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

body {
  line-height: 1.6;
  color: #333;
  background-color: #fff;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

/* Breadcrumb */
.breadcrumb-wrapper {
  background: #fff;
  padding: 25px 0;
}

.breadcrumb {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.breadcrumb ul {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb li:not(:last-child)::after {
  content: "";
  width: 8px;
  height: 12px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 12'%3E%3Cpath fill='%23999' d='M2 0L0 2l4 4-4 4 2 2 6-6z'/%3E%3C/svg%3E") no-repeat center;
  background-size: contain;
}

.breadcrumb a {
  color: #666;
  font-size: 14px;
  text-decoration: underline;
}

.breadcrumb a:hover {
  color: #303360;
}

/* Main Content Area */
.content-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 60px;
  display: flex;
  gap: 80px;
}

/* Sidebar */
.sidebar {
  width: 260px;
  flex-shrink: 0;
  padding-top: 10px;
}

.sidebar-title {
  color: #303360;
  font-size: 22px;
  font-weight: 400;
  margin-bottom: 20px;
}

.sidebar-nav li {
  border-bottom: 1px solid #e5e5e5;
}

.sidebar-nav li:first-child {
  border-top: 1px solid #e5e5e5;
}

.sidebar-nav a {
  display: flex;
  align-items: flex-start;
  padding: 14px 0;
  color: #666;
  font-size: 14px;
  line-height: 1.5;
  transition: color 0.3s;
}

.sidebar-nav a::before {
  content: "•";
  color: #303360;
  font-size: 20px;
  margin-right: 10px;
  line-height: 1;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  color: #303360;
}

/* Main Content */
.main-section {
  flex: 1;
  min-width: 0;
  padding-top: 10px;
}

.main-section p {
  margin-bottom: 20px;
  color: #444;
  line-height: 1.7;
}

.main-section>ul {
  margin-bottom: 30px;
  padding-left: 0;
}

.main-section>ul>li {
  position: relative;
  padding-left: 25px;
  margin-bottom: 8px;
  color: #444;
  line-height: 1.6;
}

.main-section>ul>li::before {
  content: "•";
  position: absolute;
  left: 8px;
  color: #303360;
  font-size: 18px;
}

.main-section strong {
  font-weight: 600;
}

/* Mobile Sub Nav (hidden on desktop) */
.mobile-sub-nav {
  display: none;
  margin-top: 40px;
  padding-top: 30px;
  border-top: 1px solid #e5e5e5;
}

.mobile-sub-nav h4 {
  color: #333;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 15px;
}

.mobile-sub-nav p {
  margin-bottom: 8px !important;
}

.mobile-sub-nav a {
  color: #555;
  font-size: 14px;
  transition: color 0.3s;
}

.mobile-sub-nav a:hover {
  color: #303360;
}

.mobile-sub-nav p.selected a {
  color: #303360;
}

/* Publisher Section */
.publisher {
  background: #f5f5f5;
  padding: 50px 20px;
  text-align: center;
}

.publisher-container {
  max-width: 1000px;
  margin: 0 auto;
}

.publisher h2 {
  font-size: 16px;
  font-weight: 400;
  color: #333;
  margin-bottom: 30px;
  position: relative;
  display: inline-block;
}

.publisher h2 span {
  background: #f5f5f5;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

.publisher h2::before {
  content: "";
  position: absolute;
  top: 50%;
  left: -100px;
  right: -100px;
  height: 1px;
  background: #ccc;
}

.publisher-logo {
  margin-bottom: 35px;
}

.publisher-logo img {
  height: 55px;
  width: auto;
}

.subpublishers {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 35px;
  flex-wrap: wrap;
}

.subpublishers img {
  height: 35px;
  width: auto;
  opacity: 0.7;
  transition: opacity 0.3s;
}

.subpublishers a:hover img {
  opacity: 1;
}

/* Footer */
.subfooter {
  background: #3a3a3a;
  color: #aaa;
  padding: 35px 20px;
  text-align: center;
  font-size: 13px;
  line-height: 1.9;
}

.subfooter p:first-child {
  color: #fff;
  font-weight: 600;
  margin-bottom: 3px;
  font-size: 14px;
}

.subfooter a {
  color: #303360;
  transition: color 0.3s;
}

.subfooter a:hover {
  color: #fff;
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 10px;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: #fff;
  display: block;
}

/* Mobile Navigation */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #fff;
  z-index: 2000;
  overflow-y: auto;
  padding: 20px;
}

.mobile-nav.active {
  display: block;
}

.mobile-nav-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 24px;
  height: 24px;
  cursor: pointer;
}

.mobile-nav-list {
  margin-top: 60px;
}

.mobile-nav-list>li {
  border-bottom: 1px solid #eee;
}

.mobile-nav-list>li>a {
  display: block;
  padding: 15px 0;
  font-weight: 600;
  font-size: 16px;
  color: #333;
}

.mobile-nav-list .sub-menu {
  padding-left: 20px;
  padding-bottom: 15px;
}

.mobile-nav-list .sub-menu a {
  display: block;
  padding: 8px 0;
  font-size: 14px;
  color: #666;
}

/* Responsive */
@media (max-width: 1024px) {
  .content-wrapper {
    flex-direction: column;
    gap: 40px;
  }

  .sidebar {
    width: 100%;
    display: none;
  }

  .mobile-sub-nav {
    display: block;
  }

  .submission-btn-nav {
    display: none;
  }
}

@media (max-width: 768px) {
  .header {
    padding: 15px 20px;
  }

  .nav-wrapper {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .header-center {
    display: none;
  }

  .jumbo {
    padding: 50px 20px;
  }

  .jumbo h1 {
    font-size: 28px;
  }

  .logo-text {
    font-size: 18px;
  }

  .logo-icon span {
    width: 6px;
    height: 32px;
  }

  .content-wrapper {
    padding: 30px 15px 40px;
  }

  .publisher h2::before {
    left: -50px;
    right: -50px;
  }

  .subpublishers {
    gap: 20px;
  }

  .subpublishers img {
    height: 28px;
  }

  /* APC page visuals */
  /* APC page visuals (refined) */
  :root{--apc-bg:#eef6ff;--card-border:#dbeafe;--muted:#556077;--primary:#2563eb;--accent:#0b6b8a}
  .apc-hero{background:linear-gradient(180deg,var(--apc-bg),#f7fbff);padding:40px 28px;border-radius:12px;margin-bottom:24px;box-shadow:0 8px 30px rgba(11,27,54,0.04)}
  .apc-hero-inner{max-width:1100px;margin:0 auto}
  .apc-hero h1{font-size:32px;color:#071233;margin:0 0 8px;font-weight:700}
  .apc-hero .lead{color:var(--muted);font-size:16px;max-width:880px}

  .apc-container{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1fr 360px;gap:28px;align-items:start}
  .apc-main{background:#fff;padding:26px;border-radius:12px;border:1px solid var(--card-border)}
  .apc-main h2{margin-top:0;color:#071233}

  .apc-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;margin:20px 0}
  .apc-card{background:#fff;border:1px solid var(--card-border);padding:18px;border-radius:12px;box-shadow:0 10px 30px rgba(11,27,54,0.04);transition:transform .18s ease,box-shadow .18s ease}
  .apc-card:hover{transform:translateY(-6px);box-shadow:0 18px 44px rgba(11,27,54,0.09)}
  .apc-card h3{font-size:16px;margin:0 0 8px;color:#071233}
  .card-price{color:var(--accent);font-weight:800;margin-bottom:10px;font-size:15px}
  .apc-card p{color:var(--muted);line-height:1.5}

  .payment-box{background:linear-gradient(180deg,#fff,#fbfdff);border:1px solid var(--card-border);padding:20px;border-radius:12px;box-shadow:0 10px 30px rgba(11,27,54,0.05);position:relative}
  .payment-inner h4{margin:0 0 8px;color:#071233}
  .payment-inner .muted{color:var(--muted);font-size:14px;margin-bottom:12px}
  .payment-list li{padding:6px 0;color:#213547}
  .cta-btn{display:inline-block;background:linear-gradient(90deg,var(--primary),#1e4fc0);color:#fff;padding:10px 16px;border-radius:10px;text-decoration:none;font-weight:700;box-shadow:0 8px 20px rgba(37,99,235,0.18)}
  .cta-btn:hover{opacity:.95}

  @media (max-width:1100px){.apc-cards{grid-template-columns:repeat(2,1fr)}.apc-container{grid-template-columns:1fr 320px}}
  @media (max-width:860px){.apc-container{grid-template-columns:1fr}.payment-box{order:2}.apc-cards{grid-template-columns:1fr 1fr}}
  @media (max-width:560px){.apc-hero{padding:18px}.apc-hero h1{font-size:22px}.apc-cards{grid-template-columns:1fr}}
}