@namespace url(http://www.w3.org/1999/xhtml);

@-moz-document domain("www.nicovideo.jp") {
  body#PAGETOP {
    background-image : none !important;
  }

  .bg_headmenu:not(:hover) > * {
    visibility : hidden !important;
  }

  body.mode_1 .bg_headmenu {
    height : 30px !important;
    position : absolute !important;
  }

  body.mode_1 .bg_headmenu + .body_984 {
    padding-top : 10px !important;
  }

  body.mode_2 {
    padding-top : 10px !important;
  }

  body.mode_1 .bg_headmenu:not(:hover),
  body.mode_2 .bg_headmenu:not(:hover) {
    top : -20px !important;
  }
}

/* ニコニコ生放送用 */
@-moz-document domain("live.nicovideo.jp") {
  #navi {
    position : absolute !important;
    z-index : 10 !important;
    margin-bottom : 0 !important;
  }

  #navi:not(:hover) {
    top : -18px !important;
  }

  #navi:not(:hover) * {
    visibility : hidden !important;
  }

  #wrapper {
    padding-top : 15px !important;
  }
}

/* チャンネル＆コミュニティ用 */
@-moz-document domain("ch.nicovideo.jp") {
  body {
    background-image : none !important;
    width : 100% !important;
    min-width : 960px !important;
  }

  body > *:not([id^="autopagerize"]) {
    width : 960px !important;
    margin-left : auto !important;
    margin-right : auto !important;
  }

  #site-head {
    width : 100% !important;
  }

  #service {
    position : absolute !important;
    width : 100% !important;
    margin : 0 !important;
  }

  #service:not(:hover) {
    top : -22px !important;
  }

  #service:not(:hover) * {
    visibility : hidden !important;
  }

  #header {
    padding-top : 10px !important;
  }
}

/* ニコニコモンズ用 */
@-moz-document domain("www.niconicommons.jp") {
  #PAGETOP + .nicomenu {
    position : absolute !important;
    top  : -17px !important;
    left : 0 !important;
    width : 100% !important;
    height : 27px !important;
    z-index : 100 !important;
    background : #fff url("http://com.res.nicovideo.jp/img/bg.gif") repeat-x center top;
  }

  #PAGETOP + .nicomenu:hover{
    top : 0 !important;
  }

  #PAGETOP + .nicomenu:not(:hover) > * {
    visibility : hidden !important;
  }

  #wrapper-bg {
    margin-bottom : 10px !important;
  }

  .nicomenu_list,
  .nicomenu_menu {
    padding : 0 !important;
    line-height : 23px !important;
  }
}

/* ニコニコ大百科用 */
@-moz-document domain("dic.nicovideo.jp") {
  #topline {
    position : absolute !important;
    background-color : transparent !important;
    height : 28px !important;
    z-index : 100 !important;
  }

  #topline:not(:hover) {
    top : -18px !important;
  }

  #topline:not(:hover) > * {
    visibility : hidden !important;
  }

  #header {
    padding-top : 10px !important;
    background-color : #fff !important;
    background-position : bottom !important;
  }

  #topbarMenu {
    position : static !important;
    display : inline-block !important;
    vertical-align : top !important;
    margin-left : -4em !important;
    margin-top : 1em !important;
    margin-bottom : -100px !important;
  }

  #topbarMenu[style^="display: none;"] {
    display : none !important
  }
}

/* ニコニコ市場用 */
@-moz-document domain("ichiba.nicovideo.jp") {
  #headerInfoContainer {
    position : absolute !important;
    width : 100% !important;
  }

  #headerInfoContainer:not(:hover) {
    top : -14px !important;
  }

  #headerInfoContainer:not(:hover) * {
    visibility : hidden !important;
  }

  #header {
    margin-top : 0 !important;
    padding-top : 15px !important;
  }
}

/* ニコニ広告用 */
@-moz-document domain("uad.nicovideo.jp") {
  #bar {
    position : absolute !important;
    top : -16px !important;
    left : 0 !important;
    height : 26px !important;
    width : 100% !important;
    z-index : 100 !important;
  }

  #bar:hover{
    top : 0 !important;
  }

  #bar:not(:hover) > * {
    visibility : hidden !important;
  }

  #header {
    padding-top : 10px !important;
  }
}

/* ニコニコアニメチャンネルのヘッダを消す */
@-moz-document domain("anime-ch.nicovideo.jp") {
  html {
    overflow-x : auto !important;
  }

  body {
    min-width : 1002px !important;
    overflow-x : hidden !important;
  }

  body,
  #wrapper-bg2 {
    background-position : 0 -26px !important;
  }

  #header {
    margin-top : -16px !important;
  }

  #headtxt-top {
    position : absolute !important;
    left : 0 !important;
    top : 0 !important;
    height : 26px !important;
    width : 100% !important;
    padding : 0 10000px !important;
    margin : 0 -10000px !important;
    z-index : 100 !important;
  }

  #headtxt-top:hover {
    top : 16px !important;
  }

  #headtxt-top:not(:hover) > * {
    visibility : hidden !important;
  }

  #headtxt-top + div {
    margin-top : 0 !important;
    padding-top : 37px !important;
  }
}