:root{--primary:#2563eb;--primary-dark:#1d4ed8;--success:#16a34a;--warning:#d97706;--error:#dc2626;--gray-900:#111827;--gray-700:#374151;--gray-600:#4b5563;--gray-200:#e5e7eb;--gray-100:#f3f4f6;--gray-50:#f9fafb;--white:#fff}*{box-sizing:border-box}body{color:var(--gray-900);background:var(--gray-50);margin:0;font-family:Inter,Noto Sans JP,system-ui,-apple-system,sans-serif}a{color:inherit;text-decoration:none}h1{margin:0 0 8px;font-size:24px;line-height:1.3}h2,h3,p{margin:0}.muted{color:var(--gray-600)}.centered-message{min-height:100vh;color:var(--gray-600);place-items:center;display:grid}.auth-page{background:radial-gradient(circle at top right, #dbeafe, transparent 40%), var(--gray-50);place-items:center;min-height:100vh;padding:24px;display:grid}.auth-card{background:var(--white);border:1px solid var(--gray-200);border-radius:16px;gap:12px;width:min(460px,100%);padding:24px;display:grid;box-shadow:0 8px 24px #11182712}.demo-actions{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.app-shell{grid-template-rows:auto 1fr;min-height:100vh;display:grid}.app-header{z-index:20;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--gray-200);background:#fffffff2;align-items:center;gap:16px;padding:10px 18px;display:flex;position:sticky;top:0}.brand{color:var(--primary);font-weight:700}.main-nav{flex-wrap:wrap;gap:6px;display:flex}.nav-link{color:var(--gray-700);border-radius:8px;padding:8px 10px}.nav-link.active{color:var(--primary-dark);background:#dbeafe}.header-right{align-items:center;gap:10px;margin-left:auto;display:flex}.user-chip{color:var(--gray-600);background:var(--gray-100);border-radius:9999px;padding:6px 10px;font-size:12px}.app-main{width:min(1120px,100%);margin:0 auto;padding:20px}.button{cursor:pointer;border:1px solid #0000;border-radius:8px;justify-content:center;align-items:center;padding:10px 14px;font-size:14px;font-weight:500;display:inline-flex}.button.primary{background:var(--primary);color:var(--white)}.button.primary:hover{background:var(--primary-dark)}.button:disabled{opacity:.55;cursor:not-allowed}.button.secondary{background:var(--white);color:var(--gray-700);border-color:var(--gray-200)}.button.danger{background:var(--white);color:#b42318;border-color:#b4231859}.button.danger:hover{background:#b423180f}.button.tiny{padding:6px 10px;font-size:12px}.button.inline{margin-left:6px}.card-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px;margin-top:14px;display:grid}.card{background:var(--white);border:1px solid var(--gray-200);border-radius:12px;gap:10px;padding:12px;display:grid}.card-image{object-fit:cover;border-radius:10px;width:100%;height:150px}.progress-track{background:var(--gray-200);border-radius:9999px;width:100%;height:8px;overflow:hidden}.progress-fill{background:var(--primary);height:100%;transition:width .3s ease-in-out}.stat-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-top:16px;display:grid}.stat-card{background:var(--white);border:1px solid var(--gray-200);border-radius:12px;padding:16px}.stat-value{color:var(--primary-dark);margin-top:10px;font-size:28px;font-weight:700}.table-like{gap:10px;margin-top:14px;display:grid}.row{background:var(--white);border:1px solid var(--gray-200);border-radius:12px;justify-content:space-between;align-items:center;gap:12px;padding:14px 16px;display:flex}.row.selected{border-color:#93c5fd;box-shadow:0 0 0 2px #3b82f61f}.skeleton{position:relative;overflow:hidden}.skeleton:after{content:"";background:linear-gradient(90deg,#0000,#fff9,#0000);animation:1.4s infinite shimmer;position:absolute;inset:0;transform:translate(-100%)}.skeleton-line{background:var(--gray-100);border-radius:999px;height:12px}.skeleton-line.wide{width:70%}@keyframes shimmer{to{transform:translate(100%)}}.form-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px;margin-top:14px;display:grid}input{border:1px solid var(--gray-200);background:var(--white);width:100%;color:var(--gray-900);border-radius:8px;padding:10px 12px}select{border:1px solid var(--gray-200);background:var(--white);width:100%;color:var(--gray-900);border-radius:8px;padding:8px 10px}.badge{border-radius:999px;justify-content:center;align-items:center;padding:4px 10px;font-size:12px;font-weight:600;display:inline-flex}.badge.success{color:var(--success);background:#dcfce7}.badge.warning{color:var(--warning);background:#fef3c7}.badge.error{color:var(--error);background:#fee2e2}.badge.neutral{background:var(--gray-100);color:var(--gray-700)}.inline-actions{flex-wrap:wrap;align-items:center;gap:10px;margin-top:14px;display:flex}.video-wrap{border:1px solid var(--gray-200);background:#000;border-radius:12px;margin-top:14px;overflow:hidden}.video-wrap iframe{aspect-ratio:16/9;border:0;width:100%}.video-wrap .yt-player{aspect-ratio:16/9;width:100%}.alert{border-radius:8px;padding:10px 12px;font-size:13px}.alert.warning{color:#9a3412;background:#fff7ed}.alert.error{color:#991b1b;background:#fef2f2}.invite-link-wrap{margin-top:8px}.invite-link{color:var(--primary-dark);word-break:break-all;text-decoration:underline}.invite-notify-error{color:#b45309;margin-top:6px;font-size:12px}.highlight{color:inherit;background:#fde68a;border-radius:4px;padding:0 2px}.row-actions{flex-wrap:wrap;gap:8px;margin-top:10px;display:flex}.log-detail-actions{align-items:flex-start}.log-detail-actions p{margin-top:4px}.log-detail-panel{background:var(--gray-100);color:var(--gray-700);border-radius:10px;gap:10px;margin-top:8px;padding:10px 12px;font-size:12px;display:grid}.log-panel-body{grid-template-columns:minmax(0,1.6fr) minmax(260px,1fr);align-items:start;gap:16px;margin-top:12px;display:grid}.log-panel-list{min-width:0}.log-panel-side{align-self:start;position:sticky;top:110px}.side-panel{background:var(--white);border:1px solid var(--gray-200);border-radius:12px;gap:10px;max-height:calc(100vh - 150px);padding:12px;display:grid;overflow:auto}.side-panel .detail-title:first-child{background:var(--white);z-index:1;padding-bottom:6px;position:sticky;top:0}.inline-detail{display:block}.detail-section{gap:6px;display:grid}.detail-title{color:var(--gray-900);font-weight:600}.detail-row{grid-template-columns:90px 1fr;align-items:center;gap:8px;display:grid}.detail-label{color:var(--gray-600)}.detail-value{color:var(--gray-900);word-break:break-all}.shortcut-hint{margin-top:-6px;font-size:11px}.pagination-hint{margin-top:10px}.invite-log-panel{margin-top:20px}.panel-header{justify-content:space-between;align-items:center;gap:12px;display:flex}.panel-header.active h2:after{content:" 操作中";color:var(--primary-dark);margin-left:6px;font-size:11px}.panel-header h2{margin:0}.invite-log-row{align-items:flex-start}.invite-log-row h3{font-size:15px}.invite-log-row .muted{margin-top:4px}.log-filters{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));align-items:end;gap:10px;margin-top:10px;display:grid}.log-filters label{color:var(--gray-600);gap:4px;font-size:12px;display:grid}.filter-input-row{align-items:center;gap:8px;display:flex}.context-menu{position:relative}.context-menu summary{list-style:none}.context-menu summary::-webkit-details-marker{display:none}.context-menu-panel{background:var(--white);border:1px solid var(--gray-200);z-index:5;border-radius:10px;gap:6px;min-width:160px;padding:8px;display:grid;position:absolute;top:calc(100% + 6px);right:0;box-shadow:0 12px 24px #1118271f}.context-menu-panel .button{justify-content:flex-start;width:100%}.log-filters .button{justify-self:start}.filter-summary{margin-top:8px;font-size:12px}.toast{color:var(--white);opacity:0;z-index:999;background:#111827eb;border-radius:10px;align-items:center;gap:8px;padding:10px 14px;font-size:12px;transition:opacity .2s,transform .2s;display:flex;position:fixed;bottom:20px;right:20px;transform:translateY(6px)}.toast.show{opacity:1;transform:translateY(0)}.empty-state{flex-wrap:wrap;align-items:center;gap:10px;margin-top:12px;display:flex}.cooldown-hint{color:#92400e;margin-top:10px;font-size:13px}@media (width<=840px){.app-header{flex-direction:column;align-items:flex-start}.header-right{margin-left:0}.demo-actions{grid-template-columns:1fr}}@media (width<=980px){.log-panel-body{grid-template-columns:1fr}.log-panel-side{display:none;position:static}}@media (width>=981px){.inline-detail{display:none}}