/* ==========================================================================
   Peiqian Cloud (赔钱机场) 2026 AI算力实验室 - 核心样式表
   主题色彩规范：深邃极夜黑 (#080C14) + 全息激光青蓝 (#06B6D4 / #00F0FF) + 赛博冷银钛白 (#E2E8F0)
   ========================================================================== */

:root {
  --bg-primary: #080C14;
  --bg-secondary: #0D1424;
  --bg-card: rgba(13, 20, 36, 0.75);
  --bg-card-hover: rgba(18, 28, 51, 0.9);
  --bg-glass: rgba(8, 12, 20, 0.85);

  --cyan-core: #00F0FF;
  --cyan-sub: #06B6D4;
  --cyan-dark: #0891B2;
  --cyan-glow: rgba(0, 240, 255, 0.25);
  --cyan-glow-strong: rgba(0, 240, 255, 0.5);

  --silver-white: #F8FAFC;
  --silver-titanium: #E2E8F0;
  --text-muted: #94A3B8;
  --text-dim: #64748B;

  --border-subtle: rgba(0, 240, 255, 0.16);
  --border-active: rgba(0, 240, 255, 0.55);
  --border-card: rgba(226, 232, 240, 0.1);

  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", Consolas, Monaco, monospace;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --max-width: 1240px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-primary);
  color: var(--silver-titanium);
  font-family: var(--font-main);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(6, 182, 212, 0.14) 0%, transparent 60%),
    radial-gradient(circle at 90% 40%, rgba(0, 240, 255, 0.05) 0%, transparent 45%),
    linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 48px 48px, 48px 48px;
  background-position: 0 0, 0 0, -1px -1px, -1px -1px;
}

/* 链接标准与无下划线 */
a {
  color: var(--cyan-core);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: #67e8f9;
}

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

/* 容器与版心 */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* 赛博切角面板规范 (Chamfered Card) */
.cyber-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  position: relative;
  transition: all var(--transition-smooth);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.cyber-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 16px;
  height: 2px;
  background: var(--cyan-core);
  box-shadow: 0 0 8px var(--cyan-core);
}

.cyber-card:hover {
  border-color: var(--border-active);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.55), 0 0 25px var(--cyan-glow);
}

/* 赛博按钮规范 */
.btn-cyber-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, #00F0FF 0%, #0891B2 100%);
  color: #040810 !important;
  font-weight: 700;
  font-size: 0.98rem;
  letter-spacing: 0.5px;
  padding: 13px 28px;
  border-radius: 4px;
  border: 1px solid #00F0FF;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 0 18px var(--cyan-glow-strong);
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.btn-cyber-primary:hover {
  background: linear-gradient(135deg, #38BDF8 0%, #00F0FF 100%);
  box-shadow: 0 0 28px rgba(0, 240, 255, 0.8);
  transform: translateY(-2px);
  color: #000 !important;
}

.btn-cyber-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(13, 20, 36, 0.7);
  color: var(--silver-titanium) !important;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 24px;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
  font-family: var(--font-mono);
}

.btn-cyber-ghost:hover {
  border-color: var(--cyan-core);
  color: var(--cyan-core) !important;
  background: rgba(0, 240, 255, 0.08);
  box-shadow: 0 0 16px var(--cyan-glow);
}

/* 头部导航 Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(8, 12, 20, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  height: 76px;
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.site-logo {
  display: flex;
  align-items: center;
  height: 52px;
}

.site-logo img {
  height: 48px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--silver-titanium);
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.3px;
  position: relative;
  padding: 6px 0;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--cyan-core);
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--cyan-core);
  transition: width var(--transition-fast);
}

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

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

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-subtle);
  color: var(--silver-titanium);
  padding: 8px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1.2rem;
}

/* 徽章 Badge */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border-radius: 20px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.3);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--cyan-core);
  letter-spacing: 0.5px;
  margin-bottom: 18px;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan-core);
  box-shadow: 0 0 8px var(--cyan-core);
  animation: pulse-glow 2s infinite ease-in-out;
}

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

/* Hero Section */
.hero-section {
  padding: 80px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}

.hero-title {
  font-size: 2.85rem;
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.5px;
  color: var(--silver-white);
  margin-bottom: 20px;
}

.hero-title .text-gradient {
  background: linear-gradient(135deg, #FFFFFF 20%, #00F0FF 75%, #06B6D4 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--border-card);
}

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

.metric-num {
  font-family: var(--font-mono);
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--cyan-core);
  text-shadow: 0 0 12px var(--cyan-glow);
}

.metric-desc {
  font-size: 0.82rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Hero 视效卡片 / 算力雷达面板 */
.hero-visual-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6), 0 0 25px rgba(0, 240, 255, 0.12);
}

.visual-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--border-card);
}

.visual-title {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--silver-titanium);
  display: flex;
  align-items: center;
  gap: 8px;
}

.node-pulse-indicator {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10B981;
  box-shadow: 0 0 8px #10B981;
}

.visual-console {
  background: #05080E;
  border: 1px solid rgba(0, 240, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: #38BDF8;
  line-height: 1.7;
}

.console-line {
  margin-bottom: 6px;
  display: flex;
  justify-content: space-between;
}

.console-line .val {
  color: var(--cyan-core);
  font-weight: 600;
}

.console-line .pass {
  color: #10B981;
}

/* 核心板块公共样式 */
.section-block {
  padding: 85px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 52px;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--cyan-core);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: inline-block;
}

.section-title {
  font-size: 2.15rem;
  font-weight: 800;
  color: var(--silver-white);
  line-height: 1.3;
  margin-bottom: 14px;
}

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

/* 板块1：住宅IP纯净度检测看板 */
.fraud-test-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.test-tool-card {
  padding: 28px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
}

.tool-badge-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.tool-name {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--silver-white);
}

.score-display-box {
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(16, 185, 129, 0.35);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.score-num {
  font-family: var(--font-mono);
  font-size: 2.4rem;
  font-weight: 900;
  color: #10B981;
  text-shadow: 0 0 15px rgba(16, 185, 129, 0.4);
}

.score-level {
  font-size: 0.88rem;
  color: #10B981;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.ip-meta-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.ip-meta-table tr {
  border-bottom: 1px solid rgba(226, 232, 240, 0.06);
}

.ip-meta-table tr:last-child {
  border-bottom: none;
}

.ip-meta-table td {
  padding: 10px 0;
  color: var(--text-muted);
}

.ip-meta-table td.val {
  text-align: right;
  color: var(--silver-titanium);
  font-weight: 600;
}

.badge-tag-pure {
  background: rgba(16, 185, 129, 0.15);
  color: #10B981;
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 0.75rem;
}

/* 板块2：AI 模型 TTFT 首字响应与流式看板 */
.ai-benchmark-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.ai-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
  position: relative;
  transition: all var(--transition-smooth);
}

.ai-card:hover {
  border-color: var(--cyan-core);
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 240, 255, 0.18);
}

.ai-icon-wrap {
  width: 52px;
  height: 52px;
  margin: 0 auto 16px;
  border-radius: 12px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan-core);
}

.ai-model-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--silver-white);
  margin-bottom: 6px;
}

.ai-ttft-stat {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--cyan-core);
  margin: 12px 0 4px;
}

.ai-ttft-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
}

.ai-pass-rate {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--border-card);
  font-size: 0.8rem;
  color: #10B981;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
}

/* 板块3：跨境电商与多账号防关联方案 */
.isolation-showcase {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.iso-feature-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 30px 24px;
  transition: all var(--transition-smooth);
}

.iso-feature-box:hover {
  border-color: var(--border-active);
  transform: translateY(-3px);
}

.iso-icon {
  font-size: 1.8rem;
  margin-bottom: 16px;
  color: var(--cyan-core);
}

.iso-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--silver-white);
  margin-bottom: 12px;
}

.iso-text {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* 板块4：资费套餐横向看板 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-smooth);
}

.price-card.featured {
  background: linear-gradient(180deg, rgba(6, 182, 212, 0.12) 0%, rgba(13, 20, 36, 0.95) 100%);
  border-color: var(--cyan-core);
  box-shadow: 0 0 35px rgba(0, 240, 255, 0.22);
  transform: scale(1.03);
}

.featured-flag {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--cyan-core);
  color: #040810;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: 12px;
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

.plan-type {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--silver-white);
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  min-height: 40px;
}

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

.price-currency {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--cyan-core);
}

.price-val {
  font-family: var(--font-mono);
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--silver-white);
  line-height: 1;
}

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

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

.plan-features li {
  font-size: 0.9rem;
  color: var(--silver-titanium);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.plan-features li svg {
  color: var(--cyan-core);
  flex-shrink: 0;
}

/* FAQ 板块 */
.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.active {
  border-color: var(--border-active);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--silver-white);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.faq-icon-arrow {
  transition: transform var(--transition-fast);
  color: var(--cyan-core);
  flex-shrink: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

.faq-item.active .faq-answer {
  max-height: 380px;
  padding-bottom: 20px;
}

/* 文章矩阵与技术博客专区 */
.article-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-smooth);
}

.article-card:hover {
  border-color: var(--cyan-core);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45), 0 0 20px var(--cyan-glow);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--cyan-core);
  margin-bottom: 14px;
}

.article-meta span.date {
  color: var(--text-dim);
}

.article-heading {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--silver-white);
  line-height: 1.4;
  margin-bottom: 12px;
}

.article-heading a {
  color: var(--silver-white);
}

.article-heading a:hover {
  color: var(--cyan-core);
}

.article-snippet {
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-link-read {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--cyan-core);
}

/* 博客详情页规范 */
.article-page-wrap {
  padding: 60px 0 100px;
}

.article-header-hero {
  margin-bottom: 40px;
  border-bottom: 1px solid var(--border-card);
  padding-bottom: 30px;
}

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

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

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

.article-post-title {
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--silver-white);
  line-height: 1.28;
  margin-bottom: 18px;
}

.article-post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--text-dim);
}

.article-post-meta span.author {
  color: var(--cyan-core);
  font-weight: 600;
}

.article-body-content {
  font-size: 1.05rem;
  color: var(--silver-titanium);
  line-height: 1.85;
  max-width: 880px;
}

.article-body-content h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--silver-white);
  margin: 44px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-card);
}

.article-body-content h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--cyan-core);
  margin: 32px 0 14px;
}

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

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

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

.article-body-content code {
  background: rgba(0, 240, 255, 0.08);
  color: var(--cyan-core);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.9em;
  border: 1px solid rgba(0, 240, 255, 0.2);
}

.article-body-content pre {
  background: #05080E;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px;
  overflow-x: auto;
  margin-bottom: 24px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.65;
  color: #38BDF8;
}

.article-callout {
  background: rgba(6, 182, 212, 0.08);
  border-left: 4px solid var(--cyan-core);
  padding: 20px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 32px 0;
}

.article-callout-title {
  font-weight: 700;
  color: var(--cyan-core);
  font-size: 1.02rem;
  margin-bottom: 8px;
}

/* 安全跳转中间页专用样式 */
.redirect-wrap {
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
}

.redirect-card {
  background: var(--bg-card);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-lg);
  padding: 48px 36px;
  max-width: 540px;
  width: 100%;
  text-align: center;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6), 0 0 30px var(--cyan-glow);
}

.spinner-wrap {
  position: relative;
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
}

.spinner-circle {
  width: 80px;
  height: 80px;
  border: 4px solid rgba(0, 240, 255, 0.15);
  border-top: 4px solid var(--cyan-core);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.countdown-number {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--cyan-core);
}

/* 页脚 Footer */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  background: #04070D;
  padding: 60px 0 30px;
  margin-top: 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--silver-white);
  letter-spacing: 0.8px;
  margin-bottom: 18px;
  text-transform: uppercase;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

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

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

.footer-bottom {
  padding-top: 28px;
  border-top: 1px solid var(--border-card);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* 响应式断点 */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin: 0 auto;
  }
  .price-card.featured {
    transform: none;
  }
  .ai-benchmark-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .isolation-showcase {
    grid-template-columns: 1fr;
  }
  .article-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .site-header {
    height: 68px;
  }
  .menu-toggle {
    display: block;
  }
  .nav-links {
    position: fixed;
    top: 68px;
    left: 0;
    width: 100%;
    background: #080C14;
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 18px;
    display: none;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-action .btn-cyber-primary {
    display: none;
  }
  .hero-title {
    font-size: 2.1rem;
  }
  .hero-metrics {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .fraud-test-container {
    grid-template-columns: 1fr;
  }
  .ai-benchmark-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}