body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  color: #263238;
  background: #fff;
}

a {
  color: inherit;
}

.conf-top {
  background: #263238;
  color: #fff;
  font-size: 14px;
  padding: 8px 5%;
  text-align: center;
}

.conf-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 10px 5%;
  background: #fff;
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.08);
}

.conf-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #263238;
  text-decoration: none;
}

.conf-brand img {
  height: 58px;
}

.conf-brand strong,
.conf-brand small {
  display: block;
  line-height: 1.2;
}

.conf-brand strong {
  color: #f5644b;
  font-size: 20px;
}

.conf-brand small {
  color: #56666f;
  font-size: 12px;
}

.conf-menu-toggle {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.conf-menu-button {
  display: none;
  width: 44px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border: 1px solid #f0ddd8;
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
}

.conf-menu-button span,
.conf-menu-button span::before,
.conf-menu-button span::after {
  display: block;
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: #f5644b;
  content: "";
}

.conf-menu-button span {
  position: relative;
}

.conf-menu-button span::before {
  position: absolute;
  top: -7px;
}

.conf-menu-button span::after {
  position: absolute;
  top: 7px;
}

.conf-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-weight: 700;
}

.conf-links a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 7px 12px;
  border-radius: 5px;
  color: #f5644b;
  text-decoration: none;
}

.conf-links a:hover {
  background: #fff2ee;
  color: #d84c32;
}

.conf-hero {
  padding: 54px 5% 48px;
  background: linear-gradient(135deg, #fff8ed 0%, #fff 48%, #edf7f5 100%);
  color: #263238;
}

.conf-hero-inner,
.conf-section {
  max-width: 1180px;
  margin: 0 auto;
}

.conf-hero-inner.with-cover {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  align-items: center;
  gap: 42px;
}

.conf-copy {
  min-width: 0;
}

.conf-kicker {
  display: inline-block;
  margin-bottom: 14px;
  padding: 7px 12px;
  border: 1px solid rgba(245, 100, 75, 0.28);
  border-radius: 5px;
  background: #fff;
  color: #f5644b;
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0;
}

.conf-hero h1 {
  max-width: 900px;
  margin: 0 0 16px;
  color: #263238;
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.08;
  letter-spacing: 0;
}

.conf-hero p {
  max-width: 850px;
  margin: 0;
  font-size: 18px;
  line-height: 1.7;
}

.conf-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.conf-pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 7px 12px;
  border-radius: 5px;
  background: #fff;
  border: 1px solid #f0ddd8;
  color: #3f4b52;
  font-weight: 700;
}

.conf-cover-wrap {
  padding: 12px;
  background: #fff;
  border: 1px solid #eaded8;
  border-radius: 8px;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.18);
}

.conf-cover {
  display: block;
  width: 100%;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  border-radius: 5px;
}

.conf-section {
  padding: 44px 5%;
}

.conf-summary {
  padding-bottom: 12px;
}

.conf-section h2 {
  margin: 0 0 22px;
  padding-left: 12px;
  border-left: 6px solid #f5644b;
  color: #222;
  font-size: 30px;
}

.conf-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.issue-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.conf-card,
.paper-card {
  background: #fff;
  border: 1px solid #ececec;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.conf-card {
  display: flex;
  min-height: 310px;
  flex-direction: column;
  padding: 22px;
}

.conf-card h3 {
  margin: 8px 0 12px;
  color: #f5644b;
  font-size: 22px;
  line-height: 1.25;
}

.issue-number {
  color: #11536f;
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.conf-card p,
.paper-card p,
.issue-note {
  color: #56666f;
  font-size: 15px;
  line-height: 1.6;
}

.conf-card p {
  margin: 0 0 18px;
}

.conf-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  margin-top: auto;
  padding: 9px 16px;
  border-radius: 5px;
  background: #f5644b;
  color: #fff;
  font-weight: 800;
  text-decoration: none;
}

.conf-button.secondary {
  background: #11536f;
}

.paper-card {
  padding: 22px;
}

.paper-card h3 {
  margin: 0 0 12px;
  color: #f5644b;
  font-size: 22px;
  line-height: 1.35;
}

.paper-code {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin-bottom: 10px;
  padding: 4px 9px;
  border-radius: 5px;
  background: #fff2ee;
  color: #11536f;
  font-size: 13px;
  font-weight: 900;
}

.paper-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.paper-meta {
  margin: 8px 0;
  color: #52636d;
  font-size: 14px;
}

.doi {
  color: #0d66b2;
  font-weight: 700;
}

.pdf-frame {
  width: 100%;
  height: 420px;
  margin-top: 18px;
  border: 1px solid #ddd;
  border-radius: 8px;
  background: #f4f4f4;
}

.conf-footer {
  padding: 28px 5%;
  background: #263238;
  color: #fff;
  text-align: center;
}

@media (max-width: 1024px) {
  .conf-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .conf-hero-inner.with-cover {
    grid-template-columns: minmax(0, 1fr) 300px;
  }
}

@media (max-width: 760px) {
  .conf-nav {
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    padding: 10px 5%;
  }

  .conf-brand img {
    height: 50px;
  }

  .conf-brand small {
    display: none;
  }

  .conf-menu-button {
    display: inline-flex;
    margin-left: auto;
  }

  .conf-links {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 4px;
    padding: 8px 0 4px;
    border-top: 1px solid #f1e3de;
    font-size: 15px;
  }

  .conf-links a {
    width: 100%;
    min-height: 42px;
    padding: 9px 12px;
  }

  .conf-menu-toggle:checked ~ .conf-links {
    display: flex;
  }

  .conf-hero-inner.with-cover {
    grid-template-columns: 1fr;
  }

  .conf-cover-wrap {
    max-width: 340px;
  }

  .conf-grid,
  .issue-grid {
    grid-template-columns: 1fr;
  }

  .conf-hero {
    padding-top: 36px;
  }

  .pdf-frame {
    height: 320px;
  }
}