/*! tailwindcss v4.2.1 | MIT License | https://tailwindcss.com */
@layer theme{:root,:host{--font-sans:ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--font-mono:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;--spacing:.25rem;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:var(--default-mono-font-family,ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring{outline:auto}progress{vertical-align:baseline}summary{display:list-item}ol,ul,menu{list-style:none}img,svg,video,canvas,audio,iframe,embed,object{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,select,optgroup,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab, red, red)){::placeholder{color:color-mix(in oklab, currentcolor 50%, transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit{padding-block:0}::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-day-field{padding-block:0}::-webkit-datetime-edit-hour-field{padding-block:0}::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-millisecond-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button{height:auto}::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.invisible{visibility:hidden}.visible{visibility:visible}.relative{position:relative}.start{inset-inline-start:var(--spacing)}.table{display:table}.antialiased{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}}:root{--ink:#252b2f;--ivory:#f6f1e7;--paper:#fffaf0;--sepia:#8b5c37;--gold:#c09a58;--blue:#385b67;--muted:#77746d;--line:#d8ccb8}*{box-sizing:border-box}html,body{background:var(--ink);min-height:100%;color:var(--ink);margin:0}body{font-family:Arial,Helvetica,sans-serif}button,select{font:inherit}button{cursor:pointer}.app-shell{background:radial-gradient(circle at 16% 10%, #465057 0, var(--ink) 34%, #171c1f 100%);flex-direction:column;min-height:100vh;padding:20px 28px 12px;display:flex}.topbar{color:#fff8ea;justify-content:space-between;align-items:center;width:100%;max-width:1500px;margin:0 auto 18px;display:flex}.brand{align-items:center;gap:12px;display:flex}.brand-mark{border:1px solid var(--gold);width:42px;height:42px;color:var(--gold);place-items:center;font:700 24px Georgia,serif;display:grid}.brand strong{font:700 20px Georgia,serif;display:block}.brand small{color:#c9c4b9;text-transform:uppercase;letter-spacing:.11em;margin-top:3px;font-size:12px;display:block}.top-actions{align-items:end;gap:10px;display:flex}.select-label{color:#c9c4b9;text-transform:uppercase;letter-spacing:.14em;font-size:10px}select{color:#fff;background:#30383d;border:1px solid #697277;border-radius:7px;max-width:340px;margin-top:5px;padding:9px 34px 9px 12px;display:block}.icon-button{color:#fff;background:#30383d;border:1px solid #697277;border-radius:7px;width:42px;height:42px;font-size:21px}.lesson{flex:1;grid-template-columns:minmax(0,1.38fr) minmax(380px,.82fr);gap:20px;width:100%;max-width:1500px;min-height:0;margin:auto;display:grid}.art-column,.teaching-card{min-height:0}.art-frame{background:#111;border-radius:4px;height:calc(100vh - 205px);min-height:480px;position:relative;overflow:hidden;box-shadow:0 18px 55px #0008}.artwork{object-fit:contain;width:100%;height:100%;transition:transform .45s,object-position .45s;display:block}.artwork.detail-mode{object-fit:cover;transform:scale(2.15)}.counter{color:#fff;border-left:3px solid var(--gold);letter-spacing:.12em;background:#171c1ed9;padding:8px 11px;font-size:12px;font-weight:700;position:absolute;top:18px;left:18px}.detail-button{color:#fff;background:#171c1edb;border:1px solid #ffffff80;border-radius:999px;padding:10px 15px;position:absolute;bottom:16px;right:16px}.detail-button.active{background:var(--gold);color:var(--ink);border-color:var(--gold)}.caption{color:#fff8ea;min-height:62px;padding:11px 4px 0}.caption h2{margin:0;font:700 16px Georgia,serif}.caption p{color:#bcb7ae;margin:4px 0 0;font-size:12px}.focus{color:var(--gold);margin-top:5px;font-size:12px;display:inline-block}.teaching-card{background:var(--ivory);border-radius:4px;padding:clamp(24px,3vw,46px);overflow:auto;box-shadow:0 18px 55px #0006}.eyebrow{color:var(--sepia);text-transform:uppercase;letter-spacing:.18em;margin:0 0 12px;font-size:11px;font-weight:700}h1{margin:0 0 24px;font:700 clamp(31px,3.2vw,52px)/1.03 Georgia,serif}.question-box{border-left:4px solid var(--gold);background:#eee3cf;padding:16px 20px}.question-box span{color:var(--sepia);text-transform:uppercase;letter-spacing:.16em;font-size:10px;font-weight:700}.question-box p{margin:7px 0 0;font:700 clamp(18px,1.55vw,25px)/1.32 Georgia,serif}.reveal-zone{text-align:center;color:var(--muted);padding:38px 10px 10px;line-height:1.55}.primary{background:var(--blue);color:#fff;border:0;border-radius:2px;margin-top:11px;padding:14px 20px;font-weight:700;box-shadow:0 7px 18px #385b6740}.explanation{animation:.3s both rise}.explanation section{border-bottom:1px solid var(--line);padding:19px 0 16px}.explanation h3{color:var(--sepia);text-transform:uppercase;letter-spacing:.15em;margin:0 0 7px;font-size:11px}.explanation p{margin:0;font-size:15px;line-height:1.55}.explanation aside{color:#294852;background:#e4ebeb;gap:10px;margin-top:17px;padding:13px 15px;font-size:13px;line-height:1.4;display:flex}.explanation a{color:var(--sepia);margin-top:17px;font-size:12px;display:inline-block}.text-button{float:right;color:var(--muted);background:0 0;border:0;margin-top:12px;font-size:12px;text-decoration:underline}.navigation{grid-template-columns:145px 1fr 145px;align-items:center;gap:18px;width:100%;max-width:1500px;margin:13px auto 0;display:grid}.navigation button{color:#fff8ea;background:0 0;border:0;padding:8px;font-weight:700}.navigation button:last-child{text-align:right}.progress{background:#60676a;height:3px;overflow:hidden}.progress i{background:var(--gold);height:100%;transition:width .3s;display:block}.shortcuts{color:#8f9698;text-align:center;margin:5px 0 0;font-size:10px}@keyframes rise{0%{opacity:0;transform:translateY(8px)}}@media (width<=900px){.app-shell{padding:14px}.brand small,.shortcuts{display:none}.brand strong{font-size:16px}.select-label{display:none}.lesson{grid-template-columns:1fr}.art-frame{height:55vh;min-height:340px}.teaching-card{overflow:visible}.navigation{background:#20272be8;grid-template-columns:55px 1fr 55px;padding:8px;position:sticky;bottom:0}.navigation button span{display:none}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition:none!important;animation:none!important}}