/*! Bootstrap v5.1.3 | MIT License | https://getbootstrap.com/ */
/* 简化版Bootstrap核心样式，只包含实际使用的部分 */
:root {
    --bs-blue: #0d6efd;
    --bs-indigo: #6610f2;
    --bs-purple: #6f42c1;
    --bs-pink: #d63384;
    --bs-red: #dc3545;
    --bs-orange: #fd7e14;
    --bs-yellow: #ffc107;
    --bs-green: #198754;
    --bs-teal: #20c997;
    --bs-cyan: #0dcaf0;
    --bs-white: #fff;
    --bs-gray: #6c757d;
    --bs-gray-dark: #343a40;
    --bs-gray-100: #f8f9fa;
    --bs-gray-200: #e9ecef;
    --bs-gray-300: #dee2e6;
    --bs-gray-400: #ced4da;
    --bs-gray-500: #adb5bd;
    --bs-gray-600: #6c757d;
    --bs-gray-700: #495057;
    --bs-gray-800: #343a40;
    --bs-gray-900: #212529;
    --bs-primary: #0d6efd;
    --bs-secondary: #6c757d;
    --bs-success: #198754;
    --bs-info: #0dcaf0;
    --bs-warning: #ffc107;
    --bs-danger: #dc3545;
    --bs-light: #f8f9fa;
    --bs-dark: #212529;
    --bs-primary-rgb: 13, 110, 253;
    --bs-secondary-rgb: 108, 117, 125;
    --bs-success-rgb: 25, 135, 84;
    --bs-info-rgb: 13, 202, 240;
    --bs-warning-rgb: 255, 193, 7;
    --bs-danger-rgb: 220, 53, 69;
    --bs-light-rgb: 248, 249, 250;
    --bs-dark-rgb: 33, 37, 41;
    --bs-white-rgb: 255, 255, 255;
    --bs-black-rgb: 0, 0, 0;
    --bs-body-color-rgb: 33, 37, 41;
    --bs-body-bg-rgb: 255, 255, 255;
    --bs-font-sans-serif: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
    --bs-font-monospace: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    --bs-gradient: linear-gradient(180deg, rgba(255, 255, 255, 0.15), rgba(255, 255, 255, 0));
    --bs-body-font-family: var(--bs-font-sans-serif);
    --bs-body-font-size: 1rem;
    --bs-body-font-weight: 400;
    --bs-body-line-height: 1.5;
    --bs-body-color: #212529;
    --bs-body-bg: #fff;
}

*, ::after, ::before {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--bs-body-font-family);
    font-size: var(--bs-body-font-size);
    font-weight: var(--bs-body-font-weight);
    line-height: var(--bs-body-line-height);
    color: var(--bs-body-color);
    text-align: var(--bs-body-text-align);
    background-color: var(--bs-body-bg);
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

.container, .container-fluid, .container-lg, .container-md, .container-sm, .container-xl, .container-xxl {
    width: 100%;
    padding-right: var(--bs-gutter-x, 0.75rem);
    padding-left: var(--bs-gutter-x, 0.75rem);
    margin-right: auto;
    margin-left: auto;
}

@media (min-width: 576px) {
    .container, .container-sm {
        max-width: 540px;
    }
}

@media (min-width: 768px) {
    .container, .container-md, .container-sm {
        max-width: 720px;
    }
}

@media (min-width: 992px) {
    .container, .container-lg, .container-md, .container-sm {
        max-width: 960px;
    }
}

@media (min-width: 1200px) {
    .container, .container-lg, .container-md, .container-sm, .container-xl {
        max-width: 1140px;
    }
}

@media (min-width: 1400px) {
    .container, .container-lg, .container-md, .container-sm, .container-xl, .container-xxl {
        max-width: 1320px;
    }
}

.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-12 {
    flex: 0 0 auto;
    width: 100%;
}

.col-md-6 {
    flex: 0 0 auto;
    width: 50%;
}

.col-lg-4 {
    flex: 0 0 auto;
    width: 33.33333333%;
}

.col-lg-6 {
    flex: 0 0 auto;
    width: 50%;
}

@media (min-width: 768px) {
    .col-md-6 {
        flex: 0 0 auto;
        width: 50%;
    }
    
    .col-md-12 {
        flex: 0 0 auto;
        width: 100%;
    }
}

@media (min-width: 992px) {
    .col-lg-4 {
        flex: 0 0 auto;
        width: 33.33333333%;
    }
    
    .col-lg-6 {
        flex: 0 0 auto;
        width: 50%;
    }
}

.fixed-top {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    z-index: 1030;
}

.navbar {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

.navbar-brand {
    padding-top: 0.3125rem;
    padding-bottom: 0.3125rem;
    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-collapse {
    flex-basis: 100%;
    flex-grow: 1;
    align-items: center;
}

.navbar-toggler {
    padding: 0.25rem 0.75rem;
    font-size: 1.25rem;
    line-height: 1;
    background-color: transparent;
    border: 1px solid transparent;
    border-radius: 0.375rem;
    transition: box-shadow 0.15s ease-in-out;
}

.navbar-expand-lg .navbar-nav {
    flex-direction: row;
}

.navbar-expand-lg .navbar-nav .nav-link {
    padding-right: 0.5rem;
    padding-left: 0.5rem;
}

.navbar-expand-lg .navbar-collapse {
    display: flex !important;
    flex-basis: auto;
}

.navbar-expand-lg .navbar-toggler {
    display: none;
}

.ms-auto {
    margin-left: auto !important;
}

.mb-3 {
    margin-bottom: 1rem !important;
}

.mb-4 {
    margin-bottom: 1.5rem !important;
}

.text-muted {
    --bs-text-opacity: 1;
    color: #6c757d !important;
}

.btn {
    display: inline-block;
    font-weight: 400;
    line-height: 1.5;
    color: #212529;
    text-align: center;
    text-decoration: none;
    vertical-align: middle;
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    user-select: none;
    background-color: transparent;
    border: 1px solid transparent;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    border-radius: 0.375rem;
    transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.btn:hover {
    color: #212529;
}

.btn-lg, .btn-group-lg > .btn {
    padding: 0.5rem 1rem;
    font-size: 1.25rem;
    border-radius: 0.5rem;
}

.d-flex {
    display: flex !important;
}

.justify-content-center {
    justify-content: center !important;
}

.align-items-center {
    align-items: center !important;
}

.collapse:not(.show) {
    display: none;
}

.navbar-toggler-icon {
    display: inline-block;
    width: 1.5em;
    height: 1.5em;
    vertical-align: middle;
    background-repeat: no-repeat;
    background-position: center;
    background-size: 100%;
}