:root{--navy:#0B1F3A;--blue:#155EEF;--cyan:#16DCE5;--off:#F7F9FC;--soft:#E9F0F7;--text:#172033;--white:#fff;--cta-url:'#contact'}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{font-family:'Prompt',sans-serif;color:var(--text);background:var(--off);font-size:18px;line-height:1.7;font-weight:400}
a{color:inherit}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:6px}
.wrap{max-width:1200px;margin:0 auto;padding:0 32px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:12px 28px;border-radius:10px;background:var(--navy);color:#fff;font-size:17px;font-weight:500;text-decoration:none;border:2px solid var(--navy);transition:background .2s,border-color .2s,transform .2s}
.btn:hover{background:var(--blue);border-color:var(--blue);transform:translateY(-1px)}
.btn-sm{min-height:44px;padding:8px 20px}
.btn-cyan{background:var(--cyan);color:var(--navy);border-color:var(--cyan);font-weight:600}
.btn-cyan:hover{background:#fff;border-color:#fff;color:var(--navy)}
/* image slots */
.slot{position:relative;background:var(--soft);border:1.5px dashed #B9C9DC;border-radius:16px;overflow:hidden;display:flex;align-items:center;justify-content:center;color:#5B6B82;font-size:15px;text-align:center}
.slot img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.slot img[src=""]{display:none}
.slot span{padding:8px;font-weight:500}
.r169{aspect-ratio:16/9}.r32{aspect-ratio:3/2}.r45{aspect-ratio:4/5}.rbook{aspect-ratio:2/3}
/* header */
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);border-bottom:1px solid var(--soft)}
.hd{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.logo{width:150px;height:48px;border-radius:8px;font-size:13px}
.logo img{object-fit:contain}
nav ul{display:flex;gap:28px;list-style:none;align-items:center}
nav a{text-decoration:none;font-size:16px;font-weight:500;color:var(--navy)}
nav a:not(.btn):hover{color:var(--blue)}
.burger{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer}
.burger span{display:block;width:24px;height:2px;background:var(--navy);margin:5px auto}
section{padding:96px 0}
h1,h2,h3{color:var(--navy);line-height:1.3}
h1{font-size:48px;font-weight:700}
h2{font-size:38px;font-weight:700}
.sub{font-size:26px;font-weight:500;color:var(--blue);margin-top:8px}
p{max-width:620px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
/* hero */
#hero{background:#fff;padding:80px 0 96px}
#hero .desc{margin:20px 0 32px;font-size:19px}
#hero .accent{width:56px;height:4px;background:var(--cyan);border-radius:2px;margin-bottom:24px}
/* problem */
#problem .txt p{margin-top:18px}
/* courses */
#courses{background:#fff}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:40px}
.card{background:#fff;border:1px solid #D6E2EF;border-radius:14px;padding:28px 28px 28px 32px;position:relative;transition:transform .2s,border-color .2s}
.card::before{content:"";position:absolute;left:0;top:28px;width:4px;height:36px;border-radius:0 3px 3px 0;background:linear-gradient(var(--blue),var(--cyan))}
.card:hover{transform:translateY(-3px);border-color:var(--blue)}
.card h3{font-size:22px;font-weight:600}
.card p{margin-top:6px;font-size:17px}
/* clients */
#clients{background:var(--soft);text-align:center}
#clients h2{max-width:760px;margin:0 auto}
.wall{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;max-width:900px;margin:40px auto 32px;list-style:none}
.wall li{background:#fff;border-radius:12px;padding:22px 12px;font-size:21px;font-weight:600;color:var(--navy)}
#clients p{margin:0 auto}
/* about */
#about .grid{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start}
#about .aimg{grid-row:1/span 6;position:sticky;top:100px}
#about .body p{margin-top:16px}
.proofs{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.proof{background:#fff;border:1px solid #D6E2EF;border-radius:14px;padding:16px}
.proof .slot{border-radius:8px;margin-bottom:12px}
.proof .lbl{font-size:13px;color:var(--blue);font-weight:600}
.proof .t{font-size:16px;font-weight:600;color:var(--navy);line-height:1.5}
.fb{margin-top:16px}
.browser{background:#fff;border:1px solid #D6E2EF;border-radius:12px;overflow:hidden}
.bar{height:28px;background:var(--soft);display:flex;gap:6px;align-items:center;padding:0 12px}
.bar i{width:9px;height:9px;border-radius:50%;background:#B9C9DC}
.browser .slot{border-radius:0;border:0;aspect-ratio:16/10}
.browser .slot img{object-fit:contain}
.closing{margin-top:24px;font-weight:500}
.about-head .sub{font-size:21px}
/* cta */
#contact{background:var(--navy);color:#fff;text-align:center;position:relative;overflow:hidden}
#contact::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--blue),var(--cyan))}
#contact::after{content:"";position:absolute;right:-120px;top:-120px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(22,220,229,.12),transparent 70%)}
#contact h2{color:#fff;max-width:760px;margin:0 auto}
#contact p{margin:16px auto 0;color:#DDE6F2}
#contact .btn{margin-top:36px;position:relative;z-index:1}
footer{background:#081629;color:#B8C6D8;padding:36px 0;font-size:15px}
.ft{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.ft strong{color:#fff;font-weight:600;font-size:17px}
.fade{animation:fi .6s ease both}
@keyframes fi{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media (max-width:1024px){nav ul{gap:16px}.two{gap:40px}h1{font-size:40px}}
@media (max-width:820px){
 .wrap{padding:0 20px}
 section{padding:64px 0}
 .burger{display:block}
 nav ul{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:12px 20px 20px;gap:4px;border-bottom:1px solid var(--soft)}
 nav ul.open{display:flex}
 nav a{display:block;padding:12px 4px}
 nav .btn{margin-top:8px}
 .two,.grid2,#about .grid,.proofs{grid-template-columns:1fr}
 h1{font-size:34px}h2{font-size:28px}.sub{font-size:21px}
 #problem .two{gap:28px}
 #about .grid{gap:0}
 #about .aimg{grid-row:auto;position:relative;margin:24px 0 8px;order:2}
 #about .about-head{order:1}#about .body{order:3}
 #about .text{display:contents}
 #about .body,#about .proofs,#about .fb,#about .closing{order:3}
 .wall{grid-template-columns:1fr 1fr}
 .wall li{font-size:17px}
 .btn{width:100%}
 .hd .btn{width:auto}
 .ft{flex-direction:column;align-items:flex-start}
}
.proofs{grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}
.proof{display:flex;gap:14px;align-items:center;padding:12px}
.proof .slot{width:76px;flex:0 0 76px;margin:0;font-size:10px;border-radius:6px}
.proof .slot span{padding:2px}
.fb{display:flex;gap:14px;align-items:center;margin-top:12px}
.fb .browser{width:230px;flex:0 0 230px}
.fb .cap{font-size:14px;color:#5B6B82}
.bar{height:16px;padding:0 8px;gap:4px}.bar i{width:6px;height:6px}
.browser .slot{font-size:11px}
@media (max-width:820px){.proofs{grid-template-columns:1fr}.fb .browser{width:180px;flex-basis:180px}}

.slot img[src]:not([src=""])+span{display:none}
@media (max-width:820px){#about .grid{display:flex;flex-direction:column}#about .aimg{width:100%;height:auto}}
@media (max-width:820px){#about .aimg{aspect-ratio:auto;display:block;flex:none}#about .aimg img{position:static;display:block;width:100%;height:auto;aspect-ratio:4/5}#about .aimg span{display:none}}
@media (max-width:820px){#about .aimg{top:auto}}
/* real photos */
.slot:has(img[src]:not([src=""])){border:0;background:transparent}
.logo{width:44px;height:44px;border-radius:50%}
.logo img{object-fit:cover;border-radius:50%}
.r169{aspect-ratio:1448/1086}
.r45{aspect-ratio:2/3}
#about .aimg img{object-fit:cover;object-position:center top}
.rbook{aspect-ratio:465/701}
.rbook img{object-fit:contain}
.browser .slot{aspect-ratio:859/319;background:#fff}
@media (max-width:820px){#about .aimg img{aspect-ratio:2/3}}
/* fb page +20% */
.fb .browser{width:276px;flex:0 0 276px;max-width:100%}
@media (max-width:820px){.fb{flex-wrap:wrap}.fb .browser{width:216px;flex-basis:216px;max-width:100%}}
@media (min-width:821px){#about .grid{row-gap:0}}
/* v5: FB page image spans exactly from book 1 image's left edge to book 2 image's right edge */
.fb .browser,.fb .browser{width:calc(50% + 84px);flex:0 0 calc(50% + 84px);max-width:none;margin-left:12px}
@media (max-width:820px){.proofs{grid-template-columns:1fr 1fr;gap:12px}.proof{flex-direction:column;align-items:flex-start}.proof .slot{margin:0}.fb .browser{width:calc(50% + 84px);flex-basis:calc(50% + 84px);max-width:none}}
@media (max-width:820px){#about .fb{width:100%;align-self:stretch;box-sizing:border-box}}
/* v6: FB frame spans the full cards row (card 1 left edge to card 2 right edge) at every width */
#about .fb .browser{width:100%;flex:1 1 100%;max-width:none;margin-left:0}
#about .fb{width:100%;box-sizing:border-box}
@media (max-width:820px){.wall li:last-child:nth-child(odd){grid-column:1/-1}}

/* gallery v8 */
.feat{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;max-width:900px;margin:32px auto 0;list-style:none;padding:0}
.feat a{display:block;border-radius:12px;overflow:hidden;aspect-ratio:4/3;background:var(--soft)}
.feat img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s}
.feat a:hover img,.gal-grid a:hover img{transform:scale(1.04)}
.feat-cta{text-align:center;margin-top:24px}
.gal-page{padding:56px 0 72px;background:var(--off)}
.gal-page h1{color:var(--navy);text-align:center;font-size:clamp(28px,4vw,40px);margin:0 0 8px}
.gal-sub{text-align:center;color:var(--text);margin:0 0 32px}
.gal-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;list-style:none;padding:0;margin:0}
.gal-grid a{display:block;border-radius:12px;overflow:hidden;aspect-ratio:4/3;background:var(--soft);box-shadow:0 2px 10px rgba(11,31,58,.08)}
.gal-grid img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .3s}
.gal-cta{text-align:center;margin-top:40px}
.lb{position:fixed;inset:0;z-index:1000;background:rgba(5,12,24,.92);display:flex;align-items:center;justify-content:center}
.lb[hidden]{display:none}
.lb img{max-width:92vw;max-height:86vh;border-radius:8px;object-fit:contain}
.lb button{position:absolute;background:rgba(255,255,255,.12);color:#fff;border:0;border-radius:50%;width:52px;height:52px;font-size:34px;line-height:1;cursor:pointer;font-family:inherit}
.lb button:hover{background:rgba(255,255,255,.25)}
.lb-x{top:16px;right:16px}.lb-p{left:16px;top:50%;transform:translateY(-50%)}.lb-n{right:16px;top:50%;transform:translateY(-50%)}
.lb-c{position:absolute;bottom:16px;left:0;right:0;text-align:center;color:#cfd8e3;font-size:15px}
@media (max-width:820px){.feat,.gal-grid{grid-template-columns:1fr 1fr;gap:10px}.gal-page{padding:40px 0 56px}.lb button{width:44px;height:44px;font-size:28px}.lb-p{left:6px}.lb-n{right:6px}}