/*** ESSENTIAL STYLES ***/
.sf-menu,
.sf-menu * {
    margin: 0;
    padding: 0;
    list-style: none;
}

.sf-menu {
    line-height: 1.0;
}

.sf-menu ul {
    position: absolute;
    top: -999em;
    width: 13em;
    /* left offset of submenus need to match (see below) */
}

.sf-menu ul li {
    width: 100%;
}

.sf-menu li:hover {
    visibility: inherit;
    /* fixes IE7 'sticky bug' */
}

.sf-menu li {
    float: left;
    position: relative;
}

.sf-menu a {
    display: block;
}

.sf-menu li:hover ul,
.sf-menu li.sfHover ul {
    left: 0;
    top: 2.4em;
    *top: 2.2em;
    /* ie6,7 bug */
    z-index: 99;
}

ul.sf-menu li:hover li ul,
ul.sf-menu li.sfHover li ul {
    top: -999em;
}

ul.sf-menu li li:hover ul,
ul.sf-menu li li.sfHover ul {
    left: 15em;
    /* match ul width */
    top: 0;
}

ul.sf-menu li li:hover li ul,
ul.sf-menu li li.sfHover li ul {
    top: -999em;
}

ul.sf-menu li li li:hover ul,
ul.sf-menu li li li.sfHover ul {
    left: 15em;
    /* match ul width */
    top: 0;
}

/*** DEMO SKIN ***/
.sf-menu a {
    border-left: 1px solid #fff;
    border-top: 1px solid #CFDEFF;
    padding: .75em 1em;
    text-decoration: none;
}

.sf-menu a,
.sf-menu a:visited {
    color: #13a;
}

.sf-menu li {
    background: none;
}

.sf-menu li li {
    background: none;
}

.sf-menu li li li {
    background: none;
}

.sf-menu li:hover,
.sf-menu li.sfHover,
.sf-menu a:focus,
.sf-menu a:hover,
.sf-menu a:active {
    background: none;
    outline: 0;
}

/*** arrows **/
.sf-menu a.sf-with-ul {
    padding-right: 1.8em;
    /*min-width:1px;*/
}

.sf-sub-indicator {
    position: absolute;
    display: block;
    right: .75em;
    top: 1.05em;
    /* IE6 only */
    width: 10px;
    height: 10px;
    text-indent: -999em;
    overflow: hidden;
    background: url('../img/superfish-arrows.gif') no-repeat -10px -100px;
    /* 8-bit indexed alpha png. IE6 gets solid image only */
}

a>.sf-sub-indicator {
    top: .8em;
    background-position: 0 -100px;
    /* use translucent arrow for modern browsers*/
}

/* apply hovers to modern browsers */
a:focus>.sf-sub-indicator,
a:hover>.sf-sub-indicator,
a:active>.sf-sub-indicator,
li:hover>a>.sf-sub-indicator,
li.sfHover>a>.sf-sub-indicator {
    background-position: -10px -100px;
    /* arrow hovers for modern browsers*/
}

/* point right for anchors in subs */
.sf-menu ul .sf-sub-indicator {
    background-position: -10px 0;
}

.sf-menu ul a>.sf-sub-indicator {
    background-position: 0 0;
}

/* apply hovers to modern browsers */
.sf-menu ul a:focus>.sf-sub-indicator,
.sf-menu ul a:hover>.sf-sub-indicator,
.sf-menu ul a:active>.sf-sub-indicator,
.sf-menu ul li:hover>a>.sf-sub-indicator,
.sf-menu ul li.sfHover>a>.sf-sub-indicator {
    background-position: -10px 0;
    /* arrow hovers for modern browsers*/
}

/*** shadows for all but IE6 ***/
.sf-shadow ul {
    background: url('../img/superfish-shadow.png') no-repeat bottom right;
    padding: 0 8px 9px 0;
}

.sf-shadow ul.sf-shadow-off {
    background: transparent;
}

/*** 垂直 adding sf-vertical in addition to sf-menu creates a vertical menu ***/
.sf-vertical,
.sf-vertical li {
    width: 10em;
}

/* this lacks ul at the start of the selector, so the styles from the main CSS file override it where needed */
.sf-vertical li:hover ul,
.sf-vertical li.sfHover ul {
    left: 10em;
    /* match ul width */
    top: 0;
}

/*** alter arrow directions ***/
.sf-vertical .sf-sub-indicator {
    background-position: -10px 0;
}

/* IE6 gets solid image only */
.sf-vertical a>.sf-sub-indicator {
    background-position: 0 0;
}

/* use translucent arrow for modern browsers*/
/* hover arrow direction for modern browsers*/
.sf-vertical a:focus>.sf-sub-indicator,
.sf-vertical a:hover>.sf-sub-indicator,
.sf-vertical a:active>.sf-sub-indicator,
.sf-vertical li:hover>a>.sf-sub-indicator,
.sf-vertical li.sfHover>a>.sf-sub-indicator {
    background-position: -10px 0;
    /* arrow hovers for modern browsers*/
}