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

body {
  font-family: 'Courier New', Courier, monospace;
  color: #1f2937;
  background: #f3f4f6;
  line-height: 1.75;
}

.notice-strip {
  background: #7c3aed;
  color: white;
  padding: 18px 0;
  text-align: center;
  font-size: 17px;
  font-weight: 800;
}

.top-nav {
  background: white;
  border-bottom: 4px solid #7c3aed;
  padding: 26px 0;
  position: sticky;
  top: 0;
  z-index: 9999;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.nav-wrapper {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 35px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 18px;
  text-decoration: none;
  color: #7c3aed;
}

.brand-link img {
  width: 54px;
  height: 54px;
  border-radius: 16px;
}

.brand-text {
  font-size: 34px;
  font-weight: 900;
}

.menu-list {
  display: flex;
  list-style: none;
  gap: 42px;
}

.menu-list a {
  color: #1f2937;
  text-decoration: none;
  font-weight: 800;
  font-size: 18px;
  transition: color 0.3s;
}

.menu-list a:hover {
  color: #7c3aed;
}

.splash-area {
  background: linear-gradient(135deg, #7c3aed 0%, #5b21b6 100%);
  color: white;
  padding: 130px 35px;
  text-align: center;
}

.splash-area h1 {
  font-size: 64px;
  margin-bottom: 32px;
  font-weight: 900;
  line-height: 1.2;
}

.splash-area p {
  font-size: 28px;
  margin-bottom: 48px;
  max-width: 950px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.primary-action {
  background: white;
  color: #7c3aed;
  padding: 24px 60px;
  border-radius: 70px;
  text-decoration: none;
  font-weight: 900;
  display: inline-block;
  font-size: 22px;
  transition: all 0.3s;
  box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

.primary-action:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 35px rgba(0,0,0,0.4);
}

.page-section {
  padding: 105px 35px;
  max-width: 1400px;
  margin: 0 auto;
}

.section-heading {
  font-size: 48px;
  text-align: center;
  margin-bottom: 75px;
  color: #1f2937;
  font-weight: 900;
}

.feature-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 42px;
}

.feature-box {
  background: white;
  padding: 48px;
  border-radius: 22px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
  transition: all 0.3s;
  border-bottom: 7px solid #7c3aed;
}

.feature-box:hover {
  transform: translateY(-12px);
  box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

.feature-symbol {
  font-size: 56px;
  margin-bottom: 24px;
  display: block;
}

.feature-box h3 {
  font-size: 30px;
  margin-bottom: 20px;
  color: #7c3aed;
  font-weight: 900;
}

.feature-box p {
  color: #4b5563;
  line-height: 2;
  font-size: 18px;
}

.exchange-area {
  background: white;
}

.exchange-box {
  background: #f9fafb;
  padding: 38px;
  border-radius: 18px;
  text-align: center;
  border: 4px solid #e5e7eb;
  transition: all 0.3s;
}

.exchange-box:hover {
  border-color: #7c3aed;
  transform: scale(1.05);
  box-shadow: 0 12px 28px rgba(124,58,237,0.2);
}

.exchange-box h4 {
  font-size: 28px;
  color: #7c3aed;
  margin-bottom: 18px;
  font-weight: 900;
}

.exchange-box p {
  color: #6b7280;
  font-size: 18px;
  line-height: 1.8;
}

.bottom-footer {
  background: #1f2937;
  color: white;
  padding: 75px 35px 35px;
}

.footer-layout {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 48px;
  margin-bottom: 42px;
}

.bottom-footer h4 {
  margin-bottom: 24px;
  font-size: 22px;
  font-weight: 900;
}

.bottom-footer ul {
  list-style: none;
}

.bottom-footer ul li {
  margin-bottom: 15px;
}

.bottom-footer a {
  color: #9ca3af;
  text-decoration: none;
  transition: color 0.3s;
  font-size: 17px;
}

.bottom-footer a:hover {
  color: white;
}

.copyright-text {
  text-align: center;
  padding-top: 32px;
  border-top: 1px solid #374151;
  color: #9ca3af;
  max-width: 1400px;
  margin: 0 auto;
  font-size: 17px;
}

@media (max-width: 768px) {
  .splash-area h1 {
    font-size: 42px;
  }
  
  .menu-list {
    flex-direction: column;
    gap: 22px;
  }
}