:root{--color-primary-dark:#0891b2;--color-primary:#06b6d4;--color-primary-medium:#22d3ee;--color-primary-light:#67e8f9;--color-primary-lighter:#a5f3fc;--color-primary-lightest:#cffafe;--color-accent:#f472b6;--color-accent-light:#fbcfe8;--color-accent-dark:#ec4899;--gradient-primary:linear-gradient(135deg, #0891b2 0%, #06b6d4 100%);--color-white:#fff;--color-text:var(--color-text-primary);--color-text-primary:#1e293b;--color-text-secondary:#64748b;--color-text-tertiary:#94a3b8;--color-bg-primary:#fff;--color-bg-secondary:#f8fafc;--color-bg-tertiary:#f1f5f9;--color-bg-white:#fff;--color-border:#e2e8f0;--color-border-light:#f1f5f9;--color-primary-hover:#0891b2;--color-primary-active:#0e7490;--color-primary-disabled:#a5f3fc;--glass-bg:#fff;--glass-blur:0px;--glass-shadow:0 1px 3px #0000000a;--glass-shadow-hover:0 4px 6px -1px #0000000f;--glass-border:1px solid #e2e8f0;--shadow-xs:0 1px 2px #00000008;--shadow-sm:0 1px 3px #0000000a;--shadow-md:0 4px 6px -1px #0000000f;--shadow-lg:0 6px 12px -2px #0000000f;--shadow-xl:0 10px 20px -4px #00000014;--shadow-hover:0 4px 6px -1px #0000000f;--color-success:#10b981;--color-warning:#f59e0b;--color-danger:#ef4444;--color-info:#06b6d4;--color-difficulty-easy:#10b981;--color-difficulty-medium:#f59e0b;--color-difficulty-hard:#ef4444;--font-sans:"Noto Sans SC", system-ui, -apple-system, sans-serif;--font-serif:"Noto Serif SC", Georgia, serif;--font-mono:"JetBrains Mono", Consolas, Monaco, monospace;--font-size-xs:.75rem;--font-size-sm:.875rem;--font-size-base:1rem;--font-size-lg:1.125rem;--font-size-xl:1.25rem;--font-size-2xl:1.5rem;--font-size-3xl:1.875rem;--font-size-4xl:2.25rem;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--space-16:4rem;--space-20:5rem;--spacing-xs:var(--space-1);--spacing-sm:var(--space-2);--spacing-md:var(--space-4);--spacing-lg:var(--space-6);--spacing-xl:var(--space-8);--spacing-2xl:var(--space-10);--header-height:56px;--sidebar-width:280px;--content-max-width:1100px;--z-dropdown:100;--z-sticky:200;--z-fixed:300;--z-header:900;--z-drawer:1000;--z-modal-backdrop:400;--z-modal:500;--z-popover:600;--z-tooltip:700;--transition-fast:.15s;--transition-base:.25s;--transition-slow:.35s;--ease-out-back:cubic-bezier(.34, 1.56, .64, 1);--ease-out-expo:cubic-bezier(.19, 1, .22, 1);--ease-in-out:cubic-bezier(.4, 0, .2, 1);--duration-fast:.15s;--duration-base:.25s;--duration-slow:.4s;--duration-slower:.6s;--radius-sm:4px;--radius-base:8px;--radius-lg:12px;--radius-xl:16px;--radius-full:9999px;--color-deep-blue:#1e293b;--color-primary-bg:#06b6d414;--color-bg-soft:var(--color-bg-secondary);--gradient-hero:none}.glass-card{background:#fff;border:1px solid #e2e8f0;border-radius:12px;transition:all .2s;box-shadow:0 1px 3px #0000000a}.glass-card:hover{border-color:#cbd5e1;transform:translateY(-1px);box-shadow:0 4px 6px -1px #0000000f}.glass-card-static{background:#fff;border:1px solid #e2e8f0;border-radius:12px;box-shadow:0 1px 3px #0000000a}.glass-header{background:#fff;border-bottom:1px solid #e2e8f0}.glass-input{background:#fff;border:1px solid #e2e8f0;border-radius:8px;transition:all .2s}.glass-input:focus{border-color:#06b6d4;box-shadow:0 0 0 3px #06b6d41a}.glass-button{color:#fff;background:#06b6d4;border:none;border-radius:8px;transition:all .2s}.glass-button:hover{background:#0891b2;transform:translateY(-1px);box-shadow:0 2px 8px #06b6d440}.glass-badge{background:#f8fafc;border:1px solid #e2e8f0;border-radius:9999px;padding:.5rem .75rem;font-size:.75rem;font-weight:500}:root{--font-sans:"Noto Sans SC", system-ui, -apple-system, sans-serif;--font-serif:"Noto Serif SC", Georgia, serif;--font-mono:"JetBrains Mono", Consolas, Monaco, monospace}body{font-family:var(--font-sans);font-size:var(--font-size-base);color:var(--color-text-primary);line-height:1.6}h1,h2,h3,h4,h5,h6{font-family:var(--font-serif);color:var(--color-text-primary);margin:0;font-weight:600;line-height:1.3}h1{font-size:var(--font-size-4xl);letter-spacing:-.02em;font-weight:700}h2{font-size:var(--font-size-3xl);letter-spacing:-.01em;font-weight:700}h3{font-size:var(--font-size-2xl);font-weight:600}h4{font-size:var(--font-size-xl);font-weight:600}h5{font-size:var(--font-size-lg);font-weight:500}h6{font-size:var(--font-size-base);font-weight:500}p{margin:0;line-height:1.6}p+p{margin-top:var(--space-4)}a{color:var(--color-primary);transition:color var(--transition-fast) ease;text-decoration:none}a:hover{color:var(--color-primary-light)}code,pre{font-family:var(--font-mono)}code{padding:var(--space-1) var(--space-2);background:var(--color-bg-secondary);border-radius:var(--radius-sm);font-size:.9em}pre{font-size:var(--font-size-sm);padding:var(--space-4);background:var(--color-bg-secondary);border-radius:var(--radius-base);overflow-x:auto}pre code{background:0 0;padding:0}strong,b{font-weight:600}em,i{font-style:italic}ul,ol{padding-left:var(--space-6);margin:0}li{margin:var(--space-2) 0}blockquote{margin:var(--space-4) 0;padding-left:var(--space-4);border-left:4px solid var(--color-primary);color:var(--color-text-secondary);font-style:italic}small{font-size:var(--font-size-sm);color:var(--color-text-secondary)}mark{background:var(--color-secondary-light);color:var(--color-text-primary);padding:var(--space-1) var(--space-2);border-radius:var(--radius-sm)}kbd{font-family:var(--font-mono);font-size:var(--font-size-sm);padding:var(--space-1) var(--space-3);background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-sm);box-shadow:0 2px 0 var(--color-border)}abbr[title]{cursor:help;-webkit-text-decoration:underline dotted;text-decoration:underline dotted}sub,sup{vertical-align:baseline;font-size:.75em;line-height:0;position:relative}sup{top:-.5em}sub{bottom:-.25em}:root{--el-color-primary:#0891b2;--el-color-primary-light-3:#06b6d4;--el-color-primary-light-5:#67e8f9;--el-color-primary-light-7:#cffafe;--el-color-primary-light-8:#d4e8f7;--el-color-primary-light-9:#cffafe;--el-color-primary-dark-2:#0e7490;--el-text-color-primary:var(--color-text-primary);--el-text-color-regular:var(--color-text-secondary);--el-text-color-secondary:var(--color-text-tertiary);--el-text-color-placeholder:var(--color-text-tertiary);--el-bg-color:var(--color-bg-white);--el-bg-color-page:var(--color-bg-primary);--el-bg-color-overlay:var(--color-bg-white);--el-border-color:var(--color-border);--el-border-color-light:var(--color-border-light);--el-border-color-lighter:#f0f0f0;--el-border-color-extra-light:#fafafa;--el-border-color-dark:#b8b8be;--el-border-color-darker:#8d8d93;--el-fill-color:var(--color-bg-secondary);--el-fill-color-light:#f5f5f5;--el-fill-color-lighter:#fafafa;--el-fill-color-extra-light:#fcfcfc;--el-fill-color-dark:#e8e8e8;--el-fill-color-darker:#e0e0e0;--el-fill-color-blank:var(--color-bg-white);--el-box-shadow:0 2px 8px #0f3d5e14;--el-box-shadow-light:0 4px 16px #0f3d5e0f;--el-box-shadow-base:0 2px 4px #0f3d5e1a;--el-box-shadow-dark:0 8px 32px #0f3d5e26;--el-border-radius-base:var(--radius-base);--el-border-radius-small:var(--radius-sm);--el-border-radius-round:var(--radius-full);--el-border-radius-circle:50%;--el-font-family:var(--font-sans);--el-font-size-base:var(--font-size-base);--el-font-size-small:var(--font-size-sm);--el-font-size-large:var(--font-size-lg);--el-font-size-extra-large:var(--font-size-xl);--el-font-weight-primary:500;--el-font-line-height-primary:1.6;--el-disabled-bg-color:var(--color-bg-secondary);--el-disabled-text-color:var(--color-text-tertiary);--el-disabled-border-color:var(--color-border-light);--el-overlay-color:#00000080;--el-overlay-color-light:#0000004d;--el-overlay-color-lighter:#0000001a;--el-mask-color:#ffffffe6;--el-transition-duration:var(--transition-base);--el-transition-duration-fast:var(--transition-fast);--el-color-success:var(--color-success);--el-color-success-light-3:#7ed63f;--el-color-success-light-5:#a8e07f;--el-color-success-light-7:#d4ebbf;--el-color-success-light-8:#e9f4de;--el-color-success-light-9:#f5faef;--el-color-success-dark-2:#3fa311;--el-color-warning:var(--color-warning);--el-color-warning-light-3:#f0d47a;--el-color-warning-light-5:#f5e0a3;--el-color-warning-light-7:#faebcc;--el-color-warning-light-8:#fdf3e0;--el-color-warning-light-9:#fef9f0;--el-color-warning-dark-2:#d4a844;--el-color-danger:var(--color-danger);--el-color-danger-light-3:#f08b74;--el-color-danger-light-5:#f4a894;--el-color-danger-light-7:#f9cabe;--el-color-danger-light-8:#fce4df;--el-color-danger-light-9:#fef2ef;--el-color-danger-dark-2:#d1563c;--el-color-error:var(--color-danger);--el-color-error-light-3:#f08b74;--el-color-error-light-5:#f4a894;--el-color-error-light-7:#f9cabe;--el-color-error-light-8:#fce4df;--el-color-error-light-9:#fef2ef;--el-color-error-dark-2:#d1563c;--el-color-info:var(--color-info);--el-color-info-light-3:#7ec8d6;--el-color-info-light-5:#a3dce7;--el-color-info-light-7:#c9e9f0;--el-color-info-light-8:#e4f4f7;--el-color-info-light-9:#f2fafc;--el-color-info-dark-2:#4a9bb8}@media (prefers-color-scheme:dark){:root{--el-bg-color:var(--color-bg-white);--el-bg-color-page:var(--color-bg-primary);--el-bg-color-overlay:#1a1a1e;--el-fill-color:#252529;--el-fill-color-light:#2a2a32;--el-fill-color-lighter:#2f2f38;--el-fill-color-extra-light:#353540;--el-fill-color-blank:#1a1a1e;--el-border-color:#3a3a42;--el-border-color-light:#2a2a32;--el-border-color-lighter:#252529;--el-border-color-extra-light:#1f1f25;--el-border-color-dark:#4a4a52;--el-border-color-darker:#5a5a62;--el-box-shadow:0 2px 8px #0000004d;--el-box-shadow-light:0 4px 16px #00000040;--el-box-shadow-base:0 2px 4px #0006;--el-box-shadow-dark:0 8px 32px #00000080;--el-overlay-color:#000000b3;--el-overlay-color-light:#00000080;--el-overlay-color-lighter:#0000004d;--el-mask-color:#000c}}.el-button{font-family:var(--font-sans);border-radius:var(--radius-base);transition:all var(--transition-base) cubic-bezier(.34, 1.56, .64, 1);font-weight:500}.el-button:hover{transform:translateY(-2px);box-shadow:0 4px 12px #1b6ca833}.el-button:active{transform:translateY(0)}.el-button--primary{background:var(--gradient-primary);border:none;transition:all .3s}.el-button--primary:hover{opacity:.9;transform:translateY(-1px);box-shadow:0 4px 12px #1b6ca84d}.el-input__wrapper{border-radius:var(--radius-base);transition:all var(--transition-base) ease}.el-input__wrapper:hover{box-shadow:0 2px 8px #1b6ca81a}.el-input__wrapper.is-focus{box-shadow:0 0 0 3px #1b6ca81a,0 2px 8px #1b6ca826}.el-input__wrapper:focus-within{box-shadow:0 0 0 2px #1b6ca826!important}.el-card{border-radius:var(--radius-lg);transition:all var(--transition-base) cubic-bezier(.34, 1.56, .64, 1)}.el-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}.el-dialog{border-radius:var(--radius-xl);box-shadow:0 20px 60px #0f3d5e33}.el-tag{transition:all var(--transition-base) ease;border-radius:6px;padding:4px 12px;font-weight:500}.el-tag:hover{transform:scale(1.05)}.el-progress-bar__inner{border-radius:var(--radius-full);transition:all var(--transition-slow) ease;background:linear-gradient(90deg,#0891b2,#06b6d4)!important}.el-breadcrumb__item{transition:all var(--transition-fast) ease}.el-breadcrumb__item:hover .el-breadcrumb__inner{color:var(--color-primary)}.el-tabs__item{transition:all var(--transition-base) ease}.el-tabs__item:hover{color:var(--color-primary)}.el-tabs__active-bar{background:linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);border-radius:var(--radius-full) var(--radius-full) 0 0;height:3px}.el-dropdown-menu{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:var(--space-2)}.el-dropdown-menu__item{border-radius:var(--radius-base);transition:all var(--transition-fast) ease;margin:2px 0}.el-dropdown-menu__item:hover{background:var(--color-primary-lightest);transform:translate(4px)}.el-tooltip__popper{border-radius:var(--radius-base)}.el-popover{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}.el-table{border-radius:var(--radius-lg);overflow:hidden}.el-table th{background:var(--color-bg-secondary);font-weight:600}.el-table tr:hover td{background:var(--color-primary-lightest)}.el-pagination button{border-radius:var(--radius-base);transition:all var(--transition-fast) ease}.el-pagination button:hover{transform:scale(1.1)}.el-pagination .el-pager li{border-radius:var(--radius-base);transition:all var(--transition-fast) ease}.el-pagination .el-pager li:hover{transform:scale(1.1)}.el-pagination .el-pager li.is-active{background:linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%)}.el-skeleton{border-radius:var(--radius-base)}.el-skeleton__item{border-radius:var(--radius-sm)}.el-empty{padding:var(--spacing-2xl)}.el-loading-mask{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#fffc}.el-loading-spinner .circular{stroke:var(--color-primary)}.el-switch{--el-switch-on-color:var(--color-primary)}.el-switch__core{border-radius:var(--radius-full);transition:all var(--transition-base) ease}.el-slider__runway{background:var(--color-bg-secondary);border-radius:var(--radius-full)}.el-slider__bar{background:linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);border-radius:var(--radius-full)}.el-slider__button{border:2px solid var(--color-primary);transition:all var(--transition-base) ease}.el-slider__button:hover{transform:scale(1.2);box-shadow:0 0 0 8px #1b6ca81a}.el-rate__icon{transition:all var(--transition-fast) ease}.el-rate__icon:hover{transform:scale(1.2)}.el-upload{border-radius:var(--radius-lg)}.el-upload-dragger{border:2px dashed var(--color-border);border-radius:var(--radius-lg);transition:all var(--transition-base) ease}.el-upload-dragger:hover{border-color:var(--color-primary);background:var(--color-primary-lightest)}.el-alert{border-radius:var(--radius-lg);border:none}.el-alert--success{border-left:4px solid var(--color-success);background:linear-gradient(135deg,#52c41a1a 0%,#52c41a0d 100%)}.el-alert--warning{border-left:4px solid var(--color-warning);background:linear-gradient(135deg,#e9c46a1a 0%,#e9c46a0d 100%)}.el-alert--error{border-left:4px solid var(--color-danger);background:linear-gradient(135deg,#e76f511a 0%,#e76f510d 100%)}.el-alert--info{border-left:4px solid var(--color-info);background:linear-gradient(135deg,#62b6cb1a 0%,#62b6cb0d 100%)}.el-message,.el-notification{border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:var(--radius-full);background-clip:padding-box;border:2px solid #0000}::-webkit-scrollbar-thumb:hover{background:var(--color-text-tertiary);background-clip:padding-box;border:2px solid #0000}*{scrollbar-width:thin;scrollbar-color:var(--color-border) transparent}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes slideDown{0%{opacity:0;transform:translateY(-30px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-30px)}to{opacity:1;transform:translate(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(30px)}to{opacity:1;transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}@keyframes shimmer{0%{background-position:-1000px 0}to{background-position:1000px 0}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes bounce{0%,to{animation-timing-function:cubic-bezier(.8,0,1,1);transform:translateY(0)}50%{animation-timing-function:cubic-bezier(0,0,.2,1);transform:translateY(-15px)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes glow{0%,to{box-shadow:0 0 5px #296d984d}50%{box-shadow:0 0 20px #296d9899}}@keyframes ripple{0%{opacity:1;transform:scale(0)}to{opacity:0;transform:scale(4)}}@keyframes gradientShift{0%{background-position:0%}50%{background-position:100%}to{background-position:0%}}.fade-enter-active,.fade-leave-active{transition:opacity .3s cubic-bezier(.4,0,.2,1)}.fade-enter-from,.fade-leave-to{opacity:0}.slide-up-enter-active{transition:all .4s cubic-bezier(.34,1.56,.64,1)}.slide-up-leave-active{transition:all .3s cubic-bezier(.4,0,1,1)}.slide-up-enter-from{opacity:0;transform:translateY(30px)}.slide-up-leave-to{opacity:0;transform:translateY(-30px)}.slide-down-enter-active{transition:all .4s cubic-bezier(.34,1.56,.64,1)}.slide-down-leave-active{transition:all .3s cubic-bezier(.4,0,1,1)}.slide-down-enter-from{opacity:0;transform:translateY(-30px)}.slide-down-leave-to{opacity:0;transform:translateY(30px)}.scale-in-enter-active,.scale-in-leave-active{transition:all .3s cubic-bezier(.34,1.56,.64,1)}.scale-in-enter-from,.scale-in-leave-to{opacity:0;transform:scale(.9)}.page-enter-active{transition:opacity .12s}.page-leave-active{transition:opacity 80ms}.page-enter-from,.page-leave-to{opacity:0}.list-enter-active,.list-leave-active{transition:all .4s cubic-bezier(.34,1.56,.64,1)}.list-enter-from,.list-leave-to{opacity:0;transform:scale(.9)}.list-move{transition:transform .4s cubic-bezier(.34,1.56,.64,1)}.stagger-enter-active{transition:all .4s cubic-bezier(.34,1.56,.64,1);transition-delay:calc(var(--index,0) * 50ms)}.stagger-enter-from{opacity:0;transform:translateY(20px)}.animate-fade-in{animation:.5s fadeIn}.animate-slide-up{animation:.5s cubic-bezier(.34,1.56,.64,1) slideUp}.animate-slide-down{animation:.5s cubic-bezier(.34,1.56,.64,1) slideDown}.animate-scale-in{animation:.4s cubic-bezier(.34,1.56,.64,1) scaleIn}.animate-pulse{animation:2s ease-in-out infinite pulse}.animate-shimmer{background:linear-gradient(90deg,#0000,#fff6,#0000) 0 0/1000px 100%;animation:2s infinite shimmer}.animate-float{animation:3s ease-in-out infinite float}.animate-bounce{animation:1s infinite bounce}.animate-spin{animation:1s linear infinite spin}.animate-glow{animation:2s ease-in-out infinite glow}.delay-100{animation-delay:.1s}.delay-200{animation-delay:.2s}.delay-300{animation-delay:.3s}.delay-400{animation-delay:.4s}.delay-500{animation-delay:.5s}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}@keyframes bounceIn{0%{opacity:0;transform:scale(.3)}50%{opacity:1;transform:scale(1.05)}70%{transform:scale(.9)}to{transform:scale(1)}}@keyframes shimmer-blue{0%{background-position:-200% 0}to{background-position:200% 0}}.skeleton-shimmer{background:linear-gradient(90deg,#f0f0f0 25%,#e0f0fb 50%,#f0f0f0 75%) 0 0/200% 100%;animation:1.5s ease-in-out infinite shimmer-blue}.stagger-1{animation-delay:50ms}.stagger-2{animation-delay:.1s}.stagger-3{animation-delay:.15s}.stagger-4{animation-delay:.2s}.stagger-5{animation-delay:.25s}.stagger-6{animation-delay:.3s}@keyframes pulse-soft{0%,to{box-shadow:0 0 #1b6ca84d}50%{box-shadow:0 0 0 8px #1b6ca800}}.animate-pulse-soft{animation:2s ease-in-out infinite pulse-soft}.animate-bounce-in{animation:.6s cubic-bezier(.34,1.56,.64,1) bounceIn}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility;scroll-behavior:smooth}body{font-family:var(--font-sans);color:var(--color-text-primary);background:#f8fafc;min-height:100vh;line-height:1.7;overflow-x:hidden}.skip-link{clip:rect(0, 0, 0, 0);white-space:nowrap;z-index:9999;background:var(--color-primary);color:#fff;border:0;width:1px;height:1px;margin:-1px;padding:0;font-size:.875rem;text-decoration:none;position:absolute;overflow:hidden}.skip-link:focus{clip:auto;border-radius:0 0 8px;width:auto;height:auto;margin:0;padding:8px 16px;position:fixed;top:0;left:0;overflow:visible}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}:focus:not(:focus-visible){outline:none}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}body:before,body:after{animation:none}}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border-width:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.container{width:100%;max-width:var(--content-max-width);padding:0 var(--space-6);margin:0 auto}@media (width>=768px){.container{padding:0 var(--space-8)}}@media (width>=1024px){.container{padding:0 var(--space-10)}}main{display:block}img,picture{max-width:100%;height:auto;display:block}ul,ol{list-style:none}button,input,optgroup,select,textarea{font:inherit;color:inherit}button{cursor:pointer;background:0 0;border:none}table{border-collapse:collapse;border-spacing:0}h1,h2,h3,h4,h5,h6{margin:0;font-weight:600;line-height:1.2}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}h4{font-size:1.25rem}h5{font-size:1rem}h6{font-size:.875rem}p{margin:0 0 var(--space-4) 0}p:last-child{margin-bottom:0}a{color:inherit;text-decoration:none}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-text-tertiary)}::selection{background:var(--color-primary-lightest);color:var(--color-primary-dark)}.card-hover{transition:transform var(--transition-base) cubic-bezier(.34, 1.56, .64, 1), box-shadow var(--transition-base) ease}.card-hover:hover{box-shadow:var(--glass-shadow-hover);transform:translateY(-4px)}@keyframes skeleton-loading{0%{background-position:-200px 0}to{background-position:calc(200px + 100%) 0}}.skeleton{background:linear-gradient(90deg, var(--color-bg-secondary) 0px, var(--color-bg-white) 40px, var(--color-bg-secondary) 80px);border-radius:var(--radius-base);background-size:200px 100%;animation:1.5s ease-in-out infinite skeleton-loading}.ripple{position:relative;overflow:hidden}.ripple:after{content:"";opacity:0;pointer-events:none;background:#ffffff4d;border-radius:50%;width:100px;height:100px;position:absolute;transform:scale(0)}.ripple:active:after{animation:.6s ease-out ripple}.math-blank{border-bottom:2px solid var(--color-primary);vertical-align:baseline;min-width:60px;margin:0 4px;display:inline-block}