:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#aa3bff;--accent-bg:#aa3bff1a;--accent-border:#aa3bff80;--social-bg:#f4f3ec80;--shadow:#0000001a 0 10px 15px -3px, #0000000d 0 4px 6px -2px;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}@media (width<=1024px){:root{font-size:16px}}@media (prefers-color-scheme:dark){:root{--text:#9ca3af;--text-h:#f3f4f6;--bg:#16171d;--border:#2e303a;--code-bg:#1f2028;--accent:#c084fc;--accent-bg:#c084fc26;--accent-border:#c084fc80;--social-bg:#2f303a80;--shadow:#0006 0 10px 15px -3px, #00000040 0 4px 6px -2px}#social .button-icon{filter:invert()brightness(2)}}body{margin:0}#root{text-align:center;border-inline:1px solid var(--border);box-sizing:border-box;flex-direction:column;width:1126px;max-width:100%;min-height:100svh;margin:0 auto;display:flex}h1,h2{font-family:var(--heading);color:var(--text-h);font-weight:500}h1{letter-spacing:-1.68px;margin:32px 0;font-size:56px}@media (width<=1024px){h1{margin:20px 0;font-size:36px}}h2{letter-spacing:-.24px;margin:0 0 8px;font-size:24px;line-height:118%}@media (width<=1024px){h2{font-size:20px}}p{margin:0}code,.counter{font-family:var(--mono);color:var(--text-h);border-radius:4px;display:inline-flex}code{background:var(--code-bg);padding:4px 8px;font-size:15px;line-height:135%}:root{--toastify-color-light:#fff;--toastify-color-dark:#121212;--toastify-color-info:#3498db;--toastify-color-success:#07bc0c;--toastify-color-warning:#f1c40f;--toastify-color-error:#e74d3c;--toastify-color-transparent:#ffffffb3;--toastify-icon-color-info:var(--toastify-color-info);--toastify-icon-color-success:var(--toastify-color-success);--toastify-icon-color-warning:var(--toastify-color-warning);--toastify-icon-color-error:var(--toastify-color-error);--toastify-container-width:fit-content;--toastify-toast-width:320px;--toastify-toast-offset:16px;--toastify-toast-top:max(var(--toastify-toast-offset), env(safe-area-inset-top));--toastify-toast-right:max(var(--toastify-toast-offset), env(safe-area-inset-right));--toastify-toast-left:max(var(--toastify-toast-offset), env(safe-area-inset-left));--toastify-toast-bottom:max(var(--toastify-toast-offset), env(safe-area-inset-bottom));--toastify-toast-background:#fff;--toastify-toast-padding:14px;--toastify-toast-min-height:64px;--toastify-toast-max-height:800px;--toastify-toast-bd-radius:6px;--toastify-toast-shadow:0px 4px 12px #0000001a;--toastify-font-family:sans-serif;--toastify-z-index:9999;--toastify-text-color-light:#757575;--toastify-text-color-dark:#fff;--toastify-text-color-info:#fff;--toastify-text-color-success:#fff;--toastify-text-color-warning:#fff;--toastify-text-color-error:#fff;--toastify-spinner-color:#616161;--toastify-spinner-color-empty-area:#e0e0e0;--toastify-color-progress-light:linear-gradient(to right, #4cd964, #5ac8fa, #007aff, #34aadc, #5856d6, #ff2d55);--toastify-color-progress-dark:#bb86fc;--toastify-color-progress-info:var(--toastify-color-info);--toastify-color-progress-success:var(--toastify-color-success);--toastify-color-progress-warning:var(--toastify-color-warning);--toastify-color-progress-error:var(--toastify-color-error);--toastify-color-progress-bgo:.2}.Toastify__toast-container{z-index:var(--toastify-z-index);-webkit-transform:translate3d(0, 0, var(--toastify-z-index));width:var(--toastify-container-width);box-sizing:border-box;color:#fff;flex-direction:column;display:flex;position:fixed}.Toastify__toast-container--top-left{top:var(--toastify-toast-top);left:var(--toastify-toast-left)}.Toastify__toast-container--top-center{top:var(--toastify-toast-top);align-items:center;left:50%;transform:translate(-50%)}.Toastify__toast-container--top-right{top:var(--toastify-toast-top);right:var(--toastify-toast-right);align-items:end}.Toastify__toast-container--bottom-left{bottom:var(--toastify-toast-bottom);left:var(--toastify-toast-left)}.Toastify__toast-container--bottom-center{bottom:var(--toastify-toast-bottom);align-items:center;left:50%;transform:translate(-50%)}.Toastify__toast-container--bottom-right{bottom:var(--toastify-toast-bottom);right:var(--toastify-toast-right);align-items:end}.Toastify__toast{--y:0px;touch-action:none;width:var(--toastify-toast-width);min-height:var(--toastify-toast-min-height);box-sizing:border-box;padding:var(--toastify-toast-padding);border-radius:var(--toastify-toast-bd-radius);box-shadow:var(--toastify-toast-shadow);max-height:var(--toastify-toast-max-height);font-family:var(--toastify-font-family);z-index:0;word-break:break-word;flex:auto;align-items:center;margin-bottom:1rem;display:flex;position:relative}@media only screen and (width<=480px){.Toastify__toast-container{width:100vw;left:env(safe-area-inset-left);margin:0}.Toastify__toast-container--top-left,.Toastify__toast-container--top-center,.Toastify__toast-container--top-right{top:env(safe-area-inset-top);transform:translate(0)}.Toastify__toast-container--bottom-left,.Toastify__toast-container--bottom-center,.Toastify__toast-container--bottom-right{bottom:env(safe-area-inset-bottom);transform:translate(0)}.Toastify__toast-container--rtl{right:env(safe-area-inset-right);left:initial}.Toastify__toast{--toastify-toast-width:100%;border-radius:0;margin-bottom:0}}.Toastify__toast-container[data-stacked=true]{width:var(--toastify-toast-width)}@media only screen and (width<=480px){.Toastify__toast-container[data-stacked=true]{width:100vw}}.Toastify__toast--stacked{width:100%;transform:translate3d(0, var(--y), 0) scale(var(--s));transition:transform .3s;position:absolute}.Toastify__toast--stacked[data-collapsed] .Toastify__toast-body,.Toastify__toast--stacked[data-collapsed] .Toastify__close-button{transition:opacity .1s}.Toastify__toast--stacked[data-collapsed=false]{overflow:visible}.Toastify__toast--stacked[data-collapsed=true]:not(:last-child)>*{opacity:0}.Toastify__toast--stacked:after{content:"";height:calc(var(--g) * 1px);position:absolute;bottom:100%;left:0;right:0}.Toastify__toast--stacked[data-pos=top]{top:0}.Toastify__toast--stacked[data-pos=bot]{bottom:0}.Toastify__toast--stacked[data-pos=bot].Toastify__toast--stacked:before{transform-origin:top}.Toastify__toast--stacked[data-pos=top].Toastify__toast--stacked:before{transform-origin:bottom}.Toastify__toast--stacked:before{content:"";z-index:-1;height:100%;position:absolute;bottom:0;left:0;right:0;transform:scaleY(3)}.Toastify__toast--rtl{direction:rtl}.Toastify__toast--close-on-click{cursor:pointer}.Toastify__toast-icon{flex-shrink:0;width:22px;margin-inline-end:10px;display:flex}.Toastify--animate{animation-duration:.5s;animation-fill-mode:both}.Toastify--animate-icon{animation-duration:.3s;animation-fill-mode:both}.Toastify__toast-theme--dark{background:var(--toastify-color-dark);color:var(--toastify-text-color-dark)}.Toastify__toast-theme--light,.Toastify__toast-theme--colored.Toastify__toast--default{background:var(--toastify-color-light);color:var(--toastify-text-color-light)}.Toastify__toast-theme--colored.Toastify__toast--info{color:var(--toastify-text-color-info);background:var(--toastify-color-info)}.Toastify__toast-theme--colored.Toastify__toast--success{color:var(--toastify-text-color-success);background:var(--toastify-color-success)}.Toastify__toast-theme--colored.Toastify__toast--warning{color:var(--toastify-text-color-warning);background:var(--toastify-color-warning)}.Toastify__toast-theme--colored.Toastify__toast--error{color:var(--toastify-text-color-error);background:var(--toastify-color-error)}.Toastify__progress-bar-theme--light{background:var(--toastify-color-progress-light)}.Toastify__progress-bar-theme--dark{background:var(--toastify-color-progress-dark)}.Toastify__progress-bar--info{background:var(--toastify-color-progress-info)}.Toastify__progress-bar--success{background:var(--toastify-color-progress-success)}.Toastify__progress-bar--warning{background:var(--toastify-color-progress-warning)}.Toastify__progress-bar--error{background:var(--toastify-color-progress-error)}.Toastify__progress-bar-theme--colored.Toastify__progress-bar--info,.Toastify__progress-bar-theme--colored.Toastify__progress-bar--success,.Toastify__progress-bar-theme--colored.Toastify__progress-bar--warning,.Toastify__progress-bar-theme--colored.Toastify__progress-bar--error{background:var(--toastify-color-transparent)}.Toastify__close-button{color:#fff;cursor:pointer;opacity:.7;z-index:1;background:0 0;border:none;outline:none;padding:0;transition:all .3s;position:absolute;top:6px;right:6px}.Toastify__toast--rtl .Toastify__close-button{left:6px;right:unset}.Toastify__close-button--light{color:#000;opacity:.3}.Toastify__close-button>svg{fill:currentColor;width:14px;height:16px}.Toastify__close-button:hover,.Toastify__close-button:focus{opacity:1}@keyframes Toastify__trackProgress{0%{transform:scaleX(1)}to{transform:scaleX(0)}}.Toastify__progress-bar{z-index:1;opacity:.7;transform-origin:0;width:100%;height:100%;position:absolute;bottom:0;left:0}.Toastify__progress-bar--animated{animation:linear forwards Toastify__trackProgress}.Toastify__progress-bar--controlled{transition:transform .2s}.Toastify__progress-bar--rtl{right:0;left:initial;transform-origin:100%;border-bottom-left-radius:initial}.Toastify__progress-bar--wrp{border-bottom-left-radius:var(--toastify-toast-bd-radius);border-bottom-right-radius:var(--toastify-toast-bd-radius);width:100%;height:5px;position:absolute;bottom:0;left:0;overflow:hidden}.Toastify__progress-bar--wrp[data-hidden=true]{opacity:0}.Toastify__progress-bar--bg{opacity:var(--toastify-color-progress-bgo);width:100%;height:100%}.Toastify__spinner{box-sizing:border-box;border:2px solid;border-color:var(--toastify-spinner-color-empty-area);border-right-color:var(--toastify-spinner-color);border-radius:100%;width:20px;height:20px;animation:.65s linear infinite Toastify__spin}@keyframes Toastify__bounceInRight{0%,60%,75%,90%,to{animation-timing-function:cubic-bezier(.215,.61,.355,1)}0%{opacity:0;transform:translate(3000px)}60%{opacity:1;transform:translate(-25px)}75%{transform:translate(10px)}90%{transform:translate(-5px)}to{transform:none}}@keyframes Toastify__bounceOutRight{20%{opacity:1;transform:translate3d(-20px, var(--y), 0)}to{opacity:0;transform:translate3d(2000px, var(--y), 0)}}@keyframes Toastify__bounceInLeft{0%,60%,75%,90%,to{animation-timing-function:cubic-bezier(.215,.61,.355,1)}0%{opacity:0;transform:translate(-3000px)}60%{opacity:1;transform:translate(25px)}75%{transform:translate(-10px)}90%{transform:translate(5px)}to{transform:none}}@keyframes Toastify__bounceOutLeft{20%{opacity:1;transform:translate3d(20px, var(--y), 0)}to{opacity:0;transform:translate3d(-2000px, var(--y), 0)}}@keyframes Toastify__bounceInUp{0%,60%,75%,90%,to{animation-timing-function:cubic-bezier(.215,.61,.355,1)}0%{opacity:0;transform:translateY(3000px)}60%{opacity:1;transform:translateY(-20px)}75%{transform:translateY(10px)}90%{transform:translateY(-5px)}to{transform:translate(0,0)}}@keyframes Toastify__bounceOutUp{20%{transform:translate3d(0, calc(var(--y) - 10px), 0)}40%,45%{opacity:1;transform:translate3d(0, calc(var(--y) + 20px), 0)}to{opacity:0;transform:translateY(-2000px)}}@keyframes Toastify__bounceInDown{0%,60%,75%,90%,to{animation-timing-function:cubic-bezier(.215,.61,.355,1)}0%{opacity:0;transform:translateY(-3000px)}60%{opacity:1;transform:translateY(25px)}75%{transform:translateY(-10px)}90%{transform:translateY(5px)}to{transform:none}}@keyframes Toastify__bounceOutDown{20%{transform:translate3d(0, calc(var(--y) - 10px), 0)}40%,45%{opacity:1;transform:translate3d(0, calc(var(--y) + 20px), 0)}to{opacity:0;transform:translateY(2000px)}}.Toastify__bounce-enter--top-left,.Toastify__bounce-enter--bottom-left{animation-name:Toastify__bounceInLeft}.Toastify__bounce-enter--top-right,.Toastify__bounce-enter--bottom-right{animation-name:Toastify__bounceInRight}.Toastify__bounce-enter--top-center{animation-name:Toastify__bounceInDown}.Toastify__bounce-enter--bottom-center{animation-name:Toastify__bounceInUp}.Toastify__bounce-exit--top-left,.Toastify__bounce-exit--bottom-left{animation-name:Toastify__bounceOutLeft}.Toastify__bounce-exit--top-right,.Toastify__bounce-exit--bottom-right{animation-name:Toastify__bounceOutRight}.Toastify__bounce-exit--top-center{animation-name:Toastify__bounceOutUp}.Toastify__bounce-exit--bottom-center{animation-name:Toastify__bounceOutDown}@keyframes Toastify__zoomIn{0%{opacity:0;transform:scale3d(.3,.3,.3)}50%{opacity:1}}@keyframes Toastify__zoomOut{0%{opacity:1}50%{opacity:0;transform:translate3d(0, var(--y), 0) scale3d(.3, .3, .3)}to{opacity:0}}.Toastify__zoom-enter{animation-name:Toastify__zoomIn}.Toastify__zoom-exit{animation-name:Toastify__zoomOut}@keyframes Toastify__flipIn{0%{opacity:0;animation-timing-function:ease-in;transform:perspective(400px)rotateX(90deg)}40%{animation-timing-function:ease-in;transform:perspective(400px)rotateX(-20deg)}60%{opacity:1;transform:perspective(400px)rotateX(10deg)}80%{transform:perspective(400px)rotateX(-5deg)}to{transform:perspective(400px)}}@keyframes Toastify__flipOut{0%{transform:translate3d(0, var(--y), 0) perspective(400px)}30%{transform:translate3d(0, var(--y), 0) perspective(400px) rotate3d(1, 0, 0, -20deg);opacity:1}to{transform:translate3d(0, var(--y), 0) perspective(400px) rotate3d(1, 0, 0, 90deg);opacity:0}}.Toastify__flip-enter{animation-name:Toastify__flipIn}.Toastify__flip-exit{animation-name:Toastify__flipOut}@keyframes Toastify__slideInRight{0%{visibility:visible;transform:translate(110%)}to{transform:translate3d(0, var(--y), 0)}}@keyframes Toastify__slideInLeft{0%{visibility:visible;transform:translate(-110%)}to{transform:translate3d(0, var(--y), 0)}}@keyframes Toastify__slideInUp{0%{visibility:visible;transform:translateY(110%)}to{transform:translate3d(0, var(--y), 0)}}@keyframes Toastify__slideInDown{0%{visibility:visible;transform:translateY(-110%)}to{transform:translate3d(0, var(--y), 0)}}@keyframes Toastify__slideOutRight{0%{transform:translate3d(0, var(--y), 0)}to{visibility:hidden;transform:translate3d(110%, var(--y), 0)}}@keyframes Toastify__slideOutLeft{0%{transform:translate3d(0, var(--y), 0)}to{visibility:hidden;transform:translate3d(-110%, var(--y), 0)}}@keyframes Toastify__slideOutDown{0%{transform:translate3d(0, var(--y), 0)}to{visibility:hidden;transform:translateY(500px)}}@keyframes Toastify__slideOutUp{0%{transform:translate3d(0, var(--y), 0)}to{visibility:hidden;transform:translateY(-500px)}}.Toastify__slide-enter--top-left,.Toastify__slide-enter--bottom-left{animation-name:Toastify__slideInLeft}.Toastify__slide-enter--top-right,.Toastify__slide-enter--bottom-right{animation-name:Toastify__slideInRight}.Toastify__slide-enter--top-center{animation-name:Toastify__slideInDown}.Toastify__slide-enter--bottom-center{animation-name:Toastify__slideInUp}.Toastify__slide-exit--top-left,.Toastify__slide-exit--bottom-left{animation-name:Toastify__slideOutLeft;animation-duration:.3s;animation-timing-function:ease-in}.Toastify__slide-exit--top-right,.Toastify__slide-exit--bottom-right{animation-name:Toastify__slideOutRight;animation-duration:.3s;animation-timing-function:ease-in}.Toastify__slide-exit--top-center{animation-name:Toastify__slideOutUp;animation-duration:.3s;animation-timing-function:ease-in}.Toastify__slide-exit--bottom-center{animation-name:Toastify__slideOutDown;animation-duration:.3s;animation-timing-function:ease-in}@keyframes Toastify__spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.detail-page{background-color:var(--bg-color);min-height:100vh;color:var(--text-color);transition:background-color .3s,color .3s}.node-detail-container{max-width:920px;margin:0 auto;padding:28px 24px 60px;font-family:sans-serif}.btn-back{background:var(--box-bg);color:var(--text-light);border:1px solid var(--line-color);cursor:pointer;border-radius:7px;align-items:center;gap:7px;margin-bottom:20px;padding:8px 16px;font-size:14px;transition:all .18s;display:inline-flex;box-shadow:0 2px 6px #0000000f}.btn-back:hover{background:var(--primary);color:#fff;border-color:var(--primary)}.breadcrumb{background:var(--box-bg);border:1px solid var(--line-color);border-radius:7px;flex-wrap:wrap;align-items:center;gap:4px;margin-bottom:22px;padding:9px 14px;font-size:13px;display:flex}.breadcrumb-item{align-items:center;gap:4px;display:flex}.breadcrumb-link{color:var(--primary);cursor:pointer;font-size:inherit;background:0 0;border:none;padding:0;transition:color .15s}.breadcrumb-link:hover{text-decoration:underline}.breadcrumb-separator{color:var(--line-color)}.breadcrumb-current{color:var(--text-color);font-weight:600}.node-detail-content{background:var(--box-bg);border:1px solid var(--line-color);border-radius:12px;padding:40px 44px;box-shadow:0 4px 24px #00000012}.detail-title-row{border-bottom:2px solid var(--line-color);justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:32px;padding-bottom:24px;display:flex}.detail-title{color:var(--text-color);flex:1;margin:0;font-size:30px;font-weight:700;line-height:1.25}.detail-title-actions{flex-direction:column;flex-shrink:0;align-items:flex-end;gap:8px;display:flex}.detail-child-badge{color:var(--primary);white-space:nowrap;background:#2563eb1a;border:1px solid #2563eb38;border-radius:20px;padding:4px 12px;font-size:12px;font-weight:600}.detail-complete-btn{border:1px solid var(--line-color);color:var(--text-light);cursor:pointer;background:0 0;border-radius:20px;align-items:center;gap:6px;padding:6px 14px;font-family:inherit;font-size:13px;font-weight:500;transition:all .2s;display:inline-flex}.detail-complete-btn:hover{color:#10b981;background:#10b98114;border-color:#10b981}.detail-complete-done{color:#10b981!important;background:#10b9811a!important;border-color:#10b981!important}.detail-section{margin-bottom:36px}.section-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.section-header h3{letter-spacing:1.8px;text-transform:uppercase;color:var(--text-light);margin:0;font-size:11px;font-weight:700}.btn-edit-desc{color:var(--text-light);cursor:pointer;background:0 0;border:none;border-radius:5px;align-items:center;padding:5px;transition:all .15s;display:flex}.btn-edit-desc:hover{background:var(--primary);color:#fff}.edit-desc-container{flex-direction:column;gap:10px;display:flex}.edit-desc-container textarea{background:var(--bg-color);color:var(--text-color);border:1px solid var(--line-color);resize:vertical;border-radius:8px;min-height:420px;padding:14px;font-family:Consolas,monospace;font-size:13px;line-height:1.55;transition:border-color .2s}.edit-desc-container textarea:focus{border-color:var(--primary);outline:none;box-shadow:0 0 0 3px #2563eb1a}.edit-actions{gap:8px;display:flex}.btn-save,.btn-cancel{cursor:pointer;border:1px solid;border-radius:7px;align-items:center;gap:6px;padding:8px 16px;font-size:13px;font-weight:500;transition:all .15s;display:flex}.btn-save{color:var(--success);border-color:var(--success);background:#27ae601a}.btn-save:hover{background:var(--success);color:#fff}.btn-cancel{color:var(--danger);border-color:var(--danger);background:#e74c3c1a}.btn-cancel:hover{background:var(--danger);color:#fff}.desc-body{color:var(--text-color);font-size:15px;line-height:1.72}.desc-spacer{height:6px}.desc-divider{align-items:center;gap:12px;margin:26px 0 14px;display:flex}.desc-divider:before,.desc-divider:after{content:"";background:var(--line-color);flex:1;height:1px}.desc-divider-label{letter-spacing:1.6px;text-transform:uppercase;color:var(--primary);white-space:nowrap;font-size:11px;font-weight:700}.desc-section-heading{letter-spacing:1.5px;text-transform:uppercase;color:var(--text-light);border-bottom:1px solid var(--line-color);margin:22px 0 8px;padding-bottom:5px;font-size:12px;font-weight:700}.desc-code{border:1px solid var(--line-color);border-left:3px solid var(--primary);white-space:pre;color:var(--text-color);background:#0f172a0d;border-radius:8px;margin:10px 0;padding:14px 18px;font-family:Cascadia Code,Fira Code,Consolas,Courier New,monospace;font-size:13px;line-height:1.55;overflow-x:auto}.detail-page.dark .desc-code{background:#ffffff0d;border-left-color:#60a5fa}.desc-bullets{margin:6px 0;padding:0;list-style:none}.desc-bullets li{color:var(--text-color);padding:3px 0 3px 22px;font-size:15px;line-height:1.65;position:relative}.desc-bullets li:before{content:"›";color:var(--primary);font-size:16px;font-weight:700;position:absolute;top:3px;left:5px}.desc-bullets li.bullet-check:before{content:"✓";color:#16a34a;font-size:14px}.desc-bullets li.bullet-cross:before{content:"✗";color:#dc2626;font-size:14px}.desc-ref-line{background:#2563eb0a;border:1px solid #2563eb1a;border-radius:7px;flex-wrap:wrap;align-items:center;gap:8px;margin:5px 0;padding:8px 14px;font-size:14px;line-height:1.5;display:flex}.detail-page.dark .desc-ref-line{background:#60a5fa0f;border-color:#60a5fa26}.desc-para{color:var(--text-color);margin:3px 0;font-size:15px;line-height:1.72}.desc-link{vertical-align:middle;border:1px solid #0000;border-radius:5px;align-items:center;gap:4px;padding:2px 9px;font-size:12.5px;font-weight:600;text-decoration:none;transition:all .15s;display:inline-flex}.link-yt{color:#dc2626;background:#dc262614;border-color:#dc262638}.link-yt:hover{color:#fff;background:#dc2626;border-color:#dc2626}.link-arxiv{color:#b45309;background:#b43c1414;border-color:#b43c1438}.link-arxiv:hover{color:#fff;background:#b45309}.link-hf{color:#d97706;background:#fbbf241a;border-color:#fbbf2447}.link-hf:hover{color:#fff;background:#d97706}.link-gh{color:var(--text-color);background:#0f172a12;border-color:#0f172a2e}.link-gh:hover{background:var(--text-color);color:var(--bg-color)}.detail-page.dark .link-gh{background:#ffffff12;border-color:#ffffff2e}.link-ext{color:var(--primary);background:#2563eb12;border-color:#2563eb33}.link-ext:hover{background:var(--primary);color:#fff}.subtopics-section h3{margin-bottom:14px}.children-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;display:grid}.child-card{background:var(--bg-color);border:1px solid var(--line-color);cursor:pointer;text-align:left;border-radius:9px;flex-direction:column;align-items:flex-start;gap:4px;padding:14px 16px;transition:all .18s;display:flex;position:relative;overflow:hidden}.child-card:before{content:"";background:linear-gradient(135deg, var(--primary), #14b8a6);opacity:0;transition:opacity .18s;position:absolute;inset:0}.child-card:hover:before{opacity:.06}.child-card:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:0 6px 18px #2563eb1f}.child-card-name{color:var(--text-color);z-index:1;font-size:14px;font-weight:600;line-height:1.35}.child-card-count{color:var(--text-light);z-index:1;font-size:11.5px}.child-card-arrow{color:var(--primary);opacity:0;font-size:16px;transition:opacity .15s,right .15s;position:absolute;top:50%;right:14px;transform:translateY(-50%)}.child-card:hover .child-card-arrow{opacity:1;right:12px}.timer-section .section-header h3{align-items:center;gap:6px;display:flex}.timer-row{background:var(--bg-color);border:1px solid var(--line-color);border-radius:10px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:14px 18px;display:flex}.timer-total{align-items:center;gap:8px;display:flex}.timer-total-label{color:var(--text-light);font-size:13px}.timer-total-val{color:var(--text-color);font-variant-numeric:tabular-nums;font-size:18px;font-weight:800}.timer-session{align-items:center;gap:10px;display:flex}.timer-live{color:#10b981;font-variant-numeric:tabular-nums;font-size:16px;font-weight:700;animation:1.4s ease-in-out infinite pulse-green}@keyframes pulse-green{0%,to{opacity:1}50%{opacity:.6}}.timer-btn{border:1.5px solid var(--line-color);background:var(--bg-color);color:var(--text-color);cursor:pointer;border-radius:8px;align-items:center;gap:6px;padding:8px 16px;font-family:inherit;font-size:13px;font-weight:600;transition:all .18s;display:flex}.timer-btn:hover{color:#10b981;background:#10b98114;border-color:#10b981}.timer-btn-pause{color:#ef4444;background:#ef44440f;border-color:#ef4444}.timer-btn-pause:hover{color:#fff;background:#ef4444;border-color:#ef4444}.no-children{color:var(--text-light);font-size:14px;font-style:italic}.not-found{text-align:center;background:var(--box-bg);border:1px solid var(--line-color);border-radius:12px;padding:60px 20px}.not-found h2{margin-bottom:10px;font-size:26px}.not-found p{color:var(--text-light);font-size:15px}@media (width<=640px){.node-detail-container{padding:16px 14px 50px}.node-detail-content{padding:22px 18px}.detail-title{font-size:22px}.detail-title-row{flex-direction:column;gap:8px;margin-bottom:22px;padding-bottom:16px}.children-grid{grid-template-columns:1fr}.edit-desc-container textarea{min-height:260px;font-size:13px}.desc-body,.desc-para,.desc-bullets li{font-size:14.5px}.desc-code{padding:10px 12px;font-size:12.5px}}@media (width<=480px){.node-detail-container{padding:12px 10px 50px}.node-detail-content{padding:16px 14px}.detail-title{font-size:19px}.detail-title-row{margin-bottom:16px;padding-bottom:12px}.detail-child-badge{padding:3px 9px;font-size:11px}.detail-title-actions{flex-flow:wrap;align-items:center}.detail-complete-btn{padding:5px 11px;font-size:12px}.breadcrumb{padding:7px 10px;font-size:11px}.btn-back{margin-bottom:14px;padding:7px 12px;font-size:13px}.desc-body,.desc-para,.desc-bullets li{font-size:14px}.desc-code{padding:9px 10px;font-size:12px}.desc-link{padding:3px 8px;font-size:12px}.desc-ref-line{gap:6px;padding:7px 10px;font-size:13px}.edit-desc-container textarea{min-height:220px}.children-grid{gap:7px}.child-card{padding:11px 12px}.child-card-name{font-size:13px}}@media (width<=360px){.node-detail-container{padding:10px 8px 50px}.node-detail-content{padding:14px 12px}.detail-title{font-size:17px}}.ai-section-wrapper .section-header{margin-bottom:12px}.btn-ask-ai{cursor:pointer;color:#fff;background:linear-gradient(135deg,#8b5cf6,#6366f1);border:none;border-radius:9px;align-items:center;gap:7px;padding:7px 16px;font-size:13px;font-weight:600;transition:opacity .15s,transform .15s;display:inline-flex;box-shadow:0 3px 12px #8b5cf659}.btn-ask-ai:hover:not(:disabled){opacity:.88;transform:translateY(-1px)}.btn-ask-ai:disabled{opacity:.6;cursor:not-allowed}.btn-ask-ai.loading{background:linear-gradient(135deg,#6366f1,#8b5cf6)}@keyframes spin{to{transform:rotate(360deg)}}.spin{animation:.9s linear infinite spin}.ai-loading{color:var(--text-secondary);flex-direction:column;align-items:center;gap:10px;padding:28px;font-size:13.5px;display:flex}.ai-loading-dots{gap:6px;display:flex}.ai-loading-dots span{background:#8b5cf6;border-radius:50%;width:8px;height:8px;animation:1.2s ease-in-out infinite dotPulse}.ai-loading-dots span:nth-child(2){animation-delay:.2s}.ai-loading-dots span:nth-child(3){animation-delay:.4s}@keyframes dotPulse{0%,80%,to{opacity:.4;transform:scale(.6)}40%{opacity:1;transform:scale(1)}}.ai-error{color:#ef4444;background:#ef444414;border:1px solid #ef444440;border-radius:9px;margin-bottom:10px;padding:11px 14px;font-size:13px}.ai-empty{color:var(--text-secondary);padding:8px 0;font-size:13.5px;font-style:italic}.ai-response-card{background:var(--box-bg);border:1px solid var(--line-color);border-left:3px solid #8b5cf6;border-radius:12px;margin-bottom:10px;padding:16px 18px}.ai-response-old{opacity:.75;border-left-color:#94a3b8}.ai-response-meta{flex-wrap:wrap;gap:8px;margin-bottom:14px;display:flex}.ai-meta-badge{color:#8b5cf6;background:#8b5cf61a;border:1px solid #8b5cf633;border-radius:12px;align-items:center;gap:4px;padding:3px 9px;font-size:11.5px;font-weight:600;display:inline-flex}.ai-meta-date{color:var(--text-secondary);border-color:var(--border);background:#64748b1a}.ai-response-body{flex-direction:column;gap:14px;display:flex}.ai-section{flex-direction:column;gap:7px;display:flex}.ai-section-heading{color:var(--primary);align-items:center;gap:6px;margin:0 0 4px;font-size:14px;font-weight:700;display:flex}.ai-section-heading:before{content:"";background:#8b5cf6;border-radius:2px;width:3px;height:14px;display:inline-block}.ai-para{color:var(--text-color);margin:0;font-size:14px;line-height:1.7}.ai-bullet{align-items:flex-start;gap:9px;font-size:13.5px;line-height:1.6;display:flex}.ai-bullet-dot{color:#8b5cf6;flex-shrink:0;font-size:16px;line-height:1.4}.ai-history{margin-top:6px}.ai-history-toggle{border:1px solid var(--line-color);color:var(--text-secondary);cursor:pointer;background:0 0;border-radius:7px;align-items:center;gap:6px;margin-bottom:8px;padding:5px 12px;font-size:12.5px;transition:all .15s;display:inline-flex}.ai-history-toggle:hover{background:var(--hover-bg);color:var(--text-color)}.ai-count-badge{color:#8b5cf6;vertical-align:middle;background:#8b5cf61f;border-radius:10px;align-items:center;margin-left:8px;padding:2px 8px;font-size:11px;font-weight:700;display:inline-flex}.ai-history-toggle-btn{color:#8b5cf6;cursor:pointer;background:#8b5cf614;border:1px solid #8b5cf640;border-radius:7px;align-items:center;gap:5px;padding:5px 11px;font-size:12.5px;transition:all .15s;display:inline-flex}.ai-history-toggle-btn:hover{background:#8b5cf629}.ai-history-list{flex-direction:column;gap:12px;margin-top:4px;display:flex}.ai-meta-latest{color:#10b981;background:#10b9811f;border-color:#10b98140}.ai-meta-num{color:var(--text-secondary);border-color:var(--border);background:#64748b1a}.ai-nav-controls{align-items:center;gap:6px;display:flex}.ai-nav-btn{background:var(--bg-color);border:1px solid var(--line-color);color:var(--text-light);cursor:pointer;border-radius:6px;align-items:center;gap:3px;padding:3px 9px;font-family:inherit;font-size:12px;font-weight:500;transition:all .15s;display:inline-flex}.ai-nav-btn:hover:not(:disabled){color:#8b5cf6;background:#8b5cf60f;border-color:#8b5cf6}.ai-nav-btn:disabled{opacity:.35;cursor:not-allowed}.ai-nav-label{color:var(--text-light);text-align:center;min-width:36px;font-size:12px;font-weight:600}.ai-input-bar{align-items:center;gap:8px;margin-bottom:14px;display:flex}.ai-input{background:var(--bg-color);color:var(--text-color);border:1px solid var(--line-color);border-radius:9px;flex:1;min-width:0;padding:9px 14px;font-family:inherit;font-size:13.5px;transition:border-color .2s,box-shadow .2s}.ai-input:focus{border-color:#8b5cf6;outline:none;box-shadow:0 0 0 3px #8b5cf61f}.ai-input::placeholder{color:var(--text-light);opacity:.75}.ai-input:disabled{opacity:.55;cursor:not-allowed}.ai-send-btn{cursor:pointer;color:#fff;background:linear-gradient(135deg,#8b5cf6,#6366f1);border:none;border-radius:9px;flex-shrink:0;justify-content:center;align-items:center;width:38px;height:38px;transition:opacity .15s,transform .15s;display:flex;box-shadow:0 3px 10px #8b5cf64d}.ai-send-btn:hover:not(:disabled){opacity:.88;transform:translateY(-1px)}.ai-send-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.ai-send-btn.loading{background:linear-gradient(135deg,#6366f1,#8b5cf6)}@media (width<=480px){.ai-input{padding:8px 11px;font-size:13px}.ai-send-btn{border-radius:8px;width:34px;height:34px}}:root{--bg-color:#f4f7fb;--box-bg:#fff;--line-color:#dbe5f0;--text-color:#162033;--text-light:#64748b;--primary:#2563eb;--primary-light:#60a5fa;--success:#10b981;--danger:#ef4444;--border-radius:12px;--header-height:90px;--shadow-soft:0 12px 30px #0f172a14;--shadow-hover:0 18px 44px #2563eb29}:root.dark{--bg-color:#080f1e;--box-bg:#111827;--line-color:#1f2d45;--text-color:#e2e8f0;--text-light:#94a3b8;--primary:#3b82f6;--primary-light:#60a5fa;--success:#10b981;--danger:#ef4444;--shadow-soft:0 16px 38px #00000057;--shadow-hover:0 18px 46px #3b82f638}*{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;box-sizing:border-box;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif}#root{text-align:left;border:none;width:100%;max-width:100%;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-color);background-image:linear-gradient(#ffffffc7,#fff0),radial-gradient(at 15% 40%,#2563eb17 0%,#0000 55%),radial-gradient(at 85% 15%,#14b8a612 0%,#0000 50%),radial-gradient(at 50% 95%,#10b9810d 0%,#0000 45%);width:100vw;min-height:100vh;margin:0;transition:background-color .3s,color .3s;overflow-x:hidden}:root.dark body{background-image:linear-gradient(#0f172ae0,#0f172a00),radial-gradient(at 15% 40%,#3b82f61f 0%,#0000 55%),radial-gradient(at 85% 15%,#14b8a614 0%,#0000 50%),radial-gradient(at 50% 95%,#10b98112 0%,#0000 45%)}.glass-header{z-index:1200;width:100%;height:var(--header-height);-webkit-backdrop-filter:blur(40px)saturate(180%);background:linear-gradient(#ffffffad 0%,#ffffff5c 100%) fixed;border-bottom:1.5px solid #2563eb1f;transition:all .4s cubic-bezier(.4,0,.2,1);position:sticky;top:0;box-shadow:inset 0 1px #ffffffb8,0 18px 44px #0f172a12,0 8px 20px #2563eb0f}:root.dark .glass-header{background:linear-gradient(#080f1e80 0%,#0f172a59 100%);border-bottom:1.5px solid #3b82f626;box-shadow:inset 0 1px #ffffff08,0 20px 50px #3b82f61a,0 8px 20px #8b5cf614,0 0 1px #0003}.header-inner{justify-content:space-between;align-items:center;gap:20px;height:100%;padding:0 40px;display:flex}.header-left{flex-shrink:0;align-items:center;gap:14px;min-width:160px;display:flex}.app-logo-icon{color:#fff;-webkit-user-select:none;user-select:none;background:linear-gradient(135deg,#2563eb 0%,#14b8a6 58%,#8b5cf6 100%);border-radius:14px;flex-shrink:0;justify-content:center;align-items:center;width:54px;height:54px;font-size:26px;font-weight:900;transition:all .4s cubic-bezier(.4,0,.2,1);display:flex;position:relative;overflow:hidden;box-shadow:0 12px 30px #2563eb5c,0 0 20px #14b8a62e,0 2px 8px #0003}.app-logo-icon:before{content:"";background:linear-gradient(45deg,#0000 30%,#ffffff1a 50%,#0000 70%);width:200%;height:200%;animation:3s infinite shimmer;position:absolute;top:-50%;left:-50%;transform:rotate(45deg)}@keyframes shimmer{0%{transform:translate(-100%)translateY(-100%)rotate(45deg)}to{transform:translate(100%)translateY(100%)rotate(45deg)}}.app-logo-icon:hover{transform:scale(1.12)translateY(-4px);box-shadow:0 16px 40px #3b82f699,0 0 30px #8b5cf666,0 4px 12px #00000040}.app-name{letter-spacing:-1px;background:linear-gradient(135deg,#2563eb 0%,#14b8a6 55%,#8b5cf6 100%);-webkit-text-fill-color:transparent;white-space:nowrap;-webkit-user-select:none;user-select:none;text-shadow:0 2px 10px #3b82f61a;-webkit-background-clip:text;background-clip:text;font-size:28px;font-weight:950;transition:all .4s cubic-bezier(.4,0,.2,1)}.app-name:hover{letter-spacing:-.5px;transform:scale(1.05)}.topic-selector{position:relative}.topic-trigger{cursor:pointer;color:var(--text-light);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);white-space:nowrap;background:#ffffff6b;border:1.5px solid #2563eb2e;border-radius:10px;align-items:center;gap:6px;padding:6px 11px;font-size:12.5px;font-weight:600;transition:all .25s cubic-bezier(.4,0,.2,1);display:flex}.topic-trigger:hover{color:var(--text-color);background:linear-gradient(135deg,#2563eb1a 0%,#14b8a614 100%);border-color:#2563eb61;transform:translateY(-1px);box-shadow:0 4px 14px #3b82f626}:root.dark .topic-trigger{color:#c8dcffd9;background:#ffffff0f;border-color:#639bff38}:root.dark .topic-trigger:hover{color:#e2eaff;background:#3b82f61f;border-color:#639bff6b}.topic-label{text-overflow:ellipsis;max-width:160px;overflow:hidden}.topic-dropdown{background:var(--box-bg);border:1px solid var(--line-color);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);z-index:2000;border-radius:14px;min-width:230px;padding:6px;animation:.16s cubic-bezier(.34,1.2,.64,1) panelFadeIn;position:absolute;top:calc(100% + 8px);left:0;box-shadow:0 16px 48px #00000024,0 6px 18px #00000014}.topic-option{cursor:pointer;width:100%;color:var(--text-light);text-align:left;background:0 0;border:none;border-radius:8px;align-items:center;gap:8px;padding:8px 10px;font-size:13px;font-weight:500;transition:all .18s;display:flex}.topic-option-label{white-space:nowrap;text-overflow:ellipsis;flex:1;min-width:0;overflow:hidden}.topic-option:hover{color:var(--text-color);background:#2563eb14}.topic-option.active{color:#2563eb;background:linear-gradient(135deg,#2563eb1f 0%,#14b8a614 100%);font-weight:700}:root.dark .topic-option.active{color:#60a5fa;background:#3b82f624}.topic-sub{padding-left:18px;font-size:12.5px}.topic-group-header{letter-spacing:.06em;text-transform:uppercase;color:var(--text-light);opacity:.6;-webkit-user-select:none;user-select:none;margin-top:2px;padding:6px 10px 3px;font-size:10.5px;font-weight:700}.topic-check{color:#2563eb;flex-shrink:0;margin-left:auto;font-size:11px;font-weight:700}:root.dark .topic-check{color:#60a5fa}.header-center{flex:1;justify-content:center;align-items:center;display:flex}.layout-pill{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#ffffff75;border:1.5px solid #2563eb33;border-radius:14px;gap:4px;padding:5px;transition:all .3s;display:flex;box-shadow:0 4px 16px #3b82f61a,inset 0 1px #ffffff4d}.layout-pill:hover{background:#ffffffb3;border-color:#2563eb6b;box-shadow:0 6px 24px #3b82f626,inset 0 1px #fff6}:root.dark .layout-pill{background:#3b82f61f;border:1.5px solid #3b82f64d;box-shadow:0 4px 16px #3b82f626,inset 0 1px #ffffff1a}:root.dark .layout-pill:hover{background:#3b82f62e;border-color:#3b82f680;box-shadow:0 6px 24px #3b82f640,inset 0 1px #ffffff26}.pill-btn{color:var(--text-light);cursor:pointer;letter-spacing:.2px;white-space:nowrap;background:0 0;border:1.5px solid #0000;border-radius:10px;align-items:center;gap:6px;padding:8px 18px;font-size:13px;font-weight:700;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;position:relative}.pill-btn:hover{color:var(--primary);background:#3b82f61f;border-color:#3b82f64d;transform:translateY(-1px)}.pill-btn.active{color:var(--primary);background:linear-gradient(135deg,#2563eb2e 0%,#14b8a61f 100%);border-color:#3b82f680;font-weight:900;box-shadow:0 6px 18px #3b82f640,0 0 8px #8b5cf626}:root.dark .pill-btn.active{color:var(--primary-light);background:linear-gradient(135deg,#3b82f640 0%,#8b5cf633 100%);border-color:#3b82f699;box-shadow:0 6px 18px #3b82f64d,0 0 12px #8b5cf633}.header-right{justify-content:flex-end;align-items:center;gap:6px;min-width:160px;display:flex}.hdr-icon-btn{width:40px;height:40px;color:var(--text-light);cursor:pointer;background:0 0;border:1.5px solid #0000;border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;font-size:18px;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;position:relative}.hdr-icon-btn:hover{color:var(--primary);background:#3b82f626;border-color:#3b82f64d;transform:translateY(-2px)scale(1.04);box-shadow:0 6px 16px #3b82f633}.hdr-icon-btn:active{transform:translateY(0)scale(.97)}.theme-toggle-btn:hover{color:#f59e0b;background:#f59e0b26;border-color:#f59e0b4d;box-shadow:0 6px 16px #f59e0b2e}.profile-menu{position:relative}.profile-trigger{cursor:pointer;color:var(--text-light);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#ffffff7a;border:1.5px solid #2563eb33;border-radius:11px;align-items:center;gap:8px;padding:7px 12px 7px 9px;font-size:13px;font-weight:700;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex}.profile-trigger:hover{color:var(--text-color);background:linear-gradient(135deg,#2563eb21 0%,#14b8a61a 100%);border-color:#2563eb6b;transform:translateY(-1px);box-shadow:0 6px 16px #3b82f62e,0 0 8px #8b5cf614}.user-avatar{color:#fff;background:linear-gradient(135deg,#2563eb 0%,#14b8a6 55%,#8b5cf6 100%);border:1.5px solid #ffffff26;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:13px;font-weight:900;transition:all .3s;display:flex;position:relative;box-shadow:0 3px 12px #667eea4d,0 0 8px #ec489926}.profile-trigger:hover .user-avatar{transform:scale(1.08);box-shadow:0 4px 14px #667eea66,0 0 10px #ec489933}.profile-panel{background:var(--box-bg);border:1px solid var(--line-color);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);z-index:2000;border-radius:16px;min-width:235px;padding:8px;animation:.18s cubic-bezier(.34,1.2,.64,1) panelFadeIn;position:absolute;top:calc(100% + 10px);right:0;box-shadow:0 20px 60px #00000029,0 8px 24px #0000001a,inset 0 1px #ffffff1a}:root.dark .profile-panel{box-shadow:0 20px 60px #0000008c,0 8px 24px #0006}@keyframes panelFadeIn{0%{opacity:0;transform:translateY(-8px)scale(.97)}to{opacity:1;transform:translateY(0)scale(1)}}.profile-header-section{align-items:center;gap:12px;padding:10px 10px 12px;display:flex}.user-avatar-lg{color:#fff;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:42px;height:42px;font-size:17px;font-weight:700;display:flex;box-shadow:0 4px 12px #667eea61}.profile-text .profile-name{color:var(--text-color);margin:0;font-size:14px;font-weight:700}.profile-text .profile-email{color:var(--text-light);margin:2px 0 0;font-size:11px}.panel-divider{background:var(--line-color);height:1px;margin:4px 0}.panel-item{width:100%;color:var(--text-color);cursor:pointer;text-align:left;background:0 0;border:none;border-radius:9px;align-items:center;gap:9px;padding:9px 12px;font-size:13px;font-weight:500;transition:all .15s;display:flex}.panel-item:hover{color:var(--primary);background:#3b82f614}.panel-item-danger:hover{color:var(--danger);background:#ef444414}.profile-panel{min-width:300px}.profile-bio{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;max-width:160px;margin-top:3px;font-size:11px;font-style:italic;overflow:hidden}.panel-edit-btn{border:1px solid var(--border);cursor:pointer;color:var(--text-secondary);background:0 0;border-radius:7px;flex-shrink:0;padding:5px 7px;transition:all .15s}.panel-edit-btn:hover{background:var(--hover-bg);color:var(--primary);border-color:var(--primary)}.panel-stats-row{justify-content:space-around;align-items:center;padding:10px 8px;display:flex}.panel-stat{flex-direction:column;align-items:center;gap:2px;display:flex}.panel-stat-val{color:var(--text-color);font-size:17px;font-weight:800;line-height:1}.panel-stat-lbl{color:var(--text-secondary);font-size:10px}.panel-stat-divider{background:var(--border);width:1px;height:28px}.panel-goal-section{padding:6px 12px 8px}.panel-goal-row{color:var(--text-secondary);align-items:center;gap:7px;font-size:12.5px;display:flex}.panel-goal-label{color:var(--text-color);font-weight:600}.panel-goal-val{color:var(--primary);flex:1;font-size:12px;font-weight:600}.panel-goal-change{cursor:pointer;color:var(--text-secondary);background:0 0;border:none;border-radius:5px;padding:3px 5px;transition:all .15s}.panel-goal-change:hover{background:var(--hover-bg);color:var(--primary)}.panel-goal-picker{flex-wrap:wrap;gap:6px;margin-top:8px;padding-left:20px;display:flex}.panel-goal-pill{border:1px solid var(--border);color:var(--text-secondary);cursor:pointer;background:0 0;border-radius:12px;padding:3px 10px;font-size:12px;font-weight:600;transition:all .15s}.panel-goal-pill:hover{background:var(--hover-bg);border-color:var(--primary);color:var(--primary)}.panel-goal-pill.active{background:var(--primary);border-color:var(--primary);color:#fff}.pem-overlay{z-index:3000;background:#00000073;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.pem-modal{background:var(--box-bg);border-radius:18px;width:100%;max-width:460px;max-height:92vh;animation:.2s cubic-bezier(.34,1.2,.64,1) panelFadeIn;overflow-y:auto;box-shadow:0 24px 64px #00000040}.pem-modal-sm{max-width:360px}.pem-header{background:var(--box-bg);z-index:2;justify-content:space-between;align-items:center;padding:20px 20px 0;display:flex;position:sticky;top:0}.pem-title{align-items:center;gap:7px;font-size:16px;font-weight:700;display:flex}.pem-close{cursor:pointer;color:var(--text-secondary);background:0 0;border:none;border-radius:7px;padding:5px}.pem-close:hover{background:var(--hover-bg)}.pem-avatar-section{flex-wrap:wrap;align-items:center;gap:16px;padding:18px 20px 12px;display:flex}.pem-avatar-preview{color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:60px;height:60px;font-size:26px;font-weight:800;display:flex;box-shadow:0 4px 14px #0003}.pem-color-grid{flex-wrap:wrap;flex:1;gap:7px;display:flex}.pem-color-dot{cursor:pointer;border:2.5px solid #0000;border-radius:50%;justify-content:center;align-items:center;width:26px;height:26px;transition:transform .15s,border-color .15s;display:flex}.pem-color-dot:hover{transform:scale(1.15)}.pem-color-dot.active{box-shadow:0 0 0 2px var(--primary);border-color:#fffc}.pem-avatar-hint{color:var(--text-secondary);width:100%;margin-top:-8px;padding-left:76px;font-size:11px}.pem-fields{flex-direction:column;gap:13px;padding:0 20px 12px;display:flex}.pem-row{gap:12px;display:flex}.pem-row .pem-field{flex:1}.pem-field{flex-direction:column;gap:5px;display:flex}.pem-label{color:var(--text-secondary);font-size:12px;font-weight:600}.pem-input{border:1px solid var(--border);background:var(--bg-color);width:100%;color:var(--text-color);box-sizing:border-box;border-radius:10px;outline:none;padding:9px 12px;font-size:13.5px;transition:border-color .15s}.pem-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #3b82f61f}.pem-textarea{resize:vertical;min-height:60px;font-family:inherit}.pem-footer{border-top:1px solid var(--border);justify-content:flex-end;gap:10px;margin-top:4px;padding:14px 20px 20px;display:flex}.pem-cancel{border:1px solid var(--border);color:var(--text-secondary);cursor:pointer;background:0 0;border-radius:9px;padding:8px 18px;font-size:13.5px;transition:all .15s}.pem-cancel:hover{background:var(--hover-bg)}.pem-save{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:9px;align-items:center;gap:7px;padding:8px 18px;font-size:13.5px;font-weight:600;transition:opacity .15s;display:flex}.pem-save:hover{opacity:.88}.shortcuts-list{flex-direction:column;gap:10px;padding:16px 20px 20px;display:flex}.shortcut-row{align-items:center;gap:14px;display:flex}.shortcut-key{border:1px solid var(--border);background:var(--bg-color);white-space:nowrap;color:var(--text-color);box-shadow:0 2px 0 var(--border);border-radius:6px;flex-shrink:0;padding:4px 10px;font-family:monospace;font-size:12px;font-weight:600}.shortcut-desc{color:var(--text-secondary);font-size:13px}.ph-user-bio{color:var(--text-secondary);margin-top:3px;font-size:12px;font-style:italic}.ph-ai-stats-card{background:var(--box-bg);border:1px solid var(--border);border-left:3px solid #8b5cf6;border-radius:14px;flex-direction:column;gap:12px;padding:16px 20px;display:flex}.ph-ai-stats-title{color:#8b5cf6;align-items:center;gap:6px;font-size:14px;font-weight:700;display:flex}.ph-ai-stats-row{justify-content:space-around;gap:0;display:flex}.ph-ai-stat{flex-direction:column;align-items:center;gap:2px;display:flex}.ph-ai-val{color:var(--text-color);font-size:20px;font-weight:800}.ph-ai-lbl{color:var(--text-secondary);font-size:11px}.ph-ai-top{flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;display:flex}.ph-ai-top-label{color:var(--text-secondary);align-items:center;gap:4px;display:flex}.ph-ai-top-node{color:#8b5cf6;background:#8b5cf61a;border:1px solid #8b5cf633;border-radius:10px;padding:2px 9px;font-size:11.5px;font-weight:600}.ph-item-ai{border-left:3px solid #8b5cf6}.confirm-overlay{-webkit-backdrop-filter:blur(7px);z-index:9999;background:#00000073;justify-content:center;align-items:center;animation:.18s overlayIn;display:flex;position:fixed;inset:0}@keyframes overlayIn{0%{opacity:0}to{opacity:1}}.confirm-modal{background:var(--box-bg);border:1px solid var(--line-color);border-radius:22px;width:calc(100% - 40px);max-width:400px;padding:36px 32px;animation:.25s cubic-bezier(.34,1.4,.64,1) modalSlideUp;box-shadow:0 34px 88px #0f172a33,0 10px 30px #2563eb1a,inset 0 1px #ffffff2e}:root.dark .confirm-modal{box-shadow:0 30px 80px #000000a6,0 10px 30px #00000073}@keyframes modalSlideUp{0%{opacity:0;transform:scale(.88)translateY(24px)}to{opacity:1;transform:scale(1)translateY(0)}}.confirm-icon-wrap{width:60px;height:60px;color:var(--danger);background:linear-gradient(135deg,#ef444424 0%,#ef444412 100%);border:2px solid #ef444438;border-radius:50%;justify-content:center;align-items:center;margin:0 auto 20px;display:flex}.confirm-title{text-align:center;color:var(--text-color);letter-spacing:-.4px;margin:0 0 10px;font-size:21px;font-weight:800}.confirm-message{text-align:center;color:var(--text-light);margin:0 0 28px;font-size:14px;line-height:1.65}.confirm-message strong{color:var(--text-color);font-weight:600}.confirm-actions{gap:12px;display:flex}.btn-confirm-cancel{border:1.5px solid var(--line-color);color:var(--text-color);cursor:pointer;background:0 0;border-radius:11px;flex:1;padding:12px 16px;font-family:inherit;font-size:14px;font-weight:600;transition:all .2s}.btn-confirm-cancel:hover{border-color:var(--text-light);background:#0000000a}:root.dark .btn-confirm-cancel:hover{background:#ffffff0f}.btn-confirm-delete{color:#fff;cursor:pointer;background:linear-gradient(135deg,#ef4444 0%,#b91c1c 100%);border:none;border-radius:11px;flex:1;justify-content:center;align-items:center;gap:7px;padding:12px 16px;font-family:inherit;font-size:14px;font-weight:700;transition:all .2s;display:flex;box-shadow:0 4px 16px #ef444461}.btn-confirm-delete:hover{background:linear-gradient(135deg,#dc2626 0%,#b91c1c 100%);transform:translateY(-1px);box-shadow:0 6px 22px #ef444480}.page-content{min-height:calc(100vh - var(--header-height))}.app-container{box-sizing:border-box;width:100%;padding:40px 0}.tree-viewport{width:100%;position:relative}.tree-scroll-btn{z-index:30;width:44px;height:44px;color:var(--primary);-webkit-backdrop-filter:blur(14px);cursor:pointer;background:#fffffff0;border:1px solid #2563eb47;border-radius:50%;padding:0;transition:background .18s,box-shadow .18s,border-color .18s;position:fixed;top:50%;transform:translateY(-50%);box-shadow:0 12px 28px #0f172a24,inset 0 0 0 1px #ffffff8c}.tree-scroll-btn:hover{background:linear-gradient(135deg, var(--primary) 0%, #14b8a6 100%);border-color:var(--primary);color:#fff;box-shadow:0 14px 34px #3b82f652,inset 0 0 0 1px #ffffff47}.tree-scroll-btn-left{left:10px}.tree-scroll-btn-right{right:10px}:root.dark .tree-scroll-btn{background:#111827eb;border-color:#60a5fa5c;box-shadow:0 10px 30px #00000061,inset 0 0 0 1px #ffffff0d}.tree-wrapper{box-sizing:border-box;width:100%;padding:20px 60px;display:flex;overflow:auto}.tree-wrapper.vertical{justify-content:center;padding-top:40px}.tree-wrapper::-webkit-scrollbar{width:8px;height:8px}.tree-wrapper::-webkit-scrollbar-track{background:0 0}.tree-wrapper::-webkit-scrollbar-thumb{background:#94a3b859;border-radius:4px}.tree-wrapper::-webkit-scrollbar-thumb:hover{background:#94a3b8a6}.tree-node.horizontal{align-items:center;margin:15px 0;display:flex;position:relative}.children-container.horizontal{border-left:2px solid #2563eb57;flex-direction:column;gap:10px;margin-left:20px;padding-left:40px;display:flex;position:relative}.children-container.horizontal:before{content:"";background-color:#2563eb57;width:20px;height:2px;position:absolute;top:50%;left:-20px}.tree-node.horizontal:before{content:"";background-color:#2563eb57;width:40px;height:2px;position:absolute;top:50%;left:-40px}.tree-wrapper.horizontal>.tree-node.horizontal:before{display:none}.tree-node.vertical{flex-direction:column;align-items:center;margin:0 15px;display:flex;position:relative}.children-container.vertical{border-top:2px solid #2563eb57;flex-direction:row;align-items:flex-start;gap:15px;margin-top:20px;padding-top:40px;display:flex;position:relative}.children-container.vertical:before{content:"";background-color:#2563eb57;width:2px;height:20px;position:absolute;top:-20px;left:50%;transform:translate(-50%)}.tree-node.vertical:before{content:"";background-color:#2563eb57;width:2px;height:40px;position:absolute;top:-40px;left:50%;transform:translate(-50%)}.tree-wrapper.vertical>.tree-node.vertical:before{display:none}.node-content{background:linear-gradient(180deg, #fffffffa, #ffffffeb), var(--box-bg);border-radius:var(--border-radius);z-index:2;min-width:185px;box-shadow:0 1px 0 #fffc inset, var(--shadow-soft);white-space:nowrap;border:1px solid #dbe5f0f2;justify-content:space-between;align-items:center;padding:12px 16px;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;position:relative;overflow:hidden}.node-content:after{content:"";pointer-events:none;background:linear-gradient(90deg,#0000 0%,#ffffffa6 50%,#0000 100%);height:1px;position:absolute;top:0;left:0;right:0}.node-content:hover{border-color:var(--primary);box-shadow:0 1px 0 #ffffffd9 inset, var(--shadow-hover), 0 0 0 1px #2563eb2e;transform:translateY(-3px)}:root.dark .node-content{background:linear-gradient(180deg, #111827fa, #0f172af0), var(--box-bg);border-color:#25324af2}.node-actions{gap:6px;margin-left:12px;display:flex}button{color:var(--text-light);cursor:pointer;background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;padding:5px;font-family:inherit;transition:all .2s;display:flex}button:hover{color:var(--primary);background:#2563eb1a}.btn-add:hover{color:var(--success);background:#10b9811a}.btn-delete:hover{color:var(--danger);background:#ef44441a}.btn-complete{color:var(--text-light)}.btn-complete:hover{color:#10b981;background:#10b9811f}.btn-complete-done{color:#10b981}.btn-complete-done:hover{color:#059669;background:#10b98126}.node-completed{background:#10b9810f!important;border-color:#10b981!important}.node-completed .node-text{color:#059669;-webkit-text-decoration:line-through #05966980;text-decoration:line-through #05966980}.btn-read-more{background-color:var(--box-bg);color:var(--primary);white-space:nowrap;border:1px solid #2563eb4d;border-radius:6px;align-self:flex-start;gap:4px;margin-top:10px;padding:6px 12px;font-size:12px;font-weight:600}.tree-node.horizontal .btn-read-more{align-self:flex-start}.btn-read-more:hover{border-color:var(--primary-light);background-color:#2563eb14}.edit-container{flex:1;align-items:center;gap:10px;display:flex}.edit-container input{background:var(--bg-color);border:2px solid var(--primary);color:var(--text-color);border-radius:6px;outline:none;flex:1;padding:7px 11px;font-family:inherit;font-size:14px;transition:all .2s}.edit-container input:focus{box-shadow:0 0 0 3px #3b82f621}.btn-edit:hover{color:var(--primary);background:#3b82f61a}.btn-view:hover{color:#8b5cf6;background:#8b5cf61a}.node-text{cursor:text;color:var(--text-color);font-size:14px;font-weight:500}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#94a3b861;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#94a3b8a6}.tree-loading{min-height:300px;color:var(--text-light);flex-direction:column;justify-content:center;align-items:center;gap:18px;font-size:15px;font-weight:500;display:flex}.loading-spinner{border:3px solid var(--line-color);border-top-color:var(--primary);border-radius:50%;width:42px;height:42px;animation:.75s linear infinite spin;box-shadow:0 0 18px #2563eb2e}.tree-empty{min-height:340px;color:var(--text-light);text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:22px;display:flex}.tree-empty p{margin:0;font-size:17px;font-weight:500}.btn-add-root{background:linear-gradient(135deg, var(--primary) 0%, #14b8a6 100%);color:#fff;cursor:pointer;letter-spacing:.2px;border:none;border-radius:12px;padding:13px 28px;font-family:inherit;font-size:14px;font-weight:700;transition:all .2s;box-shadow:0 4px 18px #3b82f652}.btn-add-root:hover{color:#fff;background:linear-gradient(135deg,#1d4ed8 0%,#0f766e 100%);transform:translateY(-2px);box-shadow:0 8px 26px #3b82f66b}.storage-mode-btn{letter-spacing:.3px;align-items:center;gap:5px;font-size:11px;font-weight:600;display:inline-flex}.storage-label{display:none}@media (width>=500px){.storage-label{display:inline}}.settings-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;background:#00000073;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.settings-modal{background:var(--box-bg);border:1px solid var(--line-color);border-radius:14px;width:100%;max-width:480px;overflow:hidden;box-shadow:0 24px 60px #00000040}.settings-header{border-bottom:1px solid var(--line-color);justify-content:space-between;align-items:center;padding:20px 24px 16px;display:flex}.settings-header h2{color:var(--text-color);margin:0;font-size:17px;font-weight:700}.settings-close{color:var(--text-light);cursor:pointer;background:0 0;border:none;border-radius:6px;padding:4px;transition:all .15s;display:flex}.settings-close:hover{background:var(--line-color);color:var(--text-color)}.settings-toast{border-radius:8px;align-items:center;gap:8px;margin:12px 24px 0;padding:9px 14px;font-size:13px;font-weight:500;display:flex}.toast-ok{color:#065f46;background:#10b9811f;border:1px solid #10b98140}.toast-err{color:#991b1b;background:#ef44441f;border:1px solid #ef444440}:root.dark .toast-ok{color:#6ee7b7}:root.dark .toast-err{color:#fca5a5}.settings-section{border-bottom:1px solid var(--line-color);padding:18px 24px}.settings-section:last-child{border-bottom:none}.settings-section h3{letter-spacing:1.2px;text-transform:uppercase;color:var(--text-light);margin:0 0 6px;font-size:12px;font-weight:700}.settings-hint{color:var(--text-light);margin:0 0 14px;font-size:13px}.mode-toggle{flex-direction:column;gap:8px;display:flex}@media (width>=420px){.mode-toggle{flex-direction:row}}.mode-btn{border:2px solid var(--line-color);background:var(--bg-color);cursor:pointer;text-align:left;color:var(--text-color);border-radius:10px;flex:1;align-items:center;gap:10px;padding:12px 14px;transition:all .15s;display:flex}.mode-btn span{flex-direction:column;display:flex}.mode-btn strong{font-size:14px}.mode-btn small{color:var(--text-light);margin-top:2px;font-size:11px}.mode-btn:hover{border-color:var(--primary)}.mode-btn.active{border-color:var(--primary);color:var(--primary);background:#2563eb12}.mode-btn.active small{color:var(--primary);opacity:.7}.url-row{gap:8px;display:flex}.url-row input{background:var(--bg-color);border:1px solid var(--line-color);color:var(--text-color);border-radius:8px;flex:1;min-width:0;padding:9px 12px;font-family:monospace;font-size:13px}.url-row input:focus{border-color:var(--primary);outline:none}.btn-primary{background:var(--primary);color:#fff;cursor:pointer;white-space:nowrap;border:none;border-radius:8px;padding:9px 16px;font-size:13px;font-weight:600;transition:opacity .15s}.btn-primary:hover{opacity:.88}.settings-actions{flex-wrap:wrap;gap:8px;display:flex}.btn-action{border:1px solid var(--line-color);background:var(--bg-color);color:var(--text-color);cursor:pointer;border-radius:8px;align-items:center;gap:6px;padding:8px 14px;font-family:inherit;font-size:13px;font-weight:500;transition:all .15s;display:inline-flex}.btn-action:hover{border-color:var(--primary);color:var(--primary)}.btn-action.btn-danger:hover{border-color:var(--danger);color:var(--danger)}.btn-upload{cursor:pointer}.confirm-reset{color:var(--text-color);background:#ef444412;border:1px solid #ef444440;border-radius:8px;flex-wrap:wrap;align-items:flex-start;gap:10px;margin-top:12px;padding:12px;font-size:13px;display:flex}.confirm-reset p{flex:1;min-width:180px;margin:0}.confirm-btns{flex-wrap:wrap;gap:8px;display:flex}.btn-danger-solid{background:var(--danger);color:#fff;cursor:pointer;border:none;border-radius:7px;padding:7px 14px;font-family:inherit;font-size:12px;font-weight:600}.btn-cancel-sm{border:1px solid var(--line-color);background:var(--bg-color);color:var(--text-color);cursor:pointer;border-radius:7px;padding:7px 14px;font-family:inherit;font-size:12px}.settings-info p{color:var(--text-light);margin:0;font-size:13px}.mobile-layout-bar{display:none}@media (width<=768px){:root{--header-height:60px}.header-inner{justify-content:space-between;gap:8px;padding:0 12px}.app-logo-icon{border-radius:10px;width:36px;height:36px;font-size:17px}.app-name{letter-spacing:-.4px;font-size:18px}.header-center{display:none}.hdr-icon-btn{width:36px;height:36px}.profile-trigger{gap:4px;padding:5px 8px 5px 6px}.user-avatar{width:28px;height:28px;font-size:11px}.profile-panel{min-width:210px;right:-4px}.mobile-layout-bar{justify-content:center;padding:10px 16px 2px;display:flex}.mobile-layout-bar .layout-pill{justify-content:center;width:100%;max-width:260px}.mobile-layout-bar .pill-btn{flex:1;justify-content:center}.app-container{padding:12px 14px 48px}.tree-wrapper{-webkit-overflow-scrolling:touch;scroll-snap-type:x proximity;padding:16px 10px}.node-content{min-height:48px;padding:10px}.node-text{font-size:13px}.node-actions{gap:3px;margin-left:8px}.btn-add,.btn-delete,.btn-edit,.btn-view{width:30px;min-width:30px;height:30px;min-height:30px;padding:6px}.tree-scroll-btn{width:38px;height:38px}.tree-empty{min-height:260px;padding:40px 20px}.tree-loading{min-height:200px}}@media (width<=480px){.header-inner{gap:6px;padding:0 10px}.header-right{gap:3px}.app-logo-icon{border-radius:9px;width:30px;height:30px;font-size:14px}.app-name{font-size:16px}.storage-label{display:none!important}.profile-panel{min-width:230px;max-width:calc(100vw - 20px);right:-8px}.app-container{padding:8px 10px 48px}.mobile-layout-bar{padding:8px 12px 0}.mobile-layout-bar .layout-pill{max-width:240px}}@media (width<=360px){.header-inner{gap:4px;padding:0 8px}.app-name{display:none}.hdr-icon-btn{width:30px;height:30px}}.node-today{box-shadow:0 0 0 2px #f59e0b38, var(--shadow-soft)!important;border-color:#f59e0b!important}.node-today-badge{color:#fff;letter-spacing:.8px;text-transform:uppercase;background:linear-gradient(135deg,#f59e0b,#d97706);border-radius:20px;padding:2px 7px;font-size:9px;font-weight:800;position:absolute;top:-9px;left:10px;box-shadow:0 2px 8px #f59e0b66}.node-tag-dot{border-radius:50%;flex-shrink:0;width:8px;height:8px;margin-right:4px}.tag-picker-wrap{position:relative}.btn-tag:hover{color:#f59e0b;background:#f59e0b1f}.tag-dropdown{background:var(--box-bg);border:1px solid var(--line-color);z-index:500;border-radius:10px;min-width:150px;padding:5px;animation:.14s cubic-bezier(.34,1.2,.64,1) panelFadeIn;position:absolute;top:calc(100% + 6px);right:0;box-shadow:0 12px 32px #0000002e}.tag-opt{cursor:pointer;width:100%;color:var(--text-color);text-align:left;background:0 0;border:none;border-radius:7px;align-items:center;gap:8px;padding:7px 10px;font-size:12px;font-weight:500;transition:background .15s;display:flex}.tag-opt:hover{background:#3b82f614}.tag-opt-active{font-weight:700;background:#3b82f61f!important}.tag-opt-dot{border-radius:50%;flex-shrink:0;width:9px;height:9px}.btn-collapse{color:var(--text-light);border:1px solid var(--line-color);background:var(--bg-color);cursor:pointer;border-radius:6px;align-self:flex-start;align-items:center;gap:5px;margin-top:6px;padding:3px 8px;font-size:11px;font-weight:600;transition:all .15s;display:flex}.btn-collapse:hover{color:var(--primary);background:#3b82f612;border-color:#3b82f666}.tree-node.horizontal .btn-collapse{margin-top:0;margin-left:8px}.zoom-controls{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#ffffff6b;border:1.5px solid #2563eb2e;border-radius:10px;align-items:center;gap:2px;padding:3px 5px;display:flex}:root.dark .zoom-controls{background:#ffffff0f;border-color:#639bff38}.zoom-label{color:var(--text-light);text-align:center;min-width:34px;font-size:11px;font-weight:700}.topic-divider{background:var(--line-color);height:1px;margin:5px 4px}.topic-add-btn{color:var(--primary)!important;font-weight:600!important}.new-topic-input-row{align-items:center;gap:6px;padding:4px 6px;display:flex}.new-topic-input{background:var(--bg-color);border:1.5px solid var(--primary);color:var(--text-color);border-radius:7px;outline:none;flex:1;min-width:0;padding:6px 9px;font-family:inherit;font-size:13px}.new-topic-save{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:7px;flex-shrink:0;align-items:center;padding:6px 9px;display:flex}.new-topic-save:hover{color:#fff;background:#1d4ed8}.overlay{-webkit-backdrop-filter:blur(6px);z-index:3000;background:#00000085;justify-content:center;align-items:center;padding:16px;animation:.18s overlayIn;display:flex;position:fixed;inset:0}.modal-hdr{border-bottom:1px solid var(--line-color);flex-shrink:0;justify-content:space-between;align-items:center;padding:18px 22px 14px;display:flex}.modal-title{color:var(--text-color);letter-spacing:-.3px;margin:0;font-size:17px;font-weight:800}.modal-close-btn{width:32px;height:32px;color:var(--text-light);cursor:pointer;background:0 0;border:none;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;transition:all .15s;display:flex}.modal-close-btn:hover{color:var(--danger);background:#ef44441a}.sp-overlay{-webkit-backdrop-filter:blur(8px);z-index:4000;background:#0000007a;justify-content:center;align-items:flex-start;padding-top:14vh;display:flex;position:fixed;inset:0}.sp-modal{background:var(--box-bg);border:1px solid var(--line-color);border-radius:16px;width:100%;max-width:560px;animation:.22s cubic-bezier(.34,1.4,.64,1) modalSlideUp;overflow:hidden;box-shadow:0 32px 80px #0000004d,0 8px 24px #3b82f61f}.sp-input-row{border-bottom:1px solid var(--line-color);align-items:center;gap:10px;padding:14px 16px;display:flex}.sp-icon{color:var(--text-light);flex-shrink:0}.sp-input{color:var(--text-color);background:0 0;border:none;outline:none;flex:1;font-family:inherit;font-size:16px}.sp-input::placeholder{color:var(--text-light)}.sp-kbd{background:var(--bg-color);border:1px solid var(--line-color);color:var(--text-light);border-radius:5px;padding:2px 6px;font-family:inherit;font-size:11px}.sp-x{flex-shrink:0}.sp-results{max-height:56vh;padding:6px;overflow-y:auto}.sp-item{text-align:left;cursor:pointer;width:100%;color:var(--text-color);background:0 0;border:none;border-radius:9px;padding:10px 13px;transition:background .12s;display:block}.sp-item:hover,.sp-item-sel{background:#3b82f61a}.sp-path{color:var(--text-light);flex-wrap:wrap;align-items:center;gap:1px;margin-bottom:3px;font-size:10.5px;display:flex}.sp-title{color:var(--text-color);font-size:14px;font-weight:600}.sp-snippet{color:var(--text-light);white-space:nowrap;text-overflow:ellipsis;margin-top:2px;font-size:12px;overflow:hidden}.sp-empty,.sp-hint{color:var(--text-light);text-align:center;flex-direction:column;align-items:center;gap:8px;padding:36px 20px;font-size:14px;display:flex}.sp-hint-icon{opacity:.4}.sp-hint p{margin:0}.sp-hint small{opacity:.7;font-size:12px}.pd-modal{background:var(--box-bg);border:1px solid var(--line-color);border-radius:18px;flex-direction:column;width:100%;max-width:540px;max-height:88vh;animation:.22s cubic-bezier(.34,1.4,.64,1) modalSlideUp;display:flex;overflow-y:auto;box-shadow:0 30px 80px #00000047}.pd-stats{grid-template-columns:1fr 1fr;gap:12px;padding:16px 18px;display:grid}@media (width>=480px){.pd-stats{grid-template-columns:repeat(4,1fr)}}.pd-card{border:1px solid var(--line-color);background:var(--bg-color);border-radius:13px;flex-direction:column;align-items:center;gap:4px;padding:14px 10px;display:flex}.pd-card-green{color:#10b981;border-color:#10b9814d}.pd-card-blue{color:#3b82f6;border-color:#3b82f64d}.pd-card-orange{color:#f59e0b;border-color:#f59e0b4d}.pd-card-purple{color:#8b5cf6;border-color:#8b5cf64d}.pd-val{margin:4px 0 2px;font-size:26px;font-weight:900;line-height:1}.pd-sub{opacity:.7;font-size:14px;font-weight:600}.pd-lbl{color:var(--text-light);text-transform:uppercase;letter-spacing:.7px;font-size:11px;font-weight:600}.pd-bar-bg{background:var(--line-color);border-radius:3px;width:100%;height:5px;margin-top:6px;overflow:hidden}.pd-bar-fill{border-radius:3px;height:100%;transition:width .5s}.pd-breakdown-title{letter-spacing:.8px;text-transform:uppercase;color:var(--text-light);margin:0;padding:4px 18px 8px;font-size:13px;font-weight:700}.pd-breakdown{flex-direction:column;gap:8px;padding:0 18px 18px;display:flex}.pd-row{grid-template-columns:1fr 2fr 50px 36px;align-items:center;gap:10px;display:grid}.pd-row-name{color:var(--text-color);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:500;overflow:hidden}.pd-row-bar{background:var(--line-color);border-radius:4px;height:7px;overflow:hidden}.pd-row-fill{background:linear-gradient(90deg, var(--primary), #14b8a6);border-radius:4px;height:100%;transition:width .5s}.pd-row-nums,.pd-row-pct{color:var(--text-light);text-align:right;font-size:11.5px;font-weight:600}.fc-modal{background:var(--box-bg);border:1px solid var(--line-color);border-radius:18px;flex-direction:column;width:100%;max-width:560px;max-height:90vh;animation:.22s cubic-bezier(.34,1.4,.64,1) modalSlideUp;display:flex;overflow-y:auto;box-shadow:0 30px 80px #00000047}.fc-hdr-btns{align-items:center;gap:6px;display:flex}.fc-ctrl-btn{border:1.5px solid var(--line-color);color:var(--text-light);cursor:pointer;background:0 0;border-radius:8px;align-items:center;gap:5px;padding:5px 11px;font-size:12px;font-weight:600;transition:all .15s;display:flex}.fc-ctrl-btn:hover{border-color:var(--primary);color:var(--primary);background:#3b82f614}.fc-prog-bar-bg{background:var(--line-color);height:4px;overflow:hidden}.fc-prog-bar-fill{background:linear-gradient(90deg, var(--primary), #14b8a6);height:100%;transition:width .35s}.fc-counter{text-align:center;color:var(--text-light);padding:6px 0;font-size:12px;font-weight:700}.fc-path{text-align:center;color:var(--text-light);padding:2px 18px 8px;font-size:11.5px}.fc-card{border:1.5px solid var(--line-color);background:var(--bg-color);border-radius:14px;min-height:160px;margin:12px 18px;padding:22px 20px;transition:border-color .2s}.fc-card-revealed{border-color:var(--primary)}.fc-card-title{color:var(--text-color);letter-spacing:-.3px;margin:0 0 14px;font-size:18px;font-weight:800}.fc-reveal-btn{border:2px dashed var(--line-color);width:100%;color:var(--text-light);cursor:pointer;background:0 0;border-radius:10px;flex-direction:column;align-items:center;gap:10px;padding:18px;font-size:14px;font-weight:600;transition:all .18s;display:flex}.fc-reveal-btn:hover{border-color:var(--primary);color:var(--primary);background:#3b82f60d}.fc-card-body{color:var(--text-color);font-size:13.5px;line-height:1.7}.fc-line{margin-bottom:2px}.fc-spacer{height:8px}.fc-nav{justify-content:center;gap:10px;padding:12px 18px 18px;display:flex}.fc-nav-btn{border:1.5px solid var(--line-color);background:var(--bg-color);color:var(--text-color);cursor:pointer;border-radius:10px;align-items:center;gap:6px;padding:9px 20px;font-size:13px;font-weight:600;transition:all .15s;display:flex}.fc-nav-btn:hover:not(:disabled){border-color:var(--primary);color:var(--primary);background:#3b82f612}.fc-nav-btn:disabled{opacity:.38;cursor:not-allowed}.fc-empty{text-align:center;color:var(--text-light);padding:40px;font-size:14px}.rotate-overlay{z-index:9999;background:var(--bg-color);touch-action:none;justify-content:center;align-items:center;padding:32px;display:flex;position:fixed;inset:0}.rotate-overlay-content{text-align:center;flex-direction:column;align-items:center;gap:22px;max-width:280px;display:flex}.rotate-phone-icon{color:var(--primary);will-change:transform;filter:drop-shadow(0 8px 24px #2563eb4d);animation:2.6s ease-in-out infinite rotatePhoneAnim}@keyframes rotatePhoneAnim{0%{transform:rotate(0)}20%{transform:rotate(0)}45%{transform:rotate(-90deg)}75%{transform:rotate(-90deg)}95%{transform:rotate(0)}to{transform:rotate(0)}}.rotate-title{color:var(--text-color);letter-spacing:-.5px;margin:0;font-size:22px;font-weight:800}.rotate-desc{color:var(--text-light);margin:0;font-size:14px;line-height:1.7}.rotate-hint-icon{color:var(--primary);opacity:.55;animation:1.9s ease-in-out infinite rotatePulse}@keyframes rotatePulse{0%,to{opacity:.5;transform:scale(1)}50%{opacity:.95;transform:scale(1.2)}}.mobile-sidebar{z-index:600;background:var(--box-bg);border-right:1px solid var(--line-color);flex-direction:column;width:52px;transition:width .22s cubic-bezier(.4,0,.2,1),box-shadow .22s;display:flex;position:fixed;top:0;bottom:0;left:0;overflow:hidden;box-shadow:2px 0 12px #0000000f}.mobile-sidebar-open{width:190px;box-shadow:4px 0 32px #0000002e}:root.dark .mobile-sidebar-open{box-shadow:4px 0 32px #00000073}.sidebar-toggle-btn{width:100%;height:44px;color:var(--text-light);cursor:pointer;border:none;border-bottom:1px solid var(--line-color);background:0 0;flex-shrink:0;justify-content:center;align-items:center;transition:background .15s,color .15s;display:flex}.sidebar-toggle-btn:hover{color:#6366f1;background:#6366f112}.sidebar-inner{scrollbar-width:none;flex-direction:column;flex:1;gap:1px;padding:6px 0 10px;display:flex;overflow:hidden auto}.sidebar-inner::-webkit-scrollbar{display:none}.sidebar-chat-btn{color:#6366f1;cursor:pointer;white-space:nowrap;background:linear-gradient(135deg,#6366f126,#8b5cf626);border:none;border-radius:9px;flex-shrink:0;align-items:center;gap:10px;width:calc(100% - 12px);min-height:36px;margin:4px 6px 2px;padding:0 13px;font-size:13px;font-weight:600;transition:background .15s,transform .1s;display:flex;overflow:hidden}.sidebar-chat-btn:hover{background:linear-gradient(135deg,#6366f140,#8b5cf638);transform:translate(1px)}:root.dark .sidebar-chat-btn{background:linear-gradient(135deg,#6366f133,#8b5cf62e)}.sidebar-item{width:100%;min-height:36px;color:var(--text-light);cursor:pointer;white-space:nowrap;text-align:left;background:0 0;border:none;flex-shrink:0;align-items:center;gap:10px;padding:0 17px;font-size:13px;font-weight:500;transition:background .15s,color .15s;display:flex;overflow:hidden}.sidebar-item:hover{color:var(--text-color);background:#6366f112}.sidebar-item:disabled{opacity:.3;cursor:not-allowed}.sidebar-item-active{color:var(--primary);border-left:3px solid var(--primary);background:#2563eb1a;padding-left:14px;font-weight:600}.sidebar-item-active:hover{color:var(--primary);background:#2563eb26}.sidebar-item-topic{width:100%}.sidebar-label{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.sidebar-sep{background:var(--line-color);flex-shrink:0;height:1px;margin:4px 10px}.sidebar-topic-wrap{position:relative}.sidebar-topic-dropdown{background:var(--box-bg);border:1px solid var(--line-color);z-index:800;border-radius:12px;min-width:200px;padding:6px;animation:.14s cubic-bezier(.34,1.2,.64,1) panelFadeIn;position:absolute;top:0;left:calc(100% + 4px);box-shadow:0 12px 36px #0000002e}.sidebar-topic-opt{width:100%;color:var(--text-light);cursor:pointer;text-align:left;background:0 0;border:none;border-radius:8px;align-items:center;gap:9px;padding:8px 12px;font-size:13px;font-weight:500;transition:all .14s;display:flex}.sidebar-topic-opt:hover,.sidebar-topic-opt.active{color:var(--primary);background:#2563eb17}.sidebar-zoom-group{align-items:center;width:100%;min-height:36px;padding:0 6px;display:flex}.sidebar-zoom-btn{flex-shrink:0;justify-content:center;width:36px;min-height:36px;padding:0}.sidebar-zoom-pct{text-align:center;color:var(--text-light);flex:1;font-size:12px;font-weight:700}@media (width<=900px) and (orientation:landscape){.page-content{min-height:100vh}.app-container{padding:8px 12px 24px}.tree-wrapper{-webkit-overflow-scrolling:touch}.aichat-fab{display:none}}@supports (padding:max(0px)){.glass-header{padding-left:max(0px, env(safe-area-inset-left));padding-right:max(0px, env(safe-area-inset-right))}.mobile-sidebar{padding-bottom:max(0px, env(safe-area-inset-bottom))}.page-content{padding-bottom:max(16px, env(safe-area-inset-bottom))}}.btn-exam{color:#8b5cf6;cursor:pointer;background:#8b5cf60f;border:1px solid #8b5cf640;border-radius:7px;justify-content:center;align-items:center;width:28px;min-width:28px;height:28px;min-height:28px;padding:0;transition:all .18s;display:flex}.btn-exam:hover{color:#7c3aed;background:#8b5cf624;border-color:#8b5cf6;transform:translateY(-1px);box-shadow:0 4px 12px #8b5cf638}.node-ai-badge{color:#fff;cursor:pointer;background:linear-gradient(135deg,#8b5cf6,#6366f1);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:18px;height:18px;transition:transform .15s,box-shadow .15s;display:inline-flex;box-shadow:0 1px 6px #8b5cf673}.node-ai-badge:hover{transform:scale(1.2);box-shadow:0 2px 10px #8b5cf699}.exam-overlay{z-index:5000;-webkit-backdrop-filter:blur(6px);background:#0000008c;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0;overflow-y:auto}.exam-modal{background:var(--box-bg);border:1px solid var(--line-color);border-radius:20px;width:100%;animation:.22s cubic-bezier(.34,1.4,.64,1) examSlideUp;position:relative;box-shadow:0 32px 80px #00000047}@keyframes examSlideUp{0%{opacity:0;transform:translateY(24px)scale(.97)}to{opacity:1;transform:translateY(0)scale(1)}}.exam-close-btn{border:1px solid var(--line-color);width:30px;height:30px;color:var(--text-light);cursor:pointer;background:0 0;border-radius:8px;justify-content:center;align-items:center;transition:all .15s;display:flex;position:absolute;top:14px;right:14px}.exam-close-btn:hover{color:var(--danger);border-color:var(--danger);background:#ef44441a}.exam-confirm-modal{text-align:center;max-width:420px;padding:40px 32px 32px}.exam-confirm-icon{color:#8b5cf6;background:linear-gradient(135deg,#8b5cf624 0%,#3b82f61a 100%);border:1.5px solid #8b5cf647;border-radius:20px;justify-content:center;align-items:center;width:72px;height:72px;margin:0 auto 20px;display:flex}.exam-confirm-title{letter-spacing:-.5px;color:var(--text-color);margin:0 0 10px;font-size:24px;font-weight:800}.exam-confirm-node{color:var(--primary);background:#2563eb14;border:1px solid #2563eb2e;border-radius:10px;justify-content:center;align-items:center;gap:6px;width:fit-content;margin:0 auto 16px;padding:6px 14px;font-size:13.5px;font-weight:600;display:flex}.exam-confirm-desc{color:var(--text-light);margin:0 0 18px;font-size:14px;line-height:1.65}.exam-confirm-meta{color:var(--text-light);justify-content:center;align-items:center;gap:8px;margin-bottom:28px;font-size:12px;display:flex}.exam-confirm-actions{gap:10px;display:flex}.exam-setup-modal{flex-direction:column;max-width:500px;max-height:min(90vh,700px);display:flex}.exam-modal-hdr{flex-shrink:0;align-items:center;gap:10px;padding:18px 18px 0;display:flex}.exam-back-btn{border:1px solid var(--line-color);width:30px;height:30px;color:var(--text-light);cursor:pointer;background:0 0;border-radius:8px;justify-content:center;align-items:center;transition:all .15s;display:flex}.exam-back-btn:hover{border-color:var(--primary);color:var(--primary)}.exam-modal-title{color:var(--text-color);flex:1;font-size:16px;font-weight:700}.exam-close-btn-sm{width:28px;height:28px;position:static}.exam-setup-body{scrollbar-width:thin;flex-direction:column;flex:1;gap:22px;padding:18px 22px;display:flex;overflow-y:auto}.exam-setup-footer{border-top:1px solid var(--line-color);flex-shrink:0;padding:14px 22px 20px}.exam-section{flex-direction:column;gap:8px;display:flex}.exam-label{color:var(--text-light);text-transform:uppercase;letter-spacing:.5px;font-size:12.5px;font-weight:700}.exam-hint{color:var(--text-light);margin:2px 0 0;font-size:11.5px;line-height:1.5}.exam-link{color:var(--primary)}.exam-key-row{border:1.5px solid var(--line-color);background:var(--bg-color);border-radius:10px;align-items:center;gap:0;transition:border-color .2s;display:flex;overflow:hidden}.exam-key-row:focus-within{border-color:var(--primary)}.exam-key-input{color:var(--text-color);background:0 0;border:none;outline:none;flex:1;padding:9px 12px;font-family:monospace;font-size:13px}.exam-key-eye{width:38px;color:var(--text-light);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;padding:0;transition:color .15s;display:flex}.exam-key-eye:hover{color:var(--text-color)}.exam-key-saved{color:#10b981;background:#10b98112;border:1.5px solid #10b98147;border-radius:10px;align-items:center;gap:8px;padding:8px 12px;font-size:13px;font-weight:600;display:flex}.exam-key-edit-btn{color:#10b981;cursor:pointer;background:0 0;border:1px solid #10b98161;border-radius:6px;margin-left:auto;padding:2px 8px;font-size:11.5px;font-weight:600;transition:all .15s}.exam-key-edit-btn:hover{background:#10b9811a}.exam-pill-row{flex-wrap:wrap;gap:8px;display:flex}.exam-pill{border:1.5px solid var(--line-color);color:var(--text-light);cursor:pointer;background:0 0;border-radius:20px;padding:6px 16px;font-size:13px;font-weight:600;transition:all .18s}.exam-pill:hover{border-color:var(--primary);color:var(--primary)}.exam-pill.active{background:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 4px 14px #2563eb52}.exam-pill-easy.active{background:#10b981;border-color:#10b981;box-shadow:0 4px 14px #10b98152}.exam-pill-medium.active{background:#f59e0b;border-color:#f59e0b;box-shadow:0 4px 14px #f59e0b52}.exam-pill-hard.active{background:#ef4444;border-color:#ef4444;box-shadow:0 4px 14px #ef444452}.exam-topics-list{border:1.5px solid var(--line-color);scrollbar-width:thin;border-radius:12px;flex-direction:column;gap:4px;max-height:180px;padding:8px;display:flex;overflow-y:auto}.exam-topic-item{cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:8px;align-items:center;gap:10px;padding:7px 10px;transition:background .14s;display:flex}.exam-topic-item:hover{background:#2563eb0f}.exam-topic-item input[type=checkbox]{display:none}.exam-topic-check{border:1.5px solid var(--line-color);background:0 0;border-radius:5px;flex-shrink:0;width:16px;height:16px;transition:all .15s;position:relative}.exam-topic-item input:checked+.exam-topic-check{background:var(--primary);border-color:var(--primary)}.exam-topic-item input:checked+.exam-topic-check:after{content:"";border:2px solid #fff;border-top:none;border-left:none;width:4px;height:7px;position:absolute;top:2px;left:5px;transform:rotate(45deg)}.exam-topic-all{border-bottom:1px solid var(--line-color);margin-bottom:4px}.exam-topic-text{color:var(--text-color);font-size:13px;font-weight:500}.exam-topic-badge{color:var(--primary);background:#2563eb1a;border-radius:10px;margin-left:6px;padding:1px 7px;font-size:10px;font-weight:700}.exam-cache-banner{color:#10b981;background:#10b98114;border:1px solid #10b98147;border-radius:10px;flex-wrap:wrap;align-items:center;gap:8px;padding:10px 14px;font-size:13px;font-weight:600;display:flex}.exam-cache-banner>span{flex:1}.exam-cache-toggle{cursor:pointer;color:var(--text-light);-webkit-user-select:none;user-select:none;align-items:center;gap:6px;font-weight:500;display:flex}.exam-cache-toggle input{display:none}.exam-error{color:var(--danger);background:#ef444414;border:1px solid #ef444447;border-radius:10px;align-items:flex-start;gap:8px;padding:10px 14px;font-size:13px;font-weight:500;display:flex}.exam-btn-primary{background:linear-gradient(135deg, var(--primary) 0%, #8b5cf6 100%);color:#fff;cursor:pointer;border:none;border-radius:12px;justify-content:center;align-items:center;gap:7px;padding:11px 22px;font-size:14px;font-weight:700;transition:all .2s;display:flex;box-shadow:0 6px 20px #2563eb52}.exam-btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 10px 28px #2563eb70}.exam-btn-primary:disabled{opacity:.45;cursor:not-allowed}.exam-btn-full{width:100%}.exam-btn-secondary{border:1.5px solid var(--line-color);color:var(--text-color);cursor:pointer;background:0 0;border-radius:12px;justify-content:center;align-items:center;gap:7px;padding:11px 22px;font-size:14px;font-weight:600;transition:all .18s;display:flex}.exam-btn-secondary:hover{border-color:var(--text-light);background:#0000000a}.exam-loading-screen{text-align:center;color:var(--text-color);flex-direction:column;justify-content:center;align-items:center;gap:20px;width:100%;max-width:400px;min-height:320px;display:flex}.exam-loading-spinner{color:var(--primary);animation:1s linear infinite spin}.exam-loading-title{letter-spacing:-.4px;margin:0;font-size:22px;font-weight:800}.exam-loading-sub{color:var(--text-light);margin:-8px 0 0;font-size:14px}.exam-loading-countdown{color:#f59e0b;border:4px solid #f59e0b;border-radius:50%;justify-content:center;align-items:center;width:80px;height:80px;font-size:32px;font-weight:900;animation:1s ease-in-out infinite countdownPulse;display:flex;box-shadow:0 0 0 8px #f59e0b1a}@keyframes countdownPulse{0%,to{box-shadow:0 0 0 8px #f59e0b1a}50%{box-shadow:0 0 0 14px #f59e0b0a}}.exam-loading-steps{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:12px;display:flex}.exam-step{border:1px solid var(--border);color:var(--text-secondary);border-radius:20px;padding:4px 12px;font-size:12px}.exam-step-active{color:var(--primary);background:#2563eb1f;border-color:#2563eb66;font-weight:600}.exam-step-done{color:#10b981;background:#10b9811a;border-color:#10b9814d}.exam-loading-badge{color:var(--primary);background:#2563eb1a;border:1px solid #2563eb33;border-radius:20px;align-items:center;gap:6px;margin-top:8px;padding:6px 14px;font-size:12.5px;font-weight:700;display:flex}.exam-question-screen{background:var(--box-bg);border:1px solid var(--line-color);border-radius:20px;flex-direction:column;gap:0;width:100%;max-width:680px;max-height:min(92vh,820px);animation:.22s cubic-bezier(.34,1.4,.64,1) examSlideUp;display:flex;overflow:hidden;box-shadow:0 32px 80px #00000042}.exam-q-topbar{border-bottom:1px solid var(--line-color);flex-shrink:0;align-items:center;gap:12px;padding:14px 16px;display:flex}.exam-q-progress-info{flex:1;align-items:center;gap:10px;display:flex}.exam-q-counter{color:var(--text-light);white-space:nowrap;font-size:12.5px;font-weight:700}.exam-q-progbar{background:var(--line-color);border-radius:3px;flex:1;height:6px;overflow:hidden}.exam-q-progbar-fill{background:linear-gradient(90deg, var(--primary), #8b5cf6);border-radius:3px;height:100%;transition:width .4s}.exam-q-timer{color:var(--text-light);align-items:center;gap:5px;font-size:12px;font-weight:600;display:flex}.exam-q-exit{border:1px solid var(--line-color);width:28px;height:28px;color:var(--text-light);cursor:pointer;background:0 0;border-radius:7px;justify-content:center;align-items:center;transition:all .15s;display:flex}.exam-q-exit:hover{border-color:var(--danger);color:var(--danger);background:#ef444412}.exam-q-meta{flex-shrink:0;align-items:center;gap:10px;padding:12px 20px 0;display:flex}.exam-diff-badge{text-transform:uppercase;letter-spacing:.5px;border-radius:20px;padding:3px 10px;font-size:11px;font-weight:700}.exam-diff-easy{color:#10b981;background:#10b9811f}.exam-diff-medium{color:#f59e0b;background:#f59e0b1f}.exam-diff-hard{color:#ef4444;background:#ef44441f}.exam-q-topic{color:var(--text-light);font-size:13px;font-weight:600}.exam-q-body{scrollbar-width:thin;flex:1;padding:16px 20px;overflow-y:auto}.exam-q-text{color:var(--text-color);letter-spacing:-.2px;margin:0 0 20px;font-size:16px;font-weight:700;line-height:1.6}.exam-options{flex-direction:column;gap:10px;display:flex}.exam-option{border:1.5px solid var(--line-color);background:var(--bg-color);cursor:pointer;text-align:left;width:100%;color:var(--text-color);border-radius:12px;align-items:center;gap:12px;padding:12px 16px;font-size:14px;transition:all .18s;display:flex}.exam-option-idle:hover{border-color:var(--primary);background:#2563eb0d;transform:translate(3px)}.exam-option-correct{color:#10b981!important;background:#10b98114!important;border-color:#10b981!important}.exam-option-wrong{color:#ef4444!important;background:#ef444414!important;border-color:#ef4444!important}.exam-option-dim{opacity:.45;cursor:not-allowed}.exam-opt-letter{border:1.5px solid;border-radius:7px;flex-shrink:0;justify-content:center;align-items:center;width:26px;height:26px;font-size:12px;font-weight:800;display:flex}.exam-opt-text{flex:1;font-weight:500}.exam-opt-icon{flex-shrink:0;margin-left:auto}.exam-explanation{color:var(--text-color);border-radius:12px;margin-top:16px;padding:12px 16px;font-size:13.5px;line-height:1.65;animation:.2s examSlideUp}.exam-expl-correct{background:#10b98112;border:1px solid #10b98147}.exam-expl-wrong{background:#ef444412;border:1px solid #ef444447}.exam-q-footer{border-top:1px solid var(--line-color);flex-shrink:0;justify-content:flex-end;padding:14px 20px;display:flex}.exam-results-screen{background:var(--box-bg);border:1px solid var(--line-color);border-radius:20px;flex-direction:column;width:100%;max-width:620px;max-height:min(92vh,860px);animation:.22s cubic-bezier(.34,1.4,.64,1) examSlideUp;display:flex;overflow:hidden;box-shadow:0 32px 80px #00000042}.exam-results-hdr{border-bottom:1px solid var(--line-color);background:linear-gradient(135deg,#8b5cf60f,#2563eb0a);flex-shrink:0;padding:24px 28px 20px}.exam-results-title{color:var(--text-color);letter-spacing:-.5px;margin:0 0 4px;font-size:22px;font-weight:800}.exam-results-node{color:var(--primary);margin:0;font-size:13px;font-weight:600}.exam-score-card{flex-direction:column;flex-shrink:0;align-items:center;padding:24px 28px 16px;display:flex}.exam-score-circle{border:4px solid var(--score-color,var(--primary));width:96px;height:96px;box-shadow:0 0 0 8px rgba(var(--score-color,37, 99, 235), .08);border-radius:50%;justify-content:center;align-items:baseline;margin-bottom:10px;display:flex}.exam-score-num{color:var(--text-color);font-size:34px;font-weight:900}.exam-score-denom{color:var(--text-light);font-size:16px;font-weight:700}.exam-score-pct{letter-spacing:-1px;font-size:28px;font-weight:900}.exam-score-label{color:var(--text-light);margin-top:4px;font-size:14px;font-weight:600}.exam-stats-row{border-top:1px solid var(--line-color);border-bottom:1px solid var(--line-color);flex-shrink:0;gap:0;display:flex}.exam-stat{border-right:1px solid var(--line-color);flex-direction:column;flex:1;align-items:center;gap:4px;padding:14px 8px;display:flex}.exam-stat:last-child{border-right:none}.exam-stat-val{color:var(--text-color);font-size:18px;font-weight:800}.exam-stat-correct{color:#10b981}.exam-stat-wrong{color:#ef4444}.exam-stat-label{color:var(--text-light);text-transform:uppercase;letter-spacing:.4px;font-size:11px;font-weight:600}.exam-review{scrollbar-width:thin;flex:1;padding:16px 20px;overflow-y:auto}.exam-review-title{color:var(--text-light);text-transform:uppercase;letter-spacing:.5px;margin:0 0 10px;font-size:13px;font-weight:700}.exam-review-list{flex-direction:column;gap:6px;display:flex}.exam-review-item{border:1.5px solid var(--line-color);border-radius:10px;transition:border-color .15s;overflow:hidden}.exam-review-correct{border-color:#10b98147}.exam-review-wrong{border-color:#ef444447}.exam-review-summary{cursor:pointer;color:var(--text-color);align-items:center;gap:10px;padding:10px 14px;font-size:13.5px;font-weight:500;list-style:none;display:flex}.exam-review-summary::-webkit-details-marker{display:none}.exam-review-dot{border-radius:50%;flex-shrink:0;width:10px;height:10px}.exam-review-dot.correct{background:#10b981}.exam-review-dot.wrong{background:#ef4444}.exam-review-qtext{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.exam-review-detail{border-top:1px solid var(--line-color);background:var(--bg-color);color:var(--text-color);flex-direction:column;gap:4px;padding:10px 14px 14px;font-size:13px;display:flex}.exam-review-expl{color:var(--text-light);margin-top:6px;font-style:italic}.exam-results-actions{border-top:1px solid var(--line-color);flex-shrink:0;gap:10px;padding:16px 20px;display:flex}.exam-results-actions .exam-btn-primary,.exam-results-actions .exam-btn-secondary{flex:1}@media (width<=480px){.exam-confirm-modal{padding:28px 20px 24px}.exam-setup-body{padding:14px 16px}.exam-q-text{font-size:14.5px}.exam-option{padding:10px 12px;font-size:13px}.exam-stats-row{flex-wrap:wrap}.exam-stat{min-width:50%}}.ph-page{background:var(--bg-color);min-height:100vh;color:var(--text-color)}.ph-topbar{background:var(--box-bg);border-bottom:1px solid var(--border);z-index:50;align-items:center;gap:14px;padding:14px 24px;display:flex;position:sticky;top:0}.ph-back-btn{border:1px solid var(--border);cursor:pointer;color:var(--text-color);background:0 0;border-radius:8px;align-items:center;gap:6px;padding:6px 12px;font-size:13.5px;transition:background .15s;display:flex}.ph-back-btn:hover{background:var(--hover-bg)}.ph-topbar-title{color:var(--text-color);font-size:16px;font-weight:700}.ph-layout{grid-template-columns:300px 1fr;gap:0;height:calc(100vh - 53px);display:grid}.ph-sidebar{border-right:1px solid var(--border);scrollbar-width:thin;scrollbar-color:var(--line-color) transparent;flex-direction:column;gap:14px;padding:20px 16px;display:flex;overflow-y:auto}.ph-main{scrollbar-width:thin;scrollbar-color:var(--line-color) transparent;flex-direction:column;gap:16px;padding:20px 24px;display:flex;overflow-y:auto}.ph-user-card{background:var(--box-bg);border:1px solid var(--border);text-align:center;border-radius:16px;flex-direction:column;align-items:center;gap:10px;padding:20px 16px;display:flex}.ph-user-avatar{color:#fff;background:linear-gradient(135deg,#6366f1,#8b5cf6);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:64px;height:64px;font-size:26px;font-weight:700;display:flex;box-shadow:0 4px 16px #6366f159}.ph-user-info{width:100%}.ph-user-name{font-size:16px;font-weight:700}.ph-user-email{color:var(--text-secondary);margin-top:2px;font-size:12px}.ph-user-stats{border-top:1px solid var(--border);gap:0;width:100%;margin-top:6px;padding-top:12px;display:flex}.ph-ustat{flex-direction:column;flex:1;align-items:center;display:flex}.ph-ustat-val{color:var(--primary);font-size:18px;font-weight:700}.ph-ustat-lbl{color:var(--text-secondary);margin-top:1px;font-size:10px}.ph-filter-row{flex-wrap:wrap;gap:6px;display:flex}.ph-filter-btn{border:1px solid var(--border);color:var(--text-secondary);cursor:pointer;background:0 0;border-radius:20px;padding:5px 13px;font-size:12.5px;font-weight:500;transition:all .15s}.ph-filter-btn:hover{background:var(--hover-bg)}.ph-filter-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}.ph-timeline{flex-direction:column;gap:8px;display:flex}.ph-loading{color:var(--text-secondary);flex-direction:column;align-items:center;gap:12px;padding:48px;display:flex}.ph-empty{text-align:center;color:var(--text-secondary);padding:48px 20px;font-size:14px}.ph-item{background:var(--box-bg);border:1px solid var(--border);border-radius:12px;align-items:flex-start;gap:12px;padding:14px 16px;transition:border-color .15s;display:flex}.ph-item:hover{border-color:var(--primary)}.ph-item-visit{border-left:3px solid #3b82f6}.ph-item-exam{border-left:3px solid #8b5cf6}.ph-item-icon{background:var(--hover-bg);color:#3b82f6;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;display:flex}.ph-item-body{flex:1;min-width:0}.ph-item-title{margin-bottom:3px;font-size:14px;font-weight:600;display:block}.ph-item-title-row{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:4px;display:flex}.ph-item-meta{color:var(--text-secondary);align-items:center;gap:4px;font-size:12px;display:flex}.ph-item-meta-row{flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:8px;display:flex}.ph-item-score{align-items:center;gap:4px;font-size:13px;font-weight:600;display:flex}.ph-item-time{color:var(--text-secondary);white-space:nowrap;flex-shrink:0;font-size:11.5px}.ph-item-actions{flex-wrap:wrap;gap:6px;display:flex}.ph-action-btn{border:1px solid var(--border);color:var(--text-secondary);cursor:pointer;background:0 0;border-radius:6px;align-items:center;gap:4px;padding:4px 10px;font-size:12px;font-weight:500;transition:all .15s;display:flex}.ph-action-btn:hover{background:var(--hover-bg);color:var(--text-color);border-color:var(--primary)}.ph-action-reattempt{color:#8b5cf6;border-color:#8b5cf659}.ph-action-reattempt:hover{color:#8b5cf6;background:#8b5cf614;border-color:#8b5cf6}.ph-modal-overlay{z-index:1000;background:#00000073;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.ph-modal{background:var(--box-bg);border-radius:18px;width:100%;max-width:420px;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px #00000040}.ph-modal-wide{max-width:600px}.ph-modal-hdr{background:var(--box-bg);z-index:2;justify-content:space-between;align-items:center;padding:18px 20px 0;display:flex;position:sticky;top:0}.ph-modal-title{font-size:16px;font-weight:700}.ph-modal-close{cursor:pointer;color:var(--text-secondary);background:0 0;border:none;border-radius:6px;padding:4px}.ph-modal-close:hover{background:var(--hover-bg)}.ph-modal-body{flex-direction:column;align-items:center;gap:12px;padding:20px;display:flex}.ph-modal-topic{color:var(--text-secondary);margin:0;font-size:14px}.ph-score-circle{border:5px solid var(--score-color,#10b981);border-radius:50%;flex-direction:column;justify-content:center;align-items:center;width:90px;height:90px;margin-top:8px;display:flex}.ph-score-num{color:var(--score-color,#10b981);font-size:28px;font-weight:800;line-height:1}.ph-score-denom{color:var(--text-secondary);font-size:13px}.ph-score-pct{font-size:24px;font-weight:800}.ph-score-label{color:var(--text-secondary);font-size:14px}.ph-stats-row{flex-wrap:wrap;justify-content:center;gap:16px;margin-top:4px;display:flex}.ph-stat{flex-direction:column;align-items:center;gap:2px;display:flex}.ph-stat-val{font-size:18px;font-weight:700}.ph-stat-lbl{color:var(--text-secondary);font-size:11px}.ph-stat-date{color:var(--text-secondary);margin:0;font-size:12px}.ph-qlist{align-items:stretch;gap:6px;padding:12px 16px}.ph-q-item{border:1px solid var(--border);border-radius:10px;overflow:hidden}.ph-q-toggle{cursor:pointer;text-align:left;width:100%;color:var(--text-color);background:0 0;border:none;align-items:center;gap:8px;padding:10px 12px;font-size:13px;transition:background .15s;display:flex}.ph-q-toggle:hover{background:var(--hover-bg)}.ph-q-num{color:var(--primary);white-space:nowrap;flex-shrink:0;font-weight:700}.ph-q-text{flex:1;font-weight:500}.ph-q-correct-badge{color:#10b981;white-space:nowrap;background:#10b9811f;border-radius:10px;padding:2px 7px;font-size:11px;font-weight:600}.ph-q-body{flex-direction:column;gap:4px;padding:0 12px 12px;display:flex}.ph-q-opt{border:1px solid var(--border);border-radius:8px;align-items:center;gap:8px;padding:7px 10px;font-size:13px;display:flex}.ph-q-opt-correct{background:#10b98112;border-color:#10b98166}.ph-q-opt-letter{color:var(--text-secondary);flex-shrink:0;width:18px;font-weight:700}.ph-q-expl{color:var(--text-secondary);background:var(--hover-bg);border-radius:6px;margin:6px 0 0;padding:8px;font-size:12px}@media (width<=860px){.ph-layout{grid-template-columns:1fr;height:auto}.ph-sidebar{border-right:none;border-bottom:1px solid var(--border);height:auto;overflow:visible}}@media (width<=600px){.ph-user-stats{justify-content:space-around;width:100%}.ph-modal{border-radius:14px}.ph-main,.ph-sidebar{padding:14px}}.ph-item-node-link{cursor:pointer;color:var(--primary);text-align:left;background:0 0;border:none;align-items:center;gap:4px;padding:0;font-family:inherit;font-size:14px;font-weight:600;line-height:1.35;transition:color .15s;display:inline-flex}.ph-item-node-link:hover{color:#1d4ed8;text-decoration:underline}.ph-ai-top-link{cursor:pointer;color:#8b5cf6;background:#8b5cf60f;border:1px solid #8b5cf62e;border-radius:12px;align-items:center;gap:4px;padding:3px 10px;font-family:inherit;font-size:12px;font-weight:600;transition:all .15s;display:inline-flex}.ph-ai-top-link:hover{background:#8b5cf624;border-color:#8b5cf659;text-decoration:underline}.ph-ai-top-cnt{opacity:.75;font-weight:500}.ph-ai-chart{border-top:1px solid var(--line-color);margin-top:14px;padding-top:12px}.ph-ai-chart-title{letter-spacing:.8px;text-transform:uppercase;color:var(--text-light);align-items:center;gap:5px;margin-bottom:10px;font-size:11px;font-weight:700;display:flex}.ph-ai-bars{align-items:flex-end;gap:6px;height:80px;display:flex}.ph-ai-bar-col{flex-direction:column;flex:1;justify-content:flex-end;align-items:center;gap:3px;height:100%;display:flex}.ph-ai-bar-count{color:#8b5cf6;font-size:10px;font-weight:700}.ph-ai-bar-wrap{justify-content:center;align-items:flex-end;width:100%;height:60px;display:flex}.ph-ai-bar{background:linear-gradient(#8b5cf6,#6366f1);border-radius:3px 3px 0 0;width:70%;min-width:6px;min-height:2px;transition:height .3s}.ph-ai-bar-day{color:var(--text-light);font-size:10px;font-weight:500}.aim-modal{max-width:540px!important}.aim-provider-list{flex-direction:column;gap:6px;margin-bottom:4px;display:flex}.aim-provider-btn{border:1.5px solid var(--line-color);cursor:pointer;text-align:left;color:var(--text-color);background:0 0;border-radius:10px;align-items:center;gap:12px;width:100%;padding:11px 14px;transition:border-color .15s,background .15s;display:flex}.aim-provider-btn:hover{background:#8b5cf60a;border-color:#8b5cf6}.aim-provider-btn.active{background:#8b5cf614;border-color:#8b5cf6}.aim-provider-icon{color:#8b5cf6;flex-shrink:0}.aim-provider-text{flex-direction:column;flex:1;gap:1px;display:flex}.aim-provider-text strong{font-size:13.5px}.aim-provider-text small{color:var(--text-light);font-size:11.5px}.aim-check{color:#8b5cf6;flex-shrink:0;font-size:13px;font-weight:700}.aim-key-block{flex-direction:column;gap:6px;margin-top:12px;display:flex}.aim-label{color:var(--text-light);align-items:center;gap:6px;font-size:12px;font-weight:700;display:flex}.aim-label-hint{opacity:.75;font-weight:400}.aim-label-badge{border-radius:8px;padding:1px 6px;font-size:10px;font-weight:600}.aim-badge-free{color:#10b981;background:#10b9811f}.aim-warn{color:#ef4444;align-items:center;gap:5px;margin:0;font-size:12px;display:flex}.aim-model-row{flex-direction:column;gap:14px;display:flex}.aim-model-block{flex-direction:column;gap:6px;display:flex}.aim-model-hint{color:var(--text-light);margin:0;font-size:11.5px}.aim-model-hint code{color:#8b5cf6;background:#8b5cf61a;border-radius:3px;padding:0 4px;font-family:Fira Code,monospace;font-size:11px}.aim-ref-section h3{margin-bottom:10px}.aim-ref-grid{flex-direction:column;gap:6px;display:flex}.aim-ref-card{border:1px solid var(--line-color);background:var(--bg-color);border-radius:8px;grid-template-columns:auto auto 1fr;align-items:center;gap:10px;padding:8px 12px;display:grid}.aim-ref-name{color:#8b5cf6;white-space:nowrap;font-family:Fira Code,monospace;font-size:11.5px;font-weight:600}.aim-ref-via{color:var(--text-light);background:var(--line-color);white-space:nowrap;border-radius:6px;padding:2px 7px;font-size:10.5px}.aim-ref-note{color:var(--text-light);font-size:11.5px}@media (width<=500px){.aim-ref-card{grid-template-columns:1fr;gap:3px}.aim-ref-name{white-space:normal}}.aichat-fab{z-index:1200;color:#fff;cursor:pointer;background:linear-gradient(135deg,#6366f1 0%,#8b5cf6 100%);border:none;border-radius:50%;justify-content:center;align-items:center;width:50px;height:50px;transition:transform .2s cubic-bezier(.34,1.56,.64,1),box-shadow .2s,background .2s;display:flex;position:fixed;bottom:28px;right:28px;box-shadow:0 4px 18px #6366f180,0 1px 4px #00000026}.aichat-fab:hover{transform:translateY(-3px)scale(1.08);box-shadow:0 8px 28px #6366f199}.aichat-fab-active{background:linear-gradient(135deg,#64748b 0%,#475569 100%);box-shadow:0 4px 14px #00000040}.aichat-fab-active:hover{background:linear-gradient(135deg,#475569,#334155)}.aichat-panel{background:var(--box-bg);border:1px solid var(--line-color);z-index:1100;opacity:0;border-radius:18px;flex-direction:column;width:376px;transition:transform .3s cubic-bezier(.4,0,.2,1),opacity .3s;display:flex;position:fixed;top:90px;bottom:12px;right:10px;overflow:hidden;transform:translate(calc(100% + 18px));box-shadow:0 24px 60px #0003,0 6px 20px #0000001a,inset 0 0 0 1px #ffffff0a}.aichat-panel-open{opacity:1;transform:translate(0)}@media (width<=520px){.aichat-panel{border:none;border-radius:0;width:100vw;top:0;bottom:0;right:0}.aichat-fab{bottom:22px;right:16px}}.aichat-header{border-bottom:1px solid var(--line-color);background:var(--box-bg);flex-shrink:0;align-items:center;gap:8px;padding:11px 10px 11px 14px;display:flex}.aichat-header-brand{flex:1;align-items:center;gap:8px;display:flex}.aichat-header-avatar{color:#fff;background:linear-gradient(135deg,#6366f1,#8b5cf6);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;display:flex}.aichat-header-actions{align-items:center;gap:2px;display:flex}.aichat-hdr-btn{cursor:pointer;color:var(--text-light);background:0 0;border:none;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;transition:background .14s,color .14s;display:flex}.aichat-hdr-btn:hover{color:#6366f1;background:#6366f11a}.aichat-hdr-btn-active{color:#6366f1;background:#6366f124}.aichat-conv-title-btn{cursor:pointer;background:0 0;border:none;border-radius:5px;align-items:center;gap:4px;max-width:190px;padding:2px 5px;transition:background .14s;display:flex}.aichat-conv-title-btn:hover{background:#6366f114}.aichat-conv-title-text{color:var(--text-color);white-space:nowrap;text-overflow:ellipsis;max-width:160px;font-size:12px;font-weight:600;overflow:hidden}.aichat-conv-title-pencil{color:var(--text-light);opacity:0;flex-shrink:0;transition:opacity .15s}.aichat-conv-title-btn:hover .aichat-conv-title-pencil{opacity:1}.aichat-conv-name-input{background:var(--bg-color);color:var(--text-color);border:1px solid #6366f1;border-radius:5px;outline:none;width:185px;padding:2px 7px;font-size:12px;font-weight:600;box-shadow:0 0 0 2px #6366f126}.aichat-conv-name-input-list{width:100%;padding:3px 7px;font-size:12px}.aichat-conv-actions{flex-shrink:0;align-items:center;gap:2px;display:flex}.aichat-conv-edit,.aichat-conv-del{cursor:pointer;color:var(--text-light);opacity:0;background:0 0;border:none;border-radius:5px;flex-shrink:0;align-items:center;padding:5px;transition:opacity .15s,color .15s,background .15s;display:flex}.aichat-history-item:hover .aichat-conv-edit,.aichat-history-item:hover .aichat-conv-del{opacity:1}.aichat-conv-edit:hover{color:#6366f1;background:#6366f114}.aichat-conv-del:hover{color:#ef4444;background:#ef444414}.aichat-history{background:var(--box-bg);z-index:10;border-radius:0 0 18px 18px;flex-direction:column;transition:transform .22s cubic-bezier(.4,0,.2,1);display:flex;position:absolute;inset:51px 0 0;transform:translate(-100%)}.aichat-history-open{transform:translate(0)}.aichat-history-hdr{border-bottom:1px solid var(--line-color);flex-shrink:0;align-items:center;gap:6px;height:44px;padding:0 10px 0 6px;display:flex}.aichat-history-title{color:var(--text-color);flex:1;font-size:13px;font-weight:700}.aichat-history-list{scrollbar-width:thin;flex:1;padding:8px 6px;overflow-y:auto}.aichat-history-empty{text-align:center;color:var(--text-light);padding:32px 20px;font-size:13px;line-height:1.6}.aichat-history-item{border-radius:9px;align-items:center;margin-bottom:2px;transition:background .12s;display:flex}.aichat-history-item:hover{background:var(--bg-color)}.aichat-history-item.active{background:#6366f114}.aichat-history-item-btn{cursor:pointer;text-align:left;background:0 0;border:none;border-radius:9px;flex:1;align-items:center;gap:10px;min-width:0;padding:10px 8px;display:flex}.aichat-history-item-icon{color:var(--text-light);flex-shrink:0}.aichat-history-item.active .aichat-history-item-icon{color:#6366f1}.aichat-history-item-info{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.aichat-history-item-title{color:var(--text-color);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:500;line-height:1.3;overflow:hidden}.aichat-history-item.active .aichat-history-item-title{color:#6366f1;font-weight:600}.aichat-history-item-meta{color:var(--text-light);font-size:11px}.aichat-messages{scrollbar-width:thin;scrollbar-color:var(--line-color) transparent;flex-direction:column;flex:1;gap:14px;padding:16px 14px 8px;display:flex;overflow-y:auto}.aichat-messages::-webkit-scrollbar{width:3px}.aichat-messages::-webkit-scrollbar-thumb{background:var(--line-color);border-radius:2px}.aichat-msgs-spacer{flex:1}.aichat-loading-msgs{justify-content:center;padding:20px 0;display:flex}.aichat-empty{text-align:center;flex-direction:column;flex:1;justify-content:flex-end;align-items:center;gap:8px;padding:16px 20px 20px;display:flex}.aichat-empty-avatar{color:#fff;background:linear-gradient(135deg,#6366f1,#8b5cf6);border-radius:50%;justify-content:center;align-items:center;width:56px;height:56px;margin-bottom:6px;display:flex;box-shadow:0 6px 24px #6366f159}.aichat-empty-greeting{color:var(--text-color);letter-spacing:-.02em;margin:0;font-size:18px;font-weight:700}.aichat-empty-text{color:var(--text-light);margin:0;font-size:13px;line-height:1.6}.aichat-empty-sub{color:var(--text-light);opacity:.6;margin-top:2px;font-size:11px}.aichat-chips{flex-wrap:wrap;justify-content:center;gap:7px;margin-top:14px;display:flex}.aichat-chip{border:1px solid var(--line-color);color:var(--text-color);cursor:pointer;white-space:nowrap;background:0 0;border-radius:20px;padding:7px 13px;font-size:12.5px;transition:background .14s,border-color .14s,color .14s}.aichat-chip:hover{color:#6366f1;background:#6366f117;border-color:#6366f1}.aichat-msg{align-items:flex-end;gap:10px;max-width:100%;animation:.18s msgIn;display:flex}@keyframes msgIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.aichat-msg-user{flex-direction:row-reverse}.aichat-msg-assistant{flex-direction:row}.aichat-msg-avatar{color:#fff;background:linear-gradient(135deg,#6366f1,#8b5cf6);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:30px;height:30px;display:flex;box-shadow:0 2px 8px #6366f14d}.aichat-msg-bubble{word-break:break-word;border-radius:18px;max-width:80%;padding:11px 15px;font-size:13.5px;line-height:1.65}.aichat-msg-user .aichat-msg-bubble{color:#fff;background:linear-gradient(135deg,#6366f1,#7c3aed);border-bottom-right-radius:5px;box-shadow:0 2px 12px #6366f14d}.aichat-msg-assistant .aichat-msg-bubble{background:var(--bg-color);border:1px solid var(--line-color);color:var(--text-color);border-bottom-left-radius:5px;box-shadow:0 1px 4px #0000000d}:root.dark .aichat-msg-assistant .aichat-msg-bubble{background:#ffffff0a;border-color:#ffffff14}.aichat-msg-model{color:var(--text-light);opacity:.6;margin-top:6px;font-size:10px;font-style:italic}.aichat-typing{align-items:center;gap:5px;min-width:64px;padding:14px 18px!important;display:flex!important}.aichat-typing span{opacity:.35;background:#8b5cf6;border-radius:50%;width:7px;height:7px;animation:1.3s ease-in-out infinite aichat-bounce}.aichat-typing span:nth-child(2){animation-delay:.22s}.aichat-typing span:nth-child(3){animation-delay:.44s}@keyframes aichat-bounce{0%,75%,to{opacity:.35;transform:translateY(0)}35%{opacity:1;transform:translateY(-7px)}}.aichat-error{color:#dc2626;background:#ef444414;border:1px solid #ef444438;border-radius:11px;align-items:flex-start;gap:8px;padding:11px 14px;font-size:13px;line-height:1.5;display:flex}:root.dark .aichat-error{color:#fca5a5;background:#ef44441a;border-color:#ef44444d}.aichat-input-bar{background:var(--box-bg);border-top:1px solid var(--line-color);flex-shrink:0;padding:10px 12px 14px}.aichat-input-wrap{background:var(--bg-color);border:1.5px solid var(--line-color);border-radius:16px;flex-direction:column;gap:8px;padding:12px 14px 10px;transition:border-color .16s,box-shadow .16s;display:flex}.aichat-input-wrap:focus-within{border-color:#8b5cf6;box-shadow:0 0 0 3px #8b5cf61a}.aichat-input-wrap.disabled{opacity:.6}.aichat-input{width:100%;color:var(--text-color);resize:none;scrollbar-width:thin;background:0 0;border:none;outline:none;min-height:22px;max-height:180px;font-family:inherit;font-size:14px;line-height:1.6;overflow-y:auto}.aichat-input::placeholder{color:var(--text-light);opacity:.65}.aichat-input-row{justify-content:space-between;align-items:center;gap:8px;display:flex}.aichat-input-hint{color:var(--text-light);opacity:.55;white-space:nowrap;font-size:10.5px}.aichat-send-btn{color:#fff;cursor:pointer;background:linear-gradient(135deg,#6366f1,#7c3aed);border:none;border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:34px;height:34px;transition:opacity .15s,transform .12s,box-shadow .15s;display:flex;box-shadow:0 2px 8px #6366f14d}.aichat-send-btn:hover:not(:disabled){transform:scale(1.07);box-shadow:0 4px 14px #6366f180}.aichat-send-btn:disabled{background:var(--line-color);box-shadow:none;cursor:not-allowed;opacity:.5}@keyframes aichat-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.aichat-spin{animation:.75s linear infinite aichat-spin}.aichat-confirm-overlay{z-index:1300;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background:#00000080;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.aichat-confirm-box{background:var(--box-bg);border:1px solid var(--line-color);border-radius:16px;width:100%;max-width:340px;padding:24px 26px;animation:.18s ampFadeIn;box-shadow:0 24px 60px #00000047}.aichat-confirm-box p{color:var(--text-color);margin:0 0 20px;font-size:14px;line-height:1.6}.aichat-confirm-btns{gap:10px;display:flex}.aichat-confirm-yes{cursor:pointer;color:#fff;background:#6366f1;border:none;border-radius:9px;flex:1;padding:10px;font-size:13.5px;font-weight:600;transition:background .15s,transform .1s}.aichat-confirm-yes:hover{background:#4f46e5;transform:translateY(-1px)}.aichat-confirm-danger{background:#ef4444}.aichat-confirm-danger:hover{background:#dc2626}.aichat-confirm-no{border:1px solid var(--line-color);cursor:pointer;color:var(--text-color);background:0 0;border-radius:9px;flex:1;padding:10px;font-size:13.5px;font-weight:600;transition:background .15s}.aichat-confirm-no:hover{background:var(--line-color)}.chat-text{flex-direction:column;gap:5px;display:flex}.chat-md-h{color:var(--text-color);letter-spacing:-.01em;margin:6px 0 2px;font-size:13.5px;font-weight:700}.chat-md-p{margin:0;line-height:1.68}.chat-text ul{margin:4px 0;padding-left:20px}.chat-text li{margin:3px 0;line-height:1.6}.chat-inline-code{color:#6366f1;background:#6366f11a;border:1px solid #6366f126;border-radius:5px;padding:1px 6px;font-family:Fira Code,Cascadia Code,Consolas,monospace;font-size:12px}.aichat-msg-user .chat-inline-code{color:#fff;background:#ffffff2e;border-color:#fff3}.amp-page{background:var(--bg-color);min-height:100vh;color:var(--text-color);flex-direction:column;display:flex}.amp-topbar{z-index:50;background:var(--box-bg);border-bottom:1px solid var(--line-color);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);align-items:center;gap:14px;height:58px;padding:0 24px;display:flex;position:sticky;top:0}.amp-back{border:1px solid var(--line-color);color:var(--text-color);cursor:pointer;white-space:nowrap;background:0 0;border-radius:8px;align-items:center;gap:6px;padding:7px 14px;font-size:13.5px;font-weight:500;transition:background .15s,border-color .15s;display:flex}.amp-back:hover{background:var(--line-color)}.amp-topbar-title{color:var(--text-color);flex:1;align-items:center;gap:8px;font-size:16px;font-weight:700;display:flex}.amp-toast{border-radius:8px;align-items:center;gap:7px;padding:7px 14px;font-size:13px;font-weight:500;animation:.2s ampFadeIn;display:flex}.amp-toast-ok{color:#10b981;background:#10b9811f}.amp-toast-err{color:#ef4444;background:#ef44441f}@keyframes ampFadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}.amp-layout{grid-template-columns:360px 1fr;height:calc(100vh - 58px);display:grid}.amp-left{border-right:1px solid var(--line-color);scrollbar-width:thin;scrollbar-color:var(--line-color) transparent;flex-direction:column;gap:20px;padding:20px 18px;display:flex;overflow-y:auto}.amp-right{scrollbar-width:thin;scrollbar-color:var(--line-color) transparent;flex-direction:column;gap:20px;padding:20px 24px;display:flex;overflow-y:auto}.amp-body{flex-direction:column;flex:1;gap:32px;width:100%;padding:24px 20px 40px;display:flex}.amp-section{background:var(--box-bg);border:1px solid var(--line-color);border-radius:16px;padding:24px}.amp-section-title{color:var(--text-color);align-items:center;gap:8px;margin:0 0 6px;font-size:15px;font-weight:700;display:flex}.amp-section-sub{color:var(--text-light);margin:0 0 20px;font-size:13px;line-height:1.55}.amp-provider-grid{flex-direction:column;gap:10px;display:flex}.amp-provider-card{border:2px solid var(--line-color);cursor:pointer;text-align:left;color:var(--text-color);background:0 0;border-radius:13px;flex-direction:row;align-items:center;gap:12px;padding:14px 16px;transition:border-color .15s,background .15s;display:flex}.amp-provider-card:hover{border-color:var(--pcolor,#6366f1);background:color-mix(in srgb, var(--pcolor,#6366f1) 5%, transparent)}.amp-provider-card-active{border-color:var(--pcolor,#6366f1)!important;background:color-mix(in srgb, var(--pcolor,#6366f1) 8%, transparent)!important}.amp-card-icon{border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:38px;height:38px;display:flex}.amp-card-text{flex:1;min-width:0}.amp-card-right{flex-direction:column;flex-shrink:0;align-items:flex-end;gap:4px;display:flex}.amp-badge{letter-spacing:.04em;white-space:nowrap;border-radius:5px;padding:2px 7px;font-size:10px;font-weight:700}.amp-card-name{font-size:13.5px;font-weight:700}.amp-card-tagline{color:var(--text-light);font-size:11px}.amp-card-check{color:var(--pcolor,#6366f1);align-items:center;gap:3px;font-size:10.5px;font-weight:700;display:flex}.amp-detail-section{border-color:color-mix(in srgb, var(--pcolor,#6366f1) 30%, var(--line-color))}.amp-detail-header{align-items:flex-start;gap:16px;margin-bottom:16px;display:flex}.amp-detail-icon{border-radius:14px;flex-shrink:0;justify-content:center;align-items:center;width:52px;height:52px;display:flex}.amp-detail-name{margin:0 0 6px;font-size:17px;font-weight:700}.amp-detail-desc{color:var(--text-light);margin:0;font-size:13.5px;line-height:1.6}.amp-detail-grid{grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px;display:grid}.amp-detail-card{background:var(--bg-color);border:1px solid var(--line-color);border-radius:10px;align-items:flex-start;gap:10px;padding:13px 14px;display:flex}.amp-dc-label{color:var(--text-light);margin-bottom:3px;font-size:11px;font-weight:500}.amp-dc-val{color:var(--text-color);font-size:13.5px;font-weight:600}.amp-best-for{margin-bottom:16px}.amp-best-label{color:var(--text-light);text-transform:uppercase;letter-spacing:.06em;align-items:center;gap:6px;margin-bottom:10px;font-size:12px;font-weight:600;display:flex}.amp-best-list{flex-wrap:wrap;gap:8px;display:flex}.amp-best-item{background:color-mix(in srgb, var(--pcolor,#6366f1) 10%, transparent);color:var(--pcolor,#6366f1);border-radius:7px;align-items:center;gap:5px;padding:5px 11px;font-size:12.5px;font-weight:500;display:flex}.amp-config-block{background:var(--bg-color);border:1px solid var(--line-color);border-radius:11px;padding:16px}.amp-config-note{color:var(--text-light);margin:0 0 14px;font-size:13px;line-height:1.55}.amp-puter-note{color:#10b981;align-items:center;gap:8px;font-size:13.5px;font-weight:500;display:flex}.amp-field-group{margin-bottom:14px}.amp-field-group:last-child{margin-bottom:0}.amp-field-label{color:var(--text-color);margin-bottom:7px;font-size:12.5px;font-weight:600;display:block}.amp-field-hint{color:var(--text-light);margin-left:4px;font-weight:400}.amp-field-row{align-items:center;gap:8px;display:flex}.amp-key-wrap{border:1px solid var(--line-color);background:var(--box-bg);border-radius:8px;flex:1;align-items:center;display:flex;overflow:hidden}.amp-input{border:1px solid var(--line-color);background:var(--box-bg);color:var(--text-color);border-radius:8px;outline:none;flex:1;min-width:0;padding:9px 12px;font-family:Fira Code,monospace;font-size:13px}.amp-key-wrap .amp-input{border:none;border-radius:0;flex:1}.amp-input:focus{border-color:#6366f1}.amp-eye-btn{height:38px;color:var(--text-light);cursor:pointer;background:0 0;border:none;align-items:center;padding:0 10px;display:flex}.amp-eye-btn:hover{color:var(--text-color)}.amp-save-btn{color:#fff;cursor:pointer;white-space:nowrap;background:#6366f1;border:none;border-radius:8px;flex-shrink:0;align-items:center;gap:5px;padding:9px 16px;font-size:13px;font-weight:600;transition:background .15s;display:flex}.amp-save-btn:hover{background:#4f46e5}.amp-warn{color:#f59e0b;align-items:center;gap:5px;margin:8px 0 0;font-size:12px;display:flex}.amp-chat-models-grid{grid-template-columns:1fr 1fr;gap:16px;display:grid}@media (width<=620px){.amp-chat-models-grid{grid-template-columns:1fr}}.amp-chat-model-card{border:1px solid var(--line-color);background:var(--bg-color);border-radius:12px;padding:18px}.amp-cm-header{align-items:center;gap:8px;margin-bottom:12px;display:flex}.amp-cm-title{flex:1;font-size:13.5px;font-weight:600}.amp-cm-quickpick{flex-wrap:wrap;gap:7px;margin-bottom:4px;display:flex}.amp-cm-pill{border:1px solid var(--line-color);color:var(--text-light);cursor:pointer;background:0 0;border-radius:7px;padding:5px 11px;font-size:12px;transition:all .13s}.amp-cm-pill:hover{color:#6366f1;border-color:#6366f1}.amp-cm-pill.active{color:#fff;background:#6366f1;border-color:#6366f1;font-weight:600}.amp-ref-list{flex-direction:column;gap:8px;display:flex}.amp-ref-item{border:1px solid var(--line-color);background:var(--bg-color);border-radius:9px;flex-direction:column;gap:5px;padding:10px 12px;transition:border-color .13s;display:flex}.amp-ref-item:hover{border-color:#6366f166}.amp-ref-item-top{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:8px;display:flex}.amp-ref-code{color:#6366f1;word-break:break-all;background:#6366f114;border-radius:5px;flex:1;padding:2px 7px;font-family:Fira Code,monospace;font-size:11.5px;line-height:1.5}.amp-ref-badges{flex-wrap:wrap;flex-shrink:0;align-items:center;gap:4px;display:flex}.amp-ref-via-badge{color:#6366f1;white-space:nowrap;background:#6366f11a;border-radius:4px;padding:2px 6px;font-size:10px;font-weight:600}.amp-ref-ctx-badge{color:#10b981;white-space:nowrap;background:#10b9811a;border-radius:4px;padding:2px 6px;font-size:10px;font-weight:600}.amp-ref-tag{color:#f59e0b;white-space:nowrap;background:#f59e0b1f;border-radius:4px;padding:2px 6px;font-size:10px;font-weight:700}.amp-ref-desc{color:var(--text-light);font-size:12px;line-height:1.45}@media (width<=900px){.amp-layout{grid-template-columns:1fr;height:auto}.amp-left{border-right:none;border-bottom:1px solid var(--line-color)}}@media (width<=600px){.amp-section{padding:16px}.amp-detail-grid{grid-template-columns:1fr}.amp-ref-thead,.amp-ref-row{grid-template-columns:2fr 1fr}.amp-ref-thead span:nth-child(3),.amp-ref-thead span:nth-child(4),.amp-ref-row span:nth-child(3),.amp-ref-row span:nth-child(4){display:none}}.ph-chat-list{flex-direction:column;gap:10px;display:flex}.ph-chat-conv{border:1px solid var(--line-color);background:var(--box-bg);border-radius:12px;transition:box-shadow .15s;overflow:hidden}.ph-chat-conv:hover{box-shadow:var(--shadow-soft)}.ph-chat-conv-hdr{cursor:pointer;text-align:left;background:0 0;border:none;align-items:center;gap:12px;width:100%;padding:14px 16px;transition:background .12s;display:flex}.ph-chat-conv-hdr:hover{background:var(--bg-color)}.ph-chat-conv-icon{color:#6366f1;background:#6366f11a;border-radius:9px;flex-shrink:0;justify-content:center;align-items:center;width:34px;height:34px;display:flex}.ph-chat-conv-info{flex-direction:column;flex:1;gap:3px;min-width:0;display:flex}.ph-chat-conv-title{color:var(--text-color);white-space:nowrap;text-overflow:ellipsis;font-size:14px;font-weight:600;overflow:hidden}.ph-chat-conv-meta{color:var(--text-light);font-size:12px}.ph-chat-conv-chevron{color:var(--text-light);flex-shrink:0;transition:transform .2s}.ph-chat-conv-chevron.rotated{transform:rotate(90deg)}.ph-chat-messages{border-top:1px solid var(--line-color);scrollbar-width:thin;flex-direction:column;gap:0;max-height:420px;display:flex;overflow-y:auto}.ph-chat-msg{border-bottom:1px solid var(--line-color);align-items:flex-start;gap:10px;padding:12px 16px;display:flex}.ph-chat-msg:last-child{border-bottom:none}.ph-chat-msg-user{background:0 0}.ph-chat-msg-assistant{background:#6366f108}:root.dark .ph-chat-msg-assistant{background:#6366f10d}.ph-chat-msg-role{border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:10px;font-weight:700;display:flex}.ph-chat-msg-user .ph-chat-msg-role{color:#6366f1;background:#6366f11f}.ph-chat-msg-assistant .ph-chat-msg-role{color:#fff;background:linear-gradient(135deg,#6366f1,#8b5cf6)}.ph-chat-msg-content{color:var(--text-color);word-break:break-word;white-space:pre-wrap;flex:1;font-size:13.5px;line-height:1.6}.ph-chat-empty{text-align:center;color:var(--text-light);padding:24px;font-size:13px}.pomo-fab{z-index:1200;color:#fff;cursor:pointer;background:linear-gradient(135deg,#ef4444,#dc2626);border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;gap:4px;width:50px;height:50px;transition:transform .2s cubic-bezier(.34,1.56,.64,1),box-shadow .2s,width .2s;display:flex;position:fixed;bottom:28px;left:28px;overflow:hidden;box-shadow:0 4px 18px #ef444473,0 1px 4px #00000026}.pomo-fab:hover{transform:translateY(-3px)scale(1.08);box-shadow:0 8px 28px #ef44448c}.pomo-fab-running{border-radius:25px;width:auto;min-width:50px;padding:0 14px;animation:2s infinite pomoFabPulse}@keyframes pomoFabPulse{0%,to{box-shadow:0 4px 18px #ef444473}50%{box-shadow:0 4px 28px #ef4444cc}}.pomo-fab-badge{letter-spacing:.02em;font-size:12px;font-weight:700}.pomo-panel{background:var(--box-bg);border:1px solid var(--line-color);z-index:1199;border-radius:18px;width:260px;animation:.22s cubic-bezier(.34,1.2,.64,1) pomoIn;position:fixed;bottom:88px;left:28px;overflow:hidden;box-shadow:0 16px 48px #0000002e,0 4px 16px #0000001a}@keyframes pomoIn{0%{opacity:0;transform:translateY(12px)scale(.97)}to{opacity:1;transform:none}}.pomo-hdr{border-bottom:1px solid var(--line-color);justify-content:space-between;align-items:center;padding:12px 14px 10px;display:flex}.pomo-hdr-left{color:var(--text-color);align-items:center;gap:7px;font-size:13px;font-weight:600;display:flex}.pomo-sessions-badge{color:#ef4444;background:#ef44441a;border-radius:20px;padding:2px 7px;font-size:11px;font-weight:600}.pomo-hdr-close{cursor:pointer;color:var(--text-light);background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;width:24px;height:24px;transition:background .12s;display:flex}.pomo-hdr-close:hover{background:var(--bg-color)}.pomo-mode-tabs{gap:6px;padding:10px 12px 4px;display:flex}.pomo-tab{border:1px solid var(--line-color);color:var(--text-light);cursor:pointer;background:0 0;border-radius:8px;flex:1;justify-content:center;align-items:center;gap:4px;padding:6px 8px;font-size:11.5px;font-weight:600;transition:background .14s,border-color .14s,color .14s;display:flex}.pomo-tab.active{color:#ef4444;background:#ef44441a;border-color:#ef4444}.pomo-ring-wrap{width:140px;height:140px;margin:10px auto 6px;position:relative}.pomo-svg{width:100%;height:100%}.pomo-ring-track{fill:none;stroke:var(--line-color);stroke-width:6px}.pomo-ring-fill{fill:none;stroke:#ef4444;stroke-width:6px;stroke-linecap:round;transition:stroke-dashoffset 1s linear}.pomo-break-fill{stroke:#10b981}.pomo-center{flex-direction:column;justify-content:center;align-items:center;gap:2px;display:flex;position:absolute;inset:0}.pomo-time-display{color:var(--text-color);letter-spacing:-.04em;font-variant-numeric:tabular-nums;font-size:26px;font-weight:800}.pomo-mode-lbl{color:var(--text-light);text-transform:uppercase;letter-spacing:.06em;font-size:11px}.pomo-controls{justify-content:center;align-items:center;gap:10px;padding:4px 16px 12px;display:flex}.pomo-ctrl-btn{cursor:pointer;color:var(--text-light);background:0 0;border:none;border-radius:10px;justify-content:center;align-items:center;width:36px;height:36px;transition:background .13s,color .13s;display:flex}.pomo-ctrl-btn:hover{background:var(--bg-color);color:var(--text-color)}.pomo-play-btn{color:#fff;background:linear-gradient(135deg,#ef4444,#dc2626);border-radius:50%;width:48px;height:48px;transition:transform .15s,box-shadow .15s;box-shadow:0 4px 14px #ef444466}.pomo-play-btn:hover{color:#fff;background:linear-gradient(135deg,#ef4444,#dc2626);transform:scale(1.08);box-shadow:0 6px 20px #ef44448c}.pomo-play-btn.running{background:linear-gradient(135deg,#f97316,#ea580c);box-shadow:0 4px 14px #f9731666}.pomo-tip{color:var(--text-light);text-align:center;margin:0;padding:0 16px 14px;font-size:11px;line-height:1.5}.aichat-msg-footer{justify-content:space-between;align-items:center;gap:8px;margin-top:6px;display:flex}.aichat-pin-btn{cursor:pointer;color:var(--text-light);opacity:.5;background:0 0;border:none;border-radius:5px;flex-shrink:0;align-items:center;padding:3px 5px;transition:opacity .15s,color .15s;display:flex}.aichat-pin-btn:hover,.aichat-pin-btn.pinned{opacity:1;color:#eab308}.detail-meta-row{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px;display:flex}.detail-diff-group{align-items:center;gap:6px;display:flex}.detail-diff-label{color:var(--text-light);font-size:12px;font-weight:500}.detail-diff-btn{border:1px solid var(--line-color);color:var(--text-light);cursor:pointer;text-transform:capitalize;background:0 0;border-radius:20px;padding:4px 12px;font-size:11.5px;font-weight:600;transition:background .14s,border-color .14s,color .14s}.detail-diff-btn:hover{border-color:var(--text-light);color:var(--text-color)}.detail-chat-btn{color:#6366f1;cursor:pointer;white-space:nowrap;background:#6366f112;border:1px solid #6366f14d;border-radius:10px;align-items:center;gap:6px;padding:6px 14px;font-size:12.5px;font-weight:600;transition:background .14s,border-color .14s;display:flex}.detail-chat-btn:hover{background:#6366f124;border-color:#6366f1}.ph-user-name-row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.ph-streak-badge{color:#f97316;background:#f973161a;border:1px solid #f9731640;border-radius:20px;align-items:center;gap:4px;padding:3px 10px;font-size:12px;font-weight:700;display:flex}.ph-streak-badge.active{color:#ea580c;background:#f9731626;border-color:#f9731666}.ph-heatmap-wrap{background:var(--box-bg);border:1px solid var(--line-color);border-radius:14px;margin-bottom:14px;padding:16px 18px}.ph-heatmap-title{color:var(--text-color);align-items:center;gap:7px;margin-bottom:14px;font-size:13px;font-weight:700;display:flex}.ph-heatmap-sub{color:var(--text-light);margin-left:4px;font-size:11.5px;font-weight:400}.ph-heatmap-grid{gap:3px;padding-bottom:4px;display:flex;overflow-x:auto}.ph-heatmap-col{flex-direction:column;flex-shrink:0;gap:3px;display:flex}.ph-heatmap-cell{border-radius:2px;width:11px;height:11px}.ph-heatmap-l0{background:var(--line-color);opacity:.5}.ph-heatmap-l1{background:#bbf7d0}.ph-heatmap-l2{background:#4ade80}.ph-heatmap-l3{background:#16a34a}:root.dark .ph-heatmap-l1{background:#4ade8040}:root.dark .ph-heatmap-l2{background:#4ade808c}:root.dark .ph-heatmap-l3{background:#4ade80}.ph-heatmap-legend{color:var(--text-light);align-items:center;gap:4px;margin-top:10px;font-size:10.5px;display:flex}.ph-due-section{background:var(--box-bg);border:1px solid #f59e0b4d;border-radius:14px;margin-bottom:14px;padding:14px 16px}.ph-due-title{color:#f59e0b;align-items:center;gap:7px;margin-bottom:10px;font-size:13px;font-weight:700;display:flex}.ph-due-count{color:#f59e0b;background:#f59e0b26;border-radius:20px;padding:1px 7px;font-size:11px;font-weight:700}.ph-due-list{flex-direction:column;gap:4px;display:flex}.ph-due-item{cursor:pointer;text-align:left;width:100%;color:var(--text-color);background:0 0;border:none;border-radius:8px;align-items:center;gap:8px;padding:7px 10px;font-size:13px;transition:background .12s;display:flex}.ph-due-item:hover{background:var(--bg-color)}.ph-due-icon{color:#f59e0b;flex-shrink:0}.ph-due-name{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-weight:500;overflow:hidden}.ph-due-ago{color:var(--text-light);flex-shrink:0;font-size:11px}.ph-features-page{padding:4px 0 32px}.ph-features-hero{text-align:center;padding:24px 16px 20px}.ph-features-title{color:var(--text-color);letter-spacing:-.03em;margin:0 0 8px;font-size:22px;font-weight:800}.ph-features-sub{color:var(--text-light);max-width:480px;margin:0 auto;font-size:14px;line-height:1.6}.ph-features-grid{grid-template-columns:1fr 1fr;gap:12px;margin-top:20px;display:grid}@media (width<=640px){.ph-features-grid{grid-template-columns:1fr}}.ph-feature-card{border:1px solid var(--line-color);background:var(--box-bg);border-radius:14px;gap:14px;padding:16px;transition:box-shadow .15s,transform .15s;display:flex}.ph-feature-card:hover{box-shadow:var(--shadow-soft);transform:translateY(-1px)}.ph-feature-icon{border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;display:flex}.ph-feature-body{flex:1;min-width:0}.ph-feature-name{color:var(--text-color);flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:4px;font-size:13.5px;font-weight:700;display:flex}.ph-feature-kbd{background:var(--bg-color);border:1px solid var(--line-color);color:var(--text-light);border-radius:5px;padding:1px 6px;font-family:monospace;font-size:10.5px;font-weight:500}.ph-feature-desc{color:var(--text-light);font-size:12.5px;line-height:1.55}