/* =======================================================
   影子 - Editorial Tech Magazine Stylesheet
   Bold Headlines, Serif-Sans Combo, Magazine Columns
   ======================================================= */

:root {
  --bg-dark: #0D1117;
  --bg-card: #161B22;
  --bg-card-hover: #21262D;
  --border-line: #30363D;
  --border-accent: #E3B341;
  
  --accent-gold: #E3B341;
  --accent-cyan: #38BDF8;
  --accent-purple: #A78BFA;
  --accent-crimson: #F85149;
  --accent-emerald: #39D353;
  
  --text-heading: #F0F6FC;
  --text-body: #C9D1D9;
  --text-muted: #8B949E;
  --text-dim: #6E7681;
  
  --font-serif: Georgia, "Playfair Display", "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", Consolas, monospace;

  --max-width: 1240px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-dark);
  color: var(--text-body);
  font-family: var(--font-sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  position: relative;
  background: var(--bg-dark);
  border-top: 4px solid var(--accent-gold);
}

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

ul {
  list-style: none;
}

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

/* Typography Hierarchy */
h1, h2, h3, h4, .serif-font {
  font-family: var(--font-serif);
  color: var(--text-heading);
  letter-spacing: -0.02em;
  font-weight: 700;
}

/* Magazine Kicker Badge */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-gold);
  margin-bottom: 0.75rem;
}

.kicker::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--accent-gold);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-gold);
  color: #0D1117;
  box-shadow: 0 4px 14px rgba(227, 179, 65, 0.25);
}

.btn-primary:hover {
  background: #f0c253;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(227, 179, 65, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-heading);
  border: 1px solid var(--border-line);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent-gold);
  transform: translateY(-2px);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Magazine Header & Masthead */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 17, 23, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-line);
}

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.4rem 0;
  font-size: 0.75rem;
  color: var(--text-dim);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.75rem;
}

.masthead-logo {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 900;
  color: var(--text-heading);
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  letter-spacing: -0.03em;
}

.masthead-logo span.sub {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-gold);
  letter-spacing: 0.15em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-link:hover {
  color: var(--accent-gold);
}

.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-heading);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Section Header (Magazine Style) */
.magazine-section-header {
  border-top: 2px solid var(--border-accent);
  padding-top: 1.25rem;
  margin-bottom: 3rem;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.magazine-section-header .header-left h2 {
  font-size: 2.25rem;
  line-height: 1.2;
}

.magazine-section-header .section-num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Magazine Hero Featured Story Section */
.hero {
  padding: 3.5rem 0 4.5rem;
  border-bottom: 1px solid var(--border-line);
}

.hero-magazine-grid {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 3.5rem;
  align-items: stretch;
}

.featured-story {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-right: 1px solid var(--border-line);
  padding-right: 3.5rem;
}

.featured-story h1 {
  font-size: 3.5rem;
  line-height: 1.08;
  margin-bottom: 1.5rem;
}

.lead-text {
  font-size: 1.15rem;
  color: var(--text-body);
  line-height: 1.7;
  margin-bottom: 2rem;
}

.drop-cap::first-letter {
  font-family: var(--font-serif);
  font-size: 3.6rem;
  float: left;
  line-height: 0.8;
  padding-right: 0.75rem;
  color: var(--accent-gold);
  font-weight: 900;
}

.editorial-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.825rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-line);
  margin-top: 2rem;
}

/* Right Editorial Network Dashboard */
.editorial-sidebar {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.dashboard-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-line);
  margin-bottom: 1.5rem;
}

.dashboard-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--text-heading);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-emerald);
  text-transform: uppercase;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.metric-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-line);
  padding: 0.85rem;
  text-align: center;
  border-radius: var(--radius-sm);
}

.metric-val {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent-gold);
}

.metric-lbl {
  font-size: 0.725rem;
  color: var(--text-dim);
  text-transform: uppercase;
}

.node-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.node-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0.85rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  transition: var(--transition);
}

.node-item:hover {
  border-color: var(--accent-gold);
}

.ping-val {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-emerald);
}

/* Magazine Columns Section (Bento Grid) */
.section {
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--border-line);
}

.magazine-columns-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.column-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  position: relative;
}

.column-card:hover {
  border-color: var(--accent-gold);
  transform: translateY(-3px);
  background: var(--bg-card-hover);
}

.column-card h3 {
  font-size: 1.4rem;
  line-height: 1.3;
  margin: 0.75rem 0 0.85rem;
}

.column-card p {
  color: var(--text-muted);
  font-size: 0.925rem;
  line-height: 1.65;
}

/* Scenarios Magazine Section */
.magazine-columns-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

.scenario-box {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-top: 3px solid var(--accent-gold);
  border-radius: var(--radius-md);
  padding: 2.25rem;
}

.scenario-box h3 {
  font-size: 1.5rem;
  margin-bottom: 0.85rem;
}

.tag-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.tag-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-line);
  padding: 0.35rem 0.75rem;
  border-radius: 3px;
  font-size: 0.825rem;
  color: var(--text-body);
}

/* Pricing Section (Editorial Magazine Style) */
.pricing-magazine-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  align-items: stretch;
}

.pricing-column {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

.pricing-column.featured {
  border: 2px solid var(--accent-gold);
  background: linear-gradient(180deg, rgba(227, 179, 65, 0.08), #161B22);
}

.editor-badge {
  position: absolute;
  top: -12px;
  left: 2rem;
  background: var(--accent-gold);
  color: #0D1117;
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.85rem;
  border-radius: 2px;
}

.plan-name {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 0.4rem;
}

.plan-price {
  font-family: var(--font-serif);
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--text-heading);
  margin: 1.25rem 0;
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
}

.plan-price span {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 400;
}

.feature-list {
  margin: 1.5rem 0 2rem;
  flex-grow: 1;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.85rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.feature-list li::before {
  content: "✓";
  color: var(--accent-emerald);
  font-weight: 800;
}

/* Articles Section (Magazine Grid) */
.editorial-articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.article-magazine-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.article-magazine-card:hover {
  border-color: var(--accent-gold);
  transform: translateY(-3px);
}

.article-magazine-card h3 {
  font-size: 1.25rem;
  line-height: 1.35;
  margin-bottom: 0.85rem;
}

.article-magazine-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.775rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding-top: 1rem;
  border-top: 1px solid var(--border-line);
}

.read-link {
  color: var(--accent-gold);
  font-weight: 700;
}

/* Testimonials Pull Quotes */
.pullquote-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.pullquote-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  padding: 2rem;
  position: relative;
}

.quote-mark {
  font-family: var(--font-serif);
  font-size: 4rem;
  line-height: 0.5;
  color: var(--accent-gold);
  opacity: 0.4;
  margin-bottom: 1rem;
}

.quote-text {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-style: italic;
  color: var(--text-body);
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.author-meta {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-heading);
  text-transform: uppercase;
}

.author-role {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-weight: 400;
}

/* FAQ Accordion */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
}

.faq-row {
  border-bottom: 1px solid var(--border-line);
  margin-bottom: 0.5rem;
}

.faq-btn {
  width: 100%;
  padding: 1.25rem 0;
  background: none;
  border: none;
  color: var(--text-heading);
  font-family: var(--font-serif);
  font-size: 1.2rem;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.faq-btn:hover {
  color: var(--accent-gold);
}

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-row.active .faq-body {
  max-height: 300px;
  padding-bottom: 1.25rem;
}

/* Footer Masthead */
.footer {
  background: #090D12;
  border-top: 2px solid var(--border-line);
  padding: 4.5rem 0 2.5rem;
  font-size: 0.875rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-masthead {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--text-heading);
  margin-bottom: 0.75rem;
}

.footer-col h4 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--text-heading);
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-col ul li {
  margin-bottom: 0.65rem;
}

.footer-col ul li a {
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--accent-gold);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-line);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
  color: var(--text-dim);
}

.friendly-links {
  display: flex;
  gap: 1.75rem;
  flex-wrap: wrap;
  justify-content: center;
}

.friendly-links a {
  color: var(--text-muted);
}

.friendly-links a:hover {
  color: var(--accent-gold);
}

/* Article Page Layout */
.article-masthead-header {
  padding: 3.5rem 0 2rem;
  max-width: 840px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
}

.article-content {
  max-width: 840px;
  margin: 0 auto 4.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  padding: 3.5rem 3rem;
}

.article-content h1 {
  font-size: 2.75rem;
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

.article-content h2 {
  font-size: 1.75rem;
  margin: 2.5rem 0 1rem;
  border-bottom: 1px solid var(--border-line);
  padding-bottom: 0.5rem;
}

.article-content h3 {
  font-size: 1.3rem;
  margin: 1.75rem 0 0.85rem;
}

.article-content p {
  margin-bottom: 1.35rem;
  color: var(--text-body);
  font-size: 1.05rem;
  line-height: 1.8;
}

.article-content ul, .article-content ol {
  margin: 1.25rem 0 1.75rem 1.75rem;
  color: var(--text-body);
}

.article-content li {
  margin-bottom: 0.65rem;
}

.article-cta-box {
  background: rgba(227, 179, 65, 0.06);
  border: 1px solid var(--accent-gold);
  border-radius: var(--radius-md);
  padding: 2.25rem;
  text-align: center;
  margin: 3rem 0;
}

.article-cta-box h3 {
  margin-top: 0;
  color: var(--text-heading);
}

.styled-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.75rem 0;
  font-size: 0.925rem;
  display: block;
  overflow-x: auto;
}

.styled-table th, .styled-table td {
  padding: 0.85rem 1.15rem;
  border: 1px solid var(--border-line);
  text-align: left;
}

.styled-table th {
  background: rgba(255, 255, 255, 0.04);
  font-family: var(--font-serif);
  color: var(--text-heading);
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, ::before, ::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-magazine-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .featured-story {
    border-right: none;
    padding-right: 0;
    border-bottom: 1px solid var(--border-line);
    padding-bottom: 3rem;
  }

  .magazine-columns-3, .pricing-magazine-grid, .editorial-articles-grid, .pullquote-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .top-bar {
    display: none;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 4.75rem;
    left: 0;
    width: 100%;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border-line);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.25rem;
  }

  .nav-links.active {
    display: flex;
  }

  .hamburger {
    display: block;
  }

  .featured-story h1 {
    font-size: 2.5rem;
  }

  .magazine-columns-3, .magazine-columns-2, .pricing-magazine-grid, .editorial-articles-grid, .pullquote-grid {
    grid-template-columns: 1fr;
  }

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

  .article-content {
    padding: 2rem 1.5rem;
  }

  .article-content h1 {
    font-size: 2rem;
  }
}