/* ============================================
   DAILYPROTEIN.NET — Unified CSS System
   Prefix: dp-
   Layouts: Home-E, Tools-F, Blog-A, Post-B, Tool-C, About-D, Contact-A, FAQ-B
   ============================================ */

:root {
  --dp-primary: #2563eb;
  --dp-secondary: #f59e0b;
  --dp-accent: #10b981;
  --dp-dark: #1f2937;
  --dp-light: #f3f4f6;
  --dp-white: #ffffff;
  --dp-text: #374151;
  --dp-text-light: #6b7280;
  --dp-border: #e5e7eb;
  --dp-radius: 12px;
  --dp-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --dp-shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
  --dp-max-width: 1200px;
  --dp-gap: 24px;
  --dp-transition: all 0.3s ease;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--dp-text);
  line-height: 1.6;
  background: var(--dp-white);
}

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

/* ============================================
   NAVIGATION
   ============================================ */
.dp-nav {
  background: var(--dp-dark);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--dp-shadow);
}
.dp-nav-container {
  max-width: var(--dp-max-width);
  margin: 0 auto;
  padding: 0 var(--dp-gap);
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}
.dp-nav-logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--dp-white);
  text-decoration: none;
  letter-spacing: -0.5px;
}
.dp-nav-logo span { color: var(--dp-secondary); }
.dp-nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}
.dp-nav-links a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--dp-transition);
}
.dp-nav-links a:hover { color: var(--dp-secondary); }
.dp-nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--dp-white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ============================================
   AD SLOTS
   ============================================ */
.dp-ad-slot {
  display: none;
  width: 100%;
  height: 250px;
  background: var(--dp-light);
  border: 2px dashed var(--dp-border);
  border-radius: var(--dp-radius);
  align-items: center;
  justify-content: center;
  color: var(--dp-text-light);
  font-size: 0.9rem;
  margin: var(--dp-gap) 0;
  overflow: hidden;
}
.dp-ad-slot.has-content { display: flex; }
.dp-ad-slot ins { display: block; width: 100%; height: 100%; }

/* ============================================
   CONTAINER
   ============================================ */
.dp-container {
  max-width: var(--dp-max-width);
  margin: 0 auto;
  padding: 0 var(--dp-gap);
}
.dp-section {
  padding: 64px 0;
}
.dp-section-alt {
  background: var(--dp-light);
}

/* ============================================
   HERO (Home-E Community Plaza)
   ============================================ */
.dp-hero {
  background: linear-gradient(135deg, var(--dp-dark) 0%, #111827 100%);
  color: var(--dp-white);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.dp-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(37,99,235,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.dp-hero-content { position: relative; z-index: 1; }
.dp-hero h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.2;
}
.dp-hero p {
  font-size: 1.25rem;
  color: rgba(255,255,255,0.8);
  max-width: 600px;
  margin: 0 auto 32px;
}
.dp-hero-cta {
  display: inline-flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
}
.dp-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--dp-radius);
  font-weight: 600;
  text-decoration: none;
  transition: var(--dp-transition);
  border: none;
  cursor: pointer;
  font-size: 1rem;
}
.dp-btn-primary {
  background: var(--dp-primary);
  color: var(--dp-white);
}
.dp-btn-primary:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
  box-shadow: var(--dp-shadow-lg);
}
.dp-btn-secondary {
  background: rgba(255,255,255,0.1);
  color: var(--dp-white);
  border: 1px solid rgba(255,255,255,0.2);
}
.dp-btn-secondary:hover {
  background: rgba(255,255,255,0.2);
}

/* ============================================
   CARDS & CLICKABLE CARDS
   ============================================ */
.dp-card {
  background: var(--dp-white);
  border-radius: var(--dp-radius);
  box-shadow: var(--dp-shadow);
  padding: 24px;
  transition: var(--dp-transition);
  border: 1px solid var(--dp-border);
}
.dp-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--dp-shadow-lg);
}

/* 整卡片可点击 */
a.dp-article-card,
a.dp-tool-card {
  display: block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}
a.dp-article-card:hover,
a.dp-tool-card:hover {
  text-decoration: none;
}
a.dp-article-card *,
a.dp-tool-card * {
  pointer-events: none;
}

.dp-article-card {
  background: var(--dp-white);
  border-radius: var(--dp-radius);
  overflow: hidden;
  box-shadow: var(--dp-shadow);
  transition: var(--dp-transition);
  border: 1px solid var(--dp-border);
}
.dp-article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--dp-shadow-lg);
}
.dp-article-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--dp-light);
}
.dp-article-card-body { padding: 20px; }
.dp-article-card-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(37,99,235,0.1);
  color: var(--dp-primary);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 20px;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.dp-article-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.3;
  color: var(--dp-dark);
}
.dp-article-card p {
  font-size: 0.9rem;
  color: var(--dp-text-light);
  line-height: 1.5;
}
.dp-article-card-meta {
  display: flex;
  gap: 12px;
  margin-top: 12px;
  font-size: 0.8rem;
  color: var(--dp-text-light);
}

.dp-tool-card {
  background: var(--dp-white);
  border-radius: var(--dp-radius);
  padding: 24px;
  box-shadow: var(--dp-shadow);
  transition: var(--dp-transition);
  border: 1px solid var(--dp-border);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.dp-tool-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--dp-shadow-lg);
  border-color: var(--dp-primary);
}
.dp-tool-icon {
  width: 48px;
  height: 48px;
  background: rgba(37,99,235,0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}
.dp-tool-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dp-dark);
}
.dp-tool-card p {
  font-size: 0.9rem;
  color: var(--dp-text-light);
  flex-grow: 1;
}
.dp-tool-card .dp-btn {
  align-self: flex-start;
  padding: 10px 20px;
  font-size: 0.9rem;
}

/* ============================================
   GRID SYSTEMS
   ============================================ */
.dp-grid {
  display: grid;
  gap: var(--dp-gap);
}
.dp-grid-2 { grid-template-columns: repeat(2, 1fr); }
.dp-grid-3 { grid-template-columns: repeat(3, 1fr); }
.dp-grid-4 { grid-template-columns: repeat(4, 1fr); }
.dp-grid-6 { grid-template-columns: repeat(6, 1fr); }

/* ============================================
   BLOG HOME (Layout A: Magazine Cover)
   ============================================ */
.dp-blog-hero {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  margin-bottom: 48px;
  align-items: center;
}
.dp-blog-hero-featured {
  position: relative;
  border-radius: var(--dp-radius);
  overflow: hidden;
  box-shadow: var(--dp-shadow-lg);
}
.dp-blog-hero-featured img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}
.dp-blog-hero-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  padding: 32px;
  color: var(--dp-white);
}
.dp-blog-hero-overlay h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.dp-blog-hero-overlay p { opacity: 0.9; }
.dp-blog-hero-sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.dp-blog-hero-sidebar .dp-article-card {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 16px;
}
.dp-blog-hero-sidebar .dp-article-card-image {
  width: 120px;
  height: 90px;
  flex-shrink: 0;
  border-radius: 8px;
}
.dp-blog-hero-sidebar .dp-article-card-body { padding: 12px; }
.dp-blog-hero-sidebar .dp-article-card h3 { font-size: 1rem; }

.dp-magazine-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--dp-gap);
}

/* ============================================
   TOOLS HOME (Layout F: Comparison Review)
   ============================================ */
.dp-tools-compare-header {
  text-align: center;
  margin-bottom: 48px;
}
.dp-tools-compare-header h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--dp-dark);
  margin-bottom: 12px;
}
.dp-tools-compare-table {
  background: var(--dp-white);
  border-radius: var(--dp-radius);
  box-shadow: var(--dp-shadow);
  overflow: hidden;
  border: 1px solid var(--dp-border);
}
.dp-tools-compare-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 16px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--dp-border);
  align-items: center;
}
.dp-tools-compare-row.header {
  background: var(--dp-dark);
  color: var(--dp-white);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.dp-tools-compare-row:last-child { border-bottom: none; }
.dp-tools-compare-row .dp-tool-name {
  font-weight: 700;
  color: var(--dp-dark);
  display: flex;
  align-items: center;
  gap: 12px;
}
.dp-tools-compare-row .dp-tool-name .dp-tool-icon {
  width: 36px;
  height: 36px;
  font-size: 1.2rem;
}

/* ============================================
   POST LAYOUT (Layout B: Data Dashboard)
   ============================================ */
.dp-post-header {
  background: var(--dp-dark);
  color: var(--dp-white);
  padding: 48px 0;
  margin-bottom: 48px;
}
.dp-post-header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
}
.dp-post-meta {
  display: flex;
  gap: 16px;
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
}
.dp-post-content {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--dp-text);
}
.dp-post-content h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--dp-dark);
  margin: 48px 0 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--dp-border);
}
.dp-post-content h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--dp-dark);
  margin: 32px 0 16px;
}
.dp-post-content p { margin-bottom: 20px; }
.dp-post-content ul, .dp-post-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
}
.dp-post-content li { margin-bottom: 8px; }
.dp-post-content blockquote {
  border-left: 4px solid var(--dp-primary);
  padding-left: 20px;
  margin: 24px 0;
  font-style: italic;
  color: var(--dp-text-light);
}
.dp-post-content img {
  border-radius: var(--dp-radius);
  margin: 24px 0;
  box-shadow: var(--dp-shadow);
}

/* 尾部两栏 */
.dp-post-tail {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
  margin-top: 64px;
  padding-top: 48px;
  border-top: 2px solid var(--dp-border);
}
.dp-post-tail h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--dp-dark);
}
.dp-related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.dp-recommended-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

/* ============================================
   INLINE TOOL CARDS
   ============================================ */
a.dp-inline-tool {
  display: flex;
  gap: 16px;
  background: var(--dp-white);
  border: 1px solid var(--dp-border);
  border-radius: var(--dp-radius);
  padding: 20px;
  margin: 24px 0;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: var(--dp-transition);
  box-shadow: var(--dp-shadow);
}
a.dp-inline-tool:hover {
  border-color: var(--dp-primary);
  box-shadow: var(--dp-shadow-lg);
  transform: translateY(-2px);
}
a.dp-inline-tool * { pointer-events: none; }
.dp-inline-tool-icon {
  width: 48px;
  height: 48px;
  background: rgba(37,99,235,0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}
.dp-inline-tool-content { flex-grow: 1; }
.dp-inline-tool-title {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--dp-dark);
  margin-bottom: 4px;
}
.dp-inline-tool-desc {
  font-size: 0.9rem;
  color: var(--dp-text-light);
  margin-bottom: 4px;
}
.dp-inline-tool-privacy {
  font-size: 0.75rem;
  color: var(--dp-accent);
  font-weight: 500;
}

/* ============================================
   TOOL PAGES (Layout C: Story Narrative)
   ============================================ */
.dp-tool-hero {
  background: linear-gradient(135deg, var(--dp-primary) 0%, #1d4ed8 100%);
  color: var(--dp-white);
  padding: 64px 0;
  text-align: center;
}
.dp-tool-hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
}
.dp-tool-hero p {
  font-size: 1.15rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}
.dp-tool-container {
  background: var(--dp-white);
  border-radius: var(--dp-radius);
  box-shadow: var(--dp-shadow-lg);
  padding: 40px;
  margin-top: -40px;
  position: relative;
  z-index: 10;
  border: 1px solid var(--dp-border);
}
.dp-form-group { margin-bottom: 24px; }
.dp-form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--dp-dark);
}
.dp-form-group input,
.dp-form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--dp-border);
  border-radius: 8px;
  font-size: 1rem;
  transition: var(--dp-transition);
}
.dp-form-group input:focus,
.dp-form-group select:focus {
  outline: none;
  border-color: var(--dp-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.dp-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.dp-chart-container {
  width: 100%;
  height: 300px;
  margin: 24px 0;
  background: var(--dp-light);
  border-radius: var(--dp-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dp-text-light);
}
.dp-results-panel {
  background: rgba(37,99,235,0.05);
  border: 1px solid rgba(37,99,235,0.2);
  border-radius: var(--dp-radius);
  padding: 24px;
  margin-top: 24px;
}
.dp-results-panel h3 {
  color: var(--dp-primary);
  font-size: 1.25rem;
  margin-bottom: 16px;
}
.dp-history-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 24px;
}
.dp-history-table th,
.dp-history-table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--dp-border);
}
.dp-history-table th {
  font-weight: 600;
  color: var(--dp-dark);
  background: var(--dp-light);
}

/* ============================================
   ABOUT (Layout D: Community Plaza)
   ============================================ */
.dp-about-hero {
  text-align: center;
  padding: 64px 0;
  background: var(--dp-light);
}
.dp-about-hero img {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 24px;
  border: 4px solid var(--dp-white);
  box-shadow: var(--dp-shadow-lg);
}
.dp-about-hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--dp-dark);
  margin-bottom: 8px;
}
.dp-about-hero .dp-title {
  color: var(--dp-primary);
  font-weight: 600;
  font-size: 1.1rem;
  margin-bottom: 16px;
}
.dp-credentials {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 48px 0;
}
.dp-credential-card {
  background: var(--dp-white);
  padding: 24px;
  border-radius: var(--dp-radius);
  text-align: center;
  box-shadow: var(--dp-shadow);
  border: 1px solid var(--dp-border);
}
.dp-credential-card .dp-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}
.dp-credential-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dp-dark);
  margin-bottom: 4px;
}
.dp-credential-card p {
  font-size: 0.85rem;
  color: var(--dp-text-light);
}

/* ============================================
   CONTACT (Layout A: Minimal Cards)
   ============================================ */
.dp-contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}
.dp-contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.dp-contact-card {
  background: var(--dp-white);
  padding: 24px;
  border-radius: var(--dp-radius);
  box-shadow: var(--dp-shadow);
  border: 1px solid var(--dp-border);
}
.dp-contact-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--dp-dark);
}
.dp-contact-card p { color: var(--dp-text-light); }
.dp-contact-disclaimer {
  background: var(--dp-light);
  border-left: 4px solid var(--dp-secondary);
  padding: 24px;
  border-radius: 0 var(--dp-radius) var(--dp-radius) 0;
  margin-top: 32px;
}
.dp-contact-disclaimer p {
  font-size: 0.9rem;
  color: var(--dp-text-light);
  line-height: 1.6;
}

/* ============================================
   FAQ (Layout B: Minimal Cards)
   ============================================ */
.dp-faq-item {
  background: var(--dp-white);
  border: 1px solid var(--dp-border);
  border-radius: var(--dp-radius);
  margin-bottom: 16px;
  overflow: hidden;
}
.dp-faq-question {
  padding: 20px 24px;
  font-weight: 700;
  color: var(--dp-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--dp-transition);
}
.dp-faq-question:hover { background: var(--dp-light); }
.dp-faq-question::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--dp-primary);
}
.dp-faq-question.active::after { content: '−'; }
.dp-faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.dp-faq-answer.active {
  padding: 0 24px 20px;
  max-height: 500px;
}
.dp-faq-answer p { color: var(--dp-text-light); line-height: 1.6; }

/* ============================================
   FOOTER
   ============================================ */
.dp-footer {
  background: var(--dp-dark);
  color: rgba(255,255,255,0.7);
  padding: 48px 0 24px;
  margin-top: 80px;
}
.dp-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
.dp-footer h4 {
  color: var(--dp-white);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.dp-footer a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  display: block;
  margin-bottom: 8px;
  font-size: 0.9rem;
  transition: var(--dp-transition);
}
.dp-footer a:hover { color: var(--dp-secondary); }
.dp-footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
}

/* ============================================
   BREADCRUMBS
   ============================================ */
.dp-breadcrumbs {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 0.85rem;
  color: var(--dp-text-light);
  margin-bottom: 24px;
}
.dp-breadcrumbs a {
  color: var(--dp-primary);
  text-decoration: none;
}
.dp-breadcrumbs a:hover { text-decoration: underline; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .dp-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .dp-magazine-grid { grid-template-columns: repeat(2, 1fr); }
  .dp-credentials { grid-template-columns: repeat(2, 1fr); }
  .dp-footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .dp-nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--dp-dark);
    flex-direction: column !important;
    padding: 16px var(--dp-gap);
    gap: 0 !important;
    border-top: 1px solid rgba(255,255,255,0.1);
  }
  .dp-nav-links.active { display: flex; }
  .dp-nav-links a {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  .dp-nav-toggle { display: block; }

  .dp-hero h1 { font-size: 2rem; }
  .dp-hero p { font-size: 1rem; }

  .dp-grid-2,
  .dp-grid-3,
  .dp-grid-4,
  .dp-grid-6 { grid-template-columns: 1fr; }

  .dp-blog-hero { grid-template-columns: 1fr; }
  .dp-blog-hero-sidebar .dp-article-card { flex-direction: column; }
  .dp-blog-hero-sidebar .dp-article-card-image { width: 100%; height: 160px; }
  .dp-magazine-grid { grid-template-columns: 1fr; }

  .dp-tools-compare-row { grid-template-columns: 1fr; gap: 8px; }
  .dp-tools-compare-row.header { display: none; }

  .dp-post-header h1 { font-size: 1.75rem; }
  .dp-post-tail { grid-template-columns: 1fr; }

  .dp-contact-grid { grid-template-columns: 1fr; }
  .dp-credentials { grid-template-columns: 1fr; }
  .dp-footer-grid { grid-template-columns: 1fr; }

  .dp-form-row { grid-template-columns: 1fr; }

  a.dp-inline-tool { flex-direction: column; }
}

@media (max-width: 480px) {
  :root { --dp-gap: 16px; }
  .dp-section { padding: 40px 0; }
  .dp-tool-container { padding: 24px; }
}

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

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

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

/* ---- Breadcrumb Align Fix ---- */
.dp-breadcrumb {
  max-width: var(--dp-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) {
  .dp-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;
  }
  .dp-nav-links.active {
    display: flex !important;
  }
  .dp-nav-links li {
    width: 100%;
    list-style: none;
  }
  .dp-nav-links a {
    display: block;
    padding: 0.75rem 0;
    border-bottom: 1px solid #f0f0f0;
    text-decoration: none;
    color: inherit;
  }
  .dp-nav-links a:last-child {
    border-bottom: none;
  }
}

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