/* Art direction: lastivka.org — deep navy, warm sand, flag yellow + blue, Syne / Syne Mono, risograph pop-art */
@font-face{font-family:'Syne';font-style:normal;font-weight:400 800;font-display:swap;src:url(../assets/fonts/syne-latin-wght-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Syne';font-style:normal;font-weight:400 800;font-display:swap;src:url(../assets/fonts/syne-latin-ext-wght-normal.woff2) format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Syne Mono';font-style:normal;font-weight:400;font-display:swap;src:url(../assets/fonts/syne-mono-latin-400-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Syne Mono';font-style:normal;font-weight:400;font-display:swap;src:url(../assets/fonts/syne-mono-latin-ext-400-normal.woff2) format('woff2');unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
:root{--navy:#131146;--blue:#0d5fc7;--sky:#1887f7;--sand:#bcb58f;--cream:#bcb58f;--paper:#fbf9ef;--gold:#f7d722;--rust:#7a3b00;--ink:#131146;--mute:#4b4a6b;--line:#cfc8a6;--ok:#1f6b3a;--bad:#a02a1c;--pink:#e6197f;
--head:'Syne','Helvetica Neue',Arial,system-ui,sans-serif;--mono:'Syne Mono','SFMono-Regular',Menlo,Consolas,monospace;--serif:var(--head);--sans:var(--head)}
*{box-sizing:border-box;margin:0;padding:0}
body{font:400 17px/1.6 var(--head);color:var(--ink);background:var(--sand);min-height:100dvh}
header{background:var(--sand);color:var(--navy);position:sticky;top:0;z-index:5;border-bottom:2px solid var(--navy)}
.bar{max-width:820px;margin:auto;display:flex;align-items:center;gap:12px;padding:8px 16px}
.bar b{font:800 17px var(--head);letter-spacing:.14em;text-transform:uppercase}.bar small{display:block;font:400 12px var(--mono);letter-spacing:.08em}
.bar button{margin-left:auto;background:var(--navy);border:0;color:#fff;border-radius:300px;padding:8px 18px;font:400 14px var(--mono);min-height:44px;cursor:pointer}
.prog{height:5px;background:#13114622}.prog i{display:block;height:100%;width:0;background:var(--navy);transition:width .4s}
nav{max-width:820px;margin:auto;display:none;padding:8px 16px 14px}nav.open{display:grid;gap:6px}
nav button{background:#13114612;color:var(--navy);border:1px solid #13114633;border-radius:300px;padding:10px 18px;text-align:left;font:400 14px var(--mono);min-height:44px;cursor:pointer}
nav button.on{background:var(--gold);border-color:var(--navy);font-weight:400;box-shadow:inset 0 0 0 1px var(--navy)}
main{max-width:820px;margin:auto;padding:24px 16px 72px}
h1{font:800 clamp(20px,5.6vw,50px)/1.08 var(--head);color:var(--navy);text-transform:uppercase;letter-spacing:-.035em}
h2{font:800 clamp(19px,5.2vw,28px)/1.1 var(--head);color:var(--navy);margin:30px 0 10px;text-transform:uppercase;letter-spacing:-.03em}
h3{font:700 17px var(--head);color:var(--navy);margin:16px 0 6px;text-transform:uppercase;letter-spacing:-.02em}
p{margin:10px 0;max-width:68ch}.lead{font:400 18px/1.5 var(--mono);color:var(--navy);letter-spacing:.02em}
.hero{background:var(--navy);color:#fff;margin:0 0 24px;border-radius:6px;overflow:hidden;position:relative}
.hero .hc{padding:28px 22px}.hero h1{color:#fff}.hero .lead{color:#fff}.hero .eyebrow{color:var(--gold)}
.hero.art{background:var(--navy) var(--img) var(--pos,50% 50%)/cover no-repeat;padding:min(34vw,170px) 14px 14px}
.hero.art .hc{background:rgba(251,249,239,.86);backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px);border-radius:4px;padding:18px 20px}
.hero.art h1{color:var(--navy)}.hero.art .lead{color:var(--navy)}.hero.art .eyebrow{color:var(--blue)}
.eyebrow{font:400 12px var(--mono);letter-spacing:.18em;text-transform:uppercase;margin-bottom:6px}
.fig{margin:18px 0;border:2px solid var(--navy);background:var(--paper);border-radius:4px;overflow:hidden}
.fig img{display:block;width:100%;height:auto;max-height:520px;object-fit:cover}
.fig figcaption{font:400 13px var(--mono);padding:8px 12px;border-top:2px solid var(--navy);color:var(--navy)}
.fig.side{max-width:340px;margin-left:auto;margin-right:auto}
.card{background:var(--paper);border:2px solid var(--navy);border-radius:6px;padding:18px;margin:16px 0}
.tag{display:inline-block;font:400 12px var(--mono);letter-spacing:.12em;padding:3px 12px;border-radius:300px;background:var(--navy);color:#fff;margin-bottom:8px}
.tag.game{background:var(--gold);color:var(--navy);box-shadow:inset 0 0 0 1px var(--navy)}.tag.task{background:var(--sky);color:#fff}.tag.tip{background:var(--pink);color:#fff}
.note{background:var(--navy);color:#fff;border-radius:6px;padding:14px 16px;font:400 14px/1.55 var(--mono);margin:16px 0}.note b{color:var(--gold);font-weight:400}.note a{color:var(--gold)}
.goal{display:flex;gap:10px;align-items:flex-start;margin:6px 0}
button.btn,.opt{font:inherit;cursor:pointer}
.btn{background:var(--navy);color:#fff;border:2px solid var(--navy);border-radius:300px;padding:12px 24px;min-height:48px;font:400 16px var(--mono)}.btn:hover{background:#25227a}.btn:active{transform:scale(.98)}.btn.alt{background:var(--paper);color:var(--navy)}.btn.alt:hover{background:var(--gold)}
.opt{display:block;width:100%;text-align:left;background:#fff;border:2px solid var(--navy);border-radius:6px;padding:12px 14px;margin:8px 0;min-height:44px;color:var(--ink);font:400 16px var(--head)}
.opt:hover{background:var(--gold)}.opt.right{background:#d6efd9;border-color:var(--ok)}.opt.wrong{background:#f8d9d3;border-color:var(--bad)}
.fb{display:none;margin-top:8px;font:400 14px/1.5 var(--mono);color:var(--mute)}.fb.show{display:block}
textarea,input{font-family:var(--head)}
textarea{width:100%;font-size:16px;border:2px solid var(--navy);border-radius:6px;padding:12px;min-height:110px;background:#fff;color:var(--ink)}
textarea:focus,button:focus-visible,input:focus-visible,a:focus-visible{outline:3px solid var(--sky);outline-offset:2px}
table{width:100%;border-collapse:collapse;font-size:15px;margin:12px 0;background:var(--paper)}th{background:var(--navy);color:#fff;text-align:left;padding:8px;font:400 13px var(--mono);letter-spacing:.06em}td{padding:8px;border-bottom:1px solid var(--line);vertical-align:top}
.keep{color:var(--ok);font-weight:700}.rem{color:var(--bad);font-weight:700}
.row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.row .btn{flex:1}
.score{font:800 30px var(--head);color:var(--navy)}.meter{font:400 13px var(--mono);color:var(--mute)}.meter.ok{color:var(--ok)}.meter.bad{color:var(--bad)}
.quote{border-left:6px solid var(--navy);background:var(--gold);padding:8px 14px;font:400 17px/1.5 var(--mono);margin:14px 0}
.hl{background:var(--gold);border-radius:3px;padding:0 2px}
.swatch{display:flex;gap:6px;margin:10px 0}.swatch i{flex:1;height:10px;border-radius:5px}
.rate label{display:block;margin:12px 0 4px;font-weight:700}.rate .s{display:flex;gap:6px}.rate .s button{flex:1;min-height:44px;border:2px solid var(--navy);background:#fff;border-radius:300px;font:400 15px var(--mono);cursor:pointer}.rate .s button.on{background:var(--navy);color:#fff}
@media print{header,.row,nav,.ticker{display:none}}

#vw{position:fixed;z-index:50;right:16px;top:72px;width:min(440px,92vw);max-height:calc(100vh - 88px);display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);border-radius:10px;box-shadow:0 12px 32px rgba(26,60,94,.25);overflow:hidden}
#vw[hidden]{display:none}
.vwh{display:flex;align-items:center;gap:6px;padding:8px 10px;background:var(--navy);color:#fff;cursor:grab;touch-action:none;user-select:none}
.vwh span{flex:1;font-weight:600}
.vwh button{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.35);border-radius:6px;min-width:36px;min-height:36px;font-size:18px;line-height:1}
.vwbody{overflow:auto;padding:10px}
#vw.min .vwbody{display:none}
.vwstage{position:relative;height:min(46vh,380px);background:#20262e;border-radius:8px;overflow:hidden;touch-action:none;cursor:grab}
.vwstage img{position:absolute;left:0;top:0;transform-origin:0 0;max-width:none;user-select:none;-webkit-user-drag:none}
.vwtools{display:flex;gap:6px;align-items:center;margin:8px 0}
.vwtools button{min-width:44px;min-height:44px;border:1px solid var(--line);background:#fff;border-radius:8px;font-size:16px;color:var(--navy)}
.vwtools span{margin-left:auto;color:var(--mute);font-size:14px}
#vwcap{margin:6px 0;padding:8px;background:var(--cream);border-radius:8px;font-size:14px}
.vwnotes label{display:block;font-size:14px;font-weight:600;color:var(--navy);margin:8px 0 4px}
.vw3{display:flex;gap:6px}
.vwnotes input,.vwnotes textarea{width:100%;padding:8px;border:1px solid var(--line);border-radius:8px;font:inherit;font-size:16px;background:#fff}
.vwnotes button{margin-top:8px;min-height:44px;padding:0 14px;border:1px solid var(--navy);background:#fff;color:var(--navy);border-radius:8px}
@media(max-width:700px){#vw{left:0;right:0;top:auto;bottom:0;width:100%;max-height:68vh;border-radius:12px 12px 0 0}.vwh{cursor:default}.vwstage{height:30vh}}

.logo{height:42px;width:auto;max-width:120px;object-fit:contain;flex:none}
.ban{width:100%;height:auto;max-height:240px;object-fit:cover;border-radius:6px;margin:0 0 16px;display:block;border:2px solid var(--navy)}
.steps{display:flex;gap:8px;margin:0 0 12px}.steps i{flex:1;height:8px;border-radius:4px;background:#13114622}.steps i.on{background:var(--navy)}
.ticker{background:var(--gold);color:var(--navy);border-top:2px solid var(--navy);border-bottom:2px solid var(--navy);overflow:hidden;white-space:nowrap;font:400 16px var(--mono);padding:10px 0}
.ticker span{display:inline-block;padding-left:100%;animation:tick 38s linear infinite}
@keyframes tick{to{transform:translateX(-100%)}}
@media(prefers-reduced-motion:reduce){.ticker span{animation:none;padding-left:16px}}
.foot{background:var(--navy);color:#fff;display:flex;flex-direction:column;align-items:center;gap:12px;padding:28px 16px;font:400 13px/1.6 var(--mono);text-align:center}
.foot .fl{background:var(--paper);border-radius:6px;padding:10px 16px}.foot .fl img{display:block;width:min(300px,70vw);height:auto}
.foot a{color:var(--gold)}
h1,h2,h3{overflow-wrap:break-word}

.qhead{display:flex;align-items:baseline;justify-content:space-between;gap:12px;border:2px solid var(--navy);border-radius:6px;padding:14px 18px;color:var(--navy);margin:0 0 14px}
.qhead span{font:400 13px var(--mono);letter-spacing:.18em}.qhead b{font:800 clamp(40px,12vw,64px)/1 var(--head);letter-spacing:-.04em}.qhead small{font:400 18px var(--mono);letter-spacing:0}
.qe a{color:var(--navy)}.qe{margin-bottom:10px}
.qtext{font-size:19px;line-height:1.4;margin-top:0}
.opt:disabled{cursor:default}.opt:disabled:not(.right):not(.wrong){opacity:.55}.opt:disabled:hover{background:#fff}.opt.right:hover{background:#d6efd9}
.btn:disabled{opacity:.4;cursor:not-allowed}

/* ---------- Lesson 1 slides + artist pages ---------- */
.slide{display:flex;flex-direction:column;min-height:calc(100dvh - 190px);padding-bottom:96px}
.st{font:800 clamp(24px,7vw,40px)/1.08 'Syne',sans-serif;margin:2px 0 8px;overflow-wrap:break-word}
.mini{font:400 14px/1.45 var(--mono);margin:6px 0 10px}
.slidenav{position:fixed;left:0;right:0;bottom:0;z-index:20;background:var(--paper);border-top:2px solid var(--navy);padding:8px 14px calc(8px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:6px;align-items:center}
.slidenav .row{margin:0;width:100%;max-width:720px}
.steps.sn{margin:0;width:100%;max-width:720px;gap:4px}.steps.sn i{height:6px}
.strip{height:clamp(90px,22vh,170px);background:var(--img) var(--pos)/cover;border:2px solid var(--navy);border-radius:4px;margin:6px 0 10px}
.steps3{display:grid;gap:8px;margin:14px 0}.steps3 div{border:2px solid var(--navy);border-radius:6px;padding:10px 14px;background:var(--gold)}.steps3 div:nth-child(2){background:var(--sky);color:#fff}.steps3 div:nth-child(3){background:#e6197f;color:#fff}
.steps3 b{display:block;font:800 20px Syne,sans-serif}.steps3 span{font:400 14px var(--mono)}
.row.tight{margin-top:6px}
.card.cq{padding:10px 14px}.cq .card{border:0;padding:0;margin:0}
.card.wv{margin:10px 0;padding:12px 14px}.card.wv p{margin:6px 0;font-size:14px;line-height:1.4}
.wvh{display:flex;justify-content:space-between;align-items:baseline;gap:8px}.wvh b{font:800 18px Syne,sans-serif}.wvh span{font:400 12px var(--mono)}
.lb{display:inline-block;min-width:78px;font:400 11px var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--mute)}
.said{font-style:italic}
a.prof,.tl a{color:var(--navy);font:400 13px var(--mono);font-weight:700;text-decoration:underline;text-underline-offset:3px}
.card.sl{padding:10px 14px;margin:8px 0}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0}.chips button{border:2px solid var(--navy);background:var(--paper);border-radius:300px;padding:8px 16px;font:400 14px var(--mono);min-height:40px}.chips button.on{background:var(--navy);color:#fff}
.tl{border-left:4px solid var(--navy);margin:12px 0 12px 6px}.tl div{padding:6px 0 10px 16px;position:relative}.tl div:before{content:'';position:absolute;left:-10px;top:12px;width:16px;height:16px;border-radius:50%;background:var(--gold);border:2px solid var(--navy)}.tl .now:before{background:#e6197f}
.tl b{display:block;font:800 18px Syne,sans-serif}.tl span{font:400 14px/1.4 var(--mono)}
.card.big{font:400 18px/1.4 var(--mono);background:var(--gold)}
.trio{display:grid;gap:8px}.trio div{border:2px solid var(--navy);border-radius:6px;padding:10px 14px;background:var(--paper)}.trio b{display:block;font:800 16px Syne,sans-serif}.trio span{font:400 14px/1.4 var(--mono)}
.pq{font:400 16px/1.5 var(--mono)}#pta{width:100%;font:400 16px/1.4 var(--mono);border:2px solid var(--navy);border-radius:6px;padding:10px;background:#fff}
.slide .quote{font-size:15px}
.ahead{border:2px solid var(--navy);border-radius:6px;padding:16px 18px;margin:6px 0 12px}.ahead span{font:400 12px var(--mono);letter-spacing:.14em;text-transform:uppercase}.ahead h1{margin:4px 0;color:var(--navy)}.ahead b{font:800 22px Syne,sans-serif}
.facts{display:grid;grid-template-columns:1fr;gap:6px;margin:8px 0}.facts div{border:2px solid var(--navy);border-radius:6px;padding:8px 12px;font:400 14px var(--mono);background:var(--paper)}.facts span{display:block;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--mute)}
@media(min-width:700px){.facts{grid-template-columns:repeat(3,1fr)}.steps3{grid-template-columns:repeat(3,1fr)}.trio{grid-template-columns:repeat(3,1fr)}}
.kw{margin:6px 0 0;padding-left:20px;font:400 14px/1.5 var(--mono)}.links a{font-weight:700}
.agrid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:12px 0}.acard{border:2px solid var(--navy);border-radius:6px;padding:12px;text-align:left;color:var(--navy);display:flex;flex-direction:column;gap:3px;min-height:92px}.acard b{font:800 17px Syne,sans-serif}.acard span{font:400 13px var(--mono)}.acard small{font:400 11px var(--mono)}
@media(min-width:700px){.agrid{grid-template-columns:repeat(3,1fr)}}
#nav .navart{border-top:2px solid var(--navy);font-weight:700}
.lb{min-width:96px}
.wvh small{font:400 12px var(--mono)}
.wvh{align-items:center}
.card.wv{padding:10px 12px}.card.wv p{margin:3px 0;font-size:13px;line-height:1.35}
.slide .lead{margin:6px 0}
.slr{display:flex;gap:8px;align-items:center;margin-top:6px}.slr .chips{margin:0;gap:6px}.slr .chips button{padding:6px 12px;min-height:40px}
.btn.sm{padding:6px 14px;min-height:40px;font-size:14px;flex:none}
.card.sl{padding:8px 12px;margin:6px 0}
.slide .meter{margin:4px 0}
@media(max-height:780px){.strip{display:none}.st{font-size:22px}.tl span,.trio span,.steps3 span{font-size:13px}.tl div{padding:3px 0 6px 16px}.card.big{font-size:16px}}
.links a{color:var(--navy)}

/* ---------- lib: intro / recap / bridge ---------- */
.slide.intro .lintro{display:flex;gap:14px;align-items:center;background:var(--c);border:2px solid var(--navy);border-radius:8px;padding:18px;margin:6px 0 12px}
.lnum{font:800 clamp(72px,24vw,110px)/0.9 Syne,sans-serif;color:inherit;flex:none}
.lof{font:400 12px var(--mono);letter-spacing:.18em}
.lintro .st{margin:4px 0 0;color:inherit}
.goal{display:flex;gap:8px;font:400 14px/1.4 var(--mono);margin:6px 0}
.done{display:flex;gap:12px;align-items:center;background:var(--c);border:2px solid var(--navy);border-radius:8px;padding:14px 16px;margin:4px 0 10px}
.done span{font:800 34px Syne,sans-serif;background:var(--navy);color:var(--c);width:52px;height:52px;border-radius:50%;display:grid;place-items:center;flex:none}
.done b{display:block;font:800 clamp(20px,6vw,28px)/1.1 Syne,sans-serif;color:var(--navy)}.done small{font:400 13px var(--mono);color:var(--navy)}
.got{margin:6px 0 0;padding:0;list-style:none}.got li{font:400 14px/1.4 var(--mono);padding:4px 0 4px 26px;position:relative}.got li:before{content:'✓';position:absolute;left:0;font-weight:700;color:var(--blue,#1887f7)}
.card.recap{margin:8px 0;padding:12px 14px}
.saved{font:400 13px var(--mono);margin:4px 0}.saved a{color:var(--navy);font-weight:700}
.bridge{margin-top:10px;border:2px dashed var(--navy);border-radius:8px;padding:12px 14px;background:var(--c);display:flex;flex-direction:column;gap:2px}
.bridge .bt{font:400 11px var(--mono);letter-spacing:.16em}.bridge b{font:800 20px Syne,sans-serif}.bridge span:last-child{font:400 13px/1.4 var(--mono)}
.btn.warn{background:#e6197f;color:#fff;border-color:#e6197f}
.lintro .st{font:800 clamp(20px,6.4vw,30px)/1.05 Syne,sans-serif;overflow-wrap:break-word;min-width:0}
.lintro>div:last-child{min-width:0}
@media(max-height:780px){.done{padding:8px 12px;margin:2px 0 6px}.done span{width:40px;height:40px;font-size:26px}.card.recap{padding:8px 12px}.got li{padding:2px 0 2px 24px;font-size:13px}.bridge{padding:8px 12px;margin-top:6px}.slide .row.tight{margin-top:4px}}
.lintro .st{font-size:clamp(16px,5.4vw,26px);overflow-wrap:normal;hyphens:none}

/* ---------- artwork decoration + quiz auto-advance ---------- */
.deco{flex:1 1 0;min-height:0;max-height:380px;margin-top:14px;border:2px solid var(--navy);border-radius:8px;background-size:cover;background-repeat:no-repeat;box-shadow:5px 5px 0 var(--navy)}
.slide.recappg .deco,.slide.intro .deco{max-height:240px}
.qdeco{height:clamp(60px,12vh,130px);margin:14px 0 0;border:2px solid var(--navy);border-radius:8px;background:center/cover no-repeat;box-shadow:5px 5px 0 var(--navy)}
.qauto{height:6px;background:#13114622;border-radius:3px;overflow:hidden;margin-top:10px}.qauto i{display:block;height:100%;width:0;background:var(--navy);animation:qa 4s linear forwards}
@keyframes qa{to{width:100%}}
.qautot{margin:4px 0 0}
@media(prefers-reduced-motion:reduce){.qauto i{animation-duration:4s}}
.slide.ci .rate{margin:8px 0}
.slide .eyebrow{align-self:flex-start;background:var(--lc,#f7d722);color:var(--navy);border:2px solid var(--navy);border-radius:300px;padding:3px 12px;margin:2px 0 8px;box-shadow:2px 2px 0 var(--navy)}
.slide .st{text-shadow:3px 3px 0 var(--lc,#f7d722)}
.slide.intro .eyebrow,.slide.recappg .eyebrow{background:var(--paper)}
/* riso halftone accents */
.slide{position:relative;isolation:isolate;z-index:4;overflow-x:clip}
.slide::before,.slide::after{content:'';position:absolute;z-index:-1;pointer-events:none;border-radius:50%}
.slide::before{right:-70px;top:-20px;width:240px;height:240px;background:radial-gradient(circle,var(--lc,#f7d722) 2.6px,transparent 3px) 0 0/11px 11px;opacity:.85;-webkit-mask-image:radial-gradient(circle,#000 35%,transparent 70%);mask-image:radial-gradient(circle,#000 35%,transparent 70%)}
.slide::after{left:-80px;bottom:60px;width:220px;height:220px;background:radial-gradient(circle,var(--navy) 2px,transparent 2.4px) 0 0/11px 11px;opacity:.22;-webkit-mask-image:radial-gradient(circle,#000 30%,transparent 70%);mask-image:radial-gradient(circle,#000 30%,transparent 70%)}