/* ==========================================================
   Oufushang — Restrained Editorial Light Theme
   Warm ivory canvas · ink text · single pine-green accent
   Flat surfaces · hairline borders · no gradients/glow/neon
   (class names kept as dc-* so all pages reskin unchanged)
   ========================================================== */

:root {
  /* Accent — LingXing brand blue #3572ff */
  --dc-primary: #3572ff;
  --dc-primary-hover: #2554fe;
  --dc-on-primary: #ffffff;
  --dc-accent-soft: rgba(53, 114, 255, 0.07);
  --dc-accent-line: rgba(53, 114, 255, 0.20);
  --dc-link: #3572ff;

  /* Brand gradients — restrained blue, used sparingly */
  --dc-grad-blue: linear-gradient(135deg, #3572ff 0%, #2554fe 100%);
  --dc-grad-hero-bg: linear-gradient(180deg, #f3f6fd 0%, #ffffff 60%);
  --dc-grad-cta-band: linear-gradient(120deg, #2554fe 0%, #3572ff 55%, #5a8bff 100%);

  /* Back-compat aliases — old tokens still referenced inline. */
  --dc-green: #2554fe;
  --dc-green-hover: #1a45e0;
  --dc-magenta: #2554fe;
  --dc-magenta-light: #4f7bff;
  --dc-gradient-hero: var(--dc-grad-hero-bg);
  --dc-gradient-cta: var(--dc-grad-blue);
  --dc-gradient-magenta: var(--dc-surface);
  --dc-gradient-card: var(--dc-surface);
  --dc-gradient-featured: var(--dc-surface);
  --dc-gradient-green: var(--dc-primary);

  /* Surfaces — pure white canvas, cool light-gray bands */
  --dc-canvas: #ffffff;
  --dc-surface: #ffffff;
  --dc-surface-alt: #f4f6fb;   /* cool light band */
  --dc-surface-card: #ffffff;
  --dc-surface-elevated: #ffffff;
  --dc-surface-sunken: #f5f7fa;
  --dc-black: #1a2035;
  --dc-hairline: #e7eaf2;      /* cool hairline */
  --dc-hairline-strong: #d6dbe8;

  /* Text — deep navy headings, slate body */
  --dc-ink: #1a2035;
  --dc-ink-secondary: #3a4057;
  --dc-ink-muted: #8a90a3;
  --dc-ink-dark: #1a2035;

  /* Shadows — soft, cool, gives cards real depth */
  --dc-shadow-sm: 0 2px 8px rgba(26, 38, 90, 0.05);
  --dc-shadow-md: 0 6px 20px rgba(26, 38, 90, 0.08);
  --dc-shadow-lg: 0 16px 44px rgba(26, 38, 90, 0.12);
  --dc-shadow-glow: none;

  /* Typography — clean system sans, confident bold headings */
  --dc-font-display: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --dc-font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;

  /* Spacing */
  --dc-section-gap: 6.5rem;
  --dc-container: 1200px;
  --dc-container-narrow: 780px;

  /* Radius — small on controls, soft on cards */
  --dc-radius-sm: 4px;
  --dc-radius-md: 6px;
  --dc-radius-lg: 12px;
  --dc-radius-xl: 16px;
  --dc-radius-full: 9999px;
}

/* ---------- RESET & BASE ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--dc-font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--dc-ink);
  background: var(--dc-canvas);
  min-height: 100vh;
}

img { max-width: 100%; height: auto; }
a { color: var(--dc-link); text-decoration: none; transition: color .15s; }
a:hover { color: var(--dc-primary-hover); opacity: 1; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6 { margin: 0; }

/* ---------- LAYOUT ---------- */
.dc-container {
  max-width: var(--dc-container);
  margin: 0 auto;
  padding: 0 24px;
}

.dc-container-narrow {
  max-width: var(--dc-container-narrow);
  margin: 0 auto;
  padding: 0 24px;
}

.dc-section {
  padding: var(--dc-section-gap) 0;
}

/* ---------- NAV ---------- */
.dc-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: #ffffff;
  border-bottom: 1px solid var(--dc-hairline);
}

.dc-nav-inner {
  max-width: var(--dc-container);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  height: 64px;
  gap: 32px;
}

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

.dc-nav-logo img {
  width: 28px;
  height: 28px;
  border-radius: var(--dc-radius-sm);
}

.dc-nav-logo span {
  font-family: var(--dc-font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--dc-ink);
  letter-spacing: 0;
}

.dc-nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 1;
}

.dc-nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--dc-ink-secondary);
  padding: 8px 14px;
  border-radius: var(--dc-radius-sm);
  transition: color .15s, background .15s;
}

.dc-nav-links a:hover,
.dc-nav-links a.active {
  color: var(--dc-ink);
  background: transparent;
}

.dc-nav-links a.active {
  color: var(--dc-primary);
}

.dc-nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}

.dc-nav-cta {
  font-family: var(--dc-font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--dc-on-primary);
  background: var(--dc-primary);
  padding: 9px 20px;
  border-radius: var(--dc-radius-md);
  transition: background .15s;
  white-space: nowrap;
}

.dc-nav-cta:hover {
  background: var(--dc-primary-hover);
  box-shadow: none;
  color: var(--dc-on-primary);
  opacity: 1;
}

.dc-lang-switch { position: relative; }

.dc-lang-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  color: var(--dc-ink-secondary);
  padding: 7px 12px;
  border-radius: var(--dc-radius-md);
  cursor: pointer;
  background: none;
  border: 1px solid var(--dc-hairline);
  transition: border-color .15s, color .15s;
}

.dc-lang-btn:hover {
  border-color: var(--dc-hairline-strong);
  color: var(--dc-ink);
}

.dc-lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 4px;
  background: var(--dc-surface);
  border: 1px solid var(--dc-hairline);
  border-radius: var(--dc-radius-md);
  padding: 4px;
  min-width: 120px;
  box-shadow: var(--dc-shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: opacity .15s, visibility .15s;
}

.dc-lang-switch:hover .dc-lang-dropdown {
  opacity: 1;
  visibility: visible;
}

.dc-lang-dropdown a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: var(--dc-radius-sm);
  font-size: 0.8125rem;
  color: var(--dc-ink-secondary);
}

.dc-lang-dropdown a:hover,
.dc-lang-dropdown a.active {
  background: var(--dc-accent-soft);
  color: var(--dc-primary);
}

.dc-lang-code {
  font-size: 0.6875rem;
  opacity: .55;
}

.dc-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
}

.dc-mobile-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--dc-ink);
  border-radius: 2px;
  transition: all .2s;
}

@media (max-width: 768px) {
  .dc-nav-links,
  .dc-nav-right { display: none; }
  .dc-mobile-toggle { display: flex; }
}

/* ---------- HERO ---------- */
.dc-hero {
  background: var(--dc-grad-hero-bg);
  padding: 140px 0 84px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--dc-hairline);
}

.dc-hero::before { content: none; }

/* soft single blue halo behind the dashboard — restrained, not neon */
.dc-hero::after {
  content: '';
  position: absolute;
  top: 8%;
  right: -8%;
  width: 540px;
  height: 540px;
  background: radial-gradient(circle, rgba(37, 84, 254, 0.12) 0%, transparent 68%);
  pointer-events: none;
  z-index: 0;
}

.dc-hero-split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
  position: relative;
  z-index: 1;
}

@media (max-width: 900px) {
  .dc-hero-split { grid-template-columns: 1fr; gap: 40px; }
}

.dc-hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
}

.dc-hero-badge {
  font-family: var(--dc-font-body);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: none;
  letter-spacing: 0;
  padding: 5px 12px;
  border-radius: var(--dc-radius-full);
  background: var(--dc-surface);
  border: 1px solid var(--dc-hairline);
  color: var(--dc-ink-secondary);
}

.dc-hero-title {
  font-family: var(--dc-font-display);
  font-size: clamp(2.1rem, 4.2vw, 3.25rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--dc-ink);
  margin-bottom: 22px;
}

/* brand-blue keyword highlight inside headings */
.dc-hl { color: var(--dc-primary); }

.dc-hero-lead {
  font-size: 1.075rem;
  line-height: 1.7;
  color: var(--dc-ink-secondary);
  margin-bottom: 32px;
  max-width: 520px;
}

.dc-hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ---------- BUTTONS ---------- */
.dc-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--dc-font-body);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 12px 24px;
  border-radius: var(--dc-radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
  white-space: nowrap;
}

.dc-btn:hover { opacity: 1; }

.dc-btn-primary {
  background: var(--dc-primary);
  color: var(--dc-on-primary);
  box-shadow: none;
}

.dc-btn-primary:hover {
  background: var(--dc-primary-hover);
  box-shadow: none;
  transform: none;
  color: var(--dc-on-primary);
}

.dc-btn-green {
  background: var(--dc-primary);
  color: var(--dc-on-primary);
}

.dc-btn-green:hover {
  background: var(--dc-primary-hover);
  box-shadow: none;
  transform: none;
}

.dc-btn-ghost {
  background: transparent;
  color: var(--dc-ink);
  border: 1px solid var(--dc-hairline-strong);
}

.dc-btn-ghost:hover {
  border-color: var(--dc-ink);
  background: transparent;
  color: var(--dc-ink);
}

.dc-btn-on-dark {
  background: var(--dc-ink);
  color: #fff;
}

.dc-btn-on-dark:hover {
  background: #000;
  transform: none;
}

.dc-btn-sm {
  font-size: 0.8125rem;
  padding: 9px 18px;
}

.dc-btn .fa-arrow-right {
  font-size: 0.75em;
  transition: transform .2s;
}

.dc-btn:hover .fa-arrow-right {
  transform: translateX(3px);
}

/* ---------- SECTION LABEL (eyebrow) ---------- */
.dc-label {
  font-family: var(--dc-font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  color: var(--dc-primary);
  margin-bottom: 12px;
  display: block;
}

.dc-label-light { color: var(--dc-primary); }

/* ---------- SECTION HEADER ---------- */
.dc-section-header {
  text-align: center;
  margin-bottom: 52px;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.dc-section-header h2 {
  font-family: var(--dc-font-display);
  font-size: clamp(1.6rem, 2.8vw, 2.25rem);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
  color: var(--dc-ink);
}

.dc-section-header p {
  font-size: 1rem;
  color: var(--dc-ink-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ---------- CARD ---------- */
.dc-card {
  background: var(--dc-surface);
  border: 1px solid var(--dc-hairline);
  border-radius: var(--dc-radius-lg);
  padding: 28px 24px;
  box-shadow: var(--dc-shadow-sm);
  transition: border-color .18s, box-shadow .18s, transform .18s;
}

.dc-card:hover {
  border-color: var(--dc-accent-line);
  box-shadow: var(--dc-shadow-md);
  transform: translateY(-3px);
}

.dc-card-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--dc-radius-md);
  background: var(--dc-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.15rem;
  color: var(--dc-primary);
}

.dc-card h3 {
  font-family: var(--dc-font-body);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: 0;
  color: var(--dc-ink);
}

.dc-card p {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--dc-ink-secondary);
  margin: 0;
}

/* ---------- FEATURE GRID ---------- */
.dc-grid-3,
.dc-grid-4 {
  display: grid;
  gap: 20px;
}

.dc-grid-3 { grid-template-columns: repeat(3, 1fr); }
.dc-grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .dc-grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .dc-grid-3 { grid-template-columns: 1fr; }
  .dc-grid-4 { grid-template-columns: 1fr; }
}

/* ---------- MOCKUP (light dashboard) ---------- */
.dc-mockup {
  background: var(--dc-surface);
  border: 1px solid var(--dc-hairline);
  border-radius: var(--dc-radius-lg);
  overflow: hidden;
  box-shadow: var(--dc-shadow-lg);
}

.dc-mockup-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 11px 16px;
  background: var(--dc-surface-sunken);
  border-bottom: 1px solid var(--dc-hairline);
}

.dc-mockup-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--dc-hairline-strong);
}

.dc-mockup-dot:nth-child(1) { background: #d8d2c6; }
.dc-mockup-dot:nth-child(2) { background: #d8d2c6; }
.dc-mockup-dot:nth-child(3) { background: #d8d2c6; }

.dc-mockup-title {
  font-size: 0.75rem;
  color: var(--dc-ink-muted);
  margin-left: 8px;
}

.dc-mockup-body {
  display: grid;
  grid-template-columns: 132px 1fr;
  min-height: 240px;
}

.dc-mockup-sidebar {
  background: var(--dc-surface-sunken);
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-right: 1px solid var(--dc-hairline);
}

.dc-mockup-nav-item {
  font-size: 0.75rem;
  color: var(--dc-ink-muted);
  padding: 6px 10px;
  border-radius: var(--dc-radius-sm);
}

.dc-mockup-nav-active {
  background: var(--dc-accent-soft);
  color: var(--dc-primary);
  font-weight: 500;
}

.dc-mockup-content { padding: 20px; }

.dc-mockup-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}

.dc-mockup-stat {
  background: var(--dc-surface-sunken);
  border: 1px solid var(--dc-hairline);
  border-radius: var(--dc-radius-sm);
  padding: 12px;
}

.dc-mockup-stat-label {
  font-size: 0.6875rem;
  text-transform: none;
  letter-spacing: 0;
  color: var(--dc-ink-muted);
}

.dc-mockup-stat-value {
  font-family: var(--dc-font-display);
  font-size: 1.25rem;
  font-weight: 600;
  display: block;
  margin-top: 4px;
  color: var(--dc-ink);
}

.dc-mockup-stat-accent .dc-mockup-stat-value { color: var(--dc-primary); }

.dc-mockup-chart {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 80px;
}

.dc-mockup-chart-bar {
  flex: 1;
  background: var(--dc-primary);
  border-radius: 2px 2px 0 0;
  opacity: .85;
  min-height: 8px;
}

.dc-mockup-chart-bar:nth-child(2n) { background: var(--dc-accent-line); }

/* ---------- LOGO WALL ---------- */
.dc-logo-wall {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}

@media (max-width: 768px) {
  .dc-logo-wall { grid-template-columns: repeat(3, 1fr); }
}

.dc-logo-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 20px 12px;
  background: var(--dc-surface);
  border: 1px solid var(--dc-hairline);
  border-radius: var(--dc-radius-md);
  font-size: 0.8125rem;
  color: var(--dc-ink-secondary);
  transition: border-color .15s;
}

.dc-logo-item:hover {
  background: var(--dc-surface);
  border-color: var(--dc-hairline-strong);
  color: var(--dc-ink);
}

.dc-logo-item i {
  font-size: 1.4rem;
  color: var(--dc-ink-muted);
}

/* ---------- METRIC CARD ---------- */
.dc-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 768px) {
  .dc-metrics { grid-template-columns: 1fr; }
}

.dc-metric-card {
  text-align: left;
  padding: 32px 28px;
  background: var(--dc-surface);
  border: 1px solid var(--dc-hairline);
  border-radius: var(--dc-radius-lg);
  box-shadow: var(--dc-shadow-sm);
}

.dc-metric-card .dc-metric-icon {
  font-size: 1.4rem;
  color: var(--dc-primary);
  margin-bottom: 18px;
}

.dc-metric-number {
  font-family: var(--dc-font-display);
  font-size: 2.6rem;
  font-weight: 600;
  line-height: 1;
  color: var(--dc-primary);
  /* solid color, no gradient text */
  -webkit-text-fill-color: currentColor;
  margin-bottom: 10px;
}

.dc-metric-card h3 {
  font-family: var(--dc-font-body);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--dc-ink);
}

.dc-metric-card p {
  font-size: 0.875rem;
  color: var(--dc-ink-secondary);
  line-height: 1.65;
  margin: 0;
}

/* ---------- ALT BAND (was dark band) ---------- */
.dc-dark-band {
  background: var(--dc-surface-alt);
  padding: var(--dc-section-gap) 0;
  border-top: 1px solid var(--dc-hairline);
  border-bottom: 1px solid var(--dc-hairline);
}

.dc-dark-band h2 {
  font-family: var(--dc-font-display);
  font-size: clamp(1.6rem, 2.8vw, 2.25rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0;
  text-align: center;
  margin-bottom: 48px;
  color: var(--dc-ink);
}

/* ---------- TESTIMONIAL ---------- */
.dc-testimonial {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: center;
  padding: 44px 48px;
  background: var(--dc-surface);
  border: 1px solid var(--dc-hairline);
  border-left: 3px solid var(--dc-primary);
  border-radius: var(--dc-radius-lg);
}

@media (max-width: 768px) {
  .dc-testimonial { grid-template-columns: 1fr; padding: 32px; }
}

.dc-testimonial blockquote {
  margin: 0;
  font-size: 1.15rem;
  line-height: 1.75;
  color: var(--dc-ink);
  font-weight: 400;
}

.dc-testimonial blockquote p { margin: 0 0 20px; }

.dc-testimonial cite {
  font-style: normal;
  font-family: var(--dc-font-body);
  font-weight: 600;
  display: block;
  margin-bottom: 4px;
  color: var(--dc-ink);
}

.dc-testimonial .dc-testimonial-role {
  font-size: 0.8125rem;
  color: var(--dc-ink-muted);
}

.dc-testimonial-figure {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--dc-surface-sunken);
  border: 1px solid var(--dc-hairline);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--dc-ink-muted);
  flex-shrink: 0;
}

/* ---------- STEPS ---------- */
.dc-steps {
  max-width: 720px;
  margin: 0 auto;
  counter-reset: step;
}

.dc-step {
  padding: 24px 0;
  border-bottom: 1px solid var(--dc-hairline);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 24px;
  align-items: start;
}

.dc-step:last-child { border-bottom: none; }

.dc-step-num {
  font-family: var(--dc-font-display);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--dc-primary);
  line-height: 1.3;
}

.dc-step h3 {
  font-family: var(--dc-font-body);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--dc-ink);
}

.dc-step p {
  font-size: 0.9rem;
  color: var(--dc-ink-secondary);
  line-height: 1.65;
  margin: 0;
  grid-column: 2;
}

/* ---------- CTA ---------- */
.dc-cta {
  text-align: center;
  padding: 92px 0;
  background: var(--dc-grad-cta-band);
  position: relative;
  overflow: hidden;
}

.dc-cta::after {
  content: '';
  position: absolute;
  top: -40%;
  right: -5%;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 65%);
  pointer-events: none;
}

.dc-cta .dc-container-narrow { position: relative; z-index: 1; }

.dc-cta h2 {
  font-family: var(--dc-font-display);
  font-size: clamp(1.7rem, 2.8vw, 2.35rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
  color: #ffffff;
}

.dc-cta p {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 520px;
  margin: 0 auto 32px;
}

.dc-cta-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* buttons must read on the blue band */
.dc-cta .dc-btn-primary {
  background: #ffffff;
  color: var(--dc-primary);
}

.dc-cta .dc-btn-primary:hover {
  background: #eef2ff;
  color: var(--dc-primary-hover);
}

.dc-cta .dc-btn-ghost {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.5);
}

.dc-cta .dc-btn-ghost:hover {
  border-color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

/* ---------- FOOTER ---------- */
.dc-footer {
  border-top: 1px solid var(--dc-hairline);
  padding: 56px 0 28px;
  background: var(--dc-canvas);
}

.dc-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

@media (max-width: 768px) {
  .dc-footer-grid { grid-template-columns: 1fr 1fr; }
}

.dc-footer-brand p {
  font-size: 0.8125rem;
  color: var(--dc-ink-secondary);
  line-height: 1.65;
  margin: 12px 0 0;
  max-width: 260px;
}

.dc-footer-group h4 {
  font-family: var(--dc-font-body);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  color: var(--dc-ink-muted);
  margin-bottom: 16px;
}

.dc-footer-group ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.dc-footer-group a {
  font-size: 0.875rem;
  color: var(--dc-ink-secondary);
}

.dc-footer-group a:hover { color: var(--dc-primary); }

.dc-footer-contact li {
  font-size: 0.875rem;
  color: var(--dc-ink-secondary);
  margin-bottom: 8px;
}

.dc-footer-contact strong {
  color: var(--dc-ink);
  display: inline-block;
  min-width: 48px;
  font-weight: 600;
}

.dc-footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--dc-hairline);
  font-size: 0.8125rem;
  color: var(--dc-ink-muted);
}

@media (max-width: 768px) {
  .dc-footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}

.dc-footer-social { display: flex; gap: 12px; }

.dc-footer-social a {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--dc-surface);
  border: 1px solid var(--dc-hairline);
  color: var(--dc-ink-muted);
  transition: color .15s, border-color .15s;
}

.dc-footer-social a:hover {
  background: var(--dc-surface);
  border-color: var(--dc-primary);
  color: var(--dc-primary);
}

.dc-footer-icp a {
  font-size: 0.75rem;
  color: var(--dc-ink-muted);
}

/* ---------- BREADCRUMB ---------- */
.dc-breadcrumb {
  font-size: 0.8125rem;
  color: var(--dc-ink-muted);
  margin-bottom: 20px;
}

.dc-breadcrumb a { color: var(--dc-ink-secondary); }
.dc-breadcrumb span { margin: 0 6px; }

/* ---------- SP-API GRID ---------- */
.dc-spapi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
}

.dc-spapi-item {
  padding: 12px 16px;
  background: var(--dc-surface);
  border: 1px solid var(--dc-hairline);
  border-radius: var(--dc-radius-sm);
  font-size: 0.8125rem;
  color: var(--dc-ink-secondary);
  text-align: center;
  transition: border-color .15s, color .15s;
}

.dc-spapi-item:hover {
  border-color: var(--dc-accent-line);
  background: var(--dc-accent-soft);
  color: var(--dc-primary);
}

/* ---------- FAQ ACCORDION ---------- */
.dc-faq-item {
  border-bottom: 1px solid var(--dc-hairline);
}

.dc-faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 20px 0;
  background: none;
  border: none;
  color: var(--dc-ink);
  font-family: var(--dc-font-body);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
}

.dc-faq-question:hover { color: var(--dc-primary); }

.dc-faq-question .fa-chevron-down {
  transition: transform .2s;
  font-size: 0.75rem;
  color: var(--dc-ink-muted);
}

.dc-faq-item[open] .fa-chevron-down { transform: rotate(180deg); }

.dc-faq-answer {
  padding: 0 0 20px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--dc-ink-secondary);
}

.dc-faq-answer p { margin: 0; }

/* ---------- COMPARISON TABLE ---------- */
.dc-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--dc-hairline);
  border-radius: var(--dc-radius-lg);
  background: var(--dc-surface);
}

.dc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.dc-table th {
  background: var(--dc-surface-sunken);
  padding: 15px 20px;
  text-align: left;
  font-family: var(--dc-font-body);
  font-weight: 600;
  font-size: 0.8125rem;
  text-transform: none;
  letter-spacing: 0;
  color: var(--dc-ink-secondary);
  border-bottom: 1px solid var(--dc-hairline);
}

.dc-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--dc-hairline);
  color: var(--dc-ink-secondary);
}

.dc-table tr:last-child td { border-bottom: none; }

.dc-table .dc-table-section td {
  font-family: var(--dc-font-body);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: none;
  letter-spacing: 0;
  color: var(--dc-primary);
  background: var(--dc-accent-soft);
}

.dc-table .fa-check { color: var(--dc-primary); }

/* ---------- ANIMATIONS ---------- */
@keyframes dc-fadeIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.dc-animate-in { animation: dc-fadeIn .5s ease-out forwards; }

/* ---------- TAG / BADGE ---------- */
.dc-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--dc-font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  padding: 3px 10px;
  border-radius: var(--dc-radius-full);
  border: 1px solid var(--dc-hairline);
}

.dc-tag-live { background: var(--dc-accent-soft); color: var(--dc-primary); border-color: var(--dc-accent-line); }
.dc-tag-beta { background: var(--dc-surface-sunken); color: var(--dc-ink-secondary); }
.dc-tag-stat { background: var(--dc-accent-soft); color: var(--dc-primary); border-color: var(--dc-accent-line); }

/* ---------- TIER CARDS ---------- */
.dc-tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 768px) {
  .dc-tiers { grid-template-columns: 1fr; }
}

.dc-tier-card {
  background: var(--dc-surface);
  border: 1px solid var(--dc-hairline);
  border-radius: var(--dc-radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--dc-shadow-sm);
  transition: border-color .18s, box-shadow .18s, transform .18s;
}

.dc-tier-card:hover {
  border-color: var(--dc-accent-line);
  box-shadow: var(--dc-shadow-md);
  transform: translateY(-3px);
}

.dc-tier-featured {
  background: var(--dc-surface);
  border-color: var(--dc-primary);
  box-shadow: var(--dc-shadow-md);
  position: relative;
}

/* remove gradient border ring */
.dc-tier-featured::before { content: none; }

.dc-tier-badge {
  font-family: var(--dc-font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  padding: 3px 12px;
  border-radius: var(--dc-radius-full);
  background: var(--dc-primary);
  color: var(--dc-on-primary);
  display: inline-block;
  margin-bottom: 16px;
  align-self: flex-start;
}

.dc-tier-card h3 {
  font-family: var(--dc-font-body);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--dc-ink);
}

.dc-tier-price {
  font-family: var(--dc-font-display);
  font-size: 2.4rem;
  font-weight: 600;
  line-height: 1;
  margin-bottom: 8px;
  color: var(--dc-ink);
}

.dc-tier-price span {
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--dc-ink-muted);
}

.dc-tier-desc {
  font-size: 0.8125rem;
  color: var(--dc-ink-secondary);
  margin-bottom: 24px;
}

.dc-tier-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  margin-bottom: 24px;
}

.dc-tier-features li {
  font-size: 0.875rem;
  color: var(--dc-ink-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.dc-tier-features li .fa-check {
  color: var(--dc-primary);
  flex-shrink: 0;
}

.dc-tier-card .dc-btn {
  width: 100%;
  justify-content: center;
}

/* ---------- GROUP CARD ---------- */
.dc-group-card {
  background: var(--dc-surface);
  border: 1px solid var(--dc-hairline);
  border-radius: var(--dc-radius-lg);
  padding: 24px;
}

.dc-group-card h3 {
  font-family: var(--dc-font-body);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--dc-ink);
}

.dc-group-card .dc-group-count {
  font-size: 0.75rem;
  color: var(--dc-ink-muted);
}

.dc-group-card ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}

.dc-group-card li {
  font-size: 0.8125rem;
  color: var(--dc-ink-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.dc-group-card li .fa-check {
  color: var(--dc-primary);
  flex-shrink: 0;
}

/* ---------- SEARCH PILL ---------- */
.dc-search-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 400px;
  padding: 12px 18px;
  background: var(--dc-surface);
  border: 1px solid var(--dc-hairline);
  border-radius: var(--dc-radius-md);
  transition: border-color .15s;
}

.dc-search-pill:focus-within {
  border-color: var(--dc-primary);
  background: var(--dc-surface);
}

.dc-search-pill i { color: var(--dc-ink-muted); }

.dc-search-pill input {
  flex: 1;
  background: none;
  border: none;
  color: var(--dc-ink);
  font-size: 0.875rem;
  outline: none;
}

.dc-search-pill input::placeholder { color: var(--dc-ink-muted); }

/* ---------- HELP NAV ---------- */
.dc-help-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.dc-help-card {
  background: var(--dc-surface);
  border: 1px solid var(--dc-hairline);
  border-radius: var(--dc-radius-lg);
  padding: 28px 24px;
  transition: border-color .15s, box-shadow .15s;
}

.dc-help-card:hover {
  border-color: var(--dc-hairline-strong);
  box-shadow: var(--dc-shadow-sm);
}

.dc-help-card h3 {
  font-family: var(--dc-font-body);
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--dc-ink);
}

.dc-help-card a {
  display: block;
  font-size: 0.875rem;
  color: var(--dc-ink-secondary);
  padding: 6px 0;
  transition: color .15s;
}

.dc-help-card a:hover { color: var(--dc-primary); }

.dc-help-card .dc-help-count {
  font-family: var(--dc-font-body);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--dc-ink-muted);
  text-transform: none;
  margin-bottom: 8px;
  letter-spacing: 0;
}

/* ---------- MODULE (Features page) ---------- */
.dc-module-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.dc-module {
  border: 1px solid var(--dc-hairline);
  border-radius: var(--dc-radius-md);
  background: var(--dc-surface);
  overflow: hidden;
  transition: border-color .15s;
}

.dc-module:hover { border-color: var(--dc-hairline-strong); }

.dc-module-head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  padding: 20px;
  cursor: pointer;
  align-items: center;
}

.dc-module-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--dc-radius-md);
  background: var(--dc-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dc-primary);
  font-size: 1.05rem;
  flex-shrink: 0;
}

.dc-module-meta h3 {
  font-family: var(--dc-font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--dc-ink);
}

.dc-module-meta h3 code {
  font-size: 0.6875rem;
  color: var(--dc-ink-muted);
  margin-left: 8px;
  font-family: var(--dc-font-body);
  text-transform: none;
  letter-spacing: 0;
}

.dc-module-summary {
  font-size: 0.8125rem;
  color: var(--dc-ink-secondary);
  margin: 4px 0 0;
}

.dc-module-tag {
  font-family: var(--dc-font-body);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--dc-ink-muted);
  margin-bottom: 4px;
}

.dc-module-body {
  padding: 0 20px 20px;
  display: none;
}

.dc-module.open .dc-module-body { display: block; }

.dc-module-desc {
  font-size: 0.9rem;
  color: var(--dc-ink-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.dc-module-props {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 8px;
}

.dc-module-prop {
  display: flex;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--dc-surface-sunken);
  border-radius: var(--dc-radius-sm);
  font-size: 0.8125rem;
  color: var(--dc-ink-secondary);
}

.dc-module-prop span:first-child { color: var(--dc-ink-muted); }

.dc-module-chevron {
  color: var(--dc-ink-muted);
  transition: transform .2s;
}

.dc-module.open .dc-module-chevron { transform: rotate(180deg); }

/* ---------- SIDEBAR ---------- */
.dc-sidebar { width: 220px; flex-shrink: 0; }

.dc-sidebar-label {
  font-family: var(--dc-font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  color: var(--dc-ink-muted);
  margin-bottom: 12px;
}

.dc-sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dc-sidebar-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 10px 14px;
  background: none;
  border: none;
  border-radius: var(--dc-radius-sm);
  color: var(--dc-ink-secondary);
  font-size: 0.8125rem;
  cursor: pointer;
  text-align: left;
  transition: color .15s, background .15s;
  font-family: var(--dc-font-body);
}

.dc-sidebar-link:hover { color: var(--dc-ink); background: var(--dc-surface-sunken); }

.dc-sidebar-link.active {
  background: var(--dc-accent-soft);
  color: var(--dc-primary);
  font-weight: 600;
}

.dc-sidebar-count {
  font-size: 0.6875rem;
  color: var(--dc-ink-muted);
  background: var(--dc-surface-sunken);
  padding: 2px 8px;
  border-radius: var(--dc-radius-full);
}

/* ---------- PANEL SYSTEM ---------- */
.dc-panels {
  display: flex;
  gap: 32px;
  align-items: flex-start;
}

.dc-panel-main { flex: 1; min-width: 0; }

.dc-panel { display: none; }
.dc-panel.active { display: block; }

.dc-panel-head { margin-bottom: 24px; }

.dc-panel-head h2 {
  font-family: var(--dc-font-display);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--dc-ink);
}

.dc-panel-kicker {
  font-family: var(--dc-font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  color: var(--dc-primary);
  margin-bottom: 8px;
}

/* ---------- TOC ---------- */
.dc-toc {
  width: 180px;
  flex-shrink: 0;
  position: sticky;
  top: 96px;
}

.dc-toc-label {
  font-family: var(--dc-font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  color: var(--dc-ink-muted);
  margin-bottom: 12px;
}

.dc-toc a {
  display: block;
  font-size: 0.8125rem;
  color: var(--dc-ink-muted);
  padding: 6px 0;
  transition: color .1s;
}

.dc-toc a:hover { color: var(--dc-ink); }

/* ---------- PRIVACY / POLICY ---------- */
.dc-docs-shell {
  display: grid;
  grid-template-columns: 220px 1fr 200px;
  gap: 40px;
}

@media (max-width: 1024px) {
  .dc-docs-shell { grid-template-columns: 1fr; }
}

.dc-policy-section { margin-bottom: 24px; }

.dc-policy-card {
  background: var(--dc-surface);
  border: 1px solid var(--dc-hairline);
  border-radius: var(--dc-radius-lg);
  padding: 32px;
}

.dc-policy-card.is-alt {
  background: var(--dc-surface-alt);
  border-color: var(--dc-hairline);
}

.dc-policy-card h2 {
  font-family: var(--dc-font-display);
  font-size: 1.3rem;
  font-weight: 600;
  margin: 0;
  color: var(--dc-ink);
}

.dc-policy-card .dc-section-index {
  font-family: var(--dc-font-body);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--dc-ink-muted);
  margin-bottom: 4px;
  display: block;
}

.dc-policy-card .dc-section-top { margin-bottom: 20px; }

.dc-policy-card .dc-section-content h3 {
  font-family: var(--dc-font-body);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 8px;
  margin-top: 20px;
  color: var(--dc-ink);
}

.dc-policy-card .dc-section-content h3:first-child { margin-top: 0; }

.dc-policy-card .dc-section-content p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--dc-ink-secondary);
  margin: 0 0 12px;
}

.dc-policy-card .dc-section-content p:last-child { margin-bottom: 0; }

.dc-doc-header { margin-bottom: 40px; }

.dc-doc-eyebrow {
  font-family: var(--dc-font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  color: var(--dc-primary);
  margin-bottom: 8px;
  display: block;
}

.dc-doc-header h1 {
  font-family: var(--dc-font-display);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 600;
  letter-spacing: 0;
  color: var(--dc-ink);
}

.dc-doc-meta {
  display: flex;
  gap: 20px;
  margin-top: 12px;
  font-size: 0.8125rem;
  color: var(--dc-ink-muted);
  flex-wrap: wrap;
}

.dc-doc-meta i { margin-right: 6px; }

/* ---------- PROPERTY GRID ---------- */
.dc-property-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.dc-property-row {
  display: flex;
  gap: 12px;
  padding: 8px 12px;
  background: var(--dc-surface-sunken);
  border-radius: var(--dc-radius-sm);
  font-size: 0.8125rem;
}

.dc-property-key {
  color: var(--dc-ink-muted);
  min-width: 100px;
  flex-shrink: 0;
}

.dc-property-val { color: var(--dc-ink-secondary); }

/* ---------- PRICE DISPLAY ---------- */
.dc-price-display {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 16px;
}

.dc-price-currency {
  font-family: var(--dc-font-display);
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--dc-ink-muted);
}

.dc-price-amount {
  font-family: var(--dc-font-display);
  font-size: 3.2rem;
  font-weight: 600;
  line-height: 1;
  color: var(--dc-ink);
}

/* ---------- SUMMARY CARD ---------- */
.dc-summary-card {
  background: var(--dc-surface);
  border: 1px solid var(--dc-hairline);
  border-radius: var(--dc-radius-lg);
  padding: 32px;
}

.dc-summary-card h3 {
  font-family: var(--dc-font-body);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--dc-ink);
}

.dc-summary-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.dc-summary-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.dc-summary-list li i {
  font-size: 1.15rem;
  color: var(--dc-primary);
  margin-top: 2px;
  flex-shrink: 0;
}

.dc-summary-list li strong {
  font-family: var(--dc-font-body);
  font-size: 0.875rem;
  font-weight: 600;
  display: block;
  margin-bottom: 2px;
  color: var(--dc-ink);
}

.dc-summary-list li span {
  font-size: 0.8125rem;
  color: var(--dc-ink-secondary);
}

/* ---------- ARTICLE ---------- */
.dc-article {
  max-width: var(--dc-container-narrow);
  margin: 0 auto;
}

.dc-article h1 {
  font-family: var(--dc-font-display);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0;
  margin-bottom: 16px;
  color: var(--dc-ink);
}

.dc-article h2 {
  font-family: var(--dc-font-display);
  font-size: 1.4rem;
  font-weight: 600;
  margin: 36px 0 12px;
  color: var(--dc-ink);
}

.dc-article p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--dc-ink-secondary);
  margin: 0 0 18px;
}

.dc-article ul, .dc-article ol {
  padding-left: 20px;
  list-style: disc;
  margin: 0 0 18px;
}

.dc-article li {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--dc-ink-secondary);
  margin-bottom: 8px;
}

.dc-article code {
  background: var(--dc-accent-soft);
  color: var(--dc-primary);
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 0.85rem;
}

/* ---------- ARTICLE AUTHOR ---------- */
.dc-article-meta {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 16px 0;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--dc-hairline);
  font-size: 0.8125rem;
  color: var(--dc-ink-muted);
}

/* ---------- TOC SIDEBAR ---------- */
.dc-toc-sidebar {
  position: sticky;
  top: 96px;
}

.dc-toc-sidebar-title {
  font-family: var(--dc-font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  color: var(--dc-ink-muted);
  margin-bottom: 12px;
}

.dc-toc-sidebar a {
  display: block;
  font-size: 0.8125rem;
  color: var(--dc-ink-muted);
  padding: 5px 0;
  transition: color .1s;
}

.dc-toc-sidebar a:hover { color: var(--dc-ink); }