:root{--blue:#1f6fb2;--dark:#153a5b;--text:#17212b;--muted:#5c6b7a;--line:#dbe5ee;--soft:#f5f8fb;--white:#fff;--shadow:0 8px 24px rgba(20,50,80,.08)}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--text);background:#fff;line-height:1.55}.container{width:min(1120px,calc(100% - 32px));margin:0 auto}.site-header{background:#fff;border-bottom:1px solid var(--line)}.header-inner{padding:18px 0}.brand{display:flex;gap:14px;align-items:center;text-decoration:none;color:inherit}.brand-icon{width:54px;height:54px;border-radius:12px}.brand-name{font-size:28px;font-weight:800;color:var(--blue);line-height:1}.brand-subtitle{font-size:13px;color:var(--muted);letter-spacing:.03em;margin-top:4px}.main-content{padding:36px 0 56px}.page-intro{background:linear-gradient(180deg,#fff,var(--soft));border:1px solid var(--line);border-radius:18px;padding:34px;box-shadow:var(--shadow);margin-bottom:28px}.page-intro.compact{padding:26px}.page-intro h1{margin:0 0 12px;font-size:42px;line-height:1.1;color:var(--dark)}.page-intro p{font-size:18px;color:var(--muted);max-width:850px;margin:0}.section-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.section-card,.module-card,.content-card,.diagram-card,.product-card{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}.section-card{padding:24px}.section-card h2{margin:0 0 6px;color:var(--dark)}.count{color:var(--muted);font-weight:700;margin:0 0 14px}.scenario-link-list{margin:0;padding-left:18px}.scenario-link-list li{margin:7px 0}.scenario-link-list a,.module-card a,.related-list a,.breadcrumb a,.footer-inner a{color:var(--blue);text-decoration:none}.scenario-link-list a:hover,.module-card a:hover,.related-list a:hover,.breadcrumb a:hover,.footer-inner a:hover{text-decoration:underline}.view-all{display:inline-block;margin-top:14px;font-weight:700}.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px}.product-card{padding:24px;display:flex;gap:22px;align-items:center}.product-card h2{margin:0 0 8px;color:var(--dark)}.product-card p{margin:0 0 14px;color:var(--muted)}.store-badges{display:flex;gap:10px;flex-wrap:wrap}.store-badge{height:42px;width:auto}.book-cover{width:110px;max-width:30%;height:auto;border-radius:6px;box-shadow:0 6px 18px rgba(0,0,0,.16)}.amazon-link{display:inline-block;background:var(--blue);color:white;text-decoration:none;font-weight:800;padding:10px 16px;border-radius:10px}.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:18px}.breadcrumb span{margin:0 6px;color:#9aa8b6}.module-list{display:grid;gap:20px}.module-card{padding:22px}.module-card h2{margin:0 0 6px;color:var(--dark)}.module-card .level{margin:0 0 14px;color:var(--muted);font-weight:700}.scenario-page{max-width:900px}.scenario-header{margin-bottom:22px}.eyebrow{margin:0 0 6px;color:var(--blue);font-weight:800;text-transform:uppercase;letter-spacing:.06em;font-size:13px}.scenario-header h1{font-size:40px;line-height:1.12;color:var(--dark);margin:0 0 8px}.scenario-meta{color:var(--muted);margin:0}.diagram-card{margin:0 0 22px;padding:18px}.scenario-image{display:block;max-width:100%;height:auto;margin:0 auto;border-radius:10px}.diagram-card figcaption{margin-top:10px;color:var(--muted);font-size:14px;text-align:center}.content-card{padding:24px;margin-bottom:20px}.content-card h2{margin:0 0 10px;color:var(--dark)}.content-card p{margin:0;color:var(--muted);font-size:17px}.related-list{margin:0;padding-left:18px}.related-list li{margin:8px 0}.prev-next{display:flex;justify-content:space-between;gap:12px;margin:24px 0}.prev-next a{display:block;flex:1;border:1px solid var(--line);border-radius:12px;padding:14px 16px;text-decoration:none;color:var(--blue);font-weight:800;background:#fff}.prev-next .spacer{flex:1}.site-footer{border-top:1px solid var(--line);background:var(--soft)}.footer-inner{padding:24px 0;color:var(--muted);font-size:14px;display:flex;justify-content:space-between;gap:16px}.footer-inner p{margin:0}@media (max-width:800px){.section-grid,.cta-grid{grid-template-columns:1fr}.product-card{align-items:flex-start}.page-intro h1,.scenario-header h1{font-size:32px}.page-intro{padding:24px}.brand-name{font-size:24px}.brand-subtitle{font-size:12px}.footer-inner{display:block}.footer-inner p{margin:6px 0}}@media (max-width:520px){.product-card{display:block}.book-cover{max-width:150px;width:45%;margin-bottom:14px}.store-badge{height:38px}.prev-next{display:block}.prev-next a{margin-bottom:10px}}


/* v4.2 Pickleball35 brand/header refinements */
.site-header{background:#fff;border-bottom:1px solid #cfd8e3}
.header-inner{padding:24px 0 26px;max-width:900px;margin:0 auto}
.brand{gap:22px;align-items:center}
.brand-icon{width:112px;height:112px;border-radius:0}
.brand-name{font-size:78px;letter-spacing:-.04em;font-weight:800;color:#2b67f6;line-height:.92}
.brand-subtitle{font-size:16px;color:#111827;letter-spacing:0;margin-top:8px;font-weight:700}
.cta-grid{margin:22px 0 26px}
.book-cover{width:280px;max-width:48%;height:auto;border-radius:6px;box-shadow:0 8px 22px rgba(0,0,0,.18)}
.scenario-summary-card{margin-bottom:0}
@media (max-width:800px){.header-inner{max-width:min(100% - 32px,900px);padding:16px 0}.brand-icon{width:72px;height:72px}.brand-name{font-size:46px}.brand-subtitle{font-size:13px}.book-cover{width:170px;max-width:38%}}
@media (max-width:520px){.brand{gap:12px}.brand-icon{width:54px;height:54px}.brand-name{font-size:34px}.brand-subtitle{font-size:12px}.book-cover{max-width:150px;width:45%;margin-bottom:14px}}

/* v4.4 size refinements */
.brand-icon{width:128px;height:128px}
.brand-subtitle{font-weight:900}
.scenario-page{max-width:1040px}
.diagram-card{padding:22px}
.scenario-image{width:100%;max-width:920px;height:auto}
.book-cover{width:360px;max-width:50%}
@media (max-width:800px){.brand-icon{width:76px;height:76px}.scenario-page{max-width:100%}.scenario-image{max-width:100%}.book-cover{width:190px;max-width:40%}}
@media (max-width:520px){.brand-icon{width:56px;height:56px}.book-cover{width:150px;max-width:45%}}

/* v5.0 Strategy Library layout refinements */
.library-intro{display:grid;grid-template-columns:260px 1fr;gap:28px;align-items:center}
.library-intro-visual{display:flex;align-items:center;justify-content:center}
.library-intro-image{display:block;width:100%;max-width:240px;height:auto;border-radius:12px;border:1px solid var(--line);box-shadow:var(--shadow);background:#fff}
.library-intro-copy h1{margin-top:0}
.section-description{margin:0 0 10px;color:var(--muted);font-size:15px}
.scenario-badges{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.scenario-badge{display:inline-flex;align-items:center;border:1px solid var(--line);background:var(--soft);color:var(--dark);border-radius:999px;padding:6px 10px;font-size:13px;font-weight:800;line-height:1.1}
.badge-level{border-color:#cbdcea;background:#eef6fc;color:#153a5b}
.badge-basic{background:#eef9f1;border-color:#c9ead2;color:#226838}
.badge-intermediate{background:#eef6fc;border-color:#c8def1;color:#1f5f96}
.badge-advanced{background:#f3effc;border-color:#dacdf4;color:#57359a}
.scenario-feature{display:grid;grid-template-columns:minmax(320px,520px) 1fr;gap:24px;align-items:start;margin-bottom:22px}
.scenario-feature .diagram-card{margin:0;padding:18px}
.scenario-feature .scenario-image{display:block;width:auto;max-width:100%;height:auto;object-fit:contain;margin:0 auto;border-radius:10px}
.scenario-summary-card{margin:0}
.scenario-cta-section{margin:0 0 20px}
.scenario-cta-section .cta-grid{margin:0 0 0}
.scenario-excerpt{margin-top:14px!important;color:var(--dark)!important;font-size:17px!important;border-left:4px solid var(--blue);padding-left:14px}
.product-card-with-image{display:flex;align-items:center;gap:22px}
.product-image{width:110px;max-width:110px;height:auto;flex-shrink:0}
.app-screen{border-radius:14px;box-shadow:0 8px 22px rgba(0,0,0,.14)}
.book-cover{width:110px!important;max-width:110px!important;height:auto}
@media (max-width:900px){.scenario-feature{grid-template-columns:1fr}.scenario-summary-card .cta-grid{grid-template-columns:1fr 1fr}.library-intro{grid-template-columns:220px 1fr}.library-intro-image{max-width:210px}}
@media (max-width:800px){.library-intro{grid-template-columns:1fr}.library-intro-visual{justify-content:flex-start}.library-intro-image{max-width:240px}.scenario-summary-card .cta-grid{grid-template-columns:1fr}}
@media (max-width:520px){.product-card-with-image{display:block}.product-image,.book-cover{width:120px!important;max-width:120px!important;margin-bottom:14px}.library-intro-image{max-width:100%}.scenario-badge{font-size:12px}}


/* v5.5 homepage/header refinements */
.header-inner{max-width:none!important;margin:0!important;justify-content:flex-start!important;text-align:left!important}
.brand{justify-content:flex-start!important;text-align:left!important}
.simple-library-intro{display:block!important;max-width:none}
.simple-library-intro h1{margin-top:0}
.simple-library-intro p{max-width:1050px;margin:0 0 16px}
.simple-library-intro .library-products{margin-top:24px;color:var(--muted);font-size:18px;line-height:1.55}
.library-intro-visual,.library-intro-image{display:none!important}

/* v5.7 final library polish */
.header-inner{padding-left:20px!important;padding-right:16px!important}
.library-products .resource-line{display:inline-block;margin:2px 0}
.scenario-summary-card p + p{margin-top:14px}
@media (max-width:800px){.header-inner{padding-left:14px!important;padding-right:14px!important}}

/* v5.8 featured scenario home cards */
.featured-label{margin:0 0 8px;color:var(--dark);font-size:13px;font-weight:800;text-transform:uppercase;letter-spacing:.05em}


.scenario-excerpt-label{font-size:.85rem;font-weight:600;color:#5b6b7a;margin-bottom:.35rem;}

/* v5.9 new Pickleball35 home preview page */
.site-home-hero{background:linear-gradient(180deg,#fff,var(--soft));border:1px solid var(--line);border-radius:18px;padding:38px 34px;box-shadow:var(--shadow);margin-bottom:28px}
.site-home-hero-copy{max-width:850px}
.site-home-hero h1{margin:0 0 14px;font-size:48px;line-height:1.08;color:var(--dark);letter-spacing:-.025em}
.site-home-hero p{font-size:19px;color:var(--muted);margin:0;max-width:780px}
.site-home-hero .eyebrow{margin:0 0 8px;color:var(--blue);font-size:14px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}
.home-choice-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin:28px 0 40px}
.home-choice-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:22px;display:flex;flex-direction:column;min-height:100%}
.home-choice-image-wrap{height:190px;display:flex;align-items:center;justify-content:center;margin-bottom:18px;background:var(--soft);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.home-choice-image{display:block;max-width:100%;max-height:170px;width:auto;height:auto}
.home-library-image{border-radius:10px;box-shadow:0 6px 18px rgba(0,0,0,.12)}
.home-app-image{border-radius:14px;box-shadow:0 8px 22px rgba(0,0,0,.14)}
.home-book-image{border-radius:6px;box-shadow:0 8px 22px rgba(0,0,0,.16)}
.home-choice-card h2{margin:0 0 8px;color:var(--dark);font-size:24px}
.home-choice-card p{margin:0 0 18px;color:var(--muted);font-size:16px;flex:1}
.home-choice-link{display:inline-block;color:var(--blue);font-weight:900;text-decoration:none;margin-top:auto}
.home-choice-link:hover{text-decoration:underline}
.muted-link{color:var(--muted);cursor:default}
.muted-link:hover{text-decoration:none}
@media (max-width:900px){.home-choice-grid{grid-template-columns:1fr}.home-choice-image-wrap{height:auto;min-height:160px;padding:18px}.home-choice-image{max-height:210px}.site-home-hero h1{font-size:40px}}
@media (max-width:520px){.site-home-hero{padding:26px 22px}.site-home-hero h1{font-size:34px}.site-home-hero p{font-size:17px}.home-choice-card{padding:18px}}

/* v5.10 book page */
.book-hero{display:grid;grid-template-columns:260px 1fr;gap:34px;align-items:center;background:linear-gradient(180deg,#fff,var(--soft));border:1px solid var(--line);border-radius:18px;padding:34px;box-shadow:var(--shadow);margin-bottom:28px}
.book-hero-image-wrap{display:flex;align-items:center;justify-content:center}
.book-hero-image{display:block;width:220px;max-width:100%;height:auto;border-radius:8px;box-shadow:0 12px 30px rgba(0,0,0,.18)}
.book-hero-copy h1{margin:0 0 12px;font-size:44px;line-height:1.08;color:var(--dark);letter-spacing:-.025em}
.book-hero-copy .eyebrow{margin:0 0 8px;color:var(--blue);font-weight:900;text-transform:uppercase;letter-spacing:.08em;font-size:14px}
.book-hero-lede{font-size:20px;color:var(--muted);margin:0 0 20px;max-width:760px}
.book-primary-cta{font-size:16px;padding:12px 18px}
.book-intro-card p{margin:0 0 14px!important;color:var(--muted);font-size:17px}
.book-intro-card p:last-child{margin-bottom:0!important}
.book-feature-grid,.book-related-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:0 0 20px}
.book-feature-card,.book-related-card{margin-bottom:0}
.book-check-list{margin:0;padding-left:20px;color:var(--muted);font-size:17px}
.book-check-list li{margin:8px 0}
.quote-card blockquote{margin:0;border-left:4px solid var(--blue);padding-left:16px;color:var(--dark);font-size:20px;line-height:1.45;font-style:italic}
.quote-attribution{margin:12px 0 0!important;color:var(--muted)!important;font-weight:800}
.book-final-cta{text-align:center}
.book-final-cta p{margin:0 0 16px!important}
@media (max-width:800px){.book-hero{grid-template-columns:1fr;text-align:left}.book-hero-image-wrap{justify-content:flex-start}.book-hero-image{width:180px}.book-hero-copy h1{font-size:34px}.book-feature-grid,.book-related-grid{grid-template-columns:1fr}}

/* v5.11 global navigation and footer */
.site-nav{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fff}
.site-nav-inner{display:flex;justify-content:center;align-items:center;gap:28px;padding:11px 16px;flex-wrap:wrap}
.site-nav a{color:var(--blue);font-size:15px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;text-decoration:none}
.site-nav a:hover{text-decoration:underline;text-underline-offset:4px}
.site-nav a.active{color:var(--dark);text-decoration:underline;text-underline-offset:5px;text-decoration-thickness:2px}
.footer-inner{text-align:center}
.footer-nav{display:flex;justify-content:center;align-items:center;gap:18px;flex-wrap:wrap;margin-bottom:10px}
.footer-nav a{color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;text-decoration:none}
.footer-nav a:hover{text-decoration:underline;text-underline-offset:4px}
.footer-inner p{margin:6px 0;color:var(--muted)}
.heading-note{font-size:.72em;color:var(--muted);font-weight:600;font-style:italic;white-space:nowrap}
@media (max-width:560px){.site-nav-inner{gap:16px}.site-nav a{font-size:13px}.footer-nav{gap:12px}.footer-nav a{font-size:12px}}

/* v5.12 app page */
.app-hero{display:grid;grid-template-columns:minmax(320px,520px) 1fr;gap:34px;align-items:center;background:linear-gradient(180deg,#fff,var(--soft));border:1px solid var(--line);border-radius:18px;padding:34px;box-shadow:var(--shadow);margin-bottom:28px}
.app-hero-media{display:flex;align-items:center;justify-content:center}
.app-hero-image{display:block;width:100%;max-width:500px;height:auto;border-radius:18px;box-shadow:0 12px 30px rgba(0,0,0,.16);border:1px solid var(--line)}
.app-hero-copy h1{margin:0 0 12px;font-size:44px;line-height:1.08;color:var(--dark);letter-spacing:-.025em}
.app-hero-copy .eyebrow{margin:0 0 8px;color:var(--blue);font-weight:900;text-transform:uppercase;letter-spacing:.08em;font-size:14px}
.app-hero-lede{font-size:20px;color:var(--muted);margin:0 0 14px;max-width:760px}
.app-pricing-line{font-size:17px;color:var(--dark);margin:0 0 18px;line-height:1.45}
.app-hero-badges,.app-final-badges{margin-top:4px}
.app-intro-card p,.app-feature-card p,.app-progress-card p,.app-author-card p,.app-final-cta p{margin:0 0 14px!important;color:var(--muted);font-size:17px}
.app-intro-card p:last-child,.app-feature-card p:last-child,.app-progress-card p:last-child,.app-author-card p:last-child{margin-bottom:0!important}
.app-feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:0 0 20px}
.app-feature-card{margin-bottom:0}
.status-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:18px}
.status-pill{border:1px solid var(--line);border-radius:14px;background:var(--soft);padding:16px}
.status-pill strong{display:block;color:var(--dark);margin-bottom:6px}
.status-pill span{display:block;color:var(--muted);font-size:14px}
.app-final-cta{text-align:center}
.app-final-cta .store-badges{justify-content:center}
@media (max-width:900px){.app-hero{grid-template-columns:1fr}.app-hero-media{justify-content:flex-start}.app-hero-image{max-width:520px}.app-feature-grid,.status-grid{grid-template-columns:1fr}.app-hero-copy h1{font-size:34px}}
@media (max-width:520px){.app-hero{padding:24px}.app-hero-image{border-radius:14px}.app-hero-lede{font-size:18px}.app-pricing-line{font-size:16px}}

/* Privacy page section spacing */
.privacy-card h2{margin-top:30px}.privacy-card h2:first-of-type{margin-top:0}


/* v5.15 SEO content sections */
.home-mission-card p,.home-info-card p,.home-system-card p{margin:0 0 14px!important;color:var(--muted);font-size:17px}
.home-mission-card p:last-child,.home-info-card p:last-child,.home-system-card p:last-child{margin-bottom:0!important}
.home-info-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:0 0 20px}
.home-info-card{margin-bottom:0}
.home-system-card{margin-top:0}
@media (max-width:800px){.home-info-grid{grid-template-columns:1fr}}