:root{--yt-bg-primary:#0f0f0f;--yt-bg-surface:#181818;--yt-bg-elevated:#212121;--yt-border:#ffffff1a;--yt-brand:red;--yt-brand-glow:#ff000059;--yt-text-primary:#f1f1f1;--yt-text-secondary:#aaa;--yt-hover-bg:#ffffff1a;--yt-active-bg:#ffffff2e;--yt-radius:12px;--yt-header-height:56px;--yt-sidebar-width:240px;--yt-sidebar-mini-width:72px;--font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}[data-theme=light]{--yt-bg-primary:#f9f9f9;--yt-bg-surface:#fff;--yt-bg-elevated:#f0f0f0;--yt-border:#0000001a;--yt-text-primary:#0f0f0f;--yt-text-secondary:#606060;--yt-hover-bg:#0000000d;--yt-active-bg:#0000001a}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--yt-bg-primary);color:var(--yt-text-primary);-webkit-font-smoothing:antialiased;overflow-x:hidden}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#fff3;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#ffffff59}.app-container{flex-direction:column;min-height:100vh;display:flex}.navbar{height:var(--yt-header-height);background-color:var(--yt-bg-primary);border-bottom:1px solid var(--yt-border);z-index:1000;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);justify-content:space-between;align-items:center;padding:0 16px;display:flex;position:fixed;top:0;left:0;right:0}.nav-left{align-items:center;gap:16px;display:flex}.logo-wrap{cursor:pointer;color:inherit;align-items:center;gap:6px;text-decoration:none;display:flex}.logo-text{letter-spacing:-.5px;font-size:1.15rem;font-weight:700}.nav-center{flex:1;align-items:center;gap:8px;max-width:640px;margin:0 20px;display:flex}.search-box{background-color:var(--yt-bg-surface);border:1px solid var(--yt-border);border-radius:24px;flex:1;align-items:center;transition:border-color 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14px;font-size:.8rem;font-weight:500;transition:all .2s;display:flex}.badge-btn:hover{border-color:var(--yt-brand);background-color:var(--yt-hover-bg)}.badge-dot{background-color:#2ba640;border-radius:50%;width:8px;height:8px;box-shadow:0 0 6px #2ba640}.main-wrapper{margin-top:var(--yt-header-height);min-height:calc(100vh - var(--yt-header-height));display:flex}.sidebar{width:var(--yt-sidebar-width);background-color:var(--yt-bg-primary);border-right:1px solid var(--yt-border);top:var(--yt-header-height);z-index:900;flex-direction:column;gap:4px;padding:12px 8px;transition:width .2s;display:flex;position:fixed;bottom:0;left:0;overflow-y:auto}.sidebar.collapsed{width:var(--yt-sidebar-mini-width)}.sidebar-item{color:var(--yt-text-primary);cursor:pointer;border-radius:10px;align-items:center;gap:16px;padding:10px 14px;font-size:.9rem;font-weight:500;text-decoration:none;transition:background-color 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var(--yt-border);border-radius:16px;width:100%;max-width:520px;padding:24px;box-shadow:0 20px 50px #0009}.modal-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.modal-header h2{font-size:1.25rem;font-weight:700}.pref-radio{border:1px solid var(--yt-border);cursor:pointer;border-radius:10px;align-items:flex-start;gap:12px;margin-bottom:10px;padding:12px 14px;transition:all .15s;display:flex}.pref-radio:hover{background-color:var(--yt-hover-bg);border-color:#ffffff4d}.pref-radio input[type=radio]{accent-color:var(--yt-brand);width:18px;height:18px;margin-top:3px}.pref-radio strong{margin-bottom:3px;font-size:.95rem;display:block}.pref-radio small{color:var(--yt-text-secondary);font-size:.8rem;line-height:1.4}.btn-primary{background-color:var(--yt-brand);color:#fff;cursor:pointer;border:none;border-radius:20px;padding:10px 24px;font-weight:600;transition:opacity 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