:root{--paper: #f5f2ea;--paper-2: #eeebe2;--ink: #1a1813;--ink-soft: #403b31;--mute: #8c8576;--faint: #c6c0b2;--line: #d9d3c5;--char: #1c1a16;--char-2: #26241e;--node: #1a1813;--ok: #1a1813;--bad: #7a2f22;--r: 14px;--ease: cubic-bezier(.22, .61, .36, 1)}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{background:var(--paper);color:var(--ink);font-family:Be Vietnam Pro,system-ui,sans-serif;font-weight:400;-webkit-font-smoothing:antialiased;font-feature-settings:"ss01";line-height:1.5}.serif{font-family:Fraunces,Georgia,serif}a{color:inherit;text-decoration:none}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:0;opacity:.04;background-image:radial-gradient(var(--ink) .5px,transparent .6px);background-size:3px 3px}.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:18px;padding:14px 26px;background:color-mix(in srgb,var(--paper) 86%,transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:11px;letter-spacing:.02em}.brand .mark{font-family:Fraunces,serif;font-weight:600;font-size:20px;letter-spacing:.04em}.brand .node{width:5px;height:5px;border-radius:50%;background:var(--ink);display:inline-block}.brand .sub{font-size:13px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft)}.crumb{color:var(--mute);font-size:13px;border-left:1px solid var(--line);padding-left:18px}.crumb b{color:var(--ink-soft);font-weight:500}.top .spacer{flex:1}.navlinks{display:flex;gap:16px;font-size:13px;color:var(--mute)}.navlinks a.active,.navlinks a:hover{color:var(--ink)}.prog-mini{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--mute)}.prog-mini .bar{width:120px;height:3px;background:var(--line);border-radius:99px;overflow:hidden}.prog-mini .bar i{display:block;height:100%;background:var(--ink);width:0;transition:width .6s var(--ease)}.user{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--ink-soft)}.user .dot{width:26px;height:26px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;font-family:Fraunces,serif;font-size:13px;overflow:hidden}.user .dot img{width:100%;height:100%;object-fit:cover}.linkbtn{background:none;border:none;font:inherit;color:var(--mute);cursor:pointer;font-size:13px}.linkbtn:hover{color:var(--ink)}.wrap{position:relative;z-index:1;display:grid;grid-template-columns:332px 1fr;gap:0;min-height:calc(100vh - 59px)}.rail{border-right:1px solid var(--line);padding:30px 22px 60px}.stage{padding:34px 40px 80px;max-width:880px}.container{position:relative;z-index:1;max-width:1080px;margin:0 auto;padding:48px 32px 96px}.rail h2{font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--mute);font-weight:600;margin:0 0 22px 6px}.mod{margin-bottom:8px}.mod-h{display:flex;align-items:baseline;gap:9px;padding:0 6px 12px}.mod-h .idx{font-family:Fraunces,serif;font-size:13px;color:var(--mute)}.mod-h .t{font-family:Fraunces,serif;font-size:16.5px;font-weight:500}.mod-h .lk{margin-left:auto;font-size:11px;color:var(--faint);letter-spacing:.04em}.mod.locked .mod-h .t{color:var(--faint)}.lessons{list-style:none;margin:0 0 18px;padding:0 0 0 6px;position:relative}.spine{position:absolute;left:11px;top:6px;bottom:6px;width:1px;background:var(--line)}.lesson{position:relative;display:flex;gap:14px;align-items:flex-start;padding:9px 10px 9px 0;cursor:pointer;border-radius:10px;transition:background .25s var(--ease),opacity .4s var(--ease),transform .4s var(--ease)}.lesson:hover{background:color-mix(in srgb,var(--ink) 4%,transparent)}.lesson .node{position:relative;flex:0 0 22px;height:22px;z-index:2;display:grid;place-items:center}.lesson .node .ring{width:13px;height:13px;border-radius:50%;border:1.4px solid var(--ink);background:var(--paper);transition:all .45s var(--ease)}.lesson .node .check{position:absolute;width:7px;height:7px;opacity:0;transform:scale(.4);transition:all .35s var(--ease)}.lesson[data-type=quiz] .node .ring{transform:rotate(45deg);border-radius:3px}.lesson .meta{min-width:0;padding-top:1px}.lesson .ttl{font-size:14.5px;line-height:1.32;color:var(--ink);transition:color .3s}.lesson .sub{font-size:11.5px;color:var(--mute);margin-top:3px;letter-spacing:.02em;display:flex;gap:8px;align-items:center}.tag{font-size:10px;letter-spacing:.1em;text-transform:uppercase;border:1px solid var(--line);padding:2px 6px;border-radius:99px;color:var(--ink-soft)}.tag.gate{border-color:var(--ink);color:var(--ink)}.lesson.completed .node .ring{background:var(--ink);border-color:var(--ink)}.lesson.completed .node .check{opacity:1;transform:scale(1)}.lesson.completed .ttl{color:var(--ink-soft)}.lesson.locked{cursor:not-allowed;opacity:.42}.lesson.locked .node .ring{border-style:dashed;border-color:var(--faint)}.lesson.locked .ttl{color:var(--mute)}.lesson.active{background:color-mix(in srgb,var(--ink) 7%,transparent)}.lesson.active .ttl{font-weight:500}.lesson.active:before{content:"";position:absolute;left:-22px;top:10px;bottom:10px;width:2px;background:var(--ink);border-radius:9px}@keyframes ignite{0%{transform:scale(1)}40%{transform:scale(1.55)}to{transform:scale(1)}}.lesson.justUnlocked .node .ring{animation:ignite .6s var(--ease);border-style:solid;border-color:var(--ink)}.eyebrow{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--mute);font-weight:600}.stage h1{font-family:Fraunces,serif;font-weight:500;font-size:30px;line-height:1.12;margin:10px 0 22px;letter-spacing:-.01em}.player{position:relative;aspect-ratio:16/9;width:100%;border-radius:var(--r);overflow:hidden;background:radial-gradient(120% 120% at 70% 10%,var(--char-2),var(--char) 60%);border:1px solid #000;box-shadow:0 24px 60px -30px #000000b3}.player iframe{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;border:0}.player .center{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center}.play{width:74px;height:74px;border-radius:50%;border:1.5px solid rgba(255,255,255,.55);display:grid;place-items:center;cursor:pointer;transition:all .3s var(--ease);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.play:hover{border-color:#fff;transform:scale(1.06)}.play svg{margin-left:4px}.player .brandwm{position:absolute;left:18px;top:16px;display:flex;align-items:center;gap:8px;color:#ffffff80;font-size:12px;letter-spacing:.04em;z-index:3}.player .brandwm .node{width:4px;height:4px;border-radius:50%;background:#fff9}.drm{position:absolute;right:14px;bottom:13px;font-size:10px;letter-spacing:.06em;color:#ffffff6b;border:1px solid rgba(255,255,255,.18);padding:3px 8px;border-radius:99px;z-index:3}.wm{position:absolute;pointer-events:none;-webkit-user-select:none;user-select:none;font-size:12.5px;color:#ffffff4d;letter-spacing:.03em;white-space:nowrap;transition:left 1.4s var(--ease),top 1.4s var(--ease),opacity .8s ease;text-shadow:0 1px 2px rgba(0,0,0,.4);z-index:3}.scrub{position:absolute;left:0;right:0;bottom:0;height:3px;background:#ffffff1f;z-index:3}.scrub i{display:block;height:100%;width:0;background:#ffffffb3}.controls{display:flex;align-items:center;gap:14px;margin:20px 0 6px;flex-wrap:wrap}.btn{font:inherit;font-size:14px;border:1px solid var(--ink);background:var(--ink);color:var(--paper);padding:11px 20px;border-radius:99px;cursor:pointer;letter-spacing:.01em;transition:all .25s var(--ease);display:inline-flex;align-items:center;gap:9px}.btn:hover{transform:translateY(-1px)}.btn.ghost{background:transparent;color:var(--ink)}.btn.ghost:hover{background:color-mix(in srgb,var(--ink) 6%,transparent)}.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}.btn.sm{padding:8px 14px;font-size:13px}.hint{font-size:12.5px;color:var(--mute)}.quiz{margin-top:4px}.q{border:1px solid var(--line);border-radius:var(--r);padding:22px 24px;margin-bottom:16px;background:color-mix(in srgb,var(--paper) 60%,#fff)}.q .qh{display:flex;gap:12px;align-items:baseline;margin-bottom:14px}.q .qn{font-family:Fraunces,serif;color:var(--mute);font-size:14px}.q .qp{margin-left:auto;font-size:11px;color:var(--mute);letter-spacing:.04em}.q .qt{font-size:15.5px;line-height:1.45}.opts{display:flex;flex-direction:column;gap:9px;margin-top:14px}.opt{display:flex;gap:11px;align-items:flex-start;padding:11px 13px;border:1px solid var(--line);border-radius:10px;cursor:pointer;transition:all .2s var(--ease);font-size:14px}.opt:hover{border-color:var(--ink-soft)}.opt .box{flex:0 0 16px;height:16px;border:1.4px solid var(--ink-soft);border-radius:5px;margin-top:1px;display:grid;place-items:center;transition:all .2s}.opt[data-shape=radio] .box{border-radius:50%}.opt.sel .box{background:var(--ink);border-color:var(--ink)}.opt.sel .box:after{content:"";width:6px;height:6px;background:var(--paper);border-radius:1px}.opt[data-shape=radio].sel .box:after{border-radius:50%}.shorttext,.essaytext{width:100%;font:inherit;font-size:14px;padding:11px 13px;border:1px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink)}.essaytext{min-height:120px;resize:vertical;margin-top:14px}.shorttext:focus,.essaytext:focus{outline:none;border-color:var(--ink)}.q.graded{pointer-events:none}.q.correct{border-color:var(--ink)}.q.partial{border-color:var(--mute)}.q.wrong{border-color:color-mix(in srgb,var(--bad) 55%,var(--line))}.q.pending{border-color:var(--mute);border-style:dashed}.fb{margin-top:14px;font-size:13px;display:flex;gap:9px;align-items:flex-start;color:var(--ink-soft);border-top:1px dashed var(--line);padding-top:12px}.fb .badge{flex:0 0 auto;font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;padding:2px 8px;border-radius:99px;border:1px solid var(--ink-soft)}.fb.correct .badge{background:var(--ink);color:var(--paper);border-color:var(--ink)}.fb.wrong .badge{color:var(--bad);border-color:color-mix(in srgb,var(--bad) 60%,var(--line))}.opt.is-correct{border-color:var(--ink);background:color-mix(in srgb,var(--ink) 5%,transparent)}.opt.is-correct .box{background:var(--ink);border-color:var(--ink)}.opt.is-wrongpick{border-color:color-mix(in srgb,var(--bad) 50%,var(--line))}.result{display:flex;align-items:center;gap:18px;padding:20px 24px;border-radius:var(--r);margin:2px 0 22px;border:1px solid var(--ink);animation:rise .5s var(--ease)}.result.pass{background:var(--ink);color:var(--paper)}.result.fail{background:transparent;border-color:color-mix(in srgb,var(--bad) 60%,var(--line))}.result.pending{background:transparent;border-style:dashed}.result .score{font-family:Fraunces,serif;font-size:30px;line-height:1}.result .rt{font-size:14px}.result .rt b{font-weight:600}.result.fail .rt b{color:var(--bad)}.result .rspacer{flex:1}@keyframes rise{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}.locked-stage{display:grid;place-items:center;height:60vh;text-align:center;gap:12px;color:var(--mute)}.locked-stage .serif{font-size:22px;color:var(--ink-soft)}.footnote{margin-top:26px;font-size:11.5px;color:var(--faint);letter-spacing:.02em;border-top:1px solid var(--line);padding-top:14px}.center-screen{min-height:100vh;display:grid;place-items:center;padding:24px}.card{border:1px solid var(--line);border-radius:var(--r);background:color-mix(in srgb,var(--paper) 55%,#fff);padding:26px}.muted{color:var(--mute)}.page-h{font-family:Fraunces,serif;font-weight:500;font-size:32px;letter-spacing:-.01em;margin:0 0 6px}.section-eyebrow{font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--mute);font-weight:600}.grid-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;margin-top:28px}.course-card{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:color-mix(in srgb,var(--paper) 55%,#fff);transition:transform .3s var(--ease),box-shadow .3s var(--ease);cursor:pointer;display:flex;flex-direction:column}.course-card:hover{transform:translateY(-3px);box-shadow:0 18px 40px -28px #00000080}.course-card .cover{aspect-ratio:16/9;background:radial-gradient(120% 120% at 70% 10%,var(--char-2),var(--char) 60%);display:grid;place-items:center;color:#fff9;font-family:Fraunces,serif;font-size:22px}.course-card .body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1}.course-card .body h3{font-family:Fraunces,serif;font-weight:500;font-size:19px;margin:0}.course-card .price{margin-top:auto;font-weight:600;letter-spacing:.01em}.pill{display:inline-flex;align-items:center;gap:6px;font-size:11px;letter-spacing:.06em;text-transform:uppercase;border:1px solid var(--line);border-radius:99px;padding:3px 10px;color:var(--ink-soft)}.pill.ok{border-color:var(--ink);background:var(--ink);color:var(--paper)}.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}.field label{font-size:12px;letter-spacing:.04em;color:var(--mute)}.field input,.field textarea,.field select{font:inherit;font-size:14px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink)}.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--ink)}.row{display:flex;gap:14px;flex-wrap:wrap}.row>*{flex:1;min-width:160px}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:var(--ink);color:var(--paper);padding:12px 20px;border-radius:99px;font-size:13px;z-index:50;box-shadow:0 12px 30px -16px #0009;animation:rise .4s var(--ease)}.qr-box{display:flex;gap:26px;flex-wrap:wrap;align-items:flex-start}.qr-box img{width:240px;height:240px;border-radius:var(--r);border:1px solid var(--line);background:#fff}.kv{display:flex;justify-content:space-between;gap:18px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14px}.kv b{font-weight:600}.spin{width:26px;height:26px;border:2px solid var(--line);border-top-color:var(--ink);border-radius:50%;animation:rot .8s linear infinite}@keyframes rot{to{transform:rotate(360deg)}}.google-btn{display:inline-flex;align-items:center;gap:12px;font:inherit;font-size:15px;padding:13px 22px;border-radius:99px;border:1px solid var(--ink);background:var(--ink);color:var(--paper);cursor:pointer;transition:transform .2s var(--ease)}.google-btn:hover{transform:translateY(-1px)}.google-btn .g{width:20px;height:20px;border-radius:50%;background:#fff;display:grid;place-items:center;font-family:Fraunces,serif;color:var(--ink);font-weight:600}.admin-table{width:100%;border-collapse:collapse;margin-top:18px;font-size:14px}.admin-table th,.admin-table td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line)}.admin-table th{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--mute);font-weight:600}.editor-block{border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;margin-bottom:16px;background:color-mix(in srgb,var(--paper) 55%,#fff)}.editor-block .blk-h{display:flex;align-items:center;gap:10px;margin-bottom:12px}.editor-block .blk-h .t{font-family:Fraunces,serif;font-size:16px}.editor-block .blk-h .spacer{flex:1}.nested{border-left:2px solid var(--line);padding-left:16px;margin-left:4px}.cselect{position:relative;width:100%}.cselect-trigger{width:100%;display:flex;align-items:center;gap:10px;font:inherit;font-size:14px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink);cursor:pointer;text-align:left;transition:border-color .2s var(--ease)}.cselect-trigger:hover{border-color:var(--ink-soft)}.cselect.open .cselect-trigger{border-color:var(--ink)}.cselect.disabled .cselect-trigger{opacity:.5;cursor:not-allowed}.cselect-trigger .cs-label{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.cselect-trigger .cs-label.placeholder{color:var(--mute)}.cselect-trigger .cs-caret{flex:0 0 auto;color:var(--ink-soft);transition:transform .25s var(--ease)}.cselect.open .cs-caret{transform:rotate(180deg)}.cselect-panel{list-style:none;margin:0;padding:6px;position:absolute;z-index:30;left:0;right:0;top:calc(100% + 6px);background:color-mix(in srgb,var(--paper) 25%,#fff);border:1px solid var(--line);border-radius:12px;box-shadow:0 18px 44px -22px #00000080;max-height:280px;overflow:auto;animation:rise .16s var(--ease)}.cselect-opt{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:8px;cursor:pointer;font-size:14px;color:var(--ink);transition:background .15s var(--ease)}.cselect-opt.active{background:color-mix(in srgb,var(--ink) 7%,transparent)}.cselect-opt.selected{font-weight:500}.cselect-opt .cs-opt-label{flex:1}.cselect-opt .cs-check{flex:0 0 auto;color:var(--ink);opacity:0}.cselect-opt.selected .cs-check{opacity:1}.cselect-empty{padding:10px 12px;font-size:13px;color:var(--mute)}@media(max-width:860px){.wrap{grid-template-columns:1fr}.rail{border-right:none;border-bottom:1px solid var(--line)}}