/* MTT 官网 - 静态样式 */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif; }

.layout {
  min-height: 100vh;
  background: #0f0f0f;
  color: #e0e0e0;
  display: flex;
  flex-direction: column;
}
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: rgba(15, 15, 15, 0.95);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.nav-logo { display: flex; align-items: center; text-decoration: none; }
.nav-logo-img { height: 32px; width: auto; }
.nav-links { display: flex; gap: 2rem; }
.nav-links a { color: #aaa; text-decoration: none; font-size: 0.95rem; }
.nav-links a:hover { color: #E4F52B; }
.nav-links a.active { color: #E4F52B; }
.main { flex: 1; }
.footer {
  margin-top: auto;
  padding: 2.75rem 1.5rem 3rem;
  text-align: center;
  /* 仅与主内容区一条极淡分界，无多余横线 */
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, transparent 55%);
}
.footer-inner {
  max-width: 560px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
}
.footer-meta {
  margin: 0;
  font-size: 0.8125rem;
  color: #737373;
  letter-spacing: 0.04em;
  line-height: 1.5;
}
.footer-copy {
  margin: 0;
  font-size: 0.8125rem;
  color: #525252;
  line-height: 1.5;
}
.footer-icp {
  margin: 0.25rem 0 0;
  padding: 0;
  line-height: 1.5;
}
/* 页脚链接：灰阶，避免浏览器默认蓝 / 紫 */
.footer a,
.footer a:link,
.footer a:visited {
  color: #8a8a8a;
  text-decoration: none;
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}
.footer a:hover {
  color: #bdbdbd;
  text-decoration: underline;
}

.page { padding-bottom: 3rem; }
.hero {
  padding: 5rem 2rem 4rem;
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}
.hero-logo { width: 72px; height: auto; margin-bottom: 1.25rem; display: block; margin-left: auto; margin-right: auto; }
.hero-title { font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 700; color: #fff; margin-bottom: 0.5rem; }
.hero-desc { font-size: 1rem; color: #999; }
.block {
  padding: 3rem 2rem;
  max-width: 1000px;
  margin: 0 auto;
}
.block-title { font-size: 1.35rem; font-weight: 600; color: #fff; margin-bottom: 0.35rem; text-align: center; }
.block-desc { text-align: center; color: #999; font-size: 0.9rem; margin-bottom: 1.5rem; }
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
}
.card {
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
}
.card:hover { border-color: rgba(228, 245, 43, 0.25); }
.card-icon { width: 44px; height: 44px; margin-bottom: 0.6rem; display: block; }
.card h3 { font-size: 1rem; font-weight: 600; color: #fff; margin-bottom: 0.35rem; }
.card p { font-size: 0.85rem; line-height: 1.5; color: #999; }

.content { max-width: 640px; margin: 0 auto; padding: 0 2rem 2rem; }
.content p { margin-bottom: 1rem; line-height: 1.8; color: #aaa; font-size: 0.95rem; }
.link {
  color: #a8a8a8;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}
.link:hover {
  color: #d0d0d0;
  border-bottom-color: rgba(255, 255, 255, 0.35);
}
.contact-addr { color: #999; font-size: 0.95rem; margin-bottom: 0.5rem; }
.contact-email {
  color: #a8a8a8;
  font-size: 1rem;
  text-decoration: none;
}
.contact-email:hover {
  color: #d0d0d0;
}

.page--about .page,
.page--contact .page { padding-bottom: 2rem; }
.page--about .hero,
.page--contact .hero { padding: 4rem 2rem 3rem; max-width: 640px; }
.page--about .hero-title,
.page--contact .hero-title { font-size: 1.75rem; margin-bottom: 0.75rem; }
.page--about .hero-desc,
.page--contact .hero-desc { color: #999; font-size: 1rem; line-height: 1.6; }
.page--contact .content { text-align: center; }