:root{--ink:#23332b;--green:#193c32;--leaf:#2d7155;--pale:#eef3ef;--white:#fff;--line:#dce5df;--muted:#69776e;--accent:#d5e8aa;--danger:#a73435;font-family:"Microsoft YaHei UI","PingFang SC",system-ui,sans-serif;color:var(--ink);background:#f4f7f4;font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.55}a{color:var(--leaf);text-decoration:none}a:hover{text-decoration:underline}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #8db18d;outline-offset:3px}input,select{border:1px solid #ccd8ce;background:var(--white);border-radius:8px;color:var(--ink);padding:12px 13px;max-width:100%;min-width:0}input{width:100%}input:focus{border-color:var(--leaf)}label{display:block;font-size:13px;font-weight:600;margin:21px 0 9px}h1,h2,h3,p{margin-top:0}h1{font-size:30px;letter-spacing:-1px}h2{font-size:18px;margin-bottom:8px}p{line-height:1.8}small,.small{font-size:12px}.muted{color:var(--muted)}.eyebrow{display:block;font-size:11px;letter-spacing:1.5px;font-weight:600;color:var(--leaf);margin-bottom:13px}.brand{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:700;line-height:1.25}.brand:hover{text-decoration:none}.brand small{display:block;font-size:11px;font-weight:400;letter-spacing:2px;margin-top:5px}.brand-icon{width:38px;height:38px;background:var(--green);color:white;border-radius:12px;display:grid;place-items:center;font-family:Georgia,serif;font-size:23px}.primary,.secondary{display:inline-flex;align-items:center;justify-content:center;gap:12px;border-radius:8px;padding:11px 18px;border:1px solid transparent;font-size:13px;font-weight:600;white-space:nowrap;text-decoration:none!important;min-height:42px}.primary{background:var(--green);color:white}.primary:hover{background:#2d5945}.secondary{background:white;color:var(--ink);border-color:var(--line)}.secondary:hover{background:var(--pale)}.full{width:100%;justify-content:space-between}.form-error{color:var(--danger);font-size:13px;margin:12px 0;min-height:18px}.login-page{min-height:100svh;display:grid;place-items:center;padding:48px 5vw;background:#e9efea}.login-shell{width:min(1120px,100%);min-height:720px;display:grid;grid-template-columns:1.1fr 1fr;background:white;border-radius:24px;overflow:hidden;box-shadow:0 18px 70px #193c3210}.login-story{background:var(--green);color:white;padding:44px 52px;display:flex;flex-direction:column}.login-story .brand{color:white}.login-story .brand-icon{background:var(--accent);color:var(--green)}.story-content{padding:64px 0 36px}.story-content .eyebrow{color:#b6d4a0}.story-content h1{font-size:clamp(32px,3.5vw,46px);line-height:1.4;letter-spacing:0;margin:18px 0}.story-content p{font-size:14px;color:#c1d3c8;line-height:1.9}.learning-path{list-style:none;padding:0;margin:35px 0 0}.learning-path li{display:flex;gap:20px;align-items:center;padding:16px 0;border-top:1px solid #ffffff20}.learning-path li>span{font-family:Georgia,serif;color:#c7dea8;font-size:18px;width:65px;flex-shrink:0}.learning-path strong{font-size:14px;font-weight:500}.learning-path small{display:block;margin-top:7px;color:#9db9aa}.story-footer{margin:auto 0 0;font-size:11px;color:#a6bfb2;display:flex;gap:14px;align-items:center}.story-footer i{width:3px;height:3px;background:#a6bfb2;border-radius:50%}.login-form-panel{padding:60px 58px 25px;display:flex;flex-direction:column;justify-content:center}.login-form-wrap{margin:auto 0}.login-form-wrap h2{font-size:32px;margin:0 0 12px}.login-form-wrap>.muted{font-size:14px;margin-bottom:34px}.password-input{position:relative}.password-input input{padding-right:65px}.reveal{position:absolute;right:4px;top:5px;bottom:5px;border:0;background:none;color:var(--leaf);padding:8px 13px;font-size:12px}.login-help{font-size:12px;color:var(--muted);text-align:center;margin-top:22px}.login-note{border-top:1px solid var(--line);padding-top:24px;margin-top:35px;display:flex;gap:12px;color:var(--muted);font-size:12px}.login-note>span{width:24px;height:24px;display:grid;place-items:center;background:var(--pale);color:var(--leaf);border-radius:50%}.login-note p{margin:0}.login-copyright{text-align:center;color:#93a096;font-size:10px;margin:40px 0 0}.sidebar{width:226px;position:fixed;inset:0 auto 0 0;background:var(--green);color:white;padding:35px 23px 20px;display:flex;flex-direction:column;z-index:10}.sidebar .brand{font-size:19px;color:white}.sidebar .brand-icon{background:#d5e8aa;color:var(--green)}.sidebar .brand small{color:#a7c2b4}.nav-label{font-size:10px;letter-spacing:2px;color:#93b09f;margin:58px 12px 16px}.sidebar nav{display:grid;gap:7px}.sidebar nav button{text-align:left;border:0;color:#b6cfc1;background:none;padding:14px 15px;border-radius:9px;font-size:13px;display:flex;gap:14px;align-items:center}.sidebar nav button>span{font-size:18px;width:20px}.sidebar nav button.active{background:#d5e8aa;color:var(--green);font-weight:700}.sidebar nav button:hover:not(.active){background:#ffffff0d;color:white}.back-course{margin:32px 13px;color:#b6cfc1;font-size:12px}.sidebar-footer{margin-top:auto;border-top:1px solid #ffffff20;padding-top:23px;display:flex;gap:10px;align-items:center;font-size:11px}.sidebar-footer small{display:block;color:#93b09f;margin-top:5px}.avatar{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#436153;color:#d5e8aa}.logout{border:0;background:none;color:#b6cfc1;font-size:11px;margin-left:auto;padding:6px 0}.admin-main{margin-left:226px;padding:38px 40px;max-width:1780px}.admin-top{display:flex;justify-content:space-between;gap:20px;align-items:center;border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:25px}.admin-top h1{margin:0}.admin-top .eyebrow{font-size:10px;margin-bottom:10px}.top-actions,.actions{display:flex;gap:12px;align-items:center}.live-dot{font-size:11px;color:var(--muted)}.live-dot:before{content:'';display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--leaf);margin-right:7px}.section-heading{display:flex;justify-content:space-between;gap:15px;align-items:center;margin:0 0 22px}.section-heading p{font-size:13px;margin:0}.inline-label{display:flex;gap:10px;align-items:center;white-space:nowrap;margin:0;color:var(--muted);font-size:12px}.inline-label select{padding:8px 10px;font-size:12px}.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:22px}.metric{background:white;border:1px solid var(--line);border-radius:12px;padding:23px}.metric .metric-label{font-size:12px;color:var(--muted)}.metric strong{display:block;font-size:36px;line-height:1.3;font-weight:500;margin:15px 0 10px;font-variant-numeric:tabular-nums;letter-spacing:-1px}.metric p{font-size:11px;color:var(--muted);margin:0}.panel{background:white;border:1px solid var(--line);border-radius:12px;padding:24px;margin-bottom:22px;min-width:0}.overview-grid{display:grid;grid-template-columns:2.25fr 1fr;gap:22px}.panel-heading{display:flex;justify-content:space-between;align-items:start;gap:15px;margin-bottom:26px}.panel-heading h2{font-size:15px}.panel-heading p{font-size:11px;color:var(--muted);margin:0}.legend{font-size:10px;color:var(--muted);white-space:nowrap}.legend i{display:inline-block;background:var(--leaf);width:8px;height:8px;border-radius:50%;margin-right:6px}.chart{height:190px;position:relative}.chart svg{width:100%;height:100%;overflow:visible}.chart text{font-size:11px;fill:var(--muted)}.chart-empty{display:grid;place-items:center;height:100%;font-size:12px;color:var(--muted);background:linear-gradient(0deg,#f5f8f5,#fff);border-radius:8px}.overview-note{background:#eaf0e2;border-color:#dbe4d1;display:flex;flex-direction:column}.overview-note h2{font-size:24px;line-height:1.5;margin-bottom:12px}.overview-note p{font-size:11px;color:#66775d}.overview-note .eyebrow{font-size:10px}.overview-note strong{font-size:22px;color:var(--green)}.overview-note .text-button{margin-top:auto;text-align:left}.text-button{padding:8px 0;border:0;background:none;color:var(--leaf);font-size:12px}.badge{padding:5px 10px;border:1px solid var(--line);border-radius:30px;font-size:10px;color:var(--muted);white-space:nowrap}.lesson-map{display:grid;grid-template-columns:repeat(15,1fr);gap:7px;margin:10px 0 28px}.lesson-cell{min-height:43px;display:grid;place-items:center;border-radius:7px;background:var(--pale);color:var(--green);font-size:12px;font-variant-numeric:tabular-nums;border:1px solid #dce6de}.lesson-cell:hover{outline:2px solid #8aaa82;text-decoration:none}.table-wrap{overflow:auto;max-width:100%}table{border-collapse:collapse;width:100%;font-size:12px;text-align:left}th{font-size:10px;color:var(--muted);font-weight:500;padding:13px 12px;background:#f5f8f5;white-space:nowrap}td{padding:15px 12px;border-bottom:1px solid #edf1ed;line-height:1.7;vertical-align:middle}tr:last-child td{border-bottom:0}td .muted{display:block;font-size:10px}.course-name{min-width:210px;max-width:420px}.course-index{font-size:10px;display:inline-flex;background:var(--pale);border-radius:4px;padding:1px 6px;margin-right:8px;color:var(--leaf)}.mini-progress{display:flex;align-items:center;gap:10px;font-size:11px;color:var(--muted);white-space:nowrap}.mini-progress progress{width:85px;height:5px;accent-color:var(--leaf)}.status{padding:4px 8px;border-radius:5px;background:#edf5ea;color:#4c7554;font-size:10px;white-space:nowrap}.status.off{background:#f6eceb;color:#a35956}.search-bar{display:flex;gap:10px;align-items:center;margin-bottom:20px}.search-bar input{max-width:320px;font-size:12px}.search-bar span{margin-left:auto;font-size:11px}.row-actions{display:flex;gap:10px;white-space:nowrap}.row-actions button{background:none;border:0;padding:5px 0;font-size:11px;color:var(--leaf)}.row-actions .danger{color:var(--danger)}.pagination{display:flex;justify-content:flex-end;align-items:center;gap:16px;margin-top:20px}.pagination span{font-size:11px;color:var(--muted)}.pagination button{font-size:11px;min-height:32px;padding:7px 12px}.empty-row{text-align:center;color:var(--muted);padding:45px 10px}.admin-footer{font-size:10px;color:#819085;line-height:1.8;display:flex;justify-content:space-between;gap:20px}.settings-panel{max-width:600px;padding:35px}.settings-panel h2{font-size:24px;margin:20px 0 10px}.settings-panel p{font-size:12px}.settings-panel form{margin-top:25px;max-width:400px}.settings-panel button{margin-top:10px}dialog{border:0;padding:30px;border-radius:14px;width:min(540px,calc(100% - 28px));max-height:88svh;color:var(--ink);box-shadow:0 20px 80px #102b3344}dialog::backdrop{background:#102c2666;backdrop-filter:blur(3px)}dialog.wide-dialog{width:min(900px,calc(100% - 28px))}.dialog-heading{display:flex;gap:15px;justify-content:space-between;align-items:start}.dialog-heading h2{font-size:23px}.dialog-heading .eyebrow{font-size:10px}.icon-button{border:0;background:var(--pale);color:var(--muted);font-size:24px;line-height:1;width:32px;height:32px;border-radius:50%;flex-shrink:0}.field-row{display:grid;grid-template-columns:1fr 2fr;gap:15px}.dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:25px}.credentials-wrap{max-height:45vh}.credentials-wrap td:last-child{font-family:Consolas,monospace;user-select:all}.detail-summary{display:flex;gap:15px;margin:20px 0}.detail-summary>div{flex:1;background:var(--pale);padding:17px;border-radius:8px;font-size:12px}.detail-summary strong{display:block;font-size:24px;margin-top:5px}.detail-events{margin-top:30px}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);padding:12px 24px;background:var(--green);color:white;border-radius:10px;z-index:100;font-size:13px;box-shadow:0 6px 25px #0002}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}[hidden]{display:none!important}.error-page{display:grid;place-items:center;min-height:100svh;padding:30px}.error-page main{max-width:600px}.error-page h1{line-height:1.6}.error-page p{color:var(--muted)}@media(min-width:1600px){.admin-main{padding:42px 55px}.chart{height:220px}.metric{padding:26px}}@media(max-width:1120px){.sidebar{width:190px;padding:30px 16px}.sidebar .brand{font-size:16px}.admin-main{margin-left:190px;padding:26px 24px}.live-dot{display:none}.metric{padding:18px}.overview-grid{grid-template-columns:2fr 1fr}.login-story{padding:35px}.login-form-panel{padding:40px 35px 25px}}@media(max-width:760px){.login-page{padding:0;background:white}.login-shell{border-radius:0;min-height:100svh;grid-template-columns:1fr}.login-story{padding:25px}.story-content{padding:28px 0 0}.story-content h1{font-size:30px;margin:10px 0}.story-content h1 br{display:none}.story-content>p,.learning-path,.story-footer{display:none}.login-form-panel{padding:35px 25px 22px}.login-form-wrap h2{font-size:27px}.login-form-wrap>.muted{margin-bottom:25px}.login-copyright{margin-top:30px}.sidebar{position:static;width:100%;padding:18px 20px 12px}.sidebar .brand{font-size:17px}.sidebar .brand small{display:none}.sidebar .brand-icon{width:28px;height:28px;font-size:20px;border-radius:8px}.sidebar nav{display:flex;gap:4px;margin-top:18px}.sidebar nav button{flex:1;padding:10px 5px;justify-content:center;font-size:11px;white-space:nowrap}.sidebar nav button span,.nav-label,.sidebar-footer,.back-course{display:none}.admin-main{margin:0;padding:24px 16px}.admin-top{padding-bottom:18px;margin-bottom:18px;align-items:center}.admin-top h1{font-size:26px}.admin-top .eyebrow{font-size:8px;letter-spacing:1px}.top-actions .secondary{padding:8px 10px;min-height:36px;font-size:11px}.section-heading{align-items:start;flex-wrap:wrap}.section-heading p{font-size:12px}.metric-grid{grid-template-columns:repeat(2,1fr);gap:10px}.metric{padding:18px}.metric strong{font-size:30px;margin:10px 0 7px}.overview-grid{grid-template-columns:1fr}.overview-note{display:none}.panel{padding:16px}.panel-heading{gap:8px}.panel-heading h2{font-size:14px}.badge{display:none}.lesson-map{grid-template-columns:repeat(8,1fr);gap:5px}.lesson-cell{min-height:38px}.chart{height:170px}.admin-footer{display:block}.admin-footer span{display:block;margin-top:5px}.search-bar{flex-wrap:wrap}.search-bar input{flex:1;width:180px}.search-bar span{width:100%;margin:0}.actions{gap:8px}.actions .primary,.actions .secondary{padding:10px 12px;font-size:11px}.pagination{gap:10px}.field-row{grid-template-columns:1fr}.dialog-actions{flex-wrap:wrap}dialog{padding:22px}.dialog-heading h2{font-size:20px}.detail-summary{gap:8px}.detail-summary>div{padding:12px;font-size:10px}.settings-panel{padding:20px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}