:root{--sphere-blue-50: #eff4fe;--sphere-blue-100: #dee8fd;--sphere-blue-500: #1f65f0;--sphere-blue-600: #0e4ecc;--sphere-blue-700: #0b3c9d;--sphere-neutral-0: #ffffff;--sphere-neutral-50: #f8f9fa;--sphere-neutral-100: #f0f2f5;--sphere-neutral-200: #e0e4eb;--sphere-neutral-300: #c2c9d6;--sphere-neutral-500: #8592ad;--sphere-neutral-600: #667799;--sphere-neutral-700: #525f7a;--sphere-neutral-900: #29303d;--sphere-neutral-999: #15191f;--sphere-green-500: #17de6f;--sphere-green-600: #12b058;--sphere-green-700: #0d8040;--sphere-red-500: #e50505;--sphere-orange-400: #ff731e;--sphere-orange-500: #f26005;--sphere-yellow-600: #cc9200;--bg: var(--sphere-neutral-50);--surface: var(--sphere-neutral-0);--surface-alt: var(--sphere-neutral-100);--border: var(--sphere-neutral-200);--border-strong: var(--sphere-neutral-300);--text: var(--sphere-neutral-999);--text-secondary: var(--sphere-neutral-700);--text-muted: var(--sphere-neutral-500);--primary: var(--sphere-blue-500);--primary-hover: var(--sphere-blue-600);--primary-active: var(--sphere-blue-700);--primary-contrast: #ffffff;--success: var(--sphere-green-600);--error: var(--sphere-red-500);--warning: var(--sphere-yellow-600);--radius-sm: 6px;--radius: 8px;--radius-lg: 12px;--shadow-card: 0 1px 2px rgba(21, 25, 31, .06), 0 4px 12px rgba(21, 25, 31, .08);--shadow-modal: 0 12px 40px rgba(21, 25, 31, .22);--focus-ring: 0 0 0 3px rgba(31, 101, 240, .25);color-scheme:light;font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color:var(--text);background-color:var(--bg);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:320px;min-height:100vh;padding:2rem 1rem;box-sizing:border-box;background-color:var(--bg);color:var(--text)}#app{width:100%;max-width:34rem;margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:1.5rem;text-align:center}.app-header{display:flex;flex-direction:column;align-items:center;gap:.5rem}.app-logo{height:2.75rem;width:auto}.app-header h1{margin:0;font-size:1.75rem;font-weight:600;letter-spacing:-.01em;color:var(--text)}.app-tagline{margin:0;font-size:.95rem;color:var(--text-secondary);max-width:28rem}.card{width:100%;box-sizing:border-box;padding:1.75rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card)}button{border-radius:var(--radius);border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:600;font-family:inherit;background-color:var(--primary);color:var(--primary-contrast);cursor:pointer;transition:background-color .2s ease,box-shadow .2s ease,border-color .2s ease}button:hover{background-color:var(--primary-hover)}button:active{background-color:var(--primary-active)}button:focus-visible{outline:none;box-shadow:var(--focus-ring)}button:disabled{opacity:.55;cursor:not-allowed}input[type=text],input[type=password]{background-color:var(--surface);color:var(--text);border:1px solid var(--border-strong);border-radius:var(--radius-sm)}input[type=text]::placeholder,input[type=password]::placeholder{color:var(--text-muted)}input[type=text]:focus,input[type=password]:focus{outline:none;border-color:var(--primary);box-shadow:var(--focus-ring)}label{color:var(--text-secondary)}.input-group{width:100%;box-sizing:border-box;text-align:left}.input-group label{display:block;margin-bottom:.5rem;font-size:.85rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted)}.input-group input{width:100%;box-sizing:border-box;padding:.65rem .75rem;font-size:.9rem}#app.deep-link #url-group label,#app.deep-link #url-group input,#app.deep-link #url-group #help-text{display:none!important}#app.deep-link #url-group{text-align:center}.hidden{display:none!important}.validation-message{font-size:.8rem;margin-top:.5rem;min-height:1.2em;color:var(--text-secondary)}.validation-message.valid{color:var(--success);font-weight:600}.validation-message.invalid{color:var(--error)}.input-hint{font-size:.8rem;color:var(--text-muted);margin:.75rem 0 0;text-align:left;line-height:1.6}.input-hint code{background:var(--surface-alt);border:1px solid var(--border);border-radius:4px;padding:.05em .35em;font-size:.9em}#download-section{margin-top:1.25rem}.project-info{font-size:.8rem;color:var(--text-secondary);margin-bottom:.75rem;word-break:break-all}#startDownload{padding:.75em 1.5em;font-size:1.05em;animation:fadeIn .3s ease-out}.advanced-toggle{display:block;margin:1rem auto 0;padding:.25rem .5rem;background:none;border:none;box-shadow:none;color:var(--text-muted);font-size:.8rem;cursor:pointer}.advanced-toggle:hover{color:var(--primary);background:none}.advanced-toggle:before{content:"▸ "}.advanced-toggle[aria-expanded=true]:before{content:"▾ "}.advanced-settings{margin-top:.75rem;padding:1rem;background:var(--surface-alt);border:1px solid var(--border);border-radius:var(--radius-sm);text-align:left;animation:fadeIn .2s ease-out}.advanced-option{margin-top:1rem;padding-top:1rem;border-top:1px solid var(--border)}.checkbox-row{display:flex;align-items:center;gap:.5rem;font-size:.9rem;cursor:pointer}.checkbox-row input[type=checkbox]{width:auto;margin:0;cursor:pointer}.alpha-warning{margin:.5rem 0 0;padding:.5rem .65rem;font-size:.78rem;line-height:1.5;color:#7a4a06;background:#fff4e5;border:1px solid #ffd9a8;border-left:3px solid var(--warning, #f26005);border-radius:var(--radius-sm)}.browser-warning{margin-bottom:1rem;padding:.75rem 1rem;color:#7a1f1f;background:#ffebeb;border:1px solid #fdb9b9;border-left:4px solid var(--error);border-radius:var(--radius-sm);font-size:.85rem;line-height:1.5;text-align:left}.browser-warning a{color:var(--primary-hover)}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}@keyframes fadeIn{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.modal-overlay{position:fixed;inset:0;background:#15191f8c;display:flex;align-items:center;justify-content:center;z-index:1000}.modal-content{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.5rem;max-width:500px;width:90%;max-height:80vh;overflow-y:auto;box-shadow:var(--shadow-modal);text-align:left}.modal-content h2{margin:0 0 .5rem;color:var(--text)}.modal-subtitle{color:var(--text-secondary);margin:0 0 1.25rem;font-size:.9rem}.options-grid{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1.25rem}.option-row{display:flex;align-items:center;padding:.625rem .75rem;background:var(--surface-alt);border:1px solid transparent;border-radius:var(--radius);cursor:pointer;transition:background .15s ease,border-color .15s ease}.option-row:hover{background:var(--sphere-blue-50);border-color:var(--sphere-blue-100)}.option-row input{margin-right:.75rem;width:18px;height:18px;accent-color:var(--primary);cursor:pointer}.option-label{flex:1;color:var(--text)}.option-count{color:var(--text-muted);font-size:.8rem}.size-summary{background:var(--surface-alt);border-radius:var(--radius);padding:1rem;margin-bottom:1.25rem}.size-row{display:flex;justify-content:space-between;padding:.25rem 0;color:var(--text-secondary)}.size-total{border-top:1px solid var(--border);margin-top:.5rem;padding-top:.75rem;font-weight:700;font-size:1rem;color:var(--text)}.size-warnings{margin-top:.75rem;font-size:.8rem;color:var(--sphere-orange-500)}.modal-buttons{display:flex;gap:.75rem;justify-content:flex-end}.btn-primary,.btn-secondary{padding:.625rem 1.25rem;border-radius:var(--radius-sm);font-size:.9rem;font-weight:600;cursor:pointer;border:1px solid transparent}.btn-primary{background:var(--primary);color:var(--primary-contrast)}.btn-primary:hover{background:var(--primary-hover)}.btn-primary:active{background:var(--primary-active)}.btn-primary:disabled{background:var(--border-strong);cursor:not-allowed}.btn-secondary{background:var(--surface);color:var(--text-secondary);border-color:var(--border-strong)}.btn-secondary:hover{background:var(--surface-alt)}#progress-container{width:100%;box-sizing:border-box;margin:0 auto;padding:1.25rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);text-align:left;animation:fadeIn .3s ease-out}#progress-phase{font-weight:600;margin-bottom:.75rem;color:var(--text)}.progress-track{width:100%;height:1.25rem;background:var(--surface-alt);border-radius:999px;overflow:hidden}#progress-bar{background:linear-gradient(90deg,var(--primary),var(--sphere-blue-600));height:100%;width:0%;border-radius:999px;transition:width .3s ease;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}#progress-bar.downloading:after{content:"";position:absolute;inset:0;background-image:linear-gradient(-45deg,rgba(255,255,255,.28) 25%,transparent 25%,transparent 50%,rgba(255,255,255,.28) 50%,rgba(255,255,255,.28) 75%,transparent 75%,transparent);background-size:1.5rem 1.5rem;animation:progress-stripes .9s linear infinite;z-index:0}@keyframes progress-stripes{0%{background-position:0 0}to{background-position:1.5rem 0}}#progress-percent{color:#fff;font-size:.7rem;font-weight:700;text-shadow:0 0 2px rgba(0,0,0,.35);position:relative;z-index:1}#progress-detail{margin-top:.75rem;font-size:.85rem;color:var(--text-secondary)}.resume-hint{margin-top:.75rem;padding:.5rem .75rem;color:var(--primary-hover);font-size:.8rem;border-left:3px solid var(--primary);background:var(--sphere-blue-50);border-radius:0 var(--radius-sm) var(--radius-sm) 0}#download-complete-section{width:100%}.success-card,.incomplete-card{background:var(--surface);border:1px solid var(--border);border-top:3px solid var(--success);border-radius:var(--radius-lg);padding:1.75rem;text-align:left;box-shadow:var(--shadow-card)}.success-card h2,.incomplete-card h2{color:var(--sphere-green-700);margin-top:0;text-align:center}.incomplete-card{border-top-color:var(--warning)}.incomplete-card h2{color:var(--warning)}.success-message{text-align:center;color:var(--text-secondary);margin-bottom:1.5rem}.instructions{background:var(--surface-alt);border-radius:var(--radius);padding:1rem 1.5rem;margin-bottom:1.5rem}.instructions h3{margin-top:0;color:var(--primary-hover);font-size:1rem}.instructions ul{margin:0;padding-left:1.2rem}.instructions li{margin-bottom:.5rem;color:var(--text-secondary)}.instructions li strong{color:var(--text)}.action-buttons{display:flex;gap:1rem;justify-content:center}.action-buttons .btn-primary{font-size:1.05rem;padding:.75em 1.5em}.build-version{position:fixed;bottom:4px;right:8px;font-size:.7rem;color:var(--text-muted);opacity:.7;z-index:1}.auth-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;width:100%;min-height:100vh;padding:2rem;box-sizing:border-box;text-align:center}.auth-screen h2{margin:0;color:var(--text)}.auth-screen p{margin:0;max-width:32rem;color:var(--text-secondary)}.auth-spinner{width:2.5rem;height:2.5rem;border:4px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:auth-spin .8s linear infinite}@keyframes auth-spin{to{transform:rotate(360deg)}}