/* ==========================================================================
   九云官网 (9yun.click) — Arctic SaaS · 极地蓝白 样式系统
   ========================================================================== */

:root {
  /* Arctic SaaS Core Palette */
  --bg-pure: #ffffff;
  --bg-ice: #f4f9ff;
  --bg-ice-soft: #ebf4ff;
  --bg-ice-deep: #e0f2fe;
  --bg-glass: rgba(255, 255, 255, 0.86);
  --bg-glass-strong: rgba(255, 255, 255, 0.94);

  /* Text Hierarchy */
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-faint: #94a3b8;

  /* Glacial Blue & Cobalt Accents */
  --accent-sky: #0284c7;
  --accent-cyan: #0ea5e9;
  --accent-cobalt: #2563eb;
  --accent-indigo: #4f46e5;
  --accent-emerald: #059669;
  --accent-emerald-bg: #ecfdf5;
  --accent-amber: #d97706;

  /* Borders & Shadows */
  --border-subtle: #e2e8f0;
  --border-ice: rgba(147, 197, 253, 0.55);
  --border-ice-strong: rgba(14, 165, 233, 0.45);
  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 4px 14px -2px rgba(14, 116, 144, 0.07), 0 1px 3px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 12px 32px -6px rgba(2, 132, 199, 0.12), 0 4px 12px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 24px 54px -12px rgba(37, 99, 235, 0.16), 0 8px 20px -6px rgba(15, 23, 42, 0.06);
  --shadow-console: 0 28px 65px -15px rgba(14, 116, 144, 0.20), 0 0 0 1px rgba(186, 230, 253, 0.75);

  /* Radii & Spacing */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-pill: 9999px;
  --container-max: 1200px;

  /* Typography */
  --font-sans: "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  /* Transitions */
  --ease-arctic: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text-primary);
  background-color: var(--bg-pure);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
}

section[id],
.hero-console-wrap[id] {
  scroll-margin-top: 82px;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

.tabular-nums {
  font-variant-numeric: tabular-nums;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==========================================================================
   Arctic Ambient Backdrop Layers
   ========================================================================== */
.arctic-canvas {
  position: relative;
  background:
    radial-gradient(ellipse 75% 48% at 72% -8%, rgba(56, 189, 248, 0.16), transparent 62%),
    radial-gradient(ellipse 65% 42% at 15% 6%, rgba(37, 99, 235, 0.08), transparent 58%),
    linear-gradient(180deg, #ffffff 0%, #f8fbff 42%, #ffffff 100%);
}

.arctic-grid-bg {
  position: relative;
}

.arctic-grid-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(14, 165, 233, 0.11) 1px, transparent 1px);
  background-size: 26px 26px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55) 0%, rgba(0, 0, 0, 0.1) 68%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55) 0%, rgba(0, 0, 0, 0.1) 68%, transparent 100%);
  pointer-events: none;
  z-index: 0;
}

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

.section {
  padding: 84px 0;
  position: relative;
}

.section-ice {
  background: linear-gradient(180deg, #f5faff 0%, #edf5ff 55%, #f7fbff 100%);
  border-top: 1px solid rgba(186, 230, 253, 0.5);
  border-bottom: 1px solid rgba(186, 230, 253, 0.5);
}

.section-header {
  max-width: 720px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  background: rgba(224, 242, 254, 0.8);
  border: 1px solid rgba(125, 211, 252, 0.65);
  color: var(--accent-sky);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 14px;
}

.section-title {
  margin: 0 0 14px;
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.25;
  color: var(--text-primary);
}

.section-desc {
  margin: 0;
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* Text Gradient Accent */
.text-arctic {
  background: linear-gradient(135deg, #0284c7 0%, #2563eb 55%, #06b6d4 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.2;
  border: 1px solid transparent;
  transition: transform 0.22s var(--ease-arctic), box-shadow 0.22s var(--ease-arctic), background 0.22s ease, border-color 0.22s ease, color 0.22s ease;
  white-space: nowrap;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
}

.btn-sm {
  padding: 9px 16px;
  font-size: 0.875rem;
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7 0%, #2563eb 100%);
  color: #ffffff;
  box-shadow: 0 8px 22px -6px rgba(37, 99, 235, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.22);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px -6px rgba(37, 99, 235, 0.52), inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.92);
  color: var(--text-primary);
  border-color: rgba(148, 197, 255, 0.65);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
  background: #f0f7ff;
  border-color: var(--accent-cyan);
  color: var(--accent-sky);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 9px 14px;
}

.btn-ghost:hover {
  color: var(--accent-sky);
  background: rgba(224, 242, 254, 0.5);
}

/* ==========================================================================
   Top Sticky Horizontal Navigation (横向导航)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(18px) saturate(180%);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  border-bottom: 1px solid rgba(186, 230, 253, 0.55);
  transition: box-shadow 0.25s ease, background 0.25s ease;
}

.site-header.is-scrolled {
  background: var(--bg-glass-strong);
  box-shadow: 0 6px 24px -8px rgba(15, 23, 42, 0.08);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  height: 70px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
}

.brand-logo-wrap {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  background: #ffffff;
  border: 1px solid rgba(186, 230, 253, 0.85);
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.08);
  padding: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.brand-logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  mix-blend-mode: multiply;
  filter: brightness(1.02) contrast(1.04);
}

.brand-text-group {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-name {
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.brand-domain-badge {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--accent-sky);
  background: #e0f2fe;
  padding: 2px 7px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.02em;
}

.brand-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links > li {
  position: relative;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 13px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-sky);
  background: rgba(224, 242, 254, 0.72);
}

.nav-links > li > a.active {
  box-shadow: inset 0 -2px 0 rgba(2, 132, 199, 0.45);
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 248px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(18px);
  border: 1px solid var(--border-ice);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  padding: 8px;
  list-style: none;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
  z-index: 120;
}

.nav-item-dropdown:hover .nav-dropdown-menu,
.nav-item-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-menu a {
  display: flex;
  justify-content: space-between;
  width: 100%;
  padding: 9px 12px;
  border-radius: 10px;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.nav-dropdown-menu a:hover {
  background: #f0f9ff;
  color: var(--accent-sky);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.mobile-menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 11px;
  border: 1px solid var(--border-ice);
  background: #ffffff;
  color: var(--text-primary);
  align-items: center;
  justify-content: center;
}

.mobile-drawer {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-ice);
  box-shadow: var(--shadow-lg);
  padding: 18px 20px 24px;
  z-index: 99;
}

.mobile-drawer.is-open {
  display: block;
  animation: fadeSlideDown 0.24s var(--ease-arctic);
}

@keyframes fadeSlideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.mobile-nav-list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 6px;
}

.mobile-nav-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  font-weight: 600;
  color: var(--text-primary);
  background: #f8fbff;
  border: 1px solid rgba(226, 232, 240, 0.8);
}

.mobile-drawer-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

/* ==========================================================================
   Hero Section (左侧产品文案 → 右侧产品界面 + 控制台界面渐入)
   ========================================================================== */
.hero-section {
  padding: 58px 0 76px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 1.08fr);
  gap: 44px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 10px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(125, 211, 252, 0.7);
  box-shadow: 0 4px 16px -4px rgba(14, 165, 233, 0.16);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.live-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.55);
  animation: pulseDot 2.2s infinite;
  flex-shrink: 0;
}

@keyframes pulseDot {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.55); }
  70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-title {
  margin: 0 0 18px;
  font-size: clamp(2rem, 3.85vw, 3.15rem);
  font-weight: 850;
  line-height: 1.18;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.hero-subtitle {
  margin: 0 0 28px;
  font-size: 1.06rem;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 560px;
}

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

.hero-trust-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  padding-top: 22px;
  border-top: 1px solid rgba(203, 213, 225, 0.65);
}

.hero-stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hero-stat-val {
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--accent-sky);
  line-height: 1.2;
}

.hero-stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ==========================================================================
   Right Hero: Arctic SaaS Product Console UI (动效：控制台界面渐入)
   ========================================================================== */
.hero-console-wrap {
  position: relative;
}

.console-aura {
  position: absolute;
  inset: -26px -22px;
  background:
    radial-gradient(circle at 75% 22%, rgba(56, 189, 248, 0.28), transparent 55%),
    radial-gradient(circle at 22% 80%, rgba(37, 99, 235, 0.18), transparent 55%);
  filter: blur(28px);
  z-index: 0;
  pointer-events: none;
}

.console-window {
  position: relative;
  z-index: 1;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(20px);
  border-radius: 20px;
  border: 1px solid rgba(147, 197, 253, 0.7);
  box-shadow: var(--shadow-console);
  overflow: hidden;
  /* 动效：控制台界面渐入 */
  opacity: 0;
  transform: translateY(22px) scale(0.985);
  animation: consoleFadeIn 0.85s var(--ease-arctic) 0.12s forwards;
}

@keyframes consoleFadeIn {
  0% {
    opacity: 0;
    transform: translateY(24px) scale(0.982);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.console-window.is-highlighted {
  box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.32), var(--shadow-console);
  border-color: var(--accent-cyan);
  transition: box-shadow 0.35s ease, border-color 0.35s ease;
}

.console-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 18px;
  background: linear-gradient(180deg, #f8fbff 0%, #f1f7ff 100%);
  border-bottom: 1px solid rgba(203, 213, 225, 0.6);
}

.window-dots {
  display: flex;
  align-items: center;
  gap: 6px;
}

.window-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-red { background: #fca5a5; }
.dot-yellow { background: #fcd34d; }
.dot-green { background: #6ee7b7; }

.console-title-pill {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: #ffffff;
  border: 1px solid rgba(203, 213, 225, 0.75);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.console-status-badge {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent-emerald);
  background: var(--accent-emerald-bg);
  border: 1px solid rgba(16, 185, 129, 0.25);
  padding: 3px 9px;
  border-radius: var(--radius-pill);
}

.console-body {
  padding: 18px;
  display: grid;
  gap: 14px;
}

/* Account & Quota Card inside Console */
.console-quota-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: center;
  padding: 14px 16px;
  border-radius: 14px;
  background: linear-gradient(135deg, #f0f8ff 0%, #e6f2ff 100%);
  border: 1px solid rgba(147, 197, 253, 0.55);
}

.quota-plan-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.quota-tag {
  font-size: 0.7rem;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, #0284c7, #2563eb);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
}

.quota-progress-track {
  width: 100%;
  height: 7px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(186, 230, 253, 0.7);
  overflow: hidden;
  margin-bottom: 5px;
}

.quota-progress-bar {
  width: 78%;
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, #0ea5e9, #2563eb);
}

.quota-meta {
  font-size: 0.74rem;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.console-ping-btn {
  padding: 8px 13px;
  border-radius: 10px;
  border: 1px solid rgba(14, 165, 233, 0.38);
  background: #ffffff;
  color: var(--accent-sky);
  font-size: 0.78rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: var(--shadow-xs);
  transition: all 0.2s ease;
}

.console-ping-btn:hover {
  background: var(--accent-sky);
  color: #ffffff;
}

/* Region Tabs inside Console */
.console-tabs-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.console-filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.console-pill {
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-subtle);
  background: #ffffff;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  transition: all 0.18s ease;
}

.console-pill.is-active,
.console-pill:hover {
  background: #e0f2fe;
  border-color: rgba(14, 165, 233, 0.45);
  color: var(--accent-sky);
}

/* Node Rows inside Console */
.console-node-list {
  display: grid;
  gap: 8px;
}

.console-node-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  background: #ffffff;
  border: 1px solid #e8f0f8;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.console-node-row:hover {
  border-color: rgba(56, 189, 248, 0.65);
  box-shadow: 0 4px 12px -4px rgba(2, 132, 199, 0.12);
  transform: translateX(2px);
}

.console-node-row.is-hidden {
  display: none;
}

.node-info {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.node-flag {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: #f0f7ff;
  border: 1px solid #dbeafe;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.74rem;
  font-weight: 800;
  color: var(--accent-cobalt);
  flex-shrink: 0;
}

.node-title-wrap {
  min-width: 0;
}

.node-name {
  font-size: 0.83rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.node-tags {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.node-load-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
}

.node-load-bar {
  width: 44px;
  height: 5px;
  border-radius: 99px;
  background: #e2e8f0;
  overflow: hidden;
}

.node-load-fill {
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, #10b981, #0ea5e9);
}

.node-ping {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--accent-emerald);
  background: var(--accent-emerald-bg);
  padding: 3px 8px;
  border-radius: 8px;
  min-width: 54px;
  text-align: center;
}

.node-ping.is-medium {
  color: #0284c7;
  background: #e0f2fe;
}

/* Quick Client Sync Strip */
.console-client-box {
  background: #f8fbff;
  border: 1px solid #e2ecf7;
  border-radius: 12px;
  padding: 11px 13px;
}

.client-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 9px;
}

.client-tab {
  border: none;
  background: transparent;
  padding: 4px 9px;
  border-radius: 7px;
  font-size: 0.73rem;
  font-weight: 600;
  color: var(--text-muted);
}

.client-tab.is-active {
  background: #ffffff;
  color: var(--accent-sky);
  box-shadow: 0 1px 4px rgba(15, 23, 42, 0.08);
}

.client-url-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background: #ffffff;
  border: 1px solid #dbeafe;
  border-radius: 9px;
  padding: 7px 10px;
}

.client-url-code {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.client-copy-btn {
  border: none;
  background: #e0f2fe;
  color: var(--accent-sky);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  flex-shrink: 0;
}

.client-copy-btn:hover {
  background: #bae6fd;
}

.console-footer-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.72rem;
  color: var(--text-muted);
  padding-top: 2px;
}

/* ==========================================================================
   GEO Entity Summary Strip (权威品牌速览)
   ========================================================================== */
.entity-strip {
  padding: 26px 0;
  background: #ffffff;
  border-top: 1px solid #eef4fb;
  border-bottom: 1px solid #eef4fb;
}

.entity-box {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 24px;
  align-items: center;
  padding: 22px 26px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #f8fbff 0%, #eff6ff 100%);
  border: 1px solid var(--border-ice);
}

.entity-title {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-primary);
}

.entity-summary {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.entity-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.entity-fact-pill {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(186, 230, 253, 0.7);
  border-radius: 11px;
  padding: 10px 12px;
}

.entity-fact-label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
}

.entity-fact-val {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* ==========================================================================
   Feature Cards Grid (功能卡片)
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.feature-card {
  background: #ffffff;
  border: 1px solid rgba(203, 213, 225, 0.65);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-xs);
  transition: transform 0.25s var(--ease-arctic), box-shadow 0.25s var(--ease-arctic), border-color 0.25s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #38bdf8, #2563eb);
  opacity: 0;
  transition: opacity 0.25s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.65);
  box-shadow: var(--shadow-md);
}

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

.feature-icon {
  width: 46px;
  height: 46px;
  border-radius: 13px;
  background: linear-gradient(135deg, #e0f2fe 0%, #dbeafe 100%);
  border: 1px solid rgba(125, 211, 252, 0.55);
  color: var(--accent-sky);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.feature-card h3 {
  margin: 0 0 10px;
  font-size: 1.12rem;
  font-weight: 750;
  color: var(--text-primary);
}

.feature-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   Pricing Section (资费套餐卡片 + 完整价目表)
   ========================================================================== */
.billing-switch-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 36px;
}

.billing-switch {
  display: inline-flex;
  padding: 5px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid var(--border-ice);
  box-shadow: var(--shadow-sm);
  gap: 4px;
  flex-wrap: wrap;
  justify-content: center;
}

.billing-btn {
  border: none;
  background: transparent;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.billing-btn.is-active {
  background: linear-gradient(135deg, #0284c7, #2563eb);
  color: #ffffff;
  box-shadow: 0 4px 12px -3px rgba(37, 99, 235, 0.45);
}

.pricing-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  align-items: stretch;
  margin-bottom: 42px;
}

.pricing-card {
  background: #ffffff;
  border: 1px solid rgba(203, 213, 225, 0.8);
  border-radius: var(--radius-xl);
  padding: 30px 26px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.25s var(--ease-arctic), box-shadow 0.25s var(--ease-arctic);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.pricing-card.is-popular {
  border: 2px solid var(--accent-cyan);
  background: linear-gradient(180deg, #ffffff 0%, #f5faff 100%);
  box-shadow: var(--shadow-lg);
}

.popular-ribbon {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #0284c7, #2563eb);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
  white-space: nowrap;
}

.plan-tier-badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-sky);
  background: #e0f2fe;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
  align-self: flex-start;
}

.plan-title {
  margin: 0 0 6px;
  font-size: 1.32rem;
  font-weight: 800;
  color: var(--text-primary);
}

.plan-desc {
  margin: 0 0 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
  min-height: 44px;
}

.plan-price-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 6px;
}

.plan-currency {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
}

.plan-amount {
  font-size: 2.85rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.plan-period {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-muted);
}

.plan-sub-cycles {
  font-size: 0.78rem;
  color: var(--text-muted);
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid #e2e8f0;
}

.plan-features {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 11px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.check-icon {
  width: 19px;
  height: 19px;
  border-radius: 50%;
  background: #e0f2fe;
  color: var(--accent-sky);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Complete Pricing Table (100% 匹配截图 8 列结构) */
.pricing-table-card {
  background: #ffffff;
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.pricing-table-header {
  padding: 18px 24px;
  background: linear-gradient(90deg, #f8fbff 0%, #eff6ff 100%);
  border-bottom: 1px solid #e2ecf7;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.pricing-table-header h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
}

.pricing-table-hint {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.table-scroll-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.pricing-matrix-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
  text-align: center;
}

.pricing-matrix-table th,
.pricing-matrix-table td {
  padding: 15px 14px;
  border-bottom: 1px solid #eef2f6;
  font-size: 0.92rem;
}

.pricing-matrix-table th {
  background: #f8fafc;
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 0.86rem;
}

.pricing-matrix-table tbody tr:hover {
  background: #f5faff;
}

.pricing-matrix-table tbody tr:last-child td {
  border-bottom: none;
}

.pricing-matrix-table td:first-child {
  font-weight: 700;
  color: var(--text-primary);
  text-align: left;
  padding-left: 24px;
}

.pricing-matrix-table th:first-child {
  text-align: left;
  padding-left: 24px;
}

.table-buy-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--accent-sky);
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 8px;
  background: #f0f9ff;
  border: 1px solid rgba(14, 165, 233, 0.25);
  transition: all 0.18s ease;
}

.table-buy-link:hover {
  background: var(--accent-sky);
  color: #ffffff;
}

/* ==========================================================================
   Articles Hub Grid (6 篇机场指南与科普)
   ========================================================================== */
.article-filter-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 32px;
}

.filter-pill {
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-subtle);
  background: #ffffff;
  color: var(--text-secondary);
  font-size: 0.86rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.filter-pill.is-active,
.filter-pill:hover {
  background: #e0f2fe;
  border-color: var(--accent-cyan);
  color: var(--accent-sky);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.article-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xs);
  transition: transform 0.24s var(--ease-arctic), box-shadow 0.24s var(--ease-arctic), border-color 0.24s ease;
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.7);
  box-shadow: var(--shadow-md);
}

.article-card.is-hidden {
  display: none;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}

.article-tag {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  background: #eff6ff;
  color: var(--accent-cobalt);
  border: 1px solid rgba(147, 197, 253, 0.45);
}

.article-card-title {
  margin: 0 0 10px;
  font-size: 1.08rem;
  font-weight: 750;
  line-height: 1.45;
  color: var(--text-primary);
}

.article-card:hover .article-card-title {
  color: var(--accent-sky);
}

.article-card-excerpt {
  margin: 0 0 18px;
  font-size: 0.89rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex-grow: 1;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid #f1f5f9;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.article-read-more {
  color: var(--accent-sky);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ==========================================================================
   User Reviews Section (用户评价)
   ========================================================================== */
.reviews-summary-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-bottom: 36px;
  padding: 16px 24px;
  border-radius: var(--radius-pill);
  background: #ffffff;
  border: 1px solid var(--border-ice);
  box-shadow: var(--shadow-xs);
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

.reviews-summary-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.review-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-xs);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.review-stars {
  color: #f59e0b;
  font-size: 0.92rem;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.review-plan-chip {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--accent-sky);
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  padding: 2px 9px;
  border-radius: var(--radius-pill);
}

.review-quote {
  margin: 0;
  font-size: 0.91rem;
  color: var(--text-secondary);
  line-height: 1.72;
  flex-grow: 1;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 11px;
  padding-top: 10px;
  border-top: 1px solid #f1f5f9;
}

.review-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0284c7, #38bdf8);
  color: #ffffff;
  font-weight: 800;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.review-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
}

.review-role {
  font-size: 0.76rem;
  color: var(--text-muted);
}

/* ==========================================================================
   FAQ Accordion Section (常见问题 FAQ)
   ========================================================================== */
.faq-container {
  max-width: 880px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}

.faq-item {
  background: #ffffff;
  border: 1px solid #dbeafe;
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.faq-item[open] {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  list-style: none;
  padding: 18px 22px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

.faq-chevron {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #f0f9ff;
  color: var(--accent-sky);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.22s ease, background 0.22s ease;
}

.faq-item[open] .faq-chevron {
  transform: rotate(180deg);
  background: #0284c7;
  color: #ffffff;
}

.faq-answer {
  padding: 0 22px 18px;
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.78;
  border-top: 1px solid #f1f5f9;
  padding-top: 14px;
}

.faq-answer a {
  color: var(--accent-sky);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ==========================================================================
   Bottom CTA Banner & Footer
   ========================================================================== */
.cta-banner {
  background: linear-gradient(135deg, #0f172a 0%, #0c4a6e 52%, #1d4ed8 100%);
  color: #ffffff;
  border-radius: var(--radius-xl);
  padding: 46px 36px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  box-shadow: var(--shadow-lg);
}

.cta-banner h2 {
  margin: 0 0 8px;
  font-size: clamp(1.45rem, 2.6vw, 2rem);
  font-weight: 800;
}

.cta-banner p {
  margin: 0;
  color: rgba(226, 232, 240, 0.9);
  font-size: 0.98rem;
  max-width: 600px;
}

.cta-banner-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn-white {
  background: #ffffff;
  color: #0f172a;
  font-weight: 750;
}

.btn-white:hover {
  background: #f0f9ff;
  transform: translateY(-2px);
}

.btn-outline-light {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.22);
}

.site-footer {
  background: #f8fbff;
  border-top: 1px solid #e2ecf7;
  padding: 58px 0 32px;
  color: var(--text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr 1.25fr 0.9fr;
  gap: 32px;
  margin-bottom: 40px;
}

.footer-brand-desc {
  margin: 14px 0 16px;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.72;
}

.footer-col h4 {
  margin: 0 0 14px;
  font-size: 0.94rem;
  font-weight: 800;
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.footer-links a {
  font-size: 0.86rem;
  color: var(--text-muted);
  transition: color 0.18s ease;
}

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

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid #e2e8f0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Article Page Layout (6 篇独立文章专属 Arctic 阅读系统)
   ========================================================================== */
.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, #0ea5e9, #2563eb);
  z-index: 200;
  transition: width 0.08s linear;
}

.article-hero {
  padding: 40px 0 32px;
  background: linear-gradient(180deg, #f4f9ff 0%, #ffffff 100%);
  border-bottom: 1px solid #e2ecf7;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.breadcrumbs a {
  color: var(--accent-sky);
  font-weight: 600;
}

.breadcrumbs a:hover {
  text-decoration: underline;
}

.article-h1 {
  margin: 0 0 16px;
  font-size: clamp(1.65rem, 3.2vw, 2.45rem);
  font-weight: 850;
  line-height: 1.28;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  max-width: 900px;
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  font-size: 0.84rem;
  color: var(--text-muted);
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 38px;
  padding: 40px 0 70px;
  align-items: start;
}

.article-prose {
  background: #ffffff;
  border: 1px solid #e8f0f8;
  border-radius: var(--radius-lg);
  padding: 36px 38px;
  box-shadow: var(--shadow-xs);
}

.article-prose h2 {
  margin: 34px 0 14px;
  font-size: 1.42rem;
  font-weight: 800;
  color: var(--text-primary);
  padding-bottom: 8px;
  border-bottom: 2px solid #eff6ff;
  scroll-margin-top: 90px;
}

.article-prose h2:first-of-type {
  margin-top: 24px;
}

.article-prose h3 {
  margin: 24px 0 10px;
  font-size: 1.12rem;
  font-weight: 750;
  color: var(--text-primary);
}

.article-prose p {
  margin: 0 0 16px;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-secondary);
}

.article-prose ul,
.article-prose ol {
  margin: 0 0 18px;
  padding-left: 22px;
  color: var(--text-secondary);
}

.article-prose li {
  margin-bottom: 8px;
  line-height: 1.78;
}

.article-prose a {
  color: var(--accent-sky);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-prose a:hover {
  color: var(--accent-cobalt);
}

.geo-callout {
  background: linear-gradient(135deg, #f0f9ff 0%, #eff6ff 100%);
  border: 1px solid #bae6fd;
  border-left: 4px solid var(--accent-sky);
  border-radius: 12px;
  padding: 18px 20px;
  margin-bottom: 24px;
}

.geo-callout-title {
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--accent-sky);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.geo-callout p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.75;
}

.article-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 22px 0;
  border: 1px solid #e2ecf7;
  border-radius: 12px;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
  font-size: 0.9rem;
}

.article-table th,
.article-table td {
  padding: 12px 14px;
  border-bottom: 1px solid #eef2f6;
  text-align: left;
}

.article-table th {
  background: #f8fbff;
  font-weight: 700;
  color: var(--text-primary);
}

.article-inline-cta {
  margin: 28px 0;
  padding: 22px 24px;
  border-radius: 16px;
  background: linear-gradient(135deg, #0f172a 0%, #0369a1 100%);
  color: #ffffff;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.article-inline-cta h3 {
  margin: 0 0 6px;
  color: #ffffff;
  font-size: 1.12rem;
}

.article-inline-cta p {
  margin: 0;
  color: rgba(226, 232, 240, 0.92);
  font-size: 0.9rem;
}

.article-inline-cta a.btn {
  text-decoration: none;
}

/* Sidebar inside Article Pages */
.article-sidebar {
  position: sticky;
  top: 90px;
  display: grid;
  gap: 20px;
}

.sidebar-card {
  background: #ffffff;
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-xs);
}

.sidebar-card h3 {
  margin: 0 0 14px;
  font-size: 0.96rem;
  font-weight: 800;
  color: var(--text-primary);
}

.toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.toc-list a {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 5px 10px;
  border-radius: 8px;
  border-left: 2px solid transparent;
  transition: all 0.16s ease;
}

.toc-list a:hover {
  color: var(--accent-sky);
  background: #f0f9ff;
  border-left-color: var(--accent-sky);
}

.sidebar-promo {
  background: linear-gradient(180deg, #f0f9ff 0%, #ffffff 100%);
}

.sidebar-price-line {
  font-size: 0.84rem;
  color: var(--text-secondary);
  padding: 7px 0;
  border-bottom: 1px dashed #cbd5e1;
  display: flex;
  justify-content: space-between;
}

/* Prev / Next & Related Articles */
.article-prev-next {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 32px;
}

.prev-next-card {
  display: block;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: #f8fbff;
  border: 1px solid #dbeafe;
  text-decoration: none !important;
  transition: all 0.2s ease;
}

.prev-next-card:hover {
  border-color: var(--accent-cyan);
  background: #eff6ff;
  transform: translateY(-2px);
}

.prev-next-label {
  display: block;
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--accent-sky);
  margin-bottom: 4px;
}

.prev-next-title {
  display: block;
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--text-primary);
}

.related-articles-section {
  margin-top: 42px;
  padding-top: 36px;
  border-top: 1px solid #e2e8f0;
}

/* Toast Notification */
.toast-notice {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: #0f172a;
  color: #ffffff;
  padding: 11px 20px;
  border-radius: var(--radius-pill);
  font-size: 0.86rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  z-index: 300;
  transition: opacity 0.22s ease, transform 0.22s ease;
}

.toast-notice.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Mobile Floating Bottom Quick Action Bar */
.mobile-sticky-cta {
  display: none;
}

/* ==========================================================================
   Responsive Breakpoints (适配平板与手机移动端)
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .hero-subtitle {
    max-width: 100%;
  }

  .features-grid,
  .pricing-cards-grid,
  .articles-grid,
  .reviews-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .entity-box {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    position: static;
    order: -1;
  }
}

@media (max-width: 900px) {
  .nav-links,
  .nav-actions {
    display: none;
  }

  .mobile-menu-btn {
    display: inline-flex;
  }
}

@media (max-width: 680px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 58px 0;
  }

  .hero-section {
    padding: 34px 0 54px;
  }

  .hero-trust-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .features-grid,
  .pricing-cards-grid,
  .articles-grid,
  .reviews-grid,
  .footer-grid,
  .article-prev-next {
    grid-template-columns: 1fr;
  }

  .console-quota-card {
    grid-template-columns: 1fr;
  }

  .console-node-row {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .node-load-wrap {
    display: none;
  }

  .article-prose {
    padding: 24px 18px;
  }

  .cta-banner {
    padding: 30px 22px;
  }

  .reviews-summary-bar {
    border-radius: var(--radius-lg);
    gap: 12px;
    padding: 14px 16px;
  }

  .mobile-sticky-cta {
    display: flex;
    position: fixed;
    bottom: 12px;
    left: 14px;
    right: 14px;
    z-index: 95;
    background: rgba(15, 23, 42, 0.94);
    backdrop-filter: blur(12px);
    color: #ffffff;
    border: 1px solid rgba(56, 189, 248, 0.35);
    border-radius: var(--radius-pill);
    padding: 8px 10px 8px 18px;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    box-shadow: 0 14px 32px rgba(15, 23, 42, 0.28);
  }

  body {
    padding-bottom: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .console-window {
    animation: none;
    opacity: 1;
    transform: none;
  }
  .live-dot {
    animation: none;
  }
  html {
    scroll-behavior: auto;
  }
}