/* YT Channel Sites, Option A (Masum 2026-11-03). One stylesheet for all 10 sites; each page sets --accent and --tint. */
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:#fff;color:#111827;font-family:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;font-size:18px;line-height:1.6}
a{color:#111827;text-decoration:none}
a:hover{color:#374151}
img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
.narrow{max-width:820px;margin:0 auto;padding:0 24px}

/* header */
.top{border-bottom:1px solid #E5E7EB}
.top .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding-top:18px;padding-bottom:18px}
.brand{display:flex;align-items:center;gap:12px}
.mark{width:44px;height:44px;border-radius:12px;background:var(--accent);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:800;font-size:17px;flex:none;overflow:hidden}
.mark img{width:100%;height:100%;object-fit:cover}
.brand-name{font-weight:800;font-size:24px;letter-spacing:-.3px}
.nav{display:flex;flex-wrap:wrap;align-items:center;gap:28px;font-size:18px;font-weight:600}
.pill{background:var(--accent);color:#fff;padding:12px 20px;border-radius:999px;display:inline-flex;align-items:center;gap:8px;font-weight:700}
.pill:hover{color:#fff;filter:brightness(.92)}

/* buttons */
.btns{display:flex;flex-wrap:wrap;gap:14px}
.btn{background:var(--accent);color:#fff;font-weight:700;font-size:18px;padding:16px 26px;border-radius:14px;display:inline-block}
.btn:hover{color:#fff;filter:brightness(.92)}
.btn-ghost{border:2px solid #D1D5DB;color:#111827;font-weight:700;font-size:18px;padding:14px 24px;border-radius:14px;display:inline-block}
.btn-ghost:hover{border-color:#9CA3AF}

/* hero */
.hero .wrap{display:flex;flex-wrap:wrap;gap:48px;align-items:center;padding-top:56px;padding-bottom:48px}
.hero-text{flex:1 1 420px;min-width:0}
.hero-media{flex:1 1 520px;min-width:0}
.kicker{display:inline-block;background:var(--tint);color:var(--accent);font-weight:700;font-size:16px;padding:8px 14px;border-radius:999px;margin-bottom:20px}
.hero h1{font-size:52px;line-height:1.08;letter-spacing:-1.2px;margin:0 0 20px;font-weight:800}
.lead{font-size:21px;line-height:1.55;color:#4B5563;margin:0 0 32px}
.frame{aspect-ratio:16/9;border-radius:20px;background:var(--tint2);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;overflow:hidden;position:relative}
.frame img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.play{width:84px;height:84px;border-radius:999px;background:var(--accent);display:inline-flex;align-items:center;justify-content:center;position:relative}
.frame-note{font-size:17px;font-weight:600;color:#374151}

/* sections */
.sec{padding-top:24px;padding-bottom:56px}
.sec-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:24px}
h2{font-size:34px;letter-spacing:-.6px;margin:0;font-weight:800;line-height:1.2}
.more{font-size:18px;font-weight:700;color:var(--accent)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:28px}
.card{display:flex;flex-direction:column;gap:12px}
.thumb{aspect-ratio:16/9;border-radius:16px;background:var(--tint);position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden}
.thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.thumb .dot{width:54px;height:54px;border-radius:999px;background:#fff;display:inline-flex;align-items:center;justify-content:center;position:relative}
.len{position:absolute;right:12px;bottom:12px;background:#111827;color:#fff;font-size:14px;font-weight:700;padding:4px 8px;border-radius:8px}
.topic{font-size:15px;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.6px}
.card-title{font-size:22px;line-height:1.3;font-weight:800}
.card-line{font-size:17px;line-height:1.5;color:#4B5563}
.band{background:#F9FAFB;border-top:1px solid #E5E7EB;border-bottom:1px solid #E5E7EB}
.band .wrap{padding-top:48px;padding-bottom:48px}
.chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px}
.chip{background:#fff;border:2px solid #E5E7EB;font-size:18px;font-weight:700;padding:12px 20px;border-radius:999px}
.chip:hover{border-color:var(--accent)}
.about .wrap{display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between;padding-top:56px;padding-bottom:56px}
.about-text{flex:1 1 520px;min-width:0}
.about h2{font-size:30px;margin-bottom:12px}
.about p{font-size:19px;line-height:1.6;color:#4B5563;margin:0}

/* post */
.post{padding-top:40px;padding-bottom:24px}
.crumbs{font-size:17px;font-weight:600;color:#4B5563;margin-bottom:18px}
.crumbs a{color:#4B5563}
.crumbs .here{color:var(--accent)}
.post h1{font-size:48px;line-height:1.1;letter-spacing:-1px;margin:0 0 18px;font-weight:800}
.meta{display:flex;flex-wrap:wrap;gap:6px 0;font-size:17px;color:#4B5563;font-weight:600;margin-bottom:28px}
.meta span+span::before{content:"·";margin:0 12px;color:#9CA3AF}
.video{aspect-ratio:16/9;border-radius:20px;overflow:hidden;background:#111827;margin-bottom:14px}
.video iframe{width:100%;height:100%;border:0;display:block}
.video.ph{display:flex;align-items:center;justify-content:center}
.links{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:36px;font-size:17px;font-weight:700}
.links a{color:var(--accent)}
.links .sep{color:#9CA3AF}
.points{background:var(--tint);border-radius:18px;padding:28px 30px;margin-bottom:40px}
.points h2{font-size:24px;margin-bottom:16px}
.points ol{margin:0;padding:0;list-style:none;counter-reset:p;display:flex;flex-direction:column;gap:12px;font-size:19px;line-height:1.5}
.points li{display:flex;gap:12px;counter-increment:p}
.points li::before{content:counter(p);color:var(--accent);font-weight:800}
.chapters{display:flex;flex-direction:column;gap:2px;margin:14px 0 40px;font-size:18px}
.chapters a{display:flex;gap:18px;padding:12px 0;border-bottom:1px solid #E5E7EB}
.chapters .t{color:var(--accent);font-weight:800;min-width:56px}
.body h2{font-size:30px;letter-spacing:-.4px;margin:40px 0 14px}
.body h3{font-size:23px;margin:28px 0 10px}
.body p,.body li{font-size:20px;line-height:1.7;color:#1F2937}
.body p{margin:0 0 20px}
.body a{color:var(--accent);text-decoration:underline}
.products{border:2px solid #E5E7EB;border-radius:18px;padding:24px 26px;margin:36px 0 14px}
.products h2{font-size:24px;margin-bottom:16px}
.prod{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding:14px 0;border-top:1px solid #E5E7EB}
.prod:first-of-type{border-top:0}
.prod-name{display:flex;align-items:center;gap:14px;font-size:19px;font-weight:700}
.prod-name img{width:64px;height:64px;border-radius:12px;object-fit:contain;background:#F3F4F6}
.prod .btn{font-size:17px;padding:12px 18px;border-radius:12px}
.disclose{font-size:15px;line-height:1.5;color:#4B5563;margin:0 0 44px}
.chanbox{background:#F9FAFB;border:1px solid #E5E7EB;border-radius:18px;padding:26px;display:flex;flex-wrap:wrap;gap:18px;align-items:center;justify-content:space-between;margin-top:40px}
.chanbox .who{display:flex;align-items:center;gap:14px}
.chanbox .mark{width:52px;height:52px;border-radius:14px;font-size:19px}
.chanbox b{display:block;font-size:20px}
.chanbox span.sub{font-size:17px;color:#4B5563}

/* plain pages */
.page{padding-top:48px;padding-bottom:64px}
.page h1{font-size:46px;line-height:1.1;letter-spacing:-1px;margin:0 0 24px;font-weight:800}
.page p,.page li{font-size:20px;line-height:1.7;color:#1F2937}
.page h2{font-size:26px;margin:32px 0 10px}
.page a{color:var(--accent);text-decoration:underline}

/* footer */
.foot{border-top:1px solid #E5E7EB}
.foot .wrap{display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between;padding-top:28px;padding-bottom:28px;font-size:16px;color:#4B5563}
.foot nav{display:flex;flex-wrap:wrap;gap:22px}
.foot a{color:#4B5563}

@media (max-width:640px){
  body{font-size:17px}
  .wrap,.narrow{padding-left:16px;padding-right:16px}
  .page{padding-top:32px;padding-bottom:48px}
  .post{padding-top:24px}
  .top .wrap{flex-wrap:nowrap;padding-top:14px;padding-bottom:14px}
  .nav a:not(.pill){display:none}
  .pill{padding:10px 16px;font-size:16px}
  .brand-name{font-size:21px}
  .mark{width:40px;height:40px;font-size:15px}
  .meta{font-size:15px}
  .meta span+span::before{margin:0 8px}
  .hero .wrap{padding-top:32px;padding-bottom:32px;gap:28px}
  .about .wrap{padding-top:40px;padding-bottom:40px}
  .sec{padding-bottom:40px}
  .hero h1{font-size:36px;letter-spacing:-.6px}
  .lead{font-size:19px}
  h2{font-size:28px}
  .post h1,.page h1{font-size:32px;letter-spacing:-.5px}
  .video{border-radius:0;margin-left:-16px;margin-right:-16px}
  .points{padding:20px}
  .body p,.body li,.page p,.page li{font-size:18px}
}