/* ==========================================================================
   WgetCloud 官方推广落地页样式表 (Fluid Multi-Cluster Blue-and-White UI)
   - Deep Marine Calm Palette:
     * Pure water-foam white (#ffffff)
     * Deep ocean trench blue (#0040c1)
     * Translucent sea-glass cyan (#38bdf8)
   - Completely devoid of generic AI sparks; Serene, reliable, hydrodynamic resilience
   - Multi-cluster fluid caustics & stress-test laser datum line
   - 昼夜模式切换支持 (默认白天模式)
   - 响应式全端自适应
   ========================================================================== */

/* ---------------- 基础变量 & 主题切换 ---------------- */
:root {
  /* 白天模式 (默认) - 深海与水沫白 */
  --bg-primary: #ffffff;
  --bg-secondary: #f4f9fd;
  --bg-tertiary: #e9f3fc;
  --bg-card: #ffffff;
  --bg-card-hover: #fcfefe;
  --bg-card-glass: rgba(255, 255, 255, 0.88);
  --bg-card-highlight: rgba(0, 64, 193, 0.04);
  
  --text-primary: #071739;
  --text-secondary: #243b61;
  --text-muted: #5c7295;
  --text-accent: #0040c1;

  --ocean-trench: #0040c1;
  --ocean-deep: #002d87;
  --ocean-dark: #001d57;
  --water-foam: #ffffff;
  --seaglass-cyan: #38bdf8;
  --seaglass-glow: rgba(56, 189, 248, 0.28);
  --water-caustics-border: rgba(56, 189, 248, 0.22);

  --border-color: rgba(186, 215, 243, 0.65);
  --border-subtle: rgba(224, 239, 253, 0.85);
  --border-focus: rgba(0, 64, 193, 0.45);

  --primary-color: #0040c1;
  --primary-hover: #003199;
  --primary-gradient: linear-gradient(135deg, #0040c1 0%, #0284c7 55%, #38bdf8 100%);
  --marine-gradient: linear-gradient(180deg, #f0f7fe 0%, #ffffff 100%);
  --card-trench-gradient: linear-gradient(145deg, #ffffff 0%, #f3f8fd 100%);
  
  --badge-bg: rgba(0, 64, 193, 0.08);
  --badge-color: #0040c1;
  --badge-border: rgba(56, 189, 248, 0.35);

  --tag-green-bg: rgba(16, 185, 129, 0.1);
  --tag-green-color: #047857;
  --tag-cyan-bg: rgba(56, 189, 248, 0.12);
  --tag-cyan-color: #0284c7;

  --nav-bg: rgba(255, 255, 255, 0.88);
  --nav-border: rgba(186, 215, 243, 0.65);

  --shadow-sm: 0 2px 10px rgba(0, 64, 193, 0.04);
  --shadow-md: 0 12px 32px -8px rgba(0, 64, 193, 0.09);
  --shadow-lg: 0 22px 48px -12px rgba(0, 64, 193, 0.14);
  --shadow-glow: 0 0 30px rgba(56, 189, 248, 0.35);
  --shadow-laser: 0 0 18px rgba(56, 189, 248, 0.85);

  --hero-glow: radial-gradient(circle at 50% 0%, rgba(56, 189, 248, 0.18) 0%, rgba(0, 64, 193, 0.08) 50%, transparent 75%);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition-speed: 0.3s;
}

[data-theme="dark"] {
  /* 黑夜模式 - 深海潜渊 (Ocean Trench Abyssal) */
  --bg-primary: #040a17;
  --bg-secondary: #081326;
  --bg-tertiary: #0c1b35;
  --bg-card: rgba(12, 27, 53, 0.65);
  --bg-card-hover: rgba(16, 35, 68, 0.85);
  --bg-card-glass: rgba(8, 19, 38, 0.82);
  --bg-card-highlight: rgba(56, 189, 248, 0.08);

  --text-primary: #f0f7ff;
  --text-secondary: #bcd4f2;
  --text-muted: #7393bd;
  --text-accent: #38bdf8;

  --border-color: rgba(56, 189, 248, 0.16);
  --border-subtle: rgba(56, 189, 248, 0.08);
  --border-focus: rgba(56, 189, 248, 0.55);

  --primary-color: #38bdf8;
  --primary-hover: #7dd3fc;
  --primary-gradient: linear-gradient(135deg, #0040c1 0%, #0284c7 45%, #38bdf8 100%);
  --marine-gradient: linear-gradient(180deg, #081326 0%, #040a17 100%);
  --card-trench-gradient: linear-gradient(145deg, rgba(14, 30, 58, 0.7) 0%, rgba(8, 19, 38, 0.9) 100%);

  --badge-bg: rgba(56, 189, 248, 0.15);
  --badge-color: #7dd3fc;
  --badge-border: rgba(56, 189, 248, 0.32);

  --tag-green-bg: rgba(16, 185, 129, 0.18);
  --tag-green-color: #34d399;
  --tag-cyan-bg: rgba(56, 189, 248, 0.2);
  --tag-cyan-color: #38bdf8;

  --nav-bg: rgba(4, 10, 23, 0.88);
  --nav-border: rgba(56, 189, 248, 0.14);

  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 12px 32px -8px rgba(0, 0, 0, 0.75);
  --shadow-lg: 0 22px 48px -12px rgba(0, 0, 0, 0.9);
  --shadow-glow: 0 0 35px rgba(56, 189, 248, 0.3);
  --shadow-laser: 0 0 22px rgba(56, 189, 248, 0.95);

  --hero-glow: radial-gradient(circle at 50% 0%, rgba(0, 64, 193, 0.32) 0%, rgba(56, 189, 248, 0.14) 50%, transparent 75%);
}

/* ---------------- 基础重置 ---------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  min-height: 100vh;
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
  overflow-x: hidden;
}

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

img, svg {
  vertical-align: middle;
  max-width: 100%;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ---------------- 页面容器与网格 ---------------- */
.container {
  width: 100%;
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
  position: relative;
}

.section-alt {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 56px auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 15px;
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--badge-color);
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  border-radius: var(--radius-full);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.35rem;
  font-weight: 850;
  letter-spacing: -0.025em;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--text-primary);
}

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

/* ---------------- 顶部导航栏 ---------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--nav-border);
  transition: background-color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.38rem;
  font-weight: 850;
  color: var(--text-primary);
  letter-spacing: -0.025em;
  text-decoration: none;
}

.site-logo {
  height: 38px;
  width: auto;
  display: block;
  object-fit: contain;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.brand-logo:hover .site-logo {
  transform: translateY(-1px);
}

.logo-mode-dark {
  display: none;
}

.logo-mode-light {
  display: block;
}

[data-theme="dark"] .logo-mode-light {
  display: none;
}

[data-theme="dark"] .logo-mode-dark {
  display: block;
}

.brand-icon::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: rotate(30deg);
}

.brand-icon svg {
  width: 20px;
  height: 20px;
  stroke: #ffffff;
  fill: none;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-link {
  font-size: 0.94rem;
  font-weight: 550;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 4px;
  transition: color 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--ocean-trench);
}

[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link.active {
  color: var(--seaglass-cyan);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary-gradient);
  transition: width 0.25s ease;
  border-radius: 2px;
}

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

/* 推荐资讯特别高亮标签 */
.nav-link-badge {
  font-size: 0.7rem;
  padding: 2px 6px;
  background: var(--tag-cyan-bg);
  color: var(--tag-cyan-color);
  border-radius: var(--radius-full);
  margin-left: 4px;
  font-weight: 700;
  vertical-align: middle;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* ---------------- 昼夜模式切换按钮 (精致水玻半透明) ---------------- */
.theme-toggle-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-speed) ease;
  position: relative;
  overflow: hidden;
}

.theme-toggle-btn:hover {
  background: rgba(56, 189, 248, 0.18);
  color: var(--ocean-trench);
  border-color: var(--border-focus);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(56, 189, 248, 0.25);
}

[data-theme="dark"] .theme-toggle-btn:hover {
  color: var(--seaglass-cyan);
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  stroke-width: 1.8;
}

.theme-icon-sun {
  display: block;
}

.theme-icon-moon {
  display: none;
}

[data-theme="dark"] .theme-icon-sun {
  display: none;
}

[data-theme="dark"] .theme-icon-moon {
  display: block;
}

/* ---------------- 统一 CTA 按钮规范 ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 650;
  border-radius: var(--radius-full);
  transition: all 0.25s ease;
  white-space: nowrap;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff !important;
  box-shadow: 0 4px 16px rgba(0, 64, 193, 0.32);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 64, 193, 0.42);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-lg {
  padding: 14px 34px;
  font-size: 1.05rem;
  height: 52px;
}

.btn-block {
  width: 100%;
}

.btn-icon svg {
  width: 18px;
  height: 18px;
  transition: transform 0.2s ease;
}

.btn:hover .btn-icon svg {
  transform: translateX(3px);
}

/* ---------------- 移动端菜单切换按钮 ---------------- */
.mobile-nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

.mobile-nav-toggle svg {
  width: 24px;
  height: 24px;
}

/* ---------------- 主视觉 Hero 区域 (Fluid Cluster Layout) ---------------- */
.hero-section {
  position: relative;
  padding: 150px 0 84px 0;
  text-align: center;
  overflow: hidden;
}

/* 水纹焦散流体背景画布 */
.hero-caustics-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.65;
}

.hero-glow-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 600px;
  background: var(--hero-glow);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1140px;
  margin: 0 auto;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 18px;
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 650;
  color: var(--badge-color);
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.hero-pill-pulse {
  width: 8px;
  height: 8px;
  background: #38bdf8;
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.35);
  animation: marinePulse 2.4s infinite ease-in-out;
}

@keyframes marinePulse {
  0% { box-shadow: 0 0 0 0 rgba(56, 189, 248, 0.6); }
  70% { box-shadow: 0 0 0 10px rgba(56, 189, 248, 0); }
  100% { box-shadow: 0 0 0 0 rgba(56, 189, 248, 0); }
}

.hero-title {
  font-size: clamp(1.15rem, 3.4vw, 2.75rem);
  font-weight: 850;
  line-height: 1.25;
  letter-spacing: -0.025em;
  margin-bottom: 20px;
  color: var(--text-primary);
  white-space: nowrap; /* 绝对不换行，单行完整展示 */
  text-align: center;
}

.hero-brand-highlight {
  color: var(--ocean-trench);
}

[data-theme="dark"] .hero-brand-highlight {
  color: var(--seaglass-cyan);
}

.hero-gradient-text {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

/* 简介文字段落 */
.hero-desc {
  font-size: 1.12rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 740px;
  margin: 0 auto 36px auto;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 44px;
  flex-wrap: wrap;
}

.hero-trust-badges {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px dashed var(--border-color);
}

.trust-badge-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 550;
}

.trust-badge-item svg {
  width: 18px;
  height: 18px;
  color: var(--seaglass-cyan);
}

/* ---------------- 晚高峰抗压实测交互组件 (Peak Hours Stress-Test) ---------------- */
.stress-test-box {
  margin: 48px auto 0 auto;
  max-width: 920px;
  background: var(--bg-card);
  border: 1px solid var(--water-caustics-border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  text-align: left;
}

.stress-test-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 16px;
}

.stress-test-title-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.stress-pulse-orb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #f59e0b;
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.5);
  transition: background 0.4s ease, box-shadow 0.4s ease;
}

.stress-test-box.active .stress-pulse-orb {
  background: #38bdf8;
  box-shadow: 0 0 14px rgba(56, 189, 248, 0.9);
}

.stress-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
}

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

/* 交互开关按钮 */
.stress-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  user-select: none;
}

.stress-toggle-btn:hover {
  border-color: var(--seaglass-cyan);
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.2);
}

.stress-toggle-switch {
  width: 36px;
  height: 20px;
  background: #cbd5e1;
  border-radius: 20px;
  position: relative;
  transition: background 0.3s ease;
}

.stress-toggle-knob {
  width: 16px;
  height: 16px;
  background: #ffffff;
  border-radius: 50%;
  position: absolute;
  top: 2px;
  left: 2px;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.stress-test-box.active .stress-toggle-switch {
  background: var(--ocean-trench);
}

[data-theme="dark"] .stress-test-box.active .stress-toggle-switch {
  background: var(--seaglass-cyan);
}

.stress-test-box.active .stress-toggle-knob {
  transform: translateX(16px);
}

/* 示波器视口与激光平准线 */
.stress-waveform-stage {
  height: 110px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.waveform-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* 激光基准线发光指示 */
.laser-datum-indicator {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, #38bdf8 15%, #ffffff 50%, #38bdf8 85%, transparent);
  box-shadow: var(--shadow-laser);
  opacity: 0;
  transform: translateY(-50%) scaleY(0.5);
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1), transform 0.5s ease;
  pointer-events: none;
}

.stress-test-box.active .laser-datum-indicator {
  opacity: 1;
  transform: translateY(-50%) scaleY(1);
}

/* 状态指标条 */
.stress-metrics-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 18px;
}

.stress-metric-item {
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-subtle);
}

.stress-metric-label {
  font-size: 0.76rem;
  color: var(--text-muted);
  font-weight: 550;
}

.stress-metric-value {
  font-size: 1.1rem;
  font-weight: 850;
  color: var(--ocean-trench);
  letter-spacing: -0.02em;
}

[data-theme="dark"] .stress-metric-value {
  color: var(--seaglass-cyan);
}

/* ---------------- 核心优势 3 个图文卡片 (折射与海波流体质感) ---------------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--card-trench-gradient);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 38px 30px;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* 卡片边缘光学水波微折射效果 */
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--seaglass-cyan), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--seaglass-cyan);
  box-shadow: var(--shadow-md), 0 0 20px rgba(56, 189, 248, 0.15);
}

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

.feature-icon-wrapper {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  background: rgba(0, 64, 193, 0.08);
  color: var(--ocean-trench);
  border: 1px solid rgba(56, 189, 248, 0.2);
}

[data-theme="dark"] .feature-icon-wrapper {
  background: rgba(56, 189, 248, 0.12);
  color: var(--seaglass-cyan);
}

.feature-icon-wrapper svg {
  width: 28px;
  height: 28px;
}

.feature-card-title {
  font-size: 1.35rem;
  font-weight: 750;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-card-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 22px;
}

.feature-card-list {
  margin-top: auto;
  border-top: 1px solid var(--border-subtle);
  padding-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feature-card-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.feature-card-list li svg {
  width: 15px;
  height: 15px;
  color: var(--tag-green-color);
  flex-shrink: 0;
}

/* ---------------- 流媒体 & AI 支持双卡片展示 ---------------- */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.showcase-card {
  background: var(--card-trench-gradient);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  transition: all 0.35s ease;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.showcase-card:hover {
  border-color: var(--seaglass-cyan);
  box-shadow: var(--shadow-md), 0 0 24px rgba(56, 189, 248, 0.18);
  transform: translateY(-4px);
}

.showcase-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 20px;
}

.showcase-badge {
  font-size: 0.8rem;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: var(--radius-full);
}

.showcase-badge.badge-green {
  background: var(--tag-green-bg);
  color: var(--tag-green-color);
}

.showcase-badge.badge-cyan {
  background: var(--tag-cyan-bg);
  color: var(--tag-cyan-color);
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.showcase-title {
  font-size: 1.48rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.showcase-desc {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 26px;
}

.service-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.service-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.service-pill .pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--seaglass-cyan);
}

.metric-row {
  margin-top: auto;
  padding: 16px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  text-align: center;
}

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

.metric-val {
  font-size: 1.15rem;
  font-weight: 850;
  color: var(--ocean-trench);
}

[data-theme="dark"] .metric-val {
  color: var(--seaglass-cyan);
}

.metric-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ---------------- 套餐价格对比表 (真实 WgetCloud 价格) ---------------- */
/* 计费周期切换开关 (月付 / 季付 / 年付) */
.pricing-cycle-tabs {
  display: inline-flex;
  align-items: center;
  background: var(--bg-secondary);
  padding: 5px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  margin: 0 auto 40px auto;
  box-shadow: var(--shadow-sm);
}

.pricing-cycle-btn {
  padding: 8px 22px;
  border-radius: var(--radius-full);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-secondary);
  transition: all 0.25s ease;
  position: relative;
}

.pricing-cycle-btn.active {
  background: var(--primary-gradient);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 64, 193, 0.3);
}

.pricing-cycle-badge {
  font-size: 0.7rem;
  padding: 2px 6px;
  background: #f59e0b;
  color: #ffffff;
  border-radius: var(--radius-full);
  margin-left: 4px;
  font-weight: 700;
}

/* 85 折新人特惠横幅提示 */
.pricing-promo-notice {
  text-align: center;
  margin-bottom: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.pricing-promo-badge {
  background: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%);
  color: #ffffff;
  font-weight: 750;
  font-size: 0.8rem;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.35s ease;
  box-shadow: var(--shadow-sm);
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--seaglass-cyan);
}

/* 热门推荐卡片 */
.pricing-card.featured {
  background: var(--bg-card);
  border: 2px solid var(--ocean-trench);
  box-shadow: var(--shadow-glow);
  transform: scale(1.03);
  z-index: 2;
}

[data-theme="dark"] .pricing-card.featured {
  border-color: var(--seaglass-cyan);
}

.pricing-card.featured:hover {
  transform: scale(1.03) translateY(-6px);
}

.popular-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-gradient);
  color: #ffffff;
  padding: 4px 20px;
  font-size: 0.78rem;
  font-weight: 750;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  box-shadow: 0 4px 14px rgba(0, 64, 193, 0.4);
}

.pricing-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.pricing-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  min-height: 40px;
  margin-bottom: 20px;
}

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

.price-currency {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
}

.price-amount {
  font-size: 2.8rem;
  font-weight: 850;
  letter-spacing: -0.03em;
  color: var(--ocean-trench);
  line-height: 1;
}

[data-theme="dark"] .price-amount {
  color: var(--seaglass-cyan);
}

.price-period {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 550;
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 32px;
  flex-grow: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.pricing-features li svg {
  width: 17px;
  height: 17px;
  color: var(--tag-green-color);
  flex-shrink: 0;
}

.pricing-cta-wrap {
  margin-top: auto;
}

/* ---------------- 用户真实评价 ---------------- */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--card-trench-gradient);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.review-card:hover {
  transform: translateY(-4px);
  border-color: var(--seaglass-cyan);
  box-shadow: var(--shadow-md);
}

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

.review-stars svg {
  width: 17px;
  height: 17px;
  fill: currentColor;
}

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

.review-user {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-gradient);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 750;
  font-size: 0.95rem;
  box-shadow: 0 4px 10px rgba(0, 64, 193, 0.25);
}

.review-user-info {
  display: flex;
  flex-direction: column;
}

.review-name {
  font-size: 0.92rem;
  font-weight: 750;
  color: var(--text-primary);
}

.review-role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---------------- FAQ 常见问题解答 ---------------- */
.faq-container {
  max-width: 820px;
  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 0.25s ease;
}

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

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

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

.faq-arrow {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform 0.25s ease;
  flex-shrink: 0;
  margin-left: 12px;
}

details[open] .faq-arrow {
  transform: rotate(180deg);
  color: var(--ocean-trench);
}

[data-theme="dark"] details[open] .faq-arrow {
  color: var(--seaglass-cyan);
}

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

.faq-answer p + p {
  margin-top: 10px;
}

/* ---------------- 底部转换横幅 (Bottom CTA) ---------------- */
.bottom-cta-box {
  background: var(--primary-gradient);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  color: #ffffff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-top: 40px;
}

.bottom-cta-title {
  font-size: 2.2rem;
  font-weight: 850;
  margin-bottom: 14px;
  color: #ffffff;
}

.bottom-cta-desc {
  font-size: 1.1rem;
  opacity: 0.92;
  max-width: 620px;
  margin: 0 auto 30px auto;
  line-height: 1.65;
}

.bottom-cta-box .btn-white {
  background: #ffffff;
  color: #0040c1 !important;
  font-weight: 750;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.bottom-cta-box .btn-white:hover {
  background: #f8fafc;
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.28);
}

/* ---------------- 页脚 (严格只保留四个标题，在新页面打开) ---------------- */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 60px 0 36px 0;
  transition: background-color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 36px;
}

.footer-nav-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  width: 100%;
  max-width: 920px;
  text-align: center;
}

.footer-link-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  transition: all 0.25s ease;
  box-shadow: var(--shadow-sm);
}

.footer-link-card:hover {
  transform: translateY(-3px);
  border-color: var(--seaglass-cyan);
  box-shadow: var(--shadow-md), 0 0 16px rgba(56, 189, 248, 0.2);
}

.footer-link-icon {
  width: 28px;
  height: 28px;
  color: var(--ocean-trench);
}

[data-theme="dark"] .footer-link-icon {
  color: var(--seaglass-cyan);
}

.footer-link-title {
  font-size: 1.05rem;
  font-weight: 750;
  color: var(--text-primary);
  transition: color 0.2s ease;
}

.footer-link-card:hover .footer-link-title {
  color: var(--ocean-trench);
}

[data-theme="dark"] .footer-link-card:hover .footer-link-title {
  color: var(--seaglass-cyan);
}

.footer-link-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-brand-meta {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ---------------- 资讯与内页专用样式 ---------------- */
.article-page {
  padding-top: 120px;
  padding-bottom: 80px;
  max-width: 880px;
  margin: 0 auto;
}

.article-header {
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.article-header .back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--ocean-trench);
  margin-bottom: 16px;
  font-weight: 650;
}

[data-theme="dark"] .article-header .back-link {
  color: var(--seaglass-cyan);
}

.article-header .back-link:hover {
  text-decoration: underline;
}

.article-title {
  font-size: 2.35rem;
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.25;
}

.article-meta {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.article-body {
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.article-body h2 {
  font-size: 1.48rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 38px 0 16px 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-body h3 {
  font-size: 1.2rem;
  font-weight: 750;
  color: var(--text-primary);
  margin: 24px 0 12px 0;
}

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

.article-body ul {
  list-style: disc;
  margin-left: 24px;
  margin-bottom: 22px;
}

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

.article-callout {
  padding: 20px 24px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border-left: 4px solid var(--ocean-trench);
  border-top: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin: 24px 0;
}

[data-theme="dark"] .article-callout {
  border-left-color: var(--seaglass-cyan);
}

.article-callout.warning {
  border-left-color: #f59e0b;
}

.article-callout.danger {
  border-left-color: #ef4444;
}

/* 资讯列表卡片 */
.news-cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 32px;
}

.news-card-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.news-card-item:hover {
  transform: translateY(-3px);
  border-color: var(--seaglass-cyan);
  box-shadow: var(--shadow-md);
}

.news-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.news-tag {
  background: var(--tag-cyan-bg);
  color: var(--tag-cyan-color);
  padding: 3px 8px;
  border-radius: 4px;
  font-weight: 700;
}

.news-card-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
}

.news-card-summary {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* 网站地图网格 */
.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.sitemap-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
}

.sitemap-card h3 {
  margin-top: 0;
  font-size: 1.15rem;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
}

.sitemap-card ul {
  list-style: none;
  margin-left: 0;
  margin-bottom: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sitemap-card ul li a {
  color: var(--ocean-trench);
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

[data-theme="dark"] .sitemap-card ul li a {
  color: var(--seaglass-cyan);
}

.sitemap-card ul li a:hover {
  text-decoration: underline;
}

/* ---------------- 深度科普 SEO 文章专属结构组件 ---------------- */
/* 面包屑导航 */
.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.article-breadcrumb a {
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

.article-breadcrumb a:hover {
  color: var(--ocean-trench);
  text-decoration: underline;
}

[data-theme="dark"] .article-breadcrumb a:hover {
  color: var(--seaglass-cyan);
}

.article-breadcrumb .separator {
  color: var(--text-muted);
  opacity: 0.6;
}

/* 文章目录 (TOC - Table of Contents) */
.article-toc {
  background: var(--bg-card);
  border: 1px solid var(--water-caustics-border);
  border-left: 4px solid var(--ocean-trench);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin: 32px 0 40px 0;
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .article-toc {
  border-left-color: var(--seaglass-cyan);
}

.article-toc-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-toc-list {
  list-style: none !important;
  margin-left: 0 !important;
  margin-bottom: 0 !important;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.article-toc-list li {
  margin-bottom: 0 !important;
}

.article-toc-list a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.article-toc-list a:hover {
  color: var(--ocean-trench);
  transform: translateX(4px);
}

[data-theme="dark"] .article-toc-list a:hover {
  color: var(--seaglass-cyan);
}

.article-toc-sublist {
  list-style: none !important;
  margin-left: 20px !important;
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* 核心观点/导读摘要框 */
.article-lead {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  padding: 20px 24px;
  border-radius: var(--radius-md);
  border: 1px dashed var(--border-color);
  margin-bottom: 32px;
}

/* 深度对比表格 */
.article-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 28px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
  background: var(--bg-card);
}

.article-table th {
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-weight: 750;
  padding: 14px 18px;
  border-bottom: 2px solid var(--border-color);
  white-space: nowrap;
}

.article-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  line-height: 1.6;
}

.article-table tr:hover td {
  background: var(--bg-card-hover);
}

.article-table .badge-highlight {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.78rem;
  font-weight: 700;
  background: var(--tag-green-bg);
  color: var(--tag-green-color);
}

/* 代码或配置命令块 */
.code-block-box {
  background: #0f172a;
  color: #f8fafc;
  border-radius: var(--radius-md);
  padding: 18px 22px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.9rem;
  line-height: 1.65;
  overflow-x: auto;
  margin: 20px 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* 文章内置 FAQ 折叠卡片 */
.article-faq-box {
  margin: 44px 0 36px 0;
  padding: 32px;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
}

.article-faq-title {
  font-size: 1.35rem;
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

.article-faq-item summary {
  padding: 16px 20px;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.article-faq-item .faq-ans {
  padding: 0 20px 18px 20px;
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 相关阅读区域 */
.related-reading-box {
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid var(--border-color);
}

.related-reading-title {
  font-size: 1.35rem;
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.related-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 10px;
  transition: all 0.25s ease;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.related-card:hover {
  transform: translateY(-3px);
  border-color: var(--seaglass-cyan);
  box-shadow: var(--shadow-md);
}

.related-card-title {
  font-size: 1.05rem;
  font-weight: 750;
  color: var(--text-primary);
  line-height: 1.5;
  transition: color 0.2s ease;
}

.related-card:hover .related-card-title {
  color: var(--ocean-trench);
}

[data-theme="dark"] .related-card:hover .related-card-title {
  color: var(--seaglass-cyan);
}

.related-card-tag {
  font-size: 0.78rem;
  color: var(--tag-cyan-color);
  font-weight: 700;
}

/* 文中专属高转化 CTA 条 */
.article-inline-cta {
  background: var(--primary-gradient);
  color: #ffffff;
  padding: 30px;
  border-radius: var(--radius-md);
  margin: 40px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-md);
}

.article-inline-cta-text h4 {
  font-size: 1.3rem;
  font-weight: 850;
  margin-bottom: 6px;
  color: #ffffff;
}

.article-inline-cta-text p {
  font-size: 0.95rem;
  opacity: 0.92;
  margin-bottom: 0;
  color: #ffffff;
}

.article-inline-cta .btn-white {
  background: #ffffff;
  color: #0040c1 !important;
  font-weight: 750;
  white-space: nowrap;
}

/* ---------------- 移动端响应式 (@media) ---------------- */
@media (max-width: 1024px) {
  .features-grid,
  .pricing-grid,
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pricing-card.featured {
    transform: none;
  }
  
  .pricing-card.featured:hover {
    transform: translateY(-6px);
  }

  .footer-nav-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stress-metrics-bar {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }

  .hero-section {
    padding: 120px 0 60px 0;
  }

  .hero-title {
    font-size: clamp(0.92rem, 4.3vw, 1.8rem);
    white-space: nowrap; /* 手机端同样保持单行不分行 */
  }

  .hero-subtitle {
    font-size: 1.15rem;
  }

  .hero-desc {
    font-size: 1.02rem;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta-group .btn {
    width: 100%;
    height: 48px;
  }

  .nav-menu {
    display: none;
  }

  .nav-menu.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    background: var(--nav-bg);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--nav-border);
    padding: 20px 24px;
    gap: 16px;
    box-shadow: var(--shadow-md);
  }

  .mobile-nav-toggle {
    display: flex;
  }

  .features-grid,
  .showcase-grid,
  .pricing-grid,
  .reviews-grid,
  .sitemap-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer-nav-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

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

  .metric-row {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .stress-test-box {
    padding: 20px 16px;
  }

  .stress-metrics-bar {
    grid-template-columns: 1fr 1fr;
  }

  .pricing-cycle-tabs {
    width: 100%;
    display: flex;
    justify-content: space-around;
  }

  .pricing-cycle-btn {
    padding: 8px 12px;
    font-size: 0.85rem;
  }

  .bottom-cta-box {
    padding: 40px 20px;
  }

  .bottom-cta-title {
    font-size: 1.7rem;
  }
  
  .btn-lg {
    width: 100%;
  }
}