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@media(max-width:530px){h1{letter-spacing:-1.5px}.hero-text{font-size:14px}.hero-actions{gap:16px;align-items:flex-start;flex-direction:column}.hero-proof strong{font-size:19px}.hero-proof small{font-size:8px}.hero-proof>div{padding:0 8px}.hero-art{right:-290px;bottom:-30px}.value-grid{grid-template-columns:1fr}.master-image{height:370px}.master-knight{font-size:230px}.achievements{gap:35px}.achievement-grid strong{font-size:31px}.trial{grid-template-columns:1fr;padding-left:22px;padding-right:22px}.section{padding-left:22px;padding-right:22px}.master-copy{padding-left:22px;padding-right:22px}footer{padding-left:22px;padding-right:22px}.footer-contact{gap:12px;flex-direction:column}}

/* Premium artwork and material upgrade */
.brand-logo{display:block;width:112px;height:76px;overflow:hidden;background:#000;border:1px solid #80601b;padding:3px;box-shadow:0 7px 20px #0008}.brand-logo img{display:block;width:100%;height:100%;object-fit:contain;object-position:center}.hero{min-height:825px;background:#050505}.hero:after{content:"";position:absolute;inset:0;z-index:-2;background-image:linear-gradient(90deg,#050505 0%,#050505 27%,#050505c9 45%,#05050518 72%,#050505 100%),linear-gradient(0deg,#050505 0%,transparent 32%),url('assets/chess-hero-premium.png');background-position:center;background-size:cover;background-repeat:no-repeat}.hero:before{background:radial-gradient(ellipse at 68% 85%,#c1811814,transparent 45%),linear-gradient(90deg,#050505 0%,#05050577 55%,transparent)}.hero-art{display:none}.intro{background-color:#efe9df;background-image:linear-gradient(90deg,#fff8,#fff0),linear-gradient(45deg,#dacfbf30 25%,transparent 25%),linear-gradient(-45deg,#dacfbf30 25%,transparent 25%);background-size:auto,64px 64px,64px 64px}.value-grid{box-shadow:0 20px 45px #21190b12}.value-grid article{transition:transform .35s,box-shadow .35s}.value-grid article:hover{transform:translateY(-9px);position:relative;z-index:2;box-shadow:0 20px 35px #5a3b0760}.masterclass{background:#0d0c0a}.master-image{background-image:linear-gradient(90deg,#09070533,#090705aa),url('assets/chess-hero-premium.png');background-size:cover;background-position:72% center}.master-image:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,#0d0c0a,transparent 48%),radial-gradient(circle at 70% 50%,transparent 10%,#0007 78%)}.master-board,.master-knight{display:none}.master-caption{z-index:2;background:#080705d1;border:1px solid #a37420;padding:21px 24px;box-shadow:18px 18px 40px #000a}.achievement-grid{box-shadow:16px 16px 0 #c0923726}.trial{background-image:linear-gradient(100deg,#060504ed 0%,#060504e8 42%,#06050498 75%,#060504e8),url('assets/chess-hero-premium.png');background-position:center;background-size:cover}.trial-form{border:1px solid #b78326;box-shadow:0 26px 60px #000b,0 0 0 7px #d49a1710}.gold-button{transition:transform .25s,filter .25s}.gold-button:hover{transform:translateY(-3px);filter:brightness(1.12)}footer .brand-logo{width:97px;height:66px}@media(max-width:850px){.hero:after{background-position:60% center}.brand-logo{width:85px;height:58px}}@media(max-width:530px){.brand-logo{width:70px;height:48px;padding:2px}.hero{min-height:760px}.hero:after{background-position:65% center;background-image:linear-gradient(90deg,#050505 0%,#050505bd 62%,#0505052a),linear-gradient(0deg,#050505 0%,transparent 30%),url('assets/chess-hero-premium.png')}}
@media(max-width:530px){.hero:after{background-position:center,center,72% bottom;background-size:100% 100%,100% 100%,auto 720px;background-image:linear-gradient(90deg,#050505 0%,#050505d9 54%,#05050532 100%),linear-gradient(0deg,#050505 0%,transparent 42%),url('assets/chess-hero-premium.png')}}