/* ===================================================================
   Now加速 (nowjiasu.shop) - 瑞士网格国际主义风格 (Swiss Style)
   Swiss International Typographic Style · Architecture & Precision
   零外部依赖 | 纯原生极速 | 强对比排版 | 模块化网格 | 全端自适应
   =================================================================== */

:root {
  /* 瑞士国际主义经典色彩体系：高对比极黑、纯白与国际红 */
  --bg-main: #08080a;
  --bg-surface: #0e0e11;
  --bg-card: #121216;
  --bg-card-hover: #18181e;
  --bg-card-elevated: #15151a;
  
  /* 瑞士红主色 (Swiss Red / International Safety Red) */
  --swiss-red: #ff3333;
  --swiss-red-hover: #e02424;
  --swiss-red-light: rgba(255, 51, 51, 0.12);
  --swiss-red-border: rgba(255, 51, 51, 0.4);

  /* 辅助状态色与冷灰 */
  --accent-cyan: #38bdf8;
  --accent-green: #22c55e;
  --accent-purple: #a855f7;
  --primary: var(--swiss-red);
  --primary-hover: var(--swiss-red-hover);

  /* 文字分级 */
  --text-main: #ffffff;
  --text-sub: #e4e4e7;
  --text-muted: #a1a1aa;
  --text-dark: #71717a;

  /* 严谨精密网格边框 */
  --border-color: rgba(255, 255, 255, 0.12);
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.22);
  --border-red: rgba(255, 51, 51, 0.5);

  /* 瑞士字体层级 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", monospace;

  /* 瑞士设计圆角：极其克制克敛，强调纯几何刚性 */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-full: 9999px;

  /* 布局与动画 */
  --container-width: 1240px;
  --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --grid-line-color: rgba(255, 255, 255, 0.04);
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  width: 100%;
}

body {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  background-color: var(--bg-main);
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
}

/* 瑞士国际主义背景：精密几何工程网格底纹 */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  pointer-events: none;
  background-image: 
    linear-gradient(to right, var(--grid-line-color) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line-color) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: center top;
}

/* 微妙的暗光聚焦区，增强纵深感 */
body::after {
  content: "";
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1200px;
  max-width: 100vw;
  height: 600px;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(255, 51, 51, 0.08) 0%, transparent 80%);
}

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

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

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

/* 瑞士设计标准排版标签与微标识 (Mono Badges) */
.swiss-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--swiss-red);
  font-weight: 700;
  background: rgba(255, 51, 51, 0.08);
  border: 1px solid var(--border-red);
  padding: 4px 10px;
  border-radius: var(--radius-xs);
}

.swiss-tag-subtle {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  padding: 3px 8px;
  border-radius: var(--radius-xs);
}

/* 瑞士标准按钮体系 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
  padding: 11px 22px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  position: relative;
}

/* 主按钮：纯正瑞士红，纯几何切角 */
.btn-primary {
  background-color: var(--swiss-red);
  color: #ffffff;
  border: 1px solid var(--swiss-red);
  box-shadow: 0 0 20px rgba(255, 51, 51, 0.28);
}

.btn-primary:hover {
  background-color: var(--swiss-red-hover);
  border-color: var(--swiss-red-hover);
  box-shadow: 0 0 28px rgba(255, 51, 51, 0.45);
  transform: translateY(-2px);
}

/* 次按钮：冷白边框，硬核极简 */
.btn-secondary {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.4);
  color: #ffffff;
  transform: translateY(-2px);
}

/* 纯白高光按钮 */
.btn-white {
  background: #ffffff;
  color: #08080a;
  border: 1px solid #ffffff;
  font-weight: 800;
}

.btn-white:hover {
  background: #f4f4f5;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 255, 255, 0.2);
}

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

/* 导航栏 (Navbar) - 严谨网格结构 */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(8, 8, 10, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  height: 72px;
  display: flex;
  align-items: center;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

/* 品牌 Logo - 瑞士几何红方块 */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-symbol {
  width: 32px;
  height: 32px;
  background: var(--swiss-red);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xs);
  color: #ffffff;
  font-family: var(--font-mono);
  font-weight: 900;
  font-size: 1rem;
  letter-spacing: -0.05em;
  box-shadow: 0 0 16px rgba(255, 51, 51, 0.4);
}

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

.brand-title {
  font-family: var(--font-sans);
  font-size: 1.22rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: #ffffff;
  line-height: 1.1;
}

.brand-title span {
  color: var(--swiss-red);
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* 导航链接 */
.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 4px;
}

.nav-links a {
  padding: 8px 14px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-xs);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.05);
}

.nav-links a.nav-featured {
  color: var(--swiss-red);
  font-weight: 700;
}

.nav-links a.nav-featured:hover {
  background: rgba(255, 51, 51, 0.1);
}

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

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-color);
  color: #ffffff;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* ===================================================================
   首屏横幅区 (Hero Section) - 瑞士网格核心力量呈现
   =================================================================== */
.hero-section {
  padding-top: 136px;
  padding-bottom: 70px;
  position: relative;
  border-bottom: 1px solid var(--border-color);
}

/* 顶部状态监控微条 */
.hero-telemetry-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  background: rgba(18, 18, 22, 0.85);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  margin-bottom: 24px;
}

.status-dot-pulse {
  width: 8px;
  height: 8px;
  background-color: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-green);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 7px rgba(34, 197, 94, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.telemetry-text {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  color: var(--text-sub);
}

.telemetry-code {
  color: var(--swiss-red);
  font-weight: 700;
}

/* 主标题 H1 - 巨幅瑞士排版 */
.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 4.4rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.08;
  color: #ffffff;
  margin-bottom: 20px;
  max-width: 980px;
}

.hero-title .highlight-red {
  color: var(--swiss-red);
  position: relative;
  display: inline-block;
}

.hero-desc {
  font-size: clamp(1.05rem, 1.8vw, 1.2rem);
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 840px;
  margin-bottom: 32px;
  font-weight: 400;
}

.hero-cta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}

/* 7折特别优惠横条 */
.hero-offer-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  background: rgba(255, 51, 51, 0.06);
  border-left: 3px solid var(--swiss-red);
  border-top: 1px solid var(--border-subtle);
  border-right: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
  margin-bottom: 48px;
  max-width: 760px;
}

.hero-offer-bar span {
  font-size: 0.88rem;
  color: var(--text-sub);
}

.hero-offer-bar strong {
  color: #ffffff;
}

/* 瑞士四列遥测统计网格 (4-Column Telemetry Grid) */
.hero-telemetry-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  border-radius: var(--radius-xs);
  overflow: hidden;
}

.telemetry-cell {
  padding: 24px 20px;
  border-right: 1px solid var(--border-color);
  position: relative;
  transition: var(--transition);
}

.telemetry-cell:last-child {
  border-right: none;
}

.telemetry-cell:hover {
  background: rgba(255, 255, 255, 0.02);
}

.telemetry-index {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--swiss-red);
  margin-bottom: 8px;
}

.telemetry-val {
  font-family: var(--font-sans);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  color: #ffffff;
  line-height: 1;
  margin-bottom: 8px;
}

.telemetry-val span {
  color: var(--swiss-red);
  font-size: 0.55em;
  margin-left: 2px;
}

.telemetry-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ===================================================================
   通用分段结构 (Section Header)
   =================================================================== */
.section {
  padding: 88px 0;
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  margin-bottom: 48px;
}

.section-index {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--swiss-red);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-index::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--swiss-red);
}

.section-title {
  font-size: clamp(1.75rem, 3.2vw, 2.6rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: #ffffff;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 720px;
  line-height: 1.6;
}

/* ===================================================================
   核心优势模块化网格 (Features Section)
   =================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 32px 28px;
  border-radius: var(--radius-xs);
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
}

.feature-box:hover {
  border-color: rgba(255, 255, 255, 0.3);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.feature-index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--text-dark);
  margin-bottom: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.feature-icon {
  width: 44px;
  height: 44px;
  background: rgba(255, 51, 51, 0.08);
  border: 1px solid var(--border-red);
  color: var(--swiss-red);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xs);
  margin-bottom: 24px;
}

.feature-icon svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.feature-box h3 {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #ffffff;
  margin-bottom: 12px;
}

.feature-box p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
  flex-grow: 1;
}

.feature-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-sub);
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ===================================================================
   流媒体与 AI 解锁矩阵 (Streaming & AI Matrix)
   =================================================================== */
.matrix-container {
  margin-top: 40px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  padding: 36px;
}

.matrix-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: 16px;
}

.matrix-header h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 6px;
}

.matrix-header p {
  font-size: 0.92rem;
  color: var(--text-muted);
}

.matrix-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}

.matrix-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 20px 16px;
  border-radius: var(--radius-xs);
  text-align: center;
  transition: var(--transition);
}

.matrix-item:hover {
  border-color: var(--swiss-red);
  transform: translateY(-2px);
  background: var(--bg-card-hover);
}

.matrix-item-icon {
  font-size: 1.8rem;
  margin-bottom: 10px;
}

.matrix-item-name {
  font-weight: 700;
  font-size: 0.92rem;
  color: #ffffff;
  margin-bottom: 4px;
}

.matrix-item-status {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent-green);
  letter-spacing: 0.05em;
}

/* ===================================================================
   订阅套餐价格矩阵 (Subscription Pricing Matrix)
   =================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

.pricing-box:hover {
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-3px);
}

/* 核心主推 VIP2 卡片 */
.pricing-box.featured {
  border-color: var(--swiss-red);
  background: #15151c;
  box-shadow: 0 0 35px rgba(255, 51, 51, 0.15);
}

.pricing-ribbon {
  position: absolute;
  top: 0;
  right: 0;
  background: var(--swiss-red);
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 5px 12px;
  border-radius: 0 var(--radius-xs) 0 var(--radius-xs);
}

.plan-index {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--swiss-red);
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.pricing-box h3 {
  font-size: 1.45rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: #ffffff;
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 24px;
  min-height: 42px;
}

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

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

.price-val {
  font-size: 3.2rem;
  font-weight: 900;
  letter-spacing: -0.05em;
  color: #ffffff;
  line-height: 1;
}

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

.plan-traffic-pill {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  color: #ffffff;
  margin-bottom: 24px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.pricing-box.featured .plan-traffic-pill {
  background: rgba(255, 51, 51, 0.08);
  border-color: var(--border-red);
  color: #ffffff;
}

.plan-specs {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.plan-specs li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-sub);
  line-height: 1.5;
}

.plan-specs li svg {
  width: 16px;
  height: 16px;
  fill: var(--swiss-red);
  flex-shrink: 0;
  margin-top: 3px;
}

.plan-cta {
  width: 100%;
}

/* ===================================================================
   系统监控与零日志终端区 (Telemetry & Terminal Section)
   =================================================================== */
.audit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: stretch;
}

.metrics-dashboard {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  padding: 32px;
  display: flex;
  flex-direction: column;
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 24px;
}

.dashboard-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.dashboard-status {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-green);
  display: flex;
  align-items: center;
  gap: 6px;
}

.metrics-2x2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.metric-card-inner {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  padding: 18px 16px;
  border-radius: var(--radius-xs);
}

.metric-big {
  font-family: var(--font-sans);
  font-size: 1.85rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1.1;
  margin-bottom: 4px;
}

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

/* 瑞士终端仿真 (Swiss Terminal Emulator) */
.terminal-window {
  background: #09090c;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  font-family: var(--font-mono);
}

.terminal-topbar {
  background: #111115;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
}

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

.t-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #27272a;
}

.t-dot.red { background: #ef4444; }
.t-dot.yellow { background: #eab308; }
.t-dot.green { background: #22c55e; }

.terminal-title {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.terminal-content {
  padding: 22px;
  font-size: 0.8rem;
  line-height: 1.7;
  color: #d4d4d8;
  overflow-x: auto;
}

.cmd-line {
  color: #ffffff;
  margin-bottom: 6px;
}

.cmd-prompt {
  color: var(--swiss-red);
  margin-right: 8px;
}

.cmd-res {
  color: var(--text-muted);
  margin-bottom: 6px;
}

.cmd-res.pass {
  color: #4ade80;
}

.cmd-res.audit {
  color: var(--accent-cyan);
  font-weight: 700;
}

/* ===================================================================
   用户口碑评价网格 (Testimonials Section)
   =================================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

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

.review-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.reviewer-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.reviewer-avatar-box {
  width: 40px;
  height: 40px;
  background: rgba(255, 51, 51, 0.1);
  border: 1px solid var(--border-red);
  color: var(--swiss-red);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  border-radius: var(--radius-xs);
}

.reviewer-name {
  font-weight: 800;
  font-size: 0.95rem;
  color: #ffffff;
}

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

.review-stars {
  color: #facc15;
  font-size: 0.85rem;
}

.review-quote {
  font-size: 0.92rem;
  color: var(--text-sub);
  line-height: 1.7;
}

/* ===================================================================
   常见问题解答手风琴 (FAQ Section)
   =================================================================== */
.faq-grid {
  max-width: 920px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xs);
  transition: var(--transition);
}

.faq-box[open] {
  border-color: rgba(255, 255, 255, 0.3);
  background: var(--bg-card-hover);
}

.faq-title {
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 700;
  font-size: 1.02rem;
  color: #ffffff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  user-select: none;
}

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

.faq-icon-toggle {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--swiss-red);
  transition: transform 0.2s ease;
}

.faq-box[open] .faq-icon-toggle {
  transform: rotate(45deg);
}

.faq-content {
  padding: 0 24px 22px;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px;
}

/* ===================================================================
   底部主转化横幅 (Bottom CTA Banner)
   =================================================================== */
.cta-banner-section {
  padding: 90px 0;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  position: relative;
}

.cta-banner-box {
  background: #111116;
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--swiss-red);
  padding: 60px 48px;
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.cta-text-wrap {
  max-width: 650px;
}

.cta-heading {
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  font-weight: 900;
  color: #ffffff;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 12px;
}

.cta-subtext {
  font-size: 1.02rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===================================================================
   页脚 (Site Footer)
   =================================================================== */
.site-footer {
  padding: 60px 0 40px;
  background: var(--bg-main);
  border-top: 1px solid var(--border-color);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: 32px;
}

.footer-brand-info {
  max-width: 400px;
}

.footer-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-top: 12px;
  line-height: 1.6;
}

.footer-links-group {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--swiss-red);
  margin-bottom: 16px;
}

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

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

.footer-col a:hover {
  color: #ffffff;
}

.footer-bottom {
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-dark);
  flex-wrap: wrap;
  gap: 16px;
}

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

.footer-bottom a:hover {
  color: #ffffff;
}

/* ===================================================================
   移动端与响应式适配规则 (Mobile & Responsive Rules)
   =================================================================== */
@media (max-width: 1024px) {
  .hero-telemetry-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .telemetry-cell:nth-child(2) {
    border-right: none;
  }
  .telemetry-cell:nth-child(1), .telemetry-cell:nth-child(2) {
    border-bottom: 1px solid var(--border-color);
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .matrix-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }
  .audit-grid {
    grid-template-columns: 1fr;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .navbar {
    height: 64px;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #09090c;
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 16px 24px;
    gap: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
  }
  .nav-links.active {
    display: flex;
  }
  .nav-links a {
    width: 100%;
    padding: 12px 16px;
    font-size: 0.95rem;
    border-bottom: 1px solid var(--border-subtle);
  }
  .hero-section {
    padding-top: 104px;
    padding-bottom: 50px;
  }
  .hero-title {
    font-size: 2.15rem;
  }
  .hero-telemetry-grid {
    grid-template-columns: 1fr;
  }
  .telemetry-cell {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }
  .telemetry-cell:last-child {
    border-bottom: none;
  }
  .matrix-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cta-banner-box {
    padding: 36px 24px;
  }
  .footer-top {
    flex-direction: column;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}