*{box-sizing:border-box}:root{--bg:#fffbf5;--surface:#fff;--text:#22333b;--muted:#53636b;--primary:#2b7a78;--primary-dark:#1f5f5d;--accent:#f2994a;--accent-dark:#d97b2e;--border:#eae0d1;--radius:20px;--shadow:0 8px 20px #22333b14}html,body{background:var(--bg);color:var(--text);width:100%;margin:0;padding:0;font-family:Nunito,Segoe UI,Arial,sans-serif;font-size:19px;line-height:1.55;overflow-x:hidden}#root{min-height:100vh}a,button{font-family:inherit}a:focus-visible,button:focus-visible,textarea:focus-visible,input:focus-visible{outline:3px solid var(--accent-dark);outline-offset:2px}.container{width:100%;max-width:480px;min-height:100vh;margin:0 auto;padding:24px 20px 48px;overflow-x:hidden}.center-column{text-align:center;flex-direction:column;justify-content:center;align-items:center;display:flex}.setup-emoji{margin-bottom:8px;font-size:56px}.headline{color:var(--text);margin:8px 0 6px;font-size:2rem;font-weight:800}.subheadline{color:var(--muted);margin:0 0 20px;font-size:1.15rem}.muted-text{color:var(--muted);font-size:1rem}.home-top{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:20px;display:flex}.home-badge{color:var(--primary);font-size:1rem;font-weight:700}.device-chip{background:var(--surface);border:1px solid var(--border);color:var(--text);border-radius:999px;padding:8px 16px;font-size:.95rem;font-weight:700;text-decoration:none}.need-help-btn{text-align:center;background:var(--accent);color:#fff;border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:28px;padding:24px;font-size:1.4rem;font-weight:800;text-decoration:none;display:block}.need-help-btn:active{background:var(--accent-dark)}.action-grid{grid-template-columns:1fr 1fr;gap:18px;display:grid}.action-card{background:var(--surface);border:1px solid 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var(--border);border-radius:var(--radius);box-shadow:var(--shadow);text-align:center;padding:24px}.answer-icon{margin-bottom:8px;font-size:2.5rem}.loading-text{color:var(--primary-dark);font-size:1.2rem;font-weight:700}.result-card{text-align:left}.result-question{color:var(--text);margin:0 0 10px;font-size:1.2rem;font-style:italic;font-weight:700}.result-device-chip{margin-bottom:4px;display:inline-block}.feedback-question{text-align:center;margin:22px 0 10px;font-size:1.1rem;font-weight:700}.feedback-row{gap:16px;display:flex}.feedback-btn{background:var(--surface);border:2px solid var(--border);min-height:52px;color:var(--text);border-radius:var(--radius);cursor:pointer;flex:1;padding:14px 8px;font-size:1.02rem;font-weight:700}.feedback-btn-active{border-color:var(--primary);background:var(--primary);color:#fff}.feedback-thanks{text-align:center;margin:10px 0 0}.suggestion-list{flex-direction:column;gap:10px;margin-top:14px;display:flex}.suggestion-item{background:var(--bg);border:1px solid var(--border);color:var(--text);text-align:left;border-radius:14px;padding:14px;font-weight:600;text-decoration:none}.inline-link{color:var(--primary-dark);font-weight:700}.topic-list{flex-direction:column;gap:12px;display:flex}.topic-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);color:var(--text);align-items:center;gap:14px;padding:18px;text-decoration:none;display:flex}.topic-icon{font-size:1.8rem}.topic-title{flex:1;font-size:1.1rem;font-weight:700}.topic-arrow{color:var(--primary);font-size:1.3rem}.topic-detail-icon{text-align:center;margin-bottom:6px;font-size:3rem}.step-list{flex-direction:column;gap:14px;margin:20px 0;padding:0;list-style:none;display:flex}.step-item{background:var(--surface);border:1px solid 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var(--accent));border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;width:80px;height:60px;font-size:1.5rem;display:flex}.video-info{flex-direction:column;gap:4px;display:flex}.coming-soon-tag{color:var(--accent-dark);font-size:.95rem;font-weight:700}.listen-card{justify-content:space-between}.listen-btn{background:var(--primary);color:#fff;cursor:pointer;white-space:nowrap;border:none;border-radius:999px;flex-shrink:0;min-width:48px;min-height:48px;padding:10px 18px;font-size:1rem;font-weight:700}.listen-btn:active{background:var(--primary-dark)}.filter-row{flex-wrap:wrap;gap:12px;margin:18px 0 22px;display:flex}.filter-btn{background:var(--surface);border:2px solid var(--border);min-width:96px;min-height:48px;color:var(--text);cursor:pointer;border-radius:999px;flex:auto;padding:10px 14px;font-size:.98rem;font-weight:700}.filter-btn-active{border-color:var(--primary);background:var(--primary);color:#fff}.tutorial-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);flex-direction:column;display:flex;overflow:hidden}.tutorial-thumb{background:linear-gradient(135deg, var(--primary), var(--accent));justify-content:center;align-items:center;width:100%;min-height:150px;display:flex}.tutorial-video{width:100%;max-width:100%;display:block}.tutorial-play{font-size:2.8rem}.tutorial-body{flex-direction:column;gap:10px;padding:18px;display:flex}.tutorial-head{flex-wrap:wrap;align-items:center;gap:10px 12px;display:flex}.tutorial-title{flex:auto;min-width:0;font-size:1.15rem;font-weight:800}.tutorial-device-chip{flex-shrink:0}.tutorial-desc{color:var(--muted);margin:0;font-size:1rem;line-height:1.6}.tutorial-btn-disabled{opacity:.6;cursor:not-allowed}