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var(--wa-line);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}.wa-nav__inner{max-width:1240px;padding:0 32px;min-height:83px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px}.wa-logo{font:700 1.45rem/1.2 var(--font-head);letter-spacing:-.04em;position:relative;white-space:nowrap}.wa-logo>span:not(.wa-logo__edition){color:var(--wa-accent)}.wa-logo__edition{display:block;font:500 .5rem/1.5 var(--font-body);letter-spacing:.18em;color:var(--ink-soft);margin-top:6px}.wa-nav__links,.wa-nav__actions{display:flex;align-items:center;gap:28px}.wa-nav__links a{font-size:.77rem;color:var(--ink-soft);padding:12px 0}.wa-nav__links a:hover,.wa-footer a:hover{color:var(--wa-accent)}.wa-nav__actions{gap:18px}.wa-login{display:inline-flex;gap:14px;align-items:center;font-size:.8rem;font-weight:600;min-height:44px}.landing .wa-nav .theme-toggle{border:1px solid var(--rule);border-radius:50%;width:36px;height:36px;display:inline-grid;place-items:center;padding:0}.wa-hero-scene{position:relative}.wa-atmosphere{position:absolute;top:0;right:0;bottom:0;left:0;overflow:hidden;pointer-events:none;background:radial-gradient(ellipse at 75% 58%,var(--wa-tint),transparent 70%)}[data-wtheme=rain] .wa-atmosphere{background:radial-gradient(ellipse at 80% 30%,rgba(94,135,162,.18),transparent 68%),linear-gradient(180deg,rgba(114,149,171,.06),transparent 70%,rgba(121,152,168,.1))}[data-wtheme=snow] .wa-atmosphere{background:none}[data-wtheme=newyear] .wa-atmosphere{background:radial-gradient(ellipse at 82% 20%,rgba(227,182,94,.18),transparent 42%),radial-gradient(ellipse at 78% 75%,rgba(79,126,92,.13),transparent 58%),radial-gradient(ellipse at 4% 35%,rgba(169,193,198,.1),transparent 50%)}.wa-hero{position:relative;z-index:2;max-width:1240px;margin:auto;padding:76px 48px 78px 32px;display:grid;grid-template-columns:1.15fr 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h1{font-size:clamp(2rem,5.8vw,3.1rem)}.wa-hero__visual{width:min(100%,420px);margin:auto}.wa-hero__sub{max-width:470px}.wa-hero__actions{gap:20px}.wa-ornament--red{left:29%;top:-16px;width:63px}.wa-ornament--gold{right:8%;width:71px;top:-13px}.wa-ornament--small{right:25%;top:-26px}.wa-light-string{height:73px}.wa-stats>div{flex-direction:column;align-items:center;gap:3px;text-align:center;padding:0 10px}.wa-section{padding-top:62px}.wa-section__heading{align-items:flex-start;gap:18px}.wa-section__heading>p{font-size:.73rem;max-width:215px}.wa-steps{gap:22px}.wa-steps h3{font-size:.87rem}.wa-faq{grid-template-columns:1fr;gap:24px;padding-bottom:52px}.wa-faq>div>p:not(.wa-eyebrow){margin-bottom:0}.wa-start{padding:30px;margin-bottom:52px}.wa-start h2{font-size:2rem}.wa-start .wa-button{padding:12px 15px;font-size:.75rem}.wa-footer__main{align-items:flex-start}.wa-footer__main nav{flex-direction:column;gap:12px}}@media(max-width:600px){.landing{padding-bottom:calc(90px + 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112%,rgba(46,107,63,.08),transparent 62%)}body:after{content:"";position:fixed;top:-18%;right:-18%;bottom:-18%;left:-18%;z-index:-1;pointer-events:none;background:radial-gradient(720px 520px at 18% 14%,rgba(39,66,124,.2),transparent 62%),radial-gradient(640px 460px at 82% 18%,rgba(160,49,35,.16),transparent 62%),radial-gradient(860px 600px at 50% 88%,rgba(46,107,63,.13),transparent 64%),radial-gradient(520px 380px at 38% 42%,rgba(143,176,239,.1),transparent 62%);filter:blur(36px) saturate(1.35);opacity:.72;will-change:transform;transform:translateZ(0);animation:auroraFlow 22s ease-in-out infinite alternate,auroraHue 34s ease-in-out infinite alternate}@keyframes auroraFlow{0%{transform:translate3d(-1.5%,-1%,0) scale(1) rotate(0)}25%{transform:translate3d(1.8%,.8%,0) scale(1.04) rotate(.6deg)}50%{transform:translate3d(.6%,1.6%,0) scale(1.02) rotate(-.4deg)}75%{transform:translate3d(-1%,.4%,0) scale(1.03) rotate(.3deg)}to{transform:translate3d(1.2%,-.8%,0) scale(1) rotate(-.6deg)}}@keyframes auroraHue{0%{filter:blur(36px) saturate(1.35) hue-rotate(0deg)}to{filter:blur(36px) saturate(1.45) hue-rotate(10deg)}}[data-aurora=off] body:after{animation:none!important;opacity:0!important}@media(prefers-reduced-motion:reduce){body:after{animation:none!important;opacity:.45!important}}@media(max-width:768px){body:after{filter:blur(28px) saturate(1.2);opacity:.52;animation-duration:30s,48s}}@media(max-width:430px){body:after{filter:blur(24px) saturate(1.15);opacity:.38}}.card{background:#fffdf7a8;-webkit-backdrop-filter:blur(16px) saturate(1.5);backdrop-filter:blur(16px) saturate(1.5);border:1px solid rgba(255,255,255,.65);box-shadow:inset 0 1px #ffffff80,0 1px 2px #211d170a,0 10px 30px #211d1712}.card.clickable:hover{transform:translateY(-2px);box-shadow:inset 0 1px #ffffff80,0 2px 4px #211d170d,0 16px 40px #211d171c}.btn{border-radius:999px;box-shadow:inset 0 1px #fff6}.btn.secondary{background:#fffdf7b8}input,select,textarea{border-radius:var(--radius-sm);background:#fffdf7bf;transition:border-color .15s ease,box-shadow .15s ease}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--blue-ink);box-shadow:0 0 0 3px #27427c1f}.sidebar{background:#fffdf7c7;-webkit-backdrop-filter:blur(18px) saturate(1.5);backdrop-filter:blur(18px) saturate(1.5);border-right:1px solid rgba(216,208,189,.5)}.nav-item.active{border-radius:999px;box-shadow:0 2px 8px #211d172e}.mobile-header{background:#fffdf7b8;-webkit-backdrop-filter:blur(18px) saturate(1.6);backdrop-filter:blur(18px) saturate(1.6);border-bottom:1px solid rgba(216,208,189,.45)}.modal-overlay{-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}.modal{border-radius:var(--radius)}.toast{border-radius:999px;background:#211d17e0;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);color:var(--paper)}.dash-hero{display:flex;align-items:center;flex-wrap:wrap;justify-content:center;gap:clamp(14px,4vw,36px);padding:clamp(18px,3vw,26px);margin-bottom:20px}.ring-wrap{position:relative;flex-shrink:0;width:128px;height:128px}.ring-center{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0}.ring-value{font-size:1.5rem;font-weight:600}.ring-label{font-size:.68rem;color:var(--ink-faint);text-transform:uppercase;letter-spacing:.1em}.dash-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;flex:1;min-width:0;min-width:200px}.dash-stat{display:flex;flex-direction:column;align-items:center;gap:2px;padding:12px 8px;border-radius:var(--radius);background:#fffdf78c;border:1px solid rgba(255,255,255,.6);box-shadow:inset 0 1px #ffffff80}.dash-stat-value{font-size:clamp(1rem,4vw,1.25rem);font-weight:600;white-space:nowrap}.dash-stat-label{font-size:.68rem;color:var(--ink-faint)}.dash-section-title{margin:22px 2px 10px;font-size:1.05rem}.topic-card{padding:6px 20px}.topic-row{padding:13px 0;border-bottom:1px dashed rgba(216,208,189,.7)}.topic-row:last-child{border-bottom:none}.topic-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:6px}.topic-head strong{font-weight:600;font-size:.9rem}.topic-pct{font-size:.8rem;font-weight:600;padding:1px 9px;border-radius:999px;background:#211d170f}.topic-pct.low{color:var(--accent);background:#a031231a}.topic-pct.high{color:var(--ok);background:#2e6b3f1a}.progress-track{height:9px;border-radius:999px;background:#d8d0bd73;overflow:hidden}.progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#27427c,#4a6db3);transition:width 1s cubic-bezier(.2,.7,.3,1)}.progress-fill.low{background:linear-gradient(90deg,#a03123,#c4553f)}.progress-fill.high{background:linear-gradient(90deg,#2e6b3f,#47915c)}.chart-card{padding:18px 14px 12px}@media(max-width:430px){.ring-wrap,.ring-wrap svg{width:106px!important;height:106px!important}.dash-stat-value{font-size:1rem}}[data-theme=dark]{--paper: #18150f;--paper-raised: #232019;--ink: #f2ede0;--ink-soft: #d0c8b6;--ink-faint: #b8ad99;--rule: #3d3830;--accent: #ff7a62;--accent-ink: #ff9a8a;--blue-ink: #a8c4ff;--ok: #7dd49a;--warn: #ffcc66}[data-theme=dark] body:before{background:radial-gradient(460px 460px at 88% -6%,rgba(143,176,239,.1),transparent 62%),radial-gradient(420px 420px at -8% 32%,rgba(224,96,74,.08),transparent 62%),radial-gradient(560px 560px at 55% 112%,rgba(92,171,112,.06),transparent 62%)}[data-theme=dark] body:after{background:radial-gradient(720px 520px at 18% 14%,rgba(143,176,239,.16),transparent 62%),radial-gradient(640px 460px at 82% 18%,rgba(224,96,74,.13),transparent 62%),radial-gradient(860px 600px at 50% 88%,rgba(92,171,112,.1),transparent 64%),radial-gradient(520px 380px at 38% 42%,rgba(143,176,239,.09),transparent 62%);opacity:.62;filter:blur(34px) saturate(1.25)}[data-theme=dark] .card{background:#232019d1;border-color:#ffffff1a;box-shadow:inset 0 1px #ffffff12,0 1px 2px #00000059,0 10px 30px #00000073}[data-theme=dark] .muted{color:var(--ink-soft);opacity:1}[data-theme=dark] .faint{color:var(--ink-faint);opacity:1}[data-theme=dark] .small.muted,[data-theme=dark] .small.faint{opacity:1}[data-theme=dark] .card.clickable:hover{box-shadow:inset 0 1px #ffffff0d,0 2px 4px #0000004d,0 16px 40px #00000073}[data-theme=dark] input,[data-theme=dark] select,[data-theme=dark] textarea{background:#1d1a15c7}[data-theme=dark] .btn.secondary{background:#ffffff12}[data-theme=dark] .sidebar{background:#1d1a15d1;border-right-color:#ffffff0f}[data-theme=dark] .tabbar{background:#1d1a15bd;border-color:#ffffff14}[data-theme=dark] .mobile-header{background:#1d1a15bd;border-bottom-color:#ffffff12}[data-theme=dark] .tab-bubble{background:#e0604a29}[data-theme=dark] .dash-stat,[data-theme=dark] .payment-card,[data-theme=dark] .course-code,[data-theme=dark] .course-code-inline{background:#ffffff0d;border-color:#ffffff17}[data-theme=dark] ::-webkit-scrollbar-thumb{background:#3a342b;border-color:var(--paper)}[data-theme=dark] ::selection{background:#e0604a4d}[data-theme=dark] .progress-track{background:#ffffff1f}[data-theme=dark] .badge{background:#ffffff14;border-color:#ffffff1f;color:var(--ink-soft)}[data-theme=dark] .badge.blue{background:#a8c4ff24;border-color:var(--blue-ink);color:var(--blue-ink)}[data-theme=dark] .badge.ok{background:#7dd49a24;border-color:var(--ok);color:var(--ok)}[data-theme=dark] .ai-feedback{background:#a8c4ff14;border-left-color:var(--blue-ink)}[data-theme=dark] svg circle[fill=none][stroke="rgba(216,208,189,.5)"]{stroke:#ffffff1a}.grading-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;display:grid;place-items:center;background:#f7f3ea8c;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}}.grading-card{display:flex;flex-direction:column;align-items:center;padding:28px 34px;min-width:280px;max-width:88vw;text-align:center;animation:pageIn .25s cubic-bezier(.2,.7,.3,1) both}.grading-ring{animation:spin 1.1s linear infinite;margin-bottom:14px}[data-theme=dark] .grading-overlay{background:#14120e99}.math-toolbar{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:6px}.math-btn{border:1px solid var(--rule);background:#fffdf7b3;border-radius:8px;padding:3px 9px;font-size:.78rem;cursor:pointer;color:var(--ink-soft);transition:all .12s ease}.math-btn:hover{color:var(--ink);border-color:var(--blue-ink);background:#27427c14}.math-btn:active{transform:scale(.94)}[data-theme=dark] .math-btn{background:#ffffff0d}.answer-preview{margin-top:8px;padding:10px 14px;border:1px dashed var(--rule);border-radius:var(--radius-sm);background:#27427c0a}.label-row{display:flex;align-items:center;justify-content:space-between;gap:10px}.kbd-switch{border:1.5px solid var(--blue-ink);color:var(--blue-ink);background:#27427c12;border-radius:999px;padding:3px 12px;font-size:.72rem;font-weight:600;cursor:pointer;transition:all .15s ease}.kbd-switch.on{background:var(--ink);border-color:var(--ink);color:var(--paper)}.kbd-switch:active{transform:scale(.95)}.answer-mathfield{display:block;width:100%;min-height:110px;padding:12px 14px;border:1px solid var(--rule);border-radius:var(--radius-sm);background:#fffdf7c7;font-size:1.08rem;--caret-color: var(--accent);--selection-background-color: rgba(39, 66, 124, .16);--keyboard-background: #f2ede1;--keycap-background: #fffdf7;--accent-color: var(--blue-ink)}.answer-mathfield:focus-within{outline:none;border-color:var(--blue-ink);box-shadow:0 0 0 3px #27427c1f}[data-theme=dark] .answer-mathfield{background:#ffffff0f;--keyboard-background: #24201a;--keycap-background: #2e2921}:root{--keycap-height: 56px;--keycap-gap: 6px;--keycap-font-size: 1.24rem;--keycap-glyph-size: 1.16rem;--keyboard-toolbar-font-size: .95rem;--keyboard-padding-horizontal: 0px;--keyboard-padding-top: 6px;--keyboard-padding-bottom: 8px;--keyboard-border: none;--keycap-border: none;--keycap-border-bottom: none;--keycap-border-radius: 4px;--keyboard-background: #f6f4ef;--keyboard-horizontal-rule: 1px solid rgba(216, 208, 189, .45);--keyboard-toolbar-text: var(--ink-soft);--keyboard-toolbar-text-active: #fffdf7;--keyboard-toolbar-background: transparent;--keyboard-toolbar-background-hover: rgba(33, 29, 23, .06);--keyboard-toolbar-background-selected: var(--ink);--keycap-background: #fffdf7;--keycap-background-hover: #faf7ef;--keycap-background-active: #ece7da;--keycap-background-pressed: #e0dacb;--keycap-text: var(--ink);--keycap-text-active: var(--ink);--keycap-secondary-background: #efece3;--keycap-secondary-text: var(--ink-soft);--mkb-tab-bg: #eceae4;--mkb-tab-text: #3c372e;--mkb-tab-active-bg: #26221b;--mkb-tab-active-text: #fffdf7;--mkb-digit: #f0f0ee}math-virtual-keyboard{width:100vw;max-width:100vw}[data-theme=dark]{--keyboard-background: #1d1a15;--keyboard-horizontal-rule: 1px solid rgba(255, 255, 255, .07);--keyboard-toolbar-text: var(--ink-soft);--keyboard-toolbar-text-active: #1d1a15;--keyboard-toolbar-background-selected: #fffdf7;--keycap-background: #2e2a22;--keycap-background-hover: #37322a;--keycap-background-active: #403a2f;--keycap-background-pressed: #26221b;--keycap-text: var(--ink);--keycap-border-bottom: none;--keycap-secondary-background: #26221c;--mkb-tab-bg: #3a342a;--mkb-tab-text: var(--ink);--mkb-tab-active-bg: #fffdf7;--mkb-tab-active-text: #1d1a15;--mkb-digit: #26221b}@media(max-width:430px){:root{--keycap-height: 50px;--keycap-gap: 5px;--keycap-font-size: 1.1rem;--keycap-glyph-size: 1.04rem;--keyboard-toolbar-font-size: .9rem;--keyboard-padding-horizontal: 5px;--keyboard-padding-top: 6px;--keyboard-padding-bottom: 8px}}@media(max-width:360px){:root{--keycap-height: 47px;--keycap-gap: 4px;--keycap-font-size: 1.02rem;--keyboard-toolbar-font-size: .85rem}}.switch{position:relative;display:inline-block;width:48px;height:28px;flex-shrink:0}.switch input{opacity:0;width:0;height:0}.switch-slider{position:absolute;top:0;right:0;bottom:0;left:0;background:#211d171f;border:1px solid var(--rule);border-radius:999px;cursor:pointer;transition:background .22s ease,border-color .22s ease}.switch-slider:before{content:"";position:absolute;left:3px;top:3px;width:20px;height:20px;border-radius:50%;background:var(--paper-raised);box-shadow:0 1px 3px #0000002e;transition:transform .22s cubic-bezier(.34,1.2,.6,1),background .22s ease}.switch input:checked+.switch-slider{background:var(--blue-ink);border-color:var(--blue-ink)}.switch input:checked+.switch-slider:before{transform:translate(20px);background:var(--paper)}.switch input:focus-visible+.switch-slider{box-shadow:0 0 0 3px #27427c26}[data-theme=dark] .switch-slider{background:#ffffff1a;border-color:#ffffff1f}[data-theme=dark] .switch input:checked+.switch-slider{background:var(--blue-ink)}