.page-shell{padding:108px 20px 80px}.site-header{padding:0}.site-header-inner{max-width:none;margin:0;gap:18px;padding:14px 26px;background:color-mix(in srgb,var(--panel-strong) 92%,transparent);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.site-chrome-logo{display:inline-flex;align-items:center;text-decoration:none}.site-header-brand{font-family:var(--font-display),sans-serif;font-size:1.15rem;font-weight:600;letter-spacing:.08em;color:var(--ink)}.section-reveal{-webkit-clip-path:inset(0 0 80px 0);clip-path:inset(0 0 80px 0);opacity:0;transition:opacity .6s ease,-webkit-clip-path .7s cubic-bezier(.22,1,.36,1);transition:clip-path .7s cubic-bezier(.22,1,.36,1),opacity .6s ease;transition:clip-path .7s cubic-bezier(.22,1,.36,1),opacity .6s ease,-webkit-clip-path .7s cubic-bezier(.22,1,.36,1)}.section-reveal.reveal-visible{-webkit-clip-path:inset(0 0 0 0);clip-path:inset(0 0 0 0);opacity:1}.site-chrome{display:flex;align-items:center;justify-content:flex-end;gap:10px;flex-wrap:wrap}.interactive-card{transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease,background .18s ease}.interactive-card:hover{transform:translateY(-3px);border-color:rgba(31,163,154,.44);box-shadow:0 28px 80px rgba(8,42,39,.34);background:rgba(20,93,87,.98)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media (max-width:980px){.workspace-shell{grid-template-columns:1fr}.intro-band{padding:26px}.flow-grid,.landing-options{grid-template-columns:1fr}.answer-cta,.auth-stage,.flow-intro,.landing-hero{align-items:flex-start;flex-direction:column}.landing-hero-upgraded{grid-template-columns:1fr}.auth-signup-stage,.auth-stage{grid-template-columns:1fr;min-height:auto;gap:24px}.signup-shell{grid-template-columns:1fr;gap:28px}.signup-sidebar{position:relative;top:auto;min-height:auto}.signup-step-copy p{white-space:normal}.signup-main{padding-top:0}.auth-showcase{min-height:auto;gap:18px;padding-top:0}.auth-login-card,.auth-signup-card{justify-self:stretch}.auth-signup-story-grid,.signup-grid-two,.signup-highlight-row{grid-template-columns:1fr}.auth-story-line{padding-left:20px}}@media (max-width:640px){.page-shell{padding:20px 14px 60px}.auth-page-shell{padding:92px 14px 40px}.history-header,.result-actions,.split-fields{grid-template-columns:1fr;display:grid}.intro-band,.panel{border-radius:24px;padding:18px}.intro-band h1{font-size:2.45rem}.site-header-inner{padding:12px 16px}.auth-showcase h1{max-width:12ch;font-size:2.8rem}.auth-showcase-copy{font-size:1rem}.auth-story-line{padding-left:16px}.auth-story-quote p{max-width:100%}.auth-signup-copy{padding-top:0}.auth-signup-copy h1{max-width:100%;font-size:2.6rem}.auth-signup-story-card{padding:18px}.signup-shell{gap:18px}.signup-sidebar{min-height:auto;padding:24px}.brand-logo-lockup-auth{width:90px}.brand-logo-lockup-sidebar{width:80px}.signup-sidebar h1{font-size:2.5rem}.signup-footer-meta,.signup-progress-meta{gap:10px;letter-spacing:.1em}.signup-actions{flex-direction:column-reverse;align-items:stretch}.signup-primary-action,.signup-secondary-action{width:100%}}.site-header{position:fixed;inset:0 0 auto 0;z-index:1000;pointer-events:none}.site-header-inner{width:100%;display:flex;align-items:center;justify-content:space-between;padding:14px 24px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.92);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);box-shadow:0 10px 30px rgba(12,75,71,.06);pointer-events:auto}@media (max-width:768px){.about-problem-callouts,.about-team-grid{grid-template-columns:1fr}.marketing-about-stats{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:1120px){.marketing-feature-grid-four,.marketing-subject-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.recognition-items{grid-template-columns:1fr}}@media (max-width:860px){.marketing-feature-grid-three{grid-template-columns:1fr}}@media (max-width:980px){.marketing-footer-inner,.marketing-header-inner,.marketing-hero-section,.marketing-section,.marketing-showcase-section{width:min(1180px,calc(100vw - 32px))}.marketing-header-inner{min-height:72px}.marketing-nav{display:none}.marketing-hero-section,.marketing-parent-section,.marketing-trust-grid{grid-template-columns:1fr}.marketing-hero-section{padding-top:26px}.marketing-showcase-section{padding-bottom:72px}.marketing-showcase-frame{padding:20px}}@media (max-width:640px){.marketing-page-shell{padding-top:calc(96px + env(safe-area-inset-top))}.marketing-header-actions{gap:8px}.marketing-cta-button,.marketing-link-button,.marketing-parent-button,.marketing-primary-button,.marketing-secondary-button{min-height:44px;padding:0 16px;font-size:.95rem}.marketing-feature-grid-four,.marketing-milestone-stats,.marketing-subject-grid{grid-template-columns:1fr}.marketing-milestone-stats{gap:32px}.marketing-hero-image,.marketing-parent-image{height:380px}.marketing-hero-float{position:static;margin-top:16px;width:100%}.marketing-showcase-frame{padding:14px;border-radius:24px}.marketing-showcase-window{border-radius:18px}.marketing-trust-grid{gap:18px}}@media (max-width:900px){.admin-panel{padding:28px 18px}.admin-summary-row,.admin-user-details{grid-template-columns:1fr}.admin-user-meta{flex-direction:column;align-items:flex-start}.admin-user-actions{justify-content:stretch}.admin-primary-action,.admin-secondary-action{width:100%}}.section-kicker,.section-label{margin:0 0 8px;color:#ca5a0a;text-transform:uppercase;letter-spacing:.07em;font-size:.68rem;font-weight:700}.section-label{color:#7083a0}@media (max-width:1180px){.dashboard-bottom-grid,.dashboard-grid,.feedback-layout,.progress-audit-card,.progress-grid,.settings-grid{grid-template-columns:1fr}.practice-config-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.practice-generate-button{grid-column:1/-1}.revision-bento-grid>*{grid-column:span 12}.revision-flashcard-stage{padding-bottom:32px}.parent-grid{grid-template-columns:1fr}.parent-activity-card,.parent-reminder-card{grid-column:auto}.teacher-shell{grid-template-columns:1fr}.teacher-config-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.teacher-generate-button{grid-column:1/-1}.teacher-sidebar{position:static;height:auto;border-right:0;border-bottom:1px solid rgba(174,189,211,.24)}}@media (max-width:900px){.scholar-shell{--scholar-gutter:30px}.scholar-main{margin-left:0}.scholar-desktop-only{display:none!important}.scholar-sidebar .scholar-sidebar-footer{display:none}.scholar-sidebar{position:-webkit-sticky;position:sticky;top:0;width:100%!important;height:auto;flex-direction:column;align-items:stretch;overflow:visible;border-right:0;border-bottom:1px solid rgba(174,189,211,.24);padding:0;z-index:200;background:white;backdrop-filter:none;-webkit-backdrop-filter:none}.scholar-mobile-topbar{display:flex;flex-direction:row;align-items:center;justify-content:space-between;width:100%;padding:10px 14px;gap:12px;background:white;position:relative;z-index:201}.scholar-mobile-toggle,.scholar-mobile-topbar .scholar-sidebar-toggle{display:none!important}.scholar-mobile-logo{display:block;height:30px;width:auto;flex-shrink:0}.scholar-sidebar-mobile-meta{display:flex;align-items:center;gap:6px;margin-left:auto;position:static}.scholar-sidebar-mobile-meta .scholar-profile-dropdown-up{position:fixed;top:84px;right:18px;left:auto;bottom:auto;min-width:220px;z-index:260}.scholar-nav-mobile-overlay{display:none}.scholar-content,.scholar-footer{padding-bottom:122px}.scholar-mobile-bottom-nav{position:fixed;inset:auto 0 0 0;z-index:220;display:flex;justify-content:space-between;align-items:center;gap:0;padding:0;border:0;border-top:1px solid rgba(174,189,211,.22);border-radius:0;background:rgba(255,255,255,.98);box-shadow:none;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.scholar-mobile-tab{display:flex;min-width:0;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:8px 1px;border-radius:16px;color:#7083a0;font:inherit;font-size:.56rem;font-weight:700;letter-spacing:-.01em;transition:background .18s ease,color .18s ease,transform .18s ease}.scholar-mobile-tab span{overflow:hidden;max-width:100%;text-overflow:ellipsis;white-space:nowrap}.scholar-mobile-tab-active{background:linear-gradient(135deg,rgba(15,143,137,.14),rgba(241,249,249,.98));color:#0f8f89}.scholar-mobile-bottom-nav .scholar-mobile-tab{flex:1 1;flex-direction:row;gap:0;height:100%;padding:0;border-radius:0;background:none}.scholar-mobile-bottom-nav .scholar-mobile-tab-active{background:none;color:#0f8f89}.dashboard-grid{grid-template-columns:1fr!important}.dashboard-feature-card,.dashboard-feature-card-wide{grid-column:auto;min-height:0}.dashboard-feature-card{padding:24px}.dashboard-feature-card p{font-size:.98rem;line-height:1.6}.dashboard-hero,.scholar-footer,.section-header-bar{flex-direction:column;align-items:flex-start}.practice-config-grid,.revision-selector,.settings-form-grid,.teacher-config-grid{grid-template-columns:minmax(0,1fr)}.revision-flashcard-actions,.revision-flashcard-head,.revision-flashcard-head-controls,.revision-flashcard-kicker{flex-wrap:wrap}.parent-footer,.parent-topbar,.teacher-topbar{flex-direction:column;align-items:flex-start}}@media (max-width:640px){.scholar-content,.scholar-footer{padding-left:18px;padding-right:18px}.chat-bubble,.dashboard-reminder,.practice-card,.revision-definition-card,.revision-formula-card,.revision-highlight-card,.revision-quick-card,.revision-tip-card,.revision-trap-card,.settings-card{padding:18px}.parent-content,.parent-topbar,.teacher-content,.teacher-topbar{padding-left:18px;padding-right:18px}}@media (max-width:768px){.parent-topbar{flex-direction:row;align-items:center;gap:12px;padding:max(14px,env(safe-area-inset-top)) 16px 12px}.parent-topbar-brand span{display:none}.parent-topbar-actions{gap:8px}.parent-user-chip span{max-width:96px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.parent-logout span{display:none}.parent-content{padding-top:20px;padding-bottom:max(28px,env(safe-area-inset-bottom))}.parent-card-head{flex-direction:column;align-items:flex-start;gap:8px}.parent-chart-bars{gap:6px;height:200px}.parent-chart-bar-column span{font-size:.62rem}}.marketing-header-inner,.native-app .marketing-header-inner{padding-top:env(safe-area-inset-top)}.native-app .marketing-header-inner{min-height:calc(58px + env(safe-area-inset-top))}.dt-canvas,.dt-content,.dt-overlay,img{-webkit-touch-callout:none}body,html{overscroll-behavior:none}@media (max-width:768px){input,textarea{font-size:16px}}