/* 一翻云 yifanyun.vip 全局样式表 - 活力多阶暖橙与全图静态+动态高转化设计版 (Multi-Spectrum Vibrant Orange & Full-Canvas Tech CRO) */
:root {
  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  
  /* 多梯度丰富橙色色系体系 (Multi-Spectrum Orange Hierarchy) */
  --orange-flame: #ff3800;       /* 烈焰极速橙 - 高能行动点与动态高光 */
  --orange-blaze: #ff5414;       /* 炽烈暖阳橙 - 标题渐变与重度强调 */
  --orange-electric: #ff6b00;    /* 核心电光橙 - 品牌主色与测速仪表盘核心 */
  --orange-tangerine: #ff7a00;   /* 亮丽蜜桔橙 - 悬浮交互与光球主核 */
  --orange-mandarin: #f97316;    /* 经典暖橙 - 基础正文链接与徽章 */
  --orange-coral: #ff8243;       /* 柔和珊瑚橙 - 次级特性徽章与流媒体状态 */
  --orange-amber: #f59e0b;       /* 琥珀金橙 - 吞吐指标、星级评分与高光 */
  --orange-sunburst: #fbbf24;    /* 辉煌暖金 - 极光光斑边缘与微呼吸点 */
  --orange-rich: #ea580c;        /* 醇厚柿红 - 按钮按压态与二级小标 */
  --orange-burnt: #c2410c;       /* 焦糖深橙 - 边框高对比度加固 */
  --orange-deep: #7c2d12;        /* 浓郁深褐橙 - 浅底深色文字与投影色基 */
  --orange-apricot: #fed7aa;     /* 杏黄描边 - 磨砂玻璃卡片自然边框 */
  --orange-peach: #ffedd5;       /* 蜜桃浅底 - 模块高光卡片微渐变 */
  --orange-cream: #fff7ed;       /* 奶油暖白 - 背景与次级容器内底 */
  --orange-tint: #fffbf5;        /* 极柔珍珠白 - 页面基础基调 */

  /* 基础系统色彩别名映射 */
  --color-bg: var(--orange-tint);
  --color-bg-alt: #ffffff;
  --color-surface: #ffffff;
  --color-surface-trans: rgba(255, 255, 255, 0.88);
  --color-border: var(--orange-apricot);
  --color-border-light: var(--orange-peach);
  --color-text-main: #1e293b;
  --color-text-title: #0f172a;
  --color-text-muted: #334155;
  --color-text-light: #64748b;
  --color-primary: var(--orange-electric);
  --color-primary-hover: var(--orange-blaze);
  --color-primary-light: var(--orange-cream);
  --color-primary-border: #fdba74;
  --color-accent: var(--orange-amber);
  --color-accent-hover: #d97706;
  --color-accent-light: #fef3c7;
  
  /* 多重丰富橙色渐变组合 (Multi-Shade Orange Gradients) */
  --color-orange-gradient: linear-gradient(135deg, var(--orange-flame) 0%, var(--orange-electric) 45%, var(--orange-amber) 100%);
  --color-orange-gradient-hover: linear-gradient(135deg, var(--orange-blaze) 0%, var(--orange-rich) 50%, #d97706 100%);
  --color-gradient-sunset: linear-gradient(135deg, var(--orange-blaze) 0%, var(--orange-tangerine) 50%, var(--orange-sunburst) 100%);
  --color-gradient-amber-glow: linear-gradient(135deg, var(--orange-electric) 0%, var(--orange-coral) 50%, var(--orange-amber) 100%);
  --color-gradient-sunburst: linear-gradient(135deg, var(--orange-tangerine) 0%, var(--orange-sunburst) 100%);
  --color-gradient-card-glass: linear-gradient(145deg, rgba(255, 255, 255, 0.94) 0%, rgba(255, 247, 237, 0.86) 100%);
  --color-card-gradient: var(--color-gradient-card-glass);
  
  --color-success: #10b981;
  --color-success-bg: #ecfdf5;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;
  
  /* 多阶橙色投影体系 (Multi-Layer Orange Shadows) */
  --shadow-sm: 0 2px 6px rgba(255, 107, 0, 0.06);
  --shadow-md: 0 10px 25px -5px rgba(255, 107, 0, 0.12), 0 8px 10px -6px rgba(245, 158, 11, 0.08);
  --shadow-lg: 0 20px 38px -10px rgba(255, 107, 0, 0.22), 0 10px 15px -3px rgba(255, 56, 0, 0.1);
  --shadow-hover: 0 22px 48px -8px rgba(255, 107, 0, 0.32), 0 0 0 1px rgba(255, 122, 0, 0.25);
  --glow-orange: 0 0 28px rgba(255, 107, 0, 0.42);
  --glow-amber: 0 0 24px rgba(245, 158, 11, 0.38);
  --glow-flame: 0 0 32px rgba(255, 56, 0, 0.45);
  
  --max-width: 1180px;
  --max-prose-width: 840px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text-muted);
  line-height: 1.65;
  letter-spacing: -0.01em;
  padding-bottom: 74px;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

@media (min-width: 769px) {
  body {
    padding-bottom: 0;
  }
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: all 0.2s ease;
}

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

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

/* 布局容器 */
.site-container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
  position: relative;
  z-index: 2;
}

.site-container-prose {
  width: 100%;
  max-width: var(--max-prose-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
  position: relative;
  z-index: 2;
}

/* 全图静态+动态科技画布背景系统 (Full-Page Static + Dynamic Ambient Canvas) */
.site-bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

/* 动态多重橙色星云光斑 (5 个不同橙色梯度，带平滑漂移与呼吸动效) */
.bg-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(60px);
  will-change: transform;
}

.bg-orb-flame {
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(255, 56, 0, 0.20) 0%, rgba(255, 107, 0, 0.08) 55%, transparent 70%);
  top: -120px;
  left: -80px;
  animation: orb-drift-1 16s ease-in-out infinite alternate;
}

.bg-orb-electric {
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(255, 122, 0, 0.18) 0%, rgba(245, 158, 11, 0.08) 50%, transparent 70%);
  top: 10%;
  right: -100px;
  animation: orb-drift-2 18s ease-in-out infinite alternate;
}

.bg-orb-amber {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.16) 0%, rgba(251, 191, 36, 0.07) 60%, transparent 70%);
  top: 45%;
  left: 5%;
  animation: orb-drift-3 22s ease-in-out infinite alternate;
}

.bg-orb-coral {
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(255, 130, 67, 0.18) 0%, rgba(255, 84, 20, 0.08) 50%, transparent 70%);
  top: 68%;
  right: 2%;
  animation: orb-drift-4 20s ease-in-out infinite alternate;
}

.bg-orb-sunburst {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.20) 0%, rgba(255, 107, 0, 0.07) 60%, transparent 70%);
  bottom: -60px;
  left: 28%;
  animation: orb-drift-5 19s ease-in-out infinite alternate;
}

@keyframes orb-drift-1 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(70px, 45px) scale(1.12); }
  100% { transform: translate(-35px, 80px) scale(0.95); }
}

@keyframes orb-drift-2 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-60px, 55px) scale(1.08); }
  100% { transform: translate(40px, -45px) scale(0.96); }
}

@keyframes orb-drift-3 {
  0% { transform: translate(0, 0) scale(0.96); }
  50% { transform: translate(50px, -50px) scale(1.14); }
  100% { transform: translate(-45px, 40px) scale(1); }
}

@keyframes orb-drift-4 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-45px, -45px) scale(1.08); }
  100% { transform: translate(55px, 45px) scale(0.94); }
}

@keyframes orb-drift-5 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(60px, -35px) scale(1.15); }
  100% { transform: translate(-55px, -25px) scale(0.92); }
}

/* 全图静态高精矢量蓝图 SVG (Full-Page Static Blueprint SVG) */
.bg-canvas-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.9;
}

/* 动态扫描光束 (Cyber Scanning Beam) */
.bg-scan-beam {
  position: absolute;
  top: -120px;
  left: 0;
  width: 100%;
  height: 140px;
  background: linear-gradient(180deg, transparent 0%, rgba(255, 107, 0, 0.05) 50%, rgba(245, 158, 11, 0.09) 85%, rgba(255, 255, 255, 0.18) 100%);
  filter: blur(5px);
  animation: cyber-scan-sweep 16s linear infinite;
  pointer-events: none;
}

@keyframes cyber-scan-sweep {
  0% { transform: translateY(-120px); opacity: 0; }
  8% { opacity: 1; }
  92% { opacity: 1; }
  100% { transform: translateY(115vh); opacity: 0; }
}

/* 局部微背景修饰器兼容类 */
.bg-ambient-wrapper {
  position: relative;
  overflow: hidden;
}

.bg-pattern-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  opacity: 0.6;
}

.floating-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(50px);
  pointer-events: none;
  z-index: 1;
  animation: float-orb 10s infinite ease-in-out alternate;
}

.orb-1 {
  width: 320px;
  height: 320px;
  background: rgba(255, 56, 0, 0.16);
  top: -80px;
  left: -60px;
}

.orb-2 {
  width: 280px;
  height: 280px;
  background: rgba(245, 158, 11, 0.14);
  top: 180px;
  right: -50px;
  animation-delay: -5s;
}

@keyframes float-orb {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, 20px) scale(1.08); }
  100% { transform: translate(-20px, 40px) scale(0.95); }
}

/* 导航栏 - 磨砂暖白玻璃质感 */
.site-header {
  background-color: var(--color-surface-trans);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border-light);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: all 0.25s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--color-text-title);
  text-decoration: none;
  min-height: 44px;
}

.site-logo:hover {
  text-decoration: none;
  color: var(--color-primary);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-orange-gradient);
  color: #fff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 900;
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.35);
  transition: transform 0.2s ease;
}

.site-logo:hover .logo-icon {
  transform: rotate(6deg) scale(1.05);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--color-text-muted);
  transition: all 0.2s ease;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-primary);
  text-decoration: none;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 8px;
  left: 0;
  right: 0;
  height: 2.5px;
  background: var(--color-orange-gradient);
  border-radius: 2px;
}

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

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  cursor: pointer;
  color: var(--color-text-title);
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.mobile-menu-btn:hover {
  background-color: var(--color-primary-light);
}

.mobile-menu-btn svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

/* 按钮设计 - 暖橙高能渐变 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  font-size: 0.98rem;
  font-weight: 800;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
  min-height: 44px;
  position: relative;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--color-orange-gradient);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(249, 115, 22, 0.4);
}

.btn-primary:hover {
  background: var(--color-orange-gradient-hover);
  color: #ffffff;
  box-shadow: 0 8px 24px rgba(249, 115, 22, 0.5);
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--color-text-title);
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary-hover);
}

.btn-large {
  padding: 14px 32px;
  font-size: 1.1rem;
  border-radius: var(--radius-md);
}

.btn-block {
  width: 100%;
}

/* 顶部认证呼吸徽章 */
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  font-size: 0.88rem;
  font-weight: 800;
  border-radius: var(--radius-full);
  background-color: #ffffff;
  border: 1px solid var(--color-border);
  color: var(--color-primary-hover);
  box-shadow: 0 2px 8px rgba(249, 115, 22, 0.12);
  margin-bottom: 24px;
  transition: transform 0.2s ease;
}

.badge-pill:hover {
  transform: scale(1.02);
}

.pulse-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--color-primary);
  position: relative;
}

.pulse-dot::after {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  border-radius: 50%;
  background-color: var(--color-primary);
  opacity: 0.6;
  animation: pulse-ring 2s infinite ease-out;
}

@keyframes pulse-ring {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(2.6); opacity: 0; }
}

/* 区块通用 */
.section {
  padding: 76px 0;
  position: relative;
}

.section-alt {
  background-color: #ffffff;
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.section-header {
  text-align: center;
  max-width: 740px;
  margin: 0 auto 50px;
  position: relative;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 900;
  color: var(--color-text-title);
  line-height: 1.3;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 1.08rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* Hero 区块 */
.hero-section {
  padding: 72px 0 64px;
  text-align: center;
  position: relative;
}

.hero-content {
  max-width: 880px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: 3rem;
  font-weight: 950;
  line-height: 1.22;
  color: var(--color-text-title);
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}

.hero-title-highlight {
  background: var(--color-orange-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline;
}

.hero-subtitle {
  font-size: 1.22rem;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 30px;
}

.hero-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-text-light);
  margin-bottom: 38px;
  flex-wrap: wrap;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 交互式 Hero 测速面板 (CRO 动态多阶暖橙高转化控制台) */
.hero-console {
  max-width: 680px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 2px solid var(--orange-apricot);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), 0 0 25px rgba(255, 107, 0, 0.15);
  overflow: hidden;
  text-align: left;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.hero-console:hover {
  border-color: var(--orange-tangerine);
  box-shadow: var(--shadow-hover), 0 0 35px rgba(255, 107, 0, 0.25);
}

.console-header {
  background: linear-gradient(90deg, rgba(255, 247, 237, 0.95) 0%, rgba(255, 255, 255, 0.9) 100%);
  border-bottom: 1px solid var(--color-border-light);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.console-dots {
  display: flex;
  gap: 7px;
}

.console-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  transition: transform 0.2s ease;
}

.console-dot:hover {
  transform: scale(1.2);
}

.dot-red { 
  background: var(--orange-flame); 
  box-shadow: 0 0 8px rgba(255, 56, 0, 0.5); 
}
.dot-yellow { 
  background: var(--orange-amber); 
  box-shadow: 0 0 8px rgba(245, 158, 11, 0.5); 
}
.dot-green { 
  background: #10b981; 
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.5); 
}

.console-tabs {
  display: flex;
  gap: 6px;
}

.console-tab-btn {
  background: transparent;
  border: 1px solid transparent;
  padding: 7px 14px;
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.18s ease;
  min-height: 38px;
}

.console-tab-btn:hover {
  background-color: var(--orange-cream);
  color: var(--orange-electric);
}

.console-tab-btn.is-active {
  background: var(--color-orange-gradient);
  border-color: transparent;
  color: #ffffff;
  box-shadow: 0 3px 12px rgba(255, 107, 0, 0.35);
}

.console-body {
  padding: 26px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 22px;
  align-items: center;
}

.console-info-label {
  font-size: 0.85rem;
  color: var(--color-text-light);
  font-weight: 600;
  margin-bottom: 4px;
}

.console-info-title {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--color-text-title);
  margin-bottom: 8px;
}

.console-info-route {
  font-size: 0.94rem;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* 动态信号量柱与 Ping 延迟展示 */
.console-ping-box {
  background: linear-gradient(135deg, rgba(255, 247, 237, 0.95) 0%, rgba(255, 237, 213, 0.9) 100%);
  border: 1.5px solid var(--orange-tangerine);
  border-radius: var(--radius-md);
  padding: 16px 22px;
  text-align: center;
  min-width: 145px;
  box-shadow: 0 4px 14px rgba(255, 107, 0, 0.16), inset 0 0 10px rgba(255, 122, 0, 0.06);
}

.console-ping-num {
  font-size: 2.3rem;
  font-weight: 950;
  color: var(--orange-electric);
  line-height: 1;
  margin-bottom: 6px;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 1px 3px rgba(255, 107, 0, 0.3);
}

.console-ping-label {
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--orange-burnt);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.console-signal-bars {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 14px;
  margin-right: 4px;
}

.signal-bar {
  width: 3.5px;
  border-radius: 2px;
  animation: pulse-signal 1.8s infinite ease-in-out alternate;
}

.bar-1 { height: 40%; background-color: var(--orange-amber); animation-delay: 0.1s; }
.bar-2 { height: 65%; background-color: var(--orange-tangerine); animation-delay: 0.25s; }
.bar-3 { height: 85%; background-color: var(--orange-electric); animation-delay: 0.4s; }
.bar-4 { height: 100%; background-color: var(--orange-flame); animation-delay: 0.55s; }

@keyframes pulse-signal {
  0% { opacity: 0.45; transform: scaleY(0.7); }
  100% { opacity: 1; transform: scaleY(1); }
}

.console-footer {
  background: rgba(255, 247, 237, 0.85);
  border-top: 1px solid var(--color-border-light);
  padding: 12px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

/* 特性卡网格 - 暖橙磨砂科技卡片 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--color-gradient-card-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 34px 30px;
  box-shadow: var(--shadow-sm);
  transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3.5px;
  background: var(--color-orange-gradient);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--orange-tangerine);
  box-shadow: 0 18px 40px -8px rgba(255, 107, 0, 0.24), 0 0 0 1px rgba(255, 122, 0, 0.2);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  transition: all 0.25s ease;
}

/* 4 张特性卡各自拥有独特的多阶橙色独立渐变 */
.feature-card:nth-child(1) .feature-icon-wrap {
  background: linear-gradient(135deg, var(--orange-flame), var(--orange-tangerine));
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(255, 56, 0, 0.35);
}
.feature-card:nth-child(2) .feature-icon-wrap {
  background: linear-gradient(135deg, var(--orange-electric), var(--orange-amber));
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(255, 107, 0, 0.35);
}
.feature-card:nth-child(3) .feature-icon-wrap {
  background: linear-gradient(135deg, var(--orange-coral), var(--orange-sunburst));
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(255, 130, 67, 0.35);
}
.feature-card:nth-child(4) .feature-icon-wrap {
  background: linear-gradient(135deg, var(--orange-rich), var(--orange-blaze));
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(234, 88, 12, 0.35);
}

.feature-card:hover .feature-icon-wrap {
  transform: scale(1.08) rotate(3deg);
  box-shadow: 0 6px 20px rgba(255, 107, 0, 0.45);
}

.feature-icon-wrap svg {
  width: 28px;
  height: 28px;
  stroke: currentColor;
  stroke-width: 2.2;
  fill: none;
}

.feature-title {
  font-size: 1.35rem;
  font-weight: 850;
  color: var(--color-text-title);
  margin-bottom: 10px;
}

.feature-desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* 流媒体与 AI 支持生态网格 */
.ecosystem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.ecosystem-card {
  background: var(--color-gradient-card-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px 24px;
  text-align: left;
  transition: all 0.24s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-sm);
  position: relative;
}

.ecosystem-card:hover {
  border-color: var(--orange-tangerine);
  transform: translateY(-4px);
  box-shadow: 0 14px 30px -6px rgba(255, 107, 0, 0.18), 0 0 0 1px rgba(255, 122, 0, 0.15);
}

.ecosystem-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.ecosystem-name {
  font-size: 1.2rem;
  font-weight: 850;
  color: var(--color-text-title);
}

.ecosystem-badge {
  font-size: 0.8rem;
  font-weight: 800;
  padding: 4px 11px;
  border-radius: var(--radius-full);
  background-color: var(--orange-cream);
  color: var(--orange-burnt);
  border: 1px solid var(--orange-apricot);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.ecosystem-desc {
  font-size: 0.94rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* 使用场景卡 - 暖色真实情境徽章增强 */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.scenario-card {
  background: var(--color-gradient-card-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 30px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all 0.26s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.scenario-card:hover {
  border-color: var(--orange-tangerine);
  box-shadow: 0 16px 36px -6px rgba(255, 107, 0, 0.22), 0 0 0 1px rgba(255, 122, 0, 0.18);
  transform: translateY(-5px);
}

.scenario-header {
  margin-bottom: 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border-light);
}

.scenario-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--orange-rich);
  background: linear-gradient(90deg, var(--orange-cream) 0%, var(--orange-peach) 100%);
  border: 1px solid var(--orange-apricot);
  padding: 3px 10px;
  border-radius: 6px;
  margin-bottom: 10px;
}

.scenario-title {
  font-size: 1.3rem;
  font-weight: 850;
  color: var(--color-text-title);
  margin-bottom: 6px;
}

.scenario-device {
  font-size: 0.9rem;
  color: var(--orange-amber);
  font-weight: 800;
}

.scenario-desc {
  font-size: 0.98rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  flex-grow: 1;
}

/* 定价卡网格 - 暖橙高转化推荐档 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: var(--color-gradient-card-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 38px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.pricing-card.featured {
  border: 2.5px solid var(--orange-electric);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 247, 237, 0.95) 100%);
  box-shadow: 0 20px 48px -6px rgba(255, 107, 0, 0.32), 0 0 25px rgba(255, 56, 0, 0.15);
  transform: translateY(-4px);
}

.pricing-card.featured:hover {
  transform: translateY(-8px);
  box-shadow: 0 26px 56px -6px rgba(255, 107, 0, 0.42), 0 0 35px rgba(255, 56, 0, 0.25);
}

.pricing-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-orange-gradient);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 900;
  padding: 6px 20px;
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
  box-shadow: 0 4px 16px rgba(255, 56, 0, 0.45);
}

.pricing-audience {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--orange-rich);
  margin-bottom: 8px;
}

.pricing-name {
  font-size: 1.55rem;
  font-weight: 950;
  color: var(--color-text-title);
  margin-bottom: 12px;
}

.pricing-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 18px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border-light);
}

.pricing-currency {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--orange-rich);
}

.pricing-amount {
  font-size: 2.9rem;
  font-weight: 950;
  line-height: 1;
  color: var(--orange-electric);
}

.pricing-period {
  font-size: 0.95rem;
  color: var(--color-text-light);
}

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

.pricing-feature-item {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.pricing-feature-item::before {
  content: "✓";
  color: var(--color-primary);
  font-weight: 900;
  font-size: 1.1rem;
}

/* FAQ 常见问题折叠 */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.faq-item {
  background: var(--color-gradient-card-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  transition: all 0.24s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-sm);
}

.faq-item:hover {
  border-color: var(--orange-tangerine);
  box-shadow: 0 10px 25px -5px rgba(255, 107, 0, 0.16);
}

.faq-item.is-open {
  border-color: var(--orange-electric);
  border-left: 4px solid var(--orange-flame);
  box-shadow: 0 12px 28px -6px rgba(255, 107, 0, 0.2);
}

.faq-question-btn {
  width: 100%;
  background: none;
  border: none;
  padding: 0;
  font-size: 1.18rem;
  font-weight: 850;
  color: var(--color-text-title);
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
}

.faq-icon {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--orange-electric);
  margin-left: 14px;
  line-height: 1;
  transition: transform 0.2s ease;
}

.faq-answer {
  font-size: 0.98rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border-light);
  display: none;
}

.faq-item.is-open .faq-answer {
  display: block;
}

/* 底部 Final CTA - 多阶暖橙高能渐变大色块与内嵌背景图 */
.final-cta-section {
  padding: 84px 0;
  text-align: center;
  position: relative;
  z-index: 2;
}

.final-cta-box {
  max-width: 840px;
  margin: 0 auto;
  background: var(--color-orange-gradient);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  color: #ffffff;
  box-shadow: 0 25px 60px -10px rgba(255, 56, 0, 0.45), 0 0 35px rgba(255, 107, 0, 0.25);
  position: relative;
  overflow: hidden;
}

.final-cta-title {
  font-size: 2.4rem;
  font-weight: 950;
  color: #ffffff;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
  position: relative;
  z-index: 2;
  text-shadow: 0 2px 8px rgba(124, 45, 18, 0.4);
}

.final-cta-desc {
  font-size: 1.15rem;
  color: #ffedd5;
  margin-bottom: 34px;
  line-height: 1.6;
  position: relative;
  z-index: 2;
}

.btn-white {
  background-color: #ffffff;
  color: var(--orange-burnt);
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.18);
  font-weight: 900;
  position: relative;
  z-index: 2;
  transition: all 0.24s ease;
}

.btn-white:hover {
  background-color: #fff7ed;
  color: var(--orange-flame);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25), 0 0 20px rgba(255, 255, 255, 0.6);
  transform: translateY(-3px);
}

/* 页脚 - 严格合规 */
.site-footer {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--orange-apricot);
  padding: 46px 0 34px;
  font-size: 0.92rem;
  color: var(--color-text-muted);
  position: relative;
  z-index: 2;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 26px;
  margin-bottom: 22px;
}

.footer-nav a {
  color: var(--color-text-muted);
  font-weight: 700;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

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

.footer-disclosure {
  text-align: center;
  font-size: 0.86rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border-light);
}

.footer-copyright {
  text-align: center;
  font-size: 0.86rem;
  color: var(--color-text-light);
}

/* 移动端吸底 CTA 栏 */
.mobile-sticky-cta {
  display: none;
}

@media (max-width: 768px) {
  .mobile-sticky-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1.5px solid var(--color-border);
    padding: 10px 18px;
    z-index: 999;
    box-shadow: 0 -4px 18px rgba(249, 115, 22, 0.12);
  }

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

  .sticky-brand {
    font-size: 0.98rem;
    font-weight: 900;
    color: var(--color-text-title);
  }

  .sticky-sub {
    font-size: 0.8rem;
    color: var(--color-text-light);
  }

  .sticky-btn {
    padding: 8px 22px;
    font-size: 0.94rem;
    min-height: 44px;
  }
}

/* 指南卡片列表 */
.guide-card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
  margin-top: 34px;
}

.guide-card {
  background: #ffffff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
  transition: all 0.25s ease;
  box-shadow: var(--shadow-sm);
}

.guide-card:hover {
  border-color: var(--color-primary-border);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.guide-card-thumb {
  width: 100%;
  height: 120px;
  background: linear-gradient(135deg, #fff7ed 0%, #ffedd5 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  color: var(--color-primary-hover);
}

.guide-card-thumb svg {
  width: 48px;
  height: 48px;
  stroke: currentColor;
  stroke-width: 1.8;
  fill: none;
}

.guide-card-title {
  font-size: 1.28rem;
  font-weight: 850;
  margin-bottom: 8px;
  line-height: 1.4;
}

.guide-card-title a {
  color: var(--color-text-title);
}

.guide-card-title a:hover {
  color: var(--color-primary);
}

.guide-card-excerpt {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  flex-grow: 1;
}

.guide-card-meta {
  font-size: 0.86rem;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--color-border-light);
}

/* 文章正文与内容页 */
.article-header {
  padding: 40px 0 24px;
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: 32px;
}

.article-breadcrumb {
  font-size: 0.88rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.article-breadcrumb a {
  color: var(--color-text-muted);
}

.article-title {
  font-size: 2.2rem;
  font-weight: 950;
  line-height: 1.3;
  color: var(--color-text-title);
  margin-bottom: 14px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.88rem;
  color: var(--color-text-light);
}

.article-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #1e293b;
}

.article-body h2 {
  font-size: 1.55rem;
  font-weight: 850;
  color: var(--color-text-title);
  margin-top: 38px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border-light);
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 750;
  color: var(--color-text-title);
  margin-top: 26px;
  margin-bottom: 12px;
}

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

.article-body ul, .article-body ol {
  margin-bottom: 22px;
  padding-left: 24px;
}

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

.article-cta-box {
  background: linear-gradient(135deg, rgba(255, 247, 237, 0.95) 0%, rgba(255, 237, 213, 0.92) 100%);
  border: 2px solid var(--orange-tangerine);
  border-radius: var(--radius-md);
  padding: 34px;
  text-align: center;
  margin: 40px 0;
  box-shadow: 0 10px 30px -5px rgba(255, 107, 0, 0.22), 0 0 20px rgba(255, 122, 0, 0.1);
  position: relative;
  overflow: hidden;
}

.article-cta-title {
  font-size: 1.38rem;
  font-weight: 900;
  color: var(--color-text-title);
  margin-bottom: 8px;
}

.article-cta-desc {
  font-size: 0.98rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.article-internal-links {
  background: var(--color-gradient-card-glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px 30px;
  margin-top: 38px;
  box-shadow: var(--shadow-sm);
}

.article-internal-title {
  font-size: 1.18rem;
  font-weight: 850;
  color: var(--color-text-title);
  margin-bottom: 12px;
}

.article-internal-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* 法律合规内容块 */
.legal-content {
  background: #ffffff;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 42px;
  margin: 36px 0;
  box-shadow: var(--shadow-sm);
}

.legal-content h2 {
  font-size: 1.4rem;
  font-weight: 850;
  color: var(--color-text-title);
  margin-top: 30px;
  margin-bottom: 12px;
}

.legal-content p {
  font-size: 0.98rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.legal-content ul {
  margin-bottom: 18px;
  padding-left: 20px;
  color: var(--color-text-muted);
}

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

/* 响应式调整 */
@media (max-width: 992px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .scenarios-grid {
    grid-template-columns: 1fr;
  }
  .ecosystem-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .guide-card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background-color: #ffffff;
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 16px 20px;
    gap: 8px;
    box-shadow: var(--shadow-md);
  }

  .site-nav.is-open {
    display: flex;
  }

  .nav-link {
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border-light);
  }

  .hero-title {
    font-size: 2.2rem;
  }
  .hero-subtitle {
    font-size: 1.05rem;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .hero-meta {
    flex-direction: column;
    gap: 10px;
  }
  .console-body {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .console-ping-box {
    width: 100%;
  }
  .ecosystem-grid {
    grid-template-columns: 1fr;
  }
  .final-cta-box {
    padding: 44px 22px;
  }
  .final-cta-title {
    font-size: 1.85rem;
  }
  .legal-content {
    padding: 24px 20px;
  }
}