/* ============================================================
   TTK Members — design system (TikTok energy × Apple restraint)
   Shared by: white/playbook, upsell1-3, thank-you
   ============================================================ */
:root{
  --bg:#000000; --panel:#0d0d11; --panel-2:#141419; --elev:#1a1a20;
  --line:rgba(255,255,255,.09); --line-2:rgba(255,255,255,.16);
  --ink:#f5f5f7; --ink-2:#a7a7ae; --ink-3:#6f6f78;
  --aqua:#25F4EE; --pink:#FE2C55; --pink-hi:#ff4d6f;
  --r-lg:28px; --r-md:22px; --r-sm:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:'Inter',-apple-system,BlinkMacSystemFont,'SF Pro Text',system-ui,sans-serif;font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:rgba(37,244,238,.25)}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2.5px solid var(--aqua);outline-offset:3px;border-radius:8px}

.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
.tight{max-width:760px;margin:0 auto}

/* type */
.display{font-weight:800;letter-spacing:-.035em;line-height:1.03}
h1.display{font-size:clamp(40px,7.2vw,76px)}
h2.display{font-size:clamp(30px,4.6vw,48px)}
.kicker{font-size:12.5px;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-3)}
.kicker .k-dot{color:var(--aqua)}
.lead{color:var(--ink-2);font-size:clamp(17px,2.1vw,20px);line-height:1.65}
.grad-text{background:linear-gradient(92deg,var(--aqua) 8%,#9ff2ff 38%,var(--pink-hi) 92%);-webkit-background-clip:text;background-clip:text;color:transparent}
/* the TikTok chromatic offset — use on ONE word only */
.tk{position:relative;color:#fff;text-shadow:2.5px 2.5px 0 rgba(254,44,85,.55),-2.5px -2.5px 0 rgba(37,244,238,.5)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;background:var(--pink);color:#fff;font-weight:700;font-size:17px;letter-spacing:-.01em;padding:17px 34px;border-radius:999px;border:0;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease;box-shadow:0 10px 34px rgba(254,44,85,.32)}
.btn:hover{background:var(--pink-hi);transform:translateY(-1px);box-shadow:0 14px 40px rgba(254,44,85,.42)}
.btn:active{transform:translateY(0) scale(.985)}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:10px;background:rgba(255,255,255,.06);color:var(--ink);border:1px solid var(--line-2);font-weight:600;font-size:17px;padding:17px 34px;border-radius:999px;cursor:pointer;transition:background .18s ease,border-color .18s ease;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.24)}
.btn-xl{font-size:19px;padding:21px 44px;width:100%;max-width:560px}
@keyframes breathe{0%,100%{box-shadow:0 10px 34px rgba(254,44,85,.30)}50%{box-shadow:0 12px 44px rgba(254,44,85,.55),0 0 0 8px rgba(254,44,85,.06)}}
.btn-pulse{animation:breathe 2.6s ease-in-out infinite}

/* chips & cards */
.chip{display:inline-flex;align-items:center;gap:9px;background:rgba(255,255,255,.055);border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-size:13px;font-weight:600;color:var(--ink-2);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.chip .dot{width:7px;height:7px;border-radius:50%;background:var(--aqua);box-shadow:0 0 10px var(--aqua)}
.card{background:rgba(255,255,255,.038);border:1px solid var(--line);border-radius:var(--r-md);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.card-solid{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md)}

/* imagery */
.shot{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-2);box-shadow:0 30px 90px rgba(0,0,0,.6),0 0 80px rgba(37,244,238,.07),0 0 120px rgba(254,44,85,.06)}
.shot img{width:100%;height:auto}

/* header */
.hd{position:sticky;top:0;z-index:60;background:rgba(0,0,0,.72);backdrop-filter:blur(18px) saturate(1.6);-webkit-backdrop-filter:blur(18px) saturate(1.6);border-bottom:1px solid var(--line)}
.hd .in{max-width:1120px;margin:0 auto;padding:0 24px;height:60px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em;font-size:16.5px}
.brand .mark{width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--aqua),var(--pink));display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:900;color:#000}
.hd nav{display:flex;gap:28px;font-size:14px;color:var(--ink-2)}
.hd nav a{transition:color .15s}.hd nav a:hover{color:var(--ink)}
.hd .cta{background:var(--pink);color:#fff;font-weight:700;font-size:13.5px;padding:9px 18px;border-radius:999px;transition:background .15s}
.hd .cta:hover{background:var(--pink-hi)}

/* sections */
section{padding:96px 0}
.sec-head{text-align:center;max-width:720px;margin:0 auto 56px}
.sec-head .kicker{margin-bottom:14px}
.sec-head p{margin-top:16px}

/* footer */
footer{border-top:1px solid var(--line);padding:56px 0 64px;background:linear-gradient(180deg,rgba(255,255,255,.02),transparent)}
footer .cols{display:flex;flex-wrap:wrap;gap:28px;justify-content:space-between;align-items:flex-start}
footer .links{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:13.5px;color:var(--ink-2)}
footer .links a:hover{color:var(--ink)}
footer .fine{font-size:12.5px;color:var(--ink-3);line-height:1.7;max-width:680px;margin-top:26px}

/* reveal on scroll (JS adds .on) */
.rev{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.rev.on{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .rev{opacity:1;transform:none;transition:none}
  .btn,.btn-pulse{animation:none;transition:none}
  html{scroll-behavior:auto}
}

@media (max-width:740px){
  section{padding:64px 0}
  .hd nav{display:none}
  .btn,.btn-ghost{width:100%}
}