:root{--bg: #f6f7f9;--surface: #ffffff;--border: #e4e7ec;--text: #1a1d23;--muted: #6b7280;--primary: #2563eb;--primary-hover: #1d4ed8;--radius: 12px;--shadow: 0 1px 3px rgba(16, 24, 40, .08), 0 1px 2px rgba(16, 24, 40, .04);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}a{text-decoration:none;color:inherit}.page{min-height:100vh}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 24px;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;color:var(--primary)}.building-title{font-weight:600;font-size:18px;flex:1;text-align:center}.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid transparent;border-radius:10px;padding:9px 16px;font-size:14px;font-weight:600;cursor:pointer;transition:background .15s,border-color .15s;background:transparent;color:var(--text)}.btn.primary{background:var(--primary);color:#fff}.btn.primary:hover{background:var(--primary-hover)}.btn.primary:disabled{opacity:.6;cursor:default}.btn.ghost{border-color:var(--border);background:var(--surface)}.btn.ghost:hover{background:#f0f1f3}.icon-btn{background:transparent;border:none;cursor:pointer;color:var(--muted);padding:4px;border-radius:8px}.icon-btn:hover{background:#f0f1f3}.container{max-width:1100px;margin:0 auto;padding:32px 24px 64px}h1{font-size:28px;margin:0 0 4px}.subtitle{color:var(--muted);margin:0 0 28px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:18px}.folder-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px 18px;display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;box-shadow:var(--shadow);transition:transform .12s,box-shadow .12s}.folder-card:hover{transform:translateY(-2px);box-shadow:0 6px 16px #1018281a}.folder-icon{color:var(--primary)}.folder-name{font-weight:600}.folder-meta{font-size:13px;color:var(--muted)}.tag-row{margin-bottom:36px}.tag-title{font-size:18px;margin:0 0 14px;padding-bottom:8px;border-bottom:1px solid var(--border)}.thumb-strip{display:flex;gap:14px;overflow-x:auto;padding-bottom:8px}.thumb{position:relative;flex:0 0 auto;width:200px;height:130px;border-radius:10px;overflow:hidden;border:1px solid var(--border);background:#eceef1;cursor:pointer;padding:0}.thumb img{width:100%;height:100%;object-fit:cover;display:block}.thumb-fallback{width:100%;height:100%;display:flex;align-items:center;justify-content:center;color:var(--muted)}.play-badge{position:absolute;bottom:8px;right:8px;background:#0009;color:#fff;border-radius:50%;width:30px;height:30px;display:flex;align-items:center;justify-content:center}.center{display:flex;align-items:center;justify-content:center;gap:10px;padding:48px}.muted{color:var(--muted)}.error{color:#dc2626;font-size:14px}.empty{display:flex;flex-direction:column;align-items:center;gap:14px;padding:64px 24px;color:var(--muted);text-align:center}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#10182873;display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}.modal{background:var(--surface);border-radius:16px;padding:24px;width:100%;max-width:440px;box-shadow:0 20px 40px #10182833}.modal h2{margin:0 0 16px;font-size:20px}.modal-head{display:flex;align-items:center;justify-content:space-between}.modal-head h2{margin:0}.modal input[type=text],.modal input[type=file]{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;font-size:14px;margin-bottom:14px}.field-label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--muted)}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:8px}.file-list{list-style:none;margin:0 0 14px;padding:0;max-height:160px;overflow-y:auto}.file-list li{display:flex;align-items:center;gap:8px;font-size:13px;padding:6px 0;color:var(--text)}.file-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lightbox{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000e6;display:flex;align-items:center;justify-content:center;z-index:100;padding:24px}.lightbox-close{position:absolute;top:18px;right:18px;background:#ffffff1f;border:none;color:#fff;border-radius:50%;width:46px;height:46px;display:flex;align-items:center;justify-content:center;cursor:pointer}.lightbox-content{max-width:92vw;max-height:88vh;display:flex;flex-direction:column;align-items:center;gap:12px}.lightbox-content img,.lightbox-content video{max-width:92vw;max-height:80vh;border-radius:8px}.lightbox-caption{color:#d1d5db;font-size:14px}.upload-progress{margin-bottom:14px}.progress-bar{height:8px;border-radius:6px;background:#e8eaed;overflow:hidden;margin-top:6px}.progress-fill{height:100%;background:var(--primary);transition:width .2s ease}.comments{margin-top:48px;border-top:1px solid var(--border);padding-top:12px}.comments .tag-title{display:flex;align-items:center;gap:8px;border-bottom:none}.comment-form{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);margin-bottom:24px}.comment-form-row{display:flex;gap:16px;align-items:center;flex-wrap:wrap;margin-bottom:12px}.comment-form input[type=text]{flex:1;min-width:180px;padding:10px 12px;border:1px solid var(--border);border-radius:10px;font-size:14px}.comment-form textarea{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;font-size:14px;font-family:inherit;resize:vertical;margin-bottom:10px}.rating-pick{display:flex;align-items:center;gap:8px}.rating-pick .field-label{margin:0}.stars{display:inline-flex;gap:2px;color:#f59e0b}.stars .star{color:#d1d5db}.stars .star.filled{color:#f59e0b}.stars.interactive .star{cursor:pointer}.comment-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}.comment{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px}.comment-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px}.comment-body{margin:0 0 8px;white-space:pre-wrap}.comment-date{font-size:12px;color:var(--muted)}.spin{animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}