:root{--color-bg:#fff;--color-surface:#f5f7fc;--color-border:#dde2f0;--color-text:#1c2333;--color-text-muted:#5c6478;--color-primary:#2f4bc0;--color-primary-dark:#1e2d47;--color-primary-light:#eaeeff;--color-accent:#0ea5e0;--color-danger:#d64545;--font-sans:"Segoe UI", system-ui, -apple-system, Roboto, sans-serif;--radius-sm:6px;--radius-md:10px;--shadow-sm:0 1px 2px #10233314;--shadow-md:0 4px 16px #1023331f;--header-height:64px;--content-max-width:1400px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);-webkit-font-smoothing:antialiased}a{color:var(--color-primary);text-decoration:none}.text-link:hover,.text-link:focus-visible{text-decoration:underline}.text-link:active{color:var(--color-primary-dark)}button{font-family:inherit}#root{flex-direction:column;min-height:100vh;display:flex}.help-button{border:1px solid var(--color-border);background:var(--color-surface);width:22px;height:22px;color:var(--color-text-muted);cursor:pointer;border-radius:50%;font-size:.75rem;line-height:1}.help-button:hover{border-color:var(--color-primary);color:var(--color-primary)}.help-overlay{z-index:1000;background:#10233359;justify-content:flex-end;display:flex;position:fixed;inset:0}.help-drawer{background:var(--color-bg);width:min(420px,100%);height:100%;box-shadow:var(--shadow-md);padding:1.5rem;overflow-y:auto}.help-drawer-header{justify-content:space-between;align-items:center;margin-bottom:1rem;display:flex}.help-drawer-header button{cursor:pointer;color:var(--color-text-muted);background:0 0;border:none;font-size:1.5rem}.help-drawer-content{color:var(--color-text);line-height:1.6}.hamburger-button{cursor:pointer;border-radius:var(--radius-sm);background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;width:40px;height:40px;display:flex}.hamburger-button:hover{background:var(--color-surface)}.hamburger-box{width:20px;height:16px;display:block;position:relative}.hamburger-line{background:var(--color-text);border-radius:2px;width:100%;height:2px;transition:transform .3s,opacity .2s,top .3s;position:absolute;left:0}.hamburger-line-top{top:0}.hamburger-line-middle{top:7px}.hamburger-line-bottom{top:14px}.hamburger-box.is-open .hamburger-line-top{top:7px;transform:rotate(45deg)}.hamburger-box.is-open .hamburger-line-middle{opacity:0}.hamburger-box.is-open .hamburger-line-bottom{top:7px;transform:rotate(-45deg)}.sidebar-backdrop{top:var(--header-height);opacity:0;visibility:hidden;z-index:90;background:#10172959;transition:opacity .25s,visibility .25s;position:fixed;bottom:0;left:0;right:0}.sidebar-backdrop.is-open{opacity:1;visibility:visible}.sidebar{top:var(--header-height);background:var(--color-bg);border-right:1px solid var(--color-border);width:280px;max-width:80vw;box-shadow:var(--shadow-md);z-index:95;transition:transform .3s;position:fixed;bottom:0;left:0;overflow-y:auto;transform:translate(-100%)}.sidebar.is-open{transform:translate(0)}@media (width>=1024px){.hamburger-button,.sidebar-backdrop{display:none}.sidebar{top:var(--header-height);height:calc(100vh - var(--header-height));max-width:none;box-shadow:none;flex-shrink:0;position:sticky}}.sidebar-nav{flex-direction:column;padding:.5rem .75rem;display:flex}.sidebar-section{border-bottom:1px solid var(--color-border)}.sidebar-section:last-child{border-bottom:none}.sidebar-section-trigger{width:100%;color:var(--color-text);cursor:pointer;background:0 0;border:none;justify-content:space-between;align-items:center;padding:.9rem .5rem;font-size:.95rem;font-weight:600;display:flex}.sidebar-section-trigger:hover{color:var(--color-primary)}.sidebar-chevron{color:var(--color-text-muted);font-size:.75rem;transition:transform .2s}.sidebar-chevron.is-open{transform:rotate(180deg)}.sidebar-submenu{grid-template-rows:0fr;transition:grid-template-rows .25s;display:grid}.sidebar-submenu.is-open{grid-template-rows:1fr}.sidebar-submenu-inner{flex-direction:column;display:flex;overflow:hidden}.sidebar-submenu-item{color:var(--color-text-muted);justify-content:space-between;align-items:center;gap:.5rem;padding:.55rem .5rem .55rem 1rem;font-size:.88rem;display:flex}.sidebar-badge{text-transform:uppercase;letter-spacing:.04em;background:var(--color-surface);border:1px solid var(--color-border);color:var(--color-text-muted);border-radius:999px;flex-shrink:0;padding:.15rem .4rem;font-size:.65rem}.sidebar-admin-star{color:#ffc400;text-shadow:0 0 3px #ffc40080;flex-shrink:0;font-size:.8rem}.nav-bar{height:var(--header-height);border-bottom:1px solid var(--color-border);background:var(--color-bg);z-index:100;position:sticky;top:0}.nav-bar-inner{max-width:var(--content-max-width);align-items:center;gap:.75rem;height:100%;margin:0 auto;padding:0 1rem;display:flex}@media (width>=640px){.nav-bar-inner{gap:2rem;padding:0 1.5rem}}.nav-brand{letter-spacing:.04em;color:var(--color-primary-dark);flex-shrink:0;font-size:1.1rem;font-weight:700}@media (width>=640px){.nav-brand{font-size:1.4rem}}.nav-brand:hover{text-decoration:none}.nav-links{flex:1;align-items:center;gap:.75rem;min-width:0;display:flex}@media (width>=640px){.nav-links{gap:1.5rem}}.nav-link{color:var(--color-text);padding:.4rem 0;font-weight:500}.nav-link:hover{color:var(--color-primary);text-decoration:none}.nav-link-button{cursor:pointer;background:0 0;border:none;font-size:1rem;font-weight:500}.nav-dropdown{position:relative}.nav-dropdown-trigger{cursor:pointer;background:0 0;border:none;font-size:1rem}.nav-dropdown-caret{margin-left:.15rem;font-size:.7rem}.nav-dropdown-menu{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);min-width:260px;max-width:calc(100vw - 2rem);box-shadow:var(--shadow-md);flex-direction:column;padding:.5rem;display:flex;position:absolute;top:calc(100% + .5rem);left:0}@media (width<=639px){.nav-dropdown-menu{top:calc(var(--header-height) + .5rem);position:fixed;left:50%;transform:translate(-50%)}}.nav-dropdown-item{border-radius:var(--radius-sm);color:var(--color-text);flex-direction:column;padding:.6rem .75rem;display:flex}.nav-dropdown-item:hover{background:var(--color-primary-light);text-decoration:none}.nav-dropdown-item-label{font-weight:600}.nav-dropdown-item-desc{color:var(--color-text-muted);font-size:.8rem}.nav-dropdown-item-button{text-align:left;cursor:pointer;background:0 0;border:none;font-size:1rem;font-weight:600}.nav-dropdown-category{position:relative}.nav-dropdown-category-trigger{flex-direction:row;justify-content:space-between;align-items:center;width:100%;display:flex}.nav-dropdown-flyout-arrow{color:var(--color-text);font-size:1.1rem;font-weight:700}.nav-dropdown-flyout{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);min-width:260px;max-width:calc(100vw - 2rem);box-shadow:var(--shadow-md);flex-direction:column;margin-left:.5rem;padding:.5rem;display:flex;position:absolute;top:-.5rem;left:100%}@media (width<=639px){.nav-dropdown-flyout{max-width:none;box-shadow:none;background:var(--color-surface);margin-top:.25rem;margin-left:0;position:static}}.nav-dropdown-subitem{color:var(--color-text-muted);justify-content:space-between;align-items:center;gap:.5rem;padding:.5rem .75rem;font-size:.9rem;display:flex}.nav-dropdown-subitem-label{flex:1;min-width:0}.nav-dropdown-badge{text-transform:uppercase;letter-spacing:.04em;background:var(--color-surface);border:1px solid var(--color-border);color:var(--color-text-muted);border-radius:999px;flex-shrink:0;padding:.15rem .4rem;font-size:.65rem}.nav-profile{flex-shrink:0;align-items:center;display:flex}.profile-trigger{cursor:pointer;border-radius:var(--radius-md);background:0 0;border:none;align-items:center;gap:.5rem;padding:.25rem .5rem;display:flex}.profile-trigger:hover{background:var(--color-surface)}.profile-avatar{object-fit:cover;border-radius:50%;width:28px;height:28px}.profile-avatar-fallback{background:var(--color-primary);color:#fff;justify-content:center;align-items:center;font-size:.85rem;font-weight:700;display:flex}.profile-name{text-overflow:ellipsis;white-space:nowrap;max-width:140px;font-weight:500;display:none;overflow:hidden}@media (width>=640px){.profile-name{display:block}}.profile-menu{left:auto;right:0}.btn{border-radius:var(--radius-sm);cursor:pointer;border:1px solid #0000;justify-content:center;align-items:center;padding:.5rem 1.1rem;font-weight:600;text-decoration:none;display:inline-flex}.btn:hover{text-decoration:none}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-dark)}.app-body{flex:1;align-items:flex-start;display:flex}.site-main{min-width:0;max-width:var(--content-max-width);flex:1;width:100%;margin:0 auto;padding:2rem 1.5rem 3rem}.site-footer{border-top:1px solid var(--color-border);color:var(--color-text-muted);text-align:center;padding:1rem;font-size:.85rem}.visitor-stats{flex-wrap:wrap;justify-content:center;gap:1rem;margin-top:.5rem;display:flex}.visitor-stat-tile{align-items:center;gap:.4rem;display:flex}.odometer{background-color:#f2ecd9;background-image:radial-gradient(#0000001f 1px,#0000 1px);background-size:5px 5px;border:1.5px solid #2b2b2b4d;border-radius:3px;gap:1px;padding:3px;display:inline-flex}.odometer-digit{color:#2b2b2b;background:#fffdf6;border:1px solid #2b2b2b4d;border-radius:2px;justify-content:center;align-items:center;width:.8rem;height:1.1rem;font-family:Courier New,ui-monospace,monospace;font-size:.7rem;font-weight:700;display:inline-flex}.odometer-digit-dim{color:#b0a894}.visitor-stat-label{color:var(--color-text-muted);font-size:.75rem}.hero{text-align:center;padding:3rem 1rem 2.5rem}.hero h1{color:var(--color-primary-dark);max-width:720px;margin:0 auto 1rem;font-size:2.2rem}.hero p{color:var(--color-text-muted);max-width:560px;margin:0 auto;font-size:1.05rem}.tool-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.25rem;display:grid}.tool-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text);padding:1.5rem;transition:box-shadow .15s,border-color .15s;display:block}.tool-card:hover{box-shadow:var(--shadow-sm);border-color:var(--color-primary);text-decoration:none}.tool-card h2{color:var(--color-primary-dark);margin:0 0 .5rem;font-size:1.15rem}.tool-card p{color:var(--color-text-muted);margin:0;font-size:.95rem}.profile-page{text-align:center;max-width:420px;margin:0 auto;padding:2rem 0}.profile-page-avatar{object-fit:cover;border-radius:50%;width:88px;height:88px;margin:0 auto 1rem;font-size:2rem}.profile-page h1{color:var(--color-primary-dark);margin:0 0 .25rem}.profile-page-email{color:var(--color-text-muted);margin:0 0 1.5rem}.profile-page-note{color:var(--color-text-muted);border-top:1px solid var(--color-border);padding-top:1rem;font-size:.9rem}.login-page{max-width:380px;margin:0 auto;padding:2rem 0}.login-page h1{text-align:center;color:var(--color-primary-dark);margin:0 0 1.5rem}.login-form{flex-direction:column;gap:1rem;display:flex}.login-field{color:var(--color-text-muted);flex-direction:column;gap:.35rem;font-size:.85rem;font-weight:600;display:flex}.login-field input{border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);color:var(--color-text);padding:.6rem .75rem;font-size:.95rem}.login-field input:focus{border-color:var(--color-primary);outline:none}.login-error{color:var(--color-danger);margin:0;font-size:.85rem}.login-submit{width:100%;margin-top:.25rem}.login-toggle{text-align:center;color:var(--color-text-muted);margin:1.25rem 0 0;font-size:.9rem}.login-toggle button{color:var(--color-primary);font-weight:600;font-size:inherit;cursor:pointer;background:0 0;border:none;padding:0}.login-toggle button:hover{text-decoration:underline}.login-divider{color:var(--color-text-muted);align-items:center;gap:.75rem;margin:1.5rem 0;font-size:.8rem;display:flex}.login-divider:before,.login-divider:after{content:"";background:var(--color-border);flex:1;height:1px}.login-google{border:1px solid var(--color-border);width:100%;color:var(--color-primary);box-shadow:var(--shadow-sm);background:#fff;border-radius:10px;justify-content:center;align-items:center;gap:.6rem;padding:.7rem 1.1rem;font-weight:700;display:inline-flex}.login-google:hover{border-color:var(--color-primary);box-shadow:var(--shadow-md)}.login-google-icon{flex-shrink:0;width:18px;height:18px}.quantile-analysis-frame{width:calc(100% + 3rem);height:calc(100vh - var(--header-height) - 4rem);border:none;min-height:700px;margin:-2rem -1.5rem;display:block}