/* Bootstrap 5.3.0 - 简化版本 */
/* 重置和基础样式 */
*,::after,::before{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue","Noto Sans","Liberation Sans",Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-size:1rem;font-weight:400;line-height:1.5;color:#212529;background-color:#fff;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}

/* 容器 */
.container{--bs-gutter-x:1.5rem;--bs-gutter-y:0;width:100%;padding-right:calc(var(--bs-gutter-x) * .5);padding-left:calc(var(--bs-gutter-x) * .5);margin-right:auto;margin-left:auto}
@media (min-width:576px){.container{max-width:540px}}
@media (min-width:768px){.container{max-width:720px}}
@media (min-width:992px){.container{max-width:960px}}
@media (min-width:1200px){.container{max-width:1140px}}
@media (min-width:1400px){.container{max-width:1320px}}

/* 网格系统 */
.row{--bs-gutter-x:1.5rem;--bs-gutter-y:0;display:flex;flex-wrap:wrap;margin-top:calc(-1 * var(--bs-gutter-y));margin-right:calc(-.5 * var(--bs-gutter-x));margin-left:calc(-.5 * var(--bs-gutter-x))}
.row>*{flex-shrink:0;width:100%;max-width:100%;padding-right:calc(var(--bs-gutter-x) * .5);padding-left:calc(var(--bs-gutter-x) * .5);margin-top:var(--bs-gutter-y)}
.col-md-4{flex:0 0 auto;width:33.33333333%}
.col-md-5{flex:0 0 auto;width:41.66666667%}
.col-md-6{flex:0 0 auto;width:50%}
.col-md-7{flex:0 0 auto;width:58.33333333%}
.col-lg-5{flex:0 0 auto;width:41.66666667%}
.col-lg-7{flex:0 0 auto;width:58.33333333%}
.col-lg-12{flex:0 0 auto;width:100%}
.col-12{flex:0 0 auto;width:100%}

/* 导航栏 */
.navbar{position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;padding-top:.5rem;padding-bottom:.5rem}
.navbar-brand{padding-top:.3125rem;padding-bottom:.3125rem;margin-right:1rem;font-size:1.25rem;text-decoration:none;white-space:nowrap}
.navbar-nav{display:flex;flex-direction:column;padding-left:0;margin-bottom:0;list-style:none}
.navbar-nav .nav-link{padding-right:0;padding-left:0}
.navbar-expand-lg .navbar-nav{flex-direction:row}
.navbar-expand-lg .navbar-nav .nav-link{padding-right:.5rem;padding-left:.5rem}
.navbar-toggler{padding:.25rem .75rem;font-size:1.25rem;line-height:1;background-color:transparent;border:1px solid transparent;border-radius:.375rem}
.navbar-toggler-icon{display:inline-block;width:1.5em;height:1.5em;vertical-align:middle;background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2833, 37, 41, 0.75%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");background-repeat:no-repeat;background-position:center;background-size:100%}
.fixed-top{position:fixed;top:0;right:0;left:0;z-index:1030}

/* 按钮 */
.btn{display:inline-block;padding:.375rem .75rem;margin-bottom:0;font-size:1rem;font-weight:400;line-height:1.5;color:#212529;text-align:center;text-decoration:none;vertical-align:middle;cursor:pointer;user-select:none;border:1px solid transparent;border-radius:.375rem;transition:color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out,box-shadow .15s ease-in-out}
.btn-primary{color:#fff;background-color:#0d6efd;border-color:#0d6efd}
.btn-primary:hover{color:#fff;background-color:#0b5ed7;border-color:#0a58ca}
.btn-outline-primary{color:#0d6efd;border-color:#0d6efd}
.btn-outline-primary:hover{color:#fff;background-color:#0d6efd;border-color:#0d6efd}
.btn-lg{padding:.5rem 1rem;font-size:1.25rem;border-radius:.5rem}
.btn-outline-light{color:#f8f9fa;border-color:#f8f9fa}
.btn-outline-light:hover{color:#000;background-color:#f8f9fa;border-color:#f8f9fa}
.btn-secondary{color:#fff;background-color:#6c757d;border-color:#6c757d}
.btn-outline-secondary{color:#6c757d;border-color:#6c757d}
.btn-sm{padding:.25rem .5rem;font-size:.875rem;border-radius:.25rem}
.btn-close{box-sizing:content-box;width:1em;height:1em;padding:.25em .25em;color:#000;background:transparent url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23000'%3e%3cpath d='m.235.676l-.678-.678A1 1 0 0 1 1.023-.002l15.554 15.555a1 1 0 0 1-1.415 1.414L-.432 2.111A1 1 0 0 1 .235.676Z'/%3e%3c/svg%3e") center/1em auto no-repeat;border:0;border-radius:.375rem;opacity:.5}

/* 卡片 */
.card{position:relative;display:flex;flex-direction:column;min-width:0;word-wrap:break-word;background-color:#fff;background-clip:border-box;border:1px solid rgba(0,0,0,.125);border-radius:.375rem}
.card-body{flex:1 1 auto;padding:1rem 1rem}
.card-title{margin-bottom:.5rem}
.card-text:last-child{margin-bottom:0}
.card-img-top{width:100%;border-top-left-radius:calc(.375rem - 1px);border-top-right-radius:calc(.375rem - 1px)}
.h-100{height:100%!important}

/* 模态框 */
.modal{position:fixed;top:0;left:0;z-index:1055;display:none;width:100%;height:100%;overflow-x:hidden;overflow-y:auto;outline:0}
.modal-dialog{position:relative;width:auto;margin:.5rem;pointer-events:none}
.modal-content{position:relative;display:flex;flex-direction:column;width:100%;pointer-events:auto;background-color:#fff;background-clip:padding-box;border:1px solid rgba(0,0,0,.2);border-radius:.5rem;outline:0}
.modal-header{display:flex;flex-shrink:0;align-items:center;justify-content:space-between;padding:1rem 1rem;border-bottom:1px solid #e9ecef;border-top-left-radius:calc(.5rem - 1px);border-top-right-radius:calc(.5rem - 1px)}
.modal-body{position:relative;flex:1 1 auto;padding:1rem}
.modal-footer{display:flex;flex-wrap:wrap;flex-shrink:0;align-items:center;justify-content:flex-end;padding:.75rem;border-top:1px solid #e9ecef;border-bottom-right-radius:calc(.5rem - 1px);border-bottom-left-radius:calc(.5rem - 1px)}
.modal-title{margin-bottom:0;line-height:1.5}
.modal-dialog-centered{display:flex;align-items:center;min-height:calc(100% - 1rem)}
.modal-lg{max-width:800px}

/* 折叠 */
.collapse:not(.show){display:none}
.collapse.show{display:block}

/* 导航 */
.nav{display:flex;flex-wrap:wrap;padding-left:0;margin-bottom:0;list-style:none}
.nav-link{display:block;padding:.5rem 1rem;color:#0d6efd;text-decoration:none;transition:color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out}
.nav-link:hover{color:#0a58ca}
.nav-item{margin-bottom:0}
.active{color:#0a58ca!important}

/* 实用工具 */
.d-flex{display:flex!important}
.d-inline-block{display:inline-block!important}
.d-inline-flex{display:inline-flex!important}
.d-grid{display:grid!important}
.d-none{display:none!important}
.text-center{text-align:center!important}
.text-decoration-none{text-decoration:none!important}
.justify-content-center{justify-content:center!important}
.justify-content-md-start{justify-content:flex-start!important}
.justify-content-space-between{justify-content:space-between!important}
.align-items-center{align-items:center!important}
.align-text-top{vertical-align:text-top!important}
.me-2{margin-right:.5rem!important}
.me-md-2{margin-right:.5rem!important}
.me-1{margin-right:.25rem!important}
.me-3{margin-right:1rem!important}
.ms-auto{margin-left:auto!important}
.ms-2{margin-left:.5rem!important}
.mb-0{margin-bottom:0!important}
.mb-3{margin-bottom:1rem!important}
.mb-4{margin-bottom:1.5rem!important}
.mb-5{margin-bottom:3rem!important}
.mt-3{margin-top:1rem!important}
.mt-4{margin-top:1.5rem!important}
.p-4{padding:1.5rem!important}
.py-3{padding-top:1rem!important;padding-bottom:1rem!important}
.py-4{padding-top:1.5rem!important;padding-bottom:1.5rem!important}
.py-5{padding-top:3rem!important;padding-bottom:3rem!important}
.px-4{padding-left:1.5rem!important;padding-right:1.5rem!important}
.px-2{padding-left:.5rem!important;padding-right:.5rem!important}
.px-1{padding-left:.25rem!important;padding-right:.25rem!important}
.float-end{float:right!important}
.img-fluid{max-width:100%;height:auto}
.lead{font-size:1.25rem;font-weight:300}
.display-4{font-size:calc(1.475rem + 2.7vw);font-weight:500;line-height:1.2}
.fw-bold{font-weight:700!important}
.bg-light{background-color:#f8f9fa!important}

/* 表单 */
.form-control{display:block;width:100%;padding:.375rem .75rem;font-size:1rem;font-weight:400;line-height:1.5;color:#212529;background-color:#fff;background-image:none;border:1px solid #ced4da;border-radius:.375rem;transition:border-color .15s ease-in-out,box-shadow .15s ease-in-out}
.form-label{margin-bottom:.5rem}

/* 输入组 */
.input-group{position:relative;display:flex;flex-wrap:wrap;align-items:stretch;width:100%}
.input-group>.form-control{position:relative;flex:1 1 auto;width:1%;min-width:0}

/* 徽章 */
.badge{display:inline-block;padding:.35em .65em;font-size:.75em;font-weight:700;line-height:1;color:#fff;text-align:center;white-space:nowrap;vertical-align:baseline;border-radius:.375rem}
.bg-primary{background-color:#0d6efd!important}

/* 下拉菜单 */
.dropdown{position:relative}
.dropdown-toggle{white-space:nowrap}
.dropdown-toggle::after{display:inline-block;margin-left:.255em;vertical-align:.255em;content:"";border-top:.3em solid;border-right:.3em solid transparent;border-bottom:0;border-left:.3em solid transparent}
.dropdown-menu{position:absolute;top:100%;left:0;z-index:1000;display:none;min-width:10rem;padding:.5rem 0;margin:0;font-size:1rem;color:#212529;text-align:left;list-style:none;background-color:#fff;background-clip:padding-box;border:1px solid rgba(0,0,0,.15);border-radius:.375rem}
.dropdown-item{display:block;width:100%;padding:.25rem 1rem;clear:both;font-weight:400;color:#212529;text-align:inherit;text-decoration:none;white-space:nowrap;background-color:transparent;border:0}
.dropdown-item:hover{color:#1e2125;background-color:#e9ecef}
.dropdown-item.active{color:#fff;text-decoration:none;background-color:#0d6efd}
.dropdown-divider{height:0;margin:.5rem 0;overflow:hidden;border-top:1px solid rgba(0,0,0,.15)}

/* 媒体查询 */
@media (min-width:768px){
  .col-md-4{flex:0 0 auto;width:33.33333333%}
  .col-md-5{flex:0 0 auto;width:41.66666667%}
  .col-md-6{flex:0 0 auto;width:50%}
  .col-md-7{flex:0 0 auto;width:58.33333333%}
  .d-md-flex{display:flex!important}
  .justify-content-md-start{justify-content:flex-start!important}
  .me-md-2{margin-right:.5rem!important}
}

@media (min-width:992px){
  .col-lg-5{flex:0 0 auto;width:41.66666667%}
  .col-lg-7{flex:0 0 auto;width:58.33333333%}
  .col-lg-12{flex:0 0 auto;width:100%}
  .navbar-expand-lg{flex-wrap:nowrap;justify-content:flex-start}
  .navbar-expand-lg .navbar-nav{flex-direction:row}
  .navbar-expand-lg .navbar-nav .nav-link{padding-right:.5rem;padding-left:.5rem}
  .navbar-expand-lg .navbar-toggler{display:none}
  .navbar-expand-lg .navbar-collapse{display:flex!important;flex-basis:auto}
}

/* 间距工具 */
.g-4{--bs-gutter-x:1.5rem;--bs-gutter-y:1.5rem}
.g-0{--bs-gutter-x:0;--bs-gutter-y:0}
.gap-2{gap:.5rem!important}