/* ====================================================================
   万达云 (wandayun.vip) - 动漫灰色系 (Anime Grayscale) 视觉核心样式表
   特色：排版大去重、Bento Grid 不规则网格、非对称双栏、差异化字号与流式韵律
   动效：纯 CSS3 硬件加速，悬浮升起、呼吸荧光光晕、背景网格微动
==================================================================== */

:root {
  /* 动漫灰色系调色板 */
  --color-bg-deep: #0b0d13;
  --color-bg-surface: #121520;
  --color-bg-card: rgba(20, 24, 36, 0.78);
  --color-bg-card-hover: rgba(26, 32, 48, 0.92);
  --color-bg-alt: #10131d;
  
  --color-text-main: #f3f4f6;
  --color-text-muted: #9ca3af;
  --color-text-light: #6b7280;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(129, 140, 248, 0.45);
  
  /* 动漫科技高光霓虹 */
  --color-accent-violet: #6366f1;
  --color-accent-cyan: #38bdf8;
  --color-accent-pink: #ec4899;
  --color-success: #10b981;
  
  --gradient-anime: linear-gradient(135deg, #6366f1 0%, #38bdf8 100%);
  --gradient-btn: linear-gradient(135deg, #4f46e5 0%, #0284c7 100%);
  --gradient-btn-hover: linear-gradient(135deg, #6366f1 0%, #38bdf8 100%);
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0) 100%);

  --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4), 0 0 1px rgba(255, 255, 255, 0.1);
  --shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.6), 0 0 24px rgba(99, 102, 241, 0.25);
  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --max-width: 1160px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-bg-deep);
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg-deep);
  background-image: 
    radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(180deg, rgba(99, 102, 241, 0.04) 0%, rgba(11, 13, 19, 0) 600px);
  background-size: 32px 32px, 100% 100%;
  color: var(--color-text-main);
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

a:hover {
  color: #7dd3fc;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 3px;
}

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ====================================================================
   动效定义 (Keyframes)
==================================================================== */
@keyframes anime-glow {
  0%, 100% {
    box-shadow: 0 0 16px rgba(99, 102, 241, 0.4), 0 0 32px rgba(56, 189, 248, 0.2);
  }
  50% {
    box-shadow: 0 0 28px rgba(99, 102, 241, 0.75), 0 0 54px rgba(56, 189, 248, 0.45);
  }
}

@keyframes pulse-subtle {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.45;
    transform: scale(0.9);
  }
}

@keyframes star-twinkle {
  0%, 100% {
    opacity: 0.3;
    transform: scale(0.8);
  }
  50% {
    opacity: 1;
    transform: scale(1.2);
  }
}

@keyframes scanline {
  0% {
    transform: translateY(-100%);
  }
  100% {
    transform: translateY(1000%);
  }
}

/* ====================================================================
   头部导航 (动漫毛玻璃半透明)
==================================================================== */
.site-header {
  background-color: rgba(13, 16, 24, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  transition: border-color 0.3s ease;
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.site-logo {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-text-main);
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.01em;
  min-height: 44px;
}

.site-logo:hover {
  color: #ffffff;
}

.site-logo-icon {
  width: 32px;
  height: 32px;
  background: var(--gradient-btn);
  color: #ffffff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 800;
  box-shadow: 0 0 12px rgba(99, 102, 241, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-nav-link {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0 6px;
  position: relative;
  transition: color 0.2s ease;
}

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

.site-nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 12px;
  left: 6px;
  right: 6px;
  height: 2px;
  background: var(--gradient-anime);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--color-accent-cyan);
}

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

/* 移动端汉堡按钮 */
.menu-toggle-btn {
  display: none;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px;
  min-width: 44px;
  min-height: 44px;
  cursor: pointer;
  color: var(--color-text-main);
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.menu-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-border-hover);
}

.menu-toggle-btn svg {
  width: 24px;
  height: 24px;
}

/* ====================================================================
   基础按钮
==================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 10px 24px;
  min-height: 44px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
  line-height: 1.3;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-btn);
  color: #ffffff !important;
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
}

.btn-primary:hover {
  background: var(--gradient-btn-hover);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.55), 0 0 16px rgba(56, 189, 248, 0.4);
  transform: translateY(-2px);
}

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

.btn-primary.glow {
  animation: anime-glow 3.5s infinite ease-in-out;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-main) !important;
  border: 1px solid var(--color-border);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-border-hover);
  color: #ffffff !important;
  transform: translateY(-2px);
}

.btn-large {
  padding: 13px 32px;
  font-size: 1.05rem;
  min-height: 48px;
}

.btn-block {
  display: flex;
  width: 100%;
}

/* ====================================================================
   Hero 区域 (排版大去重：非对称双栏 + 差异字号 + 终端状态面板)
==================================================================== */
.hero-section {
  position: relative;
  padding: 68px 0 72px;
  background: radial-gradient(circle at 40% 20%, rgba(99, 102, 241, 0.16) 0%, rgba(11, 13, 19, 0) 70%);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.hero-artwork-wrap {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 1440px;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.55;
}

.hero-grid-2col {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-left-col {
  text-align: left;
}

.hero-hud-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(99, 102, 241, 0.14);
  color: #a5b4fc;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  font-family: monospace, var(--font-family);
  letter-spacing: 0.04em;
  margin-bottom: 20px;
  border: 1px solid rgba(99, 102, 241, 0.35);
  box-shadow: 0 0 14px rgba(99, 102, 241, 0.2);
}

.hero-hud-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-accent-cyan);
  box-shadow: 0 0 8px var(--color-accent-cyan);
  animation: pulse-subtle 1.8s infinite ease-in-out;
}

.hero-title-huge {
  font-size: 2.85rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #ffffff;
  margin-bottom: 20px;
  line-height: 1.18;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.6);
}

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

.hero-subtitle-lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  line-height: 1.7;
  max-width: 580px;
}

.hero-actions-left {
  display: flex;
  gap: 16px;
  margin-bottom: 34px;
  flex-wrap: wrap;
}

.hero-guarantee-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 20px;
}

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

.hero-guarantee-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-success);
  box-shadow: 0 0 6px var(--color-success);
}

/* 右侧动漫机甲状态终端面板 (Anime Cyber Terminal Card) */
.hero-terminal-card {
  background: rgba(18, 22, 34, 0.85);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6), 0 0 24px rgba(99, 102, 241, 0.2);
  backdrop-filter: blur(14px);
  position: relative;
  overflow: hidden;
}

.hero-terminal-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-anime);
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.terminal-dot.red { background: #ef4444; }
.terminal-dot.yellow { background: #f59e0b; }
.terminal-dot.green { background: #10b981; }

.terminal-badge {
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--color-accent-cyan);
  background: rgba(56, 189, 248, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.terminal-node-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.terminal-node-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

.terminal-node-item:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: rgba(99, 102, 241, 0.3);
}

.node-info-col {
  display: flex;
  align-items: center;
  gap: 8px;
}

.node-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 6px var(--color-success);
}

.node-name {
  font-weight: 600;
  color: #ffffff;
}

.node-type {
  font-size: 0.75rem;
  color: var(--color-accent-violet);
  background: rgba(99, 102, 241, 0.15);
  padding: 1px 6px;
  border-radius: 3px;
}

.node-metric {
  font-family: monospace;
  font-weight: 700;
  color: var(--color-accent-cyan);
}

.terminal-stats-footer {
  display: flex;
  justify-content: space-around;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
}

.terminal-stat-num {
  font-size: 1.15rem;
  font-weight: 800;
  color: #ffffff;
  font-family: monospace;
}

.terminal-stat-label {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-top: 2px;
}

/* ====================================================================
   通用 Section
==================================================================== */
.section {
  padding: 76px 0;
  position: relative;
}

.section-alt {
  background-color: var(--color-bg-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-header-left {
  text-align: left;
  max-width: 720px;
  margin-bottom: 44px;
}

.section-tag {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent-cyan);
  letter-spacing: 0.1em;
  font-family: monospace, var(--font-family);
  margin-bottom: 8px;
  display: block;
}

.section-title-large {
  font-size: 2.2rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.section-desc-lead {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ====================================================================
   Features: Bento Grid 不规则便当盒网格布局
==================================================================== */
.features-bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.bento-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
}

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

/* Bento 变体 1: 超大主卡 (跨 2 列) */
.bento-card.span-2 {
  grid-column: span 2;
  background: linear-gradient(135deg, rgba(28, 34, 52, 0.85) 0%, rgba(18, 22, 34, 0.8) 100%);
  border-color: rgba(99, 102, 241, 0.25);
}

.bento-card.span-2::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-anime);
}

/* Bento 变体 2: 横向通栏卡 (跨全部或 2 列) */
.bento-card.span-row {
  grid-column: span 2;
}

.bento-card.tall {
  grid-column: span 1;
}

.bento-icon-wrap {
  width: 48px;
  height: 48px;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent-cyan);
  margin-bottom: 20px;
  box-shadow: 0 0 14px rgba(99, 102, 241, 0.2);
}

.bento-icon-wrap svg {
  width: 26px;
  height: 26px;
}

.bento-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
}

.bento-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.68;
}

.bento-visual-bar {
  margin-top: 22px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-accent-cyan);
  font-family: monospace;
}

/* ====================================================================
   Compatibility: 左右非对称交错排版
==================================================================== */
.compat-split-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 40px;
  align-items: center;
}

.compat-left-intro {
  text-align: left;
}

.compat-quote-badge {
  display: inline-block;
  font-family: monospace;
  font-size: 0.8rem;
  color: var(--color-accent-pink);
  background: rgba(236, 72, 153, 0.12);
  border: 1px solid rgba(236, 72, 153, 0.3);
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 16px;
}

.compat-big-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
  line-height: 1.25;
}

.compat-right-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.compat-card-modern {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 26px;
  backdrop-filter: blur(10px);
  transition: all 0.25s ease;
}

.compat-card-modern:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateX(4px);
}

.compat-card-heading {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.compat-card-heading::before {
  content: "";
  width: 4px;
  height: 16px;
  background: var(--gradient-anime);
  border-radius: 2px;
}

.compat-card-text {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  margin-bottom: 14px;
}

.compat-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.compat-tag {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  transition: all 0.2s ease;
}

.compat-tag:hover {
  background: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.4);
  color: #ffffff;
}

/* ====================================================================
   Scenarios: 错落非对称卡片 (Staggered Rhythm)
==================================================================== */
.scenarios-staggered-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.scenario-card-offset {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  backdrop-filter: blur(10px);
}

/* 中间卡片略微下沉，形成不规则视觉节奏 */
.scenario-card-offset:nth-child(2) {
  transform: translateY(14px);
  border-color: rgba(99, 102, 241, 0.25);
}

.scenario-card-offset:hover {
  transform: translateY(-4px) !important;
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-hover);
}

.scenario-badge-label {
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--color-accent-cyan);
  margin-bottom: 12px;
}

.scenario-headline {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 6px;
}

.scenario-meta-spec {
  font-size: 0.85rem;
  color: var(--color-accent-violet);
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.scenario-body-desc {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  line-height: 1.68;
}

/* ====================================================================
   Pricing: 强弱错落高低差定价区
==================================================================== */
.pricing-asym-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: center;
}

.pricing-card-asym {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  transition: all 0.25s ease;
  backdrop-filter: blur(12px);
}

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

/* 推荐档位超大超高，极强视觉统治力 */
.pricing-card-asym.featured-elevated {
  padding: 44px 28px;
  border-color: var(--color-accent-violet);
  background: linear-gradient(180deg, rgba(32, 38, 58, 0.95) 0%, rgba(18, 22, 34, 0.9) 100%);
  box-shadow: 0 0 32px rgba(99, 102, 241, 0.3), 0 12px 36px rgba(0, 0, 0, 0.6);
  position: relative;
  z-index: 2;
}

.pricing-card-asym.featured-elevated:hover {
  box-shadow: 0 0 46px rgba(99, 102, 241, 0.5), 0 16px 48px rgba(0, 0, 0, 0.75);
}

.pricing-floating-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-anime);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 16px;
  border-radius: 9999px;
  letter-spacing: 0.05em;
  box-shadow: 0 0 16px rgba(99, 102, 241, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.3);
  white-space: nowrap;
}

.pricing-card-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 6px;
}

.pricing-target-hint {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.pricing-huge-wrap {
  margin-bottom: 24px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.pricing-currency-sign {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-accent-cyan);
}

.pricing-huge-number {
  font-size: 3rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1;
}

.pricing-card-asym.featured-elevated .pricing-huge-number {
  font-size: 3.4rem;
}

.pricing-period-unit {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.pricing-feature-list {
  list-style: none;
  margin-bottom: 30px;
  flex-grow: 1;
}

.pricing-item-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.925rem;
  color: var(--color-text-muted);
  margin-bottom: 12px;
  line-height: 1.5;
}

.pricing-check-icon {
  color: var(--color-accent-cyan);
  font-weight: 800;
}

/* ====================================================================
   FAQ: 左右分栏非对称版式 (Left/Right Split Layout)
==================================================================== */
.faq-split-grid {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 48px;
  align-items: flex-start;
}

.faq-sticky-left {
  text-align: left;
  position: sticky;
  top: 96px;
}

.faq-accordion-right {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.2s ease;
  backdrop-filter: blur(10px);
}

.faq-item[open] {
  border-color: var(--color-border-hover);
  background: var(--color-bg-card-hover);
}

.faq-question {
  font-size: 1.05rem;
  font-weight: 600;
  color: #ffffff;
  padding: 18px 24px;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
  user-select: none;
}

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

.faq-question::after {
  content: "+";
  font-size: 1.35rem;
  font-weight: 300;
  color: var(--color-accent-cyan);
  transition: transform 0.2s ease;
  line-height: 1;
}

.faq-item[open] .faq-question::after {
  content: "−";
  color: var(--color-accent-pink);
}

.faq-answer {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  padding: 0 24px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
}

/* ====================================================================
   Final CTA 模块 (横向非对称通栏)
==================================================================== */
.cta-banner-asym {
  background: radial-gradient(circle at 70% 50%, rgba(99, 102, 241, 0.2) 0%, rgba(11, 13, 19, 0) 80%);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 68px 0;
  position: relative;
}

.cta-asym-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-asym-text {
  text-align: left;
  max-width: 640px;
}

.cta-banner-title {
  font-size: 2.1rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
}

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

/* ====================================================================
   页脚 (规范：仅放导航与版权，无文章列表，含联盟披露)
==================================================================== */
.site-footer {
  background-color: var(--color-bg-surface);
  border-top: 1px solid var(--color-border);
  padding: 48px 0 32px;
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 30px;
}

.footer-brand {
  max-width: 360px;
}

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

.footer-desc {
  line-height: 1.6;
  color: var(--color-text-muted);
}

.footer-legal-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-legal-link {
  color: var(--color-text-muted);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.footer-legal-link:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-disclosure {
  color: var(--color-text-light);
  font-size: 0.825rem;
}

/* ====================================================================
   移动端吸底 CTA
==================================================================== */
.mobile-sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(18, 21, 32, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(99, 102, 241, 0.35);
  padding: 10px 16px;
  z-index: 999;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.5), 0 0 14px rgba(99, 102, 241, 0.25);
  transform: translateY(100%);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-sticky-cta.is-visible {
  transform: translateY(0);
}

.mobile-sticky-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.mobile-sticky-text {
  font-size: 0.85rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.3;
}

.mobile-sticky-sub {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ====================================================================
   文章详情页与静态内容页
==================================================================== */
.article-page-header {
  padding: 44px 0 28px;
  background: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.12) 0%, rgba(11, 13, 19, 0) 80%);
  border-bottom: 1px solid var(--color-border);
}

.breadcrumbs {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

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

.breadcrumbs a:hover {
  color: #ffffff;
}

.breadcrumbs span {
  margin: 0 6px;
  color: var(--color-text-light);
}

.article-main-title {
  font-size: 2.15rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.3;
  margin-bottom: 16px;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.article-content-layout {
  padding: 48px 0 64px;
}

.article-body {
  max-width: 820px;
  margin: 0 auto;
  background: var(--color-bg-card);
  padding: 40px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: 1.05rem;
  line-height: 1.8;
  color: #d1d5db;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
}

.article-lead {
  font-size: 1.15rem;
  line-height: 1.7;
  color: #e2e8f0;
  border-left: 4px solid var(--color-accent-violet);
  padding: 14px 18px;
  margin-bottom: 32px;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #ffffff;
  margin: 40px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
  line-height: 1.4;
}

.article-body h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: #e0e7ff;
  margin: 24px 0 12px;
  line-height: 1.4;
}

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

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

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

.article-body blockquote {
  background: rgba(255, 255, 255, 0.03);
  border-left: 4px solid var(--color-border-hover);
  padding: 14px 20px;
  margin: 24px 0;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.article-table-wrap {
  overflow-x: auto;
  margin: 24px 0;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.925rem;
}

.article-table th,
.article-table td {
  border: 1px solid var(--color-border);
  padding: 12px 14px;
  text-align: left;
}

.article-table th {
  background: rgba(255, 255, 255, 0.05);
  font-weight: 600;
  color: #ffffff;
}

.article-cta-box {
  margin: 44px 0 32px;
  padding: 30px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(56, 189, 248, 0.1) 100%);
  border: 1px solid rgba(99, 102, 241, 0.4);
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: 0 0 24px rgba(99, 102, 241, 0.15);
}

.article-cta-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
}

.article-cta-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.article-faq-section {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.article-internal-links {
  margin-top: 36px;
  padding: 22px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.article-internal-links h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: #ffffff;
}

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

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

/* 静态信息页面容器 */
.page-container {
  max-width: 820px;
  margin: 40px auto 64px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
}

.page-title {
  font-size: 2rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 8px;
}

.page-meta {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.page-content h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
  margin: 28px 0 12px;
}

.page-content p {
  margin-bottom: 16px;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.page-content ul {
  margin: 0 0 20px 20px;
  color: var(--color-text-muted);
}

.page-content li {
  margin-bottom: 6px;
}

/* 指南列表卡片 */
.guides-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.guide-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  backdrop-filter: blur(10px);
}

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

.guide-card-icon {
  width: 44px;
  height: 44px;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent-cyan);
  margin-bottom: 16px;
  box-shadow: 0 0 14px rgba(99, 102, 241, 0.2);
}

.guide-card-icon svg {
  width: 24px;
  height: 24px;
}

.guide-card-tag {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.75rem;
  font-weight: 700;
  color: #a5b4fc;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  padding: 3px 10px;
  border-radius: 9999px;
  margin-bottom: 12px;
}

.guide-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
  line-height: 1.4;
}

.guide-card-title a {
  color: #ffffff;
}

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

.guide-card-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  flex-grow: 1;
  line-height: 1.65;
}

.guide-card-meta {
  font-size: 0.8rem;
  color: var(--color-text-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
}

/* ====================================================================
   响应式断点与无障碍
==================================================================== */
@media (max-width: 980px) {
  .hero-grid-2col {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .features-bento-grid {
    grid-template-columns: 1fr;
  }
  .bento-card.span-2,
  .bento-card.span-row {
    grid-column: span 1;
  }
  .compat-split-layout {
    grid-template-columns: 1fr;
  }
  .scenarios-staggered-grid {
    grid-template-columns: 1fr;
  }
  .scenario-card-offset:nth-child(2) {
    transform: none;
  }
  .pricing-asym-grid {
    grid-template-columns: 1fr;
  }
  .pricing-card-asym.featured-elevated {
    padding: 36px 24px;
    order: -1;
  }
  .faq-split-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .faq-sticky-left {
    position: static;
  }
  .guides-list {
    grid-template-columns: 1fr;
  }
  .cta-asym-row {
    flex-direction: column;
    text-align: center;
  }
  .cta-asym-text {
    text-align: center;
  }
}

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

  .site-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background-color: rgba(18, 21, 32, 0.98);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 16px 20px;
    gap: 8px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.6);
  }

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

  .site-nav-link {
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .hero-title-huge {
    font-size: 2.1rem;
  }

  .hero-subtitle-lead {
    font-size: 1rem;
  }

  .hero-actions-left {
    flex-direction: column;
  }

  .footer-top {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-legal-nav {
    flex-direction: column;
    gap: 10px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .article-body,
  .page-container {
    padding: 24px 18px;
  }

  .article-main-title {
    font-size: 1.65rem;
  }

  .mobile-sticky-cta {
    display: block;
  }

  body {
    padding-bottom: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}