:root{--bg: #f4f7fb;--panel: #ffffff;--text: #1d2838;--muted: #728197;--line: #e4ebf4;--primary: #2f8cff;--primary-dark: #176ee6;--sidebar: #182235;--shadow: 0 18px 50px rgba(31, 48, 78, .1);font-family:Noto Sans SC,Microsoft YaHei,PingFang SC,Segoe UI,sans-serif;color:var(--text)}*{box-sizing:border-box}html,body,#app{min-height:100%;margin:0}body{background:#f7f8fa}a{color:inherit}.eyebrow{margin:0 0 8px;color:var(--primary);font-size:12px;font-weight:700;letter-spacing:0}.site-shell{width:min(1560px,calc(100% - 48px));margin:26px auto}.public-page{width:min(1564px,calc(100% - 56px));margin:0 auto;padding:12px 0 36px}.course-board{min-height:680px;padding:46px 20px 20px;border:1px solid #dfe6ef;border-radius:3px;background:#fff;box-shadow:0 3px 14px #192c4c1a}.board-title{margin:0 0 22px;padding:0 22px 24px;border-bottom:1px solid #e6ecf4}.board-title h1{margin:0;color:#2f8cff;font-size:28px;line-height:1;font-weight:500}.topbar{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:16px}.topbar h1{margin:0;color:#1682ff;font-size:30px;font-weight:650}.course-panel,.admin-card,.login-card{background:#fffffff2;border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow)}.search-console,.catalog-panel{border:0;border-radius:0;background:transparent;box-shadow:none;-webkit-backdrop-filter:none;backdrop-filter:none}.search-console{position:relative;z-index:30;overflow:visible;padding:0 20px 22px}.catalog-panel{position:relative;z-index:1;padding:0 20px}.result-pill{display:inline-flex;align-items:center;height:34px;padding:0 13px;border:1px solid #dbe7f6;border-radius:8px;background:#f7fbff;color:#37536f;font-size:13px}.course-panel{padding:34px 40px 28px}.filter-section{border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:24px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:22px}.section-heading h2{margin:0;font-size:18px}.section-heading span{color:var(--muted);font-size:13px}.filter-form{display:grid;gap:22px}.primary-search{display:grid;grid-template-columns:290px 290px 290px minmax(360px,1fr);align-items:center;gap:16px}.field-control{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:12px;min-width:0}.field-control>span{color:#303d4f;font-size:14px;font-weight:400;line-height:20px;white-space:nowrap}.field-control input,.field-control select,.custom-select__trigger,.jump-control input{width:100%;min-height:40px;border:1px solid #d8dde7;border-radius:3px;background:#fff;color:#1f334d;font:inherit;outline:none;transition:border-color .16s ease,box-shadow .16s ease,background .16s ease}.field-control input,.field-control select{padding:0 12px}.field-control input:focus,.field-control select:focus,.custom-select.open .custom-select__trigger,.jump-control input:focus{border-color:#3b97f5;box-shadow:0 0 0 2px #3b97f51f}.field-control input::placeholder{color:#a6b2c1}.custom-select{position:relative;z-index:40}.custom-select__trigger{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 12px;cursor:pointer;text-align:left}.custom-select__trigger span:first-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.custom-select__arrow{position:relative;flex:0 0 16px;width:16px;height:16px;color:#7890aa;transition:transform .16s ease}.custom-select__arrow:before{content:"";position:absolute;top:4px;left:4px;width:7px;height:7px;border-right:1.5px solid #8795a8;border-bottom:1.5px solid #8795a8;transform:rotate(45deg)}.custom-select.open .custom-select__arrow{transform:rotate(180deg)}.custom-select__menu{position:absolute;z-index:1000;top:calc(100% + 8px);left:0;width:100%;max-height:360px;overflow-y:auto;padding:6px;border:1px solid rgba(202,218,236,.95);border-radius:4px;background:#fffffffa;box-shadow:0 18px 40px #1e395b29,0 2px 8px #1e395b14}.custom-select__menu--up{top:auto;bottom:calc(100% + 8px);max-height:220px}.custom-select__menu::-webkit-scrollbar{width:8px}.custom-select__menu::-webkit-scrollbar-thumb{border:2px solid #fff;border-radius:999px;background:#c8d8ea}.custom-select__option{display:flex;align-items:center;width:100%;min-height:34px;padding:0 10px;border:0;border-radius:7px;background:transparent;color:#21344d;font:inherit;cursor:pointer;text-align:left}.custom-select__option:hover{background:#edf6ff;color:#176ee6}.custom-select__option.selected{background:#2f8cff;color:#fff;font-weight:750}.filter-actions{display:flex;gap:12px;padding-left:18px}.price-range{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:center;gap:20px;width:100%}.primary-action,.secondary-action{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:40px;min-width:70px;padding:0 18px;border-radius:4px;font:inherit;font-weight:700;cursor:pointer;transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}.primary-action{border:1px solid #3696f7;background:#2f8cff;color:#fff;box-shadow:none}.secondary-action{border:1px solid #d8e2ee;background:#fff;color:#485b70}.primary-action:hover,.secondary-action:hover{transform:translateY(-1px)}.primary-action:hover{background:#176ee6;box-shadow:none}.secondary-action:hover{border-color:#b8c9dd}.table-section{min-height:420px}.course-table{width:100%;min-width:960px;border-collapse:separate;border-spacing:0;color:#26384f;table-layout:fixed}.course-table th,.course-table td{padding:13px 16px;border-right:1px solid #e6ebf3;border-bottom:1px solid #e6ebf3;text-align:center;vertical-align:middle}.course-table th{height:50px;background:#fff;color:#5d6878;font-weight:700}.course-table th:first-child{border-top-left-radius:8px}.course-table th:last-child{border-top-right-radius:8px}.course-table td:nth-child(3){text-align:center}.course-table td:nth-child(4){text-align:center}.course-table tbody tr{background:#fff;transition:background .16s ease,transform .16s ease}.course-table tbody tr:nth-child(2n){background:#fbfdff}.course-table tbody tr:hover{background:#f9fbfe}.public-table-wrap{position:relative;overflow-x:auto;border:1px solid #e6ebf3;border-right:0;border-bottom:0;border-radius:0;background:#fff}.public-table-wrap.loading,.mobile-course-list.loading{min-height:180px}.loading-mask{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;border-radius:inherit;background:#ffffffb8;color:#315c8c;font-weight:700;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.empty-state{display:grid;min-height:150px;place-items:center;color:#8a9aab;font-weight:650}.admin-table{--el-table-border-color: var(--line);--el-table-header-bg-color: #f9fbfe;--el-table-header-text-color: #5a687b}.public-table{overflow:hidden;border:0;border-radius:0}.mobile-course-list{position:relative;display:none}.mobile-course-card{padding:14px;border:1px solid #e0e8f3;border-radius:8px;background:linear-gradient(180deg,#fff,#f8fbff)}.mobile-course-card+.mobile-course-card{margin-top:10px}.mobile-course-card__head,.mobile-course-card__meta{display:flex;align-items:center;justify-content:space-between;gap:10px}.mobile-course-card h3{margin:12px 0;color:#1d314b;font-size:15px;line-height:1.55;font-weight:700}.code-badge{display:inline-flex;align-items:center;justify-content:center;min-width:auto;height:auto;padding:0 10px;border:0;border-radius:0;background:transparent;color:#344156;font-weight:400}.type-pill{display:inline-flex;align-items:center;justify-content:center;max-width:136px;min-height:28px;padding:5px 10px;border:0;border-radius:0;background:transparent;color:#344156;font-size:14px;font-weight:400}.course-name-cell{display:flex;align-items:center;justify-content:center;gap:11px;color:#26384f;line-height:1.55}.course-name-cell .el-icon{flex:0 0 auto;color:#11a897}.course-dot{display:none}.course-link{display:inline-flex;align-items:center;gap:5px;color:#00e;font-weight:400;text-decoration:underline}.course-link:hover{color:#0f67d7;text-decoration:underline}.price-token{display:inline-flex;align-items:center;justify-content:center;min-width:auto;height:auto;padding:0;border-radius:0;background:transparent;color:#344156;font-weight:400}.price-token.free{background:transparent;color:#344156}.muted-text{color:#8a9aab}.price-text{color:#7a3f26;font-weight:600}.pagination-bar{display:flex;align-items:center;justify-content:flex-end;gap:18px;padding-top:22px;color:#546277;font-size:14px}.public-pagination{justify-content:flex-end}.page-size-dropdown{width:100px}.page-size-dropdown .custom-select__trigger{min-height:30px}.pager-controls{display:flex;align-items:center;gap:8px}.pager-controls button{min-width:30px;height:30px;border:1px solid transparent;border-radius:4px;background:#f3f5f8;color:#2a3748;font:inherit;font-weight:700;cursor:pointer}.pager-controls button.active{background:#2f8cff;color:#fff}.pager-controls button:disabled{cursor:not-allowed;opacity:.52}.pager-controls button.ellipsis{background:transparent;color:#4b5d72;opacity:1}.jump-control{display:inline-flex;align-items:center;gap:8px}.jump-control input{width:58px;min-height:30px;padding:0 8px;text-align:center}.select-col{width:54px}.fake-checkbox{display:inline-block;width:14px;height:14px;border:1px solid #d4dbe6;border-radius:2px;background:#fff;vertical-align:middle}.total-text{color:#344156}.login-page{min-height:100vh;display:grid;grid-template-columns:minmax(0,1fr) 440px;align-items:center;gap:46px;width:min(1120px,calc(100% - 48px));margin:0 auto}.login-page--simple{grid-template-columns:minmax(320px,440px);justify-content:center}.login-visual{color:#10243f}.login-visual h1{margin:0 0 18px;font-size:54px;line-height:1.08}.login-visual>p:last-of-type{width:min(620px,100%);margin:0;color:#53647a;font-size:18px;line-height:1.8}.login-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:34px}.login-stats div{padding:18px;border:1px solid var(--line);border-radius:8px;background:#ffffffb8}.login-stats strong,.login-stats span{display:block}.login-stats strong{margin-bottom:6px;font-size:18px}.login-stats span{color:var(--muted);font-size:13px}.login-card{padding:34px}.login-card__head{margin-bottom:24px}.login-card__head h2{margin:0 0 8px;font-size:26px}.login-card__head span{color:var(--muted);font-size:13px}.login-button{width:100%;margin-top:8px}.back-home{margin-top:18px}.admin-shell{min-height:100vh;display:block;background:#f7f8fa}.admin-board{width:min(1564px,calc(100% - 56px));min-height:680px;margin:12px auto 36px;border:1px solid #dfe6ef;border-radius:3px;background:#fff;box-shadow:0 3px 14px #192c4c14}.admin-header{height:auto;min-height:88px;display:flex;align-items:center;justify-content:space-between;padding:0 22px;border-bottom:1px solid #e6ecf4;background:transparent}.admin-header h1{margin:0;color:#2f8cff;font-size:28px;font-weight:500}.header-actions{display:flex;align-items:center;gap:12px}.user-button{height:34px;display:inline-flex;align-items:center;gap:8px;padding:0 12px;border:1px solid var(--line);border-radius:4px;background:#fff;color:var(--text);cursor:pointer}.admin-main{padding:0}.manage-view{padding:20px}.manage-toolbar{display:flex;align-items:center;justify-content:flex-end;gap:16px;margin:0 0 12px;padding:0}.admin-card{padding:0 0 10px;border:0;border-radius:0;box-shadow:none;background:transparent}.admin-filter{margin-bottom:22px;padding:48px 0 22px;border-bottom:0}.admin-filter-grid{display:grid;grid-template-columns:minmax(180px,1fr) minmax(180px,1fr) minmax(180px,1fr) minmax(220px,1.2fr) auto;align-items:end;gap:14px 22px}.admin-filter-field{min-width:0}.admin-filter-field--actions{align-self:start}.admin-filter .el-form-item{margin-bottom:0}.admin-filter .el-form-item__label{color:#303d4f;font-weight:400}.admin-filter .el-input__wrapper,.admin-filter .el-select__wrapper,.admin-filter .el-input-number .el-input__wrapper{min-height:40px;border-radius:3px;box-shadow:0 0 0 1px #d8dde7 inset}.admin-filter .el-input-number{width:100%}.admin-filter-actions{display:flex;align-items:center;gap:10px;min-height:40px;white-space:nowrap}.admin-filter-actions--stacked{position:relative;flex-direction:row;align-items:flex-end;min-width:268px;min-height:40px}.admin-filter-actions__bottom{display:flex;align-items:center;justify-content:flex-end;gap:10px}.admin-create-button{position:absolute;right:0;bottom:calc(100% + 20px)}.admin-filter-actions .el-button{margin-left:0}.admin-card .price-range{gap:20px}.admin-table .el-table__cell{padding:13px 0}.admin-table-wrap{width:100%}.admin-table{border-top:1px solid #e6ebf3;border-left:1px solid #e6ebf3;--el-table-border-color: #e6ebf3;--el-table-header-bg-color: #fff;--el-table-header-text-color: #5d6878;--el-table-row-hover-bg-color: #f9fbfe;color:#344156}.admin-table .el-table__header th{height:50px;font-weight:700}.admin-table .el-table__body td,.admin-table .el-table__header th{border-color:#e6ebf3}.admin-table .el-tag{border:0;background:transparent;color:#344156;font-size:14px}.admin-table .el-button.is-link{font-weight:400}.admin-card>.pagination-bar{padding-top:22px}.manage-toolbar .el-button,.admin-filter-actions .el-button{border-radius:4px}.admin-filter-actions .el-button{height:40px;min-height:40px;padding:0 18px;line-height:40px}@media(max-width:980px){.public-page{width:min(100% - 32px,920px)}.primary-search{grid-template-columns:1fr 1fr}.field-control--price,.filter-actions{grid-column:1 / -1}.login-page{grid-template-columns:1fr;width:min(440px,calc(100% - 32px));padding:40px 0}.login-visual h1{font-size:40px}.admin-board{width:min(100% - 32px,920px)}.admin-header{min-height:60px;padding:10px 16px}.admin-filter-actions{justify-content:flex-start;padding-left:76px}.admin-filter-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.admin-filter-field--price,.admin-filter-field--actions{grid-column:auto}.admin-filter-actions--stacked{align-items:flex-start;flex-direction:column;gap:10px;min-height:auto}.admin-filter-actions__bottom{justify-content:flex-start}.admin-create-button{position:static}}@media(max-width:720px){.public-page{width:calc(100% - 24px);padding:12px 0 28px}.course-board{padding:24px 14px 18px}.board-title{padding:0 4px 18px}.board-title h1{font-size:24px}.search-console,.catalog-panel{padding-right:0;padding-left:0}.primary-search{grid-template-columns:1fr}.field-control{grid-template-columns:74px minmax(0,1fr)}.public-table-wrap{display:none}.mobile-course-list{display:block}.admin-table{width:1080px;min-width:1080px}.admin-table-wrap{overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch;border-right:1px solid #e6ebf3}.admin-table-wrap .el-table__inner-wrapper,.admin-table-wrap .el-scrollbar,.admin-table-wrap .el-scrollbar__wrap{overflow:visible!important}.admin-table-wrap .el-table__fixed-right,.admin-table-wrap .el-table__fixed,.admin-table-wrap .el-table__fixed-right-patch{display:none!important}.price-range{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.price-range>span{display:none}.public-pagination{align-items:stretch;flex-direction:column;gap:12px}.pager-controls{width:100%;overflow-x:auto;justify-content:flex-start}.filter-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}.filter-actions button{width:100%;margin-left:0}.site-shell{width:calc(100% - 24px);margin:12px auto}.topbar,.section-heading,.pagination-bar,.manage-toolbar,.admin-header{align-items:flex-start;flex-direction:column}.course-panel,.login-card{padding:18px}.manage-view{padding:0 14px 18px}.manage-toolbar{padding:0}.admin-board{width:calc(100% - 24px)}.filter-actions{padding-left:0}.login-stats{grid-template-columns:1fr}.login-page{min-height:100vh;width:calc(100% - 32px);padding:24px 0}.login-card__head h2{font-size:24px}.header-actions{width:100%;flex-wrap:wrap}.admin-filter{label-width:0}.admin-filter .el-form-item{display:block}.admin-filter .el-form-item__label{width:auto!important;margin-bottom:6px;text-align:left}.admin-filter .el-form-item__content{margin-left:0!important}.admin-filter-actions{padding-left:0}.admin-filter-grid{grid-template-columns:1fr}.admin-filter-actions--stacked{width:100%}.el-dialog{width:calc(100% - 28px)!important}}@media(max-width:420px){.public-page{width:calc(100% - 16px);padding-top:8px}.course-board{padding:20px 10px 14px}.field-control input,.field-control select{min-height:38px}.mobile-course-card__head,.mobile-course-card__meta{align-items:flex-start;flex-direction:column}.price-token{min-width:48px}}