/* ==========================================================================
   赛博云 (saiboyun.click) - 光学石英浸没液冷 (Optical-Quartz Cryo-Cooling) 旗舰样式
   Palette: Abyssal Trench Black (#05080f), Cyber-Cyan (#00f5d4), Neon-Violet (#8b5cf6)
   Strictly Zero Heavy Frameworks, Pure Native CSS & Instant Performance
   ========================================================================== */

/* ---------------- 1. 颜色与设计令牌 (CSS Custom Variables) ---------------- */
:root {
  /* 品牌核心色调 - 液冷深海青与霓虹电紫 */
  --cyan-core: #00f5d4;
  --cyan-glow: rgba(0, 245, 212, 0.45);
  --cyan-subtle: rgba(0, 245, 212, 0.12);
  --violet-core: #8b5cf6;
  --violet-glow: rgba(139, 92, 246, 0.45);
  --violet-subtle: rgba(139, 92, 246, 0.14);
  --emerald-live: #10b981;
  --amber-gold: #f59e0b;

  /* 默认白天模式 (Optical Quartz Light Mode) */
  --bg-abyss: #f4f7fb;
  --bg-surface: #ffffff;
  --bg-surface-trans: rgba(255, 255, 255, 0.82);
  --bg-card: rgba(255, 255, 255, 0.92);
  --bg-card-hover: rgba(255, 255, 255, 1);
  --bg-subtle: #ebf1f8;
  --border-quartz: rgba(15, 23, 42, 0.1);
  --border-quartz-hover: rgba(0, 245, 212, 0.7);
  --border-glow: 0 0 20px rgba(0, 180, 160, 0.2);

  --text-pure: #090e17;
  --text-main: #1e293b;
  --text-secondary: #475569;
  --text-muted: #8492a6;

  --hero-bg: radial-gradient(circle at 75% 20%, rgba(0, 245, 212, 0.1) 0%, rgba(139, 92, 246, 0.08) 35%, transparent 70%),
             radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.08) 0%, transparent 60%);
  --quartz-cube-bg: linear-gradient(145deg, rgba(255, 255, 255, 0.9), rgba(240, 246, 255, 0.7));
  --quartz-bezel-shadow: 0 20px 45px rgba(15, 23, 42, 0.12), inset 0 0 25px rgba(0, 245, 212, 0.15);
  --tank-liquid-glow: rgba(0, 245, 212, 0.08);

  --btn-gradient: linear-gradient(135deg, #0284c7 0%, #00b4a0 100%);
  --btn-gradient-hover: linear-gradient(135deg, #0369a1 0%, #059669 100%);
  --btn-shadow: 0 6px 20px rgba(0, 180, 160, 0.28);
}

/* 深渊黑夜模式 (Abyssal Trench Cryo-Chamber Dark Mode) */
[data-theme="dark"] {
  --bg-abyss: #05080f;
  --bg-surface: #0a0f1d;
  --bg-surface-trans: rgba(10, 15, 29, 0.85);
  --bg-card: rgba(13, 20, 38, 0.75);
  --bg-card-hover: rgba(16, 25, 48, 0.92);
  --bg-subtle: #0f172a;
  --border-quartz: rgba(0, 245, 212, 0.18);
  --border-quartz-hover: rgba(0, 245, 212, 0.85);
  --border-glow: 0 0 28px rgba(0, 245, 212, 0.35);

  --text-pure: #ffffff;
  --text-main: #f0f6fc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --hero-bg: radial-gradient(circle at 75% 25%, rgba(0, 245, 212, 0.16) 0%, rgba(139, 92, 246, 0.14) 38%, transparent 75%),
             radial-gradient(circle at 15% 70%, rgba(14, 165, 233, 0.12) 0%, transparent 60%);
  --quartz-cube-bg: linear-gradient(145deg, rgba(13, 22, 42, 0.88), rgba(7, 12, 24, 0.94));
  --quartz-bezel-shadow: 0 25px 60px rgba(0, 0, 0, 0.85), inset 0 0 35px rgba(0, 245, 212, 0.22);
  --tank-liquid-glow: rgba(0, 245, 212, 0.18);

  --btn-gradient: linear-gradient(135deg, #00f5d4 0%, #8b5cf6 100%);
  --btn-gradient-hover: linear-gradient(135deg, #05e0c4 0%, #7c3aed 100%);
  --btn-shadow: 0 8px 30px rgba(0, 245, 212, 0.4);
}

/* ---------------- 2. 全局基础重置与排版 ---------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  scroll-behavior: smooth;
  scroll-padding-top: 86px; /* 为吸顶导航预留平滑滚动偏移量 */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-abyss);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.4s cubic-bezier(0.16, 1, 0.3, 1), color 0.4s ease;
  overflow-x: hidden;
  position: relative;
}

/* 细微科技网格纹理底色 */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(to right, rgba(0, 245, 212, 0.02) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 245, 212, 0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.25s ease;
}

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

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

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.section {
  padding: 88px 0;
  position: relative;
  z-index: 1;
}

.section-title-wrap {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 56px;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  background: var(--cyan-subtle);
  color: #00b4a0;
  border: 1px solid var(--border-quartz);
  margin-bottom: 18px;
  letter-spacing: 0.5px;
  box-shadow: 0 2px 10px rgba(0, 245, 212, 0.12);
}

[data-theme="dark"] .badge-tag {
  color: var(--cyan-core);
  border-color: rgba(0, 245, 212, 0.35);
  box-shadow: 0 0 16px rgba(0, 245, 212, 0.25);
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan-core);
  box-shadow: 0 0 10px var(--cyan-core);
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.3); }
}

.section-title {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-pure);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 1.08rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ---------------- 3. 页眉导航目录 (Header & Nav) ---------------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-surface-trans);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-quartz);
  transition: all 0.35s ease;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--text-pure);
  letter-spacing: -0.3px;
}

.logo-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--btn-gradient);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(0, 245, 212, 0.3);
}

.logo-text span {
  background: linear-gradient(135deg, var(--text-pure) 30%, var(--cyan-core) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .logo-text span {
  background: linear-gradient(135deg, #090e17 30%, #009985 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-badge {
  font-size: 0.68rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--bg-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--border-quartz);
  margin-left: 6px;
  vertical-align: middle;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
}

.nav-link {
  font-size: 0.93rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.25s ease;
  position: relative;
  padding: 8px 10px;
  border-radius: 8px;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-pure);
  background: var(--cyan-subtle);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 20%;
  width: 60%;
  height: 2px;
  background: var(--cyan-core);
  box-shadow: 0 0 8px var(--cyan-core);
  border-radius: 2px;
}

/* 推荐资讯特殊入口标识 */
.nav-badge-news {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.18), rgba(0, 245, 212, 0.18));
  border: 1px solid rgba(139, 92, 246, 0.4);
  border-radius: 999px;
  color: var(--text-pure) !important;
  font-weight: 600;
  font-size: 0.88rem;
}

.nav-badge-news:hover {
  border-color: var(--cyan-core);
  box-shadow: 0 0 12px rgba(0, 245, 212, 0.3);
  transform: translateY(-1px);
}

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

/* ---------------- 4. 精致专业透明昼夜切换按钮 ---------------- */
.theme-toggle-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(125, 140, 160, 0.08);
  border: 1px solid var(--border-quartz);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: var(--text-secondary);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.theme-toggle-btn:hover {
  color: var(--text-pure);
  border-color: var(--cyan-core);
  box-shadow: 0 0 16px rgba(0, 245, 212, 0.25);
  transform: rotate(20deg);
}

.theme-icon-sun,
.theme-icon-moon {
  width: 20px;
  height: 20px;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.35s ease;
  position: absolute;
}

/* 默认白天模式：月亮图标就位 */
:root:not([data-theme="dark"]) .theme-icon-sun {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}
:root:not([data-theme="dark"]) .theme-icon-moon {
  opacity: 1;
  transform: rotate(0) scale(1);
}

/* 黑夜模式：太阳图标就位 */
[data-theme="dark"] .theme-icon-sun {
  opacity: 1;
  transform: rotate(0) scale(1);
}
[data-theme="dark"] .theme-icon-moon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}

.mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  background: rgba(125, 140, 160, 0.08);
  border: 1px solid var(--border-quartz);
  color: var(--text-pure);
}

/* ---------------- 5. 按钮与操作规范 (CTA Buttons) ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
  user-select: none;
  position: relative;
  overflow: hidden;
}

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

[data-theme="dark"] .btn-primary {
  color: #05080f !important;
  font-weight: 800;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(0, 245, 212, 0.55);
}

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

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-pure);
  border: 1px solid var(--border-quartz);
  backdrop-filter: blur(12px);
}

.btn-secondary:hover {
  border-color: var(--cyan-core);
  box-shadow: 0 6px 20px rgba(0, 245, 212, 0.2);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 15px 32px;
  font-size: 1.05rem;
  border-radius: 14px;
}

.btn-block {
  width: 100%;
}

/* ---------------- 6. 主视觉区 (Hero: Refractive Cryo-Core Layout) ---------------- */
.hero-section {
  padding: 80px 0 70px;
  background-image: var(--hero-bg);
  background-repeat: no-repeat;
  background-position: center top;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

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

/* 左侧自愈网络徽章 */
.hero-live-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--cyan-subtle);
  border: 1px solid var(--border-quartz);
  font-size: 0.86rem;
  font-weight: 700;
  color: #00b4a0;
  margin-bottom: 22px;
  box-shadow: 0 2px 14px rgba(0, 245, 212, 0.15);
}

[data-theme="dark"] .hero-live-badge {
  color: var(--cyan-core);
  box-shadow: 0 0 20px rgba(0, 245, 212, 0.25);
}

/* 严格大标题包含当前品牌名 */
.hero-headline {
  font-size: 3.3rem;
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -1.2px;
  color: var(--text-pure);
  margin-bottom: 20px;
}

.hero-headline .brand-highlight {
  background: linear-gradient(135deg, var(--cyan-core) 0%, var(--violet-core) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  text-shadow: 0 0 30px rgba(0, 245, 212, 0.3);
}

[data-theme="light"] .hero-headline .brand-highlight {
  background: linear-gradient(135deg, #0284c7 0%, #7c3aed 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-headline .hero-subline {
  display: block;
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--text-pure);
  opacity: 0.95;
  margin-top: 6px;
}

.hero-intro {
  font-size: 1.12rem;
  color: var(--text-secondary);
  line-height: 1.78;
  margin-bottom: 30px;
  max-width: 580px;
}

/* 等宽 2000Mbps 与指标规格条 */
.hero-specs-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.spec-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-quartz);
  font-family: "JetBrains Mono", Consolas, "Courier New", monospace;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-pure);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
}

.spec-pill .speed-val {
  color: var(--cyan-core);
  font-size: 1.15rem;
  font-weight: 900;
}

[data-theme="light"] .spec-pill .speed-val {
  color: #009985;
}

.hero-cta-wrap {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

/* 底部基准准星指示器 (Datum Crosshairs) */
.hero-datum-crosshairs {
  display: flex;
  align-items: center;
  gap: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border-quartz);
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.84rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.crosshair-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.crosshair-item strong {
  color: var(--text-pure);
}

.ping-readout {
  color: var(--emerald-live);
  font-weight: 800;
  padding: 2px 8px;
  background: rgba(16, 185, 129, 0.12);
  border-radius: 6px;
  border: 1px solid rgba(16, 185, 129, 0.3);
  transition: all 0.3s ease;
}

/* ---------------- 7. 右侧 3D 光学石英浸没液冷槽 (Optical Quartz Cryo-Tank) ---------------- */
.cryo-tank-container {
  perspective: 1200px;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.cryo-quartz-cube {
  position: relative;
  width: 100%;
  max-width: 440px;
  height: 480px;
  border-radius: 28px;
  background: var(--quartz-cube-bg);
  border: 2px solid var(--border-quartz);
  box-shadow: var(--quartz-bezel-shadow);
  transform-style: preserve-3d;
  transition: transform 0.2s cubic-bezier(0.1, 0.9, 0.2, 1), box-shadow 0.3s ease, border-color 0.3s ease;
  overflow: hidden;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* 色散色度晶体边缘光效 */
.cryo-quartz-cube::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan-core) 0%, var(--violet-core) 100%);
  opacity: 0.9;
  z-index: 10;
}

.cryo-quartz-cube:hover {
  border-color: var(--cyan-core);
  box-shadow: 0 30px 80px rgba(0, 245, 212, 0.35), inset 0 0 40px rgba(139, 92, 246, 0.25);
}

/* 液冷回路与底层电路蚀刻纹理 */
.circuit-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.7;
  pointer-events: none;
}

/* 光学光纤导管动画 */
.fiber-conduit {
  stroke-dasharray: 8 16;
  animation: conduit-flow 2.5s linear infinite;
}

@keyframes conduit-flow {
  from { stroke-dashoffset: 48; }
  to { stroke-dashoffset: 0; }
}

/* 上浮微气泡 (Rising Micro-Bubbles in Coolant) */
.coolant-bubbles {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
}

.bubble {
  position: absolute;
  bottom: -20px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.8), rgba(0, 245, 212, 0.4) 60%, transparent 80%);
  box-shadow: 0 0 8px rgba(0, 245, 212, 0.6);
  animation: bubble-rise 6s infinite ease-in;
}

.bubble:nth-child(1) { left: 15%; width: 10px; height: 10px; animation-duration: 5.2s; animation-delay: 0.2s; }
.bubble:nth-child(2) { left: 35%; width: 6px; height: 6px; animation-duration: 4.5s; animation-delay: 1.1s; }
.bubble:nth-child(3) { left: 55%; width: 14px; height: 14px; animation-duration: 6.8s; animation-delay: 0.5s; }
.bubble:nth-child(4) { left: 75%; width: 8px; height: 8px; animation-duration: 5.8s; animation-delay: 2.2s; }
.bubble:nth-child(5) { left: 88%; width: 12px; height: 12px; animation-duration: 7.2s; animation-delay: 1.6s; }

/* 悬停加速气泡对流 */
.accelerate-bubbles .bubble {
  animation-duration: 2.2s !important;
}

/* 石英核心内部监视面板 */
.cube-hud-content {
  position: relative;
  z-index: 5;
  padding: 30px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.hud-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.hud-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.78rem;
  letter-spacing: 1px;
  color: var(--cyan-core);
  text-transform: uppercase;
}

[data-theme="light"] .hud-status {
  color: #009985;
}

.hud-temp {
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hud-center-core {
  text-align: center;
  margin: auto 0;
}

.core-crystal {
  width: 90px;
  height: 90px;
  margin: 0 auto 16px;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(0, 245, 212, 0.25), rgba(139, 92, 246, 0.35));
  border: 1px solid var(--cyan-core);
  box-shadow: 0 0 35px rgba(0, 245, 212, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  animation: crystal-pulse 4s ease-in-out infinite;
}

@keyframes crystal-pulse {
  0%, 100% { transform: scale(1) rotate(0deg); box-shadow: 0 0 35px rgba(0, 245, 212, 0.35); }
  50% { transform: scale(1.05) rotate(5deg); box-shadow: 0 0 50px rgba(139, 92, 246, 0.5); }
}

.core-title {
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--text-pure);
  margin-bottom: 4px;
}

.core-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-family: "JetBrains Mono", Consolas, monospace;
}

.hud-bottom-telemetry {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding-top: 16px;
  border-top: 1px solid var(--border-quartz);
  font-family: "JetBrains Mono", Consolas, monospace;
  text-align: center;
}

.hud-metric-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  display: block;
}

.hud-metric-value {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-pure);
}

/* ---------------- 8. 产品核心优势介绍 (3个图文卡片) ---------------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-quartz);
  border-radius: 22px;
  padding: 36px 30px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(12px);
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan-core), var(--violet-core));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-quartz-hover);
  box-shadow: 0 16px 40px rgba(0, 245, 212, 0.15);
}

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

.feature-icon-box {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  color: #ffffff;
}

.icon-cyan-grad { background: linear-gradient(135deg, #00b4a0, #0284c7); }
.icon-violet-grad { background: linear-gradient(135deg, #7c3aed, #a855f7); }
.icon-emerald-grad { background: linear-gradient(135deg, #059669, #10b981); }

.feature-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-pure);
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 22px;
  flex-grow: 1;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-top: 1px solid var(--border-quartz);
  padding-top: 20px;
}

.feature-list li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.check-icon {
  color: var(--emerald-live);
  flex-shrink: 0;
}

/* ---------------- 9. 流媒体图卡 & AI支持图卡 (双大专题卡片) ---------------- */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.showcase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-quartz);
  border-radius: 24px;
  padding: 40px 34px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(14px);
}

.showcase-card:hover {
  transform: translateY(-5px);
  border-color: var(--cyan-core);
  box-shadow: 0 16px 45px rgba(0, 245, 212, 0.18);
}

.showcase-header {
  margin-bottom: 24px;
}

.showcase-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-stream {
  background: rgba(244, 63, 94, 0.12);
  color: #f43f5e;
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.badge-ai {
  background: rgba(139, 92, 246, 0.14);
  color: #a78bfa;
  border: 1px solid rgba(139, 92, 246, 0.35);
}

.showcase-title {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-pure);
  margin-bottom: 12px;
}

.showcase-desc {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.72;
}

.showcase-tags-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 26px 0;
}

.service-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 12px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-quartz);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-pure);
  transition: all 0.25s ease;
}

.service-pill:hover {
  border-color: var(--cyan-core);
  transform: translateX(4px);
}

.pill-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--emerald-live);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
  flex-shrink: 0;
}

.showcase-highlights {
  background: var(--bg-subtle);
  border-radius: 14px;
  padding: 18px 20px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-left: 3px solid var(--cyan-core);
}

/* ---------------- 10. 清晰的套餐价格对比表 (参考网上真实套餐价格) ---------------- */
.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-quartz);
  border-radius: 24px;
  padding: 38px 30px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.04);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  backdrop-filter: blur(14px);
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(0, 245, 212, 0.16);
}

/* 推荐套餐高亮 (专业版 - 尊享季付 HOT) */
.pricing-card.popular {
  border: 2px solid var(--cyan-core);
  box-shadow: 0 16px 45px rgba(0, 245, 212, 0.25);
  transform: scale(1.02);
}

.pricing-card.popular:hover {
  transform: scale(1.02) translateY(-8px);
}

.popular-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--btn-gradient);
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 5px 18px;
  border-radius: 999px;
  box-shadow: 0 4px 14px rgba(0, 245, 212, 0.4);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

[data-theme="dark"] .popular-badge {
  color: #05080f;
}

.pricing-header {
  text-align: center;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-quartz);
  margin-bottom: 24px;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: var(--text-pure);
}

.plan-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: #00b4a0;
}

[data-theme="dark"] .currency {
  color: var(--cyan-core);
}

.amount {
  font-size: 3.4rem;
  font-weight: 900;
  color: var(--text-pure);
  line-height: 1;
  font-family: "JetBrains Mono", Consolas, sans-serif;
}

.period {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.plan-subprice {
  font-size: 0.84rem;
  color: var(--emerald-live);
  font-weight: 600;
  margin-top: 8px;
}

.plan-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
  flex-grow: 1;
}

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

.plan-features li strong {
  color: var(--text-pure);
}

/* ---------------- 11. 用户评价 (Strictly Zero Generic AI Avatars) ---------------- */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-quartz);
  border-radius: 20px;
  padding: 30px 26px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.3s ease;
  backdrop-filter: blur(12px);
}

.review-card:hover {
  transform: translateY(-5px);
  border-color: var(--cyan-core);
  box-shadow: 0 16px 36px rgba(0, 245, 212, 0.15);
}

.review-stars {
  color: #f59e0b;
  display: flex;
  gap: 4px;
  margin-bottom: 14px;
  font-size: 1.1rem;
}

.review-quote {
  font-size: 0.95rem;
  line-height: 1.72;
  color: var(--text-secondary);
  margin-bottom: 22px;
}

/* 极具质感的非通用AI头像徽章 */
.review-author {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--border-quartz);
  padding-top: 16px;
}

.author-token-badge {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--cyan-subtle), var(--violet-subtle));
  border: 1px solid var(--border-quartz);
  color: var(--text-pure);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "JetBrains Mono", Consolas, monospace;
  font-weight: 800;
  font-size: 0.9rem;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.author-info h4 {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--text-pure);
  display: flex;
  align-items: center;
  gap: 6px;
}

.author-tag {
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(16, 185, 129, 0.12);
  color: var(--emerald-live);
  font-weight: 600;
}

.author-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---------------- 12. 常见问题解答 (FAQ) ---------------- */
.faq-wrap {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-quartz);
  border-radius: 18px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.03);
  overflow: hidden;
  transition: all 0.3s ease;
  backdrop-filter: blur(12px);
}

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

.faq-question {
  width: 100%;
  padding: 22px 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-pure);
  text-align: left;
}

.faq-arrow {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-subtle);
  color: var(--text-secondary);
  transition: transform 0.35s ease, background 0.3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
  background: var(--cyan-core);
  color: #05080f;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-answer-inner {
  padding: 0 26px 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
  border-top: 1px solid var(--border-quartz);
  padding-top: 18px;
}

/* ---------------- 13. 转化号召横幅 ---------------- */
.cta-banner-section {
  padding: 70px 0;
}

.cta-banner {
  background: linear-gradient(135deg, rgba(13, 22, 42, 0.95), rgba(7, 12, 24, 0.98));
  border: 1px solid var(--cyan-core);
  border-radius: 28px;
  padding: 60px 40px;
  text-align: center;
  color: #ffffff;
  box-shadow: 0 20px 60px rgba(0, 245, 212, 0.22);
  position: relative;
  overflow: hidden;
}

[data-theme="light"] .cta-banner {
  background: linear-gradient(135deg, #090e17 0%, #1e293b 100%);
}

.cta-banner h2 {
  font-size: 2.45rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 16px;
  color: #ffffff;
}

.cta-banner p {
  font-size: 1.15rem;
  color: #cbd5e1;
  max-width: 660px;
  margin: 0 auto 34px;
  line-height: 1.7;
}

/* ---------------- 14. 页脚 (严格只保留四个标题) ---------------- */
.footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-quartz);
  padding: 50px 0 36px;
  transition: all 0.35s ease;
  margin-top: auto;
  position: relative;
  z-index: 2;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  margin-bottom: 26px;
  flex-wrap: wrap;
}

.footer-link {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-pure);
  padding: 8px 14px;
  border-radius: 10px;
  transition: all 0.25s ease;
}

.footer-link:hover {
  color: var(--cyan-core);
  background: var(--cyan-subtle);
}

[data-theme="light"] .footer-link:hover {
  color: #009985;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid var(--border-quartz);
  padding-top: 24px;
  font-size: 0.86rem;
  color: var(--text-muted);
}

.footer-bottom p {
  margin-bottom: 6px;
}

/* ---------------- 15. 推荐资讯专页与内容页排版 ---------------- */
.insights-hero {
  padding: 60px 0 40px;
  text-align: center;
}

.insights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  margin-bottom: 40px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-quartz);
  border-radius: 22px;
  padding: 32px 28px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.35s ease;
  backdrop-filter: blur(12px);
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: var(--cyan-core);
  box-shadow: 0 16px 40px rgba(0, 245, 212, 0.16);
}

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

.article-tag {
  padding: 3px 10px;
  border-radius: 6px;
  background: var(--cyan-subtle);
  color: #00b4a0;
  font-weight: 700;
}

[data-theme="dark"] .article-tag {
  color: var(--cyan-core);
}

.article-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-pure);
  margin-bottom: 12px;
  line-height: 1.4;
}

.article-excerpt {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--cyan-core);
}

[data-theme="light"] .article-read-more {
  color: #009985;
}

/* ---------------- 16. 移动端响应式 (@media) ---------------- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-left {
    text-align: center;
  }
  .hero-intro {
    margin: 0 auto 30px;
  }
  .hero-specs-row, .hero-cta-wrap, .hero-datum-crosshairs {
    justify-content: center;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .showcase-grid {
    grid-template-columns: 1fr;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .pricing-card.popular {
    transform: none;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .insights-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }
  .hero-section {
    padding: 50px 0 36px;
  }
  .hero-headline {
    font-size: 2.3rem;
  }
  .hero-headline .hero-subline {
    font-size: 1.6rem;
  }
  .mobile-toggle {
    display: flex;
  }
  .nav-menu {
    position: absolute;
    top: 74px;
    left: 0;
    width: 100%;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-quartz);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    align-items: flex-start;
    display: none;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  }
  .nav-menu.open {
    display: flex;
  }
  .header-actions .btn {
    display: none;
  }
  .hero-cta-wrap {
    flex-direction: column;
    width: 100%;
  }
  .hero-cta-wrap .btn {
    width: 100%;
    min-height: 52px;
  }
  .showcase-tags-grid {
    grid-template-columns: 1fr;
  }
  .footer-nav {
    flex-direction: column;
    gap: 14px;
  }
  .cryo-quartz-cube {
    max-width: 100%;
    height: 400px;
  }
}

/* ---------------- 17. 深度 SEO 文章排版规范 (Long-Form Article Styles) ---------------- */
.article-view-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

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

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

.article-main-header {
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-quartz);
}

.article-main-title {
  font-size: 2.25rem;
  font-weight: 900;
  color: var(--text-pure);
  line-height: 1.32;
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.article-meta-row span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

/* 文章目录 (Table of Contents) */
.toc-box {
  background: var(--bg-card);
  border: 1px solid var(--border-quartz);
  border-radius: 18px;
  padding: 24px 28px;
  margin-bottom: 38px;
  backdrop-filter: blur(14px);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.04);
}

.toc-title {
  font-size: 1.08rem;
  font-weight: 800;
  color: var(--text-pure);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-left: 4px;
}

.toc-list a {
  color: var(--text-secondary);
  font-size: 0.94rem;
  font-weight: 500;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.toc-list a:hover {
  color: var(--cyan-core);
  transform: translateX(4px);
}

/* 正文深度排版 */
.article-body {
  font-size: 1.05rem;
  line-height: 1.82;
  color: var(--text-secondary);
}

.article-body h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-pure);
  margin: 44px 0 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-quartz);
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-pure);
  margin: 30px 0 14px;
}

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

.article-body strong {
  color: var(--text-pure);
  font-weight: 700;
}

.article-body ul, .article-body ol {
  padding-left: 24px;
  margin-bottom: 22px;
}

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

/* 比较数据表格 */
.table-wrapper {
  overflow-x: auto;
  margin: 28px 0;
  border-radius: 14px;
  border: 1px solid var(--border-quartz);
}

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

.data-table th, .data-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-quartz);
}

.data-table th {
  background: var(--bg-subtle);
  color: var(--text-pure);
  font-weight: 700;
  white-space: nowrap;
}

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

.data-table td strong {
  color: var(--text-pure);
}

/* 提示与高亮块 */
.alert-box {
  background: var(--bg-subtle);
  border-left: 4px solid var(--cyan-core);
  border-radius: 10px;
  padding: 20px 24px;
  margin: 26px 0;
  font-size: 0.96rem;
  color: var(--text-main);
  line-height: 1.7;
}

.alert-box.alert-success {
  border-left-color: var(--emerald-live);
  background: rgba(16, 185, 129, 0.08);
}

/* 代码与配置块 */
.code-box {
  background: #090e17;
  color: #38bdf8;
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.88rem;
  padding: 18px 22px;
  border-radius: 12px;
  border: 1px solid rgba(0, 245, 212, 0.2);
  margin: 24px 0;
  overflow-x: auto;
  line-height: 1.6;
}

/* 文章内置 CTA 卡片 */
.article-inline-cta {
  background: linear-gradient(135deg, rgba(13, 22, 42, 0.95), rgba(7, 12, 24, 0.98));
  border: 1px solid var(--cyan-core);
  border-radius: 20px;
  padding: 36px 32px;
  margin: 44px 0;
  text-align: center;
  color: #ffffff;
  box-shadow: 0 12px 40px rgba(0, 245, 212, 0.18);
}

[data-theme="light"] .article-inline-cta {
  background: linear-gradient(135deg, #090e17, #1e293b);
}

.article-inline-cta h3 {
  font-size: 1.55rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
}

.article-inline-cta p {
  font-size: 1rem;
  color: #cbd5e1;
  max-width: 600px;
  margin: 0 auto 24px;
  line-height: 1.65;
}

/* 文章 FAQ */
.article-faq-wrap {
  margin: 44px 0;
  padding-top: 30px;
  border-top: 1px solid var(--border-quartz);
}

.article-faq-wrap h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-pure);
  margin-bottom: 24px;
}

/* 相关阅读网格 (Related Readings) */
.related-reads-section {
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid var(--border-quartz);
}

.related-reads-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-pure);
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 8px;
}

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

.related-item {
  background: var(--bg-card);
  border: 1px solid var(--border-quartz);
  border-radius: 16px;
  padding: 22px 20px;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.related-item:hover {
  transform: translateY(-4px);
  border-color: var(--cyan-core);
  box-shadow: 0 10px 26px rgba(0, 245, 212, 0.14);
}

.related-item h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-pure);
  margin-bottom: 10px;
  line-height: 1.45;
}

.related-item p {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
  flex-grow: 1;
}

.related-item-link {
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--cyan-core);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

@media (max-width: 768px) {
  .article-view-container {
    padding: 30px 18px 60px;
  }
  .article-main-title {
    font-size: 1.75rem;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .toc-box {
    padding: 20px 18px;
  }
}