/* Reset, the lit backdrop, glass, type, buttons, header and footer. */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); -webkit-text-size-adjust: 100%; scrollbar-color: var(--edge-strong) var(--bg-deep); background: var(--bg); }
body { margin: 0; color: var(--text); font-family: var(--font-text); font-size: 17px; line-height: 1.6; font-weight: 400; letter-spacing: -0.006em; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; overflow-x: hidden; }
body.menu-open { overflow: hidden; }
::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--edge-strong); border-radius: var(--r-pill); border: 3px solid var(--bg-deep); }
::selection { background: var(--accent); color: var(--accent-ink); }
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; letter-spacing: inherit; }
h1, h2, h3, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: var(--r-sm); }

/* The backdrop: slow light behind everything, which the glass panels blur and tint. */
.backdrop { position: fixed; inset: 0; z-index: -1; overflow: hidden; background: radial-gradient(120% 90% at 50% 0%, var(--bg) 40%, var(--bg-deep)); }
.backdrop i { position: absolute; border-radius: 50%; filter: blur(90px); will-change: transform; }
.backdrop i:nth-child(1) { width: 62vmax; height: 62vmax; left: -18vmax; top: -24vmax; background: radial-gradient(closest-side, var(--aura-blue), transparent); animation: drift-a 38s ease-in-out infinite alternate; }
.backdrop i:nth-child(2) { width: 56vmax; height: 56vmax; right: -20vmax; top: -6vmax; background: radial-gradient(closest-side, var(--aura-violet), transparent); animation: drift-b 46s ease-in-out infinite alternate; }
.backdrop i:nth-child(3) { width: 58vmax; height: 58vmax; left: 14vmax; bottom: -34vmax; background: radial-gradient(closest-side, var(--aura-teal), transparent); animation: drift-c 52s ease-in-out infinite alternate; }
.backdrop i:nth-child(4) { width: 34vmax; height: 34vmax; right: 6vmax; bottom: -10vmax; background: radial-gradient(closest-side, var(--aura-rose), transparent); animation: drift-a 60s ease-in-out infinite alternate-reverse; }
.backdrop::after { content: ''; position: absolute; inset: 0; opacity: 0.5; mix-blend-mode: overlay; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 .35 0'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E"); }
@keyframes drift-a { to { transform: translate3d(9vmax, 7vmax, 0) scale(1.12); } }
@keyframes drift-b { to { transform: translate3d(-10vmax, 9vmax, 0) scale(0.92); } }
@keyframes drift-c { to { transform: translate3d(8vmax, -8vmax, 0) scale(1.1); } }

/* Glass. One recipe: a tinted, blurred pane with a bright top edge and a hairline border. */
.glass, .card { position: relative; background: linear-gradient(180deg, var(--glass-top), var(--glass-bottom)); -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur); border-radius: var(--r-lg); box-shadow: var(--shadow-float); isolation: isolate; }
.glass::before, .card::before { content: ''; position: absolute; inset: 0; border-radius: inherit; padding: 1px; background: var(--grad-edge); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0); pointer-events: none; z-index: 2; }
.card { overflow: hidden; }

.wrap { width: 100%; max-width: calc(var(--wrap) + var(--gutter) * 2); margin: 0 auto; padding: 0 var(--gutter); }
.icon { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.skip { position: absolute; left: 16px; top: -60px; z-index: 100; background: var(--white); color: var(--ink); padding: 10px 16px; border-radius: var(--r-sm); font-weight: 600; }
.skip:focus { top: 12px; }

/* Type: one family, weight and tracking carry the hierarchy. */
.display { font-weight: 600; letter-spacing: -0.045em; line-height: 1; text-wrap: balance; }
.h2 { font-weight: 600; font-size: clamp(34px, 4.5vw, 60px); line-height: 1.04; letter-spacing: -0.04em; text-wrap: balance; }
.h3 { font-weight: 600; font-size: clamp(20px, 1.7vw, 23px); line-height: 1.2; letter-spacing: -0.022em; }
.lead { font-size: clamp(17px, 1.45vw, 20px); line-height: 1.6; color: var(--dim); max-width: 58ch; text-wrap: pretty; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; height: 32px; padding: 0 14px 0 12px; border-radius: var(--r-pill); background: var(--glass); border: 1px solid var(--edge); -webkit-backdrop-filter: var(--blur-light); backdrop-filter: var(--blur-light); font-size: 13px; font-weight: 500; letter-spacing: 0; color: var(--text); }
.eyebrow::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent-glow); }
.eyebrow.is-trainer::before { background: var(--trainer); box-shadow: 0 0 12px var(--trainer-glow); }
.eyebrow.is-gold::before { background: var(--gold); box-shadow: 0 0 12px var(--gold-soft); }
.hl, .tl, .gl { background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent; -webkit-text-fill-color: transparent; }
.tl { background-image: var(--grad-trainer); }
.gl { background-image: var(--grad-gold); }
.num { font-family: var(--font-num); font-variant-numeric: tabular-nums; letter-spacing: -0.05em; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 46px; padding: 0 22px; border-radius: var(--r-pill); font-size: 15px; font-weight: 500; white-space: nowrap; transition: transform var(--fast) var(--curve), background var(--fast), border-color var(--fast), box-shadow var(--fast); }
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--white); color: var(--ink); font-weight: 600; box-shadow: 0 1px 0 var(--white) inset, var(--shadow-btn-rest); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: var(--shadow-btn); }
.btn-ghost { background: var(--glass); border: 1px solid var(--edge); -webkit-backdrop-filter: var(--blur-light); backdrop-filter: var(--blur-light); }
.btn-ghost:hover { background: var(--glass-strong); border-color: var(--edge-strong); }
.btn-big { min-height: 56px; padding: 0 30px; font-size: 16.5px; }
.btn .icon { width: 18px; height: 18px; transition: transform var(--fast) var(--curve); }
.btn:hover .icon { transform: translateX(3px); }

/* Header: a floating glass bar. */
.site-header { position: fixed; inset: 14px 0 auto 0; z-index: 50; pointer-events: none; }
.site-header .wrap { pointer-events: auto; }
.header-bar { height: 58px; padding: 0 8px 0 20px; display: flex; align-items: center; gap: 20px; border-radius: var(--r-pill); background: var(--glass); border: 1px solid var(--edge-soft); -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur); transition: background var(--fast), border-color var(--fast), box-shadow var(--fast); }
.site-header.is-scrolled .header-bar { background: var(--glass-deep); border-color: var(--edge); box-shadow: var(--shadow-bar); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; font-size: 17px; letter-spacing: -0.025em; white-space: nowrap; }
.brand-mark { width: 30px; height: 30px; }
.brand-mark .ring { fill: none; stroke: url(#brand-grad); stroke-width: 6; }
.brand-mark .bone { fill: none; stroke: url(#brand-grad); stroke-width: 5.5; stroke-linecap: round; }
.brand-mark .dot { fill: var(--accent); }
.brand-mark .bg-a { stop-color: var(--white); }
.brand-mark .bg-b { stop-color: var(--iris); }
.brand-mark .bg-c { stop-color: var(--accent); }
.wordmark b { font-weight: inherit; background: var(--grad-mark); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav { display: flex; gap: 2px; margin: 0 auto; }
.nav a { padding: 8px 13px; border-radius: var(--r-pill); font-size: 14px; font-weight: 450; color: var(--dim); transition: color var(--fast), background var(--fast); }
.nav a:hover { color: var(--text); background: var(--glass-strong); }
.header-actions { display: flex; align-items: center; gap: 6px; }
.header-actions .btn { min-height: 42px; padding: 0 18px; font-size: 14px; }
.link-signin { padding: 8px 14px; font-size: 14px; font-weight: 500; border-radius: var(--r-pill); color: var(--dim); transition: color var(--fast); }
.link-signin:hover { color: var(--text); }
#menu-button { display: none; width: 42px; height: 42px; align-items: center; justify-content: center; border-radius: 50%; border: 1px solid var(--edge); }

@media (max-width: 1040px) {
  #menu-button { display: inline-flex; }
  .nav { position: fixed; inset: 84px var(--gutter) auto var(--gutter); margin: 0; padding: 10px; flex-direction: column; gap: 0; border-radius: var(--r-lg); background: var(--menu-panel); border: 1px solid var(--edge); -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur); box-shadow: var(--shadow-deep); opacity: 0; visibility: hidden; transform: translateY(-8px); transition: opacity var(--fast), transform var(--fast) var(--curve), visibility var(--fast); max-height: calc(100vh - 110px); overflow-y: auto; }
  .nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav a { padding: 14px 16px; font-size: 17px; font-weight: 500; color: var(--text); border-radius: var(--r-md); }
  .header-actions { margin-left: auto; }
  .link-signin { display: none; }
  .nav .nav-signin { color: var(--accent); }
}
@media (min-width: 1041px) { .nav .nav-signin { display: none; } }
@media (max-width: 420px) { .brand span { font-size: 15px; } .header-bar { padding-left: 14px; gap: 10px; } .header-actions .btn { padding: 0 14px; } }

/* Sections */
.section { padding: var(--section) 0; position: relative; }
.section-head { display: grid; gap: 22px; justify-items: start; margin-bottom: clamp(40px, 5vw, 68px); max-width: 780px; }
.section-head.is-center { margin-left: auto; margin-right: auto; text-align: center; justify-items: center; }

.reveal { opacity: 0; transform: translateY(28px); filter: blur(6px); transition: opacity var(--slow) var(--curve), transform var(--slow) var(--curve), filter var(--slow) var(--curve); transition-delay: var(--d, 0ms); }
.reveal.is-in { opacity: 1; transform: none; filter: none; }

/* The trainer's mark: a glass ring with five bars that move while it speaks. */
.mark { --size: 44px; width: var(--size); height: var(--size); flex: none; border-radius: 50%; background: var(--trainer-soft); border: 1px solid var(--trainer-line); display: inline-flex; align-items: center; justify-content: center; gap: 2.5px; box-shadow: 0 0 26px var(--trainer-glow), 0 1px 0 var(--shine) inset; }
.mark i { width: 2.5px; height: 30%; background: var(--trainer); border-radius: 2px; animation: speak 900ms ease-in-out infinite; }
.mark i:nth-child(2) { animation-delay: -150ms; }
.mark i:nth-child(3) { animation-delay: -450ms; }
.mark i:nth-child(4) { animation-delay: -250ms; }
.mark i:nth-child(5) { animation-delay: -600ms; }
@keyframes speak { 0%, 100% { height: 14%; } 50% { height: 46%; } }

/* Footer */
.site-footer { position: relative; border-top: 1px solid var(--edge-soft); padding: 56px 0 40px; color: var(--dim); font-size: 14px; background: var(--glass-deep); -webkit-backdrop-filter: var(--blur); backdrop-filter: var(--blur); }
.footer-grid { display: flex; flex-wrap: wrap; gap: 32px 64px; align-items: flex-start; justify-content: space-between; }
.footer-grid p { max-width: 36ch; margin-top: 14px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 28px; }
.footer-links a { padding: 6px 0; transition: color var(--fast); }
.footer-links a:hover { color: var(--text); }
.footer-base { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--edge-soft); display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; color: var(--faint); font-size: 13px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; filter: none; transition: none; }
  .mark i, .backdrop i { animation: none; }
  .mark i { height: 30%; }
}
/* The small footer under the join, membership, contact and legal pages. */
.page-footer { padding: 32px 0 28px; }
.page-footer .footer-base { margin-top: 22px; padding-top: 18px; }