:root {
  --mm-header-height: 76px;
  --mm-black: #0a0a0c;
  --mm-dark-card: #15151a;
  --mm-dark-line: #2c2c33;

  --mm-white: #ffffff;
  --mm-light: #f7f7f5;
  --mm-light-line: #e6e6e8;

  --mm-text: #0a0a0c;
  --mm-muted: #77777f;
  --mm-muted-dark: #a1a1aa;

  --mm-lime: #a6ff00;
  --mm-lime-soft: #d8ff8a;

  --mm-radius: 24px;
  --mm-transition: 150ms ease;
}

.mm-header,
.mm-header *,
.mm-header *::before,
.mm-header *::after {
  box-sizing: border-box;
}

.mm-header {
  position: fixed;
  z-index: 50;
  top: 0;
  right: 0;
  left: 0;

  height: var(--mm-header-height);

  color: var(--mm-text);
  border-bottom: 1px solid var(--mm-light-line);

  font-family:
    system-ui,
    "Segoe UI",
    "Hiragino Sans",
    "Noto Sans JP",
    sans-serif;
}

/*
 * 白の半透明とぼかしは、ヘッダー本体ではなく ::before に持たせる（ブルー検収 2026-10-02）。
 * 本体に backdrop-filter を付けると、中の position: fixed（スマホ用メニュー）の基準がヘッダーになり、
 * メニューが高さ 0 に潰れて後ろのページが見えたままになる。
 */
.mm-header::before {
  content: "";

  position: absolute;
  z-index: -1;
  inset: 0;

  background: rgba(255, 255, 255, 0.92);

  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.mm-shell {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;

  width: 100%;
  max-width: 1440px;
  height: var(--mm-header-height);

  margin: 0 auto;
  padding: 0 clamp(16px, 2.5vw, 34px);
}

.mm-header .logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;

  min-width: 0;
  text-decoration: none;
}

.mm-header .logo img {
  display: block;
  width: auto;
  max-width: none;
}

.mm-header .logo-word {
  object-fit: contain;
}

/* =========================
   デスクトップ上段ナビ
   ========================= */

.mm-nav {
  display: flex;
  align-items: stretch;
  justify-content: center;

  height: var(--mm-header-height);
  min-width: 0;

  margin: 0 18px;
}

.mm-nav-item {
  display: flex;
  align-items: center;

  height: var(--mm-header-height);
}

.mm-top-fallback,
.mm-top-trigger,
.mm-top-link {
  position: relative;

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;

  min-height: 44px;

  margin: 0;
  padding: 0 13px;

  color: var(--mm-text);
  background: transparent;
  border: 0;
  border-radius: 12px;

  font: inherit;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;

  cursor: pointer;

  transition:
    color var(--mm-transition),
    background-color var(--mm-transition);
}

.mm-top-trigger {
  display: none;
  appearance: none;
  -webkit-appearance: none;
}

.mm-js .mm-top-fallback {
  display: none;
}

.mm-js .mm-top-trigger {
  display: inline-flex;
}

.mm-top-fallback:hover,
.mm-top-trigger:hover,
.mm-top-link:hover {
  background: var(--mm-light);
}

.mm-top-trigger[aria-expanded="true"] {
  background: var(--mm-light);
}

.mm-caret {
  display: inline-block;

  font-size: 11px;
  line-height: 1;

  transform-origin: 50% 50%;
  transition: transform var(--mm-transition);
}

.mm-top-trigger[aria-expanded="true"] .mm-caret {
  transform: rotate(180deg);
}

/* 現在ページ */
.mm-top-trigger[aria-current="page"],
.mm-top-link[aria-current="page"],
.mm-action-login[aria-current="page"],
.mm-mobile-action[aria-current="page"] {
  font-weight: 800;
}

.mm-top-trigger[aria-current="page"]::after,
.mm-top-link[aria-current="page"]::after,
.mm-action-login[aria-current="page"]::after {
  position: absolute;

  right: 50%;
  bottom: 4px;

  width: 5px;
  height: 5px;

  background: var(--mm-lime);
  border-radius: 999px;

  content: "";
  transform: translateX(50%);
}

/* =========================
   右側
   ========================= */

.mm-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;

  min-width: max-content;
}

.mm-desktop-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.mm-action-login {
  position: relative;

  display: inline-flex;
  align-items: center;
  justify-content: center;

  min-height: 44px;
  padding: 0 12px;

  color: var(--mm-text);
  border-radius: 12px;

  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.mm-action-login:hover {
  background: var(--mm-light);
}

.mm-download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;

  min-height: 46px;
  padding: 0 19px;

  color: var(--mm-white);
  background: var(--mm-black);
  border: 1px solid var(--mm-black);
  border-radius: 999px;

  font-size: 14px;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;

  transition:
    color var(--mm-transition),
    background-color var(--mm-transition),
    border-color var(--mm-transition);
}

.mm-download-button:hover {
  color: var(--mm-black);
  background: var(--mm-lime);
  border-color: var(--mm-lime);
}

.mm-mobile-toggle {
  display: none;
}

/* =========================
   メガメニュー本体
   ========================= */

.mm-panel {
  position: absolute;
  z-index: 49;

  top: var(--mm-header-height);
  left: 50%;

  width: min(1240px, calc(100vw - 32px));

  color: var(--mm-white);
  background: var(--mm-black);
  border: 1px solid var(--mm-dark-line);
  border-radius: var(--mm-radius);

  opacity: 0;
  visibility: hidden;
  pointer-events: none;

  transform: translate(-50%, -7px);

  transition:
    opacity var(--mm-transition),
    transform var(--mm-transition),
    visibility 0s linear 150ms;
}

.mm-nav-item.is-open > .mm-panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;

  transform: translate(-50%, 0);

  transition:
    opacity var(--mm-transition),
    transform var(--mm-transition),
    visibility 0s linear 0s;
}

.mm-panel-inner {
  width: 100%;
  overflow: hidden;

  border-radius: calc(var(--mm-radius) - 1px);
}

.mm-product-grid {
  display: grid;
  grid-template-columns:
    minmax(0, 1.15fr)
    minmax(0, 0.85fr)
    minmax(0, 1.1fr)
    minmax(240px, 0.9fr);

  width: 100%;
}

.mm-two-column-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));

  width: 100%;
}

.mm-panel-section {
  min-width: 0;
  padding: 28px 28px 30px;
}

.mm-product-grid > .mm-panel-section + .mm-panel-section,
.mm-two-column-grid > .mm-panel-section + .mm-panel-section {
  border-left: 1px solid var(--mm-dark-line);
}

.mm-section-title {
  margin: 0 10px 14px;

  color: var(--mm-muted-dark);

  font-size: 12px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.06em;
}

/* =========================
   パネル内リンク
   ========================= */

.mm-menu-link {
  display: block;

  margin: 2px 0;
  padding: 12px 10px;

  color: var(--mm-white);
  border-radius: 14px;

  text-decoration: none;

  transition:
    color var(--mm-transition),
    background-color var(--mm-transition);
}

.mm-menu-link:hover {
  background: var(--mm-dark-card);
}

.mm-menu-link-title {
  display: block;

  color: var(--mm-white);

  font-size: 15px;
  font-weight: 800;
  line-height: 1.4;

  transition: color var(--mm-transition);
}

.mm-menu-link:hover .mm-menu-link-title {
  color: var(--mm-lime);
}

.mm-menu-link-desc {
  display: block;

  margin-top: 5px;

  color: var(--mm-muted-dark);

  font-size: 12px;
  font-weight: 500;
  line-height: 1.65;
}

.mm-menu-link-compact {
  min-height: 46px;
}

.mm-external {
  margin-left: 2px;
  font-weight: 700;
}

/* =========================
   準備中
   ========================= */

.mm-coming-item {
  padding: 11px 10px 12px;
}

.mm-coming-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.mm-coming-name {
  color: #d7d7db;

  font-size: 14px;
  font-weight: 700;
  line-height: 1.45;
}

.mm-coming-badge {
  flex: 0 0 auto;

  padding: 3px 7px;

  color: var(--mm-muted-dark);
  border: 1px solid #4a4a52;
  border-radius: 999px;

  font-size: 10px;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
}

.mm-coming-desc {
  margin: 5px 0 0;

  color: var(--mm-muted-dark);

  font-size: 12px;
  line-height: 1.6;
}

/* =========================
   注目カード
   ========================= */

.mm-feature-wrap {
  display: flex;

  min-width: 0;
  padding: 20px;

  border-left: 1px solid var(--mm-dark-line);
}

.mm-feature-card {
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: space-between;

  min-height: 210px;
  padding: 24px;

  color: var(--mm-white);
  background: var(--mm-dark-card);
  border: 1px solid var(--mm-lime);
  border-radius: 20px;

  text-decoration: none;

  transition:
    background-color var(--mm-transition),
    border-color var(--mm-transition);
}

.mm-feature-card:hover {
  background: #1b1b20;
  border-color: var(--mm-lime-soft);
}

.mm-feature-kicker {
  color: var(--mm-lime);

  font-size: 12px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: 0.05em;
}

.mm-feature-title {
  display: block;

  margin: 20px 0;

  color: var(--mm-white);

  font-size: clamp(18px, 1.6vw, 24px);
  font-weight: 800;
  line-height: 1.45;
}

.mm-feature-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;

  color: var(--mm-white);

  font-size: 13px;
  font-weight: 800;
}

/* =========================
   フォーカス
   ========================= */

.mm-header a:focus-visible,
.mm-header button:focus-visible {
  outline: 3px solid var(--mm-lime);
  outline-offset: 3px;
}

.mm-panel a:focus-visible {
  position: relative;
  z-index: 2;
}

/* =========================
   スクリーンリーダー用
   ========================= */

.mm-sr-only {
  position: absolute !important;

  width: 1px !important;
  height: 1px !important;

  padding: 0 !important;
  margin: -1px !important;

  overflow: hidden !important;

  clip: rect(0, 0, 0, 0) !important;
  clip-path: inset(50%) !important;

  white-space: nowrap !important;

  border: 0 !important;
}

/* =========================
   モバイル
   ========================= */

.mm-mobile-actions {
  display: none;
}

.mm-mobile-toggle-close {
  display: none;
}

@media (max-width: 900px) {
  .mm-shell {
    grid-template-columns: minmax(0, 1fr) auto;

    padding: 0 14px;
  }

  .mm-header .logo {
    justify-self: start;
  }

  .mm-header .logo img:first-child {
    height: 40px;
  }

  .mm-header .logo-word {
    height: 29px;
  }

  .mm-desktop-actions {
    display: none;
  }

  /*
   * JS 無効時:
   * ハンバーガーは動かせないので表示せず、
   * フォールバックのリンク一覧を開いた状態にする。
   */
  .mm-nav {
    position: fixed;
    z-index: 49;

    top: var(--mm-header-height);
    right: 0;
    bottom: 0;
    left: 0;

    display: block;

    width: 100%;
    height: auto;

    margin: 0;
    padding: 16px 18px 30px;

    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;

    color: var(--mm-white);
    background: var(--mm-black);
  }

  .mm-js .mm-nav {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;

    transform: translateY(-8px);

    transition:
      opacity var(--mm-transition),
      transform var(--mm-transition),
      visibility 0s linear 150ms;
  }

  .mm-js .mm-header.mm-mobile-open .mm-nav {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;

    transform: translateY(0);

    transition:
      opacity var(--mm-transition),
      transform var(--mm-transition),
      visibility 0s linear 0s;
  }

  .mm-nav-item {
    display: block;

    width: 100%;
    height: auto;

    border-bottom: 1px solid var(--mm-dark-line);
  }

  .mm-top-fallback,
  .mm-top-trigger,
  .mm-top-link {
    justify-content: space-between;

    width: 100%;
    min-height: 56px;

    margin: 0;
    padding: 0 4px;

    color: var(--mm-white);
    background: transparent;
    border-radius: 10px;

    font-size: 16px;
    text-align: left;
  }

  .mm-top-fallback:hover,
  .mm-top-trigger:hover,
  .mm-top-link:hover,
  .mm-top-trigger[aria-expanded="true"] {
    color: var(--mm-lime);
    background: transparent;
  }

  .mm-top-trigger[aria-current="page"]::after,
  .mm-top-link[aria-current="page"]::after {
    top: 50%;
    right: 4px;
    bottom: auto;

    transform: translateY(-50%);
  }

  .mm-js .mm-top-trigger {
    display: flex;
  }

  .mm-panel {
    position: static;

    display: grid;
    grid-template-rows: 0fr;

    width: 100%;

    background: transparent;
    border: 0;
    border-radius: 0;

    opacity: 0;
    visibility: hidden;
    pointer-events: none;

    transform: none;

    transition:
      grid-template-rows var(--mm-transition),
      opacity var(--mm-transition),
      visibility 0s linear 150ms;
  }

  .mm-nav-item.is-open > .mm-panel {
    grid-template-rows: 1fr;

    opacity: 1;
    visibility: visible;
    pointer-events: auto;

    transform: none;

    transition:
      grid-template-rows var(--mm-transition),
      opacity var(--mm-transition),
      visibility 0s linear 0s;
  }

  .mm-panel-inner {
    min-height: 0;
    overflow: hidden;

    border-radius: 0;
  }

  .mm-product-grid,
  .mm-two-column-grid {
    display: block;

    padding: 0 0 16px;
  }

  .mm-panel-section {
    padding: 12px 0 10px;
  }

  .mm-product-grid > .mm-panel-section + .mm-panel-section,
  .mm-two-column-grid > .mm-panel-section + .mm-panel-section {
    border-top: 1px solid var(--mm-dark-line);
    border-left: 0;
  }

  .mm-section-title {
    margin: 8px 4px 8px;

    font-size: 11px;
  }

  .mm-menu-link {
    min-height: 52px;

    margin: 0;
    padding: 12px 10px;
  }

  .mm-menu-link-title {
    font-size: 15px;
  }

  .mm-menu-link-desc {
    font-size: 12px;
  }

  .mm-coming-item {
    padding: 12px 10px;
  }

  .mm-feature-wrap {
    padding: 16px 0 4px;

    border-top: 1px solid var(--mm-dark-line);
    border-left: 0;
  }

  .mm-feature-card {
    min-height: 170px;
    padding: 20px;
  }

  .mm-feature-title {
    font-size: 20px;
  }

  .mm-mobile-actions {
    display: grid;
    gap: 10px;

    padding: 20px 0 10px;
  }

  .mm-mobile-action,
  .mm-mobile-download {
    display: flex;
    align-items: center;
    justify-content: center;

    min-height: 52px;

    border-radius: 999px;

    font-size: 15px;
    font-weight: 800;
    text-decoration: none;
  }

  .mm-mobile-action {
    position: relative;

    color: var(--mm-white);
    border: 1px solid var(--mm-dark-line);
  }

  .mm-mobile-download {
    gap: 7px;

    color: var(--mm-black);
    background: var(--mm-lime);
    border: 1px solid var(--mm-lime);
  }

  .mm-mobile-toggle {
    display: none;

    place-items: center;

    width: 48px;
    height: 48px;

    margin: 0;
    padding: 0;

    color: var(--mm-black);
    background: transparent;
    border: 0;
    border-radius: 14px;

    font: inherit;
    font-size: 27px;
    line-height: 1;

    cursor: pointer;

    appearance: none;
    -webkit-appearance: none;
  }

  .mm-js .mm-mobile-toggle {
    display: grid;
  }

  .mm-mobile-toggle:hover {
    background: var(--mm-light);
  }

  .mm-mobile-toggle[aria-expanded="true"] .mm-mobile-toggle-open {
    display: none;
  }

  .mm-mobile-toggle[aria-expanded="true"] .mm-mobile-toggle-close {
    display: inline;
  }

  body.mm-scroll-lock {
    overflow: hidden;
  }
}

/* 小さいスマホではワードマークだけ少し縮める */
@media (max-width: 430px) {
  .mm-header .logo {
    gap: 5px;
  }

  .mm-header .logo img:first-child {
    height: 36px;
  }

  .mm-header .logo-word {
    height: 25px;
  }
}

/* =========================
   動きを減らす設定
   ========================= */

@media (prefers-reduced-motion: reduce) {
  .mm-header *,
  .mm-header *::before,
  .mm-header *::after {
    scroll-behavior: auto !important;
    transition-duration: 0s !important;
    animation-duration: 0s !important;
    animation-iteration-count: 1 !important;
  }
}