.slide-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  max-width: 520px;
  height: 100%;
  background: #f5f5f5;
  z-index: 100;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
}

.slide-menu.is-open {
  transform: translateX(0);
}

.slide-menu__header {
  display: flex;
  justify-content: flex-end;
  padding: 16px;
}

.slide-menu__close {
  width: 24px;
  height: 24px;
  padding: 0;
  border: none;
  background: none;
  cursor: pointer;
}

.slide-menu__search {
  padding: 0 16px 16px;
}

.slide-menu__search-inner {
  display: flex;
  align-items: center;
  border: none;
  border-bottom: 1px solid #ddd;
  border-radius: 0;
  overflow: hidden;
  background: #fff;
}

.slide-menu__search-input {
  flex: 1;
  border: none;
  background: transparent;
  padding: 10px 12px;
  font-size: 14px;
  color: #333;
  outline: none;
  -webkit-appearance: none;
}

.slide-menu__search-input::placeholder {
  color: #aaa;
}

.slide-menu__search-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  background: none;
  cursor: pointer;
  flex-shrink: 0;
}

/* Nav */
.slide-menu__nav {
  padding: 16px;
}

/* Icon nav (TOP, 新着記事, ランキング, オリジナル記事) */
.slide-menu__icons {
  display: flex;
  justify-content: center;
  gap: 4px;
  padding: 8px 0 24px;
}

.slide-menu__icon-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  text-decoration: none;
  color: #343432;
  font-size: 11px;
  border-radius: 8px;
  transition: background 0.2s ease;
}

.slide-menu__icon-link:active {
  background: rgba(0, 0, 0, 0.04);
}

/* Category section */
.slide-menu__category-header {
  text-align: center;
  padding-bottom: 16px;
}

.slide-menu__category-eng {
  display: block;
  font-family: var(--font-en, "Montserrat", sans-serif);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 2px;
  color: #333;
}

.slide-menu__category-jpn {
  display: block;
  font-size: 11px;
  color: #999;
  margin-top: 2px;
  letter-spacing: 1px;
}

.slide-menu__category-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.slide-menu__category-item {
  background: #fff;
  border-radius: 8px;
}

.slide-menu__category-link {
  display: flex;
  align-items: center;
  padding: 18px 20px;
  color: #343432;
  font-size: 14px;
  text-decoration: none;
  position: relative;
}

.slide-menu__category-link::after {
  content: "";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
  width: 6px;
  height: 6px;
  border-top: 1.5px solid #ccc;
  border-right: 1.5px solid #ccc;
}

/* Overlay */
.slide-menu__overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.slide-menu__overlay.is-visible {
  opacity: 1;
  visibility: visible;
}