:root{--intro-ink:#26351d;--intro-teal:#497510;--intro-muted:#63776e;--intro-line:#d7e1d9;--intro-paper:#f5f6f1}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body.intro-page{margin:0;background:var(--intro-paper);color:var(--intro-ink);font-family:Arial,Helvetica,sans-serif}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid #7bae38;outline-offset:4px}img{max-width:100%;height:auto}.intro-nav{max-width:1320px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:22px 32px;border-bottom:1px solid var(--intro-line)}.intro-wordmark{font-size:18px;line-height:1.4;max-width:220px}.intro-wordmark b{display:block;font-size:27px}.intro-nav>div{display:flex;flex-wrap:wrap;align-items:center;gap:24px;font-size:14px}.intro-main{max-width:1320px;margin:auto;padding:0 32px}.intro-hero{display:grid;grid-template-columns:1.06fr 1fr;align-items:center;gap:56px;padding:70px 0 64px}.intro-kicker{font-size:11px;letter-spacing:2px;font-weight:700;color:var(--intro-teal);margin:0 0 20px}.intro-hero h1{font-size:clamp(40px,4.5vw,66px);line-height:1.08;letter-spacing:-2.5px;margin:0 0 26px;font-weight:750}.intro-hero h1 em{font-style:normal;color:#497510}.intro-lead{font-size:19px;line-height:1.7;max-width:500px;color:var(--intro-muted)}.intro-actions{display:flex;gap:12px;flex-wrap:wrap;margin:28px 0 16px}.intro-button,.intro-outline{display:inline-flex;justify-content:center;align-items:center;padding:16px 22px;min-height:48px;border-radius:9px;font-size:14px;font-weight:700;border:1px solid var(--intro-teal)}.intro-button{background:var(--intro-teal);color:white}.intro-button:hover{background:#36590b}.intro-outline{background:white;color:var(--intro-teal)}.intro-outline:hover{background:#eff6e5}.intro-button.small{padding:12px 18px}.intro-fine{font-size:12px;color:var(--intro-muted);line-height:1.8}.intro-hero-image{margin:0;position:relative;overflow:hidden;background:#fff;border:1px solid var(--intro-line);border-radius:28px;padding:18px 24px 0}.intro-hero-image>img{width:100%;height:360px;object-fit:contain}.intro-hero-image figcaption{border-top:1px solid var(--intro-line);padding:22px 4px;display:grid;gap:8px}.intro-hero-image figcaption>span{font-size:10px;letter-spacing:2px;color:var(--intro-muted)}.intro-hero-image strong{font-size:25px}.intro-hero-image small{color:var(--intro-muted)}.intro-section{padding:60px 0;border-top:1px solid var(--intro-line);scroll-margin-top:24px}.intro-section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:30px}.intro-section h2{font-size:clamp(27px,3vw,39px);letter-spacing:-1.2px;line-height:1.2;margin:0}.intro-section-head>p{max-width:440px;font-size:15px;line-height:1.8;color:var(--intro-muted);margin:0}.intro-lessons{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.intro-lessons>button{min-width:0;display:flex;flex-direction:column;gap:12px;text-align:left;border:1px solid var(--intro-line);background:white;border-radius:15px;padding:20px;color:var(--intro-ink);transition:transform .15s}.intro-lessons>button:hover{transform:translateY(-4px);border-color:#688b7e}.intro-lesson-number{font-size:10px;letter-spacing:1px;color:var(--intro-muted)}.intro-lessons img{width:100%;height:160px;object-fit:contain}.intro-lessons strong{font-size:20px;width:100%;display:flex;justify-content:space-between;gap:4px}.intro-lessons small{font-size:12px;line-height:1.6;color:var(--intro-muted)}.intro-demo-label{display:block;font-size:10px;letter-spacing:1px;font-weight:bold;color:var(--intro-teal)}.intro-tournament>h2{margin-bottom:28px;font-weight:800}.intro-tournament-photos{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.intro-tournament-photos figure{margin:0;min-width:0;overflow:hidden;border:1px solid var(--intro-line);border-radius:15px;background:white;aspect-ratio:3/2}.intro-tournament-photos img{display:block;width:100%;height:100%;object-fit:cover}.intro-page .intro-tournament-photos .yk-photo-brand::before{top:10px;left:10px;width:42px;height:36px}.intro-pricing{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.intro-pricing>div>p:not(.intro-kicker){line-height:1.8;color:var(--intro-muted)}.intro-price-card{background:white;border:1px solid #b7cabc;border-radius:24px;padding:36px;box-shadow:0 10px 20px #193e4409}.intro-price-card h3{font-size:28px;line-height:1.4;margin:20px 0}.intro-price-card ul{list-style:none;padding:0;margin:24px 0}.intro-price-card li{font-size:15px;border-bottom:1px solid #e7ece7;padding:13px 0;line-height:1.6}.intro-price{margin:24px 0}.intro-price strong{display:block;font-size:22px}.intro-price small{display:block;font-size:12px;line-height:1.6;color:var(--intro-muted);margin-top:10px}.intro-price-card .intro-button{width:100%}.intro-price-login{display:block;text-align:center;font-size:12px;margin-top:20px;line-height:1.7}.intro-footer{border-top:1px solid var(--intro-line);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding:30px 0 40px;font-size:13px;color:var(--intro-muted)}#demo-reader{width:min(920px,calc(100% - 32px));max-height:90dvh;border:1px solid #c7d7ce;border-radius:18px;padding:0;color:var(--intro-ink);background:white}#demo-reader::backdrop{background:#102a34b5}#demo-reader>header{position:sticky;top:0;background:#fff;z-index:3;border-bottom:1px solid var(--intro-line);padding:20px 26px;display:flex;justify-content:space-between;align-items:center;gap:20px}#demo-reader h2{font-size:23px;margin:8px 0 0}#demo-reader header small{font-size:10px;letter-spacing:1.5px}#demo-reader-close{flex-shrink:0;border:1px solid var(--intro-line);border-radius:50%;width:44px;height:44px;background:#f0f4ef;color:var(--intro-ink)}#demo-reader-body{padding:24px 32px}#demo-reader-body figure{margin:20px 0;text-align:center}#demo-reader-body img{max-height:700px;object-fit:contain;width:100%}#demo-reader-body h3{margin-top:30px;font-size:22px;line-height:1.4}#demo-reader-body p{font-size:16px;line-height:1.9;text-align:justify;hyphens:auto}#demo-reader-body table{border-collapse:collapse;font-size:14px;line-height:1.6;width:100%}#demo-reader-body td{padding:10px;border:1px solid var(--intro-line)}.intro-table-scroll{overflow:auto}.intro-page .yk-photo-brand::before{top:30px;left:10px}.intro-page .intro-hero-image.yk-photo-brand::before{top:16px;left:16px}@media(max-width:1050px){.intro-nav{align-items:flex-start}.intro-nav>div{gap:16px;justify-content:flex-end}.intro-hero{gap:30px}.intro-hero h1{letter-spacing:-1.5px}.intro-pricing{gap:35px}.intro-lessons,.intro-tournament-photos{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:650px){.intro-main{padding:0 20px}.intro-nav{padding:16px 20px;display:block}.intro-nav>div{margin-top:18px;justify-content:flex-start;gap:16px;font-size:12px}.intro-nav .small{width:100%;padding:12px}.intro-wordmark{max-width:none;font-size:16px}.intro-wordmark b{display:inline;font-size:20px}.intro-hero{grid-template-columns:1fr;padding:36px 0;gap:24px}.intro-hero h1{font-size:42px;letter-spacing:-1.5px}.intro-lead{font-size:16px}.intro-actions>*{width:100%}.intro-hero-image>img{height:260px}.intro-section{padding:36px 0}.intro-section-head{display:block}.intro-section-head>p{margin-top:18px}.intro-lessons,.intro-tournament-photos{gap:12px}.intro-lessons>button{padding:13px}.intro-lessons strong{font-size:16px}.intro-lessons img{height:120px}.intro-lesson-number{font-size:9px}.intro-pricing{grid-template-columns:1fr;gap:24px}.intro-price-card{padding:24px}.intro-price-card h3{font-size:25px}#demo-reader{width:calc(100% - 16px);max-height:94dvh}#demo-reader>header{padding:16px}#demo-reader h2{font-size:19px}#demo-reader-body{padding:18px}#demo-reader-body p{font-size:15px}.intro-footer{flex-direction:column}.intro-kicker{font-size:10px;letter-spacing:1.5px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.intro-lessons>button{transition:none}}

/* Prominent main-panel entry at the top and bottom of the page. */
.intro-button.intro-panel-login{min-height:52px;max-width:100%;padding:16px 22px;font-size:clamp(16px,1.4vw,18px);font-weight:800;line-height:1.4;text-align:center;white-space:normal;overflow-wrap:anywhere}
.intro-bottom-access{display:flex;justify-content:center;padding:8px 0 32px}
.intro-bottom-access .intro-panel-login{width:100%;max-width:540px;min-height:60px;font-size:clamp(18px,2vw,22px)}
@media(max-width:650px){.intro-nav .intro-panel-login{width:100%}}