:root{--ink:#1c150e;--ink-soft:#4a3f33;--paper:#f7f1e6;--paper-deep:#efe6d5;--card:#fffdf8;--accent:#e8571f;--accent-deep:#b93d10;--pine:#1f4d3d;--pine-soft:#dcebe2;--danger:#a3261d;--danger-soft:#f7dcd9;--success:#1d6b45;--success-soft:#dcefe3;--line:#251c12;--line-soft:#cbbfa9;--font-display:"Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;--font-ui:"Avenir Next", Avenir, "Segoe UI", system-ui, sans-serif;--radius:4px;--space-1:.25rem;--space-2:.5rem;--space-3:1rem;--space-4:1.5rem;--space-5:2.5rem;--space-6:4.5rem}*,:before,:after{box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-ui);color:var(--ink);background:var(--paper);-webkit-font-smoothing:antialiased;margin:0;font-size:1rem;line-height:1.55}.demo-banner{justify-content:center;align-items:center;gap:var(--space-2) var(--space-3);color:#fffdf8;background:var(--pine);text-align:center;flex-wrap:wrap;padding:.7rem 1rem;font-size:.9rem;display:flex}.demo-banner[hidden]{display:none}.demo-banner strong{letter-spacing:.02em}.public-demo-account{max-width:48rem;margin-inline:auto}img,video{max-width:100%;display:block}h1,h2,h3{font-family:var(--font-display);margin:0 0 var(--space-3);letter-spacing:-.01em;font-weight:600;line-height:1.12}h1{font-size:clamp(2.2rem,6vw,4.2rem)}h2{font-size:clamp(1.6rem,3.4vw,2.4rem)}h3{font-size:1.2rem}p{margin:0 0 var(--space-3)}a{color:var(--accent-deep);text-underline-offset:3px}a:hover{color:var(--accent)}:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:2px}.skip-link{z-index:100;background:var(--ink);color:var(--paper);padding:var(--space-2) var(--space-3);position:absolute;top:0;left:-9999px}.skip-link:focus{left:var(--space-3);top:var(--space-3);color:var(--paper)}.shell{width:min(1120px,100% - 2.5rem);margin-inline:auto}.site-header{border-bottom:1px solid var(--line);background:var(--paper);z-index:50;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:var(--space-3);padding:var(--space-3) 0;flex-wrap:wrap;display:flex}.brand{color:var(--ink);align-items:baseline;gap:.45rem;text-decoration:none;display:inline-flex}.brand-mark{font-family:var(--font-display);letter-spacing:-.02em;font-size:1.5rem;font-weight:700}.brand-mark:after{content:"";background:var(--accent);border-radius:50%;width:.55rem;height:.55rem;margin-left:.2rem;display:inline-block}.brand-sub{text-transform:uppercase;letter-spacing:.22em;color:var(--ink-soft);font-size:.8rem}.site-nav{align-items:center;gap:var(--space-3);flex-wrap:wrap;display:flex}.site-nav a{color:var(--ink);border-bottom:2px solid #0000;padding:.2rem 0;font-size:.95rem;text-decoration:none}.site-nav a:hover,.site-nav a[aria-current=page]{border-bottom-color:var(--accent)}.nav-cta{border:1px solid var(--line);border-radius:var(--radius);background:var(--ink);color:var(--paper)!important;padding:.35rem .9rem!important}.nav-cta:hover{background:var(--accent-deep);border-color:var(--accent-deep)}.nav-toggle{font:inherit;border:1px solid var(--line);border-radius:var(--radius);cursor:pointer;color:var(--ink);background:0 0;padding:.35rem .8rem;display:none}.section{padding:var(--space-6) 0}.section-alt{background:var(--paper-deep);border-block:1px solid var(--line-soft)}.section-kicker{text-transform:uppercase;letter-spacing:.2em;color:var(--accent-deep);margin-bottom:var(--space-2);font-size:.75rem;font-weight:700}.section-head{justify-content:space-between;align-items:end;gap:var(--space-3);margin-bottom:var(--space-4);flex-wrap:wrap;display:flex}.lede{max-width:46rem;color:var(--ink-soft);font-size:1.15rem}.hero{padding:clamp(3rem, 8vw, 6rem) 0 var(--space-6);gap:var(--space-5);grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);align-items:center;display:grid}.hero h1 em{color:var(--accent-deep);font-style:italic}.hero-actions{gap:var(--space-3);margin-top:var(--space-4);flex-wrap:wrap;display:flex}.hero-note{margin-top:var(--space-4);color:var(--ink-soft);font-size:.9rem}.hero-panel{border:1px solid var(--line);background:var(--card);border-radius:var(--radius);padding:var(--space-4)}.hero-panel h2{font-size:1.3rem}.hero-stat{justify-content:space-between;gap:var(--space-3);padding:var(--space-2) 0;border-bottom:1px dashed var(--line-soft);font-size:.95rem;display:flex}.hero-stat:last-child{border-bottom:0}.hero-stat strong{font-family:var(--font-display);font-size:1.25rem}.btn{font:inherit;border-radius:var(--radius);border:1px solid var(--line);background:var(--card);color:var(--ink);cursor:pointer;justify-content:center;align-items:center;gap:.4rem;padding:.6rem 1.2rem;font-size:.95rem;font-weight:600;text-decoration:none;display:inline-flex}.btn:hover{color:var(--ink);background:var(--paper-deep)}.btn-primary{background:var(--accent);border-color:var(--accent-deep);color:var(--ink)}.btn-primary:hover{background:var(--accent-deep);color:#fff}.btn-ghost{background:0 0}.upload-picker{position:relative;overflow:hidden}.upload-picker__input{opacity:0;cursor:pointer;width:100%;height:100%;position:absolute;inset:0}.upload-picker[aria-disabled=true] .upload-picker__input{cursor:not-allowed}.upload-picker:focus-within{outline:3px solid var(--ink);outline-offset:3px}.btn:disabled,.btn[aria-disabled=true]{opacity:.45;cursor:not-allowed;pointer-events:none}.btn-row{gap:var(--space-2);flex-wrap:wrap;display:flex}.course-grid{gap:var(--space-4);grid-template-columns:repeat(auto-fill,minmax(265px,1fr));margin:0;padding:0;list-style:none;display:grid}.course-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);flex-direction:column;transition:transform .16s;display:flex;overflow:hidden}.course-card:hover{transform:translateY(-3px)}.course-cover{aspect-ratio:16/9;background:linear-gradient(135deg, var(--c1,#333), var(--c2,#777));color:#fff;font-family:var(--font-display);border-bottom:1px solid var(--line);place-items:center;font-size:3.4rem;font-weight:700;display:grid;position:relative}.course-cover .chip-level{z-index:1;position:absolute;top:.7rem;left:.7rem}.course-cover-image{object-fit:cover;width:100%;height:100%;position:absolute;inset:0}.course-body{padding:var(--space-3);gap:var(--space-2);flex-direction:column;flex:1;display:flex}.course-subject{text-transform:uppercase;letter-spacing:.16em;color:var(--accent-deep);font-size:.72rem;font-weight:700}.course-title{font-family:var(--font-display);margin:0;font-size:1.25rem;line-height:1.2}.course-title a{color:var(--ink);text-decoration:none}.course-title a:hover{color:var(--accent-deep);text-decoration:underline}.course-meta{color:var(--ink-soft);flex-wrap:wrap;gap:.35rem .9rem;margin-top:auto;font-size:.85rem;display:flex}.chip-level{text-transform:uppercase;letter-spacing:.08em;color:#fff;background:#1c150e59;border:1px solid #ffffffd9;border-radius:999px;padding:.1rem .65rem;font-size:.72rem;font-weight:700;display:inline-block}.filter-bar{gap:var(--space-3);margin-bottom:var(--space-4);grid-template-columns:minmax(0,2fr) minmax(0,1fr) minmax(0,1fr);display:grid}.field{flex-direction:column;gap:.3rem;display:flex}.field label{text-transform:uppercase;letter-spacing:.1em;color:var(--ink-soft);font-size:.8rem;font-weight:700}.field input,.field select,.field textarea{font:inherit;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);color:var(--ink);width:100%;padding:.55rem .7rem}.field textarea{resize:vertical;min-height:6rem}.field-hint{color:var(--ink-soft);font-size:.8rem}.field-error{color:var(--danger);font-size:.85rem;font-weight:600}.results-meta{margin-bottom:var(--space-3);color:var(--ink-soft);font-size:.95rem}.state-panel{border:1px dashed var(--line-soft);border-radius:var(--radius);padding:var(--space-5) var(--space-4);text-align:center;background:var(--card)}.state-panel h3{margin-bottom:var(--space-2)}.state-panel.is-error{border-color:var(--danger);background:var(--danger-soft)}.state-panel.is-success{border-color:var(--success);background:var(--success-soft)}.skeleton-grid{gap:var(--space-4);grid-template-columns:repeat(auto-fill,minmax(265px,1fr));display:grid}.skeleton-card{border:1px solid var(--line-soft);border-radius:var(--radius);background:var(--card);overflow:hidden}.skeleton-cover{aspect-ratio:16/9;background:var(--paper-deep)}.skeleton-lines{padding:var(--space-3);gap:.6rem;display:grid}.skeleton-line{background:var(--paper-deep);border-radius:2px;height:.85rem}.skeleton-line.short{width:55%}.shimmer{animation:1.2s ease-in-out infinite alternate shimmer}@keyframes shimmer{0%{opacity:.5}to{opacity:1}}.course-detail{gap:var(--space-5);padding:var(--space-5) 0 var(--space-6);grid-template-columns:minmax(0,1fr) minmax(0,2fr);display:grid}.detail-aside{border:1px solid var(--line);background:var(--card);border-radius:var(--radius);padding:var(--space-4);align-self:start;position:sticky;top:6rem}.detail-aside .course-cover{margin:calc(var(--space-4) * -1) calc(var(--space-4) * -1) var(--space-3);border-radius:0}.detail-meta{margin:0 0 var(--space-3);padding:0;list-style:none}.detail-meta li{justify-content:space-between;gap:var(--space-2);border-bottom:1px dashed var(--line-soft);padding:.45rem 0;font-size:.92rem;display:flex}.syllabus{gap:var(--space-4);margin:0;padding:0;list-style:none;display:grid}.module{border:1px solid var(--line-soft);border-radius:var(--radius);background:var(--card)}.module h3{padding:var(--space-3);border-bottom:1px solid var(--line-soft);background:var(--paper-deep);margin:0;font-size:1.05rem}.lesson-row{justify-content:space-between;align-items:baseline;gap:var(--space-3);padding:var(--space-2) var(--space-3);border-bottom:1px dashed var(--line-soft);font-size:.95rem;display:flex}.lesson-row:last-child{border-bottom:0}.lesson-kind{text-transform:uppercase;letter-spacing:.12em;color:var(--ink-soft);font-size:.72rem}.free-tag{color:var(--success);font-weight:700}.accounts-layout{gap:var(--space-5);padding:var(--space-5) 0 var(--space-6);grid-template-columns:minmax(0,1fr) minmax(0,1fr);display:grid}.panel{border:1px solid var(--line);background:var(--card);border-radius:var(--radius);padding:var(--space-4)}.tab-row{gap:var(--space-2);margin-bottom:var(--space-4);display:flex}.tab-row .btn[aria-selected=true]{background:var(--ink);color:var(--paper)}.form-grid{gap:var(--space-3);display:grid}.radio-row{gap:var(--space-3);flex-wrap:wrap;display:flex}.radio-card{border:1px solid var(--line-soft);border-radius:var(--radius);padding:var(--space-2) var(--space-3);cursor:pointer;background:var(--paper);flex:12rem;align-items:flex-start;gap:.5rem;display:flex}.radio-card:has(input:checked){border-color:var(--accent);background:#fff4ec}.radio-card small{color:var(--ink-soft);display:block}.studio-grid{gap:var(--space-4);padding:var(--space-4) 0 var(--space-6);grid-template-columns:minmax(0,3fr) minmax(0,2fr);align-items:start;display:grid}.attestation{border:1px solid var(--pine);background:var(--pine-soft);border-radius:var(--radius);padding:var(--space-3);margin:var(--space-3) 0;align-items:flex-start;gap:.6rem;display:flex}.attestation input{width:1.1rem;height:1.1rem;accent-color:var(--pine);flex-shrink:0;margin-top:.25rem}.attestation label{font-size:.92rem}.upload-queue{margin:var(--space-3) 0 0;gap:var(--space-2);padding:0;list-style:none;display:grid}.upload-lesson-select{max-width:32rem}.upload-list-heading{margin:var(--space-3) 0 0;font-size:1rem}.upload-item{border:1px solid var(--line-soft);border-radius:var(--radius);padding:var(--space-2) var(--space-3);background:var(--paper);gap:.4rem;display:grid}.upload-head{justify-content:space-between;gap:var(--space-2);flex-wrap:wrap;align-items:baseline;font-size:.9rem;display:flex}.upload-name{word-break:break-all;font-weight:600}.upload-status{text-transform:uppercase;letter-spacing:.1em;font-size:.75rem;font-weight:700}.upload-status.is-ready{color:var(--success)}.upload-status.is-uploading{color:var(--accent-deep)}.upload-status.is-error{color:var(--danger)}.progress-track{background:var(--paper-deep);border:1px solid var(--line-soft);border-radius:999px;height:.55rem;overflow:hidden}.progress-fill{background:var(--accent);width:0%;height:100%;transition:width .2s}.upload-error{color:var(--danger);margin:0;font-size:.85rem}.module-editor{border:1px solid var(--line-soft);border-radius:var(--radius);padding:var(--space-3);margin-bottom:var(--space-3);background:var(--paper)}.module-editor h4{margin:0 0 var(--space-2);font-family:var(--font-display)}.lesson-editor-row{gap:var(--space-2);border-bottom:1px dashed var(--line-soft);flex-wrap:wrap;align-items:center;padding:.35rem 0;font-size:.9rem;display:flex}.lesson-editor-row:last-child{border-bottom:0}.player-layout{gap:var(--space-4);padding:var(--space-4) 0 var(--space-6);grid-template-columns:minmax(0,2fr) minmax(0,1fr);align-items:start;display:grid}.player-stage{border:1px solid var(--line);border-radius:var(--radius);background:var(--ink);color:var(--paper);aspect-ratio:16/9;text-align:center;padding:var(--space-4);place-items:center;display:grid}.player-stage p{color:#d9cfc0;max-width:30rem;font-size:.92rem}.player-stage.has-video{background:#111;padding:0;overflow:hidden}.lesson-video{aspect-ratio:16/9;object-fit:contain;background:#111;width:100%;height:100%;display:block}.play-glyph{border:2px solid var(--paper);width:4rem;height:4rem;margin:0 auto var(--space-3);border-radius:50%;place-items:center;font-size:1.4rem;display:grid}.lesson-list{border:1px solid var(--line-soft);border-radius:var(--radius);background:var(--card);margin:0;padding:0;list-style:none;overflow:hidden}.lesson-list button{justify-content:space-between;gap:var(--space-2);text-align:left;width:100%;font:inherit;border:0;border-bottom:1px dashed var(--line-soft);padding:var(--space-2) var(--space-3);cursor:pointer;color:var(--ink);background:0 0;align-items:baseline;font-size:.92rem;display:flex}.lesson-list li:last-child button{border-bottom:0}.lesson-list button:hover,.lesson-list button[aria-current=true]{background:var(--paper-deep)}.lesson-done{color:var(--success);font-size:.8rem;font-weight:700}.progress-summary{margin-top:var(--space-3);border:1px solid var(--line-soft);border-radius:var(--radius);padding:var(--space-3);background:var(--card)}.toast-region{right:var(--space-3);bottom:var(--space-3);z-index:90;gap:var(--space-2);width:min(24rem,100vw - 2rem);display:grid;position:fixed}.toast{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);padding:var(--space-2) var(--space-3);border-left-width:5px;font-size:.92rem;box-shadow:0 6px 18px #1c150e24}.toast.is-success{border-left-color:var(--success)}.toast.is-error{border-left-color:var(--danger)}.site-footer{border-top:1px solid var(--line);background:var(--ink);color:var(--paper);margin-top:auto}.footer-inner{padding:var(--space-4) 0}.footer-inner p{margin:0 0 var(--space-1)}.footer-note{color:#cbbfa9;font-size:.85rem}@media (max-width:860px){.hero,.course-detail,.accounts-layout,.studio-grid,.player-layout,.filter-bar{grid-template-columns:1fr}.detail-aside{position:static}.nav-toggle{display:inline-flex}.site-nav{border-top:1px solid var(--line-soft);width:100%;margin-top:var(--space-2);flex-direction:column;align-items:stretch;gap:0;display:none}.site-nav.is-open{display:flex}.site-nav a{padding:var(--space-2) 0;border-bottom:1px solid var(--line-soft)}.nav-cta{margin-top:var(--space-2);text-align:center;border-bottom:0!important}.section{padding:var(--space-5) 0}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}.course-card:hover{transform:none}}.platform-page>.panel{margin-block:1.4rem}.platform-columns{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;gap:2rem;margin-block:2rem;display:grid}.platform-columns>*{min-width:0}.platform-page .panel h2{font-size:clamp(1.25rem,2.4vw,1.8rem)}.platform-page .panel p{overflow-wrap:anywhere}.account-links,.management-nav{flex-wrap:wrap;align-items:center;gap:1.2rem;margin-block:1.5rem 2rem;display:flex}.account-links a{text-underline-offset:5px;font-weight:650}.narrow-panel{max-width:38rem}.order-card{justify-content:space-between;align-items:center;gap:1rem;margin-block:1rem;display:flex}.course-price{margin-block:.65rem;font-size:1.35rem;font-weight:750;display:block}.payment-status{color:#443c31;background:#f0ede7;border:1px solid;border-radius:2rem;padding:.3rem .65rem;font-size:.8rem;font-weight:650;display:inline-block}.payment-status.is-paid{color:#205b39;background:#e5f4ea}.payment-status.is-failed,.payment-status.is-expired{color:#8d2c24;background:#fff0ee}.payment-qr{background:#fff;width:min(100%,19rem);height:auto;margin:1.5rem auto;padding:1rem;display:block}.payment-panel{text-align:center}.payment-panel .btn-row{justify-content:center}.checkbox-row{line-height:1.7;display:block}.checkbox-row input{width:auto;min-height:auto;margin-right:.35rem}.legal-copy{white-space:pre-wrap}.user-row{border-bottom:1px solid var(--line);grid-template-columns:minmax(10rem,2fr) minmax(8rem,1fr) minmax(8rem,1fr) auto;align-items:end;gap:1rem;padding-block:1.5rem;display:grid}.price-row{border-bottom:1px solid var(--line);grid-template-columns:minmax(10rem,1fr) minmax(8rem,12rem) auto;align-items:end;gap:1rem;padding-block:1rem;display:grid}.user-row .field,.price-row .field{margin:0}.certificate{text-align:center;border:2px solid var(--ink);max-width:52rem;padding:clamp(1.5rem,5vw,4rem)}.platform-page textarea{resize:vertical;width:100%}.site-footer a{color:inherit;text-underline-offset:3px}[hidden]{display:none!important}@media (max-width:760px){.platform-columns{grid-template-columns:1fr;gap:1rem}.user-row,.price-row{grid-template-columns:1fr;align-items:stretch}.order-card{flex-direction:column;align-items:flex-start}.platform-page .btn-row{flex-direction:column;align-items:stretch}.account-links{gap:.8rem 1.2rem}}.player-stage.is-reading{background:var(--paper);min-height:0;color:var(--ink);border:1px solid var(--line);text-align:left;padding:clamp(1.2rem,3vw,2.5rem);display:block}.reading-content{overflow-wrap:anywhere;max-width:48rem;margin-inline:auto;line-height:1.85}.reading-content p{white-space:pre-wrap}.reading-content h2{color:var(--ink)}.reading-editor{grid-column:1/-1;width:100%}.reading-editor textarea{resize:vertical;width:100%;min-height:12rem}.lesson-editor-row{flex-wrap:wrap}.player-stage.is-reading p{color:var(--ink);max-width:none}.player-stage.is-reading{aspect-ratio:auto}