/* WPS Office wpsvue.com.cn 根域样式 */
:root {
  --bg: #f4f7fb;
  --white: #ffffff;
  --text: #1f2937;
  --muted: #5b6b7c;
  --line: #e2e8f0;
  --brand: #1a56db;
  --brand-hover: #1648b8;
  --card: #ffffff;
  --radius: 6px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
}

a {
  color: var(--brand);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img,
svg {
  max-width: 100%;
  vertical-align: middle;
}

.wrap {
  width: min(1080px, 92%);
  margin: 0 auto;
}

.topbar {
  background: var(--white);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 1.125rem;
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
  color: var(--brand);
}

.brand-mark {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.nav a {
  color: var(--muted);
  padding: 8px 14px;
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
}

.nav a:hover {
  color: var(--brand);
  background: #eef3ff;
  text-decoration: none;
}

.nav a.is-active {
  color: var(--brand);
  background: #e8effc;
}

.hero-center {
  text-align: center;
  padding: 56px 0 40px;
}

.hero-center h1 {
  margin: 0 0 16px;
  font-size: clamp(1.6rem, 3.2vw, 2.2rem);
  line-height: 1.35;
  font-weight: 700;
}

.hero-center .lead {
  margin: 0 auto 28px;
  max-width: 720px;
  color: var(--muted);
  font-size: 1.05rem;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin: 0 0 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-hover);
  color: #fff;
}

.btn-secondary {
  background: var(--white);
  color: var(--brand);
  border-color: #c7d7f5;
}

.btn-secondary:hover {
  background: #eef3ff;
  color: var(--brand);
}

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border-color: var(--line);
}

.btn-ghost:hover {
  color: var(--brand);
  border-color: #c7d7f5;
  background: var(--white);
}

.section {
  padding: 36px 0;
}

.section h2 {
  margin: 0 0 18px;
  font-size: 1.35rem;
  line-height: 1.4;
}

.section p {
  margin: 0 0 14px;
  color: var(--text);
}

.section ol,
.section ul {
  margin: 0 0 16px;
  padding-left: 1.25rem;
  color: var(--text);
}

.section li {
  margin-bottom: 10px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 8px;
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px 18px;
}

.feature-card h3 {
  margin: 12px 0 8px;
  font-size: 1.05rem;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.icon-box {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #eef3ff;
  border-radius: 8px;
  color: var(--brand);
}

.news-list {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.news-line {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
}

.news-line:last-child {
  border-bottom: none;
}

.news-line h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 650;
}

.news-line .summary {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.news-line .date {
  flex-shrink: 0;
  color: #8090a3;
  font-size: 0.9rem;
  padding-top: 2px;
}

.faq-block {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 0;
}

.faq-item {
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-item h3 {
  margin: 0 0 10px;
  font-size: 1.02rem;
}

.faq-item p {
  margin: 0 0 8px;
  color: var(--muted);
}

.faq-item p:last-child {
  margin-bottom: 0;
}

.cta-band {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 28px 22px;
  text-align: center;
}

.site-footer {
  margin-top: 40px;
  padding: 28px 0 40px;
  border-top: 1px solid var(--line);
  background: var(--white);
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer p {
  margin: 0 0 10px;
}

.site-footer a {
  color: var(--brand);
}

@media (max-width: 860px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .news-line {
    flex-direction: column;
    gap: 6px;
  }

  .hero-center {
    padding: 36px 0 28px;
  }

  .btn-row {
    justify-content: flex-start;
  }

  .hero-center .btn-row {
    justify-content: center;
  }
}

@media (max-width: 640px) {
  .topbar-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 0;
  }

  .nav {
    width: 100%;
  }

  .nav a {
    padding: 8px 10px;
  }
}