padding: 60px 32px;
  text-align: center;
  box-shadow: 0 0 50px rgba(255, 87, 34, 0.15);
  max-width: 1000px;
  margin: 0 auto;
}

.cta-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: #ffffff;
}

.cta-desc {
  font-size: 1.15rem;
  color: var(--text-sub);
  max-width: 680px;
  margin: 0 auto 32px;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ==========================================================================
   页脚 (Footer)
   ========================================================================== */
.site-footer {
  background: #04070e;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 60px 0 30px;
  color: var(--text-sub);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-top: 14px;
}

.footer-col-title {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 18px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

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

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

/* ==========================================================================
   移动端专属吸底悬浮按钮 (Mobile Sticky Bottom Bar)
   ========================================================================== */
.mobile-sticky-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(7, 10, 20, 0.95);
  backdrop-filter: blur(16px);
  border-top: 1px solid rgba(255, 87, 34, 0.3);
  padding: 10px 16px;
  z-index: 998;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5);
  align-items: center;
  justify-content: space-between;
}

.sticky-text-wrap {
  display: flex;
  flex-direction: column;
}

.sticky-price {
  font-size: 1.1rem;
  font-weight: 800;
  color: #ff5722;
}

.sticky-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ==========================================================================
   文章详情页专用样式 (Article Content Styles)
   ========================================================================== */
.article-header-section {
  padding: 60px 0 30px;
  background: radial-gradient(circle at 50% 0%, rgba(0, 229, 255, 0.1) 0%, transparent 60%);
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.breadcrumb-nav a:hover {
  color: var(--secondary);
}

.article-main-title {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 18px;
  color: #ffffff;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  padding: 40px 0 80px;
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #e2e8f0;
}

.article-content h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: #ffffff;
  margin: 40px 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-content h3 {
  font-size: 1.28rem;
  font-weight: 700;
  color: var(--secondary);
  margin: 28px 0 12px;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul, .article-content ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

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

.article-content blockquote {
  background: rgba(255, 87, 34, 0.08);
  border-left: 4px solid var(--primary);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
  color: #ffccbc;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
}

.article-content th, .article-content td {
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-align: left;
}

.article-content th {
  background: rgba(255, 255, 255, 0.06);
  font-weight: 700;
  color: #ffffff;
}

.article-content a {
  color: var(--secondary);
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
  backdrop-filter: blur(12px);
}

.widget-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.related-article-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.related-article-link {
  font-size: 0.88rem;
  color: var(--text-sub);
  line-height: 1.45;
  transition: color var(--transition-fast);
}

.related-article-link:hover {
  color: var(--secondary);
}

/* ==========================================================================
   移动端与响应式断点适配 (Responsive Media Queries)
   ========================================================================== */
@media (max-width: 1100px) {
  .hero-section {
    min-height: 740px;
    padding-bottom: 30px;
  }
  .hero-bottom-content-wrap {
    margin-top: 280px;
  }
  .hero-bottom-content-wrap .hero-title {
    font-size: 2.4rem;
  }
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .clients-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .article-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 820px) {
  .nav-links, .nav-actions {
    display: none;
  }
  .mobile-menu-toggle {
    display: block;
  }
  .mobile-nav-drawer {
    display: flex;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .dynamic-fox-img-layer {
    top: -2%;
    left: -10%;
    width: 120%;
    height: 104%;
    background-position: 56% top;
  }
  .dynamic-moon-halo {
    top: 4%;
    right: 4%;
    width: 180px;
    height: 180px;
  }
  .hero-section {
    min-height: auto;
    padding: 70px 16px 45px;
    overflow: hidden;
  }
  .hero-fox-stage {
    display: none;
  }
  .hero-bottom-content-wrap {
    margin-top: 285px;
    padding: 0 10px;
    max-width: 100%;
    border-radius: 0;
    background: transparent;
    border: none;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .hero-bottom-content-wrap .hero-badge-wrap {
    max-width: 95%;
    padding: 4px 12px;
    margin-bottom: 10px;
  }
  .hero-bottom-content-wrap .hero-badge-text {
    font-size: 0.76rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .hero-bottom-content-wrap .hero-title {
    font-size: clamp(1.5rem, 5.8vw, 1.95rem);
    line-height: 1.25;
    margin-bottom: 10px;
  }
  .hero-bottom-content-wrap .hero-desc {
    font-size: 0.88rem;
    line-height: 1.6;
    margin-bottom: 16px;
  }
  .hero-bottom-content-wrap .hero-cta-group {
    flex-direction: column;
    gap: 10px;
    width: 100%;
    margin-bottom: 18px;
  }
  .hero-bottom-content-wrap .hero-cta-group .btn {
    width: 100%;
    justify-content: center;
  }
  .hero-bottom-content-wrap .hero-stats-row {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    width: 100%;
    padding-top: 14px;
  }
  .fox-floating-badge {
    display: none !important;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .mobile-sticky-bar {
    display: flex;
  }
  body {
    padding-bottom: 60px;
  }
}

@media (max-width: 768px) {
  .pricing-row-wrapper {
    margin: 0 -16px;
    padding: 0 16px 20px;
  }
  .pricing-row-container {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 14px;
    min-width: 0;
  }
  .pricing-card {
    min-width: 260px;
    scroll-snap-align: center;
  }
  .pricing-row-container.onetime-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    min-width: 0;
  }
}