/* ====================================================================
   龙猫云 (longmaoyun.online) - Vibrant Tech Spectrum Stylesheet
   高光科技光谱 | 动静视觉多维丰富 | 极速首屏 | 纯系统字体栈
   ==================================================================== */

:root {
  /* 基础画布与表面 */
  --bg-canvas: #f8fafc;
  --bg-surface: #ffffff;
  --bg-subtle: #f1f5f9;
  --bg-dark: #090d16;
  --bg-dark-surface: #111827;
  --bg-dark-elevated: #1e293b;

  /* 文字系统 */
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-inverse: #f8fafc;
  --text-inverse-muted: #94a3b8;

  /* 边框系统 */
  --border-line: #e2e8f0;
  --border-strong: #cbd5e1;
  --border-dark: #1e293b;

  /* 色彩光谱体系 (Vibrant Spectrum) */
  --accent-emerald: #059669;
  --accent-emerald-hover: #047857;
  --accent-emerald-light: #ecfdf5;
  --accent-emerald-border: #a7f3d0;

  --accent-cyan: #0284c7;
  --accent-cyan-light: #f0f9ff;
  --accent-cyan-border: #bae6fd;

  --accent-indigo: #4f46e5;
  --accent-indigo-hover: #4338ca;
  --accent-indigo-light: #eef2ff;
  --accent-indigo-border: #c7d2fe;

  --accent-purple: #7c3aed;
  --accent-purple-light: #f5f3ff;
  --accent-purple-border: #ddd6fe;

  --accent-amber: #d97706;
  --accent-amber-light: #fffbeb;
  --accent-amber-border: #fde68a;

  --accent-rose: #e11d48;
  --accent-rose-light: #fff1f2;
  --accent-rose-border: #fecdd3;

  /* 微倒角几何 */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  /* 字体与排版 */
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;

  --container-max: 1160px;
}

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-canvas);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  padding-bottom: 76px;
}

@media (min-width: 768px) {
  body {
    padding-bottom: 0;
  }
}

a {
  color: var(--accent-indigo);
  text-decoration: none;
  transition: all 0.18s ease;
}

a:hover {
  color: var(--accent-indigo-hover);
}

/* 容器架构 */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* 顶栏 Header */
.site-header {
  background-color: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-line);
  position: sticky;
  top: 0;
  z-index: 50;
  transition: all 0.2s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.brand-logo .logo-mark,
.brand-logo .logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
  color: #ffffff;
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 0.95rem;
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.3);
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: 24px;
}

.nav-desktop a {
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.15s ease;
}

.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--accent-indigo);
  font-weight: 600;
}

/* 状态药丸与动态脉冲光 */
.header-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--accent-emerald);
  background-color: var(--accent-emerald-light);
  padding: 4px 12px;
  border-radius: 9999px;
  border: 1px solid var(--accent-emerald-border);
}

.pulse-dot {
  width: 7px;
  height: 7px;
  background-color: var(--accent-emerald);
  border-radius: 50%;
  position: relative;
}

.pulse-dot::after {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 2px solid var(--accent-emerald);
  animation: statusRipple 2s infinite ease-out;
  opacity: 0.8;
}

@keyframes statusRipple {
  0% {
    transform: scale(0.6);
    opacity: 1;
  }
  100% {
    transform: scale(2.2);
    opacity: 0;
  }
}

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

.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-xs);
  color: var(--text-primary);
  cursor: pointer;
}

@media (min-width: 900px) {
  .nav-desktop {
    display: flex;
  }
  .mobile-menu-btn {
    display: none;
  }
}

/* 移动端菜单抽屉 */
.mobile-nav-panel {
  display: none;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-line);
  padding: 18px 20px;
}

.mobile-nav-panel.is-open {
  display: block;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mobile-nav-links a {
  color: var(--text-primary);
  font-size: 0.98rem;
  font-weight: 500;
  padding: 8px 0;
  border-bottom: 1px solid var(--bg-subtle);
}

/* 按钮与多彩控件 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  font-size: 0.94rem;
  font-weight: 600;
  border-radius: var(--radius-xs);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  line-height: 1.35;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, #090d16 0%, #1e293b 100%);
  color: #ffffff;
  border-color: #090d16;
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.15);
}

.btn-primary:hover {
  background: #1e293b;
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.25);
}

.btn-emerald {
  background: linear-gradient(135deg, #059669 0%, #0d9488 100%);
  color: #ffffff;
  border-color: #059669;
  box-shadow: 0 3px 10px rgba(5, 150, 105, 0.25);
}

.btn-emerald:hover {
  background: linear-gradient(135deg, #047857 0%, #0f766e 100%);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(5, 150, 105, 0.35);
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  background-color: var(--bg-subtle);
  border-color: var(--accent-indigo);
  color: var(--accent-indigo);
}

.btn-lg {
  padding: 13px 28px;
  font-size: 1.02rem;
}

.btn-block {
  width: 100%;
}

/* 通用区块排版 */
.section {
  padding: 72px 0;
  position: relative;
}

@media (min-width: 768px) {
  .section {
    padding: 96px 0;
  }
}

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

.section-header {
  max-width: 700px;
  margin-bottom: 48px;
}

.section-header.text-center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-indigo);
  margin-bottom: 8px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: inline-block;
  background-color: var(--accent-indigo-light);
  padding: 3px 10px;
  border-radius: var(--radius-xs);
}

.section-title {
  font-size: 1.95rem;
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1.25;
  margin-bottom: 14px;
}

@media (min-width: 768px) {
  .section-title {
    font-size: 2.45rem;
  }
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.68;
}

/* ====================================================================
   HERO 区域：多彩环境光晕与交互式监控看板
   ==================================================================== */
.hero-section {
  padding: 56px 0 76px 0;
  background: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.08) 0%, rgba(6, 182, 212, 0.04) 45%, transparent 70%), var(--bg-canvas);
  border-bottom: 1px solid var(--border-line);
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .hero-section {
    padding: 84px 0 100px 0;
  }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

@media (min-width: 960px) {
  .hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 52px;
  }
}

.hero-content {
  display: flex;
  flex-direction: column;
}

.hero-meta-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-indigo);
  background-color: var(--bg-surface);
  border: 1px solid var(--accent-indigo-border);
  padding: 4px 12px;
  border-radius: 9999px;
  width: fit-content;
  margin-bottom: 20px;
  box-shadow: 0 2px 6px rgba(79, 70, 229, 0.08);
}

.hero-title {
  font-size: 2.35rem;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  margin-bottom: 18px;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 3.25rem;
  }
}

.hero-subtitle {
  font-size: 1.14rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 34px;
  max-width: 580px;
}

.hero-cta-group {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 38px;
}

@media (min-width: 480px) {
  .hero-cta-group {
    flex-direction: row;
  }
}

.hero-indicators {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  padding-top: 28px;
  border-top: 1px solid var(--border-line);
}

@media (min-width: 540px) {
  .hero-indicators {
    grid-template-columns: repeat(4, 1fr);
  }
}

.indicator-item {
  border-left: 3px solid var(--accent-cyan);
  padding-left: 12px;
  transition: border-color 0.2s ease;
}

.indicator-item:nth-child(2) { border-left-color: var(--accent-emerald); }
.indicator-item:nth-child(3) { border-left-color: var(--accent-purple); }
.indicator-item:nth-child(4) { border-left-color: var(--accent-amber); }

.indicator-num {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
  display: block;
}

.indicator-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 3px;
}

/* ====================================================================
   交互式网络监控控制台 (Interactive Network Console)
   ==================================================================== */
.network-console {
  background: linear-gradient(145deg, #0b0f19 0%, #111827 100%);
  color: #f8fafc;
  border-radius: var(--radius-sm);
  border: 1px solid #1e293b;
  box-shadow: 0 20px 40px -15px rgba(11, 15, 25, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.05);
  overflow: hidden;
  font-family: var(--font-mono);
}

.console-head {
  background-color: rgba(15, 23, 42, 0.85);
  padding: 12px 18px;
  border-bottom: 1px solid #1e293b;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-inverse-muted);
}

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

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

.console-tabs {
  display: flex;
  background-color: #0d1322;
  border-bottom: 1px solid #1e293b;
  padding: 6px 12px;
  gap: 6px;
  overflow-x: auto;
}

.console-tab-btn {
  background: transparent;
  border: 1px solid transparent;
  color: #94a3b8;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 5px 12px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.console-tab-btn:hover {
  color: #f8fafc;
  background-color: rgba(255, 255, 255, 0.05);
}

.console-tab-btn.is-active {
  color: #38bdf8;
  background-color: rgba(56, 189, 248, 0.12);
  border-color: rgba(56, 189, 248, 0.3);
  font-weight: 700;
}

.console-body {
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  font-size: 0.82rem;
}

.console-live-hero {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(30, 41, 59, 0.4);
  padding: 14px 18px;
  border-radius: var(--radius-xs);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.live-hero-left {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.live-hero-node-title {
  color: #f8fafc;
  font-size: 0.95rem;
  font-weight: 700;
}

.live-hero-node-route {
  color: #94a3b8;
  font-size: 0.75rem;
}

.live-hero-right {
  text-align: right;
}

.live-ping-val {
  font-size: 1.4rem;
  font-weight: 900;
  color: #34d399;
  line-height: 1;
}

.live-ping-sub {
  font-size: 0.72rem;
  color: #94a3b8;
  margin-top: 2px;
}

.console-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #1a2234;
  padding-bottom: 10px;
}

.console-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.route-name {
  color: #f1f5f9;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.route-state {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #34d399;
  font-size: 0.76rem;
}

.route-stat {
  color: #94a3b8;
}

/* ====================================================================
   特性卡片：多色彩主题与动态悬浮 (Features)
   ==================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

@media (min-width: 640px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.feature-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-sm);
  padding: 26px 22px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.feature-card:hover {
  transform: translateY(-4px);
}

/* 4 张卡片专属色阶 */
.feature-card.theme-cyan:hover {
  border-color: var(--accent-cyan-border);
  box-shadow: 0 12px 24px -6px rgba(2, 132, 199, 0.12);
}
.feature-card.theme-emerald:hover {
  border-color: var(--accent-emerald-border);
  box-shadow: 0 12px 24px -6px rgba(5, 150, 105, 0.12);
}
.feature-card.theme-indigo:hover {
  border-color: var(--accent-indigo-border);
  box-shadow: 0 12px 24px -6px rgba(79, 70, 229, 0.12);
}
.feature-card.theme-purple:hover {
  border-color: var(--accent-purple-border);
  box-shadow: 0 12px 24px -6px rgba(124, 58, 237, 0.12);
}

.feature-idx {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.feature-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  transition: transform 0.2s ease;
}

.feature-card:hover .feature-icon-box {
  transform: scale(1.08);
}

.icon-box-cyan {
  background-color: var(--accent-cyan-light);
  color: var(--accent-cyan);
  border: 1px solid var(--accent-cyan-border);
}

.icon-box-emerald {
  background-color: var(--accent-emerald-light);
  color: var(--accent-emerald);
  border: 1px solid var(--accent-emerald-border);
}

.icon-box-indigo {
  background-color: var(--accent-indigo-light);
  color: var(--accent-indigo);
  border: 1px solid var(--accent-indigo-border);
}

.icon-box-purple {
  background-color: var(--accent-purple-light);
  color: var(--accent-purple);
  border: 1px solid var(--accent-purple-border);
}

.feature-title {
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: -0.015em;
}

.feature-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ====================================================================
   优势解析与晚高峰数据对比仪表条 (Benefits & Visual Meter)
   ==================================================================== */
.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

@media (min-width: 768px) {
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.benefit-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-sm);
  padding: 32px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

.benefit-box h3 {
  font-size: 1.3rem;
  font-weight: 800;
  margin-bottom: 14px;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.benefit-box p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.68;
  margin-bottom: 20px;
}

.compare-meters-card {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-xs);
  padding: 18px;
  margin: 20px 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.meter-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.meter-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 700;
}

.meter-bar-track {
  width: 100%;
  height: 8px;
  background-color: #e2e8f0;
  border-radius: 9999px;
  overflow: hidden;
}

.meter-bar-congested {
  width: 42%;
  height: 100%;
  background: linear-gradient(90deg, #f59e0b, #ef4444);
  border-radius: 9999px;
}

.meter-bar-optimal {
  width: 98%;
  height: 100%;
  background: linear-gradient(90deg, #10b981, #06b6d4);
  border-radius: 9999px;
}

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

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

.benefit-list li::before {
  content: "—";
  color: var(--accent-emerald);
  font-weight: 800;
}

/* ====================================================================
   支持平台多彩品牌徽标 (Streaming & AI Colorful Badges)
   ==================================================================== */
.support-dual-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

@media (min-width: 860px) {
  .support-dual-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.support-panel {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-sm);
  padding: 32px;
}

.support-panel h3 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.support-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0;
}

.service-tag {
  padding: 6px 14px;
  border-radius: var(--radius-xs);
  font-size: 0.85rem;
  font-family: var(--font-mono);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: transform 0.15s ease;
}

.service-tag:hover {
  transform: translateY(-2px);
}

/* 流媒体品牌专属彩色徽章 */
.tag-netflix { background-color: #fef2f2; color: #dc2626; border: 1px solid #fecaca; }
.tag-disney { background-color: #f0f9ff; color: #0284c7; border: 1px solid #bae6fd; }
.tag-youtube { background-color: #fff1f2; color: #e11d48; border: 1px solid #fecdd3; }
.tag-spotify { background-color: #f0fdf4; color: #16a34a; border: 1px solid #bbf7d0; }
.tag-hbo { background-color: #faf5ff; color: #9333ea; border: 1px solid #e9d5ff; }
.tag-prime { background-color: #f0fdfa; color: #0d9488; border: 1px solid #99f6e4; }

/* AI 工具专属彩色徽章 */
.tag-chatgpt { background-color: #f0fdfa; color: #0f766e; border: 1px solid #99f6e4; }
.tag-claude { background-color: #fff7ed; color: #c2410c; border: 1px solid #ffedd5; }
.tag-midjourney { background-color: #f5f3ff; color: #7c3aed; border: 1px solid #ddd6fe; }
.tag-copilot { background-color: #eef2ff; color: #4338ca; border: 1px solid #c7d2fe; }
.tag-perplexity { background-color: #ecfeff; color: #0e7490; border: 1px solid #a5f3fc; }
.tag-cursor { background-color: #fdf2f8; color: #be185d; border: 1px solid #fbcfe8; }

/* ====================================================================
   使用场景卡 (Scenarios)
   ==================================================================== */
.scenarios-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

@media (min-width: 768px) {
  .scenarios-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.scenario-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-sm);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: all 0.25s ease;
}

.scenario-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  box-shadow: 0 10px 20px -5px rgba(0, 0, 0, 0.05);
}

.scenario-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border-line);
  padding-bottom: 14px;
}

.scenario-title {
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--text-primary);
}

.scenario-devices {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--accent-indigo);
  background-color: var(--accent-indigo-light);
  padding: 3px 8px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--accent-indigo-border);
}

.scenario-desc {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ====================================================================
   定价方案 (Pricing)：层次分明的黑金对比
   ==================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: stretch;
}

@media (min-width: 860px) {
  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pricing-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-sm);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.25s ease;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px -8px rgba(0, 0, 0, 0.08);
}

/* 核心主力档位：高饱和渐变边框与深黑尊贵感 */
.pricing-card.is-popular {
  background: linear-gradient(145deg, #090d16 0%, #172033 100%);
  color: #f8fafc;
  border-color: #3b82f6;
  box-shadow: 0 16px 36px -8px rgba(15, 23, 42, 0.4), 0 0 0 1px rgba(59, 130, 246, 0.3);
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 24px;
  background: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 800;
  font-family: var(--font-mono);
  padding: 4px 14px;
  border-radius: 9999px;
  letter-spacing: 0.04em;
  box-shadow: 0 4px 10px rgba(6, 182, 212, 0.3);
}

.pricing-target {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
}

.pricing-card.is-popular .pricing-target {
  color: #38bdf8;
}

.pricing-tier-name {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.pricing-card.is-popular .pricing-tier-name {
  color: #ffffff;
}

.pricing-tier-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  min-height: 42px;
  line-height: 1.55;
}

.pricing-card.is-popular .pricing-tier-desc {
  color: #94a3b8;
}

.pricing-cost {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-line);
}

.pricing-card.is-popular .pricing-cost {
  border-bottom-color: #1e293b;
}

.pricing-currency {
  font-size: 1.3rem;
  font-weight: 800;
  color: inherit;
}

.pricing-amount {
  font-size: 3rem;
  font-weight: 900;
  color: inherit;
  font-family: var(--font-mono);
  line-height: 1;
}

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

.pricing-card.is-popular .pricing-period {
  color: #94a3b8;
}

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

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

.pricing-card.is-popular .pricing-features-list li {
  color: #cbd5e1;
}

.pricing-features-list li .check-mark {
  color: var(--accent-emerald);
  font-weight: 900;
  font-family: var(--font-mono);
}

.pricing-card.is-popular .check-mark {
  color: #34d399;
}

/* ====================================================================
   常见问题 (FAQ)：平滑动态手风琴
   ==================================================================== */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-xs);
  overflow: hidden;
  transition: all 0.2s ease;
}

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

.faq-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 19px 24px;
  text-align: left;
  background: none;
  border: none;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
}

.faq-icon {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  color: var(--text-muted);
  transition: transform 0.25s ease, color 0.2s ease;
  line-height: 1;
}

.faq-item.is-active .faq-icon {
  transform: rotate(45deg);
  color: var(--accent-indigo);
}

.faq-body {
  display: none;
  padding: 0 24px 22px 24px;
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.7;
  border-top: 1px solid var(--border-line);
  padding-top: 16px;
}

.faq-item.is-active .faq-body {
  display: block;
}

/* ====================================================================
   Final CTA 模块
   ==================================================================== */
.final-cta-section {
  background: radial-gradient(circle at 50% 20%, rgba(99, 102, 241, 0.15), transparent 70%), linear-gradient(180deg, #090d16 0%, #111827 100%);
  color: #ffffff;
  border-top: 1px solid #1e293b;
  padding: 80px 0;
  text-align: center;
}

.final-cta-box {
  max-width: 740px;
  margin: 0 auto;
}

.final-cta-box h2 {
  font-size: 2.25rem;
  font-weight: 900;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
  color: #ffffff;
}

.final-cta-box p {
  font-size: 1.1rem;
  color: #94a3b8;
  margin-bottom: 32px;
  line-height: 1.7;
}

/* ====================================================================
   页脚 Footer
   ==================================================================== */
.site-footer {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-line);
  padding: 48px 0 24px 0;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin-bottom: 38px;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2.2fr 1fr 1fr;
  }
}

.footer-brand h4 {
  font-size: 1.18rem;
  font-weight: 800;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 360px;
}

.footer-col h5 {
  font-size: 0.88rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-primary);
  margin-bottom: 14px;
  text-transform: uppercase;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-links a:hover {
  color: var(--accent-indigo);
}

.footer-bottom {
  padding-top: 22px;
  border-top: 1px solid var(--border-line);
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer-disclaimer-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
  max-width: 760px;
}

/* ====================================================================
   移动端吸底 CTA：多彩微坞
   ==================================================================== */
.mobile-sticky-cta {
  display: none;
  position: fixed;
  bottom: 12px;
  left: 14px;
  right: 14px;
  background: linear-gradient(135deg, #090d16 0%, #1e293b 100%);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 11px 16px;
  z-index: 99;
  box-shadow: 0 12px 28px -4px rgba(0, 0, 0, 0.45);
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

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

.sticky-brand {
  font-size: 0.9rem;
  font-weight: 800;
  color: #ffffff;
}

.sticky-sub {
  font-size: 0.74rem;
  font-family: var(--font-mono);
  color: #38bdf8;
}

/* ====================================================================
   文章与合规页样式
   ==================================================================== */
.page-container {
  padding: 48px 0 72px 0;
}

.article-header {
  margin-bottom: 34px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border-line);
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  font-family: var(--font-mono);
}

.article-title {
  font-size: 2.1rem;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}

@media (min-width: 768px) {
  .article-title {
    font-size: 2.5rem;
  }
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.article-lead {
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 30px;
  background-color: var(--bg-surface);
  padding: 24px;
  border-left: 4px solid var(--accent-indigo);
  border-radius: var(--radius-xs);
  border-top: 1px solid var(--border-line);
  border-right: 1px solid var(--border-line);
  border-bottom: 1px solid var(--border-line);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

.article-content {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-sm);
  padding: 32px 22px;
  font-size: 1.04rem;
  line-height: 1.82;
  color: var(--text-primary);
}

@media (min-width: 768px) {
  .article-content {
    padding: 48px;
  }
}

.article-content h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 38px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-line);
  letter-spacing: -0.02em;
}

.article-content h3 {
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 26px;
  margin-bottom: 12px;
}

.article-content p {
  margin-bottom: 20px;
  color: var(--text-secondary);
}

.article-content ul,
.article-content ol {
  margin-bottom: 22px;
  padding-left: 22px;
  color: var(--text-secondary);
}

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

.article-table-wrap {
  overflow-x: auto;
  margin: 26px 0;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-xs);
}

.content-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  text-align: left;
}

.content-table th,
.content-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-line);
}

.content-table th {
  background-color: var(--bg-subtle);
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.content-table tr:last-child td {
  border-bottom: none;
}

.article-faq-box {
  margin-top: 42px;
  padding: 26px;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-xs);
}

.article-faq-box h3 {
  margin-top: 0;
  margin-bottom: 18px;
}

.article-faq-item {
  margin-bottom: 18px;
}

.article-faq-q {
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
  font-size: 0.98rem;
}

.article-faq-a {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.article-cta-box {
  margin-top: 46px;
  padding: 32px;
  background: linear-gradient(135deg, #090d16 0%, #1e293b 100%);
  color: #ffffff;
  border-radius: var(--radius-sm);
  text-align: center;
}

.article-cta-box h4 {
  font-size: 1.3rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 10px;
}

.article-cta-box p {
  font-size: 0.95rem;
  color: #94a3b8;
  margin-bottom: 22px;
}

.article-interlinks {
  margin-top: 38px;
  padding-top: 22px;
  border-top: 1px solid var(--border-line);
}

.article-interlinks h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.interlinks-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 0;
}

/* 法律页面卡片 */
.legal-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-sm);
  padding: 34px 26px;
  margin-top: 22px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

@media (min-width: 768px) {
  .legal-card {
    padding: 52px 44px;
  }
}

.legal-card h2 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-top: 34px;
  margin-bottom: 14px;
  letter-spacing: -0.015em;
}

.legal-card p {
  color: var(--text-secondary);
  margin-bottom: 18px;
  line-height: 1.72;
}

.legal-card ul {
  padding-left: 20px;
  margin-bottom: 20px;
  color: var(--text-secondary);
}

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