/* ============================================
   fastingtool.org - Global Stylesheet
   Theme: Purple Mystery / Night Fasting
   Prefix: ft (unique to this site)
   ============================================ */

:root {
  --ft-primary: #7c3aed;
  --ft-primary-dark: #6d28d9;
  --ft-primary-light: #a78bfa;
  --ft-accent: #c4b5fd;
  --ft-dark: #1e1b4b;
  --ft-darker: #0f0e2e;
  --ft-light: #f5f3ff;
  --ft-lighter: #faf5ff;
  --ft-text: #1f2937;
  --ft-text-light: #6b7280;
  --ft-white: #ffffff;
  --ft-border: #e9d5ff;
  --ft-shadow: 0 4px 6px -1px rgba(124, 58, 237, 0.1), 0 2px 4px -2px rgba(124, 58, 237, 0.1);
  --ft-shadow-lg: 0 10px 15px -3px rgba(124, 58, 237, 0.15), 0 4px 6px -4px rgba(124, 58, 237, 0.1);
  --ft-radius: 12px;
  --ft-radius-lg: 16px;
  --ft-radius-sm: 8px;
  --ft-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--ft-text);
  background: var(--ft-lighter);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ============================================
   NAVIGATION
   ============================================ */
.ft-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: linear-gradient(135deg, var(--ft-darker) 0%, var(--ft-dark) 100%);
  border-bottom: 1px solid rgba(167, 139, 250, 0.2);
  backdrop-filter: blur(12px);
}
.ft-nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.ft-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ft-white);
  font-weight: 700;
  font-size: 1.25rem;
}
.ft-logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--ft-primary) 0%, var(--ft-primary-light) 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.ft-nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}
.ft-nav-links a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--ft-transition);
  position: relative;
  padding: 4px 0;
}
.ft-nav-links a:hover, .ft-nav-links a.active {
  color: var(--ft-white);
}
.ft-nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--ft-primary), var(--ft-primary-light));
  border-radius: 2px;
}
.ft-mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--ft-white);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 8px;
}

/* ============================================
   BREADCRUMB
   ============================================ */
.ft-breadcrumb {
  max-width: 1200px;
  margin: 0 auto;
  padding: 12px 24px;
  font-size: 0.85rem;
  color: var(--ft-text-light);
}
.ft-breadcrumb a {
  color: var(--ft-primary);
  text-decoration: none;
}
.ft-breadcrumb a:hover { text-decoration: underline; }
.ft-breadcrumb-sep { margin: 0 8px; color: var(--ft-border); }
.ft-breadcrumb-current { color: var(--ft-text); font-weight: 500; }

/* ============================================
   HERO
   ============================================ */
.ft-hero {
  background: linear-gradient(135deg, var(--ft-darker) 0%, var(--ft-dark) 50%, #312e81 100%);
  color: var(--ft-white);
  padding: 80px 24px 60px;
  position: relative;
  overflow: hidden;
}
.ft-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(124,58,237,0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.ft-hero-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.ft-hero h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--ft-white) 0%, var(--ft-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.ft-hero-subtitle {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 32px;
  line-height: 1.7;
}
.ft-hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--ft-primary) 0%, var(--ft-primary-dark) 100%);
  color: var(--ft-white);
  padding: 14px 32px;
  border-radius: var(--ft-radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--ft-transition);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(124, 58, 237, 0.4);
}
.ft-hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(124, 58, 237, 0.5);
}
.ft-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.ft-stat-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(167, 139, 250, 0.2);
  border-radius: var(--ft-radius);
  padding: 20px;
  text-align: center;
  backdrop-filter: blur(10px);
}
.ft-stat-number {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--ft-primary-light);
  display: block;
}
.ft-stat-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  margin-top: 4px;
}
.ft-hero-visual { position: relative; }
.ft-hero-chart {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(167, 139, 250, 0.2);
  border-radius: var(--ft-radius-lg);
  padding: 30px;
  backdrop-filter: blur(10px);
}
.ft-chart-bar {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  height: 200px;
  padding: 20px 0;
}
.ft-bar {
  flex: 1;
  background: linear-gradient(to top, var(--ft-primary), var(--ft-primary-light));
  border-radius: 6px 6px 0 0;
  position: relative;
  transition: var(--ft-transition);
}
.ft-bar:hover { opacity: 0.8; }
.ft-bar-label {
  position: absolute;
  bottom: -24px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.7rem;
  color: rgba(255,255,255,0.5);
  white-space: nowrap;
}

/* ============================================
   SECTIONS
   ============================================ */
.ft-calc-section {
  padding: 60px 24px;
  background: var(--ft-white);
}
.ft-calc-container {
  max-width: 1200px;
  margin: 0 auto;
}
.ft-section-header {
  text-align: center;
  margin-bottom: 40px;
}
.ft-section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--ft-dark);
  margin-bottom: 12px;
}
.ft-section-header p {
  color: var(--ft-text-light);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   TABS
   ============================================ */
.ft-tabs {
  display: flex;
  gap: 4px;
  background: var(--ft-light);
  padding: 6px;
  border-radius: var(--ft-radius);
  margin-bottom: 24px;
  overflow-x: auto;
  scrollbar-width: none;
}
.ft-tabs::-webkit-scrollbar { display: none; }
.ft-tab {
  padding: 10px 20px;
  border: none;
  background: transparent;
  color: var(--ft-text-light);
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--ft-radius-sm);
  cursor: pointer;
  transition: var(--ft-transition);
  white-space: nowrap;
  flex-shrink: 0;
}
.ft-tab:hover {
  color: var(--ft-primary);
  background: rgba(124, 58, 237, 0.05);
}
.ft-tab.active {
  background: var(--ft-white);
  color: var(--ft-primary);
  box-shadow: var(--ft-shadow);
}
.ft-tab-content { display: none; }
.ft-tab-content.active {
  display: block;
  animation: ftFadeIn 0.3s ease;
}
@keyframes ftFadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   CARDS (整卡片可点击)
   ============================================ */
.ft-card {
  background: var(--ft-white);
  border: 1px solid var(--ft-border);
  border-radius: var(--ft-radius-lg);
  padding: 28px;
  margin-bottom: 20px;
  box-shadow: var(--ft-shadow);
  transition: var(--ft-transition);
}
.ft-card:hover {
  box-shadow: var(--ft-shadow-lg);
  border-color: var(--ft-accent);
}
.ft-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ft-dark);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.ft-card-title-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--ft-primary) 0%, var(--ft-primary-light) 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ft-white);
  font-size: 0.9rem;
}
.ft-form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}
.ft-form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.ft-form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ft-text);
}
.ft-form-group input, .ft-form-group select, .ft-form-group textarea {
  padding: 12px 14px;
  border: 2px solid var(--ft-border);
  border-radius: var(--ft-radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--ft-transition);
  background: var(--ft-white);
  color: var(--ft-text);
}
.ft-form-group input:focus, .ft-form-group select:focus, .ft-form-group textarea:focus {
  outline: none;
  border-color: var(--ft-primary);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}
.ft-form-group input::placeholder { color: #c4b5fd; }
.ft-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: none;
  border-radius: var(--ft-radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: var(--ft-transition);
}
.ft-btn-primary {
  background: linear-gradient(135deg, var(--ft-primary) 0%, var(--ft-primary-dark) 100%);
  color: var(--ft-white);
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
}
.ft-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(124, 58, 237, 0.4);
}
.ft-btn-secondary {
  background: var(--ft-light);
  color: var(--ft-primary);
  border: 2px solid var(--ft-border);
}
.ft-btn-secondary:hover {
  background: var(--ft-primary);
  color: var(--ft-white);
  border-color: var(--ft-primary);
}
.ft-btn-danger {
  background: #fef2f2;
  color: #dc2626;
  border: 2px solid #fecaca;
}
.ft-btn-danger:hover {
  background: #dc2626;
  color: var(--ft-white);
}

/* ============================================
   RESULTS
   ============================================ */
.ft-result-box {
  background: linear-gradient(135deg, var(--ft-light) 0%, var(--ft-white) 100%);
  border: 2px solid var(--ft-border);
  border-radius: var(--ft-radius-lg);
  padding: 28px;
  margin-top: 24px;
}
.ft-result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}
.ft-result-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ft-dark);
}
.ft-result-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}
.ft-badge-success { background: #dcfce7; color: #166534; }
.ft-badge-warning { background: #fef3c7; color: #92400e; }
.ft-badge-info { background: #e0e7ff; color: #3730a3; }
.ft-metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.ft-metric {
  background: var(--ft-white);
  border: 1px solid var(--ft-border);
  border-radius: var(--ft-radius);
  padding: 20px;
  text-align: center;
  transition: var(--ft-transition);
}
.ft-metric:hover {
  border-color: var(--ft-primary-light);
  transform: translateY(-2px);
}
.ft-metric-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--ft-primary);
  line-height: 1;
}
.ft-metric-label {
  font-size: 0.8rem;
  color: var(--ft-text-light);
  margin-top: 8px;
  font-weight: 500;
}
.ft-metric-delta {
  font-size: 0.75rem;
  margin-top: 4px;
  font-weight: 600;
}
.ft-delta-positive { color: #16a34a; }
.ft-delta-negative { color: #dc2626; }

/* Progress Ring */
.ft-progress-ring {
  width: 120px;
  height: 120px;
  margin: 0 auto 16px;
}
.ft-progress-ring svg { transform: rotate(-90deg); }
.ft-progress-ring-bg {
  fill: none;
  stroke: var(--ft-border);
  stroke-width: 8;
}
.ft-progress-ring-fill {
  fill: none;
  stroke: url(#progressGradient);
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset 1s ease;
}

/* Timeline */
.ft-timeline {
  position: relative;
  padding-left: 32px;
}
.ft-timeline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--ft-primary), var(--ft-accent));
}
.ft-timeline-item {
  position: relative;
  padding-bottom: 24px;
}
.ft-timeline-item::before {
  content: '';
  position: absolute;
  left: -26px;
  top: 4px;
  width: 12px;
  height: 12px;
  background: var(--ft-primary);
  border-radius: 50%;
  border: 2px solid var(--ft-white);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2);
}
.ft-timeline-time {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ft-primary);
  margin-bottom: 4px;
}
.ft-timeline-content {
  background: var(--ft-white);
  border: 1px solid var(--ft-border);
  border-radius: var(--ft-radius-sm);
  padding: 12px 16px;
  font-size: 0.9rem;
}

/* ============================================
   AD SLOTS (广告位隐藏机制)
   ============================================ */
.ft-ad-slot {
  width: 100%;
  min-height: 250px;
  max-height: 250px;
  background: rgba(245, 243, 255, 0.6);
  border: 2px dashed var(--ft-border);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 8px;
  color: var(--ft-primary);
  font-size: 0.85rem;
  opacity: 0.6;
  margin: 20px 0;
  padding: 15px;
  transition: var(--ft-transition);
  overflow: hidden;
}
.ft-ad-slot.has-content {
  display: flex;
}
.ft-ad-slot:hover {
  border-color: var(--ft-primary-light);
  background: rgba(245, 243, 255, 0.9);
}
.ft-ad-label {
  font-size: 0.7rem;
  color: var(--ft-text-light);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}
.ft-ad-placeholder {
  font-size: 0.85rem;
  color: var(--ft-primary-light);
  font-weight: 500;
}

/* ============================================
   BLOG CARDS (整卡片可点击)
   ============================================ */
.ft-blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  margin-top: 32px;
}
a.ft-blog-card {
  background: var(--ft-white);
  border: 1px solid var(--ft-border);
  border-radius: var(--ft-radius-lg);
  overflow: hidden;
  transition: var(--ft-transition);
  text-decoration: none;
  color: inherit;
  display: block;
}
a.ft-blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--ft-shadow-lg);
  border-color: var(--ft-primary-light);
}
a.ft-blog-card * { pointer-events: none; }
.ft-blog-card-img {
  width: 100%;
  height: 180px;
  background: linear-gradient(135deg, var(--ft-light) 0%, var(--ft-accent) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}
.ft-blog-card-body { padding: 20px; }
.ft-blog-card-tag {
  display: inline-block;
  padding: 4px 10px;
  background: var(--ft-light);
  color: var(--ft-primary);
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 10px;
}
.ft-blog-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ft-dark);
  margin-bottom: 8px;
  line-height: 1.4;
}
.ft-blog-card-excerpt {
  font-size: 0.9rem;
  color: var(--ft-text-light);
  line-height: 1.6;
  margin-bottom: 12px;
}
.ft-blog-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--ft-text-light);
}

/* ============================================
   TOOL CARDS (整卡片可点击)
   ============================================ */
.ft-tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 32px;
}
a.ft-tool-card {
  background: var(--ft-white);
  border: 1px solid var(--ft-border);
  border-radius: var(--ft-radius-lg);
  padding: 28px;
  transition: var(--ft-transition);
  text-decoration: none;
  color: inherit;
  display: block;
}
a.ft-tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--ft-shadow-lg);
  border-color: var(--ft-primary-light);
}
a.ft-tool-card * { pointer-events: none; }
.ft-tool-card-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--ft-primary) 0%, var(--ft-primary-light) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ft-white);
  font-size: 1.5rem;
  margin-bottom: 16px;
}
.ft-tool-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ft-dark);
  margin-bottom: 8px;
}
.ft-tool-card-desc {
  font-size: 0.9rem;
  color: var(--ft-text-light);
  line-height: 1.6;
  margin-bottom: 12px;
}
.ft-tool-card-meta {
  font-size: 0.8rem;
  color: var(--ft-primary);
  font-weight: 600;
}

/* ============================================
   ARTICLE
   ============================================ */
.ft-article {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 24px;
  background: var(--ft-white);
}
.ft-article-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--ft-border);
}
.ft-article-category {
  display: inline-block;
  padding: 4px 12px;
  background: var(--ft-light);
  color: var(--ft-primary);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 12px;
}
.ft-article-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--ft-dark);
  line-height: 1.2;
  margin-bottom: 16px;
}
.ft-article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--ft-text-light);
}
.ft-article-author {
  display: flex;
  align-items: center;
  gap: 8px;
}
.ft-article-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--ft-primary), var(--ft-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ft-white);
  font-weight: 700;
  font-size: 0.8rem;
}
.ft-article-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--ft-text);
}
.ft-article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ft-dark);
  margin: 40px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--ft-border);
}
.ft-article-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ft-primary-dark);
  margin: 28px 0 12px;
}
.ft-article-body p { margin-bottom: 20px; }
.ft-article-body ul, .ft-article-body ol {
  margin-bottom: 20px;
  padding-left: 24px;
}
.ft-article-body li { margin-bottom: 8px; }
.ft-article-body blockquote {
  background: var(--ft-light);
  border-left: 4px solid var(--ft-primary);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 var(--ft-radius-sm) var(--ft-radius-sm) 0;
  font-style: italic;
  color: var(--ft-text-light);
}
.ft-article-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--ft-radius);
  margin: 24px 0;
}

/* ============================================
   INLINE TOOL CARD (文章内联工具卡片)
   ============================================ */
a.ft-inline-tool {
  display: flex;
  align-items: center;
  gap: 16px;
  background: linear-gradient(135deg, var(--ft-light) 0%, var(--ft-white) 100%);
  border: 2px solid var(--ft-border);
  border-radius: var(--ft-radius-lg);
  padding: 20px 24px;
  margin: 28px 0;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: var(--ft-transition);
}
a.ft-inline-tool:hover {
  border-color: var(--ft-primary-light);
  box-shadow: var(--ft-shadow);
}
a.ft-inline-tool * { pointer-events: none; }
.ft-inline-tool-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--ft-primary) 0%, var(--ft-primary-light) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ft-white);
  font-size: 1.5rem;
  flex-shrink: 0;
}
.ft-inline-tool-content { flex: 1; }
.ft-inline-tool-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ft-dark);
  margin-bottom: 4px;
}
.ft-inline-tool-desc {
  font-size: 0.9rem;
  color: var(--ft-text-light);
  line-height: 1.5;
}
.ft-inline-tool-arrow {
  font-size: 1.2rem;
  color: var(--ft-primary);
  flex-shrink: 0;
}
.ft-inline-tool-privacy {
  font-size: 0.75rem;
  color: var(--ft-text-light);
  margin-top: 8px;
  font-style: italic;
}

/* ============================================
   TOOL EMBED (旧版兼容)
   ============================================ */
.ft-tool-embed {
  background: linear-gradient(135deg, var(--ft-light) 0%, var(--ft-white) 100%);
  border: 2px solid var(--ft-border);
  border-radius: var(--ft-radius-lg);
  padding: 24px;
  margin: 28px 0;
  text-align: center;
}
.ft-tool-embed-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ft-dark);
  margin-bottom: 8px;
}
.ft-tool-embed-desc {
  font-size: 0.9rem;
  color: var(--ft-text-light);
  margin-bottom: 16px;
}

/* ============================================
   RELATED ARTICLES & RECOMMENDED TOOLS
   ============================================ */
.ft-related-section {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 2px solid var(--ft-border);
}
.ft-related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 16px;
}
a.ft-related-card {
  text-decoration: none;
  color: inherit;
  display: block;
  padding: 16px;
  background: var(--ft-white);
  border: 1px solid var(--ft-border);
  border-radius: var(--ft-radius);
  transition: var(--ft-transition);
}
a.ft-related-card:hover {
  border-color: var(--ft-primary-light);
  box-shadow: var(--ft-shadow);
}
a.ft-related-card * { pointer-events: none; }
.ft-related-emoji {
  font-size: 1.5rem;
  margin-bottom: 8px;
}
.ft-related-title {
  font-weight: 600;
  color: var(--ft-dark);
  font-size: 0.95rem;
  line-height: 1.4;
  margin-bottom: 4px;
}
.ft-related-meta {
  font-size: 0.8rem;
  color: var(--ft-text-light);
}

/* ============================================
   AUTHOR BOX
   ============================================ */
.ft-author-box {
  margin-top: 40px;
  padding: 24px;
  background: var(--ft-light);
  border-radius: var(--ft-radius-lg);
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.ft-author-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--ft-primary), var(--ft-primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ft-white);
  font-weight: 700;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.ft-author-name {
  font-weight: 700;
  color: var(--ft-dark);
  margin-bottom: 4px;
}
.ft-author-bio {
  font-size: 0.9rem;
  color: var(--ft-text-light);
  line-height: 1.6;
  margin: 0;
}
.ft-author-link {
  margin-top: 12px;
}
.ft-author-link a {
  color: var(--ft-primary);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
}
.ft-author-link a:hover { text-decoration: underline; }

/* ============================================
   FAQ
   ============================================ */
.ft-faq-item {
  border: 1px solid var(--ft-border);
  border-radius: var(--ft-radius);
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--ft-white);
}
.ft-faq-question {
  width: 100%;
  padding: 18px 24px;
  background: var(--ft-white);
  border: none;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ft-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--ft-transition);
}
.ft-faq-question:hover { background: var(--ft-light); }
.ft-faq-question.active {
  background: var(--ft-light);
  color: var(--ft-primary);
}
.ft-faq-icon {
  font-size: 1.2rem;
  transition: var(--ft-transition);
  color: var(--ft-primary);
}
.ft-faq-question.active .ft-faq-icon { transform: rotate(180deg); }
.ft-faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.ft-faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--ft-text-light);
  line-height: 1.7;
}

/* ============================================
   FOOTER
   ============================================ */
.ft-footer {
  background: var(--ft-darker);
  color: rgba(255,255,255,0.7);
  padding: 48px 24px 24px;
  margin-top: 60px;
}
.ft-footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 40px;
}
.ft-footer-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ft-white);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.ft-footer-desc {
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 20px;
}
.ft-footer-links h4 {
  color: var(--ft-white);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.ft-footer-links ul { list-style: none; }
.ft-footer-links li { margin-bottom: 10px; }
.ft-footer-links a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--ft-transition);
}
.ft-footer-links a:hover { color: var(--ft-primary-light); }
.ft-footer-bottom {
  max-width: 1200px;
  margin: 32px auto 0;
  padding-top: 24px;
  border-top: 1px solid rgba(167, 139, 250, 0.2);
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}

/* ============================================
   STICKY CALC BAR
   ============================================ */
.ft-sticky-calc {
  position: sticky;
  top: 64px;
  z-index: 100;
  background: linear-gradient(135deg, var(--ft-darker) 0%, var(--ft-dark) 100%);
  border-bottom: 1px solid rgba(167, 139, 250, 0.3);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.ft-sticky-calc-label {
  color: rgba(255,255,255,0.8);
  font-size: 0.9rem;
  font-weight: 500;
}
.ft-sticky-calc-btn {
  background: linear-gradient(135deg, var(--ft-primary) 0%, var(--ft-primary-dark) 100%);
  color: var(--ft-white);
  border: none;
  padding: 8px 20px;
  border-radius: var(--ft-radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--ft-transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}
.ft-sticky-calc-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.4);
}

/* ============================================
   UTILITIES
   ============================================ */
.ft-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.ft-section { padding: 60px 24px; }
.ft-section-alt { background: var(--ft-white); }
.ft-text-center { text-align: center; }
.ft-mt-2 { margin-top: 8px; }
.ft-mt-4 { margin-top: 16px; }
.ft-mt-6 { margin-top: 24px; }
.ft-mt-8 { margin-top: 32px; }
.ft-mb-2 { margin-bottom: 8px; }
.ft-mb-4 { margin-bottom: 16px; }
.ft-mb-6 { margin-bottom: 24px; }
.ft-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.ft-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.ft-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* ============================================
   CONTACT PAGE
   ============================================ */
.ft-contact-declaration {
  background: var(--ft-light);
  border: 2px solid var(--ft-border);
  border-radius: var(--ft-radius-lg);
  padding: 24px;
  margin: 32px 0;
}
.ft-contact-declaration p {
  font-size: 0.95rem;
  color: var(--ft-text);
  line-height: 1.7;
  margin: 0;
}
.ft-contact-email {
  font-size: 1.1rem;
  color: var(--ft-primary);
  font-weight: 600;
  text-decoration: none;
}
.ft-contact-email:hover { text-decoration: underline; }

/* ============================================
   404 PAGE
   ============================================ */
.ft-404 {
  text-align: center;
  padding: 100px 24px;
}
.ft-404-emoji {
  font-size: 4rem;
  margin-bottom: 20px;
}
.ft-404 h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--ft-dark);
  margin-bottom: 16px;
}
.ft-404 p {
  font-size: 1.1rem;
  color: var(--ft-text-light);
  margin-bottom: 32px;
}

/* ============================================
   CHARTS (Canvas/SVG)
   ============================================ */
.ft-chart-container {
  background: var(--ft-white);
  border: 1px solid var(--ft-border);
  border-radius: var(--ft-radius-lg);
  padding: 24px;
  margin: 24px 0;
}
.ft-chart-canvas {
  width: 100%;
  max-height: 400px;
}

/* ============================================
   TABLE
   ============================================ */
.ft-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 0.9rem;
}
.ft-table th, .ft-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--ft-border);
}
.ft-table th {
  background: var(--ft-light);
  font-weight: 600;
  color: var(--ft-dark);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.ft-table tr:hover { background: var(--ft-light); }

/* ============================================
   MOBILE
   ============================================ */
@media (max-width: 768px) {
  .ft-nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--ft-darker);
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    border-top: 1px solid rgba(167, 139, 250, 0.2);
  }
  .ft-nav-links.active { display: flex; }
  .ft-mobile-menu-btn { display: block; }
  .ft-hero-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .ft-hero h1 { font-size: 2rem; }
  .ft-hero-stats { grid-template-columns: 1fr; }
  .ft-footer-container {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .ft-grid-2, .ft-grid-3, .ft-grid-4 { grid-template-columns: 1fr; }
  .ft-form-grid { grid-template-columns: 1fr; }
  .ft-tabs { overflow-x: scroll; -webkit-overflow-scrolling: touch; }
  .ft-article-title { font-size: 1.5rem; }
  .ft-author-box { flex-direction: column; align-items: center; text-align: center; }
  .ft-sticky-calc { gap: 8px; padding: 10px 16px; }
  .ft-sticky-calc-label { font-size: 0.8rem; }
  .ft-sticky-calc-btn { padding: 6px 14px; font-size: 0.8rem; }
  a.ft-inline-tool { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .ft-footer-container { grid-template-columns: 1fr; }
  .ft-hero-stats { grid-template-columns: 1fr; }
}

/* ============================================
   PRINT
   ============================================ */
@media print {
  .ft-nav, .ft-footer, .ft-ad-slot, .ft-sticky-calc { display: none !important; }
  .ft-article { max-width: 100%; padding: 0; }
}

/* === Post Template V3.0 CSS Injection for ft === */

.ft-post-header {
  margin-bottom: 24px;
}
.ft-post-header h1 {
  font-size: 2.2rem;
  line-height: 1.3;
  margin-bottom: 12px;
}
.ft-post-meta {
  color: #666;
  font-size: 0.9rem;
  margin-bottom: 12px;
}
.ft-category-badge {
  display: inline-block;
  padding: 4px 12px;
  background: #e8f0fe;
  color: #1a73e8;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
}
.ft-article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}
.ft-post-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}
.ft-post-content {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #333;
}
.ft-post-content p {
  margin-bottom: 1.2em;
}
.ft-post-content h2 {
  font-size: 1.6rem;
  margin-top: 2em;
  margin-bottom: 0.8em;
}
.ft-post-content h3 {
  font-size: 1.3rem;
  margin-top: 1.6em;
  margin-bottom: 0.6em;
}
.ft-post-footer {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
  max-width: 800px;
  margin: 40px auto 0;
  padding: 0 20px;
}
@media (max-width: 768px) {
  .ft-post-footer {
    grid-template-columns: 1fr;
  }
}
.ft-related-articles h3,
.ft-recommended-tools h3 {
  font-size: 1.2rem;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid #eee;
}
.ft-related-list,
.ft-tool-rec-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.ft-related-card {
  display: block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  padding: 16px;
  background: #fff;
  border-radius: 8px;
  border: 1px solid #eee;
  transition: box-shadow 0.2s, transform 0.2s;
}
.ft-related-card:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}
.ft-related-card * {
  pointer-events: none;
}
.ft-related-card h4 {
  font-size: 1rem;
  margin-bottom: 6px;
  color: #1a73e8;
}
.ft-related-card p {
  font-size: 0.85rem;
  color: #666;
  margin: 0;
}
.ft-author-box {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: #f8f9fa;
  border-radius: 12px;
  margin: 32px 0;
  align-items: flex-start;
}
@media (max-width: 768px) {
  .ft-author-box {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}
.ft-author-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}
.ft-author-info {
  flex: 1;
}
.ft-author-name {
  font-size: 1.1rem;
  margin-bottom: 4px;
}
.ft-author-title {
  font-size: 0.9rem;
  color: #666;
  margin-bottom: 8px;
}
.ft-author-bio {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #444;
  margin-bottom: 8px;
}
.ft-author-location {
  font-size: 0.85rem;
  color: #888;
  margin-bottom: 8px;
}
.ft-author-bio-link {
  font-size: 0.9rem;
  color: #1a73e8;
  text-decoration: none;
}
.ft-author-bio-link:hover {
  text-decoration: underline;
}


/* ---- Navigation Container Fix ---- */
.ft-nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--ft-max-width, 1200px);
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
  box-sizing: border-box;
}


/* ---- Breadcrumb Align Fix ---- */
.ft-breadcrumb {
  max-width: var(--ft-max-width, 1200px);
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  width: 100%;
  box-sizing: border-box;
}


/* ---- Mobile Menu Active Fix ---- */
@media (max-width: 768px) {
  .ft-nav-links {
    display: none !important;
    flex-direction: column;
    width: 100%;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid #e5e7eb;
    padding: 1rem 1.5rem;
    gap: 0.5rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    z-index: 999;
  }
  .ft-nav-links.active {
    display: flex !important;
  }
  .ft-nav-links li {
    width: 100%;
    list-style: none;
  }
  .ft-nav-links a {
    display: block;
    padding: 0.75rem 0;
    border-bottom: 1px solid #f0f0f0;
    text-decoration: none;
    color: inherit;
  }
  .ft-nav-links a:last-child {
    border-bottom: none;
  }
}


/* ---- Hamburger Button Fix ---- */
.ft-nav-hamburger {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
}
@media (max-width: 768px) {
  .ft-nav-hamburger {
    display: block !important;
  }
}