:root{--ink: #050505;--paper: #fffdf7;--white: #ffffff;--muted: #66636f;--line: #171717;--purple: #5b35e6;--purple-dark: #3216a8;--yellow: #ffd91f;--pink: #ff4f93;--green: #55e37c;--mint: #dbffe5;--blue: #3d7eff;--blue-soft: #e8ecff;--lavender: #efe8ff;--shadow: 6px 6px 0 var(--ink);--shadow-soft: 4px 4px 0 var(--ink);--radius: 8px;--site-scale: .75;color:var(--ink);background:var(--paper);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;line-height:1.45}*{box-sizing:border-box}html{background:var(--paper);scroll-behavior:smooth}@media(min-width:900px){html{zoom:var(--site-scale)}}@supports not (zoom: 1){@media(min-width:900px){body{width:calc(100% / var(--site-scale));transform:scale(var(--site-scale));transform-origin:top left}}}body{margin:0;min-width:320px;overflow-x:hidden;background:linear-gradient(90deg,rgba(5,5,5,.04) 1px,transparent 1px) 0 0 / 44px 44px,linear-gradient(0deg,rgba(5,5,5,.03) 1px,transparent 1px) 0 0 / 44px 44px,var(--paper)}button,input,select,textarea{font:inherit}button,a{color:inherit}button{cursor:pointer}a{text-decoration:none}.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}h1,h2,h3,p{margin-top:0}.app{min-height:100vh}.brand{display:flex;align-items:center;gap:14px}.brand-mark{display:grid;width:58px;height:58px;place-items:center;border:3px solid var(--ink);background:linear-gradient(135deg,var(--blue),var(--purple));box-shadow:4px 4px 0 var(--ink)}.brand strong{display:block;font-size:clamp(1.25rem,2vw,1.9rem);font-weight:950;line-height:.95}.brand span{display:block;margin-top:4px;color:var(--muted);font-weight:800}.brand-compact .brand-mark{width:54px;height:54px}.book-icon{width:34px;fill:none;stroke:#fff;stroke-linecap:round;stroke-linejoin:round;stroke-width:3.2}.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:12px 22px;border:3px solid var(--line);border-radius:6px;background:var(--white);box-shadow:var(--shadow-soft);font-weight:950;text-transform:uppercase;transition:transform .16s ease,box-shadow .16s ease,background .16s ease}.button:hover,.button:focus-visible{transform:translate(-2px,-2px);box-shadow:7px 7px 0 var(--ink)}.button:disabled{cursor:wait;opacity:.72;transform:none}.button-primary{color:var(--white);background:linear-gradient(135deg,var(--purple),#6f3cff)}.button-yellow{color:var(--ink);background:var(--yellow)}.button-pink{color:var(--white);background:var(--pink)}.button-ghost{background:var(--white)}.full-button{width:100%}.tag{display:inline-flex;align-items:center;width:fit-content;min-height:34px;padding:6px 14px;border:3px solid var(--ink);border-radius:4px;box-shadow:3px 3px 0 var(--ink);font-size:.82rem;font-weight:950;text-transform:uppercase}.tag-green{background:var(--green)}.tag-yellow{background:var(--yellow)}.icon-badge{display:inline-grid;width:48px;height:48px;flex:0 0 auto;place-items:center;border:3px solid var(--ink);border-radius:6px;box-shadow:3px 3px 0 var(--ink)}.tone-purple{color:#fff;background:var(--purple)}.tone-yellow{color:var(--ink);background:var(--yellow)}.tone-green{color:var(--ink);background:var(--green)}.tone-pink{color:#fff;background:var(--pink)}.tone-blue{color:#fff;background:var(--blue)}.tone-bg-green{background:#dbffe5}.tone-bg-yellow{background:#fff4b8}.tone-bg-pink{background:#ffe2ed}.tone-bg-blue{background:#ece9ff}.site-header{position:sticky;z-index:20;top:0;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:24px;padding:18px clamp(16px,4vw,54px);border-bottom:4px solid var(--ink);background:#fffdf7f0;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.desktop-nav{display:flex;align-items:center;justify-content:center;gap:clamp(16px,3vw,50px);font-weight:950;text-transform:uppercase}.desktop-nav a{padding:9px 14px;border:3px solid transparent}.desktop-nav .active-nav{border-color:var(--ink);background:var(--yellow);box-shadow:4px 4px 0 var(--ink)}.header-actions{display:flex;gap:16px}.menu-button{display:none;width:48px;height:48px;place-items:center;border:3px solid var(--ink);border-radius:6px;background:var(--yellow);box-shadow:var(--shadow-soft)}.mobile-nav{display:none}.hero-section{display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,.95fr);gap:clamp(24px,4vw,72px);align-items:center;min-height:calc(100vh - 98px);padding:clamp(34px,5vw,72px) clamp(16px,4vw,66px) 42px;overflow:hidden}.hero-copy{max-width:770px}.hero-copy h1{margin:22px 0 20px;font-size:clamp(3.4rem,8vw,8.2rem);font-weight:1000;line-height:.88;text-transform:uppercase}.hero-copy p{max-width:660px;font-size:clamp(1.05rem,2vw,1.35rem);font-weight:750}.hero-actions{display:flex;flex-wrap:wrap;gap:18px;margin:30px 0}.trust-strip{display:flex;flex-wrap:wrap;align-items:center;gap:18px;font-size:1.1rem}.avatar-row{display:flex;align-items:center}.mini-avatar{display:grid;width:46px;height:46px;place-items:center;margin-left:-8px;border:3px solid var(--ink);border-radius:999px;box-shadow:2px 2px 0 var(--ink);font-weight:950}.mini-avatar:first-child{margin-left:0}.avatar-0{background:#fff0c2}.avatar-1{background:#6ef0a1}.avatar-2{background:#ff70a9}.avatar-3{background:#c9bdff}.avatar-count{color:#fff;background:var(--purple);font-size:.88rem}.hero-visual{position:relative;min-height:600px}.mock-window{position:relative;min-height:470px;margin:18px 54px 0 0;border:4px solid var(--ink);border-radius:var(--radius);background:radial-gradient(circle at 85% 88%,var(--yellow) 0 90px,transparent 92px),linear-gradient(135deg,#7045ff,#4320d9 62%,#fff 62%);box-shadow:10px 10px 0 var(--ink)}.window-top{display:flex;gap:10px;padding:18px 20px}.window-top span{width:17px;height:17px;border:3px solid var(--ink);border-radius:999px;background:var(--yellow)}.mock-dashboard{display:grid;grid-template-columns:1.15fr .85fr;gap:16px;padding:18px}.mock-card{min-height:130px;padding:18px;border:3px solid var(--ink);border-radius:6px;background:#fffffff0;box-shadow:var(--shadow-soft)}.mock-card.wide{grid-column:1 / -1}.mock-card strong{display:block;margin-top:14px;font-size:1.2rem;font-weight:950}.mock-card p{color:var(--muted);font-weight:800}.mock-progress{height:18px;margin-top:18px;border:3px solid var(--ink);border-radius:999px;background:#fff;overflow:hidden}.mock-progress span{display:block;height:100%;background:var(--green)}.floating-card{position:absolute;right:0;display:flex;align-items:center;gap:14px;min-width:min(360px,80vw);padding:14px;border:4px solid var(--ink);border-radius:6px;background:var(--white);box-shadow:7px 7px 0 var(--ink);font-weight:950}.card-one{top:92px}.card-two{top:206px}.card-three{top:320px}.feature-band{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));border-top:4px solid var(--ink);border-bottom:4px solid var(--ink);background:var(--white)}.feature-card{display:flex;gap:18px;min-height:162px;padding:26px;border-right:3px solid var(--ink)}.feature-card:last-child{border-right:0}.feature-card h3{margin-bottom:7px;font-size:1rem;font-weight:950;text-transform:uppercase}.feature-card p{margin:0;color:var(--muted);font-size:.92rem;font-weight:700}.benefit-section{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(24px,4vw,54px);padding:clamp(46px,7vw,92px) clamp(16px,4vw,66px)}.benefit-section h2{margin-top:22px;font-size:clamp(2rem,4vw,4.4rem);line-height:.98;text-transform:uppercase}.benefit-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.benefit-card{padding:24px;border:3px solid var(--ink);border-radius:var(--radius);background:var(--white);box-shadow:var(--shadow)}.benefit-card h3{margin:18px 0 8px;font-size:1.15rem;font-weight:950}.benefit-card p{margin-bottom:0;color:var(--muted);font-weight:750}.how-section,.pricing-section,.about-section{scroll-margin-top:120px;padding:clamp(46px,7vw,92px) clamp(16px,4vw,66px);border-top:4px solid var(--ink)}.section-heading{display:grid;gap:18px;max-width:900px;margin-bottom:30px}.section-heading h2,.about-section h2{margin:0;font-size:clamp(2rem,4vw,4.4rem);font-weight:1000;line-height:.98;text-transform:uppercase}.step-grid,.pricing-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.step-card,.pricing-card,.about-card{position:relative;padding:24px;border:3px solid var(--ink);border-radius:var(--radius);background:var(--white);box-shadow:var(--shadow)}.step-number{position:absolute;top:18px;right:18px;display:grid;width:36px;height:36px;place-items:center;border:3px solid var(--ink);border-radius:999px;background:var(--yellow);font-weight:1000}.step-card h3,.pricing-card h3,.about-card h3{margin:18px 0 8px;font-size:1.2rem;font-weight:950}.step-card p,.pricing-card li,.about-section p,.about-card p{color:var(--muted);font-weight:750}.section-actions{display:flex;flex-wrap:wrap;gap:18px;margin-top:30px}.pricing-section{background:#fff}.pricing-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.pricing-card.featured{background:linear-gradient(135deg,#fff8c9,#fff)}.pricing-card>strong{display:block;margin:10px 0 18px;font-size:clamp(1.8rem,3vw,2.5rem);font-weight:1000}.pricing-card ul{display:grid;gap:10px;min-height:120px;padding:0;margin:0 0 22px;list-style:none}.pricing-card li{display:flex;align-items:center;gap:8px}.pricing-card li svg{color:#14a852;flex:0 0 auto}.pricing-card .button{width:100%}.about-section{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,520px);gap:clamp(24px,5vw,70px);align-items:center}.about-section>div:first-child p{max-width:820px;margin-top:20px;font-size:1.1rem}.about-card{background:radial-gradient(circle at 100% 100%,var(--pink) 0 55px,transparent 57px),linear-gradient(135deg,#f3eeff,#fff)}.about-card .button{margin-top:8px}.site-footer{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:28px;min-height:84px;padding:18px clamp(16px,4vw,66px);border-top:4px solid var(--ink);color:#fff;background:#050505}.site-footer strong{padding:18px 32px;color:var(--ink);background:var(--yellow);font-size:1.5rem;font-weight:1000}.site-footer span{font-size:1.1rem;font-weight:850}.footer-socials{display:flex;gap:10px}.footer-socials span{display:grid;width:36px;height:36px;place-items:center;border:2px solid #fff}.login-page{display:grid;grid-template-columns:minmax(320px,.9fr) minmax(320px,1fr);min-height:100vh;padding:clamp(18px,4vw,54px);gap:clamp(28px,5vw,82px);border:4px solid var(--ink);background:radial-gradient(circle at 2% 82%,var(--pink) 0 90px,transparent 92px),radial-gradient(circle at 98% 3%,var(--yellow) 0 96px,transparent 98px),var(--paper)}.login-intro{position:relative;display:flex;flex-direction:column;justify-content:center;max-width:650px}.login-intro h1{margin:42px 0 22px;font-size:clamp(3.5rem,8vw,7.5rem);font-weight:1000;line-height:.88;text-transform:uppercase}.login-intro h1 span{display:inline-block;margin-top:8px;padding:0 18px 8px;border:4px solid var(--ink);background:var(--yellow);box-shadow:var(--shadow)}.login-intro p{max-width:500px;margin-top:20px;font-size:1.1rem;font-weight:750}.burst{position:absolute;top:23%;left:-2%;display:grid;width:90px;height:90px;place-items:center;border:4px solid var(--ink);background:var(--pink);clip-path:polygon(50% 0%,62% 28%,91% 11%,74% 41%,100% 50%,72% 62%,89% 91%,58% 75%,50% 100%,38% 72%,9% 89%,26% 58%,0% 50%,28% 39%,11% 9%,42% 25%);font-size:1.6rem;font-weight:1000}.login-perks{display:grid;gap:18px;margin-top:32px}.login-perk{display:flex;align-items:center;gap:16px}.login-perk strong,.login-perk span{display:block}.login-perk strong{font-weight:950}.login-perk span{color:var(--muted);font-weight:700}.auth-card{align-self:center;width:min(100%,620px);justify-self:center;padding:clamp(28px,4vw,58px);border:4px solid var(--ink);border-radius:var(--radius);background:#ffffffc2;box-shadow:12px 12px 0 var(--purple);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.auth-card h2{margin-bottom:0;font-size:clamp(3rem,6vw,5rem);line-height:.9;text-align:center;text-transform:uppercase}.auth-card>p{margin:12px 0 34px;text-align:center;font-size:1.2rem;font-weight:900}.input-row{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;min-height:70px;margin-bottom:18px;padding:0 18px;border:3px solid var(--ink);border-radius:4px;background:var(--white)}.input-row input,.search-box input,.source-option input,.ask-anything input{width:100%;border:0;outline:0;background:transparent;color:var(--ink);font-weight:800}.input-row input::placeholder,.search-box input::placeholder,.source-option input::placeholder,.ask-anything input::placeholder{color:#8e8b93}.auth-options{display:flex;justify-content:space-between;gap:16px;margin:10px 0 28px;font-weight:800}.auth-message{margin:-2px 0 18px;padding:12px 14px;border:3px solid var(--ink);border-radius:4px;font-size:.95rem;font-weight:900;line-height:1.35}.auth-error{background:#ffe1e1;color:#8f1717}.auth-success{background:#e1f8df;color:#206b29}.auth-options label{display:flex;gap:8px}.auth-options a,.signup-copy button,.recent-card a{border:0;background:none;color:var(--purple-dark);font-weight:950;text-decoration:underline}.divider{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:22px;margin:30px 0;font-weight:950}.divider span{height:3px;background:var(--ink)}.google-button{display:flex;width:100%;min-height:64px;align-items:center;justify-content:center;gap:18px;border:3px solid var(--ink);border-radius:4px;background:var(--white);font-size:1.1rem;font-weight:900}.google-button span{color:#4285f4;font-size:1.7rem;font-weight:1000}.signup-copy{margin:28px 0 0;text-align:center;font-weight:800}.shell,.review-shell{display:grid;grid-template-columns:328px minmax(0,1fr);min-height:100vh;background:var(--paper)}.sidebar{position:sticky;top:0;height:100vh;display:flex;flex-direction:column;gap:16px;padding:22px 18px;border-right:4px solid var(--ink);background:var(--white);overflow-x:hidden;overflow-y:auto;scrollbar-width:none}.sidebar::-webkit-scrollbar{display:none}@media(min-width:900px){.shell,.review-shell{min-height:calc(100svh / var(--site-scale))}.sidebar{height:calc(100svh / var(--site-scale))}@supports (height: 100dvh){.shell,.review-shell{min-height:calc(100dvh / var(--site-scale))}.sidebar{height:calc(100dvh / var(--site-scale))}}}.sidebar-account{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:12px;padding:12px;border:3px solid var(--ink);border-radius:6px;background:#f7fff3;box-shadow:4px 4px 0 var(--green)}.account-avatar{display:grid;width:42px;height:42px;place-items:center;border:3px solid var(--ink);border-radius:50%;background:var(--yellow);font-weight:1000}.sidebar-account strong,.sidebar-account span{display:block;min-width:0}.sidebar-account strong{overflow:hidden;font-weight:950;text-overflow:ellipsis;white-space:nowrap}.sidebar-account div>span{display:flex;align-items:center;gap:6px;overflow:hidden;color:var(--muted);font-size:.82rem;font-weight:850;text-overflow:ellipsis;white-space:nowrap}.sidebar-account svg{flex:0 0 auto}.side-nav{display:grid;gap:6px}.side-nav button{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;min-height:46px;padding:8px 12px;border:0;border-radius:6px;background:transparent;font-weight:950;text-align:left;width:calc(100% - 4px)}.side-nav button.active{color:#fff;background:linear-gradient(135deg,var(--purple),#6d35ff);box-shadow:3px 3px 0 var(--ink)}.side-nav .logout-nav{color:#8f1717;background:#ffe1e1}.side-nav button b{padding:3px 7px;border-radius:4px;color:#fff;background:var(--pink);font-size:.72rem}.premium-card{margin-top:auto;padding:20px;border:3px solid var(--ink);border-radius:var(--radius);background:linear-gradient(135deg,#f5efff,#fff);box-shadow:var(--shadow-soft)}.premium-card h3{margin:10px 0;font-size:1.25rem;font-weight:950}.premium-card p{color:var(--muted);font-weight:750}.workspace,.review-main{min-width:0}.workspace-topbar{position:sticky;z-index:15;top:0;display:grid;grid-template-columns:minmax(240px,560px) 1fr;gap:18px;align-items:center;padding:24px;border-bottom:4px solid var(--ink);background:#fffdf7f0;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.search-box{display:flex;align-items:center;gap:14px;min-height:54px;padding:0 18px;border:3px solid var(--ink);border-radius:6px;background:#fff}.profile-area{position:relative;display:flex;align-items:center;justify-content:flex-end;gap:18px}.premium-pill{display:inline-flex;align-items:center;gap:7px;color:var(--purple-dark);font-weight:950}.icon-button,.profile-button{position:relative;display:inline-flex;align-items:center;gap:10px;min-height:48px;border:0;background:transparent;font-weight:950}.icon-button i{position:absolute;top:6px;right:6px;width:9px;height:9px;border-radius:999px;background:var(--pink)}.profile-button span{display:grid;width:46px;height:46px;place-items:center;border:3px solid var(--ink);border-radius:4px;background:var(--yellow);box-shadow:3px 3px 0 var(--ink)}.profile-menu{position:absolute;z-index:30;top:calc(100% + 12px);right:0;display:grid;gap:8px;width:min(280px,86vw);padding:14px;border:3px solid var(--ink);border-radius:var(--radius);background:var(--white);box-shadow:var(--shadow-soft)}.profile-menu strong,.profile-menu small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.profile-menu small{color:var(--muted);font-weight:800}.profile-menu button{display:flex;align-items:center;gap:10px;min-height:42px;margin-top:6px;padding:8px 10px;border:3px solid var(--ink);border-radius:5px;color:#8f1717;background:#ffe1e1;font-weight:950}.dashboard-grid{display:grid;grid-template-columns:minmax(0,1fr) 355px;gap:24px;padding:24px}.main-panel,.builder-card,.upload-card,.recent-card,.performance-card,.answer-key-card,.question-review-card,.review-explanation,.report-actions{border:3px solid var(--ink);border-radius:var(--radius);background:var(--white)}.main-panel{overflow:hidden}.dashboard-header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding:28px}.dashboard-header h1,.review-header h1{margin-bottom:8px;font-size:clamp(2rem,3.5vw,3rem);line-height:1}.dashboard-header p,.review-header p{margin:0;font-size:1.05rem;font-weight:850}.mode-tabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:3px solid var(--ink);border-bottom:3px solid var(--ink)}.mode-tabs button{display:flex;align-items:center;gap:12px;min-height:82px;padding:18px 28px;border:0;border-right:3px solid var(--ink);background:#fff;font-weight:950;text-align:left}.mode-tabs button:last-child{border-right:0}.mode-tabs button.active{color:#fff;background:linear-gradient(135deg,var(--purple),#6539ff)}.mode-tabs small{display:block;margin-top:3px;color:inherit;font-weight:750;opacity:.88}.mode-tabs b{margin-left:7px;padding:2px 6px;border-radius:4px;color:#fff;background:var(--pink);font-size:.72rem}.builder-card{margin:18px;padding:clamp(20px,3vw,28px)}.tab-panel{display:grid;gap:18px;padding:clamp(22px,4vw,38px)}.tab-panel h2{margin:0;font-size:clamp(2rem,4vw,3.6rem);line-height:.95;text-transform:uppercase}.tab-panel>p{max-width:720px;color:var(--muted);font-size:1.05rem;font-weight:800}.tab-panel .ai-panel,.tab-panel .recent-card{max-width:760px}.form-section+.form-section{margin-top:26px}.form-section h2{margin-bottom:16px;font-size:1.15rem;font-weight:950}.source-grid{position:relative;display:grid;grid-template-columns:1fr auto 1fr;gap:18px;align-items:center}.source-option{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:20px;min-height:104px;padding:18px 22px;border:3px solid var(--ink);border-radius:7px;color:var(--ink);background:#fff;cursor:pointer;text-align:left}.source-option.active{border-color:var(--purple);box-shadow:inset 0 0 0 2px #5b35e624}.source-option strong,.source-option small{display:block}.source-option small{color:var(--muted);font-weight:750}.source-option input{display:block;margin-top:8px;font-size:.95rem}.source-option input.visually-hidden,.upload-card input.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.or-chip{display:grid;width:36px;height:36px;place-items:center;border:2px solid var(--ink);border-radius:999px;background:#fff;font-size:.85rem;font-weight:950}.question-type-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.number-card{display:grid;gap:14px;padding:16px;border:3px solid var(--ink);border-radius:7px;background:#fff}.number-heading{display:flex;align-items:center;gap:12px;min-width:0}.number-heading .icon-badge{width:40px;height:40px}.number-card input{width:100%;min-height:48px;padding:0 12px;border:2px solid var(--ink);border-radius:5px;font-weight:950}.difficulty-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.difficulty-row button{min-height:54px;border:3px solid var(--ink);border-radius:6px;background:#fff;box-shadow:3px 3px 0 var(--ink);font-weight:950}.difficulty-row button.selected{color:#fff;background:var(--purple)}.generate-button{width:min(100%,520px);margin:28px auto 8px;display:flex}.generation-error{width:min(100%,720px);margin:22px auto 0;padding:12px 14px;border:3px solid var(--ink);border-radius:6px;color:#8f1717;background:#ffe1e1;font-weight:900}.dashboard-side{display:grid;align-content:start;gap:22px}.stats-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.stat-card,.result-stat{min-height:132px;padding:18px;border:3px solid var(--ink);border-radius:var(--radius);box-shadow:var(--shadow-soft)}.stat-card strong,.result-stat strong{display:block;margin-top:12px;font-size:2rem;font-weight:1000;line-height:1}.stat-card span,.result-stat span{font-weight:850}.upload-card,.recent-card{padding:18px;box-shadow:var(--shadow-soft)}.upload-card h3,.recent-card h3{display:flex;align-items:center;gap:8px;margin-bottom:2px;font-weight:950}.upload-card p{color:var(--muted);font-weight:750}.upload-card label{display:grid;width:100%;min-height:108px;place-items:center;border:3px dashed var(--purple);border-radius:6px;color:var(--purple-dark);background:#f8f5ff;cursor:pointer;font-weight:950}.upload-card label span{color:var(--muted);font-size:.9rem}.recent-card header{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.recent-list{display:grid;gap:12px}.recent-item{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:10px;align-items:center;padding-bottom:12px;border-bottom:1px solid #dad7df}.recent-item:last-child{padding-bottom:0;border-bottom:0}.recent-item .icon-badge{width:38px;height:38px}.recent-item strong,.recent-item small{display:block}.recent-item strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.88rem;font-weight:950}.recent-item small{color:var(--muted);font-size:.76rem;font-weight:700}.recent-item b{padding:4px 7px;border-radius:4px;background:var(--green);font-size:.78rem}.ai-banner{display:grid;grid-template-columns:auto 1fr auto;gap:22px;align-items:center;margin:0 24px 24px;padding:18px 26px;border:3px solid var(--ink);border-radius:var(--radius);color:#fff;background:radial-gradient(circle at 80% 42%,rgba(255,217,31,.9) 0 8px,transparent 10px),linear-gradient(135deg,var(--purple),#5e31f0);box-shadow:var(--shadow)}.ai-banner h3,.ai-banner p{margin:0}.ai-banner .button{color:var(--ink)}.robot-face{display:grid;width:62px;height:62px;place-items:center;border:4px solid var(--ink);border-radius:999px;color:#fff;background:radial-gradient(circle at 34% 42%,var(--green) 0 4px,transparent 5px),radial-gradient(circle at 64% 42%,var(--green) 0 4px,transparent 5px),linear-gradient(135deg,#24107f,var(--purple));box-shadow:4px 4px 0 var(--ink)}.deep-mode-layout{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:22px;align-items:start}.deep-config-panel,.deep-analysis-panel{min-width:0}.deep-grid{display:grid;grid-template-columns:1fr;gap:14px}.select-like{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;min-height:78px;padding:14px;border:3px solid var(--ink);border-radius:7px;background:#fff;text-align:left}.select-like small,.select-like select{display:block}.select-like small{color:var(--muted);font-weight:800}.select-like select{width:100%;border:0;outline:0;appearance:none;background:transparent;color:var(--ink);font-weight:950}.deep-insight-grid{display:grid;grid-template-columns:1fr;gap:14px}.deep-insight{display:flex;gap:14px;padding:16px;border:3px solid var(--ink);border-radius:7px;background:#fff}.deep-insight strong{font-weight:950}.deep-insight p{margin:4px 0 0;color:var(--muted);font-size:.91rem;font-weight:750}.trend-panel{display:grid;grid-template-columns:1fr;gap:24px;margin-top:26px;padding:22px;border:3px solid var(--ink);border-radius:var(--radius);background:linear-gradient(135deg,#f2fff6,#f8f5ff)}.trend-panel h3{margin:16px 0 6px;font-size:1.35rem}.trend-panel p{margin:0;color:var(--muted);font-weight:750}.trend-bars{display:grid;gap:14px;align-content:center}.trend-bars div{display:grid;gap:6px}.trend-bars span{font-weight:950}.trend-bars b{display:block;height:13px;border:2px solid var(--ink);border-radius:999px;background:var(--green)}.test-page{display:grid;grid-template-rows:auto minmax(0,1fr) auto;row-gap:12px;width:100%;height:100svh;max-height:100svh;min-height:0;padding:18px;background:var(--paper);overflow:hidden}@supports (height: 100dvh){.test-page{height:100dvh;max-height:100dvh}}@media(min-width:900px){.test-page{height:calc(100svh / var(--site-scale));max-height:calc(100svh / var(--site-scale))}@supports (height: 100dvh){.test-page{height:calc(100dvh / var(--site-scale));max-height:calc(100dvh / var(--site-scale))}}}.test-topbar{display:grid;grid-template-columns:320px 190px minmax(220px,1fr) auto;gap:18px;align-items:center}.timer-card,.test-progress,.question-sidebar,.question-panel,.ai-panel,.test-footer{border:3px solid var(--ink);border-radius:var(--radius);background:var(--white)}.timer-card{display:flex;gap:12px;align-items:center;min-height:76px;padding:14px;box-shadow:var(--shadow-soft)}.timer-card strong,.timer-card span{display:block}.timer-card strong{font-size:1.35rem;line-height:1}.test-progress{padding:14px 18px}.test-progress{display:grid;grid-template-columns:1fr auto;gap:10px}.test-progress div{grid-column:1 / -1;height:18px;border:3px solid var(--ink);border-radius:999px;overflow:hidden}.test-progress b{display:block;height:100%;background:var(--purple)}.test-actions{display:flex;gap:14px}.test-layout{display:grid;grid-template-columns:310px minmax(0,1fr);align-items:stretch;gap:20px;min-height:0;height:100%;margin-top:0;overflow:hidden}.question-sidebar,.question-panel,.ai-panel{padding:18px}.question-sidebar{display:grid;align-content:start;gap:12px;height:100%;min-height:0;overflow:auto;scrollbar-width:none}.question-sidebar::-webkit-scrollbar{display:none}.question-sidebar>button{display:flex;justify-content:space-between;gap:12px;min-height:52px;padding:10px 14px;border:3px solid var(--ink);border-radius:5px;background:#fff;font-weight:950}.question-sidebar>button.active{color:#fff;background:var(--purple)}.question-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin-top:8px}.question-grid button{aspect-ratio:1;border:3px solid var(--ink);border-radius:5px;background:#fff;box-shadow:2px 2px 0 var(--ink);font-weight:950}.question-grid .answered{background:var(--green)}.question-grid .review{color:#fff;background:var(--pink)}.question-grid .current{color:#fff;background:var(--purple)}.legend-row{display:flex;flex-wrap:wrap;gap:10px;font-size:.78rem;font-weight:800}.legend-row span{display:flex;align-items:center;gap:5px}.legend-row i{width:15px;height:15px;border:2px solid var(--ink);border-radius:3px;background:#fff}.legend-row i.answered{background:var(--green)}.legend-row i.review{background:var(--pink)}.prev-section{margin-top:24px}.question-panel{display:grid;grid-template-rows:auto minmax(0,1fr) auto;height:100%;min-height:0;overflow:hidden}.question-panel>header{display:grid;grid-template-columns:auto 1fr auto auto;gap:14px;align-items:center;padding-bottom:16px;border-bottom:3px solid var(--ink)}.question-panel>header button{display:grid;width:42px;height:42px;place-items:center;border:3px solid var(--ink);border-radius:5px;background:#fff}.question-type{display:inline-flex;align-items:center;min-height:36px;padding:5px 12px;border:3px solid var(--ink);border-radius:5px;color:#fff;background:var(--purple);box-shadow:2px 2px 0 var(--ink);font-weight:950}.question-type.small{min-height:28px;padding:3px 8px;font-size:.76rem}.marks{display:flex;gap:12px;font-weight:950}.marks b{color:#13a852}.marks em{color:var(--pink);font-style:normal}.question-body{display:grid;gap:18px;align-content:stretch;padding:24px;border:3px solid var(--ink);border-radius:6px;margin:18px 0;min-height:0;overflow:auto;scrollbar-width:none}.question-body::-webkit-scrollbar{display:none}.question-body h1{align-self:start}.question-body h1{font-size:1.25rem;line-height:1.55}.formula-line{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:clamp(1.15rem,2vw,1.55rem);font-weight:900}.formula-line i{display:block;width:min(9vw,86px);height:3px;background:var(--ink);transform:rotate(-20deg)}.option-list{display:grid;gap:14px}.option-list button{display:flex;align-items:center;gap:16px;min-height:72px;padding:14px 18px;border:3px solid var(--ink);border-radius:7px;background:#fff;font-size:1rem;font-weight:900;text-align:left}.option-list button.selected{border-color:#19b954;background:#eafff0}.option-list span{display:grid;width:44px;height:44px;flex:0 0 auto;place-items:center;border:3px solid var(--ink);border-radius:999px;background:var(--green);font-weight:950}.review-check{display:flex;align-items:center;gap:10px;font-weight:850}.review-check input{width:22px;height:22px;accent-color:var(--purple)}.written-answer{display:grid;gap:10px;font-weight:950}.written-answer textarea{width:100%;min-height:150px;resize:vertical;padding:14px;border:3px solid var(--ink);border-radius:7px;outline:0;background:#fff;font-weight:800}.question-panel footer{display:flex;justify-content:space-between;gap:14px}.answer-summary-panel{min-height:0}.answer-summary-list{display:grid;gap:12px;padding:18px 0;min-height:0;overflow:auto;scrollbar-width:none}.answer-summary-list::-webkit-scrollbar{display:none}.summary-score-card{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.summary-score-card div{padding:14px;border:3px solid var(--ink);border-radius:7px;background:var(--white)}.summary-score-card span,.summary-score-card strong{display:block}.summary-score-card span{color:var(--muted);font-weight:850}.summary-score-card strong{margin-top:6px;font-size:1.8rem;line-height:1}.answer-summary-list article{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:14px;align-items:start;padding:14px;border:3px solid var(--ink);border-radius:7px;background:#fff}.answer-summary-list article>strong{display:grid;width:44px;height:44px;place-items:center;border:3px solid var(--ink);border-radius:999px;background:var(--yellow)}.answer-summary-list article.correct{background:#eafff0}.answer-summary-list article.incorrect{background:#ffe1e1}.answer-summary-list p{margin:0 0 8px;font-weight:900}.answer-summary-list span{display:block;color:var(--muted);font-weight:800}.answer-summary-list em{display:block;margin-top:8px;color:#8f1717;font-style:normal;font-weight:850}.ai-panel{align-self:start}.ai-panel header{display:flex;align-items:center;justify-content:space-between;margin:-18px -18px 18px;padding:14px 18px;border-bottom:3px solid var(--ink)}.ai-panel header span{display:flex;align-items:center;gap:8px;font-weight:950}.ai-panel header b{padding:3px 7px;border-radius:4px;color:#fff;background:#19b954;font-size:.7rem}.ai-message{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start}.ai-message p{margin:0;padding:18px;border:3px solid var(--ink);border-radius:var(--radius);background:#faf7ff;font-weight:800}.ai-action-grid{display:grid;grid-template-columns:1fr .55fr;gap:12px;margin:22px 0}.ai-action-grid button{min-height:46px;border:3px solid var(--purple);border-radius:5px;color:var(--purple-dark);background:#fff;font-weight:950}.quick-notes,.explanation-preview{margin-top:18px;padding:16px;border:2px solid #a48cff;border-radius:7px;background:#f4efff}.quick-notes h3,.explanation-preview h3,.review-explanation h3,.report-actions h3{margin-bottom:8px;font-size:1rem;font-weight:950}.quick-notes p,.explanation-preview p{margin:0;font-weight:750}.explanation-preview .button{width:100%;margin-top:16px;min-height:44px}.test-footer{align-self:end;display:grid;grid-template-columns:1.2fr .6fr .5fr 1fr auto;gap:18px;align-items:center;margin-top:0;padding:18px 28px;color:#fff;background:linear-gradient(135deg,var(--purple),#5f32ed)}.test-footer span{display:block}.test-footer b{display:block;color:#e8ddff}.test-footer mark{padding:4px 8px;border:2px solid var(--ink);border-radius:4px;background:var(--yellow);font-weight:950}.review-main{padding:0 0 28px}.review-header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px;border-bottom:4px solid var(--ink);background:var(--paper)}.review-header>div:last-child{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:14px}.review-content{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:20px;padding:24px}.review-left{display:grid;gap:20px;min-width:0}.result-stats{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px}.result-stat{min-height:112px;box-shadow:none}.result-stat strong{font-size:clamp(1.7rem,3vw,2.3rem)}.performance-card{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px;padding:24px}.donut-card{display:grid;grid-template-columns:auto 1fr;gap:24px;align-items:center;border-right:2px solid #dfdce5;padding-right:24px}.donut{display:grid;width:170px;aspect-ratio:1;place-items:center;border-radius:999px;background:radial-gradient(circle,#fff 0 44%,transparent 45%),conic-gradient(#18bf60 0 78.5%,var(--pink) 78.5% 95%,#cfc9dd 95% 100%);border:3px solid var(--ink)}.donut span{display:grid;place-items:center;width:104px;height:104px;border-radius:999px;background:#fff;font-weight:850}.donut strong{font-size:1.45rem}.donut-legend{display:grid;gap:14px;font-weight:850}.donut-legend span,.report-actions span{display:flex;align-items:center;gap:8px}.donut-legend i{width:13px;height:13px;border:2px solid var(--ink);border-radius:999px}.donut-legend .good{background:#18bf60}.donut-legend .bad{background:var(--pink)}.donut-legend .skip{background:#cfc9dd}.section-performance h2,.answer-key-card h2,.question-review-card h2{margin-bottom:18px;font-size:1.15rem;font-weight:950}.bar-row{display:grid;grid-template-columns:1fr auto;gap:7px 16px;margin-bottom:14px;font-weight:900}.bar-row div{grid-column:1 / -1;height:12px;border-radius:999px;background:#e7e5ea;overflow:hidden}.bar-row i{display:block;height:100%;border:2px solid var(--ink);border-radius:999px;background:#18bf60}.answer-key-card,.question-review-card,.test-object-card{padding:18px}.answer-key-card header,.question-review-card header,.test-object-card header{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:14px}.test-object-card{border:3px solid var(--ink);border-radius:var(--radius);background:#101010;color:#fff;box-shadow:var(--shadow)}.test-object-card pre{max-height:420px;margin:0;overflow:auto;padding:18px;border:2px solid #494949;border-radius:6px;background:#050505;color:#dbffe5;font-size:.9rem;line-height:1.55;scrollbar-width:none}.test-object-card pre::-webkit-scrollbar{display:none}.answer-key-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.answer-key-grid article{padding:14px;border:2px solid var(--ink);border-radius:6px;background:#fafafa}.answer-key-grid strong,.answer-key-grid span{display:block;font-weight:950}.answer-key-grid span{color:#14944b}.answer-key-grid p{margin:8px 0 0;color:var(--muted);font-size:.9rem;font-weight:750}.filter-pills{display:flex;flex-wrap:wrap;gap:10px}.filter-pills button{min-height:40px;padding:6px 16px;border:3px solid var(--ink);border-radius:5px;background:#fff;box-shadow:3px 3px 0 var(--ink);font-weight:950}.filter-pills .active{color:#fff;background:var(--purple)}.review-question-list{display:grid;gap:10px}.review-question{display:grid;grid-template-columns:62px auto auto minmax(0,1fr) auto auto;gap:12px;align-items:center;min-height:66px;border:3px solid var(--ink);border-radius:6px;overflow:hidden}.review-question>strong{align-self:stretch;display:grid;place-items:center;border-right:2px solid var(--ink)}.review-question.correct>strong{background:#dfffe8}.review-question.incorrect>strong{background:#ffd1e3}.review-question.skipped>strong{background:#fff1a1}.review-question svg{color:#15aa52}.review-question.incorrect svg{color:var(--pink)}.review-question p{min-width:0;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:800}.review-question b{padding-right:8px;color:#13a852;white-space:nowrap}.review-question.incorrect b{color:var(--pink)}.review-question.skipped b{color:var(--muted)}.dash{display:grid;width:24px;height:24px;place-items:center;border-radius:999px;background:var(--yellow);font-weight:950}.centered{margin:16px auto 0}.report-banner{display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;padding:18px 24px;border:3px solid var(--ink);border-radius:var(--radius);background:linear-gradient(135deg,#efe8ff,#fff);box-shadow:var(--shadow)}.report-banner h3,.report-banner p{margin:0}.review-explanation{margin-top:18px;padding:16px}.review-explanation header{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px}.review-explanation header span{padding:5px 9px;border:2px solid var(--pink);border-radius:4px;background:#ffd8e8;color:#8b0b42;font-weight:950}.review-explanation strong{display:block;margin-top:12px}.review-explanation p{margin:6px 0;font-weight:750}.wrong{color:var(--pink)}.right{color:#15964d}.report-actions{display:grid;gap:9px;margin-top:14px;padding:16px;background:#fbfbff}.report-actions span{font-weight:800}.ask-anything{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:center;margin-top:14px;min-height:52px;padding:0 12px;border:3px solid #a48cff;border-radius:7px;background:#f4efff}@media(max-width:1300px){.feature-band{grid-template-columns:repeat(3,minmax(0,1fr))}.feature-card{border-bottom:3px solid var(--ink)}.dashboard-grid,.review-content,.test-layout{grid-template-columns:1fr}.dashboard-side{grid-template-columns:1fr 1fr}.stats-grid{grid-column:1 / -1;grid-template-columns:repeat(4,minmax(0,1fr))}.ai-panel{max-width:none}.test-topbar{grid-template-columns:1fr 190px}.test-progress,.test-actions{grid-column:1 / -1}.test-actions{flex-wrap:wrap}.test-footer{grid-template-columns:repeat(2,minmax(0,1fr))}.test-layout{grid-template-columns:260px minmax(0,1fr)}}@media(max-width:1050px){.site-header{grid-template-columns:1fr auto}.desktop-nav,.header-actions{display:none}.menu-button{display:grid;justify-self:end}.mobile-nav{grid-column:1 / -1;display:none;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding-top:16px;border-top:3px solid var(--ink)}.site-header.menu-open .mobile-nav{display:grid}.mobile-nav a,.mobile-nav button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 12px;border:3px solid var(--ink);border-radius:6px;background:var(--white);box-shadow:3px 3px 0 var(--ink);font-weight:950;text-align:center;text-transform:uppercase}.mobile-nav .primary-mobile-action{color:var(--white);background:var(--purple)}.hero-section,.benefit-section,.about-section,.login-page,.performance-card,.deep-mode-layout,.trend-panel{grid-template-columns:1fr}.hero-section{min-height:auto}.hero-visual{min-height:520px}.feature-band,.benefit-grid,.step-grid,.pricing-grid,.question-type-grid,.deep-grid,.deep-insight-grid,.answer-key-grid,.result-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.shell,.review-shell{grid-template-columns:1fr}.sidebar{position:static;height:auto;border-right:0;border-bottom:4px solid var(--ink)}.side-nav{grid-template-columns:repeat(2,minmax(0,1fr))}.premium-card{margin-top:0}.donut-card{border-right:0;border-bottom:2px solid #dfdce5;padding-right:0;padding-bottom:24px}}@media(max-width:760px){:root{--shadow: 4px 4px 0 var(--ink);--shadow-soft: 3px 3px 0 var(--ink)}.button{min-height:48px;padding:10px 14px;font-size:.86rem}.workspace-topbar,.review-header,.dashboard-header,.report-banner,.ai-banner,.test-footer{grid-template-columns:1fr}.site-header{grid-template-columns:1fr auto;gap:12px;padding:12px}.mobile-nav{grid-template-columns:1fr}.hero-copy h1,.login-intro h1{font-size:3.6rem;line-height:.9}.hero-section,.benefit-section,.how-section,.pricing-section,.about-section{padding:34px 14px}.hero-actions,.section-actions{display:grid;grid-template-columns:1fr}.hero-actions .button,.section-actions .button{width:100%}.trust-strip{align-items:flex-start;flex-direction:column}.hero-visual{min-height:auto}.mock-window{min-height:auto;margin:0}.mock-dashboard,.source-grid,.mode-tabs,.dashboard-side,.stats-grid,.feature-band,.benefit-grid,.step-grid,.pricing-grid,.question-type-grid,.difficulty-row,.deep-grid,.deep-insight-grid,.answer-key-grid,.result-stats{grid-template-columns:1fr}.floating-card{position:static;min-width:0;margin-top:12px}.mock-card{min-height:auto}.step-card,.pricing-card,.about-card,.benefit-card{padding:18px}.feature-card{border-right:0;min-height:auto;padding:20px}.site-footer{grid-template-columns:1fr;text-align:center}.footer-socials{justify-content:center}.auth-options,.profile-area,.review-header>div:last-child,.test-actions,.question-panel footer{align-items:stretch;flex-direction:column}.workspace-topbar{padding:16px}.search-box{min-height:48px}.profile-area{display:grid;grid-template-columns:1fr auto;gap:12px;justify-content:stretch}.premium-pill{grid-column:1 / -1}.dashboard-grid,.review-content{padding:16px;gap:16px}.builder-card{margin:12px;padding:16px}.side-nav{display:flex;gap:10px;overflow-x:auto;padding-bottom:8px;scrollbar-width:thin}.side-nav button{grid-template-columns:auto auto auto;min-width:max-content;min-height:46px;padding:9px 12px}.premium-card{display:none}.sidebar{gap:14px;padding:14px}.source-grid .or-chip{justify-self:center}.question-panel>header,.test-topbar{grid-template-columns:1fr}.test-page{row-gap:8px;padding:12px}.test-layout{grid-template-columns:1fr;gap:12px;height:100%;overflow:auto;scrollbar-width:none}.test-layout::-webkit-scrollbar{display:none}.question-sidebar{max-height:230px}.summary-score-card{grid-template-columns:repeat(2,minmax(0,1fr))}.timer-card,.test-progress,.question-sidebar,.question-panel,.ai-panel,.test-footer{box-shadow:none}.question-panel{min-height:520px;padding:14px}.question-body{padding:16px;margin:14px 0}.question-body h1{font-size:1rem}.option-list button{min-height:60px;padding:12px}.option-list span{width:38px;height:38px}.test-footer{padding:10px 12px}.review-question{grid-template-columns:54px auto 1fr auto;padding-right:8px}.review-question .question-type,.review-question b{grid-column:3 / -1;justify-self:start}.review-question p{grid-column:3 / -1;white-space:normal}.review-question>svg:last-child{display:none}.ai-message{grid-template-columns:1fr}.report-banner,.ai-banner{padding:16px}}@media(max-width:480px){.login-page,.test-page{padding:10px}.login-page{border-width:0}.auth-card{padding:20px;box-shadow:6px 6px 0 var(--purple)}.auth-card h2{font-size:2.8rem}.input-row{min-height:58px}.brand strong{font-size:1.05rem}.brand-mark,.brand-compact .brand-mark{width:46px;height:46px}.icon-badge{width:42px;height:42px}.mock-window{min-height:auto}.question-grid{grid-template-columns:repeat(4,1fr)}.summary-score-card{grid-template-columns:1fr}.dashboard-header h1,.review-header h1,.section-heading h2,.about-section h2,.benefit-section h2{font-size:2rem;line-height:1}.hero-copy h1,.login-intro h1{font-size:3rem}.tag{max-width:100%;min-height:30px;font-size:.72rem;line-height:1.2}.question-grid button{min-height:42px}.donut-card{grid-template-columns:1fr}.donut{justify-self:center}}
