:root{--forest:#0fa36b;--forest-2:#0c855a;--deep1:#0e352a;--deep2:#092019;--paper:#eff3f0;--surface:#ffffff;--ink:#22312b;--muted:#6e7d75;--clay:#c97b55;--sage:#d9ebe0;--danger:#b9473f;--line:#e2e9e4;--shadow:0 18px 44px rgba(13,60,45,.10)}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC","Microsoft YaHei",sans-serif}
.app-shell{min-height:100vh;display:grid;grid-template-columns:236px minmax(0,1fr)}
.app-sidebar{position:sticky;top:14px;align-self:start;height:calc(100vh - 28px);margin:14px 0 14px 14px;overflow-y:auto;overflow-x:hidden;display:flex;flex-direction:column;background:linear-gradient(180deg,var(--deep1) 0%,var(--deep2) 100%);color:#f2f7f4;padding:24px 16px 20px;border-radius:22px;box-shadow:0 14px 34px -18px rgba(9,32,25,.55);isolation:isolate}
.app-sidebar::before{content:"";position:absolute;z-index:-1;inset:0;border-radius:22px;opacity:.16;background-repeat:no-repeat;background-size:100% 100%;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='900' viewBox='0 0 240 900'%3E%3Cg fill='none' stroke-linecap='round'%3E%3Cg stroke='%232fae7d'%3E%3Cpath d='M-30 60L200 -20' stroke-width='10' opacity='.5'/%3E%3Cpath d='M-20 190L190 20' stroke-width='6' opacity='.28'/%3E%3Cpath d='M20 420L230 300' stroke-width='12' opacity='.4'/%3E%3Cpath d='M-30 640L170 480' stroke-width='8' opacity='.3'/%3E%3Cpath d='M60 920L260 720' stroke-width='11' opacity='.36'/%3E%3C/g%3E%3Cg stroke='%23c9a06a'%3E%3Cpath d='M200 40L-20 230' stroke-width='9' opacity='.38'/%3E%3Cpath d='M230 300L40 470' stroke-width='7' opacity='.28'/%3E%3Cpath d='M210 620L-30 800' stroke-width='12' opacity='.34'/%3E%3Cpath d='M150 760L230 880' stroke-width='8' opacity='.3'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E")}
:focus-visible{outline:3px solid color-mix(in srgb,var(--forest),white 35%);outline-offset:3px}

body{font-size:14px;line-height:1.5}
button,input,select{font:inherit}
button{cursor:pointer}
button:disabled{cursor:default;opacity:.58}
.brand{position:relative;display:flex;align-items:center;gap:10px;margin:-2px -2px 4px;padding:11px 12px;border-radius:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.08);color:#fff;font-size:18px;font-weight:700;letter-spacing:.04em;text-decoration:none}
.brand-mark{display:grid;place-items:center;width:34px;height:34px;border:1px solid rgba(255,255,255,.16);border-radius:11px;background:rgba(15,163,107,.32);font-size:17px}
#primaryNav{position:relative;display:grid;gap:5px;margin-top:30px}
#primaryNav a{display:flex;align-items:center;min-height:42px;padding:0 14px;border-radius:12px;color:rgba(242,247,244,.72);font-size:14px;text-decoration:none;transition:background .18s,color .18s}
#primaryNav a:hover{background:rgba(255,255,255,.08);color:#fff}
#primaryNav a[aria-current="page"]{background:var(--forest);color:#fff;font-weight:600;box-shadow:0 8px 16px -8px rgba(15,163,107,.55)}
.sidebar-user{position:absolute;right:16px;bottom:22px;left:16px;color:rgba(242,247,244,.5);font-size:12px}
.app-page{min-width:0}
.topbar{position:sticky;top:14px;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:24px;margin:14px 16px 0;padding:14px 22px;background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:0 4px 14px rgba(16,40,33,.05)}
.topbar h1{margin:0;color:var(--ink);font-size:22px;font-weight:700;letter-spacing:.02em}
#h-meta{margin-top:4px;color:var(--muted);font-size:13px}
#h-meta span+span::before{content:"·";margin:0 8px;color:var(--sage)}
.topbar-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:8px}
.wrap{max-width:1280px;margin:0 auto;padding:20px 24px 48px}
.panel{margin-bottom:18px;padding:22px 24px;background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:0 6px 18px rgba(16,40,33,.06)}
.panel h2{margin:0 0 16px;padding-left:11px;border-left:3px solid var(--forest);color:var(--ink);font-size:17px;font-weight:700}
.panel h3{margin:20px 0 10px;color:var(--forest-2);font-size:14px;font-weight:700}.panel h3:first-of-type{margin-top:0}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.videobox{position:relative;overflow:hidden;background:var(--ink);border-radius:12px}.videobox video{display:block;width:100%}.pip{position:absolute;top:14px;left:14px;overflow:hidden;width:20%;border:2px solid color-mix(in srgb,var(--surface),transparent 12%);border-radius:8px;box-shadow:0 6px 18px color-mix(in srgb,var(--ink),transparent 55%)}.pip video{width:100%}
.pctrl,.room-ft{display:flex;align-items:center;gap:10px;margin-top:14px}.pctrl input[type=range]{flex:1;accent-color:var(--forest)}
button,.pctrl button,.room-ft button{padding:8px 14px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink);font-size:13px;transition:background .18s,border-color .18s,color .18s}
button:hover,.pctrl button:hover,.room-ft button:not(.primary):not(.danger):hover{border-color:var(--forest);background:color-mix(in srgb,var(--sage),transparent 55%)}
button.primary,.room-ft button.primary{border-color:var(--forest);background:var(--forest);color:var(--surface)}button.primary:hover,.room-ft button.primary:hover{background:var(--forest-2)}
button.danger,.room-ft button.danger{border-color:var(--danger);background:var(--danger);color:var(--surface)}button.danger:hover,.room-ft button.danger:hover{background:color-mix(in srgb,var(--danger),var(--ink) 15%)}
input,select{max-width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink)}input::placeholder{color:var(--muted)}
.pctrl .t,.muted{color:var(--muted);font-size:13px}.pctrl .t{min-width:110px;text-align:center}.note{margin-top:8px;color:var(--muted);font-size:12px;line-height:1.75}
.tabs{display:flex;gap:24px;margin-bottom:18px;border-bottom:1px solid var(--line)}.tabs span{padding:8px 2px;border-bottom:2px solid transparent;color:var(--muted);font-size:14px;cursor:pointer}.tabs span.on{border-color:var(--forest);color:var(--forest);font-weight:700}
.metrics{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}.metric{position:relative;overflow:hidden;padding:14px;border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:0 3px 10px rgba(16,40,33,.05)}.metric::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--forest),#4fd1a1)}.metric .k{margin:4px 0 6px;color:var(--muted);font-size:12px}.metric .v{color:var(--forest-2);font-size:22px;font-weight:700}.metric .v small{color:var(--muted);font-size:12px;font-weight:400}
.metric:nth-child(4n+2)::before{background:linear-gradient(90deg,#e0913c,#f0b96b)}.metric:nth-child(4n+2) .v{color:#c77b2e}
.metric:nth-child(4n+3)::before{background:linear-gradient(90deg,#3b82f6,#7aa7f8)}.metric:nth-child(4n+3) .v{color:#2f6fd6}
.metric:nth-child(4n+4)::before{background:linear-gradient(90deg,#8b5cf6,#b18cf8)}.metric:nth-child(4n+4) .v{color:#7442e0}
.chart{width:100%;height:320px}.chart-sm{width:100%;height:260px}.chart,.chart-sm{border-radius:12px;background:var(--surface);box-shadow:0 3px 10px rgba(16,40,33,.05)}.svg-chart{width:100%;height:auto}.svg-chart svg{display:block;width:100%;height:auto;filter:drop-shadow(0 6px 12px rgba(16,40,33,.07))}
table{width:100%;border-collapse:collapse;font-size:13px}th,td{padding:10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{background:color-mix(in srgb,var(--sage),var(--surface) 55%);color:var(--ink);font-weight:700;white-space:nowrap}td{color:var(--ink)}
.transcript{max-height:400px;overflow:auto;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--paper);font-size:13px;line-height:1.9}.transcript .who{color:var(--forest-2);font-weight:700}.transcript .who.S{color:var(--clay)}.transcript .ts{color:var(--muted);font-size:12px}
.lesson-item{display:flex;align-items:center;gap:14px;padding:14px 10px;border-bottom:1px solid var(--line);border-radius:10px;cursor:pointer}.lesson-item:hover{background:color-mix(in srgb,var(--sage),transparent 60%)}.lesson-item b{color:var(--forest-2);font-size:14px}.tag{display:inline-flex;align-items:center;padding:3px 10px;border-radius:999px;background:color-mix(in srgb,var(--sage),var(--surface) 62%);color:var(--forest-2);font-size:12px;white-space:nowrap}.tag.run{background:color-mix(in srgb,var(--sage),var(--surface) 28%);color:var(--forest-2)}.tag.end{background:color-mix(in srgb,var(--paper),var(--surface) 20%);color:var(--muted)}.back{display:inline-block;margin-bottom:12px;color:var(--forest-2);font-size:13px;cursor:pointer}.nar p,.nar li{color:var(--ink);font-size:14px;line-height:1.9}.nar ul{margin:6px 0 0 20px}
.rooms{display:grid;grid-template-columns:repeat(auto-fill,minmax(360px,1fr));gap:18px}.room-card{padding:18px;border:1px solid var(--line);border-radius:16px;background:var(--surface);box-shadow:0 4px 14px rgba(16,40,33,.05)}.room-hd{display:flex;align-items:center;gap:10px;margin-bottom:14px}.room-hd b{color:var(--ink);font-size:15px}.slots{display:flex;flex-direction:column;gap:8px}.slot{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:9px;background:color-mix(in srgb,var(--paper),var(--surface) 55%);font-size:13px}.slot .role{min-width:110px;color:var(--forest-2);font-weight:700}.slot .sn{color:var(--muted);font-size:12px}.dot{flex:0 0 auto;width:8px;height:8px;border-radius:50%}.dot.on{background:var(--forest);box-shadow:0 0 0 3px color-mix(in srgb,var(--sage),transparent 35%)}.dot.off{background:var(--muted);opacity:.6}
.alert{margin-bottom:14px;padding:12px 14px;border:1px solid color-mix(in srgb,var(--danger),transparent 55%);border-radius:12px;background:color-mix(in srgb,var(--danger),transparent 91%);color:var(--danger);font-size:13px;line-height:1.8}.alert a{color:var(--forest-2);font-weight:700}
.primary-action{flex:1;width:100%;padding:11px 14px;border:1px solid var(--forest);border-radius:10px;background:var(--forest);color:var(--surface);font-weight:700}.primary-action:hover{background:var(--forest-2)}.primary-action.danger{border-color:var(--danger);background:var(--danger)}.primary-action.danger:hover{background:color-mix(in srgb,var(--danger),var(--ink) 15%)}
.login-action{display:inline-flex;align-items:center;justify-content:center;max-width:240px;margin-top:16px;text-decoration:none}
.room-detail{color:var(--forest-2);font-size:13px;font-weight:700;text-decoration:none;white-space:nowrap}.room-detail:hover{text-decoration:underline}
.status-chip.success{background:color-mix(in srgb,var(--sage),var(--surface) 28%);color:var(--forest-2)}.status-chip.warning{background:color-mix(in srgb,var(--clay),var(--surface) 85%);color:color-mix(in srgb,var(--clay),var(--ink) 35%)}.status-chip.danger{background:color-mix(in srgb,var(--danger),var(--surface) 90%);color:var(--danger)}
.progress-list{display:grid;gap:12px}.progress-card{padding:14px;border:1px solid var(--line);border-radius:12px;background:color-mix(in srgb,var(--paper),var(--surface) 65%)}.progress-card .room-hd{align-items:flex-start;margin-bottom:10px}.progress-track{height:7px;overflow:hidden;border-radius:999px;background:color-mix(in srgb,var(--sage),var(--surface) 44%)}.progress-track span{display:block;height:100%;border-radius:inherit;background:var(--forest)}.progress-steps{display:grid;gap:6px;margin-top:10px}.progress-steps>div{display:flex;align-items:center;justify-content:space-between;gap:8px;color:var(--muted);font-size:12px}.empty-state{padding:20px 10px;text-align:center}.empty-state h2{margin-bottom:6px;border:0;padding:0;font-size:15px}
.grid2>*,.grid3>*,.metrics>*,.room-card,.progress-card{min-width:0}
.panel,.room-card,.topbar,.lesson-item{overflow-wrap:anywhere}
.rooms{grid-template-columns:repeat(auto-fill,minmax(min(100%,360px),1fr))}
.slot{flex-wrap:wrap}.slot .sn{overflow-wrap:anywhere;min-width:0}
.table-responsive{max-width:100%;overflow-x:auto;overscroll-behavior-x:contain}
.table-responsive table{min-width:480px}.table-responsive td{overflow-wrap:anywhere}
.tabs button{padding:8px 2px;border:0;border-bottom:2px solid transparent;border-radius:0;background:transparent;color:var(--muted);font-size:14px}
.tabs button.on{border-color:var(--forest);color:var(--forest);font-weight:700}
.room-ft button.primary-action:not(.danger){border-color:var(--forest);background:var(--forest);color:var(--surface)}
.room-ft button.primary-action:not(.danger):hover{background:var(--forest-2)}
@media (max-width:900px){.app-shell{grid-template-columns:1fr}.app-sidebar{position:relative;top:auto;align-self:auto;flex-direction:row;height:auto;margin:0;overflow:visible;align-items:center;gap:18px;padding:14px 20px;border-radius:0}.brand{margin:0}.brand,#primaryNav a{flex:0 0 auto}#primaryNav{display:flex;flex-wrap:wrap;gap:2px;margin:0;min-width:0}.sidebar-user{display:none}.topbar{position:sticky;top:0;margin:0;border-radius:0;border-left:0;border-right:0;padding:18px 20px}.wrap{padding:22px 20px 40px}.grid2,.grid3{grid-template-columns:1fr}body .report-hero .metrics{grid-template-columns:repeat(2,minmax(0,1fr))}body .report-hero .insights{grid-template-columns:1fr}.app-sidebar #primaryNav a{white-space:nowrap}}
@media (max-width:640px){.app-sidebar{align-items:flex-start;flex-direction:column;gap:12px}.topbar{align-items:flex-start;flex-direction:column;gap:12px}.topbar-actions{justify-content:flex-start}.wrap{padding:18px 14px 32px}.panel{padding:18px 16px;border-radius:14px}.rooms{grid-template-columns:1fr}.room-hd,.lesson-item{align-items:flex-start;flex-wrap:wrap}.pctrl,.room-ft{align-items:stretch;flex-wrap:wrap}.pctrl input[type=range]{min-width:140px}.metric{padding:12px}}
@media (pointer:coarse){button,input,select,.tabs button,#primaryNav a,.report-nav a,.room-detail,.back{min-height:44px}button,.tabs button{min-width:44px}.room-detail,.back{display:inline-flex;align-items:center}.pctrl input[type=range]{height:44px}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media print{body{background:var(--surface);font-size:11px}.app-sidebar,.topbar,.back,.pctrl,.room-ft,.videobox,.tabs,button,.report-nav,.report-filters{display:none!important}.app-shell{display:block}.wrap{max-width:none;padding:0}.grid2,.grid3,body .report-hero .insights{grid-template-columns:1fr}.panel,.room-card{box-shadow:none;break-inside:auto;border-color:var(--line)}.chart,.chart-sm,.metric{break-inside:avoid}.chart{height:240px}.chart-sm{height:210px}.transcript{max-height:none;overflow:visible}.table-responsive{overflow:visible}.table-responsive table{min-width:0;table-layout:fixed}#viewLive,#viewHeat{display:block!important}#seat2d{overflow:visible!important}a{color:var(--ink);text-decoration:none}}