@charset "UTF-8";
/*!
 * Bootstrap v4.0.0-beta.3 (https://getbootstrap.com)
 * Copyright 2011-2017 The Bootstrap Authors
 * Copyright 2011-2017 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 */

/****************************************   bbs 业务部分  ****************************************/
html,table{font-size:14px;}
/* BS5 Reboot 默认给 a 加了 text-decoration: underline，这里恢复 BS4 主题的全局无下划线观感 */
a{text-decoration:none;color:var(--bs-body-color);}
a:hover{text-decoration:none;color:var(--bs-link-hover-color);}   /* 所有 a hover 反馈：柔蓝（引用 --bs-link-hover-color） */
/* 顶部导航当前版块高亮：兼容 BS4 机制 —— 高亮类由各页面 htm 的内联 $('li[data-active]').addClass('active') 加在 <li> 上，
   BS5 默认只认 .nav-link.active，故补回 BS4 的 .active > .nav-link 选择器（仅改文字颜色，无半透明背景药丸） */
.navbar-dark .navbar-nav .active > .nav-link,
.navbar-dark .navbar-nav .nav-link.active {
	color: #fff;
}
body{background:#dee2e6;}
html,body{height:100%;display:flex;flex-direction:column;font-family:"Helvetica Neue",Helvetica,"Microsoft Yahei","Hiragino Sans GB","WenQuanYi Micro Hei","微软雅黑","华文细黑",STHeiti,sans-serif;}
/* 页脚固定在底部 */
#header,#body,#footer{width:100%;}
#header{flex:0 0 auto;}
#body{flex:1 0 auto;}
#footer{flex:0 0 auto;}
#body > .container > .row > .aside{padding-left:0;}
.table th{border-top:none;}
.table > tbody > tr:first-child > td{border-top:none;}
/* 恢复 BS4 表格透明背景：BS5 默认 .table 的 --bs-table-bg=var(--bs-body-bg)，而主题把 --bs-body-bg 设为 #fff，导致所有表格变白底 */
.table { --bs-table-bg: transparent; }
/* 恢复 BS4 单元格内边距：BS5 默认 .5rem，BS4 为 .75rem */
.table > :not(caption) > * > * { padding: .75rem .75rem; }
/*
.borde{border:1px solid rgba($black,0.125);border-radius:0.25rem;}
.shadow{box-shadow:2px 2px 3px rgba($gray-600,.25);}
*/
.card{margin-bottom:1rem;background:#f8f9fa;box-shadow:2px 2px 3px rgba(173,181,189,0.25);}
.card > .card-header{color:#454d55;font-size:14px;border-bottom:1px solid #dee2e6;background-image:linear-gradient(0deg,#e9ecef,#f8f9fa);}
.card > .card-block > table > tbody > tr:last-child > td{border-bottom:0px;}
.card-header-tabs > .nav-item > .nav-link:hover:not(.active){border:1px solid #dee2e6;}
.card-header-tabs > .nav-item > .nav-link.active{background-image:linear-gradient(0deg,#f8f9fa,#fff);border-color:#dee2e6;border-bottom-color:#f8f9fa;}
.breadcrumb{display:flex;flex-wrap:wrap;padding:0.5rem 1rem !important;margin-bottom:1rem !important;border-radius:0.25rem;background-color:#f8f9fa !important;border:1px solid #dee2e6;box-shadow:1px 1px 2px rgba(233,236,239,0.25);}
.breadcrumb:hover{background-color:#fff !important;}
.breadcrumb-item+.breadcrumb-item::before{content:"/";color:#adb5bd;padding-right:0.5rem;padding-left:0.5rem;}
.breadcrumb .breadcrumb-item{display:inline-flex;text-overflow:ellipsis;white-space:nowrap;}
.breadcrumb .breadcrumb-item a{max-width:400px;overflow:hidden;text-overflow:ellipsis;}
.card-header-dropdown .dropdown .dropdown-toggle{text-decoration:none;color:#495057;}
.card-header-dropdown .dropdown-menu{min-width:8rem;padding:0.25rem 0;}
.card-header-dropdown .dropdown-menu .dropdown-item{text-decoration:none;padding:0.25rem 0.5rem;}
.card-header-dropdown .dropdown-menu .dropdown-item i{width:12px;}
/* 小屏: only small screen */
@media (max-width:576px){
#body{padding-top:0.5rem;}
#body > .container > .row > div{padding:0.5rem;}
.hidden-sm{display:none !important;}
}
/* 小屏 + 中屏: small + middle */
@media (max-width:992px){
#nav{padding-top:1.5rem;padding-left:0.5rem;}
#nav > ul:first-child > li:not(:first-child){padding-left:3rem;}
#nav > ul > li > a.nav-link{border-bottom:1px solid rgba(134,142,150,0.3);}
}
/* 中屏 + 大屏: middle + big */
@media (min-width:576px){
#body{padding-top:1rem;}
}
.addattach:hover{font-weight:800;}
/*@teax 弥补bootstrap beta3的不足，分页如果过多则换行，防止超出屏幕*/
.pagination{flex-wrap:wrap;}
table.nav_tag_list{margin-bottom:0.2rem;}
table.nav_tag_list td{padding:0.1rem;}
table.nav_tag_list td a{margin-right:0.5rem;}
.nav_tag_list .active{font-weight:800;}
@keyframes quote_animation{
from{background-color:#177f2e;}
to{background-color:#f8f9fa;}
}
li.quote{background-color:#e9ecef;animation:quote_animation 1s;-moz-animation:quote_animation 1s;-webkit-animation:quote_animation 1s;-o-animation:quote_animation 1s;background-image:url(../img/quote.png);background-repeat:no-repeat;background-position:top right;}
.blockquote{font-size:0.8rem;background-color:#e9ecef;background-image:url(../img/quote.png);background-repeat:no-repeat;background-position:top right;padding:0.5rem 1rem !important;}
.blockquote .user{margin-right:0.5rem;}
.thread,.post{border-bottom:1px solid #e9ecef;padding:0.7rem 0px;}
.thread:hover{background-color:white;}
.threadlist > .thread:last-child,.postlist > .post:last-child{border-bottom:0px;}
.message p{margin:0.2rem 0;line-height:1.7;}
.message img{max-width:100%;height:auto !important;border:1px solid #dee2e6;margin-bottom:0.5rem;}
.thread .badge{font-weight:normal;}
.subject{font-size:1.04rem;}
.message{font-size:1.1rem;}
/* 回帖输入框 */
#message{height:2.4rem;transition:height 0.2s;}
/* 导航 */
.navbar h5{font-size:1rem;color:rgba(255,255,255,0.3);margin-top:1.75rem;font-weight:800;}
.navbar nav{padding-bottom:1rem;}
.navbar nav:not(:last-child){border-bottom:1px solid rgba(255,255,255,0.1);}
#mobile_nav .navbar-nav{flex-direction:row;}
#mobile_nav .navbar-nav .nav-link{margin-right:1rem;}
#nav_pc_2{background:#868e96;}
#nav_pc_2 a{color:#e9ecef;}
#nav_pc_2 .active a{color:#fff;font-weight:800;}
/* ===== Font Awesome 4.6.3 图标（从原 BS4 bootstrap.css 还原，避免升级 BS5 后图标丢失）=====
   字体文件位于 view/font/fontawesome-webfont.* ，@font-face 由本段提供。
   原 BS4 把 FontAwesome 直接打进 bootstrap.css，升级 BS5 时被整段覆盖，故在此单独恢复。 */

@font-face{font-family:'FontAwesome';src:url("../font/fontawesome-webfont.eot?v=4.6.3");src:url("../font/fontawesome-webfont.eot?#iefix&v=4.6.3") format("embedded-opentype"),url("../font/fontawesome-webfont.woff2?v=4.6.3") format("woff2"),url("../font/fontawesome-webfont.woff?v=4.6.3") format("woff"),url("../font/fontawesome-webfont.ttf?v=4.6.3") format("truetype"),url("../font/fontawesome-webfont.svg?v=4.6.3#fontawesomeregular") format("svg");font-weight:normal;font-style:normal;}
[class^="icon-"],[class*=" icon-"]{font-family:FontAwesome;font-weight:normal;font-style:normal;text-decoration:inherit;-webkit-font-smoothing:antialiased;*margin-right:.3em;}
@keyframes fa-spin{
0%{-webkit-transform:rotate(0deg);-o-transform:rotate(0deg);transform:rotate(0deg);}
100%{-webkit-transform:rotate(359deg);-o-transform:rotate(359deg);transform:rotate(359deg);}
}
.icon{display:inline-block;font:normal normal normal 14px/1 FontAwesome;font-size:inherit;text-rendering:auto;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;}
/* makes the font 33% larger relative to the icon container */
.icon-lg{font-size:1.33333333em;line-height:0.75em;vertical-align:-15%;}
.icon-2x{font-size:2em;}
.icon-3x{font-size:3em;}
.icon-4x{font-size:4em;}
.icon-5x{font-size:5em;}
.icon-fw{width:1.28571429em;text-align:center;}
.icon-ul{padding-left:0;margin-left:2.14285714em;list-style-type:none;}
.icon-ul > li{position:relative;}
.icon-li{position:absolute;left:-2.14285714em;width:2.14285714em;top:0.14285714em;text-align:center;}
.icon-li.icon-lg{left:-1.85714286em;}
.icon-border{padding:.2em .25em .15em;border:solid 0.08em #eeeeee;border-radius:.1em;}
.icon-pull-left{float:left;}
.icon-pull-right{float:right;}
.icon.icon-pull-left{margin-right:.3em;}
.icon.icon-pull-right{margin-left:.3em;}
.icon.pull-left{margin-right:.3em;}
.icon.pull-right{margin-left:.3em;}
.icon-spin{-webkit-animation:fa-spin 2s infinite linear;-o-animation:fa-spin 2s infinite linear;animation:fa-spin 2s infinite linear;}
.icon-pulse{-webkit-animation:fa-spin 1s infinite steps(8);-o-animation:fa-spin 1s infinite steps(8);animation:fa-spin 1s infinite steps(8);}
.icon-rotate-90{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=1)";-webkit-transform:rotate(90deg);-ms-transform:rotate(90deg);-o-transform:rotate(90deg);transform:rotate(90deg);}
.icon-rotate-180{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=2)";-webkit-transform:rotate(180deg);-ms-transform:rotate(180deg);-o-transform:rotate(180deg);transform:rotate(180deg);}
.icon-rotate-270{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=3)";-webkit-transform:rotate(270deg);-ms-transform:rotate(270deg);-o-transform:rotate(270deg);transform:rotate(270deg);}
.icon-flip-horizontal{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=0,mirror=1)";-webkit-transform:scale(-1,1);-ms-transform:scale(-1,1);-o-transform:scale(-1,1);transform:scale(-1,1);}
.icon-flip-vertical{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=2,mirror=1)";-webkit-transform:scale(1,-1);-ms-transform:scale(1,-1);-o-transform:scale(1,-1);transform:scale(1,-1);}
:root .icon-rotate-90,:root .icon-rotate-180,:root .icon-rotate-270,:root .icon-flip-horizontal,:root .icon-flip-vertical{-webkit-filter:none;filter:none;}
.icon-stack{position:relative;display:inline-block;width:2em;height:2em;line-height:2em;vertical-align:middle;}
.icon-stack-1x,.icon-stack-2x{position:absolute;left:0;width:100%;text-align:center;}
.icon-stack-1x{line-height:inherit;}
.icon-stack-2x{font-size:2em;}
.icon-inverse{color:#ffffff;}
/* Font Awesome uses the Unicode Private Use Area (PUA) to ensure screen readers do not read off random characters that represent icons */
.icon-glass:before{content:"\f000";}
.icon-music:before{content:"\f001";}
.icon-search:before{content:"\f002";}
.icon-envelope-o:before{content:"\f003";}
.icon-heart:before{content:"\f004";}
.icon-star:before{content:"\f005";}
.icon-star-o:before{content:"\f006";}
.icon-user:before{content:"\f007";}
.icon-film:before{content:"\f008";}
.icon-th-large:before{content:"\f009";}
.icon-th:before{content:"\f00a";}
.icon-th-list:before{content:"\f00b";}
.icon-check:before{content:"\f00c";}
.icon-remove:before,.icon-close:before,.icon-times:before{content:"\f00d";}
.icon-search-plus:before{content:"\f00e";}
.icon-search-minus:before{content:"\f010";}
.icon-power-off:before{content:"\f011";}
.icon-signal:before{content:"\f012";}
.icon-gear:before,.icon-cog:before{content:"\f013";}
.icon-trash-o:before{content:"\f014";}
.icon-home:before{content:"\f015";}
.icon-file-o:before{content:"\f016";}
.icon-clock-o:before{content:"\f017";}
.icon-road:before{content:"\f018";}
.icon-download:before{content:"\f019";}
.icon-arrow-circle-o-down:before{content:"\f01a";}
.icon-arrow-circle-o-up:before{content:"\f01b";}
.icon-inbox:before{content:"\f01c";}
.icon-play-circle-o:before{content:"\f01d";}
.icon-rotate-right:before,.icon-repeat:before{content:"\f01e";}
.icon-refresh:before{content:"\f021";}
.icon-list-alt:before{content:"\f022";}
.icon-lock:before{content:"\f023";}
.icon-flag:before{content:"\f024";}
.icon-headphones:before{content:"\f025";}
.icon-volume-off:before{content:"\f026";}
.icon-volume-down:before{content:"\f027";}
.icon-volume-up:before{content:"\f028";}
.icon-qrcode:before{content:"\f029";}
.icon-barcode:before{content:"\f02a";}
.icon-tag:before{content:"\f02b";}
.icon-tags:before{content:"\f02c";}
.icon-book:before{content:"\f02d";}
.icon-bookmark:before{content:"\f02e";}
.icon-print:before{content:"\f02f";}
.icon-camera:before{content:"\f030";}
.icon-font:before{content:"\f031";}
.icon-bold:before{content:"\f032";}
.icon-italic:before{content:"\f033";}
.icon-text-height:before{content:"\f034";}
.icon-text-width:before{content:"\f035";}
.icon-align-left:before{content:"\f036";}
.icon-align-center:before{content:"\f037";}
.icon-align-right:before{content:"\f038";}
.icon-align-justify:before{content:"\f039";}
.icon-list:before{content:"\f03a";}
.icon-dedent:before,.icon-outdent:before{content:"\f03b";}
.icon-indent:before{content:"\f03c";}
.icon-video-camera:before{content:"\f03d";}
.icon-photo:before,.icon-image:before,.icon-picture-o:before{content:"\f03e";}
.icon-pencil:before{content:"\f040";}
.icon-map-marker:before{content:"\f041";}
.icon-adjust:before{content:"\f042";}
.icon-tint:before{content:"\f043";}
.icon-edit:before,.icon-pencil-square-o:before{content:"\f044";}
.icon-share-square-o:before{content:"\f045";}
.icon-check-square-o:before{content:"\f046";}
.icon-arrows:before{content:"\f047";}
.icon-step-backward:before{content:"\f048";}
.icon-fast-backward:before{content:"\f049";}
.icon-backward:before{content:"\f04a";}
.icon-play:before{content:"\f04b";}
.icon-pause:before{content:"\f04c";}
.icon-stop:before{content:"\f04d";}
.icon-forward:before{content:"\f04e";}
.icon-fast-forward:before{content:"\f050";}
.icon-step-forward:before{content:"\f051";}
.icon-eject:before{content:"\f052";}
.icon-chevron-left:before{content:"\f053";}
.icon-chevron-right:before{content:"\f054";}
.icon-plus-circle:before{content:"\f055";}
.icon-minus-circle:before{content:"\f056";}
.icon-times-circle:before{content:"\f057";}
.icon-check-circle:before{content:"\f058";}
.icon-question-circle:before{content:"\f059";}
.icon-info-circle:before{content:"\f05a";}
.icon-crosshairs:before{content:"\f05b";}
.icon-times-circle-o:before{content:"\f05c";}
.icon-check-circle-o:before{content:"\f05d";}
.icon-ban:before{content:"\f05e";}
.icon-arrow-left:before{content:"\f060";}
.icon-arrow-right:before{content:"\f061";}
.icon-arrow-up:before{content:"\f062";}
.icon-arrow-down:before{content:"\f063";}
.icon-mail-forward:before,.icon-share:before{content:"\f064";}
.icon-expand:before{content:"\f065";}
.icon-compress:before{content:"\f066";}
.icon-plus:before{content:"\f067";}
.icon-minus:before{content:"\f068";}
.icon-asterisk:before{content:"\f069";}
.icon-exclamation-circle:before{content:"\f06a";}
.icon-gift:before{content:"\f06b";}
.icon-leaf:before{content:"\f06c";}
.icon-fire:before{content:"\f06d";}
.icon-eye:before{content:"\f06e";}
.icon-eye-slash:before{content:"\f070";}
.icon-warning:before,.icon-exclamation-triangle:before{content:"\f071";}
.icon-plane:before{content:"\f072";}
.icon-calendar:before{content:"\f073";}
.icon-random:before{content:"\f074";}
.icon-comment:before{content:"\f075";}
.icon-magnet:before{content:"\f076";}
.icon-chevron-up:before{content:"\f077";}
.icon-chevron-down:before{content:"\f078";}
.icon-retweet:before{content:"\f079";}
.icon-shopping-cart:before{content:"\f07a";}
.icon-folder:before{content:"\f07b";}
.icon-folder-open:before{content:"\f07c";}
.icon-arrows-v:before{content:"\f07d";}
.icon-arrows-h:before{content:"\f07e";}
.icon-bar-chart-o:before,.icon-bar-chart:before{content:"\f080";}
.icon-twitter-square:before{content:"\f081";}
.icon-facebook-square:before{content:"\f082";}
.icon-camera-retro:before{content:"\f083";}
.icon-key:before{content:"\f084";}
.icon-gears:before,.icon-cogs:before{content:"\f085";}
.icon-comments:before{content:"\f086";}
.icon-thumbs-o-up:before{content:"\f087";}
.icon-thumbs-o-down:before{content:"\f088";}
.icon-star-half:before{content:"\f089";}
.icon-heart-o:before{content:"\f08a";}
.icon-sign-out:before{content:"\f08b";}
.icon-linkedin-square:before{content:"\f08c";}
.icon-thumb-tack:before{content:"\f08d";}
.icon-external-link:before{content:"\f08e";}
.icon-sign-in:before{content:"\f090";}
.icon-trophy:before{content:"\f091";}
.icon-github-square:before{content:"\f092";}
.icon-upload:before{content:"\f093";}
.icon-lemon-o:before{content:"\f094";}
.icon-phone:before{content:"\f095";}
.icon-square-o:before{content:"\f096";}
.icon-bookmark-o:before{content:"\f097";}
.icon-phone-square:before{content:"\f098";}
.icon-twitter:before{content:"\f099";}
.icon-facebook-f:before,.icon-facebook:before{content:"\f09a";}
.icon-github:before{content:"\f09b";}
.icon-unlock:before{content:"\f09c";}
.icon-credit-card:before{content:"\f09d";}
.icon-feed:before,.icon-rss:before{content:"\f09e";}
.icon-hdd-o:before{content:"\f0a0";}
.icon-bullhorn:before{content:"\f0a1";}
.icon-bell:before{content:"\f0f3";}
.icon-certificate:before{content:"\f0a3";}
.icon-hand-o-right:before{content:"\f0a4";}
.icon-hand-o-left:before{content:"\f0a5";}
.icon-hand-o-up:before{content:"\f0a6";}
.icon-hand-o-down:before{content:"\f0a7";}
.icon-arrow-circle-left:before{content:"\f0a8";}
.icon-arrow-circle-right:before{content:"\f0a9";}
.icon-arrow-circle-up:before{content:"\f0aa";}
.icon-arrow-circle-down:before{content:"\f0ab";}
.icon-globe:before{content:"\f0ac";}
.icon-wrench:before{content:"\f0ad";}
.icon-tasks:before{content:"\f0ae";}
.icon-filter:before{content:"\f0b0";}
.icon-briefcase:before{content:"\f0b1";}
.icon-arrows-alt:before{content:"\f0b2";}
.icon-group:before,.icon-users:before{content:"\f0c0";}
.icon-chain:before,.icon-link:before{content:"\f0c1";}
.icon-cloud:before{content:"\f0c2";}
.icon-flask:before{content:"\f0c3";}
.icon-cut:before,.icon-scissors:before{content:"\f0c4";}
.icon-copy:before,.icon-files-o:before{content:"\f0c5";}
.icon-paperclip:before{content:"\f0c6";}
.icon-save:before,.icon-floppy-o:before{content:"\f0c7";}
.icon-square:before{content:"\f0c8";}
.icon-navicon:before,.icon-reorder:before,.icon-bars:before{content:"\f0c9";}
.icon-list-ul:before{content:"\f0ca";}
.icon-list-ol:before{content:"\f0cb";}
.icon-strikethrough:before{content:"\f0cc";}
.icon-underline:before{content:"\f0cd";}
.icon-table:before{content:"\f0ce";}
.icon-magic:before{content:"\f0d0";}
.icon-truck:before{content:"\f0d1";}
.icon-pinterest:before{content:"\f0d2";}
.icon-pinterest-square:before{content:"\f0d3";}
.icon-google-plus-square:before{content:"\f0d4";}
.icon-google-plus:before{content:"\f0d5";}
.icon-money:before{content:"\f0d6";}
.icon-caret-down:before{content:"\f0d7";}
.icon-caret-up:before{content:"\f0d8";}
.icon-caret-left:before{content:"\f0d9";}
.icon-caret-right:before{content:"\f0da";}
.icon-columns:before{content:"\f0db";}
.icon-unsorted:before,.icon-sort:before{content:"\f0dc";}
.icon-sort-down:before,.icon-sort-desc:before{content:"\f0dd";}
.icon-sort-up:before,.icon-sort-asc:before{content:"\f0de";}
.icon-envelope:before{content:"\f0e0";}
.icon-linkedin:before{content:"\f0e1";}
.icon-rotate-left:before,.icon-undo:before{content:"\f0e2";}
.icon-legal:before,.icon-gavel:before{content:"\f0e3";}
.icon-dashboard:before,.icon-tachometer:before{content:"\f0e4";}
.icon-comment-o:before{content:"\f0e5";}
.icon-comments-o:before{content:"\f0e6";}
.icon-flash:before,.icon-bolt:before{content:"\f0e7";}
.icon-sitemap:before{content:"\f0e8";}
.icon-umbrella:before{content:"\f0e9";}
.icon-paste:before,.icon-clipboard:before{content:"\f0ea";}
.icon-lightbulb-o:before{content:"\f0eb";}
.icon-exchange:before{content:"\f0ec";}
.icon-cloud-download:before{content:"\f0ed";}
.icon-cloud-upload:before{content:"\f0ee";}
.icon-user-md:before{content:"\f0f0";}
.icon-stethoscope:before{content:"\f0f1";}
.icon-suitcase:before{content:"\f0f2";}
.icon-bell-o:before{content:"\f0a2";}
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.icon-signing:before,.icon-sign-language:before{content:"\f2a7";}
.icon-low-vision:before{content:"\f2a8";}
.icon-viadeo:before{content:"\f2a9";}
.icon-viadeo-square:before{content:"\f2aa";}
.icon-snapchat:before{content:"\f2ab";}
.icon-snapchat-ghost:before{content:"\f2ac";}
.icon-snapchat-square:before{content:"\f2ad";}
.icon-pied-piper:before{content:"\f2ae";}
.icon-first-order:before{content:"\f2b0";}
.icon-yoast:before{content:"\f2b1";}
.icon-themeisle:before{content:"\f2b2";}
.icon-google-plus-circle:before,.icon-google-plus-official:before{content:"\f2b3";}
.icon-fa:before,.icon-font-awesome:before{content:"\f2b4";}
.icon-top-1{color:#ff8800;}
.icon-top-2{color:#ff8800;}
.icon-top-3{color:#da24a7;}


/* ============================================================
   以下从 bootstrap.css 的“对 bootstrap 进行补充”区块迁移而来。
   这些样式并非 Bootstrap 框架本身，而是 XiunoBBS 的扩展/工具类，
   现统一收归 bootstrap-bbs.css（业务/定制层），升级 Bootstrap 框架时不会被冲掉。
   注：.hidden-sm 已并入上方已有的 @media (max-width:576px) 块，避免媒体查询外壳重复。
   ============================================================ */
/**************************************** 对 bootstrap 进行补充 ****************************************/

/* 中屏: only middle screen */
@media (min-width:576px) and (max-width:992px){
.hidden-md{display:none !important;}
}

/* 大屏+: big screen */
@media (min-width:992px){
.hidden-lg{display:none !important;}
}
.line-height-1{line-height:1 !important;}
.line-height-2{line-height:1.6 !important;}
.line-height-3{line-height:2 !important;}
.line-height-4{line-height:2.5 !important;}
.line-height-5{line-height:3 !important;}
.line-height-6{line-height:4 !important;}
.avatar-1{width:1.3rem;height:1.3rem;border-radius:1.3rem;}
.avatar-2{width:1.8rem;height:1.8rem;border-radius:1.8rem;}
.avatar-3{width:2.4rem;height:2.4rem;border-radius:2.4rem;}
.avatar-4{width:4.5rem;height:4.5rem;border-radius:4.5rem;}
.avatar-5{width:6rem;height:6rem;border-radius:6rem;}
.logo-1{height:1.3rem;}
.logo-2{height:1.8rem;}
.logo-3{height:2.4rem;}
.logo-4{height:4.5rem;}
.logo-5{height:6rem;}
/* 附件图标 */
.icon.filetype{display:inline-block;width:1rem;height:1rem;vertical-align:middle;background-repeat:no-repeat;background-size:1rem;}
.icon.filetype{--sbig:16px;width:var(--sbig);height:var(--sbig);background-size:var(--sbig);background-image:url("../img/filetype.png");}
.icon.filetype.big{--sbig:24px;}
.icon.filetype.video{background-position:0 0;}
.icon.filetype.music:before{content:"";}
.icon.filetype.music{background-position:0 calc(-1 * var(--sbig));}
.icon.filetype.exe{background-position:0 calc(-2 * var(--sbig));}
.icon.filetype.flash{background-position:0 calc(-3 * var(--sbig));}
.icon.filetype.image:before{content:"";}
.icon.filetype.image{background-position:0 calc(-4 * var(--sbig));}
.icon.filetype.office{background-position:0 calc(-5 * var(--sbig));}
.icon.filetype.pdf{background-position:0 calc(-6 * var(--sbig));}
.icon.filetype.text{background-position:0 calc(-7 * var(--sbig));}
.icon.filetype.unknown{background-position:0 calc(-8 * var(--sbig));}
.icon.filetype.zip{background-position:0 calc(-9 * var(--sbig));}
.icon.filetype.other{background-position:0 calc(-10 * var(--sbig));}
.icon.filetype.book{background-position:0 calc(-11 * var(--sbig));}
.icon.filetype.torrent{background-position:0 calc(-12 * var(--sbig));}
.icon.filetype.font{background-position:0 calc(-13 * var(--sbig));}
[class^="icon-top-"]:before{content:"\f024";}
small,.small{font-size:85%;font-weight:400;}
.text-small{font-size:12px;}
.text-grey,.text-gray{color:rgba(134,142,150,0.8) !important;}
.break-all{word-break:break-all;word-wrap:break-word;}
.center{margin-right:auto !important;margin-left:auto !important;}
.w-auto{width:auto !important;}
.flex-grow{flex-grow:1;}
.fieldset{padding:10px;margin:10px;border:1px solid #dee2e6;border-radius:2px;background:#f8f9fa;}
.fieldset > legend{width:auto;padding:0px 16px;font-size:1rem;font-weight:800;border-radius:2px;color:#f8f9fa;background:#868e96;}
select > option{background-color:#fff;}

/* ========== 主题色：默认蓝 #2563eb（覆盖 Bootstrap 5 框架默认 #0d6efd） ========== */
:root {
    --bs-primary: #2563eb;
    --bs-primary-rgb: 37, 99, 235;
    --bs-link-color: #2563eb;
    --bs-link-color-hover: #1d4ed8;
    --bs-body-bg: #fff;            /* 组件卡片背景：白 */
    --bs-body-color: #222;         /* 正文文字色 */
    --bs-link-hover-color: #6293d4;  /* 链接 hover 反馈色（柔蓝，不随主题主色变） */
}

/* 让实心主色按钮跟随主题：Bootstrap 编译版把 .btn-primary 的颜色硬编码成 #0d6efd，
   仅靠覆盖 --bs-primary 变量无法变色，需显式覆盖其 --bs-btn-* 变量 */
.btn-primary {
    --bs-btn-bg: var(--bs-primary);
    --bs-btn-border-color: var(--bs-primary);
    --bs-btn-hover-bg: var(--bs-link-color-hover);
    --bs-btn-hover-border-color: var(--bs-link-color-hover);
    --bs-btn-active-bg: var(--bs-link-color-hover);
    --bs-btn-active-border-color: var(--bs-link-color-hover);
    --bs-btn-focus-shadow-rgb: var(--bs-primary-rgb);
    --bs-btn-disabled-bg: var(--bs-primary);
    --bs-btn-disabled-border-color: var(--bs-primary);
}