/* Notion Design System & Digital Garden CSS */
:root {
  --bg-page: #F7F6F3;
  --bg-canvas: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-hover: rgba(55, 53, 47, 0.06);
  --bg-subtle: #F1F1EF;
  --border-color: #E9E8E4;
  --border-strong: rgba(55, 53, 47, 0.16);
  --text-primary: #37352F;
  --text-secondary: #787774;
  --text-tertiary: #9B9A97;
  
  --accent-maple: #D9730D;
  --accent-maple-subtle: #FAF3EC;
  --accent-blue: #2383E2;
  --accent-blue-subtle: #EDF5FA;
  --accent-green: #0F7B6C;
  --accent-green-subtle: #EDF6EE;
  --accent-red: #EB5757;
  --accent-purple: #6940A5;
  --accent-purple-subtle: #F7F3F8;

  --callout-yellow-bg: #FDF5E2;
  --callout-yellow-border: #F5E0B3;
  --callout-yellow-text: #402008;

  --callout-blue-bg: #EDF5FA;
  --callout-blue-border: #D3E5F3;
  --callout-blue-text: #183347;

  --callout-green-bg: #EDF6EE;
  --callout-green-border: #CFE6D3;
  --callout-green-text: #143F24;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.08);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, "Apple Color Emoji", Arial, sans-serif, "Segoe UI Emoji", "Segoe UI Symbol";
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --font-serif: Lyon-Text, Georgia, YuMincho, "Yu Mincho", "Hiragino Mincho ProN", "Songti SC", "SimSun", serif;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --radius-xl: 16px;
  --max-content-width: 960px;
}

[data-theme="dark"] {
  --bg-page: #191919;
  --bg-canvas: #202020;
  --bg-card: #252525;
  --bg-hover: rgba(255, 255, 255, 0.07);
  --bg-subtle: #2A2A2A;
  --border-color: #2F2F2F;
  --border-strong: rgba(255, 255, 255, 0.14);
  --text-primary: #FFFFFF;
  --text-secondary: #9B9A97;
  --text-tertiary: #6E6D6A;

  --accent-maple: #E07D1E;
  --accent-maple-subtle: #312316;
  --accent-blue: #3E94E4;
  --accent-blue-subtle: #192734;
  --accent-green: #259D88;
  --accent-green-subtle: #162C25;

  --callout-yellow-bg: #2B2519;
  --callout-yellow-border: #4D3F22;
  --callout-yellow-text: #FDE7BA;

  --callout-blue-bg: #1B2936;
  --callout-blue-border: #2A4864;
  --callout-blue-text: #CFE5FC;

  --callout-green-bg: #1B2B22;
  --callout-green-border: #264A35;
  --callout-green-text: #CFEED9;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

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

/* Top Announcement Bar */
.top-announcement {
  background: var(--bg-canvas);
  border-bottom: 1px solid var(--border-color);
  padding: 8px 16px;
  font-size: 13px;
  text-align: center;
  position: relative;
  z-index: 101;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.3s ease;
}

.top-announcement .badge {
  background: var(--accent-maple-subtle);
  color: var(--accent-maple);
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 11px;
}

.top-announcement .link-cta {
  color: var(--accent-maple);
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}

/* Notion Navigation Header */
.notion-navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 246, 243, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: background 0.3s ease, border-color 0.3s ease;
}

[data-theme="dark"] .notion-navbar {
  background: rgba(25, 25, 25, 0.88);
}

.navbar-container {
  max-width: 1320px;
  width: 100%;
  margin: 0 auto;
  padding: 8px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}

.navbar-brand .brand-icon {
  font-size: 20px;
  display: inline-block;
  transition: transform 0.25s ease;
}

.navbar-brand:hover .brand-icon {
  transform: rotate(15deg) scale(1.1);
}

.navbar-brand .brand-sub {
  color: var(--text-tertiary);
  font-weight: 400;
  font-size: 13px;
  margin-left: 2px;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  flex-shrink: 0;
}

.nav-item {
  position: relative;
  flex-shrink: 0;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  color: var(--text-secondary);
  white-space: nowrap;
  word-break: keep-all;
  flex-shrink: 0;
  line-height: 1.2;
  transition: background 0.15s ease, color 0.15s ease;
}

.nav-link:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-link.active {
  color: var(--text-primary);
  font-weight: 500;
}

.nav-link.highlight {
  color: var(--accent-maple);
  font-weight: 600;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-theme-toggle {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.btn-theme-toggle:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.btn-primary-notion {
  background: var(--text-primary);
  color: var(--bg-page);
  border: 1px solid var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 6px 14px;
  font-size: 13.5px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.btn-primary-notion:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  opacity: 0.95;
}

/* Mobile Nav Toggle */
.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 20px;
  color: var(--text-primary);
  padding: 4px;
}

/* Main Container */
.notion-app-container {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: 0 24px 100px 24px;
  position: relative;
  z-index: 10;
}

/* Notion Cover */
.notion-cover-wrapper {
  position: relative;
  width: 100%;
  height: 230px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 18px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  background: #EFEFEA;
}

.notion-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  transition: transform 0.5s ease;
}

.notion-cover-wrapper:hover .notion-cover-img {
  transform: scale(1.02);
}

.cover-badge-tag {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: #37352F;
  font-family: var(--font-mono);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Page Icon Header */
.page-header-container {
  position: relative;
  padding-top: 48px;
  margin-bottom: 24px;
}

.notion-page-icon {
  position: absolute;
  top: -42px;
  left: 0;
  width: 78px;
  height: 78px;
  background: var(--bg-card);
  border: 2px solid var(--bg-page);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 44px;
  cursor: pointer;
  user-select: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.notion-page-icon:hover {
  transform: scale(1.08) rotate(-4deg);
  box-shadow: var(--shadow-lg);
}

.page-breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 12px;
}

.page-breadcrumb a:hover {
  color: var(--text-primary);
  text-decoration: underline;
}

.page-title {
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

/* Page Properties Table (Notion Property Block) */
.notion-properties {
  display: grid;
  grid-template-columns: 120px 1fr;
  row-gap: 8px;
  padding: 16px 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 28px;
  font-size: 13.5px;
}

.prop-key {
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.prop-value {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.notion-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 12px;
}

.pill-green {
  background: var(--accent-green-subtle);
  color: var(--accent-green);
}

.pill-orange {
  background: var(--accent-maple-subtle);
  color: var(--accent-maple);
}

.pill-blue {
  background: var(--accent-blue-subtle);
  color: var(--accent-blue);
}

.pill-gray {
  background: var(--bg-subtle);
  color: var(--text-secondary);
}

.pill-purple {
  background: var(--accent-purple-subtle);
  color: var(--accent-purple);
}

/* Callout Box */
.notion-callout {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  margin: 20px 0;
  line-height: 1.6;
  font-size: 14.5px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.notion-callout:hover {
  transform: translateY(-1px);
}

.notion-callout.yellow {
  background: var(--callout-yellow-bg);
  border: 1px solid var(--callout-yellow-border);
  color: var(--callout-yellow-text);
}

.notion-callout.blue {
  background: var(--callout-blue-bg);
  border: 1px solid var(--callout-blue-border);
  color: var(--callout-blue-text);
}

.notion-callout.green {
  background: var(--callout-green-bg);
  border: 1px solid var(--callout-green-border);
  color: var(--callout-green-text);
}

.callout-icon {
  font-size: 22px;
  flex-shrink: 0;
  line-height: 1.2;
}

.callout-body {
  flex: 1;
}

.callout-title {
  font-weight: 600;
  margin-bottom: 4px;
}

/* Notion Toggle Collapsible */
.notion-toggle {
  margin: 14px 0;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.notion-toggle.open {
  border-color: var(--border-color);
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  padding: 12px 16px;
}

.toggle-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 4px;
  cursor: pointer;
  user-select: none;
  font-weight: 500;
  font-size: 15px;
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  transition: background 0.15s ease;
}

.toggle-header:hover {
  background: var(--bg-hover);
}

.toggle-arrow {
  display: inline-block;
  font-size: 11px;
  color: var(--text-tertiary);
  transition: transform 0.2s ease;
}

.notion-toggle.open .toggle-arrow {
  transform: rotate(90deg);
  color: var(--accent-maple);
}

.toggle-content {
  display: none;
  padding: 12px 6px 6px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.notion-toggle.open .toggle-content {
  display: block;
}

/* Section Headings */
.notion-h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.015em;
  margin: 44px 0 16px 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
}

.notion-h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 24px 0 12px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Notion Database Table View */
.notion-database-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin: 20px 0;
}

.database-header {
  padding: 12px 18px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-subtle);
  flex-wrap: wrap;
  gap: 10px;
}

.database-views {
  display: flex;
  align-items: center;
  gap: 6px;
}

.view-tab {
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all 0.15s ease;
}

.view-tab:hover, .view-tab.active {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

.database-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-db-refresh {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.btn-db-refresh:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.notion-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  text-align: left;
}

.notion-table th {
  background: var(--bg-subtle);
  padding: 10px 16px;
  color: var(--text-secondary);
  font-weight: 500;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.notion-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  vertical-align: middle;
}

.notion-table tr:hover td {
  background: var(--bg-hover);
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #27ae60;
  margin-right: 6px;
}

.status-dot.active-ping {
  animation: ping-wave 1.5s infinite;
}

@keyframes ping-wave {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.badge-tag-node {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--bg-subtle);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 28px 0;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

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

.pricing-card.featured {
  border: 2px solid var(--accent-maple);
}

.pricing-card .badge-featured {
  position: absolute;
  top: -12px;
  right: 18px;
  background: var(--accent-maple);
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 12px;
  box-shadow: 0 2px 6px rgba(217, 115, 13, 0.3);
}

.pricing-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.pricing-desc {
  font-size: 13px;
  color: var(--text-secondary);
  min-height: 38px;
  margin-bottom: 16px;
}

.pricing-price {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.pricing-price span {
  font-size: 13px;
  color: var(--text-tertiary);
  font-weight: 400;
}

.pricing-features {
  list-style: none;
  margin: 18px 0 24px 0;
  flex: 1;
}

.pricing-features li {
  font-size: 13.5px;
  color: var(--text-secondary);
  padding: 6px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pricing-features li strong {
  color: var(--text-primary);
}

.pricing-features li .check-icon {
  color: var(--accent-green);
  font-size: 14px;
  flex-shrink: 0;
}

.btn-card-action {
  width: 100%;
  padding: 10px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  display: block;
}

.btn-card-action.primary {
  background: var(--text-primary);
  color: var(--bg-page);
  border: 1px solid var(--text-primary);
}

.btn-card-action.primary:hover {
  background: #000000;
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .btn-card-action.primary:hover {
  background: #EDEDED;
  color: #000000;
}

.btn-card-action.secondary {
  background: var(--bg-subtle);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-card-action.secondary:hover {
  background: var(--bg-hover);
}

/* Core Advantages Grid */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 20px 0;
}

.advantage-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.advantage-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.advantage-icon {
  font-size: 28px;
  margin-bottom: 12px;
  display: inline-block;
}

.advantage-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.advantage-desc {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Testimonials Grid */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 20px 0;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.25s ease;
}

.testimonial-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.test-quote {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 16px;
  position: relative;
}

.test-user {
  display: flex;
  align-items: center;
  gap: 10px;
  border-top: 1px solid var(--border-color);
  padding-top: 12px;
}

.user-avatar-circle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--bg-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  border: 1px solid var(--border-color);
}

.user-info .name {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-primary);
}

.user-info .role {
  font-size: 11.5px;
  color: var(--text-tertiary);
}

/* Dedicated Knowledge Base Section Banner on Homepage */
.kb-jump-card {
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-subtle) 100%);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--accent-maple);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 32px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
}

.kb-jump-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-maple);
}

.kb-jump-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.kb-jump-content p {
  font-size: 13.5px;
  color: var(--text-secondary);
  max-width: 600px;
}

.btn-kb-cta {
  background: var(--accent-maple);
  color: #FFFFFF;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 2px 8px rgba(217, 115, 13, 0.25);
  transition: all 0.2s ease;
}

.btn-kb-cta:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

/* Notion Code Block */
.notion-code-block {
  background: var(--bg-canvas);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin: 12px 0;
  position: relative;
  overflow: hidden;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-tertiary);
}

.code-header .copy-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.code-header .copy-btn:hover {
  color: var(--text-primary);
}

.code-content {
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-primary);
  overflow-x: auto;
}

/* Notion Footer */
.notion-footer {
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  font-size: 13px;
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Toast Notification */
.notion-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--text-primary);
  color: var(--bg-page);
  padding: 10px 20px;
  border-radius: 20px;
  font-size: 13.5px;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 8px;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.notion-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Responsive Breakpoints */
@media (max-width: 900px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 450px;
    margin: 20px auto;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .advantages-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1024px) {
  .navbar-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 12px 20px;
    box-shadow: var(--shadow-md);
  }
  .navbar-menu.open {
    display: flex;
  }
  .mobile-toggle {
    display: block;
  }
}

@media (max-width: 768px) {
  .page-title {
    font-size: 1.7rem;
  }
  .notion-cover-wrapper {
    height: 160px;
  }
  .kb-jump-card {
    flex-direction: column;
    align-items: flex-start;
  }
}