/* =============================================================
   摩登娱乐 · MODERN COLLAGE —— 02 layout（外壳 / 导航 / 页脚 / 栅格）
   ============================================================= */

@layer shell {
  /* ---------------- 顶栏 ---------------- */
  .mo-top {
    position: sticky;
    top: 0;
    z-index: 90;
    background: var(--mo-paper-soft);
    border-bottom: var(--mo-edge) solid var(--mo-ink);
  }

  .mo-top.is-stuck { box-shadow: 0 7px 0 rgba(23, 19, 15, .12); }

  .mo-top__strip {
    background: var(--mo-ink);
    color: var(--mo-paper);
  }

  .mo-top__strip-in {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 34px;
    padding-block: 5px;
  }

  .mo-top__note {
    color: var(--mo-paper);
    font-size: .78rem;
    letter-spacing: .04em;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .mo-top__note::before {
    content: "";
    width: 9px;
    height: 9px;
    background: var(--mo-mint);
    border-radius: 50%;
    box-shadow: 0 0 0 3px rgba(127, 236, 187, .22);
  }

  .mo-top__meta {
    display: flex;
    align-items: center;
    gap: 18px;
    font-family: var(--mo-mono);
    font-size: .72rem;
    letter-spacing: .1em;
  }

  .mo-top__meta li { display: flex; align-items: center; gap: 6px; }
  .mo-top__meta a { color: var(--mo-paper); }
  .mo-top__meta a:hover { color: var(--mo-mint); }
  .mo-top__meta span { color: #b9ad9a; }

  .mo-top__main {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding-block: 12px;
  }

  /* ---------------- 标识 ---------------- */
  .mo-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
  }

  .mo-logo__mark {
    display: grid;
    place-items: center;
    width: 46px;
    height: 46px;
    font-family: var(--mo-mono);
    font-size: 1.28rem;
    font-weight: 700;
    color: var(--mo-paper-soft);
    background: var(--mo-ink);
    border-radius: 50% 50% 4px 50%;
    transform: rotate(-6deg);
    transition: transform var(--mo-mid) var(--mo-ease), background var(--mo-fast);
  }

  .mo-logo:hover .mo-logo__mark {
    transform: rotate(4deg);
    background: var(--mo-coral);
  }

  .mo-logo__txt {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
  }

  .mo-logo__txt strong {
    font-size: 1.14rem;
    font-weight: 900;
    letter-spacing: .06em;
  }

  .mo-logo__txt em {
    font-family: var(--mo-mono);
    font-style: normal;
    font-size: .62rem;
    letter-spacing: .22em;
    color: var(--mo-ink-soft);
    text-transform: uppercase;
  }

  /* ---------------- 导航 ---------------- */
  .mo-nav {
    display: flex;
    align-items: center;
    gap: 22px;
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .mo-nav__list {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
  }

  .mo-nav__list a {
    position: relative;
    display: inline-block;
    padding: 8px 12px;
    font-size: .93rem;
    font-weight: 600;
    border: 2px solid transparent;
    border-radius: var(--mo-radius);
    transition: background var(--mo-fast), border-color var(--mo-fast), transform var(--mo-fast);
  }

  .mo-nav__list a:hover {
    background: var(--mo-sun-soft);
    border-color: var(--mo-ink);
    transform: translate(-2px, -2px);
  }

  .mo-nav__list a[aria-current="page"] {
    background: var(--mo-ink);
    color: var(--mo-paper-soft);
    border-color: var(--mo-ink);
  }

  .mo-nav__list a[aria-current="page"]::after {
    content: "";
    position: absolute;
    left: 8px;
    right: 8px;
    bottom: 3px;
    height: 2px;
    background: var(--mo-mint);
  }

  .mo-nav__cta {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .mo-burger {
    display: none;
    align-items: center;
    gap: 8px;
    padding: 9px 14px;
    font-family: var(--mo-mono);
    font-size: .74rem;
    letter-spacing: .14em;
    background: var(--mo-paper);
    border: var(--mo-edge) solid var(--mo-ink);
    border-radius: 999px;
    box-shadow: var(--mo-shift-sm) var(--mo-shift-sm) 0 var(--mo-ink);
  }

  .mo-burger::before {
    content: "";
    width: 16px;
    height: 10px;
    border-top: 2px solid var(--mo-ink);
    border-bottom: 2px solid var(--mo-ink);
  }

  /* ---------------- 跑马灯 ---------------- */
  .mo-ticker {
    overflow: hidden;
    background: var(--mo-sun);
    border-bottom: var(--mo-edge) solid var(--mo-ink);
    padding-block: 7px;
  }

  .mo-ticker__track {
    display: flex;
    width: max-content;
    gap: 42px;
    animation: mo-slide 38s linear infinite;
    animation-play-state: paused;
  }

  .mo-ticker.is-ready .mo-ticker__track { animation-play-state: running; }

  .mo-ticker__item {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--mo-mono);
    font-size: .74rem;
    letter-spacing: .14em;
    text-transform: uppercase;
    white-space: nowrap;
    color: var(--mo-ink);
  }

  .mo-ticker__item::before {
    content: "◆";
    font-size: .62rem;
    color: var(--mo-coral);
  }

  @keyframes mo-slide {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
  }

  /* ---------------- 区块骨架 ---------------- */
  .mo-section {
    padding-block: var(--mo-section-y);
    position: relative;
  }

  .mo-section--tight { padding-block: clamp(36px, 5vw, 62px); }

  .mo-band {
    border-block: var(--mo-edge) solid var(--mo-ink);
    background: var(--mo-card);
  }

  .mo-band--ink {
    background: var(--mo-ink);
    color: var(--mo-paper);
  }

  .mo-band--ink p { color: #cfc4b3; }
  .mo-band--ink h2, .mo-band--ink h3, .mo-band--ink strong { color: var(--mo-paper-soft); }

  .mo-band--mint { background: var(--mo-mint-soft); }
  .mo-band--lilac { background: var(--mo-lilac-soft); }

  .mo-sechead {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 18px;
    align-items: start;
    margin-bottom: clamp(26px, 4vw, 46px);
  }

  .mo-sechead__no {
    display: grid;
    place-items: center;
    min-width: 54px;
    padding: 6px 10px;
    font-family: var(--mo-mono);
    font-size: .78rem;
    letter-spacing: .08em;
    color: var(--mo-paper-soft);
    background: var(--mo-ink);
    border-radius: var(--mo-radius);
    transform: rotate(-3deg);
  }

  .mo-sechead__body h2 { margin-bottom: 8px; }

  .mo-sechead__body p {
    max-width: 62ch;
    font-size: .98rem;
  }

  .mo-sechead--center {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }

  .mo-sechead--center .mo-sechead__body p { margin-inline: auto; }

  /* ---------------- 面包屑 ---------------- */
  .mo-crumb {
    background: var(--mo-paper-soft);
    border-bottom: 2px dashed var(--mo-line);
    padding-block: 12px;
    font-family: var(--mo-mono);
    font-size: .72rem;
    letter-spacing: .1em;
  }

  .mo-crumb ol {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    color: var(--mo-ink-soft);
  }

  .mo-crumb li { display: flex; align-items: center; gap: 8px; }
  .mo-crumb li + li::before { content: "/"; color: var(--mo-line); }
  .mo-crumb a:hover { color: var(--mo-cobalt); }
  .mo-crumb [aria-current="page"] { color: var(--mo-ink); }

  /* ---------------- 页脚 ---------------- */
  .mo-foot {
    margin-top: clamp(40px, 6vw, 76px);
    background: var(--mo-ink);
    color: var(--mo-paper);
    border-top: var(--mo-edge) solid var(--mo-ink);
  }

  .mo-foot__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: clamp(22px, 4vw, 46px);
    padding-block: clamp(38px, 5vw, 62px);
  }

  .mo-foot__brand p {
    color: #bdb2a1;
    font-size: .9rem;
    margin-top: 14px;
    max-width: 34ch;
  }

  .mo-foot .mo-logo__mark {
    background: var(--mo-paper-soft);
    color: var(--mo-ink);
  }

  .mo-foot .mo-logo__txt strong { color: var(--mo-paper-soft); }
  .mo-foot .mo-logo__txt em { color: #9d9182; }

  .mo-foot__col h3 {
    font-size: .82rem;
    font-family: var(--mo-mono);
    font-weight: 700;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--mo-mint);
    margin-bottom: 14px;
  }

  .mo-foot__col li + li { margin-top: 9px; }

  .mo-foot__col a {
    font-size: .9rem;
    color: #d8cec0;
    border-bottom: 1px solid transparent;
    transition: color var(--mo-fast), border-color var(--mo-fast);
  }

  .mo-foot__col a:hover {
    color: var(--mo-sun);
    border-color: var(--mo-sun);
  }

  .mo-foot__addr {
    font-style: normal;
    font-size: .88rem;
    color: #bdb2a1;
    line-height: 1.9;
  }

  .mo-foot__addr strong { color: var(--mo-paper-soft); display: block; margin-bottom: 4px; }

  .mo-foot__legal {
    border-top: 1px solid #3a332c;
    padding-block: 22px;
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 22px;
  }

  .mo-foot__legal h4 {
    font-family: var(--mo-mono);
    font-size: .72rem;
    letter-spacing: .16em;
    color: var(--mo-coral);
    margin-bottom: 8px;
  }

  .mo-foot__legal p {
    color: #a89c8c;
    font-size: .82rem;
    line-height: 1.8;
  }

  .mo-foot__legal ul {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px 18px;
  }

  .mo-foot__legal li {
    position: relative;
    padding-left: 16px;
    font-size: .82rem;
    color: #a89c8c;
  }

  .mo-foot__legal li::before {
    content: "×";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--mo-coral);
    font-weight: 700;
  }

  .mo-foot__base {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px;
    border-top: 1px solid #3a332c;
    padding-block: 16px 22px;
    font-family: var(--mo-mono);
    font-size: .7rem;
    letter-spacing: .08em;
    color: #8d8273;
  }

  /* ---------------- 回到顶部 ---------------- */
  .mo-totop {
    position: fixed;
    right: 18px;
    bottom: 20px;
    z-index: 80;
    display: grid;
    place-items: center;
    width: 46px;
    height: 46px;
    font-family: var(--mo-mono);
    font-size: .68rem;
    letter-spacing: .04em;
    color: var(--mo-ink);
    background: var(--mo-sun);
    border: var(--mo-edge) solid var(--mo-ink);
    border-radius: 50%;
    box-shadow: var(--mo-shift-sm) var(--mo-shift-sm) 0 var(--mo-ink);
    opacity: 0;
    pointer-events: none;
    transform: translateY(14px);
    transition: opacity var(--mo-mid), transform var(--mo-mid);
  }

  .mo-totop.is-on { opacity: 1; pointer-events: auto; transform: none; }

  /* ---------------- 响应式 ---------------- */
  @media (max-width: 1080px) {
    .mo-foot__grid { grid-template-columns: 1fr 1fr; }
    .mo-foot__legal { grid-template-columns: 1fr; }
  }

  @media (max-width: 940px) {
    .mo-burger { display: inline-flex; }

    .mo-nav {
      position: fixed;
      inset: 0 0 0 auto;
      width: min(360px, 88vw);
      flex-direction: column;
      align-items: stretch;
      justify-content: flex-start;
      gap: 14px;
      padding: 84px 24px 32px;
      background: var(--mo-paper-soft);
      border-left: var(--mo-edge) solid var(--mo-ink);
      box-shadow: -14px 0 0 rgba(23, 19, 15, .1);
      transform: translateX(102%);
      transition: transform var(--mo-mid) var(--mo-ease);
      overflow-y: auto;
    }

    .mo-nav.is-open { transform: none; }

    .mo-nav__list {
      flex-direction: column;
      align-items: stretch;
      gap: 2px;
    }

    .mo-nav__list a {
      display: block;
      padding: 12px 14px;
      border-bottom: 2px dashed var(--mo-line);
      font-size: 1rem;
    }

    .mo-nav__list a:hover { transform: none; }

    .mo-nav__cta {
      flex-direction: column;
      align-items: stretch;
      margin-top: 10px;
    }

    .mo-nav__cta .mo-btn { justify-content: center; }

    body.mo-lock { overflow: hidden; }
  }

  @media (max-width: 720px) {
    .mo-top__note { font-size: .72rem; }
    .mo-top__meta { display: none; }
    .mo-foot__grid { grid-template-columns: 1fr; gap: 26px; }
    .mo-foot__legal ul { grid-template-columns: 1fr; }
    .mo-sechead { grid-template-columns: 1fr; }
    .mo-sechead__no { justify-self: start; }
  }
}