:root {
  --bg: #ffffff;
  --soft: #f8fafc;
  --line: #e5e7eb;
  --text: #111827;
  --muted: #6b7280;
  --green: #16a34a;
  --blue: #2563eb;
  --purple: #7c3aed;
  --red: #ef4444;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Outfit", "Noto Sans SC", sans-serif;
  color: var(--text);
  background: var(--bg);
  font-size: 15px;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.top-alert {
  background: #fef3c7;
  color: #92400e;
  text-align: center;
  font-size: 12px;
  padding: 6px 14px;
}

.cc-container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.cc-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.cc-nav {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cc-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.cc-brand img {
  width: 26px;
  height: 26px;
  border-radius: 7px;
}

.cc-brand span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
}

.cc-brand span::after {
  content: "官方数据获客入口";
  color: #9ca3af;
  font-size: 12px;
  font-weight: 500;
}

.cc-nav nav {
  display: flex;
  gap: 30px;
  font-size: 14px;
  color: #374151;
}

.login-link {
  padding: 7px 14px;
  border-radius: 8px;
  background: #f3f4f6;
  font-size: 14px;
}

.lang-toggle {
  border: 1px solid var(--line);
  background: #fff;
  color: #374151;
  border-radius: 8px;
  padding: 7px 12px;
  font-size: 14px;
  cursor: pointer;
}

.cc-hero {
  padding: 56px 0 44px;
}

.cc-hero-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  align-items: start;
  gap: 32px;
}

.cc-hero-copy h1 {
  margin: 0 0 8px;
  font-size: clamp(38px, 5vw, 58px);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.cc-hero-copy strong {
  display: block;
  color: var(--blue);
  font-size: 24px;
  margin-bottom: 14px;
}

.cc-hero-copy p {
  color: #4b5563;
  line-height: 1.8;
  margin: 0 0 22px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 10px;
  font-weight: 600;
  border: 1px solid transparent;
}

.btn-primary { background: #111827; color: #fff; }
.btn-outline { background: #fff; border-color: var(--line); color: #111827; }

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.hero-badges span {
  color: var(--purple);
  background: #f5f3ff;
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 13px;
}


.ascii-art {
  margin: 0;
  padding: 20px;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #b64b35;
  background: #fff;
  border: 1px solid #f1f5f9;
  box-shadow: var(--shadow);
  font-size: 16px;
  line-height: 1.02;
  overflow: hidden;
}

.cc-section {
  padding: 46px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 28px;
}

.section-title h2 {
  margin: 0 0 8px;
  font-size: 32px;
}

.section-title p {
  margin: 0;
  color: var(--muted);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.feature-card {
  text-align: center;
  padding: 26px 22px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 4px 18px rgba(15,23,42,0.04);
}

.feature-illustration {
  width: 96px;
  height: 96px;
  object-fit: contain;
  margin: 0 auto 16px;
}

.feature-icon {
  width: 38px;
  height: 38px;
  margin: 0 auto 14px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: #ecfdf5;
  color: var(--green);
  font-weight: 800;
}

.feature-card:nth-child(2) .feature-icon { background: #eff6ff; color: var(--blue); }
.feature-card:nth-child(3) .feature-icon { background: #f5f3ff; color: var(--purple); }
.feature-card h3 { margin: 0 0 10px; font-size: 20px; }
.feature-card p { margin: 0 0 12px; color: var(--muted); line-height: 1.75; }
.feature-card strong { color: var(--green); font-size: 14px; }
.feature-card:nth-child(2) strong { color: var(--blue); }
.feature-card:nth-child(3) strong { color: var(--purple); }

.cc-compare {
  background: #f8fafc;
}

.compare-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid #dbe3ef;
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
}

.compare-col {
  padding: 26px;
}

.compare-good { border-right: 1px solid #dbe3ef; }
.compare-col h3 { margin: 0 0 18px; }
.compare-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.compare-col li { display: flex; gap: 10px; color: #374151; line-height: 1.55; }
.compare-good li span { color: var(--green); font-weight: 800; }
.compare-bad li span { color: var(--red); font-weight: 800; }
.compare-tip { text-align: center; color: #6b7280; margin: 18px 0 0; }

.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.audience-card {
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 24px;
}
.audience-card h3 { margin: 0 0 10px; }
.audience-card p { margin: 0; color: var(--muted); line-height: 1.75; }

.trust-section { background: #f8fafc; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  text-align: center;
}
.stats-grid article { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 20px; }
.stats-grid strong { display: block; color: var(--blue); font-size: 28px; margin-bottom: 8px; }
.stats-grid span { color: var(--muted); }

.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.post-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 8px 22px rgba(15,23,42,0.04);
}
.post-card img { width: 100%; height: 135px; object-fit: contain; padding: 18px; background: #f8fafc; }
.post-card span { display: inline-flex; margin: 16px 18px 8px; color: var(--blue); font-size: 13px; }
.post-card h3 { margin: 0 18px 10px; font-size: 18px; line-height: 1.35; }
.post-card p { margin: 0 18px 14px; color: var(--muted); line-height: 1.7; }
.post-card small { display: block; margin: 0 18px 18px; color: #9ca3af; }
.all-posts { display: table; margin: 26px auto 0; color: #374151; border: 1px solid var(--line); padding: 9px 16px; border-radius: 8px; }

.cc-cta {
  text-align: center;
  padding: 46px 20px;
}
.cc-cta h2 { margin: 0 0 10px; font-size: 32px; }
.cc-cta p { margin: 0 0 20px; color: var(--muted); }

.cc-footer {
  border-top: 1px solid var(--line);
  padding: 18px 0;
  color: var(--muted);
  font-size: 13px;
}
.footer-row { display: flex; justify-content: space-between; align-items: center; gap: 18px; }
.footer-row div { display: flex; gap: 18px; }

.main-topic-links {
  padding-top: 38px;
  background: #fff;
}

.main-topic-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.main-topic-card {
  display: block;
  padding: 18px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: 0 8px 22px rgba(15,23,42,0.04);
}

.main-topic-card strong {
  display: block;
  font-size: 20px;
  margin-bottom: 8px;
}

.main-topic-card span {
  color: var(--muted);
}


.topic-entry-grid,
.topic-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.topic-entry-card,
.topic-card,
.topic-cta-box {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 8px 22px rgba(15,23,42,0.04);
}

.topic-entry-card {
  padding: 20px;
}

.topic-entry-card strong {
  display: block;
  font-size: 20px;
  margin-bottom: 8px;
}

.topic-entry-card span {
  color: var(--muted);
}

.topic-page {
  min-height: 100vh;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  padding: 32px 0 56px;
}

.topic-wrap {
  position: relative;
}

.topic-back {
  display: inline-flex;
  margin-bottom: 28px;
  color: var(--blue);
  font-weight: 600;
}

.topic-wrap > .lang-toggle {
  position: absolute;
  right: 0;
  top: 0;
}

.topic-hero {
  max-width: 860px;
  padding: 36px 0 30px;
}

.topic-kicker {
  display: inline-flex;
  padding: 7px 11px;
  border-radius: 999px;
  background: #f5f3ff;
  color: var(--purple);
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 16px;
}

.topic-hero h1 {
  margin: 0 0 16px;
  font-size: clamp(38px, 6vw, 64px);
  line-height: 1.03;
  letter-spacing: -0.04em;
}

.topic-hero p,
.topic-card p,
.topic-cta-box p {
  color: var(--muted);
  line-height: 1.85;
}

.topic-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.topic-card {
  padding: 24px;
}

.topic-card h2 {
  margin: 0 0 10px;
  font-size: 22px;
}

.topic-card p {
  margin: 0;
}

.topic-cta-box {
  margin-top: 18px;
  padding: 26px;
}

.topic-cta-box h2 {
  margin: 0 0 10px;
  font-size: 30px;
}

@media (max-width: 980px) {
  .cc-hero-grid,
  .feature-grid,
  .compare-box,
  .audience-grid,
  .stats-grid,
  .posts-grid,
  .main-topic-grid,
  .topic-entry-grid,
  .topic-grid {
    grid-template-columns: 1fr;
  }

  .compare-good {
    border-right: 0;
    border-bottom: 1px solid #dbe3ef;
  }
}

@media (max-width: 720px) {
  .cc-container { width: min(100% - 24px, 1120px); }
  .cc-nav { flex-wrap: wrap; }
  .cc-nav nav { order: 3; width: 100%; justify-content: center; }
  .ascii-art { font-size: 12px; min-height: 220px; }
  .hero-actions .btn { width: 100%; }
  .footer-row { flex-direction: column; align-items: flex-start; }
}