@font-face{font-family:Plex;font-weight:400;font-display:swap;src:url(fonts/plex-400-ar.woff2) format('woff2');unicode-range:U+0600-06FF,U+0750-077F,U+0870-088E,U+0890-0891,U+0898-08E1,U+08E3-08FF,U+200C-200E,U+2010-2011,U+204F,U+2E41,U+FB50-FDFF,U+FE70-FE74,U+FE76-FEFC}
@font-face{font-family:Plex;font-weight:400;font-display:swap;src:url(fonts/plex-400-la.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Plex;font-weight:600;font-display:swap;src:url(fonts/plex-600-ar.woff2) format('woff2');unicode-range:U+0600-06FF,U+0750-077F,U+0870-088E,U+0890-0891,U+0898-08E1,U+08E3-08FF,U+200C-200E,U+2010-2011,U+204F,U+2E41,U+FB50-FDFF,U+FE70-FE74,U+FE76-FEFC}
@font-face{font-family:Plex;font-weight:600;font-display:swap;src:url(fonts/plex-600-la.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Kufi;font-weight:600 800;font-display:swap;src:url(fonts/kufi-ar.woff2) format('woff2');unicode-range:U+0600-06FF,U+0750-077F,U+0870-088E,U+0890-0891,U+0898-08E1,U+08E3-08FF,U+200C-200E,U+2010-2011,U+204F,U+2E41,U+FB50-FDFF,U+FE70-FE74,U+FE76-FEFC}
@font-face{font-family:Kufi;font-weight:600 800;font-display:swap;src:url(fonts/kufi-la.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
:root{--bg:#f4f0e8;--raise:#fbf9f5;--ink:#16181b;--ink2:#4c5158;--dim:#7a7e84;--line:#ddd5c6;
--line2:#c9bfad;--sign:#f2b705;--ok:#1b7a47;--bad:#c0391f;--cta:#16181b;--on-cta:#fbf9f5;--shot:#0f1011;
--sh:0 1px 0 rgba(22,24,27,.04),0 14px 30px -18px rgba(22,24,27,.35);color-scheme:light}
@media(prefers-color-scheme:dark){:root{--bg:#14130f;--raise:#1e1c17;--ink:#f0ebe0;--ink2:#bdb5a6;--dim:#8c8576;
--line:#2f2b24;--line2:#463f34;--sign:#f2c230;--ok:#4cbb7f;--bad:#ea6a50;--cta:#f0ebe0;--on-cta:#14130f;
--shot:#000;--sh:none;color-scheme:dark}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:12px}
@media(min-width:901px){html{scroll-padding-top:90px}}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.03rem/1.85 Plex,"Segoe UI",Tahoma,sans-serif;
-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%}
button{font:inherit;color:inherit}
p{margin:0}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
h1,h2,h3,.k{font-family:Kufi,Plex,sans-serif;line-height:1.5;margin:0}
h1{font-size:clamp(1.7rem,1.05rem + 2.6vw,3rem);font-weight:800}
h2{font-size:clamp(1.3rem,1rem + 1.3vw,1.9rem);font-weight:800}
h3{font-size:1.04rem;font-weight:700}
.lead{color:var(--ink2);font-size:1.07rem;max-width:40em;margin-top:12px}
.dim{color:var(--dim)}
:focus-visible{outline:3px solid var(--sign);outline-offset:2px}
[hidden],html:not(.js) .js{display:none!important}
svg.i{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
/* header */
.top{position:sticky;top:0;z-index:30;background:var(--bg);border-bottom:1px solid var(--line)}
@supports(backdrop-filter:blur(1px)){.top{background:color-mix(in srgb,var(--bg) 86%,transparent);
backdrop-filter:saturate(1.4) blur(12px)}}
.bar{display:flex;align-items:center;gap:6px 18px;min-height:66px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:11px;min-width:0}
.brand svg{flex:none;width:36px;height:36px}
.brand b{display:block;font:800 1rem/1.35 Kufi,Plex,sans-serif;white-space:nowrap}
.brand small{display:block;font-size:.78rem;line-height:1.3;color:var(--dim);white-space:nowrap}
.nav{display:flex;gap:2px;margin-inline-start:auto;overflow-x:auto;scrollbar-width:none}
.nav::-webkit-scrollbar{display:none}
.nav a{padding:6px 13px;border-radius:999px;color:var(--ink2);white-space:nowrap;font-size:.95rem}
.nav a:hover{color:var(--ink);background:var(--raise)}
.nav a[aria-current]{color:var(--ink);background:var(--raise);box-shadow:inset 0 0 0 1px var(--line)}
.sbtn{display:grid;place-items:center;width:42px;height:42px;border-radius:999px;border:1px solid var(--line);
color:var(--ink2);flex:none}
.sbtn:hover{color:var(--ink);border-color:var(--ink2)}
@media(max-width:900px){.top{position:static}.nav{order:3;width:100%;margin-inline-start:0;padding-bottom:10px}
.sbtn{margin-inline-start:auto}}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 22px;
border-radius:999px;border:1.5px solid var(--line2);background:none;font-weight:600;white-space:nowrap;
cursor:pointer;transition:border-color .15s,opacity .15s,transform .15s;min-width:0}
.btn:hover{border-color:var(--ink)}
.btn:active{transform:scale(.98)}
.btn.pri{background:var(--cta);color:var(--on-cta);border-color:var(--cta)}
.btn.pri:hover{opacity:.88}
.btn:disabled{opacity:.35;cursor:default;transform:none}
.acts{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.lnk{background:none;border:0;padding:4px 0;color:var(--ink2);cursor:pointer;text-decoration:underline;
text-underline-offset:4px;text-decoration-color:var(--line2);white-space:nowrap}
.lnk:hover{color:var(--ink);text-decoration-color:var(--ink)}
/* hero */
.hero{display:grid;gap:40px;padding:56px 0 64px;align-items:center}
@media(min-width:940px){.hero{grid-template-columns:1.15fr .85fr;padding:72px 0 80px}}
.eyebrow{display:flex;flex-wrap:wrap;gap:6px 18px;color:var(--ink2);font-size:.93rem;margin-bottom:18px}
.eyebrow span{display:flex;align-items:center;gap:8px;white-space:nowrap}
.eyebrow span::before{content:"";width:7px;height:7px;border-radius:2px;background:var(--ink);transform:rotate(45deg)}
.hl{background:linear-gradient(transparent 80%,var(--sign) 80% 94%,transparent 94%);padding:0 .1em}
.search{margin-top:30px;max-width:600px;position:relative}
.search svg{position:absolute;inset-inline-start:18px;top:15px;color:var(--dim);pointer-events:none}
.search input{width:100%;font:inherit;font-size:1rem;padding:13px 52px 13px 18px;border-radius:999px;
border:1.5px solid var(--line2);background:var(--raise);color:var(--ink);outline:none;-webkit-appearance:none}
.search input:focus{border-color:var(--ink)}
#results{list-style:none;margin:10px 0 0;padding:0;max-height:min(440px,60vh);overflow:auto;
border-radius:16px;background:var(--raise)}
#results:not(:empty){border:1px solid var(--line)}
#results li+li{border-top:1px solid var(--line)}
#results a{display:block;padding:11px 18px;line-height:1.7}
#results a:hover{background:var(--bg)}
#results small{display:block;color:var(--dim);font-size:.85rem}
#results .none{padding:12px 18px;color:var(--dim)}
.stats{display:flex;flex-wrap:wrap;gap:18px 34px;margin:34px 0 0;padding:26px 0 0;border-top:1px solid var(--line);list-style:none}
.stats b{display:block;font:800 1.6rem/1.2 Kufi,Plex,sans-serif}
.stats span{color:var(--dim);font-size:.9rem}
.demo{display:block;background:var(--raise);border:1px solid var(--line);border-radius:22px;padding:14px;
box-shadow:var(--sh);transform:rotate(-1.2deg);transition:transform .25s;max-width:520px;justify-self:center;width:100%}
.demo:hover{transform:rotate(0)}
.demo img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px;background:var(--shot)}
.demo .keys{margin-top:12px;pointer-events:none}
.demo .key{min-height:52px;font-size:1.3rem}
.demo p{display:flex;justify-content:space-between;gap:10px;margin-top:10px;font-size:.88rem;color:var(--dim)}
/* sections */
.sec{padding:60px 0;border-top:1px solid var(--line)}
.head{display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;gap:8px 20px;margin-bottom:26px}
.head .n{display:block;font:600 .85rem/1 Plex,sans-serif;color:var(--dim);margin-bottom:10px;letter-spacing:.06em}
.head p{color:var(--ink2);max-width:36em}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,var(--min,250px)),1fr));gap:14px}
.card{display:flex;align-items:center;gap:16px;padding:18px;background:var(--raise);border:1px solid var(--line);
border-radius:18px;min-width:0;transition:border-color .15s,transform .15s}
a.card:hover{border-color:var(--ink);transform:translateY(-2px)}
.card>div{min-width:0;flex:1}
.card h3{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.card .m{color:var(--dim);font-size:.88rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.badge{display:grid;place-items:center;flex:none;width:58px;height:58px;border-radius:14px;border:2px solid var(--ink);
font:800 1.35rem/1 Kufi,Plex,sans-serif;direction:ltr}
.badge.s{font-size:1rem}
.meter{height:4px;border-radius:2px;background:var(--line);margin-top:10px;overflow:hidden}
.meter i{display:block;height:100%;width:0;background:var(--ok);border-radius:2px}
.plate{display:grid;place-items:center;flex:none;width:64px;height:64px;border-radius:14px;background:#fff;
box-shadow:inset 0 0 0 1px rgba(0,0,0,.08)}
.plate img{max-width:52px;max-height:52px}
.cover{flex-direction:column;align-items:stretch;padding:0;overflow:hidden}
.cover img{display:block;width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--line)}
.cover>div{padding:14px 18px 16px}
.list{list-style:none;margin:0;padding:0;columns:2 300px;column-gap:40px}
.list li{break-inside:avoid;border-bottom:1px solid var(--line)}
.list a{display:flex;align-items:baseline;gap:14px;padding:13px 0}
.list a:hover{color:var(--ink2)}
.list .k{color:var(--dim);font-size:.85rem;min-width:1.8em}
.list span:nth-child(2){flex:1;min-width:0}
.list .m{color:var(--dim);font-size:.85rem;white-space:nowrap}
.resume{display:flex;align-items:center;gap:16px;padding:16px 20px;margin-top:26px;max-width:600px;
border:1.5px solid var(--ink);border-radius:18px}
.resume div{flex:1;min-width:0}
.resume b{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.resume small{color:var(--dim)}
/* inner pages */
.crumbs{display:flex;flex-wrap:wrap;gap:4px 10px;color:var(--dim);font-size:.9rem;margin:28px 0 10px}
.crumbs a:hover{color:var(--ink)}
.crumbs span::before{content:"‹";margin-inline-end:10px}
.ph{padding-bottom:28px;margin-bottom:30px;border-bottom:1px solid var(--line)}
.tool{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:18px}
.sum{display:flex;flex-wrap:wrap;gap:6px 24px;color:var(--ink2)}
.sum b{font-family:Kufi,Plex,sans-serif}
.series{display:grid;grid-template-columns:repeat(auto-fill,minmax(82px,1fr));gap:10px;list-style:none;margin:0;padding:0}
.series a{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:82px;padding:6px 2px;border-radius:16px;
background:var(--raise);border:1.5px solid var(--line);transition:border-color .15s,transform .15s}
.series a:hover{border-color:var(--ink);transform:translateY(-2px)}
.series b{font:800 1.25rem/1.2 Kufi,Plex,sans-serif}
.series small{font-size:.78rem;color:var(--dim);white-space:nowrap}
.series small:empty{display:none}
.series .pass{border-color:var(--ok)}.series .pass small{color:var(--ok);font-weight:600}
.series .fail small{color:var(--bad);font-weight:600}
.legend{display:flex;flex-wrap:wrap;gap:6px 20px;font-size:.85rem;color:var(--dim);margin-top:18px}
.legend span::before{content:"";display:inline-block;width:10px;height:10px;border-radius:3px;margin-inline-end:7px;
border:1.5px solid var(--line2);vertical-align:-1px}
.legend .p::before{border-color:var(--ok);background:var(--ok)}.legend .f::before{border-color:var(--bad);background:var(--bad)}
nav.pn{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:48px 0 0;padding-top:28px;border-top:1px solid var(--line)}
nav.pn a{display:block;padding:14px 18px;border:1px solid var(--line);border-radius:16px;min-width:0}
nav.pn a:hover{border-color:var(--ink)}
nav.pn small{display:block;color:var(--dim);font-size:.82rem}
nav.pn b{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}
nav.pn .nx{grid-column:2;text-align:left}
/* player */
#P>section{display:none}
#P[data-state=intro] .intro,#P[data-state=play] .play,#P[data-state=done] .done,#P[data-state=review] .rev{display:block}
.intro,.done{padding:8px 0 10px}
.ig{display:grid;gap:30px;align-items:center}
@media(min-width:900px){.ig{grid-template-columns:1fr minmax(0,.9fr)}}
.ig .shot{transform:rotate(-1.2deg);box-shadow:var(--sh)}
.facts{display:flex;flex-wrap:wrap;gap:16px 40px;margin:26px 0 4px;padding:0;list-style:none}
.facts b{display:block;font:800 1.9rem/1.2 Kufi,Plex,sans-serif}
.facts span{color:var(--dim);font-size:.9rem}
.phead{display:flex;align-items:center;gap:10px 18px;flex-wrap:wrap;margin-bottom:12px}
.phead .k{font-size:1.05rem;font-weight:700}
.phead .lnk{margin-inline-start:auto}
.prog{display:flex;gap:3px;margin-bottom:18px}
.prog i{flex:1;height:6px;border-radius:3px;background:var(--line)}
.prog .cur{background:var(--ink)}.prog .ok{background:var(--ok)}.prog .bad{background:var(--bad)}
.stage{display:grid;gap:18px 26px}
@media(min-width:900px){.stage{grid-template-columns:minmax(0,1fr) 330px;align-items:start}}
.shot{display:grid;gap:2px;background:var(--shot);border-radius:18px;overflow:hidden}
.shot.two{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.shot img{display:block;width:100%;aspect-ratio:4/3;max-height:min(64vh,620px);object-fit:contain}
@media(orientation:landscape) and (max-height:520px){.stage{grid-template-columns:minmax(0,1fr) minmax(250px,300px)}
.shot img{max-height:calc(100vh - 100px)}}
.au{display:flex;align-items:center;gap:12px;padding-bottom:16px;margin-bottom:16px;border-bottom:1px solid var(--line)}
.pb{display:grid;place-items:center;flex:none;width:48px;height:48px;border-radius:999px;border:1.5px solid var(--ink);
background:none;cursor:pointer}
.pb .pa,.pb.on .pl{display:none}.pb.on .pa{display:block}
.au>span{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sw{display:flex;align-items:center;gap:8px;color:var(--ink2);font-size:.88rem;cursor:pointer;white-space:nowrap}
.sw input{appearance:none;-webkit-appearance:none;margin:0;width:38px;height:22px;border-radius:999px;background:var(--line2);
position:relative;cursor:pointer;transition:background .15s}
.sw input::after{content:"";position:absolute;top:3px;inset-inline-start:3px;width:16px;height:16px;border-radius:50%;
background:var(--raise);transition:transform .15s}
.sw input:checked{background:var(--ink)}
.sw input:checked::after{transform:translateX(-16px)}
.keys{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.key{min-height:clamp(58px,17vw,76px);border-radius:16px;border:2px solid var(--line2);background:var(--raise);
font:800 1.6rem/1 Kufi,Plex,sans-serif;cursor:pointer;transition:transform .1s,background .1s;min-width:0}
.key:hover{border-color:var(--ink)}
.key:active{transform:scale(.96)}
.key[aria-pressed=true]{background:var(--sign);border-color:var(--sign);color:#16181b}
.key:disabled{cursor:default;transform:none}
.key.ok{background:var(--ok);border-color:var(--ok);color:#fff}
.key.bad{background:var(--bad);border-color:var(--bad);color:#fff}
.key.miss{border-color:var(--ok);border-style:dashed;color:var(--ok)}
.play .acts{display:grid;grid-template-columns:1fr auto;margin-top:12px}
.fb{margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}
.vd{font:700 1.1rem/1.6 Kufi,Plex,sans-serif}
.vd.ok{color:var(--ok)}.vd.bad{color:var(--bad)}
.vd small{display:block;font:600 .95rem/1.6 Plex,sans-serif;color:var(--ink)}
.fb .ex{color:var(--ink2);margin-top:8px}
.hint{display:none;margin-top:16px;font-size:.82rem;color:var(--dim)}
@media(hover:hover) and (pointer:fine){.hint{display:block}}
kbd{font:inherit;border:1px solid var(--line2);border-bottom-width:2px;border-radius:5px;padding:0 5px}
.big{font:800 clamp(3.4rem,2rem + 6vw,5.5rem)/1.1 Kufi,Plex,sans-serif;margin:6px 0 4px;direction:ltr;text-align:right}
.big span{color:var(--dim);font-size:.45em}
.dv{font:700 1.15rem/1.6 Kufi,Plex,sans-serif}
.dv.ok{color:var(--ok)}.dv.bad{color:var(--bad)}
.chips{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:6px;margin-top:26px;max-width:640px}
.chips a{display:grid;place-items:center;height:40px;border-radius:10px;font-weight:600;color:#fff;font-size:.95rem}
.chips .ok{background:var(--ok)}.chips .bad{background:var(--bad)}
.qs{list-style:none;margin:0;padding:0}
.q{padding:30px 0;border-top:1px solid var(--line);max-width:760px}
.q:first-child{border-top:0}
.qh{display:flex;align-items:baseline;gap:14px;margin-bottom:12px}
.qh .r{font-size:.9rem;font-weight:600}
.qh .r.ok{color:var(--ok)}.qh .r.bad{color:var(--bad)}
.qm{display:grid;gap:8px}
.qm img{display:block;width:100%;height:auto;border-radius:14px;background:var(--shot)}
.q audio{width:100%;max-width:420px;margin-top:12px;display:block}
details{margin-top:12px}
summary{display:inline-flex;align-items:center;gap:8px;cursor:pointer;padding:8px 18px;border-radius:999px;
border:1.5px solid var(--line2);font-weight:600;list-style:none}
summary::-webkit-details-marker{display:none}
summary:hover{border-color:var(--ink)}
details[open] summary{border-color:var(--ink)}
.ans{font-weight:700;margin-top:14px}
.q .ex,.text{color:var(--ink2);margin-top:6px}
/* signs / tips / cases / lessons */
.signs{--min:210px}
.sg{position:relative;display:flex;flex-direction:column;gap:12px;padding:16px;background:var(--raise);
border:1px solid var(--line);border-radius:18px}
.sg .plate{width:100%;height:150px;border-radius:12px}
.sg .plate img{max-width:80%;max-height:126px}
.sg header{display:flex;align-items:center;justify-content:space-between;gap:10px}
.sg header b{color:var(--dim);font:600 .85rem/1 Plex,sans-serif}
.say{display:inline-flex;align-items:center;gap:6px;height:34px;padding:0 12px;border-radius:999px;
border:1.5px solid var(--line2);background:none;cursor:pointer;font-size:.85rem;white-space:nowrap}
.say:hover,.say.on{border-color:var(--ink)}
.sg p{line-height:1.75;transition:filter .2s}
.hidem .sg{cursor:pointer}
.hidem .sg:not(.shown) p{filter:blur(7px);user-select:none}
.sg:target{border-color:var(--ink)}
.fig{margin:0;padding:0 0 30px}
.figs{--min:320px;gap:30px 28px}
.fig img{display:block;width:100%;height:auto;border-radius:14px;background:var(--line)}
.fig figcaption{display:flex;gap:12px;margin-top:12px;color:var(--ink2)}
.fig figcaption b{font-family:Kufi,Plex,sans-serif;color:var(--dim);font-size:.9rem;flex:none}
.pages{display:grid;gap:22px;max-width:900px}
.pages img{display:block;width:100%;height:auto;border-radius:14px;background:var(--line)}
.faq details{margin:0;border-top:1px solid var(--line);max-width:820px}
.faq summary{display:flex;border:0;border-radius:0;padding:18px 0;font:700 1.02rem/1.7 Kufi,Plex,sans-serif;gap:14px}
.faq summary::after{content:"+";margin-inline-start:auto;font:400 1.4rem/1 Plex,sans-serif;color:var(--dim)}
.faq details[open] summary::after{content:"−"}
.faq details p{color:var(--ink2);padding:0 0 22px}
footer{margin-top:80px;border-top:1px solid var(--line);padding:36px 0 46px;color:var(--dim);font-size:.9rem}
footer .wrap{display:flex;flex-wrap:wrap;gap:14px 40px;justify-content:space-between}
footer p{max-width:34em}
footer a{text-decoration:underline;text-underline-offset:3px}
@media(prefers-reduced-motion:reduce){*{transition:none!important}.demo{transform:none}}