/* Modern tech / fitness — tailored responsive design */

:root{--bg:#f6f8fb;--surface:#e8edfb;--sand:#dfe5f6;--ink:#0c1734;--ink-2:#31405f;--muted:#62708e;--line:#d8e0ee;--accent:#315cf5;--accent-deep:#143cbd;--accent-soft:#e9efff;--paper:#f8faff;--font:Arial,sans-serif;--display:Arial,sans-serif}
.site-header{background:rgba(255,255,255,.97)}.site-header .brand-name{letter-spacing:-.065em;font-weight:900}.hero{background:#0c1734;color:#fff}.hero-grid{grid-template-columns:1fr 1fr;gap:0;padding-top:0;padding-bottom:0;max-width:none;padding-left:max(var(--gutter),calc((100vw - 1240px)/2));padding-right:0}.hero-copy{padding:76px 50px 76px 0}.hero h1{font-weight:850;font-size:clamp(48px,6.4vw,92px);line-height:1.03}.hero .lead,.hero-copy>p:not(.lead):not(.eyebrow):not(.fine){color:#dbe4f9}.hero .fine{color:#bcc9e0}.hero-photo{min-height:650px}.hero-photo figcaption{background:#315cf5}.hero .btn-ghost{color:#fff;box-shadow:inset 0 0 0 1px #fff}.hero .btn-ghost:hover{background:#fff;color:#0c1734}.btn{border-radius:10px}.index-strip{background:#eef2fa}.index-row strong{font-family:Arial;font-weight:800}.chapter-label{border-top:4px solid var(--accent);padding-top:22px}.chapter-label h2{font-weight:800}.feature-card{border:1px solid #d9e2f7;border-radius:16px;overflow:hidden;box-shadow:0 9px 20px #1d315a12}.site-footer{background:#0a1230}
@media(max-width:900px){.hero-grid{padding:0 var(--gutter);grid-template-columns:1fr}.hero-copy{padding:50px 0}.hero-photo{min-height:440px}}

@media(max-width:640px){.hero-photo{min-height:340px}.hero h1{font-size:clamp(39px,10vw,60px)}.chapter-grid{display:block}.chapter-label{position:static}}